| 摘要 |
1,274,420. Change-speed control; levers. GENERAL MOTORS CORP. 19 April, 1971 [27 Jan., 1970], No. 20136/71. Headings F2D and F2K. A gear shift or automatic selector lever 15 for manual or automatic transmissions comprises a one-piece plastics upper lever member 19 resiliently mounted by rubber or plastics damper blocks 23, 24 on a metal lower lever member 17 whith extends into the gear box housing extension (12) (Fig. 1, not shown), the plastics upper lever member 19 being insensitive to high temperatures generated in the gear-box and transmitted to the metal lower lever member 17. The onepiece plastics upper lever member 19 may be produced either by injection-moulding or by extrusion and may be of glass fibre-reinforced polyamide plastics or of acrylonitrile-butadienestyrene plastics, and be covered with a resilient surface layer 9 of soft elastic polyvinyl chloride, and may be provided either entirely or partially with a finely grained coloured finish of slight surface roughness to impart a leather-like appearance to ensure a better grip. A decorative member 35, bearing for example the gear shift pattern may be snapped or otherwise fitted into a hollow recess in the integral knob 20 (Figs. 3 and 4) and serve to retain a vibration-damper lead weight 44 in vibration free engagement with a frusto-conical internal surface of the knob 20. In Fig. 5, a spring loaded reverse blocker pressbutton 45 is additionally incorporated in the knob 20, the press-button operating the reverse blocker via a control rod 46 extending downward through the lever assembly. |
