| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a power steering device preventing degradation of the steering feeling caused by the effect of the rigidity of a hydraulic passage for connecting an oil pump to a power cylinder. <P>SOLUTION: Parts of first and second hydraulic passages 27 for respectively connecting both hydraulic chambers 11a of a pump unit 16 and a power cylinder 12 form low-rigidity passages 27c formed of flexible pipes 33 formed of synthetic rubber. The passage length L of the low-rigidity line 27c is set so that the apparent volume modulus of elasticity Ke of working oil in first and second hydraulic transmission routes 29 is ≥100 MPa and ≤300 MPa, respectively. <P>COPYRIGHT: (C)2009,JPO&INPIT |
