Inflatable sealing structure of wheel, wheel structure and vehicle with wheel structure

Abstract

The inflation sealing structure is installed between a hub and a bearing and comprises a first sealing piece and a second sealing piece, a ventilation cavity is formed between the first sealing piece and the second sealing piece, the first sealing piece is rotationally connected with the second sealing piece, the first sealing piece is provided with a first through hole, and the second sealing piece is provided with a second through hole. The first through hole is communicated with the ventilation cavity and the inside of the hub; a second through hole is formed in the second sealing piece and is communicated with the ventilation cavity and the interior of the bearing; when the first sealing piece rotates relative to the second sealing piece, the movement track of the first through hole corresponds to the orthographic projection of the ventilation cavity on the first sealing piece. When the second sealing piece rotates relative to the first sealing piece, the motion trail of the second through hole corresponds to the orthographic projection of the ventilation cavity on the second sealing piece. According to the inflation sealing structure of the wheel, the wheel structure and the vehicle with the inflation sealing structure, the purpose that tires can be inflated in the driving state or the parking state can be achieved, and occupied wheel space can be reduced.

Description

Technical Field

[0001] The present application belongs to the technical field of automobile wheel equipment, and specifically relates to an inflation sealing structure of a wheel, a wheel structure and a vehicle thereof. Background Art

[0002] Maintaining proper tire pressure not only reduces tire wear and energy consumption, but also reduces the chances of blowouts and other tire-related problems. To ensure that tire pressure remains within a normal range, an automatic tire inflation mechanism is typically connected to the wheel hub. This inflates the tire through the wheel hub, allowing for real-time adjustment of the tire pressure.

[0003] However, the existing automatic tire inflation structure can only be installed in vehicles with larger wheel hub space, such as trucks, and cannot be installed in vehicles with smaller wheel hub space, such as passenger cars, resulting in limited layout of the automatic tire inflation structure in passenger cars; and the existing automatic tire inflation structure cannot inflate the tires while driving. Utility Model Content

[0004] The purpose of the present application is to provide a wheel inflation sealing structure, a wheel structure and a vehicle thereof, which can not only achieve the purpose of inflating the tire while driving or parking, but also reduce the space occupied by the wheel.

[0005] In a first aspect, the present application discloses an air-filled sealing structure for a wheel, which is installed between the wheel hub and the bearing of the wheel, comprising: a first seal and a second seal arranged opposite to each other, a ventilation cavity being provided between the first seal and the second seal, the first seal and the second seal being rotatably connected, the first seal being provided with a first through hole, the first through hole connecting the ventilation cavity with the inside of the wheel hub along the axial direction of the wheel hub; the second seal being provided with a second through hole, the second through hole connecting the ventilation cavity with the inside of the bearing along the axial direction of the bearing; wherein, when the first seal rotates relative to the second seal, the movement trajectory of the first through hole corresponds to the orthographic projection of the ventilation cavity on the first seal; when the second seal rotates relative to the first seal, the movement trajectory of the second through hole corresponds to the orthographic projection of the ventilation cavity on the second seal.

[0006] In an exemplary embodiment of the present application, the ventilation cavity includes a first groove, the first seal includes an air inlet surface facing the second seal, and the second seal includes an air outlet surface facing the first seal; the first groove is arranged on the air inlet surface of the first seal, and the air outlet surface cover of the second seal is arranged on the opening of the first groove.

[0007] In an exemplary embodiment of the present application, the ventilation cavity includes a second groove, the second seal includes an air outlet surface facing the first seal, and the first seal includes an air inlet surface facing the second seal; the second groove is arranged on the air outlet surface of the second seal, and the air inlet surface cover of the first seal is arranged on the opening of the second groove.

[0008] In an exemplary embodiment of the present application, the ventilation cavity includes a first groove and a second groove, the second seal includes an air outlet surface facing the first seal, and the first seal includes an air inlet surface facing the second seal; the first groove is arranged on the air inlet surface of the first seal, and the second groove is arranged on the air outlet surface of the second seal, and the first groove and the second groove are arranged opposite to each other and are connected to each other.

[0009] In an exemplary embodiment of the present application, the air inlet surface of the first seal is further provided with a mounting groove, the first groove is provided at the bottom of the mounting groove and forms a stepped groove with the mounting groove; the second seal is installed in the mounting groove.

[0010] In an exemplary embodiment of the present application, the ventilation cavity is an annular cavity.

[0011] The second aspect of the present application discloses a wheel structure, including a wheel hub, a bearing and the above-mentioned inflatable sealing structure, wherein the first seal is sleeved on the wheel hub, and the second seal is connected to the outer ring of the bearing along the axial direction of the bearing.

[0012] In an exemplary embodiment of the present application, the wheel hub includes a hub body and a tire interface, the tire interface is arranged in the hub body, and the tire interface is connected to the first through hole; the bearing includes an outer ring portion and an inflation interface, the inflation interface is arranged in the outer ring portion, and the inflation interface is connected to the second through hole.

[0013] In an exemplary embodiment of the present application, the wheel structure also includes a brake disc and a steering knuckle, the brake disc is connected to the wheel hub, and the steering knuckle is connected to the bearing; wherein, the brake disc is provided with a first avoidance groove for avoiding the tire interface, and the steering knuckle is provided with a second avoidance groove for avoiding the inflation interface.

[0014] A third aspect of the present application discloses a vehicle, comprising an air source device and the wheel structure, wherein the air source device is connected to the bearing.

[0015] This application has the following beneficial effects:

[0016] In the embodiment of the present application, since the first seal or the second seal rotates with the rotation of the wheel, and the first through hole and the second through hole can be connected to the ventilation cavity at any position of the wheel rotation, therefore, when the wheel stops rotating at any position of the rotation, the first through hole and the second through hole can also be connected to the ventilation cavity. When the inflation seal structure is installed between the wheel hub and the bearing and is used to inflate the tire of the wheel, the gas filled into the bearing can always enter the wheel hub through the second through hole, the ventilation cavity and the first through hole, and enter the tire through the wheel hub to inflate the tire, so as to achieve the purpose of the inflation seal structure to inflate the tire in driving or parking state. In addition, the first seal and the second seal are both arranged between the wheel hub and the bearing, and do not occupy other layout space of the wheel, which is conducive to reducing the occupation of the wheel space, so as to facilitate the arrangement of the inflation seal structure in the wheel.

[0017] In summary, the inflation sealing structure can not only achieve the purpose of inflating the tire when driving or parking, but also reduce the space occupied by the wheel.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings are incorporated into and constitute a part of the specification, illustrate embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without inventive effort. Among them, the drawings here are used to illustrate the utility model concepts of the present application and are not completely equivalent to the structure of the actual product protected by the present application.

[0020] Figure 1 A schematic diagram of the three-dimensional structure of the wheel structure in the first embodiment of the present application is shown.

[0021] Figure 2 A schematic cross-sectional structure diagram of the wheel structure in Example 1 of the present application is shown.

[0022] Figure 3 The embodiment of the present application is shown Figure 2 Schematic diagram of the enlarged structure of the wheel structure A.

[0023] Figure 4 The embodiment of the present application is shown Figure 2 Schematic diagram of the enlarged structure of the wheel structure B.

[0024] Figure 5A schematic diagram of the three-dimensional structure of the first sealing member in the first embodiment of the present application at one viewing angle is shown.

[0025] Figure 6 A schematic diagram of the three-dimensional structure of the first sealing component in the first embodiment of the present application is shown from another perspective.

[0026] Figure 7 A front view structural schematic diagram of the first sealing component in the first embodiment of the present application is shown.

[0027] Figure 8 A schematic diagram of the three-dimensional structure of the second sealing member in the first embodiment of the present application at one viewing angle is shown.

[0028] Figure 9 A schematic diagram of the three-dimensional structure of the second sealing component in the first embodiment of the present application is shown from another perspective.

[0029] Figure 10 A front view structural schematic diagram of the second sealing component in the first embodiment of the present application is shown.

[0030] Figure 11 A partial cross-sectional structural diagram of the inflatable sealing structure in the second embodiment of the present application is shown.

[0031] Figure 12 A partial cross-sectional structural diagram of the inflatable sealing structure in Example 3 of the present application is shown.

[0032] Figure 13 A schematic diagram of the three-dimensional structure of the brake disc in the fourth embodiment of the present application is shown.

[0033] Figure 14 A schematic diagram of the three-dimensional structure of the steering knuckle in the fourth embodiment of the present application is shown at one viewing angle.

[0034] Figure 15 A schematic diagram of the three-dimensional structure of the steering knuckle in the fourth embodiment of the present application is shown from another perspective.

[0035] Description of reference numerals:

[0036] 1. Inflatable sealing structure; 101. Ventilation cavity; 101a. First groove; 101b. Second groove; 102. First through hole; 103. Second through hole; 104. Mounting groove; 105. Clamping groove; 11. First sealing member; 12. Second sealing member; 121. First sealing section; 122. Second sealing section; 2. Wheel hub; 21. Hub body; 22. Tire interface; 3. Bearing; 31. Outer ring; 32. Inflatable interface; 4. Brake disc; 401. First avoidance groove; 5. Steering knuckle; 501. Second avoidance groove; a. Air inlet surface; b. Air outlet surface. DETAILED DESCRIPTION

[0037] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be thorough and complete and will fully convey the concepts of the example embodiments to those skilled in the art.

[0038] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner.In the following description, many specific details are provided so as to provide a full understanding of the embodiments of the present application. However, it will be appreciated by those skilled in the art that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps etc. can be adopted. In other cases, known methods, devices, implementations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0039] The present application is further described below in conjunction with the accompanying drawings and specific embodiments. It should be noted that the technical features involved in the various embodiments of the present application described below can be combined with each other as long as they do not conflict with each other. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present application, and should not be understood as limiting the present application.

[0040] Example 1

[0041] like Figures 1 to 10 As shown, the first embodiment of the present invention provides an inflatable sealing structure 1 for a wheel, which is installed between the wheel hub 2 and the wheel bearing 3, and includes: a first seal 11 and a second seal 12 arranged opposite to each other, a ventilation cavity 101 is provided between the first seal 11 and the second seal 12, the first seal 11 and the second seal 12 are rotatably connected, the first seal 11 is provided with a first through hole 102, the first through hole 102 connects the ventilation cavity 101 with the inside of the wheel hub 2 along the axial direction of the wheel hub 2; the second seal 12 is provided with a second through hole 103, the second through hole 103 connects the ventilation cavity 101 with the inside of the bearing 3 along the axial direction of the bearing 3.

[0042] Furthermore, when the first seal 11 rotates relative to the second seal 12, the movement trajectory of the first through hole 102 corresponds to the orthographic projection setting of the ventilation cavity 101 on the first seal 11; when the second seal 12 rotates relative to the first seal 11, the movement trajectory of the second through hole 103 corresponds to the orthographic projection setting of the ventilation cavity 101 on the second seal 12.

[0043] In this embodiment, the first seal 11 is connected to the hub 2, and the second seal 12 is connected to the bearing 3. The first seal 11 rotates relative to the second seal 12. Of course, in other embodiments, the second seal 12 may also rotate relative to the first seal 11.

[0044] It should be understood that during driving, the first seal 11 will rotate with the rotation of the wheel hub 2. Therefore, it is necessary to ensure that when the first seal 11 rotates relative to the second seal 12, the first through hole 102 is always connected to the ventilation cavity 101 to ensure that gas can enter the first through hole 102 from the ventilation cavity 101 and inflate the tire through the wheel hub 2.

[0045] Combine Figure 3 As shown, the ventilation cavity 101 includes a first groove 101a and a second groove 101b, the second seal 12 includes an air outlet surface b facing the first seal 11, and the first seal 11 includes an air inlet surface a facing the second seal 12; the first groove 101a is arranged on the air inlet surface a of the first seal 11, and the second groove 101b is arranged on the air outlet surface b of the second seal 12, and the first groove 101a and the second groove 101b are arranged opposite to each other and are connected to each other.

[0046] In this embodiment, combined with Figure 4 as well as Figures 5 to 10 As shown, the first seal 11 and the second seal 12 are both annular structures. The first seal 11 and the second seal 12 each include an air inlet surface a and an air outlet surface b disposed opposite each other along the axial direction of the bearing 3. The air inlet surface a of the first seal 11 is connected to the air outlet surface b of the second seal 12. The air outlet surface b of the first seal 11 is connected to the wheel hub 2, and the air inlet surface a of the second seal 12 is connected to the bearing 3.

[0047] In this embodiment, the first groove 101a of the first seal 11 and the second groove 101b of the second seal 12 are arranged opposite each other and communicate with each other. The groove wall of the first groove 101a and the groove wall of the second groove 101b together form a ventilation cavity 101 for communicating with the first through hole 102 and the second through hole 103. When the first seal 11 and the second seal 12 are installed between the wheel hub 2 and the bearing 3, gas enters the second groove 101b through the second through hole 103, then enters the first groove 101a, then enters the first through hole 102, and finally enters the wheel hub 2 to inflate the tire, thereby achieving the purpose of tire inflation.

[0048] In this embodiment, since the first seal 11 or the second seal 12 rotates with the rotation of the wheel, and the first through hole 102 and the second through hole 103 can communicate with the ventilation cavity 101 at any position of the wheel rotation, the first through hole 102 and the second through hole 103 can also communicate with the ventilation cavity 101 when the wheel stops rotating at any position. When the inflation seal structure 1 is installed between the wheel hub 2 and the bearing 3 and is used to inflate the tire of the wheel, the gas filled into the bearing 3 can always enter the wheel hub 2 through the second through hole 103, the ventilation cavity 101 and the first through hole 102, and then enter the tire through the wheel hub 2 to inflate the tire, thereby achieving the purpose of the inflation seal structure 1 to inflate the tire whether the vehicle is driving or parked. In addition, the first seal 11 and the second seal 12 are both arranged between the wheel hub 2 and the bearing 3 and do not occupy other layout space of the wheel, which helps to reduce the space occupied by the wheel and facilitates the arrangement of the inflation seal structure 1 within the wheel.

[0049] In summary, the inflation sealing structure 1 can not only achieve the purpose of inflating the tire when the vehicle is driving or parked, but also reduce the space occupied by the wheel.

[0050] It should be understood that, since the inflatable sealing structure 1 is installed between the wheel hub 2 and the bearing 3 , the first seal 11 and the second seal 12 also have the function of sealing the grease in the bearing 3 to prevent the grease in the bearing 3 from leaking.

[0051] In this embodiment, combined with Figure 2 、 Figure 3 and Figure 9 As shown, the second seal 12 includes a first sealing segment 121 and a second sealing segment 122 connected to each other, with the second through-hole 103 extending through the second sealing segment 122. The air inlet surface a of the first sealing segment 121 is provided with a snap-fit groove 105 for engaging with the bearing 3, facilitating connection between the second seal 12 and the bearing 3. The second through-hole 103 is arranged obliquely relative to the second sealing segment 122, allowing the second through-hole 103 to avoid the balls of the bearing 3 and allowing gas within the bearing 3 to smoothly enter the second sealing segment 122.

[0052] Combine Figure 3 and Figure 5 As shown, the air inlet surface a of the first sealing member 11 is further provided with a mounting groove 104 , the first groove 101 a is provided at the bottom of the mounting groove 104 and forms a stepped groove with the mounting groove 104 ; the second sealing member 12 is installed in the mounting groove 104 .

[0053] In this embodiment, the first seal 11 is provided with a mounting groove 104, so that the second seal 12 can be correspondingly installed in the mounting groove 104, thereby facilitating the corresponding installation of the first seal 11 and the second seal 12. A stepped groove is formed by the first groove 101a and the mounting groove 104. The bottom of the first groove 101a and the bottom of the mounting groove 104 have a certain height difference, and the bottom of the first groove 101a is farther away from the air outlet surface b of the second seal 12 than the bottom of the mounting groove 104. The bottom of the mounting groove 104 contacts the air outlet surface b of the second seal 12 to achieve contact between the first seal 11 and the second seal 12; the bottom of the first groove 101a and the air outlet surface b of the second seal 12 are spaced apart to form the ventilation cavity 101.

[0054] It should be understood that since the first seal 11 and the second seal 12 are both annular structures, the installation groove 104 is also an annular groove, so that the second seal 12 can be installed in the installation groove 104 to achieve contact between the first seal 11 and the second seal 12.

[0055] In this embodiment, combined with Figures 3 to 10 As shown, the ventilation cavity 101 is an annular cavity, that is, the first groove 101a and the second groove 101b are both annular grooves. The setting of the annular cavity enables the inflation seal structure 1 to inflate the tire as the wheel rotates in the driving or parking state, thereby achieving the purpose of inflating the tire.

[0056] Optionally, the ventilation cavity 101 may be an elliptical cavity, a circular cavity, etc.

[0057] Preferably, the ventilation cavity 101 is an annular cavity, so that the first groove 101a of the first sealing member 11 is arranged corresponding to the second groove 101b of the second sealing member 12 during driving, so as to better inflate the tire.

[0058] It should be understood that the annular cavity can be a closed annular cavity or a truncated annular cavity. The annular cavity only needs to be able to communicate with the first through hole 102 and the second through hole 103 to ensure that the tire can be inflated when the vehicle is driving or parked.

[0059] Example 2

[0060] Combine Figures 5 to 7 as well as Figure 11 As shown, the second embodiment provides an inflatable sealing structure 1, which is substantially the same as the inflatable sealing structure 1 of the first embodiment, except that the structures of the first sealing member 11 and the second sealing member 12 of the second embodiment are different from those of the first sealing member 11 and the second sealing member 12 of the first embodiment.

[0061] In this embodiment, combined with Figure 5 、 Figure 7 and Figure 11 As shown, the ventilation cavity 101 includes a first groove 101a, the first seal 11 includes an air inlet surface a facing the second seal 12, and the second seal 12 includes an air outlet surface b facing the first seal 11; the first groove 101a is arranged on the air inlet surface a of the first seal 11, and the air outlet surface b of the second seal 12 covers the opening of the first groove 101a.

[0062] In this embodiment, the air inlet surface a of the first seal 11 is provided with a first groove 101a, and the air outlet surface b of the second seal 12 covers the opening of the first groove 101a. The groove wall of the first groove 101a and the air outlet surface b of the second seal 12 together form a ventilation cavity 101 for connecting the first through hole 102 and the second through hole 103. When the first seal 11 and the second seal 12 are installed between the wheel hub 2 and the bearing 3, air can enter the first groove 101a through the second through hole 103, then enter the first through hole 102, and finally enter the tire through the wheel hub 2, thereby inflating the tire and achieving the purpose of tire inflation.

[0063] It should be understood that since the second through hole 103 is connected to the ventilation cavity 101, the second through hole 103 needs to pass through the air inlet surface a of the second seal 12 and the air outlet surface b of the second seal 12 to ensure that the gas can pass through the second through hole 103 into the first groove 101a and then into the first through hole 102, thereby achieving the purpose of inflating the wheel.

[0064] Example 3

[0065] Combine Figures 8 to 10 as well as Figure 12 As shown, the third embodiment provides an inflatable sealing structure 1, which is substantially the same as the inflatable sealing structure 1 of the first embodiment, except that the structures of the first sealing member 11 and the second sealing member 12 of the third embodiment are different from those of the first sealing member 11 and the second sealing member 12 of the first embodiment.

[0066] In this embodiment, combined with Figure 2 、 Figure 8 and Figure 12 As shown, the ventilation cavity 101 includes a second groove 101b, the second sealing member 12 includes an air outlet surface b facing the first sealing member 11, and the first sealing member 11 includes an air inlet surface a facing the second sealing member 12; the second groove 101b is arranged on the air outlet surface b of the second sealing member 12, and the air inlet surface a of the first sealing member 11 covers the opening of the second groove 101b.

[0067] In this embodiment, the outlet surface b of the second seal 12 is provided with a second groove 101b, and the inlet surface a of the first seal 11 covers the opening of the second groove 101b. The inlet surface a of the first seal 11 and the groove wall of the second groove 101b together form a ventilation cavity 101 for connecting the first through hole 102 and the second through hole 103. When the first seal 11 and the second seal 12 are installed between the wheel hub 2 and the bearing 3, gas can enter the second groove 101b through the second through hole 103, then enter the first through hole 102, and finally enter the tire through the wheel hub 2, thereby inflating the tire and achieving the purpose of tire inflation.

[0068] It should be understood that since the first through hole 102 is connected to the ventilation cavity 101, the first through hole 102 needs to pass through the air inlet surface a of the first seal 11 and the air outlet surface b of the first seal 11 to ensure that the gas in the second groove 101b can enter the wheel hub through the first through hole 102 to achieve the purpose of inflating the tire.

[0069] Example 4

[0070] like Figure 1 and Figure 2 As shown, this fourth embodiment provides a wheel structure, including a wheel hub 2, a bearing 3 and the above-mentioned inflatable sealing structure 1, a first seal 11 is sleeved on the wheel hub 2, and a second seal 12 is connected to the outer ring of the bearing 3 along the axial direction of the bearing 3.

[0071] Combine Figure 4 As shown, the wheel hub 2 includes a hub body 21 and a tire interface 22, the tire interface 22 is arranged in the hub body 21, and the tire interface 22 is connected to the first through hole 102; the bearing 3 includes an outer ring portion 31 and an inflation interface 32, the inflation interface 32 is arranged in the outer ring portion 31, and the inflation interface 32 is connected to the second through hole 103.

[0072] In this embodiment, the inflation interface 32 is used to connect to the air source device, so that the gas can enter the second through hole 103 through the inflation interface 32, and then enter the tire interface 22 through the ventilation cavity 101 and the first through hole 102, and finally inflate the tire through the tire interface 22 to ensure that the tire pressure is maintained within a normal value range.

[0073] It should be understood that the tire interface 22 should be connected to the tire so that gas can enter the tire through the tire interface 22 to achieve the purpose of inflating the tire. The inflation interface 32 should penetrate the outer ring portion 31 so that gas can pass through the outer ring portion 31 through the inflation interface 32 and enter the second through hole 103 to achieve the purpose of inflating the tire.

[0074] Combine Figure 2 、 Figures 13 to 15As shown, the wheel structure also includes a brake disc 4 and a steering knuckle 5, the brake disc 4 is connected to the hub body 21, and the steering knuckle 5 is connected to the outer ring 31; wherein, the brake disc 4 is provided with a first avoidance groove 401 for avoiding the tire interface 22, and the steering knuckle 5 is provided with a second avoidance groove 501 for avoiding the inflation interface 32.

[0075] In this embodiment, the first avoidance groove 401 can prevent the tire interface 22 from interfering with the brake disc 4, so that the tire interface 22 can be set in the hub body 21; the second avoidance groove 501 can prevent the inflation interface 32 from interfering with the steering knuckle 5, so that the inflation interface 32 can be set in the outer ring 31.

[0076] Regarding other structures of the wheel structure, please refer to the existing technology and will not be described here in detail.

[0077] Example 5

[0078] The fifth embodiment provides a vehicle, including an air source device and the above-mentioned wheel structure, wherein the air source device is connected to the charging interface 32 .

[0079] In this embodiment, after the air source device is connected to the inflation interface 32, the gas will enter the second through hole 103 through the inflation interface 32, then enter the ventilation cavity 101, then enter the first through hole 102, then enter the tire interface 22, and finally enter the tire and inflate the tire to maintain the tire pressure within a normal value range.

[0080] Regarding other structures of the vehicle, please refer to the existing technology and will not be described here in detail.

[0081] In this application, unless otherwise specified or limited, terms such as "assembly" and "connection" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0082] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, features defined as "first" or "second" may explicitly or implicitly include one or more of the features. "Multiple" means two or more, unless otherwise clearly and specifically defined. And the descriptions of terms such as "some embodiments" and "exemplarily" mean 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 present application.

[0083] The illustrative descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art may combine and integrate different embodiments or examples described in this specification, as well as features of different embodiments or examples, unless they are mutually inconsistent.

[0084] Although the embodiments of the present application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, replace and modify the above embodiments within the scope of the present application. Therefore, any changes or modifications made in accordance with the claims and description of the present application should fall within the scope of the patent covered by this application.

Claims

1. A wheel inflation seal structure, installed between the wheel hub and the wheel bearing, characterized in that: include: A first seal and a second seal are arranged opposite to each other, a ventilation cavity is provided between the first seal and the second seal, the first seal and the second seal are rotatably connected, the first seal is provided with a first through hole, the first through hole connects the ventilation cavity with the inside of the wheel hub along the axial direction of the hub; the second seal is provided with a second through hole, the second through hole connects the ventilation cavity with the inside of the bearing along the axial direction of the bearing; wherein, When the first sealing member rotates relative to the second sealing member, the movement trajectory of the first through hole corresponds to the orthographic projection of the ventilation cavity on the first sealing member; When the second sealing member rotates relative to the first sealing member, a movement trajectory of the second through hole is arranged corresponding to the orthographic projection of the ventilation cavity on the second sealing member.

2. The inflatable sealing structure according to claim 1, characterized in that: The ventilation cavity includes a first groove, the first sealing member includes an air inlet surface facing the second sealing member, and the second sealing member includes an air outlet surface facing the first sealing member; The first groove is provided on the air inlet surface of the first sealing member, and the air outlet surface of the second sealing member is covered on the opening of the first groove.

3. The inflatable sealing structure according to claim 1, characterized in that: The vent cavity includes a second groove, the second sealing member includes an air outlet surface facing the first sealing member, and the first sealing member includes an air inlet surface facing the second sealing member; The second groove is provided on the air outlet surface of the second sealing member, and the air inlet surface of the first sealing member is covered on the opening of the second groove.

4. The inflatable sealing structure according to claim 1, characterized in that: The ventilation cavity comprises a first groove and a second groove, the second sealing member comprises an air outlet surface facing the first sealing member, and the first sealing member comprises an air inlet surface facing the second sealing member; The first groove is provided on the air inlet surface of the first sealing member, and the second groove is provided on the air outlet surface of the second sealing member. The first groove and the second groove are arranged opposite to each other and communicate with each other.

5. The inflatable sealing structure according to claim 4, characterized in that: The air inlet surface of the first sealing member is further provided with a mounting groove, the first groove is provided at the bottom of the mounting groove and forms a stepped groove with the mounting groove; The second sealing member is installed in the installation groove.

6. The inflatable sealing structure according to any one of claims 1 to 5, characterized in that: The ventilation cavity is an annular cavity.

7. A wheel structure, characterized in that: It comprises a wheel hub, a bearing and the inflatable sealing structure according to any one of claims 1 to 6, wherein the first sealing member is sleeved on the wheel hub, and the second sealing member is connected to the outer ring of the bearing along the axial direction of the bearing.

8. The wheel structure according to claim 7, characterized in that: The wheel hub comprises a hub body and a tire interface, wherein the tire interface is provided in the hub body and communicates with the first through hole; The bearing includes an outer ring portion and an air charging interface, wherein the air charging interface is provided in the outer ring portion and is communicated with the second through hole.

9. The wheel structure according to claim 8, characterized in that: The wheel structure further includes a brake disc and a steering knuckle, wherein the brake disc is connected to the wheel hub, and the steering knuckle is connected to the bearing; wherein, The brake disc is provided with a first avoidance groove for avoiding the tire interface, and the steering knuckle is provided with a second avoidance groove for avoiding the inflation interface.

10. A vehicle, characterized in that: It comprises an air source device and the wheel structure according to any one of claims 7 to 9, wherein the air source device is connected to the bearing.

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