CN220796625U - Unlocking device and circuit breaker - Google Patents

Abstract

The application provides an unlocking device and circuit breaker relates to piezoelectricity ware technical field, and unlocking device of this application includes the release, and the release includes the contact, and the contact is used for driving the electromagnetic system of circuit breaker when the release is in the unblock state to make the circuit breaker break. The unlocking device and the circuit breaker provided by the application ensure that the circuit breaker is installed in a breaking state.

Description

Unlocking device and circuit breaker

Technical Field

The application relates to the technical field of piezoelectric devices, in particular to an unlocking device and a circuit breaker.

Background

The circuit breaker is a switching device capable of closing, bearing and switching on and off current under normal loop conditions, along with rapid development of electric power and communication technology in China, increasingly high requirements are put forward on practicality, safety and reliability of terminal electrical equipment such as the circuit breaker, a plurality of brand new designs are structurally developed, if the circuit breaker can be conveniently plugged and pulled out like a common electric plug, the circuit breaker can be conveniently installed into or pulled out of a circuit, the circuit breaker can be locked in a stable working state at an installation position, and various requirements of intellectualization on power quality, automatic control and the like can be met.

Along with the wide use of plug-in circuit breaker on various electrical equipment, in order to satisfy the installation needs of various different electrical equipment, plug-in circuit breaker's structure also develops to various, among the prior art, adopt unlocking device to realize plug-in circuit breaker and the fixed of rack, specifically, unlocking device sets up the recess on plug-in circuit breaker's shell, insert or shift out the recess realization plug-in circuit breaker and the locking and the unblock of rack through unlocking piece control closure piece, unlocking device's state is irrelevant with the circuit breaker break-make state among the prior art for the circuit breaker closes when unlocking device is not locked, the incident of taking place easily like this.

Disclosure of Invention

The purpose of this application is, to the not enough among the above-mentioned prior art, provides an unlocking device and circuit breaker, has guaranteed to install under the circuit breaker breaking state.

In order to achieve the above purpose, the technical solution adopted in the embodiment of the present application is as follows:

in an aspect of the embodiments of the present application, an unlocking device is provided, including an unlocking member, the unlocking member includes a contact portion, and the contact portion is used for driving an electromagnetic system of a circuit breaker to act when the unlocking member is in an unlocking state, so that the circuit breaker is opened.

As an implementation manner, the end of the contact part far away from the unlocking piece is a supporting surface, and when the unlocking piece is unlocked, the supporting surface moves towards the electromagnetic system of the circuit breaker and supports.

As an implementation manner, the supporting surface is an arc surface, and the arc surface supports against the electromagnetic system.

As an embodiment, one end of the unlocking element is used for a rotary connection with the housing of the circuit breaker.

As an embodiment, the unlocking element is further provided with a locking portion for extending into the cabinet to connect the housing of the circuit breaker with the cabinet.

As an implementation manner, the unlocking device further comprises a limiting plate arranged on the shell, the limiting plate comprises a first limiting surface facing the unlocking piece, and the first limiting surface is propped against the other end of the unlocking piece to limit the distance of the unlocking piece entering the shell of the circuit breaker.

As an implementation manner, the circuit breaker further comprises a limiting plate arranged on the circuit breaker shell, the limiting plate further comprises a second limiting surface, the contact part is provided with a third limiting surface, and when the unlocking piece rotates outwards, the second limiting surface abuts against the third limiting surface to limit the rotation distance of the third limiting surface.

As an implementation mode, the unlocking piece is an unlocking plate, the unlocking plate comprises a connecting end, a locking end and a pressing surface connected between the connecting end and the locking end, the connecting end is provided with a rotating shaft, and the rotating shaft is used for being connected with the shell to realize rotation of the unlocking piece.

As an embodiment, the pressing surface is a concave curved surface curved toward the inside of the case.

As an implementation manner, a reset elastic piece is arranged between the limiting plate and the unlocking piece.

As an implementation mode, the reset elastic piece is a torsion spring, two ends of the torsion spring are respectively propped against the shell and the unlocking piece, the shell is provided with a mounting column, and the torsion spring is sleeved on the mounting column.

In another aspect of the embodiments of the present application, a circuit breaker is provided, including a circuit breaker body and the above-mentioned unlocking device, the circuit breaker body includes an electromagnetic system, and the unlocking device is disposed on one side of the electromagnetic system, and is used for driving the electromagnetic system to act when the unlocking device is in a locked state.

The beneficial effects of this application include:

the application provides an unlocking device, including the unblock piece, the unblock piece includes contact portion, and contact portion is used for driving the electromagnetic system action of circuit breaker when the unblock piece is in the unblock state to make the circuit breaker break brake. When the circuit breaker is installed in the cabinet, the unlocking piece is in an unlocking state, and when the unlocking piece is in the unlocking state, the electromagnetic system of the circuit breaker is driven to act, and the circuit breaker is in a breaking state, so that when the circuit breaker is installed, the circuit breaker is in the breaking state, and the circuit breaker is ensured to be installed in the breaking state.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, 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 application and therefore should not be considered limiting the scope, and that other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is one of state diagrams of an unlocking device according to an embodiment of the present application;

FIG. 2 is a second state diagram of an unlocking device according to the embodiment of the present application;

fig. 3 is a schematic structural diagram of an unlocking member according to an embodiment of the present application;

fig. 4 is a second schematic structural diagram of an unlocking member according to an embodiment of the present disclosure;

fig. 5 is a schematic structural diagram of a housing according to an embodiment of the present disclosure;

FIG. 6 is a second schematic structural view of a housing according to the embodiment of the present disclosure;

FIG. 7 is a third state diagram of an unlocking device according to the embodiment of the present application;

fig. 8 is a third schematic structural view of a housing according to an embodiment of the present disclosure.

Icon: 10-unlocking means; 11-unlocking piece; 111-pressing surface; 112-rotation axis; 12-locking part; 13-contact; 131-an abutting surface; 132-a third limiting surface; 14-limiting pieces; 141-connecting plates; 142-limiting plates; 143-a first limiting surface; 144-a second limiting surface; 16-a rotation hole; 17-a return spring; 21-electromagnetic system.

Detailed Description

For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions of the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, which are 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 present application, as provided in the accompanying drawings, is not intended to limit the scope of the application, as claimed, but is merely representative of selected embodiments of the application. It should be noted that, in the case of no conflict, the features of the embodiments of the present application may be combined with each other, and the combined embodiments still fall within the protection scope of the present application.

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 application, 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 terms in this application will be understood by those of ordinary skill in the art in a specific context.

In an aspect of the present embodiment, there is provided an unlocking device 10, including an unlocking member 11, the unlocking member 11 including a contact portion 13, the contact portion 13 being configured to drive an electromagnetic system 21 of a circuit breaker when the unlocking member 11 is in an unlocked state, so as to open the circuit breaker.

The unlocking member 11 includes a contact portion 13, as shown in fig. 1, when the unlocking member 11 is locked, the contact portion 13 is in contact with the moving iron core of the electromagnetic system 21; as shown in fig. 2, when the unlocking member 11 is unlocked, the circuit breaker is not installed in place at this time, the contact portion 13 drives the movable iron core of the electromagnetic system to abut against the movable iron core, and the movable iron core moves rightward, so that the operating mechanism of the circuit breaker is opened, and the circuit breaker is opened. When the circuit breaker is installed in the cabinet, the unlocking piece 11 is in an unlocking state, and when the unlocking piece 11 is in the unlocking state, the electromagnetic system driving the circuit breaker acts, and the circuit breaker is in a breaking state, so that when the circuit breaker is installed, the circuit breaker is in the breaking state, and the installation of the circuit breaker in the breaking state is ensured.

The electromagnetic system 21 of the circuit breaker comprises a movable iron core, a static iron core and a push rod, the static iron core is attracted to the movable iron core to enable the movable iron core to approach the static iron core and drive the push rod to move towards an operating mechanism of the circuit breaker, so that the circuit breaker is opened.

The embodiment of the present application is not limited with respect to the specific structure of the contact portion. For example, as shown in fig. 1, the unlocking member 11 may extend toward the plunger to form a rod-like structure, or may be an end portion of the unlocking member 11. One skilled in the art can make specific settings according to the distance between the unlocking member 11 and the electromagnetic system.

The application provides an unlocking device 10, including unlatching piece 11 and contact 13, unlatching piece 11 and contact 13 fixed connection, contact 13 are used for supporting with the electromagnetic system 21 of circuit breaker when unlatching piece 11 is in the unblock state to make the circuit breaker break brake. When the circuit breaker is installed in the cabinet, the unlocking piece is in an unlocking state, and when the unlocking piece is in the unlocking state, the electromagnetic system 21 driving the circuit breaker acts, and the circuit breaker is in a breaking state, so that when the circuit breaker is installed, the circuit breaker is in the breaking state, and the installation of the circuit breaker in the breaking state is ensured.

In one implementation manner of the embodiment of the present application, as shown in fig. 1, 2, 3 and 4, the end of the contact portion 13 away from the unlocking member 11 is a supporting surface 131, when the unlocking member 11 is unlocked, the supporting surface moves towards the electromagnetic system 21 of the circuit breaker and supports, the supporting surface 131 is an arc surface, and the arc surface supports against the electromagnetic system 21.

As shown in fig. 1 and 2, when the unlocking member 11 is switched between the locked state and the unlocked state, the end portion of the contact portion 13 also moves along an arc, and the end face of the movable iron core is a plane, so that the abutting face 131 can slide on the end face of the movable iron core, and in this embodiment, the abutting face 131 is set to be an arc face, so that the abutting face 131 can slide on the end face of the movable iron core conveniently, and the abutting state can be changed when the end face of the movable iron core contacts with the end face of the movable iron core.

In one implementation manner of the embodiment of the present application, as shown in fig. 1, 2, 3 and 4, one end of the unlocking member 11 is used for being rotationally connected with a casing of the circuit breaker, one side, far away from the casing, of the other end of the unlocking member 11 is provided with a locking portion 12, and the locking portion 12 is used for extending into a cabinet to connect the casing with the cabinet.

One end of the unlocking piece 11 is used for being rotationally connected with a shell of the circuit breaker, so that the other end of the unlocking piece 11 can swing outside the shell, one side, far away from the shell, of the other end of the unlocking piece 11 is further provided with a locking portion 12, the locking portion 12 is used for extending into a cabinet to connect the shell with the cabinet, and when the other end of the unlocking piece 11 swings outside the shell, the locking portion 12 extends into the cabinet to be connected with the cabinet, so that the circuit breaker is locked with the cabinet, as shown in fig. 1. As shown in fig. 2, when the other end of the unlocking member 11 swings into the housing, the locking portion 12 is retracted into the housing, and the locking with the cabinet is released, so that the circuit breaker is unlocked from the cabinet.

According to the unlocking device 10 disclosed by the embodiment of the application, one part of the unlocking piece 11 is adopted, one end of the unlocking piece 11 is rotationally connected with the shell, and the other end swings to lock and unlock the cabinet and the circuit breaker, so that the unlocking device 10 disclosed by the application is simple in structure, few in parts and small in volume due to the locking part 12, the other end of the unlocking piece 11 is smaller in unlocking state and locking state, and the space occupied by the unlocking piece 11 is smaller. The unlocking device 10 can solve the problems of more parts and larger occupied space of the unlocking device in the prior art.

The specific structure of the locking portion 12 is not limited in this embodiment, and may be, for example, a protrusion as shown in fig. 1, where the protrusion extends into the cabinet and is connected with the cabinet.

Optionally, as shown in fig. 1, 2, 5 and 6, the unlocking device 10 further includes a limiting plate 142 disposed on the housing, where the limiting plate 142 includes a first limiting surface 143 facing the unlocking member 11, and the first limiting surface 143 abuts against the other end of the unlocking member 11 to limit a distance of the unlocking member 11 entering the housing.

As shown in fig. 2, when the swing angle of the unlocking member 11 is too large in the swing process, the depth of the unlocking member 11 extending into the circuit breaker is large, normal operation of the circuit breaker body is affected, or the rotation angle of the supporting surface 131 is too large, the unlocking member and the end face of the movable iron core slip, and normal operation of the contact portion 13 are affected.

When the limiting member 14 is disposed in the housing, the end portion of the other end of the unlocking member 11 needs to abut against the first limiting surface 143, and when the contact portion 13 is disposed, as shown in fig. 1, the contact portion 13 may have a small distance from the top end of the unlocking member 11, so that the top end of the unlocking member 11 is exposed and is used for abutting against the first limiting surface 143 to realize limiting of the unlocking member 11.

In one implementation manner of the present embodiment, as shown in fig. 1, 2, 5 and 6, the limiting plate 142 further includes a second limiting surface 144, the contact portion 13 has a third limiting surface 132, and when the unlocking member 11 rotates outwards, the second limiting surface 144 abuts against the third limiting surface 132 to limit the rotation distance of the third limiting surface 132.

As shown in fig. 2, when the swing angle of the unlocking member 11 is too large in the swing process, the unlocking member 11 extends out of the circuit breaker to be more, and connection with the cabinet is not facilitated, the limiting plate 142 of the embodiment of the application further includes a second limiting surface 144, the second limiting surface 144 is the top surface of the limiting plate 142, a third limiting surface 132 is arranged at the bottom of the contact portion 13, and the contact portion 13 swings outwards along an arc in the outward swing process of the unlocking member 11, so that the contact portion 13 gradually and outwards contacts the second limiting surface 144 of the limiting plate 142 when moving to a certain position due to a certain length of the contact portion 13, and the second limiting surface 144 blocks the third limiting surface 132 from continuing to move outwards, namely, the unlocking member 11 is limited to continue to move outwards, namely, the movement range of the unlocking member 11 is limited, so that the stability of connection between the circuit breaker and the cabinet is improved.

Alternatively, as shown in fig. 1, 3 and 5, the unlocking member 11 is an unlocking plate, and the unlocking plate includes a connection end, a locking end, and a pressing surface 111 connected between the connection end and the locking end, where the connection end is provided with a rotation shaft 112, and the rotation shaft 112 is used to connect with the housing to implement rotation of the unlocking member 11.

As shown in fig. 1 and 5, the rotation holes 16 are provided at opposite sides of the housing, the rotation shaft 112 is provided at the connection end of the unlocking plate, and the rotation shaft 112 is inserted into the rotation hole 16 and moves in the rotation hole 16 so that the unlocking plate can move around the connection end of the unlocking plate, and the locking portion 12 and the contact portion 13 are provided at the locking end, so that locking can be achieved at a small rotation angle.

Between the locking end and the connecting end is a pressing surface 111, and the pressing surface 111 is used for pressing during unlocking, so that the unlocking device 10 is unlocked.

In one implementation manner of the embodiment of the present application, as shown in fig. 1, 2, 3 and 4, the pressing surface 111 is a concave curved surface that is curved toward the inside of the housing.

When the unlocking device 10 needs to be unlocked, the pressing surface 111 is pressed, so that the unlocking piece 11 rotates around the rotating shaft 112, and when the unlocking piece 11 rotates, the locking part 12 is driven to be separated from the mounting hole of the cabinet, unlocking of the unlocking device 10 is achieved, and the pressing surface 111 is arranged to be a concave curved surface which is bent towards the inside of the shell, so that manual pressing is facilitated.

Optionally, a reset elastic member 17 is provided between the housing and the unlocking member 11.

When the locking part 12 of the unlocking piece 11 stretches into the cabinet, the unlocking piece 11 needs to be reset, when the specification of the electromagnetic system 21 is smaller, the reset force provided for the unlocking piece 11 is smaller, and is insufficient to enable the unlocking piece to reset.

In addition, in order to reduce the components of the unlocking device 10, the unlocking member 11 may be reset by using the return spring of the movable iron core, specifically, when the locking portion 12 is retracted into the housing, the movable iron core moves rightward due to the abutment of the contact portion 13, the return spring of the movable iron core is compressed to store potential energy, when the locking portion 12 is aligned with the mounting hole of the cabinet, i.e. the locking portion 12 is free, the return spring of the movable iron core releases the potential energy and pushes the movable iron core to move leftward, and then the unlocking member 11 is pushed to move leftward by the contact portion 13, so that the locking portion 12 extends out of the housing and into the mounting hole of the cabinet, and locking of the cabinet and the circuit breaker is achieved.

In one implementation manner of the embodiment of the application, the reset elastic piece 17 is a torsion spring, two ends of the torsion spring respectively support against the shell and the unlocking piece 11, a mounting column is arranged on the shell, and the torsion spring is sleeved on the mounting column.

The reset elastic piece 17 of the embodiment of the application adopts a torsion spring, a mounting column is arranged on a shell, the torsion spring is sleeved on the mounting column, and two ends of the torsion spring are respectively propped against the shell and the unlocking piece 11.

In another implementation manner of this embodiment, as shown in fig. 7 and 8, the reset elastic member is a spring, the spring is disposed between the housing and the unlocking member 11, when the unlocking device approaches the cabinet, the locking portion 12 moves inward, compresses the spring, so that the spring accumulates potential energy, when the locking portion 12 aligns with the mounting hole of the cabinet, the locking portion 12 is in a free state at this time, the spring releases the potential energy, and pushes the locking portion 12 to extend into the mounting hole of the cabinet, so as to realize the reset of the unlocking member 11.

The embodiment of the application also discloses a circuit breaker, including circuit breaker body and above-mentioned unlocking device 10, the circuit breaker body includes electromagnetic system 21, and unlocking device 10 sets up in one side of electromagnetic system 21 for the action of driving electromagnetic system 21 when unlocking device 10 is in the closure state. The circuit breaker includes the same structure and advantageous effects as the unlocking device 10 in the previous embodiment. The structure and advantages of the unlocking device 10 have been described in detail in the foregoing embodiments, and will not be described in detail herein.

The foregoing description is only of the preferred embodiments of the present application and is not intended to limit the same, but rather, various modifications and variations may be made by those skilled in the art. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application should be included in the protection scope of the present application.

Claims (10)

1. An unlocking device is characterized by comprising an unlocking piece (11), wherein the unlocking piece (11) comprises a contact part (13) used for driving an electromagnetic system (21) of a circuit breaker to act when the unlocking piece (11) is in an unlocking state so as to break the circuit breaker.

2. Unlocking device according to claim 1, characterized in that the end of the contact part (13) remote from the unlocking element (11) is a contact surface (131), the contact surface (131) moving towards and contacting the electromagnetic system of the circuit breaker when the unlocking element (11) is unlocked.

3. Unlocking device according to claim 2, wherein the abutment surface (131) is a cambered surface, which abuts against the electromagnetic system (21).

4. Unlocking device according to claim 1, characterized in that one end of the unlocking element (11) is intended for a rotational connection with the housing of the circuit breaker.

5. Unlocking device according to claim 1, characterized in that the unlocking piece (11) is further provided with a locking portion (12), which locking portion (12) is intended to extend into a cabinet for connecting the housing of the circuit breaker with the cabinet.

6. The unlocking device according to claim 1, further comprising a limiting plate (142) arranged on the housing of the circuit breaker, wherein the limiting plate (142) comprises a first limiting surface (143) facing the unlocking member (11), and the first limiting surface (143) abuts against the unlocking member (11) to limit the distance of the unlocking member (11) entering the housing of the circuit breaker.

7. The unlocking device according to claim 1, further comprising a limiting plate (142) disposed on a housing of the circuit breaker, wherein the limiting plate (142) includes a second limiting surface (144), the contact portion (13) has a third limiting surface (132), and when the unlocking member (11) rotates, the second limiting surface (144) abuts against the third limiting surface (132) to limit a rotation distance of the third limiting surface (132).

8. Unlocking device according to claim 1, wherein the unlocking member (11) is an unlocking plate comprising a connecting end, a locking end and a pressing surface (111) connected between the connecting end and the locking end, the connecting end being provided with a rotation shaft (112), the rotation shaft (112) being adapted to be connected with a housing for effecting a rotation of the unlocking member (11).

9. Unlocking device according to claim 8, wherein the pressing surface (111) is a concave curved surface curved inwards towards the housing.

10. Circuit breaker characterized by comprising a circuit breaker body and an unlocking device (10) according to any of claims 1 to 9, said circuit breaker body comprising an electromagnetic system (21), said unlocking device (10) being arranged on one side of said electromagnetic system (21) for driving the electromagnetic system (21) in motion when said unlocking device (10) is in a locked state.