Moving contact system

Abstract

A moving contact system comprises a contact linkage seat, linkage shafts are arranged on the left side and the right side of the contact linkage seat, linkage arc-shaped holes are formed in the positions, corresponding to the linkage shafts, of one end side of a moving contact assembly on the corresponding side, and the linkage shafts are located in the linkage arc-shaped holes. And the moving contact assembly on the corresponding side is rotatably mounted on the mounting connecting shaft on the corresponding side. The contact linkage seat can drive the moving contact assembly to rotate around the installation connecting shaft on the corresponding side in the process of moving up and down in the shell, and the moving contact on the corresponding side can be in contact with and separated from the static contact on the corresponding side in the rotation process so as to realize the on-off of the circuit breaker, thereby simplifying the installation difficulty of the product. And the reliability and the stability of motion transmission are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of low-voltage electrical appliances, and specifically relates to a moving contact system. Background Art

[0002] In the prior art, the circuit breakers originally used for AC systems cannot be used for DC systems, or can be used for DC systems after being improved, but the existing circuit breakers for DC systems cannot meet the requirements of fast disconnection of existing DC power systems. Even if there are some double-breakpoint circuit breakers that can be used for DC systems, they adopt a rotary structure, that is, two different moving contacts are installed on the same rotating shaft, and the rotating shaft drives the moving contact to contact the static contact assembly during the rotation process, thereby achieving the purpose of double breakpoints. This rotary double-breakpoint circuit breaker is large in size, has a complex motion transmission structure, is difficult to assemble, and has poor reliability. Utility Model Content

[0003] The purpose of the utility model is to provide a moving contact system to address the defects of the circuit breaker used in the DC power system, such as complex motion transmission structure, difficult assembly and poor reliability. The contact linkage seat can drive the moving contact on the corresponding side to rotate through the driving rod on the corresponding side during the up and down movement in the shell. The moving contact on the corresponding side is rotatably installed on the shell. During the rotation of the moving contact on the corresponding side, it can contact and separate with the static contact on the corresponding side to realize the on and off of the circuit breaker, which simplifies the installation difficulty of the product and improves the reliability and stability of motion transmission.

[0004] Technical Solution

[0005] In order to achieve the above technical objectives, the utility model provides a moving contact system, which includes a contact linkage seat, characterized in that: linkage shafts are arranged on the left and right sides of the contact linkage seat, and a linkage arc hole is arranged on one end side of the moving contact assembly on the corresponding side corresponding to the linkage shaft, the linkage shaft is located in the linkage arc hole, and the moving contact assembly on the corresponding side can be rotatably mounted on the mounting connection shaft on the corresponding side.

[0006] In one embodiment, the mounting connection shafts on the corresponding sides are fixedly mounted on the corresponding sides of the housing.

[0007] In one embodiment, the moving contact assembly on the corresponding side includes a moving contact seat and a moving contact, and the moving contact seat and the moving contact on the corresponding side are integrated. A linkage arc hole is provided on one end side of the moving contact seat corresponding to the linkage shaft, and the connection between the moving contact seat and the moving contact can be rotatably mounted on the mounting connection shaft on the corresponding side.

[0008] In one of the embodiments, one end of the opening acceleration spring abuts against the upper end surface of the contact linkage seat, and the other end abuts against the housing.

[0009] In one of the embodiments, one end of the lower connecting rod is connected to the mechanism cantilever, and the other end is mounted on the contact linkage seat.

[0010] In one embodiment, the opening acceleration spring is a compression spring.

[0011] In one embodiment, the arc generated by the separation of the moving contact and the corresponding stationary contact is extinguished by the corresponding arc extinguishing chamber in the housing.

[0012] In one of the embodiments, the lower end of the corresponding static contact is fixedly connected to one end of the corresponding arc-striking plate, and the other end of the corresponding arc-striking plate extends to one side of the corresponding arc-extinguishing chamber.

[0013] Beneficial Effects

[0014] The utility model provides a moving contact system, which includes a contact linkage seat, a linkage shaft is arranged on the left and right sides of the contact linkage seat, a linkage arc hole is arranged on one end side of the moving contact assembly on the corresponding side at a position corresponding to the linkage shaft, the linkage shaft is located in the linkage arc hole, and the moving contact assembly on the corresponding side can be rotatably mounted on the installation connection shaft on the corresponding side. The contact linkage seat can drive the moving contact assembly to rotate around the installation connection shaft on the corresponding side during the up and down movement in the housing, and the moving contact on the corresponding side can contact and separate with the static contact on the corresponding side during the rotation process to realize the on and off of the circuit breaker, simplifying the installation difficulty of the product and improving the reliability and stability of motion transmission. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0016] Attached Figure 1 This is a schematic diagram of the double breakpoint moving contact system in Example 1 of the utility model. Figure 1 .

[0017] Attached Figure 2 This is a schematic diagram of the double breakpoint moving contact system in Example 1 of the utility model. Figure 2 .

[0018] Attached Figure 3 It is a three-dimensional schematic diagram of a double-breakpoint moving contact system in an embodiment of the utility model.

[0019] Attached Figure 4 It is a structural schematic diagram of a circuit breaker in an open state in an embodiment of the utility model.

[0020] Attached Figure 5 It is a structural schematic diagram of a circuit breaker in a closed state in an embodiment of the utility model. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0022] It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it may be directly on the other component or there may also be a central component. When a component is considered to be "connected to" another component, it may be directly connected to the other component or there may be a central component at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used in the specification of this application are for illustrative purposes only and do not represent the only implementation method.

[0023] 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 at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0024] In the present application, unless otherwise clearly specified and limited, a first feature being “above” or “below” a second feature may mean that the first feature is directly in contact with the second feature, or the first feature and the second feature are indirectly in contact through an intermediate medium. Moreover, a first feature being “above”, “above” or “above” a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being “below”, “below” or “below” a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] Unless otherwise defined, all technical and scientific terms used in the specification of this application have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application. The term "and / or" used in the specification of this application includes any and all combinations of one or more related listed items.

[0026] Example

[0027] As attached Figure 1 , 2 and 3, the present embodiment provides a moving contact system, which includes a contact linkage seat 1, characterized in that: linkage shafts 2, 2' are provided on the left and right sides of the contact linkage seat 1, and linkage arc holes 301, 301' are provided on one end side of the moving contact assembly a on the corresponding side corresponding to the linkage shafts 2, 2', and the linkage shafts 2, 2' are located in the linkage arc holes 301, 301', and the moving contact assembly a on the corresponding side can be rotatably mounted on the mounting connection shafts 4, 4' on the corresponding side. The mounting connection shafts 4, 4' on the corresponding side are fixedly mounted on the corresponding side of the housing 6. The moving contact assembly a on the corresponding side includes a moving contact seat 3, 3' and a moving contact 5, 5', and the moving contact seat 3, 3' and the moving contact 5, 5' on the corresponding side are integrated. In this embodiment, the moving contact seat 3, 3' and the moving contact 5, 5' on the corresponding side are hot-riveted into an integrated form. A linkage arc hole 301, 301' is provided on one end side of the moving contact seat 3, 3' corresponding to the linkage shaft 2, 2', and the connection between the moving contact seat 3, 3' and the moving contact 5, 5' can be rotatably mounted on the mounting connection shaft 4, 4' on the corresponding side. One end of the opening acceleration spring 7 abuts against the upper end surface of the contact linkage seat 1, and the other end abuts against the housing 6. One end of the lower connecting rod 8 is connected to the mechanism cantilever 9, and the other end is mounted on the contact linkage seat 1. The opening acceleration spring 7 is a compression spring.

[0028] When the contact linkage seat 1 moves up and down in the housing 6 driven by the mechanism cantilever 9 through the lower connecting rod 8, the linkage shafts 2, 2' arranged on the left and right sides of the contact linkage seat 1 apply driving force to the corresponding linkage arc holes 301, 301', thereby driving the movable contact assembly a on the corresponding side to rotate around the corresponding mounting connecting shafts 4, 4'. During the rotation process, the movable contacts 5, 5' on the corresponding side can form a snap-on contact with the corresponding static contacts 10, 10' to connect the circuit breaker. Figure 5 As shown, on the contrary, if the corresponding moving contacts 5, 5' are separated from the corresponding stationary contacts 10, 10' during the rotation process, the circuit breaker is disconnected as shown in the attached figure. Figure 4 As shown. The arc generated by the separation of the moving contact 5, 5' and the corresponding static contact 10, 10' is extinguished by the corresponding arc extinguishing chamber in the housing 6. The lower end of the corresponding static contact 10, 10' is fixedly connected to one end of the corresponding arc-striking plate 11, 11', and the other end of the corresponding arc-striking plate 11, 11' extends to one side of the corresponding arc-striking chamber, further accelerating the speed of the arc entering the corresponding arc-striking chamber. In this embodiment, the corresponding static contact 10, 10' is L-shaped, and a static silver point is installed on the side of the corresponding static contact 10, 10' opposite to the corresponding moving contact 5, 5'. The lower end of the static contact 10, 10' on the corresponding side is welded and fixedly connected to one end of the arc-striking plate 11, 11' on the corresponding side.

[0029] The utility model provides a moving contact system, in which the contact linkage seat can drive the moving contact assembly a to rotate around the installation connection shaft 4, 4' on the corresponding side during the up and down movement in the shell, and the moving contact on the corresponding side can contact and separate with the static contact on the corresponding side during the rotation process to realize the on and off of the circuit breaker, simplifying the installation difficulty of the product and improving the reliability and stability of motion transmission.

[0030] The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0031] The above-mentioned embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the present application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the present application shall be subject to the attached claims.

Claims

1. A moving contact system, comprising a contact linkage seat (1), characterized in that: The contact linkage seat (1) is provided with linkage shafts (2, 2') on both sides thereof, and a linkage arc hole (301, 301') is provided on one end side of the movable contact assembly (a) on the corresponding side at a position corresponding to the linkage shaft (2, 2'), the linkage shaft (2, 2') is located in the linkage arc hole (301, 301'), and the movable contact assembly (a) on the corresponding side is rotatably mounted on the mounting connection shaft (4, 4') on the corresponding side.

2. A moving contact system according to claim 1, characterized in that: The mounting connection shafts (4, 4') on the corresponding sides are fixedly mounted on the corresponding sides of the housing (6).

3. A moving contact system according to claim 2, characterized in that: The movable contact assembly (a) on the corresponding side comprises a movable contact seat (3, 3') and a movable contact (5, 5'); the movable contact seat (3, 3') and the movable contact (5, 5') on the corresponding side are integrated; a linkage arc hole (301, 301') is provided at a position corresponding to the linkage shaft (2, 2') on one end side of the movable contact seat (3, 3'); and a connection between the movable contact seat (3, 3') and the movable contact (5, 5') is rotatably mounted on the mounting connection shaft (4, 4') on the corresponding side.

4. A moving contact system according to claim 1, characterized in that: One end of the opening acceleration spring (7) abuts against the upper end surface of the contact linkage seat (1), and the other end abuts against the housing (6).

5. A moving contact system according to claim 1, characterized in that: One end of the lower connecting rod (8) is connected to the mechanism cantilever (9), and the other end is mounted on the contact linkage seat (1).

6. A moving contact system according to claim 4, characterized in that: The brake opening acceleration spring (7) is a compression spring.

7. A moving contact system according to claim 1, characterized in that: The electric arc generated by the separation of the moving contact (5, 5') and the corresponding stationary contact (10, 10') is extinguished by the corresponding arc extinguishing chamber in the housing (6).

8. A moving contact system according to claim 1, characterized in that: The lower end of the corresponding static contact (10, 10') is fixedly connected to one end of the corresponding arc-striking plate (11, 11'), and the other end of the corresponding arc-striking plate (11, 11') extends to one side of the corresponding arc-extinguishing chamber.

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