CN115422655A - Method for checking arrangement of accelerator pedal and brake pedal - Google Patents

Method for checking arrangement of accelerator pedal and brake pedal Download PDF

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Publication number
CN115422655A
CN115422655A CN202211011008.9A CN202211011008A CN115422655A CN 115422655 A CN115422655 A CN 115422655A CN 202211011008 A CN202211011008 A CN 202211011008A CN 115422655 A CN115422655 A CN 115422655A
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accelerator pedal
brake pedal
pedal
driver
angle
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Chinese (zh)
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简宇
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Chongqing Changan Automobile Co Ltd
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Chongqing Changan Automobile Co Ltd
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/15—Vehicle, aircraft or watercraft design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/10—Geometric CAD
    • G06F30/17—Mechanical parametric or variational design
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F30/00—Computer-aided design [CAD]
    • G06F30/20—Design optimisation, verification or simulation

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  • Aviation & Aerospace Engineering (AREA)
  • Automation & Control Theory (AREA)
  • Braking Elements And Transmission Devices (AREA)

Abstract

The invention belongs to the technical field of vehicle part arrangement, and particularly relates to a method for checking arrangement of an accelerator pedal and a brake pedal, which comprises the following steps: s1: inputting joint components of a human body two-dimensional template in CATIA software, adjusting the joint components to a whole vehicle coordinate system, forming corresponding joint angles among the joint components, and presetting joint angle parameters; s2: the front sight distance of a driver is initially determined, and a driver sight line is made according to the front face model and the ground line of the vehicle type, so that the eye point of the driver is above the sight line; s3: the positions and angles of the accelerator pedal and the brake pedal are adjusted according to the braking stroke of the accelerator pedal and the brake pedal stepped by the driver. The purpose is as follows: the method can check the actual pedal use positions of different human bodies, so that the arrangement of the brake pedal and the accelerator pedal is more accurate, the actual use state of a driver is more met, and the cost and time for sample piece manufacturing and physical evaluation are effectively reduced.

Description

Method for checking arrangement of accelerator pedal and brake pedal
Technical Field
The invention belongs to the technical field of vehicle part arrangement, and particularly relates to a method for checking arrangement of an accelerator pedal and a brake pedal.
Background
The accelerator pedal and the brake pedal are high-frequency parts for the passenger compartment, the driving experience of a user is seriously influenced by the comfort of the accelerator pedal and the brake pedal, and the driving fatigue of a driver can be reduced by the reasonable pedal position. At present, the arrangement mode of an accelerator pedal and a brake pedal of a host factory is that pedal position is preliminarily determined according to enterprise specifications, then a sample is manufactured for subjective evaluation, and an evaluation result is continuously optimized.
The man-machine engineering is a necessary part of the whole vehicle research and development design, the relevant standards of the man-machine engineering design in China are still imperfect at present, most host machines still adopt SAE (American human body template system) as a main system for checking, so that the actual driving experience of the users in China is not matched, and the phenomenon that the design expectation of the products in the early stage is not matched with the internal evaluation of the enterprises in the later stage is easy to occur. The Chinese standardization research institute establishes an authoritative Chinese human body database and an authoritative driving posture database, and the human body template of the database is used for checking so that the use posture of the Chinese driver can be better fitted.
Chinese patent: CN103399972A, which discloses a method for checking the overall arrangement parameters of a cab, the method comprises the following steps: creating a human body R point coordinate and a two-dimensional data model of human body trunk, head and neck, upper arm, forearm, hand, thigh, shank and foot; adjusting the established two-dimensional data model to a finished automobile coordinate system, and presetting the range of the angle parameters of each joint; and establishing position parameters of all parts in the cab under the whole vehicle coordinate system, adjusting the position parameters of all joints to be matched with the position parameters of the corresponding parts in the cab, thereby arranging a cab human body model, carrying out editing comfort check on the angle parameters of all joints by using a check command, and sending out a warning if at least one of the joint angle parameters exceeds a preset range. The arrangement state of the two-dimensional human body model in the overall arrangement design of the cab is simply and visually presented, and the efficiency of the overall arrangement design of the vehicle body is improved. The invention generally describes a man-machine checking method in a passenger compartment, but the checking of specific parts is not accurate enough to meet the actual checking work requirement of a pedal.
Disclosure of Invention
The purpose of the invention is: the method can be used for checking according to the actual pedal use positions of different human bodies, so that the arrangement of the brake pedal and the accelerator pedal is more accurate, the actual use state of a driver is more met, and the cost and time for sample manufacturing and physical evaluation are effectively reduced.
In order to achieve the technical purpose, the technical scheme adopted by the invention is as follows:
a method of checking accelerator pedal and brake pedal placement comprising the steps of:
s1: inputting joint components of a human body two-dimensional template in CATIA software, adjusting the joint components to a coordinate system of the whole vehicle, connecting the joint components through joint points, forming corresponding joint angles among the joint components, and presetting joint angle parameters;
s2: the front sight distance of a driver is initially determined, a driver sight line is made according to the front face model and the ground line of the vehicle type, and the eyepoint of the driver is positioned above the sight line so as to adjust the angle parameters of each joint;
s3: according to the braking stroke of the driver for stepping on the accelerator pedal and the brake pedal, the positions and the angles of the accelerator pedal and the brake pedal are adjusted to meet the requirement 5 th ～95 th The joint comfort of the human body.
Further, in the step S1, the floor angle α 1, the ankle angle α 2, the sitting height H30, and the backrest angle α 6 are previously set, according to the calculation formula:
H30＝L1*sin(α1)+L2*sin(180°-α1-83.5°)+L3*sin(180°-α1-α2+6.5°)-L4*sin(α3)
α3＝arcsin((L1*sin(α1)+L2*sin(180°-α1-83.5°)+L3*sin(180°-α1-α2+6.5°)-H30))/L4
α4＝α1+α2-6.5°-α3
α5＝90°-α3+α6
and calculating to obtain a thigh angle alpha 3, a knee angle alpha 4 and a trunk angle alpha 5 so as to adjust the posture of the human body.
Further, in the step S2, in the process of initially determining the front distance of the driver, the front distance range of the driver is set to be 5m to 7m.
Further, in the step S2, the specific step of making the driver sight line according to the front face model and the ground line of the vehicle type includes: and a Z-direction straight line is made to pass through an X plane and a Z plane of the whole vehicle and tangent to the front bumper, the straight line translates forwards and is intersected with the ground line to obtain an intersection point A, and the straight line passing through the A point and tangent to the front cover is a driver view line.
Further, in the step S3, before the driver steps on the accelerator pedal and the brake pedal, the travel and the heel point of the seat slide rail are determined according to the vehicle height plan, and the range of the height difference between the accelerator pedal and the brake pedal is controlled as follows: 38-45mm, the arrangement range of the central point of the brake pedal in the Y direction of the whole vehicle coordinate system is as follows: 0-55mm, the arrangement range of the central point or the stress point of the accelerator pedal in the Y direction of the whole vehicle coordinate system is as follows: 165-195mm.
Further, in the step S3, a constraint command is used in CATIA software to constrain the joint angles, and the foot, trunk angle α 5, knee angle α 4, and thigh angle α 3 are adjusted according to the floor angle α 1, ankle angle α 2, sitting height H30, and backrest angle α 6, so as to adjust the position and angle of the accelerator pedal, so that when the accelerator pedal satisfies that the ankle angle α 2 of the human body template is 87 °, the foot is tangent to one third of the accelerator pedal, the manikin and the heel point are relatively stationary, the foot is rotated, the position and angle of the brake pedal are adjusted, and when the sole surface of the foot is tangent to the brake surface, the ankle angle α 2 is not less than 70 °.
Further, in the step S3, when the full stroke of the accelerator pedal and the automatic pedal initial position reach one-half of the full stroke, the ankle angle α 2 range of motion is: 70-100 degrees, the knee angle α 4 ranges from 95-135 degrees, the trunk angle α 5 ranges from: 95-120 degrees, and the center point of the brake pedal and the center point or the stress point of the accelerator pedal are arranged at 5 th And 95 th In the middle of the pedal point.
The invention adopting the technical scheme has the following advantages:
1. according to the scheme, the Chinese human body is used as the template, and the checking is carried out according to the actual pedal use positions of different Chinese human bodies, so that the arrangement of the brake pedal and the accelerator pedal is more accurate, the actual use state of a Chinese driver is more met, and the cost and time for sample piece manufacturing and physical evaluation are effectively reduced;
2. the position and the angle of accelerator pedal and brake pedal are adjusted according to the human body position parameters, so that the accelerator pedal and the brake pedal are more suitable for the comfort requirement of human body joints, the arrangement of the brake pedal and the accelerator pedal is more accurate, the development cost can be effectively reduced, and the development period is shortened.
Drawings
The invention is further illustrated by the non-limiting examples given in the accompanying drawings;
FIG. 1 is a side view of the angles of the joints in a method of checking the placement of an accelerator pedal and a brake pedal of the present invention;
FIG. 2 is a side view of the dimensions of the joints in a method of checking the placement of an accelerator pedal and a brake pedal of the present invention;
FIG. 3 is a side view of an accelerator pedal and a brake pedal in a method of checking the arrangement of the accelerator pedal and the brake pedal of the present invention;
the main element symbols are as follows:
1 seat slide rail stroke, 2 brake pedals and 3 floor type accelerator pedals.
Detailed Description
The invention is described in detail below with reference to the drawings and specific embodiments, it is to be noted that in the drawings or description, similar or identical parts are provided with the same reference numerals, and implementations not shown or described in the drawings are known to those of ordinary skill in the art. In addition, directional terms, such as "upper", "lower", "top", "bottom", "left", "right", "front", "rear", and the like, used in the embodiments are only directions referring to the drawings, and are not intended to limit the scope of the present invention.
As shown in fig. 1 to 3, a method for checking an arrangement of an accelerator pedal and a brake pedal provided in an embodiment of the present application includes the following steps:
s1: in some optional embodiments, the two-dimensional template of the Chinese human body is adopted, wherein the body and the head and the neck are integrated to form a two-dimensional data model, all parts of the joint are adjusted to be under a whole vehicle coordinate system, all parts of the joint are connected through joint points, corresponding joint angles are formed among all parts of the joint, relevant parameters of the joint angles are preset, and the aim of adjusting the posture of the human body is achieved, wherein a floor angle alpha 1, an ankle angle alpha 2, a sitting height H30 and a backrest angle alpha 6 are set according to the following formula:
H30＝L1*sin(α1)+L2*sin(180°-α1-83.5°)+L3*sin(180°-α1-α2+6.5°)-L4*sin(α3)
α3＝arcsin((L1*sin(α1)+L2*sin(180°-α1-83.5°)+L3*sin(180°-α1-α2+6.5°)-H30))/L4
α4＝α1+α2-6.5°-α3
α5＝90°-α3+α6
the angles of the thigh angle α 3, knee angle α 4 and trunk angle α 5 can be calculated.
Wherein, the parameters in the formula are explained as follows: a floor angle alpha 1 is formed by the X plane and the Y plane of the whole vehicle and the bottom surface of the foot, an ankle angle alpha 2 is formed by the foot and a crus joint line, a thigh angle alpha 3 is formed by the X plane and the Y plane of the whole vehicle, a knee angle alpha 4 is formed by the crus joint line and the thigh joint line, a trunk angle alpha 5 is formed by the thigh joint line and the trunk joint line, and a backrest angle alpha 6 is formed by the X plane and the Y plane of the whole vehicle; l1 is the sole size, L2 is the distance from the ankle joint point to the foot ground, L3 is the calf joint size, and L4 is the thigh joint size.
In some alternative embodiments, the backrest angle α 6 is typically designed to be 25 °, which may be adjusted to the development requirements of a particular vehicle model.
S2: according to theoretical analysis and real vehicle evaluation, the front sight distance range of a driver is 5m-7m, the front sight distance of the sedan is set to be 6.5m, the front sight distance of the SUV is 5m, and the sight line of the driver is made according to the front face shapes and the ground lines of different vehicle types, and the method comprises the following specific steps of: and when the vehicle type is SUV, the straight line translates 5m forward, so that the straight line is intersected with the ground line to obtain an intersection point A, the straight line passing through the A point and tangent to the front cover is a driver visual field line, and the eye point of the driver is above the visual field line.
S3: determining a seat slide rail stroke 1 and a heel point according to the vehicle height plan, and controlling the height difference range of an accelerator pedal 3 and a brake pedal 2 to be as follows: 38-45mm, the arrangement range of the central point of the brake pedal 2 in the Y direction of the whole vehicle coordinate system is as follows: 0-55mm, the arrangement range of the central point or the stress point of the accelerator pedal 3 in the Y direction of the whole vehicle coordinate system is as follows: 165-195mm. Restraining angles of all joints by using a restraint command in CATIA software, adjusting a foot angle, a trunk angle alpha 5, a knee angle alpha 4 and a thigh angle alpha 3 according to a set floor angle alpha 1, an ankle angle alpha 2, a sitting height H30 and a backrest angle alpha 6, so as to adjust the position and the angle of an accelerator pedal 3, ensure that when the accelerator pedal 3 meets the condition that the ankle angle alpha 2 of a human body template is 87 degrees, the foot is tangent to one third of the accelerator pedal 3, then a human body model and a heel point are relatively static, the foot is rotated, the position and the angle of a brake pedal 2 are adjusted, and when the bottom surface of the foot is tangent to the surface of the brake pedal 2, the ankle angle alpha 2 is more than or equal to 70 degrees;
in some alternative embodiments, the ankle angle α 2 range of motion is, for the entire accelerator pedal 3 full stroke and the brake pedal 2 initial position to one-half of the entire stroke: 70-100 degrees, the knee angle alpha 4 has a range of motion of 95-135 degrees, and the trunk angle alpha 5 has a range of motion of: 95-120 degrees, and the central point of the brake pedal 2 and the central point or the stress point of the accelerator pedal 3 are arranged at 5 th And 95 th In the middle of the pedal point of (2) to satisfy 5 th ～95 th The human demand to make arranging of accelerator pedal 3 and brake pedal 2 more adapt to human articular travelling comfort demand, simultaneously, make arranging of brake pedal 2 and accelerator pedal 3 more accurate, accord with china driver's true user state more, and effectively reduce the cost and the time of later stage exemplar preparation and material object evaluation.
The method for checking the arrangement of the accelerator pedal and the brake pedal provided by the invention is described in detail above. The description of the specific embodiments is only intended to facilitate an understanding of the method of the invention and its core ideas. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, it is possible to make various improvements and modifications to the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.

Claims (7)

1. A method for checking the arrangement of an accelerator pedal and a brake pedal is characterized in that: the method comprises the following steps:
s1: inputting joint components of a human body two-dimensional template in CATIA software, adjusting the joint components to a coordinate system of the whole vehicle, connecting the joint components through joint points, forming corresponding joint angles among the joint components, and presetting joint angle parameters;
s2: the front sight distance of a driver is initially determined, a driver sight line is made according to the front face model and the ground line of the vehicle type, and the eyepoint of the driver is positioned above the sight line so as to adjust the angle parameters of each joint;
s3: according to the braking stroke of the driver for stepping on the accelerator pedal and the brake pedal, the positions and the angles of the accelerator pedal and the brake pedal are adjusted to meet the requirement 5 th ～95 th The joint comfort of the human body.
2. A method of calibrating an accelerator pedal and brake pedal arrangement as claimed in claim 1, wherein: in the step S1, a floor angle α 1, an ankle angle α 2, a sitting height H30, and a backrest angle α 6 are preset, according to a calculation formula:
H30＝L1*sin(α1)+L2*sin(180°-α1-83.5°)+L3*sin(180°-α1-α2+6.5°)-L4*sin(α3)
α3＝arcsin((L1*sin(α1)+L2*sin(180°-α1-83.5°)+L3*sin(180°-α1-α2+6.5°)-H30))/L4
α4＝α1+α2-6.5°-α3
α5＝90°-α3+α6
and calculating to obtain a thigh angle alpha 3, a knee angle alpha 4 and a trunk angle alpha 5 so as to adjust the posture of the human body.
3. A method of calibrating an accelerator pedal and brake pedal arrangement as claimed in claim 1, wherein: and in the step S2, in the process of initially determining the front distance of the driver, setting the front distance range of the driver to be 5-7 m.
4. A method of calibrating an accelerator pedal and brake pedal arrangement as claimed in claim 3, wherein: in the step S2, the specific step of making the driver sight line according to the front face model and the ground line of the vehicle type is: and a Z-direction straight line is made to pass through an X plane and a Z plane of the whole vehicle and tangent to the front bumper, the straight line translates forwards and is intersected with the ground line to obtain an intersection point A, and the straight line passing through the A point and tangent to the front cover is a driver view line.
5. A method of calibrating an accelerator pedal and brake pedal arrangement as set forth in claim 1, wherein: and in the step S3, before the driver steps on the accelerator pedal and the brake pedal, determining the travel and the heel point of the seat slide rail according to the vehicle height plan, and controlling the height difference range of the accelerator pedal and the brake pedal to be as follows: 38-45mm, the arrangement range of the central point of the brake pedal in the Y direction of the whole vehicle coordinate system is as follows: 0-55mm, the arrangement range of the central point or the stress point of the accelerator pedal in the Y direction of the whole vehicle coordinate system is as follows: 165-195mm.
6. A method of calibrating an accelerator pedal and brake pedal arrangement as set forth in claim 5, wherein: in the step S3, a constraint command is used in CATIA software to constrain the angles of all joints, the foot, the trunk angle alpha 5, the knee angle alpha 4 and the thigh angle alpha 3 are adjusted according to a set floor angle alpha 1, an ankle angle alpha 2, a sitting height H30 and a backrest angle alpha 6, so that the position and the angle of the accelerator pedal are adjusted, when the accelerator pedal meets the condition that the ankle angle alpha 2 of a human body template is 87 degrees, the foot is tangent to one third of the accelerator pedal, then the human body model and the heel point are relatively static, the foot is rotated, the position and the angle of the brake pedal are adjusted, and when the bottom surface of the foot is tangent to the brake pedal surface, the ankle angle alpha 2 is more than or equal to 70 degrees.
7. A method of calibrating an accelerator pedal and brake pedal arrangement as claimed in claim 6, wherein: in the step S3, when the full stroke of the accelerator pedal and the automatic pedal initial position reach one-half of the full stroke, the range of motion of the ankle angle α 2 is: 70-100 degrees, and the knee angle alpha 4 is in the range of 95-135 degreesThe range of motion of the torso angle α 5 is: 95-120 degrees, and the center point of the brake pedal and the center point or the stress point of the accelerator pedal are arranged at 5 th And 95 th In the middle of the pedal point.
CN202211011008.9A 2022-08-23 2022-08-23 Method for checking arrangement of accelerator pedal and brake pedal Pending CN115422655A (en)

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CN202211011008.9A CN115422655A (en) 2022-08-23 2022-08-23 Method for checking arrangement of accelerator pedal and brake pedal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202211011008.9A CN115422655A (en) 2022-08-23 2022-08-23 Method for checking arrangement of accelerator pedal and brake pedal

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CN115422655A true CN115422655A (en) 2022-12-02

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CN202211011008.9A Pending CN115422655A (en) 2022-08-23 2022-08-23 Method for checking arrangement of accelerator pedal and brake pedal

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