CN201425720Y

CN201425720Y - Pedal device with damping structure

Info

Publication number: CN201425720Y
Application number: CN2009201860194U
Authority: CN
Inventors: 李运动; 刘晓峰; 常文娟
Original assignee: Wuhu Bethel Automotive Safety Systems Co Ltd
Current assignee: Wuhu Bethel Automotive Safety Systems Co Ltd
Priority date: 2009-06-23
Filing date: 2009-06-23
Publication date: 2010-03-17
Anticipated expiration: 2019-06-23

Abstract

The utility model discloses a pedal device with a damping structure, which comprises a pedal and a base, wherein a return spring is arranged between the pedal and the base, the axle hole of the pedalis penetrated through by a rotation shaft which is rotationally installed on the base, and the front end of the pedal is provided with a transmission arm. The pedal device is characterized in that a damping block is fixedly installed on the transmission arm, the outer end surface of the damping block is jointed on the inner side wall of the base, the outer side of the axle hole of the pedal is provided with a projection, and the outer end surface of the projection is jointed on the inner side wall of the base. After adopting the pedal device, the pedal is provided with a damping structure, andcan generate friction force with the base for realizing the damping effect, and the damping structure has simple structure and easy production, and fully utilizes the inner space of the pedal.

Description

A kind of device with pedal that has damping structure

Technical field

The utility model relates to the motor vehicle parts, specifically is a kind of device with pedal that has damping structure.

Background technology

Integrated along with the continuous development of automotive electronic technology and automotive system, people are just considering to develop research to drive-by-wire (X-By-Wire) direction that mechanical back-up system is arranged or do not have a mechanical back-up system.Adopt X-By-Wire can reduce parts complicacy, alleviate quality, reduce oil consumption and manufacturing cost, also correspondingly improved reliability and security.The line traffic control throttle is wherein to develop an example more rapidly.Utilize efp to replace traditional mechanical gas pedal in the line traffic control throttle system, realized the mechanical angular signal of pedal is converted into electric signal output.Traditional mechanical gas pedal has the relation of a hysteresis in the course of the work between the downforce curve of pedal and the return force curve of pedal.After adopting efp to replace the mechanical type gas pedal, if do not have corresponding damping structure to realize this function of mechanical gas pedal on the efp, feel to bring certain variation can for so driver's driving, when vehicle is in the fair speed state and travels, the driver need keep pedal motionless in a certain position, when being in this posture for a long time, take place tired possibly.Therefore, after adding damping function on the pedal, can improve the comfort of driving, slow down driving fatigue, eliminate certain potential safety hazard.In patent EP1942390A1, announced a kind of efp that has damping structure, the friction of having used cleverly between spring base and the pedal in this structure provides damping force, but because the arm of force of its friction force is shorter, if on pedal arm, obtain bigger damping sense, the friction force that needs so is just bigger, thereby in use, the decline of damping force is apparent in view, this damping force is relatively more responsive to the matching relationship between the parts in addition, seek out more stable damping force, manufacturing accuracy to parts requires than higher, in patent CN1341236A, announced the damper that is applicable to its specific device with pedal, but the part that need increase for the effect that realizes damping is more, adds that the installation footprint of this device with pedal also increases to some extent behind the damper.

The utility model content

The purpose of this utility model provides a kind of device with pedal that has damping structure, has damping structure on the pedal, can produce friction force with base inner wall, can realize damping, and damping structure is simple, is easy to make, and has utilized the inner space of pedal fully.

The technical solution of the utility model is as follows:

A kind of device with pedal that has damping structure, include pedal, base, be equipped with retracing spring between pedal and the base, pass in the axis hole of pedal and rotate the rotating shaft that is installed on the base, the pedal front end has transmission arm, it is characterized in that: be installed with damping block on the transmission arm, the outer face of damping block fits on the madial wall of base, the axis hole outside of described pedal is provided with projection, and the outer face of projection fits on the madial wall of base.

The front end of described transmission arm is provided with medium altitude groove, and medium altitude groove is built-in with damping block, and the outer face of damping block fits on the madial wall of base, and the axis hole outer ring of described pedal is wound with arc bump, and the outer face of arc bump fits on the madial wall of base.

Can be between the madial wall of described damping block and base that the inclined-plane cooperates or the plane cooperates.

After adopting the utility model, when the driver steps on pedal, pedal is rotated along direction D around rotating shaft, in rotating process, because the existence of damping structure, thereby produce friction, as can be known, friction can occur in from above-mentioned damping structure: a) between the madial wall of the end face of the damping block in the pedal front end medium altitude groove and base; B) between the madial wall of the transmission arm end face of pedal front end and base; C) the axis hole outer ring of pedal is wound with between the madial wall of the arc bump end face base corresponding with it, and perhaps pedal axis hole place can have in the medium altitude groove, and between the medial surface at damping block in the medium altitude groove and base axis hole place; D) friction can by a) and c) combination provide or b) and c) combination provide, if this moment, fricative friction force was μ 1, when pedal around rotating shaft when direction U rotates, the size that is located at identical position (with respect to the process of pedal depression) friction force is μ 2, at same position, since pedal when downward motion trend and pedal when upspringing movement tendency, the friction force size that damping structure produces is identical, but the direction of friction force is opposite, thereby cause in same position, when pedal has the trend of pressing down, when required power F1 that applies in the foot-operated position on the pedal 1 and pedal have the trend of upspringing, the required power F2 difference that applies in the foot-operated position on the pedal 1, the difference between F1 and the F2 is the damping force of device with pedal, do not consider other friction in the pedal, the difference between F1 and the F2 is μ 1+ μ 2.

Damping structure of the present utility model is arranged on pedal and the base, and the increase of this damping does not bring the problem of the increase of device with pedal installation footprint; Damping structure is realized simple, and is simple for structure, is easy to make good economy performance; The structure versatility is good, is applicable to as device with pedal such as efp, electronic brake pedal, electronics clutch pedals.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is the performance diagram of pedal force of the present utility model.

Embodiment

Referring to accompanying drawing, a kind of device with pedal that has damping structure, include pedal 1, base 5, be equipped with retracing spring 9 between pedal 1 and the base 5, in retracing spring 9 installations and the spring base 10, pass in the axis hole of pedal 1 and rotate the rotating shaft 7 that is installed on the base 5, the two ends of rotating shaft 7 are separately installed with copper sheathing 6, pedal 1 front end has transmission arm 8, the front end of transmission arm is provided with medium altitude groove 3, medium altitude groove 3 is built-in with the damping block 4 that material is a rubber mass, the outside end face of damping block 4 fits on the madial wall of base, can be between the outside end face of damping block 4 and the madial wall of base 5 that the inclined-plane cooperates or the plane cooperates, the axis hole outer ring of pedal 1 is wound with arc bump 2, and arc bump 2 outer faces fit on the madial wall of base 5.

Friction force between outside end face on the damping block 4 and the friction force between the madial wall on the base 5 and pedal 1 axis hole place, two lateral surfaces and the base 5 axis hole place base madial walls makes up the damping force that pedal is provided, and the size of this damping force can realize by the thickness of regulating damping block 4 or the outer face friction factor that changes on the damping block 4.As shown in Figure 1, pedal is (7 along direction D rotation around the shaft) in the downward motion trend that has been under pressure, and ignores other friction force that non-damping structure brings in the device, can list equation according to stress balance:

F1＝K1+μ1

F1 is a pedal force in the formula, and K1 is the power of conversion rear spring contribution, and μ 1 is the friction force of the back damping structure contribution that converts, and the friction force that this moment, damping structure provided hinders the motion of pedal, and μ 1 direction is opposite with D; As shown in Figure 9, (7 along direction U rotation around the shaft) ignored other friction force that non-damping structure brings in the device when pedal had the movement tendency of upspringing, and can list equation according to stress balance:

F2＝K2-μ2

F2 is a pedal force in the formula, K2 is the power of conversion rear spring contribution, and μ 2 is the friction force of the back damping structure contribution that converts, and the friction force that this moment, damping structure provided hinders the motion of pedal equally, μ 2 directions are opposite with U, suppose that in same position the size of the power of the rear spring that converts so contribution should be identical, i.e. F1=F2, the friction force μ 1 that the back damping structure that converts is contributed is identical with the value size of μ 2, direction is opposite, so in this position, and the damping force that device with pedal provides:

N＝F1-F2

＝(K1+μ1)-(K2-μ2)

＝μ1+μ2

Claims

1, a kind of device with pedal that has damping structure, include pedal, base, be equipped with retracing spring between pedal and the base, pass in the axis hole of pedal and rotate the rotating shaft that is installed on the base, the pedal front end has transmission arm, it is characterized in that: be installed with damping block on the transmission arm, the outer face of damping block fits on the madial wall of base, the axis hole outside of described pedal is provided with projection, and the outer face of projection fits on the madial wall of base.

2, according to the described a kind of device with pedal that has damping structure of right claim 1, it is characterized in that: the front end of described transmission arm is provided with medium altitude groove, medium altitude groove is built-in with damping block, the outer face of damping block fits on the madial wall of base, the axis hole outer ring of described pedal is wound with arc bump, and the outer face of arc bump fits on the madial wall of base.

3, a kind of device with pedal that has damping structure according to claim 1 is characterized in that: can be between the madial wall of described damping block and base that the inclined-plane cooperates or the plane cooperates.