Automobile driving mechanism and automobile

Abstract

The utility model provides a kind of automobile driving mechanism and automobile, wherein a kind of automobile driving mechanism includes: driving shaft, with integrally formed output part and first shaft shoulder part, first shaft shoulder part has first contact surface;Hub bearing, with the inner ring and outer ring of mutual rotation connection, inner ring ring around set on output part, inner ring has second contact surface, second contact surface and first contact surface gap setting, outer ring rotatably set on the outer wall of inner ring;Steering piece, ring around set on outer ring, steering piece extends towards inner ring, and with second contact surface gap setting, form annular gap;Abrasion-reducing assembly, ring around set on first shaft shoulder part, between first contact surface and second contact surface, and simultaneously with first contact surface and second contact surface abut, abrasion-reducing assembly has a dustproof part, dustproof part extends in the direction away from abrasion-reducing assembly, and with steering piece gap setting, for covering annular gap, prevent foreign matter into annular gap close to hub bearing.

Description

Technical Field

[0001] This utility model relates to the field of automotive parts technology, and in particular to an automotive drive mechanism and an automotive. Background Technology

[0002] The existing vehicle drive force transmission path is as follows: engine power is transmitted to the transmission, then to the drive shaft, then to the wheel bearings, and finally to the wheels. The drive shaft and wheel bearings are fixed together by axle nuts. Both the drive shaft and wheel bearing mating surfaces are machined surfaces, bearing significant normal pressure during drive force transmission. Furthermore, the drive shaft and wheel bearings are connected by internal and external splines. When the vehicle starts from a standstill, especially under heavy throttle, the driving torque is large. At this time, the internal and external spline mating surfaces undergo slight deformation, resulting in small-angle circumferential slippage between the drive shaft and wheel bearing mating surfaces. This friction between the mating surfaces produces abnormal noise, a phenomenon known as vehicle start-up noise.

[0003] According to the drive shaft assembly and wheel hub bearing connection structure disclosed in publication number CN 215096810 U, a technical solution is described in which a friction-reducing layer is set between the wheel hub bearing and the drive shaft to avoid rigid friction between the two. However, the existing friction-reducing pads have a single function, do not have a dustproof effect, and cannot protect the wheel hub bearing.

[0004] Therefore, a car drive mechanism and a car are proposed to solve the technical problem that the existing anti-friction pads have a single function, lack dust prevention effect, and cannot protect the wheel hub bearings. Utility Model Content

[0005] In view of this, the present invention proposes an automobile drive mechanism and automobile, which has a wear reduction function and a dust prevention effect, and can protect the wheel hub bearing.

[0006] This utility model proposes an automobile drive mechanism, comprising:

[0007] The drive shaft has an integrally formed output portion and a first shoulder portion, the first shoulder portion having a first contact surface;

[0008] A hub bearing has an inner ring and an outer ring that are rotatably connected to each other. The inner ring is sleeved around the output part and has a second contact surface. The second contact surface is spaced apart from the first contact surface. The outer ring is rotatably disposed on the outer wall of the inner ring.

[0009] A steering component is sleeved around the outer ring, the steering component extends toward the inner ring, and is spaced apart from the inner ring to form an annular gap;

[0010] The friction-reducing component is sleeved around the first shaft shoulder, located between the first contact surface and the second contact surface, and simultaneously abuts against both the first and second contact surfaces. The friction-reducing component has a dustproof part that extends away from the friction-reducing component and is spaced apart from the steering component to cover the annular gap and prevent foreign objects from entering the annular gap and approaching the wheel hub bearing.

[0011] Based on the above technical solution, preferably, the wear-reducing component includes:

[0012] The connector is arranged around the first shaft shoulder;

[0013] A wear-reducing pad is disposed on the connector and located between the first contact surface and the second contact surface to reduce wear between the inner ring and the first shaft shoulder.

[0014] A dustproof component is annularly disposed at the end of the connector away from the friction-reducing plate. The dustproof component extends outward along the radial direction of the connector and is spaced apart from the steering component. The dustproof component serves as the dustproof part.

[0015] Based on the above technical solution, preferably, the drive shaft also has a second shoulder, the second shoulder is located on the side of the first shoulder away from the hub bearing, and the side of the second shoulder facing the hub bearing has a mounting surface;

[0016] The dustproof component is spaced apart from the mounting surface.

[0017] Based on the above technical solution, preferably, the dustproof component includes:

[0018] A radially extending ring is disposed at the end of the connector away from the wear-reducing plate, and is spaced apart from the mounting surface;

[0019] An axially extending ring has one end disposed on the radially extending ring and the other end extending axially toward the steering member along the connecting member and being spaced apart from the steering member. The connecting member, the radially extending ring, and the axially extending ring form an annular space, which is larger than the annular gap.

[0020] Based on the above technical solution, preferably, the outer wall of the output part is further provided with a plurality of positioning grooves;

[0021] The wear-reducing assembly also includes several locking members, one end of each locking member being located at the end of the wear-reducing plate away from the connecting member, and the other end of each locking member extending into the positioning groove.

[0022] Based on the above technical solution, preferably, the outer wall of the output part is provided with a plurality of positioning parts at circumferential intervals;

[0023] The wear-reducing assembly also includes several locking members, one end of each locking member being located at the end of the wear-reducing plate away from the connecting member, and the other end of each locking member extending into the gap between two adjacent positioning portions.

[0024] Based on the above technical solution, preferably, the connector, the wear-reducing plate, the dustproof component, and the locking component are integrally formed.

[0025] Based on the above technical solution, preferably, the connector is interference-fitted with the first shaft shoulder.

[0026] Based on the above technical solutions, the preferred embodiment also includes:

[0027] A magnetic encoder is disposed at one end of the outer ring near the annular gap.

[0028] On the other hand, this application also provides a vehicle equipped with the aforementioned vehicle drive mechanism.

[0029] The automobile drive mechanism and automobile provided by this utility model have the following advantages compared with the prior art:

[0030] (1) Since the steering component will not rotate continuously, while the inner ring will rotate synchronously with the drive shaft, the second contact surface between the steering component and the inner ring maintains an annular gap. A friction-reducing component is provided on the drive shaft, and the dustproof part of the friction-reducing component can cover the annular gap, which can prevent foreign objects from entering the annular gap, thereby ensuring the normal rotation of the inner and outer rings and playing an effective protective role.

[0031] (2) The wear-reducing plate is surrounded on the first shaft shoulder by the connector and is held between the first contact surface and the second contact surface, so that the wear-reducing plate can reduce the wear between the inner ring and the first shaft shoulder, and play a normal role in reducing wear and lubricating the inner ring and the drive shaft; In addition, the dustproof component extends radially toward the steering component along the connector and covers the annular gap, and is spaced apart from the steering component. In this way, the wear-reducing component has both wear-reducing and dustproof effects, which can avoid the need to repeatedly install other dustproof or wear-reducing structures on the drive shaft.

[0032] (3) The locking component can extend and fit on the drive shaft, thereby ensuring that the anti-friction component is stably fixed on the drive shaft and will not rotate relative to the drive shaft. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a cross-sectional view of an automobile drive mechanism according to the present invention.

[0035] Figure 2 This utility model Figure 1 Enlarged view of point A in the middle;

[0036] Figure 3 This is an exploded view of the wear-reducing component of this utility model installed on the drive shaft;

[0037] Figure 4 This is a perspective view of a friction-reducing component in an automotive drive mechanism according to the present invention.

[0038] Figure 5 This is a three-dimensional diagram of a car drive mechanism.

[0039] Reference numerals: 1. Anti-friction component; 11. Connector; 12. Anti-friction plate; 13. Dustproof component; 131. Radial extension ring; 132. Axial extension ring; 14. Locking component; 100. Drive shaft; 110. Output section; 120. First shaft shoulder; 1201. First contact surface; 130. Second shaft shoulder; 1301. Mounting surface; 200. Hub bearing; 210. Inner ring; 220. Outer ring; 201. Second contact surface; 300. Steering component; 301. Annular gap; 400. Magnetic encoder; 101. Annular space. Detailed Implementation

[0040] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0041] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0042] In the description of the embodiments of this utility model, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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 the embodiments of 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 the embodiments of this utility model.

[0043] 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.

[0044] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this utility model, and should not be construed as limiting this utility model.

[0045] The following disclosure provides numerous different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. These are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples. Such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, examples of various specific processes and materials are provided in this invention; however, those skilled in the art will recognize the applicability of other processes and / or the use of other materials.

[0046] The technical solution is explained below. Existing solutions disclose the use of a friction-reducing layer between the wheel hub bearing and the drive shaft to prevent rigid friction between them. However, existing friction-reducing sheets have limited functionality, lacking dust protection and thus failing to protect the wheel hub bearing. Therefore, as... Figure 1 and Figure 2 As shown, this utility model provides an automobile drive mechanism, including:

[0047] The drive shaft 100 has an integrally formed output portion 110 and a first shoulder portion 120, the first shoulder portion 120 having a first contact surface 1201;

[0048] The hub bearing 200 has an inner ring 210 and an outer ring 220 that are rotatably connected to each other. The inner ring 210 is sleeved around the output part 110. The inner ring 210 has a second contact surface 201. The second contact surface 201 is separated from the first contact surface 1201. The outer ring 220 is rotatably disposed on the outer wall of the inner ring 210.

[0049] The steering component 300 is sleeved around the outer ring 220, and the steering component 300 extends toward the inner ring 210 and is spaced apart from the inner ring 210 to form an annular gap 301.

[0050] The friction reduction component 1 is sleeved around the first shaft shoulder 120, located between the first contact surface 1201 and the second contact surface 201, and simultaneously abuts against the first contact surface 1201 and the second contact surface 201. The friction reduction component 1 has a dustproof part that extends away from the friction reduction component 1 and is spaced apart from the steering member 300 to cover the annular gap 301 and prevent foreign objects from entering the annular gap 301.

[0051] Since the steering component 300 does not rotate continuously, while the inner ring 210 rotates synchronously with the drive shaft 100, the second contact surface 201 between the steering component 300 and the inner ring 210 maintains an annular gap 301. A friction-reducing component 1 is provided on the drive shaft 100, and the dustproof part of the friction-reducing component 1 can cover the annular gap 301, preventing foreign objects from entering the annular gap 301, thereby ensuring the normal rotation of the inner ring 210 and the outer ring 220 and playing an effective protective role.

[0052] To fix the friction reduction component 1 to the drive shaft 100, the friction reduction component 1 includes:

[0053] Connector 11 is disposed around the first shaft shoulder 120;

[0054] The wear-reducing plate 12 is disposed on the connector 11 and located between the first contact surface 1201 and the second contact surface 201, and is used to reduce the wear between the inner ring 210 and the first shoulder 120.

[0055] The dustproof component 13 is annularly disposed at the end of the connector 11 away from the friction reducing plate 12. The dustproof component 13 extends outward along the radial direction of the connector 11 and is spaced apart from the turning component 300. The dustproof component 13 serves as a dustproof part.

[0056] The connecting member 11 is arranged around the first shaft shoulder 120, and the wear-reducing plate 12 is held between the first contact surface 1201 and the second contact surface 201. The wear-reducing plate 12 can reduce the wear between the inner ring 210 and the first shaft shoulder 120, and play a normal role in reducing wear and lubricating the inner ring and the drive shaft. In addition, the dustproof member 13 extends radially towards the steering member 300 along the connecting member 11 and covers the annular gap 301, and is spaced apart from the steering member 300. In this way, the wear-reducing component has both wear-reducing and dustproof effects, which can avoid the need to repeatedly install other dustproof or wear-reducing structures on the drive shaft 100.

[0057] like Figure 2 As shown, in order to ensure that the dustproof part 13 effectively covers the annular gap 301, the drive shaft 100 also has a second shaft shoulder 130, which is located on the side of the first shaft shoulder 120 away from the hub bearing 200, and the side of the second shaft shoulder 130 facing the hub bearing 200 has a mounting surface 1301.

[0058] The dustproof component 13 and the mounting surface 1301 are separated by a gap.

[0059] When the drive shaft 100 and the hub bearing 200 slide at a small angle in the circumferential direction, the steering component 300 will also rotate synchronously since it is fixed on the hub bearing 200. The dustproof component 13 is spaced apart from the steering component 300, so the dustproof component 13 will not obstruct the rotation of the steering component 300. Moreover, the gap between the dustproof component 13 and the second axle shoulder 130 of the drive shaft 100 can also provide clearance for further offset of the steering component 300. Therefore, even if the steering component 300 abuts against the dustproof component 13, the dustproof component 13 can still offset toward one side of the second axle shoulder 130.

[0060] like Figure 4 As shown, in order to ensure that the dustproof component 13 stably covers the annular gap 301, the dustproof component 13 includes:

[0061] A radially extending ring 131 is disposed at the end of the connector 11 away from the wear-reducing plate 12 and is spaced apart from the mounting surface 1301;

[0062] The axial extension ring 132 has one end disposed on the radial extension ring 131 and the other end extends along the axial direction of the connector 11 toward the steering member 300 and is spaced apart from the steering member 300. The connector 11, the radial extension ring 131 and the axial extension ring 132 form an annular space 101, which is larger than the annular gap 301.

[0063] Specifically, the dustproof component 13 extends radially outward on the connector 11 and then extends axially toward the steering component 300 to form an annular space 101. This annular space 101 can effectively cover the annular gap 301. Furthermore, the dustproof component 13 has a hollow design and can be offset toward the second shaft shoulder 130.

[0064] like Figure 3 As shown, in order to ensure that the friction reduction component 1 does not rotate relative to the drive shaft 100, the outer wall of the output part 110 is also provided with several positioning grooves.

[0065] The wear reduction assembly 1 also includes a plurality of locking members 14. One end of each locking member 14 is disposed at the end of the wear reduction plate 12 away from the connector 11, and the other end of each locking member 14 extends into the positioning groove to maintain the position of the wear reduction plate 12 relative to the output part 110.

[0066] Specifically, in Figure 3 In this assembly, there are three locking elements 14. The three locking elements 14 are circumferentially distributed at one end of the wear-reducing plate 12 and extend toward the axial center line of the drive shaft 100. The locking elements 14 can extend and fit on the drive shaft 100, thereby ensuring that the wear-reducing assembly 1 is stably fixed on the drive shaft 100 and will not rotate relative to the drive shaft 100.

[0067] In another embodiment of this utility model, in order to ensure that the wear reduction component 1 does not rotate relative to the drive shaft 100, a number of positioning parts are provided at intervals on the outer circumference of the output part 110.

[0068] The wear reduction assembly 1 also includes a plurality of locking members 14, one end of each locking member 14 being disposed at the end of the wear reduction plate 12 away from the connector 11, and the other end of each locking member 14 extending to the gap between two adjacent positioning portions, for maintaining the position of the wear reduction plate 12 relative to the output portion 110.

[0069] Unlike the previous embodiment which provided a positioning groove on the drive shaft 100, this embodiment provides a protruding positioning part on the drive shaft 100 and extends the locking member 14 into the gap between two adjacent positioning parts, thereby preventing the locking member 14 from rotating relative to the drive shaft 100; more specifically, the gap between two adjacent positioning parts is adapted to the width of the locking member 14, which can effectively lock the rotation of the locking member 14.

[0070] like Figure 4 As shown, the wear-reducing component 1 is integrally formed, and the connector 11, wear-reducing plate 12, dustproof component 13 and locking component 14 are integrally formed.

[0071] The one-piece molding of the friction reduction component 1 can eliminate the connection gaps between multiple component structures, thereby improving overall rigidity and stability.

[0072] like Figure 3 As shown, in order to ensure that the connector 11 is stably fixed to the first shaft shoulder 120, the connector 11 is interference-fitted with the first shaft shoulder 120.

[0073] The connector 11 is annular and is fitted around the first shaft shoulder 120, so that there is no risk of loosening between the connector 11 and the first shaft shoulder 120. After assembly, the two are tightly fitted by interference fit, which can avoid relative movement.

[0074] The working principle of this anti-friction component is as follows: the connecting member 11 is pre-fitted onto the first shaft shoulder 120, while the anti-friction plate 12 is attached to the first contact surface 1201. Furthermore, the locking member 14 is locked to the positioning groove or positioning part, ensuring that the connecting member 11 and the anti-friction plate 12 do not rotate relative to the drive shaft 100. When a hub bearing 200 and a steering component 300 are connected to the outside of the drive shaft 100, the dustproof component 13 is spaced apart from the steering component 300 and blocks the annular gap 301.

[0075] The aforementioned automotive drive mechanism also includes a magnetic encoder 400, which is disposed at one end of the outer ring 220 near the annular gap 301 and is used to detect wheel information. The magnetic encoder 400 can monitor parameters such as rotation angle, position, and speed in real time, providing key data support for the precise control of various automotive systems.

[0076] The working principle of this automotive drive mechanism is that the dustproof part 13 of the drive shaft 100 blocks the annular gap 301, preventing foreign objects from entering the annular gap 301 and avoiding foreign objects from affecting the rotation between the inner ring 210 and the outer ring 220. At the same time, it also protects the magnetic encoder 400, enabling the magnetic encoder 400 to stably monitor parameters such as rotation angle, position, and speed in real time, providing key data support for the precise control of various automotive systems.

[0077] On the other hand, this utility model also provides a car equipped with the aforementioned car drive mechanism.

[0078] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A vehicle drive mechanism, characterized in that, include: The drive shaft (100) has an integrally formed output portion (110) and a first shoulder portion (120), the first shoulder portion (120) having a first contact surface (1201). The hub bearing (200) has an inner ring (210) and an outer ring (220) that are rotatably connected to each other. The inner ring (210) is sleeved around the output part (110). The inner ring (210) has a second contact surface (201) and the second contact surface (201) is separated from the first contact surface (1201). The outer ring (220) is rotatably disposed on the outer wall of the inner ring (210). A steering component (300) is sleeved around the outer ring (220), the steering component (300) extends toward the inner ring (210) and is spaced apart from the inner ring (210) to form an annular gap (301). The friction reduction component (1) is sleeved around the first shoulder (120) and located between the first contact surface (1201) and the second contact surface (201), and simultaneously abuts against the first contact surface (1201) and the second contact surface (201). The friction reduction component (1) has a dustproof part that extends toward the steering member (300) and is spaced apart from the steering member (300) to cover the annular gap (301) and prevent foreign objects from entering the annular gap (301).

2. The automobile drive mechanism as described in claim 1, characterized in that, The wear reduction component (1) includes: A connector (11) is disposed around the first shaft shoulder (120); A wear-reducing plate (12) is disposed on the connector (11) and located between the first contact surface (1201) and the second contact surface (201) to reduce wear between the inner ring (210) and the first shoulder (120); A dustproof component (13) is annularly disposed at one end of the connector (11) away from the friction reducing plate (12). The dustproof component (13) extends outward along the radial direction of the connector (11) and is spaced apart from the steering component (300). The dustproof component (13) serves as the dustproof part.

3. The automobile drive mechanism as described in claim 2, characterized in that, The drive shaft (100) also has a second shoulder (130) located on the side of the first shoulder (120) away from the hub bearing (200), and the second shoulder (130) has a mounting surface (1301) on the side facing the hub bearing (200). The dustproof component (13) and the mounting surface (1301) are separated by a gap.

4. The automobile drive mechanism as described in claim 3, characterized in that, The dustproof component (13) includes: A radially extending ring (131) is disposed at one end of the connector (11) away from the wear-reducing plate (12) and is spaced apart from the mounting surface (1301); An axially extending ring (132) has one end disposed on the radially extending ring (131) and the other end extending along the axial direction of the connector (11) toward the steering member (300) and is spaced apart from the steering member (300). The connector (11), the radially extending ring (131) and the axially extending ring (132) form an annular space (101), which is larger than the annular gap (301).

5. The automobile drive mechanism as described in claim 2, characterized in that, The outer wall of the output section (110) is also provided with several positioning grooves; The wear reduction component (1) also includes a plurality of locking members (14), one end of each of the plurality of locking members (14) is disposed at the end of the wear reduction plate (12) away from the connector (11), and the other end of the plurality of locking members (14) extends into the positioning groove.

6. The automobile drive mechanism as described in claim 2, characterized in that, The outer wall of the output section (110) is provided with a plurality of positioning parts at intervals around its circumference; The wear reduction assembly (1) also includes a plurality of locking members (14), one end of each of the plurality of locking members (14) is disposed at the end of the wear reduction plate (12) away from the connector (11), and the other end of the plurality of locking members (14) extends to the gap between two adjacent positioning parts.

7. The automobile drive mechanism as described in claim 5 or 6, characterized in that, The connector (11), the wear-reducing plate (12), the dustproof component (13), and the locking component (14) are integrally formed.

8. The automobile drive mechanism as described in claim 2, characterized in that, The connector (11) is interference-fitted with the first shaft shoulder (120).

9. The automobile drive mechanism as described in claim 1, characterized in that, Also includes: A magnetic encoder (400) is disposed at one end of the outer ring (220) near the annular gap (301).

10. A car, characterized in that, The vehicle is equipped with a vehicle drive mechanism as described in any one of claims 1-9.

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