Sealing element, wheel assembly, vehicle spare tire and vehicle

Abstract

The utility model discloses a sealing element, a wheel assembly, a vehicle spare tire and a vehicle, the sealing element comprises a body, the body comprises an inner ring, the inner ring is provided with a first sealing lip and a second sealing lip, and a cavity is formed between the first sealing lip and the second sealing lip. According to the technical scheme, the stability and reliability of the sealing performance of the sealing piece can be improved.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of vehicles, and particularly relates to a sealing element, a vehicle wheel assembly, a vehicle spare tire and a vehicle. BACKGROUND

[0002] In the prior art, the sealing element in the wheel hub motor usually adopts a single-lip seal. The single-lip seal cannot completely prevent the penetration of liquid, gas or dust in some cases, which may cause the inside of the motor to be contaminated, affecting the performance and service life of the motor. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiments of the present application is to provide a sealing element, a vehicle wheel assembly, a vehicle spare tire and a vehicle.

[0004] According to a first aspect of the embodiments of the present application, a sealing element is provided, which comprises a body, the body comprising an inner ring, the inner ring being provided with a first sealing lip and a second sealing lip, a cavity being formed between the first sealing lip and the second sealing lip.

[0005] Optionally, the extension line of the first sealing lip forms an acute angle or an obtuse angle with the axis of the body; and / or the extension line of the second sealing lip forms an acute angle or an obtuse angle with the axis of the body.

[0006] Optionally, the body further comprises an outer ring, the outer ring being provided with a friction portion.

[0007] Optionally, the sealing element further comprises a reinforcing frame, the reinforcing frame being arranged inside the body.

[0008] Optionally, a containing groove is formed in the side wall of the body close to the inner ring, and the sealing element further comprises a dustproof pad, the dustproof pad being arranged in the containing groove.

[0009] According to a second aspect of the embodiments of the present application, a vehicle wheel assembly is provided, which comprises a wheel rim and a wheel hub motor, the wheel hub motor being arranged inside the wheel rim and capable of driving the wheel rim to rotate.

[0010] The wheel hub motor comprises:

[0011] a mounting bracket, a first containing cavity being formed in the inside of the mounting bracket;

[0012] a rotor mechanism, the rotor mechanism being arranged in the first containing cavity and fixedly connected with the mounting bracket;

[0013] a stator mechanism, the stator mechanism being arranged in the first containing cavity;

[0014] A first seal is provided, which is the seal described above, the outer ring of the first seal is connected with the stator mechanism, and the inner ring of the first seal is connected with the mounting bracket.

[0015] Optionally, the wheel assembly further comprises an axle, the axle is arranged through the rim along the axial direction of the rim and is rotationally connected with the rim.

[0016] The hub motor further comprises a fixing frame, and the stator mechanism is fixed with the axle through the fixing frame.

[0017] Optionally, the mounting bracket is provided with a first opening, the first opening is in communication with the first accommodating cavity, the stator mechanism is close to the first opening relative to the rotor mechanism, and the fixing frame connects the stator mechanism and the axle at the first opening.

[0018] Optionally, the hub motor comprises two first seals, one side of one of the seals is connected with the mounting bracket, and the other side is connected with the stator mechanism on one side of the first opening, and one side of the other first seal is connected with the mounting bracket, and the other side is connected with the stator mechanism on the other side of the first opening.

[0019] Optionally, the stator mechanism comprises a stator and a stator mounting frame, the stator is fixed on the stator mounting frame, and the stator mounting frame is provided with a first mounting groove at one end close to the first opening.

[0020] The mounting bracket is provided with a second mounting groove, the outer ring of the first seal is embedded in the mounting groove, and the inner ring of the first seal is embedded in the second mounting groove.

[0021] Optionally, the hub motor further comprises a speed reduction mechanism, the speed reduction mechanism is connected with the rotor mechanism and the rim respectively.

[0022] Optionally, the speed reduction mechanism comprises:

[0023] A sealing cover is provided, the inside of the sealing cover is formed with a second accommodating cavity, the end of the sealing cover is provided with a second opening, and the second accommodating cavity is in communication with the second opening.

[0024] A gear assembly is provided, the gear assembly is rotationally connected with the axle, the gear assembly is arranged in the second accommodating cavity and connected with the sealing cover, and part of the gear assembly protrudes out of the first accommodating cavity through the second opening.

[0025] The part of the gear assembly protruding out of the second opening is connected with the mounting bracket.

[0026] Optionally, the deceleration mechanism also includes a second seal, which adopts the above-mentioned seal, and the second seal is arranged at the second opening. The inner ring of the second seal is rotatably connected to the gear assembly, and the outer ring of the second seal is fixedly connected to the sealing cover, and the gear assembly can rotate relative to the sealing cover.

[0027] Optionally, an annular groove is provided on the inner wall of the second opening, a third mounting groove is provided on the side wall of the gear assembly, the inner ring of the second seal is embedded in the annular groove, and the outer ring of the second seal is embedded in the third mounting groove.

[0028] Optionally, the wheel assembly further comprises a first spoke, wherein the first spoke is provided at an axial end portion of the rim;

[0029] The sealing cover further includes a third opening, and the second opening is arranged opposite to the third opening;

[0030] The first spoke is connected to the sealing cover at the third opening and closes the third opening.

[0031] Optionally, the first spoke includes a first shaft segment and a second shaft segment connected to each other, the first shaft segment is partially connected to the sealing cover, mounting holes are opened inside the first shaft segment and the second shaft segment, a first bearing is provided in the mounting hole, and one end of the wheel axle is connected to the first bearing.

[0032] Optionally, the second shaft segment protrudes from the axial end of the rim, and a second bearing is provided on the outer wall of the second shaft segment.

[0033] Optionally, the first spoke further includes a third shaft segment, the third shaft segment is connected to the second shaft segment, and the third shaft segment is used for an external winch.

[0034] Optionally, the first spoke further includes a first spoke, and the first spoke is rectangular.

[0035] Optionally, the wheel assembly further includes a second spoke, which is arranged at the other end of the rim, and the second spoke includes a second spoke, and the width of the second spoke at one end close to the axle is smaller than the width at one end away from the axle.

[0036] According to a third aspect of an embodiment of the present application, a vehicle spare tire is provided, comprising:

[0037] The wheel assembly as described above;

[0038] a first driving mechanism, wherein a driving end of the first driving mechanism is connected to the wheel assembly, and the first driving mechanism is used to drive the wheel assembly to rotate around the Z direction;

[0039] A second driving mechanism, a driving end of the second driving mechanism being connected with the first driving mechanism, the second driving mechanism being capable of driving the first driving mechanism to rotate around the X direction;

[0040] The X direction intersects with the Z direction.

[0041] Optionally, the vehicle spare tire further comprises a third driving mechanism and a connecting shaft, the third driving mechanism being arranged along the X direction at a distance from the second driving mechanism, a driving end of the third driving mechanism being connected with one end of the connecting shaft, a driving end of the second driving mechanism being connected with the other end of the connecting shaft, the first driving mechanism being connected with the connecting shaft.

[0042] Optionally, the vehicle spare tire further comprises a connecting arm, the connecting arm comprising a first connecting end, a second connecting end and a third connecting end, the first connecting end and the second connecting end being arranged along the X direction at a distance from each other, the first connecting end and the second connecting end being connected with two sides of the wheel assembly, the third connecting end being connected with the driving end of the first driving mechanism.

[0043] According to a fourth aspect of the embodiments of the present application, a vehicle is provided, comprising the vehicle spare tire described above.

[0044] One technical effect of the embodiments of the present application is that by arranging two sealing lips, the lips of the sealing lips can be more evenly attached to the sealing surface when the lips are subjected to pressure, thereby improving the stability and reliability of the sealing performance, and effectively reducing the entry of lubricating oil, gas or dust into the interior of the in-wheel motor, thereby improving the cleanliness and stability of the internal environment of the in-wheel motor.

[0045] Other characteristics and advantages of the present application will become apparent from the following detailed description of exemplary embodiments of the present application, with reference to the accompanying drawings. BRIEF DESCRIPTION OF DRAWINGS

[0046] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the present application and, together with the description, serve to explain the principles of the present application.

[0047] Figure 1 is a structural schematic view of the sealing member in the embodiments of the present application;

[0048] Figure 2 is a partial sectional view of the sealing member in the embodiments of the present application;

[0049] Figure 3 is a sectional view of the wheel assembly in the embodiments of the present application;

[0050] Figure 4 is a partial enlarged view of A in Figure 3 ;

[0051] Figure 5 is a partial enlarged view of B in FIG. 1; Figure 3

[0052] Figure 6 is a structural schematic view of a first spoke in the embodiment of the present application;

[0053] Figure 7 is a structural schematic view of a second spoke in the embodiment of the present application;

[0054] Figure 8 is a structural schematic view of a vehicle spare tire in the embodiment of the present application;

[0055] Figure 9 is a position schematic view of a vehicle spare tire when the vehicle is driving on land in the embodiment of the present application;

[0056] Figure 10 is a position schematic view of a vehicle spare tire when the vehicle is parking sideways or turning around in the embodiment of the present application;

[0057] Figure 11 is a position schematic view of a vehicle spare tire when the vehicle is driving normally in the embodiment of the present application;

[0058] Figure 12 is a position schematic view of a vehicle spare tire when the vehicle is driving on water in the embodiment of the present application.

[0059] Explanation of Reference Signs: Wheel assembly 100; wheel rim 1; wheel hub motor 2; mounting bracket 21; first accommodating cavity 211; first opening 212; first baffle 213; second baffle 214; second mounting groove 215; rotor mechanism 22; stator mechanism 23; stator 231; stator mounting bracket 232; first mounting groove 2321; first sealing member 24; body 241; inner ring 2411; first sealing lip 2412; second sealing lip 2413; cavity 2414; outer ring 2415; accommodating groove 2416; reinforcing bracket 242; dustproof pad 243; fixing bracket 25; reduction mechanism 26; sealing cover 261; second accommodating cavity 2611; second opening 2612; annular groove 26121; third opening 2613; gear assembly 262; third mounting groove 2621; second sealing member 263; wheel shaft 3; first spoke 4; first shaft segment 41; second shaft segment 42; third shaft segment 43; first spoke 44; second spoke 5; second spoke 51; first bearing 6; second bearing 7; vehicle spare tire 200; first driving mechanism 8; second driving mechanism 9; third driving mechanism 10; connecting shaft 11; connecting arm 12; second connecting end 121; third connecting end 122; vehicle 300. DETAILED DESCRIPTION

[0060] ​Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangements of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0061] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present disclosure, its application, or uses.

[0062] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0063] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0064] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0065] like Figure 1 and Figure 2 As shown, according to the first aspect of an embodiment of the present application, a seal is provided, which includes a main body 241, the main body 241 includes an inner ring 2411, the inner ring 2411 is provided with a first sealing lip 2412 and a second sealing lip 2413, and a cavity 2414 is formed between the first sealing lip 2412 and the second sealing lip 2413.

[0066] like Figure 1 and Figure 2 As shown, the seal includes a main body 241, which is annular in shape and includes an inner ring 2411. A first sealing lip 2412 and a second sealing lip 2413 are provided at the inner ring 2411. The first sealing lip 2412 and the second sealing lip 2413 are spaced apart along the axial direction of the main body 241, and the spacing space between the first sealing lip 2412 and the second sealing lip 2413 forms a cavity 2414, so that the first sealing lip 2412 and the second sealing lip 2413 have a certain movable space, thereby improving the sealing effect of the seal.

[0067] The lips of the first sealing lip 2412 and the second sealing lip 2413 can be more uniformly attached to the sealing surface when subjected to pressure, thereby improving the stability and reliability of the sealing performance, effectively reducing the entry of lubricating oil, gas or dust into the hub motor 2, and thereby improving the cleanliness and stability of the internal environment of the hub motor 2. Moreover, the sealing member has better sealing performance by the first sealing lip 2412 and the second sealing lip 2413, so its service life is longer, thereby reducing maintenance costs.

[0068] In an alternative embodiment, the extension line of the first sealing lip 2412 forms an acute or obtuse angle with the axis of the body 241; and / or the extension line of the second sealing lip 2413 forms an acute or obtuse angle with the axis of the body 241.

[0069] The body 241 is annular, and the axis of the body 241 is the center line of the axial direction of the body 241.

[0070] When the sealing member is subjected to pressure or temperature changes, the first sealing lip 2412 and the second sealing lip 2413 are inclined to deform to better adapt to the shape of the sealing surface, thereby providing stronger sealing effect; and when the first sealing lip 2412 and the second sealing lip 2413 contact the sealing surface, a certain lubrication gap is formed to reduce direct contact between the sealing lip and the sealing surface, which not only reduces the wear rate of the sealing lip, but also reduces the heat generated by friction, further improving the service life of the sealing member; and provides conditions for automatic compensation sealing, increases the interference between the sealing lip and the other side of the sealing member, and is more conducive to sealing.

[0071] In an alternative embodiment, the body 241 further comprises an outer ring 2415 provided with a friction portion. The friction portion can be a rough tooth groove structure or a protrusion, which can be interference fit with the mounting groove and increase the friction force after the outer ring 2415 is mounted in the mounting groove, further improving the sealing effect.

[0072] In an alternative embodiment, the sealing member further comprises a reinforcing frame 242 arranged inside the body 241 to improve the structural strength of the sealing member.

[0073] In an alternative embodiment, the side wall of the body 241 is provided with a containing groove 2416 near the inner ring 2411, and the sealing member further comprises a dustproof pad 243 arranged in the containing groove 2416. By arranging the dustproof pad 243, the entry of external impurities into the first sealing lip 2412 and the second sealing lip 2413 can be reduced to reduce the wear of the first sealing lip 2412 and the second sealing lip 2413.

[0074] As shown in Figure 3 According to a second aspect of the present application, a wheel assembly 100 is provided, which comprises a wheel rim 1 and a wheel hub motor 2, the wheel hub motor 2 is arranged inside the wheel rim 1 and can drive the wheel rim 1 to rotate; the wheel hub motor 2 comprises a mounting bracket 21, a rotor mechanism 22, a stator mechanism 23 and a first sealing element 24, the inside of the mounting bracket 21 is formed with a first accommodating cavity 211; the rotor mechanism 22 is arranged in the first accommodating cavity 211 and fixedly connected with the mounting bracket 21; the stator mechanism 23 is arranged in the first accommodating cavity 211, the outer ring 2415 of the first sealing element 24 is connected with the stator mechanism 23, the inner ring 2411 of the first sealing element 24 is rotatably connected with the mounting bracket 21, and the first sealing element 24 and the stator mechanism 23 can seal the first accommodating cavity 211.

[0075] In the prior art, the wheel hub motor 2 is usually sealed inside the wheel rim 1, but the wheel assembly 100 in the present application needs to circulate water in the inside of the wheel rim 1 when driving on water, so as to realize the driving function of the vehicle on water.

[0076] The wheel assembly 100 provided by the present application can be used in the vehicle spare tire 200, and can also be used as the wheel of other vehicles.

[0077] The present embodiment is described by using the wheel assembly 100 in the vehicle spare tire 200.

[0078] The present application provides a wheel assembly 100, which comprises a wheel rim 1 and a wheel hub motor 2, the wheel hub motor 2 is arranged inside the wheel rim 1, and the wheel hub motor 2 can drive the wheel rim 1 to rotate, so that the wheel assembly 100 can rotate independently, thereby providing driving force for the vehicle spare tire 200 when the vehicle needs it.

[0079] Specifically, when the vehicle 300 is out of control due to tire burst, off-road driving or underwater driving, the wheel hub motor 2 can drive the wheel rim 1 to rotate, thereby providing driving force for the vehicle 300.

[0080] Further, the hub motor 2 further comprises a mounting bracket 21, a rotor mechanism 22, a stator mechanism 23 and a first sealing member 24. The mounting bracket 21 is arranged inside the rim 1 coaxially with the rim 1, and a first accommodating cavity 211 is formed in the mounting bracket 21. The rotor mechanism 22 is arranged in the first accommodating cavity 211 and fixedly connected with the mounting bracket 21. The stator mechanism 23 is arranged in the first accommodating cavity 211. The outer ring 2415 of the first sealing member 24 is connected with the stator mechanism 23, and the inner ring 2411 of the first sealing member 24 is rotatably connected with the mounting bracket 21. The first sealing member 24 and the outer wall of the stator mechanism 23 can seal the first accommodating cavity 211, so as to seal the rotor mechanism 22 and part of the stator mechanism 23 in the first accommodating cavity 211. When the stator mechanism 23 is powered, the rotor mechanism 22 and the mounting bracket 21 will rotate at the same time. The mounting bracket 21 is rotatably connected with the stator mechanism 23 through the first sealing member 24, and the first sealing member 24 is rotatably connected with the mounting bracket 21. Therefore, the mounting bracket 21 can rotate relative to the stator mechanism 23, and the stator mechanism 23 will not rotate.

[0081] The first sealing member 24 is the sealing member described above.

[0082] Further, the stator mechanism 23 and the first sealing member 24 can seal the part of the stator mechanism 23 away from the first sealing member 24 and the rotor mechanism 22 in the first accommodating cavity 211, so as to prevent the hub motor 2 from being damaged when the water flows in the rim 1 when the wheel assembly 100 is running on water.

[0083] In an optional embodiment, the wheel assembly 100 further comprises a wheel shaft 3, which is arranged in the rim 1 along the axial direction of the rim 1 and rotatably connected with the rim 1. The hub motor 2 further comprises a fixing frame 25, and the stator mechanism 23 is fixed with the wheel shaft 3 through the fixing frame 25.

[0084] As shown in Figure 3 The wheel assembly 100 further comprises a wheel shaft 3, which is arranged in the rim 1 along the axial direction of the rim 1 and rotatably connected with the rim 1.

[0085] Further, the hub motor 2 further comprises a fixing frame 25, which is provided with a mounting hole arranged on the wheel shaft 3. The fixing frame 25 is connected with the stator mechanism 23, so as to fix the stator mechanism 23 with the wheel shaft 3, and prevent the stator mechanism 23 from rotating with the rim 1.

[0086] In an optional embodiment, the mounting bracket 21 is provided with a first opening 212 , the first opening 212 is connected to the first accommodating cavity 211 , and the stator mechanism 23 is close to the first opening 212 relative to the rotor mechanism 22 ; the fixing frame 25 connects the stator mechanism 23 and the axle 3 at the first opening 212 .

[0087] like Figure 3 As shown, the mounting bracket 21 has a first opening 212 on a side close to the axle 3. The first opening 212 communicates with the first accommodating cavity 211. The rotor mechanism 22 is located on a side of the first accommodating cavity 211 away from the first opening 212, and the stator mechanism 23 is located on a side of the first accommodating cavity 211 close to the opening. The fixing bracket 25 passes through the first opening 212 to connect the stator mechanism 23 and the axle 3. The first opening 212 provides a clearance for the fixing bracket 25 to connect the stator mechanism 23 and the axle 3.

[0088] In an optional embodiment, the hub motor 2 includes two first seals 24. On one side of the first opening 212, one side of one of the first seals 24 is connected to the mounting bracket 21, and the other side is connected to the stator mechanism 23; on the other side of the first opening 212, one side of the other first seal 24 is connected to the mounting bracket 21, and the other side is connected to the stator mechanism 23.

[0089] like Figure 3 As shown, the mounting bracket 21 includes a first baffle 213 and a second baffle 214. The first baffle 213 and the second baffle 214 are spaced apart along the axial direction of the rim 1. The gap between the first baffle 213 and the second baffle 214 in the axial direction of the rim 1 is the first opening 212. One side of the first opening 212 is the first baffle 213, and the other side of the first opening 212 is the second baffle 214.

[0090] To further illustrate, the in-wheel motor 2 includes two first seals 24, one of which connects the first baffle 213 to one end of the stator mechanism 23, and the other connects the second baffle 214 to the other end of the stator mechanism 23. Providing two first seals 24 improves the sealing performance of the first accommodating cavity 211 and enhances the rotational stability of the mounting bracket 21.

[0091] In an optional embodiment, the stator mechanism 23 includes a stator 231 and a stator mounting frame 232, the stator 231 is fixed to the stator mounting frame 232, and a first mounting groove 2321 is provided at one end of the stator mounting frame 232 close to the first opening 212; the mounting bracket 21 is provided with a second mounting groove 215, the outer ring 2415 of the first seal 24 is embedded in the first mounting groove 2321, and the inner ring 2411 of the first seal 24 is embedded in the second mounting groove 215.

[0092] like Figure 3 and Figure 4 As shown, the stator mechanism 23 includes a stator and a stator mounting frame 232, the stator 231 is arranged on the side of the stator mounting frame 232 away from the first opening 212, and the side of the stator mounting frame 232 close to the first opening 212 is provided with a first mounting groove 2321; a second mounting groove 215 is provided on the mounting bracket 21, specifically, the second mounting groove 215 is provided on the side of the first baffle 213 and the second baffle 214 located on the first accommodating cavity 211; the outer ring 2415 of the first seal 24 is embedded in the first mounting groove 2321, which can make the connection between the first seal 24 and the stator mounting frame 232 more stable, and the inner ring 2411 of the first seal 24 is embedded in the second mounting groove 215, and the first seal 24 and the mounting bracket 21 can rotate relative to each other, so that the stator mechanism 23 and the mounting bracket 21 achieve a relative rotation relationship, and the first seal 24 can also seal the gap between the mounting bracket 21 and the stator mounting frame 232.

[0093] In an optional embodiment, the hub motor 2 further includes a reduction mechanism 26 , and the reduction mechanism 26 is connected to the rotor mechanism 22 and the wheel rim 1 respectively.

[0094] like Figure 3 As shown, the in-wheel motor 2 also includes a reduction mechanism 26. The rotor mechanism 22 is connected to the reduction mechanism 26, which is in turn connected to the rim 1. Rotation of the rotor mechanism 22 drives the reduction mechanism 26, which in turn drives the rim 1, thereby driving the rim 1. The reduction mechanism 26 increases the output torque of the wheel assembly 100, enhancing the off-road performance and escape capability of the wheel assembly 100 when used as a drive wheel.

[0095] In an alternative embodiment, the speed reduction mechanism 26 comprises a sealing cover 261 and a gear assembly 262; the sealing cover 261 is internally formed with a second accommodating cavity 2611, and the sealing cover 261 is provided with a second opening 2612 at one end, and the second accommodating cavity 2611 is in communication with the second opening 2612; the gear assembly 262 is rotationally connected with the wheel shaft 3, and the gear assembly 262 is arranged in the first accommodating cavity 211 and connected with the sealing cover 261, and partially protrudes from the second accommodating cavity 2611 through the second opening 2612; the part of the gear assembly 262 protruding from the second opening 2612 is connected with the mounting bracket 21.

[0096] As shown in Figure 3 , the speed reduction mechanism 26 comprises a sealing cover 261 and a gear assembly 262. The sealing cover 261 is internally formed with a second accommodating cavity 2611, and the sealing cover 261 is provided with a second opening 2612 at one end, and the second accommodating cavity 2611 is in communication with the second opening 2612; the gear assembly 262 is arranged in the second accommodating cavity 2611, and part of the gear assembly 262 protrudes from the second accommodating cavity 2611 through the second opening 2612, and the part of the gear assembly 262 protruding from the second opening 2612 is connected with the mounting bracket 21; when the rotor mechanism 22 rotates, the mounting bracket 21 will rotate, thereby driving the gear assembly 262 to rotate.

[0097] The gear assembly 262 is sleeved on the wheel shaft 3, and the gear assembly 262 is rotationally connected with the wheel shaft 3 through a bearing, and the gear assembly 262 and the wheel shaft 3 can relatively rotate, so that when the gear assembly 262 rotates, the wheel shaft 3 will not rotate.

[0098] In an alternative embodiment, the speed reduction mechanism 26 further comprises a second sealing member 263, which is the sealing member described above, and the second sealing member 263 is arranged at the second opening 2612, the inner ring 2411 of the second sealing member 263 is rotationally connected with the gear assembly 262, and the outer ring 2415 of the second sealing member 263 is fixedly connected with the sealing cover 261, and the gear assembly 262 can rotate relative to the sealing cover 261.

[0099] As shown in Figure 3 , the speed reduction mechanism 26 further comprises a second sealing member 263, which can seal the gap between the gear assembly 262 and the sealing cover 261.

[0100] Specifically, the outer ring 2415 of the second seal 263 is connected with the inner wall of the second opening 2612, and the inner ring 2411 of the second seal 263 is rotationally connected with the gear assembly 262. On the one hand, the second seal 263 can seal the gap between the gear assembly 262 and the seal cover 261 at the second opening 2612, and on the other hand, the first seal 24 can enable the relative rotation between the gear assembly 262 and the seal cover 261, so that the rotational speeds of the gear assembly 262 and the seal cover 261 are different.

[0101] In an alternative embodiment, an annular groove 26121 is formed on the inner wall of the second opening 2612, a third mounting groove 2621 is formed on the side wall of the gear assembly 262, the inner ring 2411 of the second seal 263 is embedded in the annular groove 26121, and the outer ring 2415 of the second seal 263 is embedded in the third mounting groove 2621.

[0102] Further, as shown in Figure 3 and Figure 5 , the inner wall of the second opening 2612 is circumferentially provided with an annular groove 26121, the side wall of the part of the gear assembly 262 located at the second opening 2612 is provided with a third mounting groove 2621, the inner ring 2411 of the second seal 263 is embedded in the annular groove 26121, and the outer ring 2415 of the second seal 263 is embedded in the third mounting groove 2621. The inner ring 2411 of the second seal 263 can rotate relative to the seal cover, so the seal cover 261 and the gear assembly 262 can also rotate relative to each other, and the second seal 263 can also seal the gap between the gear assembly 262 and the seal cover 261 at the second opening 2612.

[0103] In an alternative embodiment, the wheel assembly 100 further comprises a first spoke 4, which is arranged at the axial end of the rim 1.

[0104] The seal cover 261 further comprises a third opening 2613, and the second opening 2612 and the third opening 2613 are arranged opposite to each other.

[0105] The first spoke 4 is connected with the seal cover 261 at the third opening 2613 and closes the third opening 2613.

[0106] As shown in Figure 3 , the wheel assembly 100 further comprises a first spoke 4, which is arranged at the axial end of the rim 1, and the first spoke 4 is fixedly connected with the rim 1.

[0107] Further, the sealing cover 261 is provided with a third opening 2613, which is in communication with the second accommodating cavity 2611, and the gear assembly 262 is installed into the second accommodating cavity 2611 at the third opening 2613.

[0108] The first spoke 4 is connected with the sealing cover 261 at the third opening 2613, and the first spoke 4 can close the third opening 2613, so that the second accommodating cavity 2611 is in a sealed state, thereby avoiding water from outside entering the second accommodating cavity 2611.

[0109] In an alternative embodiment, the first spoke 4 comprises a first shaft segment 41 and a second shaft segment 42 connected with each other, the first shaft segment 41 is partially connected with the sealing cover 261, and the first shaft segment 41 and the second shaft segment 42 are internally provided with mounting holes, and the mounting holes are provided with a first bearing 6, and one end of the wheel shaft 3 is connected with the first bearing 6.

[0110] In an alternative embodiment, the second shaft segment 42 protrudes from the axial end of the rim 1, and the outer wall of the second shaft segment 42 is provided with a second bearing 7.

[0111] The second shaft segment 42 is used to externally connect a driving mechanism to drive the wheel assembly 100 to be able to overturn or rotate.

[0112] Further, the outer wall of the second shaft segment 42 is provided with the second bearing 7, and the driving mechanism is connected with the second bearing 7, so that when the first spoke 4 and the rim 1 rotate, the driving mechanism will not rotate with the first spoke 4 and the rim 1.

[0113] In an alternative embodiment, the first spoke 4 further comprises a third shaft segment 43, the third shaft segment 43 is connected with the second shaft segment 42, and the third shaft segment 43 is used to externally connect a winch.

[0114] Further, the first spoke 4 further comprises the third shaft segment 43, the third shaft segment 43 is connected with the second shaft segment 42, and the third shaft segment 43 and the second shaft segment 42 are concentrically arranged, and the third shaft segment 43 is used to externally connect a winch, so that the wheel assembly 100 can drive other components that need to rotate, such as the winch.

[0115] In an alternative embodiment, the first spoke 4 further comprises a plurality of first spokes 44, and the plurality of first spokes 44 are arranged along the circumference of the first shaft segment 41.

[0116] In an alternative embodiment, as shown in Figure 6 The first spoke 44 is in a rectangular shape. When the wheel assembly 100 travels on water, the rectangular spoke can reduce resistance.

[0117] In an alternative embodiment, the wheel assembly 100 further comprises a second spoke 5, which is arranged at the other end of the rim 1, and the second spoke 5 is rotatably connected with the axle 3.

[0118] In an alternative embodiment, as shown in Figure 7 The second spoke 5 comprises a second spoke 51, which has a width smaller at the end close to the axle 3 than at the end away from the axle 3. When the wheel assembly 100 is running on water, the spoke with such a shape can provide power for the whole vehicle for water floating driving.

[0119] According to a third aspect of the embodiments of the present application, a vehicle spare tire 200 is provided, comprising:

[0120] The wheel assembly 100 described above;

[0121] A first driving mechanism 8, a driving end of the first driving mechanism 8 is connected with the wheel assembly 100, and the first driving mechanism 8 is used to drive the wheel assembly 100 to rotate around the Z direction;

[0122] A second driving mechanism 9, a driving end of the second driving mechanism 9 is connected with the first driving mechanism 8, and the second driving mechanism 9 is capable of driving the first driving mechanism 8 to rotate around the X direction;

[0123] The X direction intersects with the Z direction.

[0124] The vehicle spare tire 200 is used to be installed on the body structure at the rear of a vehicle.

[0125] As shown in Figure 8 The vehicle spare tire comprises the wheel assembly 100, the first driving mechanism 8 and the second driving mechanism 9. The driving end of the first driving mechanism 8 is connected with the wheel assembly 100, and the first driving mechanism 8 is capable of driving the wheel assembly 100 to rotate around the Z direction, so as to drive the wheel assembly 100 to rotate through the first driving mechanism 8 to assist the vehicle to turn. The driving end of the second driving mechanism 9 is connected with the first driving mechanism 8, and the second driving mechanism 9 is capable of driving the first driving mechanism 8 to rotate around the X direction. Since the first driving mechanism 8 is connected with the wheel assembly 100, when the second driving mechanism 9 drives the first driving mechanism 8 to rotate around the X direction, the wheel assembly 100 will also rotate with the first driving mechanism 8. The wheel assembly 100 is driven to rotate around the X direction through the second driving mechanism 9, so as to make the wheel assembly 100 contact with the ground or be stored at the rear of the vehicle.

[0126] The X direction, the Y direction and the Z direction are as shown in Figure 8When the spare tire is installed on the vehicle, the X direction is the width direction of the vehicle, the Y direction is the length direction of the vehicle, and the Z direction is the height direction of the vehicle.

[0127] In an optional embodiment, the vehicle spare tire 200 also includes a third drive mechanism 10 and a connecting shaft 11. The third drive mechanism 10 and the second drive mechanism 9 are spaced apart along the X direction. The driving end of the third drive mechanism 10 is connected to one end of the connecting shaft 11, the driving end of the second drive mechanism 9 is connected to the other end of the connecting shaft 11, and the first drive mechanism 8 is connected to the connecting shaft 11.

[0128] like Figure 8 As shown, the vehicle spare tire 200 also includes a third drive mechanism 10 and a connecting shaft 11. The third drive mechanism 10 and the second drive mechanism 9 are spaced apart along the X-direction. The driving end of the third drive mechanism 10 is connected to one end of the connecting shaft 11, and the driving end of the second drive mechanism 9 is connected to the other end of the connecting shaft 11. The first drive mechanism 8 is connected to the connecting shaft 11. The second drive mechanism 9 and the third drive mechanism 10 can drive the connecting shaft 11 to rotate about the X-direction. Since the first drive mechanism 8 is connected to the connecting shaft 11, it can also rotate accordingly.

[0129] The second driving mechanism 9 and the third driving mechanism 10 are arranged to work together to drive the wheel assembly 100 to rotate around the X direction, which can improve the stability of its rotation.

[0130] In an optional embodiment, the vehicle spare tire 200 also includes a connecting arm 12, the connecting arm 12 includes a first connecting end, a second connecting end 121 and a third connecting end 122, the first connecting end and the second connecting end 121 are spaced apart along the X direction, the first connecting end and the second connecting end 121 are connected to both sides of the wheel assembly 100, and the third connecting end 122 is connected to the driving end of the first driving mechanism 8.

[0131] like Figure 8 As shown, the vehicle spare tire 200 further includes a connecting arm 12, which includes a first connecting end, a second connecting end 121, and a third connecting end 122. The first connecting end and the second connecting end 121 are spaced apart along the X direction, and the first connecting end and the second connecting end 121 are respectively connected to the two sides of the wheel assembly 100, and the third connecting end 122 is connected to the driving end of the first driving mechanism 8, thereby improving the installation stability of the wheel assembly 100.

[0132] To further explain, the first connecting end is used to connect to the second bearing 7 , and the second connecting end 121 is used to connect to the axle 3 .

[0133] According to a fourth aspect of the embodiments of the present application, a vehicle 300 is provided, and the vehicle spare tire 200 is arranged in the vehicle 300.

[0134] As shown in Figure 11 , when the vehicle 300 does not need to use the vehicle spare tire 200, the vehicle spare tire 200 is arranged in the same position as a normal vehicle spare tire, and does not affect the normal driving of the vehicle 300 on land.

[0135] As shown in Figure 9 , Figure 10 and Figure 12 , when the vehicle 300 is in the working conditions of driving with a flat tire, off-road escape, underwater driving, etc., the second driving mechanism 9 and the third driving mechanism 10 overturn the wheel assembly 100 by a certain angle to contact the ground or enter the water, and the hub motor 2 works to output power to the whole vehicle, so that the vehicle 200 realizes the functions of driving with a flat tire, off-road escape, underwater driving, etc.

[0136] Although some specific embodiments of the present application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration, and are not intended to limit the scope of the present application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A seal, characterized in that: The sealing member comprises a body, the body comprises an inner ring, the inner ring is provided with a first sealing lip and a second sealing lip, a cavity is formed between the first sealing lip and the second sealing lip; The body further comprises an outer ring, and the outer ring is provided with a friction portion.

2. The seal according to claim 1, wherein: An extension line of the first sealing lip forms an acute angle or an obtuse angle with the axis of the body; and / or an extension line of the second sealing lip forms an acute angle or an obtuse angle with the axis of the body.

3. The seal according to claim 1, wherein: The sealing member further includes a reinforcement frame, which is arranged inside the body.

4. The seal according to claim 1, wherein: A receiving groove is formed on the side wall of the body near the inner ring. The sealing member further comprises a dustproof pad which is arranged in the receiving groove.

5. A wheel assembly, characterized in that: It includes a wheel rim and a wheel hub motor, wherein the wheel hub motor is arranged inside the wheel rim and can drive the wheel rim to rotate; The hub motor comprises: A mounting bracket, wherein a first accommodating cavity is formed inside the mounting bracket; a rotor mechanism, the rotor mechanism being disposed in the first accommodating cavity and fixedly connected to the mounting bracket; a stator mechanism, the stator mechanism being disposed in the first accommodating cavity; The first seal is the seal according to any one of claims 1 to 4, the outer ring of the first seal is connected to the stator mechanism, and the inner ring of the first seal is connected to the mounting bracket.

6. The wheel assembly according to claim 5, characterized in that: The wheel assembly further includes a wheel axle, which is disposed through the wheel rim along the axial direction of the wheel rim and is rotatably connected to the wheel rim; The hub motor further includes a fixing frame, and the stator mechanism is fixed to the wheel axle via the fixing frame.

7. The wheel assembly according to claim 6, characterized in that: The mounting bracket is provided with a first opening, the first opening being communicated with the first accommodating cavity, the stator mechanism being close to the first opening relative to the rotor mechanism, and the fixing frame being connected to the stator mechanism and the wheel axle at the first opening.

8. The wheel assembly according to claim 7, characterized in that: The hub motor includes two first seals. On one side of the first opening, one side of one of the seals is connected to the mounting bracket, and the other side is connected to the stator mechanism; on the other side of the first opening, one side of the other first seal is connected to the mounting bracket, and the other side is connected to the stator mechanism.

9. The wheel assembly according to claim 7, characterized in that: The stator mechanism includes a stator and a stator mounting frame, the stator is fixed to the stator mounting frame, and a first mounting groove is formed at one end of the stator mounting frame close to the first opening; The mounting bracket is provided with a second mounting groove, the outer ring of the first sealing component is embedded in the first mounting groove, and the inner ring of the first sealing component is embedded in the second mounting groove.

10. The wheel assembly according to claim 6, characterized in that: The hub motor further includes a reduction mechanism, which is connected to the rotor mechanism and the wheel rim respectively.

11. The wheel assembly according to claim 10, characterized in that: The deceleration mechanism comprises: A sealing cover, wherein a second accommodating cavity is formed inside the sealing cover, a second opening is formed at an end of the sealing cover, and the second accommodating cavity is communicated with the second opening; a gear assembly, the gear assembly being rotatably connected to the wheel shaft, the gear assembly being disposed in the second accommodating chamber and connected to the sealing cover, and partially protruding from the first accommodating chamber through the second opening; A portion of the gear assembly protruding from the second opening is connected to the mounting bracket.

12. The wheel assembly according to claim 11, characterized in that: The deceleration mechanism also includes a second seal, which is a seal as described in any one of claims 1 to 5. The second seal is arranged at the second opening, the inner ring of the second seal is rotatably connected to the gear assembly, and the outer ring of the second seal is fixedly connected to the sealing cover, and the gear assembly can rotate relative to the sealing cover.

13. The wheel assembly according to claim 12, characterized in that: An annular groove is provided on the inner wall of the second opening, a third mounting groove is provided on the side wall of the gear assembly, the inner ring of the second seal is embedded in the annular groove, and the outer ring of the second seal is embedded in the third mounting groove.

14. The wheel assembly according to claim 12, characterized in that: The wheel assembly further includes a first spoke, which is provided at an axial end of the rim; The sealing cover further includes a third opening, and the second opening is arranged opposite to the third opening; The first spoke is connected to the sealing cover at the third opening and closes the third opening.

15. The wheel assembly according to claim 14, characterized in that: The first spoke includes a first shaft segment and a second shaft segment connected to each other, the first shaft segment is partially connected to the sealing cover, mounting holes are opened inside the first shaft segment and the second shaft segment, a first bearing is provided in the mounting hole, and one end of the wheel axle is connected to the first bearing.

16. The wheel assembly according to claim 15, characterized in that: The second shaft segment protrudes from the axial end of the rim, and a second bearing is provided on the outer wall of the second shaft segment.

17. The wheel assembly according to claim 15, characterized in that: The first spoke further includes a third shaft segment, the third shaft segment is connected to the second shaft segment, and the third shaft segment is used for externally connecting a winch.

18. The wheel assembly according to claim 15, characterized in that: The first spoke further includes a first spoke, and the first spoke is rectangular.

19. The wheel assembly according to claim 6, characterized in that The wheel assembly further includes a second spoke, which is arranged at the other end of the rim. The second spoke includes a second spoke, and the width of the second spoke at an end close to the wheel axle is smaller than the width at an end away from the wheel axle.

20. A spare tire for a vehicle, characterized in that: include: The wheel assembly according to any one of claims 5 to 19; a first driving mechanism, wherein a driving end of the first driving mechanism is connected to the wheel assembly, and the first driving mechanism is used to drive the wheel assembly to rotate around the Z direction; a second driving mechanism, wherein a driving end of the second driving mechanism is connected to the first driving mechanism, and the second driving mechanism is capable of driving the first driving mechanism to rotate around the X direction; The X direction intersects the Z direction.

21. The vehicle spare tire according to claim 20, characterized in that: The vehicle spare tire also includes a third drive mechanism and a connecting shaft. The third drive mechanism and the second drive mechanism are arranged at intervals along the X direction. The driving end of the third drive mechanism is connected to one end of the connecting shaft, the driving end of the second drive mechanism is connected to the other end of the connecting shaft, and the first drive mechanism is connected to the connecting shaft.

22. The vehicle spare tire according to claim 20, characterized in that: The vehicle spare tire also includes a connecting arm, which includes a first connecting end, a second connecting end and a third connecting end. The first connecting end and the second connecting end are arranged at intervals along the X direction. The first connecting end and the second connecting end are connected to both sides of the wheel assembly, and the third connecting end is connected to the driving end of the first driving mechanism.

23. A vehicle, characterized in that: Comprising a vehicle spare tire as described in any one of claims 20-22.

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