Operating mechanism of 1P + N miniature circuit breaker

Abstract

The utility model relates to an operating mechanism of a 1P + N miniature circuit breaker, which comprises a handle, a connecting rod, a lock catch, a contact support and a moving contact, the lock catch is hinged on the contact support, a lock catch position is formed between the upper end of the contact support and the lock catch, one end of the connecting rod is inserted in the lock catch position, the other end of the connecting rod is connected with the handle, and the moving contact is connected at the lower end of the contact support. The upper side and the side, close to the handle, of the lock catch position are composed of lock catch edges on the lock catch, the side, away from the handle, of the lock catch position is composed of support edges on the contact support, and a trip opening capable of being opened or closed is formed above the side, away from the handle, between the lock catch edges and the support edges. A buckle spring for closing the jump buckle opening is arranged between the contact support and the buckle, the contact support is connected with a support spring for moving the upper end of the contact support towards the handle, the connecting rod connected with the handle is limited by adopting the buckle position, a jump buckle is omitted, the assembly is simplified, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to a component of a small circuit breaker, in particular to an operating mechanism of a 1P+N small circuit breaker. Background Art

[0002] The operating mechanism of a small circuit breaker is responsible for controlling the opening and closing of the circuit breaker. It is usually composed of a handle, a lock, a trip button, a connecting rod, a trip plate and other components. When a circuit fails, the trip mechanism can be automatically triggered. Existing small circuit breakers usually use a trip button to connect the connecting rod of the handle, and achieve rapid tripping through the snap connection between the trip button and the lock button. There is a certain force in the connection between the trip button and the lock button, which makes the trip button easy to pop out of the lock button, making assembly inconvenient, especially since a connecting rod needs to be inserted into the trip button. Therefore, an operating mechanism with a simple structure and easy assembly is required. Summary of the invention

[0003] In view of the above-mentioned deficiencies, the utility model provides an operating mechanism for a 1P+N miniature circuit breaker which has a simple structure and is easy to assemble.

[0004] In order to achieve the above purpose, the utility model adopts an operating mechanism of a 1P+N small circuit breaker, including a handle, a connecting rod, a lock, a contact bracket, and a moving contact. The lock is hinged on the contact bracket, and a lock position is formed between the upper end of the contact bracket and the lock. One end of the connecting rod is inserted into the lock position, and the other end of the connecting rod is connected to the handle. The moving contact is connected to the lower end of the contact bracket. The upper side of the lock position and the side close to the handle are composed of a lock edge on the lock, and the side of the lock position away from the handle is composed of a bracket edge on the contact bracket. An openable or closable jump buckle opening is formed between the lock edge and the bracket edge above the side away from the handle. A lock buckle spring for closing the jump buckle opening is arranged between the contact bracket and the lock, and a bracket spring for moving the upper end of the contact bracket toward the handle is connected to the contact bracket.

[0005] The utility model is further configured that there are two moving contacts, the two moving contacts are respectively hinged on both sides of the lower end of the contact bracket, and a moving contact spring for pressing the moving contact forward is arranged between the moving contact and the contact bracket.

[0006] The utility model is further configured to form a wide release surface in the front below the lock buckle.

[0007] The utility model is further configured that an indication surface is formed on the upper end of the lock buckle.

[0008] The utility model is further configured that an arc-shaped stopper is formed at the upper end of the moving contact, and the rear side of the stopper abuts against the contact bracket.

[0009] The utility model is further configured that a double metal pull rod is connected to one side of the lower end of the lock buckle.

[0010] The utility model is further configured to form a middle cover groove on the lower side of the release surface.

[0011] The beneficial effects of the utility model are that the locking position is used to limit the connecting rod of the connecting handle, which eliminates the need for tripping, simplifies assembly, and reduces production costs; a contact bracket is used to connect the two moving contacts to achieve synchronous action of the two moving contacts, with a simple structure and high reliability; a wide tripping surface is used to increase the connection surface with the tripper, making it convenient for the tripper to push the lock to achieve the tripping action. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a stereogram of a specific embodiment of the utility model.

[0013] Figure 2 It is a front view of a specific embodiment of the utility model.

[0014] Figure 3 It is a rear view of a specific embodiment of the utility model. DETAILED DESCRIPTION

[0015] like Figure 1 As shown, a specific embodiment of the utility model is an operating mechanism of a 1P+N small circuit breaker, comprising a handle 1, a connecting rod 2, a lock 3, a contact bracket 4, and a moving contact 5. The lock 3 is hinged on the contact bracket 4, and a lock position 6 is formed between the upper end of the contact bracket 4 and the lock 3. An indicating surface 31 is formed on the upper end of the lock 3. One end of the connecting rod 2 is inserted into the lock position 6, and the other end of the connecting rod 2 is connected to the handle 1. There are two moving contacts 5, and the two moving contacts 5 are respectively hinged on both sides of the lower end of the contact bracket 4. A moving contact torsion spring 51 for pressing the moving contact 5 forward is arranged between the moving contact 5 and the contact bracket 4. An arc-shaped stopper 52 is formed on the upper end of the moving contact 5, and the rear side of the stopper 52 is against the contact bracket 4. A double metal pull rod 7 is connected to one side of the lower end of the lock 3. The upper side of the lock position 6 and the side close to the handle 1 are composed of a lock edge 36 on the lock 3, and the side of the lock position 6 away from the handle 1 is composed of a bracket edge 46 on the contact bracket 4. A jump-snap opening 61 that can be opened or closed is formed between the lock edge 36 and the bracket edge 46 above the side away from the handle 1. A lock spring 34 for closing the jump-snap opening 61 is arranged between the contact bracket 4 and the lock 3. A bracket spring 41 for moving the upper end of the contact bracket 4 toward the handle 1 is connected to the contact bracket 4. A wide release surface 32 is formed in front of the bottom of the lock 3, and a middle cover groove 33 is formed in the middle of the lower side of the release surface 32.

[0016] In the above specific embodiment, the side direction where the handle is located is positioned as the front, and the rear is the opposite direction.

[0017] The preferred embodiments of the present invention in the above specific embodiments and other obvious changes are also within the protection scope of the claims.

Claims

1. An operating mechanism of a 1P+N miniature circuit breaker, comprising a handle, a connecting rod, a lock, a contact bracket, and a moving contact, wherein the lock is hinged on the contact bracket, a lock position is formed between the upper end of the contact bracket and the lock, one end of the connecting rod is inserted into the lock position, the other end of the connecting rod is connected to the handle, and the moving contact is connected to the lower end of the contact bracket, characterized in that: The upper side of the lock position and the side close to the handle are composed of a lock edge on the lock, and the side of the lock position away from the handle is composed of a bracket edge on the contact bracket, and a jump-lock opening that can be opened or closed is formed between the lock edge and the bracket edge above the side away from the handle, and a lock spring for closing the jump-lock opening is arranged between the contact bracket and the lock, and a bracket spring for moving the upper end of the contact bracket toward the handle is connected to the contact bracket.

2. The operating mechanism of the 1P+N miniature circuit breaker according to claim 1 is characterized in that: There are two moving contacts, which are respectively hinged on both sides of the lower end of the contact bracket, and a moving contact spring for pressing the moving contact forward is arranged between the moving contact and the contact bracket.

3. The operating mechanism of the 1P+N miniature circuit breaker according to claim 2 is characterized in that: A wide release surface is formed in the front below the lock buckle.

4. The operating mechanism of the 1P+N miniature circuit breaker according to claim 1, 2 or 3, characterized in that: The upper end of the lock buckle forms an indication surface.

5. The operating mechanism of the 1P+N miniature circuit breaker according to claim 2 or 3, characterized in that: An arc-shaped stopper is formed at the upper end of the moving contact, and the rear side of the stopper abuts against the contact support.

6. The operating mechanism of the 1P+N miniature circuit breaker according to claim 1, 2 or 3, characterized in that: A double gold pull rod is connected to one side of the lower end of the lock buckle.

7. The operating mechanism of the 1P+N miniature circuit breaker according to claim 3, characterized in that: A middle cover groove is formed on the lower side of the release surface.

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