CN111477511B - Plug-in circuit breaker - Google Patents
Plug-in circuit breaker Download PDFInfo
- Publication number
- CN111477511B CN111477511B CN201911121725.5A CN201911121725A CN111477511B CN 111477511 B CN111477511 B CN 111477511B CN 201911121725 A CN201911121725 A CN 201911121725A CN 111477511 B CN111477511 B CN 111477511B
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- piece
- pulling
- closing
- circuit breaker
- shell
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- 230000007246 mechanism Effects 0.000 claims abstract description 75
- 230000002265 prevention Effects 0.000 claims description 26
- 238000005452 bending Methods 0.000 claims description 6
- 238000009434 installation Methods 0.000 claims description 5
- 238000003780 insertion Methods 0.000 claims description 4
- 230000037431 insertion Effects 0.000 claims description 4
- 230000002035 prolonged effect Effects 0.000 claims 1
- 239000002184 metal Substances 0.000 description 7
- 230000009471 action Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 235000014676 Phragmites communis Nutrition 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/04—Means for indicating condition of the switching device
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/50—Manual reset mechanisms which may be also used for manual release
- H01H71/58—Manual reset mechanisms which may be also used for manual release actuated by push-button, pull-knob, or slide
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- Switch Cases, Indication, And Locking (AREA)
- Breakers (AREA)
Abstract
The plug-in circuit breaker comprises a shell, wherein a button for driving the circuit breaker to switch on and off is arranged on the shell, an anti-pulling locking mechanism is arranged in the shell, 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 which can extend out of an anti-pulling slot hole of the shell, the anti-pulling locking piece is arranged in an anti-pulling sliding groove on the shell in a linear sliding mode, 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 slot hole; the unlocking piece is rotatably arranged 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, after the breaker is opened, the button is continuously pulled, the button is driven to rotate to be used 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 boss to retract into the shell, so that the breaker is prevented from being pulled out in a live state in a closing state, and the breaker can be prevented from falling out of the cabinet due to vibration in an opening state.
Description
Technical Field
The invention relates to a low-voltage electrical appliance, in particular to a plug-in circuit breaker.
Background
The use of the circuit breaker can effectively improve the safety of the electric appliance, the structure of the plug-in circuit breaker is developed into various types in order to meet the installation requirements of different electric appliances, and along with the miniaturization development trend of the electric appliances, the whole structure and the operation mode of the adaptive circuit breaker are required to be further upgraded.
The existing plug-in circuit breaker can be inserted into a cavity type working position of the cabinet to realize circuit connection, and if the plug-in circuit breaker is in a closing state after being inserted, the plug-in circuit breaker is directly pulled out, so that a great 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 in, the circuit is conducted after being plugged in the working position of the cabinet, and potential safety hazards exist.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a plug-in circuit breaker with simple structure and high reliability.
In order to achieve the above purpose, the invention adopts the following technical scheme:
The plug-in circuit breaker comprises a shell, wherein a button for driving the circuit breaker to switch on and off is arranged on the shell, a locking device is arranged in the shell, the locking device 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 which can extend out of an anti-pulling slot hole of the shell, the anti-pulling locking piece is arranged in an anti-pulling sliding groove on the shell in a linear sliding mode, 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 slot hole; the unlocking piece is rotatably arranged 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, after the breaker is opened, the button is continuously pulled, the button drives the unlocking piece to rotate and act on the anti-pulling locking piece, and the anti-pulling locking piece overcomes the elasticity of the anti-pulling elastic piece to enable the anti-pulling boss to retract into the shell.
Preferably, the button comprises a button piece and an indicator piece, a cavity for accommodating the indicator piece is formed in the button piece, an observation window for observing the indicator piece is formed in the button piece, a driving part matched with the anti-pulling locking mechanism is arranged on the indicator piece, after the breaker is opened, the button is pulled continuously, and the driving part of the indicator piece drives the unlocking piece to rotate so that the anti-pulling boss is retracted 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, after the breaker is opened, the button is pulled continuously, and the driving protrusion of the button piece drives the unlocking piece to rotate so that the anti-pulling boss is retracted 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 indicating piece, so that the button can not drive the circuit breaker to switch from a switching-off state to a switching-on state; when the anti-closing boss is retracted 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 switch from a switching-off state to a switching-on state.
Preferably, the indicating piece comprises a rotating shaft and an indicating part for indicating the opening and closing condition of the circuit breaker, the indicating piece is arranged on the button piece through the rotating shaft, the indicating part stretches into the cavity, and when the button piece is pulled or pressed to drive the circuit breaker to open and close, the indicating piece rotates around the rotating shaft, so that different areas of the indicating part correspond to the observation window; one end of the rotating shaft of the indicating piece is exposed out of the button piece, a locking block is arranged at one end of the rotating shaft exposed out of the button piece, and a limiting part matched with the anti-closing locking mechanism and a driving part matched with the anti-pulling locking mechanism are arranged on the locking block.
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 arranged 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 is connected with the anti-closing locking piece to drive the anti-closing locking piece to rotate to one side so that the anti-closing limiting part is in limiting fit with the indicating piece, the button cannot drive the circuit breaker to close, and the anti-closing boss stretches out of the anti-closing slot hole; pressing the closing prevention boss can drive the closing prevention locking piece to overcome the elastic force of the closing prevention elastic piece to rotate to the other side, so that the closing prevention boss is retracted into the shell, and the limit of the closing prevention limit part and the indicating piece is released.
Preferably, the direction of the linear movement of the anti-pulling locking piece is perpendicular to the installation and insertion direction of the circuit breaker, an anti-pulling boss is arranged on one side of the anti-pulling locking piece, which is close to the anti-pulling slot hole, and a linkage step matched with the unlocking piece is arranged on one side of the anti-pulling boss.
Preferably, the anti-pulling locking piece is provided with a protruding sliding block, a sliding block groove is arranged at a corresponding position of the anti-pulling sliding groove of the shell, the anti-pulling elastic piece is a torsion spring, and the bottom side of the anti-pulling locking piece is provided with a protruding 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-preventing limit step is formed below the driving boss on one side of the locking block to serve as a limit part, and a driving inclined plane is formed above the driving boss to serve as a driving part.
Preferably, the distance from the driving inclined plane to the axis of the rotating shaft gradually becomes longer along the rotating direction when the rotating shaft is separated from the brake.
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 convex indication driving part, the indication driving part extends between a first driven end and a second driven end, when the button piece is pressed to drive the circuit breaker to be closed, the first driven end is matched with the indication driving part to enable the indication piece to rotate, the indication part indicates that the area of the closing state corresponds to the observation window, and when the button piece is pulled to drive the circuit breaker to be opened, the second driven end is matched with the indication driving part to enable the indication piece to rotate, so that the indication part indicates that the area of the opening 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; the shell is provided with a convex shell indication driving part, the shell indication driving part extends between a first driven end and a second driven end, when the button piece is pressed to drive the circuit breaker to be closed, the first driven end is matched with the shell indication driving part to enable the indication piece to rotate, the indication part indicates that the area of the closing state corresponds to the observation window, and when the button piece is pulled to drive the circuit breaker to be opened, the second driven end is matched with the shell indication driving part to enable the indication piece to rotate, so that the indication part indicates that the area of the opening state corresponds to the observation window.
Preferably, the unlocking piece is located between the button piece and the shell, the middle part is rotatably installed in the shell, one end of the unlocking piece corresponding to the indicating piece is provided with a bending end, one end of the unlocking piece corresponding to the anti-pulling locking piece is provided with an extension end matched with the anti-pulling locking piece, and one side of the middle part of the unlocking piece corresponding to the rotation axis of the unlocking piece is provided with a convex indicating driving part.
Preferably, the middle part of the anti-closing locking piece is provided with an anti-closing rotating part, one end of the anti-closing locking piece is provided with an anti-closing boss protruding towards one side, the other end of the anti-closing locking piece is provided with an anti-closing limiting part, the anti-closing elastic piece is a torsion spring, one side of the anti-closing limiting part is provided with a positioning protrusion, the torsion spring is installed in the shell, an elastic arm at one end is pressed against the positioning protrusion, and the other end of the elastic arm is clamped in the wall of the shell.
Preferably, the unlocking piece and the anti-closing locking piece are coaxially arranged.
The plug-in circuit breaker is provided with the anti-pulling locking mechanism which is linearly and slidably arranged in the shell through the anti-pulling elastic piece, and the anti-pulling elastic piece drives the anti-pulling boss to extend out of the anti-pulling groove hole in both a closing state and a separating state of the circuit breaker, so that the plug-in circuit breaker cannot be pulled out of a working position of a cabinet in the closing state, the live-line pulling of the circuit breaker is prevented, the circuit breaker can be prevented from falling out of the cabinet due to vibration in the transportation process and the like in the separating state, and when the circuit breaker needs to be pulled out in the separating state, the anti-pulling locking piece is driven through the pulling button through the unlocking piece, so that the anti-pulling boss is retracted into the shell, the circuit breaker can be pulled out normally, and the safety of the circuit breaker is improved.
In addition, the plug-in circuit breaker is further provided with an anti-closing locking mechanism, the anti-closing locking mechanism limits 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 closed only after being installed on the cabinet, the plug-in circuit breaker is prevented from being inserted into the cabinet in the switching-on state, and the safety of the circuit breaker is improved.
In addition, through the cooperation of the indicator with anti-pulling locking mechanical system and anti-closing locking mechanical system, when realizing the instruction of circuit breaker divide-shut brake state, realize the anti-live plug of circuit breaker in order to simplify the structure. Particularly, the locking block of the indicating piece is arranged on one side of the rotating shaft, when the button is pressed and pulled, the indicating piece rotates simultaneously along with the downward movement and upward movement of the button, so that when a driving inclined plane of the indicating piece serving as a driving part is matched with the unlocking piece, pushing force and rotation exist simultaneously, the whole process is smoother, meanwhile, the moment for driving the unlocking piece is increased by the rotation of the indicating piece through the driving inclined plane, the unlocking piece can rotate by a larger angle in a smaller space, the space occupying the circuit breaker is reduced, and the miniaturization design of the circuit breaker is facilitated.
Drawings
Fig. 1 is an overall construction view of a circuit breaker of the present invention;
Fig. 2 is a schematic view of a circuit breaker according to the present invention in a locked state of an anti-closing locking mechanism;
fig. 3 is a schematic view of the structure of the unlocking state of the anti-closing locking mechanism of the circuit breaker of the present invention;
fig. 4 is a structural view of the cooperation of the button, the indicating member and the closing preventing locking member of the circuit breaker of the present invention;
Fig. 5 is a schematic view showing a structure of the anti-pulling locking mechanism of the circuit breaker according to the present invention in a locked state;
Fig. 6 is a schematic view of the structure of the unlocking state of the anti-pulling locking mechanism of the circuit breaker of the present invention;
Fig. 7 is a structural view of the anti-pulling locking member of the circuit breaker of the present invention mated with the housing.
Detailed Description
Embodiments of the circuit breaker of the present invention are further described below with reference to the examples given in connection with 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 plug-in circuit breaker of the invention comprises a shell 2, a button mechanism, an operating mechanism 9 in driving connection with the button mechanism, a moving contact connected with the operating mechanism 9, a fixed contact arranged opposite to the moving contact, and a short-circuit protection mechanism, an arc extinguishing device, an overload protection mechanism, an outgoing line connection device, an incoming line connection device and other parts of the circuit breaker, which are not shown in the drawings), wherein the button mechanism drives the operating mechanism 9 to drive the moving contact to contact and close with the fixed contact, or drives the operating mechanism 9 to drive the moving contact to separate and break with the fixed contact.
The plug-in circuit breaker is also provided with a locking device, a shell 2 is provided with an anti-pulling slot hole 22 matched with the locking device, a sheet metal part of a working position of a cabinet inserted into the plug-in circuit breaker is provided with a cabinet limit Kong Canjian figure 1, when the plug-in circuit breaker is installed to the working position, the anti-pulling slot hole 22 of the plug-in circuit breaker corresponds to the cabinet limit hole, when the plug-in circuit breaker is not installed to the working position, the anti-pulling slot hole 22 of the plug-in circuit breaker is misplaced with the cabinet limit hole, and the cabinet sheet metal part can shield the cabinet limit hole, which is the prior art in the field and is not repeated herein.
The button mechanism comprises a button 1, a connecting rod and a driving piece 8, wherein 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; the push button 1 is pressed, the push button 1 drives the driving piece 8 to rotate to one side through the connecting rod, the driving piece 8 drives the operating mechanism 9 through the U-shaped rod 8 to drive the moving contact to contact with the fixed contact to realize switching-on, the push button 1 is pulled, the push button 1 drives the driving piece 8 to rotate to the other side through the connecting rod, and the driving piece 8 drives the operating mechanism 9 through the U-shaped rod 8 to drive the moving contact to separate from the fixed contact to realize switching-off. The function of the driving piece 8 is similar to that of a handle of a traditional miniature circuit breaker, the operating mechanism generally comprises a contact support, a lock catch and a trip button, which are connected with a moving contact, the short-circuit protection mechanism and the overload protection mechanism are correspondingly arranged with the lock catch of the operating mechanism, and when 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 trip so as to enable the circuit breaker to be separated for protection.
The invention has an improvement 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 which can extend out of an anti-pulling slot hole 22 of the shell 2, the anti-pulling locking piece 6 is arranged in an anti-pulling chute on the shell 2 in a linear sliding way, 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; the unlocking piece 5 is rotatably arranged in the shell 2, one end of the unlocking piece is matched with the button 1, the other end of the unlocking piece is matched with the anti-pulling locking piece 6, after the breaker is opened, the button 1 is continuously pulled, the unlocking piece 5 is driven by the button 1 to rotate and act on the anti-pulling locking piece 6, and the anti-pulling locking piece 6 overcomes the elasticity of the anti-pulling elastic piece 7 to enable the anti-pulling boss 62 to retract into the shell 2. The plug-in circuit breaker is provided with the anti-pulling locking mechanism which is linearly and slidably arranged in the shell through the anti-pulling elastic piece, and the anti-pulling elastic piece drives the anti-pulling boss to extend out of the anti-pulling groove hole in both a closing state and a separating state of the circuit breaker, so that the plug-in circuit breaker cannot be pulled out of a working position of a cabinet in the closing state, the live-line pulling of the circuit breaker is prevented, the circuit breaker can be prevented from falling out of the cabinet due to vibration in the transportation process and the like in the separating state, and when the circuit breaker needs to be pulled out in the separating state, the anti-pulling locking piece is driven through the pulling button through the unlocking piece, so that the anti-pulling boss is retracted into the shell, the circuit breaker can be pulled out normally, and the safety of the circuit breaker is improved.
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 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 23, the anti-closing locking mechanism limits the button 1, so that the button 1 can not drive the circuit breaker to switch from a switching-off state to a switching-on state; when the anti-closing boss 33 is retracted into the housing 2, the anti-closing locking mechanism releases the limit on 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 an anti-closing locking mechanism, the anti-closing locking mechanism limits the button, so that the button can not drive the circuit breaker to switch from a breaking state to a closing state, the plug-in circuit breaker can be closed only after being installed on the cabinet, the cabinet is prevented from being inserted under the closing state, and the safety of the circuit breaker is improved.
As an embodiment that the push button 1 drives the anti-pulling locking piece 6 to unlock, the push button 1 comprises a push button piece 11, a driving protrusion matched with the anti-pulling locking mechanism is arranged on the push button piece 11, after the circuit breaker is opened, the push button 1 is continuously pulled, the driving protrusion of the push button piece 11 drives the unlocking piece 5 to rotate so that the anti-pulling boss 62 is retracted into the shell 2, and the body of the push button 1 drives the anti-pulling locking piece 6 to unlock through the unlocking piece 5.
As a preferred embodiment, the button 1 includes a button member 11 and an indicator member 12, a cavity for accommodating the indicator member 12 is provided in the button member 11, an observation window 111 for observing the indicator member 12 is provided on the button member 11, a driving portion 123 matched with an anti-pulling locking mechanism and a limiting portion 124 matched with the anti-closing locking mechanism are provided on the indicator member 12, after the circuit breaker is opened, the button 1 is continuously pulled, and the driving portion 123 of the indicator member 12 drives the unlocking member 5 to rotate so that the anti-pulling boss 62 is retracted into the housing 2. Through the cooperation of the indicator and anti-pulling locking mechanism and anti-closing locking mechanism, the anti-live plug of the circuit breaker is realized to simplify the structure when the indication of the opening and closing state of the circuit breaker is realized.
As shown in fig. 2-4, a plug-in circuit breaker comprises a housing 2, a button 1 for driving the circuit breaker to switch on and off is arranged on the housing 2, the button 1 comprises a button piece 11 and an indicator piece 12, the button piece 11 is positioned in a button mounting groove of the housing 2, a cavity for accommodating the indicator piece 12 is arranged inside the button piece 11, an observation window 111 for observing the indicator piece 12 is arranged on the upper portion of the button piece 11, the indicator piece 12 comprises a rotating shaft 122 and an indicator portion 125 for indicating the switch-on and switch-off condition of the circuit breaker, the indicator piece 12 is arranged on the button piece 11 through the rotating shaft 122, the indicator portion 125 stretches into the cavity, and when the button piece 11 is pulled or pressed to drive the circuit breaker to switch on and off, the indicator piece 12 rotates around the rotating shaft 122, so that different areas of the indicator portion 125 correspond to the observation window 111.
As shown in fig. 2-4, in the preferred embodiment of the indicator 12, the indicator 12 includes a connecting rod 127, one end of the connecting rod 127 is provided with an indicator portion 125, the other end is provided with a rotating shaft 122, the rotating shaft 122 is mounted in the mounting slot 112 on the button 11, the indicator portion 125 extends into the cavity of the button 11, one end of the rotating shaft 122 exposes out of the button 11, and one end of the rotating shaft 122 exposing out of the button 11 is provided with a locking block 126 matched 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 an anti-closing limiting step, and the driving portion 123 is a driving inclined plane. As shown in fig. 4, a driving boss 121 is disposed on one side of the locking block 126, a closing-preventing limit step is formed below the driving boss 121 on one side of the locking block 126 as a limit portion 124, and a driving inclined surface is formed above the driving boss 121 as a driving portion 123, and further preferably, the distance from the driving inclined surface to the shaft center of the rotating shaft gradually increases along the direction of rotation when the rotating shaft 122 is separated from the gate. The locking piece of indicator sets up in one side of pivot, when pressing and drawing the button, the indicator rotates simultaneously along with the in-process that the button moved down and moved up for when the drive inclined plane of indicator as drive division and unlock piece cooperation, there is thrust and rotation simultaneously, make whole process more smooth-going, the moment of drive unlock piece has also been increased through the drive inclined plane to the rotation of indicator simultaneously, just can make unlock piece rotate great angle in less space, reduced the space that occupies the circuit breaker, do benefit to the miniaturized design of circuit breaker.
The scheme of driving the indicator to rotate during opening and closing is that the driving part is indicated by a shell arranged on the shell 2. As shown in fig. 4, the locking block 126 is provided with a first driven end 129 and a second driven end 128 which are spaced apart from each other at the other side adjacent to the driving boss 121; the shell 2 is provided with a convex 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 piece 11 is pressed to drive the breaker to be closed, the first driven end 129 is matched with the shell indication driving part to enable the indicator 12 to rotate, the area of the indicator 125 for indicating the closing state corresponds to the observation window 111, and when the button piece 11 is pulled to drive the breaker to be opened, 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 indicator 125 for indicating the opening state corresponds to the observation window 111. After the breaker is opened, the push button 1 is continuously pulled, and the driving part 123 of the indicating piece 12 drives the unlocking piece 5 to rotate so that the anti-pulling boss 62 is retracted into the shell 2.
As a preferred embodiment, the indication driving part 53 provided on the unlocking member 5 drives the indication member to rotate at the time of opening and closing. As shown in fig. 4-6, the locking block 126 is provided with spaced first and second driven ends 129, 128 on the other side adjacent the drive boss 121; the unlocking piece 5 is provided with a convex indication driving part 53, the indication driving part 53 extends between the first driven end 129 and the second driven end 128, when the button piece 11 is pressed to drive the breaker to be closed, 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 for indicating the closing state corresponds to the observation window 111, and when the button piece 11 is pulled to drive the breaker to be opened, 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 for indicating the opening state corresponds to the observation window 111.
Preferably, the indication portion 125 is an arc-shaped plate with an area larger than the observation window 111, the surface of the indication portion 125 near the observation window 111 is divided into a closing area and a separating area, which can be observed through the observation window 111, and the separating area and the closing area can be distinguished by color, or corresponding marks, such as letters or graphic marks, can be made. The axial direction of the rotating shaft 122 is perpendicular to the connecting rod 44 and perpendicular to the indicating portion 125.
Referring to fig. 4-7, in a preferred embodiment of the anti-pulling locking mechanism of the present invention, the anti-pulling locking mechanism includes an unlocking member 5, an anti-pulling locking member 6 and an anti-pulling elastic member 7, 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 locking member 6 is slidably mounted in an anti-pulling chute on the housing 2 in a straight line, and 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. The unlocking piece 5 is rotatably arranged in the shell 2, one end of the unlocking piece is matched with the indicating piece 12, the other end of the unlocking piece is matched with the anti-pulling locking piece 6, after the breaker is opened, the push button 1 is continuously pulled, the unlocking piece 5 is driven to rotate to be used on the anti-pulling locking piece 6, and the anti-pulling locking piece 6 overcomes the elasticity of the anti-pulling elastic piece 7 to enable the anti-pulling boss 62 to retract into the shell 2.
Specifically, the anti-pulling locking piece 6 is installed in an anti-pulling sliding groove on the shell 2 in a linear sliding manner, an anti-pulling boss 62 is arranged on one side of the anti-pulling locking piece 6, which is close to the anti-pulling groove hole 22, and a linkage step 63 matched with the unlocking piece 5 is arranged on one side of the anti-pulling boss 62. 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 faces the direction of pulling out the cabinet of the circuit breaker and is perpendicular to the installation insertion direction of the circuit breaker, and the inclined surface faces the direction of inserting the circuit breaker into the cabinet.
The unlocking piece 5 is located between the button piece 11 and the shell 2, the middle part is rotatably installed in the shell 2, a bending end 52 is arranged at one end of the unlocking piece 5 corresponding to the indicating piece 12 and matched with a driving inclined plane serving as a driving part 123, an extension end 51 matched with the anti-pulling locking piece 6 is arranged at one end of the unlocking piece 5 corresponding to the anti-pulling locking piece 6, and the extension end 51 is attached to a linkage step 63 of the anti-pulling locking piece 6. Preferably, a protruding indication driving part 53 is provided at one side of the middle part of the unlocking member 5 corresponding to the rotation axis thereof, and is used for driving the indication member 12 to rotate when the circuit breaker is opened or closed, so as to indicate the opening or closing state of the circuit breaker. The anti-pulling elastic piece 7 is a torsion spring, an elastic arm 71 at one end of the torsion spring is pressed on the anti-pulling locking piece 6, the other end of the torsion spring is clamped in the shell 2, under the action of the torsion spring, an anti-pulling boss 62 is exposed outside the circuit breaker, and an extension end 51 is clamped between the linkage step 63 and the inner wall of the shell of the circuit breaker.
Preferably, the casing 2 is provided with an anti-pulling slot 22 corresponding to the anti-pulling boss 62, the anti-pulling locking piece 6 is provided with a protruding sliding block, a sliding block groove is arranged at a corresponding position of the anti-pulling sliding groove of the casing 2, and the sliding block groove cooperate to play a role in guiding and limiting, so that the sliding of the anti-pulling locking piece 6 is more reliable. As shown in fig. 7, the two sides of the anti-pulling locking member 6 are respectively provided with a sliding block 61a and a sliding block 61b, the bottom side of the anti-pulling locking member 6 is provided with a convex side 64 of an elastic arm 71 of a limiting torsion spring, the two sides of the anti-pulling sliding groove are correspondingly provided with a sliding block groove 21a and a sliding block 21b, and naturally, the anti-pulling locking member 6 can be provided with a sliding groove, and a convex sliding guide rail is arranged in the anti-pulling sliding groove of the shell 2. Obviously, the anti-pulling elastic member 7 may also be an elastic member of a compression spring, a leaf spring or other structures.
When the button 1 is pressed to drive the circuit breaker to switch to a switching-on state, the indicating piece 12 moves along with the button 1 and rotates to indicate switching-on, a driving inclined plane serving as a driving part 123 of the indicating piece 12 avoids a bending end 52 of the unlocking piece 5, the indicating piece 12 and the driving inclined plane have no force action relationship, and the anti-pulling locking piece 6 stretches out of the anti-pulling slotted hole 22 under the action of the anti-pulling elastic piece 7, so that the circuit breaker cannot be pulled out of the cabinet in the switching-on state; as shown in fig. 5, when the pull button 1 drives the circuit breaker to switch to a switch-off state, the indicator 12 moves along with the button 1 and rotates to indicate switch-off, at this time, the driving inclined plane of the indicator 12 as the driving part 123 just contacts with the bent end 52 of the unlocking piece 5 or has a small gap, the two have no force relationship, and the anti-pulling locking piece 6 extends out of the anti-pulling slot 22 under the action of the anti-pulling elastic piece 7; as shown in fig. 6, after the circuit breaker is opened, the push button member 11 is continuously pulled, the driving inclined surface of the driving part 123 of the indicating member 12 drives the unlocking member 5 to rotate clockwise through the bending end 52, so that the extending 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 is retracted into the housing 2 against the elastic force of the anti-pulling elastic member 7, and the locking is released, so that the circuit breaker can be pulled out from the cabinet normally.
According to the anti-pulling locking mechanism of the embodiment, the anti-pulling locking piece 6 can be directly connected with the unlocking piece 5, and the anti-pulling boss 62 of the anti-pulling locking piece 6 is driven to extend and retract from the opening of the shell 2 outside the circuit breaker through rotation of the unlocking piece 5. 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 manual plugging of the circuit breaker can be conducted 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. According to the invention, the scheme of the anti-pulling elastic piece 7 and the anti-pulling locking piece 6 is adopted, the anti-pulling elastic piece 7 drives the anti-pulling locking piece 6 to be locked in a limiting manner, and when the anti-pulling locking piece 6 is locked with the sheet metal part of the cabinet in a limiting manner, the indicating piece 12 avoids the unlocking piece 5, so that the force conduction is avoided, and the reliability of the circuit breaker is improved. In addition, the anti-pulling locking piece 6 adopts a structure in sliding fit with the anti-pulling sliding groove, but not a rotating structure, so that the acting force of the manual plug-in circuit breaker is prevented from being transmitted to the shell 2, and the shell 2 and the sheet metal part of the cabinet are offset to influence the reliability of the wiring of the first wire inlet terminal.
As shown in fig. 2-4, in the preferred embodiment of the anti-closing locking member 3, the anti-closing locking member 3 cooperates with the indicating member 12, so that when the plug-in circuit breaker is not inserted into the working position of the cabinet, the plug-in circuit breaker cannot be closed, and the circuit breaker is prevented from being switched from the opening state to the closing state.
The anti-closing locking mechanism comprises an anti-closing locking piece 3 and an anti-closing elastic piece 4, wherein the anti-closing locking piece 3 is rotatably arranged in the shell 2 and is positioned 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 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 to 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 to close, and the anti-closing boss 33 extends out of the anti-closing slot 23; pressing the closing prevention boss 33 can drive the closing prevention locking piece 3 to rotate to the other side against the elastic force of the closing prevention elastic piece 4, so that the closing prevention boss 33 is retracted into the shell, and the limit of the closing prevention limit part 32 and the indicating piece 12 is released. Preferably, as shown in fig. 4, the closing-preventing limiting portion 32 is a closing-preventing limiting boss, and is engaged with a closing-preventing limiting step serving as a limiting portion 124 on the indicator 12.
As shown in fig. 2, the anti-closing elastic member 4 is connected with 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 limiting fit with the indicating member 12, the button 11 cannot press to close, and the anti-closing boss 33 extends out of the anti-closing slot 23 and keeps inactive. As shown in fig. 3, pressing the closing prevention boss 33 drives the closing prevention locking member 3 to rotate to the other side against the elastic force of the closing prevention elastic member 4, so that the closing prevention boss 33 is retracted into the housing, and the limit of the closing prevention limit part 32 and the indicating member 12 is released, so that the button member 11 can press and drive the circuit breaker to close.
Specifically, as shown in fig. 2-4, the middle part of the anti-closing locking piece 3 is provided with an anti-closing rotating part 31, one end of the anti-closing locking piece is provided with an anti-closing boss 33 protruding to one side, the other end of the anti-closing locking piece is provided with an anti-closing limiting part 32, and the anti-closing rotating part 31 is provided with an anti-closing rotating hole and is arranged on a rotating shaft in the shell 2. The anti-closing elastic piece 4 is a torsion spring, one side of the anti-closing limiting part 32 is provided with a positioning protrusion 34, 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 wall 2. Obviously, the closing-preventing elastic member 4 may be an elastic member of other structures such as a compression spring or a reed. The section of the closing prevention boss 33 is a right trapezoid or a right triangle, the closing prevention boss 33 comprises a straight surface and an inclined surface, the straight surface faces the direction of pulling out the cabinet of the circuit breaker and is perpendicular to the installation insertion direction of the circuit breaker, and the inclined surface faces the direction of inserting the circuit breaker into the cabinet.
As another scheme, the anti-closing locking piece 3 can also be matched with the limiting step on the button piece 11 without being matched with the indicating piece to limit closing.
Preferably, as shown in fig. 1, the unlocking member 5 is disposed below the anti-closing locking member 3, and the unlocking member and the anti-closing locking member are coaxially disposed, share a rotating shaft, save space, and facilitate miniaturization design of the circuit breaker.
The operation of the locking device of the circuit breaker according to the present invention will be described with reference to the embodiments of fig. 1 to 7. As shown in fig. 2, when the circuit breaker is not mounted in the cabinet working position, the anti-closing elastic member 4 drives the anti-closing locking member 3 to rotate anticlockwise, so that the anti-closing limiting portion 32 is in limiting fit with the anti-closing limiting boss of the indicating member 12, and the anti-closing boss 33 extends out of the anti-closing slot 23 and keeps inactive, at this time, the button member 11 cannot be pressed down, so that the button member 11 cannot drive the circuit breaker to switch from the opening state to the closing state. At the same time, the anti-pulling elastic piece 7 also drives the anti-pulling boss 62 of the anti-pulling locking piece 6 to extend out of the anti-pulling slotted hole 22.
When the circuit breaker is installed in the cabinet, the sheet metal part of the cabinet presses down the closing prevention boss 33 and the pulling prevention boss 62, so that the closing prevention boss 33 and the pulling prevention boss 62 can retract into the shell against the elastic force of the elastic piece, 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 working position of the cabinet, the sheet metal part of the cabinet presses down the anti-closing boss 33, so that the anti-closing locking piece 3 rotates clockwise against the counter force of the anti-closing elastic piece 4, the anti-closing boss 33 rotates back into the circuit breaker, the anti-closing limiting part 32 is blocked and released from the anti-closing limiting boss of the indicator 12, at the moment, the button 1 is pressed down, the circuit breaker is switched from the opening state to the closing state, the button piece 11 and the indicator 12 can move downwards integrally, the circuit breaker is closed when the driving operation mechanism acts, the indicator 12 rotates under the action of the indication driving part 53 on the unlocking piece 5, and the closing area on the indicator 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 slot 22 and is in limit 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 piece 11 is pulled in a direction away from the circuit breaker, the button piece 11 enables the circuit breaker to be opened through the operating mechanism, the circuit breaker is switched to an opening state from the closing state, the button piece 11 drives the indicator piece 12 to move together, the indicator piece rotates under the action of the indication driving part 53 on the unlocking piece 5 to rotate, an opening area on the indication part 125 corresponds to the observation window 111, and at the moment, a driving inclined plane of the indicator piece 12 just contacts with the bending end 52 of the unlocking piece 5 or has a certain gap.
As shown in fig. 6, when the circuit breaker is in the opening state, the button member 11 is continuously pulled in a direction away from the circuit breaker, the button member 11 drives the indicating member 12 to move together, the driving inclined surface of the indicating member 12 acts on the lower end surface of the bent end 52 of the unlocking member 5, the unlocking member 5 is forced to rotate clockwise around the shaft, the extending end 51 acts on the linkage step 63 of the anti-pulling locking member 6, and the locking member 6 is forced to retract into the circuit breaker along the direction of the sliding groove against the counterforce of the anti-pulling elastic member 7, so that the circuit breaker can be pulled out from the cabinet.
The foregoing is a further detailed description of the invention in connection with the preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the invention, and these should be considered to be within the scope of the invention.
Claims (13)
1. The utility model provides a plug-in circuit breaker, includes shell (2), be provided with button (1) that are used for driving the circuit breaker divide-shut brake on shell (2), be equipped with locking device in shell (2), its characterized in 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) which can extend out of an anti-pulling slot hole (22) of the shell (2), the anti-pulling locking piece (6) is arranged in an anti-pulling sliding groove on the shell (2) in a linear sliding mode, 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);
The unlocking piece (5) is rotatably arranged in the shell (2), one end of the unlocking piece is matched with the button (1), the other end of the unlocking piece is matched with the anti-pulling locking piece (6), after the breaker is disconnected, the button (1) is continuously pulled, the unlocking piece (5) is driven to rotate by the button (1) to be used on the anti-pulling locking piece (6), and the anti-pulling locking piece (6) overcomes the elasticity of the anti-pulling elastic piece (7) to enable the anti-pulling boss (62) to retract into the shell (2);
Button (1) are including button spare (11) and indicator (12), button spare (11) are inside to be equipped with and are used for holding the cavity of indicator (12), are equipped with on button spare (11) and are used for observing observation window (111) of indicator (12), 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), the drive division (123) of indicator (12) drive unlocking piece (5) rotate make prevent pulling out boss (62) retract in shell (2).
2. The plug-in circuit breaker according to claim 1, 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 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 indicating piece (12) so that the button (1) cannot drive the circuit breaker to switch from a switching-off state to a switching-on state; when the anti-closing boss (33) is retracted into the shell (2), the anti-closing locking mechanism releases the limit of the indicating piece (12), so that the button (1) can drive the circuit breaker to switch from a switching-off state to a switching-on state.
3. The plug-in circuit breaker according to claim 2, characterized in that: the indicating piece (12) comprises a rotating shaft (122) and an indicating part (125) for indicating the opening and closing condition of the circuit breaker, the indicating piece (12) is arranged on the button piece (11) through the rotating shaft (122), the indicating part (125) stretches into the cavity, and when the button piece (11) is pulled or pressed to drive the circuit breaker to open and close, 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 anti-closing locking mechanism and a driving part (123) matched with the anti-pulling locking mechanism.
4. A plug-in circuit breaker according to claim 2 or 3, characterized in that: the anti-closing locking mechanism comprises an anti-closing locking piece (3) and an anti-closing elastic piece (4), wherein the anti-closing locking piece (3) is rotatably arranged 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 to one side, so that the anti-closing limiting part (32) is in limiting fit with the indicating piece (12) to enable the button (1) to be incapable of driving the circuit breaker to close, and the anti-closing boss (33) stretches out of the anti-closing slot hole (23); pressing the closing prevention boss (33) can drive the closing prevention locking piece (3) to overcome the elastic force of the closing prevention elastic piece (4) to rotate to the other side, so that the closing prevention boss (33) is retracted into the shell, and the limiting of the closing prevention limiting part (32) and the indicating piece (12) is released.
5. The plug-in circuit breaker according to claim 1, characterized in that: the direction of the straight line movement of the anti-pulling locking piece (6) is perpendicular to the installation insertion direction of the circuit breaker, an anti-pulling boss (62) is arranged on one side of the anti-pulling locking piece (6) close to the anti-pulling slot hole (22), and a linkage step (63) matched with the unlocking piece (5) is arranged on one side of the anti-pulling boss (62).
6. The plug-in circuit breaker according to claim 5, characterized in that: the anti-pulling locking piece (6) is provided with a protruding sliding block, a sliding block groove is arranged at a corresponding position of the anti-pulling sliding groove of the shell (2), 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 protruding side edge (64) of an elastic arm (71) of a limiting torsion spring.
7. A plug-in circuit breaker according to claim 3, 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 plane is formed above the driving boss (121) to serve as a driving part (123).
8. The plug-in circuit breaker according to claim 7, characterized in that: along the rotating direction when the rotating shaft (122) is separated from the brake, the distance from the driving inclined plane to the axis of the rotating shaft (122) is gradually prolonged.
9. The plug-in circuit breaker according to claim 7, characterized in that: the locking block (126) is provided with a first driven end (129) and a second driven end (128) which are spaced at the other side adjacent to the driving boss (121); the unlocking piece (5) is provided with a convex indication driving part (53), the indication driving part (53) stretches 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 indication driving part (53) to enable the indication piece (12) to rotate, the indication part (125) indicates the area of the switching-on state to correspond to the observation window (111), and when the button piece (11) is pulled to drive the circuit breaker to switch off, the second driven end (128) is matched with the indication driving part (53) to enable the indication piece (12) to rotate, and the indication part (125) indicates the area of the switching-off state to correspond to the observation window (111).
10. The plug-in circuit breaker according to claim 7, characterized in that: the locking block (126) is provided with a first driven end (129) and a second driven end (128) which are spaced at the other side adjacent to the driving boss (121); the circuit breaker is characterized in that a convex 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 closed, the first driven end (129) is matched with the shell indication driving part to enable the indication piece (12) to rotate, the indication part (125) indicates the area of the closing state to correspond to the observation window (111), and when the button piece (11) is pulled to drive the circuit breaker to be opened, the second driven end (128) is matched with the shell indication driving part to enable the indication piece (12) to rotate, and the indication part (125) indicates the area of the opening state to correspond to the observation window (111).
11. The plug-in circuit breaker according to claim 9, characterized in that: the unlocking piece (5) is located between the button piece (11) and the shell (2), the middle part is rotatably installed in the shell (2), one end of the unlocking piece (5) corresponding to the indication piece (12) is provided with a bending end (52), one end of the unlocking piece (5) corresponding to the anti-pulling locking piece (6) is provided with an extension end (51) matched with the anti-pulling locking piece (6), and one side of the middle part of the unlocking piece (5) corresponding to the rotation axis of the unlocking piece is provided with a convex indication driving part (53).
12. The plug-in circuit breaker according to claim 4, characterized in that: the anti-closing locking piece (3) middle part be equipped with and prevent closing rotating part (31), one end is equipped with to one side bellied anti-closing boss (33), the other end is equipped with and prevents closing spacing portion (32), anti-closing elastic component (4) be the torsional spring, anti-closing spacing portion (32) one side be equipped with location arch (34), the torsional spring is installed in shell (2), the elastic arm of one end is pressed and is leaned on location arch (34), the other end card is in shell wall (2).
13. The plug-in circuit breaker according to claim 4, characterized in that: the unlocking piece (5) and the anti-closing locking piece (3) are coaxially arranged.
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| CN201911121725.5A CN111477511B (en) | 2019-11-15 | 2019-11-15 | Plug-in circuit breaker |
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| CN201911121725.5A CN111477511B (en) | 2019-11-15 | 2019-11-15 | Plug-in circuit breaker |
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| CN111477511B true CN111477511B (en) | 2024-10-01 |
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111883398B (en) * | 2020-08-04 | 2024-06-18 | 德力西电气有限公司 | Switching-on/off handle mechanism of plug-in circuit breaker and circuit breaker |
| CN111900045B (en) * | 2020-08-31 | 2025-04-22 | 环宇高科有限公司 | A locking and unlocking device for a circuit breaker |
| CN114446725B (en) * | 2020-11-03 | 2024-08-13 | 上海良信电器股份有限公司 | Plug-in circuit breakers and distribution cabinets |
| CN112768275B (en) * | 2021-01-11 | 2023-06-06 | 嘉兴京硅智能技术有限公司 | Intelligent electromechanical composite breaker |
| CN112768307B (en) * | 2021-01-11 | 2023-06-27 | 嘉兴京硅智能技术有限公司 | Fixed unlocking device of plug-in electromechanical hybrid circuit breaker |
| CN112768318B (en) * | 2021-01-11 | 2023-06-06 | 嘉兴京硅智能技术有限公司 | Intelligent electromechanical hybrid breaker opening locking device |
| CN115132536B (en) * | 2021-03-26 | 2024-09-20 | 上海良信电器股份有限公司 | Safety devices and plug-in circuit breakers |
| CN116246914A (en) * | 2021-12-08 | 2023-06-09 | 上海良信电器股份有限公司 | An operating mechanism and a circuit breaker |
| CN118841286B (en) * | 2023-04-25 | 2025-11-11 | 上海正泰智能科技有限公司 | Locking device of circuit breaker and circuit breaker |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN211828660U (en) * | 2019-11-15 | 2020-10-30 | 浙江正泰电器股份有限公司 | Plug-in circuit breaker |
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| CN102376500B (en) * | 2010-08-24 | 2014-05-14 | 上海良信电器股份有限公司 | Safety insertion self-locking device of plug-in moulded case circuit breaker |
| CN205177741U (en) * | 2015-11-30 | 2016-04-20 | 常熟开关制造有限公司(原常熟开关厂） | A electric operating mechanism for moulded case circuit breaker |
| CN107833799B (en) * | 2017-10-26 | 2024-09-20 | 上海良信电器股份有限公司 | A fixing and unlocking mechanism for plug-in circuit breaker |
| CN109686626B (en) * | 2018-12-28 | 2024-05-07 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
| CN109585233B (en) * | 2018-12-28 | 2024-05-14 | 浙江正泰电器股份有限公司 | Small-sized circuit breaker |
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| CN211828660U (en) * | 2019-11-15 | 2020-10-30 | 浙江正泰电器股份有限公司 | Plug-in circuit breaker |
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