JPH0529121Y2 - - Google Patents
Info
- Publication number
- JPH0529121Y2 JPH0529121Y2 JP1986125851U JP12585186U JPH0529121Y2 JP H0529121 Y2 JPH0529121 Y2 JP H0529121Y2 JP 1986125851 U JP1986125851 U JP 1986125851U JP 12585186 U JP12585186 U JP 12585186U JP H0529121 Y2 JPH0529121 Y2 JP H0529121Y2
- Authority
- JP
- Japan
- Prior art keywords
- spoke
- wheel
- opening
- vehicle wheel
- rotational direction
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005266 casting Methods 0.000 claims description 9
- 238000000465 moulding Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229910001234 light alloy Inorganic materials 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
Description
【考案の詳細な説明】
〔考案の目的〕
（産業上の利用分野）
この考案はリム部、ハブ部およびスポーク部を
一体に成型した車両用ホイールに係り、特に自動
二輪車等に適したホイール構造に関する。[Detailed explanation of the invention] [Purpose of the invention] (Field of industrial application) This invention relates to a vehicle wheel in which a rim part, a hub part, and a spoke part are integrally molded, and is a wheel structure particularly suitable for motorcycles, etc. Regarding.
（従来の技術）
自動二輪車等の車両用ホイールではスポーク組
立式ホイールに代り、構造が簡単で点検整備が容
易な一体成形型リジツトホイールが開発されてい
る。この車両用ホイールは、タイヤが装着される
リム部と車軸取付孔を形成したハブ部と、これら
を連絡するスポーク部とが軽合金で鋳造等により
一体に成型される。(Prior Art) In place of spoke assembled wheels for wheels for vehicles such as motorcycles, integrally molded rigid wheels, which have a simple structure and are easy to inspect and maintain, have been developed. In this vehicle wheel, a rim part on which a tire is mounted, a hub part in which an axle mounting hole is formed, and spoke parts connecting these parts are integrally molded by casting or the like from a light alloy.
従来の車両用ホイール１は、第５図および第６
図に示すようにホイール軽量化と高い剛性を目的
としてスポーク部２が閉じた断面の中空形状に形
成される。このホイール構造においてはスポーク
部２が閉じた閉断面を有するために、スポーク部
２の形成に大きな中子を必要とし、鋳造で一体成
型するとき、スポーク部の型抜きが困難であつた
（実開昭60−139501号参照）。 The conventional vehicle wheel 1 is shown in FIGS. 5 and 6.
As shown in the figure, the spoke portions 2 are formed in a hollow shape with a closed cross section for the purpose of reducing the weight of the wheel and increasing its rigidity. In this wheel structure, since the spoke portions 2 have a closed cross section, a large core is required to form the spoke portions 2, and when integrally molded by casting, it is difficult to cut out the spoke portions (in practice). (Refer to Kaisho 60-139501).
（考案が解決しようとする問題点）
従来の車両用ホイールはスポーク部が閉断面を
有する中空形状であるため、車両用ホイールを一
体成型する際、スポーク部の型抜きが困難で、歩
留め率が低下したり、生産性が悪く、コストアツ
プの要因となつていた。(Problem that the invention aims to solve) Since the spokes of conventional vehicle wheels have a hollow shape with a closed cross section, it is difficult to cut out the spokes when integrally molding vehicle wheels, resulting in a low yield rate. This caused a decline in productivity, poor productivity, and increased costs.
この考案は上述した事情を考慮してなされたも
ので、生産性を向上させてコストダウンを図ると
ともに軽量で大きな剛性を有する車両用ホイール
を提供することを目的とする。 This invention was made in consideration of the above-mentioned circumstances, and aims to improve productivity and reduce costs, and to provide a vehicle wheel that is lightweight and has high rigidity.
（問題点を解決するための手段）
上述した目的を達成するために、この考案はタ
イヤが装着されるリム部と、車軸取付孔を形成し
たハブ部と、上記リム部とハブ部とを接続するス
ポーク部とを鋳造により一体に成型した車両用ホ
イールにおいて、上記スポーク部は中空形状に形
成されかつ前記ホイールの回転方向後方側端縁に
軸方向全長に亘つて開口を形成したものである。
(Means for solving the problem) In order to achieve the above-mentioned object, this invention connects a rim part on which a tire is mounted, a hub part in which an axle mounting hole is formed, and the rim part and the hub part. In a vehicle wheel integrally formed with a spoke part by casting, the spoke part is formed in a hollow shape, and an opening is formed over the entire length in the axial direction at the rear end edge in the rotational direction of the wheel.
（作用）
この考案の車両用ホイールはタイヤを装着する
リム部と、車軸取付孔を形成したハブ部と、これ
らを接続するスポーク部とを鋳造等により一体に
成型するとき、スポーク部を中空形状にして軽量
化と剛性アツプを図るとともに、スポーク部はホ
イールの回転方向後方側端縁が軸方向全長に亘つ
て開口させて加工を容易にし、生産性の向上とコ
ストダウンを図れるようにしたものである。(Function) In the vehicle wheel of this invention, when the rim part on which the tire is attached, the hub part in which the axle mounting hole is formed, and the spoke parts that connect these parts are integrally molded by casting etc., the spoke parts are formed into a hollow shape. In addition to reducing weight and increasing rigidity, the spokes are open along the entire axial length of the rear edge in the wheel's rotational direction to facilitate machining, improving productivity and reducing costs. It is.
（実施例）
以下、この考案に係る車両用ホイールの一実施
例について説明する。(Example) Hereinafter, an example of a vehicle wheel according to this invention will be described.
第１図および第２図はこの考案に係る自動二輪
車等に適した車両用ホイール１０を示し、この車
両用ホイール１０はタイヤを装着するリム部１１
と、車軸取付孔１２を形成したハブ部１３と、上
記リム部１１およびハブ部１３を接続するスポー
ク部１４とを軽合金等で鋳造により一体に成型し
たもので、例えば３本のスポーク部１４は中空形
状に形成される。 FIG. 1 and FIG. 2 show a vehicle wheel 10 suitable for motorcycles, etc. according to this invention, and this vehicle wheel 10 has a rim portion 11 on which a tire is mounted.
A hub part 13 in which an axle mounting hole 12 is formed, and spoke parts 14 that connect the rim part 11 and the hub part 13 are integrally molded by casting from a light alloy, for example, three spoke parts 14. is formed into a hollow shape.
各スポーク部１４は車両用ホイール１０の回転
方向後方側が流線形に湾曲し、ホイールデザイン
の向上を図る一方、スポーク部１４は第３図およ
び第４図に示すように、車両用ホイール１０の回
転方向側が円弧状に湾曲成形され、ホイール回転
に伴う空気抵抗を小さくしている。 Each spoke part 14 is curved in a streamlined shape on the rear side in the rotational direction of the vehicle wheel 10 to improve the wheel design. The direction side is curved into an arc shape to reduce air resistance associated with wheel rotation.
また、スポーク部１４の回転方向後方側には軸
方向に延びる開口１５がスリツト状に形成され、
その開口１５の両側には軸方向に延びる補強リブ
１６が一体成形され、開口１５の強度アツプを図
つている。スポーク部１４は第３図および第４図
に示すようにホイールの回転方向後方部分が後方
端の開口部１５に向つて漸次縮小するように形成
され、横断面は全体的に流体抵抗の小さな砲弾形
に構成される。スポーク部１４の開口幅L1，L2
はその中空部の最大幅W1，W2より小さくなるよ
うに構成され、しかも開口１５に補強リブ１６を
一体成形することにより、スポーク部１４の剛性
アツプを図つている。 Further, an opening 15 extending in the axial direction is formed in a slit shape on the rear side of the spoke portion 14 in the rotational direction.
Reinforcing ribs 16 extending in the axial direction are integrally formed on both sides of the opening 15 to increase the strength of the opening 15. As shown in FIGS. 3 and 4, the spoke portions 14 are formed so that the rear portion in the rotational direction of the wheel gradually reduces toward the opening 15 at the rear end, and the overall cross section is a cannonball with small fluid resistance. Composed of shapes. Opening width L 1 , L 2 of spoke portion 14
are configured to be smaller than the maximum widths W 1 and W 2 of the hollow portions, and by integrally molding reinforcing ribs 16 in the openings 15, the rigidity of the spoke portions 14 is increased.
このように、車両用ホイール１０はスポーク部
１４の横断面を砲弾形としたから、流体抵抗が小
さく、走行が安定するとともに、軽量構造で高い
剛性が得られる。スポーク部１４に砂やゴミ等の
異物が侵入したり、付着しても開口１５を通して
容易にクリーニングすることができる。 In this way, since the vehicle wheel 10 has a bullet-shaped cross section of the spoke portions 14, it has low fluid resistance, stable running, and a lightweight structure with high rigidity. Even if foreign matter such as sand or dirt enters or adheres to the spoke portions 14, it can be easily cleaned through the openings 15.
以上に述べたようにこの考案に係る車両用ホイ
ールにおいてはリム部とハブ部とスポーク部とを
鋳造により一体に成型し、上記スポーク部は中空
形状に形成されかつ前記ホイールの回転方向後方
側端縁に軸方向全長に亘つて開口を形成したの
で、軽量構造で高い剛性が得られるとともに、鋳
造により一体成型加工される際、スポーク部の全
長に亘つて形成して開口を利用して外側鋳型に対
して中子型を安定的に固定でき、スポーク部を中
空構造としても偏肉等の発生を有効に防止し、機
械的・物理的強度を充分に確保でき、開口面積を
大きく確保でき、この開口を介して破砕した中子
型を速かに効率よく確保することができ、鋳造に
よる一体成型加工が容易となつて生産性を向上さ
せ、コストダウンを図ることができる。
As described above, in the vehicle wheel according to this invention, the rim part, the hub part, and the spoke parts are integrally molded by casting, and the spoke parts are formed in a hollow shape and are formed at the rear side end in the rotational direction of the wheel. By forming an opening along the entire length of the spoke in the rim, it is possible to obtain a lightweight structure with high rigidity, and when integrally molded by casting, the opening is formed over the entire length of the spoke part and can be used to form an outer mold. The core mold can be stably fixed against the spoke part, even if the spoke part has a hollow structure, uneven thickness can be effectively prevented, sufficient mechanical and physical strength can be secured, and a large opening area can be secured. The crushed core mold can be quickly and efficiently secured through this opening, facilitating integral molding by casting, improving productivity and reducing costs.
また、開口はスポーク部の回転方向後方側端縁
に形成されるので、開口が回転方向後方を向き、
車両用スポークの回転による悪影響を受けること
がなく、美的外観を損ねることもない。 In addition, since the opening is formed at the rear edge of the spoke part in the rotational direction, the opening faces rearward in the rotational direction.
It is not adversely affected by the rotation of vehicle spokes and does not impair its aesthetic appearance.
第１図はこの考案に係る車両用ホイールの一実
施例を示す図、第２図は第１図の−線にほぼ
沿う断面図、第３図および第４図は第１図の−
線および−線に沿う平断面図、第５図は従
来の車両用ホイールを示す図、第６図は第５図の
−線に沿う断面図である。
１０……車両用ホイール、１１……リム部、１
２……車軸取付孔、１３……ハブ部、１４……ス
ポーク部、１５……開口部、１６……補強リブ。
FIG. 1 is a diagram showing an embodiment of a vehicle wheel according to this invention, FIG. 2 is a cross-sectional view taken approximately along the line - in FIG. 1, and FIGS.
5 is a diagram showing a conventional vehicle wheel, and FIG. 6 is a sectional view taken along the line - in FIG. 5. 10... Vehicle wheel, 11... Rim part, 1
2...Axle mounting hole, 13...Hub part, 14...Spoke part, 15...Opening part, 16...Reinforcement rib.
Claims (1)
形成したハブ部と、上記リム部とハブ部とを接
続するスポーク部とを鋳造により一体に成型し
た車両用ホイールにおいて、上記スポーク部は
中空形状に形成されかつ前記ホイールの回転方
向後方側端縁に軸方向全長に亘つて開口を形成
したことを特徴とする車両用ホイール。 ２ スポーク部は、ホイールの回転方向後方側部
分が後方端に向つて漸次絞られ、その開口幅は
スポーク部中空部の最大幅より小さい実用新案
登録請求の範囲第１項に記載の車両用ホイー
ル。[Scope of Claim for Utility Model Registration] 1. A vehicle in which a rim part on which a tire is mounted, a hub part in which an axle mounting hole is formed, and spoke parts connecting the rim part and the hub part are integrally molded by casting. A vehicle wheel, characterized in that the spoke portion is formed in a hollow shape, and an opening is formed over the entire length in the axial direction at the rear end edge of the wheel in the rotational direction. 2. The vehicle wheel according to claim 1, wherein the spoke portion is gradually narrowed toward the rear end in the rear portion in the rotational direction of the wheel, and the opening width thereof is smaller than the maximum width of the hollow portion of the spoke portion. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986125851U JPH0529121Y2 (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986125851U JPH0529121Y2 (en) | 1986-08-20 | 1986-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6332901U JPS6332901U (en) | 1988-03-03 |
| JPH0529121Y2 true JPH0529121Y2 (en) | 1993-07-27 |
Family
ID=31019108
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986125851U Expired - Lifetime JPH0529121Y2 (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0529121Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292925C (en) * | 2002-03-05 | 2007-01-03 | 雅马哈发动机株式会社 | Cast wheel for motor cycle |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4919490A (en) * | 1988-10-12 | 1990-04-24 | E. I. Du Pont De Nemours And Company | Vehicle wheel |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232801B2 (en) * | 1971-12-14 | 1977-08-24 |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232801U (en) * | 1975-08-28 | 1977-03-08 | ||
| JPS56119701U (en) * | 1980-02-15 | 1981-09-11 |
-
1986
- 1986-08-20 JP JP1986125851U patent/JPH0529121Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5232801B2 (en) * | 1971-12-14 | 1977-08-24 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1292925C (en) * | 2002-03-05 | 2007-01-03 | 雅马哈发动机株式会社 | Cast wheel for motor cycle |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6332901U (en) | 1988-03-03 |
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