Transmission shaft assembly without internal spline

Abstract

The utility model discloses a transmission shaft assembly without an internal spline. The transmission shaft assembly mainly solves the problems that an existing transmission shaft assembly is large in number of parts and troublesome to assemble. The retainer (4) and the end, extending into the bell housing, of the intermediate shaft are integrally arranged, and a plurality of pockets (41) are formed in the retainer; the star-shaped sleeve (5) and the bell-shaped shell are integrally arranged, and the star-shaped sleeve (5) is correspondingly arranged on the inner side of the retainer; and the rolling pieces (42) are arranged in the pockets and are used for being in rolling fit with the outer wall of the starlike sleeve and the inner wall of the bell housing. According to the transmission shaft assembly without the internal spline, the starlike sleeve is directly arranged on the bell housing, spline transmission is not needed, and overall assembly is more convenient.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of automobile parts, concretely relates to a no internal spline transmission shaft assembly. BACKGROUND

[0002] The automobile transmission shaft is a key component of the transmission system. In complex road conditions, it is prone to wear, fatigue cracks and other faults. The transmission shaft assembly structure has diversity. From the connection form, there are flange type, spline type and the like to adapt to different assembly needs and serve the transmission efficiency and stability under different working conditions.

[0003] The conventional assembly intermediate shaft is matched with the star-shaped sleeve through the spline, and the retainer is arranged between the bell-shaped shell and the star-shaped sleeve, so that the overall parts are more and the assembly is more troublesome. UTILITY MODEL CONTENT

[0004] In order to overcome the defects of the background art, the utility model provides a no internal spline transmission shaft assembly, which mainly solves the problems of more parts and more troublesome assembly of the current transmission shaft assembly.

[0005] The technical scheme of the utility model is,

[0006] A no internal spline transmission shaft assembly, comprising an intermediate shaft, the intermediate shaft is connected with a first universal joint at one end and a second universal joint at the other end, the first universal joint comprises a bell-shaped shell, and further comprising

[0007] A retainer is integrally arranged at one end of the intermediate shaft extending into the bell-shaped shell, and a plurality of pockets are arranged on the retainer.

[0008] A star-shaped sleeve is integrally arranged with the bell-shaped shell and is correspondingly arranged on the inner side of the retainer.

[0009] Rolling elements are arranged in the pockets and are used for rolling cooperation with the outer wall of the star-shaped sleeve and the inner wall of the bell-shaped shell.

[0010] The rolling elements are balls.

[0011] A retaining ring is further arranged in the bell-shaped shell and is arranged on the outer side of the rolling elements.

[0012] The intermediate shaft comprises a first shaft and a second shaft, and the second shaft is movably mounted with the first shaft along the axial direction.

[0013] A sliding groove is arranged on the axial wall of the first shaft, part of the second shaft is arranged in the sliding groove, a second retainer is arranged in the sliding groove, and steel balls cooperating with the second shaft are arranged on the second retainer.

[0014] The pockets are six in number.

[0015] A dust cover is arranged between the intermediate shaft and the bell housing.

[0016] The utility model discloses a kind of inner spline-free transmission shaft assembly, star-shaped sleeve is directly arranged on bell housing, without spline transmission, overall assembly is more convenient. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a sectional view schematic diagram of one embodiment of the utility model.

[0018] Figure 2 It is a partial sectional view schematic diagram of one embodiment of the utility model.

[0019] Figure 3 It is Figure 1 The enlarged schematic view of middle A.

[0020] Figure 4 It is Figure 1 The sectional view schematic diagram of middle E-E. DETAILED DESCRIPTION

[0021] The utility model makes further illustration in combination with drawings: as shown in the figure, a kind of inner spline-free transmission shaft assembly, including intermediate shaft 1, the intermediate shaft one end is connected with first universal joint 2, the other end is connected with second universal joint 3, the first universal joint includes bell housing 21, still including retainer 4, with the one end of intermediate shaft that stretches into bell housing integrally arranged, the retainer is equipped with a plurality of pockets 41;Star-shaped sleeve 5, with the bell housing integrally arranged, correspondingly be equipped in the inside of the retainer;Rolling element 42, be equipped in the pocket, for with the outer wall of the star-shaped sleeve and the inner wall of bell housing rolling cooperation.The structure of retainer is same with conventional retainer, just make it integrally with intermediate shaft, can be through casting or welding etc., cancel spline cooperation, let shell realize the effect of star-shaped sleeve, while retainer and intermediate shaft are integrally designed, reduce the production of spare part, solve torsional vibration and other problems.

[0022] In the embodiment, as shown in the figure, the rolling element is a ball. Specifically, it can be a steel ball, and the channel in the bell housing cooperates with the star-shaped sleeve.

[0023] In the embodiment, as shown in the figure, the bell housing is further provided with a retaining ring 22, which is arranged outside the rolling element. It prevents falling out.

[0024] In the embodiment, as shown in the figure, the intermediate shaft includes a first shaft 11 and a second shaft 12, and the second shaft is movably mounted with the first shaft along the axial direction. The sliding amount is increased, and the use effect is better.

[0025] In the embodiment, as shown in the figure, the axial wall of the first shaft is provided with a sliding groove 13, part of the second shaft is arranged in the sliding groove, the sliding groove is provided with a second retainer 14, and the second retainer is provided with a steel ball 141 matched with the second shaft.

[0026] In the embodiment, as shown in the figure, the pocket is provided with six.

[0027] In the embodiment, as shown in the figure, a dust cover 6 is arranged between the intermediate shaft and the bell-shaped shell. Foreign matters are prevented from entering.

[0028] In the description of the 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 the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element indicated must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0029] In addition, the terms "first", "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the utility model, the meaning of "multiple" is two or more than two, unless otherwise specifically limited.

[0030] The embodiments described with reference to the drawings are exemplary and are intended to explain the utility model, and cannot be understood as a limitation on the utility model. The embodiments should not be regarded as a limitation on the utility model, but any improvement made on the basis of the spirit of the utility model should be within the protection scope of the utility model.

Claims

1. A hollow spline-free propeller shaft assembly comprising a propeller shaft (1) having a first universal joint (2) at one end and a second universal joint (3) at the other end, the first universal joint comprising a bell housing (21), characterised in that: Also include A holder (4) is integrally arranged with the end of the intermediate shaft extending into the bell-shaped shell, and a plurality of pockets (41) are arranged on the holder; A star-shaped sleeve (5) is integrally arranged with the bell-shaped shell and is arranged on the inner side of the holder; Rolling members (42) are arranged in the pockets and are used to roll with the outer wall of the star-shaped sleeve and the inner wall of the bell-shaped shell.

2. A shaft assembly as claimed in claim 1, characterised in that: The rolling members are rolling balls.

3. A shaft assembly as defined in claim 1, wherein: A retaining ring (22) is further arranged in the bell-shaped shell and is arranged on the outer side of the rolling members.

4. A shaft assembly as defined in claim 1, wherein: The intermediate shaft includes a first shaft (11) and a second shaft (12), and the second shaft is movably mounted with the first shaft along the axial direction.

5. A shaft assembly as defined in claim 4, wherein: A sliding groove (13) is arranged on the axial wall of the first shaft, part of the second shaft is arranged in the sliding groove, a second holder (14) is arranged in the sliding groove, and steel balls (141) that cooperate with the second shaft are arranged on the second holder.

6. A shaft assembly as defined in claim 1, wherein: The pockets are six in number.

7. A shaft assembly as claimed in any one of claims 1 to 6, wherein: A dust cover (6) is arranged between the intermediate shaft and the bell-shaped shell.

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