Spline slip type variable speed transmission half shaft

Abstract

The utility model provides a spline slip type unequal speed transmission half shaft, which mainly solves the problem that the conventional unequal speed transmission half shaft does not have the slip capacity and cannot meet the demand in use. The utility model is characterized in that: the utility model further comprises a connecting pipe (4) which is integrally arranged on the universal joint fork, a cavity (41) is arranged in the connecting pipe, a key groove is arranged on the inner wall of the cavity, a spline part (11) is arranged on the intermediate shaft which extends into the cavity and matches with the key groove, and a one-way valve (6) is arranged on the connecting pipe and communicates with the cavity. The utility model provides a spline slip type unequal speed transmission half shaft which adopts the spline slip structure and has a larger slip amount.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts, specifically to a splined sliding non-constant velocity transmission half shaft. Background Technology

[0002] As shown in the Chinese patent with authorization announcement number CN 207421177 U, there is currently a type of non-constant speed transmission half-shaft on the market. This type of non-constant speed transmission half-shaft does not have sliding capability and cannot meet the requirements when used. Utility Model Content

[0003] In order to overcome the shortcomings of the prior art, this utility model provides a spline sliding non-constant speed transmission half shaft, which mainly solves the problem that conventional non-constant speed transmission half shafts do not have sliding capability and cannot meet the requirements when used.

[0004] The technical solution of this utility model is as follows:

[0005] A splined sliding non-constant velocity transmission half-shaft includes an intermediate shaft. One end of the intermediate shaft is provided with a ball-cage universal joint, and the other end is provided with a cross-shaft universal joint. The cross-shaft universal joint includes a universal joint fork and further includes...

[0006] A connecting pipe is integrally mounted on the universal joint fork, and a cavity is provided inside the connecting pipe, with a keyway provided on the inner wall of the cavity;

[0007] The spline portion is located on the intermediate shaft that extends into the cavity and mates with the keyway;

[0008] A one-way valve is provided on the connecting pipe and communicates with the chamber.

[0009] A sealing ring is provided between the circumferential inner wall of the connecting pipe and the circumferential outer wall of the intermediate shaft.

[0010] The sealing ring includes a ring body, and the ring body is provided with a plurality of sealing lips, which are sealed to the outer wall of the intermediate shaft.

[0011] The ball cage universal joint includes a housing, on which a half shaft for connection with a wheel hub is provided, and a washer and a retaining ring are provided on the half shaft, with the retaining ring located on the outside of the washer.

[0012] The half-shaft is provided with an annular groove, and the snap ring engages with the annular groove.

[0013] The one-way valve includes a valve body, which has a channel that is smaller on the outside and larger on the inside. A sealing ball and an elastic element are provided in the channel. The elastic element presses against the sealing ball to block the opening of the channel.

[0014] The elastic element is a spring.

[0015] The beneficial effects of this utility model are: This utility model provides a spline sliding non-constant speed transmission half shaft, which adopts a spline sliding structure and has a larger sliding range. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of one embodiment of the present invention.

[0017] Figure 2 for Figure 1 Enlarged diagram of point A in the middle.

[0018] Figure 3 for Figure 1 Enlarged diagram of point B in the middle.

[0019] Figure 4 for Figure 1 Enlarged diagram of point C in the middle. Detailed Implementation

[0020] The present invention will be further described below with reference to the accompanying drawings. A splined sliding non-constant velocity transmission half-shaft includes an intermediate shaft 1. One end of the intermediate shaft is provided with a ball-cage universal joint 2, and the other end is provided with a cross-shaft universal joint 3. The cross-shaft universal joint includes a universal joint fork 31 and a connecting pipe 4 integrally formed on the universal joint fork. A chamber 41 is provided inside the connecting pipe, and a keyway is provided on the inner wall of the chamber. A spline portion 11 is provided on the intermediate shaft extending into the chamber and mates with the keyway. A one-way valve 6 is provided on the connecting pipe and communicates with the chamber. Sliding and torque transmission are achieved through the cooperation of the spline and the keyway, resulting in a larger sliding range. The one-way valve is used for oil or grease inlet to increase the internal lubrication of the chamber.

[0021] In this embodiment, as shown in the figure, a sealing ring 5 is provided between the circumferential inner wall of the connecting pipe and the circumferential outer wall of the intermediate shaft.

[0022] In this embodiment, as shown in the figure, the sealing ring includes a ring body, on which a plurality of sealing lips 51 are provided. The sealing lips are in sealing engagement with the outer wall of the intermediate shaft, thereby achieving a sealing function.

[0023] In this embodiment, as shown in the figure, the ball cage universal joint includes a housing, on which a half shaft 22 for connecting with a wheel hub is provided, and a washer 221 and a retaining ring 222 are provided on the half shaft, with the retaining ring located on the outside of the washer.

[0024] In this embodiment, as shown in the figure, the half-shaft is provided with an annular groove 223, and the retaining ring engages with the annular groove. Axial positioning is achieved using a retaining ring and a washer, eliminating the need to damage the threads for anti-loosening, allowing for reuse, and reducing maintenance costs.

[0025] In this embodiment, as shown in the figure, the one-way valve includes a valve body 61. The valve body has a channel 62 that is smaller at the top and larger at the bottom. A sealing ball 63 and an elastic element 64 are located within the channel. The elastic element presses against the sealing ball, causing the sealing ball to seal the opening of the channel. Normally, the opening is sealed by the elastic element. When oil is injected, the external pressure overcomes the elastic element, causing it to contract and the sealing ball to move away from the opening. Because the channel is smaller at the top and larger at the bottom, the sealing ball can no longer seal the channel when it retracts, allowing oil to enter the chamber through the channel.

[0026] In this embodiment, as shown in the figure, the elastic element is a spring.

[0027] In the description of this utility model, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] The embodiments described with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. The embodiments should not be considered as limitations on the present invention, but any improvements made based on the spirit of the present invention should be within the protection scope of the present invention.

Claims

1. A spline-sliding non-constant velocity transmission half-shaft, comprising an intermediate shaft (1), wherein one end of the intermediate shaft is provided with a ball-cage type universal joint (2), and the other end is provided with a cross-shaft type universal joint (3), wherein the cross-shaft type universal joint includes a universal joint fork (31), characterized in that: Also includes A connecting pipe (4) is integrally mounted on the universal joint fork. A chamber (41) is provided inside the connecting pipe, and a keyway is provided on the inner wall of the chamber. The spline portion (11) is provided on the intermediate shaft that extends into the cavity and mates with the keyway; A one-way valve (6) is provided on the connecting pipe and communicates with the chamber.

2. The spline-sliding non-constant velocity transmission half-shaft according to claim 1, characterized in that: A sealing ring (5) is provided between the circumferential inner wall of the connecting pipe and the circumferential outer wall of the intermediate shaft.

3. The spline-sliding non-constant velocity transmission half-shaft according to claim 2, characterized in that: The sealing ring includes a ring body, on which a plurality of sealing lips (51) are provided, and the sealing lips are in sealing fit with the outer wall of the intermediate shaft.

4. The spline-sliding non-constant velocity transmission half-shaft according to claim 1, characterized in that: The ball cage universal joint includes a housing, on which a half shaft (22) for connecting to a wheel hub is provided. A washer (221) and a retaining ring (222) are provided on the half shaft, with the retaining ring located on the outside of the washer.

5. A spline-sliding non-constant velocity transmission half-shaft according to claim 4, characterized in that: The half-shaft is provided with an annular groove (223), and the snap ring engages with the annular groove.

6. The spline-sliding non-constant velocity transmission half-shaft according to claim 1, characterized in that: The one-way valve includes a valve body (61), which has a channel (62) that is smaller on the outside and larger on the inside. The channel has a sealing ball (63) and an elastic element (64). The elastic element presses against the sealing ball to block the opening of the channel.

7. A spline-sliding non-constant velocity transmission half-shaft according to claim 6, characterized in that: The elastic element is a spring.

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