CN218676991U - Plug-in circuit breaker - Google Patents

Abstract

The utility model provides an insert circuit breaker, includes the shell, rotates at the operation end of shell and is equipped with handle mechanism, is provided with operating device and locking mechanical system in the shell, and handle mechanism links with operating device in order to drive circuit breaker divide-shut brake, has seted up the holding tank at the operation end terminal surface of shell, the holding tank is closed by the apron lid of being connected with the shell rotation, the apron is equipped with the operation portion, and the apron rotates between retrieving the position and opening the position, and when the apron rotated and retrieves the position, the lid closed holding tank and operation portion and is close to the operation end terminal surface, and when the apron rotated and opens the position, the operation end terminal surface was kept away from to the operation portion was used for drawing the circuit breaker. The utility model discloses the setting is closed by the apron lid at the mounting groove of operation end, and the apron can rotate and retrieve the position lid and close the mounting groove and do not influence handle mechanism's operation, and when dismantling the circuit breaker, the operation portion after the apron is opened can cooperate in order to draw the circuit breaker with extracting tool, possesses simple structure, stable strong and convenient advantage of drawing.

Description

Plug-in circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus field, concretely relates to plug-in circuit breaker.

Background

In recent years, with the development of communication technology, plug-in circuit breakers are widely used. The existing plug-in circuit breaker is connected with a cabinet in a plugging and unplugging mode, the plug-in circuit breaker and the cabinet are mainly operated through a button piece, in order to continuously meet the application requirements of the plug-in circuit breaker, particularly when the operation mode of an operation piece is changed into a handle toggle mode, the normal disassembly of the circuit breaker cannot be met by the pull-out and disassembly structure of the button piece, and particularly in a multi-pole circuit breaker, the normal disassembly cannot be realized by independently pulling one of the button pieces.

Disclosure of Invention

An object of the utility model is to overcome prior art's defect, provide a simple structure, conveniently draw the bayonet circuit breaker of dismantlement.

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

the utility model provides an insert circuit breaker, includes the shell, rotates at the operation end of shell and is equipped with handle mechanism, is provided with operating device and locking mechanical system in the shell, and handle mechanism links with operating device in order to drive circuit breaker divide-shut brake, has seted up the holding tank at the operation end terminal surface of shell, the holding tank is closed by the apron lid of being connected with the shell rotation, the apron is equipped with the operation portion, and the apron rotates between retrieving the position and opening the position, and when the apron rotated and retrieves the position, the lid closed holding tank and operation portion and is close to the operation end terminal surface, and when the apron rotated and opens the position, the operation end terminal surface was kept away from to the operation portion was used for drawing the circuit breaker.

Further, when the cover plate rotates to the recovery position, the cover plate is parallel to the operation end face of the housing, and when the cover plate rotates to the open position, the cover plate is perpendicular to the operation end face.

Furthermore, one side of the cover plate is a plane area, and after the accommodating groove is covered, the plane area and the end face of the operation end are kept flat.

Furthermore, the operating part is provided with a linkage hole, and a linkage shaft is assembled in the linkage hole and used for linkage connection of the two adjacent cover plates.

Further, the operation portion is arranged on one side, facing the end face of the operation end, of the cover plate in a protruding mode, an operation face used for exerting drawing force is arranged, and when the cover plate covers the accommodating groove, the operation portion is accommodated in the accommodating groove.

Further, be equipped with the rotation portion in the apron one end of keeping away from the operation portion, rotation portion and holding tank inside wall rotate to be connected.

Further, a return spring is arranged between the cover plate and the shell, and the return spring drives the cover plate to rotate towards the direction of the recovery position.

Furthermore, the operating end of shell rotates and is equipped with a plurality of handle mechanism that parallel, and two adjacent handle mechanism linkage are connected, have seted up a holding tank at the operating end terminal surface of one of them handle mechanism one side at least, and every holding tank covers respectively has closed a apron, and the operating portion of two adjacent apron passes through the universal driving shaft linkage and connects.

Further, the apron is equipped with spacing portion, and when handle mechanism rotated to the combined floodgate position, handle mechanism and spacing portion cooperation made the apron unable from retrieving the position and rotating to the open position.

Further, when the cover plate rotates to the opening position, the cover plate limits the handle mechanism to enable the handle mechanism not to rotate to the switching-on position from the switching-off position.

Further, handle mechanism is equipped with first drive division, handle mechanism can rotate closing position, separating brake position and unblock position, separating brake position is located between closing brake position and the unblock position, and when handle mechanism rotated to closing brake position, handle mechanism passes through operating device drive circuit breaker combined floodgate, and when handle mechanism rotated to separating brake position, handle mechanism passed through operating device drive circuit breaker separating brake, and when handle mechanism rotated from separating brake position to unblock position, first drive division drive locking mechanical system unblock.

Further, the shell lateral wall is equipped with spacing hole, locking mechanical system is including deblocking spare, locking piece and elastic component, the locking piece is equipped with the sticking department, make the sticking department stretch out spacing hole by elastic component drive locking piece, deblocking spare rotates to assemble between locking piece and handle mechanism, deblocking spare is equipped with first deblocking spare and third drive division, cooperate the drive deblocking spare to rotate by first drive division and first deblocking spare, make the cooperation of third drive division and locking piece in order to drive the sticking department and withdraw the shell.

Further, the unlocking piece comprises a first rotating arm and a second rotating arm, the first rotating arm is connected with one end of the second rotating arm to form a rotating portion, the end portion of the other end of the first rotating arm serves as a first unlocking portion to be matched with a first driving portion of the handle mechanism, and the other end of the second rotating arm serves as a third driving portion to be abutted to a matching portion of the locking piece.

Further, the shell lateral wall is equipped with spacing hole, locking mechanical system is including deblocking spare and elastic component, deblocking spare rotates to assemble between handle mechanism and spacing hole, and deblocking spare is provided with first deblocking spare and sticking department, makes the sticking department stretch out spacing hole by elastic component drive deblocking spare, and deblocking spare is rotated by first drive division and the cooperation drive of first deblocking spare, makes the sticking department retract in the shell.

Further, the unlocking piece comprises a first rotating arm and a second rotating arm, the first rotating arm is connected with one end of the second rotating arm to form a rotating portion, the end portion of the other end of the first rotating arm serves as a first unlocking portion to be matched with a first driving portion of the handle mechanism, and the end portion of the other end of the second rotating arm is convexly provided with a boss serving as a locking portion.

Further, the lateral wall of the shell is provided with a guide groove, and the opening direction of the guide groove faces the wiring end of the shell.

The utility model discloses a plug-in circuit breaker, the setting is closed by the apron lid at the mounting groove of operation end, and the apron can rotate and retrieve the position lid and close the mounting groove and do not influence handle mechanism's operation, and when dismantling the circuit breaker, the operation portion after the apron is opened can with the extracting tool cooperation in order to draw the circuit breaker, compares and draws through the button now, possesses simple structure, stable strong and convenient advantage of drawing.

In addition, one side of the cover plate is a plane area, and the cover plate can keep flat with the end face of the operation end after being covered with the accommodating groove, so that the cover plate and the shell form a whole.

In addition, when the handle mechanism rotates to the switching-on position, the handle mechanism is matched with the limiting part to ensure that the cover plate cannot rotate to the opening position from the recovery position, so that the cover plate is prevented from being opened in the switching-on state, and the pulling operation is carried out to improve the electricity utilization safety; when the cover plate rotates to the opening position, the cover plate limits the handle mechanism to enable the handle mechanism to be incapable of rotating to the switching-on position from the switching-off position, and switching-on is prevented when drawing is conducted so as to improve electricity utilization safety.

Drawings

Fig. 1 is a schematic structural diagram of the plug-in circuit breaker of the present invention when the cover plate is covered;

fig. 2 is a schematic structural diagram of the plug-in circuit breaker of the present invention when the cover plate is opened (the locking mechanism is in an unlocked state);

fig. 3 is a schematic structural diagram of the plug-in circuit breaker of the present invention when the cover plate is opened (the locking mechanism is in a locked state);

fig. 4 is a schematic structural diagram of the plug-in circuit breaker of the present invention when the cover plate is covered (the housing is provided with a guide groove);

fig. 5 is a schematic structural view of a multi-pole plug-in circuit breaker according to the present invention (a second embodiment of the plug-in circuit breaker in a lid-closed state);

fig. 6 is a schematic structural diagram of a first embodiment of the plug-in circuit breaker according to the present invention;

fig. 7 is a schematic structural diagram of a second embodiment of the plug-in circuit breaker of the present invention;

fig. 8 is a schematic structural view of the inside of the housing of the operation terminal according to the present invention;

fig. 9 is a schematic structural diagram of a first embodiment of the cover plate of the present invention (including a return spring);

fig. 10 is a schematic structural view (side provided with a mounting groove) of a first embodiment of the cover plate of the present invention;

fig. 11 is a schematic structural view of a first embodiment of a cover plate according to the present invention;

fig. 12 is a schematic structural view of a second embodiment of the cover plate of the present invention;

fig. 13 is a schematic structural view of a third embodiment of the cover plate of the present invention;

fig. 14 is a schematic structural view of a fourth embodiment of the cover plate in the present invention.

Detailed Description

The following description will further describe the embodiment of the plug-in circuit breaker according to the present invention with reference to the embodiments shown in fig. 1-14. The plug-in circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1-14, a plug-in circuit breaker, which can be inserted into a cabinet, includes a housing 1, one end of the housing 1 is an operating end 11, a handle mechanism 2 is rotatably assembled on the operating end 11, the other end of the housing 1 is a terminal 12, a plug-in connection device (not shown) is disposed on the terminal 12, preferably, a guide slot 17 (see fig. 4) is disposed on a sidewall of the housing 1, the guide slot 17 provides a guiding function for the plug-in connection of the circuit breaker, an opening of the guide slot 17 faces the terminal 12, an operating mechanism 7, a contact mechanism and a locking mechanism are disposed in the housing 1 between the operating end 11 and the terminal 12, the contact mechanism includes a moving contact and a stationary contact which are mutually matched, the moving contact is connected to the operating mechanism 7, the stationary contact is fixedly assembled in the housing 1, the handle mechanism 2 is linked with the operating mechanism 7 to drive the moving contact to contact with or be far away from the fixed contact, a limiting hole 13 is formed in the side wall of the shell 1 between the operating end 11 and the wiring terminal 12, the locking mechanism comprises a locking portion 321 matched with the limiting hole 13, when the locking portion 321 extends out of the limiting hole 13, the locking mechanism is in a locking state and can be in limiting matching with a cabinet to prevent a circuit breaker installed in the cabinet from being pulled out, the locking portion 321 retracts into the shell 1, the locking mechanism is in an unlocking state and can pull out the circuit breaker installed in the cabinet, the handle mechanism 2 can rotate to a switching-on position and a switching-off position, when the handle mechanism 2 rotates to the switching-on position, the handle mechanism 2 drives the circuit breaker to be switched on through the operating mechanism 7, and when the handle mechanism 2 rotates to the switching-off position, the handle mechanism 2 drives the circuit breaker to be switched off through the operating mechanism 7. In addition, a short-circuit protection mechanism, an arc extinguishing device, an overload protection mechanism and the like can be arranged in the shell 1 between the wiring device and the contact mechanism, and details of the prior art in the field are omitted.

The improvement of this application lies in, has seted up holding tank 14 at 11 terminal surfaces of operation end of shell 1, holding tank 14 is closed by 4 covers of the apron of being connected with shell 1 rotation, apron 4 is equipped with operation portion 42, and apron 4 rotates between retrieving position and opening position, and when apron 4 rotated the retrieval position, the lid closed holding tank 14 and operation portion 42 and is close to 11 terminal surfaces of operation end, and when apron 4 rotated the opening position, operation portion 42 kept away from 11 terminal surfaces of operation end and is used for drawing the circuit breaker. By allowing the plug-in type circuit breaker to be pulled out from the cabinet at the operation portion 42, the force can be applied directly using the operation portion 42, or a removal tool can be attached to the operation portion 42 so as to apply a larger pulling force.

Preferably, when the cover plate 4 rotates to the recovery position, the cover plate 4 is parallel to the end face of the operation end 11 of the housing 1, when the cover plate 4 rotates to the open position, the cover plate 4 forms an included angle with the end face of the operation end 11, and preferably, the included angle between the cover plate 4 and the end face of the operation end 11 is 90 degrees, that is, the cover plate 4 is perpendicular to the end face of the operation end 11.

Preferably, as shown in fig. 2 and 6-8, a receiving groove 14 is formed on an end surface of the operating end 11 of the housing 1, and the receiving groove 14 is located on one side of the handle mechanism 2 and on an upper side of the handle mechanism 2 in the drawing; when the cover plate 4 rotates to the recovery position, the accommodating groove 14 is covered. A rotating part 41 and an operating part 42 are provided at both ends of the cover plate 4, respectively, and the rotating part 41 is rotatably connected to the housing 1. Preferably, the protruding setting of rotation part 41 and operation part 42 is in the apron 4 towards the same one side of the 11 terminal surfaces of operation end of shell 1, and the opposite side of apron 4 is plane district 45, rotation part 41 rotates with holding tank 14 inside wall to be connected, and when the holding tank 14 was closed to the apron 4 lid, rotation part 41 and operation part 42 were held in holding tank 14, kept level and smooth with the outside of shell 1 by plane district 45, and plane district 45 keeps leveling with the 11 terminal surfaces of operation end promptly, and apron 4 forms the integral type structure with shell 1 this moment, apron 4 plays the effect that the apron sheltered from simultaneously and draws the effect of piece, compares and draws through the button spare, possesses simple structure, pleasing to the eye, and the convenient advantage of drawing.

The operation portion 42 is a boss protruding from one side of the cover plate 4, the operation portion 42 is provided with an operation surface 421 for applying a drawing force, the operation surface 421 intersects with the cover plate 4 facing one side of the housing 1, and is located at one side of the operation portion 42 close to the rotating portion 41, and when the cover plate 4 rotates to an opening position, the operation surface is opposite to the end surface of the operation end 11 of the housing 1 and is used for applying the drawing force or is matched with a detaching tool to realize drawing. The boss of the operating portion 421 may be an arc boss, an annular boss, a planar boss, or other structures, the concave surface of the arc boss, the hole wall of the central hole of the annular boss, or the side wall of the planar boss serves as the operating surface 421, and preferably, the operating surface 421 is an arc surface, which is convenient for applying by fingers or a disassembling tool. Further, a plurality of anti-slip ribs are provided on the surface of the operating portion 42, and preferably, a side wall of the operating portion 42 on the side away from the rotating portion 41 is used as the pushing surface 422, and the plurality of anti-slip ribs are provided on the pushing surface 422, so that the cover 4 can be opened easily by operating the pushing surface 422.

Particularly, a limit portion 46 is disposed at one end of the cover plate 4 close to the handle mechanism 2, and when the handle mechanism 2 rotates to the switch-on position, the handle mechanism 2 and the limit portion 46 cooperate to prevent the cover plate 4 from rotating to the open position from the recovery position, so as to prevent the cover plate 4 from being opened in the switch-on state, and to perform the pulling operation to improve the electricity utilization safety. The stopper 46 in this embodiment is formed by a region of the flat surface region 45 near one end of the handle mechanism 2. Preferably, when the cover plate 4 rotates to the opening position, the cover plate 4 limits the handle mechanism 2 to prevent the handle mechanism 2 from rotating from the opening position to the closing position, and the closing is prevented during the drawing so as to improve the electricity utilization safety.

In addition, handle mechanism 2 can also be used for driving the locking mechanical system unblock, as shown in fig. 6-7, handle mechanism 2 is provided with first drive division 21, handle mechanism 2 can rotate closing position, separating brake position and unblock position, separating brake position is located between closing brake position and the unblock position, and when handle mechanism 2 rotated closing brake position, handle mechanism 2 drove the circuit breaker through operating device 7 and closes a floodgate, and when handle mechanism 2 rotated separating brake position, handle mechanism 2 drove the circuit breaker through operating device 7 and opens a floodgate, and when handle mechanism 2 rotated unlocking position from separating brake position, first drive division 21 drive locking mechanical system unblock.

Preferably, the rotating part 41 is rotatably connected to the housing 1 adjacent to the handle mechanism 2, and when the cover plate 4 is covered on the receiving groove 14, the operating part 42 is located at one end of the receiving groove 14 far from the handle mechanism 2, and the rotating part 41 is located between the handle mechanism 2 and the operating part 42. Of course, the rotating part 41 may be disposed on a side away from the handle mechanism 2, and the operating part 42 is located between the rotating part 41 and the handle mechanism 2 when the cover plate 4 covers the receiving groove 14, which is relatively inconvenient.

Furthermore, a linkage hole 47 is formed in the operation portion 42, a linkage shaft 6 is assembled in the linkage hole 47, and when a plurality of cover plates 4 are arranged on the end face of the operation end 11, if the circuit breaker is a multi-pole circuit breaker, and one cover plate 4 is arranged on each circuit breaker pole, two adjacent cover plates 4 are connected in a linkage mode through the linkage shaft 6, so that the multi-pole circuit breaker can be pulled simultaneously. When the circuit breaker is a multi-pole circuit breaker, each circuit breaker pole is not necessarily provided with the cover plate 4 and the locking mechanism, and at least comprises one cover plate 4, and the circuit breaker pole corresponding to the cover plate 4 is provided with the locking mechanism, for example, when the circuit breaker is a 3P circuit breaker, the middle circuit breaker pole can be provided with the cover plate 4 and the locking mechanism, and each pole can be provided with the cover plate 4 and the locking mechanism; 4P, the middle two breaker poles are provided with a cover plate 4 and a locking mechanism, or each pole is provided with the cover plate 4 and the locking mechanism.

In addition, still be provided with reset spring 5 between apron 4 and shell 1, reset spring 5 and the coaxial rotational assembly of apron 4, two elastic arm of reset spring 5 are used for providing the restoring force for apron 4 with apron 4, shell 1 cooperation respectively, and drive apron 4 closes the direction rotation of holding tank 14 to the lid promptly to retrieving the position.

Referring to fig. 1-6 and 8-14, a first embodiment of an insertion type circuit breaker is provided, where two ends of a housing 1 are respectively used as an operating end 11 and a terminal 12, a side wall of the housing 1 connected between the operating end 11 and the terminal 12 is provided with a limiting hole 13, a terminal surface of the operating end 11 is provided with a handle hole and an accommodating groove 14, the handle hole is located at one side of the terminal surface of the operating end 11 away from the limiting hole 13, the accommodating groove 14 is located at one side of the terminal surface of the operating end 11 close to the limiting hole 13, a first connecting portion 161 is disposed on an inner side wall of the housing 1 below the handle hole, a handle mechanism 2 includes a handle body, the handle body includes an integrally formed rotation connecting portion and a handle portion, the rotation connecting portion is rotatably matched with the first connecting portion 161, the handle portion is connected to one side of the rotation connecting portion and extends out of the housing 1 from the handle hole, a boss is protruded at one side of the handle portion and serves as a first driving portion 21, and the first driving portion 21 and the handle portion are respectively located at two sides of the rotation connecting portion.

The one end that holding tank 14 is close to handle mechanism 2 is equipped with the opening, the opening communicates with the inside of shell 1, 1 inside wall of shell at the opening part is equipped with connecting hole 15, be equipped with the connecting axle in connecting hole 15, make apron 4 and the coaxial assembly of reset spring 5 on the connecting axle, the opening department is after assembling apron 4 and reset spring 5, can shelter from the opening, or, the opening part is sheltered from by other structures of shell 1 inner wall, prevent that the foreign matter from getting into the inside of shell 1, or, the opening part is not communicate with the inside of shell 1, but its groove depth can satisfy the required rotation space of rotation portion 41, holding tank 14 is close to open-ended tank bottom wall tip and is used for the elastic arm butt with reset spring 5, holding tank 14 keeps away from the sunken arc of the sunken formation of tank bottom of opening one side, the arc is sunken can correspond the operation portion 42 that holds apron 4, when making apron 4 lid fit holding tank 14, make apron 4 and shell 1's the outside keep level, holding tank 14 keeps away from handle mechanism 2's one end is opened and is sealed by apron 4.

In this embodiment, the locking mechanism is correspondingly disposed below the accommodating groove 14, the locking mechanism includes a locking member 32, an unlocking member 31 and an elastic member 33, wherein the locking member 32 is disposed at one side of the limiting hole 13, the locking member 32 of this embodiment is preferably slidably engaged with the housing 1, and of course, may be rotatably connected with the housing 1, the locking member 32 is provided with a locking portion 321 and an engaging portion 322, the elastic member 33 drives the locking member 32 to make the locking portion 321 extend out of the limiting hole 13, and at this time, the locking mechanism is in a locking state, the unlocking member 31 is rotatably assembled between the handle mechanism 2 and the locking member 32, the unlocking member 31 is provided with a first unlocking portion 311 and a third driving portion 313, when the handle mechanism 2 is rotated to an unlocking position, the first driving portion 21 is engaged with the first unlocking portion 311 to drive the unlocking member 31 to rotate, so that the third driving portion 313 presses the engaging portion 322 to drive the locking portion 321 to retract into the housing 1, and at this time, the locking mechanism is in an unlocking state.

As shown in fig. 8, a second connecting portion 162 is disposed between the limiting hole 13 and the receiving groove 14, the second connecting portion 162 corresponds to a lower portion of the receiving groove 14, in fig. 8, the second connecting portion 162 is located at a right side of the receiving groove 14, the unlocking member 31 is rotatably connected to the housing 1 through the second connecting portion 162, at least one side of the limiting hole 13 is provided with a sliding limiting portion, the locking member 32 is slidably engaged with the sliding limiting portion, so that the locking member 32 is driven by the elastic member 33 and the unlocking member 31 to move linearly at one side of the limiting hole 13, of course, the sliding limiting portion is not provided, the locking member 32 is rotatably assembled at one side of the limiting hole 13, and the elastic member 33 and the unlocking member 31 drive the locking member 32 to rotate, so that the locking portion 321 extends out of the limiting hole 13 or retracts into the housing 1.

In the present embodiment, the unlocking piece 31 is correspondingly located below the receiving groove 14, and a locking portion 321 and a matching portion 322 are disposed on a side of the locking piece 32 facing the limiting hole 13, wherein the locking portion 321 is a protruding boss structure, the locking portion 321 is matched with the limiting hole 13, the matching portion 322 is an inclined surface disposed on a side of the locking piece 32, and the matching portion 322 can be matched with the third driving portion 313 of the unlocking piece 31.

Combine 6 to provide a concrete structure of unlocking piece 31, unlocking piece 31 includes first pivoted arm and second pivoted arm, first pivoted arm is connected with the one end of second pivoted arm and is formed rotation portion 41, by rotation portion 41 and second connecting portion 162 normal running fit, the other end tip of first pivoted arm is as first unlocking portion 311 and handle mechanism 2's first drive portion 21 cooperation, the other end of second pivoted arm is as third drive portion 313 and locking piece 32's cooperation portion 322 butt, in the figure third drive portion 313 and the cooperation portion 322 of inclined plane are laminated mutually.

The locking piece 32 is integrally blocky, one side of the locking piece 32 facing the limiting hole 13 is provided with a locking part 321 and a matching part 322, the locking part 321 is a boss which is convexly arranged on one side of the locking piece 32, so that one side of the locking piece 32 facing the limiting hole 13 is integrally in a shape of a Chinese character 'tu', the locking piece 32 on the same side with the locking part 321 is provided with an L-shaped groove, the side wall of one side of the L-shaped groove facing the limiting hole 13 is an inclined plane, the inclined plane is the matching part 322 and is used for being abutted against the unlocking piece 31, as shown in fig. 6, one side of the matching part 322 far away from the unlocking piece 31 is higher, one side of the matching part 322 close to the unlocking piece 31 is lower, and the matching part 322 can be preferably attached to one side of the second rotating arm so as to improve the matching degree of the locking part and the unlocking piece; locking piece 32 body protrusion in one side of spacing hole 13 is backed on the back is equipped with boss structure the breach groove has been seted up to boss structure's corner, when the contact supports to be changeed to the branch floodgate position by the switching-on position, the contact support can be dodged in the breach groove, when the contact supports to be located the switching-on position, one side in breach groove can support the butt with the contact, in order to restrict the locking mechanical system unblock, the pilot hole has been seted up in one side of next-door neighbour boss structure, elastic component 33 cooperation is assembled between the inside wall of pilot hole and shell 1, also be exactly elastic component 33 both ends respectively with third cooperation portion 322, 1 inside wall butt of shell, thereby make elastic component 33 take place to deform and slide in shell 1 with drive locking piece 32. When the contact support is located at the opening position and the locking piece 32 is in the unlocking state and is retracted into the shell, one side of the notch groove can be abutted against the contact support to limit the contact support to be closed.

The operating mechanism 7 is rotatably assembled below the locking mechanism, the operating mechanism 7 comprises a contact support which is rotatably connected with the shell 1, a tripping buckle and a lock catch are rotatably assembled on the contact support, the tripping buckle is in snap fit with one end of the lock catch, the contact support is in linkage connection with the handle mechanism 2 through a connecting rod, the moving contact is installed on the contact support through a moving contact spring, the contact support is positioned on one side of the locking piece 32, when the circuit breaker is switched on, a convex limiting surface on the contact support rotates to a position corresponding to the locking piece 32, the contact support is in limiting fit with the locking piece 32 to prevent the locking piece 32 from moving to limit the locking part 321 to retract into the shell 1, and when the circuit breaker is switched off, the limiting surface supported by the contact rotates to a position avoiding the locking piece 32. When the circuit breaker is located at the opening position and the locking member 32 is in the unlocked state and retracted into the housing 1, one side of the notch groove may abut against the contact support to restrict the contact support from closing.

A first embodiment of the cover plate 4 is provided with reference to fig. 1-6 and 9-11, the cover plate 4 includes a cover plate body, the width of the cover plate body is the same as the width of the end face of the operation end 11, the two ends of the cover plate body are respectively provided with an operation portion 42 and a rotation portion 41, wherein the operation portion 42 and the rotation portion 41 are protruded on the same side of the cover plate body, and the other side of the cover plate body, which is not provided with the rotation portion 41 and the operation portion 42, is a plane area 45, and after the accommodation groove 14 is closed, the plane area 45 and the outside of the housing 1 are kept flat. As shown in fig. 9 to 11, the rotation portion 41 is a cylindrical boss protruding from one side of the cover plate body, a shaft hole 413 is disposed in the middle of the rotation portion 41, a connection shaft is assembled in the shaft hole 413 and the connection hole 15 to rotatably assemble the cover plate 4 to the housing 1, an installation groove 411 is disposed at one end surface of the rotation portion 41, a shaft hole 413 penetrating through the rotation portion 41 is disposed at the bottom of the installation groove 411, the return spring 5 is assembled to the installation groove 411, the return spring 5 is preferably a torsion spring sleeved on the connection shaft, a notch 412 is disposed at one side of the installation groove 411, one elastic arm of the return spring 5 extends out from the notch 412 to abut against the housing 1, and the other elastic arm abuts against one side of the notch 412.

The operation part 42 is an annular boss arranged on one side of the cover plate body, the hole wall of a central hole of the annular boss is used as an operation surface 421, the central axis of the central hole is parallel to the central axis of the installation groove 411, the outer diameter of the operation part 42 is larger than the outer diameter of the rotating part 41, namely, one side of the operation part 42 is more convex, when the cover plate 4 is covered on the accommodating groove 14, one side of the operation part 42 can be abutted against the arc-shaped recess of the installation groove 411, and after the cover plate 4 is opened, a detaching tool can be inserted into the central hole to be attached to the operation surface 421; the side wall of the operation portion 42 away from the rotation portion 41 is used as a pushing surface 422, that is, the arc-shaped outer side wall of the operation portion 42 away from the rotation portion 41 is used as a pushing surface 422 in the drawing, the pushing surface 422 is provided with a plurality of anti-slip ribs, in this embodiment, the width of the pushing surface 422 is the largest, the width of the annular boss is smaller on the side close to the connection portion, a linkage hole 47 is provided at one end of the operation portion 42 away from the rotation portion 41, and a linkage shaft 6 can be assembled in the linkage hole 47, so that two adjacent cover plate bodies can be linked and connected.

In addition, a reinforcing part 44 is connected between the operation part 42 and the rotation part 41 to improve the mechanical strength of the cover plate 4; the cover plate body on the side opposite to the rotating part 41, the operating part 42 and the reinforcing part 44 is used as a plane area 45, the cover plate 4 covers the accommodating groove 14, the plane area 45 keeps flat with the outside of the shell 1, and one end of the plane area 45 is used as a limiting part 46 to be in limiting fit with the handle mechanism 2, namely the limiting part 46 is positioned at one end of the plane area 45 close to the handle mechanism 2. When the handle mechanism 2 is rotated to the on position, the handle mechanism 2 is positioned above the stopper 46, and the handle mechanism 2 restricts the cover plate 4 from being opened.

It should be noted that, in this structure, the rotating portion 41 of the cover plate 4 is rotatably connected to the housing 1 on the side close to the handle mechanism 2, and the operating portion 42 is located on the side away from the handle mechanism 2, but the connection manner of the cover plate 4 is not limited to this, that is, the rotating portion 41 may be connected to the housing 1 on the side away from the handle mechanism 2, and at this time, the operating portion 42 is located on the side close to the handle mechanism 2, and at this time, the limiting portion 46 and the operating portion 42 are located on the same end of the cover plate body, or the operating portion 42 may also serve as the limiting portion 46, so that when the handle mechanism 2 rotates to the on position, the handle mechanism 2 may also limit the cover plate 4 to be opened, and when the handle mechanism 2 swings to the off position, the cover plate 4 may be opened.

A second embodiment of the cover plate 4 is provided with reference to fig. 12, where the cover plate 4 includes a cover plate body, the same as the first embodiment of the cover plate 4, and a rotating portion 41 and an operating portion 42 are convexly provided at two ends of the same side of the cover plate body, where the rotating portion 41 is the same as the first embodiment of the cover plate 4, the cover plate body at the side opposite to the operating portion 42 and the rotating portion 41 is a planar area 45, a limiting portion 46 is formed at one end of the planar area 45, and different from the first embodiment of the cover plate 4, a reinforcing portion 44 is not provided between the operating portion 42 and the rotating portion 41, the operating portion 42 of the embodiment is an arc-shaped boss, a concave surface of the arc-shaped boss is used as the operating surface 421 facing the rotating portion 41, an arc-shaped outer side wall of the arc-shaped boss is used as the pushing surface 422, that is, the side opposite to the concave surface is used as the pushing surface 422 and is provided with an anti-slip ridge; the operation portion 42 is provided with a linking hole 47 similar to that of the first embodiment.

A third embodiment of the cover plate 4 is provided with reference to fig. 13, where the cover plate 4 includes a cover plate body, a rotating portion 41 and an operating portion 42 are disposed at two ends of the same side of the cover plate body, and a reinforcing portion 44 is also disposed between the rotating portion 41 and the operating portion 42, the operating portion 42 of this embodiment is an annular boss with the same width, that is, the width of the pushing surface 422 of the operating portion 42 is the same as the width of the operating portion 42 on the side close to the rotating portion 41, and it can also be understood that the width of the whole operating portion 42 is similar to the width of the end surface of the operating end 11, which is beneficial to improve the mechanical strength of the operating portion 42, and other structures of the cover plate 4 are the same as those of the first embodiment of the cover plate 4, that is, the rotating portion 41, the mounting groove 411, the limiting portion 46, and the planar area 45 are all the same as those of the first embodiment.

A fourth embodiment of the cover plate 4 is provided with reference to fig. 14, where the cover plate 4 includes a cover plate body, a rotating portion 41 and an operating portion 42 are disposed at two ends of the same side of the cover plate body, and as the second embodiment, a reinforcing portion 44 is not disposed between the rotating portion 41 and the operating portion 42, the operating portion 42 of this embodiment is a planar boss with the same width, a certain included angle may be formed between the planar boss and the cover plate body, a side wall of the planar boss forming the included angle with the cover plate body serves as an operating surface 421, in this embodiment, the planar boss is perpendicular to the cover plate body, and a side wall of the planar boss perpendicular to the cover plate body serves as the operating surface 421.

Another structure (not shown) of the housing 1 is provided, the housing 1 is no longer provided with the receiving slot 14 at the operation end 11 of the housing 1, at this time, the three cover plates 4 are rotatably connected to the housing 1 at the side of the handle mechanism 2, that is, the rotating portion 41 is rotatably connected to the housing 1 at the side of the handle mechanism 2, preferably, a groove or a through hole is provided at the end surface of the operation end 11, so that the rotating portion 41 is connected to the inside of the housing 1, and the cover plate body is located outside the housing 1, and the operation portion 42 is located at the side opposite to the end surface of the operation end 11, of course, when the operation portion 42 can also be arranged at the side facing the end surface of the operation end 11, a certain gap is reserved between the end surface of the operation end 11 and the cover plate 4, or, one end of the cover plate 4 extends to the outside of the housing 1 along a direction parallel to the end surface of the operation end 11, and the area of the cover plate 4 extending to the outside of the housing 1 is provided with the protruding operation portion 42.

Referring to fig. 5, a second embodiment of a plug-in circuit breaker is provided, the plug-in circuit breaker comprises a housing 1, at least two parallel accommodating cavities are arranged in the housing 1, a circuit breaker pole is assembled in each accommodating cavity, that is, at least one partition plate is arranged in the housing 1, and the space in the housing 1 is divided into two accommodating cavities by the partition plate, or each circuit breaker pole comprises a circuit breaker pole housing 1, the space in each circuit breaker pole housing 1 is used as one accommodating cavity, and the housing 1 is formed by splicing a plurality of circuit breaker pole housings 1; each circuit breaker pole comprises an operating mechanism 7, handle mechanisms 2 and a locking mechanism in the embodiment of the plug-in circuit breaker, the handle mechanisms 2 of two adjacent circuit breaker poles are in linkage connection, thus, the handle mechanisms 2 which are parallel are rotatably assembled at the operating end 11 of the shell 1, an accommodating groove 14 is formed in the end surface of the operating end 11 on one side of at least one handle mechanism 2, the accommodating groove 14 is correspondingly covered by one cover plate 4, and the operating parts 42 of two adjacent cover plates 4 are in linkage connection through the linkage shaft 6. Certainly, preferably, an accommodating groove 14 is formed in the end face of the operating end 11 on one side of each handle mechanism 2, each accommodating groove 14 corresponds to one accommodating cavity, each accommodating groove 14 is covered by one cover plate 4, each operating portion 42 is provided with a linkage hole 47, a linkage shaft 6 is assembled in each linkage hole 47, two adjacent cover plates 4 can be connected in a linkage manner through the linkage shafts 6, and all the cover plates 4 can be lifted and pulled simultaneously to pull out the circuit breaker from the cabinet.

In this embodiment, the inner side wall structure of each accommodating cavity is the same as the inner side wall structure of the housing 1 in the above embodiment of the plug-in circuit breaker, and is provided with a first connecting portion 161 and a second connecting portion 162, wherein the first connecting portion 161 is correspondingly provided with a through hole for linkage connection of the handle linkage shafts 6 of the two adjacent handle mechanisms 2, in addition, the side wall of the accommodating cavity is also provided with an avoiding hole, and the connecting shafts of the two adjacent operating mechanisms 7 pass through the avoiding hole for linkage connection; at least two parallel limiting holes 13 are formed in the side wall of one side of the shell 1, each limiting hole 13 corresponds to one accommodating cavity, and the locking portion 321 in each breaker pole is correspondingly matched with the limiting hole 13.

In connection with fig. 7, a third embodiment of a plug-in circuit breaker is provided, which comprises a housing 1, a handle mechanism 2 and an operating mechanism 7, which are identical to the first or second embodiment, wherein a receiving groove 14, which is identical to the first or second embodiment, can be provided at an operating end 11 of the housing 1, and the receiving groove 14 is covered by a cover plate 4 in the above-mentioned embodiment.

What is different from the above embodiment is that the locking mechanism correspondingly disposed below the accommodating groove 14 includes an unlocking member 31 and an elastic member 33, the unlocking member 31 is rotatably assembled between the handle mechanism 2 and the limiting hole 13, the unlocking member 31 is provided with a first unlocking portion 311 and a locking portion 321, the elastic member 33 drives the unlocking member 31 to make the locking portion 321 extend out of the limiting hole 13, the handle mechanism 2 drives the unlocking member 31 to rotate through the first unlocking portion 311 to make the locking portion 321 retract into the housing 1, and at this time, the cover plate 4 can be rotated to the open position.

As shown in fig. 9, the unlocking member 31 includes a first rotating arm and a second rotating arm, the first rotating arm and one end of the second rotating arm are connected to form a rotating portion 41, the other end of the first rotating arm is used as a first unlocking portion 311 to be matched with the first driving portion 21 of the handle mechanism 2, and the other end of the second rotating arm is provided with a protruding platform as a locking portion 321 in a protruding manner.

In addition, in the present embodiment, the handle mechanism 2 drives the locking member 32 to retract the locking portion 321 into the housing 1 through the unlocking member 31, as another structure of the present embodiment, the handle mechanism 2 may also directly drive the locking member 32, the locking mechanism includes the locking member 32 and the elastic member 33, the locking member 32 is movably disposed and provided with the locking portion 321, the elastic member 33 drives the locking member 32 to move to extend the locking portion 321 out of the limiting hole 13, the rotation of the handle mechanism 2 applies an acting force to the locking member 32, and the locking member 32 is forced to move to unlock the locking mechanism when the locking member 321 retracts into the housing 1. Alternatively, the handle mechanism 2 may be unlocked by a plurality of unlocking member drives the locking member 32.

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

The foregoing is a more detailed description of the present invention, taken in conjunction with specific preferred embodiments thereof, and it is not intended that the invention be limited to the specific embodiments thereof. 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 a plug-in circuit breaker, includes shell (1), rotates at operation end (11) of shell (1) and is equipped with handle mechanism (2), is provided with operating device (7) and locking mechanical system in shell (1), and handle mechanism (2) and operating device (7) linkage are in order to drive circuit breaker divide-shut brake, its characterized in that: holding tank (14) have been seted up at operation end (11) terminal surface of shell (1), holding tank (14) are closed by apron (4) lid of being connected with shell (1) rotation, apron (4) are equipped with operating portion (42), and apron (4) rotate between retrieving the position and opening the position, and when apron (4) rotated the retrieval position, the lid closed holding tank (14) and operating portion (42) and is close to operation end (11) terminal surface, and when apron (4) rotated the opening position, operation end (11) terminal surface was kept away from in operating portion (42) was used for drawing the circuit breaker.

2. Plug-in circuit breaker according to claim 1, characterized in that: when the cover plate (4) rotates to the recovery position, the cover plate (4) is parallel to the end face of the operation end (11) of the shell (1), and when the cover plate (4) rotates to the opening position, the cover plate (4) is perpendicular to the end face of the operation end (11).

3. Plug-in circuit breaker according to claim 1, characterized in that: one side of the cover plate (4) is a plane area (45), and after the accommodating groove (14) is covered, the plane area (45) and the end face of the operation end (11) are kept flat.

4. Plug-in circuit breaker according to claim 1, characterized in that: the operating part (42) is provided with a linkage hole (47), and a linkage shaft (6) is assembled in the linkage hole (47) and used for linkage connection of two adjacent cover plates (4).

5. Plug-in circuit breaker according to claim 1, characterized in that: the operation part (42) is arranged on one side, facing the end face of the operation end (11), of the cover plate (4) in a protruding mode, an operation face (421) used for exerting drawing force is arranged, and when the cover plate (4) covers the accommodating groove (14), the operation part (42) is accommodated in the accommodating groove (14).

6. Plug-in circuit breaker according to claim 1, characterized in that: a rotating part (41) is arranged at one end of the cover plate (4) far away from the operating part (42), and the rotating part (41) is rotationally connected with the inner side wall of the accommodating groove (14).

7. Plug-in circuit breaker according to claim 1, characterized in that: and a return spring (5) is arranged between the cover plate (4) and the shell (1), and the return spring (5) drives the cover plate (4) to rotate towards the direction of the recovery position.

8. Plug-in circuit breaker according to claim 1, characterized in that: the operating end (11) of shell (1) rotates and is equipped with a plurality of handle mechanism (2) that parallel, and two adjacent handle mechanism (2) linkage are connected, have seted up one holding tank (14) at operating end (11) terminal surface of one of them handle mechanism (2) one side at least, and every holding tank (14) have covered respectively and have closed one apron (4), and operating portion (42) of two adjacent apron (4) are through universal driving shaft (6) linkage connection.

9. The plug-in circuit breaker according to claim 1, characterized in that: the cover plate (4) is provided with a limiting part (46), and when the handle mechanism (2) rotates to the switching-on position, the handle mechanism (2) is matched with the limiting part (46) to enable the cover plate (4) not to rotate to the opening position from the recovery position.

10. Plug-in circuit breaker according to claim 9, characterized in that: when the cover plate (4) rotates to the opening position, the cover plate (4) limits the handle mechanism (2) to ensure that the handle mechanism (2) cannot rotate to the switching-on position from the switching-off position.

11. Plug-in circuit breaker according to one of claims 1 to 10, characterized in that: handle mechanism (2) are equipped with first drive division (21), handle mechanism (2) can rotate closing position, separating brake position and unblock position, separating brake position is located between closing brake position and the unblock position, and when handle mechanism (2) rotated to closing brake position, handle mechanism (2) closed a floodgate through operating device (7) drive circuit breaker, and when handle mechanism (2) rotated to separating brake position, handle mechanism (2) opened a floodgate through operating device (7) drive circuit breaker, when handle mechanism (2) rotated to unblock position from separating brake position, the unblock of first drive division (21) drive locking mechanical system.

12. A plug-in circuit breaker according to claim 11, characterized in that: shell (1) lateral wall is equipped with spacing hole (13), locking mechanical system is including unlocking piece (31), locking piece (32) and elastic component (33), locking piece (32) are equipped with latching portion (321), make locking portion (321) stretch out spacing hole (13) by elastic component (33) drive locking piece (32), unlocking piece (31) rotate and assemble between locking piece (32) and handle mechanism (2), unlocking piece (31) are equipped with first unlocking portion (311) and third drive division (313), drive unlocking piece (31) rotation by first drive division (21) and first unlocking portion (311) cooperation drive, make cooperation of third drive division (313) and locking piece (32) (322) cooperate in order to drive latching portion (321) to retract in shell (1).

13. Plug-in circuit breaker according to claim 12, characterized in that: the unlocking piece (31) comprises a first rotating arm and a second rotating arm, wherein the first rotating arm and one end of the second rotating arm are connected to form a rotating part (41), the end part of the other end of the first rotating arm serves as a first unlocking part (311) to be matched with a first driving part (21) of the handle mechanism (2), and the other end of the second rotating arm serves as a third driving part (313) to be abutted against a matching part (322) of the locking piece (32).

14. A plug-in circuit breaker according to claim 11, characterized in that: shell (1) lateral wall is equipped with spacing hole (13), locking mechanical system is including deblocking spare (31) and elastic component (33), deblocking spare (31) rotate to assemble between handle mechanism (2) and spacing hole (13), deblocking spare (31) are provided with first deblocking spare (311) and locking part (321), drive deblocking spare (31) by elastic component (33) and make locking part (321) stretch out spacing hole (13), cooperate drive deblocking spare (31) to rotate by first drive division (21) and first deblocking spare (311), make locking part (321) retract in shell (1).

15. The plug-in circuit breaker according to claim 14, characterized in that: the unlocking piece (31) comprises a first rotating arm and a second rotating arm, one end of the first rotating arm is connected with one end of the second rotating arm to form a rotating part (41), the other end of the first rotating arm is used as a first unlocking part (311) to be matched with a first driving part (21) of the handle mechanism (2), and the other end of the second rotating arm is convexly provided with a boss used as a locking part (321).

16. Plug-in circuit breaker according to claim 1, characterized in that: the side wall of the shell (1) is provided with a guide groove (17), and the opening direction of the guide groove (17) faces to the wiring terminal (12) of the shell (1).

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