JP2009262642A - Wheel for vehicle - Google Patents

Abstract

An object of the present invention is to provide a vehicle wheel that realizes lighter weight and improved rigidity more effectively.
A vehicle wheel having a spoke and a rim, wherein the spoke extends from a wheel disc center of the vehicle wheel to an inner peripheral surface of the rim, and further, an outer rim portion of the rim. And extending along the inner rim portion as a reinforcing beam having a thicker cross section than the rim.
[Selection] Figure 2

Description

  The present invention relates to a vehicle wheel.

  Conventionally, vehicle wheels used in vehicles such as automobiles have various materials and structures, and aluminum wheels are known as typical ones. This is for reducing the weight of the vehicle and improving the appearance design.

  Various inventions have been made for such vehicle wheels for the purpose of reducing the weight and improving the rigidity of the vehicle wheel.

For example, in Patent Document 1, a spoke extending radially from the center of rotation of a wheel disk of a vehicle wheel radiates from a boss of the wheel disk as a so-called overhead state in which a front portion of a tire support rim can be covered from the front. An automotive wheel configured to be a plurality of symmetrically extended spokes is disclosed. Further, in Patent Document 2, in a wheel in which a residual core made of a metal material is provided in at least one hollow chamber, the core is formed by a wheel rim and a wheel rim star in the region of the wheel rim ear of the wheel. Disclosed is a wheel provided in an annular chamber that is open toward one of the formed sides.
JP 2001-47804 A Special table 2003-502198 gazette

  However, even in the vehicle wheel according to the above prior art, in order to improve its rigidity, it is necessary to increase the cross-sectional area uniformly in the circumferential direction of the vehicle wheel, resulting in a problem that the weight increases. there were.

  The present invention has been invented in order to solve this problem in view of the above points, and an object of the present invention is to provide a vehicle wheel that realizes weight reduction and rigidity improvement more effectively.

  In order to achieve the above object, a vehicle wheel according to the present invention is a vehicle wheel having a spoke and a rim, and the spoke extends from the center of the wheel disk of the vehicle wheel to the inner periphery of the rim. Further, it can be configured to extend from the outer rim portion of the rim along the inner rim portion as a reinforcing beam having a thicker cross section than the rim.

  In order to achieve the above object, the reinforcing beam in the present invention is formed by being bonded to an axle side surface or a tire side surface of the rim, or formed integrally with the rim. Can be configured.

  Moreover, in order to achieve said objective, the said rim | limb in this invention can be comprised so that it may coat | cover with a resin raw material.

  In order to achieve the above object, the reinforcing beam in the present invention can be configured such that the cross section of the reinforcing beam becomes narrower from the outer rim portion of the rim toward the inner rim portion. .

  ADVANTAGE OF THE INVENTION According to this invention, the wheel for vehicles which implement | achieves weight reduction and the improvement of rigidity more effectively can be provided.

  The best mode for carrying out the present invention will be described below with reference to the drawings.

[First Embodiment]
(Example of vehicle wheel)
FIG. 1 is a schematic perspective view of a vehicle wheel according to the first embodiment. FIG. 2 is a schematic cross-sectional view of the vehicle wheel in the first embodiment. FIG. 3 is an example of a schematic cross-sectional view taken along the line AA ′ in FIG.

  A vehicle wheel 1 shown in FIG. 1 has a configuration having a cylindrical rim (rim portion) 2, a wheel disk 3, a plurality of spokes 4, and the like. The vehicle wheel 1 in the present embodiment will be described as an aluminum integrated wheel.

  The rim 2 is a part to which a tire is attached. An inner rim portion 21 that extends in a cylindrical shape toward the vehicle width direction inner side (vehicle inner side) and a outer rim portion 22 that extends in a cylindrical shape toward the vehicle width direction outer side (vehicle outer side) when the vehicle wheel 1 is attached to the vehicle body. Included (see FIG. 2). Here, the inner rim portion 21 refers to a portion corresponding to a so-called inner rim when the vehicle wheel 1 is a three-piece wheel, or an inner flange in a broad sense. Similarly, the outer rim portion 22 refers to a portion corresponding to a so-called outer rim when the vehicle wheel 1 is a three-piece wheel, or an outer flange in a broad sense.

  The wheel disc 3 is a portion that attaches the vehicle wheel 1 to the vehicle axle by a center bore 31 and a plurality of bolt holes 32 formed in the wheel disc 3 and supports the rim 2 on the outer periphery of the wheel disc 3. .

  The spoke 4 is a part of the wheel disk 3, and extends in a radial manner from the center (shaft) of the wheel disk 3 to the outer periphery (inner peripheral surface of the rim 2) to support the vehicle wheel 1. Part. According to the first embodiment, one end of the spoke 4 is fixed to the central portion of the wheel disc 3, but the other end is further from the outer peripheral portion (inner peripheral surface of the rim 2) to the outer rim portion 22 to the inner rim portion 21. Is extended (passed) along. In FIGS. 1 and 2, the spoke 4 extends from the outer rim portion 22 along the inner rim portion 21 on the surface of the rim 2 on the axle side.

  In this case, the spoke 4 extended between the inner rim portion 21 and the outer rim portion 22 is a beam (hereinafter referred to as “reinforcing beam”) having a thicker section (thickness) than the rim 2 as shown in FIG. And so on. Then, for example, in the cross section taken along the line A-A ′ of FIG. 2, the spoke 4 having a thicker cross section than the rim 2 is formed on the surface of the rim 2 on the axle side as shown in FIG. 3. The rim 2 and the spoke 4 thus configured can sufficiently ensure rigidity and strength.

  Further, by configuring in this way, the rim 2 can keep the shape between the inner rim portion 21 and the outer rim portion 22 in a conventional shape, and the intermediate portion between the beams of the rim 2 can be maintained. It can be made thinner than conventional ones. Therefore, the rigidity and strength of the welded joint between the rim 2 and the wheel disk 3 can be sufficiently secured, and the volume can be reduced to reduce the weight.

  However, if the rim 2 is made too thin, there is a problem that it is difficult for the molten aluminum to enter into details during molding. Therefore, the rim 2 between the reinforcing beam formed by extending the spoke 4 and the reinforcing beam can be formed of another material that is lighter than aluminum such as a thin resin material. Thereby, the further weight reduction of the said wheel 1 for vehicles can be achieved.

  Further, as shown in FIG. 2, the weight of the reinforcing beam formed by extending the spoke 4 can be further reduced by making the beam gradually thinner from the outer rim portion 22 toward the inner rim portion 21. it can. In addition, it is more desirable that the tire side of the rim 2 be covered with a thin resin material or the like in the circumferential direction so as to ensure the airtightness of the tire.

[Second Embodiment]
In the first embodiment described above, as shown in FIG. 1, the spoke 4 is extended along the inner rim portion 21 from the outer rim portion 22 on the axle side surface of the rim 2. Here, the spoke 4 will be described with respect to a form that is similarly extended on the surface of the rim 2 on the tire side.

(Example of vehicle wheel)
FIG. 4 is a diagram for explaining the vehicle wheel in the second embodiment. FIG. 4A is a schematic perspective view of the vehicle wheel according to the second embodiment. FIG. 4B is an example of a schematic cross-sectional view in the circumferential direction of the vehicle wheel.

  The rim 2, wheel disk 3, center bore 31, and bolt hole 32 constituting the vehicle wheel 1 shown in FIG. 4A are the same as those in the first embodiment, and the description is omitted here. To supplement.

  As in the first embodiment, the spoke 4 is a part of the wheel disc 3 and extends radially from the center portion (shaft portion) of the wheel disc 3 to the outer peripheral portion (inner peripheral surface of the rim 2). It is a steel wire or rod-shaped part that supports the wheel 1. According to the second embodiment, one end of the spoke 4 is fixed to the center portion of the wheel disc 3, but the other end is further extended from the outer peripheral portion (inner peripheral surface of the rim 2) to the outer rim portion 22 to the inner rim portion 21. Is extended (passed) along. In FIG. 4A, the spoke 4 extends from the outer rim portion 22 along the inner rim portion 21 on the tire side surface of the rim 2.

  In this case, the spoke 4 extended between the inner rim portion 21 and the outer rim portion 22 is a reinforcing beam having a thicker cross section (thicker width) than the rim 2 as in the first embodiment. Can be configured. Then, for example, in the cross section in the circumferential direction of the vehicle wheel 1, as shown in FIG. 4 (b), the spoke 4 having a thicker cross section than the rim 2 is formed by bonding to the tire side surface of the rim 2. Become. The rim 2 and the spoke 4 thus configured can sufficiently ensure rigidity and strength. Further, since a space on the axle side of the rim 2 in the vehicle wheel 1 can be secured, it is possible to cope with an increase in the size of the brake disc disposed in this space.

  However, if the rim 2 is made too thin, there is a problem that it is difficult for the molten aluminum to enter into details during molding. Therefore, the rim 2 between the reinforcing beam formed by extending the spoke 4 and the reinforcing beam can be formed of another material that is lighter than aluminum such as a thin resin material. Thereby, the further weight reduction of the said wheel 1 for vehicles can be achieved.

  As in the first embodiment, the weight of the reinforcing beam formed by extending the spoke 4 is gradually reduced from the outer rim portion 22 toward the inner rim portion 21 to further reduce the weight. You can also plan. Further, the tire-side surface of the rim 2 or the tire-side surface between the reinforcing beam and the reinforcing beam of the rim 2 is covered with a thin resin material or the like in the circumferential direction, thereby ensuring the airtightness of the tire. It is more desirable to do.

[Third Embodiment]
In the above-described first and second embodiments, as shown in FIG. 1 or 4, the spoke 4 extends along the outer rim portion 22 from the inner rim portion 21 on the axle side (or tire side) surface of the rim 2. It was. Here, the form in which the spoke 4 is formed integrally with the rim 2 will be described.

(Example of vehicle wheel)
FIG. 5 is a diagram for explaining the vehicle wheel according to the third embodiment. FIG. 5A is a schematic perspective view of a vehicle wheel according to the third embodiment. FIG. 5B is an example of a schematic cross-sectional view in the circumferential direction of the vehicle wheel.

  The rim 2, wheel disk 3, center bore 31, and bolt hole 32 constituting the vehicle wheel 1 shown in FIG. 5 (a) are the same as those in the first embodiment, and the description thereof is omitted here, and the spoke 4 is described. To supplement.

  As in the first embodiment, the spoke 4 is a part of the wheel disc 3 and extends radially from the center portion (shaft portion) of the wheel disc 3 to the outer peripheral portion (inner peripheral surface of the rim 2). It is a steel wire or rod-shaped part that supports the wheel 1. According to the third embodiment, one end of the spoke 4 is fixed to the central portion of the wheel disc 3, but the other end is further from the outer peripheral portion (inner peripheral surface of the rim 2) to the outer rim portion 22 to the inner rim portion 21. Is extended (passed) along. In FIG. 5A, the spoke 4 is formed integrally with the rim 2 and extends along the inner rim portion 21 from the outer rim portion 22.

  In this case, the spoke 4 extended between the inner rim portion 21 and the outer rim portion 22 is a reinforcing beam having a thicker cross section (thicker width) than the rim 2 as in the first embodiment. Can be configured. Then, for example, in the cross section in the circumferential direction of the vehicle wheel 1, as shown in FIG. 5B, the spoke 4 having a thicker cross section than the rim 2 is formed on the axle side and tire side surfaces of the rim 2. Become. The rim 2 and the spoke 4 integrally formed in this way can sufficiently ensure rigidity and strength.

  Further, as in the first embodiment, the weight of the reinforcing beam formed by extending the spoke 4 is gradually reduced from the outer rim portion 22 toward the inner rim portion 21, thereby further reducing the weight. You can also plan.

  As described above, the present invention has been described based on each embodiment, but the present invention is not limited to the requirements shown here, such as combinations with other elements listed in the above embodiments. With respect to these points, the present invention can be changed within a range that does not detract from the gist of the present invention, and can be appropriately determined according to the application form.

1 is a schematic perspective view of a vehicle wheel in Embodiment 1. FIG. 1 is a schematic cross-sectional view of a vehicle wheel in Embodiment 1. FIG. It is an example of the schematic sectional drawing about the A-A 'line | wire of FIG. FIG. 6 is a diagram for explaining a vehicle wheel in the second embodiment. FIG. 10 is a diagram for explaining a vehicle wheel in the third embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vehicle wheel 2 Rim part 3 Wheel disc 4 Spoke 21 Inner rim part 22 Outer rim part 31 Center bore 32 Bolt hole

Claims (4)

A vehicle wheel having a spoke and a rim,
The spoke is extended from the wheel disc central portion of the vehicle wheel to the inner peripheral surface of the rim, and further as a reinforcing beam having a thicker cross section than the rim from the outer rim portion of the rim along the inner rim portion. A vehicle wheel characterized by being extended.   2. The vehicle according to claim 1, wherein the reinforcing beam is formed by being bonded to an axle side surface or a tire side surface of the rim, or formed integrally with the rim. wheel.   The vehicle wheel according to claim 1, wherein the rim is formed of a lightweight material between the reinforcing beam and the other reinforcing beam.   The said reinforcing beam is comprised so that the cross section of this reinforcing beam may become thin as it goes to the inner rim part from the outer rim part of the said rim | limb, The Claim 1 thru | or 3 characterized by the above-mentioned. Vehicle wheels.

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