CN211350496U - Plug-in circuit breaker - Google Patents

Abstract

The utility model provides an inserted circuit breaker, includes casing, button mechanism and operating device, and button mechanism drive operating device carries out combined floodgate/separating brake, and button mechanism has the combined floodgate position and the separating brake position corresponding with circuit breaker combined floodgate/separating brake state, is equipped with spacing hole on the casing, and this circuit breaker is still including setting up the locking piece in the casing, the locking piece is equipped with the locking boss that corresponds the setting with spacing hole, and when button mechanism is located the combined floodgate position, the locking boss of locking piece stretches out outside the casing, when applying withdrawal pressure for the locking piece and making locking boss withdrawal casing in, locking piece drive button mechanism drives the operating device separating brake, and when inserting the circuit breaker that will have combined floodgate into the cabinet internally, force the automatic separating brake of circuit breaker, avoid live operation, improve the security.

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 network, 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 conveniently plugged and pulled out like a plug and can be locked at the installation position, the novel circuit breaker is called as a plug-in circuit breaker, the use of 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 can meet the requirements of different electrical equipment on power quality, and the circuit breaker can be conveniently assembled in/disassembled from the circuit in a plugging mode.

The existing plug-in circuit breaker is usually provided with a locking device, a locking protrusion of the locking device extends out of a shell of the circuit breaker when the circuit breaker is in a switching-on state, so that the circuit breaker is prevented from being inserted or pulled out in the switching-on state, but because a sheet metal structure of an installation cabinet body of the circuit breaker has certain elasticity, if the insertion or pulling-out force is large, the circuit breaker can be still inserted or pulled out of the installation cabinet in the switching-on state, and the risk of live operation exists.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a plug-in circuit breaker that reliability is high.

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

The utility model provides an inserted circuit breaker, includes casing, button mechanism and operating device, and button mechanism drive operating device carries out combined floodgate/separating brake, and button mechanism has the combined floodgate position and the separating brake position corresponding with circuit breaker combined floodgate/separating brake state, is equipped with spacing hole on the casing, and this circuit breaker is still including setting up the locking piece in the casing, the locking piece is equipped with corresponds the locking boss that sets up with spacing hole, and when button mechanism is located the combined floodgate position, the locking boss of locking piece stretches out outside the casing, and when applying withdrawal pressure for the locking piece and making the locking boss withdrawal casing in, locking piece drive button mechanism drives the operating device separating brake.

Preferably, when the button mechanism is located at the opening position and the locking boss of the locking piece retracts into the shell, the locking piece is in abutting fit with the button mechanism to prevent the button mechanism from being switched from the opening position to the closing position.

Preferably, the locking member is mounted in the housing by a linear movement pair, and a direction of the linear movement is perpendicular to a mounting and inserting direction of the circuit breaker.

Preferably, when the button mechanism is located at the opening position, the locking boss of the locking member protrudes out of the housing, and the locking boss of the locking member can be pushed to retract into the housing by an external retraction force.

Preferably, the locking piece includes with spacing hole complex locking boss and with button mechanism complex outer post that stretches, the locking piece be close to spacing hole upper portion be equipped with the locking boss, be close to button mechanism's lower part be equipped with outer post that stretches.

Preferably, the button mechanism is provided with a driving part of the locking piece, and when the button mechanism is in the switching-on position, an outward extending column of the locking piece corresponds to the driving part of the locking piece; when the locking boss of the locking piece is extruded and retracted into the circuit breaker, the outward extending column of the locking piece is contacted with and pushes the driving part of the locking piece of the button mechanism to enable the button mechanism to act towards the opening direction, and the closed circuit breaker is automatically opened.

Preferably, the button mechanism is provided with a driving part of the locking piece, when the button mechanism is in the opening position, when the locking boss of the locking piece is extruded and retracted into the circuit breaker, the outward extending column of the locking piece moves to the closing direction of the driving part of the locking piece to be opposite to the driving part of the locking piece, and the button mechanism is limited to move towards the closing direction to prevent the circuit breaker from completing the closing action.

Preferably, button mechanism includes button and driving piece, and the button passes through the connecting rod and is connected with the driving piece drive, driving piece pivoted setting is in the casing, is connected with the operating device drive, be provided with locking piece drive division on the driving piece, when button mechanism is located the closing position, the outer post that stretches out of locking piece corresponds with the locking piece drive division, works as inside the locking boss of locking piece receives the extrusion withdrawal circuit breaker, makes the outer post contact of locking piece and promotes button mechanism's locking piece drive division messenger button mechanism and moves towards the separating brake direction, makes the automatic separating brake of circuit breaker of closing.

Preferably, the button mechanism comprises a button and a driving piece, the button is in driving connection with the driving piece through a connecting rod, and the driving piece is rotatably arranged in the shell and is in driving connection with the operating mechanism; the driving piece is provided with a locking piece driving part, the button mechanism is located at a switching-off position, when the locking boss of the locking piece is extruded and retracted into the circuit breaker, the outward extending column of the locking piece moves to the switching-on direction of the locking piece driving part to be opposite to the locking piece driving part, and the button mechanism is limited to move towards the switching-on direction to enable the circuit breaker not to complete the switching-on action.

Preferably, a spring is arranged between the locking piece and the shell, and the elastic force of the spring drives the locking boss of the locking piece to extend out of the shell.

Preferably, the push-button mechanism further comprises an unlocking member for driving the locking boss of the locking member to retract into the interior of the housing when the push-button mechanism is in the trip position.

Preferably, when the button mechanism is in the trip position, the button mechanism is pulled outward in a direction away from the circuit breaker, and the button mechanism drives the unlocking member to retract the locking boss of the locking member into the housing.

Preferably, the rotatory setting of deblocking piece is in the casing, the directional locking piece direction of deblocking piece be equipped with linkage deblocking portion complex linkage end on the locking piece, the other end of deblocking piece is a bending end, and button mechanism passes through in the locking boss withdrawal casing that bending end drive deblocking piece drove the locking piece.

Preferably, the button mechanism comprises a button, a connecting rod and a driving piece, the button is in driving connection with the driving piece through the connecting rod, the driving piece is in driving connection with the operating mechanism, the button comprises a button piece for operation and an indicating piece in the button piece, the indicating piece comprises a rotating shaft, a display end surface and a driving boss arranged on the rotating shaft, an indicating part used as a switching-on/off mark is arranged on the display end surface, a cavity type mounting hole is formed in the button piece, an observation window communicated with the mounting hole is formed in the operating end surface of the button piece, the indicating piece is installed 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 surface to move under the observation window, and the indicating part in the observation window is moved to display a corresponding switching-; the driving boss is exposed out of the button piece, the unlocking piece is provided with a corresponding bending end, the bending direction of the bending end faces to one side of the driving boss of the indicating piece, when the circuit breaker is switched on, the button moves into the shell, the driving boss is matched with the bending end to rotate the indicating piece, and the area of the indicating part on the display end face corresponding to the switching-on state corresponds to the observation window; after the circuit breaker is opened, the button pulls in the direction of keeping away from the circuit breaker, the drive boss drives the unlocking piece through the end of bending and rotates, and linkage end pair locking piece application of force makes the locking boss retract in the casing.

Preferably, the epaxial drive boss in pivot of indicator is gone up and is established left driven end b and right driven end a separately, and the end of bending of deblocking spare is located between left driven end b and the right driven end a to button one side bending, the circuit breaker back of separating brake, the button to the direction pulling of keeping away from the circuit breaker, the right driven end a of indicator and the end drive cooperation of bending of deblocking spare, when the circuit breaker closed, the driven end b of indicator and the end cooperation of bending of deblocking spare.

Preferably, the locking piece be close to the upper portion in spacing hole and be equipped with the locking boss, the lower part that is close to button mechanism is equipped with outer extending column, one side of locking boss is equipped with the linkage and unlocks the portion, the linkage unlocks the portion for setting up the recess that is close to one side of the unlocking piece at the locking piece.

The utility model discloses a plug-in circuit breaker works as the circuit breaker closes a floodgate before the installation, and button mechanism is located the switching-on position, inserts the rack with the circuit breaker again, and in the installation, withdrawal pressure is applyed to rack sheet metal component extrusion locking piece, makes the locking boss of locking piece retract in the casing, and locking piece driving button mechanism drives operating device separating brake simultaneously, avoids live-wire operation, improves the security. Current plug-in circuit breaker adopts locking device to realize preventing the circuit breaker from being extracted or inserting under the combined floodgate state through spacing mode usually, the utility model discloses the novelty through the drive cooperation of locking piece and button mechanism, when inserting the circuit breaker under the combined floodgate state, the locking piece drives button mechanism separating brake, adopts completely different technical scheme.

The utility model discloses a locking piece can also lock the button mechanism of circuit breaker, and when the circuit breaker did not correctly install to rack operating position, the unable closing motion of accomplishing of button mechanism only when the circuit breaker is installed to correct station, the normal divide-shut brake of button mechanism.

Drawings

Fig. 1 is a schematic structural diagram of the opening state of the plug-in circuit breaker of the present invention.

Fig. 2 is the utility model discloses a during the circuit breaker separating brake, the process chart of the rack of packing into, the rack operating position has not been installed to this moment yet.

Fig. 3 is a partially enlarged schematic view of the state of fig. 2 according to the present invention.

Fig. 4 is a schematic diagram of the circuit breaker of the present invention closing before installation, namely, the circuit breaker is to be installed in the cabinet.

Fig. 5 is a diagram of the circuit breaker of fig. 4 installed in a cabinet prior to installation in a cabinet operating position, with the locking member moved downwardly to urge the actuating member to rotate in a tripping direction.

Fig. 6 is a partially enlarged schematic view of the automatic opening action of the circuit breaker after the locking member 4 triggers the driving member to rotate past the dead point in fig. 5.

Fig. 7 is a schematic view of the indicator and unlocking member of the button mechanism and the related structure of the locking member in the open state, and the indicator in the button member is driven by the bent end of the unlocking member to rotate to display the open state.

Fig. 8 is an enlarged partial view of the open state, the indicator and the unlocking member engaged.

Fig. 9 is an enlarged partial schematic view of the closing position, the indicator member and the unlocking member engaged.

Figure 10 is a schematic view of the overall arrangement of the circuit breaker in an open position, with continued pulling of the button mechanism, and the unlocking member retracting the locking member within the housing to permit removal of the circuit breaker from the cabinet.

Detailed Description

The following description will further describe a specific embodiment of the plug-in circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 10. 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, the moving contact that links to each other with operating device 9, the static contact that sets up relatively with the moving contact, 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, spare part (not shown in the figure) that inlet wire connecting device 15 and other circuit breakers had, button mechanism drive operating device 9 drives the moving contact and closes a floodgate with the static contact, 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.

Still be equipped with locking device in the plug-in circuit breaker, be equipped with on casing 6 with the spacing hole 61 of locking device complex, be equipped with the spacing hole B0 of rack (refer to fig. 2) on the rack sheet metal component B of the plug-in circuit breaker inserted acceptor, 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 installation is not installed to the operating position, plug-in circuit breaker's spacing hole 61 misplaces with the spacing hole B0 of rack, rack sheet metal component B can shelter from the spacing hole B0 of rack, this is the prior art in this field, no longer describe herein.

As shown in fig. 1, the utility model discloses an embodiment of 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 triggers 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 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.

The utility model discloses an improvement point lies in, the circuit breaker still include with spacing hole 61 complex locking device, locking device is including setting up locking piece 4 in casing 6, locking piece 4 is equipped with the locking boss 41 that corresponds the setting with spacing hole 61, locking boss 41 can stretch out or retract spacing hole 61 from spacing hole 61 along with the circuit breaker mounted state, realizes respectively locking piece 4 stretch out and two operating position of withdrawal, when button mechanism is located the switching-on position, locking boss 41 of locking piece 4 stretches out outside casing 6, when applying withdrawal pressure for locking piece 4 and making locking boss 41 retract casing 6 in, locking piece 4 drive button mechanism drives 9 separating brake of operating device.

As shown in fig. 4-6, when the circuit breaker is switched on before installation, the button mechanism is located at the switch-on position, and then the circuit breaker is inserted into the cabinet, during installation, the cabinet sheet metal part B extrudes the locking piece 4 to apply retraction pressure, so that the locking boss 41 of the locking piece 4 is retracted into the shell, and meanwhile, the locking piece 4 drives the button mechanism to drive the operating mechanism 9 to be switched off, thereby avoiding live operation and improving safety. Current plug-in circuit breaker adopts locking device to realize preventing the circuit breaker from being extracted or inserting under the combined floodgate state through spacing mode usually, the utility model discloses the innovative drive cooperation through locking piece 4 and button mechanism, when inserting the circuit breaker under the combined floodgate state, 4 drive button mechanism separating brake of locking piece adopt completely different technical scheme.

Further, as shown in fig. 2-3, when the button mechanism is located at the switch-off position, and the locking boss 41 of the locking member 4 retracts into the housing 6, the locking member 4 is in abutting fit with the button mechanism, the locking member 4 limits the button mechanism to drive the operating mechanism 9 to switch on in the switch-on direction, and prevents the button mechanism from switching from the switch-off position to the switch-on position, so that the plug-in circuit breaker cannot be switched on when being installed at the working position in the cabinet, and the button 2 cannot be pressed in place, thereby avoiding live-line operation. One solution of the locking member 4 is that as long as the button mechanism is in the trip position, the locking boss 41 of the locking member 4 is retracted into the housing 6, so that the circuit breaker can be normally inserted into and removed from the cabinet. As another preferable scheme of the locking member 4, when the button mechanism is located at the opening position, the locking boss 41 of the locking member 4 extends out of the housing 6, and the locking boss 41 of the locking member 4 can be pushed by an external retraction force to retract into the housing 6 (the locking member 4 is not retracted only by a horizontal force, and a vertical component force in the retraction direction is required), that is, the circuit breaker is not prevented from being inserted into the cabinet in the opening state, and the circuit breaker can be protected from falling out of the cabinet due to shock during transportation or the like.

In the preferred embodiment shown in fig. 1, the locking member 4 includes a locking boss 41 engaged with the position-limiting hole 61 and an outward extending column 42 engaged with the button mechanism, the locking boss 41 is provided on the upper portion of the locking member 4 near the position-limiting hole 61, and the outward extending column 42 is provided on the lower portion near the button mechanism. The button mechanism is provided with a locking piece driving part 51, and when the button mechanism is in the switching-on position, the outward extending column 42 of the locking piece 4 corresponds to the locking piece driving part 51; when the closed circuit breaker is inserted into the cabinet, when the locking boss 41 of the locking piece 4 is pressed and retracted into the interior of the circuit breaker when being installed in the cabinet, the downward movement of the locking piece 4 causes the outward extending column 42 of the locking piece 4 to press and contact the locking piece driving part 51 of the button mechanism, and the locking piece driving part 51 of the button mechanism is contacted and pushed to cause the button mechanism to act towards the opening direction, so that the closed circuit breaker is automatically opened. When button mechanism is in the position of separating brake, the circuit breaker inserts the rack, when the circuit breaker did not install to rack operating position, locking boss 41 of locking piece 4 receive the extrusion retraction circuit breaker inside, the outer post 42 that stretches of locking piece 4 removes to locking piece drive division 51's the combined floodgate direction on relative with button mechanism's locking piece drive division 51, stretch the post 42 outward and contradict with locking piece drive division 51 on button mechanism's combined floodgate direction, restriction button mechanism makes the circuit breaker can not accomplish the action of closing a floodgate to the action of combined floodgate direction.

Preferably, the button mechanism comprises a button 2 and a driving member 5, the button 2 is in driving connection with the driving member 5 through a connecting rod 7, the driving member 5 is rotatably arranged in the housing 6 and is in driving connection with the operating mechanism 9, and the locking member driving part 51 is arranged on the driving member 5. Preferably, the locking member driving portion 51 is a slope provided on the outer side wall of the driving member 5. When the button mechanism is located at the closing position, the outward extending column 42 of the locking piece 4 corresponds to the driving part 51 of the locking piece, and when the locking boss 41 of the locking piece 4 is pressed and retracted into the interior of the circuit breaker, the outward extending column 42 of the locking piece 4 contacts and pushes the driving part 51 of the locking piece of the button mechanism to make the button mechanism move towards the opening direction, so that the closed circuit breaker automatically opens. The button mechanism is located at the opening position, when the locking boss 41 of the locking piece 4 is pressed and retracted into the circuit breaker, the extending column 42 of the locking piece 4 moves to the closing direction of the locking piece driving part 51 to be opposite to the locking piece driving part 51, and the action of the button mechanism towards the closing direction is limited, so that the circuit breaker can not complete the closing action.

Specifically, as shown in fig. 4-5, when the circuit breaker is closed before being installed, the button mechanism and the driving member 5 are both in their closing positions, and then installed in the cabinet, the locking boss 41 of the locking member 4 is pressed into the interior of the circuit breaker by the cabinet, the extended post 42 of the locking member 4 is driven to move toward the interior of the circuit breaker, and it contacts and pushes the locking member driving portion 51 of the driving member 5 in its closing position to rotate in the direction opposite to the closing rotation direction. Fig. 6 is a partially enlarged schematic view of the operating mechanism of fig. 4 and 5 in a structural state in which the opening operation can be realized after the driving member 5 rotates past the dead point. As shown in fig. 6, the driving member 5 continues to rotate in the opening direction to the dead point position where the U-shaped rod 8 is disengaged from the operating mechanism under the action of the spring force (spring of the driving member, not shown), and the driving member 5 completely disengages from the opening position only after the outward extending column 42 of the locking member 4 disengages from the locking member driving portion 51 of the driving member 5 and the driving member 5 of the circuit breaker continues to be pushed by the spring force to rotate to the dead point position where the U-shaped rod 8 disengages from the operating mechanism, so that the operating mechanism 9 can perform the opening operation to ensure that the circuit breaker is inserted in the opening state. In other words, the button mechanism is allowed to complete the closing action only when the circuit breaker is inserted to its correct mounting position and in the open state.

As shown in fig. 2-3, when the circuit breaker is not installed at the working position, the locking boss 41 is changed from the extended state to be pressed into the circuit breaker by the cabinet as shown in fig. 3, if the button 2 of the circuit breaker is pressed at this time, and the locking piece driving portion 51 to which the driving piece 5 is rotated is pressed by the extended post 42 on the locking piece 4 to realize interference contact, the driving piece 5 is resisted by the extended post 42 and cannot rotate continuously to the switching-on position of the operating mechanism 9, because the rotating angle of the driving piece 5 is smaller than the rotating angle required for enabling the operating mechanism 9 to reach the switching-on position at this time, so that the button mechanism cannot complete the switching-on stroke, and the circuit breaker cannot complete the switching-. Even if the driving member 5 is deviated to the closing direction at this time, the outward extending column 42 on the locking member 4 contacts the driving portion 51 of the locking member on the driving member 5 to form an interference press and push the driving member 5 to rotate only in the opening direction, thereby limiting the driving member 5 from continuing to rotate to the position where the operating mechanism 9 is closed.

Locking piece 4 and driving piece 5 cooperation in this embodiment, locking piece drive division 51 sets up on driving piece 5, and during the installation of circuit breaker combined floodgate, locking piece 4 can trigger the rotation that driving piece 5 made the circuit breaker switch to the separating brake state from closing the floodgate state, can spacing driving piece 5's rotation in the installation, make the circuit breaker can not switch to closing the state from separating brake state. Of course, the locking member driving part 51 may be disposed on the button 2 or the link 7, the locking member 4 may be engaged with the button 2 or the link 7, and the locking member driving part 51 may be a boss or a notch disposed on the button 2 or a hook extending from the link 7. For example, when the button mechanism is located at the switching-on position and the locking boss 41 of the locking piece 4 is extruded and retracted into the circuit breaker, the outward extending column 42 rotates to drive the boss or the clamping groove on the button 2, so that the button 2 moves towards the switching-off direction, and the switched-on circuit breaker is automatically switched off; the button mechanism is located at a switching-off position, and when the locking boss 41 of the locking piece 4 is extruded and retracted into the circuit breaker, the button mechanism is in limit fit with the boss or the clamping groove on the button 2, so that the button mechanism is prevented from acting towards the switching-on direction to enable the circuit breaker not to complete the switching-on action.

It can be seen, a characteristic of the utility model is that, when the circuit breaker is not installed to operating position or circuit breaker and is in the combined floodgate state, because the mutual crimping of the locking piece drive division 51 of the post 42 of stretching out on the locking piece 4 and driving piece 5 has formed the resistance spacing to driving piece 5, though the circuit breaker can insert the action like this, but can ensure to accomplish the automatic separating brake of the circuit breaker of combined floodgate action or having combined floodgate at the unable push button mechanism of in-process of inserting according to the time, only after driving piece 5 turned over the dead point, operating device's driving piece 5 just is by the unblock, with this electrified the inserting of circuit breaker under the combined floodgate state of having avoided.

As shown in fig. 1 and 10, the locking member 4 has a locking boss 41 near the upper portion of the limiting hole 61, and an outward extending column 42 near the lower portion of the button mechanism. Preferably, the locking member 4 is installed in the housing 6 through a linear moving pair, the linear moving direction of the locking member is perpendicular to the installation and insertion direction of the circuit breaker, and the locking member 4 linearly moves along the direction perpendicular to the installation and insertion direction a, so that the forced deformation and/or the micro-displacement of the locking member 4 and the cabinet sheet metal part inserted into the receptor can be effectively prevented or reduced. Casing 6 on be equipped with the locking piece groove of installation locking piece 4, locking piece 4 and locking piece groove sliding fit, locking piece 4 set up between button mechanism and spacing hole 61 be provided with the elastic component between locking piece 4 and the casing 6, the elastic component is spring 10, its elasticity orders about locking boss 41 of locking piece 4 to stretch out outside casing 6, as shown in fig. 7, spring 10 is used in the downside of locking piece 4, when the circuit breaker was in rack operating position, locking boss 41 stretches out outside casing 6, locking boss 41 supports to keep off with the lateral wall of the spacing hole B0 of rack and prevents that the circuit breaker from shifting out in the direction that the circuit breaker shifted out the rack. Preferably, the section of the locking boss 41 of the locking member 4 is a right trapezoid or a right triangle, and the locking boss 41 includes a straight surface and an inclined surface of the side wall of the vertical limiting hole 61, the straight surface faces the direction in which the cabinet is pulled out of the circuit breaker, and the inclined surface faces the direction in which the cabinet is inserted into the circuit breaker, so that the circuit breaker is effectively prevented from being moved out, and the circuit breaker is not blocked from being inserted into the cabinet in the opening state.

Further preferably, the circuit breaker further comprises an unlocking piece 3, when the button mechanism is in the switching-on position, the locking piece 4 corresponds to the locking piece driving part 51 of the button mechanism, and is in mutual interference fit, when the button mechanism is in the switching-off position, the locking piece 4 and the button mechanism are released from mutual interference, the unlocking piece 3 is used for driving the locking boss 41 of the locking piece 4 to retract into the shell, and when the circuit breaker is in the working position of the cabinet, the circuit breaker can be pulled out from the cabinet. Preferably, the unlocking member 3 is driven by the button mechanism to retract the locking boss 41 of the locking member 4 into the inside of the case, and when the button mechanism is in the opening position, the button mechanism is pulled outward in a direction away from the circuit breaker, and the button mechanism drives the unlocking member 3 to retract the locking boss 41 of the locking member 4 into the inside of the case by the unlocking member 3.

As shown in fig. 1 and 10, the unlocking piece 3 is rotatably disposed in the housing 6, the unlocking piece 3 is provided with a linkage end 31 which is matched with a linkage unlocking portion 43 on the locking piece 4 in a direction pointing to the locking piece 4, the linkage unlocking portion 43 is a groove disposed on one side of the locking piece 4 close to the unlocking piece 3, the linkage end 31 is inserted into the groove of the linkage unlocking portion 43, and the linkage end 31 is disposed in the linkage unlocking portion 43 on the locking piece 4 and can be overlapped with the linkage unlocking portion 43; the other end of the unlocking piece 3 is a bending end 32, and the button mechanism drives the unlocking piece 3 to drive the locking piece 4 to retract through the bending end 32.

Specifically, button mechanism includes button 2, driving piece 5, and this embodiment drives the end 32 of bending of deblocking piece 3 through button 2, button 2 sets up in deblocking piece 3 below, and driving piece 5 sets up in locking piece 4 below, and locking piece 4 is located deblocking piece 3 right side, the directional 4 directions of locking piece of deblocking piece 3 are equipped with elongated linkage end 31, linkage end 31 sets up in the recess of linkage deblocking portion 43 on the locking piece. Locking piece 4 upper portion that is close to spacing hole 61 be equipped with locking boss 41, the lower part that is close to button mechanism is equipped with outer stretching post 42, one side of locking boss 41 is equipped with linkage unlocking part 43, be equipped with on the linkage unlocking part 43 with the linkage end 31 complex recess of unlocking piece 3, certainly also can not adopt the recess, and adopt the cooperation mode of breach step, adopt the recess to make when locking piece 4 receives the pressure retraction of rack, the top surface of recess makes unlocking piece 3 rotatory, the clockwise perk of end 32 of bending, the boss 222 of giving the button steps, button 2 can outwards remove, behind the circuit breaker separating brake, outside pulling button, unlocking piece 3 clockwise rotation, the bottom surface of recess is pressed downwards to linkage end 31, make locking piece 4 retract. When the button mechanism is in the opening position, the button 2 is pulled outwards in the direction away from the circuit breaker, the unlocking piece 3 is rotated clockwise by the button 2 through the bending end 32, and the locking piece 4 is driven by the linkage end 31 through the linkage unlocking piece 43 to retract into the shell by overcoming the elasticity of the elastic piece.

As another embodiment of the present invention, the locking member 4 and the unlocking member 3 may be an integrated structure, the integrated structure is rotatably installed in the housing 6, one end of the unlocking member 3 is provided with a bending end 32 engaged with the button mechanism, the locking member 4 is provided with a locking boss 41 and an extending post 42, the locking boss 41 extends out of the limiting hole 61 when the integrated structure is driven to rotate by an elastic member, and the elastic member may be a compression spring, a torsion spring or a leaf spring.

One solution is that the button 2 is provided with a driving protrusion or groove which is matched with the bent end 32 to pull the bent end 32 of the unlocking piece 3. In a preferred embodiment, the button 2 of the button mechanism comprises a button member 21 and an indicator member 22, and the indicator member 22 is matched with the unlocking member 3 to simultaneously realize switching-on and switching-off indication and drive the locking boss 41 of the locking member 4 to retract into the shell 6.

The indicating member 22 comprises a rotating shaft 221, a display end surface 223 and a driving boss 222 arranged on the rotating shaft 221, an indicating part used as a switching-on/off identification is arranged on the display end surface 223, a corresponding color block or character used as a switching-on/off identification is arranged on the indicating part, a cavity type mounting hole 211 is arranged inside the button member 21, an observation window 212 communicated with the mounting hole 211 is arranged on the operation end surface of the button member 21, the indicating member 22 is arranged in the mounting hole 211 of the button member 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; the driving boss 222 is exposed outside the button 21, the unlocking part 3 is provided with a corresponding bending end 32, the bending direction of the bending end 32 faces to one side of the driving boss 222 of the indicator 22, when the circuit breaker is closed, the button 2 moves into the shell 6, the driving boss 222 is matched with the bending end 32 to rotate the indicator 22, and the area of the indicating part corresponding to the closing state on the display end surface 223 corresponds to the observation window 212; after the circuit breaker is opened, the button 2 is pulled in the direction away from the circuit breaker, the driving boss 222 drives the unlocking piece 3 to rotate through the bending end 32, and the linkage end 31 applies force to the locking piece 4 to enable the locking piece 4 to retract into the shell 6.

As shown in fig. 8-9, the driving boss 222 on the rotating shaft 221 of the indicator 22 is provided with a left driven end 222b and a right driven end 222a, and the bent end 32 of the unlocking member 3 is bent toward the button 2 and located between the left driven end 222b and the right driven end 222 a. As shown in fig. 9, when the button 2 performs a closing operation to the inside of the circuit breaker, the inclined surface of the left passive end 222b of the indicator 22 contacts with the bent end 32 of the unlocking piece 3 and is rotated counterclockwise by the resistance of the bent end 32 of the unlocking piece 3, so that the operator can see the area of the indicating part corresponding to the closing state in the observation window 212, and the corresponding color mark representing the closing at this time of the opening and closing mark displayed by the indicating part. As shown in fig. 8, when the button 2 is pulled in a direction away from the circuit breaker to perform a switching-off operation, when the circuit breaker is switched off, the bent end 32 is located between the left driven end 222b and the right driven end 222a, the inner inclined surface of the right driven end 222a contacts the right side of the bent end 32, a force is generated to rotate the indicator clockwise around the rotating shaft, the indicator in the button 21 is driven by the bent end 32 of the unlocking piece 3 to rotatably display the switching-off, a region of the indicating part corresponding to the switching-off state can be seen in the observation window 212, and the color mark representing the switching-off corresponding to the switching-on/off mark displayed by the indicating part at this time. After the circuit breaker is opened, when the circuit breaker needs to be removed from the installation cabinet, as shown in fig. 10, when the circuit breaker is in an opening state, the button 2 is continuously pulled in a direction away from the circuit breaker, so that the right driven end 222a of the indicating member 22 acts on the lower end face of the bending end 32 of the unlocking member 3, the unlocking member 3 is forced to rotate clockwise around the shaft to drive the linkage end 31 of the unlocking member to act on the linkage unlocking part 43 of the locking member 4, the locking boss 41 of the locking member 4 retracts into the circuit breaker, and the circuit breaker can be safely removed from the working position of the cabinet.

The utility model discloses an above-mentioned problem of prior art has been solved ingeniously to bayonet circuit breaker, locking piece 4 be double locking device, adopt the simplified structural design that can't realize closing a floodgate to replace and stretch out and can not retract and unable male structural design through the locking piece, a protection device not only can realize duplicate protection function simultaneously to the protection is reliable more. The locking member 4 has two working positions of extension and retraction, and mainly has the following locking protection functions:

firstly, when the circuit breaker is in a closing state before installation, the locking piece 4 presses and forcibly pushes the button mechanism, so that the circuit breaker can be automatically opened.

Secondly, when the circuit breaker is not correctly installed to the cabinet working position, when the locking piece 4 is retracted into the shell 6 by the extrusion force applied by the cabinet, the locking piece 4 limits the button mechanism, and the circuit breaker cannot be closed by force.

Thirdly, when the breaker is installed at the correct working position of the cabinet and is in a closing working state, the locking boss 41 of the locking member 4 extends out of the limiting hole 61 to lock the breaker at the working position thereof, so that the closing is prevented from being pulled out.

Fourthly, when the circuit breaker is in the opening state, the locking boss 41 of the locking piece 4 extends out of the limiting hole 61, so that the circuit breaker is prevented from falling out of the cabinet due to the fact that vibration is received in the transportation process and the like.

Fifthly, when the circuit breaker is in a switching-off state, the button mechanism is pulled, and the unlocking piece 3 drives the locking piece 4 to enable the locking boss 41 to retract into the shell 6, so that the circuit breaker can be easily plugged and pulled out.

Sixthly, the unlocking piece 3 is matched with the indicating piece 22 in the button 2 at the same time, so that the indicating piece plays a role of indicating the opening and closing state of the circuit breaker.

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 (16)

1. The utility model provides an inserted circuit breaker, includes casing (6), button mechanism and operating device (9), and button mechanism drive operating device (9) carry out combined floodgate/separating brake, and button mechanism has the corresponding combined floodgate position and the separating brake position of state with circuit breaker combined floodgate/separating brake, is equipped with spacing hole (61) on casing (6), its characterized in that: this circuit breaker is still including setting up locking piece (4) in casing (6), locking piece (4) are equipped with and correspond locking boss (41) that set up with spacing hole (61), and when button mechanism was located the switching-on position, locking boss (41) of locking piece (4) stretched out outside casing (6), and when applying withdrawal pressure for locking piece (4) and making locking boss (41) withdraw in casing (6), locking piece (4) drive button mechanism drives operating device (9) and opens the floodgate.

2. Plug-in circuit breaker according to claim 1, characterized in that: when the button mechanism is located at the opening position and the locking boss (41) of the locking piece (4) retracts into the shell (6), the locking piece (4) is in abutting fit with the button mechanism to prevent the button mechanism from being switched from the opening position to the closing position.

3. Plug-in circuit breaker according to claim 1, characterized in that: the locking piece (4) is installed in the shell (6) through a linear moving pair, and the linear moving direction of the locking piece is perpendicular to the installation and insertion direction of the circuit breaker.

4. Plug-in circuit breaker according to claim 1, characterized in that: when the button mechanism is located at the opening position, the locking boss (41) of the locking piece (4) extends out of the shell (6), and the locking boss (41) of the locking piece (4) can be pushed to retract into the shell (6) by retraction external force.

5. Plug-in circuit breaker according to claim 1, characterized in that: locking piece (4) including with spacing hole (61) complex locking boss (41) and with button mechanism complex stretch out post (42) outward, locking piece (4) be close to the upper portion of spacing hole (61) and be equipped with locking boss (41), be close to button mechanism's lower part and be equipped with and stretch out post (42) outward.

6. Plug-in circuit breaker according to claim 5, characterized in that: the button mechanism is provided with a locking piece driving part (51), and when the button mechanism is positioned at the switching-on position of the button mechanism, the outward extending column (42) of the locking piece (4) corresponds to the locking piece driving part (51); when the locking boss (41) of the locking piece (4) is squeezed to retract into the circuit breaker, the outward extending column (42) of the locking piece (4) is made to contact and push the locking piece driving part (51) of the button mechanism to make the button mechanism move towards the opening direction, so that the closed circuit breaker is automatically opened.

7. Plug-in circuit breaker according to claim 5, characterized in that: the button mechanism is provided with a locking piece driving part (51), when the button mechanism is located at a switching-off position, when the locking boss (41) of the locking piece (4) is extruded and retracted into the circuit breaker, the outward extending column (42) of the locking piece (4) moves to the switching-on direction of the locking piece driving part (51) to be opposite to the locking piece driving part (51), and the button mechanism is limited to move towards the switching-on direction to enable the circuit breaker not to complete the switching-on action.

8. Plug-in circuit breaker according to claim 5, characterized in that: button mechanism includes button (2) and driving piece (5), and button (2) are connected with driving piece (5) drive through connecting rod (7), driving piece (5) pivoted setting is in casing (6), is connected with operating device (9) drive, be provided with locking piece drive division (51) on driving piece (5), when button mechanism is located the closing position, the outer post (42) and the locking piece drive division (51) of locking piece (4) correspond, work as inside locking boss (41) of locking piece (4) are extrudeed withdrawal circuit breaker, make the outer post (42) contact of locking piece (4) and promote button mechanism's locking piece drive division (51) and make button mechanism move towards the separating brake direction, make the automatic separating brake of circuit breaker that has closed.

9. Plug-in circuit breaker according to claim 5, characterized in that: the button mechanism comprises a button (2) and a driving part (5), the button (2) is in driving connection with the driving part (5) through a connecting rod (7), and the driving part (5) is rotatably arranged in the shell (6) and is in driving connection with the operating mechanism (9); be provided with locking piece drive division (51) on driving piece (5), button mechanism is located the position of separating the floodgate, works as locking boss (41) of locking piece (4) receive the extrusion and withdraw inside the circuit breaker, the post (42) that stretches out of locking piece (4) move on the combined floodgate direction of locking piece drive division (51) relative with locking piece drive division (51), restriction button mechanism makes the circuit breaker can not accomplish the action of closing a floodgate to the action of combined floodgate direction.

10. Plug-in circuit breaker according to claim 1, characterized in that a spring (10) is arranged between the locking element (4) and the housing (6), the spring force of which urges the locking projection (41) of the locking element (4) out of the housing (6).

11. Plug-in circuit breaker according to claim 1, characterized in that: the unlocking piece (3) is further included, and when the button mechanism is in the opening position, the unlocking piece (3) is used for driving the locking boss (41) of the locking piece (4) to retract into the shell.

12. A plug-in circuit breaker according to claim 11, characterized in that: when the button mechanism is in the opening position, the button mechanism is pulled outwards in the direction away from the circuit breaker, the button mechanism drives the unlocking piece (3), and the unlocking piece (3) drives the locking boss (41) of the locking piece (4) to retract into the shell.

13. Plug-in circuit breaker according to claim 12, characterized in that: unlocking piece (3) rotation sets up in casing (6), unlocking piece (3) directional locking piece (4) direction be equipped with linkage unlocking part (43) complex linkage end (31) on locking piece (4), the other end of unlocking piece (3) is a bending end (32), and button mechanism passes through bending end (32) drive unlocking piece (3) drive locking boss (41) the withdrawal casing of locking piece (4) in.

14. The plug-in circuit breaker according to claim 13, characterized in that: the button mechanism comprises a button (2), a connecting rod (7) and a driving part (5), the button (2) is in driving connection with the driving part (5) through the connecting rod (7), the driving part (5) is in driving connection with an operating mechanism (9), the button (2) comprises a button part (21) for operation and an indicating part (22) in the button part (21), 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), 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 formed in the button part (21), an observation window (212) communicated with the mounting hole (211) is formed in the operation end surface of the button part (21), the indicating part (22) is installed in the mounting hole (211) of the button part (21) through the rotating shaft (221) and can swing around the shaft, the swing drives an indicating part on the display end surface (223) to move under the observation window (212), and the indicating part moving into the observation window (212) displays the corresponding opening and closing state; the driving boss (222) is exposed out of the button piece (21), the unlocking piece (3) is provided with a corresponding bending end (32), the bending direction of the bending end (32) faces to one side of the driving boss (222) of the indicating piece (22), when the circuit breaker is switched on, the button (2) moves in the shell (6), the driving boss (222) is matched with the bending end (32) to enable the indicating piece (22) to rotate, and the area of the indicating part on the display end surface (223) corresponding to the switching-on state corresponds to the observation window (212); after the circuit breaker is opened, the button (2) pulls in the direction of keeping away from the circuit breaker, the drive boss (222) drives the unlocking piece (3) to rotate through the bending end (32), and the linkage end (31) applies force to the locking piece (4) to enable the locking boss (41) to retract into the shell.

15. The plug-in circuit breaker according to claim 14, characterized in that: the utility model discloses a circuit breaker, including indicator (22), drive boss (222) on pivot (221) of indicator (22) go up to divide and establish left passive end (222b) and right passive end (222a), the end of bending (32) of deblocking piece (3) are located between left passive end (222b) and right passive end (222a) to button (2) one side bending, behind the circuit breaker separating brake, button (2) to the direction pulling of keeping away from the circuit breaker, the end of bending (32) drive cooperation of right passive end (222a) of indicator (22) and deblocking piece (3), when the circuit breaker closed, the end of bending (32) cooperation of passive end (222b) and deblocking piece (3) of indicator (22).

16. The plug-in circuit breaker according to claim 13, characterized in that: locking piece (4) upper portion that is close to spacing hole (61) be equipped with locking boss (41), the lower part that is close to button mechanism is equipped with outer post (42) that stretches out, one side of locking boss (41) is equipped with linkage unlocking part (43), linkage unlocking part (43) for setting up the recess that is close to unlocking part (3) one side in locking piece (4).

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