CN211238115U - Plug-in circuit breaker - Google Patents

Abstract

A plug-in circuit breaker comprises a shell, a button mechanism and an operating mechanism, wherein the button mechanism comprises a button, the button comprises a button piece, the button mechanism drives the operating mechanism to execute switching-on/switching-off, the circuit breaker further comprises a linkage piece arranged in the shell, and the linkage piece is provided with a collision boss; when the button-driven circuit breaker is switched on, the conflict boss of the button-driven linkage piece stretches out of the shell, the button mechanism limits the linkage piece to enable the conflict boss not to return the shell, and when the button-driven circuit breaker is switched off, the conflict boss of the linkage piece returns the shell, so that the structure is simple, the switching-on plug can be reliably prevented, and the risk of hot-line operation is avoided.

Description

Plug-in circuit breaker

Technical Field

The utility model relates to a low voltage terminal electrical apparatus technical field, especially a plug-in circuit breaker.

Background

With the rapid development of network communication technology, especially the application popularization of 5G networks, the requirement for effectively improving the safety of electrical equipment by a circuit breaker is higher and higher, the traditional power supply mode of connecting a plurality of sockets and plugboards with one terminal circuit breaker is far from meeting the requirements of safe power utilization and equipment protection, for example, the terminal circuit breaker for 5G communication equipment needs to be upgraded and improved in the aspects of miniaturization, intellectualization, reliability, stability and the like, and a plurality of new matching structures are expanded on the use requirement, for example, the circuit breaker is required to be plugged and unplugged conveniently like a plug, and the new circuit breaker is called a plug-in circuit breaker, but the new circuit breaker does not belong to the traditional plug-in, drawer and universal circuit breakers. The novel plug-in circuit breaker can not only provide various safety protection performances of the circuit breaker for power lines and electrical equipment, but also meet the requirements of different electrical equipment on power quality, and can be conveniently assembled in/disassembled from the circuit in a plug-in mode. Therefore, the structure of the plug-in circuit breaker has been developed to various types, but under the trend of miniaturization development of electrical equipment, the overall structure and operation mode of the matched circuit breaker still needs to be further improved, optimized and upgraded urgently.

The existing plug-in circuit breaker lacks the function of preventing plugging and unplugging under a closing state, or the structure of a locking device with the plugging and unplugging preventing function is too complex, the transmission is complex or the occupied space is too much.

Furthermore, the locking devices of existing plug-in circuit breakers are usually actuated by a push-button; meanwhile, the opening and closing indication of the plug-in circuit breaker also needs to display the opening and closing state in the opening and closing process, and more mechanisms need to be matched to act in the opening and closing process, and all the mechanisms need to be provided with independent transmission matching mechanisms, so that the occupied space is large, and the production design of later-stage circuit breaker miniaturization is not facilitated.

Disclosure of Invention

The utility model aims at providing a can reliably prevent bayonet circuit breaker of combined floodgate plug.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a plug-in circuit breaker comprises a shell, a button mechanism and an operating mechanism, wherein the button mechanism comprises a button, the button comprises a button piece, the button mechanism drives the operating mechanism to execute switching-on/switching-off, the circuit breaker further comprises a linkage piece arranged in the shell, and the linkage piece is provided with a collision boss; when the button-driven circuit breaker is switched on, the conflict boss of the button mechanism-driven linkage piece stretches out of the shell, the conflict boss is limited by the button mechanism to the linkage piece and cannot return to the shell, and when the button-driven circuit breaker is switched off, the conflict boss of the linkage piece returns to the shell.

Preferably, the button further comprises an indicating member arranged in the button member and used for indicating the closing/opening state of the circuit breaker, when the button drives the circuit breaker to open, the indicating member acts to indicate opening, and the linkage member is driven to enable the abutting lug boss to return to the shell.

Preferably, when the button drives the circuit breaker to be switched on, the indicating piece acts to indicate the circuit breaker to be switched on, and the abutting lug boss of the driving linkage piece extends out of the shell.

Preferably, when the button-driven circuit breaker is switched on, the interference boss of the button-driven linkage member extends out of the shell.

Preferably, the linkage piece is rotatably arranged on the shell, one end of the linkage piece is provided with a butting boss, and the other end of the linkage piece is provided with a linkage piece driving part extending towards the button direction; the indicating piece comprises a rotating shaft, a display end surface and a driving boss, an indicating part used as a switching-on and switching-off mark is arranged on the display end surface, a cavity type mounting hole is formed in the button piece, and an observation window communicated with the mounting hole is arranged on the operation end surface of the button piece; the indicating piece is arranged in the mounting hole of the button piece through the rotating shaft and can swing around the shaft, the swinging drives the indicating part on the display end face to move under the observation window, and the corresponding opening and closing state is displayed through the indicating part moving into the observation window; when the button moves into the shell to drive the breaker to be switched on, the driving boss of the indicating part is matched with the linkage part driving part of the linkage part to enable the indicating part to rotate, and the area, corresponding to the switching-on state, of the indicating part on the display end face corresponds to the observation window; when the button moves outwards the shell to drive the breaker to open the brake, the driving boss of the indicating piece is matched with the driving part of the linkage piece, the indicating piece rotates to enable the area, corresponding to the brake opening state, of the indicating part on the display end face to correspond to the observation window, and the driving boss drives the linkage piece to rotate through the driving part of the linkage piece to enable the abutting boss of the linkage piece to return into the shell.

Preferably, when the button moves into the shell to drive the circuit breaker to be switched on, the driving boss of the indicating piece is matched with the linkage piece driving part of the linkage piece to enable the indicating piece to rotate and the linkage piece to rotate, so that the abutting boss of the linkage piece extends out of the shell.

Preferably, the breaker further comprises a locking piece, the locking piece is mounted in the shell through an elastic piece, the locking piece is provided with a locking boss, and when the breaker is in an opening state, the elastic piece enables the locking boss of the locking piece to extend out of the shell; the linkage piece is provided with an unlocking part matched with the locking piece, after the circuit breaker is opened, when the button moves towards the outside of the shell, the indicating piece drives the linkage piece to rotate, and the unlocking part of the linkage piece applies force to the locking piece to enable the locking boss to return to the inside of the shell.

Preferably, the driving boss is provided with a left driven end and a right driven end at intervals, the linkage piece driving part of the linkage piece is bent towards one side of the button and is positioned between the left driven end and the right driven end, when the button moves towards the inside of the shell to drive the breaker to be switched on, the left driven end is matched with the linkage piece driving part of the linkage piece, and when the button moves towards the outside of the shell, the right driven end is matched with the linkage piece driving part of the linkage piece.

Preferably, the button mechanism comprises a button, a connecting rod and a driving piece, the button drives the driving piece to act through the connecting rod, and the driving piece is rotatably arranged in the shell and connected with the operating mechanism; the locking piece is installed in the shell through the linear moving pair, and the direction of linear movement of the locking piece is perpendicular to the installation inserting direction of the circuit breaker, the locking piece comprises an outward extending column, when the circuit breaker is in a closing state, the elastic piece enables a locking boss of the locking piece to extend out of the shell, and the outer side face of the driving piece and the outward extending column of the locking piece are abutted and matched to enable the locking piece not to return into the shell.

Preferably, the shell is provided with a limiting hole, and the abutting lug boss of the linkage piece and the locking lug boss of the locking piece are matched with the same limiting hole.

Preferably, the interference boss is a square boss, and the side surfaces of the two sides of the square boss are perpendicular to the installation and insertion direction of the circuit breaker.

The utility model discloses a plug-in circuit breaker through the cooperation of button mechanism and a linkage, has realized that the circuit breaker can not insert the rack under the combined floodgate state, or can not be extracted from the rack, and the structure is very simple.

Especially, through setting up indicator and the linkage cooperation in the button in, during the separating brake, the indicator moves when instructing the separating brake, and the conflict boss of drive linkage returns to in the casing simultaneously to plug-in circuit breaker's normal plug during the separating brake is realized, through the cooperation of indicator and linkage, reduces the drive mechanism who triggers both actions, makes both occupy less space in the circuit breaker, does benefit to the miniaturized design of circuit breaker.

In addition, the conflict boss of drive linkage stretches out outside casing 6 when the indicator action instructs the combined floodgate, prevents that the circuit breaker from inserting under the combined floodgate state, improves the security.

In addition, the linkage piece still links with the locking piece, when needing to pull down the circuit breaker, releases the locking piece through the linkage piece, makes the locking boss of locking piece return in the casing, makes the circuit breaker safely extract from the installation rack.

Drawings

Fig. 1 is a schematic diagram of the overall structure of the plug-in circuit breaker of the present invention.

Fig. 2 is a schematic view of the structure of the button mechanism, the linkage and the locking member of fig. 1.

Fig. 3 is a partially enlarged schematic view of the linkage member and the handle and locking member of the present invention.

Fig. 4 is a schematic view of the structure of the plug-in type circuit breaker in an anti-live insertion state during installation.

Fig. 5 is a schematic view of the plug-in circuit breaker in a closing prevention pull-out state.

Fig. 6 is an enlarged partial schematic view of the linkage and lock and handle in a properly installed and closed position.

Fig. 7 is a partially enlarged schematic view of the opening/closing instruction and unlocking mechanism of the button mechanism.

Fig. 8 is a partially enlarged schematic view of the opening and closing indicating and unlocking mechanism in the opening state.

Fig. 9 is a partially enlarged schematic view of the switching instruction and unlock mechanism in the closed state.

Fig. 10 is an overall configuration diagram of the opening/closing indication and unlocking mechanism in the opening/closing state.

Fig. 11 is a schematic structural view of a linkage and housing embodiment of the present invention.

Detailed Description

The following describes the embodiment of the plug-in circuit breaker according to the present invention with reference to fig. 1 to 11. The plug-in circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, the utility model discloses an insert circuit breaker includes casing 6, button mechanism, operating device 9 of being connected with the drive of button mechanism, moving contact 9a that links to each other with operating device 9, the static contact 9b that sets up relatively with moving contact 9a, generally still include (but not limited to) short-circuit protection mechanism 11, arc control device 12, overload protection mechanism 14, be qualified for the next round of competitions connecting device 13, inlet wire connecting device 1a, 1b and other spare parts (not shown in the figure) that the circuit breaker has, button mechanism drive operating device 9 drives moving contact and static contact switching-on, or drive operating device 9 drives moving contact and static contact separation separating brake, button mechanism has the closing position and the separating brake position corresponding with circuit breaker closing/separating brake state.

As shown in fig. 1-2, still be equipped with locking device in the plug-in circuit breaker, be equipped with on casing 6 with locking device complex spacing hole 61, be equipped with the spacing hole B0 of rack on the rack sheet metal component B of the acceptor that plug-in circuit breaker inserts, when plug-in circuit breaker installs to the operating position, plug-in circuit breaker's spacing hole 61 corresponds with the spacing hole B0 of rack, when plug-in circuit breaker did not install to the operating position, plug-in circuit breaker's spacing hole 61 misplaces with the spacing hole B0 of rack, the spacing hole B0 of rack can be sheltered from to rack sheet metal component B, this is the prior art in this field, no longer describe herein.

As shown in fig. 1 and 4-5, the utility model discloses a plug-in circuit breaker, including casing 6, button mechanism and the operating device 9 that is equipped with spacing hole 61, the closing/separating brake is carried out to button mechanism drive operating device 9, and button mechanism has the closing position and the separating brake position corresponding with circuit breaker closing/separating brake state. The button mechanism comprises a button 2, a connecting rod 7 and a driving piece 5, the button 2 drives the driving piece 5 to act through the connecting rod 7, and the driving piece 5 is rotatably arranged in the shell 6 and connected with an operating mechanism 9; the button 2 is pressed, the button 2 drives the driving piece 5 to rotate to one side through the connecting rod 7, the driving piece 5 drives the operating mechanism 9 through the U-shaped rod 8 to drive the moving contact 9a to be in contact with the static contact 9b to achieve switching-on, the button 2 is pulled, the button 2 drives the driving piece 5 to rotate to the other side through the connecting rod 7, and the driving piece 5 drives the operating mechanism 9 through the U-shaped rod 8 to drive the moving contact 9a to be separated from the static contact to achieve switching-off. The driving part 5 has a function similar to that of a handle of a traditional miniature circuit breaker, the operating mechanism usually comprises a contact support, a lock catch and a trip buckle which are connected with the moving contact 9a, the short-circuit protection mechanism 11 and the overload protection mechanism 14 are arranged corresponding to the lock catch of the operating mechanism, and when a short circuit or an overload occurs, the short circuit or the overload respectively acts on the lock catch to enable the operating mechanism to be tripped, so that the circuit breaker is opened and protected.

An improvement point of the utility model is that the circuit breaker further comprises a locking device, the locking device comprises a linkage piece 3 and a locking piece 4 which are arranged in a shell 6, the linkage piece 3 is provided with a collision boss 31, and the locking piece 4 is provided with a locking boss 41 which is arranged corresponding to the limiting hole 61; when the button mechanism is in the switching-on position, the interference boss 31 of the linkage piece 3 extends out of the shell 6, and is limited by the button mechanism 2 in the extending position and cannot return into the shell; when the button mechanism is in the opening position, the linkage member 3 retracts into the shell 6, the locking boss 41 of the locking member 4 extends out of the limiting hole 61 of the shell 6, and after the retraction external force is applied to the locking member 4, the locking member 4 can be pushed by the retraction external force to retract into the shell 6. In one embodiment, the abutting boss 31 of the linkage member 3 is disposed corresponding to the second limiting hole on the housing 6, the second limiting hole is disposed side by side with the limiting hole 61, and when the button mechanism is in the switch-on position, the abutting boss 31 extends out of the second limiting hole of the housing 6. As another preferred embodiment, the second limiting hole and the limiting hole 61 are the same limiting hole, and the abutting boss 31 and the locking boss 41 share the same limiting hole 61. In this embodiment, the interference boss 31 and the locking boss 41 share the same limiting hole 61.

As shown in fig. 4 and 11, the circuit breaker is switched on before installation, the linkage member 3 is driven by the first driving portion 20 of the button 2 to rotate counterclockwise, the collision boss 31 of the linkage member 3 extends out of the limiting hole 61 of the casing 6, and is abutted against the limit by the first driving portion 20 of the button 2 at the extending position and cannot return to the casing, when the circuit breaker is installed in the cabinet body, the right contour surface 31B of the collision boss 31 is abutted against and matched with the transverse end surface B1 of the cabinet sheet metal part, the circuit breaker cannot be installed to a working position, live operation is avoided, and safety is improved.

As shown in fig. 5, for the condition that the circuit breaker is correctly installed and switched on, the conflict boss 31 of the link 3 stretches out of the limiting hole 61 of the casing 6, and is abutted against and limited in the stretching position and can not return the casing by the first driving part 20 of the button 2, the left contour surface 31a of the conflict boss 31 conflicts with a hole wall surface B2 of the cabinet limiting hole B0 of the cabinet sheet metal part, at this moment, the circuit breaker is pulled outwards, the circuit breaker can not be pulled out from the working position, the live operation is avoided, and the safety is improved.

As shown in fig. 1 and 6, the locking member 4 is installed in the housing 6 through an elastic member, the locking member 4 is provided with a locking boss 41 opposite to the limiting hole 61, the elastic member is installed between the locking member 4 and the housing 6, the locking member 4 has two working positions of extension and retraction, the elastic member enables the locking boss 41 of the locking member 4 to extend out of the limiting hole 61, and when the circuit breaker is opened, after a retraction external force is applied to the locking member 4, the locking member 4 overcomes the biasing force of the elastic member to enable the locking boss 41 to retract into the housing. Through the locking boss 41 that makes locking piece 4 stretch out spacing hole when the separating brake, can prevent effectively that the circuit breaker from shaking out the rack because of reasons such as transportation, simultaneously because exert indentation external force for locking piece 4 and enable locking boss 41 and return to in the casing, make under the separating brake state, when the circuit breaker inserts the rack, the locking boss 41 of locking piece 4 returns to in the casing under the extrusion external force effect that the rack sheet metal component was applyed, make the circuit breaker can insert in the rack smoothly. Preferably, the section of the locking boss 41 of the locking member 4 extending out of the limiting hole 61 is a right trapezoid or a right triangle, the locking boss 41 comprises a straight surface and an inclined surface perpendicular to the side wall of the limiting hole 61, the straight surface faces the direction of pulling out the cabinet from the circuit breaker, and the inclined surface faces the direction of inserting the circuit breaker into the cabinet, so that the circuit breaker is easily inserted into the cabinet during opening. The elastic member is a compression spring 10, and of course, the elastic member may also be a torsion spring or other elastic members such as a leaf spring.

Further preferably, as shown in fig. 2, when the button mechanism is in the open position, and after a retraction external force is applied to the locking member 4, and the locking boss 41 of the locking member 4 is retracted into the housing, the locking member 4 and the button mechanism are in a matching abutting engagement, so that the button mechanism is prevented from being switched from the open position to the closed position, the plug-in circuit breaker cannot be switched on when being installed in the cabinet, and the button 2 cannot be pressed in place, thereby avoiding live operation. As shown in fig. 3, in a preferred embodiment, the locking member 4 further includes an extending column 42, and the driving member 5 includes a driving limiting portion 51 cooperating with the extending column 42, where the driving limiting portion 51 is a step provided on a side wall of the driving member 5, and may also be a groove or a protrusion provided on the driving member 5. When the button mechanism is located at a switch-off position, the driving limiting part 51 of the driving piece 5 rotates to the position of the outward extending column 42 facing the locking piece 4, when the plug-in circuit breaker is inserted into the working position but is not installed to the working position, the limiting hole 61 of the plug-in circuit breaker is staggered with the cabinet limiting hole B0, the locking boss 41 of the locking piece 4 returns into the shell under the action of extrusion external force applied by a cabinet sheet metal part, the outward extending column 42 of the locking piece 4 extends into the driving limiting part 51 and is in limiting fit with the driving limiting part 51 to resist the rotation of the driving piece 5 in the switch-on direction, the button mechanism is prevented from being switched to the switch-on position from the switch-on position, the plug-in circuit breaker can not be switched in the. In this embodiment, the locking member 4 and the driving member 5 are in abutting fit to prevent the button mechanism from being switched from the opening position to the closing position, so that the layout structure is more reasonable and the occupied space is small. Of course, the locking member 4 may also be in abutting fit with the button 2 or the connecting rod 7, for example, the button 2 cannot be pressed into the circuit breaker to close the circuit breaker by being limited by a boss or a slot on the button 2; the connecting rod 7 can not act towards the closing direction through the resisting and matching of the hook extending from the connecting rod 7.

Further preferably, as shown in fig. 5, when the button mechanism is in the switching-on position, the locking boss 41 of the locking member 4 extends out of the limiting hole 61 of the housing 6 and is limited by the button mechanism at the extending position and cannot return to the housing, so as to assist the linkage member 3, and prevent the circuit breaker from being inserted into and pulled out of the cabinet in the switching-on state (the locking member 4 plays an auxiliary role, since the inclined plane 412 of the locking boss 41 of the locking member is at a certain inclination angle with the outer surface of the circuit breaker, even though the locking boss 41 is always exposed outside, since the cabinet body sheet metal part structure has certain elasticity, the circuit breaker may be forced to be pushed into under the switching-on condition, thereby causing a potential safety. In a preferred embodiment, the driving member 5 has an outer side 52, when the button mechanism is in the closing position, the locking boss 41 of the locking member 4 extends out of the housing 6, and the driving limiting portion 51 of the driving member 5 is rotated away and dislocated with the extending column 42, so that the outer side 52 of the driving member 5 is rotated to a position where it abuts against and is engaged with the extending column 42 of the locking member 4, and the locking member 4 cannot be retracted into the housing 6; when the button mechanism is in the brake-separating position, the outer side surface 52 of the driving piece 5 is dislocated with the locking piece 4, the resisting fit is released, and at the moment, the driving limiting part 51 of the driving piece 5 rotates to the position corresponding to the outer extending column 42.

Further preferably, after the circuit breaker is opened, the button mechanism can be pulled to move towards the outside of the housing 6, and the locking boss 41 of the locking member 4 retracts into the housing 6 in the process that the button mechanism moves towards the outside of the housing 6. Preferably, in the process that the button mechanism moves towards the outside of the shell 6, the button mechanism drives the linkage 3, and the linkage 3 drives the locking piece 4 to unlock so that the locking boss 41 retracts into the shell 6. As shown in fig. 3, a preferred embodiment of the locking member 4, the locking member 4 is installed in the housing 6 by a linear moving pair, the linear moving direction of the locking piece is vertical to the installation and insertion direction of the circuit breaker, the locking piece 4 is arranged between the button mechanism and the limiting hole 61, the upper part of the locking piece 4 close to the limiting hole 61 is provided with a locking lug boss 41, the lower part close to the button mechanism is provided with an outward extending column 42, a linkage step 43 matched with the linkage piece 3 is arranged at one side of the locking lug boss 41, the elastic piece is arranged between the lower part of the locking piece 4 and the shell 6, the elastic piece makes the locking boss 41 of the locking piece 4 extend out of the limiting hole 61, after the breaker is opened, in the process that the button mechanism moves towards the outside of the shell 6, the button mechanism drives the linkage piece 3, the linkage piece 3 acts on the linkage step 43, and the locking piece 4 overcomes the elastic force of the elastic piece to enable the locking boss 41 to retreat into the shell 6. Obviously, the beneficial effect of this scheme lies in: first, since the locking member 4 moves linearly in a direction perpendicular to the installation insertion direction a, it is possible to effectively prevent or reduce the forced deformation and/or micro-displacement of the locking member 4 and the cabinet sheet metal member inserted into the receiving body. Second, it is difficult to force the locking member 4 to move back to the retracted position by manual brute force because the direction of the force applied by the outer surface 52 to the locking member 4 is substantially parallel to the linear movement direction of the locking member when the driving member 5 is in the on position. Thirdly, because the chute-slide pair can provide a great constraint force in the direction perpendicular to the horizontal movement, the external extending column 42 is matched with the driving limiting part 51, so that a great constraint force for resisting closing can be provided for the driving part 5, and the circuit breaker can be effectively prevented from being accidentally closed in the plugging operation process.

As shown in fig. 1 and 6, in the preferred embodiment of the linkage member 3, the linkage member 3 is rotatably disposed on the housing 6 and located between the button mechanism 2 and the limiting hole 61, the linkage member 3 includes the abutting boss 31 and the driven boss 32, in the closing process, the button mechanism pushes the driven boss 32 to make the abutting boss 31 extend out of the limiting hole 61, and the button mechanism and the driven boss 32 are in abutting fit to make the abutting boss 31 not return into the housing 6, in the opening process, the button mechanism releases the abutting fit and gives way with the driven boss 32, and the abutting boss 31 returns into the housing. Button mechanism includes button 2, connecting rod 7 and driving piece 5, button 2 passes through the 5 actions of connecting rod 7 drive driving piece, 5 pivoted settings of driving piece are in casing 6, and be connected with operating device 9, be provided with on the button 2 with the first drive division 20 of driven boss 32 complex, press button 2 to close a floodgate through connecting rod 7 and 5 drive operating device of driving piece, first drive division 20 on the button 2 drives linkage 3 anticlockwise rotation through driven boss 32, make conflict boss 31 stretch out outside spacing hole 61, when button mechanism is in the position of closing a floodgate, button 2 and driven boss 32 and the longitudinal surface 20a (meaning along the face that installation insertion direction A set up) butt of first drive division 20, make conflict boss 31 can not return in casing 6, prevent closing state circuit breaker's plug, avoid live-line operation. The operating mechanism is driven to be opened by pulling the button 2 through the connecting rod 7 and the driving piece 5, and when the button mechanism is in the opening position, the first driving part 20 of the button 2 and the driven boss 32 are staggered and avoided, so that the abutting boss 31 returns into the shell. When the button mechanism is in the opening position, the linkage 3 can be driven by the button mechanism to rotate clockwise to enable the abutting lug boss 31 to return into the shell, and a spring can be arranged to enable the linkage to rotate clockwise or rotate clockwise by means of the gravity of one end of the abutting lug boss 31.

Preferably, the linkage 3 further includes an unlocking portion 34 engaged with the locking member 4 and a linkage driving portion 33 engaged with the button mechanism, after the circuit breaker is opened, the button mechanism drives the linkage 3 to rotate through the linkage driving portion 33 when moving to the outside of the housing 6, and the unlocking portion 34 applies force to the locking member 4 to retract the locking boss 41 of the locking member 4 into the housing 6. Specifically, in the preferred embodiment of the linkage member 3, a rotation center is disposed in the middle of the linkage member 3, one side of one end of the linkage member, which is close to the limiting hole 61, is provided with a collision boss 31, the other side of one end of the linkage member is provided with an unlocking portion 34 which is matched with the locking member 4, the other end of the linkage member is provided with a linkage member driving portion 33 which is bent towards the button mechanism, and one side of the linkage member, which is close to the button mechanism, between the rotation center and the collision boss 31 is. The button mechanism is provided with a driving part matched with the linkage part driving part 33, in the brake separating process, the button mechanism is released from abutting matching with the driven boss 32 and gives way in the process of moving towards the outside of the shell 6, and the driving part on the button mechanism pulls the linkage part driving part 33 to drive the linkage part 3 to rotate so that the abutting boss 31 returns into the shell; when the button mechanism is in the brake separating position, the button mechanism can be pulled to move towards the outside of the shell 6, and the driving part continues to drive the linkage 3 to rotate in the process that the button mechanism continues to move towards the outside of the shell 6, so that the unlocking part 34 applies retraction external force to the locking part 4, and the locking part 4 retracts to the shell 6.

In one embodiment, when the button mechanism is in the opening position, the pulling button 2 drives the linkage 3 to rotate clockwise through the linkage driving part 33, so that the unlocking part 34 is pressed on the linkage step 43 of the locking part 4, the locking boss 41 of the locking part 4 is retracted into the shell 6, and the circuit breaker can be smoothly pulled out of the cabinet by pulling the button 2 after opening. In one embodiment, a boss on the button 2 is used as a driving part, and the bent part is pulled to make the abutting boss 31 of the linkage member 3 return back into the shell when the brake is switched off. In another embodiment, a return spring may be used to rotate the abutting boss 31 of the linkage member 3 in the direction away from the limiting hole 61, and when the button mechanism is disengaged from the abutting boss 32 and the button mechanism is retracted, the return spring returns the abutting boss 31 of the linkage member 3 into the housing.

In a preferred embodiment, the button 2 of the button mechanism comprises a button member 21 and an indicator member 22, the indicator member 22 is matched with the linkage member 3 to simultaneously realize switching-on and switching-off indication, and after switching-off, the locking boss 41 of the locking member 4 can be driven to retract into the shell 6. The indicating part 22 comprises a rotating shaft 221, a display end surface 223 and a driving boss 222 arranged on the rotating shaft 221, the driving boss 222 is used as a driving part to be matched with the linkage part driving part 33 of the linkage part 3, the display end surface 223 is provided with an indicating part used as a switching-on/off identification, the indicating part is provided with a corresponding color block or character used as a switching-on/off identification, a cavity type mounting hole 211 is arranged in the button part 21, an observation window 212 communicated with the mounting hole 211 is arranged on the operation end surface of the button part 21, the indicating part 22 is arranged in the mounting hole 211 of the button part 21 through the rotating shaft 22 and can swing around the shaft, the swing drives the indicating part on the display end surface 223 to move below the observation window 212, and the corresponding switching-on/off state is displayed through the indicating part moved into the observation window 212; when the circuit breaker is switched on, the button 2 moves into the shell 6, the driving boss 222 is matched with the linkage driving part 33 to enable the indicator 22 to rotate, and the area of the display end face 223, corresponding to the switching-on state, of the indicator corresponds to the observation window 212; when the circuit breaker is opened, the button 2 moves towards the outside of the shell 6, the driving boss 222 of the indicating piece 22 is matched with the linkage driving part 33, and the indicating piece 22 rotates to enable the area of the indicating part corresponding to the opening state on the display end surface 223 and the observation window 212 to correspondingly indicate the opening state. Meanwhile, the driving boss 222 drives the linkage member 3 to rotate through the linkage member driving part 33 so that the abutting boss 31 retracts into the shell, and at this time, the unlocking part 34 of the linkage member 3 does not drive the locking member 4 to retract into the shell 6 (the unlocking part 34 is just contacted with the linkage step 43 of the locking member 4 or a gap is left); after the circuit breaker is opened, the button 2 is continuously pulled, and when the button 2 moves towards the outside of the shell 6, the driving boss 222 drives the linkage 3 to rotate through the linkage driving part 33, and the unlocking part 34 applies force to the locking part 4 to enable the locking part 4 to retract into the shell 6.

In this embodiment, when the circuit breaker is closed, the first driving portion 20 of the button 2 is engaged with the driven boss 32 of the linkage member, and the abutting boss 31 of the linkage member is driven to extend out of the housing 6. As another embodiment, when the contact boss 31 of the link 3 is driven by the indicator 22 to protrude outside the housing 6, that is, when the button 2 moves into the housing 6 to drive the circuit breaker to close (see fig. 9), the driving boss 222 of the indicator 22 cooperates with the link driving part 33 of the link 3, and the indicator 22 rotates to make the area of the display end surface 223 corresponding to the closing state correspond to the observation window 212 to indicate closing, and at the same time, the link 3 rotates to make the contact boss 31 of the link 3 protrude outside the housing 6.

As shown in fig. 7-9, the driving boss 222 is disposed on one side of the rotating shaft 221, the driving boss 222 extends out of the button 2 and is engaged with the linking member driving portion 33, of course, the linking member driving portion 33 may be bent and extended into the button 2 and is engaged with the driving boss 222, and the driving boss 222 may not be disposed on the rotating shaft 221, for example, on one side of the connecting rod between the rotating shaft 221 and the display end surface 223.

Preferably, the driving boss 222 of the indicator 22 is provided with a left driven end 222b and a right driven end 222a at an interval, the linkage driving portion 33 of the linkage 3 is bent toward the button 2 and positioned between the left driven end 222b and the right driven end 222a, when the button 2 is pressed to perform a closing operation to the inside of the circuit breaker, the inclined surface of the left driven end 222b is subjected to the resistance of the linkage driving portion 33 to rotate counterclockwise, and at this time, a closing mark of a corresponding color of the indicating portion on the display end surface 223 can be displayed on the observation window 212. The corresponding opening and closing state is displayed by color of the color block moved into the observation window 212. The scheme has simple structure and can be combined with the scheme to simplify the unlocking structure. When the push button 2 is pulled to perform opening operation, the indicator right driven end 222a acts on the right side surface of the linkage member driving part 33 of the linkage member 3, the linkage member 3 rotates clockwise around a shaft under the stress to make the abutting lug boss 31 of the linkage member 3 retreat into the shell, the indicator 22 rotates clockwise, at the moment, an opening mark with a corresponding color of the indicator on the display end surface 223 can be displayed on the observation window 212, at the moment, the unlocking part 34 of the linkage member 3 is just contacted with the locking part 4 or a gap is reserved, and the locking lug boss 41 of the locking part 4 keeps extending out of the shell 6.

As shown in fig. 8, in the opening state, when the circuit breaker needs to be removed from the installation cabinet, the button mechanism is continuously pulled in the direction away from the circuit breaker, the right passive end 222a of the indicating member acts on the right side of the linkage member driving portion 33 of the linkage member 3, the linkage member 3 is forced to rotate clockwise around the shaft, the unlocking portion 34 acts on the linkage portion 43 of the locking member 4, the locking boss 41 slides and retracts into the circuit breaker against the thrust of the spring 10, the locking boss 41 and the cabinet are unlocked, and the circuit breaker can be removed from the working position, which has the following advantages: firstly, the indication display is directly linked with the plugging safety protection, so that a direct and fixed corresponding relation is formed between the closing/opening display and the extending/retracting positions of the locking boss 41 and the abutting boss 31, and an operator can intuitively master the current safety state of the circuit breaker. Second, it is possible to provide a possibility that the interference projection 31 and the locking projection 41 of the locking member 4 are protruded/retracted from the same common stopper hole 61, in which the manufacturing difficulty of the insertion receptor can be reduced, and the exchange and common use between the circuit breaker product and the insertion receptor can be facilitated, thereby reducing the use cost of the user. Thirdly, simple structure, the part number is few, provides effective support for the miniaturization and the low-cost manufacturing of circuit breaker product.

Preferably, the interference boss 31 is a square boss, the side surfaces of both sides of the square boss are perpendicular to the installation and insertion direction of the circuit breaker, the side surfaces of both sides of the interference boss 31 are a left contour surface 31a and a right contour surface 31b, when the interference protrusion 31 is located at the protruding position, the left and right contour surfaces 31a and 31b are perpendicular to the sidewall of the stopper hole 61, i.e., perpendicular to the installation insertion direction of the circuit breaker, the left contoured surface 31a prevents the circuit breaker from being pulled out of the cabinet in the direction in which the circuit breaker is pulled out of the cabinet, the right contoured surface 31b prevents the circuit breaker from being inserted into the cabinet in the direction in which the circuit breaker is inserted into the cabinet, wherein the right contoured surface 31B is interference fit with a transverse end surface B1 of the cabinet sheet metal member inserted into the recipient to prevent insertion of the circuit breaker, and left side profile face 31a contradicts the cooperation with a hole wall B2 of inserting the spacing hole B0 of the rack sheet metal component of acceptor, and its beneficial effect lies in: the stress deformation of the inserted receptor can be effectively reduced, and the adaptation tolerance of the inserted receptor can be effectively relaxed, so that the use is effectively facilitated, and the use cost is reduced. Preferably, the side of the passive boss 32 close to the button 2 is a slope.

Specifically, as shown in fig. 1 the utility model discloses a plug-in circuit breaker's preferred embodiment, button mechanism includes button 2, connecting rod 7 and driving piece 5, and button 2 passes through connecting rod 7 drive driving piece 5 and rotates, and driving piece 5 carries out combined floodgate/separating brake through connecting rod 8 drive operating device 9, button mechanism and driving piece 5 have the combined floodgate position and the separating brake position corresponding with circuit breaker combined floodgate/separating brake respectively, promptly: in the on state, the button mechanism and the driver 5 respectively have a certain position (on position), and in the off state, the button mechanism and the driver 5 respectively also have a certain position (off position); the on/off position corresponds to the on/off of the movable contact 9a and the stationary contact 9 b.

Be equipped with spacing hole 61 on the casing 6, locking piece 4 slides and sets up in the position that corresponds with driving piece 5, is located between driving piece 5 and the spacing hole 61, linkage 3 rotates and sets up between button 2 and spacing hole 61, linkage 3 sets up in the left side of locking piece 4, is located button mechanism's top.

The utility model discloses a profitable characteristics are, when button mechanism is in the on-off position, linkage 3 is restricted at the extended position and can not retreat to the indentation position by button mechanism, and the beneficial effect of this structure lies in: the circuit breaker can reliably prevent plugging and unplugging of closing, namely, the circuit breaker is prevented from being plugged and unplugged forcibly in a closing state; due to the characteristic that the structure cannot be retracted to the retracted position, the capability of the circuit breaker product for resisting abnormal brute force insertion is effectively enhanced. While the position of the linkage 3 when the button mechanism is in the opening position can have various technical solutions. One of the alternatives is that the linkage 3 is not limited by the button mechanism and can be switched between the extended position and the retracted position, which has the advantage of a simple structure. Alternatively, and preferably, the linkage 3 is limited by the button mechanism and is in the retracted position when the button mechanism is in the opening position, which is advantageous in that: the resistance brought to the normal plug of circuit breaker by linkage 3 can be directly avoided. The utility model discloses another advantage of device lies in, acts as the unlocking piece with linkage 3, can simplify the structure of unlocking mechanism, reduces part quantity to can realize linkage 3 and drive locking piece 4 indentation simultaneously, make linkage 3 and drive locking piece 4 do not produce any resistance to the normal plug of circuit breaker.

The utility model discloses a another profitable characteristics are, when the circuit breaker is in the separating brake state, outside locking boss 41 of locking piece 4 stretches out casing 6, nevertheless when it receives indentation external force (only can not make locking piece 4 indentation when having the horizontal force, need have the perpendicular component of indentation direction), can be pushed by indentation external force and return to in the casing 6, do not prevent promptly that the circuit breaker from inserting the rack under the separating brake state, can protect the circuit breaker again because receive vibrations and fall out from the rack in the in-process such as transportation. The utility model discloses a another profitable characteristics are, when button mechanism is in the separating brake position, when locking boss 41 of locking piece 4 returns to the casing in, locking piece 4 supports driving piece 5 and keeps out, makes driving piece 5 unable rotation, prevents button mechanism from switching to the closing brake position from the separating brake position, makes the unable combined floodgate of circuit breaker. The utility model discloses a another profitable characteristics are, when button mechanism is in the switching-on position, locking piece 4 is restricted by driving piece 5 and can not withdraw to the indentation position in the extended position, can reliably prevent as complementary unit and linkage 3 together that the circuit breaker from being extracted by the force under the combined floodgate state, because the structure provides can not withdraw to the characteristics of indentation position, has effectively strengthened the ability that the circuit breaker product confronted the improper brute force and extracted.

The utility model discloses locking piece 4 has following beneficial effect: first, since the locking member 4 moves linearly in a direction perpendicular to the installation insertion direction a, it is possible to effectively prevent or reduce the forced deformation and/or micro-displacement of the locking member 4 and the cabinet sheet metal member inserted into the receiving body. Second, it is difficult to force the locking member 4 to move back to the retracted position by manual brute force because the direction of the force applied by the outer surface 52 to the locking member 4 is substantially parallel to the linear movement direction of the locking member when the driving member 5 is in the on position. Thirdly, because the chute-slider pair can provide a great constraint force in the direction perpendicular to the linear movement, the cooperation of the overhanging column 42 and the step 51 can provide a great constraint force for resisting closing for the driving part 5, thereby effectively ensuring that the circuit breaker is not accidentally closed in the plugging operation process.

The foregoing is a more detailed description of the present invention, taken in conjunction with the specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments shown and described. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims (11)

1. A plug-in circuit breaker, includes casing (6), button mechanism and operating device (9), and button mechanism includes button (2), and button (2) include button (21), and button mechanism drive operating device (9) carry out closing/separating brake, its characterized in that: the circuit breaker further comprises a linkage piece (3) arranged in the shell (6), wherein the linkage piece (3) is provided with a collision boss (31); when button (2) drive circuit breaker combined floodgate, conflict boss (31) of button mechanism drive linkage (3) stretch out outside casing (6), and button mechanism is spacing to linkage (3) make conflict boss (31) can not return in the casing, and when button (2) drive circuit breaker open brake, conflict boss (31) of linkage (3) return in the casing.

2. Plug-in circuit breaker according to claim 1, characterized in that: the button (2) further comprises an indicating piece (22) which is arranged in the button piece (21) and used for indicating the closing/opening state of the circuit breaker, when the button (2) drives the circuit breaker to open, the indicating piece (22) acts to indicate opening, and the linkage piece (3) is driven to enable the abutting lug boss (31) to return to the shell (6).

3. Plug-in circuit breaker according to claim 2, characterized in that: when the button (2) drives the breaker to be switched on, the indicating piece (22) acts to indicate the switch-on, and the abutting lug boss (31) of the driving linkage piece (3) extends out of the shell (6).

4. Plug-in circuit breaker according to claim 1, characterized in that: when the button (2) drives the breaker to be switched on, the button (2) drives the abutting lug boss (31) of the linkage piece (3) to extend out of the shell (6).

5. Plug-in circuit breaker according to claim 2, characterized in that: the linkage piece (3) is rotatably arranged on the shell (6), one end of the linkage piece is provided with a contact boss (31), and the other end of the linkage piece is provided with a linkage piece driving part (33) extending towards the button (2);

the indicating piece (22) comprises a rotating shaft (221), a display end surface (223) and a driving boss (222), an indicating part used as a switching-on and switching-off mark is arranged on the display end surface (223), a cavity type mounting hole (211) is arranged inside the button piece (21), and an observation window (212) communicated with the mounting hole (211) is arranged on the operation end surface of the button piece (21);

the indicating piece (22) is arranged in the mounting hole (211) of the button piece (21) through a rotating shaft (221) and can swing around the shaft, the swinging drives the indicating part on the display end surface (223) to move under the observation window (212), and the corresponding opening and closing state is displayed through the indicating part moving into the observation window (212);

when the button (2) moves into the shell (6) to drive the breaker to be switched on, the driving boss (222) of the indicating piece (22) is matched with the linkage piece driving part (33) of the linkage piece (3) to enable the indicating piece (22) to rotate, and the area, corresponding to the switching-on state, of the indicating part on the display end surface (223) corresponds to the observation window (212);

when the button (2) moves towards the outside of the shell (6) to drive the breaker to be opened, the driving boss (222) of the indicating piece (22) is matched with the linkage piece driving part (33), the indicating piece (22) rotates to enable the area, corresponding to the opening state, of the indicating part on the display end face (223) to correspond to the observation window (212), and the driving boss (222) drives the linkage piece (3) to rotate through the linkage piece driving part (33) to enable the abutting boss (31) of the linkage piece (3) to return into the shell.

6. Plug-in circuit breaker according to claim 5, characterized in that: when the button (2) moves into the shell (6) to drive the breaker to be switched on, the driving boss (222) of the indicating piece (22) is matched with the linkage piece driving part (33) of the linkage piece (3) to enable the indicating piece (22) to rotate and enable the linkage piece (3) to rotate, and the abutting boss (31) of the linkage piece (3) extends out of the shell (6).

7. Plug-in circuit breaker according to claim 2, characterized in that: the circuit breaker is characterized by further comprising a locking piece (4), wherein the locking piece (4) is installed in the shell (6) through an elastic piece, the locking piece (4) is provided with a locking boss (41), and when the circuit breaker is in a switching-off state, the elastic piece enables the locking boss (41) of the locking piece (4) to extend out of the shell (6);

be equipped with on linkage (3) and locking piece (4) complex unblock portion (34), after the circuit breaker separating brake, when button (2) moved outside casing (6), indicator (22) drive linkage (3) and rotate, and the unblock portion (34) of linkage (3) make locking boss (41) withdraw to in casing (6) the application of force to locking piece (4).

8. Plug-in circuit breaker according to claim 5, characterized in that: the driving boss (222) is provided with a left driven end (222b) and a right driven end (222a) at intervals, a linkage piece driving part (33) of the linkage piece (3) is bent towards one side of the button (2) and is located between the left driven end (222b) and the right driven end (222a), when the button (2) moves towards the shell (6) to drive the breaker to be switched on, the left driven end (222b) is matched with the linkage piece driving part (33) of the linkage piece (3), and when the button (2) moves towards the outside of the shell (6), the right driven end (222a) is matched with the linkage piece driving part (33) of the linkage piece (3).

9. Plug-in circuit breaker according to claim 7, characterized in that: the button mechanism comprises a button (2), a connecting rod (7) and a driving piece (5), the button (2) drives the driving piece (5) to act through the connecting rod (7), and the driving piece (5) is rotatably arranged in the shell (6) and is connected with the operating mechanism (9); locking piece (4) are installed in casing (6) through the rectilinear movement pair, and the direction perpendicular to circuit breaker's of its rectilinear movement installation direction of inserting, locking piece (4) are including stretching post (42) outward, and when the circuit breaker was in the combined floodgate state, the elastic component made locking boss (41) of locking piece (4) stretch out outside casing (6), and lateral surface (52) of driving piece (5) and outer post (42) of stretching of locking piece (4) support the cooperation and make locking piece (4) can not return to in casing (6).

10. Plug-in circuit breaker according to claim 7, characterized in that: the shell (6) is provided with a limiting hole (61), and the abutting lug boss (31) of the linkage piece (3) and the locking lug boss (41) of the locking piece (4) are matched with the same limiting hole (61).

11. Plug-in circuit breaker according to claim 1, characterized in that: conflict boss (31) are square boss, and the side of square boss both sides all is perpendicular to the installation of circuit breaker and inserts the direction.

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