An air spring strut assembly includes a top cap with a metal flange overmolded within a plastic overmold housing. The metal flange carries structural loads through the top cap and the plastic overmold housing includes non-load bearing complex shapes ands surfaces. A shock absorber and bellows are attached to the top cap to complete the air spring strut assembly.

A top mount assembly includes an insulator comprising an upper plate, a lower plate, and a rubber bushing accommodated in an accommodation space defined between the upper plate and the lower plate; and a strut bearing comprising an upper housing, a lower housing, and a bearing interposed between the upper housing and the lower housing and configured to rotate the lower housing relative to the upper housing. The upper housing of the strut bearing may comprise an insulator mounting part formed on an upper portion of the upper housing and on which the insulator is mounted, the insulator mounting part may comprise a lower plate mounting part on which the lower plate of the insulator is mounted and an upper plate supporting part formed outside the lower plate mounting part, and the upper plate support part may be configured to support a lower surface of the upper plate.

In a strut bearing device, an upper spring sheet made of steel has a cylindrical part and a disc part. The cylindrical part has, at an upper part thereof, an engagement hole penetrated in a radial direction. A lower case of a strut bearing has a cylindrical member fitted along an inner peripheral surface of the upper part of the cylindrical part. The cylindrical member has, at its outer peripheral surface, an engagement projection that is engaged with an engagement hole. Relative movement of the upper spring sheet and the lower case in an axial direction and in a circumferential direction is restricted in a state where the engagement projection is engaged with the engagement hole.

A rotation induction device for a vehicle includes an upper case member, a lower case member, a center plate, and a friction reduction part. The upper case member has a piston rod disposed therethrough. The lower case member, disposed under the upper case member, has the piston rod disposed therethrough. The center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate, is configured to induce either one or both of the upper and lower case members to rotate. The friction reduction part, configured to reduce friction, is selectively disposed at a contact surface between the upper case member and the center plate, and a contact surface between the center plate and the lower case member. Each of the upper case member, the lower case member, and the center plate is composed of a synthetic resin material.

A strut assembly includes a piston rod of a shock absorber, an upper support of the shock absorber, a bearing, a spring and a buffer block, which are coaxially arranged. The upper support of the shock absorber has a first through hole, the bearing has a second through hole, and a portion of the upper support of the shock absorber is arranged in the second through hole, the buffer block has a third through hole, and one end of the piston rod of the shock absorber is located in the first through hole, the other end of the piston rod of the shock absorber passes through the third through hole, the buffer block is connected with the upper support of the shock absorber, the spring is sleeved around the piston rod of the shock absorber, and the spring is connected with the bearing. The present disclosure further provides a vehicle.

A spring guide includes: a main body portion of which a coil spring is placed on a vehicle side, the main body portion being formed of a resin material; and a covering portion that covers an anti-spring side of the main body portion opposite to the coil spring. The covering portion is formed of a material having a physical property different from that of the resin material forming the main body portion.

A rotation induction device for a vehicle, includes an upper case member, a lower case member, a center plate, and an inflow prevention part. The upper case member has a piston rod disposed therethrough. The lower case member, disposed under the upper case member, has the piston rod disposed therethrough. The center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate, is configured to induce either one or both of the upper and lower case members to rotate. The inflow prevention part, formed in the upper and lower case members, is configured to block the inflow of foreign matters. Each of the upper case member, the lower case member, and the center plate is composed of a synthetic resin material.

A rotation induction device for a vehicle includes an upper case member, a lower case member, a center plate, and a lubricant storage part. The upper case member has a piston rod disposed therethrough. The lower case member, disposed under the upper case member, has the piston rod disposed therethrough. The center plate, disposed between the upper and lower case members such that the piston rod passes through the center plate, is configured to induce either one or both of the upper and lower case members to rotate. The lubricant storage part is formed in the center plate and configured to store lubricant therein. Each of the upper case member, the lower case member, and the center plate is composed of a synthetic resin material.

An independent suspension system includes a wheel knuckle engaged with a wheel and configured to be rotated in response to a steering input; a motor assembly disposed at one end of the wheel knuckle and configured to rotate the wheel knuckle; an upper arm engaged with the motor assembly; a lower arm having a first end engaged with a vehicle body and a second end engaged with the wheel knuckle; a connection arm configured to be engaged with the upper arm; a rotation pin disposed at a connection portion between the upper arm and the connection arm to enable integral rotation of the upper arm and the connection arm; and a shock absorber disposed between the connection arm and the lower arm and engaged with the connection arm so as to be perpendicular to the connection arm.

An independent suspension system for a vehicle includes: a steering unit configured to be controlled to adjust the steering angle of a wheel, a shock absorber engaged with the wheel and configured to absorb impacts applied to the wheel and including a first shock absorber and a second shock absorber, each of which arranged in a forward-rearward direction on opposite side surfaces of the wheel, and a link unit disposed between the shock absorber and the steering unit in order to vary the distance between the wheel and the steering unit. The link unit includes a first upper arm disposed between the first shock absorber and the steering unit, a second upper arm disposed between the second shock absorber and the steering unit, and at least one ground clearance adjustment unit engaged with the first and second upper arms in order to vary the distance between the first and second upper arms.