Automotive air bag cover and method of molding same

Details Automotive air bag cover and method of molding same Automotive air bag cover and method of molding same

1996-04-24

1998-06-09

Dickson, Paul N.

Land vehicles

Wheeled

Attachment

280732, B60R 2116

Patent

active

057623627

ABSTRACT:
An air bag cover (21) is provided which covers an air bag device and consists of a core layer (23) made of hard resin and a skin layer (22) made of soft resin. The air bag cover (21) has a lid (21a) cracked and opened by actuation of the air bag device. The lid (21a) has cracked-open portions (26) along which the lid (21a) is cracked by pressure generated when the air bag is inflated and a hinge portion (24) on which the lid (21a) is opened and by which the lid (21a) is held. The hinge portion (24) has hinge holes (22a) through which the soft resin of skin layer (22) flows onto the back surface of the core layer (23). A method of molding the air bag cover (21) takes first and second stages. In the first step, after a pair of molds are clamped, molten hard resin for a core layer (23) is injected into a cavity of one of the molds. The hard resin is cooled and hardened to form the core layer (23). In the second step, after the molds are opened, a core die component (35c) of the mold used in the first step is moved and brought into contact with a cavity die component (35b) of the other mold. Thereafter, molten soft resin for a skin layer (22) is injected into a space between the core layer (23) formed on the core die component (35c) and the cavity die component (35b) in order to form the skin layer (22).

REFERENCES:
patent: 5069477 (1991-12-01), Shiraki
patent: 5183289 (1993-02-01), Zeller et al.
patent: 5376461 (1994-12-01), Shiraki et al.
patent: 5458361 (1995-10-01), Gajewski

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