阅读说明：本技术 一种断路器的锁扣装置 (Locking device of 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装置。本发明采用如下技术方案：一种断路器的锁扣装置,其特征在于：所述动触头安装座上端设置有滑槽,滑槽包括有弯曲部和直部,连接杆的第一端连接在手柄上,连接杆的第二端置于滑槽内,所述锁扣上端设置有叉口,断路器断开后叉口与滑槽的弯曲部配合可对连接杆的第二端进行锁定,此时可推动手柄合闸断路器；断路器合闸后断路器的脱机机构对锁扣动作使锁扣转动则叉口失去对连接杆第二端的锁定,此时连接杆第二端滑入滑槽的直部实现断路器断开；通过采用上述方案,本发明克服现有技术存在的问题,提供一种可通过力学原理和机械学原理来减少零件,去除跳扣,并且使产品的脱扣力减少的新型的锁扣装置。(The invention relates to a circuit breaker, in particular to a locking device in the circuit breaker. The invention adopts the following technical scheme: the utility model provides a latch device of circuit breaker which characterized in that: the upper end of the moving contact mounting seat is provided with a sliding groove, the sliding groove comprises a bending part and a straight part, the first end of the connecting rod is connected to the handle, the second end of the connecting rod is arranged in the sliding groove, the upper end of the lock catch is provided with a fork opening, the fork opening is matched with the bending part of the sliding groove after the breaker is disconnected, the second end of the connecting rod can be locked, and the handle can be pushed to close the breaker at the moment; after the breaker is switched on, the off-line mechanism of the breaker acts on the lock catch to enable the lock catch to rotate, the fork opening loses the locking of the second end of the connecting rod, and the second end of the connecting rod slides into the straight part of the sliding groove to realize the breaking of the breaker; by adopting the scheme, the novel locking device overcomes the problems in the prior art, and can reduce parts, remove jump buttons and reduce the tripping force of a product by a mechanical principle and a mechanistic principle.)

1. The utility model provides a latch device of circuit breaker which characterized in that: comprises a moving contact mechanism, a lock catch, a handle and a connecting rod, wherein the moving contact mechanism comprises a moving contact mounting seat and a moving contact, the handle is arranged on a shell of the circuit breaker, the lock catch is rotationally arranged on the moving contact mounting seat, the upper end of the moving contact mounting seat is provided with a sliding chute, the sliding chute comprises a bending part and a straight part, one end of the bending part is communicated and connected with the straight part, the other end of the bending part is provided with a pressing surface, the first end of a connecting rod is connected on the handle, the second end of the connecting rod is arranged in the sliding chute, the upper end of the lock catch is provided with a pressing arm, the pressing arm is matched with the bending part of the chute after the breaker is disconnected to lock the second end of the connecting rod, the position of the first end of the connecting rod on the handle is lower than the position of the second end of the connecting rod on the bent part, the handle can be pushed to close the circuit breaker at the moment, and the second end of the connecting rod is abutted against the abutting surface in the closing process of the handle; after the circuit breaker is switched on, the connecting rod second end is contradicted on the face of supporting, and the contained angle between the thrust direction of closing the back handle to the connecting rod second end and the conflict direction of supporting the face to the connecting rod second end is less than 180 degrees all the time, and thrust and the produced resultant force to the connecting rod second end of the resultant force of supporting the power upwards, the arm of supporting of hasp is contradicted in the connecting rod top, supports the pressure and the resultant force looks balance of pressing the arm to the connecting rod second end and realizes that the connecting rod second end is arranged in the flexion and is contradicted to the face of supporting, and the hasp rotates then to support when the hasp action and presses the arm and loses the conflict to the connecting rod second end, and the circuit breaker disconnection is realized to the.

2. The latch on circuit breaker of claim 1, wherein: the arm is dialled to support of hasp pressing arm below being provided with, supports pressing arm and dials and constitute a fork mouth between the arm, and fork mouth bottom becomes the U-shaped setting, and the upside of fork mouth is the face of contradicting, and the downside of fork mouth is for stirring the face, and the opening of fork mouth is greater than the diameter of connecting rod second end, and when the face of contradicting was contradicted with connecting rod second end, the face of stirring left connecting rod second end, when the face of contradicting left connecting rod second end, the face of stirring can be stirred connecting rod second end.

3. The latch on circuit breaker of claim 2, wherein: the pressing arm and the shifting arm are arranged in a staggered mode, a notch is formed in the upper portion of the sliding groove of the moving contact mounting seat, the pressing arm can be placed into the notch, a boss is arranged on the lower portion of the sliding groove of the moving contact mounting seat, the shifting arm can be placed on the outer surface of the boss, and the upper side face of the boss and the lower side face of the bending portion of the sliding groove are connected into a whole to form a pressing face.

4. A latch on a circuit breaker according to claim 1 or 2, wherein: the utility model discloses a circuit breaker release, including support arm, moving contact mount pad, circular through-hole cover, driving lug, circular boss, circular through-hole cover, circular boss, driving lug, arc boss, circular through-hole cover, circular boss, circular through.

5. A latch assembly for a circuit breaker according to claim 3 wherein: the utility model discloses a circuit breaker release, including support arm, moving contact mount pad, circular through-hole cover, driving lug, circular boss, circular through-hole cover, circular boss, driving lug, arc boss, circular through-hole cover, circular boss, circular through.

Technical Field

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

Background

The existing circuit breaker product locking mechanism is generally provided with a lever, a lock catch and a jump buckle, the structure is complex, the cost is high, the jump buckle is in automatic assembly with unfavorable volume, the number of product parts is large, and the product has failure risk.

Disclosure of Invention

The invention overcomes the problems in the prior art and provides a novel locking device which can reduce parts, remove jump buttons and reduce the tripping force of a product by a mechanical principle and a mechanistic principle.

In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides a latch device of circuit breaker which characterized in that: comprises a moving contact mechanism, a lock catch, a handle and a connecting rod, wherein the moving contact mechanism comprises a moving contact mounting seat and a moving contact, the handle is arranged on a shell of the circuit breaker, the lock catch is rotationally arranged on the moving contact mounting seat, the upper end of the moving contact mounting seat is provided with a sliding chute, the sliding chute comprises a bending part and a straight part, one end of the bending part is communicated and connected with the straight part, the other end of the bending part is provided with a pressing surface, the first end of a connecting rod is connected on the handle, the second end of the connecting rod is arranged in the sliding chute, the upper end of the lock catch is provided with a pressing arm, the pressing arm is matched with the bending part of the chute after the breaker is disconnected to lock the second end of the connecting rod, the position of the first end of the connecting rod on the handle is lower than the position of the second end of the connecting rod on the bent part, the handle can be pushed to close the circuit breaker at the moment, and the second end of the connecting rod is abutted against the abutting surface in the closing process of the handle; after the circuit breaker is switched on, the connecting rod second end is contradicted on the face of supporting, and the contained angle between the thrust direction of closing the back handle to the connecting rod second end and the conflict direction of supporting the face to the connecting rod second end is less than 180 degrees all the time, and thrust and the produced resultant force to the connecting rod second end of the resultant force of supporting the power upwards, the arm of supporting of hasp is contradicted in the connecting rod top, supports the pressure and the resultant force looks balance of pressing the arm to the connecting rod second end and realizes that the connecting rod second end is arranged in the flexion and is contradicted to the face of supporting, and the hasp rotates then to support when the hasp action and presses the arm and loses the conflict to the connecting rod second end, and the circuit breaker disconnection is realized to the.

By adopting the scheme, the second end of the connecting rod is locked or unlocked in a new mode, and the switching-on or switching-off action of the circuit breaker is realized, so that the mode is convenient to install, stable in action and free from misoperation; the position of the first end of the connecting rod on the handle is lower than the position of the second end of the connecting rod on the bent part after the breaker is switched off, so that the movable contact mounting seat can be ensured to rotate when the handle is pushed subsequently, after the breaker is switched on, the second end of the connecting rod abuts against the abutting surface, an included angle between the thrust direction of the handle to the second end of the connecting rod and the abutting force direction of the abutting surface to the second end of the connecting rod is always smaller than 180 degrees in the switching-on process of the breaker and after the breaker is switched on, the purpose is to enable resultant force generated after the thrust and the abutting force counteract a part to be upward, at this time, the abutting arm just abuts against the second end of the connecting rod, so that the second end of the connecting rod can be well fixed on the bent part of the chute, in addition, after the latch rotates, the abutting arm leaves the position of the second, therefore, the moving contact mounting seat can rotate to realize opening.

The invention further provides that: the arm is dialled to support of hasp pressing arm below being provided with, supports pressing arm and dials and constitute a fork mouth between the arm, and fork mouth bottom becomes the U-shaped setting, and the upside of fork mouth is the face of contradicting, and the downside of fork mouth is for stirring the face, and the opening of fork mouth is greater than the diameter of connecting rod second end, and when the face of contradicting was contradicted with connecting rod second end, the face of stirring left connecting rod second end, when the face of contradicting left connecting rod second end, the face of stirring can be stirred connecting rod second end.

By adopting the scheme, the bottom of the fork opening is in the U shape, so that after the breaker is disconnected, the U-shaped opening can well lock the second end of the connecting rod at the bent part of the sliding groove, and a collision force is generated between a collision surface and the second end of the connecting rod in the closing process of the breaker to prevent the second end of the connecting rod from moving, so that the second end of the connecting rod is locked at the bent part under the condition that the lock catch is not subjected to external force; the arm is dialled to the circuit breaker when need break off after closing a floodgate also can carry out supplementary stirring to the connecting rod second end, and the problem that impurity can not move to the back circuit breaker of gluing of connecting rod second end that prevents that can be fine.

The invention further provides that: the pressing arm and the shifting arm are arranged in a staggered mode, a notch is formed in the upper portion of the sliding groove of the moving contact mounting seat, the pressing arm can be placed into the notch, a boss is arranged on the lower portion of the sliding groove of the moving contact mounting seat, the shifting arm can be placed on the outer surface of the boss, and the upper side face of the boss and the lower side face of the bending portion of the sliding groove are connected into a whole to form a pressing face.

By adopting the scheme, the pressing arm and the shifting arm are arranged in a staggered manner, so that the connection and the matching between the pressing arm and the moving contact mounting seat are more reasonable, and the size is small; the part of the upper side of the boss and the lower side of the bent part of the sliding chute are connected into a whole to form a pressing surface, so that the pressing surface is large as much as possible, and the second end of the connecting rod is matched with the pressing surface more stably.

The final setting of the invention is as follows: the utility model discloses a circuit breaker release, including support arm, moving contact mount pad, circular through-hole cover, driving lug, circular boss, circular through-hole cover, circular boss, driving lug, arc boss, circular through-hole cover, circular boss, circular through.

Through adopting above-mentioned scheme, wherein the setting on inclined plane makes things convenient for the connecting rod second end to slide in the flexion of spout, certainly also can not set up the inclined plane, only set up arc transition angle, moving contact mount pad adopts above-mentioned mode to realize normal running fit with the hasp, prevent that dust or impurity that like this can be fine from gluing hasp and moving contact mount pad, influence the normal work of circuit breaker, the plectrum that the below of hasp set up and the effect of separating the arc piece are for two golden pull rod work and wall electric arc, the side of hasp is located the top of circular through-hole and is provided with the slope face of pushing away, the purpose makes things convenient for the hasp push rod to promote, the below that the side is located circular through-hole is provided with the cambered surface that supplies circuit breaker release push rod to.

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

Drawings

FIG. 1 is a block diagram of a product latch in a disengaged position according to an embodiment of the present invention;

FIG. 2 is a block diagram of a latch during the initial closing of a product according to an embodiment of the invention;

FIG. 3 is a block diagram of a latch during closing of a product according to an embodiment of the invention;

FIG. 4 is a block diagram of a latch after closing of the product according to an embodiment of the invention;

fig. 5 is a structural diagram of a latch to be disengaged according to an embodiment of the present invention;

fig. 6 is a structural diagram of a lock catch when a product is forcibly released according to an embodiment of the invention;

fig. 7 is a structural diagram of a lock catch in a handle returning process after a product is released according to an embodiment of the invention;

FIG. 8 is a structural diagram of the latch when the moving contact is knocked open by the electromagnetic mechanism during short circuit of the product according to the embodiment of the invention;

FIG. 9 is a diagram of the structure of the latch when the movable contact is knocked open by the electromagnetic mechanism and the contact flicks the handle and does not return when the product is in short circuit according to the embodiment of the invention;

FIG. 10 is a perspective view of a latch according to an embodiment of the present invention;

fig. 11 is a perspective view of a movable contact mounting according to an embodiment of the present invention;

FIG. 12 is a schematic view of the handle and the contact surface of the second end of the connecting rod after closing according to the embodiment of the present invention;

FIG. 13 is a force analysis diagram of FIG. 12.

Detailed Description

As shown in fig. 1-13, a latch device of a circuit breaker includes a movable contact mechanism 1, a latch 2, a handle 3 and a connecting rod 4, where the movable contact mechanism 1 includes a movable contact mounting seat 11 and a movable contact 12, 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, the upper end of the movable contact mounting seat 11 is provided with a chute 111, the chute 111 includes a bending portion 1111 and a straight portion 1112, one end of the bending portion 1111 is connected to the straight portion 1112, the other end of the bending portion 1111 is provided with a pressing surface 11111, a first end of the connecting rod 4 is connected to the handle 3, a second end of the connecting rod 4 is disposed in the chute 111, the upper end of the latch 2 is provided with a pressing arm 212, the pressing arm 212 cooperates with the bending portion 1111 of the chute 111 to lock the second end of the connecting rod 4 after the circuit breaker is disconnected, and a position of the first end of the, the height of the position is based on the position shown in the attached drawing 1, the handle 3 can be pushed to close the circuit breaker, and the second end of the connecting rod 4 is abutted against the abutting surface 11111 in the closing process of the handle 3; after the circuit breaker is switched on, the second end of the connecting rod 4 abuts against the abutting surface 11111, an included angle between a pushing force F1 direction of the handle 3 to the second end of the connecting rod 4 and an abutting force F2 direction of the abutting surface 11111 to the second end of the connecting rod 4 after the circuit breaker is switched on is always smaller than 180 degrees, as shown in fig. 12 and 13, a resultant force F3 generated by the pushing force F1 and the abutting force F2 to the second end of the connecting rod 4 is upward, the abutting arm 212 of the latch 2 abuts against the connecting rod 4, the abutting force of the abutting arm 212 to the second end of the connecting rod 4 and the resultant force F3 are balanced to realize that the second end of the connecting rod 4 is placed in the bent portion 1111 to abut against the abutting surface 11111, when the latch 2 moves, the latch 2 rotates, the abutting arm 212 loses the abutting against the second end of the connecting rod 4, and the second end of the connecting. By adopting the scheme, the second end of the connecting rod 4 is locked or unlocked in a new mode, and the switching-on or switching-off action of the circuit breaker is realized, so that the mode is convenient to install, stable in action and free from misoperation; after the circuit breaker is switched on, the second end of the connecting rod 4 abuts against the abutting surface 11111, at the moment, an included angle between the direction of the pushing force F1 of the handle 3 to the second end of the connecting rod 4 and the direction of the abutting force F2 of the abutting surface 11111 to the second end of the connecting rod 4 is smaller than 180 degrees, the purpose of the setting is that the pushing force F1 and the abutting force F2 counteract a part of resultant force F3 upwards, at the moment, the abutting arm 212 just abuts against the second end of the connecting rod 4, so that the second end of the connecting rod 4 can be well fixed at the chute bending portion 1111, in addition, after the latch 2 rotates the abutting arm 212 to leave the second end of the connecting rod 4, the resultant force F3 generated by the pushing force F1 and the abutting force F2 can push the second end of the connecting rod 4 to move upwards to enter the straight portion 1112 of the.

In the embodiment of the present invention, a toggle arm 213 is disposed below the pressing arm 212 of the latch 2, a fork 21 is formed between the pressing arm 212 and the toggle arm 213, the bottom of the fork 21 is U-shaped 211, an abutting surface 2111 is disposed on the upper side of the fork 21, a toggle surface 2112 is disposed on the lower side of the fork 21, an opening of the fork 21 is larger than the diameter of the second end of the connecting rod 4, when the abutting surface 2111 abuts against the second end of the connecting rod 4, the toggle surface 2112 leaves the second end of the connecting rod 4, and when the abutting surface 2111 leaves the second end of the connecting rod 4, the toggle surface 2112 can abut against the second end of the connecting rod 4. By adopting the scheme, the bottom of the fork opening 21 is in the U-shaped 211, so that after the breaker is disconnected, the second end of the connecting rod 4 can be well locked at the bent part 1111 of the sliding groove 111 by the U-shaped opening 211, and the second end of the connecting rod 4 is prevented from moving by a collision force generated between the collision surface 2111 and the second end of the connecting rod 4 in the closing process of the breaker, so that the second end of the connecting rod 4 is locked at the bent part 1111 under the condition that the lock catch 2 is not subjected to external force; the arm 213 is dialled when the circuit breaker need break off after closing a floodgate also can carry out supplementary stirring to connecting rod 4 second end, the problem that impurity can not move to the back circuit breaker of gluing of connecting rod 4 second end that can be fine prevents.

In the embodiment of the present invention, the pressing arm 212 and the toggle arm 213 are disposed in a staggered manner, a notch 112 is disposed above the sliding slot 111 of the movable contact mounting base 11, the pressing arm 212 can be placed in the notch 112, a boss 113 is disposed below the sliding slot 111 of the movable contact mounting base 11, the toggle arm 213 can be placed on an outer surface of the boss 113, and a portion of an upper side surface of the boss 113 and a lower side surface of the sliding slot bending portion 1111 are connected into a whole to form the pressing surface 11111. By adopting the scheme, the pressing arm 212 and the shifting arm 213 are arranged in a staggered manner, so that the connection and the matching between the pressing arm and the moving contact mounting seat 11 are more reasonable, and the size is small; the upper side of the boss 113 and the lower side of the chute bending portion 1111 are connected to form a pressing surface 11111, so that the pressing surface 11111 is as large as possible, and the second end of the connecting rod 4 is more stably matched with the pressing surface 11111.

In the embodiment of the present invention, an inclined plane 2121 for the second end of the connecting rod 4 to slide into the curved portion is disposed on the end of the pressing arm 212, a convex column 114 is disposed in the middle of the moving contact mounting seat 11, arc-shaped bosses 1141 are uniformly disposed around the convex column 114, a circular through hole 22 is disposed on the latch 2, the circular through hole 22 is sleeved on the periphery of the arc-shaped boss 1141 to realize the rotating fit between the latch 2 and the moving contact mounting seat 11, a dial 23 and an arc isolating sheet 24 are disposed below the latch 2, an inclined pushing plane 25 is disposed above the circular through hole 22 on the side of the latch 2, and an arc surface 26 for pushing the push rod of the circuit breaker release is disposed below the circular through hole 22 on the side of the latch; by adopting the above scheme, wherein the setting of inclined plane 2121 makes things convenient for connecting rod 4 second end to slide into the flexion 1111 of spout 111, certainly also can not set up inclined plane 2121, only set up arc transition angle, moving contact mount pad 11 and hasp 2 adopt above-mentioned mode to realize normal running fit, dust or impurity that prevents that so can be fine is sticky chain link 2 and moving contact mount pad 11, influence the normal work of circuit breaker, the plectrum 23 and the effect of isolating arc piece 24 that the below of hasp 2 set up are for two gold pull rod work and cut off the electric arc, the side of hasp 2 is located the top of circular through-hole 22 and is provided with oblique push surface 25, the purpose makes things convenient for the hasp push rod to promote, the side is located the below of circular through-hole 22 and is provided with the cambered surface 26 that supplies the release push rod to promote, aspect release promotes.