CN219696372U - Operating mechanism for low-voltage circuit breaker - Google Patents

Abstract

The utility model discloses an operating mechanism for a low-voltage circuit breaker, which comprises a shell, wherein a handle is arranged on the shell, one end of the handle is exposed out of the shell, the other end of the handle is arranged in the shell, a transmission part for controlling a brake contact to approach or separate from a static contact is rotatably arranged in the shell, an energy storage unit is matched on the transmission part, the handle is in transmission connection with the transmission part through a connecting arm, a lock catch is arranged in the shell in a swinging manner between the handle and the transmission part, one end of the lock catch, which is close to the transmission part, is a locking end, the other end of the lock catch is an abutting end, the locking end is provided with a buckle, a limit block is arranged on the transmission part corresponding to the position of the buckle, the buckle and the limit block are clamped to form a limit of the lock catch on the transmission part to rotate the split-gate circuit breaker, a reset spring is abutted between the abutting end and the inner wall of the shell, and an abutting flange is arranged on the handle. The switching-on/switching-off device is simple in structure, smooth and light in operation, high in structural stability and good in use effect.

Description

Operating mechanism for low-voltage circuit breaker

Technical Field

The present utility model relates to an operating mechanism for a low voltage circuit breaker.

Background

A circuit breaker refers to a switching device capable of closing, carrying and opening a current under normal circuit conditions and closing, carrying and opening a current under abnormal circuit conditions within a prescribed time. The circuit breaker is classified into a high voltage circuit breaker and a low voltage circuit breaker according to its use range. The existing low-voltage circuit breaker is mainly operated to switch on and off through a handle, when the switching on and off is operated, the operating handle rotates positively to drive the transmission part to rotate through the connecting arm, in the rotation process of the transmission part, the energy storage component on the transmission part stores energy, the moving contact is abutted against the static contact, and when the switching on and off is operated, the operating handle rotates reversely, so that the locking component connected to the handle and the transmission part are tripped, the transmission part rotates reversely under the drive of the energy storage component, and tripping is realized, and switching on and off actions are completed; at present, when the handle is switched on, the locking component on the handle realizes the limit to the rotation of the transmission part through the friction with the transmission part, and this kind of frictional mode for the operation handle needs great power when acting, and under long-time use, the frictional force between them constantly changes, leads to connecting unstable condition, influences overall structure's use reliability, and along with the friction aggravates, makes the handle have the transmission part between to appear becoming flexible, appears unexpected trip's possibility, influences safety in utilization.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides an operating mechanism for a low-voltage circuit breaker, which has the advantages of simple structure, smoother and lighter operation of opening and closing, strong structural stability and good use effect.

In order to achieve the above purpose, the utility model provides an operating mechanism for a low-voltage circuit breaker, which comprises a shell, wherein a handle is arranged on the shell, one end of the handle is exposed out of the shell, the other end of the handle is arranged in the shell, a transmission part for controlling a brake contact to approach or separate from a static contact is rotatably arranged in the shell, an energy storage unit is matched on the transmission part, the handle is in transmission connection with the transmission part through a connecting arm, a lock catch is arranged in the shell in a swinging manner between the handle and the transmission part, one end of the lock catch, which is close to the transmission part, is a locking end, the other end of the lock catch is an abutting end, the locking end is provided with a buckle, a limiting block is arranged on the transmission part corresponding to the position of the buckle, the buckle and the limiting block are in clamping connection to form a limit of the lock catch to the transmission part, a reset spring for resetting the buckle and the limiting block in a clamping manner is in an abutting manner, and an abutting flange for enabling the buckle to be separated from the limiting block is arranged on the handle.

The beneficial effects of the arrangement are that, by adopting the scheme, when the operation is switched on, the transmission piece is driven to rotate through the operation handle to drive the connecting arm to rotate, so that the energy storage unit deforms to store energy, the energy storage unit can be a spring plate, a reed or a torsion spring and the like, in the process of swinging the handle, the abutting flange on the handle leaves the abutting end of the lock catch, the lock catch is reset under the action of the reset spring, the lock catch on the lock catch is clamped with the limiting block on the transmission piece after rotation, thereby limiting the reset rotation of the transmission piece is formed, and meanwhile, the whole circuit breaker is also ensured to be in a switching-on state; when the operation brake separating, through reverse pulling the handle, actuating handle reverses, the conflict flange that makes on the handle is contradicted at the conflict end of hasp, make the buckle of hasp break away from the stopper position, release the spacing to the driving medium pivoted, make under the effect of the energy storage unit of driving medium, it breaks away from the static contact position to drive the movable contact fast, this kind of simple structure can realize quick tripping, effect is efficient, further compare with traditional friction structure, make the operation unblock more light, increase user's use experience, and the buckle structure is spacing than traditional friction is spacing, spacing more stable, the structure is also very reliable, have good result of use.

As a further arrangement of the utility model, the end face of the lock catch abutting end, which faces towards the abutting flange, is provided with an abutting step.

The beneficial effect that sets up like this is, adopts above-mentioned scheme, further improves the stability of contradicting, guarantees that the conflict flange can form the pivoted drive to the hasp through contradicting the conflict step, guarantees the breaking away from of buckle and stopper for the driving medium can rotate under the effect of energy storage unit, realizes separating brake action, and this kind of simple structure does benefit to the realization, has good result of use.

As a further arrangement of the utility model, the interference step side wall is connected to the catch by an inclined wall.

The beneficial effect that sets up like this is, adopts above-mentioned scheme, and guide conflict flange that can be better removes the hasp and corresponds the position, guarantees the conflict effect, can warp the hasp to realize breaking away from of buckle and stopper, make the driving medium can rotate under the effect of energy storage unit, thereby realize separating brake operation, this kind of simple structure, it is practical reliable, have good result of use.

As a further arrangement of the utility model, the end face of the lock catch abutting end, which is opposite to the handle, is provided with a positioning flange, a positioning groove is arranged in the shell corresponding to the positioning flange, one end of the return spring is sleeved on the positioning flange, and the other end of the return spring abuts against the positioning groove.

The beneficial effect of setting like this is, adopts above-mentioned scheme, further improves the stability of reset spring position, avoids reset spring off tracking, guarantees the reliability that positioning spring used.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present utility model;

FIG. 2 is an enlarged view of a portion A of FIG. 1 according to an embodiment of the present utility model;

fig. 3 is a schematic diagram of the handle, latch and driving member of the present utility model.

Detailed Description

An embodiment of an operating mechanism for a low voltage circuit breaker according to the present utility model is shown in fig. 1 to 3: including casing 1, be provided with handle 2 on the casing 1, handle 2 one end exposes outside casing 1, and the other end sets up in casing 1, the rotation is provided with the driving medium 4 that is used for controlling braking contact to be close to or keep away from the static contact in casing 1, it has the energy storage unit to cooperate on the driving medium 4, handle 2 passes through the linking arm transmission with driving medium 4 and is connected, the swing is provided with hasp 3 in casing 1 between handle 2 and driving medium 4, the one end that hasp 3 is close to driving medium 4 is the locking end, and the other end is the conflict end, the locking end is provided with buckle 31, the position that corresponds buckle 31 on driving medium 4 is provided with stopper 41, buckle 31 and stopper 41 joint form the spacing that hasp 3 rotated the break brake circuit breaker to driving medium 4, it has reset spring 34 that is used for resetting between hasp 3 and the stopper 41 joint to contradict between the inner wall to contradict, be provided with on handle 2 and be used for contradicting the end to make buckle 31 break away from the conflict flange of stopper 41. The beneficial effects of the arrangement are that, adopting the above scheme, when the operation is switched on, the transmission piece 4 is driven to rotate through the operation handle 2 to rotate through the connecting arm, so that the energy storage unit deforms to store energy, the energy storage unit can be a spring plate, a reed or a torsion spring and other structures, in the swinging process of the handle 2, the abutting flange on the handle 2 leaves the abutting end of the lock catch 3, the lock catch 3 resets under the action of the reset spring 34, so that the buckle 31 on the lock catch 3 is clamped with the limiting block 41 on the transmission piece 4 after rotation, thereby limiting the reset rotation of the transmission piece 4, and simultaneously ensuring that the whole circuit breaker is in a switching-on state; when the operation brake separating, through reverse pulling handle 2, actuating handle 2 reverses, the conflict flange conflict on the handle 2 is at the conflict end of hasp 3, make the buckle 31 of hasp 3 break away from stopper 41 position, remove spacing to driving medium 4 pivoted, make under the effect of the energy storage unit of driving medium 4, it breaks away from quiet contact position to drive the movable contact piece fast, this kind of simple structure, can realize quick tripping, effect efficiency is high, further compare with traditional friction structure, make the operation unblock more light, increase user's use experience, and buckle 31 structure is spacing than traditional friction, spacing is more stable, the structure is also very reliable, good result of use has.

As a further arrangement of this embodiment, an abutting step 32 is formed on an end face of the abutting end of the lock catch 3 facing the abutting flange. The beneficial effect that sets up like this is, adopts above-mentioned scheme, further improves the stability of contradicting, guarantees that the conflict flange can form the pivoted drive to hasp 3 through contradicting conflict step 32, guarantees the breaking away from of buckle 31 and stopper 41 for driving medium 4 can rotate under the effect of energy storage unit, realizes separating brake action, and this kind of simple structure does benefit to the realization, has good result of use.

As a further arrangement of this embodiment, the side walls of the interference step 32 are connected to the shackle 3 by inclined walls. The beneficial effect that sets up like this is, adopts above-mentioned scheme, and guide conflict flange that can be better removes hasp 3 corresponds the position, guarantees the conflict effect, can with hasp 3 perk to realize breaking away from of buckle 31 and stopper 41, make driving medium 4 can rotate under the effect of energy storage unit, thereby realize the brake operation of separating, this kind of simple structure, it is practical reliable, have good result of use.

As a further arrangement of this embodiment, a positioning flange 33 is provided on the end surface of the abutting end of the lock catch 3, which is opposite to the handle 2, a positioning groove 11 is provided in the housing 1 corresponding to the positioning flange 33, one end of the return spring 34 is sleeved on the positioning flange 33, and the other end abuts in the positioning groove 11. The beneficial effect of setting like this is, adopts above-mentioned scheme, further improves the stability of reset spring 34 position, avoids reset spring 34 off tracking, guarantees the reliability that positioning spring used.

The above examples are only one of the preferred embodiments of the present utility model, and the ordinary changes and substitutions made by those skilled in the art within the scope of the technical solution of the present utility model are included in the scope of the present utility model.

Claims (4)

1. The utility model provides an operating device for low voltage circuit breaker, includes the casing, be provided with the handle on the casing, handle one end exposes outside the casing, and the other end sets up in the casing, rotate in the casing and be provided with the driving medium that is used for controlling braking contact to be close to or keep away from the static contact, the cooperation has the energy storage unit on the driving medium, the handle passes through the linking arm transmission with the driving medium and is connected, its characterized in that: the swing is provided with the hasp in the casing between handle and driving medium, the one end that the hasp is close to the driving medium is the locking end, and the other end is the conflict end, the locking end is provided with the buckle, it is provided with the stopper to correspond the buckle position on the driving medium, the buckle forms the spacing that the hasp rotated separating brake circuit breaker to the driving medium with the stopper joint, it has the reset spring that is used for resetting the hasp and makes buckle and stopper joint to contradict between conflict end and the shells inner wall, be provided with the conflict flange that is used for contradicting conflict end and makes the buckle break away from the stopper on the handle.

2. The operating mechanism for a low voltage circuit breaker of claim 1, wherein: an abutting step is formed on the end face, facing the abutting flange, of the locking catch abutting end.

3. The operating mechanism for a low voltage circuit breaker of claim 2, wherein: the side wall of the interference step is connected with the lock catch through an inclined wall.

4. An operating mechanism for a low voltage circuit breaker according to claim 1 or 2 or 3, characterized in that: the end face of the lock catch abutting end, which is opposite to the handle, is provided with a positioning flange, a positioning groove is formed in the shell corresponding to the positioning flange, one end of the reset spring is sleeved on the positioning flange, and the other end of the reset spring abuts against the positioning groove.