CN108879260B - Mechanical interlocking device suitable for plugs and sockets with different currents - Google Patents
Mechanical interlocking device suitable for plugs and sockets with different currents Download PDFInfo
- Publication number
- CN108879260B CN108879260B CN201810922156.3A CN201810922156A CN108879260B CN 108879260 B CN108879260 B CN 108879260B CN 201810922156 A CN201810922156 A CN 201810922156A CN 108879260 B CN108879260 B CN 108879260B
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- CN
- China
- Prior art keywords
- socket
- plug
- sliding clamping
- clamping rod
- circuit breaker
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R27/00—Coupling parts adapted for co-operation with two or more dissimilar counterparts
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/46—Bases; Cases
- H01R13/502—Bases; Cases composed of different pieces
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
- H01R13/639—Additional means for holding or locking coupling parts together, after engagement, e.g. separate keylock, retainer strap
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
- H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
- H01R13/66—Structural association with built-in electrical component
- H01R13/70—Structural association with built-in electrical component with built-in switch
Landscapes
- Details Of Connecting Devices For Male And Female Coupling (AREA)
Abstract
The invention discloses a mechanical interlocking device suitable for plugs and sockets with different currents, which comprises a mounting panel, a socket, an interlocking mechanism and an operator, wherein the socket is arranged on the mounting panel, the interlocking mechanism comprises a fixed plate, a sliding clamping rod and a movable blocking piece, the fixed plate is provided with the sliding clamping rod, the sliding clamping rod can slide left and right on the fixed plate, one end of the sliding clamping rod is provided with a limit key, the sliding clamping rod is in linkage fit with the operator, the operator is connected with a circuit breaker, one end of the movable blocking piece is arranged on the mounting panel, the other end of the movable blocking piece is arranged at a key slot of the socket, the limit key is arranged on one side of the movable blocking piece, the sliding clamping rod is also provided with a card, and the card is of a protruding structure close to the limit key and can clamp the front end of the plug when the sliding clamping rod slides leftwards. The beneficial effects of the invention are as follows: the plug can be plugged and unplugged only when the main circuit is not powered, so that the power utilization safety is ensured; the power supply device is suitable for working conditions such as simultaneous power supply of multiple sockets.
Description
Technical Field
The invention relates to an industrial socket, in particular to a mechanical interlocking device suitable for plugs and sockets with different current specifications.
Background
In the application occasions such as large-capacity electrical equipment for industrial use or ports and wharfs, when a plug is plugged into a socket or pulled out of the socket, electric arcs are easy to generate under the condition of live operation, and damage to electrical elements or operators is easy to cause. In the prior art, an electric interlocking device is adopted to enable the plugging operation to be uncharged, howeverWhen (when)When the mechanical action time of the electrical element is smaller than the separation action time of the circuit contact (electrode), unsafe conditions such as that the operation process of pulling out the plug is still in a charged state or the plug is inserted in the charged state are easily generated.
Disclosure of Invention
The invention aims to provide a mechanical interlocking device, which is used for realizing mechanical interlocking between a control breaker and 1 socket or between the control breaker and a plurality of (1-3) sockets when the device is needed, so that when an operation plug is plugged into the socket to be connected or is plugged out of the socket, a power circuit switch is in an off state, no live operation is generated, and damage to electric elements or operators caused by danger of the live operation or arc generation is prevented. Moreover, the mechanical interlock of the present invention is capable of mechanically interlocking not only with smaller current receptacles (e.g., 32A through 125A) but also with high current receptacles (e.g., 250A through 1250A).
The technical scheme adopted by the invention is as follows: the utility model provides a mechanical interlock suitable for different electric current plug socket, includes installation panel, socket, interlocking device, manipulator, the socket is located on the installation panel, interlocking device includes fixed plate, slip draw-in lever, activity separation blade, be equipped with on the fixed plate slip draw-in lever just slip draw-in lever can left and right sides on the fixed plate, slip draw-in lever one end is equipped with spacing key, the slip draw-in lever other end is connected with the lug, be equipped with the recess in the lug, the manipulator is connected with the wheel of dialling, be equipped with the toggle pin on the wheel of dialling, the toggle pin be located the recess and with recess linkage cooperation, the manipulator is connected with the circuit breaker, activity separation blade one end is located on the installation panel, and the keyway department of socket is located to the other end, activity separation blade one side is located to spacing key, still be equipped with the card on the slip draw-in lever, the card is the protruding structure that is close to spacing key and when slip draw-in lever slip when the card can block the plug front end and make the plug can not pull out.
Preferably, a fixed block is arranged on the installation panel, a compression spring is arranged in the fixed block, the compression spring is connected with one end of the movable baffle, and the movable baffle clings to the installation panel under the action of the compression spring.
Preferably, the socket and the interlocking mechanism are one or more groups, and the socket and the interlocking mechanism are in one-to-one correspondence.
Preferably, the mounting panel is provided with a breaker mounting bracket, and the breaker is fixed by the breaker mounting bracket.
Preferably, the manipulator is fixedly connected with the poking wheel, the manipulator is in a strip shape, and the rotation of the manipulator can control the opening and closing of the circuit breaker.
Preferably, the fixed plate is provided with a sliding groove, and the sliding clamping rod slides left and right in the sliding groove.
Preferably, when the plug is not inserted into the socket, the movable baffle is tightly attached to the mounting panel under the pressure of the pressing spring, the sliding clamping rod is limited to slide leftwards through the limit key, and the actuator enables the circuit breaker to be in a power-off state; when the plug is inserted into the socket, the movable baffle is propped open, the limit key is not limited by the movable baffle, the sliding clamping rod slides leftwards, and the operator rotates to enable the circuit breaker to be connected.
Preferably, when the plug is inserted, the movable sliding clamping rod is jacked up to be separated from the limit of the limit key, the sliding clamping rod slides leftwards, and the clamping piece is clamped to the key hole so that the plug cannot be pulled out; when the poking wheel is rotated and the circuit breaker is disconnected by the operator, the poking pin pushes the sliding clamping rod to slide rightwards, the card moves rightwards away from the key hole, and the plug can be pulled out.
Compared with the prior art, the invention has the beneficial effects that:
1. the plug can be plugged and unplugged only when the main circuit is not powered, the safety measures are mandatory, the influence of factors such as circuit action time and the like can be avoided, and the power utilization safety is ensured.
2. The mechanical interlock of the present invention is capable of mechanically interlocking not only with smaller current receptacles (e.g., 32A through 125A) but also with high current receptacles (e.g., 250A through 1250A).
3. The invention can realize mechanical interlocking of the breaker and the socket as 1 to 1 socket, can also be 1 to 2 socket and 1 to 3 socket, and is suitable for working conditions such as simultaneous power supply of multiple sockets such as multiple cable on-board (or on-board).
4. The technical scheme of the invention ensures that the discharge positions of the circuit breaker and the socket are suitable for the use working condition and convenient to operate.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic diagram of the cross-section of fig. 1 of the present invention.
Fig. 3 is a schematic view of the structure of the circuit breaker of the present invention when opened.
Fig. 4 is a schematic view of the circuit breaker of the present invention in a connected configuration.
Fig. 5 is a schematic structural diagram of a second embodiment of the present invention.
Fig. 6 is a schematic structural diagram of a third embodiment of the present invention.
Fig. 7 is a side view of fig. 1 of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
Example 1
As shown in fig. 1 and 2, a mechanical interlocking device suitable for plug and socket with different currents comprises a mounting panel 1, a socket 2, an interlocking mechanism 3 and an operator 4, wherein the socket 2 is arranged on the mounting panel 1, the interlocking mechanism 3 comprises a fixed plate 31, a sliding clamping rod 32 and a movable baffle 33, the fixed plate 31 is provided with the sliding clamping rod 32 and the sliding clamping rod 32 can slide left and right on the fixed plate 31, one end of the sliding clamping rod 32 is provided with a limit key 34, the other end of the sliding clamping rod 32 is connected with a bump 35, a groove 36 is arranged in the bump 35, the operator 4 is connected with a poking wheel 5, the poking wheel 5 is provided with a poking pin 6, the poking pin 6 is positioned in the groove 36 and is in linkage fit with the groove 36, the operator 4 is connected with the operator 7, one end of the movable baffle 33 is arranged on the mounting panel 1, the other end of the movable baffle 33 is arranged at the key slot 21 of the socket 2, the limit key 34 is arranged on one side of the movable baffle 33, the sliding clamping rod 32 is further provided with a card 37, and the card 37 is arranged on the sliding clamping rod 32 and is close to the left side of the limit key 37 when the card 37 is close to the protruding to the limit key 34 and can slide the front end of the card 32.
The mounting panel 1 is provided with a fixed block 38, a compression spring 39 is arranged in the fixed block 38, the compression spring 39 is connected with one end of the movable baffle 33, and the movable baffle 33 is tightly attached to the mounting panel 1 under the action of the compression spring 39.
The socket 2 and the interlocking mechanism 3 are a group.
The mounting panel 1 is provided with a breaker mounting bracket 8, and the breaker 7 is fixed by the breaker mounting bracket 8.
The actuator 4 is fixedly connected with the poking wheel 5, the actuator 4 is in a strip shape, and the opening and closing of the circuit breaker 7 can be controlled by the rotation of the actuator 4.
The fixed plate 31 is provided with a sliding groove, and the sliding clamping rod 32 slides left and right in the sliding groove.
In the use process, as shown in fig. 3, when the actuator 4 is at the disconnection position of the circuit breaker 7, the movable baffle 33 is under the pressure of the compression spring 39, the lower part of the movable baffle 33 is clung to the mounting panel 1, the movable baffle 33 is positioned at the front end position of the key hole of the socket, the limit key 34 of the sliding clamping rod is propped against one side of the movable baffle to prevent the sliding clamping rod of the interlocking mechanism from sliding leftwards, the circuit breaker actuator cannot operate, namely the actuator cannot be downwards pulled to rotate, so that the circuit breaker is in a power-off state under the condition that no plug is inserted into the socket, and the circuit breaker is ensured to be in a disconnection state under the condition that the plug is inserted into the socket.
As shown in fig. 4, when the plug is inserted into the socket, the plug pushes the movable baffle plate open, at this time, the limit key of the sliding clamping rod is not limited, the sliding clamping rod can slide leftwards, the circuit breaker operator can pull downwards to rotate, so that the circuit breaker is switched on, and meanwhile, the interlocking mechanism sliding clamping rod is provided with a card to clamp the key hole of the plug, so that the plug cannot be pulled out.
When the plug is to be pulled out of the socket, the operator must be pulled first to enable the circuit breaker to be in the off state position, the sliding clamping rod moves, and the clamping piece of the sliding clamping rod is also separated from the position of clamping the front end of the plug, so that the plug can be pulled out, and the plug is ensured not to be electrified during pulling out.
Example two
As shown in fig. 5, the other embodiments are the same as embodiment 1, except that the two sets of interlocking mechanisms and the two sockets are two sets of interlocking mechanisms, the interlocking mechanisms are simultaneously limited by two movable blocking pieces, when only 2 plugs are simultaneously inserted, all the movable blocking pieces are moved away, the actuator can be operated to switch on the circuit breaker, and meanwhile, the sliding clamping rods of the two interlocking mechanisms respectively clamp the front ends of the plugs through the clamping pieces, so that the plugs cannot be pulled out. When the plug is to be pulled out of the socket, the manipulator is required to be pulled first to enable the circuit breaker to be in the off state, and at the moment, the clamping pieces on the two sliding clamping rods of the interlocking mechanism are respectively separated from the positions for clamping the front ends of the plugs, so that each plug can be pulled out.
Example III
As shown in fig. 6, the other embodiments are the same as embodiment 1, except that the interlocking mechanism and the socket are three groups, the interlocking mechanism is simultaneously limited by three movable blocking pieces, and only when 3 plugs are simultaneously inserted, all the movable blocking pieces are moved away, the actuator can be operated to switch on the circuit breaker, and meanwhile, the sliding clamping rods of the three interlocking mechanisms respectively clamp the front ends of the plugs through the clamping pieces, so that the plugs cannot be pulled out. When the plug is to be pulled out of the socket, the manipulator is required to be pulled first to enable the circuit breaker to be in an off state, and at the moment, the clamping pieces on the three sliding clamping rods of the interlocking mechanism are respectively separated from the positions for clamping the front ends of the plugs, so that each plug can be pulled out.
The invention can be used for electric devices with mechanical interlocking safety control for sockets used in industrial applications, ports and wharfs and the like, in particular to a crane power box with larger capacity, and can be simultaneously used as a shore power box for shore ship power connection (power grid power supply on shore).
The device has larger electric capacity, and under the voltage of 1000V, the current can be controlled by the circuit breaker and the output socket of the output socket from 32A to 125A or 250A to 1250A to realize mechanical interlocking. The invention solves the problem that the plug and socket of the large and small current accords with the mechanical and electrical safety standards of international IEC and Chinese GB standards.
The above embodiments are only for illustrating the technical solution of the present invention, and not for limiting the same; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit of the invention.
Claims (5)
1. The utility model provides a mechanical interlocking device suitable for different electric current plug and socket, its characterized in that, including installation panel (1), socket (2), interlocking device (3), manipulator (4), on installation panel (1) was located to socket (2), interlocking device (3) include fixed plate (31), slip bayonet catch (32), activity separation blade (33), be equipped with slip bayonet catch (32) on fixed plate (31) just slip bayonet catch (32) can left and right sides on fixed plate (31), slip bayonet catch (32) one end is equipped with spacing key (34), slip bayonet catch (32) other end is connected with lug (35), be equipped with recess (36) in lug (35), manipulator (4) are connected with stir wheel (5), stir round (5) are last to be equipped with stir round pin (6), stir round pin (6) be located recess (36) and with recess (36) linkage cooperation, manipulator (4) are connected with circuit breaker (7), install keyway (21) on movable separation blade (33) one end, the other end is located on locating (32) of bayonet catch (21), the card (37) is of a protruding structure close to the limit key (34), when the sliding clamping rod (32) slides to the left, the card (37) can clamp the front end of the plug (22), a fixed block is arranged on the installation panel (1), a compression spring (39) is arranged in the fixed block, the compression spring (39) is connected with one end of the movable blocking piece (33), the movable blocking piece (33) is tightly attached to the installation panel (1) under the action of the compression spring (39), the actuator (4) is fixedly connected with the poking wheel (5), the actuator (4) is of a strip shape, the actuator (4) rotates to control the opening and closing of the circuit breaker (7), when the plug (22) is not inserted into the socket (2), the movable blocking piece (33) is tightly attached to the installation panel (1) under the pressure of the compression spring (39), the sliding clamping rod (32) is limited to the left through the limit key (34), and the actuator (4) enables the circuit breaker (7) to be in a power-off state; when the plug (22) is inserted into the socket (2), the movable baffle plate (33) is propped open, the limit key (34) is not limited by the movable baffle plate (33), the sliding clamping rod (32) slides leftwards, and the actuator (4) rotates to enable the circuit breaker (7) to be connected.
2. Mechanical interlocking device for plug and socket of different currents according to claim 1, characterized in that the socket (2) and the interlocking mechanism (3) are one or more groups, the socket and the interlocking mechanism being in one-to-one correspondence.
3. Mechanical interlocking device suitable for different current plugs and sockets according to claim 1, characterized in that the mounting panel (1) is provided with a circuit breaker mounting bracket (8), the circuit breaker (7) being fixed by the circuit breaker mounting bracket (8).
4. Mechanical interlocking device for plug and socket of different currents according to claim 1, characterized in that the fixed plate (31) is provided with a sliding groove, and the sliding clamping rod (32) slides left and right in the sliding groove.
5. Mechanical interlocking device for plug and socket of different currents according to claim 1, characterized in that when the plug (22) is inserted, the sliding clamping bar (32) slides to the left, the card (37) is clamped to the key hole (23) so that the plug (22) cannot be pulled out; when the toggle wheel (5) is rotated and the circuit breaker (7) is disconnected by the operator (4), the toggle pin (6) pushes the sliding clamping rod (32) to slide rightwards, the card (37) moves rightwards away from the key hole (23), and the plug (22) can be pulled out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922156.3A CN108879260B (en) | 2018-08-14 | 2018-08-14 | Mechanical interlocking device suitable for plugs and sockets with different currents |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810922156.3A CN108879260B (en) | 2018-08-14 | 2018-08-14 | Mechanical interlocking device suitable for plugs and sockets with different currents |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108879260A CN108879260A (en) | 2018-11-23 |
| CN108879260B true CN108879260B (en) | 2023-08-22 |
Family
ID=64317984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810922156.3A Active CN108879260B (en) | 2018-08-14 | 2018-08-14 | Mechanical interlocking device suitable for plugs and sockets with different currents |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108879260B (en) |
Citations (13)
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| GB2068651A (en) * | 1980-01-19 | 1981-08-12 | Mk Electric Ltd | Improvements relating to electrical socket outlets |
| CN2228685Y (en) * | 1995-03-13 | 1996-06-05 | 天津市第六电器开关厂 | Step interlocking false operation proof switch for machine-room |
| CN2729891Y (en) * | 2004-09-25 | 2005-09-28 | 汕头正超电气有限公司 | Shutting releasing device for VSI circuit breaker in fixed switch cubicle |
| CN200953291Y (en) * | 2006-09-12 | 2007-09-26 | 上海电器股份有限公司人民电器厂 | Interlocking device for draw type plastic case circuit breaker |
| CN102227055A (en) * | 2011-03-23 | 2011-10-26 | 江苏华冠电器集团有限公司 | Secondary interlocking mechanism of switch cabinet |
| CN102769236A (en) * | 2012-01-06 | 2012-11-07 | 佛山市海默工业技术有限公司 | Mechanical interlocking socket |
| CN202601860U (en) * | 2012-06-08 | 2012-12-12 | 内蒙古东部电力有限公司通辽电业局 | Misoperation-preventive locking device of grounding pile |
| CN105070556A (en) * | 2015-07-29 | 2015-11-18 | 武汉中直电气股份有限公司 | Direct current fast breaker handcart advancing interlocking device |
| CN205159150U (en) * | 2015-10-20 | 2016-04-13 | 珠海沃顿电气有限公司 | Maloperation interlock is prevented to circuit breaker |
| CN205264543U (en) * | 2016-01-05 | 2016-05-25 | 山东泰开成套电器有限公司 | Circuit breaker and secondary plug socket interlock |
| WO2017023111A2 (en) * | 2015-08-03 | 2017-02-09 | 공주대학교 산학협력단 | Socket outlet and interlock device for socket outlet |
| CN206864770U (en) * | 2017-05-19 | 2018-01-09 | 建德鑫鼎纤维材料有限公司 | It is a kind of power off safely push away Weft handling device |
| CN108011261A (en) * | 2017-12-07 | 2018-05-08 | 黄均杰 | A kind of household wall electrical source socket |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101078955B1 (en) * | 2010-03-23 | 2011-11-01 | 엘에스산전 주식회사 | Plug interlock device for vacuum circuit breaker |
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2018
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2068651A (en) * | 1980-01-19 | 1981-08-12 | Mk Electric Ltd | Improvements relating to electrical socket outlets |
| CN2228685Y (en) * | 1995-03-13 | 1996-06-05 | 天津市第六电器开关厂 | Step interlocking false operation proof switch for machine-room |
| CN2729891Y (en) * | 2004-09-25 | 2005-09-28 | 汕头正超电气有限公司 | Shutting releasing device for VSI circuit breaker in fixed switch cubicle |
| CN200953291Y (en) * | 2006-09-12 | 2007-09-26 | 上海电器股份有限公司人民电器厂 | Interlocking device for draw type plastic case circuit breaker |
| CN102227055A (en) * | 2011-03-23 | 2011-10-26 | 江苏华冠电器集团有限公司 | Secondary interlocking mechanism of switch cabinet |
| CN102769236A (en) * | 2012-01-06 | 2012-11-07 | 佛山市海默工业技术有限公司 | Mechanical interlocking socket |
| CN202601860U (en) * | 2012-06-08 | 2012-12-12 | 内蒙古东部电力有限公司通辽电业局 | Misoperation-preventive locking device of grounding pile |
| CN105070556A (en) * | 2015-07-29 | 2015-11-18 | 武汉中直电气股份有限公司 | Direct current fast breaker handcart advancing interlocking device |
| WO2017023111A2 (en) * | 2015-08-03 | 2017-02-09 | 공주대학교 산학협력단 | Socket outlet and interlock device for socket outlet |
| CN205159150U (en) * | 2015-10-20 | 2016-04-13 | 珠海沃顿电气有限公司 | Maloperation interlock is prevented to circuit breaker |
| CN205264543U (en) * | 2016-01-05 | 2016-05-25 | 山东泰开成套电器有限公司 | Circuit breaker and secondary plug socket interlock |
| CN206864770U (en) * | 2017-05-19 | 2018-01-09 | 建德鑫鼎纤维材料有限公司 | It is a kind of power off safely push away Weft handling device |
| CN108011261A (en) * | 2017-12-07 | 2018-05-08 | 黄均杰 | A kind of household wall electrical source socket |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108879260A (en) | 2018-11-23 |
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