Switch body of isolating switch

Abstract

The utility model belongs to the field of disconnecting switches, and particularly relates to a switch body of a disconnecting switch, which comprises a shell and two groups of switch units, each group of switch unit comprises a static contact, a main shaft and a moving contact, the static contacts of the two groups of switch units are provided with wiring terminals exposed outside the shell, and the main shaft is provided with a plurality of wiring terminals. A series static contact is arranged between the two groups of corresponding switch units in the shell; two ends of the series static contact are provided with two contact parts matched with the moving contacts of the two groups of switch units; according to the switch, the series static contacts are additionally arranged between the two groups of switch units in the shell, and the wire inlet end and the load end are respectively connected to the wiring terminals of the static contacts of the two groups of switch units during wiring, so that wire doubling in the switch body can be effectively avoided, and the wiring efficiency is improved. And the two groups of switch units are arranged in the same shell, so that the production cost is reduced, and the action synchronism of the two groups of switch units is improved.

Description

Technical Field

[0001] This utility model belongs to the field of disconnecting switch technology, and specifically relates to a disconnecting switch body. 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. When electrical equipment is under 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 operating mechanism drives the main shaft of the switch body to rotate, causing the switch to open or close.

[0003] The existing disconnect switches have an unreasonable layout of switch units inside the switch body. When wiring, it is necessary to connect two sets of switch units inside the switch body in parallel, which is time-consuming, labor-intensive, and complicated, and also poses safety hazards. 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 switch body for a disconnecting switch includes a housing and two sets of switch units disposed within the housing. Each set of switch units includes a stationary contact disposed within the housing, a main shaft rotatably disposed within the housing, and a moving contact disposed on the main shaft. The stationary contacts of the two sets of switch units are provided with terminals exposed outside the housing. A series stationary contact is provided between the two sets of switch units within the housing. The two ends of the series stationary contact have two contact portions that cooperate with the moving contacts of the two sets of switch units.

[0006] In some embodiments, the housing has a partition portion separating two sets of switch assemblies, the partition portion dividing the inner cavity of the housing into two receiving cavities, and the two sets of switch units are respectively disposed in the two receiving cavities.

[0007] In some embodiments, the partition portion is provided with a groove communicating between two accommodating cavities, the series stationary contact is placed in the groove, and the two contact portions of the series stationary contact extend into the two accommodating cavities respectively.

[0008] In some embodiments, an insulating pressure block is provided in the groove to cover the series stationary contact, and the insulating pressure block presses the series stationary contact tightly in the groove.

[0009] In some embodiments, the accommodating cavity has a partition protrusion separating the contact portion of the series stationary contacts from the stationary contacts of each group of switching units.

[0010] In some embodiments, two arc-extinguishing chambers are provided at both ends of the moving contact of each group of switching units within the housing, and an arc-extinguishing channel matching the movement trajectory of the moving contact is provided within the arc-extinguishing chamber.

[0011] In some embodiments, a plurality of arc-blocking protrusions are respectively provided inside the housing at the rear side of the arc-extinguishing chamber, and an exhaust channel is formed between the plurality of arc-blocking protrusions and the inner wall of the housing, and an exhaust hole connected to the exhaust channel is provided on the housing.

[0012] In some embodiments, the housing is provided with a positioning groove that mates with a stationary contact. The stationary contact engages with the positioning groove. One end of the stationary contact has a stationary contact portion that mates with a moving contact, and the other end of the stationary contact has a wiring portion that connects to a terminal block.

[0013] In some embodiments, the terminal block includes a nut and a terminal screw. The housing is provided with a limiting groove that mates with the nut. The nut is engaged in the limiting groove. The terminal screw passes through the through hole of the terminal block and is connected to the nut.

[0014] In some embodiments, the number of switch bodies is multiple, and the multiple switch bodies are stacked along the axial direction of the main shaft, and the housings of the multiple switch bodies have engagement grooves for engaging the operating mechanism.

[0015] The beneficial effects of this utility model are as follows: By adding a series stationary contact between the two sets of switch units inside the housing, during wiring, the input terminal and the load terminal are connected to the wiring terminals of the stationary contacts of the two sets of switch units respectively, thereby effectively avoiding parallel wiring within the switch body and improving wiring efficiency. Furthermore, setting the two sets of switch units in the same housing helps reduce production costs and improves the synchronization of the operation of the two sets of switch units. 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 an internal structural diagram of an embodiment of the present utility model;

[0020] Figure 4 This is a front view of the internal structure of an embodiment of this 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 disconnector switch body includes a housing 1 and two sets of switch units 2 disposed within the housing 1. Each set of switch units 2 includes a stationary contact 21 disposed within the housing 1, a main shaft 22 rotatably disposed within the housing 1, and a moving contact 23 disposed on the main shaft 22. The stationary contacts 21 of both sets of switch units 2 have terminals 24 exposed outside the housing 1. Series stationary contacts 25 are disposed between the two sets of switch units 2 within the housing 1, with two contact portions 251 at both ends that mate with the moving contacts 23 of the two sets of switch units 2. By adding series stationary contacts between the two sets of switch units within the housing, during wiring, the input terminal and load terminal are connected to the terminals of the stationary contacts of the two sets of switch units respectively, thereby effectively avoiding parallel wiring within the switch body and improving wiring efficiency. Furthermore, the two sets of switch units are disposed within the same housing, which helps reduce production costs and improves the synchronization of the operation of the two sets of switch units.

[0026] like Figures 2-4 As shown, the housing 1 has a partition 11 separating two sets of switch assemblies 2. The partition 11 divides the inner cavity of the housing 1 into two receiving cavities 100, and the two sets of switch units 2 are respectively disposed in the two receiving cavities 100. The partition 11 can isolate and insulate, preventing arcing between the two sets of switch units and improving the working reliability of the switch body. A groove 111 is provided on the partition 11, which connects the two receiving cavities 100. The series stationary contact 25 is placed in the groove 111, and the two contact portions 251 of the series stationary contact 25 extend into the two receiving cavities 100 respectively. The series stationary contact is engaged in the groove of the partition 111, which facilitates the assembly of the series stationary contact with the housing. An insulating pressure block 26 is provided in the groove 111, which covers the series stationary contact 25 and presses the series stationary contact 25 tightly in the groove 111. The insulating pressure block prevents the series stationary contacts from loosening or falling out of the slot, and also isolates the two sets of switching units to avoid arcing. The accommodating cavity 100 has a partition protrusion 101 separating the contact portion 251 of the series stationary contacts 25 from the stationary contacts 21 of each set of switching units 2. The partition protrusion acts as an isolation to prevent arcing between the stationary contacts of each set of switching units and the series stationary contacts. Two arc-extinguishing chambers 27 are provided inside the housing 1 at both ends of the moving contacts 23 of each set of switching units 2. Each arc-extinguishing chamber 27 has an arc-extinguishing channel that matches the movement trajectory of the moving contact 23. Because the arc-extinguishing chamber has an arc-extinguishing channel that matches the movement trajectory of the moving contact, the arc can quickly enter the arc-extinguishing chamber and be quickly extinguished, which helps improve the arc-extinguishing performance of the switch body. Multiple arc-blocking protrusions 102 are respectively provided inside the housing 1 at the rear side corresponding to the arc-extinguishing chamber 27. The multiple arc-blocking protrusions 102 form an exhaust channel 103 between themselves and the inner wall of the housing 1. The housing 1 is provided with exhaust holes 104 that are connected to the exhaust channels 103. The arc-blocking protrusions can cut and cool the electric arc, and the exhaust channels can smoothly discharge the air pressure inside the switch body through the exhaust holes, thereby improving the arc-extinguishing performance of the switch body.

[0027] like Figure 2As shown in Figure 3, the housing 1 has a positioning groove 105 that mates with the stationary contact 21. The stationary contact 21 engages with the positioning groove 105. One end of the stationary contact 21 has a stationary contact portion 211 that mates with the moving contact 23, and the other end of the stationary contact 21 has a wiring portion 212 that connects to the terminal block 24. The stationary contact and the housing are assembled using a snap-fit ​​method, which facilitates the assembly of the stationary contact and the housing. The terminal block 24 includes a nut 241 and a wiring screw 242. The housing 1 has a limiting groove 106 that mates with the nut 241. The nut 241 engages with the limiting groove 106, and the wiring screw 242 passes through the through hole of the wiring portion 212 and is connected to the nut 241. The terminal block is engaged with the housing by the nut in the limiting groove, which prevents the terminal block from loosening or falling off the housing, making wiring more convenient.

[0028] like Figure 1 and 3 As shown, there are multiple switch bodies stacked along the axial direction of the main shaft 22, and the housing 1 of each switch body has a locking groove 107 for engaging with the operating mechanism. The stacking of multiple switch bodies along the axial direction of the main shaft ensures the synchronicity of their opening and closing actions. Furthermore, the locking grooves facilitate the assembly of the switch bodies and the operating mechanism, resulting in higher assembly efficiency.

[0029] 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 switch body for a disconnecting switch, characterized in that: The device includes a housing and two sets of switch units disposed within the housing. Each set of switch units includes a stationary contact disposed within the housing, a main shaft rotatably disposed within the housing, and a moving contact disposed on the main shaft. The stationary contacts of the two sets of switch units are provided with terminals exposed outside the housing. A series stationary contact is provided between the two sets of switch units within the housing. The series stationary contact has two contact portions at both ends that cooperate with the moving contacts of the two sets of switch units. The housing has a partition separating two sets of switch assemblies, which divides the inner cavity of the housing into two receiving cavities, and the two sets of switch units are respectively disposed in the two receiving cavities. The partition section is provided with a groove that connects the two accommodating cavities. The series stationary contact is placed in the groove, and the two contact portions of the series stationary contact extend into the two accommodating cavities respectively. The groove is provided with an insulating pressure block that covers the series stationary contact, and the insulating pressure block presses the series stationary contact tightly into the groove. The accommodating cavity has a partition protrusion separating the contact portion of the series stationary contacts from the stationary contacts of each group of switching units; The housing contains two arc-extinguishing chambers at both ends of the moving contact of each switch unit, and each arc-extinguishing chamber contains an arc-extinguishing channel that matches the movement trajectory of the moving contact. Multiple arc-blocking protrusions are respectively provided inside the shell at the rear side of the arc-extinguishing chamber, and an exhaust channel is formed between the multiple arc-blocking protrusions and the inner wall of the shell. An exhaust hole connected to the exhaust channel is provided on the shell. The housing is provided with a positioning slot that mates with the stationary contact. The stationary contact engages with the positioning slot. One end of the stationary contact has a stationary contact portion that mates with the moving contact, and the other end of the stationary contact has a wiring portion that connects to the wiring terminal. The terminal block includes a nut and a terminal screw. The housing has a limiting groove that mates with the nut. The nut is engaged in the limiting groove. The terminal screw passes through the through hole of the terminal block and is connected to the nut. The number of switch bodies is multiple, and the multiple switch bodies are stacked along the axial direction of the main shaft, and the housing of the multiple switch bodies has a latching groove for the operation mechanism to engage.

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