CN112140875B - Arrangement method of light truck three pedals - Google Patents

Arrangement method of light truck three pedals Download PDF

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Publication number
CN112140875B
CN112140875B CN202011060045.XA CN202011060045A CN112140875B CN 112140875 B CN112140875 B CN 112140875B CN 202011060045 A CN202011060045 A CN 202011060045A CN 112140875 B CN112140875 B CN 112140875B
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pedal
accelerator pedal
point
accelerator
clutch
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CN112140875A (en
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徐柳
张健慧
李辉
王峰
李航
代永鹏
杨婷婷
黄平刚
李伟晨
任泽文
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Dongfeng Automobile Co Ltd
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Dongfeng Automobile Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K26/00—Arrangements or mounting of propulsion unit control devices in vehicles
    • B60K26/02—Arrangements or mounting of propulsion unit control devices in vehicles of initiating means or elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60K—ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES; ARRANGEMENT OR MOUNTING OF PLURAL DIVERSE PRIME-MOVERS IN VEHICLES; AUXILIARY DRIVES FOR VEHICLES; INSTRUMENTATION OR DASHBOARDS FOR VEHICLES; ARRANGEMENTS IN CONNECTION WITH COOLING, AIR INTAKE, GAS EXHAUST OR FUEL SUPPLY OF PROPULSION UNITS IN VEHICLES
    • B60K23/00—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for
    • B60K23/02—Arrangement or mounting of control devices for vehicle transmissions, or parts thereof, not otherwise provided for for main transmission clutches
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
    • B60T7/00—Brake-action initiating means
    • B60T7/02—Brake-action initiating means for personal initiation
    • B60T7/04—Brake-action initiating means for personal initiation foot actuated
    • B60T7/06—Disposition of pedal

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  • Engineering & Computer Science (AREA)
  • Transportation (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Braking Elements And Transmission Devices (AREA)
  • Auxiliary Drives, Propulsion Controls, And Safety Devices (AREA)

Abstract

A light truck three-pedal arrangement method comprises the following steps: preliminarily calculating the estimated pedal height H of the accelerator pedal according to H30; preliminarily calculating an estimated pedal angle Ra of the accelerator pedal according to H30; calculating an accelerator pedal plane angle A47 according to the seat height H30 of the vehicle to be designed; determining the initial position of the accelerator pedal according to the estimated pedal height h of the accelerator pedal, the estimated pedal angle Ra of the accelerator pedal, the accelerator pedal plane angle A47 and the shape and size of the accelerator pedal; determining the travel of an accelerator pedal; determining the rotation center of an accelerator pedal; arranging normal height differences of an accelerator pedal, a brake pedal and a clutch pedal; arranging the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal; and checking whether the 3D data of the pedal and the peripheral parts interfere with each other. The design can effectively reduce design change in the later stage and the number of times of trial-production of the sample, thereby improving the arrangement efficiency, shortening the development period and reducing the development cost.

Description

Arrangement method of light truck three pedals
Technical Field
The invention relates to an arrangement method of three pedals, in particular to an arrangement method of three pedals of a light truck, which is particularly suitable for arranging the three pedals of the light truck.
Background
With the development of the automobile industry technology, the three pedals of the light truck are used as automobile parts frequently operated by drivers, and the operation comfort and safety of the three pedals are particularly important. In the general layout design stage of the cab, the three pedals need to be arranged, and basic parameters of the three pedals are determined, wherein the basic parameters comprise pedal starting angles, pedal center point positions and the like. In the arrangement of the three pedals, when the height and the transverse position of the pedals are determined, the foot operation comfort of the pedals and the relation among the three pedals are considered, and particularly, the smoothness and the reasonability of the switching between the accelerator pedal and the brake pedal are ensured.
At present, in the arrangement process of three pedals of a light truck, human body postures are generally placed in CAD software; then determining the input of an accelerator pedal mechanism, a brake pedal mechanism and a clutch pedal mechanism, guiding the size of A47 and the height of a pedal according to a certain formula, finishing side view arrangement, and arranging a transverse gap by using an empirical value; the layout process often needs to be adjusted repeatedly, repeated try and multiple trial production of samples are needed in the layout process of the three pedals, the development period is long, and the cost is greatly increased.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, a sample needs to be repeatedly tried and trial-manufactured for many times in the arrangement process of the light truck three pedals, the development period is long, and the development cost is high, and provides the arrangement method of the light truck three pedals, which can shorten the development period and reduce the development cost.
In order to achieve the above purpose, the technical solution of the invention is as follows:
the arrangement method of the light truck three pedals is based on the following conditions, and the arrangement method of the light truck three pedals is a hanging three-pedal design; knowing the seat height H30, the stride point H, the heel point AHP, the shape and size of the overhead accelerator pedal, the shape and size of the overhead brake pedal, the shape and size of the overhead clutch pedal, and the carpet plane in compression for the vehicle to be designed;
a light truck three-pedal arrangement method comprises the following steps:
step one, preliminarily calculating the estimated pedal height H of the accelerator pedal according to H30:
h＝-0.0005(H30)2+0.2025(H30) +138 formula (1);
the pedal height h of the accelerator pedal can be a value within the range of +/-10 mm of a calculation result;
step two, preliminarily calculating an estimated pedal angle Ra of the accelerator pedal according to H30:
Ra＝0.0008(H30)2-0.4803(H30) +122 formula (2);
the pedal angle Ra of the accelerator pedal can be a value within the range of +/-5 degrees of a calculation result;
step three, calculating the plane angle A47 of the accelerator pedal according to the height H30 of the seat of the vehicle to be designed:
calculating an accelerator pedal plane angle A47 by substituting H30 into the following formula according to the seat height H30;
A47＝2.522*(10-7)*(H303)-3.961*(10-4)*(H302) +0.04644 (H30) +73.374 formula (3);
step four, determining the initial position of the accelerator pedal according to the estimated pedal height h of the accelerator pedal, the estimated pedal angle Ra of the accelerator pedal, the accelerator pedal plane angle A47 and the shape and size of the accelerator pedal:
on a longitudinal plane of the whole vehicle, a point M with a vertical distance h from an AHP point is arbitrarily taken above the AHP point, a straight line L1 with an included angle Ra from the vertical direction is made through the point M, an accelerator pedal surface arc line is made according to the shape and the size of an accelerator pedal, the accelerator pedal surface arc line is tangent to a straight line L1 by taking the position of a central point A of the accelerator pedal as a tangent point, then a ray L2 with an included angle A47 from a carpet plane in a compressed state is made by taking a point which is 203mm away from the AHP point on the ray L2 as a BOFRP point, the accelerator pedal surface arc line is moved to be tangent to an L2 at the BOFRP point, the position of the accelerator pedal arc line at this time is the position of the upper surface of the accelerator pedal when the accelerator pedal arc line is located at the initial position, and the initial position of the accelerator pedal is determined;
step five, determining the travel of the accelerator pedal:
when the accelerator pedal is positioned at an initial position, the central point of the accelerator pedal is positioned at a position Ai, namely Ai is an initial position reference point of the accelerator pedal;
the accelerator pedal stroke angle theta is calculated by substituting H30 into the following formula according to the seat height H30:
θ＝0.00005*(H302) +0.0122(H30) +34.5 formula (4);
after determining an initial position reference point Ai of an accelerator pedal, setting the stroke La of the accelerator pedal, wherein the value range of the stroke La of the accelerator pedal is 50 +/-10 mm, taking the initial position reference point Ai of the accelerator pedal as a starting point on a longitudinal plane of the whole vehicle, and taking a point Af with the distance of La from an Ai point in a direction with an included angle theta with a compressed carpet plane, wherein the Af is an extreme position reference point of the accelerator pedal;
obtaining an accelerator pedal stroke La and an accelerator pedal limit position reference point Af according to the steps;
step six, determining the rotation center of the accelerator pedal:
when the accelerator pedal rotates to the limit position from the initial position, the rotating angle along the rotating center is omega, the rotating coefficient of the accelerator pedal is Ta, and the values of Ta, La and omega conform to the following formula:
Figure GDA0003151384030000031
wherein the value range of omega is within 0.28 +/-0.05 rad;
since La is determined, the value of Ta can be obtained according to equation (3);
on the longitudinal plane of the whole vehicle, a vertical bisector of a connecting line of an initial position reference point Ai of the accelerator pedal and a limit position reference point Af of the accelerator pedal is made, and a point with the midpoint distance Ta from the connecting line between Ai and Af is taken as an accelerator pedal rotation central point o on the vertical bisector;
step seven, arranging the normal height difference of an accelerator pedal, a brake pedal and a clutch pedal:
the central point of the accelerator pedal is A, the central point of the brake pedal is B and the central point of the clutch pedal is C, the accelerator pedal, the brake pedal and the clutch pedal are projected onto a longitudinal plane of the whole vehicle, and the shortest distance from the central point C of the clutch pedal to the brake pedal is the normal height difference PL2 between the clutch pedal and the brake pedal; the shortest distance from the central point B of the brake pedal to the accelerator pedal is the normal height difference PL3 from the brake pedal to the accelerator pedal;
the height of a brake pedal and the height of a clutch pedal in the vertical direction are arranged according to the initial position of the accelerator pedal, so that the heights of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following conditions:
under the condition one, the value of PL2 is within the range of 35-65 mm;
secondly, the value of PL3 is in the range of 0-15 mm;
obtaining the height positions of an accelerator pedal, a brake pedal and a clutch pedal with normal height meeting the requirements;
step eight, arranging the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal:
arranging the transverse position relation among an accelerator pedal, a brake pedal and a clutch pedal according to the position of the point H so as to simultaneously meet the following requirements:
the method comprises the following steps that firstly, the length of the transverse distance a between the central point A of the accelerator pedal and the point H is 205mm to 230 mm;
secondly, the distance b between the accelerator pedal and the brake pedal is 60mm to 75 mm;
the third condition is that the transverse distance C between the central point C of the clutch pedal and the point H is less than or equal to 150 mm;
obtaining the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal which meet the requirements;
step nine, checking:
selecting a plurality of groups of pedal arrangement schemes in the arrangement range of the three pedals for simulation design according to the arrangement range of the three pedals which meets the requirements obtained in the steps, inputting simulation data of each group into 3D software, confirming whether the 3D data of the pedals and peripheral parts are interfered, selecting one group which is free of interference and has the most proper position as a final three-pedal arrangement scheme, and finishing the arrangement of the three pedals;
the A47 is an accelerator pedal plane angle, namely an included angle between a pedal plane and a horizontal plane.
The AHP point is a contact point of a heel and a carpet surface in a compressed state when the foot is correctly placed at the initial position of the accelerator pedal.
The three-pedal arrangement method of the light truck further comprises the following steps of comprehensively judging the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal:
after arranging the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal in the step eight, judging whether the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following judgment requirements,
the transverse span d of the clutch pedal center point C is 330 mm to 390 mm;
the transverse distance e between the center point B of the brake pedal and the point H is 150mm to 180 mm;
if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal do not meet the judgment requirement, returning to the step eight to adjust the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal;
and if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal meet the judgment requirement, entering the step nine.
The three-pedal arrangement method of the light truck further comprises the following steps of checking the spatial relationship between the transverse distribution and the fall distribution of the accelerator pedal and the brake pedal:
after the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal is comprehensively judged, the spatial relationship between the transverse distribution and the normal fall of the accelerator pedal and the brake pedal is checked according to the following requirements:
when b is more than or equal to 65 and less than or equal to 80, PL3 is more than or equal to 35 and less than or equal to-1.67 b + 173;
when b is more than or equal to 50 and less than or equal to 65, PL3 is more than or equal to 0.5b +70 and less than or equal to 65;
if the arrangement of the accelerator pedal and the brake pedal does not accord with the checking requirement, returning to the step one for rearrangement;
and if the arrangement of the accelerator pedal and the brake pedal meets the checking requirement, entering the ninth step for checking.
And theta is the stroke angle of the accelerator pedal, namely the included angle between the displacement of the accelerator pedal from the initial position to the limit position and the compressed carpet plane.
The Ai and BOFRP points may or may not be coincident.
And omega is an accelerator pedal rotation angle, namely an angle rotated along a rotation center when the accelerator pedal rotates from an initial position to an extreme position.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the arrangement method of the light truck three-pedal, disclosed by the invention, by limiting the range of various arrangement parameters of the accelerator pedal, the brake pedal and the clutch pedal in the arrangement process, a large number of designs which do not meet the actual application requirements are eliminated, the practicability of the three-pedal design is enhanced, the design change in the later stage is reduced, and the arrangement efficiency is improved. Therefore, the design limits the range of various arrangement parameters of the accelerator pedal, the brake pedal and the clutch pedal in the arrangement process, and selects a scheme for checking in the arrangement range of the three pedals meeting certain requirements, so that the arrangement efficiency can be improved, and the development cost can be reduced.
2. According to the constraint relation among the travel La of the accelerator pedal, the angle omega of rotation of the accelerator pedal along the rotation center when the accelerator pedal rotates from the initial position to the limit position and the rotation coefficient Ta of the accelerator pedal, the range of omega and La is limited, the rotation coefficient Ta of the accelerator pedal obtained by arrangement can be set reasonably, so that the foot movement is more reasonable when the accelerator pedal is stepped on, the surface of the accelerator pedal can be in full contact with the sole of the foot, and the operation comfort level is improved. Therefore, the design limits the value range of omega and La, and the reasonable value range of the rotation coefficient Ta is obtained according to the constraint relation among the travel La of the accelerator pedal, the angle omega of the accelerator pedal rotating along the rotation center when the accelerator pedal rotates from the initial position to the limit position, and the rotation coefficient Ta of the accelerator pedal, so that the accelerator pedal arranged according to the method can be more comfortable to operate.
3. According to the arrangement method of the light truck three pedals, the seventh step limits the normal height difference of the three pedals, and the eighth step limits the transverse position of the three pedals, so that the normal height difference and the transverse position of the three pedals meet certain requirements, a large number of three-pedal arrangement positions which do not meet the actual application requirements are eliminated, the arrangement efficiency is improved, the development period is shortened, and the development cost is reduced. Therefore, the design improves the arrangement efficiency, shortens the development period and reduces the development cost by limiting the normal height difference and the transverse position of the three pedals in the arrangement process.
4. According to the arrangement method of the light truck three-pedal, the transverse distribution of the accelerator pedal, the brake pedal and the clutch pedal is comprehensively judged, the design which does not meet the actual application requirement is further eliminated, the times of repeated attempts and trial production of samples in the development process of a cab can be effectively reduced, the arrangement efficiency is improved, and the trial production development cost is reduced. Therefore, the transverse distribution of the accelerator pedal, the brake pedal and the clutch pedal is comprehensively judged, the arrangement efficiency is improved, and the development cost is reduced.
5. According to the arrangement method of the light truck three-pedal, the transverse distribution and fall relation of the accelerator pedal and the brake pedal are checked, on the basis of the empirical value of transverse layout, the relevance between the transverse layout and the longitudinal fall of the brake pedal and the accelerator pedal is summarized, and the checking is performed in the three-pedal arrangement process, so that the running amount of feet is reasonable when the accelerator pedal and the brake pedal are switched and the feet are smoother when the pedals are switched; and the design change and the number of times of trial production of the sample in the later period can be effectively reduced, thereby shortening the development period and reducing the development cost. Therefore, the design ensures that the foot running quantity is reasonable when the accelerator pedal and the brake pedal arranged on the foot are switched by checking the transverse distribution and fall relation of the accelerator pedal and the brake pedal, and the foot is switched more smoothly; and the development period can be shortened, and the development cost can be reduced.
Drawings
FIG. 1 is a schematic diagram of determining an initial position of an accelerator pedal in accordance with the present invention.
FIG. 2 is a schematic diagram of determining the travel and center of rotation of an accelerator pedal in accordance with the present invention.
FIG. 3 is a diagram illustrating the position change of the accelerator pedal from the initial position to the extreme position when Ta takes different values according to the present invention;
FIG. 4 is a constraint relationship between the length of Ta and the value of ω in the present invention.
FIG. 5 is a normal high differential view of the three pedals of the present invention.
FIG. 6 is a schematic diagram of the lateral position of the three pedals of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 to 6, a method for arranging three pedals of a light truck is based on the following conditions: the arrangement method of the light truck three pedals is the design of a hanging three pedals; knowing the seat height H30, the stride point H, the heel point AHP, the shape and size of the overhead accelerator pedal, the shape and size of the overhead brake pedal, the shape and size of the overhead clutch pedal, and the carpet plane in compression for the vehicle to be designed, comprises the steps of:
step one, preliminarily calculating the estimated pedal height H of the accelerator pedal according to H30:
h＝-0.0005(H30)2+0.2025(H30) +138 formula (1);
the pedal height h of the accelerator pedal can be a value within the range of +/-10 mm of a calculation result;
step two, preliminarily calculating an estimated pedal angle Ra of the accelerator pedal according to H30:
Ra＝0.0008(H30)2-0.4803(H30) +122 formula (2);
the pedal angle Ra of the accelerator pedal can be a value within the range of +/-5 degrees of a calculation result;
step three, calculating the plane angle A47 of the accelerator pedal according to the height H30 of the seat of the vehicle to be designed:
calculating an accelerator pedal plane angle A47 by substituting H30 into the following formula according to the seat height H30;
A47＝2.522*(10-7)*(H303)-3.961*(10-4)*(H302) +0.04644 (H30) +73.374 formula (3);
step four, determining the initial position of the accelerator pedal according to the estimated pedal height h of the accelerator pedal, the estimated pedal angle Ra of the accelerator pedal, the accelerator pedal plane angle A47 and the shape and size of the accelerator pedal:
on a longitudinal plane of the whole vehicle, a point M with a vertical distance h from an AHP point is arbitrarily taken above the AHP point, a straight line L1 with an included angle Ra from the vertical direction is made through the point M, an accelerator pedal surface arc line is made according to the shape and the size of an accelerator pedal, the accelerator pedal surface arc line is tangent to a straight line L1 by taking the position of a central point A of the accelerator pedal as a tangent point, then a ray L2 with an included angle A47 from a carpet plane in a compressed state is made by taking a point which is 203mm away from the AHP point on the ray L2 as a BOFRP point, the accelerator pedal surface arc line is moved to be tangent to an L2 at the BOFRP point, the position of the accelerator pedal arc line at this time is the position of the upper surface of the accelerator pedal when the accelerator pedal arc line is located at the initial position, and the initial position of the accelerator pedal is determined;
step five, determining the travel of the accelerator pedal:
when the accelerator pedal is positioned at an initial position, the central point of the accelerator pedal is positioned at a position Ai, namely Ai is an initial position reference point of the accelerator pedal;
the accelerator pedal stroke angle theta is calculated by substituting H30 into the following formula according to the seat height H30:
θ＝0.00005*(H302) +0.0122(H30) +34.5 formula (4);
after determining an initial position reference point Ai of an accelerator pedal, setting the stroke La of the accelerator pedal, wherein the value range of the stroke La of the accelerator pedal is 50 +/-10 mm, taking the initial position reference point Ai of the accelerator pedal as a starting point on a longitudinal plane of the whole vehicle, and taking a point Af with the distance of La from an Ai point in a direction with an included angle theta with a compressed carpet plane, wherein the Af is an extreme position reference point of the accelerator pedal;
obtaining an accelerator pedal stroke La and an accelerator pedal limit position reference point Af according to the steps;
step six, determining the rotation center of the accelerator pedal:
when the accelerator pedal rotates to the limit position from the initial position, the rotating angle along the rotating center is omega, the rotating coefficient of the accelerator pedal is Ta, and the values of Ta, La and omega conform to the following formula:
Figure GDA0003151384030000071
wherein the value range of omega is within 0.28 +/-0.05 rad;
since La is determined, the value of Ta can be obtained according to equation (3);
on the longitudinal plane of the whole vehicle, a vertical bisector of a connecting line of an initial position reference point Ai of the accelerator pedal and a limit position reference point Af of the accelerator pedal is made, and a point with the midpoint distance Ta from the connecting line between Ai and Af is taken as an accelerator pedal rotation central point o on the vertical bisector;
step seven, arranging the normal height difference of an accelerator pedal, a brake pedal and a clutch pedal:
the central point of the accelerator pedal is A, the central point of the brake pedal is B and the central point of the clutch pedal is C, the accelerator pedal, the brake pedal and the clutch pedal are projected onto a longitudinal plane of the whole vehicle, and the shortest distance from the central point C of the clutch pedal to the brake pedal is the normal height difference PL2 between the clutch pedal and the brake pedal; the shortest distance from the central point B of the brake pedal to the accelerator pedal is the normal height difference PL3 from the brake pedal to the accelerator pedal;
the height of a brake pedal and the height of a clutch pedal in the vertical direction are arranged according to the initial position of the accelerator pedal, so that the heights of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following conditions:
under the condition one, the value of PL2 is within the range of 35-65 mm;
secondly, the value of PL3 is in the range of 0-15 mm;
obtaining the height positions of an accelerator pedal, a brake pedal and a clutch pedal with normal height meeting the requirements;
step eight, arranging the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal:
arranging the transverse position relation among an accelerator pedal, a brake pedal and a clutch pedal according to the position of the point H so as to simultaneously meet the following requirements:
the method comprises the following steps that firstly, the length of the transverse distance a between the central point A of the accelerator pedal and the point H is 205-230 mm;
secondly, the distance b between the accelerator pedal and the brake pedal is 60mm to 75 mm;
thirdly, the transverse distance C between the central point C of the clutch pedal and the point H is less than or equal to 150 mm;
obtaining the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal which meet the requirements;
step nine, checking:
and selecting a plurality of groups of pedal arrangement schemes in the arrangement range of the three pedals for simulation design according to the arrangement range of the three pedals which meets the requirements obtained in the steps, inputting simulation data of each group into 3D software, confirming whether the 3D data of the pedals and peripheral parts have interference, selecting one group which has no interference and is most suitable in position as a final three-pedal arrangement scheme, and finishing the three-pedal arrangement.
The three-pedal arrangement method of the light truck further comprises the following steps of comprehensively judging the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal:
after arranging the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal in the step eight, judging whether the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following judgment requirements,
the transverse span d of the clutch pedal center point C is 330 mm to 390 mm;
the transverse distance e between the center point B of the brake pedal and the point H is 150mm to 180 mm;
if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal do not meet the judgment requirement, returning to the step eight to adjust the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal;
and if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal meet the judgment requirement, entering the step nine.
The three-pedal arrangement method of the light truck further comprises the following steps of checking the spatial relationship between the transverse distribution and the fall distribution of the accelerator pedal and the brake pedal:
after the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal is comprehensively judged, the spatial relationship between the transverse distribution and the normal fall of the accelerator pedal and the brake pedal is checked according to the following requirements:
when b is more than or equal to 65 and less than or equal to 80, PL3 is more than or equal to 35 and less than or equal to-1.67 b + 173;
when b is more than or equal to 50 and less than or equal to 65, PL3 is more than or equal to 0.5b +70 and less than or equal to 65;
if the arrangement of the accelerator pedal and the brake pedal does not accord with the checking requirement, returning to the step one for rearrangement;
and if the arrangement of the accelerator pedal and the brake pedal meets the checking requirement, entering the ninth step for checking.
The A47 is an accelerator pedal plane angle, namely an included angle between a pedal plane and a horizontal plane.
And theta is the stroke angle of the accelerator pedal, namely the included angle between the displacement of the accelerator pedal from the initial position to the limit position and the compressed carpet plane.
The Ai and BOFRP points may or may not be coincident.
The AHP point is a contact point of a heel and a carpet surface in a compressed state when the foot is correctly placed at the initial position of the accelerator pedal.
And omega is an accelerator pedal rotation angle, namely an angle rotated along a rotation center when the accelerator pedal rotates from an initial position to an extreme position.
The principle of the invention is illustrated as follows:
knowing the seat height H30, the stride point H, the heel point AHP, the shape and size of the overhead accelerator pedal, the shape and size of the overhead brake pedal, the shape and size of the overhead clutch pedal, and the carpet plane in compression for the vehicle to be designed;
referring to fig. 1, the estimated pedal height H of the accelerator pedal is preliminarily calculated from H30:
h＝-0.0005(H30)2+0.2025(H30) +138 formula (1);
h can be taken within the range of +/-10 mm of the calculation result;
preliminarily calculating an estimated pedal angle Ra of the accelerator pedal from H30:
Ra＝0.0008(H30)2-0.4803(H30) +122 formula (2);
ra can be a value within the range of +/-5 degrees of a calculation result;
calculating A47 according to the seat height H30 of the vehicle to be designed:
according to the height H30 of the seat, substituting H30 into the following formula to obtain A47
A47＝2.522*(10-7)*(H303)-3.961*(10-4)*(H302) +0.04644 (H30) +73.374 formula (3);
on the longitudinal plane of the whole vehicle, a point M with a vertical distance h from the AHP point is arbitrarily selected above the AHP point, a straight line L1 with an included angle Ra between the point M and the vertical direction is made through the point M, an accelerator pedal surface arc line is made according to the shape and the size of an accelerator pedal, the accelerator pedal surface arc line is tangent to a straight line L1 by taking the position of the accelerator pedal central point A as a tangent point, meanwhile, the position of the accelerator pedal central point A is overlapped with the point M, and the position of the accelerator pedal surface arc line is estimated as the initial position of the accelerator pedal at the moment;
and then, taking an AHP point as a starting point as a ray L2 with an included angle of A47 with the plane of the carpet in a compressed state, taking a point which is 203mm away from the AHP point on the ray L2 as a BOFRP point, moving an arc line of the accelerator pedal surface to enable the arc line of the accelerator pedal surface to be tangent to the L2 at the BOFRP point, namely correcting the estimated initial position of the accelerator pedal, wherein the position of the arc line of the accelerator pedal surface is the position of the upper surface of the accelerator pedal when the accelerator pedal is located at the initial position, and determining the initial position of the accelerator pedal.
Referring to fig. 2, θ is an accelerator pedal stroke angle, which is an angle between a displacement of the accelerator pedal from an initial position to an extreme position and a compressed carpet plane, and a horizontal straight line in fig. 2 represents a plane parallel to the compressed carpet plane for easy understanding.
Referring to fig. 3, ω in fig. 3 is an accelerator pedal rotation angle, which is an angle rotated along a rotation center when the accelerator pedal rotates from an initial position to an extreme position; the broken lines in fig. 3 indicate the attitude of the accelerator pedal at the extreme position when Ta takes 45mm, 105mm, 185mm, respectively.
The initial position of the accelerator pedal refers to the position of the accelerator pedal when the accelerator pedal is not stepped on, and the limit position of the accelerator pedal refers to the position of the accelerator pedal when the accelerator pedal is stepped on to the bottom.
Example 1:
a light truck three-pedal arrangement method is based on the following conditions: the arrangement method of the light truck three pedals is the design of a hanging three pedals; knowing the seat height H30, the stride point H, the heel point AHP, the shape and size of the overhead accelerator pedal, the shape and size of the overhead brake pedal, the shape and size of the overhead clutch pedal, and the carpet plane in compression for the vehicle to be designed, comprises the steps of:
step one, preliminarily calculating the estimated pedal height H of the accelerator pedal according to H30:
h＝-0.0005(H30)2+0.2025(H30) +138 formula (1);
the pedal height h of the accelerator pedal can be a value within the range of +/-10 mm of a calculation result;
step two, preliminarily calculating an estimated pedal angle Ra of the accelerator pedal according to H30:
Ra＝0.0008(H30)2-0.4803(H30) +122 formula (2);
the pedal angle Ra of the accelerator pedal can be a value within the range of +/-5 degrees of a calculation result;
step three, calculating the plane angle A47 of the accelerator pedal according to the height H30 of the seat of the vehicle to be designed:
calculating an accelerator pedal plane angle A47 by substituting H30 into the following formula according to the seat height H30;
A47＝2.522*(10-7)*(H303)-3.961*(10-4)*(H302) +0.04644 (H30) +73.374 formula (3);
step four, determining the initial position of the accelerator pedal according to the estimated pedal height h of the accelerator pedal, the estimated pedal angle Ra of the accelerator pedal, the accelerator pedal plane angle A47 and the shape and size of the accelerator pedal:
on a longitudinal plane of the whole vehicle, a point M with a vertical distance h from an AHP point is arbitrarily taken above the AHP point, a straight line L1 with an included angle Ra from the vertical direction is made through the point M, an accelerator pedal surface arc line is made according to the shape and the size of an accelerator pedal, the accelerator pedal surface arc line is tangent to a straight line L1 by taking the position of a central point A of the accelerator pedal as a tangent point, then a ray L2 with an included angle A47 from a carpet plane in a compressed state is made by taking a point which is 203mm away from the AHP point on the ray L2 as a BOFRP point, the accelerator pedal surface arc line is moved to be tangent to an L2 at the BOFRP point, the position of the accelerator pedal arc line at this time is the position of the upper surface of the accelerator pedal when the accelerator pedal arc line is located at the initial position, and the initial position of the accelerator pedal is determined;
step five, determining the travel of the accelerator pedal:
when the accelerator pedal is positioned at an initial position, the central point of the accelerator pedal is positioned at a position Ai, namely Ai is an initial position reference point of the accelerator pedal;
the accelerator pedal stroke angle theta is calculated by substituting H30 into the following formula according to the seat height H30:
θ＝0.00005*(H302) +0.0122(H30) +34.5 formula (4);
after determining an initial position reference point Ai of an accelerator pedal, setting the stroke La of the accelerator pedal, wherein the value range of the stroke La of the accelerator pedal is 50 +/-10 mm, taking the initial position reference point Ai of the accelerator pedal as a starting point on a longitudinal plane of the whole vehicle, and taking a point Af with the distance of La from an Ai point in a direction with an included angle theta with a compressed carpet plane, wherein the Af is an extreme position reference point of the accelerator pedal;
obtaining an accelerator pedal stroke La and an accelerator pedal limit position reference point Af according to the steps;
step six, determining the rotation center of the accelerator pedal:
when the accelerator pedal rotates to the limit position from the initial position, the rotating angle along the rotating center is omega, the rotating coefficient of the accelerator pedal is Ta, and the values of Ta, La and omega conform to the following formula:
Figure GDA0003151384030000111
wherein the value range of omega is within 0.28 +/-0.05 rad;
since La is determined, the value of Ta can be obtained according to equation (3);
on the longitudinal plane of the whole vehicle, a vertical bisector of a connecting line of an initial position reference point Ai of the accelerator pedal and a limit position reference point Af of the accelerator pedal is made, and a point with the midpoint distance Ta from the connecting line between Ai and Af is taken as an accelerator pedal rotation central point o on the vertical bisector;
step seven, arranging the normal height difference of an accelerator pedal, a brake pedal and a clutch pedal:
the central point of the accelerator pedal is A, the central point of the brake pedal is B and the central point of the clutch pedal is C, the accelerator pedal, the brake pedal and the clutch pedal are projected onto a longitudinal plane of the whole vehicle, and the shortest distance from the central point C of the clutch pedal to the brake pedal is the normal height difference PL2 between the clutch pedal and the brake pedal; the shortest distance from the central point B of the brake pedal to the accelerator pedal is the normal height difference PL3 from the brake pedal to the accelerator pedal;
the height of a brake pedal and the height of a clutch pedal in the vertical direction are arranged according to the initial position of the accelerator pedal, so that the heights of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following conditions:
under the condition one, the value of PL2 is within the range of 35-65 mm;
secondly, the value of PL3 is in the range of 0-15 mm;
obtaining the height positions of an accelerator pedal, a brake pedal and a clutch pedal with normal height meeting the requirements;
step eight, arranging the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal:
arranging the transverse position relation among an accelerator pedal, a brake pedal and a clutch pedal according to the position of the point H so as to simultaneously meet the following requirements:
the method comprises the following steps that firstly, the length of the transverse distance a between the central point A of the accelerator pedal and the point H is 205-230 mm;
secondly, the distance b between the accelerator pedal and the brake pedal is 60mm to 75 mm;
thirdly, the transverse distance C between the central point C of the clutch pedal and the point H is less than or equal to 150 mm;
obtaining the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal which meet the requirements;
step nine, checking:
selecting a plurality of groups of pedal arrangement schemes in the arrangement range of the three pedals for simulation design according to the arrangement range of the three pedals which meets the requirements obtained in the steps, inputting simulation data of each group into 3D software, confirming whether the 3D data of the pedals and peripheral parts are interfered, selecting one group which is free of interference and has the most proper position as a final three-pedal arrangement scheme, and finishing the arrangement of the three pedals;
the A47 is an accelerator pedal plane angle, namely an included angle between a pedal plane and a horizontal plane;
the AHP point is a contact point of a heel and a carpet surface in a compressed state when the foot is correctly placed at the initial position of the accelerator pedal.
Example 2:
example 2 is substantially the same as example 1 except that:
the three-pedal arrangement method of the light truck further comprises the following steps of comprehensively judging the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal:
after arranging the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal in the step eight, judging whether the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following judgment requirements,
the transverse span d of the clutch pedal center point C is 330 mm to 390 mm;
the transverse distance e between the center point B of the brake pedal and the point H is 150mm to 180 mm;
if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal do not meet the judgment requirement, returning to the step eight to adjust the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal;
and if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal meet the judgment requirement, entering the step nine.
Example 3:
example 3 is substantially the same as example 2 except that:
the three-pedal arrangement method of the light truck further comprises the following steps of checking the spatial relationship between the transverse distribution and the fall distribution of the accelerator pedal and the brake pedal:
after the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal is comprehensively judged, the spatial relationship between the transverse distribution and the normal fall of the accelerator pedal and the brake pedal is checked according to the following requirements:
when b is more than or equal to 65 and less than or equal to 80, PL3 is more than or equal to 35 and less than or equal to-1.67 b + 173;
when b is more than or equal to 50 and less than or equal to 65, PL3 is more than or equal to 0.5b +70 and less than or equal to 65;
if the arrangement of the accelerator pedal and the brake pedal does not accord with the checking requirement, returning to the step one for rearrangement;
and if the arrangement of the accelerator pedal and the brake pedal meets the checking requirement, entering the ninth step for checking.

Claims (6)

1. A light truck three-pedal arrangement method is characterized in that: the three-pedal arrangement method is based on the following conditions:
the arrangement method of the light truck three pedals is the design of a hanging three pedals;
knowing the seat height H30, the cross-point H, the heel point AHP, the shape and size of the accelerator pedal, the shape and size of the brake pedal, the shape and size of the clutch pedal and the carpet plane in the compressed state of the vehicle to be designed, characterized by the steps of:
step one, preliminarily calculating the estimated pedal height H of the accelerator pedal according to H30:
h=-0.0005(H30)2+0.2025(H30) +138 formula (1);
the pedal height h of the accelerator pedal can be a value within the range of +/-10 mm of a calculation result;
step two, preliminarily calculating an estimated pedal angle Ra of the accelerator pedal according to H30:
Ra=0.0008(H30)2-0.4803(H30) +122 formula (2);
the pedal angle Ra of the accelerator pedal can be a value within the range of +/-5 degrees of a calculation result;
step three, calculating the plane angle A47 of the accelerator pedal according to the height H30 of the seat of the vehicle to be designed:
calculating an accelerator pedal plane angle A47 by substituting H30 into the following formula according to the seat height H30;
A47=2.522*(10-7)*(H303)-3.961*(10-4)*(H302) +0.04644 (H30) +73.374 formula (3);
step four, determining the initial position of the accelerator pedal according to the estimated pedal height h of the accelerator pedal, the estimated pedal angle Ra of the accelerator pedal, the accelerator pedal plane angle A47 and the shape and size of the accelerator pedal:
on a longitudinal plane of the whole vehicle, a point M with a vertical distance h from an AHP point is arbitrarily taken above the AHP point, a straight line L1 with an included angle Ra from the vertical direction is made through the point M, an accelerator pedal surface arc line is made according to the shape and the size of an accelerator pedal, the accelerator pedal surface arc line is tangent to a straight line L1 by taking the position of a central point A of the accelerator pedal as a tangent point, then a ray L2 with an included angle A47 from a carpet plane in a compressed state is made by taking a point which is 203mm away from the AHP point on the ray L2 as a BOFRP point, the accelerator pedal surface arc line is moved to be tangent to an L2 at the BOFRP point, the position of the accelerator pedal arc line at this time is the position of the upper surface of the accelerator pedal when the accelerator pedal arc line is located at the initial position, and the initial position of the accelerator pedal is determined;
step five, determining the travel of the accelerator pedal:
when the accelerator pedal is positioned at an initial position, the central point of the accelerator pedal is positioned at a position Ai, namely Ai is an initial position reference point of the accelerator pedal;
the accelerator pedal stroke angle theta is calculated by substituting H30 into the following formula according to the seat height H30:
θ=0.00005*（H302) +0.0122(H30) +34.5 formula (4);
after determining an initial position reference point Ai of an accelerator pedal, setting the stroke La of the accelerator pedal, wherein the value range of the stroke La of the accelerator pedal is 50 +/-10 mm, taking the initial position reference point Ai of the accelerator pedal as a starting point on a longitudinal plane of the whole vehicle, and taking a point Af with the distance of La from an Ai point in a direction with an included angle theta with a compressed carpet plane, wherein the Af is an extreme position reference point of the accelerator pedal;
obtaining an accelerator pedal stroke La and an accelerator pedal limit position reference point Af according to the steps;
step six, determining the rotation center of the accelerator pedal:
when the accelerator pedal rotates to the limit position from the initial position, the rotating angle along the rotating center is omega, the rotating coefficient of the accelerator pedal is Ta, and the values of Ta, La and omega conform to the following formula:
Figure DEST_PATH_IMAGE001
formula (5)
Wherein the value range of omega is within 0.28 +/-0.05 rad;
since La is determined, the value of Ta can be obtained according to equation (3);
on the longitudinal plane of the whole vehicle, a vertical bisector of a connecting line of an initial position reference point Ai of the accelerator pedal and a limit position reference point Af of the accelerator pedal is made, and a point with the midpoint distance Ta from the connecting line between Ai and Af is taken as an accelerator pedal rotation central point o on the vertical bisector;
step seven, arranging the normal height difference of an accelerator pedal, a brake pedal and a clutch pedal:
the central point of the accelerator pedal is A, the central point of the brake pedal is B and the central point of the clutch pedal is C, the accelerator pedal, the brake pedal and the clutch pedal are projected onto a longitudinal plane of the whole vehicle, and the shortest distance from the central point C of the clutch pedal to the brake pedal is the normal height difference PL2 between the clutch pedal and the brake pedal; the shortest distance from the central point B of the brake pedal to the accelerator pedal is the normal height difference PL3 from the brake pedal to the accelerator pedal;
the height of a brake pedal and the height of a clutch pedal in the vertical direction are arranged according to the initial position of the accelerator pedal, so that the heights of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following conditions:
under the condition one, the value of PL2 is within the range of 35-65 mm;
secondly, the value of PL3 is in the range of 0-15 mm;
obtaining the height positions of an accelerator pedal, a brake pedal and a clutch pedal with normal height meeting the requirements;
step eight, arranging the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal:
arranging the transverse position relation among an accelerator pedal, a brake pedal and a clutch pedal according to the position of the point H so as to simultaneously meet the following requirements:
the method comprises the following steps that firstly, the length of the transverse distance a between the central point A of the accelerator pedal and the point H is 205-230 mm;
secondly, the distance b between the accelerator pedal and the brake pedal is 60mm to 75 mm;
thirdly, the transverse distance C between the central point C of the clutch pedal and the point H is less than or equal to 150 mm;
obtaining the transverse positions of an accelerator pedal, a brake pedal and a clutch pedal which meet the requirements;
step nine, checking:
selecting a plurality of groups of pedal arrangement schemes in the arrangement range of the three pedals for simulation design according to the arrangement range of the three pedals which meets the requirements obtained in the steps, inputting simulation data of each group into 3D software, confirming whether the 3D data of the pedals and peripheral parts are interfered, selecting one group which is free of interference and has the most proper position as a final three-pedal arrangement scheme, and finishing the arrangement of the three pedals;
the A47 is an accelerator pedal plane angle, namely an included angle between a pedal plane and a horizontal plane;
the AHP point is a contact point of a heel and a carpet surface in a compressed state when the foot is correctly placed at the initial position of the accelerator pedal.
2. The arrangement method of the light truck three-pedal as claimed in claim 1, wherein:
the three-pedal arrangement method of the light truck further comprises the following steps of comprehensively judging the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal:
after arranging the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal in the step eight, judging whether the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal simultaneously meet the following judgment requirements,
the transverse span d of the clutch pedal center point C is 330 mm to 390 mm;
the transverse distance e between the center point B of the brake pedal and the point H is 150mm to 180 mm;
if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal do not meet the judgment requirement, returning to the step eight to adjust the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal;
and if the transverse positions of the accelerator pedal, the brake pedal and the clutch pedal meet the judgment requirement, entering the step nine.
3. The arrangement method of the light truck three-pedal as claimed in claim 2, wherein:
the three-pedal arrangement method of the light truck further comprises the following steps of checking the spatial relationship between the transverse distribution and the fall distribution of the accelerator pedal and the brake pedal:
after the transverse distribution of an accelerator pedal, a brake pedal and a clutch pedal is comprehensively judged, the spatial relationship between the transverse distribution and the normal fall of the accelerator pedal and the brake pedal is checked according to the following requirements:
when b is more than or equal to 65 and less than or equal to 80, PL3 is more than or equal to 35 and less than or equal to-1.67 b + 173;
when b is more than or equal to 50 and less than or equal to 65, PL3 is more than or equal to 0.5b +70 and less than or equal to 65;
if the arrangement of the accelerator pedal and the brake pedal does not accord with the checking requirement, returning to the step one for rearrangement;
and if the arrangement of the accelerator pedal and the brake pedal meets the checking requirement, entering the ninth step for checking.
4. The method for arranging light truck three pedals as claimed in claim 3, wherein:
and theta is the stroke angle of the accelerator pedal, namely the included angle between the displacement of the accelerator pedal from the initial position to the limit position and the compressed carpet plane.
5. The method for arranging light truck three pedals as claimed in claim 4, wherein:
the Ai and BOFRP points may or may not be coincident.
6. The method for arranging light truck three pedals as claimed in claim 5, wherein:
and omega is an accelerator pedal rotation angle, namely an angle rotated along a rotation center when the accelerator pedal rotates from an initial position to an extreme position.
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