Abstract: One end face of an outer roller is provided with an annular rib that protrudes radially inward and that retains an inner roller and rolling elements. The other end face-side portion of the outer roller is provided with an inner component retaining portion that retains the inner roller and the rolling elements. In a roller unit in which the inner roller and the rolling elements are retained in the outer roller by the rib and the inner component retaining portion, an inner peripheral face of the inner roller through which a tripod shaft portion is passed is provided with a tripod shaft portion insertion restricting portion that allows the tripod shaft portion to be passed through the inner roller only from an end face side of the roller unit, on which the rib of the outer roller is not provided.

Abstract: One end face of an outer roller is provided with an annular rib that protrudes radially inward and that retains an inner roller and rolling elements. The other end face-side portion of the outer roller is provided with an inner component retaining portion that retains the inner roller and the rolling elements. In a roller unit in which the inner roller and the rolling elements are retained in the outer roller by the rib and the inner component retaining portion, an inner peripheral face of the inner roller through which a tripod shaft portion is passed is provided with a tripod shaft portion insertion restricting portion that allows the tripod shaft portion to be passed through the inner roller only from an end face side of the roller unit, on which the rib of the outer roller is not provided.

Abstract: A sliding type tripod constant velocity joint includes a cage that supports the rolling elements such that the rolling elements circulate on an outer periphery of the intermediate member. The cage includes the first, second, third and fourth circulating paths having opening parts over an entire length in an outer peripheral side of the cage and widths of the opening parts of the third and fourth circulating paths are narrower than widths of the opening parts of the first and second circulating paths.

Abstract: A sliding type tripod constant velocity joint includes a cage that supports the rolling elements such that the rolling elements circulate on an outer periphery of the intermediate member. The cage includes the first, second, third and fourth circulating paths having opening parts over an entire length in an outer peripheral side of the cage and widths of the opening parts of the third and fourth circulating paths are narrower than widths of the opening parts of the first and second circulating paths.

Abstract: A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on both side surfaces and opposing the side surfaces of a corresponding one of the raceway grooves.

Abstract: A sliding type tripod constant velocity joint includes a pair of intermediate members arranged so as to sandwich a tripod shaft part from both sides of side surfaces of a raceway groove of an outer ring and to provide so as to be oscillated relative to the tripod shaft part. The sliding type tripod constant velocity joint further includes a plurality of rolling elements provided between side surfaces of the raceway groove and power transmission surfaces of the intermediate members opposing the side surfaces of the raceway grooves and a cage that supports the rolling elements such that the rolling elements circulate on outer peripheries of the intermediate members.

Abstract: A sliding-type tripod constant velocity joint that includes needle units, each of which is able to prevent rolling elements from falling off in a state where the rolling elements are introduced in a cage, is provided. Each cage (60) of a constant velocity joint (1) forms circulation paths that are trajectories of circulating rolling elements (50), and is formed of a pair of first circulation path forming member (70) and second circulation path forming member (80) that are coupled to face each other so as to respectively support both axial ends of the rolling elements (50). Then, at least one of the circulation path forming members (70 (80)) has a window portion (75 (85)) that is open so as to be able to introduce the rolling elements (50) laterally with respect to a circulating direction into the circulation paths and a rib portion (76 (86)) that is formed so as to extend from a periphery of the window portion (75 (85)) in an introducing direction in which the rolling elements (50) are introduced.

Abstract: A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and a pair of intermediate members which are arranged so as to sandwich a corresponding one of the tripod shaft parts from both sides of side surfaces of the raceway grooves and which are provided so as to be oscillated relative to the corresponding one of the tripod shaft parts.

Abstract: A sliding type tripod constant velocity joint includes an outer ring having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on outer surfaces and opposing the side surfaces of a corresponding one of the raceway grooves.

Abstract: A cross shaft member has four shaft portions arranged in a generally cross-shape around an outer periphery of a body portion thereof, and a recessed portion is formed in the body portion, and has a depth in a direction perpendicular to a plane in which axes of the four shaft portions lie. Four ridge-like thickened portions are formed in the recessed portion, and are equally spaced from one another, and extend diagonally with respect to the axes of the shaft portions in the plane.

Abstract: A sliding type tripod constant velocity joint includes an outer ring having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on outer surfaces and opposing the side surfaces of a corresponding one of the raceway grooves.

Abstract: A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and an intermediate member which is provided on an outer periphery of a corresponding one of the tripod shaft parts so as to be oscillated relative to the corresponding one of the tripod shaft parts and which has power transmission surfaces on both side surfaces and opposing the side surfaces of a corresponding one of the raceway grooves.

Abstract: A sliding type tripod constant velocity joint includes an outer ring of a tubular form having three raceway grooves which are formed on an inner peripheral surface and which extend in a direction of a rotation axis of the outer ring, a tripod including a boss part connected to a shaft and three tripod shaft parts which are provided upright so as to extend outward in a radial direction of the boss part from an outer peripheral surface of the boss part and which are inserted into the raceway grooves, respectively, and a pair of intermediate members which are arranged so as to sandwich a corresponding one of the tripod shaft parts from both sides of side surfaces of the raceway grooves and which are provided so as to be oscillated relative to the corresponding one of the tripod shaft parts.

Abstract: A sliding-type tripod constant velocity joint that includes needle units, each of which is able to prevent rolling elements from falling off in a state where the rolling elements are introduced in a cage, is provided. Each cage (60) of a constant velocity joint (1) forms circulation paths that are trajectories of circulating rolling elements (50), and is formed of a pair of first circulation path forming member (70) and second circulation path forming member (80) that are coupled to face each other so as to respectively support both axial ends of the rolling elements (50). Then, at least one of the circulation path forming members (70 (80)) has a window portion (75 (85)) that is open so as to be able to introduce the rolling elements (50) laterally with respect to a circulating direction into the circulation paths and a rib portion (76 (86)) that is formed so as to extend from a periphery of the window portion (75 (85)) in an introducing direction in which the rolling elements (50) are introduced.

Abstract: A lip portion consists of two cylindrical axial lips 421, 422 extended in parallel to an axial direction of a seal 4 and in different lengths (a radial lip is obviated). A neck 22 of a cross shaft 2 is formed with a neck slant portion 221 defined by a conical surface inclined at 45° relative to an axis thereof. The two axial lips 421, 422 are pressed against the neck slant portion in the axial direction.

Abstract: An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corresponding intermediate members and are able to roll between side surfaces of a corresponding one of raceway grooves of an outer ring and a torque transmitting surface of a corresponding one of the intermediate members. Then, raceway recesses are formed on the side surfaces of each raceway groove so as to extend in a direction of a rotation axis of the outer ring. The shaft-like rolling elements are fitted in the corresponding raceway recesses and are able to roll along bottom surfaces of the respective raceway recesses. Thus, the retainers are arranged outside the raceway recesses.

Abstract: A plurality of first oil passageways are recessed in an annular projected portion of a bearing cup of a cross shaft joint, each first oil passageway communicating with inner and outer periphery sides, and being increasing in groove width gradually from the outer periphery side toward the inner periphery side. A plurality of second oil passageways are recessed in the annular projected portion, and each second oil passageway is disposed between the first oil passageways, and communicates with the inner and outer periphery sides, and is decreasing in groove width gradually from the outer periphery side toward the inner periphery side. When the bearing cup is angularly moved relative to a cross shaft, grease in the first oil passageways is flowed from the outer periphery side of the annular projected portion to the inner periphery side thereof, while grease in the second oil passageways is flowed from the inner periphery side of the annular projected portion toward the inner periphery side.

Abstract: An open end of a sleeve (spline-fitted to a male yoke) remote from a connecting portion of the male yoke is closed by a first lid member. A through hole is formed axially through the male yoke, and includes a cylindrical first passage portion, and a cylindrical second passage portion which is disposed at that side of the first passage portion close to the first lid member and is smaller in inner diameter than the first passage portion. A second lid member is disposed to close that open end of the through hole remote from the first lid member. Air vent holes are formed through the second lid member to extend in an axial direction, and are disposed so as to partially overlap with a portion of an inner peripheral surface of the first passage portion in the axial direction.

Abstract: An intermediate member is rockably provided around an outer periphery of a corresponding one of tripod shaft portions. Shaft-like rolling elements are retained by corresponding retainers so that the shaft-like rolling elements are able to circulate around the corresponding intermediate members and are able to roll between side surfaces of a corresponding one of raceway grooves of an outer ring and a torque transmitting surface of a corresponding one of the intermediate members. Then, raceway recesses are formed on the side surfaces of each raceway groove so as to extend in a direction of a rotation axis of the outer ring. The shaft-like rolling elements are fitted in the corresponding raceway recesses and are able to roll along bottom surfaces of the respective raceway recesses. Thus, the retainers are arranged outside the raceway recesses.

Abstract: An open end of a sleeve (spline-fitted to a male yoke) remote from a connecting portion of the male yoke is closed by a first lid member. A through hole is formed axially through the male yoke, and includes a cylindrical first passage portion, and a cylindrical second passage portion which is disposed at that side of the first passage portion close to the first lid member and is smaller in inner diameter than the first passage portion. A second lid member is disposed to close that open end of the through hole remote from the first lid member. Air vent holes are formed through the second lid member to extend in an axial direction, and are disposed so as to partially overlap with a portion of an inner peripheral surface of the first passage portion in the axial direction.