Regulator for air tank

Prevailing air regulator

p01The present invention relates to an air regulator prevails, to a prevailing air regulator which can provide more detail of the air reservoir is always under reduced pressure at a constant pressure.

p02In general, a worker working on the thin air place such as fire or toxic gas field is rucksack (5: Bcakpack) of deungheori As shown in Figure 1 is supplied with air from an air passage (not shown) mounted on. The operator recognizes the amount of air (remaining amount warning) that can be used for several minutes to several ten minutes by the detectors in rucksack (5) to be activated by an air passage when the air pressure of the air in the air passage to be used up. Therefore, the operator can quickly evacuate to a safe place (place-enriched air) of the air passage before it is possible to recognize the warning of the remaining amount of air exhausted air.

p03So, a warning alarm to warn the reservoir level is a registered patent No. registered in the Republic of Korea Intellectual Property Office by the applicant of the present invention 951 394 (air prevailing security alarm system) can be those examples. These detectors operate receives supply the compressed air from the regulator 2 is connected to the air passage of the rucksack (5) as shown in Fig. Regulator 2 is composed of a valve block (6) and separately described later as shown is provided on the backpack (5). And, the regulator (2), a first tube (2a) and second tube (2b) as shown, while providing a reduced pressure to the wearer by the compressed air in the air passage to the alarm operation.

p04At this time, at the same time the regulator (2) is directly supplied to the air of the compressed to a pressure of about 300 kgf / ㎠ charge air passage to the valve block 6 and the first tube (2a) is connected, the air of high pressure discharged from the air passage under reduced pressure to a pressure of about 8 kgf / ㎠ and supplies it to the valve block (6) and connected to the second tube (2b). That is, the regulator (2) is the primary air of the high pressure (a pressure of about 300 kgf / ㎠) a first tube (2a) to the supply, and the secondary air (pressure of about 8 kgf / ㎠) of the low pressure of the second tube and supplies it to (2b).

p05Here, the above-mentioned first tube (2a) is a pressure of about 300 kgf / ㎠ connected to the valve block (6), as shown via a valve block (6) of the gauge tube (4a) and a whistle cylinder (9a) and it supplies the primary air of the high pressure having a fuel gauge (4) and a whistle (9). Thus, the first tube (2a) is a warning display for the remaining amount of air passage through the fuel gauge (4), and through the whistle 9 hayeoteum the air in the air passage at the warning sound to the residual amount. At this time, the fuel gauge 4 is exhausted as the air in the air passage to the scale manifestation that the air pressure in the air passage is gradually drop from about 300 kgf / ㎠ to display the residual amount. And Whistle (9) should have when the two reservoir of air pressure while exhausting the air in the reservoir drops from about 300 kgf / ㎠ to about 55kgf / ㎠ to emit a beep approximately 90dB reservoir air warning that it has reached the warning level . That is, the whistle (9) is operated by air pressure of about 55kgf / ㎠. Therefore, the operator of the task is performed may be whether the remaining amount warning by the warning whistle (9) it is possible to ensure the time to evacuate to a safe area.

p06On the other hand, the aforementioned second tube (2b) through the respiratory tube (3a) connected to the valve block (6) of the rucksack (5), as is under reduced pressure by the regulator (2) showing the secondary air of low pressure is supplied is supplied to the respiratory tract (3). At this time, the ventilator (3) is slightly higher than the pressure of about 20mmH (atmospheric pressure breathing is a secondary air having a pressure of about 8 kgf / ㎠ possible to be supplied to the respiratory tube (3a)₂It converted to the pressure of the O) to be supplied to the operator. Therefore, the operator can be breathe fresh air by a respirator (3) is protected from the harmful gas in the work site.

p07On the other hand, to the valve block (6) is a second tube (2b) 2 difference when air is supplied, close the second tube (2b), while the built therein as shown spool (SL) is moved to one side of the providing a switching module switches the first diaphragm (not shown) of the 13 attachment part of the secondary air to one side. At this time, the first diaphragm switch as convexly deformed by the pressure of the secondary air switches the switch module (13). Therefore, the switch module 13, such as by lighting (5a) to display a flashing position attached to the backpack (5) to display the current position of the operator. That is, the conventional air prevailing alarms position indicator informs the current position of the operator through (5a) to another operator.

p08The switch module 13 causes the position indicator lights (5a) until the exhausted air is almost completely since the air to escape from the air passage. Thus, the position indicator (5a) displays the current position of the operator as the lighting until the exhausted air in the air passage almost completely.

p09On the other hand, a switch module 13 described above is thereby light the warning lamp (L) installed in the lamp unit (4b) of the fuel gauge (4), as shown enlarged through the unillustrated second diaphragm switch. The switch module 13 is a valve block (6) to weaken the primary air pressure in the high pressure (about 300 kgf / ㎠ pressure), flowing into the spool (SL), the second diaphragm to the secondary air by moving the other side of the other side It is supplied to a switch (not shown). At this time, the second diaphragm is deformed convexly by the switch while the second air pressure in the air (about 8 kgf / ㎠ pressure) switching operation lights the warning lamp (L). Thus, the wearer can recognize that the air passage of the warning light by the (L) and a flashing alarm whistle 9 exhausting air. In other words, the wearer can recognize that the air exhausted in the air passage in a variety of forms.

p10Meanwhile, the regulator 2 has a valve body (2c) and then introduced into the inlet (2c ') of the primary air valve body (2c) of the non-reduced pressure of the air passage (1) as shown in Fig. 2 (a) hollow (2f) of the plunger (2d) is supplied to the built-in. The plunger (2d) is lowered by the primary pressure of the air filled in the upper portion through the hollow (2f), as shown in FIG. 2 (b). At this time, the plunger (2d) is the inlet, as the air pressure of the primary air filled in the upper portion when forming a pressure of about 8 kgf / ㎠ while compressing the elastic member (2e) lowered by shown in the diagram (c) of Fig. 2 ( the shield 2c '). That is, the plunger (2d) are the primary air is filled in the upper portion fall in accordance with the about 8 kgf / ㎠ pressure is formed. Of course, the regulator (2) is supplied to the valve body (2c) about 8 kgf / ㎠ of the respirator (3) the air pressure is over about 8 kgf / ㎠ outlet (2C "), the reduced pressure air to pressure so filled in. Thus, the regulator 2 is provided to the respirator (3) under reduced pressure to the primary air.

p11Here, the above-described plunger (2d) to knock down as the primary air that flows into the inlet (2c ') during descent. That is, the plunger (2d) to knock down as the reaction force of the primary air that flows into the inlet (2c '). And, the plunger (2d) while being via outlet (2c ") of the charge air is discharged in the upper part the upper side the pressure is reduced to return to the original position as the elastic member (2e) is again circular restored, that is, the plunger (2d) is when the pressure of the upper is reduced again returns by the elastic force of the elastic member (2e).

p12However, this common regulator (2) is the upper side the pressure is approximately 8 kgf / ㎠ when the air pressure flowing into the while exhausting the air in the air passage the air pressure is gradually reduced pressure with the inlet (2c ') is reduced plunger (2d) formed there is a problem that does not need to be lowered. Because the plunger (2d) is reduced because the inlet (2c ') side reaction force due to the primary air which acts upon the top side does not need to be lowering the falling pressure forming is about 8 kgf / ㎠. Even plunger (2d), there is a problem in that the falling of about 5.5 kgf / ㎠ pressure when the air pressure of the primary air inlet pressure is more and (2c ') side of the reaction force to be further weakened. Accordingly, it is a general regulator 2 can not provide the primary air, always under reduced pressure to a pressure of about 8 kgf / ㎠.

p13Problem as described above is that the primary air flows into the inlet (2c ') provided in the same direction as the direction of stroke of the plunger (2d) acts as a repulsive force arises because the plunger (2d).

p14On the other hand, the above-described whistle (9) is a whistle cylinder 6 to the whistle body 7 of cylindrical shape as shown in Figure 3 is bolting by bolts (B). The whistle body (7) has a first through-hole in a longitudinal direction to the inside (7a) is formed as a straight line, first having a first through hole (7a) and the inclined second through-hole (7b) is formed as a communicating state. Then, the second through-hole (7b) is a nozzle (N) is coupled to an end. Whistle cylinder 6 is outlet hole (6b which is as vacuum hole (6a) is formed in the nozzle (N) and the adjacent portion, the air is discharged to the nozzle (N) and the spacing region to emit warning sound "beep" ) it is formed.

p15Here, the direct connection to the above-described whistle body 7 engaging groove (7c), the valve block (6) fixed to the end portion or above of the whistle cylinder (9a) shown in FIG. 1 by a coupler, not shown, it is formed do.

p16This whistle (9) guides the secondary air into the nozzle (N) through the second through-hole (7b) when the secondary air is supplied to the first through-holes (7a). Then, the nozzle (N) is an exhaust secondary air to the end portion. At this time, the whistle cylinder (6) is a vacuum hole (6a) 2 primary air has a pressure of about 8 kgf / ㎠ the bottom is formed discharged through the nozzle (N) since the periphery of the vacuum holes (6a) is vacuum momentarily . That is, the whistle cylinder 6 is lower by the vacuum in the fast flow rate of the secondary air. Thus, the vacuum holes (6a) is a binary discharge the external air whistle cylinder 6 by a pneumatic to whistle cylinder 6 outlet hole (6b) with the secondary air to be discharged from the nozzle (N) to the intake air to the interior of the thereby. Due to this and whistle cylinder (6) provides an audible beep. Of course, the outlet hole (6b) are so supplied to smoothly dissipate the alarm whistle of outside air cylinder 6 by the vacuum hole (6a).

p17However, such a whistle (9) penetrates not only to be formed in each of the first through-hole (7a) and the second through-hole (7b), as described above, after preparing a nozzle (N) apart from the second hole ( It is bound to 7b) so produced is consumed in excessive production costs ropgo very tricky.

p18The whistle body (7) is fixed by the engaging groove (7c) formed in a circle, because the operator in the work area rain or coated or receive interference in the structure around the rotation as a part or the whole shielding warning sound of the exhaust hole (6b) also fail to properly dissipating.

<p num="p19">The invention air can be supplied by a reduced pressure the air been made to solve this problem, the air in the air passage is reduced the amount of air in the air passage is provided by refraction even if the pressure is reduced the air supply passageway is always a constant pressure its purpose is to provide a prevailing regulator.</p><p num="p20">In addition, it is another object of the secondary air of an internal air passage structure is improved pressure regulator that provides the air prevailing final whistle is provided that alarm is emitted as a jet inclined state.</p>

<p num="p21">The present invention, the valve is a straight line the first valve chamber in which the air in the air passage flows filled with a reduced pressure state having a discharge flow path that is provided inside, discharging the air filled in the first valve chamber to achieve the above object housing; It is embedded in the first valve chamber in the valve housing, according to the air pressure of air to be charged in the first valve chamber to crack down the air passage of air flowing into the first valve chamber to a reduced pressure to the air passage of the air-pressure flowing into the first valve chamber pressure relief valve; And refractive means for providing and, by the refraction of the air passage of air to the first valve the pressure valve integrated in the chamber supplying the first valve chamber, the air in the air passage in the axial direction different from the direction of the first valve chamber, including do.</p>

<p num="p22">The above-described invention, since air of the air passage by the deflection means is provided in the refraction is the amount of air in the air passage is reduced even if the pressure is reduced the air supply is effective to supply the air in the air passage, always under reduced pressure at a constant pressure have.</p><p num="p23">Also, because the internal structure of the whistle is improved, while the secondary air injection pressure of the air passage in an inclined state to emit warning sound it can be easily prepared.</p>

p241 is a perspective view of the air applied prevailing safety alarm system normal regulators.

p25Figure 2 is a longitudinal sectional view of the regulator shown in FIG.

p26Figure 3 is a longitudinal sectional view of the shown in Figure 1 whistle.

p27A sectional view Fig. 4 is an exploded prevailing air regulator according to an embodiment of the invention.

p28A cross-sectional side view and a front sectional view Figure 5 shows a coupled state of the regulator illustrated in FIG.

p29A cross-sectional side view and a front sectional view Figure 6 illustrates an operating state of the regulator illustrated in FIG.

p307 is a front view decomposed state is coupled to the rapid charger regulator shown in FIG. 4.

p31Figure 8 is an exploded perspective view showing a state in which the regulator shown in Figure 4 fixed to the rucksack.

p32Figure 9 is an exploded perspective view showing the fixing means of the regulator illustrated in FIG.

p33Figure 10 is a side view showing the operating state of the regulator illustrated in FIG.

p34Figure 11 is a side view showing a state wherein the air passage is coupled to a regulator shown in Fig.

p35Figure 12 is a perspective view of the regulator shown in FIG.

p36Figure 13 is an exploded perspective view of the housing body and the housing cover in Fig.

p37Figure 14 is an exploded perspective view of the switch module shown in FIG.

p38[0113] Hereinafter, a air prevailing regulator according to an embodiment of the present invention with reference to the accompanying figures 4 to 14 as follows, and the accompanying Fig. 4 and Fig. 5 and Fig. 6 (b) is in the attached Figure 12 AA line and a longitudinal section, in the attached Fig. 5 and Fig. 6 (a) is a vertical sectional view taken along the line BB of the appended FIG.

p39The invention can be configured to include a valve housing 10, a pressure reducing valve 30 and the deflection means to be described later, as shown in Fig.

p40Valve housing 10 is provided in the through-state inside the air is flowing the first valve chamber 11, the straight line which is filled with a reduced pressure state of the air passage (AT) as shown in Figure 4 (a) And, the valve housing 10 has a discharge path (PS) for discharging the air filled in the first valve chamber (11). This discharge path (PS), for example, includes a bypass flow path 17 formed in the cover passage (11a) and the housing body (10a) to be described later is formed on the housing cover (10b) which will be described later as shown in FIG. 4 and it is configured.

p41A pressure reducing valve 30 is built into the first valve chamber 11 of the valve housing 10 as shown in Fig. 5 (b). And, a primary air of the pressure reducing valve 30 is introduced to the first valve chamber 11 in accordance with the primary pressure of the air filled in the first valve chamber 11 as described as described below, the air passage (AT) intermittent pressure to be the air pressure in the air passage (AT) that flows into the first valve chamber 11 to the secondary air having a pressure of about 8 kgf / ㎠.

p42Deflection means has a first valve to push the pressure-sensitive primary air different from the axial direction (longitudinal direction) of the first valve chamber 11, the direction of the air passage (AT) as shown in enlarged view in Fig. 5 (b) the chamber ( and supplies it to the 11) (see inset Fig. arrow). Thus, the deflection means may be provided (see Fig enlarged arrow) by refraction of the air passage to the primary air (AT) to the pressure-reducing valve (30) embedded in the first valve chamber (11).

p43Here, the deflection means described above are, for example, Fig. 5 (b) expanding the supply hole (12 for supplying the primary air of the air passage (AT) as shown by the first valve chamber 11 of the valve housing 10 to the ), the first valve chamber 11, the axial direction and to a perpendicular state formed in the valve housing 10, a primary air supply holes (12 perpendicular to each other for the air passage (AT) flows into the supply hole 12 of the ), and it it is preferable that the first valve chamber (perpendicular to bypass, as shown in enlarged view in the arrow by 11). That is, the deflection means can be configured by communication with a supply hole 12 and the first valve chamber 11 in a state orthogonal to each other. Thus, the deflection means is refracted by a primary air of the air passage (AT) is supplied to the valve housing 10 in a perpendicular state to provide a pressure reducing valve (30).

p44If it more detail, the primary air side to the supply of the first valve chamber 11 through the supply hole (12) orthogonal to the first valve chamber 11 as an enlarged shown in Fig. 5 (b) do. Then, the primary air is supplied as right-angle bends in the hole 12 of the first valve chamber 11 and the perpendicular is supplied to the first valve chamber (11). Therefore, the primary air is supplied to the built-in state is refracted perpendicular to the first valve chamber 11, a pressure reducing valve (30).

p45On the other hand, the above-described valve housing 10, for example, can be configured to include a housing body (10a) and the housing cover (10b) as shown in Fig. When you explain it in more detail as follows.

p46Housing body (10a) is formed in a block shape, as shown in Fig. 4 has a first valve chamber 11, in a spaced apart state and the above-described bypass path 17 of the first valve chamber 11 as shown in Fig. 6 (b) provided parallel to guide the air filled in the first valve chamber 11 to the outside.

p47The housing cover (10b) is provided in the form of grooves in the side cover is in flow path (11a) is formed into a plate-like described above, as shown in Fig. The housing cover (10b) has a first valve chamber of the cover passage (11a) and one end shield portion of the first valve chamber 11 is coupled to the housing body (10a) as shown in Figure 5 (b) of FIG as bolting 11, and thereby the above-described communication with the bypass passage (17). Thus, the cover passage (11a) is introduced into the first valve chamber 11 as shown in Figure 6, and coupled to communicate the first valve chamber 11 and the bypass passage (17) (b) a primary air of the air passage (AT) provided in the bypass flow path 17.

p48Here, the above-described flow path cover (11a) is in communication with the communication hole (51a) of the second valve chamber 51 to be described later, as shown in Fig. Then, the by-pass flow path 17 is in communication with the valve holder 27 and the mask flow path 19 of the relief valve 20 formed as a groove in the form of the housing body (10a), as shown in Fig.

p49On the other hand, the above-described pressure-sensitive valve 30 is, for example, can comprise a plunger (31), the elastic member 33 and the valve seat 35 as shown in Fig. A pressure reducing valve (30) is accommodated to enable round-trip in the first valve chamber 11 of the housing body (10a) as shown in (b) of Fig. 5 and Fig. A pressure reducing valve 30 does not escape to a side of the first valve chamber 11. Since the housing cover (10b) is coupled to one side of the housing body (10a) as shown in Fig. 5 (b). And, the pressure reducing valve 30 is shown in Figure 4, stopper case 36 is to be coupled to the other of the first valve chamber 11 as shown in Fig. 5 (b), the first valve chamber 11 as the other side of the shield is not leaving the other side of the first valve chamber (11). This pressure reducing valve 30 has a first valve by the other as described above the valve seat 35, a stopper 36, a first valve seat 35 when configured to be fixed to the other side of the valve chamber 11 as the chamber ( not leaving the other side of 11). That is, the pressure reducing valve 30, so the valve seat 35 is shielding the other side of the first valve chamber 11 does not exit side to the other of the first valve chamber (11). Of course, in such case the above-mentioned stopper 36 can be omitted. However, cap 36 is preferably configured with a valve seat 35, as will be described below in order to move the valve seat (35).

p50Here, the above-mentioned plunger 31 is built so as to be movable in the valve housing 10 as shown in Fig. 5 (b). Then, the plunger 31 is the un-reduced pressure of the first valve chamber 11 and the air passage (AT) to be supplied is refracted in the hollow (31a) of the first valve chamber 11, provided are parallel in the valve housing (10) the primary air flow path and guides the cover (11a) of the housing cover (10b) as shown in Fig. 6 (b). The plunger 11 is inserted into one end of the first valve chamber 11 adjacent to the flow path cover (11a) described above, as shown in Fig. 5 (b).

p51The above-mentioned plunger 31 is being pressed by the air to be charged to one end of the first valve chamber 11, while being guided in the cover passage (11a) through the hollow (31a) as shown in Fig. 6 (b) the pressing portion (31b) is provided. This pressing portion (31b) is preferably formed as a flange type as shown in Figure 4 to be easily filled in the air pressure in the one end of the first valve chamber (11). Thus, the plunger 31 is moved by the pressing portion (31b) which is pressed as shown in Fig. 6 (b).

p52The above-described pressing portion (31b) can comprise a flat surface (31b-1) and the stepped (31b-2) as shown in Fig. 5 (b). Flat face (31b-1) is to diffuse the air discharged from the hollow (31a) as shown in (b) is also formed on top of the plunger 31 as shown in Fig. 5 (b) 6 . Stepped (31b-2) has a pressing portion (31b) the air diffusion, as shown in (b) of FIG. 5 is formed on the rim of the flat surface (31b-1) 6, as shown in (b) It prevents the leakage to the outside.

p53On the other hand, the above-described elastic member 33 is fitted to the plunger 31 as shown in Fig. 5 (b) to support the plunger 31 elastically. Therefore, the elastic member 33 provides a reaction force to the pressing portion (31b) being pressed by the pressing force as shown in Fig. 6 (b).

p54And, the movement of as described valve seat 35 described above is inserted into the other side of the first valve chamber 11 as shown in Fig. 5 (b) shown in Fig. 6 (b) a plunger (31) while it is in contact with the plunger 31 by the closure and the hollow (31a) of the plunger (31). This valve seat 11 is formed in a disc shape, as shown enlarged in (b) of FIG. The valve seat 11 may be provided with a protrusion at the back as shown in enlarged view. The valve seat (11) is coupled closely with the stopper 36, as inserted into the stopper 36 is a projection will be described later, as shown in Fig. 5 (b).

p55On the other hand, the pressure reducing valve 30 may be configured to further include a sealing member 32 for sealing the outer peripheral surface of the plunger 31 as shown in Fig. 5 (b). This sealing member 32 is, for example, can comprise a gasket (32a) and the spring (32b), as shown in Fig.

p56Here, the above-mentioned gasket (32a) is, for example, consists of a rubber material of a ring shape, is fitted on the outer periphery of the plunger 31 as shown in Fig. 5 (b). And, a spring (32b) is resiliently supporting a gasket (32a) in the support state on the valve seat 35 as shown in Fig. 5 (b). Therefore, the gasket (32a) is in Fig. 6 (b) while supported by the spring (32b) as shown in, so sealing the outer peripheral surface of the plunger (31) supplying the ball is introduced into (12) the first valve chamber 11 a primary air of the air passage guide (AT) is prevented from being leaked to the outside of the plunger 31. That is, the sealing member 32 will seal the outer peripheral surface of the plunger 31.

p57In addition, the pressure reducing valve 30 may be further configured to include a position the above-mentioned valve seat 35, adjuster. This adjuster is, for example, can comprise a hole shape of the stopper holder 15 and the stopper 36 formed on the other side of the first valve chamber 11, as shown in Fig. Stopper holder 15 is formed as the other side of the first valve chamber 11, as shown in Fig hole expandability. Stopper 36 is fastened to the stopper holder 15, as shown in Fig. 5 (b) to close the cap holder 15. Stopper 36 to support the rear of the valve seat 35 in the state fastened to the stopper holder 15, as shown in Fig. 5 (b). Stopper holder 15 and the stopper 36 is formed with a screw thread corresponding to each other can be screwed together.

p58In this case, stopper 36 is unlocked, or tighten the screw coupled state the stopper holder 15. At this time, the valve seat 35 is moved while moving the position by the elastic force of the spring (32b). Thus, the plunger 31 has a stroke distance is adjusted as the position of the valve seat (35) moves. Of course, the plunger 31 may adjust the pressure ratio of the air pressure as will be described later, so that stroke regulation.

p59On the other hand, the guide between the pressure reducing valve 30, the plunger 31 and the valve seat 35, the primary air for flowing into the refraction through the above-described supply hole (12) the first valve chamber 11, the air passage (AT) the air induction means may be further configured to include. These air guide means, for example, is formed on the taper (34a) and valve seat (35) formed on the other end of the plunger 31, as shown in enlarged view in Fig. 5 (b) the tapered groove corresponding to the taper (34a) can comprise a (34b). That is, the plunger 31 and the valve seat 35 is formed in each end portion in a state matched to the tapered face (34a) and a tapered groove (34b) to each other.

p60Such te wipers (34a) and a tapered groove (34b) is by when the primary air inlet of the air passage (AT) to the supply hole 12 as shown in enlarged view in Fig. 5 (b), its inclination and curve guide the primary air between the smooth plunger 31 and the valve seat (35). Therefore, the primary air is guided to facilitate the hollow (31a) of the plunger (31).

p61On the other hand, the valve housing 10 may be provided with a mask flow channels 19 as shown in Fig. The mask flow path 19 is the air hose of the mask (MS), as shown in by-pass valve 17, and is communicated in Figure 5 (b) of the discharge path (SP) described above as shown in Figure 4 ( H) is connected. Thus, the mask flow channels 19 is to guide the secondary air pressure to a pressure of about 8 kgf / ㎠ discharged from the bypass path 17 to the outside of the valve housing 10, and provides the mask (MS).

p62On the other hand, the valve housing 10 can also be configured to further include a relief valve 20, as shown in Fig. This relief valve 20 is a second member for adjusting the air pressure to the set pressure of the pressure air discharged from the aforementioned discharge path (PS). The relief valve 20 is, for example, can comprise a relief valve seat 21, opening and closing member 23, the elastic body 25, a valve holder 27 and the stopper 29. As shown in Figure 4 . If more detailed information about this as follows.

p63A relief valve seat 21 is provided in Figure 4 and housing body (10a) as shown in, and has a by-pass flow path 17 communicating with an air hole (21a). Opening and closing member 23 is composed of a plate material attached to the rubber material or rubber material, to open and close the air hole (21a) of the valve seat 21 as shown in (b) of Fig. 5 and Fig. The elastic body 25 is elastically supports the opening and closing member 23, as shown in Fig. 5 (b). Valve holder 27 as shown in Figure 4 is provided with grooves form a housing body (10a), also an elastic body 25, as shown in Figure 5 (b), the opening and closing member 23 and the stopper (29 ) to be accommodated. Stopper 29 is fixed to the valve holder 27 as shown in Fig. 5 (b) to prevent the departure from the elastic body 25, a valve holder (27). Stopper 29 is formed in the vent-hole (29a) for discharging to the outside the center of the valve holder 27, the air discharged to the air hole (21a), as shown in Fig.

p64Here, a valve holder 27 and the stopper 29 described above is the case of forming a screw thread corresponding to each other on each of the inner circumferential surface and outer circumferential surface can be screwed together. At this time, the stopper 29 while the forward rotation or reverse rotation in the valve holder 27 can adjust the elastic force of the elastic body (25). Thus, the relief valve 20 may be adjusted, so the pressing force adjustment of the opening and closing member 23 in accordance with the control spring force is discharged to the vent hole (29a) through the elastic force of the elastic body 25, the exhaust pressure of the elastic body (25) .

p65On the other hand, the valve housing 10 may be configured to further include a detector 50, as shown in Fig. These detectors 50 is the discharged from the discharge path (PS) for, as will be described later air passage (AT) the first valve chamber 11 is provided with a valve housing in which air is flows charged in a depressurized state 10, pressure air an alarm is provided in accordance with the air pressure. that is, the detector 50 is exhausted the air in the air passage (AT) provides a warning d by the air pressure of the secondary air when the remaining amount alarm to ventilate the area of ​​the operator.

p66Detectors 50 is, for example, the second valve chamber 51, spool 52, the reaction force spring 53, cap 54, the communication passage 55, first branch channel (56 as shown in Figure 4 ) and it may be configured to include a warning member that is described below. If more detailed information about this as follows.

p67First, the aforementioned second valve chamber 51 has a cover passage (11a) communicating with the communication hole (51a) provided on one side and the other side of which is opened in the valve housing 10, as shown in Fig. Such second valve chamber 51 is formed in the housing body (10a) in a parallel state with the first valve chamber 51, as shown in Fig. The second valve chamber 51 is a first quarter of the channel 56 branch to be described later, as shown. Therefore, the communication hole (51a) is in communication with the second valve chamber, a first branch channel 56 through 51.

p68Next, the above-mentioned spool 52 is in the un-reduced pressure reservoirs which are embedded in the second valve chamber 51, flows into the valve housing (10) (AT), as shown in (b) of Fig. 5 and 6 moving by the primary air is a member for opening and closing the communication hole (51a). This spool 52 has a cap flow path (54a) of the cap 54 to be described later, as shown in (b) as shown in Figure 4 has one end with a projection (52a) provided on the, 5, and 6 the projection (52a) is embedded in the second valve chamber 51 with the inserted round trip state.

p69Then, the aforementioned reaction force spring 53 is a member for providing a reaction force for the air in the air passage (AT) to the spool (52). This, is built into the reaction force spring 53 is 5 (b) is fitted to the other end of the spool 52 as the illustrated, the spool second valve chamber 51 with a 52 degree to the spool (52) The resiliently supported. A reaction force spring 53 is 6 (b), while the compression case be provided with a cap 54, cap air pressure of the primary air in the flow path (54a) of the as shown communicating with the spool 52, balls (51a) FIG. mobile and, if the air pressure passage provided to the cap (54a) to be weakened as the expansion as shown in Fig. 5 (b) to move the spool 52 in the direction of the cap 54 is installed.

p70Then, the above-described cap 54 Fig. 5 and Fig. 6 (b) of the second valve, as shown in the chamber 51 to shield the other side of the reaction force spring 53 and the spool 52. The second valve chamber of to prevent the departure from the 51. Cap 54 is preferably screwed to the other side of the second valve chamber (51). This cap 54 prevents the primary air in the illustrated gasket (54b) is installed charging passage (73) to be described later is formed on the outer circumferential surface is provided as a spool (52). Therefore, the gasket (54b) prevents the second valve toward the other primary air entering the chamber 51 flows into the communication hole to a side of the second valve chamber 51 (51a) is formed.

p71Subsequently, the above-described communicating passage 55, is the element which provides the primary air passage of the air pressure-US (AT) in the first valve chamber 11 is directly connected with the spool 52 of the valve housing 10. The communication passage 55 is, for example, as shown in Figure 4 the valve housing 10 of the first valve chamber 11, described above, as is directly illustrated in the flow path (55a) and 5 directly connected with a cap (54 ) cap can be configured to include a passage (54a) formed in the. Direct flow path (55a) is provided in the first valve chamber 11 mi under reduced pressure The primary air flow to the cap (54a) which is supplied from, as shown enlarged in the upper right of the (b) shown in FIG. Thus, as the cap flow passage (54a) is shown enlarged to provide the primary air of the high pressure non-pressure to the spool 52 to move the spool 52 in the communication hole (51a). Of course, the spool 52 is to prevent the operation of the alarm member, as will be described later to close the communication hole (51a) as shown in FIG. 6 (b) of FIG move.

p72Subsequently again, as shown in the above-mentioned first branch flow path 56 of Fig. 5 (a) is communicated with the second valve chamber 51, the whistle is below the secondary air flowing into the communication hole (51a) (HS) and a whistle by-pass hole (HH) is a bond. Therefore, the first branch channel 56 is to provide a secondary air flowing into the communication hole (51a) to the whistle (HS) operates the whistle (HS).

p73Finally, the above-described alarm member is a member that provides a warning by the air by-pass into the first branch channel 56. This, alarm operating member is in accordance with the air pressure of air to be filled in the second valve chamber 51 in a state installed in the valve housing (10). Therefore, the operator can easily grasp the state of the exhausted air.

p74Alarm member is, for example, can be configured as a whistle (HS) which emits a warning sound by the secondary air supplied from the first branch flow path 56 as shown in Fig. 5 (a). This whistle (HS) is, for example, may comprise a whistle body (HS2) and a whistle cylinder (HS1) as shown in Fig.

p75The whistle body (HS2) have a nozzle passage (NP) to the inside as shown in Fig. The nozzle flow path (NP) is formed in the end of the other end is narrowed so that the compressed air is discharged from the other end from one end of the lower side has an inclination to the upper side, the other end as shown in Fig. The whistle body (HS2) is easy to manufacture since, unlike the conventional forming only the slope formed nozzle passage (NP). Such a whistle body (HS2) is replace, the end of the other end of the above-described conventional nozzle narrowly formed (see Fig. 3). Thus, the whistle body (HS2) may omit the conventional nozzle. Of course, the whistle (HS) is the production cost savings is not only easy to manufacture it is possible to omit the conventional nozzle.

p76In addition, the whistle (HS) is a whistle body (HS2) the second through-hole (7b) one nozzle passage (NP) just formed so formed a first through-hole (7a) of that shown in Fig aforementioned three straight and inclined to the which consists of a very simple structure than conventional whistle. Thus, the whistle (HS) may improve the ease of manufacturing.

p77Whistle cylinder (HS1) is coupled to the whistle body (HS2) by bolting or screwing, as shown in Fig. Whistle cylinder (HS1) has a vacuum hole (HS1b) and discharge holes (HS1a) As shown in the enlarged Fig. 5 (a). A vacuum hole (HS1b) is a whistle body (HS2) of the nozzle passage (NP) outlet hole (HS1a) to intake the outside air has a high pressure air by a whistle cylinder (HS1) vacuum inside generated when discharged from the supply. Then, the discharge hole (HS1a) is radiating an alarm while discharging the air supplied from the air and vacuum holes (HS1b) exiting the nozzle passage (NP).

p78This whistle (HS) is 5 (a) is screwed (HS4) to the whistle hole (HH) of the housing body (10a), as shown the second valve chamber 51, the first branch flow path branched from ( 56) it is supplied from the secondary air. Thus, the whistle (HS) warns that the while by supplying the secondary air in the first branch channel 56 through the nozzle passage (NP) in the outlet hole (HS1a) radiating an alarm air in the air passage (AT) exhaustion . Such a whistle (HS) can be continuously emitted by the alarm sound, unlike the prior art is not so threaded in the ball whistle (HH) rotating even if the interference with the work area or rain or covering structure of the periphery of the worker.

p79On the other hand, the above-described warning member may be configured to include a first diaphragm 61 and the switch module (SM), as shown in otherwise described above, for example Fig. That is, the alarm element may be configured to include a first diaphragm 61 and the switch modules instead of the above-described whistle (HS) (SM).

p80The first diaphragm 61 also consists of a rubber material of the disc shape as shown in Fig. 14, Fig. 5 (a), the communicating with the second valve chamber 51 as the illustrated second branch channel (56 the operation by the secondary air discharged from) 'is fixed to a), second branch channel (56, as shown enlarged in FIG. 6 (a). In other words, the first diaphragm 61 is actuated by the secondary air in the second valve chamber (51). The first diaphragm 61 has a second branch channel (56) If the secondary air is discharged, FIG. 6 (a) expanding the valve housing (10 and expanded by the secondary pressure of the air as shown in in ) is convex to the outside of the protruding. At this time, and the first diaphragm (61) is to light the warning lamp (LP1), not shown, presses the first switch (63b) of the switch module (SM), as shown enlarged in FIG. 6 (a).

p81Switch module (SM) is a member for operating the warning lamp (LP1) by the above-described first diaphragm 61. Such switch modules (SM), for example, can comprise a fixing plate (63a), the first switch (63b), a circuit board (63c) and the case (63d) as shown in Fig.

p82The fixed plate (63a) is fixed to the first diaphragm 61 is in close contact with the housing body (10a) as shown in Fig. 5 (a) to the end of the second branch channel (56 '). A first switch (63b) is first during deformation of the first diaphragm 61 as shown in enlarged view in (a) of the first diaphragm 61, and spaced apart, and FIG. 6, as shown in Fig. 5 (a) as the pressure in the first diaphragm (61) is a switching operation.

p83Thereby the circuit board (63c) is to light the warning lamp (LP1) of the first switch (63b) a pressure gauge shown in Fig. 8 by generating the control signal in accordance with the switching of (GP). Therefore, the warning lamp (LP1) is warning the depleted state of the reservoir, while flashing (AT).

p84Case (63d) is on the valve housing 10 as a receiving a first switch (63b) is installed, the circuit board (63c) is fixed to the inner side, the fixed plate (63a) as shown in Fig. 5 (a) state It is provided.

p85On the other hand, the above-described warning member may be the second diaphragm 62 and the second switch 65 is further provided, as shown in Figure 6 (a). The second diaphragm 62 is configured the same as the first diaphragm 61 described above, as shown enlarged in FIG. 6 (a). The second diaphragm 62 is fixed to the end of the communication line (64) in communication with the bypass flow path 17 by the above-mentioned fixed plate (63a) as shown in Figure 6 (a). This causes the second diaphragm 62 is deformed as to be convex by operating the secondary air supplied from the communication line (64) presses the second switch 65 is installed on the circuit board (63c). That is, the second diaphragm 62 presses the second switch 65 as deformed convexly by the secondary air so fed to the communication line 64, the secondary air supplied from the bypass flow path 17 switched do. At this time, the circuit causes the substrate (63c) is to light the position indicator (LP2) of the unillustrated rucksack in accordance with the switching operation of the second switch 65.

p86The second diaphragm 62 is constantly urged in the second switch (65) when the secondary air is continuously supplied to the bypass flow path 17, as shown in Fig. Thus, the second diaphragm 62 is blinking the position indicator (LP2) until the air in the air passage (AT) to be exhausted from the time that the first supply.

p87On the other hand, the valve housing 10 may further include a gauge actuator 70, as shown in FIG. These gauges actuator 70, by providing a pressure gauge (GP) as shown in Figure 8 is associated with the air passage (AT), the primary air in the US under reduced pressure of the air passage (AT) is provided in the above-described communicating passage 55, a member for operating the gauge pressure (GP).

p88Gauge actuator 70 is, for example, can be configured to include a charging passage 73 and the flow gauge 75, as shown in Fig.

p89Charging passage 73 are formed by a groove shape in the circumferential direction on the outer peripheral surface of the cap 54 as shown in Fig. 5 (b), the cap 54, as embedded in the second valve chamber 51 the second valve chamber is filled in the interior of the primary air 51 and provides a space for perfusion. At this time, the charging passage 73 is supplied to the second valve chamber 51, the primary air supplied through the direct flow path (55a) of the communication passage 55. As enlarged view in Fig. 6 (b).

p90Gauge passage 75 is the second valve chamber 51 communicates with a pressure gauge (GP) associated with the air hose (H) as shown in Figure 8 is connected as shown in Fig. 6 (b) through the air hose (H) provides the primary air charge to the second valve chamber 51, the pressure gauge (GP). At this time, flow gauge 75 provides a primary air of the second valve chamber (51) charged by the aforementioned charge flow path 73 to a pressure gauge (GP). Thus, the pressure gauge (GP) is a manifestation of the remaining air in the air passage grid (AT) by the primary air in the second valve chamber 51 is provided through the passage gauge (75).

p91On the other hand, flow gauge 75 may be formed such that a direct communication to the outside of the valve housing 10 from the supply hole 12 otherwise shown. That is, the gauge passage 75 is formed in a state of direct to the second valve chamber 51 and the communication passage is in communication with the direct flow path (55a) of the 55 supply is not connected to the supply hole 12 hole 12 It may be. Accordingly, the gauge passage 75 may receive supply of a direct air passage to the primary air (AT) from the supply hole 12 to provide a gauge pressure (GP). In this case the flow gauge 75 can be a very simple configuration. It is because it is so configured that information, one skilled in the art can readily appreciate that the detailed description thereof will be omitted.

p92On the other hand, the valve housing 10 is coupler (CL) is connected to the supply hole 12, as shown in Fig. The valve housing 10 is a boss (12a) formed on a supply hole 12 as shown in Figure 12 to connect the coupler to facilitate (CL).

p93Here, the above-mentioned coupler (CL) is, for example, may comprise a knob (12b) and socket (12c), as shown in Fig.

p94Knob (12b) is in the air passage (AT) through the central pipe (12b-1) as shown in Fig provided by the integral central pipe (12b-1) in the center, is formed in a disc shape, as shown in Fig. 11 It is connected to the connector (C) and screwed. The socket (12c) is guiding the primary air are joined in the state inserted in the central pipe (12b-1) of the knob (12b) reservoirs (AT) to the supply hole 12 of the valve housing 10. Thus, the coupler (CL) is easily supplied to the interior of the valve housing 10, the air in the air passageway and coupled easily (AT) through the knob (12b), through a socket (12c), the air passage (AT).

p95On the other hand, the valve housing 10 may further include a rapid charger 90, as shown in Fig. Charger 90 thereby through the valve housing 10 is rapidly filled with the air in the air passage (AT) other air passage (AT). This rapid charger 90 may be configured to include the adapter 91 and the charging passage (95) as shown.

p96Adaptor 91 has a reverse flow of air to be supplied as shown in Fig. 7 is detachable to the connector (C) of the other air passage (AT2) supplying air supplied from the other air passage (AT2) in the valve housing (10), are a built-in prevention check valve 93 which. This, the adapter 91 is mounted in the screwed on one side of the valve housing 10 is filled flow path (95) formed.

p97The charging passage 95 has a guide 6 (b) and the first valve chamber 11, the air supplied is formed in the valve housing 10 as shown in Figure 7 via the adapter 91. FIG. Thus, the charging passage (95) is as shown in Fig. 7 to guide the air in the other air passage (AT2) in the first valve chamber 11, the first valve chamber 11 and the supply hole (12 communicates with the orthogonal ) and through a boost charge air to the air passage (AT) fixed to unillustrated backpack. That is, rapid charger 90 is filled the air of the air passage (AT) when the air is exhausted, the other air passage (AT2) are connected by connecting the air in the other air passage (AT2) in the air passage (AT) in the air passage (AT) can do. This rapid charger 90 may be useful in emergency situations that can not be charged normally air.

p98On the other hand, the valve housing 10 may further include a fixing means 80 such as shown in Fig. This, fixing means (80) enable flowing the rucksack (BP) in the valve housing 10 to be worn on the deungheori operator with by the belt (BT) the air passage (AT) is mounted state as shown in FIG. 8 a member for fixing. These fixing means 80 is, for example, can comprise a bracket (81), overlapping bracket 83 and the hinge 85 as shown in FIG.

p99The bracket 81 is formed of a yoke type as shown in Figure 9 provides a plurality of protrusions on both sides. This bracket 81 is provided on the back of the rucksack (BP), as shown in FIG.

p100Nesting bracket 83 is inserted between the protrusions of the bracket 81, after penetrating the through hole (81a) formed in the backpack (BP) provided in the valve housing 10 as shown in Figure 9 the bracket (81 ) and is superimposed. This overlap the bracket 83 may be formed in a plate shape, unlike shown in block form can be formed as shown in FIG.

p101A hinge (85) is rotatably coupled to the nested state the bracket 81 and the nested brackets 83, as shown in FIG. Thus, valve housing 10 is secured to the backpack (BP), as shown in Figure 10 to be connected to facilitate a connector (C) of the air passage (AT) on the coupler (CL) as shown in FIG. 11 a hinge (85) flows as a rotary axis. That is, the connector (C) of the coupler (CL) and the air passage (AT) are coupled to facilitate fixing by means (80).

p102Here, the above-mentioned hinge (85) is, for example, can be composed of a bolt pin which is engaged with the nut as shown in FIG.

p104Referring to the operation of the air prevailing regulator according to an embodiment of the present invention as described above are as follows.

p105The side of the supply hole 12 is enlarged view of an air passage (AT) of about 300 kgf / ㎠ first valve chamber 11, the non-pressure-sensitive primary air having a pressure of supplied in as described in (b) of FIG. 5 It is supplied. At this time, the primary air is then expanded shown because supply hole 12 and the first valve chamber 11 are orthogonal as described as a right angle bends in the supply between the pressure-reducing valve 30 and the valve seat 35, a pressure reducing valve ( It is introduced into the hollow (31a) formed on the plunger 31 of 30). The hollow (31a) guides the air introduced into the first pressing portion (31b) of the plunger (31). Then, the pressing portion (31b) is to spread the incoming air over the flat surfaces (31b-1), and intermittent leakage of the air diffused through a stepped (31b-2). Thus, the first valve chamber 11 and air is filled in one end portion are formed pressing portion (31b) of the plunger 31 as shown in Fig. 6 (b).

p106Plunger 31 has a pressing portion (31b) is pressed when the air is filled in one end portion of the charge air pressure in the first valve chamber 11 reached approximately 8 kgf / ㎠ by the air pressure. At this time, the plunger 31 is moved while compressing the elastic member 33 as shown in Fig. 6 (b). Then, the plunger 31 while being in close contact with the valve seat 35 to close the hollow (31a). Accordingly, the first valve chamber 11 does not flow any more air after the air has a pressure of about 8 kgf / ㎠ charge. That is, the first valve chamber 11 is only air having a pressure of about 8 kgf / ㎠ is present therein. Thus, the valve housing 10 is a pressure-sensitive primary air flowing into the supply hole 12 by the pressure reducing valve 30 to operate as described above, the secondary air having a pressure of about 8 kgf / ㎠.

p107The valve housing 10, so sealing the outer peripheral surface of the plunger 31 as supported by a gasket (32a) the spring (32b) of the sealing member 32 as shown in (b) of Fig. 5 and 6 state a first valve in the air does not flow into the chamber 11 is supplied to one end portion of the first valve chamber 11 in the pressing portion (31a) of the plunger (31).

p108On the other hand, the cover passage (11a) formed in the housing cover (10b) is supplied to the second the secondary air by-pass flow path 17 filled in the first valve chamber 11 as shown in Fig. 6 (b) Mask It is discharged to the mask (MS) through a channel (19). Thus, the wearer can breath through the mask (MS).

p109Thus, when air is discharged through the bypass flow path 17, the first valve chamber 11 is reduced because the urging force of the charge air is exhausted, the plunger (31). Thus, the plunger 31 is again spaced apart from the valve seat (35) and return to the original position as the elastic member 33 restores the circular, as shown in Fig. 5 (b). At this time, the supply hole 12 is again air passage (AT) of the US reduced pressure primary air to supply to the first valve chamber 11, plunger 31, the first valve chamber 11, through the hollow (31a) of charge the air on one side.

p110Of course, the plunger 31 has a primary air in which case the charge air reaches approximately about 8 kgf / ㎠ while repeating the operation as described above, supplied to the supply hole 12, the air passage (AT) approximately 8 kgf / the reduced pressure at a pressure of ㎠. The plunger (31) is the pressure ratio is adjusted so cap (36) a forward or rotate the valve seat (35) stroke change when you move the station.

p111On the other hand, the relief valve 20 is the second case the air is supplied, Fig. 5 (b) opening and closing member is supported elasticity to the elastic body 25, as shown in 23, a reduced pressure in the bypass flow path 17 the shield through the air hole (21a) of the valve seat 21. However, the relief valve 20 is the bypass flow path 17 in the case of higher than the air pressure air pressure is set, shown in Figure 6 (b), the opening and closing member 23 by the elevated pressure as the elastic body (25) compresses the air and open the ball (21a) of the valve seat 21. At this time, as leakage through the outer peripheral surface of the opening and closing member 23, as shown in the secondary air 6 (b) of FIG supplied to the bypass flow path 17 outside through the vent hole (29a) of the stopper (29) It is discharged to. Therefore, the by-pass flow path 17 is maintained the internal pressure safely.

p112This by-pass flow path 17 supplies the air to the communication line 64 in communication, as shown in Figure 6 (a). Communicating line 64 causes expansion convexly a second diaphragm (62) by supplying air to the second diaphragm 62, as shown enlarged in FIG. 6 (a). At this time, the second diaphragm 62 presses the second switch 65 to light up and the like (LP2) position shown. Thus, the position indicator (LP2) is a manifestation of the position of wearing the backpack (BP) workers into the light. Of course, the position indicator (LP2) is because air is continuously supplied to the bypass flow path 17 as light to the point where the supply of the air stop from the time that air is supplied to the bypass flow path 17 for the operator to breathe It continues to be a manifestation position.

p113On the other hand, the first valve chamber 11. The communication passage 55 is directly connected flow path (55a) is a first valve chamber (11 through a supply hole 12 as shown by an arrow in Fig. 6 (b) in communication with the ) it is supplied with a primary air of the high pressure flowing into the non-pressure-sensitive in a first valve chamber (11). Then, the direct flow path (55a) is provided in the cap flow passage (54a) and the groove form of the filling passage 73 formed in the cap 54, as shown by an arrow in Fig. 6 (b). The charging passage 73 supplies air to a gage pressure (GP) is connected to the air hose (H) to supply air flow path of the high pressure on the gauge 75 as shown by an arrow in Fig. 6 (b). Accordingly, the pressure gauge (GP) is activated by a high-pressure air supplied through the air hose (H) is a manifestation of the remaining air passage (AT).

p114Here, the projections (52a) of the above-described cap flow path (54a) is enlarged view of a spool (52) in the US of even the primary air of the pressure in the high-pressure 6 (b) supplied from the charging passage 73, as described above and it supplies the. At this time, the spool 52 closes the communication hole (51a) to move while compressing the reaction force spring 53 by a primary air of the high pressure, as shown in Fig. 6 (b). Therefore, the communication hole (51a) is a spool closed because of FIG. 6 (b) shown in the illustrated first branch channel 56 and in Figure 6 (a) first to the second branch flow path (52) (56 ') and it does not communicate.

p115On the other hand, the air passage (AT) is the air is exhausted as time elapsed the pressure is gradually reduced. This air passage (AT) when the air is exhausted much is weakened at a pressure of about 300 kgf / ㎠ a pressure of about 30 ~ 50 kgf / ㎠. Therefore, the air passage (AT) is supplied to the primary air in the weakened pressure. At this time, the supply hole 12 of the valve housing (10) supplies the primary air is weakened to a pressure of 30 ~ 50 kgf / ㎠ to the first valve chamber (11). However, the pressure reducing valve 30 has a plunger 31, without the influence of the so attenuated primary air is refracted by the supply hole 12 is chamber 11, the first valve orthogonal supply weakening primary air It activates the same. In other words, in the prior art, the plunger closing the inlet that the plunger is moved to the primary air is introduced in the pressure (pressing force) of less than or equal to about 8 kgf / ㎠ when weakening the pressure of the primary air be influenced of primary air directly, but , the pressure reducing valve 30 of the present invention operates only on the pressure (pressing force) of about 8 kgf / ㎠ because the primary air is supplied to the stroke direction of refraction different from the direction (lateral) of the plunger (31). Therefore, the pressure reducing valve 30 is opened and closed by the pressure of the primary air and always the same no matter what the supply hole 12 while moved by the pressing force of about 8 kgf / ㎠ and the intermittent inflow of the primary air. Of course, this reason the valve housing 10 may be provided in the air passage (AT) of the amount of air and no matter always continue the air pressure at a constant pressure (a pressure of about 8 kgf / ㎠).

p116On the other hand, provide the primary air weakened when the second valve chamber 51 in communication with the above-described direct flow path (55a) is attenuated primary air flows into the first valve chamber 11 to the charging passage (73) do. Fill flow path 73 is provided by a weakening in the primary air flow gauge (75) through a pressure gauge (GP) determine the remaining amount of the air passage (AT). And, it provides a direct flow path (55a) 5 (b) in the primary air to the spool 52 through the weakened cap passage (54a) as shown in Fig. At this time, a reaction force spring 53 is installed, the spool 52 that the primary Fig cap 54, the spool 52 while the expansion as shown in Figure 5 (b), as this weakens the pressure of the air supplied to the direction move. Therefore, the spool 52 opens the communication hole (51a) who moves while closed.

p117Receives the communication hole (51a) is supplied to the secondary air pressure to be supplied to the spool 52, as opened by the movement bypass flow passage through the cover (11a), (17) a. The communication hole (51a) is supplied to the secondary air inlet in FIG. 5 (a) and (b) of the first branch channel 56 and the second branch flow path 56 'in communication, as in the illustrated. In this case, the first branch flow path 56 is provided by a whistle holes (HH), as shown enlarged in 6 (a), the secondary air and operates the whistle (HS). And, second branch channel (56 ') is supplied to the first diaphragm 61 as shown enlarged in FIG. 6 (a), the secondary air. Of course, and the first diaphragm 61 is deformed to be convex, while the secondary air by the air pressure so as to operate the first switch (63b) to light the warning lamp (LP1) of the pressure gauge (GP). Therefore, Whistle (HS) and the warning lamp (LP1) is warning the state of the reservoir is depleted air (AT) with sound and lighting.

p118Here, the above-described whistle (HS) are smoothly divergent nozzle, so the warning sound passage (NP) of the whistle body (HS2) is formed inclined, the nozzle flow path (NP) of the end is narrowly formed. Then, a whistle (HS) is the whistle body (HS2) is screwed to the whistle hole (HH), so continue to emit a beep does not work even if the worker rotates're also in contact with objects such as cloth.

p119On the other hand, the valve housing 10 is fixed to the nested brackets 83, the backpack hinge (85) to the bracket (81) installed in the (BP) of the fixing means 80, as installed on one side shown in Figure 10 the air passage ( If the connector (C) of the AT) is connected to the flow. Thus, the valve housing 10 can be connected easily with the air passage (AT). If, if not provided with a fixing member 80 to the valve housing 10, the operator valve housing 10, the supply hole of the connector (C) carrying a heavy air passage (AT) as a do not flow valve housing 10 It shall repeat the operation for matching (12). This is because the connector of the air passage (AT) (C) is a metal material because it is easily formed in a straight line does not match with the supply hole 12 of the valve housing 10. However, the present invention since the fixing member 80 is provided in the valve housing 10 can be easily connected to the air passage (AT) in the valve housing (10).

p120On the other hand, the valve housing 10 is different, as shown in FIG si run out of, the air passage (AT) when mounting the adapter (91) of the quick charger 90, as shown in Fig. 5 (b) It may boost charge air to the air passage (AT2). At this time, air in the other air passage (AT) through the charging passage and then supplied to the first valve chamber 11 through 96, the first valve chamber 11 communicates with the supply hole 12, the air passage (AT) to be filled. Therefore, the operator is likely to result urgently to supply air upon depletion of the air passage (AT) can prevent a safety accident, can continue to proceed with the operation.

p122The above-described embodiments are therefore merely described the preferred embodiment of the invention, the scope of the present invention is not limited to this, such as, the appropriate changes are possible within the scope of the same idea. Therefore, it may be carried out by the shape and structure of each component is shown in the modified embodiment of the invention, the deformation of such a shape and structure belonging to the appended claims of the present invention is obvious.

p123The invention may be of the air, so the air passage by the deflection means are provided in the amount of air refraction of the air passage is reduced the supply air pressure is reduced under reduced pressure to provide an air passage of the air always at a constant pressure. Thus, it is applicable to a variety of devices for supplying a fluid such as the air passage to the predetermined pressure.