Bridge contact device of low-voltage circuit breaker

Abstract

The utility model discloses a bridge contact device of a low-voltage circuit breaker, which belongs to the technical field of circuit breakers, and comprises a circuit breaker body, one side of the circuit breaker body is clamped with a contact piece body, the outer surface of the circuit breaker body is fixedly connected with a fixed plate, a clamping structure is arranged in the fixed plate, and the contact piece body is clamped with the clamping structure. One side of the contact piece body is provided with a locking structure, the locking structure is connected with a circuit breaker body, the locking structure comprises a cross plate, an auxiliary plate and a first inclined plate, and the upper part of the first inclined plate is fixedly connected with a moving rod. According to the utility model, through the arrangement of the circuit breaker body, the contact piece body, the locking structure and the cross-shaped groove, the contact head device enables the contact piece body and the circuit breaker body to realize the function of rapid assembly through the cooperation of the first inclined plate, the spring and the second inclined plate, and can be independently replaced in time when being damaged; the overall use efficiency and reliability of the circuit breaker body are guaranteed, and the breaking capacity of the circuit breaker is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to circuit breaker technical field, concretely is a kind of bridging contact device of low voltage circuit breaker. BACKGROUND

[0002] Low voltage circuit breaker is the key component for overload, short-circuit protection in distribution system, and the reliability of its contact device directly affects breaking capacity and electrical life, which is an electric appliance with both manual switch function and automatic voltage loss, undervoltage, overload and short-circuit protection.

[0003] The prior art discloses some utility model patents in the technical field of circuit breaker processing, wherein the utility model patent with publication number CN221529853U discloses a bridge type contact of drawer type frame circuit breaker and circuit breaker, characterized in that: the bridge type contact includes a mounting bracket, a plurality of contact pieces are inserted side by side into the mounting slots of the mounting bracket, the end side of the mounting bracket is provided with an elastic member, the elastic member abuts against the plurality of contact pieces to provide a restoring force for them, and the plurality of contact pieces inserted side by side into the mounting slots of the mounting bracket are separated by a limiting and separating device. By separating the contact pieces in the bridge type contact, a spacing is formed between the contact pieces in the bridge type contact, thereby improving the heat dissipation capacity of the bridge type contact. On the other hand, the use amount of contact pieces is reduced, which not only saves costs but also reduces the rocking-in force required when connecting the circuit breaker body and the drawer seat. At the same time, after the contact pieces are separated, each piece can rotate, improving the reliability of the connection between the circuit breaker body and the drawer seat.

[0004] However, the above-mentioned method has the following defects in actual use: most of the bridge contact devices and circuit breakers are integrated, and it is difficult to replace the bridge contact device in time when it is damaged for a long time, thereby affecting the overall use efficiency and reliability of the circuit breaker and reducing the breaking capacity of the circuit breaker. UTILITY MODEL CONTENTS

[0005] The utility model aims to provide a kind of bridging contact device of low voltage circuit breaker to solve the problems raised in the above background art.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of bridging contact device of low voltage circuit breaker, including circuit breaker body, the side of the circuit breaker body is clamped with contact piece body, the outer surface of the circuit breaker body is fixedly connected with fixed plate, the fixed plate is equipped with clamping structure, the side of the contact piece body is equipped with locking structure, the locking structure is connected with circuit breaker body, the locking structure includes cross plate, auxiliary plate and first inclined plate, the upper side of the first inclined plate is fixedly connected with moving rod, the moving rod is sleeved with spring, one end of the moving rod is fixedly connected with fixed disc, the side of the cross plate is fixedly connected with second inclined plate.

[0007] As a further preferred of the technical solution, the cross slot is arranged in the circuit breaker body, and the contact head body is fixedly connected in the contact sheet body.

[0008] As a further preferred of the technical solution, the cross plate is fixedly connected on one side of the contact sheet body, and the auxiliary plate is fixedly connected above the circuit breaker body.

[0009] As a further preferred of the technical solution, the first inclined plate is slidingly connected in the auxiliary plate, and the first inclined plate is overlapped with the second inclined plate.

[0010] As a further preferred of the technical solution, the moving rod is slidingly connected in the auxiliary plate, and the fixed disc is connected with the auxiliary plate through the spring.

[0011] As a further preferred of the technical solution, the clamping structure comprises a limiting plate and a sleeve plate, the limiting plate is sleeved outside the circuit breaker body, one side of the limiting plate is fixedly connected with a mounting column, the sleeve plate is fixedly connected on one side of the fixed plate, and a threaded rod is rotatably connected in the sleeve plate.

[0012] As a further preferred of the technical solution, the outer surface of the threaded rod is threadedly connected with a concave plate, the mounting column is clamped in the fixed plate, the concave plate is clamped in the mounting column, and the limiting plate is overlapped with the fixed plate.

[0013] The utility model provides a kind of bridging contact head device of low voltage circuit breaker, with the following beneficial effects:

[0014] (1) the utility model discloses a circuit breaker body, contact sheet body, locking structure and cross slot are set, second inclined plate is contacted with first inclined plate when moving, first inclined plate drives moving rod to move in auxiliary plate synchronously when being influenced by thrust, moving rod will drive spring to deform when moving, when circuit breaker body and contact sheet body are completely adhered, second inclined plate will be separated from first inclined plate, first inclined plate will be reset by spring when losing resistance, the contact head device is cooperated between first inclined plate, spring and second inclined plate, so that contact sheet body and circuit breaker body can realize the function of quick assembly, can be replaced alone in time when damage occurs, not only guarantee the overall use efficiency and reliability of circuit breaker body, and improve the breaking capacity of the circuit breaker.

[0015] (2) the utility model discloses clamping structure, and the limiting plate is slid on the surface of contact sheet body, the limiting plate is contacted with fixed plate, and the limiting plate is overlapped with one side of first inclined plate, so that clamping structure can limit the position of first inclined plate, avoid the phenomenon that first inclined plate is loosened by external force. DRAWINGS

[0016] Figure 1 It is a three-dimensional structure schematic view of the utility model;

[0017] Figure 2 It is a three-dimensional structure schematic view of the utility model's contact piece body explosion;

[0018] Figure 3 It is a three-dimensional structure schematic view of the utility model's Figure 1 It is an enlarged structure schematic view of A place in the middle;

[0019] Figure 4 It is a three-dimensional structure schematic view of the utility model's clamping structure.

[0020] In the drawing: 1, circuit breaker body; 2, contact piece body; 3, contact head body; 4, clamping structure; 401, limiting plate; 402, mounting column; 403, concave plate; 404, cover plate; 405, threaded rod; 5, locking structure; 501, cross plate; 502, auxiliary plate; 503, first inclined plate; 504, moving rod; 505, spring; 506, fixed disc; 507, second inclined plate; 6, fixed plate; 7, cross groove. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model.

[0022] The utility model provides technical schemes: as Figure 1 and Figure 4 Indicated, in the embodiment, a low-voltage circuit breaker's bridge contact head device, including circuit breaker body 1, the one side of circuit breaker body 1 is clamped with contact piece body 2, and the outer surface of circuit breaker body 1 is fixedly connected with fixed plate 6, and clamping structure 4 is equipped in fixed plate 6, and the one side of contact piece body 2 is equipped with locking structure 5, and locking structure 5 is connected with circuit breaker body 1, and locking structure 5 includes cross plate 501, auxiliary plate 502 and first inclined plate 503, and the upper of first inclined plate 503 is fixedly connected with moving rod 504, and spring 505 is sleeved with moving rod 504, and one end of moving rod 504 is fixedly connected with fixed disc 506, and the one side of cross plate 501 is fixedly connected with second inclined plate 507.

[0023] As Figure 1 and Figure 3 Indicated, the cross groove 7 is set up in circuit breaker body 1, and contact head body 3 is fixedly connected in contact piece body 2, and cross plate 501 is fixedly connected on the one side of contact piece body 2, and auxiliary plate 502 is fixedly connected on the upper of circuit breaker body 1, and first inclined plate 503 is slidingly connected in auxiliary plate 502, and first inclined plate 503 is overlapped with second inclined plate 507, and moving rod 504 is slidingly connected in auxiliary plate 502, and fixed disc 506 is connected with auxiliary plate 502 through spring 505.

[0024] By setting the spring 505, when the cross plate 501 on the left side of the contact piece body 2 slides in the cross groove 7, the second inclined plate 507 will contact the first inclined plate 503 during movement, the first inclined plate 503 drives the moving rod 504 to move synchronously in the auxiliary plate 502 under the influence of the thrust, and the moving rod 504 drives the spring 505 to deform during movement, so that the spring 505 supports the movement of the first inclined plate 503 to a certain extent, avoiding the phenomenon that the first inclined plate 503 is stuck during movement.

[0025] As shown in Figure 4 The clamping structure 4 includes a limiting plate 401 and a sleeve plate 404, the limiting plate 401 is sleeved outside the circuit breaker body 1, one side of the limiting plate 401 is fixedly connected with a mounting column 402, the sleeve plate 404 is fixedly connected to one side of the fixed plate 6, the sleeve plate 404 is rotatably connected with a threaded rod 405, the outer surface of the threaded rod 405 is threadedly connected with a concave plate 403, the mounting column 402 is clamped in the fixed plate 6, the concave plate 403 is clamped in the mounting column 402, and the limiting plate 401 is overlapped with the fixed plate 6.

[0026] By setting the threaded rod 405 and the concave plate 403, when the mounting column 402 on the left side of the limiting plate 401 is clamped into the fixed plate 6, the concave plate 403 moves on the surface of the threaded rod 405 when the threaded rod 405 is driven to rotate, and the concave plate 403 is clamped with the mounting column 402 after movement, so that the position of the limiting plate 401 can be positioned, avoiding the phenomenon that the limiting plate 401 shakes.

[0027] The utility model provides a kind of bridging contact head device of low-voltage circuit breaker, specific working principle is as follows:

[0028] When the contact head device is used in cooperation with the circuit breaker body 1, the contact piece body 2 can be clamped with the circuit breaker body 1, and the cross plate 501 on the left side of the contact piece body 2 slides in the cross groove 7, the second inclined plate 507 contacts the first inclined plate 503 during movement, the first inclined plate 503 drives the moving rod 504 to move synchronously in the auxiliary plate 502 under the influence of the thrust, and the moving rod 504 drives the spring 505 to deform during movement, when the circuit breaker body 1 is completely attached with the contact piece body 2, the second inclined plate 507 is separated from the first inclined plate 503, and the first inclined plate 503 is reset by the spring 505 when losing resistance;

[0029] Then the limiting plate 401 slides on the surface of the contact piece body 2, when the limiting plate 401 contacts with the fixed plate 6, the limiting plate 401 also overlaps with one side of the first inclined plate 503, and the mounting column 402 on the left side of the limiting plate 401 is clamped into the fixed plate 6, when the threaded rod 405 rotates, the concave plate 403 moves on the surface thereof, and after the concave plate 403 moves, the concave plate 403 is clamped with the mounting column 402.

[0030] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A bridge contact device for a low-voltage circuit breaker, comprising a circuit breaker body (1), characterized in that: A contact piece body (2) is snapped onto one side of the circuit breaker body (1). A fixing plate (6) is fixedly connected to the outer surface of the circuit breaker body (1). A snap-fit ​​structure (4) is provided inside the fixing plate (6). A locking structure (5) is provided on one side of the contact piece body (2). The locking structure (5) is connected to the circuit breaker body (1). The locking structure (5) includes a cross plate (501), an auxiliary plate (502), and a first inclined plate (503). A moving rod (504) is fixedly connected above the first inclined plate (503). A spring (505) is sleeved on the moving rod (504). A fixing disc (506) is fixedly connected to one end of the moving rod (504). A second inclined plate (507) is fixedly connected to one side of the cross plate (501).

2. The bridge contact device for a low-voltage circuit breaker according to claim 1, characterized in that: The circuit breaker body (1) has a cross groove (7) inside, and the contact head body (3) is fixedly connected inside the contact piece body (2).

3. The bridge contact device for a low-voltage circuit breaker according to claim 1, characterized in that: The cross plate (501) is fixedly connected to one side of the contact plate body (2), and the auxiliary plate (502) is fixedly connected to the top of the circuit breaker body (1).

4. The bridge contact device for a low-voltage circuit breaker according to claim 1, characterized in that: The first inclined plate (503) is slidably connected inside the auxiliary plate (502), and the first inclined plate (503) overlaps with the second inclined plate (507).

5. The bridge contact head device for a low-voltage circuit breaker according to claim 1, characterized in that: The movable rod (504) is slidably connected inside the auxiliary plate (502), and the fixed plate (506) is connected to the auxiliary plate (502) by a spring (505).

6. The bridge contact device for a low-voltage circuit breaker according to claim 1, characterized in that: The snap-fit ​​structure (4) includes a limiting plate (401) and a sleeve plate (404). The limiting plate (401) is sleeved on the outside of the circuit breaker body (1). A mounting post (402) is fixedly connected to one side of the limiting plate (401). The sleeve plate (404) is fixedly connected to one side of the fixing plate (6). A threaded rod (405) is rotatably connected inside the sleeve plate (404).

7. The bridge contact device for a low-voltage circuit breaker according to claim 6, characterized in that: The outer surface of the threaded rod (405) is threaded with a concave plate (403), the mounting post (402) is snapped into the fixing plate (6), the concave plate (403) is snapped into the mounting post (402), and the limiting plate (401) overlaps with the fixing plate (6).

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