Wheel and all-terrain vehicle set

Abstract

The present invention relates to a wheel assembly comprising a rim mounting seat (1) and a drive shaft (2) coaxially connected, a bracket (3) provided with a first assembly hole, a bearing (4), a first and a second sealing member (5, 6), at least a part of the drive shaft and the rim mounting seat is arranged in the first assembly hole; the first and second sealing members and the bearing are successively arranged along an axial direction of the drive shaft, and the first sealing member and the bearing are mounted in an interference fit between an outer peripheral surface of the rim mounting seat and an inner wall surface of the first assembly hole, and the second sealing member is mounted in an interference fit between an outer peripheral surface of the drive shaft and the inner wall surface of the first assembly hole.

Description

Title of the invention: Wheel and all-terrain vehicle assembly Technical field

[0001] The present invention relates to the technical field of vehicles, in particular to a wheel assembly and an off-road vehicle. Technological background

[0002] A wheel of the vehicle mainly bears the load via a front steering knuckle or a rear wheel bearing seat and transmits the torque via a wheel hub, so as to realize the function of rotating the wheel, and the front steering knuckle or the rear wheel bearing is rotatably connected to the rim mounting seat and the driving wheel via a bearing. However, in a wheel assembly of the prior art, the bearings are generally exposed, and when the environment is harsh, for example, when the wheel assembly is used by an off-road vehicle, foreign matter easily enters the bearing, which aggravates the wear and failure of the bearing, thereby reducing its service life. Summary of the present invention

[0003] The present invention aims to solve, at least to a certain extent, one of the technical problems of the technological background.

[0004] Therefore, the embodiments of the present invention provide a wheel assembly which has the advantages of good sealing around the bearing and long bearing life.

[0005] The present invention also provides an all-terrain vehicle.

[0006] The wheel assembly of the embodiments of the present invention comprises a rim mounting seat, a drive shaft and a bracket, wherein the rim mounting seat and the drive shaft are coaxially connected, and the bracket has a first assembly hole, and at least a portion of the drive shaft and the rim mounting seat are disposed in the first assembly hole; and a bearing, a first sealing member and a second sealing member, wherein the first sealing member, the bearing and the second sealing member are successively disposed along an axial direction of the drive shaft; the first sealing member and the bearing are both clamped between an outer peripheral surface of the rim mounting seat and an inner wall surface of the first assembly hole;and the second sealing member is clamped between an outer peripheral surface of the drive shaft and the inner wall surface of the first assembly hole. ;

[0007] According to embodiments of the wheel assembly of the present invention, the bracket is rotatably connected to the rim mounting seat and the drive shaft via a bearing, and a first sealing member is clamped between the outer peripheral surface of the rim mounting seat and the inner wall surface of the first assembly hole in the bracket, and a second sealing member is clamped between the outer peripheral surface of the drive shaft and the inner wall surface of the first assembly hole in the bracket, and the first sealing member and the second sealing member are respectively located on both sides of the bearing in the axial direction of the bearing.At this time, the bearing is separated from the outside by the first sealing element and the second sealing element, and foreign impurities are less likely to enter the bearing, which effectively reduces the risk of wear and failure of the bearing and prolongs its service life.

[0008] In some embodiments, the first sealing member and the second sealing member comprise a lip seal or a sealing ring.

[0009] In some embodiments, the carrier comprises a front spindle or a rear wheel bearing seat.

[0010] In some embodiments, the bearing comprises an inner ring, an outer ring, a third sealing member, a fourth sealing member, and a rolling element, wherein the rolling element is mounted in contact between an outer peripheral surface of the inner ring and an inner peripheral surface of the outer ring; the third sealing member and the fourth sealing member are both installed between the outer peripheral surface of the inner ring and the inner peripheral surface of the outer ring; and the third sealing member and the fourth sealing member are located on either side of the rolling element in an axial direction of the inner ring.

[0011] In some embodiments, the third and fourth sealing members are comprised of a sealing ring or a dust shield.

[0012] In some embodiments, the outer peripheral surface of the rim mounting seat comprises a first peripheral surface and a second peripheral surface, wherein a diameter of the first peripheral surface is larger than a diameter of the second peripheral surface, the first peripheral surface being separated from the second peripheral surface by a first shoulder, the first sealing element being sleeved on the first peripheral surface, and the inner ring being sleeved on the second peripheral surface; the drive shaft having a second shoulder opposite the first shoulder, and the inner ring being located between the first shoulder and the second shoulder.

[0013] In some embodiments, the second shoulder divides the drive shaft into a first shaft section and a second shaft section, and the second sealing member is sleeved on an outer peripheral surface of the first shaft section; and the wheel assembly further comprises a locking piece, the rim mounting seat has a second assembly hole, and the second shaft section passes through the second assembly hole and is connected to the locking piece.

[0014] In some embodiments, the first assembly hole includes a first hole section and a second hole section, an opening of the first hole section being larger than an opening of the second hole section, and an inner wall surface of the first hole section passing to an inner wall surface of the second hole section via a third shoulder; and the first sealing member and the outer ring are both mounted in the first hole section, and the second sealing member is mounted in the second hole section.

[0015] In some embodiments, the inner wall surface of the first bore section has an annular groove, and the wheel assembly further includes a retaining ring, a portion of the retaining ring being mounted in the annular groove, and another portion of the retaining ring being located between the first sealing member and the outer ring.

[0016] An off-road vehicle according to embodiments of the present invention comprises the wheel assembly as described in one of the above embodiments.

[0017] The technical advantages of the off-road vehicle according to the embodiments of the present invention are the same as those of the wheel assembly of the above embodiments, and will not be repeated here. Brief description of the figures

[0018] [Fig.l] is a schematic view of a wheel assembly according to one embodiment of the present invention.

[0019] [Fig.2] is an enlarged partial view of a wheel assembly according to a method of embodiment of the present invention.

[0020] Reference figures:

[0021] 1. rim mounting seat; 11. first peripheral surface; 12. second peripheral surface; 13. first shoulder; 2. drive shaft; 21. first shaft section; 22. second shaft section; 23. second shoulder; 3. support; 31. first hole section; 311. annular groove; 32. second hole section; 33. third shoulder; 4. bearing; 4L outer ring; 42. inner ring; 43. rolling element; 44. third sealing element; 45. fourth sealing element; 5. first sealing element; 6. second sealing element; 7. locking part. Detailed description

[0022] Embodiments of the present invention, examples of which are illustrated in the accompanying drawings, will be described in detail hereinafter. The embodiments described below with reference to the drawings are illustrative and are intended to explain the invention, but should not be construed as limiting the invention.

[0023] Hereinafter, a wheel assembly according to one embodiment of the present invention will be described with reference to FIGS. 1 and 2.

[0024] The wheel assembly of the embodiments of the present invention comprises a rim mounting seat 1, a drive shaft 2, a bracket 3, a bearing 4, a first sealing member 5 and a second sealing member 6. The rim mounting seat 1 and the drive shaft 2 are coaxially connected, and the bracket 3 is provided with a first assembly hole, and at least a part of the drive shaft 2 and the rim mounting seat 1 are arranged in the first assembly hole. The first sealing member 5, the bearing 4 and the second sealing member 6 are arranged in succession along an axial direction of the drive shaft 2.The first sealing member 5 and the bearing 4 are all clamped between an outer peripheral surface of the rim mounting seat 1 and an inner wall surface of the first assembly hole, and the second sealing member 6 is clamped between an outer peripheral surface of the drive shaft 2 and the inner wall surface of the first assembly hole.

[0025] According to the wheel assembly of the embodiments of the present invention, the bracket 3 is rotatably connected to the rim mounting seat 1 and the drive shaft 2 via the bearing 4, and the first sealing member 5 is fitted by interference between the outer peripheral surface of the rim mounting seat 1 and the inner wall surface of the first assembly hole in the bracket 3, and the second sealing member 6 is fitted by interference between the outer peripheral surface of the drive shaft 2 and the inner wall surface of the first assembly hole in the bracket 3, and the second sealing member 6 is fitted between the outer peripheral surface of the drive shaft 2 and the inner wall surface of the first assembly hole in the bracket 3,and the first sealing member 5 and the second sealing member 6 are located on both sides of the bearing 4 in the axial direction of the bearing 4. At this time, the first sealing member 5 and the second sealing member 6 separate the bearing 4 from the outside and, therefore, the foreign impurity is less, likely to penetrate into the bearing 4, which effectively reduces the risk of wear and failure of the bearing 4 and prolongs the service life of the bearing 4.

[0026] It should be noted that the outer peripheral surface of the mounting seat of the rim 1 and the drive shaft 2, as well as the inner wall surface of the first assembly hole in the bracket 3, jointly surround an annular chamber with two openings at two ends of the annular chamber. The first sealing member 5, the bearing 4 and the second sealing member 6 are all mounted in the annular chamber, and the first sealing member 5 and the second sealing member 6 are adjacent to two openings at two ends of the annular chamber respectively.

[0027] In some embodiments, the first sealing element 5 and the second sealing element 6 comprise a lip seal or a sealing ring, the sealing ring being an O-ring.

[0028] In other words, the first sealing member 5 and the second sealing member 6 may both be oil seals, or both sealing rings, or the lip seal and the sealing ring respectively. The oil seal and the sealing ring with interference fit can stably and reliably seal the cavities on both sides of the bearing 4 when the carrier 3 rotates relative to the rim mounting seat 1 and the drive shaft 2, thereby reducing the probability of impurities entering the bearing 4 by mistake.

[0029] More specifically, as shown in Figures 1 and 2, the first sealing element 5 and the second sealing element 6 are oil seals.

[0030] In some embodiments, the support 3 comprises a front steering knuckle or a rear wheel bearing seat.

[0031] The bracket 3 can be the front steering knuckle, so that the wheel assembly can be used as the front wheel of a vehicle such as an off-road vehicle, and the bracket 3 can also be a rear wheel bearing seat, so that the wheel assembly can be used as the rear wheel of a vehicle such as an off-road vehicle, The application scope of the wheel assembly of the embodiments of the present invention is thus expanded, and all the wheels of the off-road vehicles can apply the wheel assembly of the embodiments of the present invention, so that the rotation stability of all the wheels of the off-road vehicles is higher and the adaptability of all the wheels of the off-road vehicles to harsh environments is stronger.

[0032] In some embodiments, as shown in [Fig. 2], the bearing 4 comprises an inner ring 42, an outer ring 41, a third sealing element 44, a fourth sealing element 45 and a rolling element 43. The rolling element is mounted in contact between an outer peripheral surface of the inner ring 42 and an inner peripheral surface of the outer ring 41, and the third sealing element 44 and the fourth sealing element 45 are mounted between the outer peripheral surface of the inner ring 42 and the inner peripheral surface of the outer ring 41. The third sealing element 44 and the fourth sealing element 45 are located on either side of the rolling element in the axial direction of the inner ring 42.

[0033] Therefore, when foreign impurities mistakenly pass through the first sealing member 5 and the second sealing member 6, the third sealing member 44 and the fourth sealing member 45 prevent the impurities from further penetrating into the area where the rolling element 43 is located. The aforementioned two-step sealing method further prevents the impurities from affecting the rolling element 43 of the bearing relative to the inner ring 42 and the outer ring 41, so that the rolling element 43 is less subject to wear when rolling relative to the inner ring 42 and the outer ring 41, and thus the service life of the bearing 4 is longer.

[0034] More specifically, one side of the rolling element 43 is provided with a third sealing element 44 and a first sealing element 5 successively, and the other side of the rolling element 43 is provided with a fourth sealing element 45 and a second sealing element 6 successively.

[0035] In some embodiments, the third sealing member 44 and the fourth sealing member 45 comprise a sealing ring or a dust shield.

[0036] The sealing ring and the dust cover can effectively prevent external impurities from entering the area where the rolling element 43 is located, thereby effectively reducing the wear rate of the rolling element 43, the inner ring 42 and the outer ring 41, and prolonging the service life of the bearing 4.

[0037] In some embodiments, as shown in Figures 1 and 2, the peripheral surface of the rim mounting seat 1 comprises a first peripheral surface 11 and a second peripheral surface 12, the diameter of the first peripheral surface 11 is larger than the diameter of the second peripheral surface 12, the first peripheral surface 11 is connected to the second peripheral surface 12 by a first shoulder 13, the first sealing element 5 is sleeved on the first peripheral surface 11, and the inner ring 42 is sleeved on the second peripheral surface 12. The drive shaft 2 has a second shoulder 23 opposite the first shoulder 13, and the inner ring 42 is located between the first shoulder 13 and the second shoulder 23.

[0038] In other words, once the drive shaft 2 is connected to the rim mounting seat 1, the inner ring 42 of the bearing 4 is sandwiched between the first shoulder 13 and the second shoulder 23, so that the relative fixation of the bearing 4, the drive shaft 2 and the rim mounting seat 1 in the axial direction of the bearing 4 is realized, and the bearing 4 is not easy to shake or even fall off under the condition that the drive shaft 2 and the rim mounting seat 1 are stably connected, which effectively guarantees the operation of the bearing 4.

[0039] More specifically, the radial dimensions of the first shoulder 13 and the second shoulder 23 on the drive shaft 2 are less than or equal to the radial dimension (thickness) of the inner ring 42. Once the drive shaft 2 is connected to the mounting seat of the rim 1, the inner ring 42 is pressed between the first shoulder 13 and the second shoulder 23.

[0040] In some embodiments, as shown in [Fig. 2], the second shoulder 23 divides the drive shaft 2 into a first shaft section 21 and a second shaft section 22, and the second sealing member 6 is sleeved on the outer peripheral surface of the first shaft section 21. The wheel assembly also comprises a locking piece 7, the rim mounting seat 1 is provided with a second assembly hole, and the second shaft section 22 passes through the second assembly hole and is connected to the locking piece 7.

[0041] The second shaft section 22 passes through the second assembly hole and is connected to the locking piece 7, so that the coaxial connection between the drive shaft 2 and the rim mounting seat 1 can be realized, and the axial limit of the bearing 4 can also be realized, and the assembly and disassembly of the wheel assembly are convenient and reliable.

[0042] More specifically, the locking piece 7 may be a locking nut, and the second shaft section 22 is provided with an external thread. Once the portion of the second shaft section 22 provided with the external thread passes through the second assembly hole, the locking nut is screwed onto the external thread. At this point, the locking piece 7 may also comprise a pin. In this case, an insertion hole is provided on the outer peripheral surface of the second shaft section 22, and the insertion hole is located on the side of the locking thread away from the first shaft section 21, and extends along the radial direction of the second shaft section 22. A portion of the pin fits into the insertion hole, and the remainder of the pin abuts against the side of the locking nut opposite the rim mounting seat 1.

[0043] It should be noted that the end of the first shaft section 21 remote from the second shaft section 22 may also be provided with a stop shoulder, and the stop shoulder is adjacent to the second sealing element 6, and the distance between the stop shoulder and the second sealing element 6 is less than the axial dimension of the second sealing member 6, thereby effectively preventing the second sealing member 6 from slipping inadvertently. In addition, the remaining portion of the rim, except for the rim mounting seat 1, is located on the side of the first sealing member 5, away from the bearing 4 and beside the first sealing member 5, and the distance between the remaining portion and the first sealing member 5 is less than the axial dimension of the first sealing member 5, thereby effectively preventing the first sealing member 5 from slipping inadvertently along the axial direction.

[0044] In some embodiments, as shown in [Fig. 2], the first assembly hole comprises a first hole section 31 and a second hole section 32, the opening of the first hole section 31 is larger than the opening of the second hole section 32, and the inner wall surface of the first hole section 31 is connected to the inner wall surface of the second hole section 32 by a third shoulder 33. The first sealing member 5 and the outer ring 41 fit into the first hole section 31, and the second sealing member 6 fits into the second hole section 32.

[0045] When the connection between the drive shaft 2 and the rim mounting seat 1 is loose, the bearing 4 is effectively prevented from sliding along the direction from the first hole section 31 to the second hole section 32 or even falling off the rim mounting seat 1 below the boundary of the third shoulder 33, and thus the structural stability of the wheel assembly is further increased.

[0046] In some embodiments, as shown in [Fig. 2], the inner wall surface of the first hole section 31 is provided with an annular groove 311, and the wheel assembly further comprises a retaining ring (not shown in the figures), a part of the retaining ring fits into the annular groove 311, and the other part of the retaining ring is located between the first sealing member 5 and the outer ring 4L

[0047] The retaining ring and the third shoulder 33 of the carrier 3 respectively abut against the two opposite sides of the outer ring 41 along the axial direction of the outer ring 41, thereby ensuring the relative fixation of the bearing 4 and the carrier 3 in the axial direction of the bearing 4, further ensuring the relative fixation of the carrier 3, the bearing 4, the drive shaft 2 and the rim mounting seat 1 in the axial direction of the bearing 4, and thereby enhancing the structural stability of the wheel assembly.

[0048] An off-road vehicle according to one embodiment of the present invention comprises the wheel assembly according to one of the above embodiments.

[0049] The technical advantages of the off-road vehicle according to the embodiments of the present invention are the same as the technical advantages of the wheel assembly of the above embodiments, which will not be repeated here.

[0050] In describing the present invention, it is to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "top", "bottom", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial" and "circumferential" and the like, is based on the orientation or positional relationship illustrated in the drawings attached to the present invention, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element mentioned must have a specific orientation, and be constructed and used in a specific orientation, so that it cannot be understood as a limitation of the present invention.

[0051] Furthermore, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Therefore, the feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality of" means at least two, such as two, three, etc.

[0052] In the present invention, unless expressly defined, terms such as "install", "interconnect", "connect", "fix" must be understood in a broad sense and may refer, for example, to fixed connections, removable connections or integral connections; they may also refer to mechanical or electrical connections or intercommunications; they may also refer to direct connections or indirect connections via intermediate media; they may also refer to internal communications or interactions between two elements, unless otherwise specified. For those skilled in the art, the specific meanings of the above terms in the present invention may be understood in specific situations.

[0053] In the present invention, unless expressly defined and specified, a structure in which a first feature is "on" or "below" a second feature may include an embodiment in which the first feature is in direct contact with the second feature, or may further include an embodiment in which the first feature and the second feature are in indirect contact via an intermediate member. Furthermore, a first feature "on", "above" or "atop" a second feature may include an embodiment in which the first feature is straight or obliquely "on", "above" or "on top" of the second feature, or simply means that the first feature is at a higher height than the second feature, while a first feature "below", "under" or "down" a second feature may include an embodiment in which the first feature is straight or obliquely "below", "under" or "down" the second feature, or simply means that the first feature is at a lower height than the second feature.

[0054] In the description of the present invention, terms such as "an embodiment", "certain embodiments", "an example", "a specific example" or "some examples" mean that a feature, structure, material or particularity described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. Thus, the appearances of these terms on the site at various places in this specification do not necessarily refer to the same embodiment or example of the present invention. Furthermore, the particular features, structures, materials or traits may be combined in any way in one or more embodiments or examples.Further, without contradiction, persons skilled in the art may combine and unite different embodiments or examples or features of the different embodiments or examples described in this specification.

[0055] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are illustrative and should not be construed as a limitation of the present invention, and that changes, modifications, alternatives, and variations may be made to the above embodiments within the scope of the present invention by those skilled in the art.

Claims

Claims

1. A wheel assembly comprising a rim mounting seat (1), a drive shaft (2) and a bracket (3), wherein the rim mounting seat and the drive shaft are coaxially connected, and the bracket (3) has a first assembly hole, and at least a portion of the drive shaft (2) and the rim mounting seat are disposed in the first assembly hole; and a bearing (4), a first sealing member (5) and a second sealing member (6), wherein the first sealing member (5), the bearing (4) and the second sealing member (6) are successively disposed along an axial direction of the drive shaft; the first sealing member (5) and the bearing (4) are both clamped between an outer peripheral surface of the rim mounting seat (1) and an inner wall surface of the first assembly hole;and the second sealing member (6) is clamped between an outer peripheral surface of the drive shaft and the inner wall surface of the first assembly hole.;

2. A wheel assembly according to claim 1, wherein the first sealing member (5) and the second sealing member (6) comprise a lip seal or a sealing ring.

3. A wheel assembly according to claim 1, wherein the carrier (3) comprises a front spindle or a rear wheel bearing seat.

4. A wheel assembly according to claim 1, wherein the bearing comprises an inner ring (42), an outer ring (41), a third sealing member (44), a fourth sealing member (45) and a rolling member (43), wherein the rolling member (43) is mounted in contact between an outer peripheral surface of the inner ring (42) and an inner peripheral surface of the outer ring (41); the third sealing member (44) and the fourth sealing member (45) are both installed between the outer peripheral surface of the inner ring (42) and the inner peripheral surface of the outer ring (41); and the third sealing member (44) and the fourth sealing member (45) are located on either side of the rolling element in an axial direction of the inner ring (42).

5. A wheel assembly according to claim 4, wherein the third (44) and fourth (45) sealing members are comprised of a sealing ring or a dust cover.

6. A wheel assembly according to claim 4, wherein the outer peripheral surface of the mounting seat (1) of the rim comprises a first peripheral surface (11) and a second peripheral surface (12); wherein a diameter of the first peripheral surface (11) is larger than a diameter of the second peripheral surface (12), the first peripheral surface (11) being separated from the second peripheral surface (12) by a first shoulder (13), the first sealing member (5) being sleeved on the first peripheral surface (11), and the inner ring (42) being sleeved on the second peripheral surface (12); and the drive shaft (2) has a second shoulder (23) opposite the first shoulder (13), and the inner ring (42) is located between the first shoulder (13) and the second shoulder (23).

7. A wheel assembly according to claim 6, wherein the second shoulder (23) divides the drive shaft (2) into a first shaft section (21) and a second shaft section (22), and the second sealing member (6) is sleeved on an outer peripheral surface of the first shaft section (21); and the wheel assembly further comprises a locking piece (7), the mounting seat (1) of the rim has a second assembly hole, and the second shaft section (22) passes through the second assembly hole and is connected to the locking piece (7).

8. The wheel assembly of claim 4, wherein the first assembly hole comprises a first hole section (31) and a second hole section (32), an opening of the first hole section (31) being larger than an opening of the second hole section (32), and an inner wall surface of the first hole section (31) passing to an inner wall surface of the second hole section (32) via a third shoulder (33); and the first sealing member (5) and the outer ring (41) are both mounted in the first hole section (31), and the second sealing member (6) is mounted in the second hole section (32).

9. The wheel assembly of claim 8, wherein the inner wall surface of the first hole section (31) has an annular groove (311), and the wheel assembly further comprises a retaining ring, a portion of the retaining ring being mounted in the annular groove (311), and another portion of the retaining ring being located between the first sealing member (5) and the outer ring (41).

10. An off-road vehicle comprising the wheel assembly according to one of claims 1 to 9.

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