CN220651929U

CN220651929U - Switch

Info

Publication number: CN220651929U
Application number: CN202322368453.7U
Authority: CN
Inventors: 周敏琛; 马雄杰; 杨鸣霏
Original assignee: Changshu Switchgear Manufacturing Co Ltd
Current assignee: Changshu Switchgear Manufacturing Co Ltd
Priority date: 2023-09-01
Filing date: 2023-09-01
Publication date: 2024-03-22
Anticipated expiration: 2033-09-01

Abstract

A switch belongs to the technical field of a piezoelectric device. Including the casing with be located the explosion chamber of casing, the casing includes base and bottom plate, base and bottom plate splice each other, and characteristics are: the explosion chamber includes the explosion subassembly and the free subassembly that disappears of separation, is equipped with the explosion chamber in the base, is equipped with a pair of protruding edge of segmentation on the both sides inner wall of explosion chamber, and the top of cutting apart protruding edge is for the free chamber that disappears that is used for holding the free subassembly that disappears, and the below of cutting apart protruding edge is for the explosion subassembly chamber that is used for holding the explosion subassembly. The advantages are that: the structure of the arc-extinguishing chamber is simplified, the installation and the replacement are more convenient, and the arc-extinguishing effect of the arc-extinguishing chamber is improved.

Description

Switch

Technical Field

The utility model belongs to the technical field of piezoelectric devices, and particularly relates to a switch.

Background

The frame-type breaker is a mechanical switch device which can be used for switching on, carrying and breaking current under the condition of normal circuit and also can be used for switching on, carrying for a certain time and breaking current under the condition of specified abnormal circuit. The circuit breaker provides a safety guarantee for the circuit, so that a user can safely use the electric energy, and the circuit breaker is widely applied to a power distribution system.

The arc-extinguishing chamber is an important component of the universal circuit breaker, and has important influence on arc-extinguishing performance. In the current breaking process, a large amount of ionized gas with high temperature and high pressure can be generated when the electric arc burns, and if the gas can not be cooled, compounded and dissociated in time, breaking failure can be possibly caused, and the working efficiency is greatly influenced.

The existing arc-extinguishing chamber anti-dissociation component and the arc-extinguishing component are integrated, the installation is complex, the arc-extinguishing effect is not ideal, and therefore the structure of the arc-extinguishing chamber of the existing circuit breaker still needs to be improved.

Disclosure of Invention

The utility model aims to provide a switch, wherein a dissociation component and a grid plate component of an arc extinguishing chamber are arranged in a split way, and are inserted into a shell at intervals, so that the structure of the arc extinguishing chamber is simplified, and the installation and the replacement are more convenient.

The switch comprises a shell and an arc extinguishing chamber positioned in the shell, wherein the shell comprises a base and a bottom plate, the base and the bottom plate are mutually spliced, the arc extinguishing chamber comprises a separated arc extinguishing component and a separation component, an arc extinguishing cavity is arranged in the base, a pair of separation convex edges are arranged on inner walls of two sides of the arc extinguishing cavity, the separation convex edges are arranged above the separation convex edges and are used for accommodating the separation component, and the arc extinguishing component cavity used for accommodating the arc extinguishing component is arranged below the separation convex edges.

In a specific embodiment of the utility model, the underside of the deionization unit is in contact with the dividing ledge and the upper side of the deionization unit is in contact with the ribs on the top wall of the base.

In another specific embodiment of the present utility model, the upper side of the arc extinguishing assembly is in contact with the dividing flange, and the lower side of the arc extinguishing assembly is in contact with the baffle plate in the base.

In a further specific embodiment of the utility model, contact ribs are provided on both sides of the arc extinguishing assembly cavity, the contact ribs contacting both sides of the arc extinguishing assembly.

In still another specific embodiment of the present utility model, the arc extinguishing assembly includes a plurality of grid plates, a pair of outer wall bodies and a pair of inner wall bodies, wherein a plurality of the grid plate arrays are arranged at intervals and both sides of the displayed grid plates are fixed to the pair of outer wall bodies, and the pair of inner wall bodies includes a first inner wall body and a second inner wall body, which are respectively matched with one of the corresponding outer wall bodies, and cover the grid plate legs of the grid plates.

In a further specific embodiment of the present utility model, the arc extinguishing assembly further includes a moving arc striking plate and a static arc striking plate, wherein the moving arc striking plate and the static arc striking plate are respectively installed at two ends of the grid plate array direction and extend downwards, and are mutually close to each other in the extending process to form an arc inlet of the arc extinguishing chamber.

In a further specific embodiment of the present utility model, the arc extinguishing assembly further includes a magnetism increasing block, and the magnetism increasing block is located on the outer side of the movable arc striking plate, which is far away from the arc extinguishing chamber of the arc extinguishing chamber.

In still another specific embodiment of the present utility model, the outer wall body includes an outer wall portion, a first cofferdam portion extending inward from both sides of the outer wall portion.

In a still more specific embodiment of the present utility model, the outer wall portion is provided with a plurality of insertion holes arranged side by side at intervals, and the insertion holes are used for the protruding cooperation of the two sides of the grid sheet, so as to realize the installation and fixation between the grid sheet and the outer wall portion.

In a further specific embodiment of the present utility model, the first inner wall body includes a first outer wall portion, a second cofferdam portion extending from both sides of the first outer wall portion to an outer wall body engaged therewith; the second cofferdam part is provided with a first male hasp, the first cofferdam part is provided with a female hasp, and the first male hasp is in snap fit with the female hasp.

The utility model has the beneficial effects that due to the adoption of the structure, the utility model has the following advantages: the anti-explosion type arc extinguishing chamber has the advantages that the anti-explosion component and the grid sheet component are arranged in a split manner, and the anti-explosion component and the grid sheet component are inserted into the shell at intervals, so that the structure of the arc extinguishing chamber is simplified, the installation and the replacement are more convenient, and the arc extinguishing effect of the arc extinguishing chamber is improved.

Drawings

Fig. 1 is a schematic diagram of a circuit breaker according to the present utility model;

fig. 2 is an explosion schematic diagram of a circuit breaker according to the present utility model;

fig. 3 is an explosion schematic of an arc chute according to the present utility model;

fig. 4 is a schematic side view of an outer wall of an arc chute according to the present utility model;

fig. 5 is a schematic view of the other side of the outer wall of the arc chute according to the present utility model;

fig. 6 is a schematic side view of a first inner wall of the arc chute according to the present utility model;

fig. 7 is another schematic view of a first inner wall of the arc chute according to the present utility model;

fig. 8 is a schematic side view of a second inner wall of the arc chute according to the present utility model;

fig. 9 is another schematic view of a second inner wall of the arc chute according to the present utility model.

In the figure: 1. arc extinguishing chamber, 11, arc extinguishing assembly, 111, grid plate, 112, outer wall body, 1121, outer wall portion, 11211, plug hole, 1122, first cofferdam portion, 11221, female snap, 11222, first open slot, 1123, first comb-like grid, 11231, first relief slot, 113, first inner wall body, 1131, first outer wall portion, 11311, second comb-like grid, 1132, second cofferdam portion, 11321, first male snap, 11322, second relief slot, 1133, magnetism increasing block receiving cavity, 11331, plug recess, 1134, first partition, 114, second inner wall body, 1141, second outer wall portion, 11411, third comb-like grid, 11412, plug boss, 1142, third cofferdam, 11421, second male snap, 11422, third relief slot, 1143, second partition, 115, magnetism increasing snap, 116, arc striking plate, 117, first shaft, 118, second shaft, 12, and arc extinguishing assembly; 100. the base, 101, separate protruding edge, 102, eliminate free cavity, 103, arc extinguishing assembly cavity, 104, contact protruding strip, 105, baffle; 200. a bottom plate.

Detailed Description

The following detailed description of specific embodiments of the utility model, while given in connection with the accompanying drawings, is not intended to limit the scope of the utility model, and any changes that may be made in the form of the inventive concepts described herein, without departing from the spirit and scope of the utility model.

In the following description, any reference to the directions or azimuths of up, down, left, right, front and rear is based on the positions shown in the corresponding drawings, and therefore, should not be construed as a limitation on the technical solutions provided by the present utility model.

Referring to fig. 1, the utility model relates to a switch comprising a housing having a contact system (not shown) and an arc chute 1 inside, the arc chute 1 being located in the opening direction of the contact system. The shell comprises a base 100 and a bottom plate 200, and the base 100 and the bottom plate 200 are mutually spliced to form the shell.

Referring to fig. 2, the arc extinguishing chamber 1 is of a split structure, that is, the arc extinguishing chamber 1 includes a separated arc extinguishing component 11 and a separation component 12, that is, the two components are not connected with each other. The arc extinguishing assembly 11 is used for extinguishing an arc, and the dissociation assembly 12 is used for dissociating ionized gas.

Correspondingly, an arc extinguishing chamber is arranged in the base 100, and one arc extinguishing chamber can accommodate one arc extinguishing chamber. In the present utility model, since the arc extinguishing module 11 and the dissociation module 12 are separately provided, the arc extinguishing chamber is required to position the arc extinguishing module 11 and the dissociation module 12. Specifically, a pair of dividing convex edges 101 are arranged on the inner walls of two sides of the arc extinguishing chamber, the upper side of the dividing convex edges 101 is provided with an arc extinguishing assembly chamber 102 for accommodating the arc extinguishing assembly 12, and the lower side of the dividing convex edges 101 is provided with an arc extinguishing assembly chamber 103 for accommodating the arc extinguishing assembly 11. The quenching chamber 102 communicates with the quenching module chamber 103 to facilitate the passage of the gas.

Specifically, the lower side of the deionization unit 12 contacts with the dividing flange 101, and the upper side of the deionization unit 12 contacts with the ribs on the top wall of the base 100. When the base 100 and the base plate 200 are mated with each other, the deionization module 12 is blocked in the deionization cavity 102 as described above.

The upper side of the arc extinguishing assembly 11 contacts the dividing flange 101, and the lower side of the arc extinguishing assembly 11 contacts the baffle 105 in the base 100. When the base 100 and the base plate 200 are spliced with each other, the arc extinguishing assembly 11 is plugged into the arc extinguishing assembly cavity 103.

More preferably, contact protruding strips 104 are disposed on two sides of the arc extinguishing assembly cavity 103, and the contact protruding strips 104 contact two side surfaces of the arc extinguishing assembly 11, so as to reduce friction force when the arc extinguishing assembly 11 is inserted or taken out.

Referring to fig. 3, the arc extinguishing assembly 11 includes a plurality of grid plates 111, and a plurality of grid plates 111 are arranged at intervals. More specifically, the plurality of grating sheets 111 are arranged to include long grating sheets and short grating sheets with different lengths, wherein the long grating sheets are arranged in one group and are positioned in the middle of the arc extinguishing assembly 11, and the short grating sheets are arranged in two groups and are positioned at two ends of the long grating sheet groups in the array direction.

The arc extinguishing assembly 11 further includes a pair of outer wall bodies 112, a pair of inner wall bodies, a movable striking plate 116, and a static striking plate (not shown). The pair of outer wall bodies 112 are located at both sides of the plurality of grid sheets 111 for fixing the grid sheets 111, that is, both sides of the plurality of grid sheets 111 are fixed to the pair of outer wall bodies 112.

The pair of inner wall bodies includes a first inner wall body 113 and a second inner wall body 114, which are respectively matched with one of the corresponding outer wall bodies 112, and cover the grid legs of the grid 111.

The movable arc striking plate 116 and the static arc striking plate are respectively installed at two ends of the grid plate 111 in the array direction, extend downwards, and are mutually close to each other in the extending process to form an arc inlet of the arc extinguishing chamber 1.

A magnetism increasing block 115 is further installed between the first inner wall 113 and the second inner wall 114. The position of the magnetism increasing block 115 corresponds to the position of the movable arc striking plate 116, that is, the magnetism increasing block 115 is located at the outer side of the movable arc striking plate 116, which is far away from the arc extinguishing chamber of the arc extinguishing chamber 1, and is used for improving the arc moving capability. The upper ends of the movable arc striking pieces 116 are also fixed on the pair of outer wall bodies 112, and the lower ends of the movable arc striking pieces are bent and then approach the middle part of the arc extinguishing assembly 11. Similarly, the static striking plate also approaches to the middle part of the arc extinguishing assembly 11, and cooperates with the dynamic striking plate 116 to form an arc inlet of the arc extinguishing assembly 11.

The arc extinguishing assembly 11 further comprises a first serial shaft 117 and a second serial shaft 118, the first serial shaft 117 is located above the second serial shaft 118, and the first serial shaft 117 is connected with the grid legs of the long grid sheet and the short grid sheet in series. While the second tandem axle 118 only concatenates the gate legs of the long gate. The two ends of the first and second tandem shafts 117 and 118 extend into the pair of outer wall bodies 112 and the pair of inner wall bodies, thereby ensuring the positioning relationship of the grid 111, the outer wall bodies 112 and the inner wall.

Fig. 4 and 5 are schematic views of the outer wall 112. The outer wall body 112 includes an outer wall portion 1121 and a first bank portion 1122, and the first bank portion 1122 extends inward from both sides of the outer wall portion 1121. The outer wall 1121 is provided with a plurality of insertion holes 11211 arranged at intervals, and the insertion holes 11211 are used for protruding and matching at two sides of the grid 111, so as to realize the installation and fixation between the grid 111 and the outer wall 1121.

A female snap 11221 is provided on the first cofferdam 1122, and the female snap 11221 is used for snap-fitting with the inner wall. The first cofferdam 1122 is provided with a first open slot 11222 for facilitating penetration of the second tandem axle 118.

A first comb-like grating 1123 is provided inside the outer wall portion 1121, and the first comb-like grating 1123 is fitted into a gap between adjacent grating pieces 111. In order to facilitate the passage of the first tandem axle 117, a first relief slot 11231 is provided on the first comb-like gate 1123.

Preferably, the upper end of the first comb-shaped grating 1123 is inclined.

Fig. 6 and 7 are schematic views of the first inner wall 113. The first inner wall 113 includes a first outer wall 1131 and a second bank 1132, and the second bank 1132 extends from both sides of the first outer wall 1131 to the outer wall 112 engaged therewith.

The first outer wall 1131 is provided with a magnetism increasing block accommodating cavity 1133 extending toward the second inner wall 114, and the magnetism increasing block accommodating cavity 1133 is used for accommodating the magnetism increasing block 115. The first outer wall portion 1131 is further provided with a plurality of first partitions 1134 extending toward the outer wall body 112 to be fitted thereto. The first partition 1134 is located at a lower portion of the first inner wall 113 in the height direction.

The first outer sidewall 1131 is provided with a second comb-shaped grating 11311 extending towards the outer wall 112 matched with the first outer sidewall 1131, and the second comb-shaped grating 11311 is spliced with the first comb-shaped grating 1123 to form a complete comb-shaped grating, and one grating leg of the grating 111 is covered.

A first male snap 11321 is provided on the second cofferdam 1132, and the first male snap 11321 is snap-fitted with the female snap 11221. The second bank 1132 is further provided with a second relief groove 11322 through which the first tandem axle 117 passes.

Fig. 8 and 9 are schematic views of the second inner wall 114. The second inner wall 114 has a structural shape substantially symmetrical to that of the first inner wall 113, but the second inner wall 114 has no magnetism increasing block accommodation cavity 1133.

The second inner wall 114 includes a second outer wall 1141 and a third dam 1142, and the third dam 1142 extends from both sides of the second outer wall 1141 to the outer wall 112 engaged therewith.

A plurality of second partitions 1143 are further provided on the second outer wall portion 1141 to extend toward the outer wall body 112 to be fitted thereto. The second partition 1143 is located at a lower portion of the second inner wall 114 in the height direction.

A third comb-shaped grid 11411 extending towards the outer wall body 112 matched with the second outer wall portion 1141 is arranged on the second outer wall portion 1141, and the third comb-shaped grid 11411 is spliced with the first comb-shaped grid 1123 to form a complete comb-shaped grid, and covers the other grid leg of the grid sheet 111.

A second male snap 11421 is provided on the third bank 1142, and the second male snap 11421 is snap-fitted with the female snap 11221. A third relief groove 11422 through which the first tandem axle 117 passes is further provided in the third weir 1142.

Since the first inner wall 113 and the second inner wall 114 are also spliced, a plugging protrusion 11412 protruding outwards is provided on a side of the second outer side wall 1141 of the second inner wall 114 facing the first inner wall 113; correspondingly, a plugging concave pit 11331 is arranged on the annular wall of the magnetism increasing block accommodating cavity 1133, and the plugging convex head 11412 is in plugging fit with the plugging concave pit 11331, so that the mutual positioning of the first inner wall body 113 and the second inner wall body 114 is ensured.

Claims

1. Switch, including casing and be located explosion chamber (1) in the casing, the casing includes base (100) and bottom plate (200), base (100) and bottom plate (200) splice each other, its characterized in that: the arc extinguishing chamber (1) comprises an arc extinguishing component (11) and an arc extinguishing component (12) which are separated, an arc extinguishing cavity is arranged in the base (100), a pair of segmentation convex edges (101) are arranged on the inner walls of two sides of the arc extinguishing cavity, the upper parts of the segmentation convex edges (101) are used for accommodating the arc extinguishing component cavity (103) of the arc extinguishing component (11), and the lower parts of the segmentation convex edges (101) are used for accommodating the arc extinguishing component cavity (102) of the arc extinguishing component (12).

2. A switch as claimed in claim 1, wherein: the lower side of the deionization component (12) is in contact with the dividing convex edge (101), and the upper side of the deionization component (12) is in contact with a convex rib on the top wall of the base (100).

3. A switch as claimed in claim 1, wherein: the upper side of the arc extinguishing component (11) is contacted with the dividing convex edge (101), and the lower side of the arc extinguishing component (11) is contacted with the baffle plate (105) in the base (100).

4. A switch as claimed in claim 1, wherein: contact convex strips (104) are arranged on two sides of the arc extinguishing assembly cavity (103), and the contact convex strips (104) are in contact with two side surfaces of the arc extinguishing assembly (11).

5. A switch as claimed in claim 1, wherein: the arc extinguishing assembly (11) comprises a plurality of grid plates (111), a pair of outer wall bodies (112) and a pair of inner wall bodies, wherein a plurality of grid plates (111) are arranged at intervals, two sides of the grid plates (111) which are arranged are fixed on the pair of outer wall bodies (112), and the pair of inner wall bodies comprise a first inner wall body (113) and a second inner wall body (114) which are respectively matched with one of the corresponding outer wall bodies (112) and are used for wrapping grid plate legs of the grid plates (111).

6. A switch as defined in claim 5, wherein: the arc extinguishing assembly (11) further comprises a movable arc striking piece (116) and a static arc striking piece, wherein the movable arc striking piece (116) and the static arc striking piece are respectively arranged at two ends of the grid piece (111) in the array direction and extend downwards to be close to each other in the extending process to form an arc inlet of the arc extinguishing chamber (1).

7. A switch as defined in claim 6, wherein: the arc extinguishing assembly (11) further comprises a magnetism increasing block (115), and the magnetism increasing block (115) is located on the outer side of the movable arc striking piece (116) away from the arc extinguishing cavity of the arc extinguishing chamber (1).

8. A switch as defined in claim 5, wherein: the outer wall body (112) includes an outer wall portion (1121) and a first bank portion (1122), and the first bank portion (1122) extends inward from both sides of the outer wall portion (1121).

9. A switch as claimed in claim 8, wherein: the outer wall part (1121) is provided with plug holes (11211) which are arranged side by side at intervals, and the plug holes (11211) are used for protruding matching of two sides of the grid sheet (111), so that the grid sheet (111) and the outer wall part (1121) are installed and fixed.

10. A switch as claimed in claim 8, wherein: the first inner wall body (113) comprises a first outer side wall part (1131) and a second cofferdam part (1132), and the second cofferdam part (1132) extends from two sides of the first outer side wall part (1131) to an outer wall body (112) matched with the first outer side wall part; a first male buckle (11321) is arranged on the second cofferdam part (1132), a female buckle (11221) is arranged on the first cofferdam part (1122), and the first male buckle (11321) is in snap fit with the female buckle (11221).