CN215733117U - Drawer and drawer type low-voltage cabinet - Google Patents

Abstract

The present disclosure relates to a drawer and a drawer type low-voltage cabinet. The drawer (10) is adapted to be drawably mounted to the cabinet body (40) of the drawer-type low-voltage cabinet (100). The drawer (10) comprises: drawer housing comprising a front side wall (11) and a rear side wall opposite to the front side wall (11), between which front side wall (11) a cavity is defined adapted to accommodate a switching device (30), wherein the rear side wall comprises at least a first section (12) and a second section (14) substantially parallel to the front side wall (11), wherein the first section (12) is recessed with respect to the second section (14) in a direction towards the front side wall (11) to form a recess (16), wherein the recess (16) is adapted to arrange a busbar (20) electrically connected to the switching device (30) within the drawer (10). According to the drawer and the busbar arrangement mode, the spatial layout in the drawer type low-voltage cabinet can be optimized, so that the spatial efficiency in the drawer type low-voltage cabinet is improved.

Description

Drawer and drawer type low-voltage cabinet

Technical Field

Embodiments of the present disclosure relate generally to drawer-type low-voltage cabinets, and more particularly, to drawers for drawer-type low-voltage cabinets.

Background

Drawer-type low-voltage cabinets are widely used in power systems for controlling and monitoring the safety of power distribution networks. Drawer-type low-voltage cabinets are generally provided with drawers. A Molded Case Circuit Breaker (MCCB) is typically mounted within the drawer for safe control of the circuit. The conventional drawer housing is provided with a primary plug-in at the back side of the drawer, which is electrically connected to the connection terminal of the MCCB via an upstream connection conductor, so that the MCCB in turn provides power to a downstream load.

However, with conventional drawers, the wiring loop from the upstream connection conductor to the upstream of the circuit breaker inside the drawer is too long, taking up too much space; and the connecting conductors are exposed, so that the occupied space is further increased in order to ensure sufficient electrical clearance and creepage distance. In addition, the connecting conductor is exposed, so that potential safety hazards exist. It is desirable to improve upon conventional drawer designs.

Disclosure of Invention

Embodiments of the present disclosure provide a drawer and a drawer-type low-voltage cabinet, which aim to solve one or more of the above problems and other potential problems.

According to a first aspect of the present disclosure, there is provided a drawer adapted to be drawably mounted to a cabinet of a drawer-type low-voltage cabinet. The drawer includes: drawer housing comprising a front side wall and a rear side wall opposite the front side wall defining a cavity therebetween adapted to accommodate a switching device, wherein the rear side wall comprises at least a first section and a second section substantially parallel to the front side wall, wherein the first section is recessed with respect to the second section in a direction towards the front side wall to form a recess, wherein the recess is adapted to arrange a busbar arrangement electrically connected to a switching device within the drawer.

According to the drawer disclosed by the embodiment of the disclosure, the space layout in the drawer type low-voltage cabinet can be optimized, so that the space efficiency in the drawer type low-voltage cabinet is improved.

In an embodiment according to the present disclosure, the first section may be adapted to carry the switching device. In an embodiment according to the present disclosure, the first section may comprise a fastening portion adapted to secure the switching device to the first section by means of the fastening portion.

In an embodiment according to the present disclosure, the switching device provided in the drawer is connected to the busbar device in a pluggable manner.

In an embodiment according to the present disclosure, the first section may comprise a through hole, wherein a post for electrical connection of the switching device is projectable through the through hole from the first section rearwardly such that: when the drawer and the busbar device are in a preset joint position, the wiring terminal is inserted into a connecting accessory of the busbar device; when the drawer is pulled out from the cabinet body, the wiring terminal is pulled out from the connecting accessory of the busbar device and is electrically disconnected with the busbar device.

In an embodiment according to the present disclosure, the drawer may further comprise a terminal post for electrical connection of the switching device, the first section comprising a through hole through which the terminal post extends to be able to connect with the busbar arrangement in a pluggable manner.

In an embodiment according to the present disclosure, the terminal post may comprise a first end comprising a threaded hole for electrical and mechanical connection with the switching device via a fastener, and a second end connectable in a pluggable manner with the busbar arrangement.

In an embodiment according to the present disclosure, the switching device may include an MCCB.

In an embodiment according to the present disclosure, the drawer may further comprise a transit adapter to which the switching device can be attached and connected to the busbar arrangement via the transit adapter.

In an embodiment according to the present disclosure, the switching device may include at least one of a motor breaker and an MCB (micro circuit breaker).

According to a second aspect of the present disclosure, a drawer type low voltage cabinet is provided. The drawer type low-voltage cabinet includes: a cabinet body; one or more drawers according to any one of the above aspects adapted to be drawably mounted to the cabinet; and a bus bar device mounted to the recess.

In an embodiment according to the present disclosure, the busbar arrangement may be arranged in a vertical direction and include at least two phase busbars to provide power to one or more of the drawers.

In an embodiment according to the present disclosure, each of the at least two bus bars may include a wiring interface electrically connected to a wiring terminal from a switching device within the drawer in a pluggable manner; wherein when the drawer and the busbar device are in a predetermined engagement position, the corresponding wiring interface of the busbar device engages with the corresponding wiring terminal from the switching device in the drawer; when the drawer is pulled out from the cabinet body, the corresponding wiring interface of the busbar device is separated from the corresponding wiring terminal of the switch device in the drawer.

In an embodiment according to the present disclosure, a thickness of the recess in the drawing direction of the drawer may be greater than a thickness of the busbar device in the drawing direction of the drawer.

In embodiments according to the present disclosure, the drawer-type low-voltage cabinet may further include a wiring region disposed at a rear side of the drawer extending across an entire width of the drawer.

Drawings

The above and other objects, features and advantages of the embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. In the drawings, several embodiments of the present disclosure are shown by way of example and not limitation.

Fig. 1 illustrates a perspective view of a drawer-type low-voltage cabinet according to an embodiment of the present disclosure.

Fig. 2 illustrates a side plan view schematic of a drawer-style low-voltage cabinet according to an embodiment of the present disclosure.

FIG. 3 illustrates a top plan schematic view of a drawer according to an embodiment of the present disclosure.

FIG. 4 illustrates a perspective schematic view of a drawer according to an embodiment of the present disclosure.

Fig. 5 shows a schematic view of a busbar arrangement according to an embodiment of the present disclosure.

Like or corresponding reference characters designate like or corresponding parts throughout the several views.

Detailed Description

Preferred embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While the preferred embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

The term "include" and variations thereof as used herein is meant to be inclusive in an open-ended manner, i.e., "including but not limited to". Unless specifically stated otherwise, the term "or" means "and/or". The term "based on" means "based at least in part on". The terms "one example embodiment" and "one embodiment" mean "at least one example embodiment". The term "another embodiment" means "at least one additional embodiment". The terms "upper," "lower," "front," "rear," and the like, refer to placement or positional relationships based on the orientation or positional relationship shown in the drawings, merely for convenience in describing the principles of the disclosure, and do not indicate or imply that the referenced elements must be in a particular orientation, constructed or operated in a particular orientation, and therefore should not be taken as limiting the disclosure.

As previously mentioned, in the conventional drawer-type low-voltage cabinet, the wiring loop from the female connector of the drawer-type low-voltage cabinet to the inlet terminal of the switching device inside the drawer is too long, and occupies too much space inside the drawer-type low-voltage cabinet. In addition, since these connecting conductors are usually bare conductors, the space occupied by the connecting busbars is further increased in order to ensure sufficient electrical clearance and creepage distance. This results in a substantial reduction of the space left in the drawer-type low-voltage cabinet downstream of the switching device for the user to connect to the load. According to the drawer type low-voltage cabinet disclosed by the embodiment of the disclosure, the structure of the drawer is optimized, and the arrangement of the drawer and the connecting busbar is optimized, so that the space utilization efficiency in the drawer type low-voltage cabinet is improved.

It is worth noting that the term "upstream" or "downstream" is used herein with respect to the power supply circuit of the power supply. For the switching device in the drawer, the upstream of the switching device refers to the power supply side of the switching device, namely the incoming line end of the switching device; and downstream of the switching device is the load side of the switching device, i.e., the outlet terminal of the switching device.

The drawer type low voltage cabinet and the drawer structure according to the embodiment of the present disclosure will be described in detail with reference to the accompanying drawings.

Fig. 1 and 2 show schematic views of a drawer-type low-voltage cabinet according to an embodiment of the present disclosure. As shown, the drawer-type low-voltage cabinet 100 may include a cabinet 40 and one or more drawers 10. The cabinet 40 may include a form formed as a frame body, for example. The cabinet 40 may include uprights and cross members extending therebetween. The drawer 10 is slidably disposed on the cross member. A switching device 30 such as a circuit breaker is provided in the drawer 10. It is noted that in the illustrated embodiment, only one drawer 10 is shown for convenience of explanation. The drawer-type low voltage cabinet 100 may include a plurality of drawers 10 for different functional control and monitoring. Since these are well known to those skilled in the art, a detailed description thereof will be omitted.

In operation of the drawer-style low-voltage cabinet, the drawer 10 is fully inserted into the cabinet and mated with the cabinet-side electrical interface via the drawer-side primary plug-in to electrically connect the in-drawer switching device to the power side within the drawer-style low-voltage cabinet and to the load side of the drawer-style low-voltage cabinet, respectively. Specifically, the electrical connections may include, for example, providing power from the busbar of the drawer-type low voltage cabinet 100 to the switching devices within the drawer and providing power output to the circuit downstream (e.g., the switching devices which may include a load side) via the switching devices 30.

In order to realize the power supply from the drawer-type low-voltage cabinet 100 to the drawer 10, the drawer-type low-voltage cabinet 100 may further include a busbar device 20. The busbar arrangement 20 may comprise at least two phase busbars. The busbar can be connected with a main power supply line.

In the illustrated embodiment, as shown in fig. 1 and 2, the busbar arrangement 20 may be arranged in a vertical direction and include a three-phase vertical busbar. The three-phase vertical busbar may be attached at an upstream side thereof to a horizontal busbar via which it may be connected to a power supply of the power system. The three-phase vertical bus bar may then be connected with the switching device 30 within the drawer 10. Thus, power from the power source may be supplied to the switching device 30 of the drawer 10 via the horizontal bus bar, the vertical bus bar. In the case that the power distribution system includes a plurality of drawer-type low-voltage cabinets, the plurality of drawer-type low-voltage cabinets can be simultaneously supplied with power through the horizontal bus bar. On the other hand, one vertical busbar may be used to provide power to a plurality of drawers in one drawer-type low-voltage cabinet 100. Such a layout may reduce busbar consumption and facilitate power connection. It is worth noting that in the illustrated embodiment, the busbar arrangement 20 may comprise a three-phase busbar, which is merely exemplary; in other embodiments, not shown, the busbar arrangement may include a two-phase busbar or a four-phase busbar.

To enable the supply of power from the switching device of the drawer 10 to the downstream side, the drawer 10 may comprise an output side interface. Power from the switching device 30 may be output via the switching device 30 and the drawer-type low voltage cabinet side primary insert. The drawer-type low-voltage cabinet may further include a wiring area located behind the drawer. The output power is further connected to downstream equipment, which may include, for example, various switching devices for controlling the load, through the bus bars in the wiring area.

In order to electrically connect the switching devices in the drawer 10 to the load-side low-voltage cabinet downstream of the drawer 10, a wiring area is usually provided in the low-voltage cabinet. Via the wiring area, may be used to enable interconnection between the interface between the output side of the drawer and the drawer-style low-voltage cabinet and the various drawer-style low-voltage cabinets downstream for controlling the load. In consideration of the number of user-side load devices, a wiring area is usually reserved in the drawer-type low-voltage cabinet. The wiring area must have a large enough space to meet the user's requirements.

In some embodiments, the drawer-type low-voltage cabinet has a depth of 0mm, while the drawer depth may have a depth of about 400 mm. In some embodiments, the drawer depth may be 350-450 mm, and the drawer type low voltage cabinet may have a slightly different size according to the size of the vertical busbar. In the case where the drawer occupies a predetermined space of the drawer type low-voltage cabinet, a space left for a wiring area in the drawer type low-voltage cabinet is small. In some cases, it is also necessary to additionally provide an extended wiring space at the side of the drawer type low-voltage cabinet for providing a wiring area for a user. This inevitably increases the size of the overall power distribution system, which in turn increases the cost to the user. According to the drawer and the busbar arrangement mode, the spatial layout in the drawer type low-voltage cabinet can be optimized, so that the spatial efficiency in the drawer type low-voltage cabinet is improved.

The drawer 10 of the embodiment of the present disclosure is described below with reference to fig. 3 and 4. In some embodiments, as shown in fig. 3-4, the drawer 10 may include a drawer housing. The drawer housing may include a front sidewall 11 and a rear sidewall opposite the front sidewall 11. A cavity suitable for housing the switching device 30 is defined between the front 11 and rear side walls. The front side wall 11 may form an external appearance surface of the drawer, on which an operation and display unit of the switching device may be disposed.

In the illustrated embodiment, the rear sidewall may include a first section 12 and a second section 14 substantially parallel to the front sidewall 11. The first section 12 is recessed relative to the second section 14 in a direction toward the front side wall 11 to form a recess 16. The recess 16 is adapted to arrange a busbar arrangement 20 in electrical connection with a switching device 30 within the drawer 10.

By providing the recess 16 and arranging the busbar device 20 by means of the recess 16, space efficiency within the drawer type low-voltage cabinet can be improved. It is worth mentioning that although in the illustrated embodiment the recess is formed as a square space, such a layout prevents interference collision of the wiring with other components inside the drawer type low voltage cabinet; this is merely exemplary, and the recessed portion may be formed in other suitable shapes. Further, although in the illustrated embodiment, the second section 14 is shown as one. In other embodiments, the second section 14 may include a plurality of second sections. Although the second section 14 is shown as being linear in the illustrated embodiment, the shape of the second section is not limited.

In some embodiments, the thickness of the recess 16 in the direction of withdrawal of the drawer 10 is greater than the thickness of the busbar arrangement in the direction of withdrawal of the drawer 10. Thereby, the bus bar device 20 can be conveniently accommodated in the space of the recess 16. This may further optimize the layout of other components within the drawer-type low-voltage cabinet and the drawer to avoid interference between the components.

In some embodiments, the drawer-type low-voltage cabinet may further include a bracket. The cradle may be arranged to support the busbar arrangement 20. Thereby, the overall structural support of the busbar device 20 can be achieved.

In some embodiments, the entire space behind the drawer 10 within the drawer-style low-voltage cabinet may be used as a wiring area 70 for the user. In some embodiments, the wiring regions 70 may extend across the entire width of the drawer 10. In the case where the wiring region 70 can provide a sufficient wiring space, an expanded space for wiring on the side can be omitted. In other embodiments, a lateral wiring extension space may be provided in addition to the wiring region 70. The wiring extension space may be arranged, for example, alongside the drawer space. This further increases the size of the wiring space for the customer, and this layout is significantly advantageous in the case of a large customer load.

In some embodiments, as shown in fig. 3, the first section 12 is adapted to carry a switching device 30. In some embodiments, the first section 12 comprises a fastening portion adapted to secure the switching device 30 to the first section 12 by means of the fastening portion. The fastening portion may include mounting holes or other suitable fastening means. Thus, the switching device 30 may be secured to the first section 12 by fasteners such as screws.

In some embodiments, the switching device 30 provided in the drawer 10 is connected to the busbar in a pluggable manner. In this case, the interface between the switching device 30 and the bus bar arrangement 20 is essentially formed as a primary plug-in between the drawer 10 and the bus bar arrangement 20. In this way, the connecting conductors for the electrical connection of the switching device in the drawer 10 can be omitted. This may further reduce the space occupied by the drawer. In addition, the circuit connection of the switching devices in the drawer 10 can be simplified, and the workload of installing and post-maintaining the switching devices 30 can be reduced. In addition, the amount of conductors used in the drawer 10 is reduced, reducing the cost of the device.

In some embodiments, as shown in fig. 4, the first section 12 may include a through-hole. A post 50 for electrical connection of the switching device 30 can extend through the through hole protruding rearward from the first section 12. With this structure, the electrical connection of the switching device 30 and the bus bar device 20 can be conveniently achieved. In particular, when the drawer 10 is provided in a drawer-type low-voltage cabinet in a pluggable manner, the terminal 30 of the switching device 30 can be engaged with and disengaged from the wiring attachment in the busbar device 20 while the drawer 10 is being pulled out.

In some embodiments, the terminal 50 is inserted into the connection accessory of the busbar device 20 when the drawer 10 and the busbar device 20 are in the predetermined engagement position. Thereby, the power of the bus bar device 20 may be supplied to the switching device. When the drawer 10 is pulled out from the cabinet 40, the terminal 50 is pulled out from the connection fitting of the busbar device 20 to be electrically disconnected from the busbar device 20. Therefore, the maintenance of the drawer can be conveniently realized.

In some embodiments, the post 50 may include a first end and a second end. The first end of the post 50 includes a threaded bore. The mechanical connection of the terminal 50 to the switching device 30 can thus be achieved by means of a fastener, for example a threaded hole. The second end of the terminal 50 can be connected with the busbar device 20 in a pluggable manner. Thereby, the bus bar device 20 and the switching device 30 are electrically connected in a pluggable manner by the terminal 50.

Fig. 5 shows a schematic view of the busbar device 20 according to an embodiment of the present disclosure, wherein the terminal 50 is inserted into the busbar device 20.

In some embodiments, as shown in fig. 5, the busbar device 20 may include: the three-phase bus bar and a plurality of insulation plates are arranged in parallel with each other. Each phase busbar in the three phase busbar comprises a substantially sheet-like body. The plurality of insulating plates and the busbars in the three-phase busbar are arranged in a stacked manner, so that the busbars in the three-phase busbar are electrically insulated from each other. The busbar device 20 may be attached to a power supply side such as a horizontal busbar on an upper side in the drawing. The bus bar device 20 may include a conductive post (not shown). One end of the conductive column may be mechanically fixed with the corresponding busbar in the busbar device 20. The other end of the conductive post may receive a post 50. One end of the conductive post may include a threaded hole, for example. Thus, the conductive posts may be fastened to the respective busbars using fasteners. In some embodiments, the other end of the conductive post may be formed in the form of a claw. This allows the post 50 to be clamped when inserted into the conductive post. On the other hand, when the post is pulled out from the conductive post, it is easily pulled out.

In some embodiments, the busbar device 20 may include a plurality of protective covers, and the protective cover 22 may be configured to cover a side of the conductive column near the switching device 30. The protective cover 22 may provide insulation protection for the electrical contact portion between the switching device 30 and the post 50 on the one hand; on the other hand, it can play a role of positioning and maintaining the orientation of the post 50.

It should be noted that the busbar device 20 shown in the drawings is merely one embodiment of the busbar device. The bus bar arrangement 20 may take other suitable forms. For example, the busbar means may take the form of an integrally formed housing. The busbar device may include a plurality of cavities configured to receive the busbars, respectively. A detailed description thereof will be omitted in consideration that the structure of the bus bar device 20 is not the focus of the present disclosure.

In some embodiments, the switching device 30 may include an MCCB. The switching device 30 is not limited to the MCCB. In some embodiments, the switching device 30 may include a motor circuit breaker and an MCB.

To this end, in some embodiments, the drawer 10 also includes an adapter. A switching device can be attached to the transit adapter and connected to the busbar arrangement via the transit adapter. In this case, the arrangement of the switching device in the drawer can be realized by means of the adapter, even if the size and format of the switching device are different. The adaptor adapter may be formed in an appropriate configuration.

Further, while operations are depicted in a particular order, this should be understood as requiring that such operations be performed in the particular order shown or in sequential order, or that all illustrated operations be performed, to achieve desirable results. Under certain circumstances, multitasking and parallel processing may be advantageous. Likewise, while several specific implementation details are included in the above discussion, these should not be construed as limitations on the scope of the disclosure. Certain features that are described in the context of separate embodiments can also be implemented in combination in a single implementation. Conversely, various features that are described in the context of a single implementation can also be implemented in multiple implementations separately or in any suitable subcombination.

Although the subject matter has been described in language specific to structural features and/or methodological acts, it is to be understood that the subject matter defined in the appended claims is not necessarily limited to the specific features or acts described above. Rather, the specific features and acts described above are disclosed as example forms of implementing the claims.

Having described embodiments of the present disclosure, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.

Claims (15)

1. A drawer adapted to be drawably mounted to a cabinet body (40) of a drawer-type low-voltage cabinet (100), comprising:

a drawer housing comprising a front side wall (11) and a rear side wall opposite to said front side wall (11), defining between said front side wall (11) and said rear side wall a cavity suitable for housing a switching device (30),

wherein the rear side wall comprises at least a first section (12) and a second section (14) substantially parallel to the front side wall (11), wherein the first section (12) is recessed with respect to the second section (14) in a direction towards the front side wall (11) to form a recess (16), wherein the recess (16) is adapted to arrange a busbar arrangement (20) electrically connected to a switching device (30) within the drawer (10).

2. The drawer according to claim 1, characterized in that the first section (12) is adapted to carry the switching device (30).

3. The drawer according to claim 2, characterized in that the first section (12) comprises a fastening portion adapted to fix the switching device (30) to the first section (12) by means of the fastening portion.

4. Drawer according to claim 1, characterized in that the switching means (30) arranged in the drawer (10) are connected in a pluggable manner to the busbar arrangement (20).

5. The drawer according to claim 4, characterized in that the first section (12) comprises a through hole, wherein a lug (50) for the electrical connection of the switching device (30) can extend through the through hole protruding backwards from the first section (12) such that: when the drawer (10) and the busbar device (20) are in a preset joint position, the wiring terminal (50) is inserted into a connecting accessory of the busbar device (20); when the drawer (10) is pulled out from the cabinet body (40), the binding post (50) is pulled out from the connecting accessory of the busbar device (20) to be electrically disconnected with the busbar device (20).

6. Drawer according to claim 1, characterized in that it further comprises a terminal stud (50) for the electrical connection of said switching device (30), said first section (12) comprising a through hole through which said terminal stud (50) extends to be able to connect in a pluggable manner with said busbar means (20).

7. The drawer according to claim 6, characterized in that the terminal (50) comprises a first end comprising a threaded hole for electrical and mechanical connection with the switching device (30) via a fastener and a second end which is connectable in a pluggable manner with the busbar arrangement (20).

8. The drawer according to any of claims 1 to 7, characterized in that the switching means (30) comprise an MCCB.

9. The drawer according to claim 6 or 7, characterized in that it further comprises a transit adapter to which the switching device (30) can be attached and via which it is connected to the busbar arrangement (20).

10. The drawer according to claim 9, characterized in that the switching means (30) comprise at least one of a motor circuit breaker and an MCB.

11. A drawer-type low-voltage cabinet, comprising:

a cabinet (40);

one or more drawers (10) according to any one of claims 1-10 adapted to be drawably mounted to the cabinet (40); and

a busbar arrangement (20) mounted to the recess (16).

12. A drawer-type low-voltage cabinet according to claim 11, characterized in that said busbar arrangement (20) is arranged in a vertical direction and comprises at least two phase busbars to provide power to one or more of said drawers (10).

13. The drawer-type low-voltage cabinet as claimed in claim 12, wherein each of the at least two busbar phases comprises a wiring interface electrically connected to a wiring terminal from a switching device (30) in the drawer (10) in a pluggable manner;

wherein when the drawer (10) is in a predetermined engagement position with the busbar arrangement (20), the respective wiring interface of the busbar arrangement engages with a respective wiring terminal from a switching device (30) within the drawer (10); when the drawer (10) is pulled out of the cabinet body (40), the corresponding wiring interface of the busbar device is separated from the corresponding wiring terminal of the switch device (30) in the drawer (10).

14. A drawer-type low-voltage cabinet according to claim 12, characterized in that the thickness of the recess (16) in the drawing direction of the drawer (10) is greater than the thickness of the busbar arrangement in the drawing direction of the drawer (10).

15. A drawer low voltage cabinet according to any one of claims 11-14, further comprising a wiring area (70) arranged at the rear side of the drawer (10) extending across the entire width of the drawer (10).

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