CN219932776U - Special-shaped channel transmission shaft assembly - Google Patents

Abstract

A transmission shaft assembly with a special-shaped channel. The novel transmission shaft mainly solves the problem that the conventional transmission shaft is of a simple arc-shaped structure, is concentrated in stress and is damaged due to insufficient rigidity. The method is characterized in that: the first universal joint comprises a first shell, the middle shaft part stretches into the first shell and is internally provided with a star-shaped sleeve, a first retainer is arranged between the first shell and the star-shaped sleeve, a rolling element is arranged on the first retainer, a rollaway nest matched with the rolling element is arranged on the star-shaped sleeve, and the rollaway nest comprises a first rollaway nest, a second rollaway nest and a third rollaway nest which are tangent in sequence. The utility model provides a special-shaped channel transmission shaft assembly, which is designed to strengthen the rigidity of a product per se due to a unique spherical arc (stress concentration is reduced and impact load is weakened), so that the product can avoid damage caused by insufficient rigidity, and the service life of the product is greatly prolonged.

Description

Special-shaped channel transmission shaft assembly

Technical Field

The utility model relates to the field of automobile part machining, in particular to a transmission shaft assembly with a special-shaped channel.

Background

The transmission shaft is an important part for transmitting power in the transmission system of the automobile, and the transmission shaft and the drive axle together transmit the power of the engine to wheels so that the automobile generates driving force.

The conventional transmission shaft has a simple arc-shaped channel, so that the stress is concentrated, and the transmission shaft is damaged due to insufficient rigidity.

Disclosure of Invention

In order to overcome the defects of the background technology, the utility model provides a special-shaped channel transmission shaft assembly, which mainly solves the problems that the channel of the current transmission shaft is of a simple arc-shaped structure, the stress is concentrated, and the rigidity is insufficient to cause damage.

The technical scheme adopted by the utility model is as follows:

the utility model provides a dysmorphism channel transmission shaft assembly, includes the jackshaft, jackshaft one end is equipped with first universal joint, and the other end is equipped with the second universal joint, first universal joint includes first casing, jackshaft part stretches into be equipped with the inner star cover of first casing, first casing with be equipped with first holder between the shape cover, be equipped with the rolling element on the first holder, be equipped with on the star cover with rolling element complex raceway, the raceway includes tangent first raceway, second raceway and third raceway in proper order.

The arc radius R1 of the first rollaway nest is 70.92mm.

The arc radius R2 of the second rollaway nest is 31.6mm.

The arc radius R3 of the third rollaway nest is 16.3mm.

The axially outer end face of the first shell is provided with an end face spline.

The intermediate shaft comprises a first shaft and a second shaft, the first shaft is connected with the first universal joint, the second shaft is connected with the second universal joint, a sliding groove is formed in the axial direction of the first shaft, and part of the second shaft is in sliding fit with the sliding groove.

The part of the second shaft extending into the sliding groove is provided with a second retainer, and the second retainer is provided with a rolling ball matched with the inner wall of the sliding groove.

The peripheral outer wall of the first shell is provided with a plurality of cooling fins.

The beneficial effects of the utility model are as follows: the utility model provides a special-shaped channel transmission shaft assembly, which is designed to strengthen the rigidity of a product per se because of the arc of a ball channel (stress concentration is reduced and impact load is weakened), so that the product can avoid damage caused by insufficient rigidity, and the service life of the product is greatly prolonged.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model.

Fig. 2 is a schematic view of an inner race according to an embodiment of the present utility model.

Fig. 3 is an enlarged schematic view of fig. 1 at a.

Detailed Description

The utility model is further described below with reference to the accompanying drawings: as shown in the figure, the special-shaped channel transmission shaft assembly comprises a middle shaft 1, wherein one end of the middle shaft is provided with a first universal joint 2, the other end of the middle shaft is provided with a second universal joint 3, the first universal joint comprises a first shell 21, a middle shaft part stretches into the first shell and is internally provided with a star-shaped sleeve 4, a first retainer 5 is arranged between the first shell and the star-shaped sleeve, a rolling piece 51 is arranged on the first retainer, a rolling way 41 matched with the rolling piece is arranged on the star-shaped sleeve, and the rolling way comprises a first rolling way 411, a second rolling way 412 and a third rolling way 413 which are tangential in sequence. The joint type is designed to strengthen the rigidity of the product due to the arc of the ball channel (stress concentration is reduced and impact load can be weakened), so that the product can avoid damage caused by insufficient rigidity, the service life of the product is greatly prolonged, and the length of the ball channel is prolonged by adopting three sections of tangent ball channels, so that stress concentration is prevented.

In this embodiment, as shown in the drawing, the arc radius R1 of the first track is 70.92mm.

In this embodiment, as shown in the figure, the arc radius R2 of the second track is 31.6mm.

In this embodiment, as shown in the drawing, the radius R3 of the arc of the third track is 16.3mm. The adoption of the arc radiuses of the first rollaway nest, the second rollaway nest and the third pipeline is one of the schemes for realizing the utility model.

In this embodiment, as shown in the drawing, the first housing axial outer end face is provided with an end face spline 211. The connecting bolt is not subjected to shearing force under normal working conditions and only subjected to axial tension force by the transmission of the end face spline teeth instead of the bolts. The moment transferred like this is shared by a plurality of teeth, and the atress is more even, avoids stress high concentration, and the bolt is difficult for also inefficacy.

In this embodiment, as shown in the drawing, the intermediate shaft includes a first shaft 11 and a second shaft 12, the first shaft is connected with the first universal joint, the second shaft is connected with the second universal joint, a sliding groove 111 is disposed in an axial direction of the first shaft, and a portion of the second shaft is slidably matched with the sliding groove. The general jackshaft can not slide, has greatly reduced the slip volume of product, and constant velocity universal joint swing angle is less moreover. The first shaft of the product is of a cavity structure, the weight of the product can be greatly reduced, the light weight of the product is realized, the required slippage of the product can be effectively ensured, the slippage of the product can be increased, and the use efficiency of the product is improved.

In this embodiment, as shown in the figure, the portion of the second shaft extending into the chute is provided with a second cage 121, and the second cage is provided with a rolling ball 122 that is matched with the inner wall of the chute. Can slide more smoothly and has better use effect. A rollaway nest can be arranged on the inner wall of the chute.

In this embodiment, as shown in the figure, the first housing circumferential outer wall is provided with a plurality of cooling fins 212. The aluminum radiating fins are arranged on the first shell, so that the internal temperature of the product is reduced, and the efficient operation of the product is ensured.

In the description of the present utility model, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present utility model.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

The embodiments described with reference to the drawings are exemplary and intended to be illustrative of the utility model and should not be construed as limiting the utility model. The examples should not be construed as limiting the utility model, but any modifications based on the spirit of the utility model should be within the scope of the utility model.

Claims (8)

1. The utility model provides a dysmorphism channel transmission shaft assembly, includes jackshaft (1), jackshaft one end is equipped with first universal joint (2), and the other end is equipped with second universal joint (3), its characterized in that: the first universal joint comprises a first shell (21), an intermediate shaft part stretches into the first shell and is internally provided with an inner race (4), a first retainer (5) is arranged between the first shell and the inner race, rolling elements (51) are arranged on the first retainer, raceways (41) matched with the rolling elements are arranged on the inner race, and each raceway comprises a first raceway (411), a second raceway (412) and a third raceway (413) which are tangent in sequence.

2. The profiled channel drive shaft assembly as defined in claim 1 wherein: the arc radius R1 of the first rollaway nest is 70.92mm.

3. The profiled channel drive shaft assembly as defined in claim 2, wherein: the arc radius R2 of the second rollaway nest is 31.6mm.

4. A profiled channel drive shaft assembly as defined in claim 3, wherein: the arc radius R3 of the third rollaway nest is 16.3mm.

5. The profiled channel drive shaft assembly as defined in claim 1 wherein: an end surface spline (211) is arranged on the axially outer end surface of the first shell.

6. The profiled channel drive shaft assembly as defined in claim 1 wherein: the intermediate shaft comprises a first shaft (11) and a second shaft (12), the first shaft is connected with the first universal joint, the second shaft is connected with the second universal joint, a sliding groove (111) is formed in the axial direction of the first shaft, and part of the second shaft is in sliding fit with the sliding groove.

7. The profiled channel drive shaft assembly as defined in claim 6 wherein: the part of the second shaft extending into the sliding groove is provided with a second retainer (121), and the second retainer is provided with a rolling ball (122) matched with the inner wall of the sliding groove.

8. The profiled channel drive shaft assembly as defined in claim 7 wherein: the first housing circumferential outer wall is provided with a plurality of cooling fins (212).