Moving contact assembly of disconnecting switch

Abstract

The utility model belongs to the field of disconnecting switches, and particularly relates to a moving contact assembly of a disconnecting switch, which comprises a moving contact frame and a moving contact group arranged in the moving contact frame. The movable contact piece group comprises a fixed sleeve arranged in the movable contact frame, and a first elastic piece, a first movable contact piece, a second movable contact piece and a second elastic piece which are sequentially clamped and fixed in a clamping hole of the fixed sleeve, and a contact space for accommodating the static contact is formed between two ends of the first movable contact piece and the second movable contact piece; the fixing sleeve is provided with an open groove communicated with the clamping hole in the length direction. The clamping force of the fixing sleeve enables the first elastic piece and the second elastic piece to apply pressure close to each other to the first movable contact piece and the second movable contact piece respectively. The first elastic piece, the first movable contact piece, the second movable contact piece and the second elastic piece are integrated in the fixing sleeve, so that modular assembly of the movable contact piece group and the movable contact frame can be realized, and the assembly efficiency is higher.

Description

Technical Field

[0001] This utility model belongs to the field of disconnecting switch technology, and specifically relates to a moving contact assembly of a disconnecting switch. Background Technology

[0002] A disconnecting switch is a device that isolates a de-energized section from a energized section, creating a clear disconnect point to isolate faulty equipment or facilitate maintenance during power outages. During electrical equipment maintenance, isolating the equipment from the power source creates a clear disconnect point, preventing safety accidents. A disconnecting switch includes an operating mechanism and a switch body. The switch body includes a housing, a moving contact assembly housed within the housing, a stationary contact that mates with the moving contact, and an arc-extinguishing chamber.

[0003] The existing moving contact assembly of the disconnecting switch includes a first moving contact frame and a second moving contact frame that are snapped together, and a moving contact piece group that is clamped and fixed between the first moving contact frame and the second moving contact frame. The moving contact piece group includes a first spring piece, a first moving contact piece, a second moving contact piece, and a second spring piece that are clamped and fixed between the first moving contact frame and the second moving contact frame in sequence. When assembling the moving contact assembly with this structure, it is impossible to integrate the first spring piece, the first moving contact piece, the second moving contact piece, and the second spring piece into a modular assembly. It is also impossible to achieve modular assembly of the moving contact piece group with the first moving contact frame and the second moving contact frame. The assembly is relatively cumbersome and the assembly efficiency is low. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a switch body for an isolating switch that can effectively avoid parallel wiring within the switch body and improve wiring efficiency.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A moving contact assembly of a disconnecting switch includes a moving contact frame and a moving contact piece group disposed within the moving contact frame. The moving contact piece group includes a fixed sleeve disposed within the moving contact frame, and a first spring piece, a first moving contact piece, a second moving contact piece, and a second spring piece that are sequentially clamped and fixed within a clamping hole of the fixed sleeve. A contact space for accommodating a stationary contact is formed between the two ends of the first moving contact piece and the second moving contact piece. The fixed sleeve is provided with a slot communicating with the clamping hole along its length direction. The clamping force of the fixed sleeve causes the first spring piece and the second spring piece to apply pressure to the first moving contact piece and the second moving contact piece respectively, bringing them closer together.

[0006] In some embodiments, the first movable contact piece and the second movable contact piece are respectively provided with limit blocks at both ends of the clamping holes of the fixed sleeve. The limit blocks abut against both ends of the fixed sleeve and form a limiting fit between the limit blocks and the fixed sleeve.

[0007] In some embodiments, the movable contact frame includes a first movable contact frame and a second movable contact frame that are interlocked with each other. The first movable contact frame is provided with a clamping groove for placing the movable contact piece group. When the second movable contact frame is fastened to the first movable contact frame, the second movable contact frame presses the movable contact piece group into the clamping groove.

[0008] In some embodiments, limiting protrusions are respectively provided at both ends of the clamping groove in the first movable contact frame. The limiting protrusions abut against the limiting blocks of the first movable contact piece and the second movable contact piece, and form a limiting cooperation between the limiting block and the limiting protrusion.

[0009] In some embodiments, the first and second springs have bent support portions extending out of the clamping holes at both ends. The bent support portions of the first and second springs respectively abut against the first and second movable contact frames. The tail of the bent support portions of the first and second springs has an arcuate abutment portion extending out of the first and second movable contact frames. The arcuate abutment portions of the bent support portions of the first and second springs respectively abut against both ends of the first and second movable contact pieces.

[0010] In some embodiments, the second movable contact frame is provided with a plurality of hooks arranged in a rectangular array, and the first movable contact frame is provided with a plurality of hook holes that cooperate with the plurality of hooks, and the plurality of hooks are respectively engaged in the plurality of hook holes.

[0011] In some embodiments, two positioning blocks are symmetrically arranged on the second movable contact frame, and two positioning grooves are provided on the first movable contact frame to cooperate with the two positioning blocks, and the two positioning blocks are respectively engaged in the two positioning grooves.

[0012] In some embodiments, the first movable contact frame is provided with a square transmission hole communicating with the clamping groove.

[0013] In some embodiments, the second moving contact frame is provided with a square transmission protrusion that matches the square transmission hole.

[0014] In some embodiments, two first positioning blocks are symmetrically arranged on the side of the first movable contact piece facing the second movable contact piece, and two second positioning blocks are arranged on the second movable contact piece that abut against the two first positioning blocks.

[0015] The beneficial effects of this utility model are as follows: The first spring, the first moving contact, the second moving contact, and the second spring are integrated within the fixed sleeve, thereby enabling modular assembly of the moving contact assembly and the moving contact frame, resulting in higher assembly efficiency. Furthermore, the first and second moving contact frames are clamped onto the moving contact assembly, and the first and second moving contact frames, along with the fixed sleeve, apply mutual pressure to the first and second moving contact frames through the first and second springs, thereby increasing the contact pressure of the first and second moving contact frames on the stationary contact, which is beneficial for improving the contact reliability of the moving contact assembly. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0017] Figure 1 This is a perspective view of an embodiment of the present utility model;

[0018] Figure 2 This is an exploded view of an embodiment of the present utility model;

[0019] Figure 3 This is a cross-sectional view of an embodiment of the present utility model;

[0020] Figure 4 This is a structural diagram of the internal structure of an embodiment of the present utility model. Detailed Implementation

[0021] To make the technical problem to be solved, the technical solution, and the beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this utility model and are not intended to limit this utility model.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the invention. The terms “comprising” and “having”, and any variations thereof, in the specification, claims, and foregoing description of the drawings are intended to cover non-exclusive inclusion.

[0023] The directional and positional terms used in this utility model, such as up, down, front, back, left, right, inside, outside, top, bottom, side, etc., are only for reference to the accompanying drawings. Therefore, the directional and positional terms used are for the purpose of explaining and understanding this utility model, and not for limiting the scope of protection of this utility model.

[0024] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments:

[0025] like Figures 1-4 As shown, a moving contact assembly of a disconnector includes a moving contact frame 1 and a moving contact piece group 2 disposed within the moving contact frame 1. The moving contact piece group 2 includes a fixed sleeve 21 disposed within the moving contact frame 1, and a first spring piece 22, a first moving contact piece 23, a second moving contact piece 24, and a second spring piece 25 sequentially clamped and fixed within a clamping hole 211 of the fixed sleeve 21. A contact space 200 for accommodating a stationary contact is formed between the two ends of the first moving contact piece 23 and the second moving contact piece 24. The fixed sleeve 21 has a slot 212 along its length that communicates with the clamping hole 211. The clamping force of the fixed sleeve 21 causes the first spring piece 22 and the second spring piece 25 to exert pressure on the first moving contact piece 23 and the second moving contact piece 24 respectively, bringing them closer together.

[0026] like Figures 2-4 As shown, limit blocks 201 are respectively provided at both ends of the clamping holes 211 of the fixed sleeve 21 for the first movable contact piece 23 and the second movable contact piece 24. The limit blocks 201 abut against both ends of the fixed sleeve 21, forming a limiting fit between the limit blocks 201 and the fixed sleeve 21. The first movable contact piece and the second movable contact piece are limited to the fixed sleeve by the limit blocks, thereby ensuring a tighter connection between the first movable contact piece, the second movable contact piece and the fixed sleeve. The movable contact frame 1 includes a first movable contact frame 11 and a second movable contact frame 12 that are interlocked. The first movable contact frame 11 is provided with a clamping groove 111 for placing the movable contact piece group 2. When the second movable contact frame 12 is fastened to the first movable contact frame 12, the second movable contact frame 12 presses the movable contact piece group 2 into the clamping groove 111. The second movable contact frame is connected to the first movable contact frame by a snap-fit ​​connection, which facilitates the assembly of the first and second movable contact frames and the movable contact piece assembly, ensuring a tighter connection between the first and second movable contact frames and the movable contact piece assembly. Limiting protrusions 112 are respectively provided at both ends of the clamping groove 111 within the first movable contact frame 11. The limiting protrusions 112 abut against the limiting blocks 201 of the first movable contact piece 23 and the second movable contact piece 24, forming a limiting engagement between the limiting blocks 201 and the limiting protrusions 112. The limiting protrusions limit the first and second movable contact pieces, thereby preventing the movable contact piece assembly from being connected to the first and second movable contact frames, thus ensuring a tighter connection between the movable contact frames and the first and second movable contact frames.

[0027] like Figure 3As shown, the first spring 22 and the second spring 25 have bent support portions 202 extending out of the clamping hole 211 at both ends. The bent support portions 202 of the first spring 22 and the second spring 25 respectively abut against the first movable contact frame 11 and the second movable contact frame 12. The tail of the bent support portions 202 of the first spring 22 and the second spring 25 has arc-shaped contact portions 203 extending out of the first movable contact frame 11 and the second movable contact frame 12, and the arc-shaped contact portions 203 of the bent support portions 202 of the first spring 22 and the second spring 25 respectively abut against both ends of the first movable contact piece 23 and the second movable contact piece 24. The bent support portions of the first spring and the second spring can increase the pressure of the arc-shaped contact portions on the first movable contact piece and the second movable contact piece, which is beneficial to increasing the contact pressure of the first movable contact piece and the second movable contact piece, and is beneficial to improving the contact reliability of the contact structure.

[0028] like Figure 3 and 4 As shown, the second movable contact 12 is provided with multiple hooks 121 arranged in a rectangular array, and the first movable contact 11 is provided with multiple hook holes 113 that cooperate with the multiple hooks 121. The multiple hooks 121 are respectively engaged in the multiple hook holes 113. The second movable contact is connected to the first movable contact through the hooks, thereby facilitating the assembly of the first and second movable contact and improving assembly efficiency. Two positioning blocks 122 are symmetrically arranged on the second movable contact 12, and the first movable contact 11 is provided with two positioning grooves 114 that cooperate with the two positioning blocks 122. The two positioning blocks 112 are respectively engaged in the two positioning grooves 114. The positioning blocks of the second movable contact play a positioning role for the first movable contact, thereby ensuring a tighter connection between the first and second movable contact.

[0029] like Figure 2 and 3 As shown, the first moving contact 11 is provided with a square transmission hole 115 communicating with the clamping groove 111. The second moving contact 12 is provided with a square transmission protrusion 123 matching the square transmission hole 115. By providing a square transmission hole on the first moving contact and a square transmission protrusion on the second moving contact, it is convenient to splice multiple moving contact assemblies together, thereby meeting the usage requirements of a multi-pole switching unit. Two first positioning blocks 231 are symmetrically arranged on the side of the first moving contact 23 facing the second moving contact 24, and two second positioning blocks 241 are provided on the second moving contact 24 that abut against the two first positioning blocks 231. The first positioning blocks of the first moving contact abut against the second positioning blocks of the second moving contact, thereby ensuring the contact space between the first moving contact and the second moving contact, which is beneficial to improving the contact reliability between the first moving contact, the second moving contact and the stationary contact.

[0030] The first spring, the first moving contact, the second moving contact, and the second spring are integrated within the fixed sleeve, enabling modular assembly of the moving contact assembly and the moving contact frame, resulting in higher assembly efficiency. Furthermore, the first and second moving contact frames are clamped onto the moving contact assembly. The first and second moving contact frames, along with the fixed sleeve, apply mutual pressure to the first and second moving contact frames via the first and second springs, thereby increasing the contact pressure of the first and second moving contact frames on the stationary contact and improving the contact reliability of the moving contact assembly.

[0031] The above description is only one embodiment of the present utility model and is not intended to limit the scope of protection of the present utility model; the scope of protection of the present utility model is defined by the claims in the claims, and all equivalent changes and modifications made in accordance with the utility model are within the scope of protection of the present utility model patent.

Claims

1. A moving contact assembly for a disconnecting switch, characterized in that: The device includes a movable contact frame and a movable contact piece assembly disposed within the movable contact frame. The movable contact piece assembly includes a fixed sleeve disposed within the movable contact frame, and a first spring piece, a first movable contact piece, a second movable contact piece, and a second spring piece that are sequentially clamped and fixed within a clamping hole of the fixed sleeve. A contact space for accommodating a stationary contact is formed between the two ends of the first and second movable contact pieces. The fixed sleeve has a slot along its length that communicates with the clamping hole. The clamping force of the fixed sleeve causes the first spring piece and the second spring piece to exert a pressure on the first and second movable contact pieces, respectively, to bring them closer together.

2. The moving contact assembly of the disconnecting switch according to claim 1, characterized in that: The first movable contact piece and the second movable contact piece are respectively provided with limit blocks at both ends of the clamping hole of the fixed sleeve. The limit blocks abut against both ends of the fixed sleeve and form a limiting fit between the limit blocks and the fixed sleeve.

3. The moving contact assembly of the disconnecting switch according to claim 2, characterized in that: The movable contact frame includes a first movable contact frame and a second movable contact frame that are interlocked with each other. The first movable contact frame is provided with a clamping groove for placing the movable contact piece assembly. When the second movable contact frame is fastened to the first movable contact frame, the second movable contact frame presses the movable contact piece assembly into the clamping groove.

4. The moving contact assembly of the disconnecting switch according to claim 3, characterized in that: Limiting protrusions are respectively provided at both ends of the clamping groove in the first movable contact frame. The limiting protrusions abut against the limiting blocks of the first movable contact piece and the second movable contact piece, and form a limiting cooperation between the limiting block and the limiting protrusion.

5. The moving contact assembly of the disconnecting switch according to claim 3 or 4, characterized in that: The first and second springs have bent support portions extending outside the clamping holes at both ends. The bent support portions of the first and second springs respectively abut against the first and second movable contact frames. The tail of the bent support portions of the first and second springs has an arc-shaped abutment portion extending outside the first and second movable contact frames. The arc-shaped abutment portions of the bent support portions of the first and second springs abut against both ends of the first and second movable contact pieces respectively.

6. The moving contact assembly of the disconnecting switch according to claim 3 or 4, characterized in that: The second movable contact frame is provided with multiple hooks arranged in a rectangular array, and the first movable contact frame is provided with multiple hook holes that cooperate with the multiple hooks, and multiple latches are respectively engaged in the multiple hook holes.

7. The moving contact assembly of the disconnecting switch according to claim 3 or 4, characterized in that: The second movable contact frame is symmetrically provided with two positioning blocks, and the first movable contact frame is provided with two positioning grooves that cooperate with the two positioning blocks. The two positioning blocks are respectively engaged in the two positioning grooves.

8. The moving contact assembly of the disconnecting switch according to claim 3 or 4, characterized in that: The first moving contact frame is provided with a square transmission hole that communicates with the clamping groove.

9. The moving contact assembly of the disconnecting switch according to claim 8, characterized in that: The second moving contact frame is provided with a square transmission protrusion that matches the square transmission hole.

10. The moving contact assembly of the disconnecting switch according to claim 1, characterized in that: Two first positioning blocks are symmetrically arranged on the side of the first movable contact piece facing the second movable contact piece, and two second positioning blocks are arranged on the second movable contact piece that abut against the two first positioning blocks.

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