CN216085617U - Switching adapter, drawer, fixed functional unit and low-voltage switch cabinet - Google Patents

Abstract

The present disclosure relates to a switching adapter, a drawer, a fixed functional unit and a low-voltage switchgear. A transition adapter for a rear wiring of an MCCB, comprising: a housing (16) including a plurality of through holes; and a plurality of terminals (15), wherein each terminal (15) of the plurality of terminals (15) is adapted to be disposed through the through hole and includes a first end adapted to be electrically and mechanically attached to a busbar (30) and a second end adapted to be electrically and mechanically attached to a rear side of the MCCB (20). According to the adapter for the rear wiring of the MCCB according to the embodiment of the present disclosure, the connection between the adapter and the MCCB can be simplified, and the maintainability of the MCCB can be improved.

Description

Switching adapter, drawer, fixed functional unit and low-voltage switch cabinet

Technical Field

Embodiments of the present disclosure relate generally to MCCB connections and, more particularly, to a transition adapter for MCCB post-wiring.

Background

The wiring of conventional Molded Case Circuit Breakers (MCCBs) inside low-voltage switchgear cabinets is usually required to pass through a connecting conductor. The connecting conductors are usually bare, and in order to ensure a sufficient insulation distance, the connecting conductors are usually long and complicated to wire. Furthermore, the connection conductor needs to avoid the arc discharge path of the MCCB, which further increases the length of the connection conductor and the wiring complexity. It is desirable to improve the conventional wiring manner of the molded case circuit breaker for the low voltage switchgear.

Disclosure of Invention

Embodiments of the present disclosure provide a transition adapter, a drawer, a fixed functional unit, and a low-voltage switchgear, which aim to solve one or more of the above-mentioned problems, and other potential problems.

According to a first aspect of the present disclosure, a transition adapter is provided for back wiring of an MCCB. The switching adapter includes: a housing including a plurality of through holes; and a plurality of posts, wherein each post of the plurality of posts is adapted to be disposed through the through-hole and includes a first end adapted to be electrically and mechanically attached to a busbar and a second end adapted to be electrically and mechanically attached to a rear side of the MCCB.

According to the transit adapter for the rear wiring of the MCCB according to the embodiment of the present disclosure, the connection between the transit adapter and the MCCB can be simplified, and the maintainability of the MCCB can be improved.

In an embodiment according to the present disclosure, the housing further comprises a receiving portion for receiving a blade of the busbar.

In an embodiment according to the present disclosure, the terminal post comprises a first threaded hole at the first end adapted to receive a first fastener to fasten the busbar at the receiving portion and the terminal post together by means of the first fastener.

In an embodiment according to the present disclosure, the housing further comprises a fastening portion configured to fasten the adaptor adapter to a component carrying the adaptor adapter.

In an embodiment according to the present disclosure, the second end includes a second threaded hole adapted to receive a second fastener to fasten the wire terminal of the MCCB with the post via the second fastener.

In an embodiment according to the present disclosure, the second end comprises a pluggable joint.

In an embodiment according to the present disclosure, the pluggable connector comprises a plurality of blades, each of the plurality of blades comprising a longitudinal first end, a longitudinal second end, and an intermediate portion bulging outward between the longitudinal first end and the longitudinal second end, wherein the respective longitudinal first ends of the plurality of blades are enclosed into an opening adapted to pluggably receive a respective phase terminal of the MCCB, wherein the longitudinal first ends and the longitudinal second ends each comprise a spring clip to tightly band the plurality of blades together from each other

According to a second aspect of the present disclosure, a drawer is provided. The drawer includes: a drawer housing adapted to receive the MCCB; and the transit adapter according to the above aspect, wherein the transit adapter is electrically and mechanically connected to the MCCB via the binding post at a rear side of the MCCB, and the transit adapter is electrically and mechanically connected to an upstream busbar of the MCCB at a side opposite to the MCCB.

In an embodiment according to the disclosure, the drawer further comprises a mounting plate extending at least partially substantially parallel to an outer surface of the drawer housing, the adapter being carried via the mounting plate (80).

In an embodiment according to the present disclosure, the drawer further comprises a second transit adapter, wherein the second transit adapter is configured identically to the transit adapter (10), wherein the transit adapter is configured to electrically connect the MCCB and an upstream busbar of the MCCB to each other.

According to a third aspect of the present disclosure, a fixed function unit is provided for a low voltage switchgear. The fixed function unit may include: MCCB; and the transition adapter according to the first aspect, wherein the transition adapter is electrically and mechanically connected with the MCCB via the binding post at a rear side of the MCCB, and the transition adapter is electrically and mechanically connected with an upstream busbar of the MCCB at a side opposite to the MCCB.

According to a fourth aspect of the present disclosure, a low voltage switchgear is provided. The low-voltage switchgear cabinet includes: a cabinet body; one or more drawers of the second aspect; and/or one or more fixed functional units according to the third aspect.

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 top perspective view of a first perspective of a drawer according to an embodiment of the present disclosure.

Fig. 2 illustrates a top perspective view of a drawer according to an embodiment of the present disclosure.

Fig. 3 illustrates a top perspective view of a second perspective of a drawer according to an embodiment of the present disclosure.

Fig. 4 shows a first perspective structural view of a transition adapter according to an embodiment of the disclosure.

Fig. 5 shows a second perspective structural schematic of a transition adapter according to an embodiment of the disclosure.

Fig. 6 shows a schematic structural view of a stud according to an embodiment of the present disclosure.

Fig. 7 shows a first perspective structural view of a transition adapter according to another embodiment of the present disclosure.

Fig. 8 shows a second perspective structural view of a transition adapter according to another embodiment of the present disclosure.

Fig. 9 shows a schematic structural view of a stud according to another 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 mentioned above, the connection of the MCCB inside the low-voltage switchgear cabinet is usually required via exposed connecting conductors. This results in the connecting conductors being generally long and complicated to wire. According to an embodiment of the present disclosure, a transition adapter for back wiring of an MCCB is provided. Through the adapter, the MCCB can be quickly connected and installed, the maintenance level of the MCCB is provided, the design of a connecting bus bar (or a connecting conductor) is optimized, and more compact and optimized installation is realized. It should be noted that, although the embodiment of the present disclosure takes a low-voltage switch cabinet as an example to illustrate an application manner of the adaptor adapter according to the embodiment of the present disclosure; the adapter of the embodiment of the disclosure can be applied to other cabinet equipment needing to be provided with the MCCB. Further, although the embodiments of the present disclosure are described with the MCCB as an example of the circuit breaker, the inventive concept of the present disclosure may be applied to other types of circuit breakers.

Furthermore, although the application scenario of the MCCB installation according to the embodiment of the present disclosure is described below by taking a drawer installed in a low voltage switchgear as an example, this is not a limitation, and the MCCB according to the embodiment of the present disclosure may be installed to other fixed function units including the MCCB.

A patch adapter and an exemplary device using the same according to an embodiment of the present disclosure are described in detail below with reference to the accompanying drawings.

Fig. 1-3 show schematic views of different perspectives of a drawer according to embodiments of the present disclosure. As shown, the drawer 100 is retractably mounted to the cabinet of the drawer switch cabinet. The drawer 100 may include a drawer housing 110. Drawer housing 110 defines a cavity adapted to receive a switching device, which can be partitioned into a device region 120 and a wiring region 130, wherein device region 120 is adapted to receive at least MCCB 20. The wiring region 130 may arrange a multi-phase busbar 30, which may be connected to the primary plug-in 40 of the drawer 100 on the upstream side to draw power from the drawer upstream power source. On the other hand, the bus bar 30 may be connected to the MCCB 20 at a downstream side.

In the illustrated embodiment, the device region 120 and the wiring region 130 may be sequentially provided separately along the drawing direction of the drawer. The drawer 100 may include a presentation surface 112 and sidewalls. The side walls are supported, for example, slidably on a frame body of the drawer cabinet. The external appearance surface 112 may be provided with a manipulation and display unit of the switching device.

The drawer 100 may also include a transition adapter 10. The upstream busbar 30 of the MCCB may be electrically and mechanically attached to the transit adapter 10. The terminals of the MCCB 20 may be electrically and mechanically attached to the transition adapter 10. Thereby, the electrical connection between the upstream bus bar 30 of the MCCB and the connection terminal of the MCCB 20 is achieved via the relay adapter 10. Thus, the transition adapter 10 according to the embodiment of the present disclosure can realize the rear wiring of the MCCB 20.

A patch adapter applied to a rear wiring of an MCCB according to the present disclosure brings one or more of the following benefits.

1) The installation is simplified: the upstream connection busbar (which may also be or include the downstream busbar in some embodiments) only needs to be connected to the adapter according to the embodiments of the present disclosure, and the MCCB only needs to be mounted to the adapter.

2) The adapter plays roles of a cable support and an extension terminal of the MCCB, maintainability of the MCCB is improved, for example, how to work the connecting busbar is not needed, and the MCCB can be directly dismounted and remounted.

3) The transition adapter can function as a MCCB quick connect attachment, simplifying the installation of the MCCB. In some embodiments, the MCCB directly spans the adapter, and the connection between the MCCB terminal and the connection busbar and the installation of the MCCB body are completed through the direct screw connection between the MCCB terminal and the adapter. In some embodiments, the MCCB may also be secured to an additionally provided mounting plate with fasteners to further enhance rigidity.

4) The installation is more compact: the adapter does not have the direct length and width dimensions of the MCCB, only increases the depth dimension of the MCCB, and the cabinet body is not sensitive to the depth direction.

5) High safety, and low consumption of conductor such as copper. According to this disclosed embodiment's switching adapter need not wind to the side and go the exposed female row of connecting of overlap joint MCCB terminal, does not have the exposed female row of connecting in MCCB openly moreover. In some embodiments, the adapter can be matched with the MCCB and the front surface of the terminal attaching cover is not provided with a charged body, so that the adapter is safer.

6) The wire connector is more flexible and universal, and can be used in any time needing the wiring after the MCCB.

In some embodiments, the drawer 100 may also include a mounting plate 80 extending at least partially substantially parallel to the exterior surface 112 of the drawer housing 110. The cavity is divided via the mounting plate 80 into a device region located on the proximal side of the drawer 100 and a wiring region located on the distal side of the drawer 100. By providing a mounting plate, the arrangement of components within the drawer may be facilitated. It should be noted that the terms "near side" and "far side" are used herein with respect to the operating state of the drawer, and near side refers to the side close to the appearance surface of the drawer; and the far side refers to the side away from the appearance surface of the drawer. It should be noted that the illustrated mounting plate 80 is merely an exemplary embodiment of a mounting plate and is not limiting. The mounting plate 80 may take any other suitable shape.

In some embodiments, the mounting plate 80 may carry the transition adapter 10. In this case, the adaptor adapter 10 may be conveniently positioned in place on the drawer.

In some embodiments, the wire terminals of the MCCB 20 may be mechanically attached to the transition adapter 10 at the rear side of the MCCB 20. The term "rear side" here refers to the working state of the drawer. Since the MCCB is attached to the transition adapter 10 by the rear side rather than by the lateral side. Not only can conveniently bypass the arc discharge channel of the MCCB; and the wiring distance of the connecting busbar can be greatly reduced. Therefore, the installation of the MCCB 20 and the connecting bus bar in the drawer is more compact. In addition, the connecting bus bar does not need to wind the side face of the MCCB to lap the exposed connecting bus bar of the MCCB terminal, so that the consumption of conductors (such as copper materials) can be saved. In addition, by attaching at the rear side, there is no exposed connecting bus bar at the MCCB side, and therefore, there is no exposed charged body, which may further improve the safety of the drawer.

In some embodiments, as shown in fig. 1-3, the drawer 100 may further include a second adaptor adapter 70. The second adapter 70 is configured identically to the adapter 10.

As previously described, the transit adapter 10 is configured to enable electrical and mechanical connection between the incoming busbar (or upstream busbar) of the MCCB 20 and the incoming terminals of the MCCB 20. The second transition adapter 70 may be configured to enable electrical and mechanical connection between the outlet terminals of the MCCB 20 and the downstream busbar of the drawer 100. In view of the fact that the second transit adapter 70 is similar in structure to the transit adapter 10, detailed description thereof will be omitted. The second adapter 70 can simplify the wiring operation between the downstream bus bar and the outlet terminal of the MCCB.

It should be noted that, in the illustrated embodiment, both the upstream busbar and the downstream busbar of the MCCB 20 adopt a solution of adapter at the interface with the MCCB 20; this is merely exemplary. In other embodiments, an adapter is adopted in each of the upstream busbar and the downstream busbar of the MCCB 20 at the interface with the MCCB 20, and such an embodiment at least partially achieves the above technical effect. Such variations are also encompassed within the spirit of the present disclosure.

A schematic structural diagram of the transition adapter 10 according to an embodiment of the present disclosure is described below with reference to fig. 4 to 6. As shown in fig. 4 and 5, the transition adapter 10 may include a housing 16 and a plurality of through holes passing through the housing 16. In some embodiments, the number of through holes may correspond to the number of phases of the bus bar 30. The shape of the adapter housing 16 is not limited in any way. In some embodiments, the adapter housing 16 is shaped to facilitate mounting to a drawer, for example, a mounting plate.

It should be noted that although the adaptor adapter 10 includes a plurality of through holes in the illustrated embodiment, in this case, the connection between the terminals of the MCCB and the multi-phase busbar may be implemented by using one adaptor adapter 10. In the degradation scheme of the present disclosure, one transit adapter 10 may be replaced by a plurality of transit adapters. In addition, although in the illustrated embodiment, the three-phase bus bar is taken as an example to illustrate the implementation according to the embodiment of the present disclosure, the connection bus bar may also be two-phase or four-phase.

In some embodiments, as shown in fig. 4-6, the transition adapter 10 may also include a plurality of posts 15. The posts 15 are disposed through the through holes. The terminal post 15 may include a first end adapted for electrical and mechanical attachment to the busbar 30 and a second end adapted for electrical and mechanical attachment to the MCCB 20.

In some embodiments, as shown in fig. 4-5, the housing 16 includes a receptacle 12 for receiving a blade of the busbar 30. Only the receiving portion 12 is provided to conveniently position the busbar 30. For example, the receiving portion may be formed in the form of a slot. It is worth mentioning that this is merely exemplary and any other suitable form may be used to implement the receiving portion.

In some embodiments, as shown in fig. 4-5, the post 15 includes a first threaded aperture 154 at the first end adapted to receive a first fastener. Thereby, the busbar 30 at the receiving portion 12 and the terminal 15 may be fastened together by means of a first fastener such as a screw. In this case, through holes may be provided at corresponding positions of the bus bar 30, whereby the bus bar 30 and the terminal 15 may be conveniently and firmly connected.

In some embodiments, as shown in fig. 4-5, the transition adapter 10 may further include a fastening portion 18 configured to fasten the transition adapter 10 to the mounting plate 80. The fastening portion 18 may be embodied in the shape of a lug, for example, and the number of fastening portions 18 may be plural. It should be noted that the shape and number of the fastening portions 18 are not particularly limited.

In some embodiments, as shown in fig. 6, the second end of the post 15 includes a second threaded bore 156 adapted to receive a second fastener. Thereby, the connection terminal of the MCCB 20 and the post 15 can be fastened together by means of a second fastener such as a screw. Thereby, a firm connection between the post 15 and the MCCB 20 can be conveniently achieved by means of the second fastener. In this case, the post 15 may achieve mechanical attachment of the MCCB 20. In some embodiments, additional fasteners may be provided to mechanically secure the MCCB 20 to a corresponding mounting portion of the drawer (e.g., mounting plate 80). This can further improve the mounting strength of the MCCB 20.

A patch adapter 15 and a schematic structural diagram according to another embodiment of the present disclosure are described below with reference to fig. 7 to 9. The embodiment of fig. 7-9 is similar to the embodiment of fig. 4-5, except that the embodiment of fig. 4-5 is adaptable to a fixed MCCB; in the embodiment of fig. 7-9, the MCCB 20 is pluggable, i.e., the MCCB 20 is pluggable with the adaptor 10.

As shown in fig. 7 and 8, similar to the embodiment of fig. 4-6, the post 15 includes a first threaded bore 154 at a first end adapted to receive a first fastener. Thereby, the busbar 30 at the receiving portion 12 and the terminal 15 can be fastened together by the first fastener. In this case, through holes may be provided at corresponding positions of the busbar 30, whereby the busbar 30 can be easily and firmly connected to the terminal 15 by means of the fasteners.

The terminal post 15 may include a pluggable fitting at a second end. In this case, the MCCB 20 may be connected to the transit adapter 10 by a pluggable connector.

Fig. 9 illustrates an exemplary embodiment of a post 15 according to an embodiment of the present disclosure. As shown in fig. 6, the pluggable connector comprises a plurality of blades 151, each blade 151 of the plurality of blades 151 comprising a longitudinal first end 1, a longitudinal second end, and an intermediate portion 159 bulging outward between the longitudinal first end and the longitudinal second end, wherein the respective longitudinal first ends of the plurality of blades are enclosed into openings adapted to pluggably receive respective phase terminals of the MCCB 20, wherein the longitudinal first ends and the longitudinal second ends comprise spring clips 153, 157, respectively, to tightly band the plurality of blades to each other. It is worth noting that this is merely one exemplary embodiment of a pluggable connector for the terminal post 15; the pluggable connector of the terminal 15 may be implemented as other pluggable structures.

In some embodiments, the housing 16 may include a base and a socket, the socket may be mounted to the base and the pluggable header configured as the stud 15 provides structural support and is shaped to receive the header of the MCCB 20. With such a structure, it is possible to provide insulation protection for the electrical contact portion between the MCCB 20 and the post 15 on the one hand; on the other hand, it can play a role of positioning and maintaining the orientation of the post 15. This is achieved in particular by the shape of the base portion matching the shape of the stud 50.

As described above, the transit adapter according to the embodiment of the present disclosure may be applied to a fixed function unit including an MCCB instead of a drawer. The fixed function unit may include: MCCB; and an adaptor adapter electrically and mechanically connected with the MCCB via the binding post at a rear side of the MCCB, the adaptor adapter electrically and mechanically connected with an upstream bus bar of the MCCB at a side opposite to the MCCB. Similar to the application scenario of a drawer, one or more of the above effects can also be achieved at the fixed functional unit.

According to another aspect of the present disclosure, a drawer switch cabinet is also provided. The drawer switch cabinet department includes: a cabinet body; and one or more drawers; and/or one or more fixed function units.

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 (12)

1. An adapter for use in a rear wiring of an MCCB, comprising:

a housing (16) including a plurality of through holes; and

a plurality of posts (15), wherein each post (15) of the plurality of posts (15) is adapted to be disposed through the through-hole and includes a first end adapted to be electrically and mechanically attached to a busbar (30) and a second end adapted to be electrically and mechanically attached to a rear side of the MCCB (20).

2. Transition adapter according to claim 1, characterized in that the housing (16) further comprises a receiving portion (12) for receiving a blade of the busbar (30).

3. Transition adapter according to claim 2, characterized in that the terminal stud (15) comprises a first threaded hole (154) at the first end adapted to receive a first fastener for fastening the busbar (30) at the receiving portion (12) and the terminal stud (15) together by means of the first fastener.

4. The transition adapter according to claim 1, characterized in that the housing (16) further comprises a fastening portion (18) configured to fasten the transition adapter (10) to a component carrying the transition adapter.

5. A transition adapter according to claim 1, characterized in that the second end comprises a second threaded hole (156) adapted to receive a second fastener for fastening the connection terminal of the MCCB (20) with the terminal post (15) by means of the second fastener.

6. The transition adapter of any of claims 1-4, wherein the second end comprises a pluggable fitting.

7. The transition adapter of claim 6, wherein the pluggable connector comprises a plurality of blades, each of the plurality of blades comprising a longitudinal first end, a longitudinal second end, and an intermediate portion that bulges outward between the longitudinal first end and the longitudinal second end, wherein the respective longitudinal first ends of the plurality of blades are enclosed into an opening adapted to pluggably receive a respective phase terminal of the MCCB, wherein the longitudinal first ends and the longitudinal second ends each comprise a spring clip to tightly band the plurality of blades to one another.

8. A drawer, comprising:

a drawer housing (110) adapted to house the MCCB (20); and

a transition adapter (10) according to any of claims 1-7, wherein the transition adapter (10) is electrically and mechanically connected with the MCCB via the binding posts (15) at a rear side of the MCCB, the transition adapter (10) being electrically and mechanically connected with an upstream busbar of the MCCB at a side opposite to the MCCB.

9. The drawer according to claim 8, characterized in that it further comprises a mounting plate (80) extending at least partially substantially parallel to an outer surface (112) of the drawer housing (110), the adapter (10) being carried via the mounting plate (80).

10. The drawer according to claim 8 or 9, further comprising a second transition adapter (70), wherein the second transition adapter (70) is configured identically to the transition adapter (10), wherein the transition adapter (10) is configured to electrically connect the MCCB (20) and an upstream busbar of the MCCB to each other.

11. A fixed functional unit for a low-voltage switchgear cabinet, comprising:

an MCCB (20); and

a transition adapter (10) according to any of claims 1-7, wherein the transition adapter (10) is electrically and mechanically connected with the MCCB via the binding posts (15) at a rear side of the MCCB, the transition adapter (10) being electrically and mechanically connected with an upstream busbar of the MCCB at a side opposite to the MCCB.

12. A low-voltage switchgear cabinet, comprising:

a cabinet body;

one or more drawers (100) according to any one of claims 8 to 10; and/or

One or more fixed function units according to claim 11.

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