CN105605124B - A kind of limiter clutch - Google Patents

A kind of limiter clutch Download PDF

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Publication number
CN105605124B
CN105605124B CN201610154270.7A CN201610154270A CN105605124B CN 105605124 B CN105605124 B CN 105605124B CN 201610154270 A CN201610154270 A CN 201610154270A CN 105605124 B CN105605124 B CN 105605124B
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CN
China
Prior art keywords
wheel
power
power output
hole
power input
Prior art date
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Active
Application number
CN201610154270.7A
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Chinese (zh)
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CN105605124A (en
Inventor
乌江
赵彦军
魏京超
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
QINGDAO OBOYA AUTO PARTS CO Ltd
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QINGDAO OBOYA AUTO PARTS CO Ltd
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Priority to CN201610154270.7A priority Critical patent/CN105605124B/en
Publication of CN105605124A publication Critical patent/CN105605124A/en
Application granted granted Critical
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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16DCOUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
    • F16D43/00Automatic clutches
    • F16D43/02Automatic clutches actuated entirely mechanically
    • F16D43/20Automatic clutches actuated entirely mechanically controlled by torque, e.g. overload-release clutches, slip-clutches with means by which torque varies the clutching pressure
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60RVEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
    • B60R3/00Arrangements of steps or ladders facilitating access to or on the vehicle, e.g. running-boards
    • B60R3/02Retractable steps or ladders, e.g. movable under shock

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Arrangement And Mounting Of Devices That Control Transmission Of Motive Force (AREA)
  • One-Way And Automatic Clutches, And Combinations Of Different Clutches (AREA)

Abstract

The present invention relates to a kind of limiter clutch and use the electric step plate of the clutch, including power input wheel, the power output wheel that can be rotated coaxially is connect with the power input wheel, the power input wheel and the power output wheel are respectively arranged with the corresponding multiple grooves in position and through-hole, the size of the through-hole can accommodate clamp device and pass through, the top of the clamp device is provided with the spring extended downwardly, the other end of the spring is connected with steel ball, the size of the steel ball is matched with the size of the groove, the clutch further includes the sprocket wheel rotated coaxially connecting with the power output wheel.Solve damage of the silt to transmission system, should not any tool can manual return the technical issues of.

Description

A kind of limiter clutch
Technical field
The present invention relates to a kind of limiter clutch, in particular to a kind of electronic flat-pushing pedal clutch on passenger stock Device.
Background technique
Pedal is mostly installed at immediately below the door for coach up and down of the higher passenger stock in chassis, between ground and chassis Increase level-one pedal step, convenient for passenger safety gets on or off the bus.Pedal has mechanical pedal and electric treadle, and the flexible of pedal moves Mainly by electric or pneumatic, pedal can be easy to encounter the leg of passenger or other barriers power when protruding, existing In technology, if pedal encounters obstacle during stretching, it can not be automatically stopped movement, but need to carry out people by driver Industry control system can thus cause the damage of the person or pedal because controlling not in time, in addition, in the prior art, the contracting of pedal It returns and is also required to through electric or pneumatic completion, structure and process complexity and the consumption energy.In addition, current pedal mostly uses Gear cooperates the driving method of push-pull rod, and in the use environments such as silt, immersion, gear, push-pull rod are all easy to damage, and uses Service life is short.
Summary of the invention
To solve the above-mentioned problems, the object of the present invention is to provide it is a kind of can encounter obstacle when automatic limiter, obstacle release Shi Zidong resumes operation, should not any tool can direct manual return limiter clutch and electronic flat-pushing pedal, and energy Solve the problems, such as damage of the adverse circumstances to transmission system, specific technical solution is as follows:
A kind of limiter clutch of embodiment of the present invention one, including power input wheel, connecting with the power input wheel can The power output wheel rotated coaxially, it is corresponding with position is respectively arranged on the power output wheel on the power input wheel Multipair groove and through-hole are sequentially arranged with steel ball, holddown spring, fastening bolt in the through-hole, and steel ball passes through bullet by fastening bolt Spring pressing is protruding along through-hole, and the size of the steel ball is matched with the size of the groove, and the steel ball is outwardly directed It is partially submerged into the groove, both power input wheel and power output wheel limiter is caused to be engaged.
As the further improvement of embodiment of the present invention one, the power output wheel is equipped with axis hole, and the through-hole is by institute The side cambered surface for stating power output wheel is penetrated through to the center of circle direction of wheel to the axis hole, and the power input wheel is equipped with transmission shaft, institute The axis hole of transmission shaft insertion power output wheel is stated, is provided in the side cambered surface of the transmission shaft corresponding with lead to the hole site and quantity Groove.
As the further improvement of embodiment of the present invention one, the power output wheel is equipped with axis hole, the through-hole It is penetrated through towards the center of circle direction of wheel to axis hole by the lateral arcs of the power output wheel, the power output wheel is equipped with transmission Axis, the axis hole of the transmission shaft insertion power input wheel, the side cambered surface of the transmission shaft are equipped with and number of openings and position All corresponding groove.
As the further improvement of embodiment of the present invention one, the power input wheel and power output wheel are coaxially close to And opposite can slide, the through-hole is arranged on the wheel bottom surface of power input wheel and along axially through the groove is corresponding Power output wheel is arranged in be adjacent on the bottom surface of the power input wheel.
As the further improvement of embodiment of the present invention one, the power input wheel and power output wheel are coaxially close to And opposite can slide, the through-hole is arranged on the wheel bottom surface of power output wheel and along axially through the groove is corresponding Power input wheel is arranged in be adjacent on the bottom surface of the power output wheel.
As the further improvement of embodiment of the present invention one, sprocket is additionally provided on the power output wheel.The chain Wheel can be set in the outer rim of power output wheel, can also be separately set in except the power output wheel and with the power Output wheel, which is fixedly connected, to be rotated coaxially.
As the further improvement of embodiment of the present invention one, the through-hole is 6, and the groove is also 6, around described The side of power input wheel or power output wheel is uniformly distributed, and the groove is 6, and the side around transmission shaft is uniformly distributed.
As the electronic flat-pushing pedal of two limiter of embodiment of the present invention, including power device, pedal, shell, transmission device, The multiple power of leading pulleys on shell and on pedal are set to, the transmission device is connected by leading power pulley with pedal, described to step on Plate depends on the shell telescopic slide, is also equipped on the shell and is connected for outputing power device with transmission device Limiter clutch.
As the further improvement of embodiment of the present invention two, wirerope is also respectively connected in the both ends of the chain, by The wirerope of the both ends connection of the chain, wirerope are connected by pulley with pedal, and the chain is by the limiter clutch Wirerope is driven and drives, by the rope traction pedal telescopic slide.
Beneficial effects of the present invention:
Limiter clutch of the present invention, can when encountering obstacle volitional check power output wheel force production, to allow When encountering the obstacle for stopping pedal travel in stretching out stroke using the pedal of the limiter clutch, the power of limiter clutch is defeated Opposite sliding can be occurred because torsion increases between wheel and power output wheel by entering, and power can not just be transmitted from power input wheel at this time Onto power output wheel, then pedal can skid in situ because of running out of steam and stop stretching out, so as to avoid to human leg The injury in portion and injury to pedal, after the obstacle for stopping pedal to stretch out is eliminated, the power output wheel of clutch can be automatic extensive The input of multiple power from power wheel for inputting, and continue that pedal is driven to complete extending action.And when needing to carry out return to pedal, Without any electric power of application or pneumatic power, it is only necessary to firmly push away pedal inward, pedal just will drive power output wheel Rotate simultaneously return.
Further, since the use of pedal often uses in water, in silt, bad environments, transmission gear or chain Item etc. can be corroded, can be led by card, to influence normal use, and use the skill of chain connecting steel wire ropes driving pedal Art scheme drives pedal travel by wirerope, and the movement of the connection structure and wirerope itself of wirerope and pedal will not be because Silt, sewage and be affected, the service life of transmission mechanism greatly prolongs, and the operation stability of pedal greatly improves.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of flat-pushing pedal of the invention;
Fig. 2 is the structural schematic diagram of clutch of the invention;
In figure:
1, pedal, 2, chain, 3, clutch, 4, ECU circuit, 5, bottom plate, 6, wirerope, 7, shell, 8, first pulley, 9, Second pulley, 10, third pulley, the 11, the 4th pulley, the 12, the 5th pulley, the 13, the 6th pulley, 14, sprocket wheel, 15, spring, 16, Steel ball, 17, adjustment bolt, 18, power output wheel, 19, power input wheel, 20, transmission shaft, 21, groove, 22, through-hole.
Specific embodiment
Below with reference to specific embodiment shown in the drawings, the present invention will be described in detail.But these embodiments are simultaneously The present invention is not limited, structure that those skilled in the art are made according to these embodiments, method or functionally Transformation is included within the scope of protection of the present invention.
In each diagram of the application, for the ease of illustration, structure or partial certain sizes can be relative to other knots Structure or part are exaggerated, and therefore, are only used for the basic structure of the theme of diagram the application.
In addition, the term of the representation space relative position used herein such as "upper", " top ", "lower", " lower section " is A unit as shown in the drawings or feature are described for the purpose convenient for explanation relative to another unit or feature Relationship.The term of relative space position can be intended to include equipment in use or work other than orientation as shown in the figure not Same orientation.For example, being described as being located at other units or feature " below " or " under " if the equipment in figure overturn Unit will be located at other units or feature " top ".Therefore, exemplary term " lower section " can include above and below both Orientation.Equipment can be otherwise directed(It is rotated by 90 ° or other directions), and be interpreted accordingly it is used herein with it is empty Between relevant description language.
Technical solution provided by the present invention have it is compact-sized, limiter square and torque it is adjustable with it is integrated.Aim at flat-pushing step on Plate design, when normal operation, a buffer function is played in clutch, will not separate.When pedal system failure akinesia, It can be manually pulled out and push back, not delay vehicle normal operation.
Embodiment 1
The clutch part technical solution of the present embodiment is as shown in Fig. 2, dynamic input is arranged in the top of the sprocket wheel 14 Wheel 19, have through-hole 22 on power input wheel 19 and clamping mechanism can be with power output device, the present embodiment can positive and negative rotation electricity Machine connection transmission, the bottom of power input wheel 19 is additionally provided with transmission shaft 20, fluted 21 is arranged on the side of transmission shaft 20, chain The lower part of wheel 14 is provided with power output wheel 18, on the side of power output wheel 18 circumferentially face diameter to being provided with 6 through-holes 22, Clamp device can be accommodated(Clamp device can be screw or bolt etc., and the clamp device of the present embodiment uses adjustment bolt)Adjustment Bolt 17 enters, and one end of adjustment bolt 17 is connected with spring 15, and the other end of spring 15 is connected to a steel ball 16, steel ball 16 Shape can just be matched with the groove 21 being arranged on the side of transmission shaft 20, realize power output wheel 18,14 and of sprocket wheel Power input wheel 19 rotates coaxially.Sprocket wheel 14 and 18 integral forming of power output wheel can make stability more preferable.Correspondingly, passing Moving axis 20 also can be set on the top of power output wheel 18, and the function of technical solution described above also may be implemented.
When clutch works normally, steel ball 16 is engaged in groove 21, and power input wheel 19 and power output wheel 18 engage, To which transmission belt movable sprocket 14 rotates coaxially.When encountering abnormal condition, when the input of the power of power input wheel 19 is excessive, move Power wheel for inputting 19 can compress the spring 15 of the connection of steel ball 16, to realize the separation of power input wheel 19 and power output wheel 18. When the input of the power of power input wheel 19 is normal, power input wheel 19 and power output wheel 18 engage after being re-engaged, Transmission belt movable sprocket 14 rotates coaxially again.
The electronic flat-pushing pedal of the present embodiment has been connected with 7 bottom plate 5 of shell and has been stepped on as shown in Figure 1, shell 7 is fixed on vehicle bottom Plate 1.Pedal 1 is connected with wirerope 6, and wirerope 6 and chain 2 and 3 connection of clutch change the direction of motion with pulley, pedal ECU circuit 44 controls power output device, and power output device is usually the motor that positive and negative rotation can be achieved.
Technical solution of the present invention is further described below with reference to the operation of pedal.Pass through releasing the button to ECU for peripheral hardware Circuit 4 issues signal, controls motor by ECU circuit 4 and rotates clockwise or counterclockwise, when pedal needs to stretch out, motor is inverse Hour hands rotation, drives the chain 2 of engaged section to left shown in FIG. 1 and moved beneath, and the chain 2 moved downward drives chain 2 The wirerope 6 of connection bypass the 6th pulley 13 after, then from be arranged in 1 lower right of pedal be arranged the 5th pulley 12 around later, Back up around after third pulley 10, wirerope 6 is moved to the left by the change direction of motion, left in shell 7 further around setting is crossed It is downward that the second pulley 9 at upper angle, which changes the direction of motion, and bypasses and change after the 5th pulley 12 that 1 lower left of pedal is arranged Direction is back up into sprocket wheel 14, and thus transmission drives pedal 1 to upper direction as shown in the figure, i.e. pedal 1 is withdrawn.Conversely, then electric Machine clockwise movement drives the chain 2 of engaged section to right shown in FIG. 1 and upper direction, then successively around first pulley 8, Second pulley 9, third pulley 10, the 5th pulley 12, the transmission of the 6th pulley 13 drive pedal 1 to moved beneath as shown in the figure, i.e., Pedal 1 stretches out.
Further, in order to preferably be driven effect, third can be set in third pulley 10 and the intermediate of the 5th pulley 12 Pulley 11, third pulley 11 and third pulley 10 and the 5th pulley 12 can be conducive to wirerope 6 in this way and open not in same straight line Tight preferably transmission.The length of chain 2 matches at a distance from capable of preferably moving with pedal 1, and length is preferably slightly greater than 1 energy of pedal Enough flexible distances.
As another driving method of the present embodiment, can also be driven by a motor roller or its may be implemented coaxially to turn Dynamic device drives wirerope 6 to move, so that driving pedal 1 moves.
Embodiment 2
Unlike the first embodiment, the clutch in the present embodiment, the groove 21 and through-hole 22 are respectively arranged at described The adjacency section of power input wheel 19 and the power output wheel 18, short transverse of the through-hole 22 along the power output wheel 18 Setting, the groove 21 are set to the bottom of the power input wheel 19.Sprocket wheel 14 gear teeth can be arranged in power output wheel At 18 circumference, so that power output wheel 18 itself is constituted a sprocket wheel 14, be also possible to sprocket wheel 14 and be mounted on power output wheel 18 Bottom.Likewise, through-hole 22 can be set on power input wheel 19, corresponding groove 21 is set to the power output wheel Same function also may be implemented in 18 top.
Above embodiments 1 and clutch or electric treadle in embodiment 2, when pedal, which encounters failure, to be needed to be reset, only Need manual grasping and pulling wirerope 6 that reset can be realized, it is convenient and simple for operation.
Embodiment 3
Electronic flat-pushing pedal clutch 3, including power input wheel 19, connect and can rotate coaxially with the power input wheel 19 Power output wheel 18, it is corresponding multiple recessed that the power input wheel 19 with the power output wheel 18 is respectively arranged with position Slot 21 and through-hole 22, the size of the through-hole 22 can accommodate clamp device and pass through, and the top of the clamp device is provided with downwards The spring 15 of stretching, the other end of the spring 15 are connected with steel ball 16, the ruler of the size of the steel ball 16 and the groove 21 Very little to match, electronic flat-pushing pedal clutch 3 further includes the sprocket wheel 14 rotated coaxially connecting with the power output wheel 18. The through-hole 22 is the side that the power output wheel 18 is radially arranged in along the circumference of the power output wheel 18, the power The bottom of wheel for inputting 19 is provided with the transmission shaft 20 extended downwardly, the side setting fluted 21 of the transmission shaft 20.The chain Wheel 14 is set on the power output wheel 18, and the sprocket wheel 14 is located at the lower section of the power input wheel 19.The groove 21 The adjacency section of the power input wheel 19 and the power output wheel 18 is respectively arranged at through-hole 22.The through-hole 22 is along described The short transverse of power output wheel 18 is arranged, and the groove 21 is set to the bottom of the power input wheel 19.The power is defeated The diameter of wheel 18 is greater than the increment diameter of the sprocket wheel 14 out, and the increment that the diameter of the power input wheel 19 is less than sprocket wheel 14 is straight Diameter, the through-hole 22 are 6, are uniformly distributed around the disk stripping side, and the groove 21 is 6, and the side around transmission shaft 20 is equal Even distribution.
Using the electronic flat-pushing pedal of one kind of aforementioned clutch 3, including pedal 1 and shell 7, the pedal 1 is slidable It is connected to the shell 7, the electronic flat-pushing pedal clutch 3 for connecting power output device is installed on the shell 7, Be characterized in that, further include the chain 2 being meshed with the sprocket wheel 14 and the pedal 1 in the respectively arranged pulley in two sides and The multiple pulleys being set on shell 7, the direction of motion that the pulley changes chain 2 realizes the transmission of the chain 2, and drives The pedal 1 is stretched out or is withdrawn relative to shell 7.Wirerope 6 is also respectively connected in the both ends of the chain 2, by the chain 2 Both ends connection the wirerope 6 pass through each pulley.The length of the chain 2 is slightly larger than the pedal 1 relative to institute State the range difference that shell 7 is stretched out and withdrawn.The ECU electricity being connected with the power output device is also equipped on the shell 7 Road 4 is provided with electric current real-time monitoring device in the ECU circuit 4, and the ECU circuit 4 is preset with threshold current, described When ECU circuit 4 can be greater than the preset threshold current according to the electric current detected, the ECU circuit 4 is controllable described Power output device drives the electronic flat-pushing pedal clutch 3 to realize the withdrawal of the pedal 1.
Embodiment 4
The circuit part of electric treadle, electric treadle are provided with ECU circuit 4 and connect power output device i.e. motor, ECU electricity It is provided with real-time current detection in road 4, and pre-sets a maximum threshold values, when encountering barrier, electric current be will increase, when When electric current is increased above setting threshold current, ECU circuit 4, which will provide signal, rotates counterclockwise motor, to drive pedal 1 Automatically pedal 1 is bounced back into minimum position, the safety used is effectively guaranteed, reduces damage probability.In addition it each stretches The contracting period can automatically record and judge current parameters, and the electric current as caused by pedal aging increases, and adjust protection electricity by algorithm Threshold values is flowed to offset, and guarantees that pedal works normally for a long time.
It should be appreciated that although this specification is described in terms of embodiments, but not each embodiment only includes one A independent technical solution, this description of the specification is merely for the sake of clarity, and those skilled in the art should will say As a whole, the technical solution in each embodiment may also be suitably combined to form those skilled in the art can for bright book With the other embodiments of understanding.
The series of detailed descriptions listed above only for feasible embodiment of the invention specifically Protection scope bright, that they are not intended to limit the invention, it is all without departing from equivalent implementations made by technical spirit of the present invention Or change should all be included in the protection scope of the present invention.

Claims (7)

1. a kind of electronic flat-pushing pedal, including power device, tyre tread, shell, transmission device, is set on shell and on tyre tread The multiple power of leading pulleys, the transmission device are connected by leading power pulley with tyre tread, and the tyre tread depends on the flexible cunning of the shell It is dynamic, which is characterized in that be also equipped with the limiter clutch for power device to be connected with transmission device on the shell, wrap Power input wheel is included, connect the power output wheel that can be rotated coaxially with the power input wheel, on the power input wheel and institute It states and is respectively arranged with the corresponding multipair groove in position and through-hole on power output wheel, steel ball, pressure are sequentially arranged in the through-hole Tight spring, fastening bolt, steel ball is protruding along through-hole by spring compression by fastening bolt, the size of the steel ball with it is described The size of groove matches, and the steel ball is outwardly directed to be partially submerged into the groove, leads to power input wheel and power The occlusion of both output wheels limiter, the transmission device include chain and the wirerope that connect with chain, and the wirerope passes through The pulley is connected with the tyre tread, and the chain drives and drive wirerope by the limiter clutch, by the wirerope Draw the tyre tread telescopic slide.
2. electronic flat-pushing pedal as described in claim 1, which is characterized in that the power output wheel of the limiter clutch Equipped with axis hole, the through-hole is penetrated through from the side cambered surface of the power output wheel to the center of circle direction of wheel to the axis hole, described dynamic Power wheel for inputting is equipped with transmission shaft, and the transmission shaft is inserted into the axis hole of power output wheel, is provided in the side cambered surface of the transmission shaft Groove corresponding with lead to the hole site and quantity.
3. electronic flat-pushing pedal as described in claim 1, which is characterized in that the power input of the limiter clutch Wheel is equipped with axis hole, and the through-hole is penetrated through towards the center of circle direction of wheel to axis hole, institute by the lateral arcs of the power input wheel The power output wheel stated is equipped with transmission shaft, and the transmission shaft is inserted into the axis hole of power input wheel, the side arc of the transmission shaft Face is equipped with and all corresponding groove of number of openings and position.
4. electronic flat-pushing pedal as described in claim 1, which is characterized in that the power input of the limiter clutch Wheel and power output wheel are coaxially close to and opposite can be slided, and the through-hole is arranged on the wheel bottom surface of power input wheel and along axis To perforation, the groove is correspondingly arranged at power output wheel and is adjacent on the bottom surface of the power input wheel.
5. electronic flat-pushing pedal as described in claim 1, which is characterized in that the power input of the limiter clutch Wheel and power output wheel are coaxially close to and opposite can be slided, and the through-hole is arranged on the wheel bottom surface of power output wheel and along axis To perforation, the groove is correspondingly arranged at power input wheel and is adjacent on the bottom surface of the power output wheel.
6. the electronic flat-pushing pedal as described in claims 1 to 5 is any, which is characterized in that the described of the limiter clutch moves Sprocket is additionally provided on power output wheel.
7. the electronic flat-pushing pedal as described in claims 1 to 5 is any, which is characterized in that the described of the limiter clutch is led to Hole is 6, and the groove is also 6.
CN201610154270.7A 2016-03-18 2016-03-18 A kind of limiter clutch Active CN105605124B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201610154270.7A CN105605124B (en) 2016-03-18 2016-03-18 A kind of limiter clutch

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201610154270.7A CN105605124B (en) 2016-03-18 2016-03-18 A kind of limiter clutch

Publications (2)

Publication Number Publication Date
CN105605124A CN105605124A (en) 2016-05-25
CN105605124B true CN105605124B (en) 2018-11-20

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Application Number Title Priority Date Filing Date
CN201610154270.7A Active CN105605124B (en) 2016-03-18 2016-03-18 A kind of limiter clutch

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Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3303732A1 (en) * 1983-02-04 1984-08-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Clutch
CN2888169Y (en) * 2006-01-20 2007-04-11 姜其平 Adjustable mechanical transmission coupling device with overload protection function
DE202007000912U1 (en) * 2007-01-18 2007-04-05 Kircher, Werner Boarding aid or access facility for vehicles, has drive means which has drive element and which is designed as chain or belt whereby drive element is guided by deflection pulley
CN201208931Y (en) * 2008-05-16 2009-03-18 林会明 Obstacle free passageway guide device for vehicle
CN201354042Y (en) * 2008-12-23 2009-12-02 林会明 Car electric telescopic treadle assembly
US8297635B2 (en) * 2009-04-20 2012-10-30 Michael P. Ziaylek Automated retractable step apparatus
CN201703312U (en) * 2010-06-01 2011-01-12 欧勃亚索罗门(香港)控股有限公司 Electric step plate
CN203864573U (en) * 2014-05-27 2014-10-08 青岛欧勃亚汽车配件有限公司 One-level downward spiral electric pedal
CN205401514U (en) * 2016-03-18 2016-07-27 青岛欧勃亚汽车配件有限公司 Limit power clutch

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