CN218385070U - Plug-in circuit breaker - Google Patents

Abstract

A plug-in circuit breaker comprises a circuit breaker shell and a locking mechanism arranged in the circuit breaker shell, wherein a handle mechanism is rotatably arranged and connected with an operating mechanism and used for driving the circuit breaker to open and close, and an unlocking part is arranged on the handle mechanism; handle mechanism can rotate closing position, separating brake position and unblock position, separating brake position is located between closing position and the unblock position, when handle mechanism rotates closing position, the switching-on of drive circuit breaker, when rotating separating brake position from closing position, the separating brake of drive circuit breaker, when rotating unblock position from separating brake position, the unblock of handle mechanism's unblock portion drive locking mechanical system unblock, remove the locking cooperation of locking mechanical system and rack through handle mechanism, simple structure and with low costs, the circuit breaker is in the separating brake state when guaranteeing to drive locking mechanical system unblock moreover, improves the power consumption safety.

Description

Plug-in circuit breaker

Technical Field

The invention relates to the field of low-voltage electric appliances, in particular to a plug-in circuit breaker.

Background

Along with the development of communication technology, the communication cabinet further provides requirements for the height direction and the installation mode of the circuit breaker, the power distribution space of the equipment is further compressed, the circuit breaker with the size and the height of 1U and the plug-in installation mode conform to the trend, but most of the existing plug-in circuit breakers with the size of 1U are difficult to take out and operate after being installed in the cabinet. The plug-in circuit breakers of this type are inserted in the cabinet side by side, and since the height and width of the circuit breakers exposed out of the operating surface of the cabinet are about 4cm and 2cm respectively (certainly, the circuit breakers can be thicker or thinner), the circuit breakers are inconvenient to pull out, and the locking mechanism of the circuit breakers needs to be unlocked to be matched with the cabinet in a locking mode when the circuit breakers are pulled out.

The prior plug-in circuit breaker adopting a handle as a switching-on and switching-off operation part usually needs to be provided with an independent unlocking mechanism on a circuit breaker shell, and has high cost.

In addition, the plug-in circuit breaker adopting the handle as the switching-on and switching-off operation part can be provided with an independent drawing mechanism so as to apply drawing acting force or be connected with an external drawing device, and the drawing mechanism also needs to consider releasing the locking mechanism, so that the cost is high and the structure is complex. In addition, the independent drawing mechanism cannot ensure the on-off state of the breaker at the moment, and if the drawing mechanism is used for drawing operation in the on-off state, the problem of electricity utilization safety exists.

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provides a plug-in circuit breaker.

In order to achieve the purpose, the invention adopts the following technical scheme:

a plug-in circuit breaker comprises a circuit breaker shell and a locking mechanism arranged in the circuit breaker shell, wherein a handle mechanism is rotatably arranged and connected with an operating mechanism and used for driving the circuit breaker to open and close, and an unlocking part is arranged on the handle mechanism; handle mechanism can rotate closing position, separating brake position and unblock position, separating brake position is located between closing brake position and the unblock position, when handle mechanism rotates closing brake position, the drive circuit breaker combined floodgate, when rotating separating brake position from closing brake position, the drive circuit breaker separating brake, when rotating unblock position from separating brake position, the unblock portion drive locking mechanical system unblock of handle mechanism.

Preferably, the handle mechanism is provided with a drawing connecting part; the pulling device can be connected with the pulling connecting part, and the pulling force of the pulling device can drive the handle mechanism to rotate to the unlocking position from the opening position, so that the unlocking part drives the locking mechanism to unlock, and meanwhile, the plug-in circuit breaker is pulled out of the cabinet.

Preferably, be equipped with on the circuit breaker casing and shelter from the structure, when handle mechanism rotated the on-off position, shelter from the structure and shelter from drawing connecting portion, make draw-off gear can not be connected with drawing connecting portion, when handle mechanism rotated the branch floodgate position, shelter from the structure and dodge and draw connecting portion.

Preferably, when the handle mechanism rotates to the switching-on position, the pulling connecting part rotates into the shell of the circuit breaker, and when the handle mechanism rotates to the switching-off position, the pulling connecting part rotates out of the shell of the circuit breaker.

Preferably, the handle mechanism is provided with a first unlocking limiting structure, the circuit breaker shell is provided with a second drawing connecting part, when the handle mechanism rotates to the unlocking position from the opening position, the first unlocking limiting structure corresponds to the second drawing connecting part, and the drawing device can be connected with the second drawing connecting part and the first unlocking limiting structure to lock the handle mechanism at the unlocking position.

Preferably, when the handle mechanism rotates to the opening position and/or the closing position, the second drawing connecting part is staggered with the first unlocking limiting structure.

Preferably, the handle mechanism is provided with a first unlocking limiting structure, the plug-in circuit breaker further comprises a second unlocking limiting structure, and when the handle mechanism rotates to the unlocking position, the second unlocking limiting structure limits and locks the first unlocking limiting structure, so that the handle mechanism is locked at the unlocking position; and a third drawing connecting part is arranged on the breaker shell or the handle mechanism and is used for being connected with a drawing device.

Preferably, handle mechanism includes handle spare, handle spare includes handle axis of rotation and the operating handle who radially is connected with handle axis of rotation, and handle spare passes through the handle axis of rotation and rotates and install in the circuit breaker casing, the unblock boss of part for setting up at the handle axis of rotation.

Preferably, handle mechanism includes handle spare, handle spare include the handle axis of rotation and with the radial operation handle of being connected of handle axis of rotation, handle spare passes through the handle axis of rotation and rotates and install in the circuit breaker casing, draw connecting portion for setting up draw the hole in the handle axis of rotation, draw the eccentric setting of center of rotation of hole and handle axis of rotation.

Preferably, the radial direction of the handle rotating shaft is provided with a drawing assembly groove communicated with the drawing hole, and a driving convex rod of the drawing device extends into the drawing assembly groove and is inserted into the drawing hole to be connected with the handle piece.

Preferably, handle mechanism includes handle spare, first unblock limit structure is spacing groove or spacing hole of setting on handle spare, the second is drawn connecting portion and is drawn the hole for the second that sets up on the circuit breaker casing.

Preferably, the drawing device comprises a drawing piece, and the drawing piece is provided with a driving convex rod.

Preferably, the drawing piece comprises an operating rod and two connecting rods, one ends of the two connecting rods are respectively connected with the operating rod, and the other end parts of the two connecting rods are bent towards one side away from each other to form a driving convex rod, or the other end parts of the two connecting rods are bent towards one side close to each other to form a driving convex rod.

Preferably, two connecting rods extend out of the drawing piece, the end parts of the two connecting rods are bent to form driving convex rods, and operation holes are formed in the drawing piece.

Preferably, locking mechanical system includes the locking piece, be equipped with the locking arch on the locking piece, elastic component drive locking piece removes to make the locking arch stretch out outside the circuit breaker casing, handle mechanism rotates when the unblock position, and the drive locking piece of unblock portion removes, makes the protruding withdrawal of locking circuit breaker casing in, realizes the locking mechanical system unblock.

Preferably, locking mechanical system still includes the deblocking piece, and deblocking piece one end is used for driving the locking piece, and the deblocking piece other end is located the rotation route of deblocking piece, when handle mechanism rotated the unblock position, the unblock piece passed through deblocking piece drive locking piece, made the protruding withdrawal of locking in the circuit breaker casing.

Preferably, locking piece rectilinear sliding or rotation are installed in the circuit breaker casing, and the deblocking piece rotates and installs in the circuit breaker casing, and perhaps the deblocking portion can drive the deblocking piece and rotate around the first arch in the circuit breaker casing, and perhaps the deblocking portion can drive the rotation arch or rotate the kink on the deblocking piece.

Preferably, the circuit breaker casing includes relative operating surface and the rear end face that sets up, relative last lateral wall and the lower lateral wall that sets up to and two lateral walls that set up relatively, be equipped with handle swing hole on the operating surface, be equipped with binding post on the rear end face upward be equipped with the locking hole on lateral wall and/or the lower lateral wall, locking mechanical system is including can stretching out the circuit breaker casing outside and retracting the locking arch in the circuit breaker casing, the locking arch stretches out from the locking hole.

According to the plug-in circuit breaker, the unlocking part is arranged on the handle mechanism, the handle mechanism can be further rotated to the unlocking position in the direction away from the switching-on position after being rotated to the switching-off position, the locking matching between the locking mechanism and the cabinet is released through the handle mechanism, the structure is simple, the cost is low, the circuit breaker can be in the switching-off state when the locking mechanism is driven to unlock, and the electricity utilization safety is improved.

In addition, in a preferred embodiment, the handle mechanism is provided with the drawing connecting part, an independent drawing mechanism is not required to be arranged, the unlocking and the connection with the drawing device are realized through the existing handle mechanism, the structure is simple, the cost is low, the drawing connecting part is used for being connected with the drawing device, the drawing force of the drawing device can drive the handle mechanism to rotate to the unlocking position from the opening position, the handle mechanism drives the locking mechanism to unlock, meanwhile, the plug-in circuit breaker is pulled out of the cabinet, and the operation is simple and convenient.

Particularly, when the handle mechanism rotates to the switching-on position, the drawing device cannot be connected with the drawing connecting part, and only when the handle mechanism rotates to the switching-off position, the drawing device can be connected with the drawing connecting part, so that the circuit breaker can be pulled out only when the circuit breaker is in the switching-off state, the electricity utilization safety is ensured, and the electric shock risk is avoided.

In addition, in another preferred embodiment, when the handle mechanism rotates from the opening position to the unlocking position, the pulling device can lock the handle mechanism at the unlocking position, and the pulling force of the pulling device can pull the plug-in circuit breaker out of the cabinet. Particularly, when the handle mechanism rotates to the opening position and/or the closing position, the pulling device cannot be connected with the circuit breaker, so that the electricity utilization safety is ensured, and the electric shock risk is avoided.

Drawings

Fig. 1 is a schematic structural view of a handle mechanism and a locking mechanism in a circuit breaker housing according to a first embodiment, wherein the handle mechanism is in a tripping position;

FIG. 2 is a schematic structural view of a handle mechanism according to the first embodiment;

fig. 3 is an exploded view of the plug-in circuit breaker and the drawing device of the first embodiment, when the handle mechanism is in the opening position;

fig. 4 is a schematic structural view of the plug-in type circuit breaker of the first embodiment after being assembled with a drawing device;

fig. 5 is a schematic structural view of the handle mechanism and the locking mechanism in the circuit breaker case according to the second embodiment, in which the handle mechanism is in the opening position;

fig. 6 is a schematic structural view of the handle mechanism and the locking mechanism in the circuit breaker case according to the second embodiment, in which the handle mechanism is in the unlocked position;

fig. 7 is a schematic structural view of the second embodiment of the plug-in type circuit breaker after being assembled with a drawing device;

fig. 8 is an exploded view of the plug-in circuit breaker and the drawing device of the second embodiment;

fig. 9 is an exploded view of a plug-in type circuit breaker and a drawing device of the third embodiment;

fig. 10 is a schematic structural view of the third embodiment of the plug-in type circuit breaker after being assembled with a drawing device;

fig. 11 is a schematic structural view of the fourth embodiment of the plug-in type circuit breaker after being assembled with a drawing device;

FIG. 12 is a schematic view of the drawing apparatus according to the fourth embodiment.

Detailed Description

The following description will further describe the embodiments of the plug-in circuit breaker according to the present invention with reference to the embodiments shown in the drawings. The inventive plug-in circuit breaker is not limited to the description of the following embodiments.

Embodiment one as shown in fig. 1-4

As shown in fig. 3-4, a plug-in circuit breaker includes a circuit breaker housing 4, and an operating mechanism, a moving contact, a stationary contact, a protection mechanism, a locking mechanism 2, and other components disposed in the circuit breaker housing 4. The circuit breaker housing 4 is a cuboid structure including an operating surface and a rear end surface which are oppositely arranged, an upper side wall and a lower side wall which are oppositely arranged, and two side walls which are oppositely arranged, wherein the two side walls, the upper side wall and the lower side wall are connected between the operating surface and the rear end surface. The operating surface is provided with an operating part for driving the circuit breaker to open and close, the operating part can be a handle mechanism 1 or a button mechanism, the operating part is connected with the operating mechanism, the moving contact is connected with the operating mechanism, the operating part drives the circuit breaker to open and close through the operating mechanism, the rear end surface is provided with a wiring terminal 44 for being in plug-in fit with a bus bar in the cabinet, the operating surface can also be provided with an indicating window for indicating the opening and closing state of the circuit breaker, the operating surface can be provided with the wiring terminal 44 or not provided with the wiring terminal 44, the plug-in circuit breaker is inserted into the cabinet, and only the operating surface is basically exposed out of the cabinet; go up and be equipped with locking hole 42 on lateral wall and/or the lower lateral wall, locking mechanical system 2 is including can stretching out the outside and the locking arch 21 of withdrawal in the circuit breaker casing 4 of circuit breaker casing 4, locking arch 21 stretches out from locking hole 42 and is used for with the spacing cooperation of rack, with the spacing locking of plug-in circuit breaker in the rack, is the locking state of locking mechanical system 2 this moment, and when locking arch 21 withdrawed in circuit breaker casing 4 from locking hole 42, can follow the rack with plug-in circuit breaker and extract, is the unlocking state of locking mechanical system this moment. Usually, the direction of the operation surface towards the rear end surface is the length direction of the circuit breaker, the direction of the upper side wall towards the lower side wall is the height direction of the circuit breaker, and the direction between the two side walls is the width direction of the circuit breaker, which is the prior art and is not described again.

The operating part created by the invention is a handle mechanism 1, as shown in fig. 3-4, a handle swing hole 41 is arranged on the operating surface of a breaker shell 4, the handle mechanism 1 is rotatably installed in the breaker shell 4 and is connected with an operating mechanism through a connecting rod 14, and the operating end of the handle mechanism 1 extends out of the breaker shell 4 from the handle swing hole 41 and is used for switching on and off; a terminal 44 is provided on a rear end surface opposite to the operation surface, a lock hole 42 is provided on an upper side wall of the circuit breaker case 4, and the lock projection 21 of the lock mechanism 2 protrudes from the lock hole 42. An improvement point of this application lies in, be equipped with the unblock portion 12 that is used for driving 2 unblocks of locking mechanical system on the handle mechanism 1, handle mechanism 1 can rotate closing position, separating brake position and unblock position, separating brake position is located between closing brake position and the unblock position, when handle mechanism 1 rotates closing brake position, closes a floodgate through operating device drive circuit breaker, when rotating separating brake position to the separating brake direction from closing brake position, through operating device drive circuit breaker separating brake, when rotating unlocking position from separating brake position, unblock portion 12 drive locking mechanical system 2 unblocks, drive the protruding 21 withdrawal circuit breaker casing 4 of locking mechanical system 2 promptly.

The plug-in circuit breaker of this embodiment is equipped with unlocking portion 12 on handle mechanism 1, and handle mechanism 1 can also continue to rotate to the unblock position to the direction of keeping away from the combined floodgate position after rotating the separating brake position, removes the locking cooperation of locking mechanical system 2 and rack through handle mechanism 1, and simple structure and with low costs can ensure that the circuit breaker is in the separating brake state when driving locking mechanical system 2 unblock moreover, improves the power consumption safety.

Preferably, as shown in fig. 1-2, the handle mechanism 1 of the present embodiment is further provided with a pulling connection part 11; when the handle mechanism 1 rotates to the opening position from the closing position, the circuit breaker is driven to be opened, the drawing device 3 can be connected with the drawing connecting part 11, the drawing force of the drawing device 3 can drive the handle mechanism 1 to rotate to the unlocking position from the opening position, the unlocking part 12 drives the locking mechanism 2 to be unlocked, and the plug-in circuit breaker is simultaneously pulled out from the cabinet

The plug-in circuit breaker of this embodiment, be equipped with unlocking part 12 and draw connecting portion 11 on the handle mechanism 1, need not to set up solitary drawing mechanism, realize the unblock and be connected with drawing device 3 through current handle mechanism 1, moreover, the steam generator is simple in structure and with low costs, draw connecting portion 11 and be used for being connected with drawing device 3, drawing device 3's pulling force can drive handle mechanism 1 and rotate the unblock position from the separating brake position, make the 2 unblocks of handle mechanism 1 drive locking mechanism, extract plug-in circuit breaker from the rack simultaneously, and easy operation is convenient.

Specifically, as shown in fig. 1, the locking mechanism 2 of the present embodiment includes a locking member 20, the locking member 20 is rotatably or slidably mounted in the circuit breaker housing 4, a locking protrusion 21 is disposed on the locking member 20, and an elastic member 25 drives the locking member 20 to move so that the locking protrusion 21 extends out of the circuit breaker housing 4.

As shown in fig. 1-2, the handle mechanism 1 includes a handle member 10, the handle member 10 includes a handle rotation shaft 15 and an operating knob 16 radially connected to the handle rotation shaft 15, the handle member 10 is rotatably mounted in the circuit breaker housing 4 through the handle rotation shaft 15, and the operating knob 16 protrudes from the handle swing hole 41. Set up in the circuit breaker casing 4 of this embodiment and rotate the groove, handle axis of rotation 15 rotates and installs at rotating the inslot, as another embodiment, also can set up the axis of rotation in circuit breaker casing 4, sets up the rotation hole on the handle axis of rotation 15, and the cover is established and is rotated in the axis of rotation.

The handle member 10 is provided with an unlocking portion 12 for driving the locking mechanism 2 to unlock and a pulling connecting portion 11 for connecting with the pulling device 3, the unlocking portion 12 of the embodiment is an unlocking boss arranged on the handle member 10, and the pulling connecting portion 11 is a pulling hole arranged on the handle member 10. Specifically, handle piece 10 includes handle axis of rotation 15 and the operating handle 16 with handle axis of rotation 15 radial connection, the radial arch of handle axis of rotation 15 is equipped with the unblock boss as unblock portion 12, be provided with in the axial of handle axis of rotation 15 and draw the hole as drawing connecting portion 11, draw the eccentric setting of center of rotation of hole and handle axis of rotation 15. The axial direction of the handle rotating shaft 15 is also provided with a connecting hole 101, the connecting rod 14 is hinged with the handle piece 10 through the connecting hole 101, and the rotation of the handle piece 10 drives the operating mechanism to act through the connecting rod 14, so that the switching-on and switching-off of the circuit breaker are realized.

The difference between this embodiment and the prior art lies in that handle member 10 not only can rotate to the on-off position, the separating brake position, can also rotate the unblock position, when handle member 10 rotated the on-off position, close a floodgate through operating device drive circuit breaker, when rotating the separating brake position, drive circuit breaker separating brake through operating device, this is prior art and no longer gives details, handle member 10 of this embodiment can also continue to rotate to the direction of keeping away from the on-off position when rotating the separating brake position, drive locking mechanical system 2 unblock through unblock portion 12, drive locking mechanism 2's locking protrusion 21 promptly and retract in circuit breaker housing 4. As shown in fig. 1, when the circuit breaker is in an open state, the pulling hole is located in the upper half area of the rotation center of the handle member 10, and at this time, a pulling force in the horizontal direction as shown by an arrow is applied to the circuit breaker, so that the handle member 10 can be driven to continue to rotate clockwise to the unlocking position, when the handle member 10 rotates from the open position to the unlocking position, the unlocking boss serving as the unlocking portion 12 drives the locking member 20 to overcome the acting force of the elastic member 25, the locking member 20 is driven to move, so that the locking protrusion 21 retracts into the circuit breaker housing 4, and at the same time, the plug-in circuit breaker can be pulled out from the cabinet by the pulling force. The pulling force of this embodiment realizes locking mechanism's unblock and the pulling out of circuit breaker simultaneously, convenient operation. Of course, the unlocking part 12 can directly or indirectly actuate the unlocking of the locking mechanism 2.

Preferably, as shown in fig. 2, a drawing fitting groove 111 is further provided in a radial direction of the handle rotation shaft 15, the drawing fitting groove 111 communicates with a drawing hole, and the drawing device 3 is fitted into the drawing fitting groove 111 and connected to the drawing hole.

As shown in fig. 3-4, the drawing device 3 is an external drawing device 3, the drawing device 3 includes a drawing member 30, the drawing member 30 is provided with a driving protruding rod 31 inserted into the drawing hole, the driving protruding rod 31 extends into the drawing assembly groove 111, and is inserted into the drawing hole and connected with the handle member 10, and a drawing force is applied through the drawing member 30, and the drawing force can drive the handle member 10 to rotate from the opening position to the unlocking position, so that the unlocking part 12 drives the locking mechanism 2 to unlock, and at the same time, the plug-in circuit breaker is pulled out from the cabinet.

Preferably, the drawing member 30 includes an operating rod 33 and two connecting rods 32, one ends of the two connecting rods 32 are respectively connected with the operating rod 33 to form a U-shaped structure, the other ends of the two connecting rods 32 are bent towards the side away from each other to form driving protruding rods 31, and the two driving protruding rods 31 are respectively connected with the two drawing holes on the two sides of the drawing assembly groove 111. Of course, as a deteriorated embodiment, only one drawing hole and one driving lug 31 may be provided, so that the applied drawing force is not well balanced and the reliability is poor.

Preferably, the connecting rod 32 has a certain elasticity so as to be deformed and inserted into the drawing assembly groove 111, and the deformation is reset to reliably connect the driving protruding rod 31 with the drawing hole. In addition, the operating rod 33 of the present embodiment is a straight rod-shaped structure, and can be bent into a V-shape or an arc shape as required, and the pulling member 30 can further be provided with a handle, a pull ring, or a drag hook, etc. connected to the operating rod 33 for easy operation, or can be pulled by hooking the operating rod 33 through an additional pulling device.

Preferably, the circuit breaker housing 4 is provided with a shielding structure, when the handle mechanism 1 rotates to the switching-on position, the shielding structure shields the drawing connection part 11, so that the drawing device 3 cannot be connected with the drawing connection part 11, and when the handle mechanism 1 rotates to the switching-off position, the shielding structure shields the drawing connection part 11, so that the drawing device 3 can be connected with the drawing connection part 11; make handle mechanism 1 only when rotating the separating brake position, draw-off gear 3 could be connected with drawing connecting portion 11, ensure that only the circuit breaker is in the separating brake state and could extract the circuit breaker, ensure the power consumption safety, avoid the risk of electrocution.

In this embodiment, the shielding structure is an operation surface, when the handle mechanism 1 rotates to the closing position, the drawing connection portion 11 rotates into the circuit breaker housing 4, the operation surface shields the drawing connection portion 11, so that the drawing device 3 cannot be connected with the drawing connection portion 11, when the handle mechanism 1 rotates to the opening position, the drawing connection portion 11 rotates outside the circuit breaker housing 4, that is, rotates to a position corresponding to the handle swing hole 41, and is exposed from the handle swing hole 41, so that the driving convex rod 31 of the drawing member 30 can be inserted into the drawing hole.

In another embodiment, the handle member 10 may not be provided with the pull-fit groove 111, and the driving protrusion 31 of the pull member 30 of the pull mechanism 3 may be inserted into the pull hole from the outside of both axial ends of the handle rotation shaft 15. The drawing member 30 includes an operating rod 33 and two connecting rods 32, one end of each of the two connecting rods 32 is connected to the operating rod 33, and the other end of each of the two connecting rods 32 is bent toward the side close to each other to form a driving protrusion rod 31 (refer to the drawing member 30 of fig. 9). Referring to fig. 3 to 4, the handle insulation portion 43 covering a part of the handle rotation shaft 15 is provided on the side wall of the circuit breaker housing 4 in an arc-shaped protrusion, and a part of the handle rotation shaft 15 can be exposed by not providing the handle insulation portion 43, when the handle mechanism 1 is rotated to the opening position, the drawing hole as the drawing connection portion 11 is rotated to the outside of the circuit breaker housing 4, and the driving protrusion 31 of the drawing member 30 can be inserted into the drawing hole from the outside of both axial ends of the handle rotation shaft 15. The shielding structure of the embodiment is the side wall of the breaker shell 4, when the handle mechanism 1 rotates to the switching-on position, the drawing hole rotates into the breaker shell 4, and the side wall of the breaker shell 4 shields the drawing hole. As another embodiment, the handle insulating portion 43 may be further provided, an arc-shaped hole is formed in the handle insulating portion 43, the arc-shaped hole corresponds to a rotation trajectory of the pulling hole serving as the pulling connection portion 11 from the opening position to the unlocking position, and the shielding structure of this embodiment is the handle insulating portion 43 of the circuit breaker housing 4.

The locking mechanism 2 comprises a locking piece 20 provided with a locking protrusion 21, the locking piece 20 can be linearly moved or rotatably installed in the circuit breaker shell 4, and the handle mechanism 1 can directly or indirectly drive the locking piece 20 through the unlocking part 12 to enable the locking protrusion 21 to retract into the circuit breaker shell 4.

In the embodiment shown in fig. 1, the locking member 20 is linearly slidably disposed in the circuit breaker housing 4, the elastic member 25 drives the locking member 20 to linearly slide so that the locking protrusion 21 protrudes out of the circuit breaker housing 4, and the sliding direction of the locking member 20 is perpendicular to the insertion direction of the circuit breaker into the cabinet. Locking mechanical system 2 still includes unblock piece 22, and unblock piece 22 one end is used for driving locking piece 20, and the unblock piece 22 other end is located the route of turning round of unblock portion 12, when handle mechanism 1 rotated the unblock position, unblock portion 12 drives locking piece 20 through unblock piece 22, makes locking arch 21 retract in circuit breaker housing 4. The first end of the unlocking member 22 of this embodiment is hinged to the locking member 20, the second end 221 of the other end extends toward the handle member 10 to be engaged with the unlocking portion 12, and is located on the rotation path of the unlocking portion 12, when the handle member 10 rotates counterclockwise from the open position to the closed position, the unlocking portion 12 rotates away from the second end 221 of the unlocking member 22, when the handle member 10 rotates clockwise from the closed position to the open position, the unlocking portion 12 abuts against or approaches the second end 221 of the unlocking member 22, when the handle member 10 continues to rotate clockwise from the open position to the unlocked position, the unlocking boss as the unlocking portion 12 drives the second end 221 of the unlocking member 22 to lift upward, so that the unlocking member 22 rotates around the first protrusion 23 in the circuit breaker housing 4, the locking member 20 is pressed down by the first end, so that the locking protrusion 21 retracts into the circuit breaker housing 4, and at this time, the plug-in circuit breaker continues to be pulled out of the cabinet by the pulling member 30. After the pulling force of the pulling member 30 is removed, the handle member 10 can be returned to the open position by the handle return spring, and the elastic member 25 drives the locking member 20 to return and the locking protrusion 21 extends out of the circuit breaker housing 4. The elastic member 25 may be a compression spring, a torsion spring, a leaf spring, or other various elastic members. A second protrusion 24 is also provided in the circuit breaker housing 4 for positioning an initial position of the second end 221 of the unlocking member 22. Obviously, the unlocking piece 22 can also be installed in the circuit breaker housing 4 in the middle part of the circuit breaker housing 4 in a direct rotating manner, the first end of the unlocking piece 22 can also be only in contact with the locking piece 20 or be arranged relatively, in addition, the middle part of the unlocking piece 22 can also be provided with a rotating protrusion or a bending portion to form a rotating bending portion, instead of the first protrusion 23, the rotating protrusion or the rotating bending portion is abutted to the circuit breaker housing 4 as a rotating fulcrum of the unlocking piece 22, and the unlocking portion 12 can drive the unlocking piece 22 to rotate around the rotating protrusion or the rotating bending portion on the unlocking piece 22.

Another embodiment of the locking mechanism 2 is that the locking mechanism 2 includes a locking member 20, the middle of the locking member 20 is rotatably installed in the circuit breaker housing 4, the upper side of one end of the locking member is provided with a locking protrusion 21 in a protruding manner, the other end of the locking member is provided with an unlocking arm in a protruding manner, when the handle member 10 rotates from the opening position to the unlocking position, the unlocking arm is driven by an unlocking boss as the unlocking portion 12 to lift up, so that the locking member 20 rotates and the locking protrusion 21 retracts into the circuit breaker housing 4, when the handle member 10 rotates to the opening position and the closing position, the unlocking portion 12 avoids the unlocking arm, and the elastic member 25 drives the locking member 20 to rotate and the locking protrusion 21 extends out of the circuit breaker housing 4.

Another embodiment of locking mechanical system 2 does, locking mechanical system 2 includes locking piece 20, locking piece 20 one end is rotated and is installed in circuit breaker housing 4, and the other end upside is protruding to be equipped with locking protrusion 21, locking mechanical system 2 still includes unlocking piece 22, and unlocking piece 22 rotates the installation and first end and locking piece 20 is equipped with the one end cooperation of locking protrusion 21, and the second end 221 of the other end extends to handle 10 and cooperates with unblock portion 12, and when handle 10 rotated to the unblock position from the separating brake position, as the second end 221 lifting of the unblock boss drive unlocking piece 22 of unlocking piece 12, the first end of unlocking piece 22 pushes down locking piece 20, makes locking piece 20 rotate and lock in the protruding 21 withdrawal circuit breaker housing 4, when handle 10 rotated separating brake position and closing brake position, second end 221 of unlocking piece 22 is dodged to unblock portion 12, and elastic component 25 drive locking piece 20 rotates and locking protrusion 21 stretches out outside circuit breaker housing 4.

Embodiment two as shown in fig. 5-8

The locking mechanism 2 of the second embodiment is the same as the first embodiment, the handle mechanism 1 is basically the same as the first embodiment, the unlocking portion 12 is arranged on the handle mechanism 1, the unlocking portion 12 is an unlocking boss, the handle mechanism 1 can rotate to a switching-on position, a switching-off position and an unlocking position, the switching-off position is located between the switching-on position and the unlocking position, the handle mechanism 1 drives the circuit breaker to be switched on when rotating to the switching-on position, the circuit breaker is driven to be switched off when rotating to the switching-off position from the switching-on position, and the unlocking portion 12 of the handle mechanism 1 drives the locking mechanism 2 to be unlocked when rotating to the unlocking position from the switching-off position, so that the locking protrusion 21 of the locking mechanism 2 retracts into the circuit breaker shell 4, and the operation is not repeated here.

This embodiment two lies in with embodiment one difference, be equipped with first unblock limit structure 17 on handle mechanism 1, be equipped with the second on the circuit breaker casing 4 and draw connecting portion 47, when handle mechanism 1 rotated unlocking position from the separating brake position, first unblock limit structure 17 drawed connecting portion 47 with the second and corresponds, and draw gear 3 can draw connecting portion 47 and first unblock limit structure 17 with the second and be connected, with the locking of handle mechanism 1 in unlocking position, and draw gear 3's pull-out power can be extracted plug-in circuit breaker from the rack. Handle mechanism 1 rotates when opening the floodgate position and/or closing the floodgate position, connecting portion 47 and first unblock limit structure 17 dislocation are drawn to the second, and draw gear 3 can not be drawn connecting portion 47 and first unblock limit structure 17 with the second this moment and be connected, ensures the power consumption safety, avoids electrocution risk.

Specifically, as shown in fig. 5 to 6, the handle mechanism 1 includes a handle member 10, the first unlocking limiting structure 17 is a limiting groove disposed on the handle member 10, the second drawing connection portion 47 is a second drawing hole disposed on the circuit breaker housing 4, as shown in fig. 5, when the handle member 10 rotates to the opening position, the second drawing hole is misaligned with the limiting groove, and the driving protruding rod 31 of the drawing member 30 cannot be inserted into the second drawing hole, as shown in fig. 6, when the handle member 10 is manually operated to rotate to the unlocking position, the unlocking portion 12 of the handle member 10 drives the locking member 20, so that the locking protrusion 21 retracts into the circuit breaker housing 4, and at this time, the second drawing hole corresponds to the second drawing hole, the driving protruding rod 31 of the drawing member 30 can be inserted into the second drawing hole and the limiting groove, the driving protruding rod 31 limits the handle member 10 to reset and rotate back to the opening position, so as to lock the handle mechanism 1 at the opening position, at this time, a pulling force is applied through the handle member 30, so that the circuit breaker can be pulled out from the cabinet.

As shown in fig. 7-8, the drawing device 3 of the present embodiment is the same as the first embodiment, the drawing member 30 includes an operating rod 33 and two connecting rods 32, one end of each of the two connecting rods 32 is connected to the operating rod 33 to form a U-shaped structure, the other end of each of the two connecting rods 32 is bent towards the side away from the other end to form a driving protruding rod 31, a limiting groove serving as a first unlocking limiting structure 17 is disposed on the handle rotating shaft 15, a second drawing hole is disposed on the handle insulating portion 43, the limiting groove penetrates through the axial direction of the handle rotating shaft 15 of the whole handle member 10, and when the handle member 10 rotates to the unlocking position, the two driving protruding rods 31 of the drawing member 30 extend into the limiting groove and then are inserted into the second drawing hole towards the outside. Of course, the first unlocking limiting structure 17 may also be a limiting hole, and an assembly scheme in which the drawing assembly groove 111 and the limiting hole are communicated in the first embodiment is adopted.

In addition, the first unlocking limiting structure 17 and the second pulling and connecting part 47 can be used for installing the pulling device 3 and a handle locking mechanism for locking the handle mechanism 1 at an unlocking position, so that switching-on or switching-off operation cannot be performed. An example of a handle locking mechanism is one that includes a locking shaft that passes through the first unlocking limit structure 17 and the second pulling connection 47 to lock the handle member 10 in the unlocked position so that the closing or opening operation cannot be performed at will. Preferably, at least one end of the locking shaft is also provided with a locking structure, the locking shaft passes through the first unlocking limiting structure 17 and the second drawing connecting part 47, and then the locking structure is assembled on the locking shaft, so that the locking shaft cannot be drawn out at will, for example, the locking shaft can be provided with a lock hole, and the locking shaft passes through the first unlocking limiting structure 17 and the second drawing connecting part 47 and then is assembled on the lock hole as the locking structure. Still other lock configurations may be a lead sleeve, or may be a threaded cap that is threadably connected to the lock shaft.

Embodiment three as shown in fig. 9-10

The third embodiment is basically the same as the second embodiment, and the difference lies mainly in the drawing device 3, the drawing member 30 of the drawing device 3 includes an operating rod 33 and two connecting rods 32, one end of each of the two connecting rods 32 is connected with the operating rod 33 to form a U-shaped structure, and the other end parts of the two connecting rods 32 are bent to the side close to each other to form the driving convex rod 31. When handle piece 10 rotated to the unblock position, draw the second of connecting portion 47 as the second and draw the hole and correspond as the spacing groove of first unblock limit structure 17, draw two drive protruding poles 31 of piece 30 from the outside of circuit breaker casing 4, pass the second earlier and draw the hole, insert the spacing inslot, because of the protruding 21 retraction circuit breaker casing 4 of locking piece 20 this moment in, can draw out plug-in circuit breaker from the rack with the help of drawing piece 30. Of course, the first unlocking limiting structure 17 may also be a limiting hole structure. In the plug-in circuit breakers of the second and third embodiments, the pulling device 3 simultaneously plays a role in locking the handle mechanism 1 at the unlocking position and applying a pulling force, and the plug-in circuit breaker can be ensured to be in an opening state and then connected with the pulling device 3, so that the electricity utilization safety is ensured. Of course, the third plug-in circuit breaker of the embodiment, when a plurality of plug-in circuit breakers are inserted into the cabinet side by side, or when a multi-pole circuit breaker is assembled side by side, the sidewall of the circuit breaker housing 4 will be clung to, and the second drawing connection portion 47 will be shielded, so that the drawing device 3 is difficult to be installed from the outside of the circuit breaker housing 4.

As another embodiment, the plug-in circuit breaker may further include a second unlocking limit structure, when the handle member 10 is rotated to the unlocking position, the unlocking portion 12 of the handle member 10 drives the locking mechanism 2 to unlock, so that the locking protrusion 21 is retracted into the circuit breaker housing 4, and the second unlocking limit structure limits and locks the first unlocking limit structure 17 of the handle member 10, so as to lock the handle mechanism 1 in the unlocking position. The second unlocking limiting structure can be a limiting protrusion or a limiting groove arranged on the circuit breaker shell 4, and the first unlocking limiting structure 17 can be a corresponding limiting groove or a corresponding limiting protrusion; the second unlocking limiting structure can also be an independent limiting shaft, for example, the limiting shaft passes through a second limiting hole on the circuit breaker shell 4 and a limiting groove or a limiting hole serving as the first unlocking limiting structure 17, and the limiting shaft can also be slidably mounted on the circuit breaker shell 4. And the third drawing connecting part is arranged on the circuit breaker shell 4 or the handle mechanism 1 and is used for being connected with the drawing device 3, and the drawing force is applied through the drawing device 3 to draw the plug-in circuit breaker out of the cabinet. In this embodiment, before the circuit breaker is pulled out, the handle mechanism 1 needs to be locked at the unlocking position, so that the locking protrusion 21 of the locking member 20 retracts into the circuit breaker housing 4, otherwise, the circuit breaker cannot be pulled out.

Embodiment four as shown in fig. 11-12

The fourth embodiment is substantially the same as the second embodiment, and the same parts are not described again, and the difference is mainly in the drawing device 3. The drawing device 3 comprises a drawing piece 30, two connecting rods 32 extend out of the drawing piece 30, and the end parts of the two connecting rods 32 are bent to form a driving convex rod 31 for being connected with the plug-in circuit breaker. The drawing piece 30 is in a block structure, and a user can directly operate the drawing piece 30 to draw out the plug-in circuit breaker; preferably, the pulling member 30 is provided with an operation hole 34, the operation hole 34 can be used for manual pulling, and can also be used for installing an external lock to prevent the handle mechanism 1 from being operated, for example, the operation hole 34 can lock the handle mechanism 1 after being locked with other holes or fixed members. In addition, when the circuit breaker includes a plurality of plug-in circuit breakers spliced side by side, the plurality of pullers 30 may be coupled through the operation hole 34 to simultaneously pull out the plurality of plug-in circuit breakers from the cabinet.

The embodiments of the handle mechanism 1, the locking mechanism 2 and the pulling device 3 according to the embodiments of the present application can be combined or substituted with each other, and the above is a further detailed description of the invention in connection with specific preferred embodiments, and it is not considered that the specific embodiments of the invention are limited to these descriptions. For those skilled in the art to which the invention pertains, several simple deductions or substitutions can be made without departing from the inventive concept, and all should be considered as falling within the protection scope of the invention.

It should be noted that in the description of the present invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when used, and are only for convenience of description, but do not indicate that the referred device or element must have a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish one description from another, and are not to be construed as indicating relative importance.

Claims (18)

1. The utility model provides a plug-in circuit breaker, includes circuit breaker casing (4) and locking mechanical system (2) of setting in circuit breaker casing (4), handle mechanism (1) rotate the installation and be connected with operating device for drive circuit breaker divide-shut brake, its characterized in that: an unlocking part (12) is arranged on the handle mechanism (1); handle mechanism (1) can rotate closing position, separating brake position and unblock position, separating brake position is located between closing brake position and the unblock position, when handle mechanism (1) rotated closing brake position, the drive circuit breaker combined floodgate, when rotating separating brake position from closing brake position, the drive circuit breaker separating brake, when rotating separating brake position from separating brake position, the unblock portion (12) drive locking mechanical system (2) unblock of handle mechanism (1).

2. Plug-in circuit breaker according to claim 1, characterized in that: the handle mechanism (1) is provided with a drawing connecting part (11); the drawing device (3) can be connected with the drawing connection part (11), the drawing force of the drawing device (3) can drive the handle mechanism (1) to rotate to the unlocking position from the opening position, the unlocking part (12) drives the locking mechanism (2) to unlock, and the plug-in circuit breaker is pulled out of the cabinet.

3. The plug-in circuit breaker according to claim 2, characterized in that: be equipped with on circuit breaker casing (4) and shelter from the structure, handle mechanism (1) when rotating the combined floodgate position, shelter from the structure and shelter from drawing connecting portion (11), make draw gear (3) can not be connected with drawing connecting portion (11), handle mechanism (1) when rotating the branch floodgate position, shelter from the structure and dodge and draw connecting portion (11).

4. Plug-in circuit breaker according to claim 2, characterized in that: when handle mechanism (1) rotated the on-off position, draw connecting portion (11) and rotate to circuit breaker casing (4) in, when handle mechanism (1) rotated the separating brake position, draw connecting portion (11) and rotate outside circuit breaker casing (4).

5. The plug-in circuit breaker according to claim 1, characterized in that: be equipped with first unblock limit structure (17) on handle mechanism (1), be equipped with the second on circuit breaker casing (4) and draw connecting portion (47), when handle mechanism (1) rotated the unblock position from the separating brake position, first unblock limit structure (17) were drawn connecting portion (47) with the second and are corresponded, and draw device (3) can be drawn connecting portion (47) and first unblock limit structure (17) with the second and be connected, locks handle mechanism (1) in the unblock position.

6. Plug-in circuit breaker according to claim 5, characterized in that: when handle mechanism (1) rotated to the separating brake position and/or the closing brake position, connecting portion (47) and first unblock limit structure (17) dislocation are drawn to the second.

7. Plug-in circuit breaker according to claim 1, characterized in that: the plug-in circuit breaker is characterized in that a first unlocking limiting structure (17) is arranged on the handle mechanism (1), the plug-in circuit breaker further comprises a second unlocking limiting structure, and when the handle mechanism (1) rotates to an unlocking position, the second unlocking limiting structure limits and locks the first unlocking limiting structure (17) and locks the handle mechanism (1) at the unlocking position; and a third drawing connection part is arranged on the breaker shell (4) or the handle mechanism (1) and is used for being connected with the drawing device (3).

8. Plug-in circuit breaker according to claim 1, characterized in that: handle mechanism (1) includes handle spare (10), handle spare (10) include handle axis of rotation (15) and with handle axis of rotation (15) radial connection's operating handle (16), handle spare (10) are installed in circuit breaker casing (4) through handle axis of rotation (15) rotation, unblock portion (12) are the unblock boss of setting on handle axis of rotation (15).

9. Plug-in circuit breaker according to claim 2, characterized in that: handle mechanism (1) includes handle spare (10), handle spare (10) include handle axis of rotation (15) and with handle axis of rotation (15) radial connection's operation handle (16), handle spare (10) are installed in circuit breaker casing (4) through handle axis of rotation (15) rotation, draw connecting portion (11) and draw the hole for setting up on handle axis of rotation (15), draw the eccentric setting in center of rotation of hole and handle axis of rotation (15).

10. The plug-in circuit breaker according to claim 9, characterized in that: the radial direction of handle axis of rotation (15) is equipped with draws assembly groove (111), draws assembly groove (111) and draws the hole intercommunication, drive projecting bar (31) of draw gear (3) stretch into draw assembly groove (111) in, and insert and draw downthehole and be connected with handle spare (10).

11. Plug-in circuit breaker according to claim 5, characterized in that: handle mechanism (1) includes handle spare (10), first unblock limit structure (17) are spacing groove or spacing hole for setting up on handle spare (10), the second is drawn connecting portion (47) and is drawn the hole for the second that sets up on circuit breaker casing (4).

12. Plug-in circuit breaker according to claim 2, characterized in that: the drawing device (3) comprises a drawing piece (30), and the drawing piece (30) is provided with a driving convex rod (31).

13. The plug-in circuit breaker according to claim 12, characterized in that: draw piece (30) including action bars (33) and two connecting rods (32), the one end of two connecting rods (32) is connected with action bars (33) respectively, and the other end tip of two connecting rods (32) is buckled each other to the one side of keeping away from and is formed drive protruding pole (31), or the other end tip of two connecting rods (32) is buckled each other to the one side of being close to and is formed drive protruding pole (31).

14. Plug-in circuit breaker according to claim 12, characterized in that: two connecting rods (32) are extended out of the drawing piece (30), the end parts of the two connecting rods (32) are bent to form a driving protruding rod (31), and an operation hole (34) is formed in the drawing piece (30).

15. Plug-in circuit breaker according to claim 1, characterized in that: locking mechanical system (2) are including locking piece (20), be equipped with the locking arch on locking piece (20), outside elastic component (25) drive locking piece (20) removed and make locking arch (21) stretch out circuit breaker casing (4), when handle mechanism (1) rotated the unblock position, unblock portion (12) drive locking piece (20) removed, in making locking arch (21) withdrawal circuit breaker casing (4), realized locking mechanical system (2) unblock.

16. The plug-in circuit breaker according to claim 15, characterized in that: locking mechanical system (2) still include unlocking piece (22), and unlocking piece (22) one end is used for driving locking piece (20), and unlocking piece (22) other end is located the route of turning round of unlocking part (12), when handle mechanism (1) rotated the unblock position, unlocking part (12) were through unlocking piece (22) drive locking piece (20), made locking protruding (21) retract in circuit breaker casing (4).

17. The plug-in circuit breaker according to claim 16, characterized in that: locking piece (20) straight line slides or rotates and install in circuit breaker casing (4), and unblock piece (22) rotate and install in circuit breaker casing (4), perhaps unblock portion (12) can drive unblock piece (22) around first protruding (23) rotation in circuit breaker casing (4), perhaps unblock portion (12) can drive unblock piece (22) around the rotation arch or rotate the kink on unblock piece (22) and rotate.

18. Plug-in circuit breaker according to claim 1, characterized in that: breaker housing (4) including relative operating surface and the rear end face that sets up, relative last lateral wall and the lower lateral wall that sets up to and two lateral walls that set up relatively, be equipped with handle swing hole (41) on the operating surface, be equipped with binding post (44) on the rear end face go up and be equipped with locking hole (42) on lateral wall and/or the lower lateral wall, locking mechanical system (2) are protruding (21) including can stretching out outside breaker housing (4) and the interior locking of withdrawal breaker housing (4), protruding (21) of locking stretches out from locking hole (42).

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