CN-121989591-A - Wheel mounting structure for vehicle

Abstract

The present invention relates to a wheel mounting structure for a vehicle. The wheel mounting structure includes a hub having a central boss mounted at a central portion thereof and protruding in an axial direction, a wheel fitted around the central boss at an inner diameter portion of the wheel, a displacement transmitting member coupled to the central boss and selectively movable in a radially outward direction of the central boss, and a pressing ring mounted at the wheel and configured to press the wheel toward the hub by displacement of the displacement transmitting member.

Inventors

• Jin Zhugao
• Jin Enzhi
• Jin Xuanzhu
• LIU YONGSHENG
• Jin Jizhen

Assignees

• 现代自动车株式会社
• 起亚株式会社
• 瑞韩产业株式会社

Dates

Publication Date

20260508

Application Date

20250527

Priority Date

20241106

Claims (20)

1. 1. A wheel mounting structure for a vehicle, the wheel mounting structure comprising: a hub having a central boss mounted at a central portion thereof to protrude in an axial direction; a wheel fitted around the center boss at an inner diameter portion of the wheel; A displacement transmission member coupled to the central boss and selectively movable in a radially outward direction of the central boss, and A pressing ring mounted at the wheel and configured to press the wheel toward the hub by displacement of the displacement transmitting member.
2. 2. The wheel mounting structure for a vehicle according to claim 1, wherein, The displacement transmitting member includes a clamping ball inserted into a holder hole formed through the center boss in a radial direction of the center boss, The retainer holes of the center boss are formed in plurality such that the plurality of retainer holes are equally spaced along the circumferential direction of the center boss, The clamping balls are plural, so that the plural clamping balls are inserted into the corresponding retainer holes, Each cage hole includes an inclined hole surface at least a portion thereof, the inclined hole surface being inclined with respect to a radial direction of the central boss to allow the respective clamping ball to protrude from a circumferential surface of the central boss while preventing the respective clamping ball from passing through the respective cage hole.
3. 3. The wheel mounting structure for a vehicle according to claim 2, further comprising: a slider coupled to the clamping ball and mounted to be linearly slidable in an axial direction within the central boss, and A rotary drive coupled to the slider and configured to generate an axial linear displacement of the slider by a rotational force externally provided to the rotary drive.
4. 4. A wheel mounting structure for a vehicle according to claim 3, wherein the slider includes an inclined slider surface formed at a circumferential surface of the slider so that the clamping ball can be pressed in a radially outward direction of the center boss within the holder hole by an axial linear displacement of the slider relative to the center boss.
5. 5. The wheel mounting structure for a vehicle according to claim 4, wherein the inclined slider surface includes a curved surface that is non-linearly inclined with respect to an axial direction.
6. 6. The wheel mounting structure for a vehicle according to claim 3, wherein, A center cover is installed at the end of the center boss to seal the end of the center boss, The rotary drive includes a center bolt that is threadably coupled to the slider while extending through the center housing.
7. 7. The wheel mounting structure for a vehicle according to claim 6, wherein the displacement transmission member is moved in a radially outward direction of the center boss while the slider is linearly moved in the axial direction toward the wheel based on rotation of the center bolt in the first direction, the displacement transmission member being moved in the radially outward direction of the center boss pressing the pressing ring against the hub to fix the wheel to the hub.
8. 8. The wheel mounting structure for a vehicle according to claim 7, wherein the displacement transmitting member is moved in a radially inward direction of the center boss to release the pressing of the pressing ring to release the fixation of the wheel from the hub while the slider is linearly moved in the axial direction toward the hub based on the rotation of the center bolt in the second direction.
9. 9. The wheel mounting structure for a vehicle according to claim 6, wherein the slider is supported by a spring to be elastically supported against the center cover.
10. 10. The wheel mounting structure for a vehicle according to claim 9, wherein, A hub cavity for reducing the mass of the hub is formed at the hub, such that the hub cavity communicates with the interior space of the central boss, A spring seat for supporting a spring is formed between the hub cavity and the interior space of the central boss.
11. 11. The wheel mounting structure for a vehicle according to claim 10, wherein a step having a discontinuously reduced diameter is formed at the hub cavity to receive and support the spring seat thereon.
12. 12. The wheel mounting structure for a vehicle according to claim 3, wherein, A toothed structure is formed at an inner circumferential surface of the central boss of the hub to guide the sliding member to linearly move in an axial direction of the toothed structure, A structure including grooves and protrusions corresponding to the tooth-like structure of the center boss is formed at a circumferential surface of the slider, the structure including grooves and protrusions being slidably engaged to the tooth-like structure.
13. 13. The wheel mounting structure for a vehicle according to claim 2, wherein the pressure ring includes a wheel side inclined surface inclined with respect to an axial direction to convert radial displacement of the clamping ball into axial displacement based on contact of the clamping ball with the wheel side inclined surface.
14. 14. The wheel mounting structure for a vehicle according to claim 13, wherein the pressing ring is press-fitted in the wheel to be fixed to the wheel so as to press an inner diameter portion of the wheel in the axial direction.
15. 15. The wheel mounting structure for a vehicle according to claim 2, wherein, At least one stud is mounted at the hub flange of the hub, such that the at least one stud protrudes to be inserted into a hub recess of the wheel, The at least one stud includes: Stud bolts connected to the hub flange, and A stud sleeve formed in contact with the hub recess and allowing a stud bolt to extend therethrough, the stud sleeve being formed of a material different from a material of the stud bolt.
16. 16. A hub assembly for a vehicle, the hub assembly comprising: A hub flange comprising a flat surface perpendicular to the axial direction; A center boss protruding from the hub flange in an axial direction; a center cap coupled to an end of the center boss to seal the end of the center boss; a center bolt mounted to extend through the center housing; a slider screw-coupled to the center bolt and linearly slidable in the axial direction in the center boss based on rotation of the center bolt, and A clamping ball mounted in the central boss to move in a radially outward direction of the central boss by linear displacement of the slider.
17. 17. The hub assembly for a vehicle of claim 16, wherein, A cage hole is formed through the central boss to receive the clamping ball therein, while allowing the clamping ball to protrude from the central boss in a radially outward direction of the central boss, The retainer holes are formed in plurality such that the plurality of retainer holes are equally spaced along the circumferential direction of the central boss.
18. 18. The hub assembly for a vehicle of claim 17, wherein the cage hole includes an inclined hole surface at least a portion thereof, the inclined hole surface being inclined with respect to a radial direction of the central boss to allow the clamping ball to protrude from a circumferential surface of the central boss while preventing the clamping ball from passing through the cage hole.
19. 19. A hub assembly for a vehicle as claimed in claim 16, wherein a spring is mounted between the slider and the hub to resiliently support the slider against the central cover by the spring.
20. 20. A wheel for a vehicle, the wheel comprising: An inner diameter portion configured to fit around a center boss protruding in an axial direction along a rotation center portion of the hub flange to couple the wheel to a hub including the center boss, wherein the hub further includes a clamping ball mounted at a circumferential surface of the center boss to protrude from the circumferential surface of the center boss, and a stud configured to be spaced apart from the center boss while protruding from the hub flange in the axial direction; A hub groove formed at a region surrounding the inner diameter portion to receive the stud therein, and A pressing ring configured to be pressed by the clamping ball to press a region surrounding the inner diameter portion toward the hub flange.

Description

Wheel mounting structure for vehicle Technical Field The present invention relates to a technique for mounting a wheel of a vehicle to a hub. Background The vehicle is configured to transmit driving force to tires on its road surface, and therefore, the vehicle has a structure configured to mount each tire to a wheel and mount the wheel to the vehicle to mount the tire to the vehicle. The wheel is mounted to a hub of the vehicle. For stable power transmission performance and better durability of the vehicle, a firm mounting structure is required between the wheel and the hub. Conventionally, a structure for fixing a wheel to a hub using a plurality of hub bolts and a plurality of wheel nuts is widely used. This structure provides a very strong coupling and high durability. However, the wheel mounting structure using the plurality of hub bolts and the plurality of wheel nuts has disadvantages in that the time taken to replace the wheel is relatively long and the appearance of the wheel mounting structure is somewhat poor. With the recent popularity of high performance vehicles and the development of racing sports, there is a need for further shortening the time to replace the wheels and for a more aesthetically pleasing wheel appearance. The information included in the background of the invention is only for enhancement of understanding of the general background of the invention and should not be taken as an acknowledgement or any form of suggestion that this information forms the prior art that is known to a person skilled in the art. Disclosure of Invention Various aspects of the present application are directed to providing a wheel mounting structure for a vehicle configured to greatly shorten a wheel replacement time and effectively prevent theft of a wheel, while facilitating the formation of an aesthetically pleasing wheel appearance. The objects of the present invention are not limited to the above objects, and other objects of the present invention which have not been described will be more clearly understood by those skilled in the art from the following detailed description. According to an aspect of the present invention, the above and other objects can be accomplished by the provision of a wheel mounting structure for a vehicle, which includes a hub provided at a central portion with a central boss protruding in an axial direction, a wheel fitted around the central boss at an inner diameter portion of the wheel, a displacement transmitting member engaged to the central boss and selectively movable in a radially outward direction of the central boss, and a pressing ring provided at the wheel and configured to press the wheel toward the hub by displacement of the displacement transmitting member. The displacement transmitting member may include a clamping ball inserted into a holder hole formed through the center boss in a radial direction of the center boss. The retainer holes of the center boss may be formed in plurality such that the retainer holes are equally spaced along the circumferential direction of the center boss. The clamping balls may be formed in plurality such that the plurality of clamping balls are inserted into the corresponding holder holes. The cage hole may be constituted at least a portion thereof by an inclined hole surface inclined with respect to a radial direction of the center boss to allow the clamping ball to protrude from a circumferential surface of the center boss while preventing the clamping ball from passing through the cage hole. The wheel mounting structure may further include a slider provided to be linearly slidable in the axial direction within the center boss, and a rotation driving member coupled to the slider and configured to generate an axial linear displacement of the slider by a rotational force externally provided to the rotation driving member. An inclined slider surface may be formed at the circumferential surface of the slider so that the clamping ball can be pressed in the cage hole in a radially outward direction of the center boss by an axial linear displacement of the slider relative to the center boss. The inclined slider surface may comprise a curved surface that is non-linearly inclined with respect to the axial direction. A center cap may be provided at the center boss to seal an end of the center boss. The rotary driver may include a center bolt that is screw-coupled to the slider while extending through the center housing. The slider may be spring-supported to be elastically supported against the center housing. A hub cavity for reducing the mass of the hub may be formed at the hub such that the hub cavity communicates with the interior space of the central boss. A spring seat supporting a spring may be formed between the hub cavity and the interior space of the central boss. A step having a discontinuously decreasing diameter may be formed at the hub cavity to accommodate and support the spring seat. The pressure ring may be provided wit