Grease sealing structure of constant velocity joint of vehicle, and constant velocity joint including same
AssigneeHansae Mobility Co., Ltd.
InventorsDal Soo Jang, Jong Uk Seo
Life of this patent
Estimating the term…
Abstract
A grease sealing structure provides sealing grease filled between an outer race and an inner race of a constant velocity joint and includes: a boot formed to be closely fitted and supported on both the outer race and the inner race; a clamping cap configured to be fastened to the outer race so that a movement in an axial direction of the outer race is limited and to press the boot in the axial direction of the outer race to ensure the boot to be tightly fitted to the outer race; and a sealing ring configured to be fastened to the boot to press the boot against an outer circumferential surface of the inner race.
Claims17
A grease sealing structure for sealing grease filled between an outer race and an inner race of a constant velocity joint, comprising:
- a boot formed to be closely fitted and supported on both the outer race and the inner race;
- a clamping cap configured to be fastened to the outer race so that a movement in an axial direction of the outer race is limited and to press the boot in the axial direction of the outer race to ensure the boot to be tightly fitted to the outer race;
- and
- a sealing ring configured to be fastened to the boot to press the boot against an outer circumferential surface of the inner race,
- wherein the boot comprises a first fixing part configured to be fastened to the outer race, a second fixing part configured to be fastened to the inner race, and a connecting part connecting the first fixing part and the second fixing part,
- wherein the clamping cap comprises a fastening part that is fastened to the outer race so that a movement in the axial direction is restricted, and a support part extending radially from one end of the fastening part to press the first fixing part against an axial support surface of the outer race in the axial direction,
- wherein the outer race is provided with an axial support surface that is formed at an axial end thereof, the axial support surface having a groove extending along a circumferential direction,
- wherein the first fixing part is provided with a sealing protrusion extending the circumferential direction to correspond to a shape of the groove and is inserted into the groove.
A constant velocity joint comprising:
- an outer race forming a plurality of outer ball grooves;
- an inner race forming a plurality of inner ball grooves that are respectively paired with the outer ball grooves;
- a plurality of balls that are respectively positioned in a space formed by a pair of the outer and internal ball grooves;
- a ball cage accommodating the plurality of balls;
- and
- a grease sealing structure that provides of grease that is filled with a space between the outer race and the inner race where the balls and the ball cage are positioned,
- wherein the grease sealing structure comprises:
- a boot formed to be closely fitted and supported on both the outer race and the inner race;
- a clamping cap configured to be fastened to the outer race so that a movement in an axial direction of the outer race is limited and to press the boot in the axial direction of the outer race to ensure the boot to be tightly fitted to the outer race;
- and
- a sealing ring configured to be fastened to the boot to press the boot against an outer circumferential surface of the inner race,
- wherein the boot comprises a first fixing part configured to be fastened to the outer race, a second fixing part configured to be fastened to the inner race, and a connecting part connecting the first fixing part and the second fixing part,
- wherein the clamping cap comprises a fastening part that is fastened to the outer race so that a movement in the axial direction is restricted, and a support part extending radially from one end of the fastening part to press the first fixing part against an axial support surface of the outer race in the axial direction,
- wherein the outer race is provided with an axial support surface that is formed at an axial end thereof, the axial support surface having a groove extending along a circumferential direction,
- wherein the first fixing part is provided with a sealing protrusion extending the circumferential direction to correspond to a shape of the groove and is inserted into the groove.
Dependencies are inferred from the claim text.