Fixing structure of fiber cover surface and sound absorbing component for vehicle

Abstract

The invention relates to a fixing structure of fiber cover to integrate the cover fiber as non-woven cover and the resin molded product, which will not generate surface defects as convex-concave on the surface of resin molded product, and it can reduce the processing time and simplifying the processing device. Wherein, the decoration (10) on the side of luggage case is processed by melting the fiber cover as non-woven cover (30) and the inner surface of decoration (20). It uses the sharp convex rib (52) on the processing surface (51) of ultrasonic horn (50) to form the melting part (4) of non-woven cover (3) on the plane melting surface (41) to inserted into the V-shape groove (42) inside the resin molded product. The invention can simply inserted the fiber of non-woven cover (30) into resin molded product (20) to generate fixing effect and form the V-shape groove (42) of resin molded product in short time to improve the operation availability and appearance.

Description

Technical field [0001] The present invention relates to a fixing structure of a fibrous cover surface, especially when the fibrous cover surface is integrated with a resin molded product made of thermoplastic resin by ultrasonic welding processing, a strong bonding strength can be obtained by a short time welding processing The fixed structure of the fibrous cover surface. Background technique [0002] Generally, interior trims made of resin molded products are installed on the interior surface side of the car body panel using an installation mechanism such as a clip, and on the interior surface side of the body panel of these interior trims, such as Picture 12 As shown, the sound-absorbing member 2 is adhered and fixed to the inner surface of the interior 1 by means of the adhesive 3, and the sound-absorbing member 2 prevents the noise from outside the vehicle from being transmitted into the vehicle interior, thereby forming a structure that can improve the quietness of the veh...

AI Technical Summary

Problems solved by technology

[0006] However, since the sound-absorbing member 2 is ultrasonically welded and processed on the interior 1 using the ultrasonic horn 4 having the concave-convex surface 4a as the processed surface, it is necessary to apply a large pressure to the ultrasonic horn 4 so that the interior 1 Ultrasonic processing is performed to form a plurality of recesses with a depth of 1 to 5 mm on the interface with the sound-absorbing member 2, so the cylinder capacity of the press for applying pressure to the ultrasonic horn 4 increases, and the processing time increases, resulting in equipment costs. The main reasons for the decrease in production performance are the increase of

In addition, defects in appearance such as burrs and unevenness are likely to occur on the product surface of the interior 1 in connection with the formation of deep unevenness in the welded part, and it is considered that there is a disadvantage in that the designability is reduced at the same time.

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