Inner fork chute type axially sliding constant-velocity-ratio universal joint

Abstract

The invention relates to an automobile transmission gimbal joint, in particular to an inner fork slideway type axially slidable constant speed gimbal joint, comprising a housing, a three-pin shelf, ball rings respectively and slidably sleeved on each foot axis of the three-pin shelf, ball paths matched with the ball rings, and a dirt shroud. The gimbal joint is characterized in that the gimbal joint further comprises a trifurcate joint which is a component on which three ball paths are circumferentially arranged, and the axle center of which is provided with a center hole. The trifurcate jointis fixed on one end of a middle shaft, and the center hole is radially communicated with the three ball paths. The center hole and the three ball paths are axially communicated with the end surface of the end of the middle shaft and the end on which the trifurcate joint is fixed. The three-pin shelf is sleeved on the trifurcate joint. The ball rings sleeved on the foot axis of the three-pin shelfand the ball paths form rolling or / and sliding fit. The three-pin shelf is fixed on the inner cavity of the housing. The gimbal joint is low in production cost, high in assembly precision and stablein product quality.

Description

technical field [0001] The invention relates to an automobile transmission universal joint, in particular to an inner fork slideway type constant velocity universal joint capable of sliding axially. Background technique [0002] The transmission shaft used for automobile power transmission is generally composed of a fixed end universal joint, an intermediate shaft and a sliding end universal joint. The fixed end universal joint is connected to the wheel end of the vehicle, and the sliding end universal joint is connected to the engine end. The current sliding end universal joint usually adopts the tripod type axial sliding constant velocity universal joint. This kind of universal joint has the following disadvantages: 1. The ball track is integrally arranged in the inner cavity of the shell so that the wall thickness of the inner cavity It needs to be enlarged a lot, which greatly increases the consumption of raw materials. 2. The shell blank with three ballways needs to b...

AI Technical Summary

Problems solved by technology

The current sliding end universal joint usually adopts the tripod type axial sliding constant velocity universal joint. This kind of universal joint has the following disadvantages: 1. The ball track is integrally arranged in the inner cavity of the shell so that the wall thickness of the inner cavity Need to increase a lot, which greatly increases the consumption of raw materials

3. It is easy to deform the fairway after intermediate frequency heat treatment. Since the fairway of the shell is in a semi-closed state, it is impossible to reprocess the fairway after heat treatment, so the matching gap between the ball ring rolling on the fairway and the fairway is not consistent, which will affect the The assembly clearance and performance and efficiency of the product ultimately affect the quality of the product

5. The appearance of the dust cover is a deep corrugated rotary rubber part, and the length is long, the shape is complex, the manufacturing cost is high, the effect of anti-centrifugation and anti-deformation is poor, and it is easy to be damaged

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