Low-voltage switchgear drawer contact

Abstract

The utility model relates to a low -voltage distribution cabinet drawer contact belongs to electrical equipment technical field. A low -voltage distribution cabinet drawer contact of the utility model, including one end connection vertical row, the double copper chuck of another end connection movable contact, the outside of double copper chuck is connected with insulating plate cover. The utility model has the advantages of clever design, convenient use, and the beneficial effects are: ensure that the drawer vertical row avoids the service life shortening due to the drawer plug -in wear and tear, supports the electrified replacement, one contact, and the installation maintenance is convenient, and compared with traditional disposable plug -in, the cost is more economical.

Description

Technical Field

[0001] This utility model relates to a drawer contact of a low-voltage distribution cabinet, belonging to the field of electrical equipment technology. Background Technology

[0002] Low-voltage drawer-type switchgear is widely used as a centralized control device in power distribution centers, serving numerous industries, due to its excellent reliability, simple and safe operation, convenient maintenance, and compact space design. Drawer units are widely used because of their ease of maintenance, especially their support for hot-swapping, which greatly enhances user convenience. However, this design also has shortcomings. Currently, most drawer-type switchgear on the market has primary plugs directly inserted into the vertical busbar. Frequent plugging and unplugging operations can cause wear on the primary plug prongs against the vertical busbar. Over time, this wear may negatively impact the conductivity of the contacts. If the vertical busbar is severely damaged, its replacement process will be extremely cumbersome and requires power-off operation, which may result in significant economic losses for users. Utility Model Content

[0003] The purpose of this utility model is to address the problems existing in the prior art by proposing a low-voltage distribution cabinet drawer contact that reduces the wear and tear on the vertical busbar caused by frequent plugging and unplugging operations.

[0004] To achieve the above objectives, the present invention provides a low-voltage distribution cabinet drawer contact, comprising a double copper clamp with one end connected to a vertical bar and the other end connected to a moving contact, wherein an insulating plate cover is sleeved on the outside of the double copper clamp.

[0005] The double copper clamp consists of a first clamping part at the front end and a second clamping part at the rear end, forming an integral structure. It is fixed by pressure springs provided on the upper and lower surfaces of the second clamping part and locking elements provided on the upper and lower surfaces of the first clamping part located in front of the pressure springs.

[0006] The end of the insulating plate cover is composed of two semi-circular shells that fit the shape of the first clamping part. The end of the insulating plate cover has a slot for connecting the moving contact. The upper and lower parts of the insulating plate cover are respectively provided with buckles and limiting seats for connecting the low-voltage switchgear mounting plate, which do not require bolt fixing.

[0007] In use, this contact is fixed to the mounting plate of the low-voltage cabinet and directly inserted into the vertical row 5 of the drawer. The moving contact of the drawer unit also uses a copper sheet structure 4, which is inserted into the other side of the clamp. This ensures that when the plug is inserted or removed, the wear of the copper busbar is applied to this adapter-side drawer contact, preventing wear on the vertical row of the system drawer due to drawer insertion and removal. This invention is ingeniously conceived and easy to use. Its advantages include: ensuring the vertical row of the drawer avoids shortened service life due to drawer insert wear; supporting live replacement; single-use contact for convenient installation and maintenance; and being more economical than traditional disposable inserts. Attached Figure Description

[0008] The present invention will be further described below with reference to the accompanying drawings.

[0009] Figure 1 This is a structural schematic diagram of one embodiment of the present invention.

[0010] Figure 2 for Figure 1 A schematic diagram of the structure of the double copper clamp.

[0011] Figure 3 for Figure 2 Usage status diagram.

[0012] Figure 4 for Figure 1 A schematic diagram of the structure of the outer cover of the middle insulating board.

[0013] Figure 5 for Figure 1 A schematic diagram of its decomposed structure. Detailed Implementation

[0014] Example The structure of this embodiment is as follows: Figure 1-5As shown, a low-voltage distribution cabinet drawer contact 1 includes a double copper clamp 3 connected at one end to a vertical bar 5 and at the other end to a moving contact copper bar 4. An insulating plate cover 2 is fitted over the double copper clamp 3. The two sides of the double copper clamp 3 are a first clamping part 3-1 and a second clamping part 3-2, which are integral structures and fixed by upper and lower pressing springs 3-3 and a locking device 3-4. The head of the insulating plate cover 2 has semi-circular outer shells 2-2 at the top and bottom, mainly designed to facilitate the insertion of the drawer's moving contact copper bar 4. The top of the head has a slot 2-2-1 for the moving contact copper bar 4 of the drawer to connect with the first clamping part 3-1 of the double copper clamp. The upper and lower parts of the insulating plate cover 2 have buckles 2-1 and limit seats 2-3, respectively. The interior of the insulating plate cover 2 has corresponding slots that cooperate with and fix the double copper clamp 3. In use, contact 1 is first secured to the low-voltage switchgear mounting plate via the clips 2-1 and limit seats 2-3 of the insulating cover 2. After the mounting plate is fixedly connected to the low-voltage switchgear, the first clamping part 3-1 of the double copper clamp is inserted into the copper sheet structure 4 of the moving contact of the drawer unit, and the second clamping part 3-2 of contact 1 is inserted into the vertical row 5 of the drawer. This ensures that when the plug is inserted or removed, the wear of the copper busbar is applied to the drawer contact on this transition side, ensuring that the vertical row of the system drawer will not wear due to the insertion and removal of the drawer. When inserted into the copper busbar, the compression spring 3-3 is pressed tightly to ensure that the clamp is firmly pressed into the copper busbar, ensuring stable current transmission.

[0015] In addition to the embodiments described above, this utility model may have other implementations. All technical solutions formed by equivalent substitution or equivalent transformation fall within the protection scope claimed by this utility model.

Claims

1. A drawer contact for a low-voltage distribution cabinet, characterized in that: The device includes a double copper clamp connected at one end to a vertical bar and at the other end to a moving contact. An insulating plate cover is fitted over the double copper clamp. The double copper clamp is integrally formed by a first clamping part at the front end and a second clamping part at the rear end. A pressure spring is provided on the upper and lower surfaces of the second clamping part. Locking elements are provided on the upper and lower surfaces of the first clamping part, located in front of the pressure spring. The end of the insulating plate cover consists of two semi-circular outer shells that fit the shape of the first clamping part. The end of the insulating plate cover has a slot for connecting the moving contact. The upper and lower parts of the insulating plate cover are respectively provided with a buckle and a limiting seat for connecting to a low-voltage switchgear mounting plate.

2. The low-voltage distribution cabinet drawer contact according to claim 1, characterized in that: The inner surface of the insulating board cover is provided with a slot that cooperates with the locking component for fixation.

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