CN214336587U

CN214336587U - Auxiliary switch mechanism for circuit breaker

Info

Publication number: CN214336587U
Application number: CN202120367387.XU
Authority: CN
Inventors: 周刘川; 刘磊; 郭友德; 董惠东
Original assignee: Xiamen Hongfa Electrical Safety and Controls Co Ltd
Current assignee: Xiamen Hongfa Electrical Safety and Controls Co Ltd
Priority date: 2021-02-08
Filing date: 2021-02-08
Publication date: 2021-10-01
Anticipated expiration: 2031-02-08

Abstract

The utility model provides an auxiliary switch mechanism for circuit breaker, including support, micro-gap switch, slider, upper elastic component and lower elastic component, be equipped with a vertical slide rail that sets up on the support, the slider slidable assembles on the slide rail, micro-gap switch sets up on the support, and its trigger end is located the slip orbit of slider, the upper end of upper elastic component connects the support, and its lower extreme connects the slider; the upper end of the lower elastic part is connected with a sliding block, and the lower end of the lower elastic part is connected with a mechanism rotating shaft cantilever for driving the opening and closing; the on-off switching of the circuit breaker can drive the sliding block to slide up and down, and then trigger or release the trigger of the micro switch, so that the auxiliary switch starts the on-off signal function, the mechanism has a good buffering effect, and can well buffer inertial impact. The lower elastic piece can buffer the impact force generated when a part of mechanisms are opened and closed instantly, absorb damage and protect the sliding block.

Description

Auxiliary switch mechanism for circuit breaker

Technical Field

The utility model relates to a circuit breaker accessory field, concretely relates to auxiliary switch mechanism for circuit breaker.

Background

In order to more conveniently confirm the opening and closing state of the circuit breaker, an auxiliary switch mechanism is usually arranged for auxiliary confirmation, the auxiliary switch mechanism generally comprises a microswitch and a transmission assembly, one end of the transmission assembly is connected with a mechanism rotating shaft cantilever for driving the opening and closing, and the other end of the transmission assembly is connected with an action part (such as a rotating shaft boss) for triggering the microswitch; the opening and closing action of the circuit breaker drives the action piece to act through the transmission assembly so as to trigger the micro switch or release the trigger micro switch, and therefore the auxiliary switch starts the on-off signal function. In the prior art, the transmission assembly is of a rigid structure, and as the mechanism is very high in switching-on speed and has strong inertial impact, and the transmission assembly of the rigid structure cannot buffer the generated inertial impact, the structure can damage the auxiliary switch structure and the microswitch and needs to be improved.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides an auxiliary switch mechanism for circuit breaker can effectively play the effect of buffering, effectively improves the prior art problem.

In order to achieve the above purpose, the utility model provides a technical scheme as follows:

an auxiliary switch mechanism for a circuit breaker comprises a support, a micro switch, a sliding block, an upper elastic part and a lower elastic part, wherein a vertically arranged sliding rail is arranged on the support, the sliding block is assembled on the sliding rail in a sliding manner, the micro switch is arranged on the support, the triggering end of the micro switch is positioned on the sliding track of the sliding block, the upper end of the upper elastic part is connected with the support, and the lower end of the upper elastic part is connected with the sliding block; the upper end of the lower elastic part is connected with a sliding block, and the lower end of the lower elastic part is connected with a mechanism rotating shaft cantilever for driving the opening and closing; the on-off switching of the circuit breaker can drive the sliding block to slide up and down, and then the micro switch is triggered or de-triggered.

Furthermore, a sliding cavity is formed in the support, the sliding block, the upper elastic piece and the lower elastic piece are all accommodated in the sliding cavity, the sliding cavity is at least provided with a lower end opening for the lower end of the lower elastic piece to extend out, and the trigger end of the micro switch also extends into the sliding cavity so as to be positioned on the sliding track of the sliding block.

Furthermore, the sliding cavity on the bracket is also provided with a lateral opening, and a detachable cover plate is covered on the lateral opening of the sliding cavity.

Further, still be formed with the installation cavity that sets up with the sliding chamber back of the body on the back on the body on the support, set up the opening of stepping down that link up mutually between installation cavity and the sliding chamber, micro-gap switch assembles in the installation cavity, and its trigger end stretches into through the opening of stepping down in the sliding chamber.

Furthermore, the installation cavity on the support is provided with a lateral opening, and a detachable cover plate covers the lateral opening of the installation cavity.

Furthermore, a boss used for being in contact with the trigger end of the micro switch is arranged on the sliding block.

Furthermore, the upper end and the lower end of the boss are both arc-shaped end parts.

Furthermore, the upper elastic part is an upper tension spring.

Furthermore, the lower elastic part is a lower tension spring.

Through the utility model provides a technical scheme has following beneficial effect:

the divide-shut brake of circuit breaker switches and can orders about the slider and slide from top to bottom, specifically does: when the cantilever of the rotating shaft of the mechanism swings downwards, the sliding block is pulled downwards by the lower elastic piece, and the sliding block slides downwards by overcoming the elasticity of the upper elastic piece; when the cantilever of the rotating shaft of the mechanism swings upwards, the sliding block loses the downward pulling force and slides upwards to reset under the action of the elastic restoring force of the upper elastic part, and then the micro switch is triggered or released to trigger, so that the auxiliary switch starts the on-off signal function. The lower elastic piece can buffer the impact force generated when a part of mechanisms are opened and closed instantly, absorb damage and protect the sliding block.

Drawings

Fig. 1 is an external view schematically showing an auxiliary switching mechanism for a circuit breaker according to an embodiment;

FIG. 2 is a schematic view of the hidden internal structure of one of the cover plates based on FIG. 1;

fig. 3 is a rear view showing an auxiliary switching mechanism for a circuit breaker according to the embodiment;

FIG. 4 is a cross-sectional view taken along line A-A of FIG. 3;

fig. 5 is an exploded view of an auxiliary switching mechanism for a circuit breaker according to an embodiment of the present invention in a side view;

fig. 6 is an exploded perspective view of the auxiliary switch mechanism for a circuit breaker according to the embodiment.

Detailed Description

To further illustrate the embodiments, the present invention provides the accompanying drawings. The accompanying drawings, which are incorporated in and constitute a part of this disclosure, illustrate embodiments of the invention and, together with the description, serve to explain the principles of the embodiments. With these references, one of ordinary skill in the art will appreciate other possible embodiments and advantages of the present invention. Elements in the figures are not drawn to scale and like reference numerals are generally used to indicate like elements.

The present invention will now be further described with reference to the accompanying drawings and detailed description.

Referring to fig. 1 to 6, an auxiliary switch mechanism for a circuit breaker includes a bracket 10, a micro switch 40, a slider 20, an upper elastic member 31, and a lower elastic member 32, wherein the bracket 10 is configured to be fixed to a cover plate of the circuit breaker mechanism. The bracket 10 is provided with a vertically arranged slide rail 11, the slide block 20 is slidably assembled on the slide rail 11, the microswitch 40 is arranged on the bracket 10, the trigger end 41 of the microswitch is positioned on the sliding track of the slide block 20, the upper end of the upper elastic part 31 is connected with the bracket 10, and the lower end of the upper elastic part is connected with the slide block 20; the upper end of the lower elastic part 32 is connected with the sliding block 20, and the lower end of the lower elastic part is connected with a mechanism rotating shaft cantilever for driving the opening and closing; the on-off switching of the circuit breaker can drive the sliding block 20 to slide up and down, and further trigger or release the trigger of the micro switch 40.

Specifically, the specific layout in this embodiment is as follows: in the open state, the slider 20 is held at the upper end position, as shown in fig. 2 and 4, and the trigger end 41 of the microswitch 40 is located below the slider 20. When closing, the rotating shaft cantilever of the mechanism swings downwards, the sliding block 20 is pulled downwards through the lower elastic piece 32, the sliding block 20 slides downwards by overcoming the elastic force of the upper elastic piece 31, the sliding block 20 slides downwards to be contacted with the trigger end 41 of the micro switch 40, and then the micro switch 40 is triggered; when the brake is switched off, the cantilever of the rotating shaft of the mechanism swings upwards, the sliding block 20 loses the downward tension and slides upwards to reset under the action of the elastic restoring force of the upper elastic piece 31, and then the micro switch 40 is released from being triggered; therefore, the auxiliary switch starts the on-off signal function, and the opening and closing state of the circuit breaker is confirmed by an auxiliary operator. The mechanism has a good buffering effect and can well buffer inertial impact. In the whole process, the lower elastic piece 32 can buffer the impact force generated when a part of mechanisms are opened and closed instantly, absorb the damage and protect the sliding block.

Of course, in other embodiments, the trigger end 41 of the microswitch 40 can also be arranged in the upper end position, i.e. the microswitch 40 is triggered when the slide 20 is reset to the upper end position; and is released from the microswitch 40 to be released when it is slid down. Or the circuit breaker drives the sliding block 20 to slide downwards when opening the brake, and the sliding block 20 slides upwards to reset when removing the pulling force when closing the brake, and the like.

Further, in this embodiment, a sliding cavity 101 is formed on the bracket 10, the sliding block 20, the upper elastic member 31 and the lower elastic member 32 are accommodated in the sliding cavity 101, the sliding cavity 101 has at least a lower opening for allowing the lower end of the lower elastic member 32 to extend out, and the trigger end 41 of the micro switch 40 also extends into the sliding cavity 101 to be located on the sliding track of the sliding block 20. This sliding chamber 101's setting, parts such as holding slider 20, last elastic component 31 and lower elastic component 32 that can be fine play isolation protection's effect, avoid receiving external environment's influence.

The sliding cavity 101 of the bracket 10 further has a lateral opening, specifically, the lateral opening defining the sliding cavity 101 is a front opening, a detachable cover plate covers the front opening of the sliding cavity 101, and the cover plate is defined as the front cover plate 51. The front opening is provided to facilitate the assembling or disassembling operation of the slider 20, the upper elastic member 31, and the lower elastic member 32.

Still be formed with the installation cavity 102 that sets up with sliding cavity 101 back of the body on the support 10, installation cavity 102 is located the rear side of sliding cavity 101 promptly, set up the opening of stepping down 12 that link up mutually between installation cavity 102 and the sliding cavity 101, micro-gap switch 40 assembles in installation cavity 102, and its trigger end 41 stretches into through the opening of stepping down 12 in the sliding cavity 101. The installation cavity 102 also plays a role in isolation protection, and makes the appearance neat.

The mounting cavity 102 of the bracket 10 has a lateral opening, specifically, the lateral opening defining the mounting cavity is a rear opening, a detachable cover plate covers the rear opening of the mounting cavity 102, and the cover plate is defined as a rear cover plate 52. The rear opening is provided to facilitate the assembling or disassembling operation of the micro switch 40.

Of course, in other embodiments, the sliding cavity 101 and the mounting cavity 102 may not be provided on the bracket 10.

The slide rail 11 is a slide groove formed on an opposite side wall of the slide cavity 101, and the slide block 20 is assembled in the slide groove to realize sliding fit. Of course, in other embodiments, the slide rail 11 may also be disposed on an opposite side wall of the slide cavity 101, and a rib may also be disposed on the slide block 20, and a sliding slot or the like slidably engaged with the rib is disposed on the slide block; as long as the up-and-down sliding of the slider can be achieved.

The slider 20 is provided with a boss 21 for contacting with the trigger end 41 of the micro switch 40, and the micro switch 40 is triggered by the contact of the boss 21 and the trigger end 41 of the micro switch 40. Specifically, the upper end and the lower end of the boss 21 are both provided with chamfers to form a guide structure 22, and when the trigger end 41 of the micro switch 40 is contacted or separated, the guide structure 22 has a guiding function, so that smooth transition can be realized, and the action is smoother. More specifically, the surface of the trigger end 41 of the micro switch 40 is configured as an arc surface, which is more effective. Of course, in other embodiments, the structure of the slider 20 and the manner of contact with the trigger end 41 of the microswitch 40 are not limited thereto.

The upper elastic member 31 is an upper tension spring, and the lower elastic member 32 is a lower tension spring. The two springs are realized by adopting the tension springs which are easy to obtain, the tension springs with different types and different parameters can be easily purchased in the market, and the tension springs are low in cost and good in motion stability. Of course, in other embodiments, the upper elastic element 31 and/or the lower elastic element 32 may be replaced by other elastic elements, such as elastic ropes, etc.

While the invention has been particularly shown and described with reference to a preferred embodiment, it will be understood by those skilled in the art that various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. An auxiliary switch mechanism for a circuit breaker, characterized in that: the device comprises a support, a microswitch, a sliding block, an upper elastic part and a lower elastic part, wherein a vertically arranged sliding rail is arranged on the support, the sliding block is assembled on the sliding rail in a sliding manner, the microswitch is arranged on the support, the trigger end of the microswitch is positioned on the sliding track of the sliding block, the upper end of the upper elastic part is connected with the support, and the lower end of the upper elastic part is connected with the sliding block; the upper end of the lower elastic part is connected with a sliding block, and the lower end of the lower elastic part is connected with a mechanism rotating shaft cantilever for driving the opening and closing; the on-off switching of the circuit breaker can drive the sliding block to slide up and down, and then the micro switch is triggered or de-triggered.

2. The auxiliary switching mechanism for a circuit breaker according to claim 1, wherein: the bracket is provided with a sliding cavity, the sliding block, the upper elastic piece and the lower elastic piece are all contained in the sliding cavity, the sliding cavity is at least provided with a lower end opening for the lower end of the lower elastic piece to extend out, and the trigger end of the micro switch also extends into the sliding cavity to be positioned on the sliding track of the sliding block.

3. The auxiliary switching mechanism for a circuit breaker according to claim 2, wherein: the sliding cavity on the bracket is also provided with a lateral opening, and a detachable cover plate is covered on the lateral opening of the sliding cavity.

4. The auxiliary switching mechanism for a circuit breaker according to claim 2, wherein: still be formed with the installation cavity that sets up with the chamber that slides mutually back on the body on the support, set up the opening of stepping down that link up mutually between installation cavity and the sliding chamber, micro-gap switch assembles in the installation cavity, and its trigger end stretches into through the opening of stepping down in the sliding chamber.

5. The auxiliary switching mechanism for a circuit breaker according to claim 4, wherein: the installation cavity on the support is provided with a lateral opening, and a detachable cover plate covers the lateral opening of the installation cavity.

6. The auxiliary switching mechanism for a circuit breaker according to claim 1, wherein: and the sliding block is provided with a boss used for being contacted with the trigger end of the microswitch.

7. The auxiliary switching mechanism for a circuit breaker according to claim 6, wherein: the upper end and the lower end of the boss are both arc-shaped end parts.

8. The auxiliary switching mechanism for a circuit breaker according to claim 1, wherein: the upper elastic piece is an upper tension spring.

9. The auxiliary switch mechanism for a circuit breaker according to claim 1 or 4, wherein: the lower elastic part is a lower tension spring.