CN219677174U - Fixed release mechanism and circuit breaker - Google Patents

Abstract

The utility model provides a fixed unlocking mechanism and a circuit breaker, and relates to the technical field of piezoelectric devices. The fixed unlocking mechanism of the present utility model comprises: the shell and the unlocking piece movably arranged in the shell are provided with a pressing end and a driving end, the driving end is abutted with the opening and closing assembly in the shell, the pressing end is driven to move in the shell, and the driving end is driven to drive the opening and closing assembly to open the gate and limit the opening and closing assembly to prevent the opening and closing assembly from closing the gate again. This fixed release mechanism has increased the release in the casing, utilizes release and closes the brake subassembly and form the butt relation, through pressing the release, can drive to close the brake subassembly and break brake to make it keep in the unable closing a floodgate of brake state, in order to guarantee that the user is dismantling or during the installation operation to the circuit breaker, the circuit breaker is uncharged. After the unlocking piece is reset, the limit of the opening and closing assembly is released, and the circuit breaker is also released from the limit, so that opening and closing can be freely performed.

Description

Fixed release mechanism and circuit breaker

Technical Field

The utility model relates to the technical field of piezoelectric devices, in particular to a fixed unlocking mechanism and a circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying and opening a current under normal loop conditions and closing, carrying and opening a current under abnormal loop conditions within a prescribed time, and has a short circuit, overload or leakage protection function.

The circuit breaker is installed in the fixing base through the buckle, and the circuit breaker is plugged and fixed through the buckle retracting into or extending out of the shell. When the existing circuit breaker is pulled out, the existing circuit breaker is possibly in a closing state, and the danger is easy to occur in the live operation of staff.

Disclosure of Invention

The utility model aims to overcome the defects in the prior art and provide a fixed unlocking mechanism and a circuit breaker so as to solve the problem that the circuit breaker can be electrified during disassembly or assembly.

In order to achieve the above purpose, the technical scheme adopted by the embodiment of the utility model is as follows:

in one aspect of an embodiment of the present utility model, there is provided a fixed unlocking mechanism, including: the shell and the unlocking piece movably arranged in the shell are provided with a pressing end and a driving end, the driving end is abutted with the opening and closing assembly in the shell, the pressing end is driven to move in the shell, and the driving end is driven to drive the opening and closing assembly to open the gate and limit the opening and closing assembly to prevent the opening and closing assembly from closing the gate again.

Optionally, the unlocking piece includes interconnect's first unlocking arm and second unlocking arm, and the unlocking piece rotates and sets up in the casing, and the surface that first unlocking arm kept away from the second unlocking arm is the press surface, and the press end of unlocking piece is located the press surface, and the surface that the second unlocking arm kept away from first unlocking arm is the driving surface, driving surface and break in floodgate subassembly butt.

Optionally, still including the activity setting buckle in the casing, the buckle has the second end that can stretch out in the first end of casing and be connected with the unblock piece drive, the first end of buckle links with the pressing end of unblock piece, in the first end of buckle contracts into the casing, the pressing end of unblock piece moves towards the casing.

Optionally, the unlocking piece comprises a connecting arm, one of the surface of the connecting arm and the second end of the buckle is provided with a connecting column, the other connecting column is provided with a waist-shaped hole, and the connecting column stretches into the waist-shaped hole and slides in the waist-shaped hole.

Optionally, the unlocking piece is provided with a first limiting hole, the shell is provided with a first limiting shaft matched with the first limiting hole, the unlocking piece is sleeved on the first limiting shaft through the first limiting hole and rotates around the first limiting shaft, a first torsion spring sleeved on the first limiting shaft is arranged in the first limiting hole, and two torsion arms of the first torsion spring are respectively abutted to the shell and the unlocking piece.

Optionally, the angle between the first unlocking arm and the second unlocking arm is an acute angle or a right angle.

Optionally, the first end of buckle has butt face and inclined plane, and butt face and inclined plane are along the direction interval setting of casing insertion fixing base, and the fixing base is through inclined plane drive buckle shrink casing, and the casing moves the back that targets in place, and the buckle pops out in the casing, butt face and casing butt.

Optionally, a second limiting hole is formed in the buckle, a second limiting shaft matched with the second limiting hole is arranged on the shell, the buckle is sleeved on the second limiting shaft through the second limiting hole and rotates around the second limiting shaft, a second torsion spring sleeved on the second limiting shaft is arranged in the second limiting hole, and two torsion arms of the second torsion spring are respectively in butt joint with the shell and the buckle.

Optionally, the on-off brake assembly comprises a lock catch and a jump button which are matched with each other, the driving end of the unlocking piece is in butt joint with the lock catch, the pressing end is driven to retract into the shell, and the driving end drives the lock catch to be separated from the jump button, so that the on-off brake assembly is unlocked and cannot be closed.

In another aspect of an embodiment of the present utility model, there is provided a circuit breaker including a fixed unlocking mechanism as defined in any one of the above.

The beneficial effects of the utility model include:

the utility model provides a fixed unlocking mechanism, comprising: the shell and the unlocking piece movably arranged in the shell are provided with a pressing end and a driving end, the driving end is abutted with the opening and closing assembly in the shell, the pressing end is driven to move in the shell, and the driving end is driven to drive the opening and closing assembly to open the gate and limit the opening and closing assembly to prevent the opening and closing assembly from closing the gate again. This fixed release mechanism has increased the release in the casing, utilizes release and closes the brake subassembly and form the butt relation, through pressing the release, can drive to close the brake subassembly and break brake to make it keep in the unable closing a floodgate of brake state, in order to guarantee that the user is dismantling or during the installation operation to the circuit breaker, the circuit breaker is uncharged. After the unlocking piece is reset, the limit of the opening and closing assembly is released, and the circuit breaker is also released from the limit, so that opening and closing can be freely performed.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present utility model and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a fixing and unlocking mechanism according to an embodiment of the present utility model;

fig. 2 is a schematic diagram of a process of inserting a circuit breaker into a fixing seat according to an embodiment of the present utility model;

fig. 3 is a second schematic diagram of a circuit breaker inserting process according to an embodiment of the present utility model;

fig. 4 is a schematic diagram of a process of pulling out a circuit breaker from a fixing base according to an embodiment of the present utility model;

fig. 5 is a second schematic diagram of a process of pulling out the circuit breaker from the fixing base according to the embodiment of the present utility model;

fig. 6 is a schematic structural diagram of an unlocking member in the fixed unlocking mechanism according to the embodiment of the present utility model;

fig. 7 is a schematic structural diagram of a buckle in a fixing and unlocking mechanism according to an embodiment of the present utility model.

Icon: 100-fixing an unlocking mechanism; 110-a housing; 111-a first limiting shaft; 112-a second limiting shaft; 113-a first opening; 120-unlocking piece; 121-a pressing end; 122-driving end; 123-a first unlocking arm; 1231-pressing surface; 124-a second unlocking arm; 1241-drive surface; 125-a connecting arm; 1251-connecting columns; 126-a first limiting hole; 130-snap; 131-a first end; 132-a second end; 133-waist-shaped holes; 134-abutment surface; 135-inclined plane; 136-a second limiting hole; 140-a first torsion spring; 200-a circuit breaker; 210-an on-off brake assembly; 211-locking catches; 300-fixing seat; 310-a second opening.

Detailed Description

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model, and it is apparent that the described embodiments are some embodiments of the present utility model, but not all embodiments of the present utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. It should be noted that, under the condition of no conflict, the features of the embodiments of the present utility model may be combined with each other, and the combined embodiments still fall within the protection scope of the present utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures.

In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or those that are conventionally put in use for the product of the application, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or elements referred to must have a specific direction, be configured and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance.

In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

In one aspect of an embodiment of the present utility model, referring to fig. 1 and 2, there is provided a fixed unlocking mechanism 100 comprising: the shell 110 and the unlocking piece 120 movably arranged in the shell 110, the unlocking piece 120 is provided with a pressing end 121 and a driving end 122, the driving end 122 is in butt joint with the opening and closing assembly 210 in the shell 110, the pressing end 121 is driven to move into the shell 110, and the driving end 122 is driven to drive the opening and closing assembly 210 to open the gate and limit the opening and closing assembly 210 to prevent the opening and closing assembly 210 from being closed again.

The fixed unlocking mechanism 100 can be applied to the circuit breaker 200, and comprises a housing 110 and an unlocking member 120, wherein the unlocking member 120 is arranged in the housing 110, can move, such as rotate or slide, relative to the housing 110 after being driven, and can reset after the driving force is released. The unlocking piece 120 has a pressing end 121 and a driving end 122 which are interlocked with each other, the pressing end 121 faces the user side and can be exposed out of the shell 110, and the driving end 122 is in contact with the opening and closing assembly 210; the user presses the unlocking member 120 at the pressing end 121, so as to drive the unlocking member 120 to move, and further change the position of the driving end 122, so that the driving end 122 applies pressure to the closing and opening assembly 210, and drives the closing and opening assembly 210 to change from closing to opening, and to keep in a state of opening (i.e. unable to close). After the unlocking member 120 is driven, the driving end 122 is reset, the limit of the opening and closing assembly 210 is released, and the circuit breaker 200 is also released, so that opening and closing can be freely performed.

In the present embodiment, the structure of the unlocking member 120 is not limited, as long as it can drive the opening/closing assembly 210 to open when pressed, and keep the opening/closing assembly 210 in the opening state. Similarly, the contact position between the unlocking member 120 and the opening/closing unit 210 is not limited, as long as the opening/closing unit 210 can be driven to open and kept in the open state.

In the above-mentioned fixed unlocking mechanism 100, the unlocking member 120 is added in the housing 110, and the unlocking member 120 is utilized to form an abutting relationship with the opening and closing assembly 210, and the opening and closing assembly 210 can be driven to open by pressing the unlocking member 120, and can be kept in an opening state to be unable to close, so as to ensure that the breaker 200 is not electrified when a user performs the disassembling or assembling operation on the breaker 200. After the unlocking member 120 is reset, the limit of the opening and closing assembly 210 is released, and the circuit breaker 200 is also released, so that opening and closing can be freely performed.

Referring to fig. 2, 3 and 6, in an alternative implementation manner of the embodiment of the present utility model, the unlocking member 120 includes a first unlocking arm 123 and a second unlocking arm 124 that are connected to each other, the unlocking member 120 is rotatably disposed in the housing 110, a surface of the first unlocking arm 123 away from the second unlocking arm 124 is a pressing surface 1231, a pressing end 121 of the unlocking member 120 is located on the pressing surface 1231, a surface of the second unlocking arm 124 away from the first unlocking arm 123 is a driving surface 1241, and the driving surface 1241 is abutted to the opening and closing assembly 210.

Illustratively, the first unlocking arm 123 and the second unlocking arm 124 are connected in a V-shape, and the rotation axis of the unlocking member 120 is located at the connection between the first unlocking arm 123 and the second unlocking arm 124 and perpendicular to the plane in which the first unlocking arm 123 and the second unlocking arm 124 lie. Further, the driving surface 1241 is disposed obliquely with respect to the pressing surface 1231, that is, an included angle between the driving surface 1241 and the pressing surface 1231 is an acute angle or an obtuse angle, so that the driving surface 1241 can drive the opening and closing assembly 210 to realize opening by rotating, and continuously apply an oblique downward force to the opening and closing assembly 210, so that the opening and closing assembly cannot be closed again, and meanwhile, the locking between the unlocking member 120 and the opening and closing assembly 210 can be avoided.

Illustratively, the first unlocking arm 123 and the second unlocking arm 124 are connected in a T-shape, the end of the second unlocking arm 124 is connected perpendicularly to the first unlocking arm 123, and the rotation axis of the unlocking member 120 is located at the end of the first unlocking arm 123, and at this time, the pressing surface 1231 of the unlocking member 120 is parallel to the driving surface 1241.

Alternatively, in one implementation of the embodiment of the present utility model, the angle between the first unlocking arm 123 and the second unlocking arm 124 is an acute angle or a right angle.

Setting the included angle between the first unlocking arm 123 and the second unlocking arm 124 to be an acute angle or a right angle can save space along the insertion direction (in the a direction) in the housing 110, reduce the size of the housing 110 in the insertion direction, and simultaneously facilitate driving of the opening and closing assembly 210.

Referring to fig. 2 to 5, in an alternative implementation manner of the embodiment of the present utility model, the device further includes a buckle 130 movably disposed in the housing 110, the buckle 130 has a first end 131 capable of extending out of the housing 110 and a second end 132 in driving connection with the unlocking member 120, the first end 131 of the buckle 130 is linked with the pressing end 121 of the unlocking member 120, the first end 131 of the buckle 130 is retracted into the housing 110, and the pressing end 121 of the unlocking member 120 moves towards the housing 110.

The housing 110 is further provided with a buckle 130 coupled to the unlocking member 120, and the buckle 130 can move, such as rotate or slide, relative to the housing 110. The housing 110 is provided with a first opening 113, the buckle 130 has a first end 131 and a second end 132 opposite to each other, wherein the first end 131 is retracted into or extended out of the housing 110 through the first opening 113, and the second end 132 is in driving connection with the unlocking member 120, i.e. the buckle 130 moves, so that the unlocking member 120 can be driven to move, and in turn, the unlocking member 120 can also be driven to move. The first end 131 of the buckle 130 and the pressing end 121 of the unlocking member 120 can move towards the inside of the shell 110 or the outside of the shell 110 at the same time, so that when the buckle 130 is driven to retract into the shell 110, the pressing end 121 of the unlocking member 120 also moves towards the inside of the shell 110, and the driving end 122 drives the opening and closing assembly 210 to open the gate and can not close the gate again, so that the electrified operation of a user can be avoided; conversely, when the unlocking member 120 is pressed, the opening and closing assembly 210 can be driven to open and cannot be closed again, and the buckle 130 can be retracted into the housing 110, so that the housing 110 can be conveniently inserted and pulled out.

The operation principle of the fixed unlocking mechanism 100 will be described by taking an example in which the fixed unlocking mechanism 100 is applied to the circuit breaker 200 and the circuit breaker 200 is inserted into and removed from the cabinet. As shown in fig. 2, when the circuit breaker 200 is inserted into the fixing seat 300 along the direction a and the circuit breaker 200 is not in place, the buckle 130 is pressed in the housing 110, so that the pressing end 121 of the unlocking member 120 also moves into the housing 110, and the driving end 122 drives the opening and closing assembly 210 to open and cannot close again; as shown in fig. 3, after the circuit breaker 200 is installed in place, the buckle 130 pops up and is snapped into the second opening 310 of the fixing base 300 to perform a fixing function, at this time, the pressing end 121 of the unlocking member 120 also moves outwards to be exposed out of the housing 110, the driving end 122 no longer limits the opening and closing assembly 210, and the circuit breaker 200 can perform opening and closing operations normally. As shown in fig. 4 and fig. 5, when the circuit breaker 200 is to be pulled out along the direction B, the pressing end 121 of the unlocking member 120 is pressed, the driving end 122 drives the opening and closing assembly 210 to open and cannot close again, and meanwhile, the first end 131 of the buckle 130 is retracted into the housing 110, so that the circuit breaker 200 can be pulled out from the cabinet.

Alternatively, in one implementation of the embodiment of the present utility model, the buckle 130 protrudes from the housing 110, and the pressing surface 1231 is flush with the surface of the housing 110.

When the buckle 130 is in an initial state (a state of not receiving an external force), the unlocking member 120 is also in an initial state, and at this time, the pressing surface 1231 of the unlocking member 120 is flush with the surface of the housing 110, so as to facilitate the user's operation and ensure the beauty.

Alternatively, in one possible implementation of the embodiment of the present utility model, the unlocking member 120 includes a connection arm 125, one of the surface of the connection arm 125 and the second end 132 of the buckle 130 is provided with a connection post 1251, and the other is provided with a waist-shaped hole 133, and the connection post 1251 extends into the waist-shaped hole 133 and slides in the waist-shaped hole 133.

The unlocking member 120 comprises a connecting arm 125, and the end of the connecting arm 125 extends to the position of the buckle 130 for driving connection with the buckle 130. The connecting arm 125 and the catch 130 are interlocked with the waist-shaped hole 133 through the connecting post 1251. Specifically, the connecting arm 125 and the buckle 130 have surfaces parallel to each other, and the two surfaces are perpendicular to the rotation axis of the unlocking member 120, in an embodiment, the surface of the connecting arm 125 is provided with a connecting post 1251, and the surface of the buckle 130 is provided with a waist-shaped hole 133; in another embodiment, the surface of the connecting arm 125 is provided with a waist-shaped hole 133, and the surface of the buckle 130 is provided with a connecting post 1251; the connection post 1251 protrudes into the waist-shaped hole 133, and the width of the waist-shaped hole 133 is equal to or slightly larger than the diameter of the connection post 1251, and the connection post 1251 is slidable in the waist-shaped hole 133 along the length direction thereof.

Referring to fig. 2, 3 and 7, in an alternative implementation manner of the embodiment of the utility model, the first end 131 of the buckle 130 has an abutment surface 134 and an inclined surface 135, the abutment surface 134 and the inclined surface 135 are disposed at intervals along the direction that the housing 110 is inserted into the fixing seat 300, the fixing seat 300 drives the buckle 130 to retract into the housing 110 through the inclined surface 135, after the housing 110 moves in place, the buckle 130 pops out through the housing 110, and the abutment surface 134 abuts against the housing 110.

The first end 131 of the buckle 130 has an opposite abutting surface 134 and an inclined surface 135 along the insertion direction (direction a), wherein in the initial state (the state of not receiving an external force) of the buckle 130, the inclined surface 135 forms an acute angle with the surface of the fixing base 300 and an obtuse angle with the insertion direction. As shown in fig. 2, when the housing 110 is inserted into the fixing base 300, the edge of the fixing base 300 contacts the inclined surface 135 of the buckle 130, and as the housing 110 stretches in, the edge of the fixing base 300 presses the buckle 130 into the housing 110, so that the housing 110 smoothly enters the fixing base 300; as shown in fig. 3, when the housing 110 moves in place, the second opening 310 is disposed at the corresponding position of the fixing base 300, and the second opening 310 is disposed to release the restriction of the fixing base 300 on the buckle 130, so that the buckle 130 pops out of the housing 110 and stretches into the second opening 310, and the abutment surface 134 abuts against the side wall of the second opening 310 to fix the housing 110.

Referring to fig. 1, in an alternative implementation manner of the embodiment of the present utility model, a first limiting hole 126 is formed on the unlocking member 120, a first limiting shaft 111 matched with the first limiting hole 126 is formed on the housing 110, the unlocking member 120 is sleeved on the first limiting shaft 111 through the first limiting hole 126 and rotates around the first limiting shaft 111, a first torsion spring 140 sleeved on the first limiting shaft 111 is disposed in the first limiting hole 126, and two torsion arms of the first torsion spring 140 are respectively abutted with the housing 110 and the unlocking member 120.

The unlocking piece 120 and the shell 110 are in rotary connection in a shaft hole matching mode, and in view of the fact that the thickness of the shell 110 is thinner, the first limiting hole 126 is formed in the unlocking piece 120, the first limiting shaft 111 is arranged on the shell 110, and the unlocking piece 120 is driven to rotate around the first limiting shaft 111. Illustratively, the first limiting aperture 126 is disposed between the first unlocking arm 123 and the connecting arm 125, or the first limiting aperture 126 is disposed on the connecting arm 125.

In order to enable the unlocking piece 120 to automatically reset, a first torsion spring 140 is further arranged in the first limiting hole 126, the first torsion spring 140 is sleeved on the first limiting shaft 111, and the first torsion spring 140 is provided with two torsion arms, wherein one torsion arm is in butt joint with the unlocking piece 120, and the other torsion arm is in butt joint with the shell 110. When the unlocking member 120 is at the initial position, the first torsion spring 140 is also at an initial state of non-deformation; when the unlocking member 120 is driven to rotate relative to the housing 110, the unlocking member 120 drives the torsion arm on the first torsion spring 140 to move together with the torsion arm in contact with the first torsion spring, so that the first torsion spring 140 deforms to store energy; when the external force applied to the unlocking member 120 disappears, the first torsion spring 140 is restored to release energy, and then drives the unlocking member 120 to return to the initial position.

The restoring member for automatically restoring the unlocking member 120 is not limited to the torsion spring, and other elastic members may be provided in the first limiting hole 126, as long as the restoring function is achieved.

Optionally, in an implementation manner of the embodiment of the present utility model, a second limiting hole 136 is provided on the buckle 130, a second limiting shaft 112 matched with the second limiting hole 136 is provided on the housing 110, the buckle 130 is sleeved on the second limiting shaft 112 through the second limiting hole 136 and rotates around the second limiting shaft 112, a second torsion spring sleeved on the second limiting shaft 112 is provided in the second limiting hole 136, and two torsion arms of the second torsion spring are respectively abutted with the housing 110 and the buckle 130.

The snap 130 and the housing 110 are also rotatably connected by means of shaft hole fitting, and since the thickness of the housing 110 is thin, the hole is provided on the snap 130 and the shaft is provided on the housing 110. Specifically, the second limiting hole 136 is disposed on the buckle 130, the axis of the second limiting hole 136 is the rotation axis of the buckle 130, correspondingly, the second limiting shaft 112 matched with the second limiting hole 136 is disposed on the housing 110, and the buckle 130 is driven to rotate around the second limiting shaft 112.

In order to enable the buckle 130 to automatically reset, a second torsion spring is further disposed in the second limiting hole 136, and is sleeved on the second limiting shaft 112, wherein the second torsion spring has two torsion arms, one of which is abutted with the buckle 130, and the other of which is abutted with the housing 110. When the buckle 130 is at the initial position, the second torsion spring is also at an initial state of non-deformation; when the buckle 130 is driven to rotate relative to the housing 110, the buckle 130 drives the torsion arm abutting against the second torsion spring to move together, so that the second torsion spring deforms and stores energy; when the external force acting on the buckle 130 disappears, the second torsion spring is restored to release energy, and the buckle 130 is driven to return to the initial position. Of course, the restoring member for automatically restoring the buckle 130 is not limited to the torsion spring, and other elastic members may be provided in the second limiting hole 136, as long as the restoring function can be achieved.

Referring to fig. 1, in an alternative implementation manner of the embodiment of the present utility model, the closing and opening assembly 210 includes a latch 211 and a trip buckle that are matched with each other, a driving end 122 of the unlocking member 120 is abutted with the latch 211, a pressing end 121 is driven to retract into the housing 110, and the driving end 122 drives the latch 211 to disengage from the trip buckle, so that the closing and opening assembly 210 is unlocked and cannot be closed.

The closing and opening assembly 210 comprises a lock catch 211 and a jump button, and when the lock catch 211 and the jump button are locked, the closing and opening assembly 210 is closed; when the lock catch 211 is disengaged from the trip button, the closing and opening assembly 210 opens and cannot be closed again. The driving end 122 of the unlocking piece 120 is abutted with the lock catch 211, the lock catch 211 is driven to be separated from the jump buckle, and the opening and closing assembly 210 is further opened, meanwhile, the lock catch 211 cannot be locked with the jump buckle again due to the blocking of the driving end 122, and the opening and closing assembly 210 cannot be closed again.

Referring to fig. 1, the present embodiment further provides a circuit breaker 200, including the fixing and unlocking mechanism 100 as described above.

The circuit breaker 200 includes the same structure and advantages as the fixed unlocking mechanism 100 in the previous embodiment. The structure and the advantages of the fixed unlocking mechanism 100 are described in detail in the foregoing embodiments, and are not described herein.

The above description is only of the preferred embodiments of the present utility model and is not intended to limit the present utility model, but various modifications and variations can be made to the present utility model by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (10)

1. A fixed unlocking mechanism, comprising: casing (110) and activity set up unlatch piece (120) in casing (110), unlatch piece (120) have press end (121) and drive end (122), drive end (122) with close separating brake subassembly (210) butt in casing (110), press end (121) driven to casing (110) internal motion drives drive end (122) are driven close separating brake subassembly (210) and are right close separating brake subassembly (210) are spacing in order to prevent it to reclose again.

2. The fixed unlocking mechanism according to claim 1, wherein the unlocking member (120) comprises a first unlocking arm (123) and a second unlocking arm (124) which are connected with each other, the unlocking member (120) is rotatably arranged in the housing (110), a pressing surface (1231) is arranged on a surface, away from the second unlocking arm (124), of the first unlocking arm (123), a pressing end (121) of the unlocking member (120) is arranged on the pressing surface (1231), a driving surface (1241) is arranged on a surface, away from the first unlocking arm (123), of the second unlocking arm (124), and the driving surface (1241) is in butt joint with the opening and closing assembly (210).

3. The fixed unlocking mechanism according to claim 1, further comprising a buckle (130) movably arranged in the housing (110), wherein the buckle (130) has a first end (131) capable of extending out of the housing (110) and a second end (132) in driving connection with the unlocking member (120), the first end (131) of the buckle (130) is linked with the pressing end (121) of the unlocking member (120), the first end (131) of the buckle (130) is retracted into the housing (110), and the pressing end (121) of the unlocking member (120) moves towards the housing (110).

4. A fixed unlocking mechanism according to claim 3, wherein the unlocking member (120) comprises a connecting arm (125), one of the surface of the connecting arm (125) and the second end (132) of the catch (130) being provided with a connecting post (1251), the other being provided with a waist-shaped hole (133), the connecting post (1251) extending into the waist-shaped hole (133) and sliding in the waist-shaped hole (133).

5. The fixed unlocking mechanism according to claim 1, wherein the unlocking member (120) is provided with a first limiting hole (126), the housing (110) is provided with a first limiting shaft (111) matched with the first limiting hole (126), the unlocking member (120) is sleeved on the first limiting shaft (111) through the first limiting hole (126) and rotates around the first limiting shaft (111), the first limiting hole (126) is internally provided with a first torsion spring (140) sleeved on the first limiting shaft (111), and two torsion arms of the first torsion spring (140) are respectively abutted with the housing (110) and the unlocking member (120).

6. The fixed unlocking mechanism according to claim 2, wherein the angle between the first unlocking arm (123) and the second unlocking arm (124) is an acute angle or a right angle.

7. A fixed unlocking mechanism according to claim 3, wherein the first end (131) of the buckle (130) is provided with an abutting surface (134) and an inclined surface (135), the abutting surface (134) and the inclined surface (135) are arranged at intervals along the direction that the shell (110) is inserted into the fixing seat (300), the fixing seat (300) drives the buckle (130) to retract into the shell (110) through the inclined surface (135), and after the shell (110) moves in place, the buckle (130) pops up through the inside of the shell (110), and the abutting surface (134) abuts against the shell (110).

8. A fixed unlocking mechanism according to claim 3, wherein the buckle (130) is provided with a second limiting hole (136), the shell (110) is provided with a second limiting shaft (112) matched with the second limiting hole (136), the buckle (130) is sleeved on the second limiting shaft (112) through the second limiting hole (136) and rotates around the second limiting shaft (112), the second limiting hole (136) is internally provided with a second torsion spring sleeved on the second limiting shaft (112), and two torsion arms of the second torsion spring are respectively abutted with the shell (110) and the buckle (130).

9. The fixed unlocking mechanism according to claim 1, wherein the closing and opening assembly (210) comprises a lock catch (211) and a jump buckle which are matched with each other, the driving end (122) of the unlocking piece (120) is abutted with the lock catch (211), the pressing end (121) is driven to retract into the shell (110), and the driving end (122) drives the lock catch (211) to be separated from the jump buckle, so that the closing and opening assembly (210) is unlocked and cannot be closed.

10. Circuit breaker, characterized by comprising a fixed unlocking mechanism (100) according to any of claims 1 to 9.