Delphi Technologies, Inc.

Nsk Corporation

Nippon Seiko Kabushiki Kaisha

Toshihiro Ikeda

Yasumasa Mizukoshi

Minoru Ishijima

Akira Aida

A constant velocity joint of tripod type which is both highly strong and durable, and which can maintain a low axial force and low shudder when transmitting torque at a joint angle. The constant velocity joint of tripod type comprises a roller assembly including an outer roller, an inner roller and a needle bearing located therebetween. The outer roller is provided with needle bearing retaining rings and needle bearing stop rings, at each of its upper and lower ends, respectively. The inner roller moves relative to the outer roller in the axial direction. The outer face of the inner roller and the inner face of the outer roller have generally spherical shapes of dimensions similar to each other to freely engage, respectively. The outer face of the trunnion is provided with a partially cylindrical portion with inclined relative to a trunnion centerline.

Constant velocity joint of tripod type

The object of the invention is to provide a constant velocity joint of tripod type which is both highly strong and durable, and which can minimize rolling resistance when transmitting torque at a joint angle. A tripod type constant velocity joint comprises a housing secured to a first rotating shaft and a tripod having trunnion axes spaced apart equally in a circumferential direction and securing equally to the second rotating shaft. The cross section normal to the trunnion axis is shaped to an ellipse and the direction of its short diameter is arranged parallel to the second rotational shaft.

A constant velocity joint of a tripod type comprising a housing formed with three recesses having first and second guide grooves each extending axially in the housing, a tripod comprising trunnions with a bearing assembly having an inner roller and an outer roller in a rolling contact relationship and the first and second guide grooves formed such that the outer roller is tightly pressed on the first guide groove when a rotating force is transmitted, and that the axis of each of the trunnions is displaced from a parallel relationship with the flat bottom face of the first guide groove when the outer roller is pressed thereon with the joint angle kept zero.

Tripod type constant velocity joint

In a tripod type constant velocity joint, out of the pair of guide surfaces, the guide surface on the anchor side to tightly press the outer peripheral face of the outer roller when the rotational torque is transmitted in a predetermined direction is made non-parallel to the central axis of the trunnion under a zero joint angle condition, and there are provided guide portions each having a contact surface to contact with a side face of the outer roller at the anchor side on the side on which a distance between the guide surface on the anchor side and the central axis of the trunnion is extended.

A lash adjuster has a plunger assembly comprising a plunger and a plunger cap. A separator is provided in the plunger cap to prevent the air mixed in the introduced oil from flowing into a reservoir chamber. The plunger cap further has a valve device in addition to the separator for preventing external air from being drawn into the lash adjuster.

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Takasaki, Japan

Toshihiro Ikeda