CN108978529A - Energy-efficient parking stall lock-up cock device and method - Google Patents
Energy-efficient parking stall lock-up cock device and method Download PDFInfo
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- CN108978529A CN108978529A CN201810817845.8A CN201810817845A CN108978529A CN 108978529 A CN108978529 A CN 108978529A CN 201810817845 A CN201810817845 A CN 201810817845A CN 108978529 A CN108978529 A CN 108978529A
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- motor
- clutch
- main motor
- auxiliary motor
- inner ring
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- 238000000034 method Methods 0.000 title claims abstract description 15
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000000694 effects Effects 0.000 claims description 9
- 230000007246 mechanism Effects 0.000 claims description 9
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 5
- 230000005611 electricity Effects 0.000 description 4
- 230000033001 locomotion Effects 0.000 description 3
- 230000005484 gravity Effects 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01F—ADDITIONAL WORK, SUCH AS EQUIPPING ROADS OR THE CONSTRUCTION OF PLATFORMS, HELICOPTER LANDING STAGES, SIGNS, SNOW FENCES, OR THE LIKE
- E01F13/00—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions
- E01F13/04—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage
- E01F13/08—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage by swinging into closed position about a transverse axis situated in the road surface, e.g. tiltable sections of the road surface, tiltable parking posts
- E01F13/085—Arrangements for obstructing or restricting traffic, e.g. gates, barricades ; Preventing passage of vehicles of selected category or dimensions movable to allow or prevent passage by swinging into closed position about a transverse axis situated in the road surface, e.g. tiltable sections of the road surface, tiltable parking posts specially adapted for individual parking spaces
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
- E04H6/00—Buildings for parking cars, rolling-stock, aircraft, vessels or like vehicles, e.g. garages
- E04H6/42—Devices or arrangements peculiar to garages, not covered elsewhere, e.g. securing devices, safety devices, monitoring and operating schemes; centering devices
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
Abstract
The invention discloses energy-efficient parking stall lock-up cock device and method, which includes two struts, bar, clutch, main motor, auxiliary motor, control unit and the power supply unit for connecting two strut tops；The bottom end of two struts is separately connected a shaft；Clutch is made of inner ring, outer ring and night bolt, and outer ring one end sets drive rod, and one end opposite with drive rod of inner ring is equipped with connecting interface；One through hole penetrates through the side wall of inner ring and outer rings along the radial direction of inner ring and outer rings, and night bolt is disposed through in hole；The output axis connection connecting interface of main motor, drive rod connect the shaft of a strut bottom end；The output shaft connecting spring bolt of auxiliary motor；Control unit connects main motor and auxiliary motor.In the prior art, the lock and unlock of berth lock needs main motor to do 2 function, and main motor only needs to do 1 function when berth lock is locked in the present invention, and the unlock of berth lock is completed by the gravitional force of strut and bar, reduces the power consumption of main motor.
Description
Technical field
The present invention relates to parking stall lock technology, in particular to a kind of energy-efficient parking stall lock-up cock device and method.
Background technique
Parking stall lock-up cock device is mounted in a kind of lockset on parking stall, is all utilized on parking stall and bar is arranged
Or the barriers such as baffle, with prevent other vehicles stop into.Currently, parking stall lock-up cock device on the market, typically passes through electricity
Machine drives bar, when motor driven bar is put down, be now in unlocking condition；When motor driven bar lifts, it is now in
Lock status.During locking, bar is rotated up once, then motor need to overcome bar gravity to do a function；In unlocking process
In, bar rotates down once, then motor need to draw bar gravity and try again function.Since parking stall lock-up cock device uses mostly
Battery power supply, after bar lifts, has been provided with gravitional force, is put down again using motor traction bar at this time, then wastes this
Gravitional force is unfavorable for energy conservation.
Summary of the invention
The gravitional force when present invention is lifted using bar provides a kind of energy-efficient parking stall lock-up cock device and side
Method.
The energy-efficient parking stall lock-up cock device of the present invention, including two struts, the bar for connecting two strut tops, clutch
Device, main motor, auxiliary motor, control unit and power supply unit；
The bottom end of two strut is separately connected a shaft for being fixed on ground；
Said supply unit is used to provide electric energy to main motor, auxiliary motor, control unit；
The clutch is made of an inner ring, an outer ring and a night bolt, and outer ring one end sets drive rod, and inner ring is another from outer ring
One end is set in outer ring, and one end opposite with drive rod of inner ring is equipped with connecting interface；Diameter of one through hole along inner ring and outer rings
To the side wall of perforation inner ring and outer rings, night bolt is disposed through in hole；
When night bolt is fully inserted into through hole, inner ring and outer rings are cannoted rotate relative to each other, clutch locking；Work as night bolt
When extracting from the interior ring segment of through hole, inner ring and outer rings can be relatively rotated, clutch unlock；
Connecting interface in the output axis connection inner ring of main motor, the drive rod set on outer ring one end connect turning for a strut bottom end
Axis；The output shaft connecting spring bolt outer end of auxiliary motor, for controlling night bolt along through hole into or out；
Control unit connects main motor and auxiliary motor, is used to send instruction to main motor and auxiliary motor.
Further, main motor is stepper motor.
Further, auxiliary motor is linear motor.
Further, auxiliary motor passes through the outer end of a transmission mechanism connecting spring bolt, and the transmission mechanism includes cam
And follower lever, cam are socketed on the output shaft of auxiliary motor, cam side opens up through-hole, and through-hole internal activity connects follower lever,
The hinged night bolt outer end of driven 9 other end.
Further, clutch, main motor, auxiliary motor, control unit and said supply unit are placed in a base member case, from
The drive rod of clutch is stretched out from pedestal box part, is connect with shaft.
Berth lock method of switching provided by the invention using above-mentioned parking stall lock-up cock device, comprising:
(1) when control unit, which receives, lifts instruction, control unit lifts instruction, auxiliary motor to main motor and auxiliary motor transmission
Driving spring bolt is fully inserted into through hole, clutch locking；Main motor drives clutch rotation, drives strut by shaft
It lifts, completes the locking of berth lock；
(2) when control unit, which receives, puts down instruction, control unit puts down instruction, auxiliary motor driving spring to auxiliary motor transmission
Bolt is extracted from the interior ring segment of through hole, and clutch unlock, strut and bar are fallen under self gravitation effect, completes berth lock
Unlock.
Preferably, it is 60 degree ~ 85 degree that main motor driving strut, which lifts angle, during the locking of berth lock.
It is instructed preferably, being sent using intelligent terminal or remote sensor to control unit.
A kind of application method of parking stall lock-up cock device of the present invention is as follows:
When needing to lift bar, by instruction sending device, such as intelligent terminal, remote controler etc., sends and lift to control unit
Instruction is played, control unit sends instruction to main motor and auxiliary motor again, and auxiliary motor driving spring bolt is fully inserted into through hole,
Clutch is locked up, and inner ring and outer rings cannot rotate relative to each other.At this point, main motor output shaft rotates, clutch, clutch band are driven
The rotation of turn axis, shaft drive strut and bar to lift, complete the locking of berth lock.
When needing to put down bar, instruction is put down to control unit transmission by instruction sending device, receives the control of instruction
Unit processed sends to auxiliary motor and instructs, and auxiliary motor driving spring bolt is extracted from through bore portion, so that clutch is unlocked, it is interior
Ring and outer ring can relatively rotate.At this point, strut and bar exist since strut is no longer influenced by the support force of main motor output shaft offer
It is fallen under self gravitation effect, completes the unlock of berth lock.
Compared to the prior art, the invention has the advantages that and the utility model has the advantages that
In the prior art, the lock and unlock of berth lock needs main motor to do 2 function, and parking stall lock-switch of the present invention is used to fill
It sets, main motor only needs to do 1 function when berth lock is locked, and the unlock of berth lock is completed by the gravitional force of strut and bar,
Reduce the power consumption of main motor.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of parking stall lock-up cock device of the present invention；
Fig. 2 is the side view of clutch main body in the present invention；
Fig. 3 is the front view of clutch main body in the present invention；
Fig. 4 is the sectional side view of clutch main body in the present invention；
Fig. 5 is the stereoscopic schematic diagram of clutch main body in the present invention；
Fig. 6 is the Local map that clutch is connected with auxiliary motor in specific embodiment；
Fig. 7 is the structural schematic diagram of parking stall lock-up cock device in specific embodiment.
In figure, 1- strut, 2- shaft, 201- rotary shaft rack, 3- bar, 4- clutch, 401- inner ring, 402- outer ring,
403- through hole, the outer ring segment through hole of 403a-, ring segment through hole in 403b-, 404- drive rod, 405- connecting interface, 406- bullet
Spring bolt, 5- main motor, 501- main motor output shaft, 6- auxiliary motor, 601- auxiliary motor output shaft, 7- cam, 8- through-hole, 9- from
Lever.
Specific embodiment
In order to illustrate more clearly of the present invention and/or technical solution in the prior art, Detailed description of the invention sheet will be compareed below
The specific embodiment of invention.It should be evident that drawings in the following description are only some embodiments of the invention, for this
For the those of ordinary skill of field, without creative efforts, it can also be obtained according to these attached drawings others
Attached drawing, and obtain other embodiments.
A specific embodiment of the invention is further illustrated below in conjunction with attached drawing.
Referring to Fig. 1, parking stall lock-up cock device of the present invention includes two struts 1, the bar 3 for connecting two struts, 1 top, a clutch
Device 4, a main motor 5, an auxiliary motor 6, a control unit (not drawn in the figure) and a power supply unit (not drawn in the figure).
The bottom end of two struts 1 is separately connected a shaft 2, and shaft 2 is fixed on parking stall ground, and power supply unit is used to main motor 5, auxiliary electricity
Machine 6, control unit provide electric energy.
Referring to fig. 2 ~ 5, it is shown the main body schematic diagram of the used clutch of the present invention, clutch is by main body and night bolt
It constitutes.Clutch main body is matched by size and a relatively turnable inner ring 401 and an outer ring 402 are constituted, and 402 one end of outer ring is set
Drive rod 404,401 outer end of inner ring (i.e. one end opposite with drive rod 404) are equipped with connecting interface 405；One through hole 403 is along interior
The side wall of radial the perforation inner ring 401 and outer ring 402 of ring 401 and outer ring 402, a night bolt 406 are disposed through in hole 403.
It is two sections that through hole 403, which is divided to: outer ring segment through hole 403a and interior ring segment through hole 403b.It is passed through when night bolt 406 is fully inserted into
When in through-hole 403, inner ring 401 and outer ring 402 are cannoted rotate relative to each other, 4 locking of clutch；When night bolt 406 is passed through from interior ring segment
When extracting in through-hole 403, inner ring 401 and outer ring 402 can be relatively rotated, and clutch 4 unlocks.
It is shown parking stall lock-up cock device more specifically structural schematic diagram referring to Fig. 1 and Fig. 7, Fig. 7, master is shown
The specific connection type of motor 5, auxiliary motor 6 and clutch 4 and clutch 4 and shaft 2.The main motor output shaft of main motor 5
Connecting interface 405 in 501 connection inner ring 401, the shaft of 1 bottom end of a strut is connected set on the drive rod 404 of 402 one end of outer ring
2.When inner ring 401 and outer ring 402 are locked up, the rotation of main motor output shaft 501 can drive clutch 4 to rotate, and 4 turns of clutch
It is dynamic that shaft 2 is driven to rotate, so that strut 1 be driven to lift.In present embodiment, the shaft 2 for being fixed on 1 bottom end of strut passes through
One rotary shaft rack 201 is fixed on ground, and drive rod 404 is connected through a screw thread with shaft 2, and main motor 5 uses stepper motor.Auxiliary electricity
The 601 connecting spring bolt 406 of auxiliary motor output shaft of machine 6, for controlling night bolt 406 along through hole 403 into or out.It is described
Control unit connects main motor 5 and auxiliary motor 6, is used to send instruction to main motor 5 and auxiliary motor 6.
It is moved in a straight line for driving spring bolt 406, auxiliary motor output shaft 601 can be inserted by a transmission mechanism connecting spring
The outer end of pin 406, the transmission mechanism are the driver that the rotational motion of auxiliary motor output shaft 601 can be transformed to linear motion
Structure, for example, cam structure, link mechanism.Alternatively, directlying adopt linear motor as auxiliary motor 6, by the output shaft of linear motor
Connecting spring bolt 406.
Fig. 6 show clutch and auxiliary motor specifically connects Local map, and a kind of specific transmission mechanism is shown.
The transmission mechanism includes cam 7 and follower lever 9, and cam 7 is socketed on auxiliary motor output shaft 601, and 7 side of cam opens up through-hole
8,8 internal activity of through-hole connects follower lever 9, the hinged night bolt 406 of the other end of follower lever 9.It is auxiliary when auxiliary motor 6 is opened
Motor output shaft 601 rotates, and band moving cam 7 rotates, and cam 7 drives the follower lever 9 in through-hole 8 to rotate again, and 9 band of follower lever is moved
Spring bolt 406 is in 403 linear movement of through hole.
When concrete application, parking stall lock-up cock device is arranged in parking stall region, strut 1 and bar 3 are arranged on ground.
It, can be single by clutch 4, main motor 5, auxiliary motor 6, control unit, power supply to avoid clutch 4, main motor 5, auxiliary motor 6 from damaging
Member is placed in a base member case, but the drive rod 404 of clutch 4 should be stretched out from pedestal box part, convenient for connecting with shaft 2.Pedestal
Case can be set on ground or subsurface, and the specific arrangement method of base member case is not to influence vehicle driving as principle.
In present embodiment, main motor 5 uses FD550 model motor, and auxiliary motor 6 uses FD555 model motor, control
Unit processed uses MSP430F5438A model single-chip microcontroller.
The working principle of parking stall lock-up cock device of the present invention are as follows:
When 6 driving spring bolt 406 of auxiliary motor is fully inserted into through hole 403,4 locking of clutch, main motor 5 passes through clutch
4 and shaft 2 drive strut 1 and bar 3 to lift, realize the locking of berth lock.When 6 driving spring bolt 406 of auxiliary motor is from inner ring
It is extracted in section through hole 403b, clutch 4 unlocks, and strut 1 is no longer influenced by the support force of the offer of main motor output shaft 501, strut 1
It is fallen under self gravitation effect with bar 3, realizes the unlock of berth lock.To avoid strut 1 and bar 3 from acting in gravitional force
Under damage when falling, yielding rubber can be set in parking stall ground corresponding region.
A kind of berth lock method of switching using parking stall lock-up cock device of the present invention is provided below, may be based on this certainly
Device designs other berth lock method of switching:
(1) when control unit receives when lifting instruction of sending device of instruction, control unit is sent out to main motor 5 and auxiliary motor 6
It send and lifts instruction, 6 driving spring bolt 406 of auxiliary motor is fully inserted into through hole 403,4 locking of clutch, inner ring 401 and outer
Ring 402 cannots rotate relative to each other；5 main motors drive clutch 4 to rotate, and drive strut 1 to lift by shaft 2, complete berth lock
Locking.
During completing the locking of berth lock, a kind of preferred embodiment are as follows:
It is 60 degree ~ 85 degree that main motor 5, which drives strut 1 to lift angle, here, lifts the angle that angle refers to strut 1 Yu ground.Work as lift
Rise angle be 60 degree ~ 85 degree when, can preferably play the effect of gravitional force.More specifically, main motor 1 is using stepping electricity
Machine, can be by adjusting the number of pulses and frequency of main motor 1, to control the rotation angle of main motor output shaft 501, rotation angle
The i.e. strut 1 of degree lifts angle.
(2) when control unit receives when putting down instruction of sending device of instruction, control unit is put down to the transmission of auxiliary motor 6
Instruction, 6 driving spring bolt 406 of auxiliary motor are extracted from interior ring segment through hole 403b, and clutch 4 unlocks, inner ring 401 and outer ring
402 can relatively rotate；At this point, since strut 1 is no longer influenced by the support force of the offer of main motor output shaft 501, strut 1 and bar 3
It is fallen under self gravitation effect, completes the unlock of berth lock.
In the present invention, the stroke distances of night bolt 406 into or out equally can by adjusting auxiliary motor 6 number of pulses and
Frequency is realized.I.e. by adjusting the number of pulses and frequency of auxiliary motor 6, to control the rotation angle of auxiliary motor output shaft 601,
To the formation distance of control and the hinged night bolt 406 in 9 end of follower lever.
In the present invention, instruction sending device can be intelligent terminal or remote sensor.
Be described in above-described embodiment to illustrate the present invention, though text in be illustrated by specific term, not
Can be limited the scope of protection of the present invention with this, be familiar with this technical field personage can understand spirit of the invention with it is right after principle
It changes or modifies and reaches equivalent purpose, and this equivalent change and modification, should all be covered by scope of the claims institute circle
Determine in scope.
Claims (8)
1. energy-efficient parking stall lock-up cock device, it is characterized in that:
Bar, clutch, main motor, auxiliary motor, control unit and power supply unit including two struts, two strut tops of connection；
The bottom end of two strut is separately connected a shaft for being fixed on ground；
Said supply unit is used to provide electric energy to main motor, auxiliary motor, control unit；
The clutch is made of an inner ring, an outer ring and a night bolt, and outer ring one end sets drive rod, and inner ring is another from outer ring
One end is set in outer ring, and one end opposite with drive rod of inner ring is equipped with connecting interface；Diameter of one through hole along inner ring and outer rings
To the side wall of perforation inner ring and outer rings, night bolt is disposed through in hole；
When night bolt is fully inserted into through hole, inner ring and outer rings are cannoted rotate relative to each other, clutch locking；Work as night bolt
When extracting from the interior ring segment of through hole, inner ring and outer rings can be relatively rotated, clutch unlock；
Connecting interface in the output axis connection inner ring of main motor, the drive rod set on outer ring one end connect turning for a strut bottom end
Axis；The output shaft connecting spring bolt outer end of auxiliary motor, for controlling night bolt along through hole into or out；
Control unit connects main motor and auxiliary motor, is used to send instruction to main motor and auxiliary motor.
2. energy-efficient parking stall lock-up cock device as described in claim 1, it is characterized in that:
The main motor is stepper motor.
3. energy-efficient parking stall lock-up cock device as described in claim 1, it is characterized in that:
The auxiliary motor is linear motor.
4. energy-efficient parking stall lock-up cock device as described in claim 1, it is characterized in that:
For the auxiliary motor by the outer end of a transmission mechanism connecting spring bolt, the transmission mechanism includes cam and follower lever,
Cam is socketed on the output shaft of auxiliary motor, and cam side opens up through-hole, and through-hole internal activity connects follower lever, driven 9 it is another
The hinged night bolt outer end in one end.
5. energy-efficient parking stall lock-up cock device as described in claim 1, it is characterized in that:
The clutch, the main motor, the auxiliary motor, described control unit and said supply unit are placed in a base member case
Interior, the drive rod of clutch is stretched out from pedestal box part, is connect with shaft.
6. utilizing the berth lock method of switching of parking stall lock-up cock device described in claim 1, characterized in that include:
(1) when control unit, which receives, lifts instruction, control unit lifts instruction, auxiliary motor to main motor and auxiliary motor transmission
Driving spring bolt is fully inserted into through hole, clutch locking；Main motor drives clutch rotation, drives strut by shaft
It lifts, completes the locking of berth lock；
(2) when control unit, which receives, puts down instruction, control unit puts down instruction, auxiliary motor driving spring to auxiliary motor transmission
Bolt is extracted from the interior ring segment of through hole, and clutch unlock, strut and bar are fallen under self gravitation effect, completes berth lock
Unlock.
7. berth lock method of switching as claimed in claim 6, it is characterized in that:
During the locking of berth lock, it is 60 degree ~ 85 degree that main motor driving strut, which lifts angle,.
8. berth lock method of switching as claimed in claim 6, it is characterized in that:
It is sent and is instructed to control unit using intelligent terminal or remote sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817845.8A CN108978529A (en) | 2018-07-24 | 2018-07-24 | Energy-efficient parking stall lock-up cock device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810817845.8A CN108978529A (en) | 2018-07-24 | 2018-07-24 | Energy-efficient parking stall lock-up cock device and method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108978529A true CN108978529A (en) | 2018-12-11 |
Family
ID=64548977
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810817845.8A Pending CN108978529A (en) | 2018-07-24 | 2018-07-24 | Energy-efficient parking stall lock-up cock device and method |
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| Country | Link |
|---|---|
| CN (1) | CN108978529A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201209332Y (en) * | 2008-05-21 | 2009-03-18 | 张延� | Electronic remote control lock for vehicle parking position |
| CN203160849U (en) * | 2013-02-18 | 2013-08-28 | 安徽江淮汽车股份有限公司 | Overrun clutch |
| WO2014063563A1 (en) * | 2012-10-23 | 2014-05-01 | Feng Lin | Parking space electric lock |
| US20150005986A1 (en) * | 2012-01-06 | 2015-01-01 | Suwat Petcharapirat | Vehicle security locking system having a driving function locking device |
| CN105113828A (en) * | 2015-09-08 | 2015-12-02 | 宁波市智宏交通设施科技有限公司 | Pull-lever impact-resistant remote-control parking lock |
| CN209816718U (en) * | 2018-07-24 | 2019-12-20 | 武汉君梦科技有限公司 | High-efficiency energy-saving parking spot lock switch device |
-
2018
- 2018-07-24 CN CN201810817845.8A patent/CN108978529A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201209332Y (en) * | 2008-05-21 | 2009-03-18 | 张延� | Electronic remote control lock for vehicle parking position |
| US20150005986A1 (en) * | 2012-01-06 | 2015-01-01 | Suwat Petcharapirat | Vehicle security locking system having a driving function locking device |
| WO2014063563A1 (en) * | 2012-10-23 | 2014-05-01 | Feng Lin | Parking space electric lock |
| CN203160849U (en) * | 2013-02-18 | 2013-08-28 | 安徽江淮汽车股份有限公司 | Overrun clutch |
| CN105113828A (en) * | 2015-09-08 | 2015-12-02 | 宁波市智宏交通设施科技有限公司 | Pull-lever impact-resistant remote-control parking lock |
| CN209816718U (en) * | 2018-07-24 | 2019-12-20 | 武汉君梦科技有限公司 | High-efficiency energy-saving parking spot lock switch device |
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