CN215418071U

CN215418071U - Mechanism for eliminating opening bounce of universal circuit breaker

Info

Publication number: CN215418071U
Application number: CN202121730755.9U
Authority: CN
Inventors: 杜吟; 王�忠; 侯魁; 李涛
Original assignee: Jiangsu Daquan Kaifan Switch Co ltd
Current assignee: Jiangsu Daquan Kaifan Switch Co ltd
Priority date: 2021-07-28
Filing date: 2021-07-28
Publication date: 2022-01-04
Anticipated expiration: 2031-07-28

Abstract

The utility model discloses a mechanism for eliminating the opening bounce of a universal circuit breaker, which comprises a circuit breaker base, a bounce-proof assembly and a main shaft assembly, wherein a main shaft cantilever strikes a lock catch, after the lock catch rotates, the main shaft continues to move towards the closing direction, the main shaft cantilever collides with the lock catch, and the main shaft assembly stops moving, so that the effect of eliminating the opening bounce is achieved, the lock catch is restored to a free state under the action of a reset torsion spring, the next closing is not influenced, and the bounce-proof assembly is very convenient to assemble and disassemble.

Description

Mechanism for eliminating opening bounce of universal circuit breaker

Technical Field

The utility model relates to the technical field of low-voltage electric appliances, in particular to a mechanism for eliminating opening bounce of a universal circuit breaker.

Background

The low-break universal circuit breaker is used as an important element in a low-voltage electrical appliance, and performance parameters of higher voltage and breaking current are provided for the low-voltage circuit breaker along with the industry, so that the brake-separating bounce is difficult to eliminate under the mechanism technical condition of the existing circuit breaker. If the brake-separating bounce effect is not good (at present, rebound of about 10mm can be generated without adding a bounce-proof structure in the industry), the circuit breaker can cause continuous arcing, and the condition of failure of the circuit breaker in breaking occurs.

For example, chinese patent publication No. CN211062674U discloses a moving contact linkage tripping circuit breaker, which comprises a contact system and an operating mechanism, wherein the contact system comprises a fixed contact, a moving contact, a rotating shaft, a contact torsion spring, a bouncing member, an elastic member and a drawbar; the one end of moving contact is located the top of static contact, the other end of moving contact articulates in the pivot, contact torsional spring one end is connected with the moving contact, the other end of contact torsional spring is connected in the pivot, the spring articulates in the pivot, the one end of spring links to each other with the moving contact, the other end of spring links to each other with the traction lever, the one end that the spring was kept away from to the traction lever links to each other with operating device, be connected with the elastic component on the spring, the one end that the spring was kept away from to the elastic component links to each other with the pivot, the pivot links to each other with operating device. The advantages are that: the operating mechanism and the moving contact realize structural linkage, and the moving contact drives the mechanism to act in the bouncing process due to the electric repulsion force, so that the contact is prevented from falling back before the mechanism acts after being repelled.

At present, the above patents have certain disadvantages in the actual operation process: although the operating mechanism and the moving contact realize structural linkage, the moving contact is driven to act by the driving mechanism in the bouncing process due to the electric repulsion force, and the phenomenon that the contact falls back before the mechanism acts after being repelled is avoided, in the actual operation process, the opening bouncing effect is poor, the circuit breaker can lead to continuous arcing, and the failure condition of the circuit breaker in opening and closing occurs.

SUMMERY OF THE UTILITY MODEL

Aiming at the defects of the prior art, the utility model provides a mechanism for eliminating the tripping bounce of a universal circuit breaker, which aims to solve the problems.

In order to achieve the purpose, the utility model is realized by the following technical scheme:

a mechanism for eliminating tripping bounce of a universal circuit breaker comprises a circuit breaker base, a bounce-proof component and a main shaft component, wherein the bounce-proof component is arranged on the circuit breaker base and comprises a left supporting piece, a lock catch, a right supporting piece, a lock catch limiting shaft, a lock catch rotating shaft, a lock catch reset torsion spring, a supporting shaft and a fixing screw, two ends of the lock catch limiting shaft, the lock catch rotating shaft and the supporting shaft are respectively connected with the left supporting piece and the right supporting piece, the lock catch reset torsion spring is arranged on the lock catch rotating shaft, the lock catch is arranged on the lock catch rotating shaft, a through hole is formed in the lock catch, fixing devices are respectively arranged on the upper part, the middle part and the lower part of the bounce-proof component, a main shaft cantilever can strike the lock catch in the process that the main shaft moves to a tripping position, after the lock catch rotates to a certain position, the main shaft can continue to move in a switching-on direction after moving to the tripping position, and the main shaft cantilever just collides with the lock catch, at the moment, the main shaft assembly stops moving towards the closing direction continuously, so that the effect of eliminating the switch-off bounce is achieved.

Preferably, hasp reset torsion spring upper portion is provided with straight torsion arm, and is connected with the through-hole on the hasp, hasp reset torsion spring lower part is provided with straight arm, sets up on the main shaft, and the hasp resumes free state under the effect of hasp reset torsion spring, does not influence next combined floodgate.

Preferably, the two ends of the lock catch limiting shaft, the lock catch rotating shaft and the support shaft are respectively connected with the left support piece and the right support piece in a riveting mode.

Preferably, the anti-bounce component is connected with the circuit breaker base through a fixing device, the fixing device is a screw, the anti-bounce component is very convenient to assemble and disassemble, and only three screws are needed.

Preferably, the main shaft assembly comprises a main shaft and a main shaft cantilever, the main shaft is arranged on the circuit breaker base, and the main shaft cantilever is arranged on the main shaft.

Compared with the prior art, the device has the advantages that: the utility model provides an eliminate conventional circuit breaker separating brake spring mechanism includes circuit breaker base, shellproof jump subassembly, main shaft assembly, and the hasp is beaten to the main shaft cantilever, and the hasp rotates the back, and the main shaft continues the motion toward closing a floodgate direction, and the main shaft cantilever collides with the hasp, and main shaft assembly stop motion to reach the effect of eliminating separating brake spring, and the hasp resumes free state under the effect of reset torsion spring, does not influence next combined floodgate, and the shellproof jump subassembly of dismouting is very convenient.

Drawings

FIG. 1 is a schematic structural diagram of a mechanism for eliminating the tripping bounce of a universal circuit breaker according to the present invention;

FIG. 2 is an exploded view of the mechanism for eliminating the tripping bounce of the universal circuit breaker according to the present invention;

FIG. 3 is a schematic structural view of a bounce prevention assembly of the present invention;

FIG. 4 is a schematic structural view of the spindle assembly of the present invention;

FIG. 5 is a schematic structural diagram of a closing state of the present invention;

FIG. 6 is a structural sectional view showing a first opening state of the present invention;

FIG. 7 is a structural sectional view showing a second state of opening the brake according to the present invention;

FIG. 8 is a structural sectional view showing a third state of the present invention;

fig. 9 is a schematic view of the installation position of the return torsion spring of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

The utility model provides a technical scheme that: a mechanism for eliminating the tripping bounce of a universal circuit breaker comprises a circuit breaker base 1, a bounce-proof component 2 and a main shaft component 3, wherein the bounce-proof component 2 is arranged on the circuit breaker base 1 and comprises a left supporting piece 201, a latch 202, a right supporting piece 203, a latch limiting shaft 204, a latch rotating shaft 205, a latch resetting torsion spring 206, a supporting shaft 207 and a fixing device 208, two ends of the latch limiting shaft 204, the latch rotating shaft 205 and the supporting shaft 207 are respectively connected with the left supporting piece 201 and the right supporting piece 203, the latch resetting torsion spring 206 is arranged on the latch rotating shaft 205, the latch 202 is arranged on the latch rotating shaft 205, a through hole is arranged on the latch 202, the fixing device 208 is respectively arranged on the upper part, the middle part and the lower part of the bounce-proof component 2, in the process that the main shaft 301 moves to a tripping position, the main shaft cantilever 302 can strike the latch 202, and the latch 202 rotates a certain position, the main shaft 301 moves to the opening position and then continues to move in the closing direction, at this time, the main shaft cantilever 302 just collides with the latch 202, and at this time, the main shaft assembly 3 stops continuing to move in the closing direction, so that the effect of eliminating the opening bounce is achieved. The upper portion of the lock catch reset torsion spring 206 is provided with a straight torsion arm and is connected with the through hole in the lock catch 202, the lower portion of the lock catch reset torsion spring 206 is provided with a straight arm and is erected on the main shaft 301, and the lock catch 202 is restored to a free state under the action of the lock catch reset torsion spring 206, so that the next closing is not affected. The two ends of the lock catch limiting shaft 204, the lock catch rotating shaft 205 and the support shaft 207 are respectively connected with the left support member 201 and the right support member 203 in a riveting mode. The anti-bounce component 2 is connected with the circuit breaker base 1 through the fixing device 208, the fixing device 208 is a screw, the anti-bounce component 2 is very convenient to assemble and disassemble, and only three screws are needed. The spindle assembly 3 comprises a spindle 301 and a spindle cantilever 302, wherein the spindle 301 is arranged on the circuit breaker base 1, and the spindle cantilever 302 is arranged on the spindle 301.

As shown in fig. 1 and fig. 2, the main shaft assembly 3 is disposed on the circuit breaker base 1, and then the anti-bounce assembly 2 is sleeved on the main shaft assembly 3 and fixed on the circuit breaker base 1 through the fixing device 208.

As shown in fig. 3, the right supporting member 203 is taken as a reference member, and the latch limiting shaft 204, the latch rotating shaft 205 and the supporting shaft 207 are respectively mounted on the right supporting member 203; the lock catch reset torsion spring 206 is arranged on the lock catch rotating shaft 205, then the lock catch 202 is also arranged on the lock catch rotating shaft 205, and meanwhile, one end of the lock catch reset torsion spring 206 is embedded into the through hole of the lock catch 202; finally, the left support member 201 is installed, and the latch limiting shaft 204, the latch rotating shaft 205 and the support shaft 207 are riveted on the exposed part of the anti-bounce component 2.

As shown in fig. 4, spindle cantilever 302 is secured to spindle 301 by means including, but not limited to, welding.

As shown in fig. 5, the closing state: when the circuit breaker is in the closed position, the latch 202 is rotated counterclockwise by the force provided by the latch return torsion spring 206, and the latch 202 is stopped by the latch stop shaft 204.

As shown in fig. 6 and 7, the first switching state and the second switching state: in fig. 6, the main shaft assembly 3 moves counterclockwise by a preset angle in the opening process and stops, and strikes the latch 202 in the movement process, at this time, the latch 202 rotates clockwise, the speed of rotation of the latch 202 is related to the impact force generated and the counter force provided by the latch reset torsion spring 206, when the latch 202 rotates as in the position shown in fig. 7, the main shaft assembly 3 rotates clockwise due to the movement rebound inertia of the circuit breaker, at this time, the main shaft cantilever 302 just strikes the latch 202, the main shaft assembly 3 stops clockwise movement, and the opening bounce is immediately eliminated.

As shown in fig. 8, the third switching state: the latch 202 returns to the state shown in fig. 5 under the action of the latch return torsion spring 206, and the next closing of the circuit breaker is not affected.

As shown in FIG. 9, the latch return torsion spring 206 has one end mounted to the latch 202 and the other end mounted to the spindle 301.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. The utility model provides an eliminate conventional circuit breaker separating brake spring mechanism which characterized in that: comprises a circuit breaker base (1), a bounce-proof component (2) and a main shaft component (3), the anti-bounce component (2) is arranged on the circuit breaker base (1) and comprises a left supporting piece (201), a lock catch (202), a right supporting piece (203), a lock catch limiting shaft (204), a lock catch rotating shaft (205), a lock catch reset torsion spring (206), a supporting shaft (207) and a fixing device (208), the two ends of the lock catch limiting shaft (204), the lock catch rotating shaft (205) and the supporting shaft (207) are respectively connected with the left supporting piece (201) and the right supporting piece (203), the lock catch reset torsion spring (206) is arranged on the lock catch rotating shaft (205), the lock catch (202) is arranged on the lock catch rotating shaft (205), and a through hole is arranged on the lock catch (202), and fixing devices (208) are respectively arranged on the upper part, the middle part and the lower part of the anti-bounce component (2).

2. The mechanism of claim 1, wherein the mechanism further comprises: hasp reset torsion spring (206) upper portion is provided with straight torsion arm, and is connected with the through-hole on hasp (202), hasp reset torsion spring (206) lower part is provided with straight arm, sets up on main shaft subassembly (3).

3. The mechanism of claim 1, wherein the mechanism further comprises: the two ends of the lock catch limiting shaft (204), the lock catch rotating shaft (205) and the support shaft (207) are respectively connected with the left support piece (201) and the right support piece (203) in a riveting mode.

4. The mechanism of claim 1, wherein the mechanism further comprises: the anti-bounce component (2) is connected with the circuit breaker base (1) through a fixing device (208).

5. The mechanism of claim 1, wherein the mechanism further comprises: the spindle assembly (3) comprises a spindle (301) and a spindle cantilever (302).

6. The mechanism of claim 5 for eliminating the tripping bounce of a conventional circuit breaker, which is characterized in that: the main shaft (301) is arranged on the circuit breaker base (1), and the main shaft cantilever (302) is arranged on the main shaft (301).