Automobile beltline portion sound-insulating structure and automobile door glass
A technology of door glass and waistline, applied to windshield, vehicle parts, windows, etc., can solve problems such as friction sound and achieve the effect of suppressing friction sound
Active Publication Date: 2019-05-21
AGC INC
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Problems solved by technology
At this time, the soundproof material moves while being in contact with the door panel and the sealing member, and there is also a problem of friction sound.
Method used
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Experimental program
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Effect test
Embodiment
[0108] Through the following experiments, the relationship between the coefficient of static friction and the friction sound related to the sound insulation structure (A) and the sound insulation structure (B) was determined.
[0109] [Sound insulation structure (A)]
[0110] As the viscoelastic components, five types of viscoelastic components (20mm×20mm, thickness 20mm) composed of polyurethanes (1) to (5) shown in Table 1 and the material (high-strength material: A panel test sample (70 mm×150 mm, thickness 0.7 mm) composed of a high-tensile steel plate) was measured for the static friction coefficient (A) by the method described above. In addition, the polyurethanes (1) to (5) are polyurethane molded articles in which the inside is a foam and the surface layer is made of a non-foam, which is produced as follows. In addition, the friction sound between the five types of viscoelastic members and the test plate generated during the measurement of the static friction coefficient (...
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Provided is an automobile beltline portion sound-insulating structure and automobile door glass used in the sound-insulating structure which improves the sound insulation state in an automobile to a high level when door glass is closed by suppressing intrusion of sound from outside the automobile via a beltline portion and occurrence of sound due to vibrations of the door glass itself, and which suppresses the sound of members that rub against each other while the door glass is being opened or closed. This automobile beltline portion sound-insulating structure comprises: an automobile door panel which has two panel boards facing each other and seal members in regions along the beltline of the facing surfaces of the panel boards; and a door glass which is disposed between the two panel boards in an openable and closable manner, and which has a door glass body and a viscoelastic member on the surface of the door glass body, the viscoelastic member sealing the gap between the panel boardsand the door glass body while abutting on the panel boards when the door glass is closed, the viscoelastic member having a static friction coefficient of 2.5 or less on the surface thereof which abuts on each of the panel boards.
Description
Technical field [0001] The present invention relates to a soundproof structure for a waistline portion of an automobile and an automobile door glass used for the soundproof structure. Background technique [0002] In the past, as one of the methods for improving the sound insulation in the automobile, a method of providing a sound insulation structure along the waistline of the automobile has been adopted. As such a sound insulation structure, for example, Patent Document 1 discloses a sound insulation structure that is attached to the lower end portions of the outer seal portion and inner seal portion of the door panel and the portion corresponding to the lower end portion of the door glass when the door glass is closed. One side is provided with a soundproof material, and the other side is provided with a protrusion that elastically contacts the soundproof material. [0003] When the door glass is closed, the sound insulation structure described in Patent Document 1 blocks the g...
Claims
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IPC IPC(8): B60J1/17
CPCB60J1/17B60J10/75B60J10/16B60J10/50B60J10/76B60J10/33
Inventor 山田大介
Owner AGC INC