Circuit breaker energy storage lever limiting piece and circuit breaker

Abstract

The utility model discloses a breaker energy storage lever limiting member and a breaker, comprising a limiting shaft which is arranged opposite to an energy storage lever of the breaker, and the limiting shaft is provided with an elastic body which is used for generating energy absorption buffer on the impact effect of the energy storage lever. According to the utility model, the elastic body with energy absorption and buffering functions is arranged on the limiting shaft, so that the energy storage lever firstly impacts the elastic body in the closing process of the circuit breaker, and the elastic deformation of the elastic body absorbs the impact energy, thereby effectively reducing the instant impact force of the energy storage lever on the limiting shaft, and being beneficial to prolonging the service life of the limiting shaft.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breakers, in particular to a circuit breaker energy storage lever limiting component and a circuit breaker. Background Art

[0002] During the closing process of the existing frame circuit breaker, the energy storage spring is released to push the energy storage lever to rotate clockwise. Finally, the energy storage lever contacts the limit shaft of the operating mechanism for limiting, completing the spring energy release process when closing. However, since the energy storage spring has a large energy, when the energy storage lever collides with the limit shaft at high speed for limiting, the instantaneous impact force on the limit shaft is large, which can easily cause the limit shaft to deform, thereby creating the risk of failure of the limiting action. Utility Model Content

[0003] In view of the shortcomings of the existing technology, the present invention provides a circuit breaker energy storage lever limiter, which mainly solves the technical problem that the limit shaft of the existing circuit breaker is easily deformed when subjected to the high-speed impact of the energy storage lever, thereby causing the limit function to fail.

[0004] To achieve the above-mentioned purpose, the present invention is realized through the following technical solutions:

[0005] A circuit breaker energy storage lever limiter comprises a limit shaft arranged opposite to the circuit breaker energy storage lever, wherein the limit shaft is provided with an elastic body for absorbing and buffering the impact of the energy storage lever.

[0006] Furthermore, the elastic body is a circular sleeve structure and is elastically sleeved on the limiting shaft.

[0007] Furthermore, a main body portion and a step rod portion are formed on the limiting shaft, and the elastic body is adaptively sleeved on the step rod portion.

[0008] Furthermore, after the elastic body is sleeved into place on the stepped rod portion, the outer wall surface of the elastic body is flush with the surface of the main body portion.

[0009] Furthermore, a step rod portion is formed at each end of the main body, and an elastic body is adaptively sleeved on each of the two step rod portions. The two elastic bodies are configured to correspond to the two collision action parts of the energy storage lever.

[0010] Furthermore, the elastomer is polyurethane (PU) elastomer.

[0011] Based on the same inventive concept, the present invention also provides a circuit breaker, comprising any one of the above-mentioned circuit breaker energy storage lever limiters.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] In the circuit breaker energy storage lever limiter and circuit breaker described in the utility model, an elastic body with energy absorption and buffering function is provided on the limit shaft, so that during the closing process of the circuit breaker, its energy storage lever will first hit the elastic body, and the elastic deformation of the elastic body will absorb the impact energy, thereby effectively reducing the instantaneous impact force of the energy storage lever on the limit shaft, which is beneficial to prolonging its service life. Then, the limit shaft itself will produce a limiting effect on the energy storage lever 1. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural diagram of an embodiment of the present utility model.

[0015] Figure 2 It is a schematic diagram of the exploded structure of an embodiment of the present utility model.

[0016] Description of labels:

[0017] 1. Energy storage lever, 2. Limiting shaft, 3. Elastic body, 21. Main body, 22. Step rod. DETAILED DESCRIPTION

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they cannot be understood as limitations on the present invention.

[0020] Please refer to the attached Figure 1 , Attachment Figure 2 One embodiment of the utility model provides a circuit breaker energy storage lever limiter, comprising a limit shaft 2 arranged opposite to the energy storage lever 1 of the circuit breaker, and an elastic body 3 is provided on the limit shaft 2 for generating energy absorption and buffering for the impact of the energy storage lever 1. It can be understood that in this embodiment, by providing the elastic body 3 with energy absorption and buffering function on the limit shaft 2, during the closing process of the circuit breaker, the energy storage lever 1 will first collide with the elastic body 3, and the elastic deformation of the elastic body 3 will absorb the impact energy, thereby effectively reducing the instantaneous impact force of the energy storage lever 1 on the limit shaft 2, which is beneficial to prolonging its service life. Afterwards, the limit shaft 2 itself will generate a limiting effect on the energy storage lever 1, so that the energy storage lever 1 remains in the closed state position.

[0021] Please refer to the attached Figure 1 , Attachment Figure 2In one preferred embodiment, the elastic body 3 is a circular sleeve structure and is elastically sleeved on the limiting shaft 2. In this embodiment, by configuring the elastic body 3 as a circular sleeve structure, the assembly of the elastic body 3 and the limiting shaft 2 is simple, convenient and efficient, which helps to reduce the difficulty of the assembly operation and improve the assembly efficiency.

[0022] Please refer to the attached Figure 1 , Attachment Figure 2 In one preferred embodiment, a main body 21 and a stepped rod 22 are formed on the limiting shaft 2, and the elastic body 3 is adaptively sleeved on the stepped rod 22. After the elastic body 3 is sleeved into place on the stepped rod 22, the outer wall surface of the elastic body 3 is flush with the surface of the main body 21. In this embodiment, by configuring the outer wall surface of the elastic body 3 to be flush with the surface of the main body 21, on the one hand, the buffering and energy-absorbing effect of the elastic body 3 is effectively utilized to absorb the instantaneous impact energy of the energy storage lever 1 on the limiting shaft 2, and on the other hand, the limiting effect of the limiting shaft 2 on the energy storage lever 1 is basically unaffected.

[0023] Please refer to the attached Figure 1 , Attachment Figure 2 In one preferred embodiment, a stepped rod portion 22 is formed at each end of the main body 21. An elastomer 3 is adaptively mounted on each of the stepped rod portions 22. The two elastomers 3 are configured to correspond to the two collision-affecting portions of the energy storage lever 1. The elastomer 3 is a polyurethane elastomer. However, those skilled in the art will appreciate that in other embodiments, the elastomer 3 may be made of other elastic materials with the same or similar properties as the polyurethane elastomer. The embodiment is not limited to the specific embodiment disclosed in this embodiment, and those skilled in the art may make specific arrangements based on their specific needs.

[0024] Please refer to the attached Figure 1 , Attachment Figure 2 An embodiment of the present invention further provides a circuit breaker, comprising the circuit breaker energy storage lever limiter of any of the above embodiments.

[0025] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate from the spirit and scope of the technical solutions of the embodiments of the present invention. Therefore, all other embodiments obtained by those skilled in the art without creative work fall within the scope of protection of the present invention.

Claims

1. A circuit breaker energy storage lever limiter, comprising a limit shaft (2) arranged opposite to the circuit breaker energy storage lever (1), characterized in that: An elastic body (3) for generating energy absorption and buffering for the impact of the energy storage lever (1) is provided on the limiting shaft (2).

2. The circuit breaker energy storage lever limiter according to claim 1, characterized in that: The elastic body (3) is a circular ring sleeve structure and is elastically sleeved on the limiting shaft (2).

3. The circuit breaker energy storage lever limiter according to claim 2, characterized in that: A main body portion (21) and a step rod portion (22) are formed on the limiting shaft (2), and the elastic body (3) is adaptively sleeved on the step rod portion (22).

4. The circuit breaker energy storage lever limiter according to claim 3, characterized in that: After the elastic body (3) is sleeved into place on the stepped rod portion (22), the outer wall surface of the elastic body (3) is flush with the surface of the main body portion (21).

5. The circuit breaker energy storage lever limiter according to claim 3, characterized in that: A stepped rod portion (22) is formed at each end of the main body portion (21), and an elastic body (3) is respectively fitted on each of the two stepped rod portions (22). The two elastic bodies (3) are configured to correspond to the two collision action portions of the energy storage lever (1).

6. The circuit breaker energy storage lever limiter according to any one of claims 1 to 5, characterized in that: The elastomer (3) is a polyurethane (PU) elastomer.

7. A circuit breaker, characterized in that: The circuit breaker energy storage lever limiter comprises the circuit breaker energy storage lever limiter according to any one of claims 1 to 6.

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