CN214848392U

CN214848392U - Anti-rebound mechanism of circuit breaker

Info

Publication number: CN214848392U
Application number: CN202023104678.4U
Authority: CN
Inventors: 聂玉言; 何春; 陆赛玉; 孔惟丰; 崔华
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-12-21
Filing date: 2020-12-21
Publication date: 2021-11-23
Anticipated expiration: 2030-12-21

Abstract

The utility model provides a circuit breaker prevents rebound mechanism, it includes mechanism curb plate (1), its characterized in that: mounting plate (2) fixed mounting is in on mechanism curb plate (1), stopper (3) pivoted dress is in the outside of mounting plate (2), be provided with spacing axle (4) of step and spacing axle (5) on the lateral surface of mounting plate (2), be equipped with on stopper (3) with spacing corresponding spacing hole (301) of axle (4) of step, step groove (401) of spacing axle (4) of step are located in spacing hole (301), spacing axle (5) are located stopper (3) top is supported the last side of stopper (3), stopper (3) are connected with reset torsion spring (6). The anti-bounce structure is installed in a modularized mode, when the anti-bounce structure breaks down, the anti-bounce structure only needs to be disassembled, assembled and disassembled for maintenance or replacement, maintenance difficulty is reduced, maintenance cost is saved, meanwhile, the anti-bounce module is in contact with the anti-bounce shaft on the main shaft cantilever from a point to a contact position surface, and reliability of anti-bounce is improved.

Description

Anti-rebound mechanism of circuit breaker

Technical Field

The utility model belongs to the technical field of the circuit breaker, specifically say so and relate to a rebound prevention mechanism for circuit breaker.

Background

In the process of switching-on operation of the switch, the cantilever main shaft is linked with the moving contact to make the moving contact rotate towards the direction of the switch bottom plate, and in the process, a reaction spring of the operating mechanism is stretched and the spring force of the reaction spring is overcome; the moving contact is provided with a contact spring, and after the switch completes the switching-on operation, the contact spring is compressed to provide contact pressure when the switch is switched on.

When the switch is opened, under the action of the tension of the operating mechanism counter-force spring and the counter-force of the pressure of the moving contact spring, the cantilever main shaft of the operating mechanism rapidly rotates, the moving contact is linked by the connecting rod to rotate in the direction far away from the switch bottom plate until the opening is completely in place, and the bouncing phenomenon is serious.

Chinese patent ZL201820464175.1 discloses an improvement structure of preventing kick-backing of switch, and it includes the mechanism curb plate, mechanism main shaft and combined floodgate semi-axis, and the both ends dress of combined floodgate semi-axis just can rotate on the mechanism curb plate, and the unblock lever dress is in can rotate around the lever axle on the mechanism curb plate, be equipped with the cantilever on the mechanism main shaft, its characterized in that: the cantilever is connected with a locking mechanism, one end of an unlocking lever is linked with the closing half shaft, the other end of the unlocking lever is linked with the locking mechanism, a stroke limiting hole is formed in the unlocking lever, a stroke limiting shaft corresponding to the stroke limiting hole is formed in a mechanism side plate, and the rebound prevention improved structure of the switch limits the main shaft cantilever when the main shaft cantilever bounces by additionally arranging the rebound prevention locking mechanism, so that the main shaft cantilever cannot continuously bounce, the main shaft cantilever of the switch can be effectively inhibited from bouncing, the installation and maintenance are more convenient, and the use cost is effectively reduced. However, the interchangeability of the anti-bouncing mechanism is poor, once the anti-bouncing mechanism fails, the whole operating mechanism must be disassembled to be maintained or replaced, the maintenance difficulty is high, the cost is high, the anti-bouncing mechanism is in instant contact with the main shaft cantilever to achieve the anti-bouncing purpose, and the reliability is poor.

SUMMERY OF THE UTILITY MODEL

The utility model discloses an it is just poor to the current interchangeability of mechanism of preventing bouncing of the aforesaid, the maintenance degree of difficulty is big, high cost, and shellproof mechanism and main shaft cantilever contact in the twinkling of an eye plays the purpose of preventing bouncing, the relatively poor defect of reliability, a mechanism of rebounding is prevented to the circuit breaker is provided, carry out the modularization installation with shellproof structure, when shellproof mechanism breaks down, only need with shellproof mechanism dismouting get off maintain or change can, the maintenance degree of difficulty has been reduced, the cost of maintenance is practiced thrift, simultaneously will prevent bouncing on bounce module and the main shaft cantilever and roll up the contact of contact from the point contact thixotropic position face, the reliability of shellproof is improved.

Technical scheme

In order to realize the technical purpose, the utility model provides a pair of rebound mechanism is prevented to circuit breaker, it includes the mechanism curb plate, its characterized in that: mounting plate fixed mounting is in on the mechanism curb plate, stopper pivoted dress is in the outside of mounting plate, be provided with spacing axle of step and spacing axle on mounting plate's the lateral surface, be equipped with on the stopper with the spacing corresponding spacing hole of axle of step, the step groove of the spacing axle of step is located in the spacing hole, spacing axle is located the stopper top supports the side of going up of stopper, the stopper is connected with the reset torsion spring.

Further, the mounting bottom plate is fixedly mounted on the mechanism side plate by using a mounting shaft.

Furthermore, one end of the reset torsion spring sleeved on the mounting shaft is propped and hung on the mounting bottom plate, and the other end of the reset torsion spring is propped and hung on the stop piece to provide a restoring force for the stop piece to rotate anticlockwise.

Further, the limiting hole is an arc-shaped special-shaped hole, and the shape of the limiting hole corresponds to the rotation stroke of the stop piece.

Furthermore, a main shaft cantilever is fixedly arranged on the mechanism main shaft and can rotate together with the mechanism main shaft, a linkage shaft is arranged on the main shaft cantilever, and the linkage shaft corresponds to the limiting part of the stop piece.

Furthermore, the linkage shaft rotates to the opening state along with the main shaft cantilever and can be propped by the limiting part to limit bouncing when being in the maximum opening distance.

Furthermore, the corresponding overlapping surface of the linkage shaft and the stop piece is an inclined surface.

Advantageous effects

The utility model provides a pair of rebound mechanism is prevented to circuit breaker carries out the modularization installation with shellproof structure, when shellproof mechanism breaks down, only need with shellproof mechanism dismouting get off the maintenance or change can, reduced the maintenance degree of difficulty, practiced thrift cost of maintenance, the axle of preventing on module and the main shaft cantilever of will preventing simultaneously bounces from the contact of point contact dislocation face, has improved shellproof reliability.

Drawings

Fig. 1 is a schematic diagram of the embodiment of the present invention in a closing state;

FIG. 2 is a schematic diagram of the state of the embodiment of the present invention in the process of opening the brake;

fig. 3 is a schematic diagram of the embodiment of the present invention in the opening state;

FIG. 4 is a schematic view of the landing surface of a stop according to an embodiment of the present invention;

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "inside", "outside", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted" and "connected" are to be interpreted broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

The present invention will be described in further detail below with reference to specific embodiments and with reference to the attached drawings.

As shown in fig. 1, the anti-rebound mechanism of the circuit breaker comprises a mechanism side plate 1, and a mounting bottom plate 2 is fixedly mounted on the mechanism side plate 1, in this embodiment, the mounting bottom plate 2 is fixedly mounted on the mechanism side plate 1 by using a mounting shaft 7.

The stop piece 3 is rotatably arranged on the outer side of the mounting base plate 2, a step limiting shaft 4 and a limiting shaft 5 are arranged on the outer side surface of the mounting base plate 2, a limiting hole 301 corresponding to the step limiting shaft 4 is arranged on the stop piece 3, in the embodiment, the limiting hole 301 is an arc-shaped special-shaped hole, and the shape of the arc-shaped special-shaped hole corresponds to the rotation stroke of the stop piece 3.

The step groove 401 of the step limiting shaft 4 is positioned in the limiting hole 301, the limiting shaft 5 is positioned above the stopping piece 3 and props against the upper side surface of the stopping piece 3, and the stopping piece 3 is connected with a reset torsion spring 6. The reset torsion spring 6 is sleeved on the mounting shaft 7, one end of the reset torsion spring is propped and hung on the mounting bottom plate 2, and the other end of the reset torsion spring is propped and hung on the stop piece 3 to provide a restoring force for the stop piece 3 to rotate anticlockwise.

The main shaft cantilever 8 is fixedly arranged on the mechanism main shaft 9 and can rotate together with the mechanism main shaft 9, a linkage shaft 10 is arranged on the main shaft cantilever 8, and the linkage shaft 10 corresponds to the limiting part 302 of the stop piece 3. Specifically, as shown in fig. 4, the surface of the linkage shaft 10, which is overlapped with the stopper 3, is an inclined surface 10a to improve the product consistency and tolerance requirements during mass production. The linkage shaft 10 rotates along with the main shaft cantilever 8 to be in a brake-off state and can be propped by the limiting part 302 to limit bouncing when being in a maximum opening distance. As shown in fig. 1, when the device is in a closing state, the stopper 3 is located below the linkage shaft 10, the linkage shaft 10 is located in the abdicating groove 303 on the stopper 3, as shown in fig. 2, when the device is in a brake opening process, the mechanism main shaft 9 rotates clockwise, the mechanism main shaft 9 overcomes the reset force of the reset torsion spring 6 to push the stopper open, and the stopper 3 rotates counterclockwise, as shown in fig. 3, when the mechanism rotating shaft 9 is in a brake opening rotation state to a maximum opening distance position, the stopper 3 abuts against the linkage shaft 10 by the arc-shaped limiting part 302 under the action of the reset torsion spring 6 to prevent the rebound.

The anti-rebound mechanism of the circuit breaker provided by the embodiment is installed in a modularized mode, when the anti-rebound mechanism breaks down, the anti-rebound mechanism only needs to be dismounted and mounted for maintenance or replacement, the maintenance difficulty is reduced, the maintenance cost is saved, meanwhile, the anti-rebound module and the anti-rebound shaft on the main shaft cantilever are in contact with the position of the position from a point, and the reliability of anti-rebound is improved.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a circuit breaker prevents rebound mechanism, it includes mechanism curb plate (1), its characterized in that: mounting plate (2) fixed mounting is in on mechanism curb plate (1), stopper (3) pivoted dress is in the outside of mounting plate (2), be provided with spacing axle (4) of step and spacing axle (5) on the lateral surface of mounting plate (2), be equipped with on stopper (3) with spacing corresponding spacing hole (301) of axle (4) of step, step groove (401) of spacing axle (4) of step are located in spacing hole (301), spacing axle (5) are located stopper (3) top is supported the last side of stopper (3), stopper (3) are connected with reset torsion spring (6).

2. The circuit breaker antirebound mechanism of claim 1, wherein: the mounting bottom plate (2) is fixedly mounted on the mechanism side plate (1) through a mounting shaft (7).

3. The circuit breaker antirebound mechanism of claim 1, wherein: the reset torsion spring (6) is sleeved on the mounting shaft (7), one end of the reset torsion spring is propped against and hung on the mounting bottom plate (2), and the other end of the reset torsion spring is propped against and hung on the stop piece (3) to provide the stop piece (3) with restoring force of anticlockwise rotation.

4. The circuit breaker antirebound mechanism of claim 1, wherein: the limiting hole (301) is an arc-shaped special-shaped hole, and the shape of the limiting hole corresponds to the rotation stroke of the stop piece (3).

5. The circuit breaker antirebound mechanism of claim 1, wherein: the main shaft cantilever (8) is fixedly arranged on the mechanism main shaft (9) and can rotate together with the mechanism main shaft (9), a linkage shaft (10) is arranged on the main shaft cantilever (8), and the linkage shaft (10) corresponds to the limiting part (302) of the stop piece (3).

6. The circuit breaker antirebound mechanism of claim 5, wherein: the linkage shaft (10) rotates along with the main shaft cantilever (8) to be in a brake-separating state and can be propped by the limiting part (302) to limit bouncing when being in a maximum opening distance.

7. The circuit breaker antirebound mechanism of claim 5, wherein: the corresponding lapping surface of the linkage shaft (10) and the stop piece (3) is an inclined surface (10 a).