Hinge device

The present invention relates to a hinge device used for a switchgear in which a switchgear such as a display opens and closes.

In a switchgear such as a switchgear display device, a hinge device is used to open and close a switchgear such as a display (see, for example, Patent Documents 1 and 2). The hinge device disclosed in Patent Document 1 is composed of a left hinge portion and a right hinge portion attached to both the left and right sides of a display, and the hinge portion has five parts on one side (bracket, shaft, click washer, spring plate and flat washer). Consists of. A bracket is attached to the main body of the display device, a shaft is passed through the bracket, and a display is attached to the tip of the shaft. A click washer is sandwiched between the bracket and the display. Further, the other tip of the shaft protrudes from the surface of the bracket opposite to the display, and the spring plate and the flat washer are fitted in this tip. This shaft has a complicated shape for assembling each part. Further, a concave portion is provided on one of the facing surfaces of the click washer and the display, and a convex portion is provided on the other side, and the uneven portion engages when the display is opened and closed to hold the posture of the display at a predetermined opening / closing angle position.

<p><patcit num="1"><text>Japanese Unexamined Patent Publication No. 2006-168402</text></patcit><patcit num="2"><text>Japanese Unexamined Patent Publication No. 2006-105275</text></patcit></p>

<p num="0004"> Since the conventional hinge device is configured as described above, since the left and right hinge portions are independent, variations between the left and right tend to occur when manufacturing the hinge portion and when attaching the hinge portion to the display device. Due to this variation, there is a problem that the left-right rotation position shift and the opening / closing load variation become large. For example, in the case of the hinge device of Patent Document 1, when the click washer and the uneven portion of the blanket are engaged, the timing at which the convex portion enters the concave portion tends to shift between the left and right hinge portions. In addition, there is a problem that the number of parts is large, and in particular, the shaft is complicated to process and the cost is high.</p><p num="0005"> The present invention has been made to solve the above-mentioned problems, and suppresses the variation between the left and right hinge portions when manufacturing the hinge portion and when attaching to the opening / closing body to prevent the left and right rotational position deviations. The purpose is to prevent it.</p>

<p num="0006"> The hinge device of the present invention has a rotation shaft portion as a rotation center axis, has a hinge base attached to the opening / closing device main body, and has a rotation shaft hole through which the rotation shaft portion is inserted, and is attached to a display to rotate integrally. A pair of hinge portions having a holder to be provided are provided, and the pair of hinge portions connect both hinge bases via a hinge base connecting portion according to the distance between the two holders, and the hinge portion is provided between the hinge base and the holder. The hinge base is equipped with a click washer that is positioned, inserts the rotation shaft, engages with the holder in a predetermined position, rotates integrally with the holder, and has one of the uneven parts for clicking, and the hinge base is the uneven part for clicking of the click washer. The other side of the uneven part for clicking that engages with one side to generate a click action is provided on the circumference centered on the central axis of rotation, and the hinge base is burring processed to project the hinge base. For the pair of hinges, both holders are connected via the holder connecting portion, both rotating shafts are projected on the unidirectional surface of both hinge bases, and both holders are unidirectionally connected to both rotating shafts. Fix the holder, hinge base, and click washer by caulking the burring part of the hinge base, and at one hinge part, one of the click uneven parts of one click washer is the other of the hinge base click uneven part. At the other hinge portion, one of the click concave-convex portions of the other click washer engages with the other of the hinge-based click concave-convex portion.</p>

<p num="0007"> According to the present invention, the pair of hinge portions is a pair when manufacturing the hinge portion and when attaching the hinge portion to the opening / closing body by connecting both hinge bases via the hinge base connecting portion in accordance with the distance between the holders. It is possible to suppress the variation between the hinge portions and prevent the rotational position shift between the hinge portions.</p>

<figref num="1">It is a perspective view which shows the structure of the display which attached the hinge device which concerns on Embodiment 1 of this invention.</figref><figref num="2">It is a perspective view which shows the structure of the hinge device which saw the display shown in FIG. 1 from the opposite side.</figref><figref num="3">It is an exploded perspective view which shows the structure of the hinge device which concerns on Embodiment 1 of this invention.</figref><figref num="4">It is a side view which shows the structure of the display shown in FIG. 1, FIG. 4A shows a closed state, and FIG. 4B shows an open state.</figref><figref num="5">It is a perspective view which shows the modification of the hinge device which concerns on Embodiment 1 of this invention.</figref><figref num="6">It is an exploded perspective view which shows the structure of the hinge device shown in FIG.</figref>

Hereinafter, in order to explain the present invention in more detail, a mode for carrying out the present invention will be described with reference to the accompanying drawings. Embodiment 1. In the first embodiment, a display device will be described as an example of a switchgear to which the hinge device is applied. As shown in FIG. 1, the display (opening / closing body) 1 has a screen 2 on one side, and two lower edge portions are rotatably supported by a hinge device 100. For convenience of explanation, the side of the display 1 where the screen 2 is located is the front side, and the left and right sides are called differently when viewed from the front side. The main body of the display device is not shown.

FIG. 3 is an exploded perspective view showing the configuration of the hinge device 100 shown in FIG. As shown in FIG. 3, the hinge device 100 includes an integral holder 10, an integral hinge base 20, and two click washers 30a and 30b.

The integrated holder 10 is composed of left and right holders 11a and 11b and a holder connecting portion 12 that connects the left and right holders 11a and 11b. The holder connecting portion 12 is a member for attaching the display 1, and a slip prevention portion 13 for preventing the display 1 from slipping is formed. The holders 11a and 11b may not be integrated by using the holder connecting portion 12, but the holders 11a and 11b may be directly attached to the lower edge portion of the display 1 and integrated. Further, the slip stopper 13 may not be provided.

In the left holder 11a, a rotation shaft hole 14a through which the rotation shaft portion 23a serving as the rotation center axis is inserted is formed, and three positioning recesses 15a for integrating with the click washer 30a are formed. The right holder 11b has the same configuration as the left holder 11a. However, the connecting portion between the holder 11b and the holder connecting portion 12 functions as a stopper 16 that regulates the opening / closing operation of the display 1 within a predetermined opening / closing angle range. Since the stopper 16 straddles the hinge base 21b, when the integrated holder 10 rotates to a predetermined rotation angle position, the stopper 16 abuts on the hinge base 21b to stop the rotation of the integrated holder 10 and open / close the display 1. Stop the operation.

The integrated hinge base 20 is composed of left and right hinge bases 21a and 21b and a hinge base connecting portion 22 that connects the left and right hinge bases 21a and 21b. The hinge base connecting portion 22 also serves as a member for attaching the hinge device 100 including the display 1 to the display device main body, and four screw holes 26 are formed. Screws are fastened to these screw holes 26 to fix the hinge device 100 and the display device main body. The screw holes 26 and the screws form the mounting member. In addition, you may fix using a mounting member (for example, a nail, an adhesive) other than a screw. Further, the distance between the hinge bases 21a and 21b of the integrated hinge base 20, that is, the length of the hinge base connecting portion 22 may be determined according to the distance between the holders 11a and 11b of the integrated holder 10.

A rotation shaft portion 23a serving as a rotation center axis is formed on the left hinge base 21a, and a convex portion for fixing the opening / closing angle of the click washer 30a is formed on the circumference centered on the rotation center axis (not shown). An opening / closing guide groove 24a and two opening / closing angle fixing recesses 25a that engage with the opening / closing guide groove 24a are formed. The rotating shaft portion 23a projects the hinge base 21a by burring (processing to make a hole and raise the periphery thereof). The right hinge base 21b has the same configuration as the left hinge base 21a. However, the rotation shaft portions 23a and 23b, the opening / closing guide grooves 24a and 24b, and the opening / closing angle fixing recesses 25a and 25b are formed on the surfaces of the hinge bases 21a and 21b on one direction side (arrow A in FIG. 3), respectively.

The left and right click washers 30a and 30b are elastic members, respectively. The left click washer 30a has a rotating shaft hole 31a for inserting the rotating shaft portion 23a protruding from the hinge base 21a, and has three positioning convex portions 32a that engage with the positioning concave portion 15a of the holder 11a. It is formed in places. Further, an opening / closing angle fixing convex portion (not shown) for sliding while being fitted in the opening / closing guide groove 24a of the hinge base 21a and engaging with the opening / closing angle fixing recess 25a to maintain the posture of the display 1 is provided. It is formed. The right click washer 30b has the same configuration as the left click washer 30a.

The opening / closing angle fixing protrusions of the click washers 30a and 30b may be concave, and the opening / closing guide grooves 24a and 24b of the hinge bases 21a and 21b and the opening / closing angle fixing recesses 25a and 25b may be convex. Further, the positioning convex portions 32a and 32b of the click washers 30a and 30b may be formed into a concave shape, and the positioning concave portions 15a and 15b of the holders 11a and 11b may be formed into a convex shape.

Next, a method of assembling the hinge device 100 will be described. The positioning protrusions 32a and 32b of the click washers 30a and 30b and the positioning recesses 15a and 15b of the integrated holder 10 are engaged and integrated so that the integrated holder 10 and the click washers 30a and 30b rotate in synchronization. .. Then, the rotating shaft holes 14a and 14b of the integrated holder 10 integrated with the click washers 30a and 30b are inserted into the rotating shaft portions 23a and 23b of the hinge bases 21a and 21b from one direction side (arrow A in FIG. 3). , The tips of the rotating shafts 23a and 23b are crimped and fixed. At this time, the amount of caulking is adjusted to provide a clearance for the integrated hinge base 20 to rotate.

Next, the operation of the hinge device 100 will be described. When the display 1 is pushed in the direction from the closed state shown in FIG. 4 (a) to the open state shown in FIG. 4 (b) (arrow B in FIG. 4 (a)), the rotating shaft portions 23a and 23b are centered on the display 1. The integrated holder 10 and the click washers 30a and 30b rotate in synchronization with each other. During rotation, the convex portions for fixing the opening / closing angles of the click washers 30a and 30b slide while being fitted into the opening / closing guide grooves 24a and 24b. When the display 1 is further pushed and each of the opening / closing angle fixing protrusions is fitted into the opening / closing angle fixing recesses 25a and 25b, the display 1 is held at the opening / closing angle position by the engagement. In the illustrated example, the opening / closing angle fixing recesses 25a and 25b are formed at two locations each, but the present invention is not limited to the two locations and may be formed at any number of locations.

When the display 1 is opened to the opening / closing angle position shown in FIG. 4B, the stopper 16 of the integrated holder 10 comes into contact with the edge of the hinge base 21b to stop the rotation of the integrated holder 10. Further, the opening / closing angle fixing recesses 25a and 25b of the integrated hinge base 20 and the opening / closing angle fixing protrusions of the click washers 30a and 30b are engaged with each other to hold the display 1 at this opening / closing angle position. The stopper 16 stops the rotation of the integrated holder 10 in the opening direction to stop the opening operation of the display 1, and also stops the rotation of the integrated holder 10 in the closing direction to stop the closing operation of the display 1. When the display 1 is pushed further from the closed state shown in FIG. 4A in the closing direction (opposite direction of the arrow B in FIG. 4A), the stopper 16 comes into contact with the edge of the hinge base 21b and the integrated holder 10 Stop the rotation of.

Here, the holder 11a, the hinge base 21a, and the click washer 30a are collectively referred to as a left hinge portion, and the holder 11b, the hinge base 21b, and the click washer 30b are collectively referred to as a right hinge portion. In the hinge device 100, since the left hinge portion and the right hinge portion are integrally formed by being connected via the holder connecting portion 12 and the hinge base connecting portion 22, the distance between the holders 11a and 11b and the hinge base 21a when assembled are formed. The dimensional accuracy of the interval of 21b can be improved. Further, since the integrated hinge base 20 is manufactured so that the distance between the hinge bases 21a and 21b is adjusted to the distance between the holders 11a and 11b, the positional deviation of the left and right hinge portions can be suppressed when the hinge base 20 is attached to the display 1.

Further, when the hinge device 100 is fixed to the display device main body, the hinge device 100 is fixed inside the outer shape of the display 1 by providing a screw hole 26 in the hinge base connecting portion 22 inside the hinge bases 21a and 21b. It can be fixed and space can be saved. Further, since the dimensional accuracy of the integrated holder 10 and the integrated hinge base 20 is high and the positional deviation of the left and right hinge portions can be suppressed when the display device is attached, the opening / closing angles of the click washers 30a and 30b are fixed when the display 1 is opened / closed. The timing at which the convex portion engages with the opening / closing angle fixing recesses 25a and 25b of the integrated hinge base 20 is less likely to shift at the left and right hinge portions, and the left / right opening / closing angle position shift of the display 1 can be prevented.

From the above, according to the first embodiment, the left hinge portion has a rotation shaft portion 23a which is a rotation center axis and is attached to the display device main body, and a rotation shaft hole through which the rotation shaft portion 23a is inserted. A hinge base 21b having a 14a and being attached to the display 1 and rotating integrally, and a right hinge portion also having a rotation shaft portion 23b serving as a rotation center axis and being attached to the display device main body. It has a rotating shaft hole 14b through which the rotating shaft portion 23b is inserted, and is provided with a holder 11b that is attached to the display 1 and rotates integrally. 21b is configured to be connected via the hinge base connecting portion 22. Therefore, the variation of the left and right hinge portions when manufacturing the hinge device 100 and when attaching to the display device is suppressed, and the rotational position deviation of the left and right hinge portions, particularly the opening / closing angle fixing recesses 25a and 25b of the integrated hinge base 20 is formed. It is possible to prevent the click washers 30a and 30b from being disengaged from each other with the protrusions for fixing the opening / closing angle.

Further, according to the first embodiment, the rotating shaft portions 23a and 23b are projected by burring the hinge bases 21a and 21b. Therefore, the rotating shaft portions 23a and 23b can be integrally formed with the hinge bases 21a and 21b, and the processing of the rotating shaft portions 23a and 23b can be simplified. Therefore, the cost can be reduced.

Further, according to the first embodiment, in the left and right hinge portions, both holders 11a and 11b are connected via the holder connecting portion 12, and both rotating shaft portions 23a and 23b are connected to both hinge bases 21a and 21b in one direction. Both holders 11a and 11b are respectively projected from the surface, and both holders 11a and 11b are assembled to both rotation shaft portions 23a and 23b from the one-way side. Therefore, the assembly can be performed from one direction side, and the assembling property is improved.

Further, according to the first embodiment, the integrated holder 10 is configured to have a stopper 16 that abuts on the integrated hinge base 20 to stop the opening and closing of the display 1 when the integrated holder 10 rotates to a predetermined rotation angle position. did. Therefore, the integrated holder 10 itself can prevent the display 1 from opening too much.

Further, according to the first embodiment, a screw hole 26 is formed inside between the hinge bases 21a and 21b, and the hinge base connecting portion 22 is screwed to the display device main body. Therefore, it can be screwed inside the outer shape of the display 1, and space can be saved.

In the first embodiment, the display device is shown as an example of the opening / closing device to which the hinge device is applied, but the present invention is not limited to this, and the opening / closing body or the rotating body that supports the opening / closing or rotating at two places on the left and right. Needless to say, it can be applied to the body.

Further, in the first embodiment, the hinge bases 21a and 21b are burring processed to project the rotating shaft portions 23a and 23b, respectively, but the present invention is not limited to this, and the modifications shown in FIGS. 5 and 6 are not limited thereto. As in the example, the holders 11a and 11b may be burred so that the rotating shaft portions 23a and 23b are projected, respectively. In the case of this configuration, rotating shaft holes 14a and 14b are formed in the hinge bases 21a and 21b, respectively.