Axle support assembly

Abstract

The utility model relates to the technical field of automobile suspensions, and discloses a wheel axle support assembly which comprises a driving joint fork, the driving joint fork comprises a joint fork body and two joint fork arms which are integrally formed, the joint fork body is provided with a mounting hole, the joint fork arms are provided with rotating holes, and the center lines of the two rotating holes are arranged in parallel. The center line of the rotating hole is perpendicular to the center line of the mounting hole. The rotating shaft assembly comprises shaft sleeves installed at the two ends of the rotating hole and a shaft tube connected with the shaft sleeves in an inserted mode, the shaft sleeves are in interference clamping connection with the rotating hole, the shaft tube is rotatably connected with the shaft sleeves, and a lubricating cavity is formed between the shaft tube and the shaft sleeves; the bearing piece is mounted in the mounting hole; the oil injection connector is installed on the yoke arm, and the oil injection connector is communicated with the lubricating cavity. The axle support assembly is large in oil storage space, and abrasion of the axle sleeve part can be reduced.

Description

Technical Field

[0001] This utility model relates to the field of automotive suspension technology, specifically to a wheel axle support assembly. Background Technology

[0002] Wheel and axle support assemblies are crucial components connecting wheels to the vehicle body, significantly impacting vehicle stability and safety. They are used to assemble and connect wheels, caliper devices, and axle components. The spatial layout of the wheel and axle support assembly, as well as the flexibility of movement of the connected components, must meet requirements for driving dynamics, stiffness, and strength.

[0003] The wheel axle support assembly has poor lubrication of the central tube and small grease storage space. During long-term operation of the drive unit, grease loss can easily lead to technical problems such as excessive wear of the bushing and abnormal noise at the connection. Therefore, improvements are needed. Utility Model Content

[0004] The technical problem to be solved by this utility model is that the lubrication effect of the shaft tube in the existing wheel and axle support assembly is poor, the grease storage space in the lubrication space is small, and the loss of grease is prone to causing large wear of the bushing and abnormal noise at the connection. Therefore, this utility model provides a wheel and axle support assembly.

[0005] The purpose of this utility model is to provide a wheel and axle support assembly, including:

[0006] The drive fork includes an integrally formed fork body and two fork arms. The fork body is provided with mounting holes, and the fork arms are provided with rotating holes. The center lines of the two rotating holes are arranged in parallel, and the center line of the rotating holes and the center line of the mounting holes are perpendicular to each other.

[0007] A rotating shaft assembly includes bushings installed at both ends of the rotating hole and a shaft tube inserted into and connected to the bushings. The bushings are interference-fitted with the rotating hole, and the shaft tube and the bushings are rotatably connected. A lubrication cavity is provided between the shaft tube and the bushings. An oil injection groove is recessed on the inner wall of the bushings connected to the shaft tube. The oil injection groove is arranged along the axial direction of the bushing and is an elongated strip with one end open. The openings of the oil injection grooves on the two bushings face each other. The oil injection grooves on the two bushings communicate with the outer wall of the shaft tube to form the lubrication cavity.

[0008] The bearing component is installed in the mounting hole;

[0009] An oil injection connector is installed on the fork arm, and the oil injection connector is connected to the lubrication cavity.

[0010] In the above scheme, the mounting hole is used to install bearing components, and the rotating hole is used to install the bushing and shaft tube; these are the basic functions of the wheel and axle support assembly. This application, through a bushing design that is interference-fitted with the rotating hole, ensures that when the shaft tube and bushing rotate relative to each other, the bushing and rotating hole do not slide relative to each other, thus not affecting the rotation of the shaft tube relative to the bushing. The oil injection joint can inject lubricating oil into the lubrication cavity, lubricating the rotation of the shaft tube relative to the bushing, reducing wear on the bushing and abnormal noise at the connection point. The recessed oil injection groove increases the oil storage space, extends the service life of the lubricating oil, and promptly reduces wear on the bushing and abnormal noise at the connection point. Because the shaft tube is a long tube, the oil injection groove is designed as a long, narrow groove with one open end, which better matches the surface area of ​​the shaft tube that can contact the lubricating oil, increasing the lubrication effect.

[0011] In one possible implementation, a plurality of oil injection grooves are evenly arranged around the inner wall of the bushing, and the plurality of oil injection grooves on both ends of the bushing are symmetrically arranged with respect to the central cross-section of the shaft tube.

[0012] In the above scheme, multiple oil injection grooves allow the lubrication chamber to store more lubricating oil at once, thus better lubricating the components.

[0013] In one possible implementation, four oil filling grooves are evenly arranged around the inner wall of each end bushing.

[0014] In the above scheme, the number of oil injection grooves should not be too many, otherwise it will affect the rigidity and strength of the bushing, affect the interference fit strength of the bushing relative to the rotating hole, and reduce the service life requirement of the rotating shaft assembly.

[0015] In one possible implementation, the bushings at both ends are not connected at the center of the shaft tube, and the oil injection connector is positioned directly opposite the point where the bushings at both ends are not connected at the center of the shaft tube.

[0016] In the above scheme, the bushings at both ends are not connected at the center of the shaft tube, which is equivalent to leaving a gap at the oil injection joint spray point, so that the lubricating oil can enter the lubrication chamber more easily.

[0017] In one possible implementation, the bushing includes an axial protrusion and a radial flange, the axial protrusion being mounted within the rotating hole and the radial flange protruding from both ends of the rotating hole.

[0018] In one possible implementation, the oil injection connector protrudes obliquely from the outward side of the fork body.

[0019] In the above scheme, the inclined protruding design is to meet the shape design requirements of the entire wheel axle support assembly.

[0020] In one possible implementation, the end of the bushing exposed from the rotating hole is recessed with an annular groove.

[0021] In the above scheme, the annular groove is designed to facilitate clamping the bushing and applying force when installing it.

[0022] The beneficial effects of this utility model are as follows:

[0023] 1. This utility model can inject lubricating oil into the rotating hole at any time by adding an oil injection joint, so as to play a timely lubrication role and reduce wear of the bushing part and abnormal noise of the connection part.

[0024] 2. By setting multiple oil filling grooves, this utility model can increase the oil storage space inside the bushing, and more lubricating oil can better lubricate the wear and abnormal noise during the rotation process.

[0025] 3. The drive fork of this utility model is manufactured by integral casting, and the bushing is made of plastic. The plastic parts are lightweight, which meets the strength and rigidity requirements of interference fit while reducing the weight of the entire wheel axle support assembly. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of a wheel axle support assembly according to one embodiment.

[0027] Figure 2 This is a longitudinal sectional view of a wheel axle support assembly according to one embodiment.

[0028] Figure 3 This is a schematic cross-sectional view of a wheel axle support assembly according to one embodiment.

[0029] Figure 4 yes Figure 3 Enlarged diagram of point A in the middle.

[0030] Figure 5 This is an exploded structural diagram of a wheel axle support assembly according to one embodiment.

[0031] In the diagram, 10 is the drive fork; 11 is the fork body; 12 is the fork arm; 13 is the mounting hole; 14 is the rotating hole; 15 is the connecting boss; 16 is the through hole; 17 is the lubrication cavity; 20 is the shaft assembly; 21 is the shaft tube; 22 is the shaft sleeve; 221 is the oil filling groove; 222 is the annular groove; 223 is the axial protrusion; 224 is the radial flange; 30 is the bearing component; and 40 is the oil filling connector. Detailed Implementation

[0032] In the accompanying drawings of this utility model, the same or similar reference numerals correspond to the same or similar components. In the description of this utility model, it should be understood that if terms such as "upper," "lower," "left," "right," "inner," and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the 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, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this utility model. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0033] like Figures 1 to 5 As shown, this utility model provides a wheel axle support assembly, which includes a drive fork 10, a shaft assembly 20, a bearing 30, and an oil injection connector 40. The drive fork 10 includes an integrally formed fork body 11 and two fork arms 12, and the drive fork 10 has an approximately Y-shaped structure. Preferably, the included angle of the two fork arms 12 is in the range of 120 degrees to 150 degrees. The two fork arms 12 can be configured to be 120 degrees, 125 degrees, 130 degrees, 144 degrees, or 150 degrees.

[0034] The fork body 11 is provided with mounting holes 13, and the fork arm 12 is provided with rotating holes 14. The bearing 30 is installed in the mounting holes 13 of the drive fork 10. The center lines of the two rotating holes 14 are arranged parallel to each other, and the center lines of the rotating holes 14 and the mounting holes 13 are perpendicular to each other. The rotating shaft assembly 20 is installed in the rotating holes 14 and is rotatably connected to the drive fork 10.

[0035] The shaft assembly 20 includes bushings 22 mounted at both ends of the rotating hole 14 and a shaft tube 21 inserted into and connected to the bushings 22. The bushings 22 provide overhead support for the ends of the shaft tube 21, increasing the space of the lubrication chamber 17. This allows for a larger capacity of lubricating grease, extending the lubrication time of the shaft assembly 20 and reducing the risk of wear and abnormal noise. The grease inlet connector 40 communicates with the lubrication chamber 17, enabling the replenishment of grease to the lubrication chamber 17. The bushings 22 prevent direct contact and friction between the shaft tube 21 and the fork arm 12, resulting in a low coefficient of friction.

[0036] Preferably, the bushing 22 is a hollow stepped shaft structure, including an axial protrusion 223 and a radial flange 224. The axial protrusion 223 is installed in the rotating hole 14, and the radial flange 224 protrudes from both ends of the rotating hole 14. The axial protrusion 223 of the bushing 22 is inserted into the fork arm 12. The shaft tube 21 is inserted into the bushing 22, and a lubrication cavity 17 is formed between the outer peripheral wall of the shaft tube 21 and the inner peripheral wall of the bushing 22. The diameter of the lubrication cavity 17 is adjusted by the size of the bushing 22, and the volume of the lubrication space is easily adjustable.

[0037] The inner wall of the bushing 22, where it connects to the shaft tube 21, is recessed with an oil filling groove 221. The oil filling groove 221 is arranged along the axial direction of the bushing 22, and the oil filling grooves 221 at both ends of the bushing 22 communicate with the outer wall of the shaft tube 22 to form the lubrication cavity 17. The recessed oil filling groove increases the oil storage space, extends the service life of the lubricating oil, and promptly reduces wear on the bushing and abnormal noise at the connection point. The oil filling groove 221 can be of various shapes, such as rectangular, circular, or irregular, as long as it facilitates the storage of lubricating oil.

[0038] Preferably, the oil filling groove 221 is an elongated strip with one end open, and the openings of the oil filling grooves 221 on the two end bushings 22 face each other. Multiple oil filling grooves 221 are evenly arranged around the inner wall of the bushing 22, and the multiple oil filling grooves 221 on the two end bushings 22 are symmetrically arranged with respect to the central cross-section of the shaft tube 21. The elongated shape is the easiest to process. Due to the requirements of component rigidity and strength, more oil filling grooves 221 are not necessarily better; preferably, four oil filling grooves 221 are evenly arranged around the inner wall of each end bushing 22.

[0039] Preferably, the shaft tube 21 is configured as a tubular shaft structure, and the outer peripheral wall of the shaft tube 21 is configured as an optical shaft structure.

[0040] Furthermore, the bushing 22 is made of plastic. The bushing 22 can be injection molded from plastic, which is convenient for processing.

[0041] The drive fork 10 is manufactured by integral casting, while the fork body 11 and the two fork arms 12 are integrally formed by forging or casting, which greatly improves the stability and strength of the structure.

[0042] In one embodiment, the oil injection connector 40 protrudes at an angle toward the fork body 11. The oil injection connector 40 is connected to the fork arm 12 and the lubrication cavity 17 to inject lubricating oil. The angled arrangement of the oil injection connector 40 toward the fork body 11 allows for lubrication of the outside of the connection point, improving the ease of application.

[0043] Preferably, the bushings at both ends are not connected at the center of the shaft tube, and the oil injection connector is positioned directly opposite the point where the bushings at both ends are not connected at the center of the shaft tube. The fact that the bushings at both ends are not connected at the center of the shaft tube effectively leaves a gap at the spray point of the oil injection connector, allowing lubricating oil to enter the lubrication chamber more easily.

[0044] Additionally, the large-diameter end of the bushing 22 exposed from the rotating hole is recessed with an annular groove 222 for clamping during installation.

[0045] Preferably, the two oil filling connectors 40 are arranged in a figure-eight shape to avoid the moving space of the drive joint components and improve the ease of connection.

[0046] like Figures 1 to 3 As shown, in one embodiment, the bearing component 30 adopts a double-row roller bearing or a double-row deep groove ball bearing. The mounting hole 13 has an elongated hole structure, which allows the double-row roller bearing or double-row deep groove ball bearing to expand the support area and increase the stress-bearing support area. Furthermore, the large axial length of the bearing component 30 can improve the connection stability.

[0047] In one embodiment, the drive fork 10 further includes a connecting boss 15 that protrudes laterally from the fork body 11. The connecting boss 15 has a through hole 16, the axis of which is parallel to the center line of the mounting hole 13. The connecting boss 15 protrudes from one side of the fork body 11, forming a lateral protrusion structure to enhance the structural strength of the fork body 11. Preferably, the connecting boss 15 has two through holes 16 for connecting the caliper assembly to achieve the connection of the caliper assembly.

[0048] Preferably, the connecting boss 15 is disposed at the intersection of the two segmented fork arms 12 to enhance the structural strength of the segmented fork arms 12. Furthermore, the intersection of the connecting boss 15 and the two segmented fork arms 12 further improves the structural strength.

[0049] 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 the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A wheel and axle support assembly, characterized in that, include: The drive fork (10) includes an integrally formed fork body (11) and two fork arms (12). The fork body (11) is provided with mounting holes (13), and the fork arms (12) are provided with rotating holes (14). The center lines of the two rotating holes (14) are arranged in parallel, and the center line of the rotating hole (14) and the center line of the mounting hole (13) are perpendicular to each other. The rotating shaft assembly (20) includes bushings (22) installed at both ends of the rotating hole (14) and a shaft tube (21) inserted into and connected to the bushings (22). The bushings (22) are press-fitted into the rotating hole (14). The shaft tube (21) and the bushings (22) are rotatably connected. A lubrication cavity (17) is provided between the shaft tube (21) and the bushings (22). An oil injection groove (221) is recessed on the inner wall of the bushing (22) connected to the shaft tube (21). The oil injection groove (221) is arranged along the axial direction of the bushing (22) and is an elongated strip with one end open. The openings of the oil injection grooves (221) of the two bushings (22) face each other. The oil injection groove (221) communicates with the outer wall of the shaft tube (21) to form the lubrication cavity (17). Bearing component (30) is installed in the mounting hole (13); An oil injection connector (40) is installed on the fork arm (12), and the oil injection connector (40) is connected to the lubrication chamber (17).

2. The wheel and axle support assembly according to claim 1, characterized in that, The oil injection grooves (221) are evenly arranged around the inner wall of the bushing (22), and the multiple oil injection grooves (221) of the bushings (22) at both ends are symmetrically arranged with the central cross-section of the shaft tube (21) as the symmetrical surface.

3. The wheel and axle support assembly according to claim 2, characterized in that, The oil filling grooves (221) of the two end bushings (22) are evenly arranged in four places around the inner wall of the bushing (22).

4. The wheel and axle support assembly according to claim 3, characterized in that, The bushings (22) at both ends are not connected at the center of the shaft tube (21), and the oil injection joint (40) is set directly opposite the point where the bushings (22) at both ends are not connected at the center of the shaft tube (21).

5. The wheel and axle support assembly according to claim 1, characterized in that, The bushing (22) includes an axial protrusion (223) and a radial flange (224). The axial protrusion (223) is installed in the rotating hole (14) and the radial flange (224) protrudes from both ends of the rotating hole (14).

6. The wheel and axle support assembly according to claim 1, characterized in that, The oil injection connector (40) protrudes outward from the fork body (11) on the outward side.

7. The wheel and axle support assembly according to claim 1, characterized in that, The end of the bushing (22) that protrudes from the rotating hole (14) is provided with an annular groove (222).

8. The wheel and axle support assembly according to claim 1, characterized in that, The drive fork (10) is integrally cast, and the bushing (22) is made of plastic.

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