Design method of guide groove sealing structure based on double-sided contact between lip and glass
A technology of sealing structure and design method, applied in the direction of engine sealing, sealing device, calculation, etc., can solve problems such as large difference, repeated trial and error, manual calculation, etc.
Active Publication Date: 2017-11-07
TONGJI UNIV
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Problems solved by technology
Previous calculations of balance coefficients based on one-sided contact have ignored the influence of this actual assembly process
The above reasons lead to a large difference between the design results and the actual loading test, and there are deficiencies such as manual calculation, repeated trial and error, and a long cycle.
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[0027] The present invention will be described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] Such as Figure 1-6 As shown, the design method of the sealing structure of the guide groove based on the double-sided contact between the lip and the glass is characterized in that it includes the following steps:
[0029] (1) Take the width as L 0 The lower left corner of the guide groove is the origin to establish X-Y coordinates, the glass is inserted into the seal strip of the guide groove in the -Y direction to the assembly depth, and the glass is translated in the -X direction, from the unpressed state of the left lip (ie the small lip) to the pressed state In the dead state, extract the relative initial position L′ of the glass at each substep x in the X direction 2 The displacement P(x), and the clamping force of the big lip on the glass is F r (x), the clamping force of the small lip on the glass is F l (x), establish the...
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The invention relates to a method for designing a seal structure of a guide groove based on the double-sided contact between the lip and the glass, comprising: vertically inserting the glass from an initial position to a preset depth of the guide groove; When the distance is fixed, the clamping constraint force of the left and right lips on the glass is established, and the corresponding relationship between the horizontal force resultant force of the glass and the horizontal displacement is established; the equilibrium position of the glass in the guide groove is determined when the glass horizontal force resultant force is zero, and obtained The clamping constraint force of the large and small lips on the glass at the equilibrium position; the gap balance coefficient and the compressive load value of the lips on both sides are obtained when the resultant horizontal force of the glass is zero. Compared with the prior art, the present invention analyzes the rationality of the design of the sealing section of the guide groove based on the evaluation criteria of the gap balance coefficient when the glass is in the state of clamping constraint balance, and the corresponding compression load values of the lips on both sides, and then provides Targeted section optimization design provides feasible suggestions.
Description
technical field [0001] The invention relates to the field of automobile sealing structure design and manufacture, in particular to a method for designing a guide groove sealing structure based on the double-sided contact between a lip and a glass. Background technique [0002] The glass run channel is an important part of the body sealing system. It has a direct impact on the car quality indicators that customers clearly perceive, such as window lifting, dustproof and waterproof, and high-speed silence. The large lip and small lip are in close contact with the two sides of the glass respectively. Form a pair of clamping constraints with equal size and opposite directions, and form frictional resistance when the window moves. The guide channel sealing system requires a reasonable design of the geometric configuration of the large and small lips of the sealing section to form a suitable glass clamping force, and finally enable the window to move up and down smoothly in the gui...
Claims
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IPC IPC(8): B60J10/76G06F17/50
Inventor 朱文峰林佩剑
Owner TONGJI UNIV