Telescopic shaft for motor vehicle steering
A steering shaft and telescopic shaft technology, applied in the steering column, steering control mounted on the car, steering control, etc., can solve the problems of increased sliding resistance, peeling or wear, unevenness, etc., and prevent the sliding resistance from increasing. Or wear, prevent play, stabilize sliding load effects
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[0036] FIG. 1A is a side view and FIG. 1B is a perspective view of a telescopic shaft for vehicle steering according to a first embodiment of the present invention. figure 2 It is a cross-sectional view along the line A-A in FIG. 1A.
[0037] As shown in FIGS. 1A and 1B , a telescopic shaft for vehicle steering (hereinafter referred to as "telescopic shaft") includes a male shaft 1 and a female shaft 2 that are mutually non-rotatable but mutually slidable and fitted together.
[0038] Such as figure 2 As shown, three substantially arc-shaped (arc-shaped) grooves 3 , 4 , 4 extending in the axial direction are arranged at equal intervals of 120° in the circumferential direction on the outer peripheral surface of the male shaft 1 . Correspondingly, three substantially arched grooves 5 , 6 , 6 extending in the axial direction are arranged at equal intervals of 120° along the circumferential direction on the inner peripheral surface of the female shaft 2 . The axial grooves 3, 5 ...
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