阅读说明：本技术 一种断路器上的锁扣弹簧装置 (Lock catch spring device on circuit breaker ) 是由 周维峰 林凯 胡广召 于 2020-12-25 设计创作，主要内容包括：本发明涉及一种断路器,特别是断路器内部的锁扣弹簧装置。本发明采用如下技术方案：一种断路器上的锁扣弹簧装置,其特征在于：所述支架固定在断路器壳体中且位于锁扣的一侧,支架内设置有长槽,推杆置于长槽内,弹簧一端抵触在长槽内壁上,另一端抵触在推杆的第一端上,推杆的第二端从长槽上透出与锁扣的侧壁对应设置,在断路器分闸时推杆端部抵触在锁扣的侧壁上,在断路器合闸过程中,推杆对锁扣的推力逐渐变小或消失。通过采用上述方案,本发明克服现有技术存在的问题,提供一种锁扣弹簧在断路器断开到闭合过程中弹力逐渐变小或者弹力为零的新型的断路器上的锁扣弹簧装置。(The invention relates to a circuit breaker, in particular to a locking spring device in the circuit breaker. The invention adopts the following technical scheme: the utility model provides a hasp spring assembly on circuit breaker which characterized in that: the support is fixed in the shell of the circuit breaker and located on one side of the lock catch, an elongated slot is formed in the support, the push rod is arranged in the elongated slot, one end of the spring abuts against the inner wall of the elongated slot, the other end of the spring abuts against the first end of the push rod, the second end of the push rod penetrates out of the elongated slot and is arranged corresponding to the side wall of the lock catch, the end of the push rod abuts against the side wall of the lock catch when the circuit breaker is opened, and in the closing process of the circuit breaker, the pushing force of the push rod to. By adopting the scheme, the invention overcomes the problems in the prior art and provides the novel locking spring device on the circuit breaker, wherein the elastic force of the locking spring is gradually reduced or zero in the process of opening and closing the circuit breaker.)

1. The utility model provides a hasp spring assembly on circuit breaker which characterized in that: the circuit breaker comprises a moving contact mechanism, a lock catch, a handle, a connecting rod, a tripping mechanism, a support, a push rod and a spring, wherein the moving contact mechanism comprises a moving contact mounting seat and a moving contact, the handle is installed on a shell of the circuit breaker, the lock catch is rotatably arranged on the moving contact mounting seat, the first end of the connecting rod is connected to the handle, the second end of the connecting rod is connected to the matching part of the moving contact mounting seat and the lock catch, the support is fixed in the shell of the circuit breaker and located on one side of the lock catch, a long groove is formed in the support, the push rod is arranged in the long groove, one end of the spring is abutted to the inner wall of the long groove, the other end of the spring is abutted to the first end of the push rod, the second end of the push rod penetrates out of the long groove to be arranged corresponding to the side.

2. The latch spring assembly on a circuit breaker of claim 1, wherein: the upper end of the moving contact mounting seat is provided with a sliding groove, the sliding groove comprises a bent part and a straight part, the upper end of the lock catch is provided with a fork opening, after the breaker is disconnected, the push rod is matched with the bent part of the sliding groove and used for locking the second end of the connecting rod, and the handle can be pushed to close the breaker; the offline mechanism is used for locking the second end of the connecting rod, and the circuit breaker is switched off when the circuit breaker is switched on and the offline mechanism is used for locking the lock catch to rotate, so that the fork is unlocked, and the straight circuit breaker with the second end of the connecting rod sliding into the sliding groove is switched off.

3. A latch spring assembly on a circuit breaker according to claim 1 or 2, wherein: the second end of the push rod is provided with a limiting surface, the limiting surface and the wall surface of one end of the long groove can form interference fit to limit the moving distance of the second end, and the interference surface of the second end is a cambered surface.

4. A latch spring assembly on a circuit breaker according to claim 1 or 2, wherein: an opening for placing the push rod is formed in the long groove in the support, a cylinder for sleeving the spring is arranged at the first end of the push rod, a limiting edge is arranged below the first end of the push rod, a step is arranged on the inner side surface of the push rod, and a boss matched with the step and used for limiting the movement stroke of the push rod is arranged on the inner wall of the long groove.

5. The latching spring assembly of claim 4, wherein: and a magnetic yoke of the tripper is arranged at the opening of the long groove and shields the opening.

Technical Field

The invention relates to a circuit breaker, in particular to a locking spring device in the circuit breaker.

Background

The general lock catch spring is arranged on the lock catch, the force of the lock catch spring is a certain value and is generally about 0.1 to 0.5N, but the force has certain influence on product tripping, the bimetal generates heat and bends to push the lock catch to unlock the force of 0.1 to 0.5N, so that the force increases the requirement on the bending performance of the bimetallic strip, the bimetal temperature is possibly increased, and the power consumption of the product is improved.

Disclosure of Invention

The invention overcomes the problems in the prior art and provides a novel locking spring device on a circuit breaker, wherein the elastic force of a locking spring is gradually reduced or zero in the process of opening and closing the circuit breaker.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a hasp spring assembly on circuit breaker which characterized in that: the circuit breaker comprises a moving contact mechanism, a lock catch, a handle, a connecting rod, a tripping mechanism, a support, a push rod and a spring, wherein the moving contact mechanism comprises a moving contact mounting seat and a moving contact, the handle is installed on a shell of the circuit breaker, the lock catch is rotatably arranged on the moving contact mounting seat, the first end of the connecting rod is connected to the handle, the second end of the connecting rod is connected to the matching part of the moving contact mounting seat and the lock catch, the support is fixed in the shell of the circuit breaker and located on one side of the lock catch, a long groove is formed in the support, the push rod is arranged in the long groove, one end of the spring is abutted to the inner wall of the long groove, the other end of the spring is abutted to the first end of the push rod, the second end of the push rod penetrates out of the long groove to be arranged corresponding to the side.

Through adopting above-mentioned scheme, the spring has elasticity to the push rod when the circuit breaker disconnection, and the second end of push rod is used in on the hasp lateral wall this moment, just so can operate the circuit breaker, makes the circuit breaker combined floodgate, and the combined floodgate back, the elasticity of spring diminishes gradually, and the push rod diminishes or does not have to the thrust of hasp side, and the circuit breaker is more sensitive and quick when the action like this, and the power that just promotes the hasp also diminishes relatively.

The invention further provides that: the upper end of the moving contact mounting seat is provided with a sliding groove, the sliding groove comprises a bent part and a straight part, the upper end of the lock catch is provided with a fork opening, after the breaker is disconnected, the push rod is matched with the bent part of the sliding groove and used for locking the second end of the connecting rod, and the handle can be pushed to close the breaker; the offline mechanism is used for locking the second end of the connecting rod, and the circuit breaker is switched off when the circuit breaker is switched on and the offline mechanism is used for locking the lock catch to rotate, so that the fork is unlocked, and the straight circuit breaker with the second end of the connecting rod sliding into the sliding groove is switched off.

Through adopting above-mentioned scheme, make the cooperation of connecting rod second end and spout and fork more scientific and reasonable, this kind of structure is for the effect of better cooperation spring, push rod to the hasp in addition.

The invention further provides that: the second end of the push rod is provided with a limiting surface, the limiting surface and the wall surface of one end of the long groove can form interference fit to limit the moving distance of the second end, and the interference surface of the second end is a cambered surface.

Through adopting above-mentioned scheme, wherein spacing face can constitute the conflict cooperation with the wall of elongated slot one end, after the circuit breaker closes a floodgate like this, the push rod just can not produce thrust to the hasp side, the power that the bimetal pull rod promoted the hasp after closing a floodgate of assurance circuit breaker that can be fine is minimum, the power of tripping force when the circuit breaker is thermal overload is minimum promptly, what need explain here is that the circuit breaker is closing a floodgate, the second end of push rod can not contradict the hasp in what position, it is usually that the power that hasp fork mouth inner wall produced the second end of connecting rod is unlikely to make the connecting rod second end slide to the straight portion of spout when can, operating handle circuit breaker can continue to close a floodgate like this. The abutting surface of the second end of the push rod is arc-shaped, so that the stress directions of the lock catches are basically the same.

The invention further provides that: an opening for placing a push rod is formed in the long groove of the support, a cylinder for sleeving a spring is arranged at the first end of the push rod, a limiting edge is arranged below the first end of the push rod, a step is arranged on the inner side surface of the push rod, and a boss matched with the step and used for limiting the movement stroke of the push rod is arranged on the inner wall of the long groove; and a magnetic yoke of the tripper is arranged at the opening of the long groove and shields the opening.

Through adopting above-mentioned scheme, the push rod is placed firmly, simple to operate.

The present invention will be further described with reference to the following examples.

Drawings

FIG. 1 is a block diagram of an open position in accordance with an embodiment of the present invention;

FIG. 2 is a block diagram of an embodiment of the present invention as it is closed;

FIG. 3 is a block diagram of a closed position of an embodiment of the present invention;

FIG. 4 is a block diagram of the latch of the present invention during latching;

FIG. 5 is a perspective view of a putter in accordance with an embodiment of the present invention;

FIG. 6 is a perspective view of a bracket according to an embodiment of the present invention;

FIG. 7 is an exploded view of an embodiment of the present invention reflecting the mating of a bracket and a pushrod;

FIG. 8 is a block diagram of an embodiment of the present invention reflecting the mating of a bracket and a pushrod;

FIG. 9 is a perspective view of a latch according to an embodiment of the present invention;

fig. 10 is a perspective view of a movable contact mounting base according to an embodiment of the invention.

Detailed Description

As shown in fig. 1-10, a latch spring device on a circuit breaker includes a movable contact mechanism 1, a latch 2, a handle 3, a connecting rod 4, a trip mechanism 5, a bracket 6, a push rod 7 and a spring 8, where the movable contact mechanism 1 includes a movable contact mounting seat 11 and a movable contact 12, which is also common in the prior art, and therefore not described in detail herein, in an embodiment of the present invention, the handle 3 is mounted on a housing of the circuit breaker, the latch 2 is rotatably disposed on the movable contact mounting seat 11, a first end of the connecting rod 4 is connected to the handle 3, a second end of the connecting rod 4 is connected to a matching portion of the movable contact mounting seat 11 and the latch 2, the bracket 6 is fixed in the housing of the circuit breaker and located at one side of the latch 2, a long slot 61 is disposed in the bracket 6, the push rod 7 is disposed in the long slot 61, one end of the spring 8, the other end of the push rod 7 is abutted against the first end 71 of the push rod 7, the second end 72 of the push rod 7 is arranged corresponding to the side wall of the latch 2 after being exposed from the long groove 61, the end of the push rod 7 is abutted against the side wall 21 of the latch 2 when the breaker is opened, and the pushing force of the push rod 7 to the latch 2 is gradually reduced or disappears in the closing process of the breaker. Through adopting above-mentioned scheme, spring 8 has elasticity to push rod 7 when the circuit breaker disconnection, and the second end 72 of push rod 7 is used in 2 lateral walls 21 of hasp this moment, just so can operate the circuit breaker, makes the circuit breaker combined floodgate, and the combined floodgate back, spring 8's elasticity diminishes gradually, and push rod 7 diminishes or does not to the thrust of 2 sides 21 of hasp, and the circuit breaker is sensitive more and quick when the action like this, and the power that just promotes hasp 2 also diminishes relatively.

In the embodiment of the present invention, a sliding slot 111 is disposed at the upper end of the movable contact mounting seat 11, the sliding slot 111 includes a bending portion 1111 and a straight portion 1112, a fork 22 is disposed at the upper end of the latch 2, and after the circuit breaker is disconnected, the push rod 7 pushes the latch 2 to abut against the fork 22 to cooperate with the bending portion 1111 of the sliding slot 111, so as to lock the second end of the connecting rod 4, and at this time, the handle 3 can be pushed to close the circuit breaker; after the circuit breaker is closed, the offline mechanism 5 acts on the latch 2 to enable the latch 2 to rotate, then the fork 22 loses the locking of the second end of the connecting rod 4, and at the moment, the second end of the connecting rod 4 slides into the straight part 11112 of the sliding groove 1111 to open the circuit breaker. Through adopting above-mentioned scheme, make the cooperation of connecting rod 4 second end and spout 111 and fork 22 more scientific and reasonable, this kind of structure is for the effect of better cooperation spring 8, push rod 7 to hasp 2 in addition.

In the embodiment of the present invention, the second end 72 of the push rod 7 is provided with a limiting surface 721, the limiting surface 721 and the wall surface of one end of the long groove 61 can form an interference fit to limit the moving distance of the second end 72, and the interference surface of the second end 72 is an arc surface. By adopting the above scheme, the limiting surface 721 and the wall surface at one end of the elongated slot 61 can form an abutting fit, so that after the circuit breaker is switched on, the push rod 7 does not generate a pushing force on the side surface 21 of the latch 2, and it can be well ensured that the force of the bimetal pull rod pushing the latch 2 after the circuit breaker is switched on is the minimum, it needs to be described here that when the circuit breaker is switched on, the position of the second end 72 of the push rod 7 can not abut against the latch 2, and usually, the force generated by the inner wall of the fork 22 of the latch 2 to the second end of the connecting rod 4 is not enough to make the second end of the connecting rod 4 slide to the straight portion 1112 of the sliding slot 111, so that the circuit. The abutting surface of the second end 72 of the push rod 7 is arc-shaped, so that the stress directions of the lock catches 2 are basically the same.

In the embodiment of the invention, an opening 62 for placing the push rod 7 is formed in the long groove 61 of the support 6, a cylinder for sleeving the spring 8 is arranged at the first end 71 of the push rod 7, a limiting edge 73 is arranged below the first end 71 of the push rod 7, a step 74 is arranged on the inner side surface of the push rod 7, and a boss 63 which is matched with the step 74 and limits the movement stroke of the push rod 7 is arranged on the inner wall of the long groove 61; the yoke 51 of the trip 5 is arranged at the opening 62 of the long groove 61, the yoke 51 shields the opening 62, and the push rod 7 is prevented from being separated from the long groove 62 of the bracket 6.