CN220627720U

CN220627720U - Anti-electric shock safety circuit breaker

Info

Publication number: CN220627720U
Application number: CN202322250858.0U
Authority: CN
Inventors: 郑伟
Original assignee: Anhui Huayi Electric Co ltd
Current assignee: Anhui Huayi Electric Co ltd
Priority date: 2023-08-22
Filing date: 2023-08-22
Publication date: 2024-03-19
Anticipated expiration: 2033-08-22

Abstract

The utility model provides an electric shock prevention safety circuit breaker, belongs to the technical field of electrical components, and is used for solving the technical problems that the existing circuit breaker is easy to be switched on by mistake and has lower safety. The circuit breaker comprises a circuit breaker body and an operating handle, wherein a lifting metal sheet is arranged on the circuit breaker body, an elastic sheet and a supporting rod are arranged below the lifting metal sheet, an elastic mechanism for downwards extruding the lifting metal sheet is arranged on the circuit breaker body, an annular groove is formed in the position of a rotating shaft of the operating handle, a rotating ring is rotatably arranged in the annular groove, a unidirectional rotating assembly is arranged on the rotating ring, two symmetrically distributed grooves are formed in the rotating ring, and the bottoms of the supporting rods are propped against the inner wall of the grooves; this protection against electric shock safety circuit breaker needs to dial the operating handle twice upwards when the power transmission, reminds the personnel who carry out the circuit maintenance when the power transmission of first time, makes its attention circuit switch-on, prevents to electrocute, and normal power transmission can improve the safety in utilization of circuit breaker when the power transmission of second time.

Description

Anti-electric shock safety circuit breaker

Technical Field

The utility model belongs to the technical field of electrical components, and relates to an electric shock prevention safety 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 divided into a high-voltage circuit breaker and a low-voltage circuit breaker according to the application range, the division of a high-voltage boundary line and a low-voltage boundary line is fuzzy, and the circuit breaker is generally called a high-voltage electrical appliance with the voltage of more than 3 kV; the circuit breaker can be used for distributing electric energy, starting the asynchronous motor infrequently, protecting a power line, the motor and the like, and automatically cutting off the circuit when serious overload or short circuit, undervoltage and other faults occur, and the functions of the circuit breaker are equivalent to the combination of a fuse type switch, an over-under-heating relay and the like.

Operators need to break a breaker in a circuit when overhauling an electric appliance, so that the effect of outage is achieved, electric shock is prevented from being dangerous when overhauling the electric appliance, when the operators break the breaker and leave to overhauling the electric appliance at a far position, the breaker is easy to be closed by unknowingly non-operators, the electric shock of the overhauling staff is caused, and serious casualties even occur, so that the safety of the existing breaker is lower.

Based on this, we designed a kind of protection against electric shock safety circuit breaker.

Disclosure of Invention

The utility model aims at solving the problems in the prior art, and provides an electric shock prevention safety circuit breaker, which aims to solve the technical problems that: how to prevent non-operating personnel from closing the breaker and improve the safety of the breaker.

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

the utility model provides an protection against electric shock safety circuit breaker, includes, circuit breaker body and operating handle, be provided with the lift sheetmetal on the circuit breaker body, the lift sheetmetal is located operating handle's top, and the below of lift sheetmetal is provided with shell fragment and branch, be equipped with the elastic mechanism that is used for the downward extrusion lift sheetmetal on the circuit breaker body, the ring channel has been seted up to operating handle's pivot position, rotate in the ring channel and be provided with the swivel becket, and be equipped with unidirectional rotating subassembly on the swivel becket, seted up the recess of two symmetric distributions on the swivel becket, and the bottom and the recess inner wall of branch offset.

The elastic mechanism comprises an L-shaped fixing plate and two positioning bolts, two bolt holes are formed in the circuit breaker body, a long notch is formed in the lifting metal plate, two positioning holes are formed in the L-shaped fixing plate, the two positioning bolts penetrate through the positioning holes and the long notch at corresponding positions to be in threaded connection with the bolt holes, a transverse plate is fixed at the lower end of the lifting metal plate, a spring is fixed at the lower end of the L-shaped fixing plate, and the lower end of the spring is fixedly connected with the transverse plate.

By adopting the structure, under the action of the two positioning bolts, the L-shaped fixing piece is fixed in position, the lifting metal piece can move up and down under the action of the long notch and the two positioning bolts, and the spring pushes the lifting metal piece and the supporting rod downwards.

The bottom of branch is provided with the arc crotch, and the arc crotch offsets with the bottom of recess.

By adopting the structure, the arc-shaped hook can enlarge the contact area of the support rod and the groove, prevent the rotating ring from being blocked by the support rod when rotating, and improve the use smoothness of the equipment.

Two limit grooves which are symmetrically distributed are formed in the rotating ring, and the limit grooves and the grooves are distributed alternately.

By adopting the structure, when the dial-up operating handle is powered on for the first time, the rotating ring rotates along with the operating handle, and at the moment, the arc-shaped hook can be propped in the limit groove, so that the position of the rotating ring is more stable.

The unidirectional rotation assembly comprises a ratchet wheel fixed at the side end of the rotating ring, the ratchet wheel is rotationally arranged inside the annular groove, a lug is fixed on the operating handle, a first elastic piece pawl is fixed on one side of the lug, which is close to the ratchet wheel, the first elastic piece pawl is meshed with the ratchet wheel, a second elastic piece pawl is fixed on the circuit breaker body, and the second elastic piece pawl is meshed with the ratchet wheel.

With the above structure, when an operator transmits power, the operation handle is shifted upwards, and at the moment, under the action of the first elastic piece pawl, the ratchet wheel and the rotating ring synchronously rotate along with the operation handle, but when the operation handle is shifted downwards, under the action of the second elastic piece pawl, the ratchet wheel and the rotating ring cannot rotate.

Compared with the prior art, the electric shock prevention safety circuit breaker has the following advantages:

1. through shell fragment, elastic mechanism, swivel becket and unidirectional rotation subassembly, need dial up operating handle twice when the power transmission, remind the personnel that carry out the circuit maintenance when the power transmission for the first time, make its attention circuit switch-on, prevent to electrocute, normal power transmission when the power transmission for the second time can improve the safety in utilization of circuit breaker, reduces the electric shock possibility.

2. Through the arc crotch, prevent that the swivel becket from being blocked by branch when rotating, improve equipment use smoothness, through the spacing groove, can improve the stability of swivel becket at twice power transmission in-process, further improve the practical smoothness of equipment.

Drawings

FIG. 1 is a schematic perspective view of the present utility model;

FIG. 2 is a schematic view of the spring mechanism of the present utility model;

FIG. 3 is a schematic view of the structure of the operating handle and its connecting parts in the present utility model;

FIG. 4 is a schematic view of the structure of the rotating ring in the present utility model;

fig. 5 is a schematic view showing a partial structure of a breaker body according to the present utility model.

In the figure: 1. a circuit breaker body; 2. an operation handle; 3. lifting the metal sheet; 4. a spring plate; 5. an elastic mechanism; 501. bolt holes; 502. positioning bolts; 503. a long notch; 504. an L-shaped fixing piece; 505. positioning holes; 506. a transverse sheet; 507. a spring; 6. an annular groove; 7. a rotating ring; 8. a unidirectional rotating assembly; 801. a ratchet wheel; 802. a bump; 803. a first spring pawl; 804. a second spring pawl; 9. a groove; 10. a support rod; 11. an arc-shaped hook; 12. and a limit groove.

Detailed Description

The technical scheme of the patent is further described in detail below with reference to the specific embodiments.

Embodiments of the present patent are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary only for explaining the present patent and are not to be construed as limiting the present patent.

In the description of this patent, it should be understood that the terms "center," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the patent and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be configured and operated in a particular orientation, and are therefore not to be construed as limiting the patent.

In the description of this patent, it should be noted that, unless explicitly stated and limited otherwise, the terms "mounted," "connected," and "disposed" are to be construed broadly, and may be fixedly connected, disposed, detachably connected, disposed, or integrally connected, disposed, for example. The specific meaning of the terms in this patent will be understood by those of ordinary skill in the art as the case may be.

Referring to fig. 1-5, the embodiment provides an electric shock protection safety circuit breaker, which comprises a circuit breaker body 1 and an operating handle 2, wherein a lifting metal sheet 3 is arranged on the circuit breaker body 1, the lifting metal sheet 3 is positioned above the operating handle 2, an elastic sheet 4 and a supporting rod 10 are arranged below the lifting metal sheet 3, an elastic mechanism 5 for downwardly extruding the lifting metal sheet 3 is arranged on the circuit breaker body 1, an annular groove 6 is arranged at the rotating shaft position of the operating handle 2, a rotating ring 7 is rotationally arranged in the annular groove 6, a unidirectional rotating assembly 8 is arranged on the rotating ring 7, two symmetrically distributed grooves 9 are arranged on the rotating ring 7, and the bottoms of the supporting rods 10 are propped against the inner walls of the grooves 9.

The elastic mechanism 5 comprises an L-shaped fixing piece 504 and two positioning bolts 502, two bolt holes 501 are formed in the circuit breaker body 1, a long notch 503 is formed in the lifting metal piece 3, two positioning holes 505 are formed in the L-shaped fixing piece 504, the two positioning bolts 502 penetrate through the positioning holes 505 and the long notch 503 at corresponding positions to be connected in the bolt holes 501 in a threaded manner, a transverse piece 506 is fixed at the lower end of the lifting metal piece 3, a spring 507 is fixed at the lower end of the L-shaped fixing piece 504, and the lower end of the spring 507 is fixedly connected with the transverse piece 506; under the action of the two positioning bolts 502, the L-shaped fixing piece 504 is fixed in position, the lifting metal sheet 3 can move up and down under the action of the long groove 503 and the two positioning bolts 502, and the spring 507 pushes the lifting metal sheet 3 and the supporting rod 10 downwards.

The bottom of the supporting rod 10 is provided with an arc-shaped hook 11, and the arc-shaped hook 11 is propped against the bottom of the groove 9; the arc-shaped hook 11 can enlarge the contact area between the support rod 10 and the groove 9, so that the rotating ring 7 is prevented from being blocked by the support rod 10 during rotation, and the use smoothness of the equipment is improved.

Two limit grooves 12 which are symmetrically distributed are formed in the rotating ring 7, and the limit grooves 12 and the grooves 9 are alternately distributed; when the dial-up operating handle 2 is powered on for the first time, the rotating ring 7 rotates along with the operating handle 2, and at the moment, the arc-shaped hook 11 can abut against the limiting groove 12, so that the position of the rotating ring 7 is more stable.

The unidirectional rotation assembly 8 comprises a ratchet wheel 801 fixed at the side end of the rotation ring 7, the ratchet wheel 801 is rotatably arranged in the annular groove 6, a lug 802 is fixed on the operating handle 2, a first elastic sheet pawl 803 is fixed on one side of the lug 802, which is close to the ratchet wheel 801, the first elastic sheet pawl 803 is meshed with the ratchet wheel 801, a second elastic sheet pawl 804 is fixed on the circuit breaker body 1, and the second elastic sheet pawl 804 is meshed with the ratchet wheel 801; when the operator transmits power, the operator dials up the operating handle 2, and at this time, under the action of the first elastic piece pawl 803, the ratchet 801 and the rotating ring 7 rotate synchronously along with the operating handle 2, but when the operating handle 2 dials down, under the action of the second elastic piece pawl 804, the ratchet 801 and the rotating ring 7 cannot rotate.

In this embodiment, the fixing manner is the fixing manner most commonly used in the art, such as welding, bolting, etc.

The working principle of the utility model is as follows:

when an operator dials down the operating handle 2 to disconnect the breaker body 1, when power is transmitted, the operating handle 2 needs to be dialed up, at this time, under the action of the first elastic sheet pawl 803, the ratchet 801 and the rotating ring 7 rotate synchronously along with the operating handle 2, when the rotating ring 7 rotates, the arc-shaped hook 11 originally abutted against the bottom of the groove 9 can be pushed up and finally abutted against the limiting groove 12, at this time, the lifting metal sheet 3 moves up, when the operating handle 2 is dialed up to connect the breaker body 1, the lifting metal sheet 3 abuts against the elastic sheet 4, under the action of the elastic sheet 4, the operating handle 2 can be pushed down and tripped, at this time, the breaker body 1 is powered down again, personnel performing circuit maintenance can be reminded, the circuit is connected, electric shock is prevented, at this time, under the action of the second elastic sheet pawl 804, the ratchet 801 and the rotating ring 7 cannot rotate, then dial up again the operating handle 2, and the same time, rotate synchronously along with the operating handle 2, the arc-shaped hook 11 is abutted against the other groove 9, at this time, the lifting metal sheet 3 descends again, the handle 4 and the handle 2 is in a switch-on state, and the power transmission state can be completed.

While the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes may be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.

Claims

1. The utility model provides an protection against electric shock safety circuit breaker, includes circuit breaker body (1) and operating handle (2), its characterized in that, be provided with lift sheetmetal (3) on circuit breaker body (1), lift sheetmetal (3) are located the top of operating handle (2), and the below of lift sheetmetal (3) is provided with shell fragment (4) and branch (10), be equipped with on circuit breaker body (1) and be used for down extrusion lifting sheetmetal (3) elasticity mechanism (5), ring channel (6) have been seted up in the pivot position of operating handle (2), the rotation of ring channel (6) is provided with swivel ring (7), and be equipped with unidirectional rotation subassembly (8) on swivel ring (7), set up recess (9) of two symmetric distributions on swivel ring (7), and the bottom of branch (10) offsets with recess (9) inner wall.

2. The electric shock protection safety circuit breaker according to claim 1, wherein the elastic mechanism (5) comprises an L-shaped fixing piece (504) and two positioning bolts (502), two bolt holes (501) are formed in the circuit breaker body (1), a long notch (503) is formed in the lifting metal piece (3), two positioning holes (505) are formed in the L-shaped fixing piece (504), the two positioning bolts (502) penetrate through the positioning holes (505) and the long notch (503) at corresponding positions to be connected in the bolt holes (501) in a threaded manner, a transverse piece (506) is fixed at the lower end of the lifting metal piece (3), a spring (507) is fixed at the lower end of the L-shaped fixing piece (504), and the lower end of the spring (507) is fixedly connected with the transverse piece (506).

3. An anti-shock safety circuit breaker according to claim 1 or 2, characterized in that the bottom of the pole (10) is provided with an arc-shaped hook (11), and the arc-shaped hook (11) abuts against the bottom of the groove (9).

4. The electric shock protection safety circuit breaker according to claim 1, wherein two limit grooves (12) are symmetrically distributed on the rotating ring (7), and the limit grooves (12) and the grooves (9) are alternately distributed.

5. The electric shock prevention safety circuit breaker according to claim 1, wherein the unidirectional rotation assembly (8) comprises a ratchet wheel (801) fixed at the side end of the rotation ring (7), the ratchet wheel (801) is rotatably arranged inside the annular groove (6), a bump (802) is fixed on the operating handle (2), a first elastic sheet pawl (803) is fixed on one side, close to the ratchet wheel (801), of the bump (802), the first elastic sheet pawl (803) is meshed with the ratchet wheel (801), a second elastic sheet pawl (804) is fixed on the circuit breaker body (1), and the second elastic sheet pawl (804) is meshed with the ratchet wheel (801).