GB/T 43402-2023 PDF in English
GB/T 43402-2023 (GB/T43402-2023, GBT 43402-2023, GBT43402-2023)
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Passenger cars -- Driver hand-control reach
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GB/T 43402-2023: PDF in English (GBT 43402-2023) GB/T 43402-2023
GB
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
ICS 43.020
CCS T 40
Passenger Cars - Driver Hand-control Reach
(ISO 3958:1996, MOD)
ISSUED ON: NOVEMBER 27, 2023
IMPLEMENTED ON: MARCH 1, 2024
Issued by: State Administration for Market Regulation;
Standardization Administration of the People’s Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Terms and Definitions ... 4
4 General Requirements ... 8
Appendix A (informative) A Comparison of Structural No. between This Document and
ISO 3958:1996 ... 10
Appendix B (informative) Technical Differences between This Document and ISO
3958:1996 and the Causes for These Differences ... 11
Appendix C (informative) Verification Process ... 13
Appendix D (normative) Hand-reach Table ... 15
Passenger Cars - Driver Hand-control Reach
1 Scope
This document specifies the boundaries of hand-control areas accessible to groups of drivers
with different male to female ratios.
This document is applicable to Category M1 vehicles with H30 value between 127 mm ~ 405
mm and H17 value between 530 mm ~ 838 mm.
2 Normative References
The contents of the following documents constitute indispensable clauses of this document
through the normative references in the text. In terms of references with a specified date, only
versions with a specified date are applicable to this document. In terms of references without a
specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 12673 Motor Vehicle Main Dimensions Measurement Method
3 Terms and Definitions
What is defined in GB/T 12673, and the following terms and definitions are applicable to this
document.
3.1 vehicle coordinate system
It consists of three interrelated perpendicular orthogonal planes and is used to determine the
positional relations among planes, axes and points.
NOTE: see Figure 1.
The design H point position set by the manufacturer, specifically designated as R point or SgRP,
and satisfy all the following requirements:
a) The basic datum point used to establish occupant adjustment tools and dimensions;
b) Simulate the hinge center position of the human trunk and thigh;
c) With coordinates established relative to the structure of the vehicle being designed;
d) The H point at the rearmost position of each designated seating position or the normal
driving and seating position specified by the manufacturer is established. It takes into
account all adjustment states of the seat, including horizontal, vertical and tilting, but
seat movement for non-normal driving and riding purposes is not included.
[source: GB/T 12673-2019, 3.2.3]
3.6 accelerator heel point; AHP
When the ankle angle is 87, and the shoe is placed on the uncompressed accelerator pedal
plane, the intersection of the heel of the shoe and the compressed floor covering.
NOTE: if the intersection of the shoe and the lateral support does not cause the AHP and BOFRP
to shift, then, the lateral position (the Y coordinate) is the same as the BOFRP.
[source: GB/T 12673-2019, 3.3.10]
3.7 center plane of occupant
C/PO
The Y coordinate plane of each designated riding position R-point.
NOTE: for single seats, it generally refers to the center plane of the seats. For bench seats, the
center plane of occupant is specified by the manufacturer.
[source: GB/T 12673-2019, 3.3.16, modified]
3.8 general package factor
A single index value that characterizes the spatial position of the driver of a specific vehicle
(see Formula 1).
NOTE: G is a comprehensive variable that provides a quantitative indicator of the geometric
structure of the driver’s workspace. It is calculated by substituting the main dimensions
(see Figure 2) of the vehicle seat configuration into Formula (1), and the unit is (mm).
Appendix C
(informative)
Verification Process
C.1 Determination of Reference Origin
Position the reference origin at R-point of the vehicle seat.
C.2 Determination of Datum Plane
In accordance with a set of orthogonal datum planes, position the hand-reach envelope inside
the vehicle. The orthogonal datum planes are the X datum plane passing through R-point, the
plane parallel to the Y datum plane and passing through R-point, and the Z datum plane passing
through the R-point.
C.3 Selection of Hand-reach Table to be Used
Explicitly describe the dimensions of the geometric structure of the vehicle seat configuration
and calculate the value of the general package factor G defined in 3.8. In accordance with the
value of the general package factor G, the type of torso restraint and the male-female mix ratio,
select the hand-reach table from Appendix D that is suitable for the vehicle and the designated
driver group.
C.4 Determination of Whether the Control is within Reach
Method 1: in accordance with the following steps, respectively draw the hand-reach envelope
on the left side of C/PO and the right side of C/PO.
a) Based on the reference origin, position the horizontal angle as 30, the vertical angle
as 0 and the radius as the coordinate point of corresponding values in the hand-reach
table. Along the vertical direction, successively position the coordinate points upward
and downward when the vertical angle is 15, 15, 30, 45 and 60;
b) In accordance with the above steps, successively position the coordinate points when
the horizontal angle is 45, 60, 75 and 90, and the vertical angle is 15, 0, 15,
30, 45 and 60;
c) Fit the coordinate points at the same horizontal angle to a straight line, fit the
uppermost point in the Z direction to a straight line, and fit the bottommost point in
the Z direction to a straight line;
d) Fit all straight lines into a curved surface. Thus, the hand-reach envelope is obtained.
The deviation of the surface from the values in the Table does not exceed 1 mm.
If the geometric center of the surface of the control (in a normal or static state) closest to the
driver is tangent to or inside the hand-reach envelope, then, it means that the control is within
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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