CN218769351U - Protection structure of moulded case circuit breaker pivot - Google Patents

Abstract

The utility model relates to a protection architecture of moulded case circuit breaker pivot, including side baffle (1), baffle (2), rotor (3), touch bridge (4), circuit breaker casing (5), be equipped with cavity (51) in circuit breaker casing (5), a side baffle (1) is respectively established to baffle (2) both sides, constitutes the cavity of protection rotor (3), and this cavity inner wall closely laminates with rotor (3), and integral erection is inside cavity (51). The utility model provides a can increase the protection architecture of moulded case circuit breaker pivot of module gas tightness, this structure is easily installed, and the assembly process is simple and convenient, laborsaving, effectively reduces the gas that electric arc produced simultaneously and leaks and prevent that the arc that spouts that electric arc produced from the rotor and get into the rotor, has improved work efficiency and life.

Description

Protection structure of moulded case circuit breaker pivot

Technical Field

The utility model belongs to the technical field of the low-voltage apparatus technique and specifically relates to a protection architecture of moulded case circuit breaker pivot is related to.

Background

The molded case circuit breaker is a low-voltage electrical appliance which can be used as a switch and has an automatic circuit protection function, and can automatically break a circuit when the circuit is in an abnormal state (such as overload, short circuit, undervoltage and the like), so that the safety of workers and the normal operation of equipment are prevented from being endangered due to circuit faults.

The plastic shell breaker rotating shaft is a connecting piece between a mechanism and a contact, plays an important role, and is a bridge for connecting a breaker mechanism and a contact system, and energy in the breaker is transmitted to the rotating shaft by the mechanism and then transmitted to each phase moving contact through the rotating shaft and a connecting rod. On one hand, it transmits the operating force of the mechanism to each phase moving contact, and needs to have enough strength and rigidity, and on the other hand, the contacts of each phase must be kept in electric insulation. For the circuit breaker with smaller rated working current, a plastic part is adopted for a common rotating shaft, and for the circuit breaker with larger rated working current, the strength and rigidity of the pure plastic part are insufficient, and a plastic and metal assembly is required. The circuit breaker mechanism is connected with the rotating shaft through the connecting rod, a large gap exists at the rotating shaft of the existing circuit breaker, and gas generated by electric arc can leak from the gap, so that interphase short circuit can be possibly caused; the arc that spouts that electric arc produced can damage connecting rod, spring etc. of installation in the pivot, and the arc that spouts that current circuit breaker pivot structure produced can not effectively prevent electric arc to get into the rotor.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a can increase the gas tightness of module in order to overcome the defect that above-mentioned prior art exists, effectively reduce the gas that electric arc produced and leak from the rotor and prevent that the arc that spouts that electric arc produced from getting into the moulded case circuit breaker pivot protection architecture of rotor.

The purpose of the utility model can be realized through the following technical scheme:

the utility model provides a protection architecture of moulded case circuit breaker pivot, includes side baffle, rotor, touches the bridge, circuit breaker housing, be equipped with the cavity in the circuit breaker housing, a side baffle is respectively established to the baffle both sides, constitutes the cavity of protection rotor, and this cavity inner wall closely laminates with the rotor, and integral erection is inside the cavity.

Furthermore, the side baffle extends to one side and is provided with a wall, and the wall is tightly attached to the inner wall of the cavity.

Furthermore, the wall is arranged along the edge of the side partition plate, so that the side partition plate and the wall form a side cover of the rotor integrally, and the inner wall of the side cover is tightly attached to the rotor.

Furthermore, the rotor is provided with a protrusion a, the side partition board is correspondingly provided with a hole a, and the protrusion a is inserted into the hole a, so that the side partition board is installed and positioned on two sides of the rotor.

Furthermore, a hole c is formed in the rotor, a hole b is correspondingly formed in the side partition plate, and a mechanism shaft of the circuit breaker is connected with the rotor and a cavity for protecting the rotor through the hole c and the hole b.

Furthermore, a protrusion b is arranged on the rotor, and a hole d is correspondingly formed in the side partition plate and used for the protrusion b to penetrate through.

Furthermore, a hole e for the contact bridge to pass through is formed in the partition plate, and the contact bridge drives the partition plate to synchronously rotate when rotating.

Further, the hole e is shaped to correspond to the contact bridge.

Furthermore, the cross section of the partition board is in a semicircular shape, and the two partition boards are combined into a cylinder for accommodating the rotor.

Furthermore, the side partition plates are positioned at two sides of the cylinder formed by the two partition plates, and the extending walls of the side partition plates are buckled at two ends of the cylinder.

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

(1) The utility model discloses simple structure, easily installation, assembly process is simple and convenient, laborsaving.

(2) The utility model discloses can reduce the clearance that circuit breaker pivot department exists, increase the gas tightness of module, reduce the gas that electric arc produced effectively and leak from the rotor.

(3) The utility model discloses can prevent effectively that the arc that spouts that electric arc produced from getting into the rotor, connecting rod, spring etc. of installation are not damaged in the protection pivot.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is another schematic structural diagram of the present invention;

FIG. 3 is a schematic structural view of a rotor of the present invention;

fig. 4 is a schematic structural diagram of a circuit breaker housing according to the present invention;

fig. 5 is another schematic structural diagram of the circuit breaker housing of the present invention.

In the figure: 1. a side partition plate; 11. a wall; 13. a hole a; 14. a hole b; 15. a hole d; 2. a partition plate; 21. a hole e; 3. a rotor; 31. a protrusion a; 32. a hole c; 33. a protrusion b; 4. contacting the bridge; 5. a cover; 51. a cavity.

Detailed Description

The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

Examples

As shown in fig. 1, a protection structure of a plastic case circuit breaker rotating shaft comprises a side partition plate 1, a partition plate 2, a rotor 3 and a contact bridge 4, wherein the two sides of the partition plate 2 are respectively provided with the side partition plate 1 to form a cavity for protecting the rotor 3, and the inner wall of the cavity is tightly attached to the rotor 3 and used for preventing gas generated by electric arc from leaking from the rotor and preventing the arc generated by electric arc from entering the rotor. As shown in fig. 4, a cavity 51 is formed in the circuit breaker housing 5, and the inner wall of the cavity of the protection structure is tightly attached to the inside of the cavity 51, as shown in fig. 2, the side partition plate 1 extends to one side to form a wall 11, the wall 11 is tightly attached to the inner wall of the cavity 51, the wall 11 is arranged along the edge of the side partition plate 1, so that the side partition plate 1 and the wall 11 form a side cover of the rotor integrally, and the inner wall of the side cover is tightly attached to the rotor 3.

As shown in fig. 3, the rotor 3 is provided with a protrusion a31, a hole c32, and a protrusion b33, as shown in fig. 2, the side partition plate 1 is provided with a hole a13, a hole b14, and a hole d15, the protrusion a31 can be installed and positioned corresponding to the insertion hole a13, a mechanism shaft of the circuit breaker is connected with the rotor 3 and a cavity of a rotating shaft protection structure of the circuit breaker through the hole c32 and the hole b14, and the hole d15 is used for the protrusion b33 to pass through to realize the installation and positioning of the rotor 3 and the side partition plate 1.

As shown in fig. 2, the hole a13, the hole b14 and the hole d15 are symmetrically arranged on two sides of the side partition board 1, the cross section of the side partition board 2 is in a semicircular shape, the two partition boards 2 are combined into a cylinder for accommodating the rotor 3, the side partition board 1 is arranged on two sides of the cylinder formed by the two partition boards 2, the wall 11 extending from the side partition board 1 is buckled on two ends of the cylinder, the partition board 2 is provided with a hole e21, the shape of the hole e21 corresponds to that of the contact bridge 4, the contact bridge 4 is provided for passing through, and the contact bridge 4 drives the partition boards 2 to synchronously rotate when rotating.

To sum up, the utility model provides a can increase the protection architecture of moulded case circuit breaker pivot of module gas tightness, this structure is easily installed, and assembly process is simple and convenient, laborsaving, effectively prevents that the gas that electric arc produced from leaking and preventing that electric arc from producing spouting the arc entering rotor in the rotor simultaneously, has improved work efficiency and life.

Claims (10)

1. The utility model provides a protection architecture of moulded case circuit breaker pivot, its characterized in that includes side baffle (1), baffle (2), rotor (3), touches bridge (4), circuit breaker casing (5), be equipped with cavity (51) in circuit breaker casing (5), a side baffle (1) is respectively established to baffle (2) both sides, constitutes the cavity of protection rotor (3), and this cavity inner wall closely laminates with rotor (3), and whole installation is inside cavity (51).

2. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 1, wherein the side partition (1) is extended to one side to form a wall (11), and the wall (11) is closely attached to the inner wall of the cavity (51).

3. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 2, wherein the wall (11) is disposed along an edge of the side partition (1), such that the side partition (1) and the wall (11) are integrated to form a side cover of the rotor, and an inner wall of the side cover is closely attached to the rotor (3).

4. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 1, wherein the rotor (3) is provided with a protrusion a (31), the side partition (1) is correspondingly provided with a hole a (13), and the protrusion a (31) is inserted into the hole a (13), so that the side partition (1) is installed and positioned at two sides of the rotor (3).

5. The protection structure of the rotating shaft of the molded case circuit breaker according to claim 1, wherein the rotor (3) is provided with a hole c (32), the side partition (1) is correspondingly provided with a hole b (14), and the mechanism shaft of the circuit breaker is connected with the rotor (3) and the cavity for protecting the rotor through the hole c (32) and the hole b (14).

6. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 1, wherein the rotor (3) is provided with a protrusion b (33), and the side partition (1) is correspondingly provided with a hole d (15) for the protrusion b (33) to pass through.

7. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 1, wherein the partition plate (2) is provided with a hole e (21) for the contact bridge (4) to pass through, and the contact bridge (4) drives the partition plate (2) to rotate synchronously when rotating.

8. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 7, wherein the hole e (21) is shaped to correspond to the contact bridge (4).

9. The protection structure of a rotating shaft of a molded case circuit breaker according to claim 1 or 7, wherein the cross section of the partition plate (2) is a semicircular shape, and the two partition plates (2) are combined into a cylinder for accommodating the rotor (3).

10. The protection structure of the rotating shaft of the molded case circuit breaker according to claim 9, wherein the side partitions (1) are located at two sides of the cylinder formed by the two partitions (2), and the walls (11) extending from the side partitions (1) are fastened at two ends of the cylinder.

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