CN215377350U

CN215377350U - Locking and unlocking device of circuit breaker

Info

Publication number: CN215377350U
Application number: CN202022449772.7U
Authority: CN
Inventors: 孙斌朋; 董微娜; 徐朋生; 唐庭
Original assignee: Huanyu Hi Tech Co ltd
Current assignee: Huanyu Hi Tech Co ltd
Priority date: 2020-10-29
Filing date: 2020-10-29
Publication date: 2021-12-31
Anticipated expiration: 2030-10-29

Abstract

The utility model discloses a locking and unlocking device of a circuit breaker, which relates to the field of low-voltage electrical appliances and comprises a shell, a button, a limiting piece and a sliding block, wherein the button is arranged in the shell in a back-and-forth sliding mode, the sliding block is arranged in front of the button and fixedly connected with the button, the limiting piece is rotatably arranged in the shell and is arranged in front of the sliding block, the limiting piece is provided with a first position which is exposed outside the shell and staggered with the motion track of the sliding block and a second position which is retracted into the shell and is blocked in front of the sliding block and used for preventing the button from being switched on, and when the circuit breaker is in a switched-on state and the limiting piece is arranged in the first position, the sliding block is arranged below the limiting piece and is arranged in the rotation track of the limiting piece. The utility model has the advantages of good safety and reliable operation.

Description

Locking and unlocking device of circuit breaker

Technical Field

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

Background

The breaker is a switch capable of providing various protection functions, and can effectively improve the safety and reliability of electrical equipment 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.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the background art, the utility model provides a locking and unlocking device of a circuit breaker, which has good safety and reliable work.

The technical scheme adopted by the utility model is as follows: the utility model provides a locking and unlocking device of circuit breaker, its includes the casing, button, restriction piece and sliding block, but the button is installed with sliding back and forth in the casing, the sliding block is located the place ahead of button and both fixed connection, the rotatable installation of restriction piece just is located in the casing the place ahead of sliding block, the restriction piece has to show outside the casing and with the staggered first position of sliding block movement track and retract the casing in keep off the second position at sliding block the place ahead and prevent the button combined floodgate, when the circuit breaker is in combined floodgate state and restriction piece is in the first position the sliding block is located the below of restriction piece and in its rotation track.

But still including the straight line slip install unblock buckle in the casing, the unblock buckle is located the top of sliding block, unblock buckle front end is equipped with the extrusion boss, the extrusion boss can insert in the clearance between restriction piece and the casing and make restriction piece rotate to the second position.

The upper surface of the shell is provided with a first opening, the upper surface of the limiting part is provided with a pressed boss which can penetrate through the first opening, the front end of the limiting part is hinged in the shell, the rear end of the limiting part is provided with a limiting boss, the limiting boss is provided with a first abutting surface facing the sliding block, and the front end of the sliding block is provided with a second abutting surface corresponding to the first abutting surface.

Still include the elastic component, unblock buckle front end is equipped with the installation axle that supplies the elastic component to install, elastic component one end is installed unblock buckle is last, and its other end is installed on the restriction piece, the side of restriction piece is equipped with the baffle that prevents the elastic component other end and break away from.

The casing is equipped with the second opening, the unblock buckle includes straight portion, elastic component and wears out second open-ended promotion portion, it is located the end of unblock buckle to promote the position, straight portion is connected and the front end position is independent separately with the end position of elastic component, the extrusion boss is located the front end of straight portion, elastic component is equipped with card platform one that extends down along length direction downward sloping gradually and its front end, the casing is located the place ahead of elastic component direction of motion and is equipped with and blocks a platform one and constitute screens complex card platform two.

The upper surface of the sliding block is provided with a third clamping table corresponding to the first clamping table, the third clamping table and the first clamping table are in inclined sliding fit, the third clamping table moves linearly along with the sliding block and can push the first clamping table to be separated from the second clamping table.

When the pushing portion moves forwards to the inner wall of the front portion of the second opening, the first clamping table just crosses the second clamping table and forms clamping cooperation, and when the pushing portion moves backwards to the inner wall of the rear portion of the second opening, the extrusion boss just breaks away from the limiting piece.

The extrusion boss is in an acute angle shape, the upper surface of the limiting boss is provided with a slope, and a gap for inserting the extrusion boss is formed between the slope and the inner wall of the shell.

The utility model has the beneficial effects that: according to the technical scheme, the locking and unlocking device is in limit fit with the cabinet 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; under circuit breaker combined floodgate state, the restriction piece supports with the sliding block and keeps out the cooperation, and the restriction piece can not the withdrawal in the casing, just also can not insert the circuit breaker in the rack, prevents that the circuit breaker from installing in place, is favorable to further improving the assembly of miniature circuit breaker reliable and stable work.

Drawings

Fig. 1 is a schematic structural view of a locking and unlocking apparatus of a circuit breaker according to an embodiment of the present invention.

Fig. 2 is a schematic structural view of the locking and unlocking apparatus of the circuit breaker in the opening state.

Fig. 3 is a schematic structural view of the unlocking buckle pushed when the brake is opened.

Fig. 4 is a schematic structural view of pushing the unlocking buckle and pushing the button to close when the brake is opened.

Fig. 5 is a schematic structural diagram during closing.

Fig. 6 is a partially enlarged view of a portion a in fig. 4.

Fig. 7 is a schematic structural view of the unlocking buckle.

Fig. 8 is a schematic structural view of the unlocking buckle at another angle.

Fig. 9 is a schematic structural view of the restricting member.

Detailed Description

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

as shown in the figures, the locking and unlocking device of the circuit breaker comprises a shell 1, a button 2, a limiting piece 3 and a sliding block 4, wherein the button 2 is slidably mounted in the shell 1 back and forth, the sliding block 4 is positioned in front of the button 2 and fixedly connected with the button 2, the limiting piece 3 is rotatably mounted in the shell 1 and positioned in front of the sliding block 4, the limiting piece 3 has a first position exposed outside the shell 1 and staggered with the motion track of the sliding block 4 and a second position retracted inside the shell 1 and positioned in front of the sliding block 4 and used for preventing the button from being closed, and the sliding block 4 is positioned below the limiting piece 3 and positioned in the rotation track of the sliding block when the circuit breaker is in a closed state and the limiting piece 3 is positioned in the first position; according to the technical scheme, the locking and unlocking device is in limit fit with the cabinet 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; under circuit breaker combined floodgate state, the restriction piece supports with the sliding block and keeps out the cooperation, and the restriction piece can not the withdrawal in the casing, just also can not insert the circuit breaker in the rack, prevents that the circuit breaker from installing in place, is favorable to further improving the assembly of miniature circuit breaker reliable and stable work.

But still including the straight line slidable install unblock buckle 5 in the casing 1, unblock buckle 5 is located the top of sliding block 4, unblock buckle 5 front end is equipped with extrusion boss 51, extrusion boss 51 can insert in the clearance between restriction piece 3 and the casing 1 and make restriction piece 3 rotate to the second position.

The upper surface of the shell 1 is provided with a first opening 11, the upper surface of the limiting part 3 is provided with a pressed boss 31 capable of penetrating the first opening 11, the front end of the limiting part 3 is hinged to the shell 1, the rear end of the limiting part 3 is provided with a limiting boss 32, the limiting boss 32 is provided with a first resisting surface 33 facing the sliding block 4, the front end of the sliding block 4 is provided with a second resisting surface 41 corresponding to the first resisting surface 33, the first resisting surface and the second resisting surface are in inclined plane fit, the pressed boss is pressed down by the cabinet to retract into the shell, and the limiting boss of the limiting part rotates to the front of the sliding block and is just on the motion track of the pressed boss.

Still include elastic component 7, 5 front ends of unblock buckle are equipped with the installation axle 52 that supplies elastic component 7 to install, 7 one end of elastic component is installed unblock buckle 5 is last, and its other end is installed on the restriction piece 3, the side of restriction piece 3 is equipped with the baffle 34 that prevents the elastic component 7 other end and break away from, the elastic component is the restriction piece and stretches out the shell for providing a pretightning force all the time.

The shell 1 is provided with a second opening 12, the unlocking buckle 5 comprises a straight part 53, an elastic part 54 and a pushing part 55 penetrating out of the second opening 12, the pushing part 55 is positioned at the tail end of the unlocking buckle 5, the straight part 53 is connected with the tail end of the elastic part 54, the front end of the elastic part is independent, the extruding boss 51 is positioned at the front end of the straight part 53, the elastic part 54 gradually inclines downwards along the length direction, the front end of the elastic part is provided with a first clamping platform 56 extending downwards, a second clamping platform 13 forming clamping matching with the first clamping platform 56 is arranged in front of the shell 1 in the moving direction of the elastic part 54, the elastic part is matched with the second clamping platform and a third clamping platform by utilizing the elasticity of the material, the elastic part is opposite to the straight part and does not influence each other, the clamping matching between the first clamping platform and the second clamping platform can enable the extruding boss of the unlocking buckle to always press the limiting boss downwards, until the first clamping table is separated from the second clamping table, the state can not be cancelled.

The upper surface of the sliding block 4 is provided with a third clamping table 43 corresponding to the first clamping table 56, the third clamping table 43 and the first clamping table 56 are in inclined sliding fit, the third clamping table 43 follows the sliding block 4 to move linearly and can push the first clamping table 56 to separate from the second clamping table 13, and when the sliding block moves to the lower side of the first clamping table, the sliding block is in abutting contact fit with the first clamping table, and the first pushing clamping table separates from the second clamping table.

When the pushing portion 55 moves forward to the inner wall in front of the second opening 12, the first clamping table 56 just crosses the second clamping table 13 to form clamping fit, when the pushing portion 55 moves backward to the inner wall behind the second opening 12, the extrusion boss 51 just breaks away from the limiting member 3, the length of the second opening is required, the above two conditions must be met, and the limiting effect is achieved.

The extrusion boss 51 is in an acute angle shape, the upper surface of the limit boss 32 is provided with a slope 35, and a gap for inserting the extrusion boss 51 is formed between the slope 35 and the inner wall of the shell 1.

The locking 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 on the cabinet under the action of the elastic part.

And when the breaker is installed in place, the 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 cabinet, the first abutting surface of the limiting boss of the limiting part abuts against the second abutting surface of the sliding block, and the button cannot be switched on.

When the circuit breaker is in a closing state, the limiting boss of the limiting piece is propped against the second resisting surface of the sliding block; when the circuit breaker pushes towards the cabinet, the cabinet can block the compression boss, so that the circuit breaker cannot push into the cabinet.

When the circuit breaker is disassembled, the pushing part of the unlocking buckle needs to be pushed forwards, the extrusion boss of the unlocking buckle is inserted into a gap formed between the slope 35 and the inner wall of the shell 1 while moving forwards, the limiting part rotates under the pushing of the unlocking buckle, when the unlocking buckle is clamped and cannot be pushed forwards (the pushing part of the unlocking buckle reaches the front inner wall of the second opening), the unlocking buckle is hung on the shell and is in a fixed state (a first clamping table of the unlocking buckle and a second clamping table of the shell form clamping matching), the limiting boss of the limiting part rotates downwards, the limiting boss of the limiting part abuts against the sliding block, and the button cannot be switched on; the circuit breaker can now be pulled out of the cabinet.

When the circuit breaker needs to be installed again, the button is pulled to push the sliding block to move forwards, and the first clamping table of the unlocking buckle is jacked up by the third clamping table of the sliding block, so that the unlocking buckle is unlocked (the first clamping table is separated from the second clamping table); the two spacing bosss that withstand the restriction piece of face of support of sliding block simultaneously for the spacing boss upward movement of restriction piece, the spacing boss of restriction piece withstands the extrusion boss of unblock buckle simultaneously, is the inclined plane cooperation between the two, makes the unblock buckle move backward to initial position, is blocked by second open-ended rear inner wall, can't move backward again.

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 present invention has been described in terms of the above embodiments, the inventive concept is not limited to the above embodiments, and any modifications using the inventive concept are intended to be included within the scope of the appended claims.

Claims

1. A locking and unlocking device of a circuit breaker, characterized in that: it includes casing (1), button (2), restriction piece (3) and sliding block (4), but button (2) is installed with sliding back and forth in casing (1), sliding block (4) are located the place ahead of button (2) and two fixed connection, rotatable the installing of restriction piece (3) just are located in casing (1) the place ahead of sliding block (4), restriction piece (3) have reveal outside casing (1) and with the staggered first position of sliding block (4) movement track and retract casing (1) interior fender in sliding block (4) the place ahead and prevent the second position of button combined floodgate, when circuit breaker is in combined floodgate state and restriction piece (3) are in the first position sliding block (4) are located the below of restriction piece (3) and in its rotation track.

2. The locking and unlocking apparatus of circuit breaker according to claim 1, wherein: but still including the straight line slip install unblock buckle (5) in casing (1), unblock buckle (5) are located the top of sliding block (4), unblock buckle (5) front end is equipped with extrusion boss (51), extrusion boss (51) can insert in the clearance between restriction piece (3) and casing (1) and make restriction piece (3) rotate to the second position.

3. The locking and unlocking apparatus of circuit breaker according to claim 2, wherein: casing (1) upper surface is equipped with first opening (11), limiter (3) upper surface is equipped with and wears out the pressurized boss (31) of first opening (11), install in limiter (3) front end is articulated in casing (1), the rear end of limiter (3) is equipped with spacing boss (32), spacing boss (32) be equipped with towards the keep out face one (33) of sliding block (4), sliding block (4) front end is equipped with and keeps out face two (41) that correspond with keep out face one (33).

4. The locking and unlocking apparatus of circuit breaker according to claim 2, wherein: still include elastic component (7), unblock buckle (5) front end is equipped with installation axle (52) that supply elastic component (7) to install, elastic component (7) one end is installed unblock buckle (5) is last, and its other end is installed on limiter (3), the side of limiter (3) is equipped with baffle (34) that prevent the elastic component (7) other end and break away from.

5. The locking and unlocking apparatus of circuit breaker according to claim 2, wherein: casing (1) is equipped with second opening (12), unblock buckle (5) are including straight portion (53), elastic component (54) and wear out promotion portion (55) of second opening (12), promotion portion (55) are located the end of unblock buckle (5), straight portion (53) are connected and the front end position of elastic component (54) is independent separately, extrusion boss (51) are located the front end of straight portion (53), elastic component (54) incline downwards gradually along length direction and its front end are equipped with card platform one (56) that extend down, casing (1) are located the place ahead of elastic component (54) direction of motion and are equipped with and constitute screens complex card platform two (13) with card platform one (56).

6. The locking and unlocking apparatus of circuit breaker according to claim 5, wherein: the upper surface of the sliding block (4) is provided with a third clamping table (43) corresponding to the first clamping table (56), the third clamping table (43) and the first clamping table (56) are in inclined sliding fit, the third clamping table (43) moves linearly along with the sliding block (4) and can push the first clamping table (56) to separate from the second clamping table (13).

7. The locking and unlocking apparatus of circuit breaker according to claim 5, wherein: when pushing part (55) move forward to second opening (12) the place ahead inner wall department the ka tai (56) just cross ka tai two (13) and constitute the screens cooperation, pushing part (55) move backward when second opening (12) rear inner wall department extrusion boss (51) just break away from restriction piece (3).

8. The locking and unlocking apparatus of circuit breaker according to claim 3, wherein: extrusion boss (51) are the acute angle form, spacing boss (32) upper surface is equipped with slope (35), form the confession between slope (35) and casing (1) inner wall extrusion boss (51) male space.