Abstract: A method of manufacturing a hollow drive shaft for a vehicle may include swaging one of a first hollow tube and a second hollow tube having a same diameter to reduce an outer diameter thereof and thus allow the swaged hollow tube to be assembled in a remaining hollow tube of the first hollow tube and the second hollow tube, assembling the hollow tube that is reduced in outer diameter in the remaining hollow tube, thereby forming a hollow shaft, and joining first and second stems to both sides of the hollow shaft, respectively.

Abstract: A propeller shaft with a locking device includes a locking device for selectively coupling an exterior hub and an interior hub thereof. The propeller shaft has a structure that enables sliding between the interior and exterior hubs including a spline portion while the locking device is released by the load during a collision.

Abstract: A hybrid propeller shaft may include a CFRP tube layer in which high-strength CFRP or high-elasticity CFRP, the high-strength CFRP, and the high-elasticity CFRP are laminated to form at least two layers while having different wrapping angles by a prepreg wrapping process method; and a protective layer which is formed on an outermost layer of the CFRP tube layer to protect the CFRP tube layer.

Abstract: A hybrid propeller shaft may include a CFRP tube layer in which high-strength CFRP or high-elasticity CFRP, the high-strength CFRP, and the high-elasticity CFRP are laminated to form at least two layers while having different wrapping angles by a prepreg wrapping process method; and a protective layer which is formed on an outermost layer of the CFRP tube layer to protect the CFRP tube layer.

Abstract: A center supporting device for a propeller shaft of a vehicle may include an inner bearing device configured to axially movably support a stub shaft, the stub shaft being connected between a front shaft and a rear shaft of the propeller shaft, an outer bearing device mounted outside the inner bearing device to axially rotatably support the stub shaft, and an insulator mounted in an elastically deformable manner between the outside of the outer bearing device and a bracket fixed to a vehicle body.

Abstract: A propeller shaft with a locking device is provided to that improve performance upon impact by reducing a collapse load generated during a collision. The propeller shaft with a locking device includes a locking device for selectively coupling an exterior hub and an interior hub thereof. The propeller shaft has a structure that enables sliding between the interior and exterior hubs including a spline portion while the locking device is released by the load during a collision.

Abstract: A method of manufacturing a hollow drive shaft for a vehicle may include swaging one of a first hollow tube and a second hollow tube having a same diameter to reduce an outer diameter thereof and thus allow the swaged hollow tube to be assembled in a remaining hollow tube of the first hollow tube and the second hollow tube, assembling the hollow tube that is reduced in outer diameter in the remaining hollow tube, thereby forming a hollow shaft, and joining first and second stems to both sides of the hollow shaft, respectively.

Abstract: A center supporting device for a propeller shaft of a vehicle may include an inner bearing device configured to axially movably support a stub shaft, the stub shaft being connected between a front shaft and a rear shaft of the propeller shaft, an outer bearing device mounted outside the inner bearing device to axially rotatably support the stub shaft, and an insulator mounted in an elastically deformable manner between the outside of the outer bearing device and a bracket fixed to a vehicle body.

Abstract: A bearing bracket which supports a drive shaft while allowing the drive shaft to be rotatable may include a first bracket which has a first head portion into which the drive shaft is fitted, and a first mounting portion which extends from one end of the first head portion and has an end fixed to a fixed body, and a second bracket which has a second head portion into which the drive shaft is fitted, and a second mounting portion which extends from one end of the second head portion and has an end fixed to the fixed body, in which the first head portion and the second head portion are coupled to each other so as to be in communication with each other so that the drive shaft penetrates the first head portion and the second head portion.

Abstract: An inner-shaft bearing bracket structure may include an inner-shaft that may be installed between a differential gear or a reduction gear connected to a motor or a engine for generating rotational power of a vehicle and a drive shaft for transmitting the rotational power to wheels of the vehicle in a vehicle width direction, bearings which wrap an outer peripheral surface of the inner-shaft and to which the inner-shaft may be rotatably coupled, and a bearing bracket which connects a pipe that houses and supports the bearings therein and a boss formed in the motor to project forward, wherein the bearing bracket may be disposed on a side surface of the boss and may be coupled by bolts in the vehicle width direction of the vehicle body.

Abstract: An inner shaft supporting apparatus of a vehicle power train may include a bracket coupled to a bearing, the bracket including a bearing coupling part, wherein an outer ring of the bearing may be seated in an inside of the bearing coupling part, and wherein an inner ring of the bearing may be press-fitted into to be integrally coupled to an inner shaft, and an upper coupling part and a lower coupling part disposed at upper and lower part thereof based on the bearing coupling part, respectively, wherein the upper coupling part and the lower coupling part may be fixedly coupled to a coupling part of the power train by a first bolt, and a separation preventing cover coupled to the bracket and the inner shaft to prevent the bearing from being separated from the bracket and an axial movement of the inner shaft integrally equipped with the bearing.

Abstract: A mounting structure of a drive-shaft may include a shaft, a housing, a spring guide slidably disposed inside the housing having one end facing the shaft, and a spring with one end supported by a spring guide and the other end supported by the housing, in which a transmission has a companion flange with a cup-shaped coupling portion at an end, so when the housing enters the coupling portion, an elastic force of the spring biases the housing into the coupling portion.

Abstract: A structure for mounting a bearing bracket is provided. The structure includes a supporting portion into which a drive shaft is fitted and a coupling portion which is enlarged from the supporting portion and is fastened by bolts to a fixing portion formed at a power train. The coupling portion has two or more apertures into which the bolts are inserted, and at least one enlarged portion that protrudes on a surface, which comes into contact with the fixing portion, to enlarge a length of each apertures, and the fixing portion has bolt bore opened to correspond to the apertures of the coupling portion, respectively, and an enlarged groove formed at the bolt bore where the enlarged portion enters and has an increased diameter to fit the enlarged portion into the enlarged groove.

Abstract: An inner shaft supporting apparatus of a vehicle power train may include a bracket coupled to a bearing, the bracket including a bearing coupling part, wherein an outer ring of the bearing may be seated in an inside of the bearing coupling part, and wherein an inner ring of the bearing may be press-fitted into to be integrally coupled to an inner shaft, and an upper coupling part and a lower coupling part disposed at upper and lower part thereof based on the bearing coupling part, respectively, wherein the upper coupling part and the lower coupling part may be fixedly coupled to a coupling part of the power train by a first bolt, and a separation preventing cover coupled to the bracket and the inner shaft to prevent the bearing from being separated from the bracket and an axial movement of the inner shaft integrally equipped with the bearing.

Abstract: A mounting structure of a drive-shaft includes: a shaft; a housing; a spring guide slidably disposed inside the housing having one end facing the shaft; and a spring with one end supported by a spring guide and the other end supported by the housing, in which a transmission has a companion flange with a cup-shaped coupling portion at an end, so when the housing enters the coupling portion, an elastic force of the spring biases the housing into the coupling portion. Since a fixing bolt is not used, it is possible to quickly assemble and disassemble the drive-shaft in maintenance.

Abstract: An inner-shaft bearing bracket structure may include an inner-shaft that may be installed between a differential gear or a reduction gear connected to a motor or a engine for generating rotational power of a vehicle and a drive shaft for transmitting the rotational power to wheels of the vehicle in a vehicle width direction, bearings which wrap an outer peripheral surface of the inner-shaft and to which the inner-shaft may be rotatably coupled, and a bearing bracket which connects a pipe that houses and supports the bearings therein and a boss formed in the motor to project forward, wherein the bearing bracket may be disposed on a side surface of the boss and may be coupled by bolts in the vehicle width direction of the vehicle body.

Abstract: A structure for mounting a bearing bracket is provided. The structure includes a supporting portion into which a drive shaft is fitted and a coupling portion which is enlarged from the supporting portion and is fastened by bolts to a fixing portion formed at a power train. The coupling portion has two or more apertures into which the bolts are inserted, and at least one enlarged portion that protrudes on a surface, which comes into contact with the fixing portion, to enlarge a length of each apertures, and the fixing portion has bolt bore opened to correspond to the apertures of the coupling portion, respectively, and an enlarged groove formed at the bolt bore where the enlarged portion enters and has an increased diameter to fit the enlarged portion into the enlarged groove.