Scale with weighing place

The invention relates to a scale with a weighing room, the part from is limited to a fixed part of the balance and of at least one Side wall, a front wall and a cover wall, of which at least one of Walls for opening and closing of the weighing chamber by means of a Guide device is movable.

Such scales are known for example from EP-A-0234008. It is it is on all sides to a balance with a pan and a weighing pan enclosing the weighing chamber, according to a fixed front glass, each side of a rear sliding door, a sliding back top connecting a cover and the sliding doors to the upper cover Holder, whereby the holder during opening and closing of the side walls and / or of the cover by means of bearing with these moves and thus access weighing chamber can fully share without hindering ridges on the sides. Also the two side walls can be used individually or synchronously together, with or be moved without the covering. The displacement can be carried out by motor or by hand, in which case the manual mode to move disks from the drive be decoupled.

In EP-A-0574668, a scale is disclosed having an upper cover wall of Wind protective housing which by means of a manually operable locking attachable or detachable. After removal of the cover, it is possible both the front wall and the side walls for the purpose of cleaning to completely remove from the housing. In this known design is the Cover wall portion of the windshield housing cohesive framework that However, the underlying walls a certain web freedom, and thus a better view of the interior of the wind shield case, is supplied, however, for some applications are not yet completely satisfactory. For one thing, it is not possible to dispense with the upper frame, the other caused this Execution a certain manipulation of the bars, the high precision must be made to align with the recesses receiving them.

The invention is based on the object, an easy-to-use scales propose and to provide a way of cleaning, the small one requires effort, in particular the work is on the set the scales is, can be cleaned easily and completely.

This object according to the invention is achieved with the features of claim 1.

A scale with a weighing room, the part from a stationary part of the Libra is limited as well, and at least one side wall, a front wall a shroud which at least one of the walls for opening and closing of the weighing chamber by means of a guide device is movable, has a the Raising the level of its base and / or the wearing of the balance serving Handle on.

Such a handle is the improved handling of the balance. It can therefore For example, the scales are lifted with one hand and including lying table surface with the other hand to be cleaned.

Preferably, the handle on the stationary part of the balance is appropriate and is in a preferred embodiment, at the top of the balance, in particular close to the cover wall, respectively.

In an advantageous embodiment, the handle for lifting the balance with a Hand constructed or placed on the scale.

In a particular inventive manner, the guide device for the movable cover wall, at least partially integrated into the handle. Especially is used to handle as a rail for a guide element for displacing the Cover wall.

The guiding device has in an advantageous embodiment of a vertical Base body, wherein the upper and lower region in each case at least one Rack is arranged with at least one gear and a advantageous be guided laterally sliding or means of guide rollers vertical base can. To the guide means of the cover to make as short as possible, a vertical construction was chosen. In this case, the guide element is laterally canting or sliding means of guide rollers in the guide device out.

In a particularly advantageous development of the scale is a holder of Top cover panel is integrated in the guiding device, which the covering wall by means of a by a simple, on the covering wall and / or the mount acting actuator locked and keeps unlockable positive lock or releases.

For a further advantageous embodiment of the inventive scale is on Handle a clutch lever for the coupling and uncoupling of the cover and of serving one of the movement of the at least one movable walls motor drive are disposed.

Further details of the invention will become apparent from the ensuing Description of schematically illustrated in the drawings Embodiments. Show it:<sl><li>FIG. 1 an inventive scale in perspective from the front,</li><li>FIG. 2, the balance in perspective according to arrow II of FIG. 1, However, with the housing,</li><li>FIG. 3 is a sectional view of the guide and the drive of the shroud,</li><li>Fig. 4 is a side view of the drive for the covering.</li></sl>

A weighing machine 1 according to figure 1 consists of a, the rear wall 9 and the bottom 8 the weighing chamber 4 forming the fixed part, which is composed of a part of the Weighing containing bottom chamber 2 and a substantially Drive mechanism containing housing 3 is composed, and the weighing chamber. 4 The weighing chamber 4 will continue serving as windbreak, from the side walls 5, 6 the front wall 7 and the cover panel 12 included. The base 8 includes a Implementation for the support of the weighing pan 10. However, the weighing pan on an L-shaped carrier which at one of the rear wall of the weighing compartment protruding coupling assembly is mounted, rest, as in EP 1195586 A1 is described. Likewise, the different in the cited document described embodiments of the weighing pan and / or characteristics of the WeighAhead also applicable to the scale described here.

The scale 1 is preferably three feet 22nd

The side walls 5, 6, the front wall 7 and the cover panel 12 consist of transparent material, preferably glass. An embodiment of hardened Glass is also possible, especially for applications in which it applies that To increase security in terms of dealing in a harsh environment or the Handling, for example to improve by cleaning in a machine.

The side walls 5, 6 and the cover panel 12 are connected by means of a drive, For example, a cable drive, to open and close the weighing compartment movable. The side walls 5, 6 and the cover panel 12 are each detachably mountable to a Guide device 17, 120 with the aid of the guide means 17, 120 integrated brackets attached. The front wall 7 is also detachably, on a Bracket 19 attached.

By a slight pivoting movement of the side walls 5, 6, the front wall 7 are and the cover panel 12 in a simple manner for cleaning from their holders to remove.

In its open position, the side walls 5, 6 and the covering enclose 12 the housing 3. This is possible because the housing 3 in its width and its height is made smaller than the weighing room. 4

The guiding devices 17, 120 of the side walls 5, 6, and the cover panel 12 are provided with coupling elements (in Figure 1 not visible) which the compound of the side walls 5, 6 and the cover panel 12 with the cables of a drive serve. Each side wall 5, 6 is separately provided with a clutch actuator 18, Similarly, the cover panel 12 (in Figure 1 not visible, see Figures 2 and 4). On Thus, all possible combinations: individually, in part or all together the closing and opening of the side walls 5, 6 and the cover wall 12 possible.

At the upper end of the housing 3, the weighing machine 1 has a handle 13. In addition to the Carrying function has the handle 13 has the function of a guide rail for opening and closing of the cover 12. About this track is a guide member 14 the guide device out 120, the holder 15 of the cover panel 12 with is the guiding element 14. As described above, the Bracket 15 is formed for the cover panel 12 such that the cover panel 12 , Separated by a simple pivoting movement, for example for cleaning can be.

At the upper edge of the side walls 5, 6 are for holding them in locking closures (in Figure 1 not shown) inwardly inclined frame strips 11 is provided at the the chamfered upper corners 23, 24 of the front wall 7 and rear wall 9 rest. The angled frame strips 11, other upper end edges of the Side walls 5, 6, but possibly also the cover panel 12, such cover, that they form a kind of labyrinth seal for the outer air, so that the ingress of Drafts to the interior of the weighing chamber 4 by using the function of the wind shield addition more difficult. In addition, the frame bars to 11 of transparent be manufactured material.

As already mentioned above, dominates the rear wall 9 of the weighing chamber 4 in both its width and in height, the housing 3. This offers the possibility of recesses 20 in the rear wall 9, both laterally as well as above can be arranged. These recesses 20 are interchangeable with clips 21 provided for closing the recesses 20th For example, one or multiple clips be 21 removed from one or more recesses 20 to any supplies, for example, electrical leads and / or Hoses for liquid to be weighed additions, pass therethrough. This can within the weighing chamber experiments, observing the Weight change be carried out without an additional opening of the Weighing compartment 4, which could cause incorrect measurements. are of course Such recesses 20 also on the side walls 5 or 6, the front wall 7 and / or the cover panel 12 also conceivable.

2 shows the balance 1 from the direction of the arrow II of Figure 1, however, 4. after partial removal of the housing 3 and weighing chamber is closed the Side walls 5, 6 and the cover panel 12 are individually or jointly by Manually or by motor, preferably by means of a single motor 28 slidable, so that the weighing chamber 4 is opened at an arbitrary position or can be closed. In particular, in Figure 2, the drive for the Shifting the walls 5, 6, 12 shown, which is located on the three levels 25, 26, 27 and another layer 36 extends. In this example, there is a Cable drive, wherein a non-visible here upper rope pulley at the level of 26 Operation of the cover panel 12 and a likewise not visible here low pulley is used at the level 36 of the actuation of the side walls 5, 6th

Furthermore, the mechanism of the cover panel 12 is shown in FIG. 2 Of the Handle 13 also serves as a rail for the guide element 14 for the holder 15 the cover panel 12, which is guided along the handle. 13 The handle 13 is a Bar 34 is connected to the plane 26th Between the strip 34 and the back of the Rear wall 9, two retaining strips 32 for the remote in Figure 10 housing 3 arranged. Below this holding strips 32, a lower portion 33 of the Guide member 14 is provided, which on a narrow web 41 with the Bracket 15 is connected to the shroud 12th (The constructive Context shows the Figure 3).

By the reference numeral 16, the lever for actuating the clutch for the Cover panel 12, respectively. Thus it is possible the drive connection of the Cover panel 12 of the upper cable 38 (see Figure 4) to separate or again produce.

In the sectional drawing of Figure 3, the guide device is not 120 in Figure 3 Cover panel 12 illustrated described. On a base of 78 Guide 14 webs 79 are attached, in which in the drawing, attached interrupted illustrated plates 77 by means of screws 80, the in turn in the upper area with the bracket 15 not shown for the associated shroud 12th In the upper part of the base body 78 of the Handle 13 surrounded. Inside the handle 13 is on the left side of the center line of an upper Racks 73 are provided along which an upper gear 73a is guided. A similar construction is provided in the lower portion 33 of the guide member 14 with the lower rack 74 and the lower gear 74a. The gears 73a and 74a are connected via a vertically arranged shaft 66th To a side avoid game, are both the top and bottom guide rollers 75 and 76, each consisting of a double roll system, arranged so that the Guide member 14 is straight and without tilting along the handle 13 be moved constantly. The vertical force is supported via a sliding member 124th but this can also via one or more roles to happen. The lower section 33 of the Guide element 14 is connected on its underside to the upper cable 38th About the cable 38 is driving the base 78 along the Racks 73 and 74 moves.

By the reference numeral 32, the retaining strips for the housing 3, respectively. The Retaining strips 32 form a slot 81, in which the web 41 of the base 78 moved (see figure 2). The slot 81 may additionally with folding blades Sealing lips or brushes against the ingress of dust etc. into the interior of be sealed casing. 3

4 shows a side view of the drive for the cover panel 12, according Figures 2 and 3. The drive region, the planes 25 and 26 in accordance with the figure 2, but without showing the engine 28. At the rear end of the Handle 13 is located between the clutch lever 16, the range from a Gears 29, 82 located coupling 118 (not shown in detail) in order alternatively, the cover panel 12 on or disengage from it by the engine 28th Of the Motor 28 may either be a motor or it is a drehrichtungsumkehrbarer Transmission is provided for changing the direction of rotation. In the latter case, this transmission either be switched manually or by endschalterähnlichen operating members to each achieve a defining end position performs a switchover. With 30 is a toothed belt wheel designates which gets its drive from the motor 28 and the gears 89 and 82 transfers.

It can be seen how the plane 26 on long columns 83 and the plane 25 in turn rests on the fixed plane 26 short columns 84th The lower schematically illustrated rack 74 may be at the level 26 by means of columns 85 (only one is see) be supported. For the rest, form the lower rack 74, the grip 13 contained upper rack 73 (see Figure 3) and the bar 34 with the Rear wall 9 a kind of rigid frame which carries the shroud 12 without jamming. The cover panel 12 is connected via the bracket 15 for the cover panel 12, the turn on the plates 77 of the guide member 14 on the non-visible Base body 78 are attached, as described at FIG. 2 The lower Portion 33 of the guide member 14 is guided along the lower rack 74, on the underside of a pin-like connecting element 86 projects. At this Connecting member 86 is an upper rope pulley mounted 38 around the pulleys as formed gear wheels 29, 87 and 88 made, ie, it is to the as Sheave serving cable wheel 29 around in a known manner. The cable pulley 29 may for example be mounted on balls 90th

From Figure 2 is the engine 28 driven via a toothed belt wheel 30 seen that according to Figure 4 with the gear 89 on the shaft 35 connected is. The shaft 35 is designed such that it for assembly and disassembly can be easily inserted from above. The gear 89 meshes with a in vertically adjustable in height, mentioned already with reference to FIG 2 Gear 82 which is fixed to a shaft 91st The gear 82 serves to couple, depending on its altitude with the cable wheel 29 or by him to be uncoupled. The coupling can in a conventional manner and any be formed, but is preferably via a coupling device as serving ramp structure 92 carried by a detent spring.

To now optionally the cable wheel 29 to disengage from the motor drive 28 and 82 and so the cover panel 12 to move by hand or with a Shift around the side walls 5, 6 are not always the cover panel 12 mitzuverschieben, the already mentioned with reference to FIG 2 clutch lever 16 is to Operation of Abdeckwandkupplung 118 provided. The clutch lever 16 is provided with an eccentric cam 93 connected to the to the lever 16 about a lever axis 94 the bar 34 is pivotable. In the bar 34 a plunger 95 is up and down guided. This plunger 95 is below the pressure of a about an axis 96 pivotable two-armed rocker arm 97 on the eccentric cam 93 at.

The other end of the rocker arm 97 supports the shaft 91 on which the gear wheel 82 is attached. located on the upper side of this shaft 91 a fixed to the plane 25 Spring on 98th Thus, the spring 98 urges the shaft 91 downwardly on the rocker arm 97th The turn thereby experiences a torque in the opposite sense of the watch to the Axis 96 and thus pushes the plunger 95. Therefore, when the clutch lever 16 in pivoted counter sense of the watch, so presses the eccentric cam 93 the tappet 95 against the pressure of the spring 98 downward. It swings the two-armed Rocker arm 97 slightly clockwise and therefore lifts at its other end the Shaft 91 together with the gear 82 high, so that the coupling between this gear 82 and the cable wheel 29 solved. The gear wheel 82 remains in this movement of course still in engagement with the gear 89 for driving the upper cable line 38. The operation described herein may the coupling device by hand also of course are automatically, for example by means of a the electromagnetic actuator.