Patent ID: 7690662

Claim:
A strut suspension device which comprises a strut ( 7 ), an insulator ( 3 ) supporting an upper end of the strut ( 7 ) and mounted on a vehicle body ( 1 ), an upper seat ( 5 ) arranged on a lower face of the vehicle body ( 1 ), a support member ( 16 ) and a bearing ( 4 ) interposed between the upper seat ( 5 ) and the lower face of the vehicle body ( 1 ), a lower seat ( 8 ) fixed to said strut ( 7 ), a compression coil spring ( 6 ) arranged around the strut ( 7 ) between the upper seat ( 5 ) and the lower seat ( 8 ), a first angle adjusting member ( 10 ) integrally formed on the support member ( 16 ), which contacts with the base of the insulator ( 3 ) and is fixed to the lower face of the vehicle body ( 1 ), and a second angle adjusting member ( 11 ) integrally formed with the upper seat ( 5 ), wherein the thickness of said first angle adjusting member ( 10 ) is greater on an inner side than on an outer side in a width direction of the vehicle body ( 1 ) to mount the bearing ( 4 ) on the upper seat ( 5 ) in an inclined fashion with an angle and said second angle adjusting member ( 11 ) is disposed below the bearing ( 4 ) on the outer side in the width direction of the vehicle body ( 1 ) to mount the upper seat ( 5 ) in such a fashion that a plane containing the upper seat ( 5 ) on the outer side is downwardly inclined relative to a plane containing the upper seat ( 5 ) on the inner side crossing a kingpin axis ( 9 ) roughly at a right angle in the width direction of the vehicle body ( 1 ), whereby the bearing is mounted on the upper seat ( 5 ) in an inclined fashion and causes the kingpin axis ( 9 ) and the bearing central axis to approximately coincide so that no rotational moment is generated about the kingpin axis ( 9 ), the device supporting the vehicle body ( 1 ) by means of the strut ( 7 ) and is capable of turning about the kingpin axis ( 9 ).