Hub integrated double-slip constant velocity universal joint driving shaft assembly

Abstract

The utility model discloses a hub integrated double-slip constant velocity universal joint driving shaft assembly. The problem that abnormal noise is generated when torque is transmitted between an existing rear drive shaft assembly and a hub bearing unit through a spline is mainly solved. The universal joint assembly is characterized in that the second universal joint assembly comprises a shell and an outer ring, a bearing is arranged between the outer ring and the shell, the shell comprises a flange plate and a cylinder which are integrally manufactured, the flange plate is provided with a mounting hole for mounting a fastener, the cylinder is internally provided with a channel, and the channel is communicated with the flange plate. A retainer is arranged between one end, extending into the cylinder body, of the middle shaft and the inner wall of the cylinder body, and a rolling piece matched with the channel is arranged on the retainer. According to the hub integrated double-slippage constant velocity universal joint driving shaft assembly, in the using process, a spline connection structure is omitted, the structures of the constant velocity universal joint driving shaft assembly and the hub are simplified, the manufacturing process is simplified, the weight of parts is reduced, and the manufacturing cost is reduced. Particularly, relative sliding between the ball cage positioning end face and the hub bearing end face can be effectively avoided, and then abnormal noise caused by relative sliding of the contact faces between the constant velocity universal joint driving shaft assembly and the hub bearing unit is completely eliminated.

Description

Technical Field

[0001] The utility model relates to the field of automobile parts, in particular to a hub-integrated double-slip constant velocity universal joint drive shaft assembly. Background Art

[0002] The automobile constant velocity joint drive shaft assembly is an important part of the automobile. The automobile constant velocity joint drive shaft assembly includes a universal joint with one end connected to the power output end of the automobile gearbox, and a universal joint with the other end connected to the power input part of the automobile wheel. With the continuous development of the new energy automobile industry and people's increasing requirements for vehicle performance and comfort, new energy electric logistics vehicles and electric commercial vehicles also use large-torque constant velocity joint drive shaft assemblies on a large scale. At present, most of these models use rear-drive integral axles. Because the rear-drive wheels have no steering requirements, the drive shaft assembly is The layout angle in the automobile chassis is relatively small, generally within 5 degrees. The traditional rear drive shaft assembly is generally a fixed constant velocity joint with an external spline, and the wheel hub bearing unit has an internal spline. The torque is transmitted between the two through the internal and external splines. When the internal and external splines produce a gap due to long-term use, the mutually compressed end faces of the wheel hub bearing unit and the fixed constant velocity joint positioning end faces produce relative sliding under the action of large torque, thereby generating abnormal noise. Therefore, when the vehicle is running, it may cause problems such as drive shaft vibration noise, affecting the NVH performance of the entire vehicle. Utility Model Content

[0003] In order to overcome the shortcomings of the background technology, the utility model provides a hub-integrated double-slip constant velocity universal joint drive shaft assembly, which mainly solves the problem of abnormal noise caused by the current rear drive shaft assembly and the hub bearing unit transmitting torque through splines.

[0004] The technical solution adopted by the utility model is:

[0005] A hub-integrated double-slip constant-velocity universal joint drive shaft assembly includes an intermediate shaft, one end of the intermediate shaft is provided with a first universal joint, and the other end is provided with a second universal joint assembly, the second universal joint assembly includes a shell and an outer ring, a bearing is provided between the outer ring and the shell, the shell includes an integrally manufactured flange and a cylinder, the flange is provided with mounting holes for fastener installation, the cylinder is provided with a channel, a retaining frame is provided between one end of the intermediate shaft extending into the cylinder and the inner wall of the cylinder, and the retaining frame is provided with a rolling element that cooperates with the channel.

[0006] The rolling element is a rolling ball.

[0007] The utility model also comprises an outer ring, and the bearing is installed between the outer ring and the cylinder.

[0008] It also includes a retaining ring, the outer wall of the cylinder is provided with a first slot, the inner wall of the outer ring is provided with a second slot, part of the retaining ring is provided in the first slot, and part of the retaining ring is provided in the second slot.

[0009] It also includes a dust cover, one end of which is connected to the cylinder body, and the other end of which is connected to the intermediate shaft.

[0010] There are six channels.

[0011] The beneficial effects of the utility model are as follows: the utility model provides a wheel hub integrated double-slip constant velocity universal joint drive shaft assembly, which cancels the spline connection structure during use, simplifies the structure of the constant velocity universal joint drive shaft assembly and the wheel hub, simplifies the manufacturing process, and reduces the weight of parts and components. In particular, it can effectively avoid relative sliding between the ball cage positioning end face and the wheel hub bearing end face, thereby completely eliminating the abnormal noise caused by the relative sliding of the contact surface between the constant velocity universal joint drive shaft assembly and the wheel hub bearing unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a cross-sectional schematic diagram of an embodiment of the utility model.

[0013] Figure 2 for Figure 1 A magnified schematic diagram of center A.

[0014] Figure 3 It is a three-dimensional schematic diagram of a shell of an embodiment of the utility model.

[0015] Figure 4 The figure is a cross-sectional schematic diagram of a shell of an embodiment of the utility model. DETAILED DESCRIPTION

[0016] The utility model is further described below in conjunction with the accompanying drawings: as shown in the figure, a hub-integrated double-sliding constant velocity universal joint drive shaft assembly includes an intermediate shaft 1, a first universal joint 2 is provided at one end of the intermediate shaft, and a second universal joint assembly 3 is provided at the other end, the second universal joint assembly includes a shell 4 and an outer ring 5, a bearing 51 is provided between the outer ring and the shell, the shell includes an integrally made flange 41 and a cylinder 42, the flange is provided with a mounting hole 411 for mounting a fastener, a channel is provided in the cylinder, a retaining frame 43 is provided between one end of the intermediate shaft extending into the cylinder and the inner wall of the cylinder, and a rolling member 44 matching the channel is provided on the retaining frame. The flange is used to connect with the wheel hub, and a groove is provided on the cylinder body for cooperating with the intermediate shaft. The intermediate shaft is provided with a star-shaped sleeve, and a retaining frame is provided in the cylinder body. Its transmission method is the existing technology and will not be repeated here. Its main improvement lies in that a groove is provided on the inner ring of the wheel hub bearing unit for directly cooperating with the intermediate shaft, that is, the universal joint can be integrated with the inner ring, the spline connection structure is cancelled, the structure of the constant velocity joint drive shaft assembly and the wheel hub is simplified, the manufacturing process is simplified, and the weight of parts is reduced. In particular, it can effectively avoid relative sliding between the ball cage positioning end face and the wheel hub bearing end face, thereby completely eliminating the abnormal noise caused by the relative sliding of the contact surface between the constant velocity joint drive shaft assembly and the wheel hub bearing unit.

[0017] In this embodiment, as shown in the figure, the rolling element is a rolling ball.

[0018] In this embodiment, as shown in the figure, an outer ring 5 is also included, and the bearing is installed between the outer ring and the cylinder.

[0019] In this embodiment, as shown in the figure, a retaining ring 52 is also included, the outer wall of the cylinder is provided with a first slot 421, the inner wall of the outer ring is provided with a second slot, part of the retaining ring is provided in the first slot, and part of the retaining ring is provided in the second slot. For positioning, a convex ring is also provided on the outer wall of the cylinder to position the other side of the bearing.

[0020] In this embodiment, as shown in the figure, a dust cover 6 is also included, one end of which is connected to the cylinder body, and the other end of which is connected to the intermediate shaft, so as to prevent dust.

[0021] In this embodiment, as shown in the figure, the number of the channels is 6, which makes the operation more stable.

[0022] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0023] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0024] The embodiments described with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention. The embodiments should not be regarded as limiting the present invention, but any improvements based on the spirit of the present invention should be within the scope of protection of the present invention.

Claims

1. A hub-integrated double-slip constant velocity universal joint drive shaft assembly, comprising an intermediate shaft (1), one end of the intermediate shaft being provided with a first universal joint (2), and the other end being provided with a second universal joint assembly (3), characterized in that: The second universal joint assembly comprises a housing (4) and an outer ring (5), a bearing (51) being provided between the outer ring and the housing, the housing comprising an integrally manufactured flange (41) and a cylinder (42), the flange being provided with a mounting hole (411) for mounting a fastener, the cylinder being provided with a channel, a retaining frame (43) being provided between an end of the intermediate shaft extending into the cylinder and an inner wall of the cylinder, the retaining frame being provided with a rolling element (44) matching the channel.

2. The hub-integrated double-slip constant velocity universal joint drive shaft assembly according to claim 1, characterized in that: The rolling element is a rolling ball.

3. The hub-integrated double-slip constant velocity universal joint drive shaft assembly according to claim 2, characterized in that: The bearing is installed between the outer ring and the cylinder.

4. The hub-integrated double-slip constant velocity universal joint drive shaft assembly according to claim 3, characterized in that: It also comprises a retaining ring (52), the outer wall of the cylinder being provided with a first clamping groove (421), the inner wall of the outer ring being provided with a second clamping groove, part of the retaining ring being arranged in the first clamping groove, and part of the retaining ring being arranged in the second clamping groove.

5. The hub-integrated double-slip constant velocity universal joint drive shaft assembly according to claim 4, characterized in that: It also includes a dust cover (6), one end of which is connected to the cylinder body, and the other end of which is connected to the intermediate shaft.

6. The hub-integrated double-sliding constant velocity universal joint drive shaft assembly according to claim 5, characterized in that: There are six channels.

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