Steering mechanism and vehicle with same

Abstract

The utility model discloses a steering mechanism and a vehicle thereof. The steering mechanism comprises a steering knuckle, a rotating pin, a lining, a first bearing and a second bearing. A first mounting hole and a second mounting hole are formed in the steering knuckle. The two ends of the rotating pin are matched in the first mounting hole and the second mounting hole correspondingly, and the rotating pin is suitable for being connected with a front axle of the vehicle. The bush is arranged on the periphery of the rotating pin in a sleeving mode and arranged in the first mounting hole in an interference fit mode. And the first bearing sleeves the periphery of the rotating pin and is arranged in the second mounting hole. The second bearing is arranged on the periphery matched with the rotating pin in a sleeving mode, and part of the second bearing is arranged in the second mounting hole in an interference fit mode and located between the lining and the first bearing. According to the steering mechanism, the steering resistance of the steering mechanism is reduced, the steering return performance of the steering mechanism is improved, meanwhile, the bearing capacity of the steering mechanism is improved, so that a vehicle is suitable for various use working conditions, the service life of the steering mechanism is prolonged, and the market competitiveness of the steering mechanism is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of steering knuckles, in particular to a steering mechanism and a vehicle thereof. Background Art

[0002] In the related art, the steering knuckle structure of a vehicle often adopts a structure of an alloy bushing plus a cylindrical roller bearing. However, when the vehicle is in a wading condition or an overload condition, the steering resistance of the above-mentioned steering knuckle structure is large, and thus the life of the steering knuckle structure is short. Utility Model Content

[0003] 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 steering mechanism that improves the steering return performance of the steering mechanism and is conducive to improving the load-bearing capacity of the steering mechanism so that the vehicle is suitable for a variety of operating conditions, and is also conducive to extending the service life of the steering mechanism.

[0004] Another object of the present invention is to provide a vehicle using the above steering mechanism.

[0005] The steering mechanism according to the first aspect of the present invention includes: a steering knuckle, a first mounting hole and a second mounting hole are formed on the steering knuckle, the central axis of the first mounting hole coincides with the central axis of the second mounting hole, and the first mounting hole and the second mounting hole are spaced apart along the axial direction of the first mounting hole; a rotating pin, the two ends of the rotating pin are respectively fitted in the first mounting hole and the second mounting hole, and the rotating pin is suitable for being connected to the front axle of the vehicle; a bushing, the bushing is sleeved on the outer periphery of the rotating pin and is interference fit in the first mounting hole; a first bearing, the first bearing is sleeved on the outer periphery of the rotating pin and is arranged in the second mounting hole; a second bearing, the second bearing is sleeved on the outer periphery of the rotating pin, and a part of the second bearing is interference fit in the second mounting hole and is located between the bushing and the first bearing.

[0006] According to the steering mechanism of the embodiment of the utility model, the rotating pin is equipped with a bushing, a first bearing and a second bearing, which is beneficial to reducing the steering resistance of the steering mechanism and improving the steering return performance of the steering mechanism. It is also beneficial to improving the load-bearing capacity of the steering mechanism so that the vehicle is suitable for various operating conditions. In addition, it is beneficial to extend the service life of the steering mechanism, thereby improving the market competitiveness of the steering structure.

[0007] According to some embodiments of the present invention, the first bearing is a needle bearing, and / or the second bearing is a damping bearing.

[0008] According to some embodiments of the present invention, the bushing is a polyetheretherketone bushing.

[0009] According to some embodiments of the present invention, the steering mechanism further includes an oil seal, which is disposed in the first mounting hole and is located on a side of the first mounting hole adjacent to the second mounting hole.

[0010] According to some embodiments of the utility model, the second bearing includes a shell; a bearing body, the bearing body is interference fit in the shell; a first seal, the first seal is arranged between the rotating pin and the bearing body, and the first seal is located on the side of the bearing body adjacent to the first mounting hole; a second seal, the second seal is arranged between the bearing body and the shell, and the second seal is located on the side of the bearing body away from the first mounting hole.

[0011] According to some embodiments of the present utility model, the second seal includes a first sealing segment, which is sleeved on the outer periphery of the bearing body; and at least one second sealing segment, which is located between the first sealing segment and the housing, and extends radially along the rotating pin.

[0012] According to some embodiments of the utility model, the bearing body includes a first bearing segment and a second bearing segment connected to each other, the outer diameter of the first bearing segment is larger than the outer diameter of the second bearing segment, the second bearing segment is interference fit with the second mounting hole, and the outer periphery of the first bearing segment is provided with the second seal.

[0013] According to some embodiments of the utility model, the steering mechanism also includes a blocking cover, which is arranged in the second mounting hole, and the blocking cover is located on the side of the first bearing away from the second bearing; a third seal, which is stopped between the first bearing and the blocking cover; and a retaining spring, which is stopped on the side of the blocking cover away from the third seal.

[0014] According to some embodiments of the present utility model, the steering mechanism further includes a fourth sealing member, and the fourth sealing member is disposed at an end of the rotating pin away from the blocking cover.

[0015] The vehicle according to the embodiment of the second aspect of the utility model comprises the steering mechanism according to the embodiment of the first aspect of the utility model.

[0016] 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

[0017] 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:

[0018] Figure 1 is a cross-sectional view of a steering mechanism according to an embodiment of the utility model;

[0019] Figure 2 yes Figure 1 The enlarged view of the A part shown in the middle circle;

[0020] Figure 3 yes Figure 1 The enlarged view of the part B shown in the middle circle;

[0021] Figure 4 yes Figure 1 The enlarged view of the C part circled in the middle;

[0022] Figure 5 is a schematic diagram of a steering knuckle of a steering mechanism according to an embodiment of the utility model;

[0023] Figure 6 It is a schematic diagram of a second sealing member of a steering mechanism according to an embodiment of the present utility model.

[0024] Reference numerals:

[0025] 100: Steering mechanism;

[0026] 1: Steering knuckle; 11: First mounting hole; 12: Second mounting hole; 3: Bushing; 4: First bearing; 5: Second bearing; 51: Housing; 52: Bearing body; 521: First bearing section; 522: Second bearing section; 53: First sealing member; 54: Second sealing member; 541: First sealing section; 542: Second sealing section; 6: Oil seal; 7: Plug cover; 8: Third sealing member; 9: Circlip;

[0027] 200:Front axle. DETAILED DESCRIPTION

[0028] Reference below Figure 1-Figure 6 The steering mechanism 100 according to the first embodiment of the present invention is described.

[0029] like Figure 1-Figure 6 As shown, the steering mechanism 100 according to the first embodiment of the utility model includes a steering knuckle 1, a rotating pin, a bushing 3, a first bearing 4 and a second bearing 5.

[0030] Specifically, the steering knuckle 1 is formed with a first mounting hole 11 and a second mounting hole 12. The central axis of the first mounting hole 11 (for example, Figure 1The first mounting hole 11 and the second mounting hole 12 are aligned with each other in the vertical direction of the first mounting hole 11, and the first mounting hole 11 and the second mounting hole 12 are spaced apart along the axial direction of the first mounting hole 11. The two ends of the rotating pin are respectively fitted in the first mounting hole 11 and the second mounting hole 12, and the rotating pin is suitable for being connected to the front axle 200 of the vehicle. The bushing 3 is sleeved on the outer periphery of the rotating pin and is interference fit in the first mounting hole 11. The first bearing 4 is sleeved on the outer periphery of the rotating pin and is arranged in the second mounting hole 12. The second bearing 5 is sleeved on the outer periphery of the rotating pin, and part of the second bearing 5 is interference fit in the second mounting hole 12 and is located between the bushing 3 and the first bearing 4.

[0031] For example, in Figure 1 , Figure 2 and Figure 5 In the example, the swivel pin is coaxially arranged with the first mounting hole 11 and the second mounting hole 12 of the steering knuckle 1 to facilitate the cooperation between the swivel pin and the first mounting hole 11 and the second mounting hole 12, thereby increasing the assembly accuracy of the swivel pin on the steering knuckle 1.

[0032] The first mounting hole 11 and the second mounting hole 12 are spaced apart along the axial direction of the first mounting hole 11, so that the bushing 3 and the first bearing 4 and the second bearing 5 are spaced apart along the axial direction of the first mounting hole 11, which is conducive to improving the bushing 3 and the first bearing 4 and the second bearing 5 to support the two ends of the rotating pin respectively, and improving the assembly stability of the rotating pin on the steering knuckle 1. At the same time, the bushing 3, the first bearing 4 and the second bearing 5 are used together to reduce the steering resistance of the steering mechanism 100 (the steering resistance is reduced by about 35%), and the first bearing 4 and the second bearing 5 are conducive to improving the steering return performance of the steering mechanism 100, which is conducive to the realization of the steering function of the emergency steering system of the vehicle, and at the same time, it is conducive to improving the bearing capacity of the steering mechanism 100, so that the vehicle is suitable for various working conditions.

[0033] The front axle 200 of the vehicle can be connected to a rotating pin located between the first mounting hole 11 and the second mounting hole 12, thereby limiting the front axle 200 of the vehicle and preventing the front axle 200 from moving along the axial direction of the first mounting hole 11 on the rotating pin toward the first mounting hole 11 or the second mounting hole 12, thereby improving the relative stability of the front axle 200 on the rotating pin.

[0034] A bushing 3 is interference-fitted in the first mounting hole 11 , and is utilized to provide wear protection, shock absorption, positioning, sealing and electrical isolation for the periphery of the rotating pin. The bushing 3 is beneficial for absorbing and dissipating the vibration energy of the rotating pin, and reducing the vibration and noise transmitted from the rotating pin to the steering knuckle 1 .

[0035] According to the steering mechanism 100 of the embodiment of the utility model, the rotating pin is equipped with a bushing 3, a first bearing 4 and a second bearing 5, which is beneficial to reducing the steering resistance of the steering mechanism 100 and improving the steering return performance of the steering mechanism 100. It is also beneficial to improving the load-bearing capacity of the steering mechanism 100 so that the vehicle is suitable for various operating conditions. In addition, it is beneficial to extend the service life of the steering mechanism 100, thereby improving the market competitiveness of the steering structure.

[0036] According to some embodiments of the utility model, the first bearing 4 is a needle roller bearing, and / or the second bearing 5 is a damping bearing. Among them, the friction coefficient of the needle roller bearing is relatively small, and the friction coefficient of the rolling friction of the needle roller bearing when rotating around the rotating pin is about 1 / 30 of that of the alloy bushing. The needle roller bearing uses a slender needle roller as a rolling element. Since the contact area between the needle roller and the raceway is large, the pressure per unit area is relatively small, so that the needle roller bearing has a high radial load capacity and impact load resistance. The needle roller bearing has a large number of needle rollers, which disperses the load and helps to reduce vibration and noise. At the same time, the needle roller bearing occupies a small space and can run stably at a higher speed. The damping bearing can effectively absorb, dissipate or convert vibration energy during operation, thereby improving the operating stability and comfort of the steering mechanism 100. Therefore, using a needle roller bearing as the first bearing 4 and / or a damping bearing as the second bearing 5 is conducive to adjusting the steering resistance force of the steering mechanism 100 and eliminating road impact.

[0037] Furthermore, the bushing 3 is a polyetheretherketone bushing. Among them, the polyetheretherketone bushing has excellent impact resistance, high temperature resistance, chemical corrosion resistance and self-lubrication, and the polyetheretherketone bushing has a low friction coefficient. Therefore, using the polyetheretherketone bushing as the bushing 3 is conducive to increasing the structural stability of the bushing 3, reducing the cost of the bushing 3, and extending the service life of the bushing 3.

[0038] According to some embodiments of the present invention, referring to Figure 1 and Figure 4 The steering mechanism 100 further includes an oil seal 6, which is disposed in the first mounting hole 11 and is located on a side of the first mounting hole 11 adjacent to the second mounting hole 12. The oil seal 6 is used to seal the gap between the rotating pin and the side of the first mounting hole 11 adjacent to the second mounting hole 12, to prevent external impurities (such as dust, water, chemicals, etc.) from invading the gap between the bushing 3 in the first mounting hole 11 and the rotating pin, and to extend the service life of the bushing 3 and the rotating pin.

[0039] Among them, refer to Figure 1 , Figure 2 and Figure 5The second bearing 5 includes a housing 51, a bearing body 52, a first seal 53 and a second seal 54. The bearing body 52 is interference fit in the housing 51. The first seal 53 is provided between the rotating pin and the bearing body 52, and the first seal 53 is located on the side of the bearing body 52 adjacent to the first mounting hole 11. The second seal 54 is provided between the bearing body 52 and the housing 51, and the second seal 54 is located on the side of the bearing body 52 away from the first mounting hole 11. The first seal 53 is conducive to preventing external impurities (such as dust, water, chemicals, etc.) from entering from the side of the bearing body 52 adjacent to the first mounting hole 11 to cause the bearing body 52 to wear, thereby improving the sealing performance of the side of the bearing body 52 adjacent to the first mounting hole 11. The second seal 54 is conducive to preventing external impurities (such as dust, water, chemicals, etc.) from entering from the side of the bearing body 52 away from the first mounting hole 11, thereby improving the sealing performance of the side of the bearing body 52 away from the first mounting hole 11. Therefore, the cooperation between the first seal 53 and the second seal 54 is conducive to ensuring the sealing of the bearing body 52, preventing external impurities (such as dust, water, chemicals, etc.) from affecting the bearing body 52, and further improving the service life of the bearing body 52.

[0040] Further, refer to Figure 1 and Figure 6 The second sealing member 54 includes a first sealing segment 541 and at least one second sealing segment 542. The first sealing segment 541 is sleeved on the outer periphery of the bearing body 52. ​​The second sealing segment 542 is located between the first sealing segment 541 and the housing 51, and the second sealing segment 542 extends in the radial direction of the rotating pin. For example, Figure 6 In the example, the second seal 54 includes a first seal section 541 and two second seal sections 542, and the two second seal sections 542 extend obliquely along the radial direction of the rotating pin in a direction away from the bearing body 52, so that the first seal section 541 is used to cooperate with the bearing body 52, and the side of the second seal section 542 away from the first seal section 541 abuts against the inner wall of the housing 51. This helps to prevent external impurities (such as dust, water, chemicals, etc.) from entering the bearing body 52 and causing wear on the bearing body 52, realizes dynamic sealing of the bearing body 52, reduces the failure rate of the bearing body 52, and improves the service life of the steering mechanism 100.

[0041] During use, contact pressure is generated between the second seal 54 and the inner wall of the housing 51, forming an extremely thin oil film, which can effectively prevent the leakage of the working medium in the bearing body 52 and reduce the friction and wear between the second seal 54 and the inner wall of the housing 51 to a certain extent. At the same time, the shape and pre-compression amount of the second seal 54 are designed to adapt to the radial runout and axial movement of the bearing body 52, maintaining a good sealing effect.

[0042] According to some embodiments of the present invention, Figure 1 and Figure 2 As shown, the bearing body 52 includes a first bearing section 521 and a second bearing section 522 connected to each other, the outer diameter of the first bearing section 521 is larger than the outer diameter of the second bearing section 522, and the second bearing section 522 is interference fit with the second mounting hole 12. The first bearing section 521 can block external impurities (such as dust, water, chemicals, etc.) toward the second bearing section 522, and the second bearing section 522 and the second mounting hole 12 are closely matched, and the second bearing section 522 has no relative movement in the second mounting hole 12, thereby ensuring the sealing between the second bearing section 522 and the inner wall of the second mounting hole 12. The outer periphery of the first bearing section 521 is sleeved with a second sealing member 54. The second sealing member 54 is arranged on the side of the first bearing section 521 facing the second mounting hole 12, and the second sealing member 54 is used to improve the sealing between the first bearing section 521 and the inner wall of the housing 51.

[0043] Therefore, by the interference fit of the second bearing segment 522 in the second mounting hole 12, the interference fit of the first bearing segment 521 in the housing 51, and the provision of the first seal 53 and the second seal 54, the sealing of the bearing body 52 is ensured, preventing external impurities (such as dust, water, chemicals, etc.) from affecting the bearing body 52, thereby improving the service life of the second bearing 5.

[0044] In addition, refer to Figure 1 and Figure 3 , the steering mechanism 100 also includes a plug cover 7, a third seal 8 and a retaining spring 9. The plug cover 7 is arranged in the second mounting hole 12, and the plug cover 7 is located on the side of the first bearing 4 away from the second bearing 5. The third seal 8 stops between the first bearing 4 and the plug cover 7. The retaining spring 9 stops on the side of the plug cover 7 away from the third seal 8. Along the axial direction of the second mounting hole 12 in the direction away from the first mounting hole 11, the second bearing 5, the first bearing 4, the third seal 8, the plug cover 7 and the retaining spring 9 are sequentially arranged. The plug cover 7 is used to block the side of the second mounting hole 12 away from the first mounting hole 11 to prevent external impurities (such as dust, water, chemicals, etc.) from entering the first bearing 4 and causing wear to the first bearing 4. At the same time, the third seal 8 can further increase the sealing performance of the first bearing 4, which is beneficial to reduce the failure rate of the first bearing 4 and improve the service life of the steering mechanism 100. The retaining spring 9 is helpful to limit the position of the plugging cover 7 to prevent the plugging cover 7 from falling out of the second mounting hole 12, thereby increasing the installation stability of the plugging cover 7 in the second mounting hole 12 and improving the use stability of the plugging cover 7 and the third sealing member 8.

[0045] Furthermore, the steering mechanism 100 further includes a fourth seal (not shown), which is disposed at the end of the rotating pin away from the plug cover 7. In other words, the fourth seal is disposed at the end of the first mounting hole 11 away from the second mounting hole 12, thereby increasing the sealing performance between the rotating pin, the bushing 3 and the first mounting hole 11, and further ensuring the sealing performance of the steering mechanism 100.

[0046] According to the steering mechanism 100 of the embodiment of the utility model, a plurality of sealing structures are provided, so that the sealing performance of the steering mechanism 100 is increased, the service life of the steering mechanism 100 is extended, and the maintenance cost of the steering mechanism 100 is reduced. The steering mechanism 100 can be maintained once every 100,000 km, and the service life of the steering mechanism 100 is also increased to more than 500,000 km, thereby improving the user satisfaction and greatly reducing the maintenance cost of the steering mechanism 100.

[0047] The vehicle (not shown) according to the embodiment of the second aspect of the utility model comprises the steering mechanism 100 according to the embodiment of the first aspect of the utility model.

[0048] The vehicle according to the embodiment of the utility model adopts the steering mechanism 100, which is beneficial to improving the steering performance of the vehicle, making the vehicle suitable for various operating conditions, thereby improving the market competitiveness of the vehicle.

[0049] Other structures and operations of the vehicle according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0050] In the description of the present invention, it is necessary to understand that the terms "center", "upper", "lower", "front", "rear", "inside", "outside", "axial", "radial", "circumferential", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0051] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0052] 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 expressions of the above terms do not necessarily refer to the same embodiment or example.

[0053] 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 steering mechanism, characterized in that: include: A steering knuckle, wherein a first mounting hole and a second mounting hole are formed on the steering knuckle, a central axis of the first mounting hole coincides with a central axis of the second mounting hole, and the first mounting hole and the second mounting hole are spaced apart along the axial direction of the first mounting hole; A rotating pin, two ends of which are respectively fitted in the first mounting hole and the second mounting hole, and the rotating pin is suitable for being connected to the front axle of the vehicle; A bushing, which is sleeved on the outer periphery of the rotating pin and is interference-fitted in the first mounting hole; A first bearing, wherein the first bearing is sleeved on the outer periphery of the rotating pin and is arranged in the second mounting hole; A second bearing, wherein the second bearing is sleeved on the outer periphery of the rotating pin, and a portion of the second bearing is interference-fitted in the second mounting hole and is located between the bushing and the first bearing.

2. The steering mechanism according to claim 1, characterized in that: The first bearing is a needle bearing, and / or the second bearing is a damping bearing.

3. The steering mechanism according to claim 2, characterized in that: The bushing is a polyetheretherketone bushing.

4. The steering mechanism according to any one of claims 1 to 3, characterized in that: Also includes: An oil seal is disposed in the first mounting hole, and the oil seal is located on a side of the first mounting hole adjacent to the second mounting hole.

5. The steering mechanism according to any one of claims 1 to 3, characterized in that: The second bearing comprises: case; a bearing body, the bearing body being interference-fitted in the housing; A first sealing member, wherein the first sealing member is disposed between the rotating pin and the bearing body, and the first sealing member is located on a side of the bearing body adjacent to the first mounting hole; A second sealing member is provided between the bearing body and the housing, and the second sealing member is located at a side of the bearing body away from the first mounting hole.

6. The steering mechanism according to claim 5, characterized in that: The second sealing member comprises: A first sealing section, wherein the first sealing section is sleeved on the outer periphery of the bearing body; At least one second sealing segment, wherein the second sealing segment is located between the first sealing segment and the housing, and the second sealing segment extends in a radial direction of the rotating pin.

7. The steering mechanism according to claim 5, characterized in that: The bearing body includes a first bearing section and a second bearing section connected to each other, the outer diameter of the first bearing section is larger than the outer diameter of the second bearing section, the second bearing section is interference fit with the second mounting hole, and the outer periphery of the first bearing section is sleeved with the second seal.

8. The steering mechanism according to claim 1, characterized in that: Also includes: a blocking cover, the blocking cover being arranged in the second mounting hole, the blocking cover being located on a side of the first bearing away from the second bearing; a third sealing member, the third sealing member being abutted between the first bearing and the plugging cover; A retaining spring is disposed between the third sealing member and the plugging cover.

9. The steering mechanism according to claim 8, characterized in that: Also includes: A fourth sealing member is arranged at an end of the rotating pin away from the blocking cover.

10. A vehicle, characterized in that: Comprising a steering mechanism according to any one of claims 1-9.

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