JP7136759B2 - vehicle wheel - Google Patents

Description

The present disclosure relates to vehicle wheels with air valves.

Vehicle wheels have a normal rim structure in which a well (drop well) recessed in the outer peripheral surface of the rim is placed outside (the outer surface side of the wheel) with respect to the center in the width direction of the rim, and There is a reverse rim structure that is arranged inward with respect to the center of the A wheel having a normal rim structure is sometimes provided with a thick portion on the outer portion of the well (see, for example, Patent Document 1). In a wheel having a thick portion on the outer side of the rim, the air valve, which is mounted on the wheel so as to pass through the rim, must be received in the valve mounting hole formed in the thick portion. (see FIG. 1 of Patent Document 1).

Japanese Patent No. 3387927

On the other hand, in the case of a wheel with a reverse rim structure, an air valve must be attached to the thin portion of the rim because the outer portion of the rim is usually not provided with a thick portion. Here, a valve seal made of an elastic member is used at the portion where the air valve is attached to the rim in order to ensure sealing performance. Therefore, when the air valve is subjected to centrifugal force during running, stepping stones, external force from an air chuck when injecting air, etc., the air valve collapses with elastic deformation of the mounting portion. When the air valve is attached to the thin portion of the rim as described above, the tilting of the air valve is not restricted by the valve mounting hole, and the tilting may reduce the sealing performance of the air valve.

SUMMARY OF THE INVENTION In view of such a background, it is an object of the present invention to provide a vehicle wheel capable of suppressing tilting of an air valve when a load is applied, and suppressing deterioration of sealing performance of the air valve.

In order to solve such a problem, an embodiment of the present invention provides a disk (4) which has a disk shape centered on the axle (X) and is to be attached to the hub, and a , a wheel body (2) comprising a cylindrical rim (5) on which a tire is to be mounted, and an air valve (20) mounted on the inner peripheral surface (5a) of the rim so as to pass through the rim. In the vehicle wheel (1), the air valve includes an attachment portion (21) attached to the rim and a cylindrical valve body portion (22) extending outward from the wheel body from the attachment portion (21). ) and a protrusion (24) protruding from the valve body portion to the outside in the radial direction of the wheel body and facing the rim at a predetermined distance (g).

According to this configuration, since the valve main body is provided with the projection facing the rim at a predetermined distance, the air valve collapses when the air valve receives a load radially outward of the wheel main body. is suppressed. Therefore, deterioration of the sealing performance of the air valve due to the radially outward load is suppressed.

Preferably, a protrusion (25) protruding radially inward of the wheel body in the circumferential direction is formed at a portion of the inner peripheral surface of the rim facing the protrusion, and the tip of the protrusion (25) is formed with the protrusion. A recess (26) is formed to receive at least part of the portion (4) in a contactless manner.

According to this configuration, since at least a part of the protrusion is received in the recess, even when the air valve receives a load in the circumferential direction, the tilting of the air valve (tilting in the circumferential direction) is suppressed. . Therefore, the deterioration of the sealing performance of the air valve due to the load in the circumferential direction is suppressed.

Preferably, the bottom surface (26a) of the recess is located radially inward with respect to the inner peripheral surface (5a) of the rim.

According to this configuration, the height of the protrusion is reduced and the inertial mass of the protrusion is reduced compared to the case where the bottom surface of the recess coincides with the inner peripheral surface of the rim. Therefore, tilting of the air valve due to the centrifugal force of the valve body is suppressed.

Preferably, said distance (g) between said recess and said protrusion is substantially constant in the direction of said axle.

According to this configuration, when the air valve is tilted radially outward or in the circumferential direction of the wheel body, the projecting portion comes into contact with the projecting portion in a form close to line contact or surface contact. Therefore, the contact load of the air valve is dispersed, and damage to the protrusions and projections is suppressed.

Preferably, the convex portion has a shape that widens in the circumferential direction toward the radially outer side.

According to this configuration, since the rigidity of the convex portion against the circumferential load is high, when a circumferential load is applied to the valve main body, such as when air is injected, when air pressure is adjusted, or when a flying stone hits, the convex portion is It is suppressed that the part is damaged. Moreover, deterioration of the aerodynamic characteristics due to the convex portion is suppressed.

Preferably, the convex portion (25) is provided outside the inner surface (4a) of the disc.

According to this configuration, since the convex portion does not interfere with cutting of the inner surface of the disc, it is possible to suppress an increase in the manufacturing cost of the wheel body.

Preferably, in the wheel body (2), a well (17) recessed in the outer peripheral surface of the rim is arranged inside the wheel body with respect to the center line (CL) in the width direction of the rim. It has a reverse rim structure, and the valve body (22) forms an angle (θ) with respect to the mounting portion (21).

According to this configuration, since the wheel body has the reverse rim structure, the wheel body can be made to appear larger when viewed from the outer surface side. Also, even if the wheel body has a reverse rim structure, since the valve body forms an angle with respect to the mounting part, the tip of the valve body can be placed near the outer surface of the wheel body at a position close to the rim. can. As a result, the appearance of the vehicle wheel can be improved while ensuring the ease of air injection and air pressure adjustment.

Preferably, an annular hump (14) bulging radially outward is formed at a position adjacent to the outer flange on the outer peripheral surface of the rim, and the mounting portion (21) is attached to the hump. and positioned radially inward of the outer peripheral edge of the hump.

According to this configuration, it is possible to prevent the mounting portion of the air valve from becoming an obstacle during mounting and dismounting of the tire.

Thus, according to the present invention, it is possible to provide a vehicle wheel capable of suppressing tilting of the air valve when a load is applied, and suppressing deterioration of the sealing performance of the air valve.

1 is a front view of a vehicle wheel according to an embodiment; II-II sectional view in Fig. 1 Enlarged perspective view around the air valve Enlarged sectional view of part IV in Fig. 2 VV sectional view in FIG. FIG. 5 is an enlarged cross-sectional view of a main part of the vehicle wheel corresponding to FIG. 4 with the air valve removed;

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. In the following description, the design surface of the vehicle wheel 1 (that is, the outer surface in the width direction of the vehicle) is referred to as the front, the front side of the vehicle wheel 1 is referred to as the outer side or the outer side, and the rear side of the vehicle wheel 1 is referred to as the outer side. It is called inside or inside.

As shown in FIGS. 1 and 2, a vehicle wheel 1 has a cylindrical wheel body 2 that holds a tire. The wheel body 2 is a one-piece wheel made of light metal such as an aluminum alloy or a magnesium alloy, and is manufactured by an appropriate manufacturing method including molding processes such as casting and forging.

The wheel body 2 comprises a disk 4 to be attached to a hub 3 (see FIG. 2) that rotates around an axle X, and a cylindrical rim 5 to which a tire (not shown) is attached, integrally provided on the outer periphery of the disk 4. It has The disk 4 has a ring-shaped hub attachment portion 7 with a hub hole 6 formed in the center. A plurality of (five in this embodiment) bolt holes 8 are formed around the hub hole 6 of the hub mounting portion 7 . The wheel body 2 is fastened to the hub 3 by a plurality of bolts inserted through the bolt holes 8 so as to be rotatable around the axle X. As shown in FIG.

The disc 4 also has a plurality of spokes 9 radially extending from the outer peripheral portion of the hub mounting portion 7 . The radially outer end of each spoke 9 is joined to the inner circumference of the rim 5 . That is, the disc 4 has a disc shape centered on the axle X, and the rim 5 is provided on the outer periphery of the disc 4 . The plurality of spokes 9 may have the same shape or different shapes. Also, the plurality of spokes 9 may have a straight shape, a curved shape, a twisted shape, or the like. In this embodiment, five spokes 9 having the same shape are arranged at regular intervals in the circumferential direction. The disc 4 has a rotationally symmetrical design with each bolt hole 8 located between two spokes 9 and each spoke 9 extending close to the hub hole 6 of the hub mounting portion 7 .

As shown in FIG. 2, the rim 5 has an outer flange 11 formed at its outer end so as to extend radially outward and a flange 11 formed at its inner end so as to extend radially outwardly. It has an inner flange 12 formed on it. An outer bead seat 13 that supports the outer bead portion of the tubeless tire is formed inside the outer flange 11, and an annular outer hump 14 that protrudes radially outward is formed inside the outer bead seat 13. It is An inner bead seat 15 that supports the inner bead portion of the tubeless tire is formed outside the inner flange 12, and an annular inner hump 16 that protrudes radially outward is formed outside the inner bead seat 15. It is

Between the outer hump 14 and the inner hump 16, a well 17 (drop well) recessed in the outer peripheral surface is formed. The well 17 is an annular portion having the smallest outer diameter in the cylindrical rim 5 and is formed adjacent to the inner hump 16 . That is, the wheel body 2 has a reverse rim structure in which the well 17 recessed in the outer peripheral surface of the rim 5 is arranged inside the wheel body 2 with respect to the center line CL in the width direction of the rim 5 . . Since the wheel body 2 has a reverse rim structure and the well 17 is positioned on the far side, the diameter of the rim 5 appears large when the wheel body 2 is viewed from the outside, making the wheel body 2 look large. can.

A valve mounting hole 18 penetrating through the rim 5 is formed between a pair of spokes 9 adjacent to each other on the rim 5 . The valve mounting hole 18 is located inside the outer hump 14 at a position close to the outer hump 14 . An air valve 20 for injecting air into the tire is attached to the valve attachment hole 18 . The air valve 20 is attached to the inner peripheral surface 5a of the rim 5 via the valve attachment hole 18. As shown in FIG.

The air valve 20 has a mounting portion 21 mounted in the valve mounting hole 18 so as to pass through the rim 5, and a cylindrical valve body portion 22 extending outward from the wheel body 2 from the mounting portion 21. ing. The mounting portion 21 includes a sealing member made of an elastic material represented by rubber, and is mounted to the rim 5 so as to be elastically displaceable so as to be in airtight contact with the valve mounting hole 18 . The mounting portion 21 is arranged inside the outer hump 14 and radially inside the outer peripheral edge of the hump. The valve main body portion 22 is made of a metal hollow pipe, and its proximal end is supported by the mounting portion 21 . A valve core forming a check valve is attached to the tip of the valve body 22, and a valve cap 23 (see FIG. 3) is detachably attached.

Since the wheel body 2 has a reverse rim structure, the mounting and demounting of the tire on the wheel body 2 is performed on the inner side of the wheel body 2 . Specifically, the tire is attached to and detached from the well 17 of the rim 5 through an inclined posture in which a portion of the inner edge is engaged with the well 17 and the other portion of the inner edge is located inside the inner flange 12 . Attaching and detaching the tire to the outer bead sheet 13 and the inner bead sheet 15 is performed in a state in which the tie is fitted to the well 17 over the entire circumference. At this time, as described above, the mounting portion 21 of the air valve 20 is arranged inside the outer hump 14 and positioned radially inside the outer peripheral edge of the outer hump 14. In addition, the attachment portion 21 is prevented from becoming an obstacle during detachment.

As shown in FIGS. 3 and 4, the portion of the rim 5 defining the valve mounting hole 18 expands outward, and the axis of the valve mounting hole 18 extends radially inward. slightly sloping to A mounting portion 21 of the air valve 20 is mounted on the rim 5 coaxially with the valve mounting hole 18 and positioned inside the outer hump 14 . The valve body portion 22 is slanted radially inward and outward at a larger angle of inclination than the axis of the mounting portion 21 . That is, the air valve 20 has a substantially L-shape in which the valve body 22 forms an angle θ with respect to the mounting portion 21 . The angle θ is set to a value smaller than 90°.

Since the valve body portion 22 forms an angle θ with respect to the mounting portion 21 in this way, even if the wheel body 2 has a reverse rim structure, the tip of the valve body portion 22 can be positioned close to the rim 5 so that the wheel body can be mounted on the wheel body. 2 can be placed near the outer surface. With such a configuration, it is possible to improve the appearance of the vehicle wheel 1 while ensuring the ease of air injection and air pressure adjustment.

The valve body portion 22 has an axial length that is longer than the axial length of the mounting portion 21 . The tip of the valve main body portion 22 is located outside the outer hump 14 and inside the outer end surface of the outer flange 11 at a position aligned with the outer bead seat 13 in the inside-outside direction. The axis of the valve body 22 intersects the axis of the mounting portion 21 at a position near the valve mounting hole 18 . Therefore, even if force is applied to the valve body 22 in the axial direction, only a small moment is generated in the mounting portion 21 .

On the other hand, since the mounting portion 21 is attached to the rim 5 via the sealing member so as to be elastically displaceable, when force is applied to the valve body portion 22 in its radial direction, the valve body portion 22 is displaced in the direction of the force. obtain. Therefore, the valve main body 22 is integrally formed with a protrusion 24 that protrudes radially outward from the wheel main body 2 from the outer surface thereof. The protrusion 24 has a width smaller than the diameter of the valve body 22 and a length shorter than the axial length of the valve body 22 . The protrusion 24 has a tapered shape in which the height from the outer surface of the valve body 22 increases toward the outer side, and the end face in the height direction (the radial direction of the wheel body 2 ) is at the inner peripheral surface 5 a of the rim 5 . It is substantially parallel to the portion where the outer hump 14 is provided.

FIG. 5 is a cross-sectional view taken along line VV in FIG. As shown in FIGS. 3 to 5, a protrusion 25 protruding radially inward of the wheel body 2 in the circumferential direction is integrally formed at a portion of the inner peripheral surface 5a of the rim 5 facing the protrusion 24. there is The convex portion 25 has a shape that widens in the circumferential direction toward the radially outer side, and a concave portion 26 that receives at least a portion of the projection portion 24 is formed at the tip of the convex portion 25 . The bottom surface 26a of the recessed portion 26 is located radially inwardly of the inner peripheral surface 5a of the rim 5, and faces the end surface of the protrusion 24 in the height direction with a predetermined gap g (FIG. 4). is doing. The width (width in the circumferential direction) of the recess 26 is larger than the width of the protrusion 24 , and the protrusion 24 is arranged at the center of the recess 26 in the width direction. Therefore, the pair of side surfaces 26b of the recess 26 face the corresponding circumferential side surfaces of the protrusion 24 in a non-contact state.

The protruding portion 24 protruding from the valve main body portion 22 in this manner faces the rim 5 at a predetermined distance g at the portion where the protruding portion 25 is provided. Therefore, when the air valve 20 receives a load radially outward of the wheel body 2 , the tilting of the air valve 20 radially outward of the wheel body 2 is suppressed. This suppresses deterioration of the sealing performance of the air valve 20 due to the radially outward load.

Further, since at least a part of the protrusion 24 is received in the recess 26 in a non-contact state, even when the air valve 20 receives a load in the circumferential direction of the wheel body 2, the air valve 20 does not fall (the wheel body 2) is suppressed. Therefore, deterioration of the sealing performance of the air valve 20 due to the load in the circumferential direction of the wheel body 2 is suppressed.

As described above, the bottom surface 26a of the recess 26 is positioned radially inward with respect to the inner peripheral surface 5a of the rim 5. As shown in FIG. That is, the bottom surface 26a of the recess 26 is provided on the projection 24 side in a relationship in which the protrusion 24 and the rim 5 face each other with a predetermined gap g therebetween. The height of the protrusion 24 is smaller than when it coincides with the surface 5a. As a result, the inertial mass of the protrusion 24 is reduced, and tilting of the air valve 20 due to the centrifugal force of the valve main body 22 is suppressed.

As shown in FIG. 4, the distance g between the bottom surface 26a of the recess 26 and the end surface of the protrusion 24 in the height direction is substantially constant in the direction of the axle X. As shown in FIG. As shown in FIGS. 3 and 5, the distance g between the pair of side surfaces 26b of the recess 26 and the corresponding side surfaces of the protrusion 24 is also substantially constant in the direction of the axle X. As shown in FIGS. In this embodiment, the distance g between the bottom surface 26a of the recess 26 and the projection 24 and the distance g between the side surface 26b of the recess 26 and the projection 24 are substantially the same. In other embodiments, the distance g between the bottom surface 26a of the recess 26 and the protrusion 24 may be greater than the distance g between the side surface 26b and the protrusion 24. FIG.

Since the distance g between the recessed portion 26 and the projecting portion 24 is substantially constant in the direction of the axle X in this way, when the air valve 20 is tilted radially outward or in the circumferential direction of the wheel body 2, line contact or surface contact is prevented. The projecting portion 24 contacts the projecting portion 25 in a form close to contact. Therefore, the contact load of the air valve 20 is distributed, and damage to the protrusions 24 and the protrusions 25 is suppressed.

Further, as described above, the projection 25 has a shape that widens in the circumferential direction toward the radially outer side, and the rigidity of the projection 25 against the load in the circumferential direction is high. Therefore, when a load in the circumferential direction is applied to the valve main body 22, such as when air is injected, when air pressure is adjusted, or when a flying stone collides, damage to the convex portion 25 is suppressed. Further, the aerodynamic performance of the rim 5 may deteriorate due to the formation of the protrusions 25 on the rim 5 . However, since the convex portion 25 has a gentle shape that widens toward the end in the circumferential direction, the deterioration of the aerodynamic characteristics due to the convex portion 25 is suppressed.

FIG. 6 is an enlarged cross-sectional view of the vehicle wheel 1 corresponding to FIG. 4 with the air valve 20 removed. As shown in FIG. 6 , the protrusions 25 are provided outside the inner surface 4 a of the disc 4 , more specifically, the inner surface 4 a of the spokes 9 . Therefore, the protrusions 25 do not interfere with cutting of the inner surface 4a of the disc 4. As shown in FIG. As a result, compared to the case where the convex portion 25 is provided so as to protrude inward from the inner surface 4a of the disk 4, processing becomes easier, and an increase in the manufacturing cost of the wheel body 2 is suppressed.

Although the specific embodiments have been described above, the present invention is not limited to the above embodiments and can be widely modified. For example, in the above embodiment, the wheel body 2 is a one-piece wheel, but it may be a two-piece or three-piece wheel. Further, the wheel body 2 may be manufactured by a manufacturing method including press molding in the molding process. In addition, the specific configuration, arrangement, quantity, material, etc. of each member and portion can be changed as appropriate without departing from the scope of the present invention. Further, the above embodiments can be combined as appropriate. On the other hand, not all of the components shown in the above embodiments are essential, and can be selected as appropriate.

1 Vehicle Wheel 2 Wheel Body 3 Hub 4 Disc 4a Inner Surface 5 Rim 5a Inner Peripheral Surface 11 Outer Flange 13 Outer Bead Seat 14 Outer Hump 17 Well 20 Air Valve 21 Mounting Portion 22 Valve Body 24 Projection 25 Protrusion 26 Recess 26a Bottom CL Center line in width direction of rim 5 X Axle θ Angle

Claims (7)

A wheel body having a disc shape centered on an axle and having a disc to be attached to a hub, and a cylindrical rim provided on the outer periphery of the disc and to which a tire is to be attached;
and an air valve mounted on the inner peripheral surface of the rim so as to penetrate the rim,
The air valve includes a mounting portion attached to the rim, a cylindrical valve body portion extending outward from the wheel body from the mounting portion, and a valve body extending radially outward of the wheel body from the valve body portion. a protrusion that protrudes and faces the rim at a predetermined distance ;
A protrusion projecting radially inward of the wheel body in the circumferential direction is formed on a portion of the inner peripheral surface of the rim facing the protrusion,
The vehicle wheel , wherein the convex portion is provided outside the inner surface of the disc . 2. The vehicle wheel according to claim 1, wherein a recess is formed at the tip of the protrusion for receiving at least part of the projection in a non-contact state. 3. The vehicle wheel according to claim 2, wherein a bottom surface of said recess is positioned radially inward with respect to said inner peripheral surface of said rim. 4. The vehicle wheel according to claim 2, wherein the distance between the recess and the protrusion is substantially constant in the direction of the axle. The vehicle wheel according to any one of claims 2 to 4, wherein the convex portion has a shape that widens in the circumferential direction toward the radially outer side. The wheel body has a reverse rim structure in which a well recessed in the outer peripheral surface of the rim is arranged inward of the wheel body with respect to the center line in the width direction of the rim,
A valve mounting hole for mounting the air valve is formed in the rim, and an axis of the valve mounting hole is inclined outward toward the radially inner side of the wheel body,
The mounting portion is mounted on the rim coaxially with the axis of the valve mounting hole,
The valve body portion is inclined outward toward the radially inner side of the wheel body with a larger angle of inclination than the mounting portion, and the angle of the valve body portion with respect to the mounting portion is less than 90°. The vehicle wheel according to any one of claims 1 to 5 , characterized in that: An annular hump bulging radially outward is formed at a position adjacent to the outer flange on the outer peripheral surface of the rim,
7. The vehicle wheel according to claim 6 , wherein the mounting portion is arranged inwardly of the hump and positioned radially inward of an outer peripheral edge of the hump.

Images