Sealing structure, steering drive axle and vehicle

Abstract

The utility model relates to the technical field of vehicle parts, and discloses a sealing structure, a steering drive axle and a vehicle, the sealing structure comprises: a housing provided with a mounting through hole; at least part of the structure of the half shaft is arranged in the mounting through hole in a penetrating manner, and the half shaft is movably connected with the shell; the oil seal is hermetically matched between the inner wall of the mounting through hole and the half shaft; the baffle ring is located on the outer side of the oil seal in the axial direction of the half shaft; the baffle ring is connected with the inner wall of the mounting through hole, and the half shaft penetrates through the baffle ring. According to the technical scheme, the baffle ring is arranged on the outer side of the oil seal, external dust, silt and other impurities can be blocked, the oil seal and the half shaft are protected, abrasion of the external impurities to the oil seal is reduced or even eliminated, the service life of the oil seal is prolonged, the problems that particles are prone to being attached to the half shaft, and foreign matter is prone to being wound are solved, and the service life of the half shaft is prolonged. And therefore, the sealing stability is improved.

Description

Technical Field

[0001] This utility model relates to the field of vehicle component technology, specifically to a sealing structure, a steering drive axle, and a vehicle. Background Technology

[0002] In a vehicle's steering drive axle, the seal between the half-shaft and the housing is crucial. However, the traditional sealing structure is poorly designed, resulting in poor sealing stability. For example, during vehicle operation, external dust, mud, and other impurities can easily enter the connection between the half-shaft and the housing, wearing down the oil seal between them, affecting the sealing effect, and reducing the reliability and service life of the steering drive axle. Utility Model Content

[0003] In view of this, the present invention provides a sealing structure for use in a steering drive axle, a steering drive axle having the sealing structure, and a vehicle, to solve the problem of poor sealing stability of traditional sealing structures.

[0004] Firstly, this utility model provides a sealing structure applied to a steering drive axle, comprising: a housing with a mounting through hole; a half-shaft, at least a portion of which passes through the mounting through hole and is movably connected to the housing; an oil seal, sealingly fitted between the inner wall of the mounting through hole and the half-shaft; and a retaining ring, located axially along the half-shaft and outside the oil seal; the retaining ring is connected to the inner wall of the mounting through hole, and the half-shaft passes through the retaining ring. The technical solution of this utility model, by setting a retaining ring on the outside of the oil seal, can block external dust, mud, and other impurities, thus protecting the oil seal and half-shaft, reducing or even eliminating wear on the oil seal caused by external impurities, improving the service life of the oil seal, and solving problems such as easy adhesion of particles and entanglement of foreign matter on the half-shaft, thereby improving the stability of the seal.

[0005] In one optional embodiment, the outer peripheral wall of the retaining ring is interference-fitted with the inner wall of the mounting through hole, ensuring a tight fit and preventing loosening, thus further enhancing the stability of the entire sealing structure. Furthermore, since the retaining ring is located outside the oil seal, the interference fit between the retaining ring and the mounting through hole does not affect the mating surface between the oil seal and the mounting through hole, thereby avoiding damage to the oil seal mating surface and ensuring the reliability of the seal.

[0006] In one optional embodiment, a first gap of 0.05-0.5mm is provided between the inner peripheral wall of the retaining ring and the outer peripheral wall of the half shaft, which can effectively block larger hard particles, entangled foreign objects, etc., and improve the reliability of the protection of the oil seal and the half shaft.

[0007] In one optional embodiment, a second gap is provided between the oil seal and the retaining ring along the axial direction of the half-shaft to form a relatively clean cavity between the oil seal and the retaining ring. When the half-shaft has axial movement, the half-shaft moves axially inside the relatively clean cavity, and its surface is less likely to adhere to hard particles or become entangled with foreign matter, further reducing or even eliminating wear caused by foreign matter during relative movement between the half-shaft and the oil seal, and improving the reliability of the sealing structure.

[0008] In one optional embodiment, the retaining ring has an axially extending connecting portion located below the half-shaft and communicating with the second gap. It should be noted that "below the half-shaft" specifically means below the half-shaft in the direction of gravity. This allows impurities such as mud and sand entering between the retaining ring and the oil seal to be discharged through the connecting portion under gravity, preventing impurities from accumulating between the oil seal and the retaining ring and causing wear on critical components such as the oil seal or the half-shaft.

[0009] In one optional embodiment, the retaining ring includes a thin-walled portion and a thick-walled portion arranged and connected sequentially from the inside to the outside in a radial direction, and the connecting portion is a groove formed in the thick-walled portion. This structural design is reasonable, ensuring both the structural strength of the retaining ring and the sewage discharge function of the connecting portion.

[0010] In one optional embodiment, a rotating support is further included. The rotating support is located on the side of the oil seal away from the retaining ring. The rotating support is connected to the inner wall of the mounting through hole and has a clearance fit with the outer peripheral wall of the half-shaft. The rotating support can provide support for the half-shaft, ensuring the stability of the half-shaft during rotation or combined motion.

[0011] In one optional embodiment, the mounting through hole includes a first section, a second section, and a third section arranged sequentially along the axial direction. The diameter of the first section is smaller than that of the second section, and the diameter of the second section is smaller than that of the third section. A rotating support is disposed in the first section, an oil seal is disposed in the second section, and a retaining ring is disposed in the third section. This segmented structural design facilitates the installation and positioning of each component and also helps to improve the overall integrity of the sealing structure.

[0012] Secondly, the present invention also provides a steering drive axle, comprising: a sealing structure as described above; wherein the half-shaft is an outer half-shaft and the housing is a steering knuckle; and / or, the half-shaft is an inner half-shaft and the housing is an axle housing; the outer half-shaft and the inner half-shaft are rotatably connected.

[0013] By adopting the above-mentioned sealing structure, the steering drive axle of this utility model effectively improves the sealing performance of the steering drive axle, reduces the damage of impurities to the internal components of the steering drive axle, and improves the reliability and service life of the steering drive axle.

[0014] Thirdly, the present invention also provides a vehicle, including: the sealing structure as described above; or, the steering drive axle as described above.

[0015] The vehicle of this invention utilizes the aforementioned sealing structure or rotating drive axle, thereby optimizing the reliability of the seal, reducing the failure rate caused by seal failure and other problems, and improving the overall quality of the vehicle and the user experience. Attached Figure Description

[0016] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 This is a partial cross-sectional view of a steering drive axle according to an embodiment of the present utility model;

[0018] Figure 2 This is a cross-sectional view of a sealing structure according to an embodiment of the present utility model;

[0019] Figure 3 for Figure 2 A magnified view of part A in the diagram;

[0020] Figure 4 This is a cross-sectional view of another sealing structure according to an embodiment of the present utility model;

[0021] Figure 5 This is a perspective view of a retaining ring according to an embodiment of the present utility model;

[0022] Figure 6 This is a plan view of a retaining ring according to an embodiment of the present utility model.

[0023] Explanation of reference numerals in the attached figures:

[0024] 1. Half shaft; 11. Outer half shaft; 12. Inner half shaft; 2. Housing; 20. Mounting through hole; 201. First section; 202. Second section; 203. Third section; 21. Steering knuckle; 22. Axle housing; 3. Rotating support component; 4. Oil seal; 41. Frame; 42. First sealing ring; 43. Second sealing ring; 44. Third sealing ring; 5. Retaining ring; 51. Connecting part; 52. Thin-walled part; 53. Thick-walled part; 6. Universal joint; 7. Upper kingpin; 8. Upper kingpin bushing; 9. Lower kingpin; 10. Lower kingpin bearing. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments 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 protection scope of this utility model.

[0026] The following is combined with Figures 1 to 6 The following describes embodiments of the present invention.

[0027] According to an embodiment of the present invention, a sealing structure for use in a steering drive axle is provided. The sealing structure includes a housing 2, a half-shaft 1 movably connected within the housing 2, and an oil seal 4 and a retaining ring 5 disposed between the housing 2 and the half-shaft 1.

[0028] Specifically, such as Figures 1-4 The housing 2 has a mounting through hole 20, and at least a portion of the structure of the half-shaft 1 passes through the mounting through hole 20 and is movably connected to the housing 2. An oil seal 4 is fitted onto the half-shaft 1 and seals between the inner wall of the mounting through hole 20 and the half-shaft 1, providing the primary sealing function to prevent external impurities from entering and internal lubricating oil from leaking. A retaining ring 5 is located axially along the half-shaft 1 outside the oil seal 4. The retaining ring 5 is connected to the inner wall of the mounting through hole 20, and the half-shaft 1 passes through the retaining ring 5. The retaining ring 5 further blocks impurities and protects the oil seal 4.

[0029] It should be noted that, Figure 1 , Figure 2 and Figure 4 In the diagram, the axial direction of half-shaft 1 specifically refers to the up-down direction, and the radial direction of half-shaft 1 specifically refers to the left-right direction. Figure 3 In the diagram, the axial direction of half-shaft 1 specifically refers to the left-right direction, and the radial direction of half-shaft 1 specifically refers to the up-down direction.

[0030] Understandably, in this embodiment, both the oil seal 4 and the retaining ring 5 are annular structures and are fitted together between the inner wall of the mounting through hole 20 of the housing 2 and the outer peripheral wall of the half shaft 1.

[0031] In this embodiment, by setting a retaining ring 5 on the outside of the oil seal 4, external dust, mud and other impurities can be blocked, which can protect the oil seal 4 and the half shaft 1, reduce or even eliminate the wear of external impurities on the oil seal 4, improve the service life of the oil seal 4, and solve the problems of easy adhesion of particles and entanglement of foreign objects on the half shaft 1, thereby improving the stability of the seal.

[0032] Furthermore, the movable connection method between the half-shaft 1 and the housing 2 depends on the actual application requirements. For example, the half-shaft 1 can be rotatably connected to the housing 2 around its own axis, that is, the half-shaft 1 can rotate. For example, the half-shaft 1 can also be rotatably connected to the housing 2 around its own axis and movable along the axial direction, that is, the half-shaft 1 can perform a combination of rotation and axial movement.

[0033] Furthermore, the half-shaft 1 has a first end and a second end that are axially opposite each other. The first end is located outside the housing 2 and is used for drive connection with the wheel housing via a flange or spline, or for drive connection with the gear of the differential half-shaft 1 via a spline. The second end passes through the mounting through hole 20 and is movably connected to the housing 2. Specifically, the retaining ring 5 is located outside the oil seal 4, meaning it is located on the side of the oil seal 4 closer to the second end.

[0034] For example, half-shaft 1 can be an outer half-shaft 11. The first end of the outer half-shaft 11 is located outside the housing 2 and is driven to the wheel housing via a flange or spline. The second end of the outer half-shaft 11 passes through the mounting hole 20 of the housing 2 and is rotatably connected to the inner half-shaft 12 via a universal joint 6. For example, half-shaft 1 can be an inner half-shaft 12. The first end of the inner half-shaft 12 is located outside the housing 2 and is driven to the differential half-shaft 1 via a spline or other means. The second end of the outer half-shaft 11 passes through the mounting hole 20 of the housing 2 and is rotatably connected to the outer half-shaft 11 via a universal joint 6.

[0035] More specifically, in some embodiments, the outer peripheral wall of the retaining ring 5 is interference-fitted with the inner wall of the mounting through hole 20 to fix the retaining ring 5 within the mounting through hole 20. This tight installation prevents loosening and further enhances the stability of the entire sealing structure. Furthermore, since the retaining ring 5 is located outside the oil seal 4, the interference fit between the retaining ring 5 and the mounting through hole 20 does not affect the mating surface between the oil seal 4 and the mounting through hole 20, thereby avoiding damage to the mating surface of the oil seal 4 and ensuring the reliability of the seal.

[0036] Furthermore, the inner diameter of the retaining ring 5 is slightly larger than the outer diameter of the half-shaft 1 it mates with, so as to form a small gap between the two. Specifically, a first gap is provided between the inner peripheral wall of the retaining ring 5 and the outer peripheral wall of the half-shaft 1 along the radial direction. The first gap can be 0.05-0.5mm, which can effectively block larger hard particles, entangled foreign objects, etc., and improve the reliability of protection for the oil seal 4 and the half-shaft 1.

[0037] In some embodiments, a second gap is provided between the oil seal 4 and the retaining ring 5 along the axial direction of the half-shaft 1. For example... Figure 3As shown, specifically, a second gap is provided between the end face of the oil seal 4 near the retaining ring 5 and the end face of the retaining ring 5 near the oil seal 4 along the axial direction, so as to form a relatively clean cavity between the oil seal 4 and the retaining ring 5. When the half shaft 1 has axial movement, the half shaft 1 moves axially inside the relatively clean cavity, and its surface is not prone to hard particles adhering or foreign matter getting entangled, further reducing or even eliminating wear caused by foreign matter during relative movement between the half shaft 1 and the oil seal 4, and improving the reliability of the sealing structure.

[0038] Furthermore, the size of the second gap is greater than or equal to the axial movement of half-shaft 1. Specifically, the size of the second gap refers to... Figure 3 In this context, S refers to the axial movement specifically, which is the total displacement of the half-shaft 1 along the axial direction during operation.

[0039] In some embodiments, the axial movement of the half-shaft 1 is 1-10 mm, preferably 4-6 mm. For example, the axial movement of the half-shaft 1 can be 5 mm, in which case the size of the second gap in the sealing structure is greater than or equal to 5 mm. In this embodiment, the size of the second gap being greater than or equal to the axial movement of the half-shaft 1 ensures that the half-shaft 1 can still receive good protection even with a certain amount of movement.

[0040] Understandably, in some cases, half-shaft 1 only rotates, that is, its axial movement is zero, and in this case, the second clearance S can be greater than or equal to zero.

[0041] In some embodiments, the retaining ring 5 has a through-hole 51 extending axially. The through-hole 51 is located below the half-shaft 1 and communicates with the second gap. It should be noted that the through-hole 51 being located below the half-shaft 1 specifically means being located below the half-shaft 1 in the direction of gravity. In this way, impurities such as mud and sand entering between the retaining ring 5 and the oil seal 4 can be discharged through the through-hole 51 under the action of gravity, i.e., according to... Figure 2 and Figure 4 The impurities are discharged in the direction shown by route B to prevent them from accumulating between the oil seal 4 and the retaining ring 5 and causing wear on key components such as the oil seal 4 or the half shaft 1.

[0042] Specifically, in some embodiments, such as Figure 6 As shown, the maximum distance between the axis of the connecting part 51 and the axis of the retaining ring 5 is L1, and the minimum distance is L2. The minimum distance L2 between the axis of the connecting part 51 and the axis of the retaining ring 5 can be greater than the radius of the inner circumference of the oil seal 4 and less than the radius of the outer circumference of the oil seal 4, to ensure that the connecting part 51 is connected to the second gap. The maximum distance L1 between the axis of the connecting part 51 and the axis of the retaining ring 5 can be greater than the radius of the outer circumference of the oil seal 4, to increase the size of the connecting part 51 and enhance its sewage discharge capacity.

[0043] In some embodiments, such as Figure 6As shown, the width of the retaining ring 5 in its circumferential direction is W, which can be 1-5mm, ensuring effective discharge of dirt without affecting the dustproof function of the retaining ring 5.

[0044] Furthermore, in some embodiments, such as Figure 5 and Figure 6 As shown, the retaining ring 5 includes a thin-walled portion 52 and a thick-walled portion 53 arranged and connected sequentially from the inside to the outside in a radial direction. At the end near the oil seal 4, the end face of the thin-walled portion 52 is parallel to the end face of the thick-walled portion 53; at the end away from the oil seal 4, the end face of the thin-walled portion 52 is recessed into the end face of the thick-walled portion 53 to avoid interference with the second end of the half-shaft 1.

[0045] Furthermore, the aforementioned connecting portion 51 can be a groove formed on the thick-walled portion 53. Placing the connecting portion 51 on the thin-walled portion 52 ensures both the structural strength of the retaining ring 5 and the drainage function of the connecting portion 51. Furthermore, designing the connecting portion 51 as a groove simplifies the structure and facilitates its manufacturing.

[0046] For example, the groove can be a U-shaped groove, a right-angled groove, a V-shaped groove, a trapezoidal groove, etc.

[0047] Furthermore, in some embodiments, the oil seal 4 may include a skeleton 41 and a first sealing ring 42, a second sealing ring 43, and a third sealing ring 44 disposed within the skeleton 41, wherein the first sealing ring 42, the second sealing ring 43, and the third sealing ring 44 are arranged sequentially along the axial direction. The outer peripheral wall of the skeleton 41 may be press-fitted to the inner wall of the mounting through hole 20, such as by a press-fitting process. The sealing lips of the first sealing ring 42, the second sealing ring 43, and the third sealing ring 44 are tightly fitted to the outer peripheral wall of the half-shaft 1.

[0048] Understandably, the oil seal 4 can also adopt other structures. This utility model does not specifically limit the structure of the oil seal 4, as long as it can perform the corresponding sealing function.

[0049] In some embodiments, the sealing structure further includes a rotating support 3, which is located on the side of the oil seal 4 away from the retaining ring 5. The rotating support 3 is connected to the inner wall of the mounting through hole 20 and has a clearance fit with the outer peripheral wall of the half shaft 1. The rotating support 3 can provide support for the half shaft 1, ensuring the stability of the half shaft 1 during rotation or combined motion.

[0050] For example, the rotating support 3 can be a bushing, a bearing (such as a needle roller bearing), etc. For example, the outer peripheral wall of the rotating support 3 can be interference-fitted with the inner wall of the mounting through hole 20, such as by press-fitting into the mounting through hole 20.

[0051] Understandably, the rotating support 3 is sleeved on the side of the half shaft 1 away from the second end, that is, away from the retaining ring 5. Along the axial direction of the half shaft 1, the oil seal 4 is located between the rotating support 3 and the retaining ring 5.

[0052] In some embodiments, such as Figure 3 As shown, the mounting through hole 20 includes a first section 201, a second section 202, and a third section 203 arranged sequentially along the axial direction. The diameter of the hole in the first section 201 is smaller than that in the second section 202, and the diameter of the hole in the second section 202 is smaller than that in the third section 203. A rotating support 3 is disposed in the first section 201, an oil seal 4 is disposed in the second section 202, and a retaining ring 5 is disposed in the third section 203. This embodiment adopts a segmented structural design, which facilitates the installation and positioning of each component and also improves the overall integrity of the sealing structure.

[0053] Furthermore, a rounded corner can be provided at the junction of the second section 202 and the third section 203 to guide mud and other dirt between the oil seal 4 and the retaining ring 5 to the connecting part 51 of the retaining ring 5, thereby improving the sewage discharge effect.

[0054] The sealing structure of this utility model solves the problems of poor protection of oil seal 4, easy adhesion of particles and foreign matter entanglement of half shaft 1, and can automatically discharge intruding impurities. It plays a good protective role for the sealing components that cooperate with half shaft 1 in rotating or rotating and axial compound motion, improves the service life of oil seal 4, and can be used in steering drive axles and vehicles with a lot of mud and sand in the working environment.

[0055] According to an embodiment of the present invention, another aspect provides a steering drive axle, including the sealing structure described above. In this sealing structure, the half-shaft 1 can be an outer half-shaft 11, and the housing 2 can be a steering knuckle 21; and / or, the half-shaft 1 can be an inner half-shaft 12, and the housing 2 can be an axle housing 22. The outer half-shaft 11 and the inner half-shaft 12 are rotatably connected.

[0056] Specifically, such as Figure 1As shown, the steering drive axle includes a steering knuckle 21, an axle housing 22, an outer half-shaft 11, an inner half-shaft 12, an upper kingpin 7, an upper kingpin bushing 8, a lower kingpin 9, and a lower kingpin bearing 10. The steering knuckle 21 is movably connected to the axle housing 22 at the top via the upper kingpin 7 and the upper kingpin bushing 8, and at the bottom via the lower kingpin 9 and the lower kingpin bearing 10. An installation space is formed between the steering knuckle 21 and the axle housing 22, and a universal joint 6 is disposed within this installation space. Both the steering knuckle 21 and the axle housing 22 are provided with the aforementioned mounting through holes 20, and these holes communicate with the installation space. The outer half-shaft 11 passes through the mounting through hole 20 of the steering knuckle 21 and is rotatably connected to the universal joint 6. The aforementioned rotating support 3, oil seal 4, and retaining ring 5 can be disposed between the outer half-shaft 11 and the inner wall of the mounting through hole 20 of the steering knuckle 21. The inner half-shaft 12 passes through the mounting through hole 20 of the axle housing 22 and is rotatably connected to the universal joint 6. The aforementioned rotating support 3, oil seal 4 and retaining ring 5 may also be provided between the inner half-shaft 12 and the inner wall of the mounting through hole 20 of the axle housing 22.

[0057] By adopting the above-mentioned sealing structure, the steering drive axle of this utility model effectively improves the sealing performance of the steering drive axle, reduces the damage of impurities to the internal components of the steering drive axle, and improves the reliability and service life of the steering drive axle.

[0058] According to an embodiment of the present invention, in another aspect, a vehicle is also provided, including the aforementioned sealing structure; or the aforementioned steering drive axle. The vehicle of the present invention utilizes the aforementioned sealing structure or steering drive axle, thereby optimizing the reliability of the seal, reducing the failure rate caused by seal failure and other problems, and improving the overall quality of the vehicle and the user experience.

[0059] It should be noted that the vehicles covered by this utility model include, but are not limited to, cars, off-road vehicles, trucks, and other automobiles; engineering vehicles such as loaders, excavators, and rock drills; agricultural vehicles such as tractors and harvesters; and special vehicles such as ATVs, snowmobiles, and shuttle buses.

[0060] Although embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A sealing structure applied to a steering drive axle, characterized in that, include: The housing (2) is provided with a mounting through hole (20); The half-shaft (1) has at least a portion of its structure passing through the mounting through hole (20) and is movably connected to the housing (2); Oil seal (4) is fitted between the inner wall of the mounting through hole (20) and the half shaft (1); A retaining ring (5) is located on the outside of the oil seal (4) along the axial direction of the half shaft (1). The retaining ring (5) is connected to the inner wall of the mounting through hole (20), and the half shaft (1) passes through the retaining ring (5).

2. The sealing structure according to claim 1, characterized in that, The outer peripheral wall of the retaining ring (5) is interference-fitted with the inner wall of the mounting through hole (20).

3. The sealing structure according to claim 2, characterized in that, A first gap is provided between the inner peripheral wall of the retaining ring (5) and the outer peripheral wall of the half shaft (1), and the first gap is 0.05-0.5mm.

4. The sealing structure according to claim 1, characterized in that, Along the axial direction of the half shaft (1), a second gap is provided between the oil seal (4) and the retaining ring (5).

5. The sealing structure according to claim 4, characterized in that, The retaining ring (5) is provided with a through portion (51) extending along the axial direction. The through portion (51) is located below the half shaft (1) and communicates with the second gap.

6. The sealing structure according to claim 5, characterized in that, The retaining ring (5) includes a thin-walled portion (52) and a thick-walled portion (53) arranged and connected in a radial direction from the inside to the outside, and the connecting portion (51) is a groove formed on the thick-walled portion (53).

7. The sealing structure according to any one of claims 1 to 6, characterized in that, It also includes a rotating support (3), which is located on the side of the oil seal (4) away from the retaining ring (5); the rotating support (3) is connected to the inner wall of the mounting through hole (20) and has a clearance fit with the outer peripheral wall of the half shaft (1).

8. The sealing structure according to claim 7, characterized in that, The mounting through hole (20) includes a first section (201), a second section (202) and a third section (203) arranged sequentially along the axial direction. The diameter of the first section (201) is smaller than the diameter of the second section (202), and the diameter of the second section (202) is smaller than the diameter of the third section (203). The rotating support (3) is located in the first section (201), the oil seal (4) is located in the second section (202), and the retaining ring (5) is located in the third section (203).

9. A steering drive axle, characterized in that, include: The sealing structure as described in any one of claims 1 to 8; Wherein, the half shaft (1) is an outer half shaft (11), and the housing (2) is a steering knuckle (21); and / or, the half shaft (1) is an inner half shaft (12), and the housing (2) is a bridge housing (22); the outer half shaft (11) and the inner half shaft (12) are rotatably connected.

10. A vehicle, characterized in that, include: The sealing structure as described in any one of claims 1 to 8; Alternatively, the steering drive axle as claimed in claim 9.

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