Synthetic resin bumper assembly

Abstract

A bumper for a motorcar having a shock absorbing member made of a foamed synthetic resin attached to a front surface of a backup beam connected to left and right stays of a car body. The resultant assembly of those members is covered at its front, upper and lower surfaces with a synthetic resin facing member which is nearly in the form of a channel in section. The backup beam is formed out of fiber-reinforced synthetic resin and is a hollow beam member having depth which is comparatively large at its middle portion extending between the two stays and is comparatively small at its both end portions extending from the two stay connecting portions thereof to the terminal ends thereof. The shock absorbing member is formed so that the change in the depth thereof is in inverse relation to the foregoing change in the depth of the backup beam so that the depth of the entire resultant assembly may nearly constant. The backup beam can be made of a channel-shaped front shell member and a channel-shaped rear shell member which are joined together at their flanges to be formed into a hollow beam.

Dependencies are inferred from the claim text.