DE2824613A1 - Plastics bumper for motor car - comprises flexible carrier, deformable polyethylene wires of circular cross=section, PVC-coated polyester envelope and polyurethane corners - Google Patents

Abstract

Plastics bumper for motor cars comprises a suitably shaped relatively flexible carrier of sandwich construction; deformable polyethylene wires of circular cross-section; an envelope of PVC-coated polyester textile with sewn-on slide fastener closure; and corner pieces of polyurethane integral foam. The claimed article is less likely to cause relatively grave injury to persons on impact than conventional metal bumpers, and also reduces risk of minor damages to vehicles colliding with each other. The "sandwich" construction mentioned above is achieved by glueing the component plies with unsatd. polyester resin. The laminate may be reinforced with glas- polyester- or aromatic-polyamide-fibres.

Description

Plastic safety bumper

The invention relates to a plastic safety bumper for passenger vehicles.

The purpose of such a plastic safety bumper is to reduce it the severity of injury in pedestrian accidents and the avoidance of minor damage in collisions between passenger vehicles at low speeds.

Various bumper systems are currently in use (VDI-Gesellschaft Kunststofftechnik "plastics in car construction, VDI-Verlag GmbH Düsseldorf 1977). The The vast majority of these versions are unable to determine the severity of the injury to reduce pedestrian accidents and minor damage in collisions between Avoid low-speed passenger vehicles.

The invention is based on the problem of the severity of injury To reduce pedestrian accidents and avoid minor damage in collisions between passenger vehicles at low speeds.

This object is achieved according to the invention in that the plastic Safety bumper made of a flexible beam manufactured in a sandwich construction (Fig. 1, No. 1), made of deformable polyethylene cords (Fig. 1, No. 2), a sheath Made of PVC-coated polyester fabric (Fig.1, No. 3) with a sewn-on zipper (Fig. 1, No. 4) and bumper corners (Fig. 2, No. 5) made of polyurethane integral foam is composed.

The advantages that can be achieved with the invention are particular in that the severity of injury in pedestrian accidents is reduced and minor damage, those in the collision of passenger vehicles at low speeds arise, to be avoided. This is achieved by combining different plastics with appropriate work capacity and behavior in case of intermittent loads achieved.

An embodiment of the invention is shown in the drawings and is described in more detail below. 1 shows the plastic safety bumper in section, where No. 1 is a flexible beam made in a sandwich construction.

Rigid PVC foam strips form the supporting core of the bending beam.

The laminates are glued with unsaturated polyester resin, glass fibers, polyester fibers and aramid fibers serve as reinforcement materials. These materials and the appropriate processing methods create a flexible beam manufactured, which has a high strength with a low weight.

The No. 2 are polyethylene round cords, they form through their specific Properties the deformation path necessary for starting work.

No. 3 is a PVC-coated polyester fabric, which, as shown in Fig. 1 is shown, around the bending beam and the polyethylene round cords and is closed with a zipper (no.4).

No. 5 in FIG. 2 are polyurethane integral skin foam parts; those bumper corners are attached to the bending beam by suitable screw connections and form the side closure.

Claims (2)

Claims: X Plastic safety bumper for passenger vehicles characterized in that the plastic safety bumper consists of a sandwich construction manufactured bending beam (Fig. 1, No. 1), made of deformable polyethylene round cords (Fig. 1, No. 2), a jacket made of PVC-coated polyester fabric (Fig. 1, No. 3) with a sewn-on zipper (Fig. 1, No. 4) and bumper corners Polyurethane integral foam (Fig. 2, No. 5).