CN111900046A

CN111900046A - Fixing and unlocking device of circuit breaker

Info

Publication number: CN111900046A
Application number: CN202010897349.5A
Authority: CN
Inventors: 王楚; 孙斌朋; 孙泽凯; 王春梅
Original assignee: Huanyu Group Zhejiang High Tech Co ltd
Current assignee: Huanyu Group Zhejiang High Tech Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2020-11-06

Abstract

The invention discloses a fixing and unlocking device of a circuit breaker, which relates to the field of low-voltage electrical appliances and comprises a shell, an operating button, a limiting piece and a handle, wherein the operating button is arranged in the shell in a linear sliding manner, the handle is rotatably arranged in the shell and positioned right in front of the operating button, the operating button is in linkage connection with the handle and drives the handle to rotate forward and backward, the limiting piece is arranged in the shell and positioned above the operating button, the limiting piece is provided with a pressure boss capable of being exposed or retracted into the shell, the limiting piece is provided with a first position which is in contact fit with the handle when the circuit breaker is in a closing state and is exposed outside the shell, and a second position which is in top contact fit with the handle to prevent the circuit breaker from being closed and the pressure boss from being retracted into. The invention has the advantages of good safety, stability and reliability.

Description

Fixing and unlocking device of circuit breaker

Technical Field

The invention relates to the field of low-voltage electric appliances, in particular to a fixing and unlocking device of a circuit breaker.

Background

The circuit breaker is used as a switch capable of providing various protection functions, and can effectively improve the safety and reliability of low-voltage electric appliances and power lines. In order to meet the increasingly diversified demands of users, specification diversification and miniaturization of circuit breakers are a trend.

The existing circuit breaker can directly carry out wiring operation under the condition that the existing circuit breaker is not installed in place in a closing state, is not beneficial to reliable and stable work of the circuit breaker, and also has potential safety hazards.

The existing circuit breaker has the risk of being pulled out by mistake in a power-on state after being installed in place, is not favorable for the reliable operation of the circuit breaker and electrical equipment, and has potential safety hazards.

Disclosure of Invention

In order to overcome the defects of the background art, the invention provides a fixing and unlocking device of a circuit breaker, which has good safety, stability and reliability.

The technical scheme adopted by the invention is as follows: the utility model provides a fixing and unlocking device of circuit breaker, its includes casing, operating button, restriction piece and handle, but the installing in the casing that operating button straight line slided, the handle is rotatable to be installed in the casing and is located operating button's dead ahead, the operating button linkage is connected the handle drives its just reversal, the restriction piece is installed just be located in the casing operating button's top, the restriction piece is equipped with the pressurized boss that can show or withdraw the casing, the restriction piece has constitutes the contact cooperation and the pressurized boss shows the first position outside the casing with the handle when the circuit breaker is in the combined floodgate state to and have and constitute the top with the handle and touch the cooperation and prevent the second combined floodgate position in circuit breaker and the pressurized boss withdrawal casing.

The limiting piece is characterized in that the rear end of the limiting piece is hinged in the shell, a first limiting boss matched with the handle is arranged at the front end of the limiting piece, a second limiting boss extending out along the radial direction and corresponding to the first limiting boss is arranged on the handle, and the front end face of the first limiting boss and the side wall face of the second limiting boss form interference fit when the limiting piece is located at the second position.

And an avoiding concave surface is arranged on one side, facing the second limiting boss, of the second limiting boss, and the avoiding concave surface is in contact fit with the outer circumferential surface of the second limiting boss when the limiting part is located at the first position.

A positioning step surface extends out of the circumferential surface of the handle, a positioning boss is arranged in the shell, and the avoidance concave surface is in contact fit with the outer circumferential surface of the second limiting boss and is also in contact fit with the positioning boss.

The rear end of restriction piece still is equipped with downwardly extending's swing boss one, operating button's upper surface is equipped with the swing boss two that is located swing boss one dead ahead, when operating button is pulled back the second pressurized boss withdrawal casing that contradicts swing boss two and drive the restriction piece of swing boss.

And an avoiding groove corresponding to the second swing boss is formed in the lower surface of the limiting piece, and the length of the avoiding groove is larger than the movement stroke of the second swing boss.

Still include the elastic component, still be equipped with the confession on the restriction piece the installation axle of elastic component suit, the one end of elastic component is fixed to be set up, and its other end is contradicted and is installed on the restriction piece, the side of restriction piece is equipped with the fender position boss that restriction elastic component removed.

The front end of the operating button is provided with a first mounting hole, the circumference of the handle is provided with a second mounting hole, and a connecting rod which is hinged with the first mounting hole and the second mounting hole is arranged between the first mounting hole and the second mounting hole.

The invention has the beneficial effects that: according to the technical scheme, the fixing and unlocking device is in limit fit with the shell of the circuit breaker, so that the small circuit breaker is ensured to be assembled reliably and stably and prevented from being pulled out after being assembled in place; the fixing and unlocking device is matched with the button in a blocking way to prevent the circuit breaker from being installed in place in the closing state of the circuit breaker; when the circuit breaker is pushed into the cabinet and the limiting boss of the limiting piece is pressed into the shell by the cabinet when the locking boss is pressed into the shell, the handle can be propped against the limiting boss, and the circuit breaker is prevented from being switched on; the assembly reliability and the stable work of the miniature circuit breaker can be further improved.

Drawings

Fig. 1 is a schematic structural diagram of an operation button.

Fig. 2 is a schematic structural view of the operation button at another angle.

Fig. 3 is a schematic structural view of the handle.

Fig. 4 is a schematic structural view of the restricting member.

Fig. 5 is a schematic view of the restriction member in a first position.

Fig. 6 is a schematic structural view of a fixing and unlocking device of a circuit breaker according to an embodiment of the present invention.

Fig. 7 is a schematic view of the restriction member in a second position.

Fig. 8 is a schematic view of the operation button when pulled back to bring the restricting member back into the housing.

Fig. 9 is a partial enlarged view of a portion a in fig. 5.

Fig. 10 is a partial enlarged view of fig. 7 at B.

Fig. 11 is a partial enlarged view at C in fig. 8.

Detailed Description

The embodiments of the invention will be further described with reference to the accompanying drawings in which:

as shown in the drawings, a fixing and unlocking apparatus of a circuit breaker, which includes a housing 1, an operation button 2, a restriction member 3, and a handle 4, the operating button 2 is arranged in the shell 1 in a linear sliding way, the handle 4 is rotatably arranged in the shell 1 and is positioned right in front of the operating button 2, the operating button 2 is linked with the handle 4 and drives the handle to rotate positively and negatively, the limiting piece 3 is arranged in the shell 1 and is positioned above the operating button 2, the limiting piece 3 is provided with a pressed boss 31 which can be exposed or retracted into the shell 1, the limiting piece 3 is provided with a first position which is in contact fit with the handle 4 when the circuit breaker is in a closing state, and the pressed boss 31 is exposed out of the shell 1, and a second position which forms a top contact fit with the handle 4 to prevent the breaker from closing and the pressed boss 31 retracts into the shell 1; according to the technical scheme, the fixing and unlocking device is in limit fit with the shell of the circuit breaker, so that the small circuit breaker is ensured to be assembled reliably and stably and prevented from being pulled out after being assembled in place; the fixing and unlocking device is matched with the button in a blocking way to prevent the circuit breaker from being installed in place in the closing state of the circuit breaker; when the circuit breaker is pushed into the cabinet and the limiting boss of the limiting piece is pressed into the shell by the cabinet when the locking boss is pressed into the shell, the handle can be propped against the limiting boss, and the circuit breaker is prevented from being switched on; the assembly reliability and the stable work of the miniature circuit breaker can be further improved.

The rear end of the limiting part 3 is hinged to the inside of the shell 1, the front end of the limiting part 3 is provided with a first limiting boss 32 matched with the handle 4, the handle 4 is provided with a second limiting boss 41 extending out along the radial direction and corresponding to the first limiting boss 32, when the limiting part 3 is located at the second position, the front end face of the first limiting boss 32 and the side wall face of the second limiting boss 41 form interference fit, at the moment, the operating button cannot be pushed to be switched on, as shown in fig. 7 and 10 after the front end face of the first limiting boss 32 and the side wall face of the second limiting boss 41 form interference fit, the handle cannot continue to rotate anticlockwise, and the operating button cannot move forwards.

The first limiting boss 32 is provided with an avoiding concave surface 33 on one side facing the second limiting boss 41, when the limiting part 3 is located at the first position, the avoiding concave surface 33 is in contact fit with the outer circumferential surface of the second limiting boss 41, the structure of the limiting part is shown in fig. 5 and 9, the outer circumferential surface of the second limiting boss abuts against the avoiding concave surface above the second limiting boss, the limiting part cannot rotate, and meanwhile, the cabinet cannot be inserted into or pulled out of the cabinet in a closing state of the circuit breaker.

A positioning step surface 42 extends from the circumferential surface of the handle 4, a positioning boss 11 is arranged in the shell 1, the avoiding concave surface 33 is in contact fit with the outer circumferential surface of the second limiting boss 41, meanwhile, the positioning step surface 42 is in contact fit with the positioning boss 11, as shown in fig. 9, when the positioning step surface is in contact with the positioning boss, it is shown that the circuit breaker is switched on in place, the corresponding second limiting boss is just located below the avoiding concave surface, and the two limiting bosses are in contact with each other.

The rear end of the limiting piece 3 is also provided with a first swinging boss 34 extending downwards, the upper surface of the operating button 2 is provided with a second swinging boss 21 positioned right in front of the first swinging boss 34, and when the operating button 2 is pulled back, the second swinging boss 21 props against the second swinging boss 21 and drives the pressed boss 31 of the limiting piece 3 to retract into the shell 1; when the circuit breaker is disassembled, the operating button needs to be pulled outwards, the second swing boss of the limiting part rotates under the pushing of the first swing boss of the operating button boss, the pressed boss of the limiting part retracts into the shell, and the circuit breaker can be pulled out of the cabinet.

An avoiding groove 35 corresponding to the second swing boss 21 is formed in the lower surface of the limiting part 3, the length of the avoiding groove 35 is larger than the movement stroke of the second swing boss 21, and the interference prevention effect is achieved.

Still include elastic component 5, still be equipped with on the limiter 3 and supply the installation axle 36 of elastic component 5 suit, the one end of elastic component 5 is fixed to be set up, and its other end is contradicted and is installed on the limiter 3, the side of limiter 3 is equipped with fender position boss 37 that restriction elastic component 5 removed, the one end of elastic component is fixed to be set up this sentence relatively, because as shown in fig. 5, the one end of elastic component is contradicted on hasp 8, and hasp 8 is fixed for the limiter, and this embodiment does not give detailed description to the hasp.

The front end of the operating button 2 is provided with a first mounting hole 22, the circumference of the handle 4 is provided with a second mounting hole 43, a connecting rod 6 which is hinged with the first mounting hole 22 and the second mounting hole 43 is arranged between the first mounting hole 22 and the second mounting hole 43, and the operating button can move forwards and backwards to drive the handle to rotate forwards and backwards through the connecting rod.

The fixing and unlocking device of the present embodiment has the following specific states:

when the breaker is in an opening state, the limiting piece is propped against the shell under the action of the elastic piece, and the pressed boss of the limiting piece is exposed outside the shell;

the circuit breaker is pushed into the cabinet, the pressure boss of the limiting part is pressed down by the cabinet, the circuit breaker is pushed into the cabinet, and after the circuit breaker is pushed to the position, the pressure boss of the limiting part is clamped in the mounting groove of the cabinet under the action of the elastic part;

when the breaker is installed in place, the operating button is pushed to switch on, and the switch-on of the breaker is completed;

if the circuit breaker is not installed in place, the pressed boss of the limiting part is pressed down by the inner wall of the cabinet, the limiting boss of the limiting part props against the handle boss, and the operating button cannot be switched on;

when the breaker is in a switching-on state, the avoidance concave surface 33 of the first limiting boss is in contact fit with the outer circumferential surface of the second limiting boss 41, a state that the second limiting boss abuts against the first limiting boss is formed, the compression boss of the limiting part is prevented from retracting into the shell, and when the breaker is pushed into the cabinet, the cabinet can clamp the compression boss, so that the breaker cannot be pushed into the cabinet;

when the circuit breaker is disassembled, the operating button needs to be pulled outwards, the second swing boss of the limiting part rotates under the pushing of the first swing boss of the operating button boss, the pressed boss of the limiting part retracts into the shell, and the circuit breaker can be pulled out of the cabinet.

In the description of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art. In addition, in the description of the present invention, "a plurality" means two or more unless otherwise specified.

The skilled person should understand that: although the invention has been described in terms of the above specific embodiments, the inventive concept is not limited thereto and any modification applying the inventive concept is intended to be included within the scope of the patent claims.

Claims

1. A fixing and unlocking device of a circuit breaker is characterized in that: which comprises a shell (1), an operating button (2), a limiting piece (3) and a handle (4), the operating button (2) is arranged in the shell (1) in a linear sliding manner, the handle (4) is rotatably arranged in the shell (1) and is positioned right in front of the operating button (2), the operating button (2) is linked with the handle (4) and drives the handle to rotate forwards and backwards, the limiting piece (3) is arranged in the shell (1) and is positioned above the operating button (2), the limiting piece (3) is provided with a pressure boss (31) which can be exposed or retracted into the shell (1), the limiting piece (3) is provided with a first position which is in contact fit with the handle (4) when the circuit breaker is in a closing state and the pressure boss (31) is exposed outside the shell (1), and a second position which is in top contact fit with the handle (4) to prevent the breaker from being switched on and the pressed boss (31) retracts into the shell (1).

2. The fixing and unlocking apparatus of circuit breaker according to claim 1, wherein: the articulated installation of restriction piece (3) rear end is in casing (1), the front end of restriction piece (3) be equipped with handle (4) complex spacing boss one (32), handle (4) are equipped with and extend out along radial direction and with spacing boss two (41) that spacing boss one (32) correspond, when restriction piece (3) are in the second position the preceding terminal surface of spacing boss one (32) constitutes the cooperation of contradicting with the lateral wall face of spacing boss two (41).

3. The fixing and unlocking apparatus of circuit breaker according to claim 2, wherein: spacing boss one (32) are equipped with to dodge concave surface (33) towards one side of spacing boss two (41), when limiter (3) are in the first position dodge concave surface (33) with the outer periphery of spacing boss two (41) constitutes the contact cooperation.

4. The fixing and unlocking apparatus of circuit breaker according to claim 3, wherein: the circumference face of handle (4) still extends a location step face (42), be equipped with location boss (11) in casing (1), dodge concave surface (33) with the outer periphery of spacing boss two (41) constitutes the contact cooperation when location step face (42) also constitutes the contact cooperation with location boss (11).

5. The fixing and unlocking apparatus of circuit breaker according to claim 1, wherein: the rear end of restriction piece (3) still is equipped with downwardly extending's swing boss one (34), the upper surface of operating button (2) is equipped with and is located swing boss two (21) directly in the place ahead of swing boss one (34), when operating button (2) pull back swing boss two (21) are contradicted swing boss two (21) and are driven pressurized boss (31) retraction casing (1) of restriction piece (3).

6. The fixing and unlocking apparatus of circuit breaker according to claim 5, wherein: an avoiding groove (35) corresponding to the second swing boss (21) is formed in the lower surface of the limiting piece (3), and the length of the avoiding groove (35) is larger than the movement stroke of the second swing boss (21).

7. The fixing and unlocking apparatus of circuit breaker according to claim 1, wherein: still include elastic component (5), still be equipped with the confession on restriction piece (3) installation axle (36) of elastic component (5) suit, the one end of elastic component (5) is fixed to be set up, and its other end conflict is installed on restriction piece (3), the side of restriction piece (3) is equipped with fender position boss (37) that restriction elastic component (5) removed.

8. The fixing and unlocking apparatus of circuit breaker according to claim 1, wherein: the front end of the operating button (2) is provided with a first mounting hole (22), the circumferential direction of the handle (4) is provided with a second mounting hole (43), and a connecting rod (6) which is hinged with the first mounting hole (22) and the second mounting hole (43) is arranged between the first mounting hole (22) and the second mounting hole (43).