CN214477297U

CN214477297U - Auxiliary contact for universal circuit breaker

Info

Publication number: CN214477297U
Application number: CN202023282471.6U
Authority: CN
Inventors: 孔惟丰; 何春; 陆赛玉; 聂玉言; 崔华
Original assignee: Shanghai Liangxin Electrical Co Ltd
Current assignee: Shanghai Liangxin Electrical Co Ltd
Priority date: 2020-12-29
Filing date: 2020-12-29
Publication date: 2021-10-22
Anticipated expiration: 2030-12-29

Abstract

The utility model provides an auxiliary contact for universal circuit breaker, it includes support (1), its characterized in that: micro-gap switch poker rod (3) are installed on support (1) and can rotate around self axle center, be equipped with on micro-gap switch poker rod (3) and stir protruding (301), stir protruding (301) with micro-gap switch (2) trigger foot (201) corresponding, micro-gap switch poker rod (3) rotate the in-process, stir protruding (301) and can stir trigger foot (201) or leave thereby it makes to trigger foot (201) micro-gap switch (2) switch-on or disconnection, micro-gap switch poker rod (3) are connected with pivot poker rod (4), pivot poker rod (4) can rotate around self axle center, pivot poker rod (4) rotate the in-process and can drive micro-gap switch poker rod (3) rotate, micro-gap switch poker rod (3) are connected with reset spring (5). The transmission of the rotating shaft not only shortens the time required by motion transmission, but also improves the reliability of the motion transmission.

Description

Auxiliary contact for universal circuit breaker

Technical Field

The utility model belongs to the technical field of the circuit breaker, specifically say so and relate to an auxiliary contact for universal circuit breaker.

Background

The universal circuit breaker is an important device in a power transmission and distribution system, plays a role in connecting normal working current and breaking fault current in a circuit, and has the functions of overload, undervoltage, short-circuit protection and the like. The auxiliary contact is one of the main accessories of the universal circuit breaker, and the auxiliary contact is provided with a normally open contact and a normally closed contact, and can provide a switching-on/off signal of the universal circuit breaker. The conventional universal circuit breaker auxiliary contact is arranged on the mechanism side, a mechanism main shaft rotates to drive a cantilever to rotate for a certain angle, the cantilever drives a lever to act, and the lever drives the auxiliary contact to complete the conversion between a normally open contact and a normally closed contact of the auxiliary contact. However, the conventional auxiliary contact of the universal circuit breaker on the market at present usually adopts a bounce-proof structure to avoid the inaccurate switching signal caused by the reciprocating motion of a rotating arm of a moving contact bounce-proof driving mechanism, but the bounce-proof auxiliary contact structure has more parts and larger volume and is difficult to meet the installation and use in a narrow space.

Chinese patent ZL201810575935.0 discloses an auxiliary contact for universal circuit breaker, which comprises a base assembly and a base assembly, wherein the base assembly and the base assembly are assembled together, and the auxiliary contact is characterized in that: the base component is internally provided with a plurality of micro switch sets side by side, the base component is internally provided with a flexible PCB, the base component is connected with a shifting mechanism, the shifting mechanism is connected with a mechanism cantilever through a buffer spring, and the mechanism cantilever can drive the shifting mechanism to shift the plurality of micro switch sets. According to the auxiliary contact for the universal circuit breaker, the two rows of the parallel micro switches are arranged in parallel, so that the number of the contacts is increased, and meanwhile, the circuit board is connected with the flexible circuit board, so that a lead is omitted, and the structure is simplified; the cantilever is connected with the auxiliary contact assembly through a spring, so that the bounce is reduced; the contact adopts plug-in structure, and convenient the dismantlement has reduced the equipment degree of difficulty. But the motion transmission reliability is also poor due to the limited volume reduction amplitude caused by using the buffer spring as the driving member.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a to above-mentioned existing omnipotent circuit breaker with supplementary contact bulky, the not high technical defect of reliability, provide an omnipotent circuit breaker with supplementary contact, utilize the pivot transmission not only to reduce the required time of motion transmission, still improved the reliability of motion transmission simultaneously.

Technical scheme

In order to realize the technical purpose, the utility model provides a pair of omnipotent auxiliary contact for circuit breaker, it includes the support, micro-gap switch fixed mounting be in on the support, its characterized in that: the micro-gap switch poking rod is installed on the support and can rotate around the center of the self axis, a poking protrusion is arranged on the micro-gap switch poking rod, the poking protrusion corresponds to a triggering foot of the micro-gap switch, the micro-gap switch poking rod rotates in the process, the poking protrusion can poke the triggering foot or leaves the triggering foot to enable the micro-gap switch to be switched on or switched off, the micro-gap switch poking rod is connected with a rotating shaft poking rod, the rotating shaft poking rod can rotate around the center of the self axis, the rotating shaft poking rod can drive in the rotating process, the micro-gap switch poking rod rotates, and the micro-gap switch poking rod is connected with a reset spring.

Furthermore, the microswitch poke rod is fixedly connected with the rotating shaft poke rod through a half shaft.

Furthermore, the rotating shaft poke rod is linked with a main shaft cantilever of the circuit breaker.

Further, the micro switch is installed in the inner cavity of the bracket.

Furthermore, the microswitch poke rod is arranged on the bracket and is positioned below the microswitch.

Further, the rotating shaft poke rod is positioned outside the support.

Furthermore, one end of the reset spring is arranged on the microswitch poke rod, and the other end of the reset spring is arranged on the bracket.

Advantageous effects

The utility model provides a pair of omnipotent auxiliary contact for circuit breaker utilizes the pivot transmission not only to reduce the required time of motion transmission, has still improved the reliability of motion transmission simultaneously.

Drawings

Fig. 1 is a product diagram of the embodiment of the present invention.

Fig. 2 is a schematic position diagram of the microswitch and the microswitch poke rod in the embodiment of the present invention.

Fig. 3 is a schematic view of a bracket structure in an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of the microswitch poke rod in the embodiment of the present invention.

Fig. 5 is a schematic structural diagram of the rotating shaft poke rod in the embodiment of the present invention.

Fig. 6 is a schematic structural diagram of a half shaft in the 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.

Examples

As shown in fig. 1, 2 and 3, the auxiliary contact for the universal circuit breaker comprises a bracket 1, and a micro switch 2 is fixedly installed on the bracket 1, wherein in the embodiment, the micro switch 2 is installed in an inner cavity 101 of the bracket 1. The microswitch poke rod 3 is arranged on the support 1 and can rotate around the center of the self shaft, and the microswitch poke rod 3 is arranged on the support 1 and is positioned below the microswitch 2.

As shown in fig. 2 and 4, be equipped with on the micro-gap switch poker rod 3 and stir protruding 301, stir protruding 301 with micro-gap switch 2's trigger foot 201 is corresponding, micro-gap switch poker rod 3 rotates the in-process, stir protruding 301 and can stir trigger foot 201 or leave trigger foot 201 thereby make micro-gap switch 2 switch-on or disconnection, micro-gap switch poker rod 3 is connected as the pivot poker rod 4 that fig. 5 shows, in this embodiment, micro-gap switch poker rod 3 is through semi-axis 6 and pivot poker rod 4 fixed connection as shown in fig. 6, pivot poker rod 4 and circuit breaker main shaft cantilever phase linkage. The rotating shaft poke rod 4 is positioned outside the bracket 1. The rotating shaft poking rod 4 can rotate around the center of the self shaft, the rotating shaft poking rod 4 can drive the micro switch poking rod 3 to rotate in the rotating process, and the micro switch poking rod 3 is connected with a reset spring 5. One end of the reset spring 5 is arranged on the microswitch poke rod 3, and the other end is arranged on the bracket 1.

When the universal circuit breaker operates, the main shaft cantilever of the universal circuit breaker drives the rotating shaft poking rod 4 to move, the rotating shaft poking rod 4 drives the micro switch poking rod 3 to move according to the same movement trend, and the micro switch poking rod 3 is pressed or separated with the micro switch 2 through rotation, so that the micro switch 1 is driven to be closed and separated, and a contact closing and separating signal of the universal circuit breaker is transmitted.

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 an auxiliary contact for omnipotent circuit breaker, it includes support (1), micro-gap switch (2) fixed mounting in on support (1), its characterized in that: micro-gap switch poker rod (3) are installed on support (1) and can rotate around self axle center, be equipped with on micro-gap switch poker rod (3) and stir protruding (301), stir protruding (301) with micro-gap switch (2) trigger foot (201) corresponding, micro-gap switch poker rod (3) rotate the in-process, stir protruding (301) and can stir trigger foot (201) or leave thereby it makes to trigger foot (201) micro-gap switch (2) switch-on or disconnection, micro-gap switch poker rod (3) are connected with pivot poker rod (4), pivot poker rod (4) can rotate around self axle center, pivot poker rod (4) rotate the in-process and can drive micro-gap switch poker rod (3) rotate, micro-gap switch poker rod (3) are connected with reset spring (5).

2. An auxiliary contact for a universal circuit breaker as claimed in claim 1, wherein: the microswitch poke rod (3) is fixedly connected with the rotating shaft poke rod (4) through a half shaft (6).

3. An auxiliary contact for a universal circuit breaker as claimed in claim 1, wherein: the rotating shaft poking rod (4) is linked with a main shaft cantilever of the circuit breaker.

4. An auxiliary contact for a universal circuit breaker as claimed in claim 1, wherein: the microswitch (2) is arranged in the inner cavity of the bracket (1).

5. An auxiliary contact for a universal circuit breaker as claimed in claim 1, wherein: the microswitch poke rod (3) is arranged on the bracket (1) and is positioned below the microswitch (2).

6. An auxiliary contact for a universal circuit breaker as claimed in claim 1, wherein: the rotating shaft poke rod (4) is positioned on the outer side of the support (1).

7. An auxiliary contact for a universal circuit breaker as claimed in claim 1, wherein: one end of the reset spring (5) is arranged on the microswitch poke rod (3), and the other end is arranged on the bracket (1).