GB1396388A - Automobile bumper assembly - Google Patents

Abstract

1396388 Vehicle bumpers BRIDGESTONE TIRE KK 9 June 1972 [13 Aug 1971] 27160/72 Heading B7J In an automobile bumper assembly on an automobile body, comprising hollow tubular elastomer members 3 disposed between the automobile body 1 and fender bar 2, each member 3 has an area ratio, of the cross-sectional area S 1 of the member at right angles to its longitudinal axis l (Fig. 11) including its hollow-space 3a, divided by cross-sectional area S 2 of the hollow space 3a only, of between 1À44 and 4À0, and the members 3 consist of elastomeric material with a Shore A hardness of between 63 and 104 degrees. The members 3 may be of natural or synthetic rubber and the bar 2 may be of metal or a synthetic resin. The members 3 may extend with their axes I parallel to the longitudinal vertical central plane n, as in Figs. 1 and 2, or at an angle 0 thereto as in Figs. 11 and 12. Mounting rings 6 are provided at opposite ends of each member 3 and carry bolts 5 for attachment to mounting fixtures 4 on body 1 and bar 2. In alternative forms of elastomer member 3, a pair of wire rings (8), Fig. 2 (not shown), may be embedded in the opposite ends of the member and joined by fibrous reinforcing members (9) extending longitudinally of the member 3; or the member 3 may be divided into two subsections by an intermediate annular disc (10), Fig. 3 (not shown), at its longitudinal midpoint; or the member 3 may comprise two concentric elastomer cylinders, Fig. 4 (not shown); or the member 3 may be precompressed by a bolt (11), Fig. 5 (not shown), and nut connected between the two mounting rings 6. As shown in Fig. 14, a rod 13 is secured to the mounting ring 6 which is itself secured to fender bar 2, and the rod 13 extends through the hollow space 3a into a guide member 14 formed in the body 1 and containing bearings sleeves 15, 16 to slidably support the rod 13. In another form, Fig. 17, a hollow tube 13 extends from one mounting ring 6 to bar 2 and is guided by a rod 14, which can telescope therein and extends through the space 3a within member 3 to be secured to the other mounting ring 6 which is attached to body 1 at 6b.