Driving shaft assembly for vehicle and vehicle

Abstract

The utility model discloses a driving shaft assembly used for a vehicle and the vehicle, the driving shaft assembly comprises a driving shaft, a hub bearing and an anti-attrition piece, the driving shaft is provided with a body part and a connecting part, and the connecting part is located at one end of the body part; the hub bearing surrounds the outer peripheral surface of the connecting part and is connected to the connecting part; at least part of the anti-attrition piece surrounds the outer peripheral surface of the body part, and at least the other part of the anti-attrition piece is matched with the body part and the hub bearing to abut against the body part and the hub bearing on the two sides in the axial direction; wherein clamping grooves which extend annularly and are communicated end to end are formed in the peripheral surface of the body part, clamping convex parts which extend annularly are formed on the anti-attrition part, and the clamping convex parts are movably arranged in the clamping grooves. According to the driving shaft assembly disclosed by the utility model, the clamping convex part is movably arranged in the clamping groove, so that the flexible matching between the anti-attrition piece and the driving shaft is realized, the anti-attrition piece can be simultaneously and movably contacted with the driving shaft and the hub bearing, the anti-attrition effect is improved, and the performance and the durability of the driving shaft assembly are improved.

Description

Technical Field

[0001] The utility model relates to the field of vehicles, in particular to a driving shaft assembly for a vehicle and the vehicle. Background Art

[0002] In the existing automobile transmission system, the drive shaft assembly is a key component connecting the engine and the wheels, and its performance directly affects the driving stability, safety and comfort of the car. In order to reduce friction, wear and noise, a friction-reducing gasket is usually added between the drive shaft and the wheel hub bearing. The friction-reducing gasket plays a role in reducing friction and increasing service life to a certain extent.

[0003] However, conventional anti-friction pads are usually fixed on the drive shaft, which is complex and time-consuming to assemble. In addition, since the anti-friction pad and the drive shaft cannot move relative to each other, only one side of the anti-friction pad rubs against the wheel hub bearing, resulting in poor anti-friction effect and short service life. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a drive shaft assembly. According to the drive shaft assembly of the utility model, by movably setting the clamping protrusion in the clamping groove, flexible cooperation between the wear reducing member and the drive shaft is achieved, so that the wear reducing member can be in active contact with the drive shaft and the wheel hub bearing at the same time, thereby improving the wear reducing effect and improving the performance and durability of the drive shaft assembly.

[0005] The utility model also proposes a vehicle having the above drive shaft assembly.

[0006] According to the utility model, the drive shaft assembly includes: a drive shaft, the drive shaft is formed with a main body and a connecting part, the connecting part is located at one end of the main body; a wheel hub bearing, the wheel hub bearing is arranged around the outer circumferential surface of the connecting part and is connected to the connecting part; a wear-reducing part, the wear-reducing part is at least partially arranged around the outer circumferential surface of the main body and at least another part is respectively matched with the main body and the wheel hub bearing on both sides in the axial direction; wherein, a groove extending in an annular manner and connected to each other at the end is formed on the outer circumferential surface of the main body, and a clamping protrusion extending in an annular manner is formed on the wear-reducing part, and the clamping protrusion can be movably arranged in the groove.

[0007] According to the drive shaft assembly of the utility model, the main body of the drive shaft is used to transmit torque, and the connecting part of the drive shaft is located at one end of the main body, and the drive shaft can be connected to other components through the connecting part. By providing a hub bearing, the hub bearing surrounds the outer circumference of the connecting part and is connected to the connecting part, and the hub bearing allows the drive shaft to rotate relative to the wheel while reducing friction and wear. By providing a wear-reducing member, the wear-reducing member can reduce the friction between the drive shaft and the hub bearing. At least part of the wear-reducing member surrounds the outer circumference of the main body of the drive shaft so that the wear-reducing member is connected to the main body of the drive shaft; and the other part of the wear-reducing member cooperates with the main body and the hub bearing on both sides in the axial direction to stop, so that the wear-reducing member can contact the drive shaft and the hub bearing at the same time to reduce the friction between the drive shaft and the hub bearing. An annularly extending slot is formed on the outer peripheral surface of the main body of the driving shaft, and an annularly extending snap-in convex portion is formed on the wear-reducing member, so that the snap-in convex portion matches the shape of the slot, and the snap-in convex portion can be snapped into the slot to realize the installation of the wear-reducing member on the driving shaft, which is simple to assemble, short in assembly time, and convenient for replacing the wear-reducing member during use. The slots are connected to each other end to end, and the slots provide a movable space for the snap-in convex portion, and the snap-in convex portion can move along the extension direction of the slot, and when the snap-in convex portion moves in the slot, the wear-reducing member and the driving shaft can generate relative movement, so that one side surface of the wear-reducing member can rub against the driving shaft, and the other side surface of the wear-reducing member can rub against the wheel hub bearing, thereby improving the wear-reducing effect and increasing the service life of the wear-reducing member.

[0008] Therefore, according to the drive shaft assembly of the utility model, by movably arranging the snap-fitting protrusion in the snap-fitting groove, flexible cooperation between the wear-reducing component and the drive shaft is achieved, so that the wear-reducing component can be in active contact with the drive shaft and the wheel hub bearing at the same time, thereby improving the wear-reducing effect and enhancing the performance and durability of the drive shaft assembly.

[0009] According to some embodiments of the present invention, the clamping protrusion is configured as a plurality of protrusions spaced apart in the circumferential direction, or the clamping protrusion is configured as one protrusion connected end to end.

[0010] According to some embodiments of the utility model, the wear-reducing component includes: a friction portion, the friction portion is formed with an annular hole suitable for the connecting portion to pass through, and the friction portion is respectively matched and stopped with the main body portion and the hub bearing on both sides in the thickness direction; a matching portion, the matching portion is arranged at the edge of the friction portion and extends axially to surround the outer peripheral surface of the main body portion, and the clamping protrusion is formed on the matching portion.

[0011] According to some embodiments of the present invention, the snap-fit ​​protrusion is arranged at the free end of the matching portion, and the wear-reducing member forms a matching groove between the snap-fit ​​protrusion and the friction portion, which is suitable for accommodating a portion of the main body portion.

[0012] According to some embodiments of the present invention, both side surfaces of the friction part are coated with a wear-resistant layer.

[0013] According to some embodiments of the present invention, the engaging protrusion extends radially outwardly in a direction away from the friction portion, and a free end abuts against an inner wall of the engaging groove.

[0014] According to some embodiments of the present invention, the friction reducing member is constructed as an integrally formed member.

[0015] According to some embodiments of the present invention, the thickness of the wear-reducing member is s and satisfies: 0.5 mm ≤ s ≤ 1.0 mm.

[0016] According to some embodiments of the utility model, the drive shaft assembly further includes: a limit member, which is disposed at an end of the connecting portion away from the main body portion, and the limit member is disposed around the outer circumferential surface of the connecting portion and abuts against the wheel hub bearing to limit the movement of the wheel hub bearing.

[0017] The vehicle according to the present utility model is briefly described below.

[0018] The vehicle according to the utility model includes the drive shaft assembly described in any one of the above embodiments. Since the vehicle according to the utility model includes the drive shaft assembly described in any one of the above embodiments, the vehicle according to the utility model has a highly efficient, wear-reducing, stable and reliable drive shaft assembly, which can effectively reduce the friction between the drive shaft and the wheel hub bearing, and improve driving stability and service life.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a schematic structural diagram of a drive shaft of a drive shaft assembly according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic structural diagram of a wear reducing member of a drive shaft assembly according to an embodiment of the utility model;

[0023] Figure 3 yes Figure 2 Cross-section of the middle AA;

[0024] Figure 4 yes Figure 3Partial detail of point B in the middle;

[0025] Figure 5 yes Figure 1 Partial detail of point D in the middle.

[0026] Reference numerals:

[0027] Driving shaft 11, main body 111, slot 1111, connecting portion 112;

[0028] The wear reducing member 12 , the friction portion 121 , the annular hole 1211 , the matching portion 122 , and the clamping protrusion 1221 . DETAILED DESCRIPTION

[0029] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0030] In the related art, the conventional anti-friction gasket is usually fixed on the drive shaft, which is complicated in process and takes a long time to assemble. In addition, since the anti-friction gasket and the drive shaft cannot move relative to each other, the anti-friction gasket only has one side rubbing against the wheel hub bearing, resulting in poor anti-friction effect and short service life.

[0031] Reference below Figure 1-Figure 5 A drive shaft assembly according to an embodiment of the present utility model is described.

[0032] like Figure 1-Figure 5 As shown, the drive shaft assembly according to the utility model includes a drive shaft 11, a wheel hub bearing and a wear reducing member 12, wherein the drive shaft 11 is formed with a main body portion 111 and a connecting portion 112, wherein the connecting portion 112 is located at one end of the main body portion 111; the wheel hub bearing is arranged around the outer circumference of the connecting portion 112 and is connected to the connecting portion 112; the wear reducing member 12 is at least partially arranged around the outer circumference of the main body portion 111 and at least another portion is respectively matched with the main body portion 111 and the wheel hub bearing on both sides in the axial direction; wherein a groove 1111 extending in an annular manner and connected to each other from end to end is formed on the outer circumference of the main body portion 111, and a clamping protrusion 1221 extending in an annular manner is formed on the wear reducing member 12, and the clamping protrusion 1221 is movably arranged in the groove 1111.

[0033] According to the drive shaft assembly of the utility model, the body 111 of the drive shaft 11 is used to transmit torque, and the connecting portion 112 of the drive shaft 11 is located at one end of the body 111, and the drive shaft 11 can be connected to other components through the connecting portion 112. By providing a hub bearing, the hub bearing surrounds the outer circumference of the connecting portion 112 and is connected to the connecting portion 112, and the hub bearing allows the drive shaft 11 to rotate relative to the wheel while reducing friction and wear. By providing a wear reducing member 12, the wear reducing member 12 can reduce the friction between the drive shaft 11 and the hub bearing. At least part of the wear reducing member 12 surrounds the outer circumference of the body 111 of the drive shaft 11, so that the wear reducing member 12 is connected to the body 111 of the drive shaft 11; and the other part of the wear reducing member 12 cooperates with the body 111 and the hub bearing on both sides in the axial direction, respectively, so that the wear reducing member 12 can contact the drive shaft 11 and the hub bearing at the same time to reduce the friction between the drive shaft 11 and the hub bearing. An annularly extending groove 1111 is formed on the outer peripheral surface of the main body 111 of the driving shaft 11, and an annularly extending snap-in protrusion 1221 is formed on the wear-reducing member 12, so that the snap-in protrusion 1221 matches the shape of the groove 1111, and the snap-in protrusion 1221 can be snapped into the groove 1111 to realize the installation of the wear-reducing member 12 on the driving shaft 11, which is simple to assemble, takes a short assembly time, and is convenient for replacing the wear-reducing member 12 during use. The card slot 1111 is connected to each other end to end, and the card slot 1111 provides a movable space for the card slot 1221. The card slot 1111 can move along the extension direction of the card slot 1111. When the card slot 1111 moves in the card slot 1111, the wear reducing member 12 and the drive shaft 11 can generate relative movement, so that one side surface of the wear reducing member 12 can rub against the drive shaft 11, and the other side surface of the wear reducing member 12 can rub against the wheel hub bearing, thereby improving the wear reducing effect and increasing the service life of the wear reducing member 12.

[0034] According to the drive shaft assembly of the utility model, by movably arranging the engaging protrusion 1221 in the engaging groove 1111, flexible cooperation between the wear reducing member 12 and the drive shaft 11 is achieved, so that the wear reducing member 12 can be in active contact with the drive shaft 11 and the wheel hub bearing at the same time, thereby improving the wear reducing effect and enhancing the performance and durability of the drive shaft assembly.

[0035] According to some embodiments of the utility model, the clamping protrusion 1221 is configured as a plurality of circumferentially spaced protrusions. By configuring the clamping protrusion 1221 as a plurality of circumferentially spaced protrusions, each clamping protrusion 1221 can be inserted into the slot 1111, and the wear reducing member 12 forms a stable connection with the drive shaft 11 through the joint action of the plurality of clamping protrusions, which not only improves the connection strength between the wear reducing member 12 and the drive shaft 11, but also enables the wear reducing member 12 to resist forces in different directions to adapt to various working conditions. At the same time, since the clamping protrusions 1221 are spaced, it helps to reduce the assembly difficulties caused by manufacturing errors or improper installation, and improves the flexibility and efficiency of assembly. In addition, the distribution of the plurality of clamping protrusions 1221 can also effectively disperse the contact pressure between the wear reducing member 12 and the drive shaft 11, reduce wear, and further extend the service life of the wear reducing member 12.

[0036] According to some embodiments of the present invention, Figure 2 As shown, the clamping protrusion 1221 is constructed to be connected end to end. By constructing the clamping protrusion 1221 to be connected end to end, the clamping protrusion 1221 is a continuously surrounding annular structure and can be completely clamped into the clamping groove 1111 on the outer peripheral surface of the main body 111 of the drive shaft 11, providing better stability and rigidity. Since the clamping protrusion 1221 is continuously surrounding, it can provide uniform support and fixation in the circumferential direction, thereby enhancing the overall strength and stability of the wear-reducing member 12, so that the wear-reducing member 12 can maintain stable performance during long-term use, and extend the service life of the drive shaft assembly.

[0037] According to some embodiments of the present invention, Figure 2-Figure 4As shown, the friction reducing member 12 includes a friction portion 121 and a matching portion 122. The friction portion 121 is formed with an annular hole 1211 suitable for the connection portion 112 to pass through. The friction portion 121 is respectively matched with the body portion 111 and the hub bearing on both sides in the thickness direction; the matching portion 122 is arranged at the edge of the friction portion 121 and extends along the axial direction to surround the outer peripheral surface of the body portion 111, and a clamping protrusion 1221 is formed on the matching portion 122. By setting the friction portion 121, the friction portion 121 directly contacts the body portion 111 of the drive shaft 11 and the hub bearing to reduce the friction between the drive shaft 11 and the hub bearing. An annular hole 1211 is formed on the friction portion 121, and the annular hole 1211 allows the connection portion 112 of the drive shaft 11 to pass through, so that the friction portion 121 can be sleeved on the outer periphery of the connection portion 112. When the wear reducing member 12 is mounted on the drive shaft 11, the wear reducing member 12 contacts the main body 111 of the drive shaft 11 and the hub bearing on both sides in the thickness direction, thereby reducing friction between the drive shaft 11 and the hub bearing. By providing the matching portion 122, the matching portion 122 is provided at the edge of the friction portion 121 and extends along the axial direction, so that the matching portion 122 can be arranged around the outer peripheral surface of the main body 111 of the drive shaft 11. A snap-fitting protrusion 1221 is formed on the matching portion 122, so that the wear reducing member 12 can be attached to the drive shaft 11, and stable installation is achieved through the matching of the snap-fitting protrusion 1221 and the snap-fitting groove 1111.

[0038] According to some embodiments of the present invention, Figure 2-Figure 4 As shown, the engaging protrusion 1221 is arranged at the free end of the matching part 122, and the wear reducing member 12 is formed with a matching groove suitable for accommodating part of the main body 111 between the engaging protrusion 1221 and the friction part 121. By arranging the engaging protrusion 1221 at the free end of the matching part 122, the free end refers to the end of the matching part 122 away from the friction part 121, so that the wear reducing member 12 can be more easily aligned and inserted into the slot 1111 on the drive shaft 11 during installation. At the same time, the wear reducing member 12 is formed with a matching groove between the engaging protrusion 1221 and the friction part 121. After the engaging protrusion 1221 is inserted into the slot 1111, the matching groove will accommodate part of the main body 111, so that the wear reducing member 12 can be stably fixed on the drive shaft 11 after installation, and it is not easy to fall off during use, which not only improves the connection stability between the wear reducing member 12 and the drive shaft 11, but also helps to reduce the wear caused by vibration or impact, and prolongs the service life of the wear reducing member 12.

[0039] According to some embodiments of the utility model, a wear-resistant layer is coated on both sides of the friction part 121. By coating the wear-resistant layer on both sides of the friction part 121, the wear-resistant layer is made of a wear-resistant material to significantly reduce direct friction with the main body 111 of the drive shaft 11 and the hub bearing, thereby extending the service life of the wear-reducing member 12. By coating the wear-resistant layer, the wear resistance of the wear-reducing member 12 can be significantly improved without changing the overall structure of the wear-reducing member 12, so that the wear-reducing member 12 is more suitable for various complex working environments.

[0040] According to some embodiments of the utility model, the engaging protrusion 1221 extends radially outwardly in a direction away from the friction portion 121 and the free end abuts against the inner wall of the slot 1111. The direction away from the friction portion 121 refers to the direction outward from the friction portion 121 in the axial direction. The engaging protrusion 1221 does not simply extend perpendicularly to the outer surface of the drive shaft 11, but extends outwardly at an angle, so that the free end of the engaging protrusion 1221 can abut against the inner wall of the slot 1111, thereby increasing the connection stability between the wear reducing member 12 and the drive shaft 11.

[0041] According to some embodiments of the utility model, the wear reducing member 12 is constructed as an integrally formed member. The wear reducing member 12 is a complete and indivisible component directly produced through a complete manufacturing process. By constructing the wear reducing member 12 as an integrally formed member, the wear reducing member 12 has higher structural integrity and stability. Since the wear reducing member 12 is integrally formed without welding, riveting or other connection points, the risk of failure or damage that may be caused by the connection portion 112 is reduced. In addition, the integrally formed member also reduces material waste, improves material utilization, and thus reduces production costs. At the same time, since the wear reducing member 12 is a complete component and does not require additional assembly steps, the installation process is simpler and faster, thereby improving the installation and maintenance efficiency of the wear reducing member 12.

[0042] According to some embodiments of the utility model, the thickness of the wear reducing member 12 is s and satisfies: 0.5mm≤s≤1.0mm. Based on the functional requirements and performance optimization of the wear reducing member 12 in the application, the thickness s of the wear reducing member 12 is between 0.5mm and 1.0mm (including the boundary value). By setting the thickness s of the wear reducing member 12 between 0.5mm and 1.0mm, the wear reducing member 12 has sufficient durability and stability when subjected to friction, and can reduce costs without affecting performance, while also allowing the wear reducing member 12 to be easily installed on the drive shaft 11.

[0043] According to some embodiments of the utility model, the drive shaft assembly further includes a limiter, which is disposed at one end of the connecting portion 112 away from the main body portion 111, and the limiter is disposed around the outer circumferential surface of the connecting portion 112 and abuts against the wheel hub bearing to limit the movement of the wheel hub bearing. By providing the limiter, the limiter can limit the movement of the wheel hub bearing, so that the wheel hub bearing remains in a suitable position. Specifically, the limiter is installed at one end of the connecting portion 112 away from the drive shaft 11 and is disposed around the outer circumferential surface of the connecting portion 112. The contact between the limiter and the connecting portion 112 is tight, and a more stable limiting force can be provided. The limiter directly contacts the wheel hub bearing, and limits the movement of the wheel hub bearing by abutting, so that the wheel hub bearing can still maintain a suitable position under the action of various forces. Exemplarily, the limiter is configured as a limit nut.

[0044] The vehicle according to the present utility model is briefly described below.

[0045] The vehicle according to the utility model includes the drive shaft assembly in any one of the above embodiments. Since the vehicle according to the utility model includes the drive shaft assembly in any one of the above embodiments, the vehicle according to the utility model has a highly efficient, wear-reducing, stable and reliable drive shaft assembly, which can effectively reduce the friction between the drive shaft 11 and the wheel hub bearing, and improve driving stability and service life.

[0046] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0047] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A drive shaft assembly for a vehicle, characterized in that: include: A driving shaft (11), wherein the driving shaft (11) is formed with a main body portion (111) and a connecting portion (112), wherein the connecting portion (112) is located at one end of the main body portion (111); A wheel hub bearing, the wheel hub bearing being arranged around the outer peripheral surface of the connecting portion (112) and connected to the connecting portion (112); A wear-reducing member (12), wherein at least a portion of the wear-reducing member (12) is disposed around the outer peripheral surface of the main body (111) and at least another portion of the wear-reducing member (12) is respectively matched with the main body (111) and the wheel hub bearing on both sides in the axial direction; A snap-in groove (1111) extending in an annular manner and connected to each other end to end is formed on the outer peripheral surface of the main body (111), and a snap-in protrusion (1221) extending in an annular manner is formed on the wear-reducing component (12), and the snap-in protrusion (1221) is movably arranged in the snap-in groove (1111).

2. The drive shaft assembly according to claim 1, characterized in that: The snap-fitting protrusions (1221) are configured as a plurality of protrusions spaced apart in the circumferential direction, or the snap-fitting protrusions (1221) are configured as one protrusion connected end to end.

3. The drive shaft assembly according to claim 1, characterized in that: The wear reducing member (12) comprises: A friction portion (121), the friction portion (121) being formed with an annular hole (1211) suitable for the connection portion (112) to pass through, and the friction portion (121) is respectively matched with the body portion (111) and the wheel hub bearing on both sides in the thickness direction to stop; The matching portion (122) is arranged at the edge of the friction portion (121) and extends axially to surround the outer peripheral surface of the main body portion (111), and the clamping protrusion (1221) is formed on the matching portion (122).

4. The drive shaft assembly according to claim 3, characterized in that: The clamping protrusion (1221) is arranged at the free end of the matching portion (122), and the wear reducing member (12) is provided with a matching groove suitable for accommodating a part of the main body (111) between the clamping protrusion (1221) and the friction portion (121).

5. The drive shaft assembly according to claim 3, characterized in that: Both side surfaces of the friction portion (121) are coated with a wear-resistant layer.

6. The drive shaft assembly according to claim 4, characterized in that: The engaging protrusion (1221) extends radially outwardly in a direction away from the friction portion (121), and the free end abuts against the inner wall of the engaging groove (1111).

7. The drive shaft assembly according to claim 1, characterized in that: The wear reducing component (12) is constructed as an integrally formed component.

8. The drive shaft assembly according to claim 7, characterized in that: The thickness of the wear-reducing member (12) is s and satisfies: 0.5 mm ≤ s ≤ 1.0 mm.

9. The drive shaft assembly according to claim 1, characterized in that: It also includes a limiting member, which is arranged at one end of the connecting portion (112) away from the main body portion (111), and the limiting member is arranged around the outer peripheral surface of the connecting portion (112) and abuts against the wheel hub bearing to limit the movement of the wheel hub bearing.

10. A vehicle, characterized in that: A drive shaft assembly comprising any one of claims 1-9.

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