Switch arc extinguish chamber of dual-power automatic change-over switch

Abstract

The utility model relates to the technical field of electrical switches, and discloses a switch arc extinguish chamber of a dual-power automatic change-over switch, which comprises an arc extinguish cover, arc extinguish cavities are arranged on two sides of the arc extinguish cover, side cover plates are fixedly mounted at two ends of the arc extinguish cover, and outer cover plates are movably mounted on the outer sides of the side cover plates. According to the utility model, the insertion block is firstly inserted into the installation groove, the arc extinguishing grid sheet extrudes the elastic convex block, and the telescopic spring is deformed under the extrusion force of the elastic convex block, so that the elastic potential energy is released to assist the elastic convex block in extruding the insertion block, the insertion block is fixed, and the arc extinguishing grid sheet is installed in the installation groove. Compared with a switch arc extinguish chamber of a traditional dual-power-supply automatic change-over switch, the switch arc extinguish chamber of the dual-power-supply automatic change-over switch releases elastic potential energy through the telescopic spring to drive the elastic protruding block to extrude the inserting block, and therefore installation and fixation of the arc extinguish grid pieces are facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of electrical switches, and more specifically, the utility model relates to an arc extinguishing chamber of a dual-power automatic transfer switch. Background Art

[0002] An arc extinguishing chamber is a device surrounding the switch contacts, and its main function is to limit the spatial position of the arc and accelerate the extinction of the arc; through specific designs, such as generating high-pressure air flow or oil flow, the arc is longitudinally or laterally blown, so that the arc is quickly cooled, thereby weakening the thermal ionization effect of the arc and accelerating the extinction of the arc.

[0003] The traditional arc extinguishing chamber of a dual-power automatic transfer switch has the following deficiencies: during the manufacturing process of the traditional arc extinguishing chamber of a dual-power automatic transfer switch, the core process challenge focuses on the precise assembly of multiple arc extinguishing grid plates. The main function of the arc extinguishing grid plates is to divide and cool the arc, thereby accelerating the extinction of the arc. If the grid plates cannot be accurately positioned and assembled, the gaps between them may be uneven, resulting in poor flow of the arc between the grid plates or the arc cannot be effectively divided; this will directly affect the arc extinguishing effect, prolong the arc extinguishing time, and may even fail to completely extinguish the arc. Therefore, it needs to be improved. Summary of the Utility Model

[0004] In order to overcome the deficiencies of the prior art, the utility model provides an arc extinguishing chamber of a dual-power automatic transfer switch, which has the advantage of being easy to assemble.

[0005] To achieve the above object, the utility model provides the following technical solution: An arc extinguishing chamber of a dual-power automatic transfer switch includes an arc extinguishing cover. Arc extinguishing cavities are provided on both sides of the arc extinguishing cover. Side cover plates are fixedly installed at both ends of the arc extinguishing cover. An outer cover plate is movably installed on the outer side of the side cover plate. Installation grooves are evenly provided on the inner side of the side cover plate. Plug blocks are movably installed inside the installation grooves. Arc extinguishing grid plates are fixedly installed on the inner sides of the plug blocks. An activity groove is provided on the inner side of the installation groove. An elastic convex block is movably installed inside the activity groove. The elastic convex block corresponds to the plug block.

[0006] As a preferred technical solution of the utility model, a rectangular block extending to the outside of the outer cover plate is fixedly installed on the outer side of the side cover plate. Rectangular grooves are provided on both sides of the top of the rectangular block. Arc-shaped blocks extending to the outside of the rectangular block are movably installed inside the rectangular grooves. The arc-shaped blocks correspond to the side cover plates.

[0007] As a preferred technical solution of the utility model, a limiting groove is provided on the inner side of the activity groove. A limiting block is fixedly installed on the outer side of the elastic convex block. The limiting block is movably connected inside the limiting groove.

[0008] As a preferred technical solution of the present utility model, a notch is provided on the front side of the arc extinguishing grid piece, and a U-shaped groove is provided on the rear side of the arc extinguishing grid piece.

[0009] As a preferred technical solution of the present utility model, a telescopic spring is elastically installed at the bottom of the movable groove, and the telescopic spring is located at the bottom of the elastic bump.

[0010] As a preferred technical solution of the present utility model, a sliding groove is provided inside the rectangular groove, and a slider located inside the sliding groove is fixedly installed on the outer side of the arc-shaped block.

[0011] As a preferred technical solution of the present utility model, a reset spring is elastically installed at the bottom of the rectangular groove, and the reset spring is located at the bottom of the arc-shaped block.

[0012] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0013] 2. In the present utility model, the plug block is first inserted into the installation groove, so that the arc extinguishing grid piece squeezes the elastic bump. The telescopic spring deforms under the squeezing force of the elastic bump, thereby releasing elastic potential energy to assist the elastic bump to squeeze the plug block, so as to fix the plug block, and thus install the arc extinguishing grid piece inside the installation groove. Compared with the switch arc extinguishing chamber of the traditional dual-power automatic transfer switch, the switch arc extinguishing chamber of this dual-power automatic transfer switch drives the elastic bump to squeeze the plug block by releasing the elastic potential energy of the telescopic spring, so as to facilitate the installation and fixation of the arc extinguishing grid piece.

[0014] 1. In the present utility model, the outer cover plate squeezes the arc-shaped block, so that the arc-shaped block shrinks into the rectangular groove, thereby squeezing the reset spring. When the rectangular block moves to the outside of the outer cover plate, the reset spring releases elastic potential energy to push out the arc-shaped block. Compared with the switch arc extinguishing chamber of the traditional dual-power automatic transfer switch, the switch arc extinguishing chamber of this dual-power automatic transfer switch connects the side cover plate and the outer cover plate through the arc-shaped block, which is convenient for installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of the present utility model;

[0016] Figure 2 is a schematic diagram of the arc extinguishing grid piece of the present utility model;

[0017] Figure 3 is a schematic vertical sectional view of the present utility model;

[0018] Figure 4 is Figure 3 a partial enlarged structural schematic diagram at A in

[0019] Figure 5Schematic diagram of the horizontal cross-section of the present utility model;

[0020] Figure 6 is Figure 5 Schematic diagram of the enlarged partial structure at position B in the middle.

[0021] In the figure: 1, arc extinguishing cover; 2, arc extinguishing cavity; 3, side cover plate; 4, outer cover plate; 5, installation groove; 6, movable groove; 7, elastic convex block; 8, telescopic spring; 9, limit groove; 10, limit block; 11, arc extinguishing grid piece; 12, insertion block; 13, notch; 14, U-shaped groove; 15, rectangular block; 16, rectangular groove; 17, arc-shaped block; 18, reset spring; 19, chute; 20, slider. Specific embodiments

[0022] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0023] As Figures 1 to 6 shown, the present utility model provides an arc extinguishing chamber for a dual-power automatic transfer switch, including an arc extinguishing cover 1. Arc extinguishing cavities 2 are opened on both sides of the arc extinguishing cover 1. Side cover plates 3 are fixedly installed at both ends of the arc extinguishing cover 1. An outer cover plate 4 is movably installed outside the side cover plates 3. Installation grooves 5 are evenly opened on the inner side of the side cover plates 3. Insertion blocks 12 are movably installed inside the installation grooves 5. Arc extinguishing grid pieces 11 are fixedly installed inside the insertion blocks 12. Movable grooves 6 are opened on the inner side of the installation grooves 5. Elastic convex blocks 7 are movably installed inside the movable grooves 6. The elastic convex blocks 7 correspond to the insertion blocks 12.

[0024] When it is necessary to install the arc extinguishing grid pieces 11, first insert the insertion blocks 12 into the inside of the installation grooves 5, so that the arc extinguishing grid pieces 11 squeeze the elastic convex blocks 7, causing the elastic convex blocks 7 to contract into the inside of the movable grooves 6 under the squeezing force, causing the elastic convex blocks 7 to drive the limit blocks 10 to move downward inside the limit grooves 9, thereby limiting the elastic convex blocks 7. The telescopic springs 8 are deformed under the squeezing force of the elastic convex blocks 7, thereby releasing elastic potential energy to assist the elastic convex blocks 7 to squeeze the insertion blocks 12, thereby fixing the insertion blocks 12, and thus installing the arc extinguishing grid pieces 11 inside the installation grooves 5.

[0025] By first inserting the insertion block 12 into the interior of the installation groove 5, the arc extinguishing grid 11 squeezes the elastic bump 7, and the telescopic spring 8 deforms under the squeezing force of the elastic bump 7, thereby releasing elastic potential energy to assist the elastic bump 7 in squeezing the insertion block 12, thereby fixing the insertion block 12, and thus installing the arc extinguishing grid 11 inside the installation groove 5. Compared with the switch arc extinguishing chamber of the traditional dual-power automatic transfer switch, the switch arc extinguishing chamber of this dual-power automatic transfer switch drives the elastic bump 7 to squeeze the insertion block 12 by releasing the elastic potential energy of the telescopic spring 8, thereby facilitating the installation and fixation of the arc extinguishing grid 11.

[0026] Wherein, a rectangular block 15 extending to the outside of the outer cover plate 4 is fixedly installed on the outside of the side cover plate 3, rectangular grooves 16 are formed on both sides of the top of the rectangular block 15, and an arc-shaped block 17 extending to the outside of the rectangular block 15 is movably installed inside the rectangular grooves 16, and the arc-shaped block 17 corresponds to the side cover plate 3.

[0027] When the side cover plate 3 drives the rectangular block 15 to be inserted outside the outer cover plate 4, first, the arc-shaped block 17 is driven by the squeezing force to contract into the interior of the rectangular groove 16 to squeeze the return spring 18, causing the return spring 18 to deform. When the rectangular block 15 moves to the outside of the outer cover plate 4, the return spring 18 releases elastic potential energy to push the arc-shaped block 17 to move outward, thereby fixing the side cover plate 3 and connecting the side cover plate 3 and the outer cover plate 4.

[0028] By squeezing the arc-shaped block 17 through the outer cover plate 4, the arc-shaped block 17 contracts into the interior of the rectangular groove 16, thereby squeezing the return spring 18. When the rectangular block 15 moves to the outside of the outer cover plate 4, the return spring 18 releases elastic potential energy to push out the arc-shaped block 17. Compared with the switch arc extinguishing chamber of the traditional dual-power automatic transfer switch, the switch arc extinguishing chamber of this dual-power automatic transfer switch connects the side cover plate 3 and the outer cover plate 4 through the arc-shaped block 17, which is convenient for installation.

[0029] Wherein, a limiting groove 9 is formed inside the movable groove 6, a limiting block 10 is fixedly installed on the outside of the elastic bump 7, and the limiting block 10 is movably connected inside the limiting groove 9.

[0030] The up and down movement of the elastic bump 7 drives the limiting block 10 to move up and down inside the limiting groove 9, thereby playing a role in limiting the elastic bump 7.

[0031] Wherein, a notch 13 is formed on the front side of the arc extinguishing grid 11, and a U-shaped groove 14 is formed on the rear side of the arc extinguishing grid 11.

[0032] This setting method enables the arc extinguishing cover 1 to be pre-installed and formed, which can better separate two arc extinguishing cavities 2 that are completely isolated and have no air gap, and can ensure that when arcs are generated in the two arc extinguishing cavities 2 due to the separation and closing of the contacts, short circuits between different power sources will not occur due to the existence of the air gap.

[0033] Among them, a telescopic spring 8 is elastically installed at the bottom of the movable groove 6, and the telescopic spring 8 is located at the bottom of the elastic bump 7.

[0034] The elastic bump 7 moves downward to squeeze the telescopic spring 8, causing the telescopic spring 8 to deform, thereby releasing elastic potential energy to push the elastic bump 7 to move outward to fix the arc extinguishing grid 11.

[0035] Among them, a sliding groove 19 is provided inside the rectangular groove 16, and a slider 20 located inside the sliding groove 19 is fixedly installed on the outer side of the arc-shaped block 17.

[0036] First, the arc-shaped block 17 is driven by the extrusion force to contract into the rectangular groove 16 to squeeze the reset spring 18. When the rectangular block 15 moves to the outside of the outer cover plate 4, the side cover plate 3 is connected to the outer cover plate 4.

[0037] Among them, a reset spring 18 is elastically installed at the bottom of the rectangular groove 16, and the reset spring 18 is located at the bottom of the arc-shaped block 17.

[0038] The reset spring 18 deforms. When the rectangular block 15 moves to the outside of the outer cover plate 4, the reset spring 18 releases elastic potential energy to push the arc-shaped block 17 to move outward, thereby fixing the side cover plate 3.

[0039] The working principle and usage process of the present utility model:

[0040] When the arc extinguishing grid 11 needs to be installed, first insert the plug 12 into the installation groove 5, so that the arc extinguishing grid 11 squeezes the elastic bump 7, causing the elastic bump 7 to contract into the movable groove 6 under the extrusion force, and the elastic bump 7 drives the limit block 10 to move downward in the limit groove 9, thereby limiting the elastic bump 7. The telescopic spring 8 deforms under the extrusion force of the elastic bump 7, thereby releasing elastic potential energy to assist the elastic bump 7 to squeeze the plug 12, thereby fixing the plug 12, and thus installing the arc extinguishing grid 11 in the installation groove 5.

[0041] When driving the rectangular block 15 of the side cover plate 3 to insert it outside the outer cover plate 4, first, the arc-shaped block 17 is driven by the extrusion force to contract into the inside of the rectangular groove 16 to extrude the return spring 18, causing the return spring 18 to deform. When the rectangular block 15 moves outside the outer cover plate 4, the return spring 18 releases its elastic potential energy to push the arc-shaped block 17 to move outward, thereby fixing the side cover plate 3 and connecting the side cover plate 3 and the outer cover plate 4.

[0042] It should be noted that in this text, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0043] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A switch arc extinguishing chamber of a dual power automatic transfer switch, comprising an arc extinguishing cover (1), characterized in that: Arc extinguishing cavities (2) are provided on both sides of the arc extinguishing hood (1), side cover plates (3) are fixedly installed at both ends of the arc extinguishing hood (1), an outer cover plate (4) is movably installed on the outer side of the side cover plate (3), mounting grooves (5) are evenly provided on the inner side of the side cover plate (3), an insert block (12) is movably installed inside the mounting groove (5), an arc extinguishing grid (11) is fixedly installed on the inner side of the insert block (12), a movable groove (6) is provided on the inner side of the mounting groove (5), an elastic protrusion (7) is movably installed inside the movable groove (6), and the elastic protrusion (7) corresponds to the insert block (12).

2. The switch arc extinguishing chamber of a dual power automatic transfer switch according to claim 1, characterized in that: A rectangular block (15) extending to the outside of the outer cover plate (4) is fixedly mounted on the outside of the side cover plate (3); rectangular grooves (16) are provided on both sides of the top of the rectangular block (15); an arc block (17) extending to the outside of the rectangular block (15) is movably mounted inside the rectangular groove (16); the arc block (17) corresponds to the side cover plate (3).

3. The switch arc extinguishing chamber of a dual power automatic transfer switch according to claim 1, characterized in that: A limiting groove (9) is provided on the inner side of the movable groove (6), a limiting block (10) is fixedly mounted on the outer side of the elastic protrusion (7), and the limiting block (10) is movably connected to the inside of the limiting groove (9).

4. The switch arc extinguishing chamber of a dual power automatic transfer switch according to claim 1, characterized in that: A notch (13) is provided on the front side of the arc-extinguishing grid (11), and a U-shaped groove (14) is provided on the rear side of the arc-extinguishing grid (11).

5. The switch arc extinguishing chamber of a dual power automatic transfer switch according to claim 1, characterized in that: A telescopic spring (8) is elastically mounted at the bottom of the movable groove (6), and the telescopic spring (8) is located at the bottom of the elastic protrusion (7).

6. The switch arc extinguishing chamber of a dual power automatic transfer switch according to claim 2, characterized in that: A slide groove (19) is provided on the inner side of the rectangular groove (16), and a sliding block (20) located inside the slide groove (19) is fixedly mounted on the outer side of the arc block (17).

7. The switch arc extinguishing chamber of a dual power automatic transfer switch according to claim 2, characterized in that: A return spring (18) is elastically mounted at the bottom of the rectangular groove (16), and the return spring (18) is located at the bottom of the arc block (17).

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