Low-voltage power distribution cabinet drawer moving connection plug structure

Abstract

The utility model relates to low -voltage electrical parts technical field, concretely relates to a low -voltage distribution cabinet drawer mobile wiring plug structure, including the casing, be equipped with three with static insert piece cooperation and realize the power conduction movable insert piece in the casing, movable insert piece includes the plug -in connector casing, T type copper row and two L type plug -in connectors, two L type plug -in connectors mirror image symmetry installs in the plug -in connector casing, and the middle part of plug -in connector is connected with plug -in connector casing rotation, and the front end of plug -in connector is provided with the plug -in groove, and the middle part of plug -in groove is provided with the long and narrow groove that communicates with plug -in groove, the plug -in connector is equipped with the snap spring spare on, and T type copper row is located between two plug -in connectors, the utility model discloses through the plug -in connector and plug -in connector casing through the bolt rotation connection, can realize the small amplitude angle swing, in the drawer advance or pull -out process, and plug -in connector can through the rotation of self -adaptation adjustment and butt -joint angle, avoid the jamming phenomenon, reduce the risk of component damage, guarantee the stability of circuit on -off.

Description

Technical Field

[0001] This utility model relates to the field of low-voltage electrical components technology, specifically to a structure for a movable wiring plug in a low-voltage distribution cabinet drawer. Background Technology

[0002] Low-voltage switchgear is suitable for power plants, petroleum, chemical, metallurgical, textile, high-rise building and other industries for power transmission, distribution and energy conversion. The main circuit connectors in drawer-type low-voltage switchgear are generally divided into moving connectors and stationary connectors. The moving connectors are driven by the drawer to move, thus enabling the switching of the moving and stationary connectors. The moving connectors, as movable wiring plugs, are key components for connecting or disconnecting the drawer unit from the main circuit, directly affecting the operational reliability and safety of the switchgear.

[0003] The existing moving plug conductive sheet is fastened parallel to the length of the outer casing. With limited internal space in the drawer, the installation, disassembly, or maintenance of the copper busbar is severely hampered by the drawer sidewalls and other internal components, greatly compressing the operating space. For example, Chinese patent application CN202220019426.1, which describes a primary plug for a low-voltage drawer-type switchgear, integrates the conductive copper busbar and connector into a single conductive sheet. While this solves the aforementioned problem, the conductive sheet remains fixed within the casing, preventing any angular movement. This design easily leads to eccentric jamming during actual use. During drawer advancement, installation errors and wear from prolonged use can cause misalignment between the connector and the mating component, resulting in eccentricity. In mild cases, this makes pushing and pulling the drawer difficult, increasing operational effort; in severe cases, it can directly cause jamming between the connector and the mating component, preventing normal circuit connection or disconnection and potentially damaging the connector, mating component, or even the drawer structure. Utility Model Content

[0004] This utility model addresses the shortcomings of existing technologies by providing a movable wiring plug structure for a low-voltage distribution cabinet drawer, thereby solving the technical problems mentioned in the background section.

[0005] To achieve the above technical objectives, this utility model proposes the following technical solution: a low-voltage distribution cabinet drawer movable wiring plug structure, including a housing, wherein the housing is provided with three movable plugs that cooperate with the static plugs to achieve power conduction, the movable plugs include a plug housing, a T-shaped copper busbar and two L-shaped plugs, the two L-shaped plugs are mirror-symmetrically installed in the plug housing, and the middle part of the plugs is rotatably connected to the plug housing, the front end of the plug is provided with a plug groove, the middle part of the plug groove is provided with a narrow groove communicating with the plug groove, a retaining spring is sleeved on the plug, and the T-shaped copper busbar is located between the two plugs.

[0006] Furthermore, the T-shaped copper busbar includes a contact portion and a connecting portion. The contact portion has an arc-shaped structure and contacts the rear inner wall of the connector. The connecting portion is parallel to the front of the connector and has a fastening hole.

[0007] Furthermore, the connector housing includes a mirror-symmetrical upper housing and a lower housing. Both the upper and lower housings have through grooves on their side walls, and a connecting plate is provided above each through groove. The two connecting plates are connected by bolts.

[0008] Furthermore, several heat dissipation holes are provided on both the upper and lower walls of the housing.

[0009] Furthermore, the snap ring includes an upper connecting piece and a lower connecting piece with a U-shaped structure, a connecting piece is provided between the two sides of the upper connecting piece and the lower connecting piece, a snap hole is provided on the connecting piece, and protrusions that are adapted to the snap hole are provided on both sides of the plug.

[0010] Furthermore, the connector and the connector housing are connected by a pin, which includes a pin, with baffles fixed at both ends of the pin, and a screw fixed to the baffle at the top of the pin. One end of the screw passes through the connector housing and is fitted with a nut.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model achieves a small-angle swing by rotating the plug and the plug housing through a pin. During the process of pushing or pulling out the drawer, the plug can adaptively adjust the docking angle by rotating itself, avoiding jamming, reducing the risk of component damage, and ensuring the stability of circuit switching. The connecting part of the T-shaped copper busbar is parallel to the front of the plug, and the orientation of its fastening hole is perpendicular to the length direction of the outer shell. When the internal space of the drawer is limited, it can reduce the obstruction of the side wall and internal components to the installation or maintenance operation, facilitate the tightening of screws or disassembly operations, and improve maintenance efficiency. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the structure of the moving plug of this utility model;

[0014] Figure 3 This is a schematic diagram of the structure of the movable plug-in without the connector housing of this utility model;

[0015] Figure 4 This is a structural schematic diagram of the snap ring component of this utility model;

[0016] Figure 5 This is a structural schematic diagram of the pin component of this utility model.

[0017] In the diagram, 1. Housing; 2. Moving insert; 21. Connector housing; 211. Upper housing; 212. Lower housing; 213. Connecting plate; 22. T-shaped copper busbar; 221. Contact part; 222. Connecting part; 223. Fastening hole; 23. Connector; 24. Connecting groove; 25. Narrow slot; 3. Snap ring; 31. Upper connecting piece; 32. Lower connecting piece; 33. Connecting piece; 34. Snap hole; 35. Protrusion; 4. Pin; 41. Pin; 42. Baffle; 43. Screw. Detailed Implementation

[0018] The following are specific embodiments of the present invention, and the technical solution of the present invention will be further described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0019] This utility model provides a low-voltage distribution cabinet drawer movable wiring plug structure, including a housing 1. The housing 1 has three movable plugs 2 that cooperate with the static plugs to achieve power conduction. The movable plug 2 includes a plug housing 21, a T-shaped copper busbar 22, and two L-shaped plugs 23. The two L-shaped plugs 23 are mirror-symmetrically installed in the plug housing 21, and the middle part of the plug 23 is rotatably connected to the plug housing 21. The front end of the plug 23 has a plug groove 24, and the middle part of the plug groove 24 has a narrow groove 25 communicating with the plug groove 24. A retaining spring 3 is sleeved on the plug 23, and the T-shaped copper busbar 22 is located between the two plugs 23.

[0020] like Figure 1-3 As shown, three parallel moving plugs 2 are arranged inside the housing 1. Each moving plug 2 is an independent conductive unit that works with the external stationary plug to achieve circuit switching. Two L-shaped connectors 23 form a U-shaped structure with mirror-symmetrical cross-sections. The two connectors 23 are inside the connector housing 21, with a gap reserved between them and the inner walls on both sides of the connector housing 21. The two connectors 23 are rotatably connected to the upper and lower ends of the connector housing 21, respectively. The two connectors 23 can swing slightly within the connector housing 21. During the process of pushing or pulling out the drawer, if the connectors 23 and the stationary plug are not aligned (eccentric) due to installation errors or component wear, the connectors 23 can adaptively adjust the docking angle by rotating themselves to avoid jamming, reduce the risk of component damage, and ensure the stability of circuit switching. At the same time, after assembling the connectors 23, a certain gap should be reserved between the rear of the connectors 23 and the rear inner wall of the connector housing 21 to provide space for the connectors 23 to rotate.

[0021] The T-shaped copper busbar 22 includes a contact portion 221 and a connecting portion 222. The contact portion 221 has an arc-shaped structure and contacts the rear inner wall of the connector 23. The connecting portion 222 is parallel to the front of the connector 23 and has a fastening hole 223.

[0022] like Figure 3 As shown, the contact part 221 of the arc structure is always in contact with the inner wall of the rear end of the connector 23 before and after adjusting the docking angle. The connecting part 222 of the T-shaped copper busbar 22 is parallel to the front part of the connector 23, and the orientation of its fastening hole 223 is perpendicular to the length direction of the outer shell. In the case of limited space inside the drawer, it can reduce the obstruction of the side wall and internal components to the installation or maintenance operation, facilitate the tightening of screws or disassembly operations, and improve maintenance efficiency.

[0023] The connector housing 21 includes a mirror-symmetrical upper housing 211 and a lower housing 212. Both the upper housing 211 and the lower housing 212 have through grooves on their side walls, and each has a connecting plate 213 above the through groove. The two connecting plates 213 are connected by bolts.

[0024] like Figure 2 As shown, the upper housing 211 and the lower housing 212 are snapped together, and the two through slots symmetrically form a rectangular slot that allows the T-shaped copper busbar 22 contact portion 222 to pass through. The T-shaped copper busbar 22 contact portion 222 is located between the upper housing 211 connecting plate 213 and the lower housing 212 connecting plate 213. After the upper housing 211 and the lower housing 212 are snapped together, the T-shaped copper busbar 22 is fixed on the connector housing 21, and is further fixed between the two connecting plates 213 by bolts. By snapping the upper housing 211 and the lower housing 212 together, it is easy to standardize mass production and rapid assembly, and reduce manufacturing costs.

[0025] The snap ring 3 includes an upper connecting piece 31 and a lower connecting piece 32 with a U-shaped structure. A connecting piece 33 is provided between the two sides of the upper connecting piece 31 and the lower connecting piece 32. A snap hole 34 is provided on the connecting piece 33. Protrusions 35 that are adapted to the snap hole 34 are provided on both sides of the plug connector 23.

[0026] like Figure 4 As shown, the snap ring 3 is an integral design structure. The upper connecting piece 31 and the lower connecting piece 32 are located at the top and bottom of the connector 23, respectively. When the snap ring 3 is assembled with the connector 23, the protrusions 35 at both ends of the connector 23 are respectively inserted into the snap holes 34 on the connecting piece 33, so that the snap ring 3 and the connector 23 are snapped together.

[0027] The connector 23 is connected to the connector housing 21 via a pin 4. The pin 4 includes a pin 41, with baffles 42 fixed at both ends of the pin 41. A screw 43 is fixed to the baffle 42 at the top of the pin 41. One end of the screw 43 passes through the connector housing 21 and is fitted with a nut. The pin 41, baffles 42, and screw 43 are designed as a single unit.

[0028] like Figure 5As shown, the connector 23 has a socket at the position of the narrow slot 25. Two baffles 42 are used to limit the vertical displacement of the connector 23. The inner diameter of the socket is larger than the diameter of the pin 41, so that the connector 23 can be rotatably mounted on the pin 41 and can be tightened under the action of the snap ring 3. The top of the pin 41 is fixed to the connector housing 21 by the screw 43 and the nut to realize the installation of the connector 23. At the same time, the nut is located at the outer end of the connector housing 21 for easy operation.

[0029] When assembling the moving plug 2, first install the retaining spring 3 onto the corresponding plug 23, so that the upper connecting piece 31 and the lower connecting piece 32 fit against the top and bottom of the plug 23 respectively. Then, install the two plugs 23 onto the upper plug housing 211 and the lower plug housing 212 respectively using the screw 43 and nut. Then, snap the connecting part 222 of the T-shaped copper busbar 22 into the through groove of the upper plug housing 211. Then, fasten the upper plug housing 211 and the lower plug housing 212 together, and install the two connecting plates 213 and the connecting part 222 of the T-shaped copper busbar 22 together using bolts. This assembly facilitates standardized mass production and rapid assembly.

[0030] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A structure for a movable wiring plug in a drawer of a low-voltage distribution cabinet, comprising a housing (1), wherein the housing (1) contains three movable plugs (2) that cooperate with static plugs to achieve power conduction, characterized in that: The moving plug (2) includes a plug housing (21), a T-shaped copper busbar (22) and two L-shaped plugs (23). The two L-shaped plugs (23) are mirror-symmetrically installed in the plug housing (21), and the middle part of the plug (23) is rotatably connected to the plug housing (21). The front end of the plug (23) is provided with a plug groove (24), and the middle part of the plug groove (24) is provided with a narrow groove (25) communicating with the plug groove (24). A retaining spring (3) is sleeved on the plug (23), and the T-shaped copper busbar (22) is located between the two plugs (23).

2. The structure of a movable wiring plug for a low-voltage distribution cabinet drawer according to claim 1, characterized in that: The T-shaped copper busbar (22) includes a contact part (221) and a connecting part (222). The contact part (221) has an arc-shaped structure and contacts the rear inner wall of the plug (23). The connecting part (222) is parallel to the front of the plug (23) and has a fastening hole (223) on it.

3. The structure of a movable wiring plug in a low-voltage distribution cabinet drawer according to claim 2, characterized in that: The connector housing (21) includes a mirror-symmetrical upper housing (211) and a lower housing (212). Both the upper housing (211) and the lower housing (212) have through slots on their side walls, and a connecting plate (213) is provided above each through slot. The two connecting plates (213) are connected by bolts.

4. The structure of a movable wiring plug in a low-voltage distribution cabinet drawer according to claim 1, characterized in that: The snap ring (3) includes an upper connecting piece (31) and a lower connecting piece (32) with a U-shaped structure. A connecting piece (33) is provided between the two sides of the upper connecting piece (31) and the lower connecting piece (32). A snap hole (34) is provided on the connecting piece (33). Protrusions (35) that are adapted to the snap hole (34) are provided on both sides of the plug (23).

5. The structure of a movable wiring plug in a low-voltage distribution cabinet drawer according to claim 1, characterized in that: The connector (23) is connected to the connector housing (21) by a pin (4). The upper and lower ends of the pin (41) are fixed with baffles (42). A screw (43) is fixed on the baffle (42) at the top of the pin (41). One end of the screw (43) passes through the connector housing (21) and is fitted with a nut.

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