CN107068452A - Miniature double power supply automatic transfer switch - Google Patents
Miniature double power supply automatic transfer switch Download PDFInfo
- Publication number
- CN107068452A CN107068452A CN201710418096.7A CN201710418096A CN107068452A CN 107068452 A CN107068452 A CN 107068452A CN 201710418096 A CN201710418096 A CN 201710418096A CN 107068452 A CN107068452 A CN 107068452A
- Authority
- CN
- China
- Prior art keywords
- breaker
- power supply
- automatic transfer
- separating brake
- cam
- 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
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
Abstract
The present invention relates to a kind of miniature double power supply automatic transfer switch, including automatic transfer equipment, conventional breaker, back-up breaker, automatic transfer equipment includes housing, intelligent control wiring board, mechanism rack, motor, bevel gear, two groups of transmission components, transmission component includes the travelling gear set that linked with bevel gear, link the cam set with travelling gear, the transition arm for driving conventional circuit breaker handle/back-up breaker handle is rotatably arranged in mechanism rack and is used at correspondence cam, cam rotates with travelling gear and transition arm can be driven to rotate, place is movably set with separating brake part between correspondence travelling gear and cam in mechanism rack, travelling gear freely coordinates with separating brake part on combined floodgate direction, it is linked on separating brake direction, the interlocking mechanism being linked with transition arm is provided with housing, intelligent control wiring board controlled motor is rotated forward, reversion, stopping is acted.The present invention has the advantages that compact conformation, high reliability, install convenient, safe and reliable, small volume.
Description
Technical field
The present invention relates to low voltage electrical apparatus technology field, and in particular to a kind of miniature double power supply automatic transfer switch.
Background technology
Double power supply automatic transfer switch is a kind of conventional low-voltage electrical apparatus, is usually used in the conversion between two road power supplys, to protect
Card is when power failure all the way or when stopping power supply, and another road power supply can be switched over rapidly, to ensure that load circuit is normal
Power supply.Many industries and department have very high requirement to the reliability of power supply, many in order to ensure the continuity of power supply
Important occasion is all powered using double power supply automatic transfer switch, the indispensable device switched as electric energy, double power-supply automatic transferring
The application demand of switch is more and more extensive, technical property requirements also more and more higher.Existing double power supply automatic transfer switch from
Dynamic conversion equipment has that structure design is unreasonable, complicated, causes the volume of whole double power supply automatic transfer switch larger, and
And easily cause killer switch break-make and stir not in place, and then had a strong impact on the working stability of double power supply automatic transfer switch
Property, the shape of conventional stand-by power supply parallel running occurs in the situation generation for causing electric interlock and mechanical interlocking to fail when serious
State, so as to cause load equipment scaling loss, has potential safety hazard.
The content of the invention
It is an object of the invention to overcome the defect of prior art can there is provided a kind of compact conformation, high reliability, safety
Lean on, the miniature double power supply automatic transfer switch of small size, install convenient.
To achieve the above object, a kind of miniature double power supply automatic transfer switch of present invention use, including automatic transfer equipment,
The conventional breaker being connected with conventional power supply, the back-up breaker being connected with stand-by power supply, it is described conventional breaker, standby disconnected
Road device is separately positioned on the both sides of automatic converter device, and described automatic transfer equipment includes housing, the intelligence being arranged in housing
Energy control circuit board, the mechanism rack being arranged in housing, the motor being arranged in housing, the umbrella being arranged on the output shaft of motor
Gear, it is symmetrically distributed in bevel gear both sides and the two groups of transmission components set that linked with bevel gear, described transmission component includes
Mechanism is rotatably arranged at travelling gear, the cam set with travelling gear linkage, corresponding cam with bevel gear linkage setting
On frame and for driving the transition arm of conventional circuit breaker handle/back-up breaker handle, described cam is rotated with travelling gear
And transition arm can be driven to rotate, place is movably set with separating brake part between correspondence travelling gear and cam in described mechanism rack, and
Travelling gear freely coordinates on combined floodgate direction with separating brake part, is linked on separating brake direction, is provided with described housing
The interlocking mechanism being linked with described transition arm, described intelligent control wiring board controlled motor is rotated forward, inverted, stopping moving
Make.
The beneficial effect of said structure is：The structure of the automatic transfer equipment of the double power supply automatic transfer switch is more compact
Simplify, small volume, manufacturing cost is more cheap, can meet the automatic switchover of two-supply circuit in most cases.And pass
Separating brake part is provided between moving gear and cam, in separating brake, travelling gear is linked with separating brake part, when closing a floodgate, transmission
Gear freely coordinates with separating brake part, and the double power supply automatic transfer switch is when switching two-way power supply, and separating brake part can drive convex in advance
Wheel performs separating brake action, so that the double power supply automatic transfer switch can realize the mesh closed a floodgate after first separating brake when changing two-way power supply
's；Interlocking mechanism is provided with mechanism rack, the interlocking mechanism can be prevented effectively from conventional breaker, back-up breaker and close simultaneously
Lock.There is compact conformation so as to the double power supply automatic transfer switch, it is high reliability, small volume, safe and reliable.
Especially, described travelling gear is set towards being provided with the side of cam on drive lugs, described cam
There is the projection being engaged with drive lugs, described drive lugs rotate with travelling gear and projection can be promoted to act and constitute and pass
Moving gear and cam are linked.By being provided with the drive lugs being engaged with cam, drive lugs on travelling gear
After driving cam to closing position, motor driving travelling gear revolution, drive lugs are turned back to original position, so that drive lugs will not
Cam revolution is limited, transition arm can perform revolution action, so as to not interfere with manual point of conventional breaker or back-up breaker
Lock.
Especially, rotating shaft is provided with the top of described separating brake part, axis of rotation is arranged in mechanism rack, on separating brake part
It is connected to respectively by a reset tension spring in mechanism rack on the both sides in portion, the lower end of separating brake part extends in drive lugs and projection
Between, described drive lugs freely coordinate on combined floodgate direction with separating brake part, are linked on separating brake direction.By passing
Dynamic that separating brake part is provided between projection and projection, in separating brake, drive lugs are linked with separating brake part, when closing a floodgate, transmission
Projection freely coordinates with separating brake part, and the double power supply automatic transfer switch is when switching two-way power supply, and driving cam can pass through separating brake
Part can shift to an earlier date driving cam and perform separating brake action, so that the double power supply automatic transfer switch can realize elder generation when changing two-way power supply
The purpose closed a floodgate after separating brake, improves reliability, the security performance of double power supply automatic transfer switch work.
Especially, described interlocking mechanism includes the main shaft being arranged in housing, be rotatably arranged on main shaft first
Jam plate, the first extension spring being connected between the first interlock plate and mechanism rack, linking at the trip shaft of corresponding back-up breaker is set
The first jam plate on the first interlock plate, the second interlock plate being rotatably arranged on main shaft, it is connected to the second interlock plate and mechanism
Linkage is arranged on the second jam plate on the second interlock plate, institute at the trip shaft of the conventional breaker of the second extension spring, correspondence between frame
The transition arm of the first interlock plate and one of which transmission component stated is linked, and the first described interlock plate is acted with transition arm
And the first jam plate can be promoted to act, the first jam plate contradicts in the trip shaft of back-up breaker and can be locked in back-up breaker
Gate-dividing state；The transition arm of described the second interlock plate and another group of transmission component is linked, described the second interlock plate with
Transition arm is acted and the second jam plate can be promoted to act, and the second jam plate is contradicted in the trip shaft of conventional breaker and will can commonly used disconnected
Road device is locked in gate-dividing state.By being provided with interlocking mechanism in mechanism rack, the interlocking mechanism can be prevented effectively from conventional open circuit
Device, back-up breaker close a floodgate simultaneously, substantially increase the security performance and reliability of the double power supply automatic transfer switch；When conventional
When breaker is in closing position, the transition arm of one of which transmission component is contradicted on the first interlock plate, and the first jam plate is with the
One interlock plate is acted and contradicted in the trip shaft of back-up breaker, and now back-up breaker is in trip status, standby open circuit
Device can not close a floodgate；When back-up breaker is in closing position, the transition arm of another group of transmission component is contradicted in the second interlock plate
On, the second jam plate is acted and contradicted in the trip shaft of conventional breaker with the second interlock plate, and now conventional breaker is in de-
Buckle-like state, conventional breaker can not close a floodgate.
Especially, square opening is provided with one end of the conventional breaker/back-up breaker of described transition arm direction, it is described
Square opening in be provided with square shaft, one end of square shaft is connected on conventional circuit breaker handle/back-up breaker handle.Conversion
Arm is connected with conventional circuit breaker handle, back-up breaker handle by square shaft, consequently facilitating transition arm and conventional breaker hand
The assembling of handle, back-up breaker handle.
Especially, the outer shape of described housing and the profile of conventional breaker, back-up breaker match, described
Housing is made up of the first lid and the second lid, and the bottom of housing is provided with and commonly used breaker, back-up breaker and matches
Guide rail mounting groove, described housing is connected by screw with conventional breaker, back-up breaker.The shell of the automatic transfer equipment
The profile of body and conventional breaker, the form fit of back-up breaker, consequently facilitating housing and conventional breaker, back-up breaker
Assembling, and the bottom of housing is provided with guide rail mounting groove, so that the double power supply automatic transfer switch can be arranged on guide rail, just
In user installation.
Brief description of the drawings
Fig. 1 is stereogram of the embodiment of the present invention.
Fig. 2 is the stereogram of automatic transfer equipment of the present invention.
Fig. 3 is that automatic transfer equipment of the present invention removes the stereogram after housing.
Fig. 4 is Fig. 3 decomposing schematic representation.
Fig. 5 is the stereogram of transmission component of the present invention.
Fig. 6 is the stereogram of interlocking mechanism of the present invention.
Embodiment
As shown in figs. 1 to 6, the embodiment of the present invention is a kind of miniature double power supply automatic transfer switch, including automatic conversion dress
The conventional breaker 40 for put 10, being connected with conventional power supply, the back-up breaker 50 being connected with stand-by power supply, described conventional open circuit
Device 40, back-up breaker 50 are separately positioned on the both sides of automatic converter device 10, and described automatic transfer equipment 10 includes housing
11st, the intelligent control wiring board 12 that is arranged in housing 11, the mechanism rack 13 being arranged in housing 11, it is arranged in housing 11
Motor 14, the bevel gear 15 being arranged on the output shaft of motor 14, be symmetrically distributed in the both sides of bevel gear 15 and with bevel gear 15
The dynamic two groups of transmission components 20 set, described transmission component 20 include linking with bevel gear 15 set travelling gear 21, with
It is rotatably arranged at cam 22 that the linkage of travelling gear 21 is set, correspondence cam 22 in mechanism rack 13 and for driving conventional open circuit
The transition arm 23 of the back-up breaker handle 51 of device handle 41/, described cam 22 rotates with travelling gear 21 and can drive conversion
Arm 23 is rotated, and place is movably set with separating brake part 24 between correspondence travelling gear 21 and cam 22 in described mechanism rack 13, and passes
Moving gear 21 freely coordinates on combined floodgate direction with separating brake part 24, is linked on separating brake direction, is set in described housing 11
The interlocking mechanism 30 being linked with described transition arm 23 is equipped with, the described controlled motor 14 of intelligent control wiring board 12 is just
Turn, invert, stopping is acted.As shown in Figures 4 and 5, described travelling gear 21 is convex towards transmission is provided with the side of cam 22
The projection 221 being engaged with drive lugs 21 is provided with block 211, described cam 22, described drive lugs 211 are with transmission
Gear 21 rotates and projection 221 can be promoted to act and being linked for travelling gear 21 and cam 22 is constituted.By in driving cog
It is provided with wheel after the drive lugs being engaged with cam, drive lugs driving cam to closing position, motor driving driving cog
Wheel revolution, drive lugs are turned back to original position, so that drive lugs are turned round without limitation on cam, transition arm can perform revolution action,
So as to not interfere with the manual brake separating of conventional breaker or back-up breaker.As shown in Figures 4 and 5, described separating brake part 24 is upper
Rotating shaft 24 is provided with portion, rotating shaft 241 is rotatably arranged in mechanism rack 13, one is passed through respectively on the both sides on the top of separating brake part 24
Reset tension spring 242 is connected in mechanism rack 13, and the lower end of separating brake part 24 is extended between drive lugs 211 and projection 221, described
Drive lugs 211 freely coordinate on combined floodgate direction with separating brake part 24, be linked on separating brake direction.By convex in transmission
Separating brake part is provided between block and projection, in separating brake, drive lugs are linked with separating brake part, when closing a floodgate, drive lugs
Freely coordinate with separating brake part, the double power supply automatic transfer switch is when switching two-way power supply, and driving cam can by separating brake part
Driving cam performs separating brake action in advance, so that the double power supply automatic transfer switch can realize first separating brake when changing two-way power supply
The purpose closed a floodgate afterwards, improves reliability, the security performance of double power supply automatic transfer switch work.
As shown in Figure 4,5, 6, described interlocking mechanism 30 include be arranged in housing 11 main shaft 31, be rotatably arranged on master
It is the first interlock plate 32 on axle 31, the first extension spring 33 being connected between the first interlock plate 32 and mechanism rack 13, corresponding standby disconnected
At the trip shaft of road device link be arranged on the first interlock plate 32 the first jam plate 34, be rotatably arranged on main shaft 31 second
Jam plate 35, the second extension spring 36 being connected between the second interlock plate 35 and mechanism rack 13, at the trip shaft of corresponding conventional breaker
Linkage is arranged on the second jam plate 37 on the second interlock plate 35, described the first interlock plate 32 and one of which transmission component 20
Transition arm 23 is linked, and the first described interlock plate 32 acts with transition arm 23 and the first jam plate 34 can be promoted to act, and first
Jam plate 34 contradicts in the trip shaft of back-up breaker 50 and back-up breaker 50 can be locked in into gate-dividing state；Described second
The transition arm 23 of interlock plate 35 and another group of transmission component 20 is linked, and the second described interlock plate 35 is acted with transition arm 23
And the second jam plate 37 can be promoted to act, the second jam plate 37 contradicts in the trip shaft of conventional breaker 40 and can be by conventional breaker
40 are locked in gate-dividing state.By being provided with interlocking mechanism in mechanism rack, the interlocking mechanism can be prevented effectively from conventional breaker,
Back-up breaker closes a floodgate simultaneously, substantially increases the security performance and reliability of the double power supply automatic transfer switch；When conventional disconnected
When road device is in closing position, the transition arm of one of which transmission component is contradicted on the first interlock plate, and the first jam plate is with first
Interlock plate is acted and contradicted in the trip shaft of back-up breaker, and now back-up breaker is in trip status, back-up breaker
It can not close a floodgate；When back-up breaker is in closing position, the transition arm of another group of transmission component is contradicted on the second interlock plate,
Second jam plate is acted and contradicted in the trip shaft of conventional breaker with the second interlock plate, is now commonly used breaker and is in dropout shape
State, conventional breaker can not close a floodgate.
As shown in Figures 3 and 4, described transition arm 23 is towards the side of being provided with one end of conventional breaker/back-up breaker
It is provided with square shaft 16 in shape hole, described square opening, it is standby disconnected that one end of square shaft 16 is connected to conventional circuit breaker handle 41/
On road device handle 51.Transition arm is connected with conventional circuit breaker handle, back-up breaker handle by square shaft, consequently facilitating conversion
Arm and conventional circuit breaker handle, the assembling of back-up breaker handle.As illustrated in fig. 1 and 2, the outer shape of described housing 11 with
Conventional breaker 40, the profile of back-up breaker 50 match, and described housing 11 is by the first lid 111 and the second lid 112
Constitute, and the bottom of housing 11 is provided with and commonly used breaker 40, the guide rail mounting groove 113 that back-up breaker 50 matches, institute
The housing 11 stated is connected by screw with conventional breaker 40, back-up breaker 50.The profile of the housing of the automatic transfer equipment
With conventional breaker, the form fit of back-up breaker, consequently facilitating housing and conventional breaker, the assembling of back-up breaker,
And the bottom of housing is provided with guide rail mounting groove, so that the double power supply automatic transfer switch can be arranged on guide rail, it is easy to user
Install.
The more compact simplification of the structure of the automatic transfer equipment of the double power supply automatic transfer switch, small volume is manufactured into
This is more cheap, can meet the automatic switchover of two-supply circuit in most cases.And set between travelling gear and cam
There is separating brake part, in separating brake, travelling gear is linked with separating brake part, when closing a floodgate, travelling gear freely coordinates with separating brake part,
The double power supply automatic transfer switch is when switching two-way power supply, and separating brake part can shift to an earlier date driving cam and perform separating brake action, so that should
Double power supply automatic transfer switch can realize the purpose closed a floodgate after first separating brake when changing two-way power supply；Connection is provided with mechanism rack
Latch mechanism, the interlocking mechanism can be prevented effectively from conventional breaker, back-up breaker and close a floodgate simultaneously.So as to the double power-supply automatic transferring
Switch has the advantages that compact conformation, high reliability, install convenient, small volume, safe and reliable.
Claims (6)
1. a kind of miniature double power supply automatic transfer switch, including automatic transfer equipment, be connected with conventional power supply conventional breaker,
The back-up breaker being connected with stand-by power supply, described conventional breaker, back-up breaker are separately positioned on automatic converter device
Both sides, it is characterised in that：Described automatic transfer equipment includes housing, the intelligent control wiring board being arranged in housing, set
Put the mechanism rack in housing, the motor being arranged in housing, the bevel gear being arranged on the output shaft of motor, be symmetrically distributed in
Bevel gear both sides and the two groups of transmission components set that linked with bevel gear, described transmission component, which includes linking with bevel gear, to be set
Travelling gear, the cam set that linked with travelling gear, be rotatably arranged in mechanism rack and normal for driving at corresponding cam
With the transition arm of circuit breaker handle/back-up breaker handle, described cam rotates with travelling gear and transition arm can be driven to turn
Dynamic, place is movably set with separating brake part, and travelling gear and separating brake part between correspondence travelling gear and cam in described mechanism rack
Freely coordinate on combined floodgate direction, be linked on separating brake direction, is provided with described housing and described transition arm connection
The dynamic interlocking mechanism coordinated, described intelligent control wiring board controlled motor is rotated forward, inverted, stopping action.
2. miniature double power supply automatic transfer switch according to claim 1, it is characterised in that：Described travelling gear direction
It is provided with the side of cam on drive lugs, described cam and is provided with the projection being engaged with drive lugs, described biography
Dynamic projection rotates with travelling gear and projection can be promoted to act and travelling gear is constituted and cam is linked.
3. miniature double power supply automatic transfer switch according to claim 1 or 2, it is characterised in that：Described separating brake part
Rotating shaft is provided with top, axis of rotation is arranged in mechanism rack, is resetted and drawn by one respectively on the both sides on separating brake part top
Spring is connected in mechanism rack, and the lower end of separating brake part is extended between drive lugs and projection, described drive lugs and separating brake part
Freely coordinate on combined floodgate direction, be linked on separating brake direction.
4. miniature double power supply automatic transfer switch according to claim 1, it is characterised in that：Described interlocking mechanism includes
The main shaft that is arranged in housing, the first interlock plate being rotatably arranged on main shaft, it is connected between the first interlock plate and mechanism rack
The first extension spring, at the trip shaft of correspondence back-up breaker linkage be arranged on the first jam plate on the first interlock plate, rotate and set
The second interlock plate on main shaft, the second extension spring being connected between the second interlock plate and mechanism rack, corresponding conventional breaker
Linkage is arranged on the second jam plate on the second interlock plate, described the first interlock plate and one of which transmission component at trip shaft
Transition arm is linked, and the first described interlock plate is acted with transition arm and the first jam plate can be promoted to act, and the first jam plate is contradicted
In the trip shaft of back-up breaker and back-up breaker can be locked in gate-dividing state；Described the second interlock plate with another group
The transition arm of transmission component is linked, and the second described interlock plate acts with transition arm and the second jam plate can be promoted to act, the
Two jam plates contradict in the trip shaft of conventional breaker and conventional lock for circuit breaker can be scheduled on into gate-dividing state.
5. miniature double power supply automatic transfer switch according to claim 1, it is characterised in that：Described transition arm is towards often
Square shaft is provided with being provided with one end of breaker/back-up breaker in square opening, described square opening, the one of square shaft
End is connected on conventional circuit breaker handle/back-up breaker handle.
6. miniature double power supply automatic transfer switch according to claim 1, it is characterised in that：The outside shape of described housing
The profile of shape and conventional breaker, back-up breaker matches, and described housing is made up of the first lid and the second lid, and shell
The guide rail mounting groove that the bottom of body was provided with and commonly used breaker, back-up breaker matches, described housing by screw with
Conventional breaker, back-up breaker connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418096.7A CN107068452B (en) | 2017-06-06 | 2017-06-06 | Miniature double power supply automatic transfer switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710418096.7A CN107068452B (en) | 2017-06-06 | 2017-06-06 | Miniature double power supply automatic transfer switch |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107068452A true CN107068452A (en) | 2017-08-18 |
| CN107068452B CN107068452B (en) | 2019-05-07 |
Family
ID=59615961
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710418096.7A Active CN107068452B (en) | 2017-06-06 | 2017-06-06 | Miniature double power supply automatic transfer switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107068452B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359092A (en) * | 2017-09-04 | 2017-11-17 | 环宇集团浙江高科股份有限公司 | The electronic close/open machine of breaker |
| CN107629921A (en) * | 2017-11-13 | 2018-01-26 | 重庆市嘉利酒业有限公司 | Brewing fermentation equipment |
| CN107629920A (en) * | 2017-11-13 | 2018-01-26 | 重庆市嘉利酒业有限公司 | Brewing system |
| CN107946101A (en) * | 2017-11-17 | 2018-04-20 | 重庆奇甫机械有限责任公司 | Auto parts machinery drying machine |
| CN109667490A (en) * | 2018-12-26 | 2019-04-23 | 山东爱普电气设备有限公司 | A kind of programed interlocking device and switchgear |
| CN110254272A (en) * | 2019-06-25 | 2019-09-20 | 南安市明誓汽配贸易有限公司 | A kind of high-low pressure suitching type electric automobile charging pile |
| CN111681892A (en) * | 2020-06-08 | 2020-09-18 | 罗格朗低压电器（无锡）有限公司 | Automatic change-over switch electric appliance |
| CN112038189A (en) * | 2020-08-19 | 2020-12-04 | 苏州飞腾电器有限公司 | Three-power-supply automatic change-over switch |
| CN109667490B (en) * | 2018-12-26 | 2024-04-09 | 山东爱普电气设备有限公司 | Program interlocking device and switch cabinet |
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| CN107629920A (en) * | 2017-11-13 | 2018-01-26 | 重庆市嘉利酒业有限公司 | Brewing system |
| CN107946101A (en) * | 2017-11-17 | 2018-04-20 | 重庆奇甫机械有限责任公司 | Auto parts machinery drying machine |
| CN109667490A (en) * | 2018-12-26 | 2019-04-23 | 山东爱普电气设备有限公司 | A kind of programed interlocking device and switchgear |
| CN109667490B (en) * | 2018-12-26 | 2024-04-09 | 山东爱普电气设备有限公司 | Program interlocking device and switch cabinet |
| CN110254272A (en) * | 2019-06-25 | 2019-09-20 | 南安市明誓汽配贸易有限公司 | A kind of high-low pressure suitching type electric automobile charging pile |
| CN110254272B (en) * | 2019-06-25 | 2020-10-23 | 惠安县崇武镇锐锐海鲜干品店 | High-low voltage switching type electric automobile charging pile |
| CN111681892A (en) * | 2020-06-08 | 2020-09-18 | 罗格朗低压电器（无锡）有限公司 | Automatic change-over switch electric appliance |
| CN111681892B (en) * | 2020-06-08 | 2022-05-24 | 罗格朗低压电器（无锡）有限公司 | Automatic change-over switch electric appliance |
| CN112038189A (en) * | 2020-08-19 | 2020-12-04 | 苏州飞腾电器有限公司 | Three-power-supply automatic change-over switch |
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| CN107068452B (en) | 2019-05-07 |
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Address after: 325600 Wenzhou Daqiao Industrial Park, Yueqing City, Wenzhou City, Zhejiang Province Patentee after: Huanyu Hi Tech Co.,Ltd. Address before: 325603 Wenzhou Daqiao Industrial Park, Yueqing City, Wenzhou City, Zhejiang Province Patentee before: HUANYU GROUP ZHEJIANG HIGH-TECH Co.,Ltd. |
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