| 摘要 |
1,207,095. Power-assisted steering mechanism. DAIMLER-BENZ A.G. 2 April, 1969 [3 April, 1968; 8 June, 1968], No. 17338/69. Heading B7H. Power-assisted steering mechanism for a motor vehicle includes flexible mechanical transmitting elements 5, 6 which transmit movements of the steering wheel 1 in each direction of operation and are of such dimensions that they can transmit the increased effort required in the event of failure of the power assistance. As shown, the steering wheel 1 is by through a deformable member 2 to a pinion 3 which meshes with a rack 4 connected through the flexible elements 5, 6 to a servo valve 7 arranged to control application of fluid pressure to a steering ram 10. The flexible elements 5, 6 may include a flexible band guided between balls spaced by cage strips along a flexible sheath as shown at A or they may include a series of balls in a flexible sheath as shown at B. In Fig. 2 (not shown), the servo valve is actuated through a lever by a connecting member which connects the flexible elements with an initial tension. Instead of actuating the servo valve through the flexible elements, it may be actuated in response to sideways or axial movement of the pinion or in response to deflection of resilient means connecting the flexible elements to the rack. |
