CN110112671B - Plug-in type multifunctional interlocking mechanism of distribution box - Google Patents
Plug-in type multifunctional interlocking mechanism of distribution box Download PDFInfo
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- CN110112671B CN110112671B CN201910365723.4A CN201910365723A CN110112671B CN 110112671 B CN110112671 B CN 110112671B CN 201910365723 A CN201910365723 A CN 201910365723A CN 110112671 B CN110112671 B CN 110112671B
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- 238000009826 distribution Methods 0.000 title claims abstract description 50
- 230000007246 mechanism Effects 0.000 title claims abstract description 31
- 238000005192 partition Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 abstract description 6
- 230000008569 process Effects 0.000 abstract description 6
- 230000006378 damage Effects 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 4
- 208000014674 injury Diseases 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004146 energy storage Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B1/00—Frameworks, boards, panels, desks, casings; Details of substations or switching arrangements
- H02B1/26—Casings; Parts thereof or accessories therefor
- H02B1/46—Boxes; Parts thereof or accessories therefor
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
Abstract
According to the multifunctional interlocking mechanism of the plug-in type distribution box, when the box door is opened, the clamping plate is located at the vertical position, the swing arm is limited to rotate upwards and cannot push the switch of the plastic shell circuit breaker to be closed, when the box door is closed, the clamping plate is pushed to rotate away from the vertical limiting position through the top plate, the swing arm can rotate upwards and push the switch of the plastic shell circuit breaker to be closed, and meanwhile, the main shaft of the bus contact on-off operation mechanism is driven to rotate through the interlocking plate and the pulling rod, so that the bus plug-in state is locked; in the closing process, the clamping hook is inserted into the groove plate to be matched and limited along with the swing arm in an upward rotation way, and the box door cannot be opened; the double interlocking functions of opening and closing interlocking of the cabinet door switch and the molded case circuit breaker and interlocking of the cabinet door switch and the bus power supply can be simultaneously completed through one-time operation, and the novel plastic case circuit breaker is simple and compact in structure, convenient to operate, small in size, safe and reliable.
Description
Technical Field
The invention relates to a plug-in type multifunctional interlocking mechanism of a distribution box in a bus system of power transmission and distribution equipment in the power industry.
Background
The bus system in the power transmission and distribution products of the power industry is normally in tapping current through a distribution box and a plug-in unit, the on-off state of a bus is controlled through the on-off action of a molded case circuit breaker inside the distribution box and the plug-in unit, the bus system is high-current equipment, and the power safety is required to be ensured in the on-off operation process of the distribution box and the plug-in unit, so that the distribution box and the plug-in unit meet the following requirements when getting power through the bus: a. an operator can only perform closing operation on the molded case circuit breaker when the cabinet door is closed and locked; b. the power taking unit cannot perform plugging operation in a loaded state; in the prior art, two independent interlocking devices are generally arranged, the two independent interlocking devices are required to be locked or unlocked respectively through two operations, the two independent interlocking devices are required to be sequentially operated according to a certain operation sequence, the structure is complex, the occupied space is large, special tools are required to be equipped for interlocking and releasing, the steps are complex in the actual operation process, and the installation and connection operations are inconvenient.
Disclosure of Invention
The invention aims to solve the technical problem of providing the plug-in type multifunctional interlocking mechanism for the distribution box, which can simultaneously have the double interlocking functions of interlocking a box door switch with a molded case circuit breaker and interlocking the box door switch with a bus power supply, and has the advantages of simple and compact structure, convenient operation and small volume.
The invention relates to a plug-in type multifunctional interlocking mechanism of a distribution box, which is characterized in that: the power distribution box comprises a plug-in type power distribution box body, wherein a plastic shell circuit breaker is fixedly arranged in the box body through a vertical middle partition plate, a box door capable of being opened in a rotating mode is arranged on the front side of the box body, and a bus contact is arranged on the rear portion of the box body;
A swing arm capable of pushing a switch of the molded case circuit breaker to operate on/off is hinged on a side plate of the box body, a clamping plate is hinged on the side plate of the box body above the front end of the swing arm, and a top plate capable of pushing the clamping plate to rotate around a hinge point is fixedly arranged on the inner side surface of the box door at a position corresponding to the clamping plate; a clamping hook is fixedly arranged on the bottom surface of the swing arm at a position close to the end part, and a groove plate which can be matched and limited with the clamping hook is fixedly arranged on the inner side surface of the box door at a position corresponding to the clamping hook; the middle part of the swing arm is hinged on the side plate of the box body, the rear end of the swing arm is hinged with a interlocking plate arranged along the vertical direction, the middle part of the interlocking plate is provided with a waist round hole, a pull rod arranged obliquely is arranged in the waist round hole in a penetrating way, and the lower end of the pull rod is connected with a main shaft of a bus contact on-off operating mechanism which extends backwards along the horizontal direction;
the front end of the swing arm is fixedly connected with a cross rod, the middle part of the cross rod is provided with a switch hole, and the upper side and the lower side of the switch hole are respectively and fixedly connected with an L-shaped switch pulling piece;
The front section of the swing arm is provided with a pin shaft, a cam plate is hinged in the space between the swing arm and the side plate of the box body, an operation shaft is fixedly connected to the cam plate, and the operation end of the operation shaft penetrates through the side plate of the box body and extends out of the box body;
the cam plate is a sector plate, and the central angle corresponding to the sector plate is 90 degrees;
the operation shaft is a square shaft;
A pair of mounting lugs protruding backwards are arranged on two sides of the top end of the clamping plate, the mounting lugs are hinged to the side plate of the box body through bolts, and a reset spring is sleeved on the part of the bolts between the mounting lugs;
the reset spring is a cylindrical spiral torsion spring;
The cross section of the groove plate is of a transverse U-shaped structure to form a U-shaped groove plate, and the clamping hooks are C-shaped locking plates with opening directions opposite to the opening directions of the U-shaped groove plate;
The top plate is an L-shaped plate, and the front end of the top plate is fixedly connected to the inner side surface of the box door through a fixing plate;
And a bus contact connecting window is arranged outside the rear side plate of the box body, one end of a main shaft of the bus contact on-off operating mechanism is hinged on the middle partition plate of the box body through a mounting seat, and the other end of the main shaft extends out of the box body through the bus contact connecting window.
According to the multifunctional interlocking mechanism of the plug-in type distribution box, when the box door is opened, the clamping plate is located at the vertical position, the swing arm is limited to rotate upwards and cannot push the switch of the plastic shell circuit breaker to be closed, when the box door is closed, the clamping plate is pushed by the top plate to rotate away from the limiting position in the vertical direction, the swing arm can rotate upwards to push the switch of the plastic shell circuit breaker to be closed, and meanwhile, the main shaft of the bus contact on-off operation mechanism is driven to rotate through the interlocking plate and the pulling rod, so that the bus plug-in state is locked; in the closing process, the clamping hook is inserted into the groove plate to be matched and limited along with the swing arm in an upward rotation way, and the box door cannot be opened; the double interlocking functions of opening and closing interlocking of the cabinet door switch and the molded case circuit breaker and interlocking of the cabinet door switch and the bus power supply can be simultaneously completed through one-time operation, and the novel plastic case circuit breaker is simple and compact in structure, convenient to operate, small in size, safe and reliable.
1. The equipment can be inserted into the bus system only in the state of breaking the molded case circuit breaker through foolproof mechanical design and locked, so that potential safety hazards caused by on-load power connection and power extraction are avoided;
2. the operation shaft rotates forward, and the interlocking pulling molded case circuit breaker switch is switched on; the double interlocking device is mechanically driven during the closing operation: (1) The box body and the box door are locked, the box door cannot be opened under the condition that the power is on, operators cannot touch the electrified body, and personal safety is ensured; (2) The interlocking of the power taking equipment (distribution box) and the bus device (power supply body) is realized, and the distribution box cannot be pulled out under the condition of electrifying, so that personal injury caused by on-load plug-in is avoided;
3. The operation shaft reversely rotates, breaks, the interlocking pulling molded case circuit breaker switch breaks the brake, all the interlocking functions are released immediately, the distribution box is in a non-loaded state, the inside of the distribution box can be overhauled under the condition of absolute safety, and the distribution box can be safely removed (pulled out) at any time.
Drawings
Fig. 1 is a schematic view of a three-dimensional structure of a multifunctional interlocking mechanism of a plug-in distribution box according to an embodiment of the invention after a box body shell is removed;
fig. 2 is a schematic view of another perspective view of the multifunctional interlocking mechanism of the pluggable distribution box according to the embodiment of the invention after the box body shell is removed;
Fig. 3 is a schematic diagram of a three-dimensional structure of the multifunctional interlocking mechanism of the pluggable distribution box according to the embodiment of the invention after the box body shell and the box door are removed; ;
FIG. 4 is a schematic view of a perspective view of a multifunctional interlocking mechanism of a pluggable distribution box according to an embodiment of the present invention after a box body shell and a box door are removed; ;
Fig. 5 is a schematic diagram of a three-dimensional structure of a hook, a slot plate, a top plate and a clamping plate when the multifunctional interlocking mechanism of the plug-in type distribution box is switched on; ;
Fig. 6 to 9 are schematic views of a three-dimensional structure of a multifunctional interlocking mechanism of a plug-in distribution box according to an embodiment of the present invention after a box door is removed;
FIG. 10 is a schematic view of a multi-functional interlocking mechanism of a pluggable distribution box according to an embodiment of the present invention with a door removed;
FIG. 11 is a right side view of FIG. 10;
Fig. 12 is a schematic view of a rear plane structure of the multifunctional interlocking mechanism of the pluggable distribution box according to the embodiment of the invention, with a side plate of the box body removed.
Detailed Description
As shown in the figure, the multifunctional interlocking mechanism of the plug-in type distribution box is characterized in that the internal space of the plug-in type distribution box is divided into a front part and a rear part by a vertical middle partition plate, a plastic-case circuit breaker 2 is fixedly arranged on the front side surface of the vertical middle partition plate, a bus contact 3 is arranged at the rear part, a bus contact connecting window is arranged at the outer part of the rear side plate of the box, and the bus contact penetrates through the bus contact connecting window and stretches out to the outer part so as to be matched with a bus for plug-in; the front side of the box body is hinged with the box door 1 through a hinge, and the box door 1 can be opened or closed in a rotating way through the hinge.
Firstly, a cam plate 51 is hinged on a box body side plate of the plug-in type distribution box, the cam plate is a sector plate, the central angle selection range corresponding to the sector plate can be 60-120 degrees, the central angle selection in the embodiment is 90 degrees, and the manufacturing process is simple; the hinge shaft of the cam plate is a square shaft, and the square shaft penetrates through the side plate of the box body and extends out to the outside to form an operation shaft 5 which can be connected with an operation handle; a swing arm 4 is hinged to the position, corresponding to the cam plate, on the side plate of the box body, the rear section of the swing arm 4 is hinged to the side plate of the box body, a pin shaft is arranged at the front section of the swing arm, the cam plate is driven to rotate by an operating handle through the operating shaft, and the cam plate pushes the swing arm to rotate around a hinge point through the pin shaft; the front end of the swing arm is connected with a cross rod, a rectangular window is arranged in the middle of the cross rod to form a switch hole capable of accommodating a switch handle of the molded case circuit breaker, and the switch handle is pushed by the switch hole to operate the molded case circuit breaker to open or close when the swing arm rotates; the upper side and the lower side of the switch hole can be respectively and fixedly connected with the L-shaped switch pulling piece, and the switch pulling piece is contacted with the switch handle through the arc-shaped surface so as to avoid friction damage to the switch handle.
A clamping plate 12 is hinged to the position, above the front end of the swing arm 4, of the side plate of the box body, the clamping plate 12 is in a vertical position in a state that the box door is opened, and the swing arm is limited and prevented from rotating upwards, namely, the molded case circuit breaker cannot be closed.
A top plate 11 is fixedly arranged on the inner side surface of the door opening side of the door 1 and corresponds to the clamping plate 12, when the door is closed, the top plate props against the upper end of the clamping plate, the clamping plate is pushed to rotate around a hinge point to leave a limiting position in the vertical direction, the swing arm can rotate upwards to push a switch of the molded case circuit breaker to be closed, the top plate can push the clamping plate to rotate to a horizontal position, and the swing arm is flexible in operation; and an oblique limiting rod can be fixedly connected to the top end of the clamping plate to provide limiting.
A clamping hook 42 is fixedly arranged on the bottom surface of the swing arm 4 at a position close to the end part, a groove plate 10 is fixedly arranged on the inner side surface of the box door 1 at a position corresponding to the clamping hook 42, the cross section of the groove plate is of a transverse U-shaped structure to form a U-shaped groove plate, the clamping hook is a C-shaped locking plate with the opening direction opposite to the opening direction of the U-shaped groove plate, and when the swing arm 4 rotates upwards to close a door, the clamping hook 42 is driven to move upwards along the inner side edge of the groove plate 10, so that the groove plate is hooked in a limiting way, and the box door cannot be opened; when the swing arm rotates downwards to break the brake, the clamping hook is driven to leave the groove plate downwards, and the door can be opened.
The clamping plate can also be an L-shaped plate, two sides of the top end of the clamping plate are provided with a pair of mounting lugs protruding backwards, the mounting lugs are hinged on the side plate of the box body through bolts, a reset spring 13 is sleeved outside the part of the bolts between the mounting lugs, and the reset spring 13 is a cylindrical spiral torsion spring; the cardboard initial position sets up to vertical position, and reset spring energy storage when the roof promotes the cardboard rotation, and the chamber door is opened, and when the roof left the cardboard, the cardboard reset to vertical position under reset spring's elastic restoring force effect.
The middle part of the swing arm is hinged on a side plate of the box body, the rear end of the swing arm is hinged with an interlocking plate 9 in the vertical direction, a waist-round hole is formed in the middle part of the interlocking plate 9, a pull rod 8 which is obliquely designed is arranged in the waist-round hole in a penetrating way, the upper end of the pull rod 8 penetrates through the waist-round hole, and the lower end of the pull rod is fixedly connected to a main shaft 7 of a busbar contact on-off operation mechanism which extends backwards along the horizontal direction; when the swing arm rotates upwards to switch on, the interlocking plate 9 is driven to move downwards, the main shaft 7 of the bus contact on-off operation mechanism is driven by the pulling rod 8 to rotationally lock the bus contact, and the distribution box cannot be pulled out under the condition of electrifying, so that personal injury caused by on-load plug-in is avoided; when the swing arm rotates downwards to break the brake, the main shaft 7 of the bus contact on-off operating mechanism is driven to rotate and unlock through the pulling rod 8, so that the distribution box can be plugged and unplugged;
The upper end of the interlocking plate 9 is hinged to the rear end of the swing arm, a long waist hole is formed in the lower end of the interlocking plate to form a guide hole, a bolt or a guide rod is penetrated in the guide hole, and the lower end of the interlocking plate is positioned and installed on a side plate or a middle partition plate of the box body through the guide rod; and a limit bolt can be arranged at a position close to the upper part of the interlocking plate, so that the action stability of the interlocking plate is ensured.
Further, the top plate is an L-shaped plate, the front end of the top plate is fixedly connected to the inner side surface of the box door through the fixing plate, the strength is high, and the action is reliable.
Further, one end of a main shaft of the bus contact on-off operation mechanism is hinged on the middle partition plate of the box body through the mounting seat, and the other end of the main shaft penetrates through the bus contact connection window to extend out of the box body, so that the limit is reliable.
According to the multifunctional interlocking mechanism of the plug-in type distribution box, when the box door is opened, the clamping plate is located at the vertical position, the swing arm is limited to rotate upwards and cannot push the switch of the plastic shell circuit breaker to be closed, when the box door is closed, the clamping plate is pushed by the top plate to rotate away from the limiting position in the vertical direction, the swing arm can rotate upwards to push the switch of the plastic shell circuit breaker to be closed, and meanwhile, the main shaft of the bus contact on-off operation mechanism is driven to rotate through the interlocking plate and the pulling rod, so that the bus plug-in state is locked; in the closing process, the clamping hook is inserted into the groove plate to be matched and limited along with the swing arm in an upward rotation way, and the box door cannot be opened; the double interlocking functions of opening and closing interlocking of the cabinet door switch and the molded case circuit breaker and interlocking of the cabinet door switch and the bus power supply can be simultaneously completed through one-time operation, and the novel plastic case circuit breaker is simple and compact in structure, convenient to operate, small in size, safe and reliable.
1. The equipment can be inserted into the bus system only in the state of breaking the molded case circuit breaker through foolproof mechanical design and locked, so that potential safety hazards caused by on-load power connection and power extraction are avoided;
2. the operation shaft rotates forward, and the interlocking pulling molded case circuit breaker switch is switched on; the double interlocking device is mechanically driven during the closing operation: (1) The box body and the box door are locked, the box door cannot be opened under the condition that the power is on, operators cannot touch the electrified body, and personal safety is ensured; (2) The interlocking of the power taking equipment (distribution box) and the bus device (power supply body) is realized, and the distribution box cannot be pulled out under the condition of electrifying, so that personal injury caused by on-load plug-in is avoided;
3. The operation shaft reversely rotates, breaks, the interlocking pulling molded case circuit breaker switch breaks the brake, all the interlocking functions are released immediately, the distribution box is in a non-loaded state, the inside of the distribution box can be overhauled under the condition of absolute safety, and the distribution box can be safely removed (pulled out) at any time.
The specific technical scheme is as follows:
Pluggable double-interlocking distribution box for bus system;
In order to ensure the safety of equipment electricity consumption, when the bus unit is powered on, the distribution box must ensure: 1. the operation personnel performs closing operation on the breaker (or other components) in a state that the cabinet door of the operation personnel is closed; 2. the power taking unit cannot perform plugging operation under the loaded state. The products on the market at present are two relatively independent interlocking devices, two operations are needed, and the functions are realized through a certain operation sequence. In practice, the steps performed by the operator are cumbersome and the interlock release is too mechanical (requiring special tools to accomplish).
The purpose is as follows:
(1) The plug-in type mobile power supply system is convenient to connect with the bus system, and the safety can be greatly improved by interlocking;
(2) Realizes one-time operation and double interlocking, and has simpler operation steps.
The main technical scheme of the interlocking type distribution box is as follows:
1. The equipment can be inserted into the bus system only in the state of breaking the breaker through foolproof mechanical design and locked, so that potential safety hazards caused by on-load power taking and receiving are avoided;
2. The circuit breaker operating handle is subjected to rotary switching-on operation, a set of special double interlocking mechanical devices are used for converting a circular working track formed by side rotary operation into a translational motion track in the vertical direction of the front surface, the circuit breaker operating lever is poked, and the circuit breaker is switched on successfully;
3. The interlocking device is mechanically driven in the switching-on operation process: (1) The box body and the box door can be locked, so that the box door cannot be opened under the condition of electrifying the distribution box, operators cannot touch the electrified body, and personal safety is ensured; (2) The power taking equipment (distribution box) and the bus bar device (power supply body) can be interlocked, so that the distribution box can not be pulled out under the condition of electrifying, namely personal injury caused by pulling out with load is avoided.
4. The breaker operating handle is subjected to reverse rotation breaking operation, the breaker operating rod is pulled out according to the principle, the breaker is successfully opened, meanwhile, all interlocking functions are released immediately, the state is in a state without load, the inside of the distribution box can be overhauled under the condition of absolute safety, and the distribution box can be safely removed (pulled out) at any time.
The prior art comprises the following steps: the two interlocking structures are relatively independent, and the interlocking relationship can be realized only by step operation.
The invention comprises the following steps: the invention can realize double interlocking by only one operation, has reliable interlocking performance, and has the characteristics of simple operation, safe use, maintenance and overhaul for operators, and the like.
Claims (10)
1. A plug-in type multifunctional interlocking mechanism of a distribution box is characterized in that: the power distribution box comprises a plug-in type power distribution box body, wherein a plastic shell circuit breaker is fixedly arranged in the box body through a vertical middle partition plate, a box door capable of being opened in a rotating mode is arranged on the front side of the box body, and a bus contact is arranged on the rear portion of the box body; a swing arm capable of pushing a switch of the molded case circuit breaker to operate on/off is hinged on a side plate of the box body, a clamping plate is hinged on the side plate of the box body above the front end of the swing arm, and a top plate capable of pushing the clamping plate to rotate around a hinge point is fixedly arranged on the inner side surface of the box door at a position corresponding to the clamping plate; a clamping hook is fixedly arranged on the bottom surface of the swing arm at a position close to the end part, and a groove plate which can be matched and limited with the clamping hook is fixedly arranged on the inner side surface of the box door at a position corresponding to the clamping hook; the swing arm middle part is articulated to be installed on the box curb plate, and the rear end hinge connection has the interlocking board that sets up along vertical direction, and the interlocking board middle part is provided with the waist round hole, runs through in the waist round hole to be provided with the dead lever that the slant set up, and dead lever lower extreme is connected with a busbar contact break-make operating mechanism main shaft that extends backward along the horizontal direction.
2. The pluggable utility model as defined in claim 1, wherein: the swing arm front end fixedly connected with horizontal pole, the horizontal pole middle part is provided with the switch hole, and the upper and lower both sides of switch hole are fixedly connected with L shape switch pull tab respectively.
3. The pluggable utility model as defined in claim 1, wherein: the front section of the swing arm is provided with a pin shaft, a cam plate is hinged in the space between the swing arm and the side plate of the box body, an operation shaft is fixedly connected to the cam plate, and the operation end of the operation shaft penetrates through the side plate of the box body and extends out of the box body.
4. A plug-in utility box multi-function interlock mechanism according to claim 3, wherein: the cam plate is a sector plate, and the central angle corresponding to the sector plate is 90 degrees.
5. A plug-in utility box multi-function interlock mechanism according to claim 3, wherein: the operation shaft is a square shaft.
6. The pluggable utility model as defined in claim 1, wherein: the clamping plate is characterized in that a pair of mounting lugs protruding backwards are arranged on two sides of the top end of the clamping plate, the mounting lugs are hinged to the side plate of the box body through bolts, and a reset spring is sleeved on the portion, located between the mounting lugs, of the bolts.
7. The pluggable utility model as defined in claim 6, wherein: the return spring is a cylindrical spiral torsion spring.
8. The pluggable utility model as defined in claim 1, wherein: the cross section of the groove plate is of a transverse U-shaped structure to form a U-shaped groove plate, and the clamping hooks are C-shaped locking plates with opening directions opposite to the opening directions of the U-shaped groove plate.
9. The pluggable utility model as defined in claim 1, wherein: the roof is L shaped plate, and roof front end passes through fixed plate fixed connection on the chamber door medial surface.
10. The pluggable utility model as defined in claim 1, wherein: and a bus contact connecting window is arranged outside the rear side plate of the box body, one end of a main shaft of the bus contact on-off operating mechanism is hinged on the middle partition plate of the box body through a mounting seat, and the other end of the main shaft extends out of the box body through the bus contact connecting window.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365723.4A CN110112671B (en) | 2019-05-05 | 2019-05-05 | Plug-in type multifunctional interlocking mechanism of distribution box |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910365723.4A CN110112671B (en) | 2019-05-05 | 2019-05-05 | Plug-in type multifunctional interlocking mechanism of distribution box |
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| Publication Number | Publication Date |
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| CN110112671A CN110112671A (en) | 2019-08-09 |
| CN110112671B true CN110112671B (en) | 2024-04-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201910365723.4A Active CN110112671B (en) | 2019-05-05 | 2019-05-05 | Plug-in type multifunctional interlocking mechanism of distribution box |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110752567B (en) * | 2019-10-29 | 2021-09-21 | 威腾电气集团股份有限公司 | Jack box with triple interlocking function |
| CN113597175B (en) * | 2021-08-24 | 2023-03-17 | 卫蓝(平潭)科技有限公司 | Mobile communication terminal equipment with external multiple protection |
| CN114927963B (en) * | 2022-05-09 | 2023-04-07 | 苏州明捷精密机械有限公司 | Power distribution cabinet panel with locking mechanism |
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| CN110112671A (en) | 2019-08-09 |
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