Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1) .

Abstract: A power transmission shaft includes: a bearing including a cylindrical portion, an internal spline portion, and an internal spline side annular groove including a bottom surface, and a first side wall and a second side wall, the first side wall which includes a first inclination surface inclined with respect to the rotation axis of the shaft portion, and on which the circlip is abutted in a state where a radius of the circlip is decreased within the internal spline side annular groove, and the second side wall on which the circlip is abutted in the state where the radius of the circlip is decreased within the internal spline side annular groove.

Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).

Abstract: A propeller shaft as a power transmission shaft is provided between vehicle-side first second shaft parts, and a first tube as a first shaft member is connected to the first shaft part through a first joint member and to the second shaft part through a second joint member. The first tube is connected to the first joint member through a first collar member and to the second joint member through a second collar member. The first collar member includes a first main body part exposed from a first end portion of the first tube, and a first insertion part inserted into the inside of the first end portion. In at least the first collar member, the maximum value of the outer diameter of the first main body part is set to be no greater than the maximum value of the outer diameter of the first insertion part.

Abstract: A power transmission shaft is interposed between a first shaft section and a second shaft section. The power transmission shaft comprises: a cylindrical section rotated integrally with a shaft section and formed cylindrically; a through hole disposed in the cylindrical section and penetrated radially with respect to a rotational axial line, each of a pair of vehicle side rotational shaft sections having an engagement groove disposed on an outer peripheral side of the pair of vehicle side rotational shaft sections and extended in a direction around the rotational axial line and the engagement groove being exposed from the through hole; and a retaining ring (circlip) disposed to enclose at least a portion of the outer peripheral side of the cylindrical section, a portion of the retaining ring being inserted into the through hole from the outer peripheral side of the cylindrical section and being engaged with the engagement groove.

Abstract: A propeller shaft as a power transmission shaft is provided between vehicle-side first second shaft parts, and a first tube as a first shaft member is connected to the first shaft part through a first joint member and to the second shaft part through a second joint member. The first tube is connected to the first joint member through a first collar member and to the second joint member through a second collar member. The first collar member includes a first main body part exposed from a first end portion of the first tube, and a first insertion part inserted into the inside of the first end portion. In at least the first collar member, the maximum value of the outer diameter of the first main body part is set to be no greater than the maximum value of the outer diameter of the first insertion part.

Abstract: A power transmission shaft includes: a bearing including a cylindrical portion, an internal spline portion, and an internal spline side annular groove including a bottom surface, and a first side wall and a second side wall, the first side wall which includes a first inclination surface inclined with respect to the rotation axis of the shaft portion, and on which the circlip is abutted in a state where a radius of the circlip is decreased within the internal spline side annular groove, and the second side wall on which the circlip is abutted in the state where the radius of the circlip is decreased within the internal spline side annular groove.

Abstract: A propeller shaft (1) that is a power transmission shaft has a shaft member (2) as a tubular body made of iron-based metal and a balance weight (3) made of iron-based metal and welded to an outer peripheral surface of this shaft member (2). At least a part of the balance weight (3) of the propeller shaft (1) is covered with a sacrificial metal coating (4) made of sacrificial corrosion prevention material that contains metal whose ionization tendency is higher than that of metal forming the shaft member (2). With this, it is possible to suppress local progression of corrosion at a periphery of the balance weight (3) and improve durability of the propeller shaft (1).

Abstract: A power transmission shaft comprises a shaft unit interposed between first and second shafts; an engaged portion provided on one end of the second shaft and having an annular stepped part provided between a smaller diameter portion and a larger diameter portion; and an engaging portion provided on one end of the shaft unit and joinable with the engaged portion to rotate together about a common rotation axis, wherein the engaging portion comprises a cylindrical base portion that rotates together with the shaft unit, an elastically shrinkable cylindrical portion that is provided on one axial end of the cylindrical base portion to project toward the engaged portion and catching pawls that are provided by the elastically shrinkable cylindrical portion and latchingly engageable with the annular stepped part when the engaged portion and the engaging portion are coaxially arranged and joined with each other.

Abstract: Apparatus, such as a propeller shaft, includes an outer circumferential portion or outer race to rotate as a unit with an internal shaft (serving as the propeller shaft), an inner circumferential member or inner race to rotate as a unit with an external shaft and a plurality of balls disposed between the outer race and inner race, for transmitting rotation therebetween. A sleeve rotating as a unit with the inner race includes an inside cavity for receiving the external shaft. The sleeve is coated with a coating formed on an inside circumferential surface.

Abstract: A propeller shaft includes a shaft section connected between an input shaft and an output shaft via respective constant velocity joints, wherein the input shaft is connected to a drive source of a vehicle, and the output shaft is connected to driving wheels. The constant velocity joint includes a circlip-restricting surface to engage with a circlip provided in an outer peripheral surface of the input or output shaft, for restricting movement of the first or second shaft in an axial direction. The circlip-restricting surface is implemented by a first inclined surface and a second inclined surface, wherein the second inclined surface is closer to a rotational axis of the shaft section, and wherein the first inclined surface has an acute angle with respect to the axial direction, and the second inclined surface has a smaller angle with respect to the axial direction.

Abstract: The first constant-velocity joint has an inner ring member, an outer ring member housing the inner ring member, and balls, which are installed in raceway grooves formed at prescribed intervals in a circumferential direction in the outer ring member and which extend along an axial direction, for transmitting rotational torque between the inner ring member and the outer ring member. Furthermore, the constant-velocity joint is formed so that one of the inner ring member and the outer ring member connects to an attaching member installed to a vehicle side with a spline, and so that the other of them connects to a power transmission shaft. In outside wall of the outer ring member, an engagement groove is formed so as to engage with an engagement member applied to connection or release thereof in a range avoiding positions corresponding to the raceway grooves in an axial direction or a circumferential direction.

Abstract: Disclosed is a propeller shaft including a shaft portion; a joint portion provided between the shaft portion and a rotating shaft; a sleeve portion provided at the joint portion and having an inner peripheral side for receiving therein the rotating shaft; a through hole formed through a circumferential range of the sleeve portion, the through hole being opposed in a radial direction of the sleeve portion to an engaging groove formed on an outer peripheral side of the rotating shaft in a condition that the sleeve portion receives therein the rotating shaft; and a circlip provided on an outer peripheral side of the sleeve portion, the circlip being engaged in the engaging groove of the rotating shaft through the through hole of the sleeve portion.

Abstract: A power transmission shaft comprises a shaft unit interposed between first and second shafts; an engaged portion provided on one end of the second shaft and having an annular stepped part provided between a smaller diameter portion and a larger diameter portion; and an engaging portion provided on one end of the shaft unit and joinable with the engaged portion to rotate together about a common rotation axis, wherein the engaging portion comprises a cylindrical base portion that rotates together with the shaft unit, an elastically shrinkable cylindrical portion that is provided on one axial end of the cylindrical base portion to project toward the engaged portion and catching pawls that are provided by the elastically shrinkable cylindrical portion and latchingly engageable with the annular stepped part when the engaged portion and the engaging portion are coaxially arranged and joined with each other.

Abstract: A power transmission shaft is interposed between a first shaft section and a second shaft section. The power transmission shaft comprises: a cylindrical section rotated integrally with a shaft section and formed cylindrically; a through hole disposed in the cylindrical section and penetrated radially with respect to a rotational axial line, each of a pair of vehicle side rotational shaft sections having an engagement groove disposed on an outer peripheral side of the pair of vehicle side rotational shaft sections and extended in a direction around the rotational axial line and the engagement groove being exposed from the through hole; and a retaining ring (circlip) disposed to enclose at least a portion of the outer peripheral side of the cylindrical section, a portion of the retaining ring being inserted into the through hole from the outer peripheral side of the cylindrical section and being engaged with the engagement groove.

Abstract: A propeller shaft includes a shaft section connected between an input shaft and an output shaft via respective constant velocity joints, wherein the input shaft is connected to a drive source of a vehicle, and the output shaft is connected to driving wheels. The constant velocity joint includes a circlip-restricting surface to engage with a circlip provided in an outer peripheral surface of the input or output shaft, for restricting movement of the first or second shaft in an axial direction. The circlip-restricting surface is implemented by a first inclined surface and a second inclined surface, wherein the second inclined surface is closer to a rotational axis of the shaft section, and wherein the first inclined surface has an acute angle with respect to the axial direction, and the second inclined surface has a smaller angle with respect to the axial direction.

Abstract: Apparatus, such as a propeller shaft, includes an outer circumferential portion or outer race to rotate as a unit with an internal shaft (serving as the propeller shaft), an inner circumferential member or inner race to rotate as a unit with an external shaft and a plurality of balls disposed between the outer race and inner race, for transmitting rotation therebetween. A sleeve rotating as a unit with the inner race includes an inside cavity for receiving the external shaft. The sleeve is coated with a coating formed on an inside circumferential surface.

Abstract: The first constant-velocity joint has an inner ring member, an outer ring member housing the inner ring member, and balls, which are installed in raceway grooves formed at prescribed intervals in a circumferential direction in the outer ring member and which extend along an axial direction, for transmitting rotational torque between the inner ring member and the outer ring member. Furthermore, the constant-velocity joint is formed so that one of the inner ring member and the outer ring member connects to an attaching member installed to a vehicle side with a spline, and so that the other of them connects to a power transmission shaft. In outside wall of the outer ring member, an engagement groove is formed so as to engage with an engagement member applied to connection or release thereof in a range avoiding positions corresponding to the raceway grooves in an axial direction or a circumferential direction.

Abstract: Provided is a low-cost propeller shaft adaptable to multiple variations of input/output shafts. An input shaft 3 and a first constant-velocity joint 4a are connected through a first adapter member 6a. The first adapter member is equipped with: a male spline 42 formed on an outer peripheral surface of a small-diameter shaft section 39 and engaged with a female spline 20 of an inner-race member 11 in the first constant-velocity joint 4a; and a female spline 46 formed on an inner peripheral surface of a large-diameter shaft section 41 and engaged with a male spline 35 of the input shaft 3. As a result, by producing only this first adapter member 6a, it is possible to adapt to an input shaft 3 of a type in which the outer diameter, the length in the axial direction, or the shape of the male spline 35 differs from an existing type.

Abstract: A propeller shaft is proposed which comprises an outer cylindrical member formed with a sleeve portion that has a splined cylindrical inner wall with which a splined cylindrical outer wall of a shaft is engaged; an inner cylindrical member installed in the outer cylindrical member; a torque transmitting unit through which a torque is transmitted from the outer cylindrical member to the inner cylindrical member; and a connecting mechanism that, upon engagement of the splined cylindrical outer wall with the splined cylindrical inner wall, effects an axial and relative positioning between the shaft and the outer cylindrical member while establishing a detachable connection therebetween.