Constant velocity joint boot
AssigneeToyoda Gosei Co., Ltd.
InventorYuji Furuta
Life of this patent
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Abstract
Ring-shaped ridges (23, 24) that extends in the circumferential direction and is capable of falling toward a bellows portion (12) when a larger cylindrical portion (11) comes into press contact therewith are formed on the outer peripheral surface of the bushing (2). Since the ring-shaped ridges (23, 24) fall toward the bellows portion (12) when being tightened, when a pressure is exerted from grease, the pressure acts in the direction of restoring the ring-shaped ridge (23) to the original posture. Therefore, the ring-shaped ridge (23) serves as a dam and is brought into press contact with the larger cylindrical portion (11) at a high bearing pressure.
Claims6
A constant velocity joint boot comprising:
- a boot body made of a first material including
- a smaller cylindrical portion attachable to a shaft,
- a larger cylindrical portion disposed coaxially with and at a distance from the smaller cylindrical portion and being larger than the smaller cylindrical portion in diameter, and
- a conical bellows portion connecting the smaller cylindrical portion and the larger cylindrical portion;
- and
- a ring-shaped bushing formed of a second material that is softer than the first material and having a sealing projection to be engaged with a mating member on an inner peripheral surface thereof, the boot body and the bushing being tightened on the mating member by reducing diameters thereof from the outer peripheral surface of the larger cylindrical portion;
- at least one ring-shaped ridge formed on an outer peripheral surface of the bushing and extending in a circumferential direction of the boot body, the ring-shaped ridge being configured so as to fall down toward a side where the bellows portion is provided in a longitudinal direction of the boot body when the ring-shaped ridge is pressed by the larger cylindrical portion.
Dependencies are inferred from the claim text.