Abstract: A reducer of an electronic power steering apparatus is disclosed. The reducer of an electronic power steering apparatus aids the operation of a steering wheel by the driver by preventing a clearance from being caused by frictional wear between a worm and a worm wheel, by reducing rattle noise caused by backlash, and by minimizing the change in the clearance due to a change in torque.

Abstract: Disclosed is a reducer of an electric power steering apparatus. The disclosed reducer includes: a worm shaft bearing coupled with an end of the worm shaft's motor shaft coupling portion in such a manner that a ball coupled between an inner wheel and an outer wheel supports rotation of the worm shaft; and a first damper and a second damper which are tightly fitted in one side and the other side of the worm shaft bearing, respectively, while being insertedly-coupled with the worm shaft, so as to support the worm shaft and absorb a rattle noise transferred via the worm shaft, wherein each of the first damper and the second damper is provided with supporting plates at both sides thereof, and between the supporting plates, a damper made of an elastic material is coupled and formed.

Abstract: A slip joint of a steering apparatus for a vehicle, the slip joint including: an outer member having a plurality of first assembling recesses; an inner member being inserted within the outer member and having a plurality of second assembling recesses; and a slip bush, which is inserted between the outer member and the inner member and has mounting parts, into which balls and rollers are inserted, and elastic parts having one side cut out in an axial direction, each mounting part having a plurality of first mounting holes and a plurality of second mounting holes. Each elastic part transfers power while compensating for clearance even when the balls disposed between the inner member and the outer member of the slip joint are worn away so that a rattling noise generated due to clearance is removed, and steering stability and durability of the slip joint can be improved.

Abstract: A universal joint includes a tube having a hollow shape; a slip bush inserted into the tube; and a shaft assembled with the tube through the slip bush, wherein the slip bush includes power transmission parts, which are arranged along an circumferential surface of the slip bush in an axial direction and have pins positioned at centers of the power transmission parts and supports supporting both ends of each pin, and elastic parts, which are arranged along the circumferential surface of the slip bush while being spaced from the power transmission parts and have a section with a C-shape, which is formed in such a manner that a side portion is cut out in the axial direction. Therefore, strength and rigidity are improved, even when twist is generated in the universal joint, so that clearance and noise due to abrasion, pressing, etc. can be minimized.

Abstract: Universal joint having slip bush including a tube, a slip bush inserted into the tube, and a shaft inserted into and slidably engaged with the tube via the slip bush. The universal joint further includes: one or more rows of guide holes formed by perforating a circumferential wall of the slip bush, the rows being arranged in the longitudinal direction of the slip bush; one or more guide balls fitted in the guide holes, respectively; and one or more C-type parts longitudinally formed on the circumferential wall of the slip bush. When axial pressure is applied to the universal joint in a state in which rotational torque is applied to the universal joint, the guide balls fitted in the guide holes come into contact with the inner circumferential surface of the tube, thereby reducing sliding frictional force while producing rolling frictional force so that the universal joint can be smoothly collapsed.

Abstract: Disclosed is a reducer of an electric power steering apparatus. The disclosed reducer includes: a worm shaft bearing coupled with an end of the worm shaft's motor shaft coupling portion in such a manner that a ball coupled between an inner wheel and an outer wheel supports rotation of the worm shaft; and a first damper and a second damper which are tightly fitted in one side and the other side of the worm shaft bearing, respectively, while being insertedly-coupled with the worm shaft, so as to support the worm shaft and absorb a rattle noise transferred via the worm shaft, wherein each of the first damper and the second damper is provided with supporting plates at both sides thereof, and between the supporting plates, a damper made of an elastic material is coupled and formed.

Abstract: A reducer of an electronic power steering apparatus is disclosed. The reducer of an electronic power steering apparatus aids the operation of a steering wheel by the driver by preventing a clearance from being caused by frictional wear between a worm and a worm wheel, by reducing rattle noise caused by backlash, and by minimizing the change in the clearance due to a change in torque.

Abstract: Disclosed is a slip joint of a steering apparatus for a vehicle, the slip joint including: an outer member having a plurality of first assembling recesses; an inner member being inserted within the outer member and having a plurality of second assembling recesses; and a slip bush, which is inserted between the outer member and the inner member and has mounting parts, into which balls and rollers inserted, and elastic parts having one side cut out in an axial direction, each mounting part having a plurality of first mounting holes and a plurality of second mounting holes. Each elastic part transfers power while compensating for clearance even when the balls disposed between the inner member and the outer member of the slip joint are worn away so that a rattling noise generated due to clearance is removed, and steering stability and durability of the slip joint can be improved.

Abstract: A universal joint includes a tube having a hollow shape; a slip bush inserted into the tube; and a shaft assembled with the tube through the slip bush, wherein the slip bush includes power transmission parts, which are arranged along an circumferential surface of the slip bush in an axial direction and have pins positioned at centers of the power transmission parts and supports supporting both ends of each pin, and elastic parts, which are arranged along the circumferential surface of the slip bush while being spaced from the power transmission parts and have a section with a C-shape, which is formed in such a manner that a side portion is cut out in the axial direction. Therefore, strength and rigidity are improved, even when twist is generated in the universal joint, so that clearance and noise due to abrasion, pressing, etc. can be minimized.

Abstract: Disclosed is a universal joint including a tube, a slip bush inserted into the tube, and a shaft inserted into and slidably engaged with the tube via the slip bush. The universal joint further includes: one or more rows of guide holes formed by perforating a circumferential wall of the slip bush, the rows being arranged in the longitudinal direction of the slip bush; one or more guide balls fitted in the guide holes, respectively; and one or more C-type parts longitudinally formed on the circumferential wall of the slip bush. When axial pressure is applied to the universal joint in a state in which rotational torque is applied to the universal joint, the guide balls fitted in the guide holes come into contact with the inner circumferential surface of the tube, thereby reducing sliding frictional force while producing rolling frictional force so that the universal joint can be smoothly collapsed.