CN218471875U

CN218471875U - Circuit breaker pivot convenient to installation

Info

Publication number: CN218471875U
Application number: CN202222824665.7U
Authority: CN
Inventors: 连成龙; 管光春; 刘倩倩
Original assignee: Zhejiang Zhenhua Electronics Co ltd
Current assignee: Zhejiang Zhenhua Electronics Co ltd
Priority date: 2022-10-25
Filing date: 2022-10-25
Publication date: 2023-02-10
Anticipated expiration: 2032-10-25

Abstract

The utility model relates to a circuit breaker pivot convenient to installation relates to the technical field of circuit breaker, and it includes the body, the first through-hole that supplies the movable contact spring to run through is seted up at the middle part of body, the spacing groove that supplies movable contact spring side conflict is seted up to the side of body, the medial surface of first through-hole is equipped with the screens subassembly, the screens subassembly is including setting up in a plurality of dead levers at first through-hole opening border, the lateral surface cover of dead lever is equipped with the pressure spring, the side of movable contact spring is contradicted with the tip of pressure spring. This application extrudees the conflict through the side of a plurality of pressure springs to the movable contact spring, and the atress of movable contact spring is more even, reduces the movable contact spring and removes the possibility that the skew appears in-process, avoids the conflict dislocation of pressure spring and movable contact spring, and the reinforcing movable contact spring is removing the stability of in-process.

Description

Circuit breaker pivot convenient to installation

Technical Field

The application relates to the technical field of circuit breakers, in particular to a circuit breaker rotating shaft convenient to install.

Background

Circuit breakers are an important component of the electrical industry and have found widespread use. When the circuit works normally, the circuit breaker can achieve the functions of power failure, power supply, circuit conversion and the like by closing or opening a circuit for supplying electric energy. When the circuit has faults of overload, voltage loss, undervoltage or short circuit and the like, the circuit breaker can automatically cut off the circuit, so that the safety of workers and the normal operation of equipment are prevented from being endangered due to the circuit faults.

Among the correlation technique, a moulded case circuit breaker's pivot, during staff need pack into the pivot with manual such as movable contact spring, torsional spring, cylindric lock when the equipment, wherein the through-hole that supplies the movable contact spring to run through is seted up at the middle part of pivot, and the tip of torsional spring is contradicted with the side of movable contact spring, then installs the pivot in moulded case circuit breaker's the installation cavity, installs the pivot with the cooperation of other components and parts of circuit breaker at last.

In the above-mentioned correlation technique, the one end of torsional spring is fixed in the side of pivot, and the other end of torsional spring is contradicted with the side of movable contact spring, but the torsional spring produces the skew easily at the conflict in-process, and then makes the conflict dislocation of torsional spring and movable contact spring, makes the drive power transmission between operating device and the contact support unbalanced, leads to movable contact spring device stroke position to change to produce the clearance in cooperation department, influence customer's safe power consumption.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a circuit breaker pivot convenient to installation solves the problem that the installation cooperation of torsional spring and movable contact spring misplaces easily among the above-mentioned correlation technique.

The application provides a circuit breaker pivot convenient to installation adopts following technical scheme:

the utility model provides a circuit breaker pivot convenient to installation, includes the body, the first through-hole that supplies the movable contact spring to run through is seted up at the middle part of body, the spacing groove that supplies movable contact spring side conflict is seted up to the side of body, the medial surface of first through-hole is equipped with the screens subassembly, the screens subassembly is including setting up in a plurality of dead levers at first through-hole opening border, the lateral surface cover of dead lever is equipped with the pressure spring, the side of movable contact spring is contradicted with the tip of pressure spring.

Through adopting above-mentioned technical scheme, in the course of the work of movable contact spring, a plurality of pressure spring cover is equipped with in the dead lever outside that corresponds, and the tip that the pressure spring is close to the movable contact spring is contradicted with the side of movable contact spring, the side of pressing the movable contact spring through a plurality of pressure springs is contradicted, the atress of movable contact spring is more even, reduce the movable contact spring and remove the possibility that the in-process skew appears, avoid the conflict dislocation of pressure spring and movable contact spring, reinforcing movable contact spring is at the stability of removal in-process.

Optionally, one end of the fixing rod is hinged to the inner side wall of the first through hole, and the other end of the fixing rod is clamped with the inner side wall of the limiting groove.

Through adopting above-mentioned technical scheme, through the articulated setting with the other end joint of dead lever one end, be convenient for to the countershaft tear open and install, when a certain part of this pivot goes wrong, the accessible dead lever is torn open fast to this pivot and is examined or change, improves the equipment and the dismantlement efficiency of pivot.

Optionally, the cross-sectional shape of the fixing rod is an arc.

Through adopting above-mentioned technical scheme, the cross sectional shape of dead lever is the arc, and the pressure spring is because the lateral surface at the dead lever is established to the cover, so the pressure spring is at compression or resilience in-process along the camber line direction of dead lever, through the arc setting of dead lever, makes the movable contact still keep with the conflict extrusion of the biggest area of pressure spring tip moving the in-process, the buffering effect of reinforcing pressure spring and the extrusion effect to the movable contact.

Optionally, the clamping assembly further comprises a contact plate sleeved on the fixing rod.

Through adopting above-mentioned technical scheme, the cover is equipped with the touch panel on the dead lever, and the side of going up and the downside of touch panel are contradicted with the tip of pressure spring and the side of movable contact spring respectively, through the setting of touch panel, avoids the movable contact spring because long-time atress all receives the extrusion damage, makes the movable contact spring receive the conflict extrusion force of pressure spring more even.

Optionally, a first annular groove for embedding the end part of the compression spring is formed in the side face, close to the compression spring, of the abutting plate.

Through adopting above-mentioned technical scheme, first annular has been seted up to the side of conflict board, and the pressure spring cover is equipped with when the fixed plate, and inside the tip that the pressure spring is close to the movable contact spring was embedded into the first annular that corresponds, reduced the pressure spring and squinted in compression or recovery process appearance, strengthened pressure spring and dead lever complex stability simultaneously.

Optionally, a guide block is arranged on the side surface of the touch panel, and a guide groove for the guide block to insert and slide is formed in the inner side wall of the first through hole.

Through adopting above-mentioned technical scheme, guide block and guide way sliding connection, conflict board are at the removal in-process of dead lever, and the guide block slides along the length direction of guide way, avoids simultaneously to touch panel skew appearing in the removal in-process along fixed rod length direction to this reinforcing touches panel and dead lever complex stability.

Optionally, a non-slip pad is arranged on the side surface of the contact plate, which is back to the pressure spring.

Through adopting above-mentioned technical scheme, one side and the conflict board fixed connection of slipmat, the opposite side of slipmat is contradicted with the side of movable contact spring, because the slipmat has certain elastic deformation performance, and the coefficient of friction of rubber is great, increases the frictional force of slipmat and movable contact spring, avoids the movable contact spring to make the in-process appear becoming flexible moving, further strengthens the stability of movable contact spring at the removal in-process.

Optionally, a protruding portion is arranged at the side of the body close to the edge of the limiting groove.

Through adopting above-mentioned technical scheme, the side of body is provided with the protruding part, and wherein the protruding part is located the border position of spacing groove, and the side of movable contact spring back to the pressure spring is contradicted with the protruding part to this increase spacing inslot wall receives the lifting surface area of movable contact spring pressure, reduces the average atress of spacing groove side unit area, with this life who improves this pivot.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the side of the movable contact piece is extruded and abutted through the plurality of pressure springs, the stress of the movable contact piece is more uniform, the possibility of deviation of the movable contact piece in the moving process is reduced, the abutting dislocation of the pressure springs and the movable contact piece is avoided, and the stability of the movable contact piece in the moving process is enhanced. Through the articulated setting of dead lever, be convenient for carry out the unwrapping wire and installation to the pivot, improve the equipment and the dismantlement efficiency of pivot.

2. Through the setting of abutting against the touch panel, avoid the movable contact piece to receive the extrusion damage owing to long-time atress is uneven, make the movable contact piece receive the conflict extrusion force of pressure spring more even.

Drawings

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

FIG. 2 is a schematic illustration of an explosive structure according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of the main body of the embodiment of the present application;

FIG. 4 is a schematic diagram of a structure embodying the engagement of the detent assembly in the embodiment of the present application;

fig. 5 is a schematic cross-sectional structure diagram of an embodiment of the present application.

In the figure, 1, a body; 11. a first through hole; 111. a guide groove; 12. a second through hole; 13. a third through hole; 14. a bump; 15. a limiting groove; 151. a card slot; 16. a protrusion; 17. positioning a rod; 2. a movable contact piece; 3. a clamping component; 31. fixing the rod; 311. a clamping block; 32. a pressure spring; 33. a touch plate; 331. a through groove; 332. a first ring groove; 333. a guide block; 34. a non-slip mat.

Detailed Description

The present application will now be described in further detail with reference to the accompanying drawings.

Example (b):

referring to fig. 1, a circuit breaker rotating shaft convenient to install comprises a body 1, a corresponding movable contact piece 2 is installed in the middle of the body 1, and a first through hole 11 for the movable contact piece 2 to penetrate through is formed in the middle of the body 1.

Referring to fig. 2 and 3, a positioning rod 17 is arranged on the side surface of the main body 1, and meanwhile, third through holes 13 and second through holes 12 for the positioning rod 17 to penetrate through are formed in the upper side surface and the lower side surface of the main body 1, wherein the two third through holes 13 are oppositely arranged on the same side surface, a bump 14 is arranged on each of the upper surface and the lower surface of the main body, and the bump 14 is in plug-in fit with a shell of the circuit breaker; the side of the body 1 is provided with a limit groove 15, and the limit groove 15 is communicated with the first through hole 11 and is abutted against the side of the movable contact piece 2.

Referring to fig. 4 and 5, a clamping assembly 3 is arranged inside the first through hole 11, wherein the clamping assembly 3 includes four fixing rods 31, two fixing rods 31 are respectively arranged at openings at two sides of the first through hole 11, and a pressure spring 32 is sleeved on an outer side surface of each fixing rod 31, wherein each fixing rod 31 is hinged to an inner side wall of the first through hole 11 through a hinge rod, a clamping block 311 is arranged at the other end of each fixing rod 31, and a clamping groove 151 for embedding the clamping block 311 is arranged on a side surface of the limiting groove 15, so that the fixing rods 31 and the pressure spring 32 are mounted and fixed; in the process that the pressure spring 32 butts against the movable contact piece 2, the end part of the pressure spring 32 butts against the side surface of the movable contact piece 2, so that the movable contact piece 2 is extruded, and the limit looseness of the movable contact piece 2 is avoided.

Referring to fig. 4 and 5, the overall shape of the fixing rod 31 is arc-shaped, and meanwhile, the pressure spring 32 is also sleeved on the outer side surface of the fixing rod 31 along the length direction of the arc-shaped fixing rod 31, so that the movable contact piece 2 still keeps the maximum area of the end of the pressure spring 32 in the moving process to be in collision extrusion through the arc-shaped arrangement of the fixing rod 31, and the buffering effect of the pressure spring 32 and the extrusion effect of the movable contact piece 2 are enhanced.

Referring to fig. 4 and 5, the locking assembly 3 further includes a contact plate 33, and a through slot 331 for the fixing rod 31 to pass through is formed on a side surface of the contact plate 33. Two side surfaces of the abutting plate 33 abut against the movable contact piece 2 and the end part of the pressure spring 32 respectively; when the movable contact piece 2 is extruded, the upper side surface of the abutting plate 33 abuts against the side surface of the movable contact piece 2, so that the clamping component 3 has an extrusion force application area on the movable contact piece 2, and the extrusion force of the pressure spring 32 on the movable contact piece 2 is more uniform.

Referring to fig. 5, a first ring groove 332 for embedding the end portion of the pressure spring 32 is formed in the side, back to the limiting groove 15, of the contact plate 33, in the installation process of the pressure spring 32, the contact plate 33 is sleeved with the corresponding fixing rod 31, then the contact plate 33 is sleeved with the fixing rod 31, the end portion, close to the movable contact piece 2, of the pressure spring 32 is embedded into the first ring groove 332, and the pressure spring 32 is further fixed through the completion, so that the installation stability of the pressure spring 32 on the outer side of the fixing rod 31 is enhanced.

Referring to fig. 3 and 4, the two side surfaces of the touch panel 33 are provided with the guide blocks 333, the guide blocks 333 are made of plastic with certain elastic deformation capacity, the inner side wall of the first through hole 11 is provided with the guide groove 111 along the arc direction of the fixing rod 31, the guide blocks 333 are inserted into the guide groove 111 and are in sliding connection with the guide groove 111, in the moving process of the movable contact piece 2, the touch panel 33 is driven to move along the length direction of the fixing rod 31, and meanwhile, the guide blocks 333 on the side surfaces of the touch panel 33 move along the direction of the guide groove 111, so that the touch panel 33 is further limited, and the stability of the touch panel 33 in the moving process is enhanced. The side of the contact plate 33, which faces away from the pressure spring 32, is fixedly connected with a non-slip pad 34 through glue, the non-slip pad 34 is made of rubber, and the stability of the movable contact piece 2 in the moving process is further enhanced through the arrangement of the non-slip pad 34.

Referring to fig. 5, the side of the main body 1 close to the edge of the limiting groove 15 is provided with a protruding part 16, wherein the side of the movable contact piece 2 facing away from the pressure spring 32 is abutted against the side of the protruding part 16, so as to increase the stressed area of the inner side wall of the limiting groove 15, which is stressed by the movable contact piece 2, and reduce the average stress of the unit area of the side of the limiting groove 15, thereby prolonging the service life of the rotating shaft.

The implementation principle of the embodiment of the application is as follows:

firstly, the assembly of the rotating shaft is completed, the pressure spring 32 is firstly sleeved on the outer side of the fixing rod 31, the abutting plate 33 and the non-slip pad 34 are fixedly connected through glue, then the abutting plate 33 is sleeved on the outer side of the fixing rod 31, the other end of the pressure spring 32 is embedded into the first annular groove 332, then the fixing rod 31 is rotated, the clamping block 311 at the end part of the fixing rod 31 is embedded into the corresponding clamping groove 151, meanwhile, the guide blocks 333 at the two sides of the abutting plate 33 are inserted into the corresponding guide grooves 111, and the assembly of the clamping component 3 is completed.

The embodiments of the present disclosure are all preferred embodiments of the present disclosure, and the protection scope of the present disclosure is not limited thereby, wherein like parts are designated by like reference numerals. Therefore, the method comprises the following steps: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. A circuit breaker rotating shaft convenient to mount comprises a body (1), wherein a first through hole (11) for a movable contact piece (2) to penetrate through is formed in the middle of the body (1), and a limiting groove (15) for the side face of the movable contact piece (2) to abut against is formed in the side face of the body (1);

the movable contact spring is characterized in that a clamping component (3) is arranged on the inner side face of the first through hole (11), the clamping component (3) comprises a plurality of fixing rods (31) arranged on the opening edge of the first through hole (11), a pressure spring (32) is sleeved on the outer side face of each fixing rod (31), and the side face of the movable contact spring (2) is abutted to the end portion of the pressure spring (32).

2. The easy-to-mount rotary shaft for a circuit breaker according to claim 1, wherein one end of the fixing rod (31) is hinged to the inner side wall of the first through hole (11), and the other end of the fixing rod (31) is clamped with the inner side wall of the limiting groove (15).

3. An easily installable rotary shaft for a circuit breaker according to claim 2, wherein the cross-sectional shape of the fixing rod (31) is an arc.

4. The conveniently installed rotary shaft of circuit breaker according to claim 1, wherein said locking assembly (3) further comprises a contact plate (33) sleeved on the fixing rod (31).

5. The easy-to-mount circuit breaker rotating shaft as claimed in claim 4, wherein the side of the contact plate (33) close to the compression spring (32) is provided with a first annular groove (332) for embedding the end of the compression spring (32).

6. The rotating shaft of the circuit breaker as claimed in claim 4, wherein a guide block (333) is disposed on a side surface of the contact plate (33), and a guide groove (111) for the guide block (333) to insert and slide is disposed on an inner sidewall of the first through hole (11).

7. A circuit breaker shaft easy to install according to claim 4, characterized in that the side of the contact plate (33) facing away from the compression spring (32) is provided with a non-slip pad (34).

8. An easily assembled rotary shaft for a circuit breaker according to claim 1, wherein the side of the main body (1) near the edge of the limiting groove (15) is provided with a protrusion (16).