Circuit breaker handle

Abstract

The circuit breaker handle comprises a handle body and a telescopic handle, the handle body comprises a rotating shaft used for being hinged to a base, a connecting part used for being matched with a bolt and a handle body part arranged outside a shell and connected with the telescopic handle, and the telescopic handle is arranged in a hollow mode. The telescopic handle sleeves the handle body part and slides up and down along the handle body part, elastic limiting clamping parts used for limiting the handle body part to be separated from the telescopic handle are arranged on the two sides of the handle body part, and buffer strips are arranged at the positions, abutting against the shell, of the front face and the rear face of the handle body part in the rotating direction during opening and closing. According to the technical scheme, the handle can be adjusted to be in a contraction state to be tightly attached to the surface of the circuit breaker in a normal state, space occupation is reduced, the telescopic handle is pulled during operation, a force arm is optimized, wrenching force is reduced, assembly is convenient and rapid, stability is high, the buffer strip is arranged, mechanical impact during opening and closing is absorbed, the handle breakage risk is reduced, and the service life of the mechanism is prolonged. The circuit breaker is especially applied to large-current circuit breakers.

Description

Technical Field

[0001] This utility model relates to the field of circuit breakers, specifically to a circuit breaker handle. Background Technology

[0002] As the core operating component of a mechanical circuit breaker, the circuit breaker handle is rigidly connected to the internal contact mechanism through a rotating shaft. It relies on the lever principle to transmit operating force. The mechanical impact at the moment of opening and closing is directly transmitted to the handle. The structure is simple but lacks a buffer design. Long-term use can easily lead to deformation or breakage of the handle. In addition, the traditional lever structure has not optimized the lever arm ratio. The operation of the high-current circuit breaker handle requires a lot of force, which is not user-friendly for women and the elderly. Utility Model Content

[0003] Based on the above problems, the purpose of this utility model is to provide a circuit breaker handle.

[0004] To address the above problems, the following technical solution is provided: a circuit breaker handle, comprising a handle body and a telescopic handle. The handle body includes a rotating shaft for hinged to a base, a connecting part for engaging with a pin, and a handle portion disposed outside the housing and connected to the telescopic handle. The telescopic handle is hollow and is sleeved on the handle portion and slides up and down along the handle portion. Elastic limiting clips are provided on both sides of the handle portion to limit the handle portion from disengaging from the telescopic handle. Buffer strips are provided on the front and rear sides of the handle portion in the rotation direction at the positions where it contacts the housing during opening and closing.

[0005] By adopting the above technical solution, the handle can be adjusted to a retracted state to fit snugly against the circuit breaker surface under normal conditions, reducing space occupation. When operating, pulling the telescopic handle optimizes the lever arm and reduces the force required to operate. At the same time, compared with the existing handles which are shorter in length, the telescopic handle can be adapted to different hand shapes of users, making it widely applicable. The use of an elastic limit locking part facilitates quick assembly and ensures high stability. A buffer bar is set to absorb the mechanical impact caused by the handle rotating and hitting the front and rear inner walls of the rotating groove of the housing during opening and closing, reducing the risk of handle breakage and extending the service life of the mechanism, especially suitable for high current circuit breakers.

[0006] The present invention further includes: a mounting groove adapted to the buffer strip is provided on the handle body corresponding to the position of the buffer strip; the mounting groove has an opening on one side; the length of the buffer strip is adapted to the mounting groove; the mounting groove is provided with an anti-detachment part to prevent the buffer strip from falling off in the front-to-back direction; and the buffer strip is higher than the handle body.

[0007] By adopting the above technical solution, the mounting slot is open on one side to facilitate the assembly and replacement of the buffer strip, and the mounting slot is closed on the other side to provide quick positioning and limiting. An anti-detachment part (i.e., the mounting slot adopts an I-shaped groove, dovetail groove, etc.) is set to prevent the buffer strip from falling off from the front and back directions.

[0008] The present invention further includes: a sliding channel is provided at one end of the handle corresponding to the telescopic handle, and a sliding post adapted to the sliding channel is provided inside the telescopic handle.

[0009] By adopting the above technical solution, the sliding column moves along the sliding channel, with dual guidance, resulting in higher stability of the telescopic handle.

[0010] The present invention further includes a spring sleeve on the sliding column, the spring being disposed between the telescopic handle and the handle body.

[0011] By adopting the above technical solution, the spring is sleeved outside the sliding column, and the spring is compressed or restored along the sliding column, resulting in higher stability and quick unfolding of the telescopic handle for convenient use.

[0012] The present invention further includes: positioning recesses on both sides of the handle body, and arc transition sections on both the upper and lower sides of the positioning recesses; the telescopic handle includes an open end that slides along the handle body, and elastic protrusions that cooperate with the positioning recesses are provided on both sides of the inner wall of the open end; the cross-section of the elastic protrusions is semi-circular.

[0013] By adopting the above technical solution, a distinct "click" sensation is produced during operation. The retracted state of the positioning handle allows it to fit snugly against the surface of the circuit breaker, reducing space occupation. At the same time, an arc transition section is set. When it is necessary to release the retracted state, only a slight force is needed to pull the retracted handle outward, which will allow the elastic protrusion to disengage from the positioning recess, making the operation simple and effortless.

[0014] The present invention further includes: the telescopic handle includes an operating part, the operating part is T-shaped, the side of the operating part corresponding to the handle body is provided with anti-slip texture, and the other side of the operating part opposite to the anti-slip texture is provided with a switch mark.

[0015] By adopting the above technical solution, the operating part is equipped with anti-slip texture, making the operating handle less prone to slipping. In addition, a switch mark is set, which is laser-engraved to ensure that the status is clearly identifiable and to avoid the mark becoming blurred after long-term use.

[0016] The present invention further comprises: a receiving cavity for accommodating a torsion spring is provided on the side of the rotating shaft; a positioning groove for positioning one end of the torsion spring is provided on the outer peripheral wall of the receiving cavity; a rotating column coaxially arranged with the rotating shaft is provided at the center of the receiving cavity; and the height of the rotating shaft is adapted to the depth of the receiving cavity.

[0017] By adopting the above technical solution, a positioning slot is set to fix one end of the torsion spring (the other end of the torsion spring is fixed on the base), which facilitates quick installation of the torsion spring and makes the assembly and fixing of the torsion spring more stable. A receiving cavity and a rotating column are set, and the torsion spring is set in the receiving cavity to limit the torsion spring. The torsion spring is sleeved on the outside of the rotating column. When the handle is turned, the torsion spring rotates and deforms around the rotating column as the axis, which further improves the stability of the torsion spring during the stress or recovery process.

[0018] The present invention further includes: the connecting part is provided with a receiving channel adapted to the pin, and the outer side of the connecting part is provided with a limiting part for limiting the rotation angle of the handle body.

[0019] By adopting the above technical solution, it is convenient to assemble and fix the pin, and at the same time, the limiting part is set to limit the rotation angle of the handle, thereby improving the stability of the hinge. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention.

[0021] Figure 2 This is a partial three-dimensional view of the present invention.

[0022] Figure 3 This is a cross-sectional view of the present invention.

[0023] Figure 4 for Figure 3 Enlarged view of part A.

[0024] The labels in the diagram mean the following: 1. Handle body, 11. Rotating shaft, 111. Receiving cavity, 112. Positioning slot, 113. Rotating column, 12. Connecting part, 121. Receiving channel, 13. Handle body, 131. Elastic limiting part, 132. Mounting slot, 1321. Anti-detachment part, 133. Sliding channel, 134. Positioning recess, 135. Arc transition section, 14. Limiting part, 2. Telescopic handle, 21. Sliding column, 22. Open end, 23. Elastic protrusion, 24. Operating part, 25. Anti-slip texture, 26. Switch mark, 3. Buffer strip, 4. Spring. Detailed Implementation

[0025] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0026] Reference Appendix Figure 1-4A circuit breaker handle includes a handle body 1 and a telescopic handle 2. The handle body 1 includes a rotating shaft 11 for hinged to a base, a connecting part 12 for engaging with a pin, and a handle part 13 disposed outside the housing and connected to the telescopic handle 2. The telescopic handle 2 is hollow and is sleeved on the handle part 13 and slides up and down along the handle part 13. The handle part 13 has elastic limiting clips 131 on both sides for limiting the handle part 13 from disengaging from the telescopic handle 2. The front and rear sides of the handle part 13 in the rotation direction are respectively provided with buffer strips 3 at the positions where they abut against the housing when the circuit breaker is opened or closed.

[0027] In this embodiment, the handle body 13 is provided with a mounting slot 132 that is adapted to the buffer strip 3 at the position corresponding to the buffer strip 3. The mounting slot 132 is open on one side. The length of the buffer strip 3 is adapted to the mounting slot 132. The mounting slot 132 is provided with an anti-detachment part 1321 to prevent the buffer strip 3 from falling off in the front-back direction. The buffer strip 3 is higher than the handle body 1.

[0028] In this embodiment, the handle body 13 is provided with a sliding channel 133 at one end corresponding to the telescopic handle 2, and the telescopic handle 2 is provided with a sliding post 21 that is adapted to the sliding channel 133.

[0029] In this embodiment, a spring 4 is further provided on the outer sleeve of the sliding column 21, and the spring 4 is disposed between the telescopic handle 2 and the handle body 13.

[0030] In this embodiment, the following configuration is further provided: positioning recesses 134 are provided on both sides of the handle body 13, and arc transition sections 135 are provided on both the upper and lower sides of the positioning recesses 134. The telescopic handle 2 includes an open end 22 that slides along the handle body 13. The inner walls of the open end 22 are provided with elastic protrusions 23 that cooperate with the positioning recesses 134. The cross-section of the elastic protrusions 23 is semi-circular.

[0031] In this embodiment, the telescopic handle 2 is further provided with an operating part 24, which is T-shaped. The operating part 24 has an anti-slip texture 25 on one side corresponding to the handle body 1, and a switch mark 26 on the other side of the operating part 24 opposite to the anti-slip texture 25.

[0032] This embodiment further includes the following features: a receiving cavity 111 for accommodating a torsion spring is provided on the side of the rotating shaft 11; a positioning groove 112 for positioning one end of the torsion spring is provided on the outer peripheral wall of the receiving cavity 111; a rotating column 113 coaxially arranged with the rotating shaft 11 is provided at the center of the receiving cavity 111; and the height of the rotating shaft 11 is adapted to the depth of the receiving cavity 111.

[0033] This embodiment further includes the following features: the connecting part 12 is provided with a receiving channel 121 adapted to the pin, and the outer side of the connecting part 12 is provided with a limiting part 14 for limiting the rotation angle of the handle body 1.

[0034] The terms “middle,” “upper,” “lower,” “front,” “back,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] Although this document frequently uses terms such as handle body 1, rotating shaft 11, receiving cavity 111, positioning slot 112, rotating column 113, connecting part 12, receiving channel 121, handle body part 13, elastic limiting part 131, mounting slot 132, anti-detachment part 1321, sliding channel 133, positioning recess 134, arc transition section 135, limiting part 14, telescopic handle 2, sliding column 21, open end 22, elastic protrusion 23, operating part 24, anti-slip texture 25, switch mark 26, buffer strip 3, and spring 4, the possibility of using other terms is not excluded. The use of these terms is merely for the convenience of describing and explaining the essence of this utility model; interpreting them as any additional limitation would contradict the spirit of this utility model.

Claims

1. A circuit breaker handle, characterized in that: The device includes a handle body and a telescopic handle. The handle body includes a rotating shaft for hinged to the base, a connecting part for engaging with a pin, and a handle portion disposed outside the housing and connected to the telescopic handle. The telescopic handle is hollow and is sleeved on the handle portion and slides up and down along the handle portion. The handle portion has elastic limiting clips on both sides for limiting the handle portion from disengaging from the telescopic handle. The front and rear sides of the handle portion in the rotation direction are respectively provided with buffer strips at the positions where they abut against the housing when the circuit is opened or closed.

2. A circuit breaker handle according to claim 1, characterized in that: The handle body is provided with a mounting slot that matches the buffer strip at the position of the buffer strip. The mounting slot is open on one side. The length of the buffer strip matches the mounting slot. The mounting slot is provided with an anti-detachment part to prevent the buffer strip from falling off in the front-to-back direction.

3. A circuit breaker handle according to claim 1, characterized in that: The handle body is provided with a sliding channel at one end corresponding to the telescopic handle, and the telescopic handle is provided with a sliding post that matches the sliding channel.

4. A circuit breaker handle according to claim 3, characterized in that: The sliding column is fitted with a spring, which is located between the telescopic handle and the handle body.

5. A circuit breaker handle according to claim 4, characterized in that: The handle body has positioning recesses on both sides, and the positioning recesses have arc transition sections on both the upper and lower sides. The telescopic handle includes an open end that slides along the handle body. The inner wall of the open end has elastic protrusions on both sides that cooperate with the positioning recesses. The elastic protrusions have a semi-circular cross-section.

6. A circuit breaker handle according to claim 1, characterized in that: The telescopic handle includes an operating part, which is T-shaped. The operating part has anti-slip texture on one side corresponding to the handle body, and a switch mark on the other side opposite the anti-slip texture.

7. A circuit breaker handle according to claim 1, characterized in that: The rotating shaft has a cavity on its side for accommodating the torsion spring. The outer peripheral wall of the cavity has a positioning groove for positioning one end of the torsion spring. The cavity has a rotating column coaxial with the rotating shaft at its center. The height of the rotating shaft is adapted to the depth of the cavity.

8. A circuit breaker handle according to claim 1, characterized in that: The connecting part is provided with a receiving channel adapted to the pin, and a limiting part is provided on the outside of the connecting part to limit the rotation angle of the handle body.

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