CN211828660U - Plug-in circuit breaker - Google Patents

Abstract

A plug-in circuit breaker is characterized in that a button for driving the circuit breaker to be switched on and switched off is arranged on a shell, a pulling-proof locking mechanism is arranged in the shell and comprises a unlocking piece, a pulling-proof locking piece and a pulling-proof elastic piece, the pulling-proof locking piece is provided with a pulling-proof boss capable of extending out of a pulling-proof groove hole of the shell, the pulling-proof locking piece is linearly and slidably arranged in a pulling-proof sliding groove in the shell, and the pulling-proof elastic piece is connected with the pulling-proof locking piece to drive the pulling-proof boss to extend out of the pulling-proof; the unlocking piece is rotatably installed in the shell, one end of the unlocking piece is matched with the button, the other end of the unlocking piece is matched with the anti-pulling locking piece, the button is continuously pulled after the breaker is opened, the button driving unlocking piece rotates to act on the anti-pulling locking piece, the anti-pulling locking piece overcomes the elastic force of the anti-pulling elastic piece to enable the anti-pulling lug boss to retract into the shell, the breaker is prevented from being pulled out in an electrified mode under a closing state, and the breaker can be prevented from falling out of the cabinet due to vibration under the opening state.

Description

Plug-in circuit breaker

Technical Field

The utility model relates to a low-voltage apparatus, concretely relates to bayonet circuit breaker.

Background

The safety of electrical apparatus can effectively be improved in the use of circuit breaker, and in order to satisfy the installation needs of different electrical equipment, plug-in circuit breaker's structure develops to the miscellaneous, and along with electrical equipment's miniaturized development trend, the overall structure and the operation mode of the circuit breaker of adaptation all need further upgrade.

The existing plug-in circuit breaker can be connected with a circuit by being plugged into a cavity type working position of a cabinet, and if the plug-in circuit breaker is directly pulled out in a closing state after being plugged, a large potential safety hazard exists, and the plug-in circuit breaker is prevented from being pulled out in the closing state. In addition, if the plug-in circuit breaker is in a closing state before being plugged, the plug-in circuit breaker is plugged into a working position of the cabinet to conduct a circuit, and potential safety hazards exist.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome prior art's defect, provide a simple structure, plug-in circuit breaker that the reliability is high.

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

a plug-in circuit breaker comprises a shell, wherein a button used for driving the opening and closing of the circuit breaker is arranged on the shell, a locking device is arranged in the shell and comprises an anti-pulling locking mechanism, the anti-pulling locking mechanism comprises an unlocking piece, an anti-pulling locking piece and an anti-pulling elastic piece, the anti-pulling locking piece is provided with an anti-pulling boss capable of extending out of an anti-pulling slotted hole of the shell, the anti-pulling locking piece is linearly and slidably installed in an anti-pulling chute on the shell, and the anti-pulling elastic piece is connected with the anti-pulling locking piece to drive the anti-pulling boss to extend out of the anti-pulling slotted; the unlocking piece rotates to be installed in the shell, one end cooperates with the button, and the other end cooperates with the anti-pulling locking piece, and after the circuit breaker is opened, the button continues to be drawn, and button drive unlocking piece rotates and is used in the anti-pulling locking piece, prevents pulling out the elasticity messenger that the locking piece overcome the anti-pulling elastic component and prevents pulling out in the boss withdrawal shell.

Preferably, the button comprises a button part and an indicating part, a cavity for accommodating the indicating part is formed in the button part, an observation window for observing the indicating part is formed in the button part, a driving part matched with the anti-pulling locking mechanism is arranged on the indicating part, the button is continuously pulled after the circuit breaker is opened, and the driving part of the indicating part drives the unlocking part to rotate so that the anti-pulling boss retracts into the shell.

Preferably, the button comprises a button piece, a driving protrusion matched with the anti-pulling locking mechanism is arranged on the button piece, the button is continuously pulled after the circuit breaker is opened, and the driving protrusion of the button piece drives the unlocking piece to rotate so that the anti-pulling boss retracts into the shell.

Preferably, the locking device further comprises an anti-closing locking mechanism, the anti-closing locking mechanism is provided with an anti-closing boss, the anti-closing boss can extend out of an anti-closing slot hole of the shell or retract into the shell, and when the anti-closing boss of the anti-closing locking mechanism extends out of the anti-closing slot hole, the anti-closing locking mechanism limits the indicator, so that the button cannot drive the circuit breaker to be switched from the opening state to the closing state; when the anti-closing boss retracts into the shell, the anti-closing locking mechanism releases the limit of the indicating piece, so that the button can drive the circuit breaker to be switched from an opening state to a closing state.

Preferably, the indicating piece comprises a rotating shaft and an indicating part for indicating the opening and closing conditions of the circuit breaker, the indicating piece is mounted on the button piece through the rotating shaft, the indicating part extends into the cavity, and when the button piece is pulled or pressed to drive the opening and closing of the circuit breaker, the indicating piece rotates around the rotating shaft, so that different areas of the indicating part correspond to the observation windows; one end of a rotating shaft of the indicating piece is exposed out of the button piece, one end of the rotating shaft, which is exposed out of the button piece, is provided with a locking block, and the locking block is provided with a limiting part matched with the closing-preventing locking mechanism and a driving part matched with the pulling-preventing locking mechanism.

Preferably, the anti-closing locking mechanism comprises an anti-closing locking piece and an anti-closing elastic piece, the anti-closing locking piece is rotatably installed in the shell, one end of the anti-closing locking piece is provided with an anti-closing boss, the other end of the anti-closing locking piece is provided with an anti-closing limiting part in limiting fit with the indicating piece, the anti-closing elastic piece and the anti-closing locking piece are connected to drive the anti-closing locking piece to rotate towards one side, so that the anti-closing limiting part and the indicating piece are in limiting fit, a button cannot drive the circuit breaker to close, and the anti-closing boss extends; the pressing of the anti-closing boss can drive the anti-closing locking piece to overcome the elasticity of the anti-closing elastic piece and rotate to the other side, so that the anti-closing boss retracts into the shell, and the limit of the anti-closing limiting part and the indicating piece is released.

Preferably, the direction of preventing pulling out locking piece rectilinear movement is perpendicular to the installation of circuit breaker and is inserted the direction, prevent pulling out the locking piece and be equipped with in the one side that is close to preventing pulling out the slotted hole and prevent pulling out the boss, prevent pulling out boss one side be equipped with unblock piece complex linkage step.

Preferably, the anti-pulling locking piece is provided with a convex sliding block, the corresponding position of the anti-pulling sliding groove of the shell is provided with a sliding block groove, the anti-pulling elastic piece is a torsion spring, and the bottom side of the anti-pulling locking piece is provided with a convex side edge of an elastic arm of the limiting torsion spring.

Preferably, a driving boss is arranged on one side of the locking block, a closing prevention limiting step is formed below the driving boss on one side of the locking block to serve as a limiting part, and a driving inclined plane is formed above the driving boss to serve as a driving part.

Preferably, along the direction of rotation when the rotating shaft is opened, the distance from the driving inclined plane to the axis of the rotating shaft is gradually increased.

Preferably, the locking block is provided with a first driven end and a second driven end which are spaced at the other side adjacent to the driving boss; the unlocking piece is provided with a protruding indication driving part, the indication driving part extends between the first driven end and the second driven end, when the button piece is pressed to drive the breaker to be switched on, the first driven end is matched with the indication driving part to enable the indication piece to rotate, the area of the indication part indicating the switch-on state corresponds to the observation window, when the button piece is pulled to drive the breaker to be switched off, the second driven end is matched with the indication driving part to enable the indication piece to rotate, and the area of the indication part indicating the switch-off state corresponds to the observation window.

Preferably, the locking block is provided with a first driven end and a second driven end which are spaced at the other side adjacent to the driving boss; be equipped with bellied shell indication drive division on the shell, shell indication drive division stretches to between first driven end and the second driven end, when pressing button drive circuit breaker combined floodgate, first driven end and shell indicate drive division cooperation to make indicator rotate, make the region that indicator instructed the combined floodgate state correspond with the observation window, when pulling button drive circuit breaker separating brake, the cooperation of second driven end and shell indication drive division makes indicator rotate, make the region that indicator instructed the separating brake state correspond with the observation window.

Preferably, the unlocking piece is located between button and the shell, and the middle part is rotated the installation in the shell, the one end that the unlocking piece corresponds the indicator is equipped with the bending end, the one end that the unlocking piece corresponds the anti-pulling locking piece is equipped with and prevents pulling locking piece complex extension end, one side that the unlocking piece middle part corresponds its rotation axle center is equipped with bellied instruction drive division.

Preferably, prevent that combined floodgate locking piece middle part be equipped with and prevent combined floodgate rotating part, one end is equipped with to the bellied boss of preventing combined floodgate in one side, and the other end is equipped with prevents spacing portion of combined floodgate, prevent that combined floodgate elastic component be the torsional spring, prevent that spacing portion one side of combined floodgate is equipped with the location arch, the torsional spring is installed in the shell, the elastic arm of one end presses on the location arch, the other end card is in the shell.

Preferably, the unlocking piece and the closing prevention locking piece are coaxially arranged.

The utility model discloses a plug-in circuit breaker, be equipped with through preventing pulling out the locking mechanical system that prevents pulling out of elastic component straight line slidable mounting in the shell, prevent pulling out the equal drive of elastic component and preventing pulling out the boss and stretch out and prevent pulling out the slotted hole under circuit breaker combined floodgate state and separating brake state, make under combined floodgate state, plug-in circuit breaker can't be followed the operating position of rack and extracted, prevent electrified circuit breaker of pulling out, and can prevent that the circuit breaker from falling out because vibrations follow the rack at in-process such as transportation under separating brake state, when the circuit breaker need be pulled out under separating brake state, through drawing the button through the drive of deblocking piece prevent pulling out the locking piece, make prevent pulling out in the boss withdrawal shell, make the circuit breaker normally extract, improve the security of.

In addition, plug-in circuit breaker still is equipped with prevents closing a floodgate locking mechanical system, prevents that closing a floodgate locking mechanical system is spacing to the button, makes the unable drive circuit breaker of button switch over from the separating brake state to closing a floodgate state, makes plug-in circuit breaker just can close a floodgate after installing the rack, prevents to insert the rack under closing a floodgate state, improves circuit breaker's security.

In addition, through the cooperation of the indicating piece, the anti-pulling locking mechanism and the anti-closing locking mechanism, the indication of the opening and closing state of the circuit breaker is realized, and meanwhile, the hot plugging prevention of the circuit breaker is realized so as to simplify the structure. Especially the locking piece setting of indicator is in one side of pivot, when pressing and drawing the button, the indicator moves down along with the button and rotates simultaneously with the in-process that shifts up, when making the drive inclined plane of the conduct drive division of indicator and the cooperation of deblocking spare, there is thrust and rotation simultaneously, it is more smooth-going to make whole process, the moment of drive deblocking spare has also been increased through the drive inclined plane in the rotation of indicator simultaneously, just can make deblocking spare rotate great angle in less space, the space that occupies the circuit breaker has been reduced, do benefit to the miniaturized design of circuit breaker.

Drawings

Fig. 1 is an overall structural view of the circuit breaker of the present invention;

fig. 2 is a schematic structural view of the locking state of the anti-closing locking mechanism of the circuit breaker of the present invention;

fig. 3 is a schematic structural view of the circuit breaker in an unlocked state of the anti-closing locking mechanism;

fig. 4 is a diagram of the structure of the circuit breaker of the present invention in which the button, the indicator and the anti-closing locking member are engaged;

fig. 5 is a schematic structural view of the anti-pulling locking mechanism of the circuit breaker according to the present invention in a locked state;

fig. 6 is a schematic structural view of the circuit breaker in an unlocked state of the anti-pulling locking mechanism;

fig. 7 is a structure diagram of the anti-pulling locking piece and the housing of the circuit breaker of the present invention.

Detailed Description

The following describes the circuit breaker according to the present invention with reference to the embodiments shown in fig. 1 to 7. The circuit breaker of the present invention is not limited to the description of the following embodiments.

As shown in fig. 1, the utility model discloses an insert circuit breaker includes shell 2, button mechanism, the operating device 9 of being connected with the button mechanism drive, the moving contact that links to each other with operating device 9, the static contact that sets up relatively with the moving contact, generally still include but not limited to) short-circuit protection mechanism, arc control device, overload protection mechanism, the connecting device that is qualified for the next round of competitions, not shown in the spare part picture that inlet wire connecting device and other circuit breakers had, button mechanism drive operating device 9 drives the moving contact and the contact switching-on of static contact, or drive operating device 9 drives the moving contact and the separation separating brake of static contact.

Still be equipped with locking device in the plug-in circuit breaker, be equipped with on shell 2 with locking device complex prevent pulling out slotted hole 22, be equipped with the spacing hole of rack on the sheet metal component of the rack operating position that plug-in circuit breaker inserted and refer to figure 1), when plug-in circuit breaker installs to the operating position, plug-in circuit breaker prevent pulling out slotted hole 22 and the spacing hole of rack correspond, when plug-in circuit breaker installation is not installed to the operating position, plug-in circuit breaker prevent pulling out slotted hole 22 and the spacing hole dislocation of rack, the rack sheet metal component can shelter from the spacing hole of rack, this is the prior art in this field, no longer describe herein.

The button mechanism comprises a button 1, a connecting rod and a driving piece 8, the button 1 triggers the driving piece 8 to act through the connecting rod, and the driving piece 8 is rotatably arranged in the shell 2 and is connected with an operating mechanism 9; pressing button 1, button 1 drives driving piece 8 through the connecting rod and rotates to one side, and driving piece 8 drives operating device 9 through U type pole 8 and drives moving contact and static contact realization combined floodgate, draws button 1, and button 1 drives driving piece 8 through the connecting rod and rotates to the opposite side, and driving piece 8 drives operating device 9 through U type pole 8 and drives moving contact and static contact separation realization separating brake. The driving part 8 has a function similar to that of a handle of a traditional miniature circuit breaker, the operating mechanism usually comprises a contact support connected with the moving contact, a lock catch and a trip catch, the short-circuit protection mechanism and the overload protection mechanism are arranged corresponding to the lock catch of the operating mechanism, and when a short circuit or overload occurs, the short-circuit protection mechanism and the overload protection mechanism respectively act on the lock catch to enable the operating mechanism to be tripped, so that the circuit breaker is separated from the brake to realize protection.

An improvement point of the utility model is that the locking device comprises an anti-pulling locking mechanism, the anti-pulling locking mechanism comprises an unlocking piece 5, an anti-pulling locking piece 6 and an anti-pulling elastic piece 7, the anti-pulling locking piece 6 is provided with an anti-pulling boss 62 capable of extending out of the anti-pulling slot hole 22 of the shell 2, the anti-pulling locking piece 6 is linearly and slidably arranged in an anti-pulling chute on the shell 2, and the anti-pulling elastic piece 7 is connected with the anti-pulling locking piece 6 to drive the anti-pulling boss 62 to extend out of the anti-pulling slot hole 22; unlocking piece 5 rotates and installs in shell 2, and one end cooperates with button 1, and the other end with prevent pulling out locking piece 6 cooperation, after the circuit breaker separating brake, continue to draw button 1, and button 1 drive unlocking piece 5 rotates and is used in preventing pulling out locking piece 6, prevents pulling out locking piece 6 and overcomes the elasticity messenger that prevents pulling out elastic component 7 and prevent pulling out in boss 62 withdrawal shell 2. The utility model discloses a plug-in circuit breaker, be equipped with through preventing pulling out the locking mechanical system that prevents pulling out of elastic component straight line slidable mounting in the shell, prevent pulling out the equal drive of elastic component and preventing pulling out the boss and stretch out and prevent pulling out the slotted hole under circuit breaker combined floodgate state and separating brake state, make under combined floodgate state, plug-in circuit breaker can't be followed the operating position of rack and extracted, prevent electrified circuit breaker of pulling out, and can prevent that the circuit breaker from falling out because vibrations follow the rack at in-process such as transportation under separating brake state, when the circuit breaker need be pulled out under separating brake state, through drawing the button through the drive of deblocking piece prevent pulling out the locking piece, make prevent pulling out in the boss withdrawal shell, make the circuit breaker normally extract, improve the security of.

Further, the locking device further comprises an anti-closing locking mechanism, the anti-closing locking mechanism is provided with an anti-closing boss 33, the anti-closing boss 33 can extend out of the anti-closing slot hole 23 of the shell 2 or retract into the shell 2, and when the anti-closing boss 33 of the anti-closing locking mechanism extends out of the anti-closing slot hole 23, the anti-closing locking mechanism limits the button 1, so that the button 1 cannot drive the circuit breaker to be switched from an opening state to a closing state; when the anti-closing boss 33 retracts into the housing 2, the anti-closing locking mechanism releases the limit of the button 1, so that the button 1 can drive the circuit breaker to switch from the opening state to the closing state. The plug-in circuit breaker is also provided with a switching-on prevention locking mechanism which is limited to the button, so that the button can not drive the circuit breaker to switch from a switching-off state to a switching-on state, the plug-in circuit breaker can be switched on only after being installed on the cabinet, the cabinet is prevented from being inserted in the switching-on state, and the safety of the circuit breaker is improved.

As an embodiment of unlocking by driving the anti-pulling locking piece 6 through the button 1, the button 1 comprises a button piece 11, a driving protrusion matched with the anti-pulling locking mechanism is arranged on the button piece 11, the button 1 is continuously pulled after the circuit breaker is opened, the driving protrusion of the button piece 11 drives the unlocking piece 5 to rotate, so that the anti-pulling boss 62 retracts into the shell 2, and the anti-pulling locking piece 6 is driven to unlock through the unlocking piece 5 through the body of the button 1.

As a preferred embodiment, the button 1 includes a button 11 and an indicator 12, a cavity for accommodating the indicator 12 is provided inside the button 11, an observation window 111 for observing the indicator 12 is provided on the button 11, a driving portion 123 cooperating with the anti-pulling locking mechanism and a limiting portion 124 cooperating with the anti-closing locking mechanism are provided on the indicator 12, after the circuit breaker is opened, the button 1 is continuously pulled, and the driving portion 123 of the indicator 12 drives the unlocking member 5 to rotate so that the anti-pulling boss 62 retracts into the housing 2. Through the cooperation of the indicating piece, the anti-pulling locking mechanism and the anti-closing locking mechanism, the circuit breaker can be indicated in the opening and closing state, and meanwhile, the circuit breaker can be prevented from being plugged and pulled so as to simplify the structure.

As shown in fig. 2-4, an insertion type circuit breaker includes a housing 2, a button 1 for driving a circuit breaker to open and close is arranged on the housing 2, the button 1 includes a button 11 and an indicator 12, the button 11 is located in a button mounting groove of the housing 2, a cavity for accommodating the indicator 12 is arranged inside the button 11, an observation window 111 for observing the indicator 12 is arranged on the upper portion of the button 11, the indicator 12 includes a rotating shaft 122 and an indicating part 125 for indicating the condition of opening and closing of the circuit breaker, the indicator 12 is mounted on the button 11 through the rotating shaft 122, the indicating part 125 extends into the cavity, when the button 11 is pulled or pressed to drive the opening and closing of the circuit breaker, the indicator 12 rotates around the rotating shaft 122, so that different areas of the indicating part 125 correspond to the observation window 111.

As shown in fig. 2-4, in the preferred embodiment of the indicating member 12, the indicating member 12 includes a connecting rod 127, one end of the connecting rod 127 is provided with an indicating portion 125, the other end is provided with a rotating shaft 122, the rotating shaft 122 is installed in the installation slot 112 of the button member 11, the indicating portion 125 extends into the cavity of the button member 11, one end of the rotating shaft 122 is exposed outside the button member 11, and one end of the rotating shaft 122 exposed outside the button member 11 is provided with a locking block 126 engaged with the locking mechanism. The locking block 126 is provided with a limiting part 124 matched with the anti-closing locking mechanism and a driving part 123 matched with the anti-pulling locking mechanism. Preferably, the limiting portion 124 is a closing prevention limiting step, and the driving portion 123 is a driving inclined surface. As shown in fig. 4, a driving boss 121 is provided at one side of the locking block 126, a closing prevention limit step is formed as a limit part 124 below the driving boss 121 at one side of the locking block 126, and a driving inclined surface is formed as a driving part 123 above the driving boss 121, and more preferably, the distance from the driving inclined surface to the axis of the rotating shaft is gradually increased along the rotating direction when the rotating shaft 122 is opened. The locking piece setting of indicator is in one side of pivot, when pressing and drawing the button, the indicator moves down along with the button and rotates simultaneously with the in-process that shifts up, when making the drive inclined plane of the conduct drive division of indicator and the cooperation of deblocking piece, there is thrust and rotation simultaneously, it is more smooth-going to make whole process, the moment of drive deblocking piece has also been increased through the drive inclined plane in the rotation of indicator simultaneously, just can make deblocking piece rotate great angle in less space, the space that occupies the circuit breaker has been reduced, do benefit to the miniaturized design of circuit breaker.

One solution for driving the indicator to rotate during opening and closing is to indicate the driving part through a housing provided on the housing 2. As shown in fig. 4, the locking block 126 is provided with a first passive end 129 and a second passive end 128 spaced apart on the other side adjacent to the driving boss 121; the shell 2 is provided with a raised shell indication driving part, the shell indication driving part extends between the first driven end 129 and the second driven end 128, when the button 11 is pressed to drive the breaker to be switched on, the first driven end 129 is matched with the shell indication driving part to enable the indicator 12 to rotate, the area of the indication part 125 indicating the switch-on state corresponds to the observation window 111, when the button 11 is pulled to drive the breaker to be switched off, the second driven end 128 is matched with the shell indication driving part to enable the indicator 12 to rotate, and the area of the indication part 125 indicating the switch-off state corresponds to the observation window 111. After the circuit breaker is opened, the button 1 is pulled continuously, and the driving part 123 of the indicator 12 drives the unlocking piece 5 to rotate so that the pulling-proof boss 62 retracts into the shell 2.

In a preferred embodiment, the indication member is driven to rotate by an indication driving part 53 provided on the unlocking member 5 when the switch is opened and closed. 4-6, the lock block 126 is provided with spaced first and second passive ends 129, 128 on the other side adjacent the drive boss 121; the unlocking part 5 is provided with a convex indication driving part 53, the indication driving part 53 extends between a first driven end 129 and a second driven end 128, when the button 11 is pressed to drive the breaker to be switched on, the first driven end 129 is matched with the indication driving part 53 to enable the indication part 12 to rotate, the area of the indication part 125 indicating the switch-on state corresponds to the observation window 111, when the button 11 is pulled to drive the breaker to be switched off, the second driven end 128 is matched with the indication driving part 53 to enable the indication part 12 to rotate, and the area of the indication part 125 indicating the switch-off state corresponds to the observation window 111.

Preferably, the indicating part 125 is an arc plate with an area larger than that of the observation window 111, the surface of the indicating part 125 close to the observation window 111 is divided into a closing area and an opening area which can be observed through the observation window 111, and the closing area and the opening area can be distinguished by colors or by making corresponding marks, such as letters or graphic marks. The shaft 122 is perpendicular to the connecting rod 44 and perpendicular to the indicating portion 125.

As shown in fig. 4-7, the anti-pulling locking mechanism of the present invention comprises an unlocking member 5, an anti-pulling locking member 6 and an anti-pulling elastic member 7, wherein the anti-pulling locking member 6 is provided with an anti-pulling boss 62 capable of extending out of the anti-pulling slot 22 of the housing 2, the anti-pulling elastic member 7 is connected with the anti-pulling locking member 6 to drive the anti-pulling boss 62 to extend out of the anti-pulling slot 22 in the anti-pulling chute installed on the housing 2 in a linear sliding manner. Unlocking piece 5 rotates and installs in shell 2, and one end cooperates with indicator 12, and the other end with prevent pulling out locking piece 6 cooperation, after the circuit breaker separating brake, continue to draw button 1, and button 1 drive unlocking piece 5 rotates and is used in preventing pulling out locking piece 6, prevents pulling out locking piece 6 and overcomes the elasticity messenger that prevents pulling out elastic component 7 and prevent pulling out in boss 62 withdrawal shell 2.

Specifically, prevent pulling out in the spout of installing on shell 2 that locking piece 6 rectilinear sliding prevents pulling out, prevent pulling out locking piece 6 and be equipped with on the one side that is close to the slotted hole 22 of preventing pulling out and prevent pulling out boss 62, be equipped with on one side of preventing pulling out boss 62 with unblock piece 5 complex linkage step 63. The section of the anti-pulling boss 62 is a right trapezoid or a right triangle, the anti-pulling boss 62 comprises a straight surface and an inclined surface, the straight surface is towards the direction that the cabinet is pulled out of the breaker and the installation insertion direction of the perpendicular to breaker, and the inclined surface is towards the direction that the breaker is inserted into the cabinet.

Unlocking piece 5 is located between button 11 and shell 2, and the middle part is rotated and is installed in shell 2, the one end that unlocking piece 5 corresponds indicator 12 is equipped with bending end 52, with the cooperation of the drive inclined plane as drive division 123, the one end that unlocking piece 5 corresponds anti-pulling locking piece 6 is equipped with and prevents pulling locking piece 6 complex extension end 51, extension end 51 and the linkage step 63 laminating of preventing pulling locking piece 6. Preferably, one side of the middle part of the unlocking piece 5 corresponding to the rotation axis thereof is provided with a convex indication driving part 53 for driving the indication piece 12 to rotate when the circuit breaker is switched on and off so as to indicate the switching-on and off state of the circuit breaker. Prevent pulling out elastic component 7 is the torsional spring, and the elastic arm 71 pressure of torsional spring one end is on preventing pulling out locking piece 6, and the other end card is in shell 2, and under the torsional spring effect, prevent pulling out boss 62 and show outside the circuit breaker, and extension end 51 presss from both sides between linkage step 63 and the circuit breaker shell inner wall.

Preferably, the casing 2 is provided with an anti-pulling slot hole 22 corresponding to the anti-pulling boss 62, the anti-pulling locking member 6 is provided with a convex slider, the corresponding position of the anti-pulling chute of the casing 2 is provided with a slider groove, and the slider groove are matched to play a role in guiding and limiting, so that the anti-pulling locking member 6 can slide more reliably. As shown in fig. 7, the anti-plucking locking member 6 is provided at both sides thereof with sliders 61a and 61b, respectively, at the bottom side of the anti-plucking locking member 6 with protruded sides 64 of the elastic arms 71 for limiting the torsion spring, and at both sides of the anti-plucking sliding groove with slider grooves 21a and 21b, respectively, although it is also possible to provide the anti-plucking locking member 6 with sliding grooves and to provide the anti-plucking sliding groove with protruded sliding guides. Obviously, the anti-pulling elastic member 7 may also adopt a compression spring, a leaf spring or an elastic member of other structure.

When the button 1 is pressed to drive the breaker to be switched to a closing state, the indicating piece 12 moves along with the button 1 and rotates to indicate closing, the driving inclined plane of the indicating piece 12 serving as the driving part 123 avoids the bending end 52 of the unlocking piece 5, the two parts have no force action relation, and the anti-pulling locking piece 6 extends out of the anti-pulling slotted hole 22 under the action of the anti-pulling elastic piece 7, so that the breaker cannot be pulled out of a cabinet in the closing state; as shown in fig. 5, when the circuit breaker is switched to the open state by pulling the button 1, the indicator 12 moves along with the button 1 and rotates to indicate the open state, at this time, the driving inclined plane of the indicator 12 as the driving part 123 is just contacted with the bent end 52 of the unlocking part 5 or has a small gap, the two have no force action relationship, and the anti-pulling locking part 6 extends out of the anti-pulling slot hole 22 under the action of the anti-pulling elastic part 7; as shown in fig. 6, after the circuit breaker is opened, the button member 11 is pulled out continuously, the driving inclined surface of the indicator 12 as the driving part 123 drives the unlocking member 5 to rotate clockwise through the bent end 52, so that the extension end 51 of the unlocking member 5 acts on the linkage step 63 of the anti-pulling locking member 6, the anti-pulling locking member 6 retracts into the housing 2 against the elastic force of the anti-pulling elastic member 7, the locking is released, and the circuit breaker can be normally pulled out from the cabinet.

In the anti-pulling locking mechanism of the present embodiment, the anti-pulling locking member 6 can also be directly connected to the unlocking member 5, and the rotation of the unlocking member 5 drives the anti-pulling boss 62 of the anti-pulling locking member 6 to extend out and retract from the opening of the case 2 outside the circuit breaker. However, when the anti-pulling locking piece 6 is locked with the sheet metal part of the cabinet in a limiting manner, the acting force of the manually-plugged circuit breaker can be transmitted to the indicating piece 12 and the button piece 11, so that unnecessary misoperation can be caused, and the reliability of the circuit breaker is affected. The utility model discloses a prevent pulling out elastic component 7 and prevent pulling out the scheme of locking piece 6, prevent pulling out the 7 drives of elastic component and prevent pulling out 6 spacing locks of locking piece, when preventing pulling out the spacing locking of sheet metal component of locking piece 6 and rack, deblocking spare 5 is dodged to indicator 12, avoids the conduction of power, improves the reliability of circuit breaker. In addition, prevent pulling out locking piece 6 adopt with prevent pulling out spout sliding fit's structure, but non-rotating structure, can avoid artificial plug circuit breaker's effort to conduct shell 2, make shell 2 and the sheet metal component of rack take place the skew to influence the reliability of first incoming line terminal wiring.

As shown in fig. 2 to 4, in the preferred embodiment of the anti-closing locking member 3, the anti-closing locking member 3 cooperates with the indicator 12 to prevent the insertion type circuit breaker from closing when the insertion type circuit breaker is not inserted into the working position of the cabinet, thereby preventing the circuit breaker from switching from the open state to the closed state.

The anti-closing locking mechanism comprises an anti-closing locking piece 3 and an anti-closing elastic piece 4, the anti-closing locking piece 3 is rotatably installed in the shell 2 and located between the button piece 11 and the shell 2, one end of the anti-closing locking piece 3 is provided with an anti-closing boss 33, the other end of the anti-closing locking piece 3 is provided with an anti-closing limiting part 32 in limiting fit with the indicating piece 12, the anti-closing elastic piece 4 and the anti-closing locking piece 3 are connected to drive the anti-closing locking piece 3 to rotate towards one side, so that the anti-closing limiting part 32 is in limiting fit with the indicating piece 12, the button 1 cannot drive the breaker to be closed, and the anti-closing; the pressing of the anti-closing boss 33 can drive the anti-closing locking member 3 to rotate to the other side against the elastic force of the anti-closing elastic member 4, so that the anti-closing boss 33 retracts into the housing, and the limit of the anti-closing limiting portion 32 and the indicating member 12 is released. Preferably, as shown in fig. 4, the anti-closing limiting portion 32 is an anti-closing limiting boss, and is engaged with an anti-closing limiting step position on the indicator 12 as the limiting portion 124.

As shown in fig. 2, the anti-closing elastic member 4 is connected to the anti-closing locking member 3 to drive the anti-closing locking member 3 to rotate to one side, so that the anti-closing limiting portion 32 is in limit fit with the indicator 12, the button 11 cannot be pressed to close, and the anti-closing boss 33 extends out of the anti-closing slot 23 and remains inactive. As shown in fig. 3, the pressing anti-closing boss 33 drives the anti-closing locking member 3 to rotate to the other side against the elastic force of the anti-closing elastic member 4, so that the anti-closing boss 33 retracts into the housing, and the limit of the anti-closing limit portion 32 and the indicator 12 is released, so that the button 11 can press and drive the circuit breaker to close.

Specifically, as shown in fig. 2 to 4, the middle of the anti-closing locking member 3 is provided with an anti-closing rotating portion 31, one end of the anti-closing rotating portion is provided with an anti-closing boss 33 protruding toward one side, the other end of the anti-closing locking member is provided with an anti-closing limiting portion 32, and the anti-closing rotating portion 31 is provided with an anti-closing rotating hole and is installed on a rotating shaft in the housing 2. The anti-closing elastic piece 4 is a torsion spring, a positioning protrusion 34 is arranged on one side of the anti-closing limiting portion 32, the torsion spring is installed in the shell 2, an elastic arm at one end is pressed against the positioning protrusion 34, and the other end is clamped in the shell 2. Obviously, the anti-closing elastic element 4 may also be an elastic element with other structures, such as a compression spring or a reed. The section of the anti-closing boss 33 is a right trapezoid or a right triangle, the anti-closing boss 33 comprises a straight surface and an inclined surface, the straight surface faces the direction in which the cabinet is pulled out of the breaker and the installation insertion direction of the breaker perpendicular to the breaker, and the inclined surface faces the direction in which the breaker is inserted into the cabinet.

Alternatively, the anti-closing locking member 3 may not be engaged with the indicating member to limit closing, and may be engaged with the upper limit step of the button member 11.

Preferably, as shown in fig. 1, the unlocking member 5 is disposed below the closing prevention locking member 3, and the unlocking member and the closing prevention locking member are coaxially disposed and share a rotating shaft, so that space is saved, and the miniaturization design of the circuit breaker is facilitated.

The operation of the locking device of the circuit breaker of the present invention is described below with reference to the embodiments of fig. 1 to 7. As shown in fig. 2, when the circuit breaker is not installed in the operating position of the cabinet, the anti-closing elastic element 4 drives the anti-closing locking element 3 to rotate counterclockwise, so that the anti-closing limiting part 32 is in limiting fit with the anti-closing limiting boss of the indicating element 12, the anti-closing boss 33 extends out of the anti-closing slot 23 and keeps inoperative, and at this time, the button element 11 cannot be pressed down, so that the button element 11 cannot drive the circuit breaker to switch from the open state to the closed state. At the same time, the anti-pulling elastic member 7 also drives the anti-pulling boss 62 of the anti-pulling locking member 6 to extend out of the anti-pulling slot hole 22.

When the circuit breaker is installed in the cabinet, the sheet metal part of the cabinet presses the anti-closing boss 33 and the anti-pulling boss 62, so that the anti-closing boss 33 and the anti-pulling boss 62 return to the shell by overcoming the elasticity of the elastic part, and the circuit breaker can be normally inserted into the working position of the cabinet.

As shown in fig. 3 and 5, when the circuit breaker is installed in the operating position of the cabinet, the sheet metal part of the cabinet presses the anti-closing boss 33, so that the anti-closing locking member 3 rotates clockwise against the counter force of the anti-closing elastic member 4, the anti-closing boss 33 rotates back into the circuit breaker, the anti-closing limiting portion 32 is locked and unlocked with the anti-closing limiting boss of the indicating member 12, at this time, the button 1 is pressed, the circuit breaker is switched from the open state to the closed state, the button 11 and the indicating member 12 can move downward integrally, the circuit breaker is closed when the operating mechanism is driven to operate, and the indicating member 12 rotates under the action of the indication driving portion 53 on the unlocking member 5, so that the closing area on the indicating portion 125 corresponds to the observation window 111. When the circuit breaker is installed in the working position of the cabinet, the anti-pulling boss 62 of the anti-pulling locking piece 6 extends out of the anti-pulling slotted hole 22 and is in spacing fit with the cabinet limiting hole of the cabinet, so that the circuit breaker cannot be pulled out.

When the circuit breaker is in a closing state, the button part 11 is pulled towards a direction far away from the circuit breaker, the button part 11 enables the circuit breaker to be opened through the operating mechanism, the circuit breaker is switched to the opening state from the closing state, the button part 11 drives the indicating part 12 to move together, the indicating part rotates under the action of the indicating driving part 53 on the unlocking part 5, the opening area on the indicating part 125 corresponds to the observation window 111, and at the moment, the driving inclined plane of the indicating part 12 just contacts with the bending end 52 of the unlocking part 5 or has a certain gap.

As shown in fig. 6, when the circuit breaker is in the open state, the button 11 is continuously pulled in the direction away from the circuit breaker, the button 11 drives the indicator 12 to move together, the driving inclined plane of the indicator 12 acts on the lower end face of the bending end 52 of the unlocking piece 5, the unlocking piece 5 is forced to rotate clockwise around the shaft, the extension end 51 acts on the linkage step 63 of the anti-pulling locking piece 6, the locking piece 6 is forced to retract into the circuit breaker along the sliding groove direction by overcoming the counter force of the anti-pulling elastic piece 7, and the locking is released, so that the circuit breaker can be pulled out of the cabinet.

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

Claims (15)

1. The utility model provides a plug-in circuit breaker, includes shell (2), be provided with button (1) that are used for driving circuit breaker divide-shut brake on shell (2), be equipped with locking device, its characterized in that in shell (2):

the locking device comprises an anti-pulling locking mechanism, the anti-pulling locking mechanism comprises an unlocking piece (5), an anti-pulling locking piece (6) and an anti-pulling elastic piece (7), the anti-pulling locking piece (6) is provided with an anti-pulling boss (62) capable of extending out of an anti-pulling groove hole (22) of the shell (2), the anti-pulling locking piece (6) is linearly and slidably arranged in an anti-pulling chute on the shell (2), and the anti-pulling elastic piece (7) is connected with the anti-pulling locking piece (6) to drive the anti-pulling boss (62) to extend out of the anti-pulling groove hole (22);

unlocking piece (5) rotate to be installed in shell (2), one end and button (1) cooperation, the other end with prevent pulling out locking piece (6) cooperation, after the circuit breaker separating brake, continue to draw button (1), button (1) drive unlocking piece (5) rotate and act on preventing pulling out locking piece (6), prevent pulling out locking piece (6) and overcome the elasticity messenger that prevents pulling out elastic component (7) and prevent pulling out in boss (62) withdrawal shell (2).

2. Plug-in circuit breaker according to claim 1, characterized in that: button (1) is including button (11) and indicator (12), the inside cavity that is used for holding indicator (12) that is equipped with of button (11), be equipped with observation window (111) that are used for observing indicator (12) on button (11), be equipped with on indicator (12) with prevent pulling out locking mechanical system complex drive division (123), after the circuit breaker separating brake, continue to draw button (1), drive division (123) drive unlocking piece (5) of indicator (12) rotate and make in preventing pulling out boss (62) withdrawal shell (2).

3. Plug-in circuit breaker according to claim 1, characterized in that: the button (1) comprises a button piece (11), a driving protrusion matched with the anti-pulling locking mechanism is arranged on the button piece (11), the button (1) is continuously pulled after the circuit breaker is opened, and the driving protrusion of the button piece (11) drives the unlocking piece (5) to rotate so that the anti-pulling boss (62) retracts into the shell (2).

4. Plug-in circuit breaker according to claim 2, characterized in that: the locking device further comprises an anti-closing locking mechanism, the anti-closing locking mechanism is provided with an anti-closing boss (33), the anti-closing boss (33) can extend out of an anti-closing slotted hole (23) of the shell (2) or retract into the shell (2), and when the anti-closing boss (33) of the anti-closing locking mechanism extends out of the anti-closing slotted hole (23), the anti-closing locking mechanism limits the indicator (12), so that the button (1) cannot drive the circuit breaker to be switched from an opening state to a closing state; when the anti-closing boss (33) retracts into the shell (2), the anti-closing locking mechanism releases the limit of the indicator (12), so that the button (1) can drive the circuit breaker to be switched from the opening state to the closing state.

5. Plug-in circuit breaker according to claim 4, characterized in that: the indicating piece (12) comprises a rotating shaft (122) and an indicating part (125) for indicating the opening and closing conditions of the circuit breaker, the indicating piece (12) is installed on the button piece (11) through the rotating shaft (122), the indicating part (125) extends into the cavity, and when the button piece (11) is pulled or pressed to drive the opening and closing of the circuit breaker, the indicating piece (12) rotates around the rotating shaft (122), so that different areas of the indicating part (125) correspond to the observation window (111); one end of a rotating shaft (122) of the indicating piece (12) is exposed out of the button piece (11), one end of the rotating shaft (122) exposed out of the button piece (11) is provided with a locking block (126), and the locking block (126) is provided with a limiting part (124) matched with the closing-prevention locking mechanism and a driving part (123) matched with the pulling-prevention locking mechanism.

6. Plug-in circuit breaker according to claim 4 or 5, characterized in that: the anti-closing locking mechanism comprises an anti-closing locking piece (3) and an anti-closing elastic piece (4), the anti-closing locking piece (3) is rotatably installed in the shell (2), one end of the anti-closing locking piece (3) is provided with an anti-closing boss (33), the other end of the anti-closing locking piece is provided with an anti-closing limiting part (32) in limiting fit with the indicating piece (12), the anti-closing elastic piece (4) is connected with the anti-closing locking piece (3) to drive the anti-closing locking piece (3) to rotate towards one side, so that the anti-closing limiting part (32) is in limiting fit with the indicating piece (12), the button (1) cannot drive the circuit breaker, and the anti-closing boss (33) extends out of the anti-; the pressing of the anti-closing boss (33) can drive the anti-closing locking piece (3) to rotate to the other side against the elastic force of the anti-closing elastic piece (4) so that the anti-closing boss (33) retracts into the shell and the limit of the anti-closing limiting part (32) and the indicating piece (12) is released.

7. Plug-in circuit breaker according to claim 1, characterized in that: prevent pulling out locking piece (6) rectilinear movement's direction perpendicular to circuit breaker's installation and insert the direction, prevent pulling out locking piece (6) and be equipped with in the one side that is close to and prevent pulling out slotted hole (22) and prevent pulling out boss (62), prevent pulling out boss (62) one side and be equipped with unblock piece (5) complex linkage step (63).

8. Plug-in circuit breaker according to claim 7, characterized in that: the anti-pulling locking piece (6) is provided with a convex sliding block, the corresponding position of the anti-pulling sliding groove of the shell (2) is provided with a sliding block groove, the anti-pulling elastic piece (7) is a torsion spring, and the bottom side of the anti-pulling locking piece (6) is provided with a convex side (64) of an elastic arm (71) of the limiting torsion spring.

9. Plug-in circuit breaker according to claim 5, characterized in that: a driving boss (121) is arranged on one side of the locking block (126), a closing-preventing limiting step is formed below the driving boss (121) on one side of the locking block (126) to serve as a limiting part (124), and a driving inclined surface is formed above the driving boss (121) to serve as a driving part (123).

10. Plug-in circuit breaker according to claim 9, characterized in that: along the direction of rotation when pivot (122) separating brake, the distance of the pivot axle center of drive inclined plane to pivot (122) lengthens gradually.

11. Plug-in circuit breaker according to claim 9, characterized in that: the other side of the locking block (126) adjacent to the driving boss (121) is provided with a first driven end (129) and a second driven end (128) which are spaced; the unlocking piece (5) is provided with a protruding indication driving part (53), the indication driving part (53) extends between a first driven end (129) and a second driven end (128), when the button piece (11) is pressed to drive the breaker to be switched on, the first driven end (129) is matched with the indication driving part (53) to enable the indication piece (12) to rotate, the area of the indication part (125) indicating the switch-on state corresponds to the observation window (111), when the button piece (11) is pulled to drive the breaker to be switched off, the second driven end (128) is matched with the indication driving part (53) to enable the indication piece (12) to rotate, and the area of the indication part (125) indicating the switch-off state corresponds to the observation window (111).

12. Plug-in circuit breaker according to claim 9, characterized in that: the other side of the locking block (126) adjacent to the driving boss (121) is provided with a first driven end (129) and a second driven end (128) which are spaced; the circuit breaker is characterized in that a raised shell indication driving part is arranged on the shell (2), the shell indication driving part extends between a first driven end (129) and a second driven end (128), when the button piece (11) is pressed to drive the circuit breaker to be switched on, the first driven end (129) is matched with the shell indication driving part to enable the indication piece (12) to rotate, the area of the indication part (125) indicating the switch-on state corresponds to the observation window (111), when the button piece (11) is pulled to drive the circuit breaker to be switched off, the second driven end (128) is matched with the shell indication driving part to enable the indication piece (12) to rotate, and the area of the indication part (125) indicating the switch-off state corresponds to the observation window (111).

13. A plug-in circuit breaker according to claim 11, characterized in that: unlocking piece (5) are located between button spare (11) and shell (2), and the middle part is rotated and is installed in shell (2), the one end that unlocking piece (5) correspond indicator (12) is equipped with bending end (52), the one end that unlocking piece (5) correspond and prevent pulling out locking piece (6) is equipped with and prevents pulling out locking piece (6) complex extension end (51), one side that unlocking piece (5) middle part corresponds its rotation axis is equipped with bellied instruction drive division (53).

14. Plug-in circuit breaker according to claim 6, characterized in that: prevent combined floodgate locking piece (3) middle part be equipped with prevent combined floodgate rotating part (31), one end is equipped with to the bellied boss (33) of preventing closing a floodgate in one side, the other end is equipped with prevents spacing portion (32) of closing a floodgate, prevent that combined floodgate elastic component (4) be the torsional spring, prevent that spacing portion (32) one side of closing a floodgate is equipped with location arch (34), the torsional spring is installed in shell (2), the elastic arm of one end presses on location arch (34), the other end card is in shell (2).

15. Plug-in circuit breaker according to claim 6, characterized in that: the unlocking piece (5) and the closing prevention locking piece (3) are coaxially arranged.

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