Hyundai Wia Corporation

Il Hun Ryu

Thomas Christopher Bowen

Tae Hong Kim

Nam Huh

Jose Da Silva

Hun Hee Lee

Jeong Yong Yun

Disclosed is a range shift mechanism in the form of a floating planetary gear assembly for a transfer case. The range shift mechanical according to the present invention can improve power efficiency and generate low noises by suppressing gear rotation in a high range mode of the range shift system.

Range shift system for transfer case

A constant velocity joint for a drive system comprises: a tripod housing coupled to the first rotating shaft and having a plurality of guide grooves therein, each guide groove extending in an axial direction of the tripod housing; a spider coupled to the second rotating shaft and having a plurality of trunnions, each trunnion positioned in a corresponding guide groove of the tripod housing; and a spherical roller disposed between the trunnion and the guide groove of the tripod housing, and a plurality of needle rollers disposed between the trunnion and spherical roller. Each spherical roller is in angular contact with the guide groove of the tripod housing with two contact points displaced relative to a pitch circle diameter line of the tripod housing. The ratio of the length (CL) between two contact points of tripod housing groove to the length (SL) between two edges of spherical roller is between 0.5 and 0.85, and the ratio of the radius (TGR) of the guide groove of the tripod housing to the radius (SRR) of the spherical roller is between 1.1 and 1.4.

Tripod constant velocity joint

Growing community of inventors

Gyeonggi-do, South Korea

Il Hun Ryu