CN218918757U

CN218918757U - Molded case circuit breaker release module operating mechanism

Info

Publication number: CN218918757U
Application number: CN202223017929.4U
Authority: CN
Inventors: 李红林; 郁斌; 赵付祥
Original assignee: Shanghai Renmin Electrical Apparatus Works Co Ltd
Current assignee: Shanghai Renmin Electrical Apparatus Works Co Ltd
Priority date: 2022-11-14
Filing date: 2022-11-14
Publication date: 2023-04-25
Anticipated expiration: 2032-11-14

Abstract

The utility model relates to a molded case circuit breaker release module operating mechanism, which comprises a base (1), a push rod (2), a reset elastic piece (5), a traction rod (6), a shaft a (7), an elastic piece (8) and a shaft b (9), wherein a rebuckling feature (203) is arranged on the push rod (2), a buckling feature (602) is arranged on the traction rod (6), and the push rod (2) and the traction rod (6) are driven by external force to perform reverse rotation movement so as to drive the rebuckling feature (203) to contact with and disengage from the buckling feature (602), so that the release and rebuckling of a release are realized. The utility model adopts a direct limiting mode, has simple structure and small occupied space, utilizes the handle to directly rebuck, has fewer transmission chains and fewer operating mechanism parts, can complete the rebuckling and tripping actions required by the adjustable tripper in a smaller space, and meets the design requirement of coil attraction type magnetic tripping of the tripper module in the circuit breaker with smaller specification.

Description

Molded case circuit breaker release module operating mechanism

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to a molded case circuit breaker release module operating mechanism.

Background

A circuit breaker is a switching device capable of closing, carrying and breaking a current under normal circuit conditions and capable of closing, carrying and breaking a current under abnormal circuit conditions for a prescribed time. The circuit breaker is divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, the low-voltage plastic shell circuit breaker is widely applied to a low-voltage distribution system, the circuit breaker is provided with double tasks of protecting and controlling a circuit, and the circuit breaker plays a vital role in the safety, reliability and practicability of the whole circuit system.

The molded case circuit breaker mainly comprises a contact arc extinguishing system, an operating mechanism and a release, wherein the release realizes the protection of the molded case circuit breaker on overload or short circuit faults through thermal effect or magnetic effect. For adapting to complicated changeable application scenario, adjustable release is developed gradually, but its mechanism contains more transmission spare part, and occupation space is great, is difficult to carry out better cooperation in the in-service use, takes place the dead phenomenon of card easily, and current adjustable release adopts clapping formula magnetism to trip more in addition, is difficult to adapt to less specification circuit breaker short-circuit protection demand. The circuit breaker of smaller specification is small, but the actuation formula magnetic tripping that it adopted is more occupation space again, and at the time of pursuing modularization, miniaturized design, the requirement of adjustable release module to space structure is very high, needs to design a release module operating device that is small, easy assembly, satisfies the release modularization design demand of less specification circuit breaker.

Disclosure of Invention

The utility model aims to overcome the defects of the prior art and provide the release module operating mechanism which is small in size and easy to assemble, and meets the release modularization design requirement of a smaller-specification circuit breaker.

The aim of the utility model can be achieved by the following technical scheme:

the utility model provides a moulded case circuit breaker release module operating device, includes the base, the push rod, resets the elastic component, the traction lever, axle a, elastic component and axle b, the push rod, reset elastic component and install on the base through axle a, the traction lever passes through axle b and installs on the base, be equipped with on the push rod and detain the characteristic again, be equipped with the buckle characteristic on the traction lever, push rod and traction lever receive external force drive to make reverse rotary motion in order to drive the contact and the disconnection of detaining the characteristic again and buckle characteristic again, realize the release of release and detain again, detain the characteristic again and make circuit breaker release module utilize the direct spacing form to carry out the release and detain again, simple structure takes up an area of for the space little.

Further, the re-buckling feature is a protrusion arranged at the bottom of the push rod in a downward extending mode, the buckling feature is a protrusion arranged at the surface of the pull rod in an outward extending mode, the buckling feature and the motion track of the re-buckling feature are located on the same horizontal plane, and the buckling feature and the motion track are matched with the relative position between the limit pull rod and the push rod.

Further, a boss c is arranged on the traction rod, one end of the reset elastic piece acts on the base, and the other end acts on the lower side of the boss c of the traction rod to drive the traction rod to rotate.

Further, a boss b is arranged on the base, and when the traction rod rotates around the axis of the traction rod, the boss b and a movement track of a boss c on the traction rod are located on the same plane, so that the rotation position of the traction rod is limited.

Further, a boss a is arranged on the base, and a bump is arranged on the push rod.

Further, when the push rod rotates, the movement track of the boss a and the lug is positioned on the same plane, and the rotating position of the push rod is limited.

Further, one end of the elastic piece acts on the base, and the other end acts on the push rod to drive the push rod to rotate.

Further, one end of the push rod is attached to the wall surface of the base, the other end of the push rod is attached to the elastic piece, and the base and the elastic piece limit push rod cannot slide axially.

Further, holes are symmetrically formed in the base, and the shaft b is installed on the base through the holes.

Further, the base is provided with a plurality of U-shaped holes, the U-shaped holes are formed in two sides of the push rod, and the push rod, the reset elastic piece and the elastic piece are arranged in the U-shaped holes of the base through the shaft a.

Compared with the prior art, the utility model has the following advantages:

(1) The utility model is different from the re-buckling structure in the reverse hook form in the prior art, the re-buckling structure in the utility model adopts a direct limiting form, has simple structure and small occupied space, can better adapt to the rear-mounted requirements of bimetallic strips, adjusting screws and the like, and can realize space dislocation configuration with other structures.

(2) The mechanism utilizes the handle to directly rebuckle, has the advantages of less transmission chain, simple structure, small occupied space, less parts of an operating mechanism and easy assembly, can be adapted to smaller adjustable trippers, completes the rebuckling and tripping actions required by the adjustable trippers in smaller space, reserves space for other parts, and can meet the design requirement of coil attraction type magnetic tripping of the tripper module in the circuit breaker with smaller specification.

Drawings

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

FIG. 2 is an exploded view of the components of the present utility model;

FIG. 3 is a schematic view of the assembly structure of the rebuckles of the present utility model;

FIG. 4 is a schematic diagram of the assembly structure of the mechanism in the tripped state of the utility model;

FIG. 5 is a schematic view of another embodiment of the present utility model assembled in the rebuckles position.

In the figure: 1. a base; 101. a boss a; 102. a boss b; 104. a U-shaped hole; 105. a hole; 2. a push rod; 202. a bump; 203. re-buckling the characteristics; 5. a return elastic member; 6. a traction rod; 601. a boss c; 602. a snap feature; 7. a shaft a; 8. an elastic member; 9. and an axis b.

Detailed Description

The utility model will now be described in detail with reference to the drawings and specific examples.

Example 1

As shown in fig. 1 and 2, an operating mechanism for a release module of a molded case circuit breaker includes a base 1, a push rod 2, a reset elastic member 5, a traction rod 6, a shaft a7, an elastic member 8 and a shaft b9, wherein the base 1 is provided with a plurality of U-shaped holes 104, the U-shaped holes 104 are located at two sides of the push rod 2, and the push rod 2, the reset elastic member 5 and the elastic member 8 are installed in the U-shaped holes 104 of the base 1 through the shaft a 7. The base 1 is symmetrically provided with holes 105, the shaft b9 is arranged on the base 1 through the holes 105, the traction rod 6 is arranged on the base 1 through the shaft b9, a boss c601 is arranged on the traction rod 6, one end of the elastic member 5 acts on the base 1, the other end acts on the lower side of the boss c601 of the traction rod 6 to drive the traction rod 6 to rotate, a boss b102 is arranged on the base, when the traction rod 6 rotates around the axis of the traction rod 6, the movement track of the boss b102 and the boss c601 on the traction rod 6 are located on the same plane, the position of the traction rod 6 is limited, a boss a101 is further arranged on the base 1, a lug 202 is arranged on the push rod 2, when the push rod 2 rotates, the movement track of the boss a101 and the lug 202 are located on the same plane, the position of the push rod 2 is limited, one end of the elastic member 8 acts on the base 1, the other end acts on the push rod 2 to drive the push rod 2 to rotate, one end is attached to the wall surface of the base 1, the other end is attached to the elastic member 8, and the base 1 and the elastic member 8 enables the push rod 2 not to slide axially. The return elastic member 5 and the elastic member 8 are preferably torsion springs in the present utility model, which is advantageous in reducing the required assembly space.

As shown in fig. 3-5, the push rod 2 is provided with a rebuckling feature 203, the traction rod 6 is provided with a buckling feature 602, the push rod 2 and the traction rod 6 are driven by external force to make reverse rotation movement so as to drive the rebuckling feature 203 to be contacted with and separated from the buckling feature 602, the tripping and rebuckling of the release are realized, the rebuckling feature 203 is a protrusion extending downwards from the bottom of the push rod 2, the movement tracks of the buckling feature 602 and the rebuckling feature 203 are located on the same horizontal plane, and the two are matched with the relative position between the limit traction rod 6 and the push rod 2.

In the tripped state, the push rod 2 rotates anticlockwise under the action of the elastic member 8, eventually stops when the small boss 202 on the push rod 2 hits the boss a101 on the base 1, the traction rod 6 also rotates clockwise under the action of the reset elastic member 5, and stops rotating when the snap feature 602 of the traction rod 6 hits the re-snap feature 203 of the push rod 2.

When the push rod 2 is contacted with the upper surface of the push rod 2, the push rod 2 is pushed to rotate clockwise together, the push rod 2 is pushed to push the traction rod 6 to rotate anticlockwise, the rebuckling feature 203 of the push rod 2 is separated from the buckling feature 602 of the traction rod 6 after the push rod 2 reaches a certain position, the traction rod 6 rotates clockwise under the action of the restoring moment of the restoring elastic piece 5, the boss c601 of the traction rod reaches a limit position when the boss b102 of the base 1 is touched, the handle continues to rotate until the circuit breaker mechanism completes rebuckling, the operation handle rotates anticlockwise, the push rod 2 rotates anticlockwise under the action of anticlockwise torque of the elastic piece 8, and finally the upper surface of the rebuckling feature 203 is abutted against the arc surface of the buckling feature 602 to achieve rebuckling, and at the moment, the push rod can generate clockwise torque on the traction rod 6, so that the rebuckling is more reliable.

When the circuit breaker is in thermal overload or short circuit, the traction rod 6 is stressed to rotate anticlockwise, the buckling feature 602 and the rebuckling feature 203 are disengaged, the elastic piece 8 immediately drives the push rod 2 to rotate anticlockwise, the tripping of the tripping device module operating mechanism is realized, the push rod 2 impacts the traction rod on the circuit breaker mechanism for controlling the tripping of the circuit breaker mechanism in the tripping process of the tripping device module operating mechanism, the traction rod rotates clockwise, the circuit breaker mechanism is further caused to trip, and the circuit breaker is opened.

In summary, the rebuckling structure of the utility model adopts a direct limiting mode, has simple structure and small occupied space, uses the handle to directly rebuckle, has fewer transmission chains, has fewer operating mechanism parts and is easy to assemble, can be adapted to smaller adjustable trippers, completes rebuckling and tripping actions required by the adjustable trippers in smaller space, and meets the design requirement of coil attraction type magnetic tripping of the tripper module in the circuit breaker with smaller specification.

Claims

1. The utility model provides a moulded case circuit breaker release module operating device, includes base (1), push rod (2), elastic component (5) reset, traction lever (6), axle a (7), elastic component (8) and axle b (9), push rod (2), elastic component (5) reset and elastic component (8) are installed on base (1) through axle a (7), and traction lever (6) are installed on base (1) through axle b (9), its characterized in that:

the push rod (2) is provided with a re-buckling feature (203), the traction rod (6) is provided with a buckling feature (602), and the push rod (2) and the traction rod (6) are driven by external force to do reverse rotation movement so as to drive the re-buckling feature (203) to be contacted with and separated from the buckling feature (602), so that the release and re-buckling of the release are realized.

2. The molded case circuit breaker release module operating mechanism of claim 1, wherein the rebuckling feature (203) is a protrusion extending downward from the bottom of the push rod (2), the buckling feature (602) is a protrusion extending outward from the surface of the pull rod (6), the movement tracks of the buckling feature (602) and the rebuckling feature (203) are located on the same horizontal plane, and the two cooperate with the relative position between the limit pull rod (6) and the push rod (2).

3. The operating mechanism of a molded case circuit breaker release module according to claim 1, wherein a boss c (601) is arranged on the traction rod (6), one end of the reset elastic piece (5) acts on the base (1), and the other end acts on the lower side of the boss c (601) of the traction rod (6) to drive the traction rod (6) to rotate.

4. The operating mechanism of the release module of the molded case circuit breaker according to claim 3, wherein the base is provided with a boss b (102), and when the traction rod (6) rotates around the axis of the base, the movement track of the boss b (102) and the movement track of the boss c (601) on the traction rod (6) are located on the same plane, and the rotation position of the traction rod (6) is limited.

5. The operating mechanism of a molded case circuit breaker release module according to claim 1, wherein a boss a (101) is arranged on the base (1), and a bump (202) is arranged on the push rod (2).

6. The operating mechanism of a molded case circuit breaker release module according to claim 5, wherein when the push rod (2) rotates, the movement track of the boss a (101) and the movement track of the boss 202 are located on the same plane, and the rotating position of the push rod (2) is limited.

7. The operating mechanism of a molded case circuit breaker release module according to claim 1, wherein one end of the elastic member (8) acts on the base (1) and the other end acts on the push rod (2) to drive the push rod (2) to rotate.

8. The operating mechanism of a molded case circuit breaker release module according to claim 7, wherein one end of the push rod (2) is attached to a wall surface of the base (1), the other end of the push rod is attached to the elastic piece (8), and the base (1) and the elastic piece (8) limit the push rod (2) from sliding axially.

9. The operating mechanism of a molded case circuit breaker release module according to claim 1, wherein holes (105) are symmetrically formed in the base (1), and the shaft b (9) is mounted on the base (1) through the holes (105).

10. The operating mechanism of the release module of the molded case circuit breaker according to claim 1, wherein the base (1) is provided with a plurality of U-shaped holes (104), the U-shaped holes (104) are positioned on two sides of the push rod (2), and the push rod (2), the reset elastic piece (5) and the elastic piece (8) are installed in the U-shaped holes (104) of the base (1) through the shaft a (7).