Contactor

Abstract

The utility model discloses a contactor, which comprises a base, a plurality of loops are arranged on the base, each loop is provided with an accommodating cavity, an arc extinguish chamber is respectively introduced into a wire inlet end and a wire outlet end of each loop, the arc extinguish chambers are vertically arranged in the accommodating cavities, and the contactor also comprises a rear wall, the rear wall is located between the first side wall and the second side wall, so that the first side wall, the red steel paper sheet and the second side wall form a groove body, the plurality of first arc extinguishing grid sheets are located in the groove body, the first arc extinguishing grid sheets are close to the rear wall and embedded in the rear wall, and the second arc extinguishing grid sheets are close to the rear wall and embedded in the rear wall. And one end, far away from the rear wall, of the first arc extinguishing grid sheet is of a sawtooth structure. Compared with the prior art, due to the fact that the rear walls are arranged at the rear ends of the first side wall and the second side wall of the contactor, the arc extinguishing effect when the contactor is disconnected is improved, the electric service life of a product is prolonged, in addition, the exhaust groove is formed in the rear wall of the arc extinguishing chamber, arc cooling can be accelerated, and the arc extinguishing effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of contactors, in particular to a contactor. Background Art

[0002] In the existing technology, AC contactors are often used in the steel industry and encounter the following problems:

[0003] Electrical faults: Contactors are electrical devices controlled by electromagnetic relays and may be affected by electrical faults, such as open circuits, short circuits, etc. This may cause the contactor to malfunction or be damaged.

[0004] Overload problem: In the steel industry, contactors are often used to control high-current equipment such as motors, heaters, etc. If the load is too large, the contactor may not be able to withstand the current and overload, resulting in a shortened life of the contactor or damage.

[0005] Contactor contact wear: The working principle of the contactor is to control the circuit by closing and opening the contacts. Long-term use and frequent switching operations will cause contact wear, resulting in poor contact or unreliable contact problems, which may cause equipment failure or unstable operation.

[0006] Traditional flanging threads are unable to withstand torque and are prone to abnormalities such as thread slippage, which can lead to safety hazards such as unstable wiring.

[0007] Therefore, the utility model needs to provide a contactor with good arc extinguishing effect, capable of timely breaking the arc, reducing the contact erosion rate, and increasing the electrical life of the product. Utility Model Content

[0008] The purpose of the utility model is to provide a contactor to solve the above-mentioned problems existing in the prior art.

[0009] In order to achieve the above purpose, the technical solution adopted by the utility model is as follows:

[0010] A contactor comprises a base, wherein a plurality of circuits are arranged on the base, each circuit is provided with a receiving cavity, an arc extinguishing chamber is introduced into each of the incoming and outgoing ends of the circuit, and the arc extinguishing chamber is vertically installed in the receiving cavity;

[0011] The arc extinguishing chamber comprises a first side wall, a second side wall and a plurality of first arc extinguishing grids, wherein the first side wall and the second side wall are arranged opposite to each other, and a gap is provided between the first side wall and the second side wall, and the plurality of first arc extinguishing grids are located between the first side wall and the second side wall.

[0012] It also includes a rear wall, which is located between the first side wall and the second side wall, so that the first side wall, the rear wall and the second side wall form a slot body, the plurality of first arc-extinguishing grids are located in the slot body, the first arc-extinguishing grids are first embedded in the rear wall close to the rear wall, and the end of the first arc-extinguishing grid away from the rear wall is a serrated structure.

[0013] Furthermore, it also includes a second arc-extinguishing grid, which is close to one end of the arc-extinguishing grid sawtooth structure and is installed in the accommodating cavity of the base.

[0014] Furthermore, stepped limiting structures are provided on inner surfaces of two opposite sides of the accommodating cavity, and the limiting structures are used to limit the second arc-extinguishing grid.

[0015] Furthermore, the second arc-extinguishing grid comprises a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate and the third connecting plate are arranged opposite to each other, and both ends of the second connecting plate are respectively fixed on the third connecting plate of the first connecting plate, and the three form a U-shaped second arc-extinguishing grid.

[0016] Furthermore, the first connecting plate and the second connecting plate have the same structure and the same size.

[0017] Furthermore, the first side wall and the second side wall are arranged obliquely, and the distance between the first side wall and the second side wall close to the rear wall is smaller than the distance between the first side wall and the second side wall away from the rear wall.

[0018] Furthermore, the rear wall is provided with a plurality of exhaust grooves, and the exhaust grooves are arranged in sequence from bottom to top along the length direction of the rear wall.

[0019] Furthermore, the rear wall is provided with positioning holes corresponding to the arc-extinguishing grids.

[0020] Furthermore, the rear wall is made of red steel paper.

[0021] Furthermore, it also includes a nut, which is installed in the accommodating cavity of the incoming line end and the outgoing line end, and the nut is located at the relatively far end of the arc extinguishing chamber.

[0022] Furthermore, the nut is provided with a fixing structure on both sides close to the accommodating cavity, and the fixing structure is used to clamp the nut into the accommodating cavity.

[0023] The beneficial effects of the utility model are:

[0024] The utility model provides a rear wall at the rear ends of the first side wall and the second side wall, thereby improving the arc extinguishing effect when the circuit breaker is disconnected and increasing the electrical life of the product. In addition, an exhaust groove is provided on the rear wall of the arc extinguishing chamber, which can accelerate the cooling of the arc and increase the arc extinguishing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the arc extinguishing chamber of the utility model installed on the base;

[0026] Figure 2 It is a three-dimensional diagram of the practical base;

[0027] Figure 3 It is a structural schematic diagram of the arc extinguishing chamber of the utility model;

[0028] Figure 4 It is a structural schematic diagram of the rear wall of the utility model;

[0029] Figure 5 It is a structural diagram of the second arc-extinguishing grid of the utility model;

[0030] Figure 6 This is the complete structure of the new contactor of the utility model;

[0031] Figure 7 It is a schematic diagram of the installation structure of the static contact and the nut of the utility model.

[0032] Reference numerals:

[0033] Base 1, accommodating cavity 2, arc extinguishing chamber 3, first side wall 301, second side wall 302, first arc extinguishing grid 303, rear wall 304, exhaust groove 305, positioning hole 306, second arc extinguishing grid 4, first connecting plate 401, second connecting plate 402, third connecting plate 403, nut 5, threaded hole 501, dressing structure 502, static contact 6, screw 7. DETAILED DESCRIPTION

[0034] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation methods described here are only used to explain the utility model and are not used to limit the utility model.

[0035] Among them, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model or simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0036] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0037] The word “exemplary” is used exclusively herein to mean “serving as an example, example, or illustration.” Any embodiment described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other embodiments.

[0038] In addition, in order to better illustrate the present application, numerous specific details are given in the following specific embodiments. It should be understood by those skilled in the art that the present application can also be implemented without certain specific details. In some examples, methods, means, components and circuits well known to those skilled in the art are not described in detail in order to highlight the subject matter of the present application.

[0039] like Figures 1 to 7 As shown, a contactor comprises a base 1, on which a plurality of circuits are arranged, each of which is provided with a receiving cavity 2, and an arc extinguishing chamber 3 is introduced into the incoming end and the outgoing end of the circuit respectively, and the arc extinguishing chamber 3 is vertically installed in the receiving cavity 2;

[0040] The arc extinguishing chamber 3 includes a first side wall 301, a second side wall 302 and a plurality of first arc extinguishing grids 303. In this embodiment, the first side wall 301 and the second side wall 302 have the same structure and are equal in size. It should be noted that the first side wall 301 and the second side wall 302 are set to be rectangular in shape. In actual production, the shapes of the first side wall 301 and the second side wall 302 can be changed according to the structure and requirements of the product, and are not specifically limited. The first side wall 301 and the second side wall 302 are arranged opposite to each other, and a spacing is provided between the first side wall 301 and the second side wall 302. The plurality of first arc extinguishing grids 303 are located between the first side wall 301 and the second side wall 302, and the plurality of first arc extinguishing grids 303 are arranged from top to bottom.

[0041] The device further includes a rear wall 304, which is located between the first side wall 301 and the second side wall 302. The rear wall 304 is fixed to the first side wall 301 and the second side wall 302 by integral molding or welding, so that the first side wall 301, the rear wall 304 and the second side wall 302 form a slot body. The plurality of first arc-extinguishing grids 303 are located in the slot body, and the first arc-extinguishing grids 303 are first embedded in the rear wall 304 close to the rear wall. One end of the first arc-extinguishing grid 303 away from the rear wall 304 is a sawtooth structure. The end of the first arc-extinguishing grid 303 away from the rear wall 304 is set to a sawtooth structure, and the sawtooth structure can lengthen the arc and cool and extinguish it.

[0042] It can be known from the above method that since the rear wall is set at the rear ends of the first side wall 301 and the second side wall 302, the arc extinguishing effect when the circuit breaker is disconnected is improved and the electrical life of the product is increased. In addition, an exhaust groove 305 is provided on the rear wall 304 of the arc extinguishing chamber, which can accelerate the cooling of the arc and increase the arc extinguishing effect.

[0043] In this embodiment, the first side wall 301 and the second side wall 302 are inclined, and the distance between the first side wall 301 and the second side wall 302 and the rear wall 304 is smaller than the distance between the first side wall 301 and the second side wall 302 and the rear wall 304, so that the arc is quickly introduced into the arc extinguishing chamber through the second arc extinguishing grid 4, and the arc is quickly cut off and extinguished by the first arc extinguishing grid 303.

[0044] In addition, it should be noted that it also includes a second arc-extinguishing grid 4, which is close to one end of the sawtooth structure of the first arc-extinguishing grid 303 and is installed in the accommodating cavity 2 of the base 1. The arc introduction range is increased by the second arc-extinguishing grid 4. In order to increase the arc introduction range, in this embodiment, the length of the two side feet of the second first arc-extinguishing grid from top to bottom of the first arc-extinguishing grid 303 is longer than the length of the two side feet of the remaining first arc-extinguishing grids, so that the second arc-extinguishing grid 4 can contact the two side feet 307 of the second first arc-extinguishing grid.

[0045] In order to firmly fix the second arc-extinguishing grid 4 , stepped limiting structures are provided on inner surfaces of two opposite sides of the accommodating cavity 2 , and the second arc-extinguishing grid 4 is fixed in the accommodating cavity 2 by the limiting structures.

[0046] In addition, it should be noted that the second arc-extinguishing grid 4 includes a first connecting plate 401, a second connecting plate 402 and a third connecting plate 403, the first connecting plate 401 and the third connecting plate 403 are arranged opposite to each other, the first connecting plate 401 and the third connecting plate 403 have the same structure and the same size, and the two ends of the second connecting plate 402 are respectively fixed to the third connecting plate 403 of the first connecting plate 401 by welding or integral molding, so that the three form a U-shaped second arc-extinguishing grid 4.

[0047] In addition, it is worth noting that a plurality of exhaust grooves 305 are provided on the rear wall 304, and the exhaust grooves 305 are arranged in sequence from bottom to top along the length direction of the rear wall 304. The gas generated in the arc extinguishing chamber can be discharged through the exhaust grooves 305, thereby accelerating the breaking of the arc. In the present embodiment, the exhaust grooves 305 are in the shape of long strips, and in actual use, the shape of the exhaust grooves 305 can also be other shapes, such as: circular, oval or square, which are not limited to the specific shapes.

[0048] In order to fix a plurality of first arc-extinguishing grids 303 on the rear wall 304, the rear wall 304 is further provided with positioning holes 306 corresponding to the arc-extinguishing grids. In order to cooperate with the positioning holes 306, the first arc-extinguishing grids 303 are further provided with positioning columns at corresponding positions close to the positioning holes 306. The positioning columns are installed in the positioning holes 306 so that the first arc-extinguishing grids 303 can be firmly fixed on the rear wall 304. The rear wall 304 is made of red steel paper.

[0049] In addition, it is worth noting that it also includes a nut 5, which is installed in the accommodating cavity at the incoming and outgoing ends, and the nut 5 is located at the relatively distant end of the arc extinguishing chamber. A threaded hole 501 is provided at the center of the nut 5, and a fixing structure 502 is provided on both sides of the nut 5 close to the accommodating cavity. The fixing structure is used to clip the nut 5 into the accommodating cavity. Since the fixing structure 502 is provided on both sides of the nut 5 close to the accommodating cavity, the wiring torque can be increased to prevent the operator from loosening the wiring later due to the small wiring torque. In addition, the problem of the nut falling off during wiring is avoided, which facilitates the operator to connect the wires. The static contact 6 is installed on the base 1 and the screw 7 is tightened.

[0050] The above is only a preferred embodiment of the present invention. It should be pointed out that ordinary technicians in this technical field can make several improvements and modifications without departing from the principle of the present invention. These improvements and modifications should also be considered as the protection scope of the present invention.

Claims

1. A contactor, characterized in that: It comprises a base, on which a plurality of circuits are arranged, each of which is provided with a containing cavity, and an arc extinguishing chamber is introduced into the inlet and outlet ends of the circuit respectively, and the arc extinguishing chamber is vertically installed in the containing cavity; The arc extinguishing chamber comprises a first side wall, a second side wall and a plurality of first arc extinguishing grids, wherein the first side wall and the second side wall are arranged opposite to each other, and a gap is provided between the first side wall and the second side wall, and the plurality of first arc extinguishing grids are located between the first side wall and the second side wall. It also includes a rear wall, which is located between the first side wall and the second side wall, so that the first side wall, the rear wall and the second side wall form a slot body, the plurality of first arc-extinguishing grids are located in the slot body, the first arc-extinguishing grids are first embedded in the rear wall close to the rear wall, and the end of the first arc-extinguishing grid away from the rear wall is a serrated structure.

2. The contactor according to claim 1, characterized in that: It also includes a second arc-extinguishing grid, which is close to one end of the sawtooth structure and installed in the accommodating cavity of the base.

3. The contactor according to claim 2, characterized in that: The inner surfaces on opposite sides of the accommodating cavity are also provided with stepped limiting structures, and the limiting structures are used to limit the second arc-extinguishing grid.

4. The contactor according to claim 3, characterized in that: The second arc-extinguishing grid comprises a first connecting plate, a second connecting plate and a third connecting plate, the first connecting plate and the third connecting plate are arranged opposite to each other, two ends of the second connecting plate are respectively fixed on the third connection of the first connecting plate, and the three form a U-shaped second arc-extinguishing grid.

5. The contactor according to claim 4, characterized in that: The first connecting plate and the second connecting plate have the same structure and the same size.

6. The contactor according to claim 1, characterized in that: The first side wall and the second side wall are arranged obliquely, and the distance between the first side wall and the second side wall close to the rear wall is smaller than the distance between the first side wall and the second side wall away from the rear wall.

7. The contactor according to claim 1, characterized in that: The rear wall is also provided with a plurality of exhaust grooves, which are arranged in sequence from bottom to top along the length direction of the rear wall.

8. The contactor according to claim 7, characterized in that: The rear wall is also provided with positioning holes corresponding to the arc-extinguishing grids.

9. The contactor according to claim 1, characterized in that: The rear wall is made of red steel paper.

10. The contactor according to claim 9, characterized in that: It also includes a nut, which is installed in the accommodating cavity at the incoming and outgoing ends, and the nut is located at the relatively distant end of the arc extinguishing chamber. The nut is also provided with a fixing structure on both sides close to the accommodating cavity, and the fixing structure is used to clip the nut into the accommodating cavity.

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