CN215869170U - Plug-in circuit breaker - Google Patents

Abstract

The utility model provides a plug-in circuit breaker, includes the shell, is equipped with button mechanism and first wiring mouth in the one end of shell, is equipped with second wiring mouth at the other end of shell, is equipped with locking mechanical system in the shell, is equipped with the through-hole on one side lateral wall of shell, is equipped with the operation window in the one end that the shell was equipped with button mechanism, locking mechanical system includes manual operation portion and has the locking piece of locking end, manual operation portion corresponds with operation window, makes the locking end of locking piece stretch out the shell through the through-hole or retract in the shell through stirring manual operation portion. The locking mechanism can be manually operated from the outside, an operation window is arranged at one end of the shell, and the locking piece is extended out of the shell or retracted into the shell by poking the manual operation part, so that the locking and unlocking states of the locking mechanism can be switched, and meanwhile, whether the locking mechanism is in the locking state or not can be judged from the operation window.

Description

Plug-in circuit breaker

Technical Field

The utility model relates to the field of low-voltage electrical appliances, in particular to a plug-in circuit breaker.

Background

The circuit breaker is a switching device capable of closing, carrying and breaking a current under a normal circuit condition and closing, carrying and breaking a current under an abnormal circuit condition within a prescribed time, and is generally classified into a plug-in type, a fixed type and a drawer type circuit breaker according to its installation manner.

The plug-in circuit breaker is usually used in the communication industry, the plug-in circuit breaker needs to be assembled inside a cabinet and is matched with a mechanism through a locking mechanism, so that the plug-in circuit breaker needs to meet the requirements that the plug-in circuit breaker cannot be inserted into the cabinet when being switched on, the plug-in circuit breaker is not installed in place and is not allowed to be switched on, and the plug-in circuit breaker is assembled in the cabinet and is not allowed to be separated.

Disclosure of Invention

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

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

the utility model provides a plug-in circuit breaker, includes the shell, is equipped with button mechanism and first wiring mouth in the one end of shell, is equipped with second wiring mouth at the other end of shell, is equipped with locking mechanical system in the shell, is equipped with the through-hole on one side lateral wall of shell, is equipped with the operation window in the one end that the shell was equipped with button mechanism, locking mechanical system includes manual operation portion and has the locking piece of locking end, manual operation portion corresponds with operation window, makes the locking end of locking piece stretch out the shell through the through-hole or retract in the shell through stirring manual operation portion.

Further, locking mechanical system sets up along pressing close to the inside wall of shell, and the operation window is located between the operation mouth of and the one side inside wall of shell of first wiring mouth complex.

Furthermore, locking mechanical system is including stirring the lever and by stirring lever drive's locking piece, when stirring the lever, stirs the lever and sets up the cooperation portion joint in the shell, makes the locking end of locking piece maintain the state of stretching out the shell or retracting into the shell.

Further, stir lever rotation assembly, the locking piece sets up along perpendicular to button mechanism's direction, and the one end of stirring the lever is equipped with the manual operation portion that corresponds with the operation window, stir the other end of lever be equipped with drive division and with the spacing portion of cooperation portion joint, the one end of locking piece be equipped with drive division complex effect portion, the other end of locking piece is as the locking end.

Further, the one end of shell be equipped with the button hole with first wiring mouth be equipped with the division board in the shell, be equipped with in the middle part of division board and keep away the groove with the operating window is corresponding, keep away and be equipped with the connecting axle between groove and the operating window, keep away the groove and split into the division board and divide into respectively with button hole, first wiring mouth relative first partition portion, second partition portion be equipped with the cooperation portion on first partition portion and/or the second partition portion, be equipped with the through-hole at the shell lateral wall between first partition portion and the button hole.

Furthermore, the poking lever is integrally of a rod body structure, a groove serving as a manual operation portion is formed in the end portion of one end of the poking lever, a connecting hole is formed in the middle of the poking lever, and the connecting hole is in rotating fit with the connecting shaft and serves as a rotating fulcrum of the poking lever.

Furthermore, a protruding structure serving as a limiting part is arranged on the outer side wall of the opening of the U-shaped groove in a protruding mode, a groove structure serving as a matching part is arranged in the area, close to the avoidance groove, of the first separating part, and the limiting part and the matching part are connected in a clamping mode to enable the locking mechanism to be kept in a locking state that the locking end extends out of the shell.

Further, the other end bending of stirring the lever forms the U-shaped groove of button mechanism dorsad, the U-shaped groove is as the cooperation of drive division confession effect portion and stretches into, and the protrusion is equipped with the protruding structure as spacing portion on the adjacent U-shaped groove open-ended lateral wall in U-shaped groove, and the region that is close to the groove of dodging in second partition portion is equipped with the groove structure as the cooperation portion, makes locking mechanical system keep the unblock state in the locking end retraction shell through spacing portion and cooperation portion joint.

Further, stir the other end of lever and seted up the circular recess, the circular recess rotates with the effect portion as the drive division to be connected, sets up and includes first arch and second arch in the spacing portion of stirring the lever other end, is equipped with first recess and second recess respectively in the adjacent region of dodging the groove of first partition part and second partition part, when stirring the lever around the fulcrum rotation, when first arch and first recess joint cooperate, locking mechanical system keeps stretching out the locking state outside the shell at the locking end, when the second is protruding to cooperate with second recess joint, locking mechanical system keeps the unblock state in the locking end retraction shell.

Further, the locking piece includes the connecting plate the protrusion is equipped with the column arch as the effect portion on the face of connecting plate one end, is equipped with the baffle of perpendicular to face at the other end of connecting plate the baffle deviates from the one end protrusion of effect portion and is equipped with the boss structure as the locking end.

Further, the locking mechanism further comprises a return spring for providing a return force to the locking member.

The locking mechanism can be manually operated from the outside, an operation window is arranged at one end of the shell, the locking mechanism comprises a manual operation part corresponding to the operation window, the locking mechanism can be operated from the outside, and the locking piece can extend out of the shell or retract into the shell by poking the manual operation part independently from the button mechanism and the operation mechanism, so that the locking and unlocking states of the locking mechanism can be switched, and meanwhile, whether the locking mechanism is in the locking state or not can be judged from the operation window.

In addition, through the cooperation portion with stirring lever joint, make the locking piece maintain the locking state who stretches out the shell or the unblock state of retraction shell for the user can adjust locking mechanical system's state as required, and maintain the state in needs, the locking of the circuit breaker transport state of being convenient for, the locking after assembling the rack to and the unblock when pulling out.

In addition, the locking mechanism is arranged along the inner wall close to the shell, so that the locking mechanism is matched with the shell, particularly, the partition plate is arranged in the shell to separate the locking mechanism from other action mechanisms of the circuit breaker, and the interference on the normal operation of the other action mechanisms is avoided.

In addition, the toggle lever and the locking piece of the locking mechanism have simple, flexible and changeable structures and wide application range.

Drawings

Fig. 1 is an external schematic view of a plug-in circuit breaker of the present invention;

fig. 2 is an exploded schematic view (first embodiment) of a plug-in circuit breaker of the present invention including a locking mechanism;

fig. 3 is a schematic structural view (first embodiment) of a locking mechanism in a locking state in a plug-in type circuit breaker of the present invention;

fig. 4 is a schematic structural view (first embodiment) of a locking mechanism in a locking state in a plug-in type circuit breaker of the present invention;

fig. 5 is a schematic structural view (first embodiment) of a locking mechanism in an unlocked state in a plug-in type circuit breaker of the present invention;

FIG. 6 is a front view of FIG. 5;

fig. 7 is a schematic structural view (first embodiment) of a locking mechanism in an unlocked state in a plug-in type circuit breaker of the present invention;

FIG. 8 is an enlarged view of portion A of FIG. 7;

fig. 9 is a schematic structural view of a case in a plug-in type circuit breaker of the present invention (first embodiment);

fig. 10 is a schematic view showing a structure of a locking member in a plug-in type circuit breaker according to the present invention;

fig. 11 is a schematic structural view of a toggle lever in a plug-in circuit breaker according to the present invention (first embodiment);

fig. 12 is an exploded schematic view (second embodiment) of a plug-in circuit breaker of the present invention including a locking mechanism;

fig. 13 is a schematic structural view of a plug-in type circuit breaker including a locking mechanism according to the present invention (second embodiment);

fig. 14 is a schematic view of a structure of a plug-in circuit breaker including a locking mechanism according to the present invention (a second embodiment, without a handle mechanism);

fig. 15 is a schematic structural view of a locking mechanism in a locked state in a plug-in type circuit breaker of the present invention (second embodiment);

fig. 16 is a schematic structural view (second embodiment) of a locking mechanism in an unlocked state in a plug-in type circuit breaker of the present invention;

fig. 17 is a schematic view of a structure of a toggle lever in a plug-in circuit breaker according to the present invention (second embodiment);

fig. 18 is a schematic structural view (third embodiment) of a locking mechanism in a locked state in a plug-in type circuit breaker of the present invention;

fig. 19 is a schematic structural view (third embodiment) of a locking mechanism in an unlocked state in a plug-in type circuit breaker of the present invention;

FIG. 20 is an enlarged view of portion B of FIG. 19;

fig. 21 is a schematic view showing a structure of a toggle lever in a plug-in type circuit breaker according to the present invention (third embodiment).

Detailed Description

The following further describes a specific embodiment of a plug-in circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 21. A plug-in type circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1 and 2, a plug-in circuit breaker includes a housing 1, a first wiring port 11 and a button hole 13 are provided at one end of the housing 1, the first wiring port 11 is correspondingly equipped with a first wiring terminal 5, a button mechanism 2 slidably fitted with the housing 1 is fitted in the button hole 13, a second wiring port 12 (see fig. 13 and 14) is provided at the other end of the housing 1, the second wiring port 12 of the present embodiment adopts a socket structure, and a second wiring terminal connected with an external wire in a plug-in manner is fitted in the second wiring port 12; a contact mechanism electrically connected with the first wiring terminal 5 and the second wiring terminal is arranged in the middle of the shell 1, an operating mechanism 3 is arranged between the contact mechanism and the button mechanism 2, the operating mechanism 3 and the contact mechanism are linked, and the opening and closing of the circuit breaker can be manually operated by pressing the button mechanism 2; an arc extinguishing chamber (not shown) is arranged between the contact mechanism and the second connecting terminal, and the arc generated by the disjunction of the contact mechanism is led into the arc extinguishing chamber to be extinguished. A current transformer 8, a short-circuit protection mechanism 7 and/or an overload protection mechanism (see fig. 13) may also be disposed in the housing 1, the current transformer 8 is used to collect current signals, and when the circuit breaker has a short-circuit or overload fault, the short-circuit protection mechanism 7 and the overload protection mechanism trigger the operating mechanism 3 to trip.

The operating mechanism 3 comprises a linkage part 31 and a support part which are connected in a linkage manner, the linkage part 31 is rotatably assembled between the support part and the button mechanism 2 and is respectively connected with the button mechanism 2 and the support part in a linkage manner through a connecting rod, a jump buckle and a lock catch which are matched with each other in a hasp manner are arranged on the support part, and the moving contact 6 of the contact mechanism is connected to the support part. The button mechanism 2 includes a button member 21 and a connecting member 22 connected to one end of the button member 21, the button member 21 and the connecting member 22 are connected by another link, in this embodiment, the link member 31 is hinged to the connecting member 22 by a link, but the button member 21 and the connecting member 22 may be integrally formed. When the circuit breaker is switched on, the button piece 21 moves inwards along the button hole 13, the linkage piece 31 rotates towards the switching-on direction, when the circuit breaker is switched off, the button piece 21 moves outwards along the button hole 13, the linkage piece 31 rotates towards the switching-off direction, and the short-circuit protection mechanism 7 or the overload protection mechanism enables the tripping lock catch to be unlocked by triggering the lock catch, so that the circuit breaker is tripped and powered off.

Still be equipped with locking mechanical system 4 in the shell 1, be equipped with through-hole 15 (refer to fig. 9) on the lateral wall of one side of shell 1 laminating rack, this embodiment is the last lateral wall of shell 1, locking mechanical system 4's locking end 412 can wear out shell 1 through-hole 15 and cooperate with the rack for fix the circuit breaker on the rack, can not be extracted. Specifically, the locking mechanism 4 includes a locking member 41, one end of the locking member 41 is used as a locking end 412, when the circuit breaker is inserted into the cabinet, the locking end 412 extends out of the housing 1 to be matched with the cabinet to fix the circuit breaker in the cabinet, and when the circuit breaker needs to be taken out of the cabinet, the locking mechanism 4 is unlocked, so that the locking end 412 of the locking member 41 retracts into the housing 1 to release the matching with the cabinet. When the lock mechanism 4 is in the locked state, the lock end 412 extends out of the housing 1, and when the lock mechanism 4 is in the unlocked state, the lock end 412 retracts into the housing 1.

One improvement point of the present application is that the locking mechanism 4 can be manually operated from the outside, an operation window 14 is opened at one end of the housing 1 and one side of the button hole 13, the locking mechanism 4 includes a manual operation portion 421 (see fig. 5, 11, 15, 17 and 21) corresponding to the operation window 14, the locking mechanism 4 can be operated from the outside, and the locking member 41 is extended out of the housing 1 or retracted into the housing 1 by toggling the manual operation portion 421 independently of the button mechanism 2 and the operation mechanism 3, so that the locking and unlocking states of the locking mechanism 4 can be switched, and whether the locking mechanism 4 is in the locking state can be judged from the operation window 14. Preferably, a lock indicator and/or an unlock indicator for indicating the state of the lock mechanism 4 is provided on one side of the operation window 14.

Preferably, as shown in fig. 2 and 12, the locking mechanism 4 is disposed between the button mechanism 2 and one inner wall of the housing 1, the locking mechanism 4 is preferably disposed along an inner wall close to the thickness direction of the housing 1, and the operation window 14 is correspondingly disposed between the button mechanism 2 and the first wire connection port 11 and close to the side, so as to avoid the operation of the locking mechanism 4 from interfering with the operation of the internal mechanism of the circuit breaker. Preferably, the operation window 14 is located between the operation port engaged with the first wiring port 11 and one side inner sidewall of the housing 1.

The locking mechanism 4 comprises a locking member 41 (see fig. 2, 10 and 11) and a toggle lever 42 for driving the locking member 41, the locking member 41 is arranged along a direction perpendicular to the sliding direction of the button mechanism 2, i.e. along a direction perpendicular to the direction in which the plug-in circuit breaker is inserted into the cabinet, a through hole 15 for passing the locking end 412 is arranged on the side wall between the button hole 13 and the second wiring port 12, the toggle lever 42 is arranged on one side of the button mechanism 2 approximately in parallel, one end of the toggle lever 42 is provided with a manual operation portion 421 corresponding to the operation window 14, and the other end of the toggle lever 42 is used for driving the locking member 41 and keeping the locking member 41 in a locking or unlocking state by being matched with the inside of the housing 1.

Preferably, one end of the locking member 41 is provided with an acting portion 411, the other end of the locking member 41 serving as a locking end 412 can penetrate through the through hole 15 and extend out of the housing 1 to be matched and locked with the cabinet, the middle portion of the toggle lever 42 serving as a fulcrum to be rotatably matched with the housing 1, one end of the toggle lever 42 is provided with a manual operation portion 421, the toggle lever 42 can rotate around the fulcrum by toggling the manual operation portion 421, preferably, the manual operation portion 421 extends into the operation window 14 and can swing in the operation window 14, and whether the locking mechanism 4 is in a locking state or not is judged according to the position of the manual operation portion 421 in the operation window 14; the other end of the toggle lever 42 is provided with a driving portion 422 and a limiting portion 423, during the rotation of the toggle lever 42, the driving portion 422 is engaged with the acting portion 411 to drive the locking end 412 of the locking member 41 to extend out of the housing 1 or retract into the housing 1, and the limiting portion 423 is engaged with the engaging portion 164 (see fig. 8, 15, 16 and 20) in the housing 1 to maintain the state of the locking member 41, that is, the limiting portion 423 is engaged with the engaging portion 164 to stably maintain the locking end 412 in a state of extending out of the housing 1 to lock the locking mechanism 4, or in a state of retracting into the housing 1 to unlock the locking mechanism 4.

This is a further improvement of the present application in that a fitting portion 164 is provided to engage with the toggle lever 42 to maintain the locking member 41 in a locked state extended out of the housing 1 or an unlocked state retracted into the housing 1, so that a user can adjust the state of the locking mechanism as desired and maintain the state as desired, facilitating locking of the circuit breaker in a transportation state, locking after being assembled to a cabinet, and unlocking at the time of extraction.

Preferably, as shown in fig. 6 and 7, a return spring 43 providing an elastic return force is further disposed in the middle of the locking member 41, when the locking member 41 is driven by the toggle lever 42, the return spring 43 is elastically deformed to store energy, and when the locking member 41 is restored to the original position, the energy is released, and the return spring 43 may select a compression spring, a tension spring, a torsion spring, or the like according to the matching position of the toggle lever 42 and the locking member 41.

On the basis, the present application further improves that the locking mechanism 4 includes a manual operation portion 421 and a locking member 41 having a stopping portion 413, the manual operation portion 421 corresponds to the operation window 14, and the stopping portion 413 of the locking member 41 is in limit engagement with or released from the button mechanism 2 and/or the operation mechanism 3 by shifting the manual operation portion 421. That is, the user can use the manual operation portion 421 to toggle, so that the stopping portion 413 of the locking member 41 is in limit fit with the button mechanism 2 and/or the operation mechanism 3, and when the stopping portion 413 is in limit fit with the button mechanism 2 and/or the operation mechanism 3, the circuit breaker is prevented from performing switching-on or switching-off actions, the switching-on or switching-off operation of the user under an improper condition is avoided, the safety is improved, and meanwhile, the state of the locking mechanism can also be judged from the operation window. Preferably, when the stopping portion 413 of the locking member 41 of the present application is in limit-fitting engagement with the button mechanism 2 and/or the operating mechanism 3, the stopping portion stops the button mechanism 2 and/or the operating mechanism 3 from performing a closing operation; after the limit matching is released, a user can drive the circuit breaker to be switched on through the button mechanism 2. It should be noted that, the stopping portion 413 of the improved point may not be disposed at the same time as the locking end 412, that is, only the stopping portion 413 is disposed without the locking end 412, only the locking end 412 is disposed without the stopping portion 413, or both the stopping portion 413 and the locking end 412 are included in the protection scope of the present application.

Preferably, the locking mechanism 4 is provided with a stopping portion 413 and a locking end 412 at the same time, and when the locking mechanism 4 is in an unlocked state in which the locking end 412 is retracted into the housing 1, the stopping portion 413 is in limit fit with the button mechanism 2 and/or the operating mechanism 3 to prevent the button mechanism 2 or the operating mechanism 3 from performing a closing operation; when the locking mechanism 4 is in a locking state that the locking end 412 extends out of the shell 1, the stopping part 413 is released from limiting fit with the button mechanism 2 and/or the operating mechanism 3, so that the circuit breaker can be switched on and off as required. Therefore, the circuit breaker can not be assembled in the cabinet and can not be switched on when the locking mechanism 4 is in an unlocked state, and the use and assembly safety of the circuit breaker are improved.

As shown in fig. 6 and 10, the stopping portion 413 is disposed on one side or both sides of the locking member 41 between the acting portion 411 and the locking end 412, and preferably, the stopping portion 413 is in a boss structure. Specifically, a stopping portion 413 is arranged on one side of the locking member 41 facing the button mechanism 2, and in an unlocked state, the locking end 412 of the locking member 41 retracts into the housing 1, and one end of the button mechanism 2 extending into the housing 1 abuts against the stopping portion 413 to prevent the button mechanism 2 from further extending into the housing 1, so that the circuit breaker is prevented from being switched on when the locking mechanism 4 is unlocked; or, a stopping portion 413 is disposed on a side of the locking member 41 facing the operating mechanism 3, and in an unlocked state, when the locking end 412 of the locking member 41 is retracted into the housing 1, the stopping portion 413 abuts against the operating mechanism 3 to limit the switching-on operation of the operating mechanism 3, preferably, the stopping portion 413 abuts against the link 31 of the operating mechanism 3 to prevent the circuit breaker from being switched on by mistake by stopping the link 31 from rotating in a switching-on direction; certainly, both sides at locking piece 41 can set up backstop portion 413 simultaneously, under the unblock state, the backstop portion 413 of locking piece 41 simultaneously with button mechanism 2, the spacing cooperation of operating device 3 is also can in order to prevent the mistake combined floodgate, nevertheless because button mechanism 2 is connected with the linkage of operating device 3, only can realize spacing blocking function at unilateral setting backstop portion 413, both sides all set up backstop portion 413 and make the backstop portion 413 of one of them side can increase its thickness or length because of the distance is far away, so can occupy more inner space.

An embodiment of a first locking mechanism 4 is provided with reference to fig. 1 to 11, in this embodiment, the locking mechanism 4 can be manually operated, and meanwhile, when the locking mechanism 4 is in an unlocked state, the locking mechanism 4 is in limit fit with the button mechanism 2, so that the circuit breaker cannot be switched on.

In this embodiment, the inner wall of one side of the housing 1 is provided with a partition plate 16, as shown in fig. 5 and 9, the partition plate 16 divides the space in the housing 1 into two parts, the button mechanism 2 is provided on one side of the partition plate 16, and the operating mechanism 3, the contact mechanism and the like are provided on the other side of the partition plate 16, so that the partition plate 16 separates the actuating mechanism and the locking mechanism 4 in the circuit breaker, and the locking mechanism 4 is prevented from interfering with the normal operation of other actuating mechanisms.

An operation window 14 is arranged at the side position between the button hole 13 and the first wiring port 11, an avoiding groove 163 corresponding to the operation window 14 is arranged on the partition plate 16, the avoiding groove 163 divides the partition plate 16 into two parts, wherein the part positioned at one side of the button hole 13 is a first partition 161, the part positioned at one side of the first wiring port 11 is a second partition 162, a connecting shaft (not shown) is arranged on the inner wall of the shell 1 between the operation window 14 and the avoiding groove 163 in a protruding mode, a through hole 15 for the locking mechanism 4 to penetrate out of the shell 1 is arranged on the side wall between the first partition 161 and the button hole 13, the central axis of the through hole 15 is perpendicular to the central axis of the connecting shaft, preferably, the through hole 15 corresponds to the middle part of the button mechanism 2, and a groove structure serving as a matching part 164 is arranged on the first partition 161.

Of course, it is also possible to provide no partition plate 16 in the housing 1, and to provide a recess as the fitting portion 164 only on the side of the connecting shaft away from the operation window 14. As another example of the engaging portion 164, the engaging portion 164 may be engaged with an end of the toggle lever 42 provided with the manual operating portion 421 at the operating window 14 to maintain the lock mechanism 4 in the locked state or the unlocked state.

As shown in fig. 3-7, the locking mechanism 4 is disposed between the button mechanism 2 and one side of the inner wall of the housing 1, the locking mechanism 4 includes a toggle lever 42 and a locking member 41, as shown in fig. 11, the toggle lever 42 is in a rod structure, the toggle lever 42 is disposed on one side of the button mechanism 2 approximately in parallel, a connecting hole 424 is disposed in the middle of the toggle lever 42, the toggle lever 42 is rotatably connected with the connecting shaft through the connecting hole 424 to form a pivot for the rotation of the toggle lever 42, one end of the toggle lever 42 extends into the operation window 14 and is provided with a groove at its end as a manual operation portion 421, a driving portion 422 and a limiting portion 423 are disposed at the other end of the toggle lever 42, the driving portion 422 is a U-shaped groove formed by integrally bending the other end of the toggle lever 42, a protruding structure is protruded on the outer side wall of the U-shaped groove as the limiting portion 423, in this embodiment, the U-shaped notch faces the push button mechanism 2, and the stopper portion 423 is located adjacent to the U-shaped notch opening, and the stopper portion 423 protrudes toward the partition plate 16 in the figure.

A buffer arm 425 is arranged on one side of the toggle lever 42, which is opposite to the button mechanism 2, the buffer arm 425 is used for buffering the impact of the rotation process and the first wiring terminal 5, so that the mechanical strength of the toggle lever 42 is increased, as shown in fig. 11, two ends of the buffer arm 425 are connected with the toggle lever 42, a gap for buffering is reserved between the middle of the buffer arm 425 and the toggle lever 42, and the middle of the buffer arm 425 and the middle of the toggle lever 42 are arranged approximately in parallel at intervals. Of course, as another embodiment, the buffer arm 425 may also have one end connected to the toggle lever 42 and the other end spaced apart from the toggle lever 42 to form a buffer gap, and the toggle lever 42 may also be called a wave shape.

As shown in fig. 10, the locking member 41 is disposed along a direction perpendicular to the button mechanism 2, the locking member 41 includes a connecting plate 414, the connecting plate 414 is disposed along an inner wall of one side of the attaching case 1, a columnar protrusion serving as an action portion 411 is protruded from a plate surface at one end of the connecting plate 414, a side surface of the columnar protrusion is abutted against and matched with an arc-shaped surface of the driving portion 422, a baffle 415 perpendicular to the plate surface is disposed at the other end of the connecting plate 414, one end of the baffle 415 close to the button mechanism 2 is bent along an edge side of the connecting plate 414 and extends in a direction close to the action portion 411 to form a stop portion 413 perpendicular to the button mechanism 2, a slot for being matched with the stop portion 413 may be separately disposed on the button member 21 of the button mechanism 2, the stop portion 413 may be clamped into a gap between the button member 21 and the connecting member 22, a boss structure serving as a locking end 412 is protruded from one end of the baffle 415 opposite to the action portion 411, the boss structure can correspondingly penetrate out of the through hole 15 of the shell 1.

In this embodiment, the driving portion 422 is a U-shaped groove with an open side, the acting portion 411 can be inserted into the U-shaped groove in a matching manner, the bottom of the U-shaped groove is abutted against the acting portion 411 to push the locking member 41 in one direction, preferably, the locking member 41 is further provided with a return spring 43 (see fig. 6 and 7) for providing a return force to the locking member 41, the return spring 43 is released to push the locking member 41 to return to the original position, a rib 416 is formed on the plate surface in the middle of the connecting plate 414 in a protruding manner, the rib 416 and two ends of the rib 415 are connected through a pair of rib walls 417 to define a mounting groove 418, the return spring 43 is assembled in the mounting groove 418, in this embodiment, the return spring 43 is a compression spring, and one end of the return spring 43 located at the rib 416 is matched with a side wall of the connecting member 22 in the button mechanism 2 to store energy.

When the locking mechanism 4 of this embodiment needs to be locked, the toggle lever 42 is rotated forward around the fulcrum by swinging the manual operation portion 421, the driving portion 422 is attached to the action portion 411 (that is, the action portion 411 extends into the U-shaped groove) and pushes the locking member 41 to move in the direction perpendicular to the button mechanism 2, so that the locking end 412 passes through the housing 1 to complete locking in cooperation with the cabinet, at this time, as shown in fig. 3 and 4, the stopping portion 413 is separated from the button mechanism 2, the return spring 43 is engaged with the housing 1 to compress and store energy, and the limiting portion 423 is engaged in the engaging portion 164 to keep the locking member 41 in a locked state; when unlocking is needed, the manual operation part 421 is swung to make the toggle lever 42 rotate reversely around the fulcrum, at this time, as shown in fig. 5-8, the limit part 423 is separated from the matching part 164, the reset elastic member releases energy to drive the locking end 412 of the locking member 41 to retract into the housing 1, the stopping part 413 extends into the gap between the button member 21 and the connecting member 22, and the button member 21 is blocked from moving inwards along the button hole 13, namely, the closing movement is blocked.

It should be noted that, when the locking member 41 is no longer provided with the stopping portion 413, the locking mechanism 4 of the present embodiment can still lock and install the circuit breaker in the cabinet, but the locking member 41 is no longer cooperated with the button mechanism 2 for limiting the closing of the circuit breaker.

An embodiment of a second locking mechanism 4 is provided in connection with fig. 12-17, and this embodiment employs a locking mechanism 4 similar to the first embodiment, and the locking mechanism 4 of this embodiment cooperates with the housing 1 on the same principle.

The housing 1 is provided with the operation window 14, the connection shaft, and the through hole 15, which are the same as those of the first embodiment, and the partition plate 16 provided in the housing 1 is also divided into the first partition 161 and the second partition 162 by the escape groove 163 at the middle portion, unlike the first embodiment, as shown in fig. 12 to 16, a groove structure as the fitting portion 164 is provided in the area of the second partition 162 near the escape groove 163.

The locking mechanism 4 comprises a toggle lever 42 and a locking piece 41, as shown in fig. 17, the toggle lever 42 adopts a rod body structure similar to the first embodiment, the toggle lever 42 comprises a manual operation part 421, a connecting hole 424 and a buffer arm 425 which are the same as those of the first embodiment, the other end of the toggle lever 42 is integrally bent to form a U-shaped groove, the opening of the U-shaped groove faces away from the button mechanism 2, and a convex structure serving as a limiting part 423 is convexly arranged on the outer side wall of the U-shaped groove adjacent to the opening of the U-shaped groove; the locking member 41 is constructed in the same manner as in the first embodiment, the acting portion 411 of the locking member 41 is pushed while being inserted into the U-shaped groove, and the return spring 43 provided on the locking member 41 is a compression spring.

When the locking mechanism 4 of the present embodiment needs to be locked, the toggle lever 42 is rotated forward around the fulcrum by swinging the manual operation portion 421, the limiting portion 423 is separated from the engaging portion 164, the reset spring 43 which has stored energy releases energy to drive the locking member 41 to move in a direction perpendicular to the direction of the button mechanism 2, so that the locking end 412 penetrates through the housing 1 to complete locking with the cabinet, and the stopping portion 413 is separated from the button mechanism 2 (see fig. 13-15); when unlocking is needed, the manual operation portion 421 is swung to enable the toggle lever 42 to rotate reversely around the fulcrum, the driving portion 422 is attached to the action portion 411 (namely, the action portion 411 extends into the U-shaped groove) to push the locking end 412 of the locking piece 41 to retract into the housing 1, at this time, the return spring 43 stores energy, the limiting portion 423 is clamped with the matching portion 164 to enable the locking mechanism 4 to be kept in an unlocking state, the stopping portion 413 extends into a gap between the button piece 21 and the connecting piece 22 to stop the button piece 21 from moving inwards along the button hole 13, namely, to stop closing movement (see fig. 16).

A third embodiment of a locking mechanism 4 is provided in connection with fig. 18-21, and this embodiment employs a locking mechanism 4 similar to the first embodiment, and the locking mechanism 4 of this embodiment cooperates with the housing 1 on the same principle.

The same operation window 14, connection shaft, and through hole 15 as those of the first embodiment are provided in the housing 1, and the partition plate 16 provided in the housing 1 is also divided into the first partition 161 and the second partition 162 by the relief groove 163 at the middle part, and different from the first embodiment, as shown in fig. 20, the first recess 1641 and the second recess 1642 as the fitting part 164 are provided in the areas of the first partition 161 and the second partition 162 near the relief groove 163.

The locking mechanism 4 includes a toggle lever 42 and a locking member 41, wherein the locking member 41 may have the same structure as the first and second embodiments. As shown in fig. 21, the toggle lever 42 is integrally formed as a rod body, one end of the toggle lever 42 is provided with a manual operation portion 421 and is matched with the manual operation portion to extend into the operation window 14, the middle portion of the toggle lever 42 is provided with a connection hole 424 rotatably connected with the housing 1, the other end of the toggle lever 42 is provided with a circular groove, the circular groove serves as a driving portion 422 and is rotatably connected with the action portion 411 of the locking member 41, the limiting portion 423 arranged at the other end of the toggle lever 42 comprises a first protrusion 4231 and a second protrusion 4232, and the first protrusion 4231 and the second protrusion 4232 are respectively located at two opposite sides of the other end of the toggle lever 42.

When the locking mechanism 4 needs to be locked, the manual operation part 421 is operated to make the toggle lever 42 rotate forward around the fulcrum, the driving part 422 cooperates with the action part 411 to push the locking piece 41, so that the locking end 412 passes through the through hole 15 and extends out of the housing 1 to cooperate with the cabinet, at this time, when the first protrusion 4231 cooperates with the first groove 1641 in a clamping manner, the locking mechanism 4 is kept in a locking state, and the stopping part 413 is separated from the button mechanism 2 (see fig. 18); when the locking mechanism 4 needs to be unlocked, the manual operation portion 421 is operated to enable the toggle lever 42 to rotate reversely around the fulcrum, the driving portion 422 cooperates with the action portion 411 to push the locking piece 41, so that the locking end 412 is retracted into the locking piece, the second protrusion 4232 cooperates with the second groove 1642 in a clamping manner to keep the locking mechanism 4 in an unlocked state, and the stopping portion 413 cooperates with the button mechanism 2 in a limiting manner (see fig. 19 and 20).

It should be noted that, in this embodiment, since the driving portion 422 is a closed circular groove, the reset motion of the locking member 41 can be directly driven by the toggle lever 42, and therefore, the reset spring 43 can be omitted from the locking member 41, and the mounting groove 418 on the locking member 41 can also be omitted.

A fourth embodiment of the locking mechanism 4 is provided (not shown), in which the locking mechanism 4 cooperates with the housing 1 on the same principle.

The same operation window 14 and connection shaft as those of the first embodiment are provided on the housing 1, the partition plate 16 provided in the housing 1 is also divided into a first partition 161 and a second partition 162 by an escape groove 163 at the middle portion, a recess structure as a fitting portion 164 is provided in a region of the first partition 161 and/or the second partition 162 near the escape groove 163, and a through hole 15 through which the lock mechanism 4 passes is provided on a side wall between the first partition 161 and the button hole 13, preferably, the through hole 15 corresponds to the link 31 of the operation mechanism 3.

The locking mechanism 4 comprises a toggle lever 42 and a locking member 41, wherein the toggle lever 42 is any one of the three embodiments, but because the through hole 15 is located closer to the operating mechanism, the length of the toggle lever 42 of the present embodiment is greater than the length of the toggle lever 42 of the three embodiments. The locking member 41 has a similar structure to that of the three embodiments, the locking member 41 includes the same connecting plate 414, acting portion 411, locking end 412 and blocking plate 415, and unlike the three embodiments, the stopping portion 413 is formed by bending and extending an end of the blocking plate 415 facing the link 31.

When the locking mechanism 4 needs to be locked, the toggle lever 42 or the return spring 43 drives the locking end 412 to extend out of the housing 1, and at this time, the stopping part 413 is separated from the linkage piece 31 of the operating mechanism 3; when the operating mechanism 3 needs to be unlocked, the return spring 43 or the toggle lever 42 drives the locking end 412 to retract, and at this time, the stopping portion 413 abuts against the link 31 to limit the link 31 from rotating in the closing direction.

The foregoing is a more detailed description of the utility model in connection with specific preferred embodiments and it is not intended that the utility model be limited to these specific details. For those skilled in the art to which the utility model pertains, several simple deductions or substitutions can be made without departing from the spirit of the utility model, and all shall be considered as belonging to the protection scope of the utility model.

Claims (11)

1. The utility model provides a plug-in circuit breaker, includes shell (1), is equipped with button mechanism (2) and first wiring mouth (11) in the one end of shell (1), is equipped with second wiring mouth (12) at the other end of shell (1), is equipped with locking mechanical system (4) in shell (1), is equipped with through-hole (15), its characterized in that on one side lateral wall of shell (1): one end that is equipped with button mechanism (2) at shell (1) is equipped with operation window (14), locking mechanical system (4) include manual operation portion (421) and locking piece (41) that have locking end (412), manual operation portion (421) correspond with operation window (14), make locking end (412) of locking piece (41) stretch out the shell (1) through-hole (15) outside or retract in shell (1) through stirring manual operation portion (421).

2. A plug-in circuit breaker as claimed in claim 1, characterized in that: the locking mechanism (4) is arranged along the inner side wall close to the shell (1), and the operation window (14) is positioned between the operation opening matched with the first wiring opening (11) and the inner side wall of one side of the shell (1).

3. A plug-in circuit breaker as claimed in claim 1, characterized in that: the locking mechanism (4) comprises a toggle lever (42) and a locking piece (41) driven by the toggle lever (42), and when the toggle lever (42) is toggled, the toggle lever (42) is clamped with a matching part (164) arranged in the shell (1), so that a locking end (412) of the locking piece (41) is maintained in a state of extending out of the shell (1) or retracting into the shell (1).

4. A plug-in circuit breaker as claimed in claim 3, characterized in that: stir lever (42) rotating assembly, locking piece (41) set up along the direction of perpendicular to button mechanism (2), the one end of stirring lever (42) is equipped with manual operation portion (421) that correspond with operation window (14), the other end of stirring lever (42) is equipped with drive division (422) and spacing portion (423) with cooperation portion (164) joint, the one end of locking piece (41) be equipped with drive division (422) complex effect portion (411), the other end of locking piece (41) is as locking end (412).

5. A plug-in circuit breaker as claimed in claim 4, characterized in that: one end of shell (1) be equipped with button hole (13) with first wiring mouth (11) be equipped with division board (16) in shell (1), be equipped with in the middle part of division board (16) and dodge groove (163) corresponding with operation window (14), be equipped with the connecting axle dodging the protrusion between groove (163) and operation window (14), dodge groove (163) and divide into division board (16) respectively with button hole (13), first wiring mouth (11) relative first partition portion (161), second partition portion (162) be equipped with cooperation portion (164) on first partition portion (161) and/or second partition portion (162), be equipped with through-hole (15) at shell (1) lateral wall between first partition portion (161) and button hole (13).

6. A plug-in circuit breaker as claimed in claim 5, characterized in that: stir lever (42) wholly and be body of rod structure, set up the recess as manual operation portion (421) at the one end tip of stirring lever (42) stir the middle part of lever (42) is equipped with connecting hole (424), connecting hole (424) and connecting axle normal running fit are as the rotation fulcrum of stirring lever (42).

7. A plug-in circuit breaker as claimed in claim 6, characterized in that: a protruding structure serving as a limiting part (423) is arranged on the outer side wall of the U-shaped groove opening in a protruding mode, a groove structure serving as a matching part (164) is arranged in the area, close to the avoiding groove (163), of the first separating part (161), and the limiting part (423) is connected with the matching part (164) in a clamping mode to enable the locking mechanism (4) to be kept in a locking state that the locking end (412) extends out of the shell (1).

8. A plug-in circuit breaker as claimed in claim 6, characterized in that: stir the U-shaped groove of the other end bending formation back to button mechanism (2) of lever (42), the U-shaped groove is for the cooperation of action portion (411) to stretch into as drive division (422), and the protrusion is equipped with the protruding structure as spacing portion (423) on the adjacent U-shaped groove open-ended lateral wall in U-shaped groove, and the region that is close to in second partition portion (162) and dodges groove (163) is equipped with the groove structure as cooperation portion (164), makes locking mechanical system (4) keep the unblock state in locking end (412) retraction shell (1) through spacing portion (423) and cooperation portion (164) joint.

9. A plug-in circuit breaker as claimed in claim 6, characterized in that: the other end of the toggle lever (42) is provided with a circular groove, the circular groove is used as a driving part (422) and is rotationally connected with the acting part (411), the limiting part (423) arranged at the other end of the toggle lever (42) comprises a first protrusion (4231) and a second protrusion (4232), a first groove (1641) and a second groove (1642) are respectively arranged in the areas, adjacent to the avoidance groove (163), of the first separating part (161) and the second separating part (162), when the toggle lever (42) rotates around a fulcrum, when the first protrusion (4231) is in clamping fit with the first groove (1641), the locking mechanism (4) is kept in a locking state that the locking end (412) extends out of the shell (1), and when the second protrusion (4232) is in clamping fit with the second groove (1642), the locking mechanism (4) is kept in an unlocking state that the locking end (412) retracts into the shell (1).

10. A plug-in circuit breaker according to claim 3 or 4, characterized in that: the locking piece (41) comprises a connecting plate (414), a columnar protrusion serving as an acting part (411) is arranged on the plate surface at one end of the connecting plate (414) in a protruding mode, a baffle (415) perpendicular to the plate surface is arranged at the other end of the connecting plate (414), and a boss structure serving as a locking end (412) is arranged at one end, deviating from the acting part (411), of the baffle (415) in a protruding mode.

11. A plug-in circuit breaker as claimed in claim 1, characterized in that: the locking mechanism (4) further comprises a return spring (43) providing a return force to the locking member (41).

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