Moving contact blade for circuit breaker

Abstract

The moving contact blade comprises a blade body, the bottom of the side wall of the blade body is provided with a hinge joint, the hinge joint is of a spherical surface structure, the side wall of the blade body is provided with a first connecting hole, the first connecting hole penetrates through the middle of the hinge joint, a bolt is arranged in the first connecting hole, and the first connecting hole is connected with the hinge joint. According to the utility model, the bolt passes through the first connecting hole to connect the blade body with an external part, the bolt passes through the two second connecting holes to lock the blade body and an external adjusting part together, and the adjusting part adjusts the blade body to rotate to adjust the opening and closing of a circuit breaker. The buffer hole and the cutting groove are formed in the blade body to enhance the elasticity of the top of the blade body, so that the two conductive contacts have high elasticity, the conductive contacts can be tightly attached to a static contact of the circuit breaker, the contact area is increased, and the conductivity is stable and reliable.

Description

Technical Field

[0001] This utility model relates to the field of circuit breaker technology, and in particular to a moving contact blade for a circuit breaker. Background Technology

[0002] Under normal circumstances, the knife switch in the circuit breaker's knife switch structure should be used in conjunction with the circuit breaker and operated strictly according to the regulations. That is, when power is cut off, the circuit breaker should be opened first, and then the knife switch should be opened; when power is restored, the knife switch should be closed first, and then the circuit breaker should be closed.

[0003] However, in the existing technology, the contact clamping effect between the moving contact blade and the stationary contact is not good, which can easily lead to poor contact or no contact between the moving contact and the stationary contact, affecting the use of the circuit breaker.

[0004] Therefore, it is necessary to provide a moving contact blade for a circuit breaker to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide a moving contact blade for a circuit breaker to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a moving contact blade for a circuit breaker, comprising a blade body, a hinge joint provided at the bottom of the side wall of the blade body, the hinge joint having a spherical surface structure, a first connecting hole provided in the side wall of the blade body, the first connecting hole penetrating the middle of the hinge joint, a bolt provided in the first connecting hole, a washer provided between the bolt and the side wall of the blade body, the other end of the bolt extending through the first connecting hole to the outside of the hinge joint, a nut threadedly connected to the end of the bolt extending to the outside of the hinge joint, the bolt and nut engaging to hinge the blade body and the hinge joint to an external component, two conductive contacts provided at the top of the side wall of the blade body, two second connecting holes provided in the middle of the side wall of the blade body, bolts provided in both second connecting holes, one end of each bolt extending through the two second connecting holes to the outside, the two bolts locking the blade body to an external adjusting component.

[0007] As a preferred embodiment of this utility model, a cutting groove is provided on the top surface of the blade body, and a buffer hole is provided on the side wall of the blade body, with the lower end of the cutting groove communicating with the buffer hole.

[0008] As a preferred embodiment of this utility model, the groove structure is a trapezoidal structure that is wider at the top and narrower at the bottom, and the two conductive contacts are symmetrically distributed about the groove.

[0009] As a preferred embodiment of this utility model, the two second connecting holes are located between the first connecting hole and the buffer hole, and the center of the first connecting hole, the center of the two second connecting holes and the center of the buffer hole are on the same straight line.

[0010] As a preferred embodiment of this utility model, the first connecting hole, the two second connecting holes, and the buffer hole are all provided with second rounded corners at both ends.

[0011] As a preferred embodiment of this utility model, the two conductive contacts are square in shape.

[0012] As a preferred technical solution of this utility model, the edges of both sides of the blade body are provided with a first rounded corner.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This utility model discloses a moving contact blade for a circuit breaker. The blade body features a hinge joint on its side wall that connects to an external component. Bolts pass through a first connecting hole to connect the blade body to the external component, achieving the hinge joint. Bolts pass through two second connecting holes to lock the blade body to an external adjusting component. The adjusting component controls the rotation of the blade body, which rotates around the hinge joint, causing the conductive contacts to engage or disengage with the stationary contacts, thereby adjusting the circuit breaker's opening and closing. Buffer holes and grooves are provided on the blade body to enhance the elasticity of the blade's top, ensuring strong elasticity of the two conductive contacts. This facilitates a tight fit between the conductive contacts and the circuit breaker's stationary contacts, increasing the contact area and ensuring stable and reliable conductivity. Attached Figure Description

[0015] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0016] Figure 1 This is a front view of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a three-dimensional schematic diagram of the overall structure of this utility model;

[0019] Figure 4 This is an isometric view of the overall structure of this utility model.

[0020] In the figure: 1. Blade body; 11. Hinge joint; 12. Conductive contact; 13. First connecting hole; 14. Second connecting hole; 15. Buffer hole; 16. Groove; 17. First fillet; 18. Second fillet. Detailed Implementation

[0021] The embodiments of this utility model will now be described with reference to the accompanying drawings. In this process, to ensure clarity and convenience, we may exaggerate the width of lines or the size of constituent elements in the drawings.

[0022] Furthermore, the terms used below are defined based on the functions of this utility model and may vary depending on the user's or operator's intent or convention. Therefore, these terms are defined based on the entire contents of this specification.

[0023] like Figures 1 to 4 As shown, a moving contact blade for a circuit breaker includes a blade body 1. A hinge joint 11 is provided at the bottom of the side wall of the blade body 1. The hinge joint 11 has a spherical surface structure. A first connecting hole 13 is provided on the side wall of the blade body 1. The first connecting hole 13 penetrates the middle of the hinge joint 11. A bolt is provided in the first connecting hole 13. A washer is provided between the bolt and the side wall of the blade body 1. The other end of the bolt extends through the first connecting hole 13 to the outside of the hinge joint 11. A nut is threaded to the end of the bolt extending to the outside of the hinge joint 11. The blade body 1 and the hinge joint 11 are hinged together with the external component by the bolt and the nut. The blade body 1 rotates in contact with the external component through the hinge joint 11. The edges of both sides of the blade body 1 are provided with a first rounded corner 17 to prevent burrs on the edge of the blade body 1 from scratching the user and to ensure safety.

[0024] Two conductive contacts 12 are provided on the top side wall of the blade body 1. The two conductive contacts 12 are square in shape. A groove 16 is formed on the top surface of the blade body 1. A buffer hole 15 is formed on the side wall of the blade body 1. The lower end of the groove 16 is connected to the buffer hole 15. The groove 16 is a trapezoidal structure that is wider at the top and narrower at the bottom. The two conductive contacts 12 are symmetrically distributed about the groove 16. The setting of the buffer hole 15 and the groove 16 enhances the elasticity of the top of the blade body 1, thereby ensuring that the two conductive contacts 12 have strong elasticity, so that the conductive contacts 12 can fit tightly with the stationary contacts of the circuit breaker, increasing the contact area and making its conductivity stable and reliable.

[0025] Two second connecting holes 14 are provided in the middle of the side wall of the blade body 1. The two second connecting holes 14 are located between the first connecting hole 13 and the buffer hole 15. The center of the first connecting hole 13, the center of the two second connecting holes 14 and the center of the buffer hole 15 are on the same straight line. The two ends of the first connecting hole 13, the two second connecting holes 14 and the buffer hole 15 are provided with second rounded corners 18 to facilitate the passage of locking components. Bolts are provided in the two second connecting holes 14. One end of each bolt passes through the two second connecting holes 14 and extends to the outside. The blade body 1 is locked together with the external adjustment component by the two bolts. The blade body 1 is rotated by adjusting the adjustment component to make the conductive contact 12 engage or disengage with the stationary contact, thereby adjusting the opening and closing of the circuit breaker.

[0026] The specific implementation method is as follows: a hinge joint 11 is provided on the side wall of the blade body 1 to be hinged to the external component. The blade body 1 is connected to the external component by bolts passing through the first connecting hole 13. The hinge joint 11 is fitted to the external component to achieve the hinge. The blade body 1 is locked together with the external adjustment component by bolts passing through the two second connecting holes 14. The blade body 1 is rotated by the adjustment component. The blade body 1 rotates around the hinge joint 11 as the center, so that the conductive contact 12 is in contact with or disconnected from the stationary contact, thereby adjusting the opening and closing of the circuit breaker. Buffer holes 15 and grooves 16 are opened on the blade body 1 to enhance the elasticity of the top of the blade body 1, thereby ensuring that the two conductive contacts 12 have strong elasticity, so that the conductive contacts 12 are tightly fitted with the stationary contact of the circuit breaker, increasing the contact area and making its conductivity stable and reliable.

[0027] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A moving contact blade for a circuit breaker, characterized by: The utility model provides a cutting blade body (1), the bottom of cutting blade body (1) side wall is provided with articulated joint (11), articulated joint (11) structure is spherical face structure, cutting blade body (1) side wall is seted up with first connecting hole (13), first connecting hole (13) penetrates the middle part of articulated joint (11), be provided with bolt in first connecting hole (13), be provided with gasket between bolt and cutting blade body (1) side wall, the other end of bolt extends to articulated joint (11) outside through first connecting hole (13), the one end of bolt extending to articulated joint (11) outside is connected with nut, bolt and nut cooperation will cutting blade body (1) and articulated joint (11) with outside component articulate together, cutting blade body (1) side wall top is provided with two electrically conductive contact (12), cutting blade body (1) side wall middle position is seted up with two second connecting hole (14), two second connecting hole (14) are provided with bolt in, two bolt one end respectively passes through two second connecting hole (14) and extends to outside, two bolt will cutting blade body (1) with outside adjusting component lock together.

2. The movable contact blade for a circuit breaker of claim 1, wherein: The surface top of cutting blade body (1) is provided with a cutting groove (16), and the side wall of cutting blade body (1) is provided with a buffer hole (15), and the lower end of cutting groove (16) is communicated with buffer hole (15).

3. The movable contact blade for a circuit breaker of claim 2, wherein: The cutting groove (16) is in the shape of a trapezoid with the top being wider than the bottom, and the two electrically conductive contacts (12) are symmetrically distributed about the cutting groove (16).

4. The movable contact blade for a circuit breaker of claim 2, wherein: The two second connecting holes (14) are located between the first connecting hole (13) and the buffer hole (15), and the centers of the first connecting hole (13), the two second connecting holes (14) and the buffer hole (15) are located on the same straight line.

5. The movable contact blade for a circuit breaker of claim 3, wherein: The two ends of the first connecting hole (13), the two second connecting holes (14) and the buffer hole (15) are provided with second round corners (18).

6. The movable contact blade for a circuit breaker of claim 1, wherein: The two electrically conductive contacts (12) are in the shape of a square.

7. The movable contact blade for a circuit breaker of claim 1, wherein: The edges of the two side walls of the cutting blade body (1) are provided with first round corners (17). The two electrically conductive contacts (12) are in the shape of a square.

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