Vehicle wheel mounting structure

Abstract

This provides a wheel mounting structure that is advantageous for creating a beautiful and sophisticated appearance and effectively prevents theft. [Solution] The invention comprises a center lock bolt that is coupled to a center boss and presses the inner diameter portion of the wheel toward the hub flange side of the wheel hub, and a latch provided to restrain the center lock bolt to the center boss, wherein the latch is installed so that the restrained state of the center lock bolt can be released by pressure applied through the center lock bolt, the latch is installed on the center boss so that rotation is restrained and linear sliding in the axial direction is permitted, and is supported relative to the wheel hub so as to be elastically supported toward the center lock bolt along the axial direction, and latch teeth are mutually formed between the latch and the center lock bolt so as to allow rotation in the direction in which the center lock bolt is fastened to the center boss and restrain rotation in the opposite direction.

Description

Technical Field

[0001] The present invention relates to a wheel mounting structure for a vehicle. More specifically, compared with the prior art, it requires only a very short time for wheel replacement, is advantageous for forming a beautiful and sophisticated appearance of the wheel, and can effectively prevent theft. The present invention relates to a wheel mounting structure for a vehicle.

Background Art

[0002] Since a vehicle transmits driving force to the road surface via tires, in order to attach tires to the vehicle, a structure is adopted in which the tires are first attached to wheels and then the wheels are attached to the vehicle. The wheel is attached to a wheel hub of the vehicle. In order to ensure stable power transmission performance and excellent durability in the vehicle, a firm mounting structure between the wheel and the wheel hub is required.

[0003] Conventionally, a structure in which a wheel is fixed to a wheel hub by a large number of hub bolts and wheel nuts has been widely used, and this structure provides very firm and stable durability. However, the structure of attaching the wheel using the large number of hub bolts and wheel nuts requires a relatively long time for wheel replacement and is also somewhat disadvantageous in terms of appearance. In recent years, due to the increase in high-performance vehicles and the development of motor sports, faster wheel replacement has been demanded, and a more beautiful and sophisticated appearance of the wheel has been demanded. Note that the matters described as the above background art are only for enhancing the understanding of the background of the present invention, and it is not recognized that they correspond to technologies well-known to those having ordinary knowledge in the relevant technical field.

Summary of the Invention

Problems to be Solved by the Invention

[0004] The present invention aims to provide a vehicle wheel mounting structure that requires significantly less time for wheel replacement compared to conventional methods, is advantageous for creating a beautiful and sophisticated appearance for the wheels, and effectively prevents theft. The technical problems that this invention aims to solve are not limited to those described above, and other technical problems not mentioned above will be clearly understood by those with ordinary skill in the art to which this invention belongs from the following description. [Means for solving the problem]

[0005] To achieve the above objective, the wheel mounting structure for a vehicle according to the present invention is: Wheel hub and, A wheel whose inner diameter portion is inserted into the center boss of the wheel hub, A center lock bolt that is connected to the center boss and presses the inner diameter portion of the wheel toward the hub flange side of the wheel hub, The invention is characterized by comprising a latch provided to restrain the center lock bolt to the center boss.

[0006] The latch may be installed such that the center lock bolt can be released from its restrained state by pressure applied through the center lock bolt.

[0007] The latch may be mounted on the center boss such that rotation is restricted and linear sliding in the axial direction is permitted, and may be supported relative to the wheel hub such that it is elastically supported toward the center lock bolt along the axial direction.

[0008] Latch teeth may be formed between the latch and the center lock bolt, allowing rotation of the center lock bolt in the direction in which it is fastened to the center boss, while restricting rotation in the opposite direction.

[0009] A spring seat is installed on the aforementioned wheel hub. A spring may be provided between the spring seat and the latch to elastically support the latch toward the center lock bolt.

[0010] The wheel hub has a hub cavity formed in it to reduce the mass of the wheel hub. The spring seat may be supported by a snap ring provided between the hub cavity and the center boss.

[0011] The wheel hub may be provided with a circlip that restrains the latch, which is elastically supported by the spring, from separating from the wheel hub.

[0012] A wedge-shaped pressing ring may be provided between the head flange of the center lock bolt and the wheel to press the wheel toward the hub flange.

[0013] The wedge-shaped cross section of the pressing ring may be formed by an inclined ring surface that is inclined in the axial direction and contacts the wheel, an inner circumferential ring surface that surrounds the center boss of the wheel hub, and a bolt-facing surface that is formed perpendicular to the axial direction so as to face the head flange of the center lock bolt.

[0014] A friction-reducing washer may be inserted between the bolt-facing surface of the pressing ring and the head flange of the center lock bolt to reduce frictional force.

[0015] The head flange facing the friction-reducing washer may be provided with at least one friction-reducing groove to reduce the contact area with the friction-reducing washer.

[0016] The head flange of the center lock bolt may be provided with a seal on its circumferential surface to create an airtight seal between it and the wheel.

[0017] On the head flange of the center lock bolt, tool insertion irregularities may be regularly formed in a circular shape in the direction toward the special tool so that a rotational force is transmitted from the special tool in a state where the special tool applies pressure to release the latch through the tool insertion hole at the center of the center lock bolt.

[0018] A center cap for sealing the tool insertion hole may be attached to the center lock bolt.

[0019] At least one stud may protrude from the hub flange of the wheel hub so as to be inserted into the wheel hub groove of the wheel.

[0020] The stud may be a stud bolt fastened to the hub flange, and a stud sleeve made of a material different from that of the stud bolt, provided so as to penetrate the stud bolt and contact the wheel hub groove.

[0021] A brake disc is provided between the wheel hub and the wheel. The diameter of the portion of the stud sleeve inserted into the wheel hub groove is formed to be larger than the diameter of the portion penetrating the brake disc, and it may be configured to press and restrain the brake disc toward the wheel hub side with the pressure applied by the stud bolt.

[0022] In addition, a wheel hub assembly of a vehicle according to the present invention for achieving the above object includes a hub flange forming a plane perpendicular to the axial direction, a center boss protruding along the axial direction from the hub flange, a center lock bolt fastened to the center boss and pressing the inner diameter portion of the wheel inserted into the center boss toward the hub flange side. It is provided within the center boss, capable of linear sliding along the axial direction and restricted from rotation, and includes a latch capable of restricting the rotation of the center lock bolt with respect to the center boss.

[0023] The hub flange is provided with at least one stud protruding in the axial direction. The latch may be configured to be able to release the restraint state of the center lock bolt by the axial pressure of a tool inserted through the center of the center lock bolt.

[0024] Furthermore, the vehicle wheel of the present invention for achieving the above object is coupled to a wheel hub including a center boss protruding axially along the rotation center of the hub flange and a stud provided so as to protrude axially from the hub flange while being spaced apart from the center boss. An inner diameter portion fitted to the center boss is provided at the rotation center. A wheel hub groove into which the stud is inserted is provided around the inner diameter portion. It is characterized in that the periphery of the inner diameter portion is formed so as to be pressed against the hub flange by a center lock bolt coupled to the center boss.

Advantages of the Invention

[0025] According to the present invention, it is possible to provide a wheel mounting structure for a vehicle that significantly reduces the wheel replacement time compared to the conventional structure, is advantageous for forming a beautiful and sophisticated appearance of the wheel, and can effectively prevent theft. Note that the effects obtained by the present invention are not limited to the above-described effects, and other effects not described above will be clearly understood by those having ordinary knowledge in the technical field to which the present invention pertains from the following description.

Brief Description of the Drawings

[0026] [Figure 1]This is a three-dimensional cross-sectional view showing a wheel mounting structure for a vehicle according to the present invention. [Figure 2] This is a cross-sectional view showing the main part of Figure 1. [Figure 3] Figure 1 is an exploded perspective view showing the main components disassembled. [Figure 4] This diagram illustrates the state in which a special tool is inserted into the main part of Figure 2. [Figure 5] Figure 2 is a cross-sectional view illustrating the internal structure of the wheel hub. [Figure 6] This is a cross-sectional view along the line F6-F6 in Figure 4. [Figure 7] This figure shows an example where latch teeth are formed between a center lock bolt and a latch. [Figure 8] This is a diagram illustrating the structure of the center lock bolt and the pressing ring. [Figure 9] This diagram illustrates a center lock bolt equipped with a friction-reducing washer. [Figure 10] This diagram illustrates a state in which the friction-reducing washer has been removed from the center lock bolt, exposing the friction-reducing groove. [Figure 11] This figure illustrates a special tool capable of fastening and releasing the center lock bolt of the present invention. [Figure 12] This diagram shows a center lock bolt. [Figure 13] This diagram illustrates the process of inserting a special tool into a center lock bolt. [Figure 14] This diagram shows the state before the special tool presses against the latch. [Figure 15] This diagram illustrates a situation in which a special tool is inserted into the center lock bolt to release the latch and apply rotational force to rotate the center lock bolt. [Figure 16] Figure 14 shows the state in which the latch restrains the rotation of the center lock bolt. [Figure 17] Figure 15 shows the state in which the latch releases the restraint on the center lock bolt. [Figure 18] This diagram illustrates the connection structure between the numerous studs on the wheel hub and the wheel. [Figure 19] This diagram illustrates a cross-section of a wheel attached to a stud. [Modes for carrying out the invention]

[0027] In describing the embodiments disclosed herein, if it is determined that a specific description of relevant known technology would obscure the gist of the embodiments disclosed herein, such detailed description will be omitted. Furthermore, the accompanying drawings are merely for the purpose of facilitating the understanding of the embodiments disclosed herein, and should be understood not as limiting the technical idea disclosed herein, but as including all modifications, equivalents, or substitutions that fall within the concept and technical scope of the present invention. Terms containing ordinal numbers, such as "first," "second," etc., can be used to describe various components, but these components are not limited by these terms. The aforementioned terms are used solely for the purpose of distinguishing one component from others. A singular expression includes plural expressions unless the context clearly indicates a different meaning.

[0028] In this specification, terms such as “includes” or “having” are intended to specify the presence of features, figures, stages, operations, components, parts, or combinations thereof as described in the specification, and should be understood not to preemptively exclude the possibility of the presence or addition of one or more other features, figures, stages, operations, components, parts, or combinations thereof. In any configuration among those described herein, any number of components or a variety of components may be included in the invention described herein. Components may include any combination of the feature parts described herein and may be arranged in any configuration among the various configurations described herein. The concepts relating not only to the structure and arrangement of the components of the present invention, but also to their use and operation, are applicable not only to the specific embodiments discussed herein, but to any number of embodiments of any combination. Embodiments including those having various feature parts in various arrangements are described below with reference to the drawings.

[0029] Hereinafter, various embodiments disclosed herein will be described in detail with reference to the accompanying drawings. Regardless of the reference numerals used in the drawings, identical or similar components are given the same reference numeral, and redundant descriptions thereof will be omitted. As shown in Figures 1 to 19, an embodiment of the wheel mounting structure for a vehicle according to the present invention comprises a wheel hub 1, a wheel 5 whose inner diameter portion 6 is inserted into the center boss 3 of the wheel hub 1, a center lock bolt 9 that is coupled to the center boss 3 and presses the inner diameter portion 6 of the wheel 5 toward the hub flange 7 side of the wheel hub 1, and a latch 11 provided so as to be able to restrain the center lock bolt 9 to the center boss 3.

[0030] In other words, the present invention ensures that when the center lock bolt 9 is connected to the center boss 3 of the wheel hub 1 while the inner diameter portion 6 formed in the center of the wheel 5 is inserted into the center boss 3 of the wheel hub 1, the wheel 5 is fixed in a state in which it can transmit power to the wheel hub 1, and this state is easily and firmly ensured by restraining the center lock bolt 9 to the wheel hub 1 by the latch 11. Therefore, according to the present invention, by releasing only the center lock bolt 9, the wheel 5 can be easily and immediately separated from the wheel hub 1, and by tightening only the center lock bolt 9, the wheel 5 can be securely fixed to the wheel hub 1. As a result, the time required to replace the wheel 5 is very short, and the wheel can be given a refined and beautiful appearance.

[0031] As shown in Figures 1 to 3, the wheel hub 1 is rotatably supported by the knuckle 13 with a wheel bearing 15. In addition to the wheel 5, a brake disc 17 is also provided on the wheel hub 1 so as to rotate together with it. A brake disc cover 19 is also shown, and the wheel hub 1 is configured to rotate by transmitting rotational force through a constant velocity joint (not shown) or the like. The latch 11 is installed such that the center lock bolt 9 can be released from its restrained state by pressure applied through the center lock bolt 9.

[0032] The latch 11 is provided on the center boss 3 such that rotation is constrained but linear axial sliding is permitted, and is supported relative to the wheel hub 1 such that it is elastically supported toward the center lock bolt 9 along the axial direction. Therefore, as illustrated in Figure 5, a serration portion 21 is machined inside the center boss 3 so that the latch 11 can slide linearly along the axial direction. Of course, as shown in Figures 16 and 17, a structure of grooves and protrusions corresponding to the serration portion 21 is formed on the circumferential surface of the latch 11, thereby ensuring stable and smooth axial linear sliding of the latch 11 inside the center boss 3.

[0033] "Axial axis" refers to the axis of rotation of wheel hub 1. A spring seat 23 is provided on the wheel hub 1, and a spring 25 is provided between the spring seat 23 and the latch 11 to elastically support the latch 11 toward the center lock bolt 9. The wheel hub 1 has a hub cavity 27 formed in it to reduce the mass of the wheel hub 1, and the spring seat 23 is supported by a snap ring 29 provided between the hub cavity 27 and the center boss 3.

[0034] Of course, if a hub cavity 27 is not formed in the wheel hub 1, the spring seat 23 and snap ring 29 may be omitted. Furthermore, the wheel hub 1 is provided with a circlip 31 that restrains the latch 11, which is elastically supported by a spring 25, so as not to separate from the wheel hub 1. Therefore, the spring 25 is constrained in the space between the spring seat 23 supported by the snap ring 29 and the latch 11 supported by the circlip 31, and the latch 11 remains elastically supported by the circlip 31 even when the center lock bolt 9 is detached from the wheel hub 1. This prevents the inconvenience of having to handle the latch 11 separately when replacing the wheel 5, and enables easy and simple wheel replacement.

[0035] Figure 5 shows that a snap ring fastening groove 33 for fastening a snap ring 29 and a circlip fastening groove 35 for fastening a circlip 31 are arranged on either side of the serrated portion 21, and a bolt tightening thread portion 37 for fastening a center lock bolt 9 is shown next to the circlip fastening groove 35. As illustrated in Figure 7, latch teeth 39 are mutually formed between the latch 11 and the center lock bolt 9, allowing rotation in the direction in which the center lock bolt 9 is fastened to the center boss 3, while restricting rotation in the opposite direction. Therefore, the center lock bolt 9 can rotate freely in the direction that fastens it to the center boss 3, but its rotation in the opposite direction is restrained by the latch teeth 39, thereby preventing the center lock bolt 9 from loosening unless the latch 11 is released.

[0036] Of course, since the latch 11 is elastically pressed against the center lock bolt 9 by the spring 25, unless the latch 11 is released with a special tool 41, the loosening of the center lock bolt 9 connected to the center boss 3 is prevented, thereby completely eliminating the possibility of the wheel 5 naturally separating from the wheel hub 1. A wedge-shaped pressing ring 45 is provided between the head flange 43 of the center lock bolt 9 and the wheel 5, which presses the wheel 5 toward the hub flange 7. Therefore, when the center lock bolt 9 is fastened to the center boss 3, the wheel 5 is not directly pressed by the center lock bolt 9, but is pressed toward the hub flange 7 by the pressure provided by the center lock bolt 9 via the pressing ring 45.

[0037] As shown in Figure 8, the wedge-shaped cross section of the pressing ring 45 is provided at an inclination in the axial direction and is formed by a ring inclined surface 47 that contacts the wheel 5, an inner ring circumferential surface 49 that surrounds the center boss 3 of the wheel hub 1, and a bolt-facing surface 51 that is formed perpendicular to the axial direction so as to face the head flange 43 of the center lock bolt 9. A friction-reducing washer 53 is inserted between the bolt-facing surface 51 of the pressing ring 45 and the head flange 43 of the center lock bolt 9 to reduce frictional force. Therefore, when the center lock bolt 9 is fastened to the center boss 3, the pressing ring 45 presses the wheel 5 toward the hub flange 7. At this time, the inclined surface 47 of the pressing ring 45 contacts the wheel 5, and the bolt-facing surface 51 contacts the friction-reducing washer 53. As a result, the relative frictional force between the inclined surface 47 and the wheel 5 is increased. Consequently, when the center lock bolt 9 rotates, no relative rotation occurs between the inclined surface 47 of the pressing ring 45 and the wheel 5. Relative rotation occurs with a relatively small frictional force between the head flange 43 of the center lock bolt 9 and the bolt-facing surface 5 of the pressing ring 45, preventing deformation or friction marks from occurring on the wheel 5, and reducing the fastening torque of the center lock bolt 9.

[0038] Furthermore, by forming at least one friction-reducing groove 55 in the head flange 43 facing the friction-reducing washer 53 to reduce the contact area with the friction-reducing washer 53, the frictional force between the pressing ring 45 and the bolt-facing surface 51 can be further reduced. In Figure 8, the pressing ring 45 is fixed to the center lock bolt 9 with a circlip 31, allowing for relative rotation but preventing detachment. Figure 9 shows the state with the pressing ring 45 removed, and a friction-reducing washer 53 provided on the head flange 43 of the center lock bolt 9. Figure 10 shows the state with the friction-reducing washer 53 removed, exposing the friction-reducing groove 55 formed on the head flange 43 of the center lock bolt 9.

[0039] On the other hand, it is preferable that the head flange 43 of the center lock bolt 9 is provided with a seal 57 on its circumferential surface so as to be able to form an airtight seal between it and the wheel 5. In other words, by providing a seal 57 between the head flange 43 and the wheel, foreign matter is prevented from entering the space between the wheel housing the pressing ring 45 and the center lock bolt 9, thereby stably maintaining the function of the structure that generates a difference in frictional force between the ring inclined surface 47 of the pressing ring 45 and the bolt-facing surface 51 as described above. On the head flange 43 of the center lock bolt 9, tool insertion grooves 61 are regularly formed in a circular shape in the direction toward the special tool 41, so that rotational force is transmitted from the special tool 41 when the special tool 41 applies pressure to release the latch 11 through the central tool insertion hole 59 of the center lock bolt 9.

[0040] The special tool 41 can have the shape shown in Figure 11, and the tool insertion grooves 61 can be formed in the shape shown in Figure 12. When the special tool 41 is brought close to the tool insertion hole 59 and the tool insertion grooves 61 of the center lock bolt 9 as shown in Figure 13, the special tool 41 goes through a state just before pressing the latch 11 as shown in Figure 14, and then, as shown in Figure 15, the special tool 41 presses the latch 11, thereby releasing the connection between the center lock bolt 9 and the latch 11. Therefore, when the special tool 41 applies pressure to release the latch 11, the special tool 41 and the center lock bolt 9 can rotate together due to the connection between the special tool 41 and the tool insertion grooves 61. Therefore, by rotating the special tool 41 in the opposite direction to the direction in which the center lock bolt 9 is fastened to the center boss 3, the center lock bolt 9 can be separated from the center boss 3.

[0041] Figure 16 shows the state in which the latch 11 is restraining the center lock bolt 9, as shown in Figure 14, before the special tool 41 presses the latch 11, and Figure 17 shows that the special tool 41 has pressed the latch 11, releasing the state in which the latch 11 was restraining the center lock bolt 9. On the other hand, the center lock bolt 9 is fitted with a center cap 63 that seals the tool insertion hole 59, preventing foreign objects from entering the center boss 3 through the tool insertion hole 59 from the outside. This ensures stable operation of the latch 11 while also allowing for a more aesthetically pleasing appearance when the wheel is mounted.

[0042] Therefore, it is preferable that a seal 57 is also provided between the center cap 63 and the center lock bolt 9. As shown in Figures 18 and 19, the hub flange 7 of the wheel hub 1 is provided with at least one protruding stud 67 into which the wheel hub groove 65 of the wheel 5 is inserted. Therefore, the torque acting between the wheel 5 and the wheel hub 1 structurally suppresses the relative rotation of the wheel 5 with respect to the wheel hub 1, thereby ensuring and maintaining a firm and stable assembly state between the wheel hub 1 and the wheel 5.

[0043] Furthermore, the wheel's appearance can be greatly improved because the studs 67 are inserted into the wheel hub grooves 65, and the relative rotation between the wheel hub 1 and the wheel 5 is structurally and firmly suppressed, while the studs 67 do not protrude or expose to the outside of the wheel 5. The stud 67 can consist of a stud bolt 69 fastened to the hub flange 7 and a stud sleeve 71 made of a different material from the stud bolt 69, through which the stud bolt 69 passes and in contact with the wheel hub groove 65. For example, the stud bolt 69 may be made of steel, and the stud sleeve 71 may be made of aluminum or an aluminum alloy.

[0044] As described above, the stud sleeve 71 made of aluminum alloy, when inserted into the wheel 5 made of the same or similar material, provides thermal expansion characteristics similar to those of the wheel 5, regardless of the heat load transmitted from the brake disc 17, thereby enabling the wheel 5 and stud 67 to maintain a firm and stable assembled state. In Figure 19, a brake disc 17 is provided between the wheel hub 1 and the wheel 5. The stud sleeve 71 is configured such that the diameter of the portion inserted into the wheel hub groove 65 is larger than the diameter of the portion that passes through the brake disc 17, and the brake disc 17 can be pressed and restrained toward the wheel hub 1 by the pressure applied by the stud bolt 69.

[0045] Therefore, even when the center lock bolt 9 is removed from the center boss 3 and the wheel 5 is separated from the wheel hub 1, the brake disc 17 can stably maintain its fixed state to the wheel hub 1 by the stud sleeve 71. On the other hand, the wheel hub assembly used in the wheel mounting structure of the present invention described above comprises a hub flange 7 that forms a plane perpendicular to the axial direction, a center boss 3 that protrudes axially from the hub flange 7, a center lock bolt 9 fastened to the center boss 3 and pressing the inner diameter portion 6 of the wheel inserted into the center boss 3 toward the hub flange 7, and a latch 11 provided inside the center boss 3 that is capable of linear sliding along the axial direction but is rotationally restricted, and can restrict the rotation of the center lock bolt 9 relative to the center boss 3.

[0046] The hub flange 7 is provided with at least one stud 67 that protrudes in the axial direction, and the latch 11 is configured to release the restraint of the center lock bolt 9 by the axial pressure of a tool inserted through the center of the center lock bolt 9. On the other hand, the vehicle wheel used in the wheel mounting structure of the present invention as described above has an inner diameter portion 6 that fits into the center boss 3 at the center of rotation so as to be coupled to a wheel hub 1 which includes a center boss 3 that protrudes axially from the rotation center of the hub flange 7 and a stud 67 that is spaced apart from the center boss 3 and protrudes axially from the hub flange 7. A wheel hub groove 65 into which the stud 67 is inserted is provided around the inner diameter portion 6, and the area around the inner diameter portion 6 is formed so as to be pressed toward the hub flange 7 by a center lock bolt 9 that is coupled to the center boss 3. Although specific embodiments of the present invention have been illustrated and described, it will be apparent to those ordinary skill in the art that the present invention can be improved and modified in various ways without departing from the technical spirit of the invention provided by the following claims. [Explanation of symbols]

[0047] 1 Wheel Hub 3 Center Boss 5 wheels 6. Inner diameter 7 Hub flange 9 Center lock bolts 11 Latch 13 Knuckle 15 Wheel bearings 17 Brake Disc 19 Brake Disc Cover 21 Serration section 23 Spring Seat 25 Springs 27 Hub Cavity 29 snap rings 31 Circlips 33 Snap ring fastening groove 35 Circlip fastening groove 37 Bolt tightening thread section 39 Latch teeth 41 Special tools 43 Head flange 45 Compression Ring 47 Ring Inclined Surface 49 Inner surface of the ring 51 Bolt opposing surface 53 Friction-reducing washers 55 friction-reducing grooves 57 stickers 59 Tool insertion holes 61 Tool insertion grooves 63 Center cap 65 Wheel hub grooves 67 studs 69 Stud bolts 71 Stud Sleeves

Claims

1. Wheel hub and, A wheel whose inner diameter portion is inserted into the center boss of the wheel hub, A center lock bolt that is connected to the center boss and presses the inner diameter portion of the wheel toward the hub flange side of the wheel hub, A wheel mounting structure for a vehicle, characterized by comprising a latch provided to restrain the center lock bolt to the center boss.

2. The wheel mounting structure for a vehicle according to claim 1, characterized in that the latch is installed such that the center lock bolt can be released from its restrained state by pressure applied through the center lock bolt.

3. The wheel mounting structure for a vehicle according to claim 2, characterized in that the latch is installed on the center boss such that rotation is restricted and linear sliding in the axial direction is permitted, and is supported relative to the wheel hub such that it is elastically supported toward the center lock bolt along the axial direction.

4. The wheel mounting structure for a vehicle according to claim 3, characterized in that latch teeth are mutually formed between the latch and the center lock bolt, allowing rotation of the center lock bolt in the direction in which it is fastened to the center boss, while restricting rotation in the opposite direction.

5. A spring seat is installed on the aforementioned wheel hub. The wheel mounting structure for a vehicle according to claim 3, characterized in that a spring is provided between the spring seat and the latch to elastically support the latch toward the center lock bolt.

6. The wheel hub has a hub cavity formed in it to reduce the mass of the wheel hub. The wheel mounting structure for a vehicle according to claim 5, characterized in that the spring seat is supported by a snap ring provided between the hub cavity and the center boss.

7. The wheel mounting structure for a vehicle according to claim 6, characterized in that the wheel hub is provided with a circlip that restrains the latch, which is elastically supported by the spring, from separating from the wheel hub.

8. A serration portion is formed on the inner circumferential surface of the center boss to guide the axial linear movement of the latch. The wheel hub is formed with a snap ring fastening groove for fastening the snap ring and a circlip fastening groove for fastening the circlip, The wheel mounting structure for a vehicle according to claim 7, characterized in that the snap ring fastening groove and the circlip fastening groove are arranged with the serrated portion in between.

9. A serration portion is formed on the inner circumferential surface of the center boss to guide the axial linear movement of the latch. The wheel mounting structure for a vehicle according to claim 3, characterized in that grooves and protrusions corresponding to the serrations of the center boss are formed on the circumferential surface of the latch.

10. A wedge-shaped pressing ring is provided between the head flange of the center lock bolt and the wheel, which presses the wheel toward the hub flange. The wedge-shaped cross section of the pressing ring is formed to be inclined in the axial direction and is characterized by being formed by a ring inclined surface that contacts the wheel, an inner circumferential surface of the ring that surrounds the center boss of the wheel hub, and a bolt-facing surface that is formed perpendicular to the axial direction so as to face the head flange of the center lock bolt, as described in claim 2.

11. The wheel mounting structure for a vehicle according to claim 10, characterized in that a friction-reducing washer is inserted between the bolt-facing surface of the pressing ring and the head flange of the center lock bolt to reduce frictional force.

12. The wheel mounting structure for a vehicle according to claim 11, characterized in that the head flange facing the friction-reducing washer is provided with at least one friction-reducing groove for reducing the area in contact with the friction-reducing washer.

13. The wheel mounting structure for a vehicle according to claim 10, characterized in that the head flange of the center lock bolt is provided with a seal on its circumferential surface so as to be able to form an airtight seal between it and the wheel.

14. The wheel mounting structure for a vehicle according to claim 10, characterized in that tool insertion grooves are regularly formed in a circular pattern on the head flange of the center lock bolt so that a rotational force is transmitted from the special tool when the special tool applies pressure to release the latch through the tool insertion hole in the center of the center lock bolt.

15. The wheel mounting structure for a vehicle according to claim 14, characterized in that a center cap that seals the tool insertion hole is attached to the center lock bolt.

16. The special tool and the center lock bolt are rotatably mounted together by the coupling between the special tool and the tool insertion grooves, while the special tool applies pressure to release the latch. The wheel mounting structure for a vehicle according to claim 14, characterized in that the center lock bolt is separated from the center boss by rotating the special tool in the opposite direction to the direction in which the center lock bolt is fastened to the center boss.

17. At least one stud is provided protruding from the hub flange of the wheel hub so as to be inserted into the wheel hub groove of the wheel. The aforementioned stud is Stud bolts fastened to the hub flange, The stud bolt is provided to pass through and contact the wheel hub groove, and is composed of a stud sleeve made of a different material from the stud bolt, A brake disc is provided between the wheel hub and the wheel. The wheel mounting structure for a vehicle according to claim 2, characterized in that the stud sleeve is formed such that the diameter of the portion inserted into the wheel hub groove is larger than the diameter of the portion that penetrates the brake disc, and the pressure applied by the stud bolt can press and restrain the brake disc toward the wheel hub.

18. A hub flange that forms a plane perpendicular to the axial direction, A center boss protruding from the hub flange along the axial direction, A center lock bolt fastened to the center boss presses the inner diameter portion of the wheel inserted into the center boss toward the hub flange side, A wheel hub assembly for a vehicle, comprising a latch provided within the center boss, which is capable of linear sliding along the axial direction and whose rotation is constrained, thereby constraining the rotation of the center lock bolt relative to the center boss.

19. The hub flange is provided with at least one stud that protrudes in the axial direction. The wheel hub assembly for a vehicle according to claim 18, characterized in that the latch is configured such that the center lock bolt can be released from its restrained state by the axial pressure of a tool inserted through the center of the center lock bolt.

20. An inner diameter portion is provided at the center of rotation that fits into the center boss, so as to be coupled to a wheel hub which includes a center boss projecting axially from the center of rotation of the hub flange and a stud projecting axially from the hub flange spaced apart from the center boss. The periphery of the inner diameter portion is provided with a wheel hub groove into which the stud is inserted. A vehicle wheel characterized in that the area around the inner diameter portion is formed so as to be pressed toward the hub flange by a center lock bolt connected to the center boss.

Images