CN212242968U - Passenger car accelerator pedal based on reverse dynamics - Google Patents
Passenger car accelerator pedal based on reverse dynamics Download PDFInfo
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- CN212242968U CN212242968U CN202020697179.1U CN202020697179U CN212242968U CN 212242968 U CN212242968 U CN 212242968U CN 202020697179 U CN202020697179 U CN 202020697179U CN 212242968 U CN212242968 U CN 212242968U
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- pedal
- footboard
- stroke
- accelerator pedal
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Abstract
The utility model discloses a passenger car accelerator pedal based on reverse dynamics belongs to accelerator pedal technical field, including footboard mount and footboard body, the footboard body rotates with the footboard mount to be connected, it is spacing to be equipped with the footboard stroke in the footboard mount, the footboard body is free rotation in the footboard stroke is spacing, the peak of footboard body in the footboard stroke is initial point, the minimum of footboard body in the footboard stroke is maximum stroke point, the footboard body includes connecting rod and face, the face passes through the connecting rod and is connected with the rotation of footboard mount, through the design based on reverse dynamics, make and keep comfortable and the balance of performance between driver's foot and the accelerator pedal, both satisfied the performance requirement, higher comfortable use experience also has simultaneously.
Description
Technical Field
The utility model belongs to the technical field of the accelerator pedal of automobile, more specifically, relate to a passenger car accelerator pedal based on reverse dynamics.
Background
Under urban road conditions, a driver needs to frequently operate an accelerator pedal, the man-machine matching design of the accelerator pedal directly influences the vehicle running and the driver operating feeling, the man-machine matching characteristic research of the accelerator pedal is developed, the man-machine design level of the automobile pedal is improved, the passenger vehicle accelerator pedal is taken as a research object, a pedal operation real vehicle testing system is set up, the urban road condition test is developed, the stroke of the accelerator pedal, the pedal resistance and the vehicle kinematic information are obtained, a relation function between the pedal stroke and the pedal resistance and the stable vehicle speed is established, a driver-pedal operation musculoskeletal biomechanics model is established, the maximum activation degree of lower limb muscles is taken as a comfort objective evaluation index, the pedal test data is taken as a simulation boundary condition, and the influence of the pedal stroke and the pedal resistance on the driver operating comfort is quantitatively evaluated by a method based on reverse dynamics, the research result provides scientific basis for the design and evaluation of the accelerator pedal of the passenger vehicle.
When the operator tramples the accelerator pedal, the operator is easy to trample the foot because the driving is a long-time process and the foot is easy to be tired due to the long-time trampling operation, so that the operator needs a comfortable accelerator pedal to be convenient for trampling and using.
SUMMERY OF THE UTILITY MODEL
1. Technical problem to be solved by the utility model
The utility model aims to solve the defect that current accelerator pedal can not compromise between travelling comfort and vehicle dynamic nature.
2. Technical scheme
In order to achieve the above purpose, the utility model provides a technical scheme does:
the utility model discloses a passenger car accelerator pedal based on reverse dynamics, including footboard mount and footboard body, the footboard body rotates with the footboard mount to be connected, is equipped with the footboard stroke in the footboard mount spacing, and the footboard body is free rotation in the footboard stroke is spacing, and the peak of footboard body in the footboard stroke is initial point, and the minimum of footboard body in the footboard stroke is maximum stroke point, and the footboard body includes connecting rod and face, and the face passes through the connecting rod and is connected with the rotation of footboard mount.
Preferably, the connecting rod is equipped with the backup pad with the face junction, is equipped with the swivel mount in the backup pad, and the swivel mount rotates with the face to be connected, is equipped with damping spring shock absorber between backup pad and the face.
Preferably, a rotating shaft is arranged on the plate surface, the rotating shaft is rotatably connected with the rotating seat, and the plate surface is rotatably connected with the connecting rod through the rotating shaft.
Preferably, the pedal body is rotated between the maximum stroke point and the initial point by an angle in the range of 0 to 45 °.
Preferably, the pedal travel limit comprises an upper contact and a lower limit point, and the positions of the upper contact and the lower limit point are adjustable.
3. Advantageous effects
Adopt the technical scheme provided by the utility model, compare with prior art, have following beneficial effect:
(1) the utility model discloses a passenger car accelerator pedal based on reverse dynamics through the design based on reverse dynamics for keep comfortable and the balance of performance between driver's foot and the accelerator pedal, both satisfied the performance requirement, also have higher comfortable use simultaneously and experience.
(2) As the design of the accelerator pedal of the passenger car, the theory and the result can be further extended to a brake pedal and a clutch pedal, so that the comfort and the safety of the pedal in the car can be integrally improved
Drawings
Fig. 1 is a schematic structural view of a passenger car accelerator pedal based on reverse dynamics according to the present invention;
fig. 2 is a schematic diagram of a travel change of a passenger car accelerator pedal based on reverse dynamics according to the present invention;
fig. 3 is a partial enlarged view of a passenger car accelerator pedal based on reverse dynamics according to the present invention;
FIG. 4 is a graph showing the relationship between the stable vehicle speed and the pedal stroke of the accelerator pedal of the passenger vehicle based on the inverse dynamics of the present invention;
FIG. 5 is a diagram of the relationship between the pedal resistance and the pedal stroke of a passenger car accelerator pedal based on inverse dynamics of the present invention;
fig. 6 is a geometric model diagram of a driver's leg based on a reverse dynamics accelerator pedal of a passenger vehicle according to the present invention;
fig. 7 is a usage state change diagram of a passenger car accelerator pedal based on reverse dynamics;
fig. 8 is the utility model discloses a foot angle change diagram of passenger car accelerator pedal based on reverse dynamics.
The reference numerals in the schematic drawings illustrate:
100. a pedal fixing frame; 110. a pedal body; 111. a connecting rod; 112. plate surface; 113. a support plate; 114. rotating; 115. a damping spring shock absorber; 116. a rotating shaft; 120. limiting the pedal stroke; 121. an upper contact; 122. a lower limit site.
Detailed Description
In order to facilitate understanding of the invention, the invention will be described more fully hereinafter with reference to the accompanying drawings, in which several embodiments of the invention are shown, but which can be embodied in many different forms and are not limited to the embodiments described herein, but which are provided so as to render the disclosure of the invention more thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present; the terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention; as used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Example 1
Referring to the attached drawings 1-3, the accelerator pedal for a passenger vehicle based on reverse dynamics in the embodiment includes a pedal fixing frame and a pedal body, the pedal body is rotatably connected with the pedal fixing frame, a pedal stroke limit is arranged in the pedal fixing frame, the pedal body freely rotates in the pedal stroke limit, the highest point of the pedal body in the pedal stroke limit is an initial point, the lowest point of the pedal body in the pedal stroke is a maximum stroke point, the pedal body includes a connecting rod and a plate surface, and the plate surface is rotatably connected with the pedal fixing frame through the connecting rod.
The connecting rod of this embodiment is equipped with the backup pad with the face junction, is equipped with the swivel mount in the backup pad, and the swivel mount rotates with the face to be connected, is equipped with damping spring shock absorber between backup pad and the face.
The face of this embodiment is equipped with the axis of rotation, and the axis of rotation is rotated with the swivel mount and is connected, and the face passes through the axis of rotation to be connected with the connecting rod rotation.
The pedal body of the present embodiment rotates by an angle in the range of 0 to 45 ° between the maximum stroke point and the initial point.
The pedal travel limit of the embodiment comprises an upper contact and a lower limit point, the upper contact and the lower limit point are adjustable in position, the positions of the upper contact and the lower limit point can be factory-set according to vehicle positioning, such as a car running, short travel can be selected, and long travel can be selected for trucks.
As shown in fig. 4, the above-mentioned accelerator pedal is designed according to inverse dynamics, and since the pedal stroke affects the acceleration and the stable speed of the vehicle, the accelerator pedal stroke is a function of the rate of change of the stable speed of the vehicle:
v(x)＝AR0e0.05x
＝0.033e0.05x
based on the above equation, it can be known that as the vehicle speed x increases, the required accelerator stroke of the vehicle gradually increases, and η is defined0＝AR0The method is used for expressing the acceleration performance of the vehicle and is related to the adjustment and calibration of the air inlet quantity of the engine of the vehicle.
As shown in fig. 5, the mapping function between pedal resistance and pedal travel:
F(x)＝F0+λln(x+0.5)
＝7.88+6.32ln(x+0.5)
the above equation, F (x) represents the pedal resistance as a function of pedal travel x, F0Representing pedal pretension; lambda represents the rate of change of the pedal resistance, and can represent the subjective feelings of lightness and heaviness of the pedal in the pedal man-machine design process. If a spring is used as the pedal support, λ represents the spring constant, F0Representing the pre-tension of the spring, as can be derived from the data of FIG. 5, F0＝7.88,λ＝6.32。
And (3) carrying out derivation on the formula to obtain a pedal resistance change rate function:
the pedal stroke is obtained by determining the rotation center of the pedal according to the pedal position information and the sensor installation position information based on the theory of three-point circle construction, and establishing the relationship between the displacement signal and the pedal stroke.
As shown in fig. 6, according to the multi-rigid-body theory, the lower limb of the human body is divided into a thigh segment, a shank segment and a foot, which are connected with each other through a hip joint, a knee joint and an ankle joint, and the lower limb is divided from the ankle joint for the foot according to newton's second law:
for the knee joint, the ankle joint is started and released:
the upper type
Knee and ankle joint moments; p is a radical ofAAnd pKKnee and ankle joint nodes respectively, p is pedal point, pHeelA heel point; m isSg and mTg weight of calf and foot, respectively, pSAnd pFThe calf section and the foot center of gravity position respectively.
As shown in the figures 7 and 8, because the foot and the shank section have a comfortable included angle range, the damping spring shock absorber is arranged, so that when an operator tramples the accelerator pedal, along with the increase of the trampling stroke, the damping spring shock absorber is stressed and compressed to drive the plate surface to be attached to the supporting plate, and the foot and the shank section keep a comfortable angle.
The above-mentioned embodiments only express a certain implementation manner of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention; it should be noted that, for those skilled in the art, without departing from the concept of the present invention, several variations and modifications can be made, which all fall within the protection scope of the present invention; therefore, the protection scope of the present invention should be subject to the appended claims.
Claims (5)
1. A passenger car accelerator pedal based on reverse dynamics is characterized in that: the pedal comprises a pedal fixing frame and a pedal body, wherein the pedal body is rotationally connected with the pedal fixing frame, a pedal stroke limit is arranged in the pedal fixing frame, the pedal body freely rotates in the pedal stroke limit, the highest point of the pedal body in the pedal stroke limit is an initial point, the lowest point of the pedal body in the pedal stroke is a maximum stroke point, the pedal body comprises a connecting rod and a plate surface, and the plate surface is rotationally connected with the pedal fixing frame through the connecting rod.
2. The inverse dynamics-based accelerator pedal for a passenger vehicle according to claim 1, wherein: the connecting rod is equipped with the backup pad with the face junction, be equipped with the swivel mount in the backup pad, the swivel mount rotates with the face to be connected, be equipped with damping spring bumper shock absorber between backup pad and the face.
3. The inverse dynamics-based accelerator pedal for a passenger vehicle according to claim 2, wherein: the plate surface is provided with a rotating shaft, the rotating shaft is rotatably connected with the rotating seat, and the plate surface is rotatably connected with the connecting rod through the rotating shaft.
4. The inverse dynamics-based accelerator pedal for a passenger vehicle according to claim 1, wherein: the pedal body is rotated between a maximum stroke point and an initial point within a range of 0-45 degrees.
5. The inverse dynamics-based accelerator pedal for a passenger vehicle according to claim 1, wherein: the pedal travel limit comprises an upper contact and a lower limit point, and the positions of the upper contact and the lower limit point are adjustable.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020697179.1U CN212242968U (en) | 2020-04-30 | 2020-04-30 | Passenger car accelerator pedal based on reverse dynamics |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020697179.1U CN212242968U (en) | 2020-04-30 | 2020-04-30 | Passenger car accelerator pedal based on reverse dynamics |
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| CN212242968U true CN212242968U (en) | 2020-12-29 |
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| CN202020697179.1U Active CN212242968U (en) | 2020-04-30 | 2020-04-30 | Passenger car accelerator pedal based on reverse dynamics |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295339A (en) * | 2021-11-30 | 2022-04-08 | 中国标准化研究院 | Testing device and testing method for foot-operated control device |
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2020
- 2020-04-30 CN CN202020697179.1U patent/CN212242968U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114295339A (en) * | 2021-11-30 | 2022-04-08 | 中国标准化研究院 | Testing device and testing method for foot-operated control device |
| CN114295339B (en) * | 2021-11-30 | 2023-11-24 | 中国标准化研究院 | Testing device and testing method of foot-operated control device |
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