External spline transmission automobile hub bearing unit

Abstract

The utility model provides an external spline transmission automobile hub bearing unit, which belongs to the field of automobile hub bearings and comprises a steering knuckle, a bearing body is mounted in the steering knuckle, a hub body is slidably connected in the bearing body, an internal spline is arranged in the hub body, and the internal spline is connected with the hub body in a sliding manner. A driving shaft is jointly installed in the steering knuckle, the bearing body and the hub body, an external spline is installed on the driving shaft, and a limiting assembly is installed in the steering knuckle. A press-fitting assembly; the press-fitting assembly comprises two sliding grooves formed in the steering knuckle, two sliding blocks are slidably connected into each sliding groove, two-way screws are rotatably connected to the inner walls of the two sliding grooves, the four sliding blocks correspond to each other in a one-to-one mode, and the two pairs of sliding blocks penetrate through the two-way screws in a threaded mode respectively. According to the utility model, the bearing body can be conveniently and quickly mounted and dismounted by a user, the workload of workers is reduced, and the portability of the device is improved.

Description

Technical Field

[0001] This utility model relates to the field of automotive wheel hub bearing technology, and in particular to an external spline drive automotive wheel hub bearing unit. Background Technology

[0002] Wheel hub bearings are components used in automobile axles to bear weight and provide precise guidance for the rotation of the wheel hub. They bear both axial and radial loads and are an important part of automobile load-bearing and rotation. After a period of use, automobile wheel hub bearing units need to be replaced.

[0003] When replacing the bearing body of existing automotive wheel hub bearing units, workers need to use corresponding tools to press and disassemble the bearing body. The operation process is cumbersome, resulting in a large workload for workers and low installation and disassembly efficiency. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an external spline drive automotive wheel hub bearing unit.

[0005] An embodiment of this utility model provides an external spline-driven automotive wheel hub bearing unit, comprising:

[0006] A steering knuckle, wherein a bearing body is installed inside the steering knuckle, a wheel hub body is slidably connected inside the bearing body, and an internal spline is provided inside the wheel hub body. A drive shaft is installed together in the steering knuckle, the bearing body, and the wheel hub body, and an external spline is installed on the drive shaft. A limit component is installed inside the steering knuckle.

[0007] A press-fit assembly includes two sliding grooves within the steering knuckle, each groove containing two sliding blocks slidably connected to it. A bidirectional screw is rotatably connected to the inner wall of each groove. Four sliding blocks are arranged in a one-to-one correspondence. Two pairs of sliding blocks are threaded through the two bidirectional screws. Two connecting rods rotatably pass through the side wall of the steering knuckle, each connecting rod being fixedly connected to the two bidirectional screws. Each of the four sliding blocks has a fixing groove, each fixing groove containing a press-fit block slidably connected to it. A unidirectional screw rotatably passes through each of the four sliding blocks, and the four unidirectional screws are threadedly connected to the four press-fit blocks.

[0008] Furthermore, the limiting assembly includes two limiting plates fixedly connected to the inner wall of the steering knuckle, and a retaining ring is installed inside the steering knuckle.

[0009] Furthermore, each of the four unidirectional screws is fixedly connected to a knob.

[0010] Furthermore, a handle is fixedly connected to both of the connecting rods.

[0011] Furthermore, a set of support rods is fixedly connected to the inner walls of both sliding grooves.

[0012] Furthermore, the side walls of all four press blocks are provided with anti-slip textures.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. When installing the bearing body, the user first presses the bearing body into the steering knuckle. Then, the user rotates the two knobs away from the drive shaft, causing the two outermost pressing blocks away from the drive shaft to move out of the fixing groove. Then, the user rotates the handle, which moves the two pressing blocks located in the two sliding grooves near the hub body towards the drive shaft end, thus pushing the bearing body to the limiting plate. This achieves quick pressing of the bearing body and improves the portability of the device.

[0015] 2. When the user needs to remove the bearing body, similarly, the user first rotates the handle in the opposite direction, which will move the two pressing blocks located in the two sliding grooves away from the hub body towards the drive shaft. Then, the user rotates the two knobs near the drive shaft, which will move the pressing blocks out of the fixed groove. Then, the user rotates the handle, which will move the two pressing blocks located in the two sliding grooves near the drive shaft towards the hub body 3, which will push out the bearing body, making it easier for the user to remove the bearing body and further improving the portability of the device.

[0016] 3. The strength of the steering knuckle is increased by the support rod. Attached Figure Description

[0017] Figure 1 This is a three-dimensional front view of the structure of an external spline drive automotive wheel hub bearing unit as described in this embodiment of the utility model.

[0018] Figure 2 This is an exploded perspective view of an external spline-driven automotive wheel hub bearing unit structure as described in this embodiment of the present invention.

[0019] Figure 3 This is a perspective sectional view of an external spline drive automotive wheel hub bearing unit as described in an embodiment of this utility model.

[0020] In the above attached figures: 1 steering knuckle, 2 bearing body, 3 wheel hub body, 4 drive shaft, 5 sliding groove, 6 sliding block, 7 double-acting screw, 8 fixing groove, 9 press-fit block, 10 one-way screw, 11 limit plate, 12 retaining ring, 13 knob, 14 grip, 15 support rod. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-3 As shown in the figure, this utility model embodiment proposes an external spline drive automotive wheel hub bearing unit, comprising:

[0023] Steering knuckle 1, bearing body 2 is installed inside steering knuckle 1, wheel hub body 3 is slidably connected inside bearing body 2, wheel hub body 3 is provided with built-in spline, drive shaft 4 is installed together in steering knuckle 1, bearing body 2 and wheel hub body 3, external spline is installed on drive shaft 4, limit component is installed inside steering knuckle 1.

[0024] Press-fit assembly; The press-fit assembly includes two sliding grooves 5 opened in the steering knuckle 1. A set of support rods 15 are fixedly connected to the inner wall of each of the two sliding grooves 5 to improve the strength of the steering knuckle 1. Two sliding blocks 6 are slidably connected in each of the two sliding grooves 5. Two bidirectional screws 7 are rotatably connected to the inner wall of each of the two sliding grooves 5. The four sliding blocks 6 correspond one-to-one. The two pairs of sliding blocks 6 are threaded through the two bidirectional screws 7 respectively. Two connecting rods are rotatably connected through the side wall of the steering knuckle 1. A handle 14 is fixedly connected to each of the two connecting rods to facilitate the user to rotate the connecting rods and improve the portability of the device. The two connecting rods are fixedly connected to the two bidirectional screws 7 respectively. A fixing groove 8 is opened on each of the four sliding blocks 6.

[0025] Each of the four fixed slots 8 has a slidably connected press block 9. The side walls of the four press blocks 9 are provided with anti-slip texture, which increases the friction between the press block 9 and the bearing body 2 and improves the stability of the press operation. Each of the four sliding blocks 6 has a rotatable one-way screw 10. The four one-way screws 10 are respectively threaded to the four press blocks 9. Each of the four one-way screws 10 has a knob 13 fixedly connected to it, which makes it easy for the user to rotate the one-way screw 10 and improves the portability of the device. The limiting component includes two limiting plates 11 fixedly connected to the inner wall of the steering knuckle 1. A retaining ring 12 is installed inside the steering knuckle 1.

[0026] The detailed working process of this utility model is as follows:

[0027] First, the user places the device in the designated work area. Then, when the user needs to install the bearing body 2, the bearing body 2 is pressed into the steering knuckle 1. Further pressing of the bearing body 2 is required. The user then rotates the two knobs 13 on the side away from the drive shaft 4, causing the one-way screw 10 to rotate. The two outermost pressing blocks 9, away from the drive shaft 4, move out of the fixing groove 8. The user then rotates the handle 14, causing the two pressing blocks 9 located in the two sliding grooves 5 near the hub body 3 to move towards the drive shaft 4, pushing the bearing body 2 to the limiting plate 11. This achieves rapid pressing of the bearing body 2, improving the device's portability. The user then reverses the knobs 13, resetting the two pressing blocks 9. Next, the retaining ring 12 is installed into the steering knuckle 1, then the wheel hub body 3 is inserted into the bearing body 2, and then the drive shaft 4 is inserted into the wheel hub body 3 to complete the assembly. When the user needs to remove the bearing body 2, similarly, the user first rotates the handle 14 in the opposite direction, which will move the two sliding blocks 6 located in the two sliding grooves 5 away from the wheel hub body 3 towards the drive shaft 4. Then, the user rotates the two knobs 13 near the drive shaft 4, which will move the pressing block 9 out of the fixed groove 8. Then, the user rotates the handle 14, which will move the two pressing blocks 9 located in the two sliding grooves 5 near the drive shaft 4 towards the wheel hub body 3, which will push out the bearing body 2, making it easier for the user to remove the bearing body 2 and further improving the portability of the device.

[0028] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. An outboard spline drive automotive wheel hub bearing unit, characterized in that, Include: The knuckle (1), the bearing body (2) is installed in the knuckle (1), the wheel hub body (3) is connected in the bearing body (2) and slides, the wheel hub body (3) is equipped with built-in spline, the knuckle (1), bearing body (2) and wheel hub body (3) are installed in common drive shaft (4), the drive shaft (4) is installed with external spline, the knuckle (1) is installed with limit component; The press-fitting assembly includes two sliding grooves (5) in the knuckle (1), two sliding grooves (5) are slidably connected with two sliding blocks (6), two sliding grooves (5) are rotatably connected with two-way screw (7), four sliding blocks (6) are one-to-one corresponding, two pairs of sliding blocks (6) are respectively threaded through two two-way screws (7), the side wall of the knuckle (1) is rotatably connected with two connecting rods, two connecting rods are respectively fixedly connected with two two-way screws (7), four sliding blocks (6) are respectively fixedly connected with four press blocks (9), four sliding blocks (6) are rotatably connected with one-way screw (10), four one-way screws (10) are respectively threaded on four press blocks (9).

2. An externally toothed wheel hub bearing unit for a vehicle according to claim 1, characterized in that Wherein: The limit component includes two limit plates (11) fixedly connected with the inner wall of the knuckle (1), and the knuckle (1) is provided with a snap ring (12).

3. An externally toothed wheel hub bearing unit for a vehicle according to claim 1, characterized in that Wherein: Four one-way screws (10) are fixedly connected with knobs (13).

4. An outboard spline drive automotive hub bearing unit according to claim 1, characterized in that Wherein: Two connecting rods are fixedly connected with handles (14).

5. An externally toothed drive wheel hub bearing unit according to claim 1, characterized in that Wherein: The inner wall of two sliding grooves (5) is fixedly connected with a group of supporting rods (15).

6. An externally toothed automotive wheel hub bearing unit according to claim 1, characterized in that Wherein: Four press blocks (9) are provided with anti-skid lines on the side wall.

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