An automobile back door electric stay bar torque optimization method

A technology for automobile back doors and electric struts, applied in design optimization/simulation, electrical digital data processing, instruments, etc., can solve problems such as poor performance of electric struts, and achieve the effect of improving performance and improving design capabilities

Active Publication Date: 2019-04-23
柳州力通汽车科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a method for optimizing the torque of the electric strut of the back door of the automobile, which can solve the problem of poor performance of the electric strut of the back door of the existing automobile

Method used

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  • An automobile back door electric stay bar torque optimization method
  • An automobile back door electric stay bar torque optimization method
  • An automobile back door electric stay bar torque optimization method

Examples

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Embodiment Construction

[0020] The present invention will be described in further detail below in conjunction with accompanying drawing embodiment:

[0021] figure 1 The shown method for optimizing the torque of the electric strut for the back door of the automobile includes the following steps:

[0022] Step S1: The car model optimized in this embodiment is the V302 car model, and the layout of the strut installation points of this car model is preset;

[0023] Step S2: Use the vehicle model parameters to establish a mechanical model of the car's back door hovering, and calculate the moment arm of the center of gravity of the back door to the center of rotation of the back door hinge and the moment arm of the strut to the center of rotation of the back door hinge; the calculation formula is:

[0024] L 背 =X M -X O

[0025]

[0026] Among them, L 背 is the moment arm between the center of gravity of the back door and the center of rotation of the back door hinge, L 撑 The moment arm of the su...

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Abstract

The invention discloses an automobile back door electric stay bar moment optimization method, and relates to the technical field of automobile part design. The method comprises the following steps ofdetermining a vehicle type, and presetting a stay bar installation point layout; establishing a mechanical model for hovering the back door of the automobile by utilizing the automobile type parameters; iteratively calculating the axial force required by the stay bars at different angles in the opening and closing process of the automobile back door through a stay bar axial force calculation principle formula; designing parameters of the spring in the stay bar according to the calculated data, wherein the designed parameters of the spring need to meet the requirement for reducing the maximum stress attenuation of the spring; judging whether the designed spring force value meets the supporting rod force value requirement of suspension of the automobile back door or not, namely that the dooropening reference force is smaller than the supporting rod axial force and smaller than the door closing reference force; if yes, directly determining an optimization parameter; and if not, adjustingthe coordinates of the connecting point A of the stay bar and the automobile body and the connecting point B of the stay bar and the automobile door, and recalculating to obtain the axial force of the stay bar to be matched with the designed spring parameters. According to the present invention, the problem that an existing automobile back door electric supporting rod is poor in performance is solved.

Description

technical field [0001] The invention relates to the technical field of auto parts design, in particular to a method for optimizing the torque of an electric strut for an automobile back door. Background technique [0002] The automobile back door strut is connected between the back door and the vehicle body, used for opening and closing the back door, and supports the actuator of the back door when the back door is in the open state. Car back door struts are generally used to open and close the car back door from up and down. The back door is linked to the roof of the vehicle body through the back door hinge, supported by the strut and rotated around the hinge to achieve the purpose of opening and closing up and down. Automobile back door struts include mechanical struts and electric struts. At present, electric struts have gradually replaced mechanical struts. Existing electric struts generally include a rod body composed of an inner rod sleeve and an outer rod sleeve, and...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
CPCG06F30/15G06F30/20
Inventor 李峰李旭明
Owner 柳州力通汽车科技有限公司
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