Switch with arc extinguish chamber

Abstract

A switch with an arc extinguish chamber belongs to the technical field of voltage electric appliances. Comprising an arc extinguish chamber and a shell, the shell comprises a base and a bottom plate, a containing cavity is formed in the shell after the base and the bottom plate are spliced, and the arc extinguish chamber is inserted downwards from an opening in the top of the containing cavity and fixedly connected with the base and the bottom plate. The circuit breaker is characterized in that a mounting table extends from one side, far away from the accommodating cavity, of the bottom plate, and one side, close to the bottom plate, of the arc extinguish chamber is fixedly mounted on the mounting table. The arc extinguishing chamber has the advantages that the mounting table is arranged on the outer side, far away from the accommodating cavity, of the bottom plate to move the mounting structure on the arc extinguishing chamber and the bottom plate outwards, so that the space for accommodating the grid plates in the arc extinguishing chamber is increased, more grid plates can be accommodated to improve arc voltage, and the arc extinguishing capability of the switch is enhanced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to low voltage electrical apparatus technical field, and specifically relates to a switch with arc extinguishing chamber. BACKGROUND

[0002] Switch, especially disconnecting switch as important low voltage electrical apparatus, its realization controls to bear current to meet the management to power supply network on-off.

[0003] Generally, switch includes arc extinguishing chamber and shell, and the shell usually includes base and bottom plate, and the base and the bottom plate are spliced to form the shell.The shell has a receiving cavity inside, and the contact system of the switch is installed in the receiving cavity, and the arc extinguishing chamber is inserted into the receiving cavity from above the switch.As the development of high voltage, more grid plates are needed to form grid plate group to improve arc voltage, so as to extinguish arc.It is inevitable to need more space for grid plate setting in the arc extinguishing chamber, and the existing fixing mode of the arc extinguishing chamber cannot improve the space for grid plate setting.Therefore, a new type of fixing mode of the arc extinguishing chamber is needed, which can improve the space for grid plate setting. SUMMARY

[0004] The utility model discloses a switch with arc extinguishing chamber, which sets an installation table on the outer side of the bottom plate away from the receiving cavity to move the installation structure of the arc extinguishing chamber and the bottom plate outward, thereby increasing the space for accommodating grid plates inside the arc extinguishing chamber and facilitating the accommodation of more grid plates.

[0005] The utility model discloses a switch with arc extinguishing chamber, which sets an installation table on the outer side of the bottom plate away from the receiving cavity to move the installation structure of the arc extinguishing chamber and the bottom plate outward, thereby increasing the space for accommodating grid plates inside the arc extinguishing chamber and facilitating the accommodation of more grid plates.

[0006] In one specific embodiment of the utility model, the base includes a base part and male interval plates, the male interval plates are multiple and extend to the same side from the base part, the bottom plate includes a bottom plate part and female interval plates, the female interval plates extend to the same side from the bottom plate part, the male interval plates and the female interval plates are spliced to form the left and right side walls of the receiving cavity, the wall of the receiving cavity close to the front side of the switch is the base part, and the wall of the receiving cavity close to the back side of the switch is the bottom plate part.

[0007] In another specific embodiment of the utility model, the first screw insertion hole is vertically arranged, and the first cushion block mounting cavity is horizontally arranged.

[0008] In another specific embodiment of the utility model, the second screw insertion hole is vertically arranged, and the second cushion block mounting cavity is horizontally arranged.

[0009] In another specific embodiment of the utility model, the first screw insertion hole and the first cushion block mounting cavity are arranged in two groups on the mounting table.

[0010] In another specific embodiment of the utility model, the arc extinguishing chamber comprises a side wall, a grid and an arc extinguishing cover; the side wall comprises a male side wall and a female side wall; the grid is arranged in parallel between the male side wall and the female side wall; and the arc extinguishing cover is arranged on the top of the arc extinguishing chamber.

[0011] In another specific embodiment of the utility model, the two ends of the male side wall are provided with a first wall part and a second wall part extending towards the female side wall; the two ends of the female side wall are provided with a third wall part and a fourth wall part extending towards the male side wall; the first wall part is connected to the third wall part; and the second wall part is connected to the fourth wall part.

[0012] In another specific embodiment of the utility model, when the arc extinguishing chamber is installed in place, the first wall part and the third wall part are arranged above the base part, and the second wall part and the fourth wall part are arranged above the bottom plate part.

[0013] In another specific embodiment of the utility model, the first wall part is provided with a first half hole, and the third wall part is provided with a second half hole; the first half hole and the second half hole form a complete mounting hole; and the arc extinguishing chamber is fixed to the base through the mounting hole.

[0014] The utility model has the beneficial effects that: the mounting table is arranged on the outer side of the bottom plate away from the accommodating cavity to move the mounting structure of the arc extinguishing chamber and the bottom plate outward, thereby increasing the space for accommodating the grid in the arc extinguishing chamber, accommodating more grids to increase the arc voltage and enhance the arc extinguishing capacity of the switch. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 Part structure schematic view of the switch of the utility model;

[0016] Figure 2 Structure schematic view of the shell of the utility model;

[0017] Figure 3 Structure schematic view of the shell and arc-extinguishing chamber cooperation of the switch of the utility model;

[0018] Figure 4 Three-dimensional explosion schematic view of the arc-extinguishing chamber of the utility model;

[0019] Figure 5 Structure schematic view of the sidewall of the arc-extinguishing chamber of the utility model;

[0020] Figure 6 Structure schematic view of the arc-extinguishing cover of the arc-extinguishing chamber of the utility model.

[0021] In the drawing: 1. arc-extinguishing chamber, 11. sidewall, 111. male sidewall, 1111. first wall part, 11111. first half hole, 1112. second wall part, 112. female sidewall, 1121. third wall part, 11211. second half hole, 1122. fourth wall part, 12. grid sheet, 13. arc-extinguishing cover, 131. first screw through hole, 132. second screw through hole, 133. air hole, 134. process hole, 14. ionization elimination assembly, 15. gas production piece; 2. shell, 21. base, 211. base part, 212. male interval plate, 213. second screw exploration hole, 214. second cushion block installation cavity, 22. bottom plate, 221. bottom plate part, 222. female interval plate, 223. installation platform, 2231. first screw exploration hole, 2232. first cushion block installation cavity, 23. containing cavity; 100. screw hole; 200. installation hole. DETAILED DESCRIPTION

[0022] The utility model is described in detail below in combination with the drawings, but the description of the embodiment is not the limitation of the technical scheme, and any formal change but not essential change according to the concept of the utility model should be regarded as the protection scope of the utility model.

[0023] In the following description, the directional or positional concept of up, down, left, right, front and back involved in the description is based on the position shown in the drawing, and is only provided for the technical scheme of the utility model and simplifies the description, so it cannot be understood as the special limitation of the technical scheme provided by the utility model.

[0024] As Figure 1The switch comprises an arc extinguishing chamber 1 and a shell 2, the shell 2 comprises a base 21 and a bottom plate 22, the base 21 and the bottom plate 22 are spliced to form the shell 2. The base 21 and the bottom plate 22 are spliced to form an accommodating cavity 23 in the interior, the accommodating cavity 23 is used for accommodating the contact system of the switch. The arc extinguishing chamber 1 is inserted from the top opening of the accommodating cavity 23 and located above the contact system.

[0025] As Figure 2 、 Figure 3 The base 21 comprises a base part 211 and male interval plates 212, the male interval plates 212 are multiple and extend to the same side from the base part 211, so that multiple male inner cavities are formed on the base 21. Each male inner cavity corresponds to a group of contact systems. Similarly, the bottom plate 22 comprises a bottom plate part 221 and female interval plates 222, the female interval plates 222 extend to the same side from the bottom plate part 221, so that multiple female inner cavities are formed on the bottom plate 22. The female inner cavities are matched with the male inner cavities, specifically, one female inner cavity and one male inner cavity are spliced to form a complete accommodating cavity 23. The male interval plates 212 and the female interval plates 222 are one-to-one corresponding, the male interval plates 212 and the female interval plates 222 are spliced to form the side walls of the accommodating cavity 23.

[0026] For one accommodating cavity 23, the left and right side walls are formed by splicing the male interval plates 212 and the female interval plates 222, the wall close to the front side of the switch is the base part 211, and the wall close to the back side of the switch is the bottom plate part 221. For the switch, if the switch is two-pole, at least two accommodating cavities 23 should be provided to meet the requirements of two groups of contact systems. If the switch is three-pole, three accommodating cavities 23 should be provided to meet the requirements of three groups of contact systems. In this embodiment, a two-pole switch is used with a three-pole shell, and the middle pole is empty, that is, the middle empty pole accommodating cavity 23 does not store the contact system.

[0027] On the bottom plate 22, an installation table 223 extends towards the side away from the accommodating cavity 23. Specifically, on the opening side of the accommodating cavity 23, the bottom plate 221 has an installation table 223 protruding out of the accommodating cavity 23. The installation table 223 is used for fixing the arc-extinguishing chamber 1. Specifically, the installation table 223 has a first screw insertion hole 2231 and a first cushion block installation cavity 2232. The first screw insertion hole 2231 is in the vertical direction, and the first cushion block installation cavity 2232 is in the horizontal direction. The first cushion block installation cavity 2232 penetrates the lower part of the first screw insertion hole 2231. After a cushion block is installed in the first cushion block installation cavity 2232, a screw is inserted into the first screw insertion hole 2231 from above the arc-extinguishing chamber 1 and is screwed into the cushion block, thereby fixing the arc-extinguishing chamber 1 to the installation table 223.

[0028] On the base 211 on the opening side of the accommodating cavity 23, there is a second screw insertion hole 213 and a second cushion block installation cavity 214. The second screw insertion hole 213 is in the vertical direction, and the second cushion block installation cavity 214 is in the horizontal direction. The second cushion block installation cavity 214 penetrates the lower part of the second screw insertion hole 213. After a cushion block is installed in the second cushion block installation cavity 214, a screw is inserted into the second screw insertion hole 213 from above the arc-extinguishing chamber 1 and is screwed into the cushion block, thereby fixing the arc-extinguishing chamber 1 to the upper edge of the base 211.

[0029] In this embodiment, preferably, the first screw insertion hole 2231 and the first cushion block installation cavity 2232 are two groups, each group including a first screw insertion hole 2231 and a first cushion block installation cavity 2232 that cooperate with each other. The two groups of first screw insertion holes 2231 and first cushion block installation cavities 2232 are arranged on the installation table 223.

[0030] Preferably, the second screw insertion hole 213 and the second cushion block installation cavity 214 are one, i.e., only one group of second screw insertion hole 213 and second cushion block installation cavity 214 that cooperate with each other. The second screw insertion hole 213 and the second cushion block installation cavity 214 are located on the base 211 for the middle part of the accommodating cavity 23.

[0031] In this embodiment, each accommodating cavity 23 for installing the arc-extinguishing chamber 1 has one group of second screw insertion hole 213 and second cushion block installation cavity 214 and two groups of first screw insertion hole 2231 and first cushion block installation cavity 2232 to install one arc-extinguishing chamber 1.

[0032] As Figure 4The arc extinguishing chamber 1 comprises a side wall 11, a grid 12, an arc extinguishing cover 13, a deionization assembly 14 and a gas generating member 15. The side wall 11 comprises a male side wall 111 and a female side wall 112, which are spliced to form the side wall 11 as the left and right side shells of the arc extinguishing chamber 1.

[0033] The grid 12 is a plurality of grids, which are arranged in parallel and spaced apart between the male side wall 111 and the female side wall 112. The arc extinguishing cover 13 is located at the top of the arc extinguishing chamber 1, and the arc extinguishing cover 13 serves as the top shell of the arc extinguishing chamber 1.

[0034] The deionization assembly 14 is located between the grid 12 and the arc extinguishing cover 13, and is used for filtering arc gas.

[0035] The gas generating member 15 is a pair of members, which are located inside the arc extinguishing chamber 1 and form an arc passage between the two gas generating members 15.

[0036] As Figure 5 The male side wall 111 and the female side wall 112 are spliced and matched. The male side wall 111 has a first wall portion 1111 and a second wall portion 1112 extending towards the female side wall 112 at both ends. When the arc extinguishing chamber 1 is installed in place, the first wall portion 1111 is located above the base portion 211 of the base 21, and the second wall portion 1112 is located above the bottom plate portion 221.

[0037] The female side wall 112 has a third wall portion 1121 and a fourth wall portion 1122 extending towards the male side wall 111 at both ends. When the arc extinguishing chamber 1 is installed in place, the third wall portion 1121 is located above the base portion 211 of the base 21, and the fourth wall portion 1122 is located above the bottom plate portion 221.

[0038] The first wall portion 1111 and the third wall portion 1121 are spliced correspondingly, and the second wall portion 1112 and the fourth wall portion 1122 are spliced correspondingly.

[0039] Specifically, the first wall portion 1111 has a first half hole 11111, and the third wall portion 1121 has a second half hole 11211, and the first half hole 11111 and the second half hole 11211 form a complete mounting hole 200. The arc extinguishing chamber 1 is fixed to the base 21 through the mounting hole 200.

[0040] Specifically, the second wall portion 1112 has a screw hole 100, and the fourth wall portion 1122 also has a screw hole 100. More specifically, the second wall portion 1112 and the fourth wall portion 1122 each have only one screw hole 100. The arc-extinguishing chamber 1 is fixed to the bottom plate 22 through the screw hole 100.

[0041] As Figure 6 The structure of the arc-extinguishing cover 13 is shown in the figure. The arc-extinguishing cover 13 is usually made of thermosetting material. The arc-extinguishing cover 13 is plate-shaped, and first screw through holes 131 and second screw through holes 132 are arranged on both sides of the arc-extinguishing cover 13, i.e. on the two sides of the arc-extinguishing cover 13 corresponding to the base portion 211 and the mounting table 223. The first screw through holes 131 are used to fix the arc-extinguishing chamber 1 to the base portion 211 and the mounting table 223. The second screw through holes 132 are used to fix and connect the arc-extinguishing cover 13 and the side wall 11, specifically, the arc-extinguishing cover 13 is fixed and connected to the male side wall 111 and the female side wall 112 respectively.

[0042] The arc-extinguishing cover 13 also has a ventilation hole 133 and a process hole 134. The ventilation hole 133 allows the arc gas below to pass through the ventilation hole 133 and be discharged outward through the arc-extinguishing cover 13, and the process hole 134 is used for the processing requirement of the thermosetting material.

[0043] In the utility model, since the mounting table 223 protruding outward from the containing cavity 23 is arranged on the opening side of the bottom plate portion 221 of the containing cavity 23, the mounting table 223 is used to fix the arc-extinguishing chamber 1. This arrangement moves the fixing and connecting structure of the arc-extinguishing chamber 1 and the bottom plate 22 to the mounting table 223, so that the space for installing the grid fins 12 in the arc-extinguishing chamber 1 is enlarged, which is convenient for containing more grid fins 12 and meets the requirement of high voltage for the number of grid fins 12.

Claims

1. A switch with an arc-extinguishing chamber, comprising an arc-extinguishing chamber (1) and a housing (2), said housing (2) comprising a base (21) and a bottom plate (22), said base (21) and said bottom plate (22) being spliced to form an accommodating cavity (23) inside, said arc-extinguishing chamber (1) being inserted downward from the top opening of said accommodating cavity (23) and being fixedly connected with said base (21) and said bottom plate (22), characterized in that: An installation table (223) extends on the bottom plate (22) towards a side away from the accommodating cavity (23), and the arc extinguishing chamber (1) is fixed to the installation table (223) near the bottom plate (22). ​ 2. The switch with an arc extinguishing chamber according to claim 1, characterized in that: The base (21) comprises a base part (211) and male interval plates (212), the male interval plates (212) extend towards the same side from the base part (211); the bottom plate (22) comprises a bottom plate part (221) and female interval plates (222), the female interval plates (222) extend towards the same side from the bottom plate part (221); the male interval plates (212) and the female interval plates (222) are spliced to form left and right side walls of the accommodating cavity (23), and a wall near a front side of the switch of the accommodating cavity (23) is the base part (211), and a wall near a rear side of the switch of the accommodating cavity (23) is the bottom plate part (221).

3. The switch with an arc extinguishing chamber according to claim 1, characterized in that: The installation table (223) is provided with first screw insertion holes (2231) and first cushion block installation cavities (2232), the first screw insertion holes (2231) are in the up-down direction, the first cushion block installation cavities (2232) are in the horizontal direction, and the first cushion block installation cavities (2232) pass through lower portions of the first screw insertion holes (2231).

4. The switch with an arc extinguishing chamber according to claim 2, characterized in that: The base part (211) is provided with second screw insertion holes (213) and second cushion block installation cavities (214) on an opening side of the accommodating cavity (23), the second screw insertion holes (213) are in the up-down direction, the second cushion block installation cavities (214) are in the horizontal direction, and the second cushion block installation cavities (214) pass through lower portions of the second screw insertion holes (213).

5. The switch with arc extinguishing chamber according to claim 3, characterized in that: The first screw insertion holes (2231) and the first cushion block installation cavities (2232) are two groups, and the two groups of first screw insertion holes (2231) and first cushion block installation cavities (2232) are arranged on the installation table (223) in a spaced manner.

6. The switch with arc extinguishing chamber according to claim 2, characterized in that: The arc extinguishing chamber (1) comprises a side wall (11), a grid (12) and an arc extinguishing cover (13), the side wall (11) comprises a male side wall (111) and a female side wall (112), the grid (12) is a plurality of grids and is arranged in parallel between the male side wall (111) and the female side wall (112) in a spaced manner, and the arc extinguishing cover (13) is located at a top of the arc extinguishing chamber (1).

7. A switch with an arc extinguishing chamber according to claim 6, characterized in that: Two ends of the male side wall (111) are provided with a first wall part (1111) and a second wall part (1112) extending towards the female side wall (112), two ends of the female side wall (112) are provided with a third wall part (1121) and a fourth wall part (1122) extending towards the male side wall (111), the first wall part (1111) is spliced with the third wall part (1121), and the second wall part (1112) is spliced with the fourth wall part (1122).

8. The switch with the arc extinguishing chamber according to claim 7, characterized in that: When the arc extinguishing chamber (1) is installed in place, the first wall portion (1111) and the third wall portion (1121) are located above the base portion (211), and the second wall portion (1112) and the fourth wall portion (1122) are located above the bottom plate portion (221).

9. The switch with arc extinguishing chamber according to claim 7, characterized in that: The first wall portion (1111) has a first half hole (11111) and the third wall portion (1121) has a second half hole (11211), the first half hole (11111) and the second half hole (11211) form a complete mounting hole (200), and the arc extinguishing chamber (1) is fixed to the base (21) through the mounting hole (200).

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