A drive shaft assembly includes a drive shaft that includes a first cylindrical end having a first diameter, a cylindrical portion having a second diameter, and a second cylindrical end having the first diameter. A first distal end of the drive shaft includes a first distal spherical indentation. A first adapter cap includes a first tapered inner aperture and a first seal disposed within a first groove formed in a circumference of the first tapered inner aperture. The first tapered inner aperture is configured to receive the first cylindrical end of the drive shaft and the first seal forms a seal with the cylindrical portion of the drive shaft having the second diameter. A first adapter includes a first distal spherical indentation. A first distal spherical ball is removably attached to the first distal spherical indentation.

A telescopic shaft is provided. The telescopic shaft includes a first shaft including a first coupler having an inner circumferential surface including an external straight groove and an external inclination groove formed thereon, the external straight groove having a semi-circular cross section and being formed in parallel to a rotation axis and the external inclination groove having a semi-circular cross section, being inclined with respect to the external straight groove at a predetermined angle, and being shaped like a spiral, a second shaft including a second coupler inserted into the first coupler and having an outer circumferential surface including an internal straight groove and an internal inclination groove formed thereon, the internal straight groove having a semi-circular cross section and corresponding to the external straight groove and the internal inclination groove having a semi-circular cross section, being inclined in an opposite direction to the external inclination groove at a predetermined angle with respect to the internal straight groove, and being shaped like a spiral, and a plurality of balls arranged in a line in an axial direction between the external straight groove and the internal straight groove, one ball being arranged between the external inclination groove and the internal inclination groove, wherein the first shaft and the second shaft are coupled to extend and retract in an axial direction, thereby preventing play from occurring in a circumferential direction and preventing separation of balls.

A telescopic shaft is provided. The telescopic shaft includes a first shaft including a first coupler having an inner circumferential surface including an external straight groove and an external inclination groove formed thereon, the external straight groove having a semi-circular cross section and being formed in parallel to a rotation axis and the external inclination groove having a semi-circular cross section, being inclined with respect to the external straight groove at a predetermined angle, and being shaped like a spiral, a second shaft including a second coupler inserted into the first coupler and having an outer circumferential surface including an internal straight groove and an internal inclination groove formed thereon, the internal straight groove having a semi-circular cross section and corresponding to the external straight groove and the internal inclination groove having a semi-circular cross section, being inclined in an opposite direction to the external inclination groove at a predetermined angle with respect to the internal straight groove, and being shaped like a spiral, and a plurality of balls arranged in a line in an axial direction between the external straight groove and the internal straight groove, one ball being arranged between the external inclination groove and the internal inclination groove, wherein the first shaft and the second shaft are coupled to extend and retract in an axial direction, thereby preventing play from occurring in a circumferential direction and preventing separation of balls.

A flexure joint apparatus includes a first fixing unit, at least one first flexure extending from the first fixing unit, and a connection member having a first head elastically supported by the at least one first flexure.

A flexure joint apparatus includes a first fixing unit, at least one first flexure extending from the first fixing unit, and a connection member having a first head elastically supported by the at least one first flexure.

A constant velocity joint for a vehicle includes: an axle housing fixed to a knuckle by a hub bearing; a joint assembly inserted into an inner diameter portion of the axle housing and configured to transmit power from a shaft to the axle housing through a plurality of joint balls; an extension portion formed by deforming an end portion of the axle housing on an inward side of a vehicle body to extend in a radial direction of the axle housing so as to provide a pressing force to an inner race of the hub bearing in an axial direction of the axle housing; and a boot having one side surrounding an outer side of the extension portion to be coupled to the extension portion so as to form a restraining force between the extension portion and the boot in the axial direction.

A constant velocity joint for a vehicle includes: an axle housing fixed to a knuckle by a hub bearing; a joint assembly inserted into an inner diameter portion of the axle housing and configured to transmit power from a shaft to the axle housing through a plurality of joint balls; an extension portion formed by deforming an end portion of the axle housing on an inward side of a vehicle body to extend in a radial direction of the axle housing so as to provide a pressing force to an inner race of the hub bearing in an axial direction of the axle housing; and a boot having one side surrounding an outer side of the extension portion to be coupled to the extension portion so as to form a restraining force between the extension portion and the boot in the axial direction.

A dual plunging constant velocity (CV) drive shaft is provided for communicating rotational forces from a transaxle to a drive wheel of a vehicle. The dual plunging CV drive shaft comprises a drive shaft that transfers torque from the transaxle to the drive wheel. An inboard plunging CV joint is coupled between the transaxle and the drive shaft, and an outboard plunging CV joint is coupled between the drive shaft and the drive wheel. The inboard and outboard plunging CV joints each comprises an elongate housing that receives a CV joint coupled with the drive shaft. The inboard and outboard plunging CV joints communicate rotational forces from the transaxle to the drive wheel during vertical pivoting of a trailing arm coupled with the outboard plunging CV joint. The elongate housings allow the drive shaft to “float” longitudinally, as needed, during extreme pivoting motion of the suspension.

A dual plunging constant velocity (CV) drive shaft is provided for communicating rotational forces from a transaxle to a drive wheel of a vehicle. The dual plunging CV drive shaft comprises a drive shaft that transfers torque from the transaxle to the drive wheel. An inboard plunging CV joint is coupled between the transaxle and the drive shaft, and an outboard plunging CV joint is coupled between the drive shaft and the drive wheel. The inboard and outboard plunging CV joints each comprises an elongate housing that receives a CV joint coupled with the drive shaft. The inboard and outboard plunging CV joints communicate rotational forces from the transaxle to the drive wheel during vertical pivoting of a trailing arm coupled with the outboard plunging CV joint. The elongate housings allow the drive shaft to “float” longitudinally, as needed, during extreme pivoting motion of the suspension.

A dual plunging constant velocity (CV) drive shaft is provided for communicating rotational forces from a transaxle to a drive wheel of a vehicle. The dual plunging CV drive shaft comprises a drive shaft that transfers torque from the transaxle to the drive wheel. An inboard plunging CV joint is coupled between the transaxle and the drive shaft, and an outboard plunging CV joint is coupled between the drive shaft and the drive wheel. The inboard and outboard plunging CV joints each comprises an elongate housing that receives a CV joint coupled with the drive shaft. The inboard and outboard plunging CV joints communicate rotational forces from the transaxle to the drive wheel during vertical pivoting of a trailing arm coupled with the outboard plunging CV joint. The elongate housings allow the drive shaft to “float” longitudinally, as needed, during extreme pivoting motion of the suspension.