JPS6357241B2 - - Google Patents
Info
- Publication number
- JPS6357241B2 JPS6357241B2 JP445482A JP445482A JPS6357241B2 JP S6357241 B2 JPS6357241 B2 JP S6357241B2 JP 445482 A JP445482 A JP 445482A JP 445482 A JP445482 A JP 445482A JP S6357241 B2 JPS6357241 B2 JP S6357241B2
- Authority
- JP
- Japan
- Prior art keywords
- rim
- light alloy
- spokes
- hub
- outer ring
- 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
Links
- 229910001234 light alloy Inorganic materials 0.000 claims description 19
- 238000005520 cutting process Methods 0.000 claims description 10
- 239000000463 material Substances 0.000 claims description 9
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 238000005266 casting Methods 0.000 description 7
- 230000007547 defect Effects 0.000 description 4
- 229910000838 Al alloy Inorganic materials 0.000 description 3
- 238000005452 bending Methods 0.000 description 3
- 238000003466 welding Methods 0.000 description 3
- 239000011324 bead Substances 0.000 description 2
- 210000005069 ears Anatomy 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 101100334009 Caenorhabditis elegans rib-2 gene Proteins 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000013585 weight reducing agent Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B3/00—Disc wheels, i.e. wheels with load-supporting disc body
- B60B3/06—Disc wheels, i.e. wheels with load-supporting disc body formed by casting
Description
【発明の詳細な説明】
本発明は、オートバイ、原動機付自転車及びス
クータ等の自動二輪車に用いられる軽合金製車輪
に係り、詳しくは小径の車輪に好適であり、かつ
別体に形成されたリム、スポーク及びハブよりな
る３ピース軽合金製車輪に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a light alloy wheel used for two-wheeled vehicles such as motorcycles, motorized bicycles, and scooters, and more specifically, the present invention relates to a light alloy wheel that is suitable for small-diameter wheels and that has a separately formed rim. , relates to a three-piece light alloy wheel consisting of spokes and a hub.
従来、この種軽合金製車輪として、特公昭55−
38281号公報に示されるように、長尺の軽合金製
型材を一定巾員に切断して形成した板状のスポー
クを、リム内周面に形成した突片及びハブに形成
又は嵌合した膨出片等にそれぞれ止着して構成し
たものが知られている。しかし、該軽合金製車輪
は、内周面に突片を形成したリムいわゆるフラン
ジ付リムを必要とするが、該フランジ付リムは、
曲げ加工において突片（フランジ）部分に大きな
圧縮力が作用する関係で、小径のリムを形成する
ことは困難であり、このため小径車輪には適用す
ることができないと共に、スポーク先端がリムの
内周数箇所において固定されているため、該スポ
ークの固定部分におけるリムには大きな集中荷重
が作用し、剛性の高いフランジ付リムを用いない
と、変形する虞れがある。また、実開昭55−
160901号公報には、リムをロール成形で形成し、
スポーク及びハブを鋳造により成形し、両者を一
体に接合した軽合金製車輪が示されているが、該
軽合金製車輪は、鋳造に際しての湯流れを確保す
るため、スポークは多数の腕を放射状に突出した
リングレス状にする必要があり、従つて一体構造
の鋳造車輪に比して鋳造欠陥が少なくなるといえ
ども、依然として鋳造欠陥の虞れがあると共に、
前述従来例と同様に、スポーク先端がリム内周数
箇所において固定されているため、衝撃荷重等に
よりリムの変形が発生する虞れがある。 Conventionally, this type of light alloy wheel was manufactured by
As shown in Publication No. 38281, plate-shaped spokes are formed by cutting a long light alloy profile into a certain width, and a protrusion formed on the inner circumferential surface of the rim and a bulge formed or fitted on the hub are used. It is known to have a structure in which each piece is fixed to a projecting piece or the like. However, the light alloy wheel requires a rim with a protrusion formed on the inner peripheral surface, so-called a flanged rim.
It is difficult to form small-diameter rims because a large compressive force is applied to the flange portion during bending, and for this reason it cannot be applied to small-diameter wheels, and the tips of the spokes do not fit inside the rim. Since the spokes are fixed at several points around the circumference, a large concentrated load acts on the rim at the fixed portions of the spokes, and there is a risk of deformation unless a flanged rim with high rigidity is used. Also, Utsukai Showa 55-
Publication No. 160901 discloses that the rim is formed by roll forming,
A light alloy wheel is shown in which the spokes and hub are molded by casting, and both are joined together.In order to ensure the flow of hot metal during casting, the spokes have a number of radial arms. Although it is necessary to have a protruding ringless shape, and therefore there are fewer casting defects compared to a cast wheel with a monolithic structure, there is still a risk of casting defects, and
As in the conventional example described above, since the spoke tips are fixed at several locations on the inner circumference of the rim, there is a risk that the rim may be deformed due to impact loads or the like.
そこで、本発明は、リムが平坦状よりなる内周
面を有し、またスポークが、所定断面形状よりな
る型材を長手方向に直交するように所定幅にて輪
切りにして形成した、内側リング、外側リング及
びこれら両リングに渡つて延びている多数のリブ
を有し、内側リングをハブに嵌合すると共に、外
側リングをリム内周面に嵌合して構成し、もつて
上述欠点を解消した軽合金製車輪を提供すること
を目的とするものである。 Therefore, the present invention provides an inner ring in which the rim has a flat inner circumferential surface, and the spokes are formed by cutting a shape material having a predetermined cross-sectional shape into rings at a predetermined width so as to be orthogonal to the longitudinal direction. It has an outer ring and a large number of ribs extending across both rings, and the inner ring is fitted to the hub, and the outer ring is fitted to the inner peripheral surface of the rim, thereby eliminating the above-mentioned drawbacks. The object of the present invention is to provide a light alloy wheel made of aluminum.
以下、図面に沿つて本発明の実施例について説
明する。 Embodiments of the present invention will be described below with reference to the drawings.
軽合金製車輪１は、第１図及び第２図に示すよ
うに、リム２、スポーク３及びハブ５よりなる。
リム２はアルミ合金よりなる棒状の材料をロール
成形により所定断面形状に成形し、更に環状に曲
げて両端を溶接して形成されており、従つて塑性
加工に基づき均質な製品を連続的に得ることがで
きると共に、塑性硬化により強度が向上してい
る。そして、リム２はその両側に外径側に突出し
て耳部６，６を、またこれら耳部に隣接してビー
ド座部７，７を、更に両ビード座部の間にドロツ
プ部９を有しており、またドロツプ部９における
底面１０即ちリム内周面は平坦状になつている。
一方、スポーク３はアルミ合金の押出し加工によ
り成形された所定断面からなる型材をその長手方
向に直交するように、所定幅にて輪切りにし、更
に必要に応じて内外面及び側面を切削加工して形
成されており、従つて押出し加工に基づき、精度
が高く、かつピンホール又はブローホール等の鋳
造欠陥のない製品を連続的に得ることができると
共に、平行に輪切り加工することと相俟つて、
100％近い材料の歩留りを得ることができる。そ
して、スポーク３は所定内径よりなる内側リング
１１及び所定外径よりなる外側リング１２を有し
ており、更にこれら両リング１１，１２が同芯状
に位置するように、両リング１１，１２に渡つて
多数の放射方向に延びるリブ１３…が形成されて
おり、かつこれら両リング１１，１２及びリブ１
３は同一幅Ｔにより構成されている。更に、内側
リング１１近傍の４箇所にネジ孔１５を有する厚
肉部１６が形成されており、また外側リング１２
にバルブ孔１７を有する厚肉部１９が形成されて
いる。また、ハブ５はアルミ合金のダイキヤスト
により成形され、更に切削加工して形成されてお
り、鋼材よりなるブレーキドラム２０及び車軸用
ボス２１が鋳込まれて形成されている。そして、
ハブ５は中心にボス２１を包んだボス包持部２２
を有する有底円筒状よりなり、その円筒部２３の
内径面にはブレーキドラム２０が包持され、かつ
その外径は所定径よりなる平坦面２５になつてい
る。更に、ハブ５の有底部２６における外径側の
４箇所に外方に突出してボルト孔２７を有する突
起２８…が形成されており、また円筒部２３の外
径先端側には水切り用の凹溝２９が形成されてい
る。 A light alloy wheel 1 includes a rim 2, spokes 3, and a hub 5, as shown in FIGS. 1 and 2.
The rim 2 is formed by roll-forming a bar-shaped material made of aluminum alloy into a predetermined cross-sectional shape, then bending it into an annular shape and welding both ends.Therefore, a homogeneous product is continuously obtained based on plastic working. In addition, the strength is improved by plastic hardening. The rim 2 has ears 6, 6 protruding outwardly on both sides thereof, bead seats 7, 7 adjacent to these ears, and a drop part 9 between both bead seats. Further, the bottom surface 10 of the drop portion 9, that is, the inner circumferential surface of the rim is flat.
On the other hand, the spokes 3 are made by cutting a molded material with a predetermined cross section formed by extrusion of aluminum alloy into rounds at a predetermined width perpendicular to its longitudinal direction, and then cutting the inner and outer surfaces and side surfaces as necessary. Therefore, based on extrusion processing, it is possible to continuously obtain products with high precision and without casting defects such as pinholes or blowholes, and in conjunction with parallel cutting processing,
Material yields close to 100% can be obtained. The spokes 3 have an inner ring 11 having a predetermined inner diameter and an outer ring 12 having a predetermined outer diameter. A large number of ribs 13 extending in the radial direction are formed across the rings 11, 12 and the ribs 1.
3 are constructed with the same width T. Furthermore, thick portions 16 having screw holes 15 are formed at four locations near the inner ring 11, and the outer ring 12
A thick walled portion 19 having a valve hole 17 is formed therein. Further, the hub 5 is formed by die casting of an aluminum alloy, and is further formed by cutting, and a brake drum 20 and an axle boss 21 made of steel are cast therein. and,
The hub 5 has a boss-wrapping part 22 that surrounds the boss 21 at the center.
The brake drum 20 is enclosed on the inner diameter surface of the cylindrical portion 23, and the outer diameter thereof is a flat surface 25 having a predetermined diameter. Further, projections 28 having bolt holes 27 are formed at four locations on the outer diameter side of the bottomed portion 26 of the hub 5, and protrusions 28 that project outward and have bolt holes 27 are formed, and a recess for draining water is formed on the outer diameter tip side of the cylindrical portion 23. A groove 29 is formed.
そして、ハブ５の円筒部２３の外径平坦面２５
にスポーク３の内側リング１１が嵌合され、更に
ボルト３０を突起２８のボルト孔２７から肉厚部
１６のネジ孔１５に螺合・締付けることにより、
ハブ５とスポーク３とは一体に固定される。ま
た、スポーク３の外側リング１２にリム２の平坦
状内周面１０が嵌合され、外側リング１２及び底
面１０の間にスポツト溶接をすることにより、ス
ポーク３とリム２は一体に固定され、これにより
軽合金製車輪１が構成される。 Then, the outer diameter flat surface 25 of the cylindrical portion 23 of the hub 5
The inner ring 11 of the spoke 3 is fitted to the inner ring 11 of the spoke 3, and the bolt 30 is screwed and tightened from the bolt hole 27 of the protrusion 28 into the screw hole 15 of the thick part 16.
The hub 5 and spokes 3 are fixed integrally. Furthermore, the flat inner circumferential surface 10 of the rim 2 is fitted into the outer ring 12 of the spoke 3, and spot welding is performed between the outer ring 12 and the bottom surface 10, so that the spokes 3 and the rim 2 are fixed as one body. As a result, the light alloy wheel 1 is constructed.
なお、上述実施例に限らず、ハブ５とスポーク
３の固着を、圧入・接着、焼ばめ・接着又は静
合・ボルト固定等の他の固着方法でも良く、また
リム２とスポーク３の固着を、圧入、焼ばめ、接
着材、ネジ止め又はMIG溶接等の他の固着方法
でも良いことは勿論である。また、スポーク３の
リブ１３は放射状に限らず、２本のリブが交差す
るようにしても良い。 Note that the fixation of the hub 5 and the spokes 3 is not limited to the above-mentioned embodiments, and other fixing methods such as press fitting/adhesion, shrink fitting/adhesion, static fitting/bolt fixation, etc. may also be used. Of course, other fixing methods such as press fitting, shrink fitting, adhesive, screwing, or MIG welding may also be used. Further, the ribs 13 of the spokes 3 are not limited to a radial shape, but two ribs may intersect with each other.
以上説明したように、本発明によれば、リム２
が平坦状よりなる内周面１０を有する軽合金製リ
ムよりなるので、曲げ加工に際して障害となるフ
ランジ（突片）を有さず、小径のリムを形成する
ことができ、またスポーク３を、所定断面形状よ
りなる型材を長手方向に直交するように所定幅に
て輪切りにして形成したので、内径及び外径の精
度が高く、かつ鋳造のように、ピンホールやブロ
ーホール等の鋳造欠陥が発生せず、また、スポー
ク３は内側リング１１、外側リング１２及びこれ
ら両リング１１，１２に渡つて延びている多数の
リブ１３を有しているので、極めて頑丈な構成と
なり、かつ薄肉に形成でき、大幅な軽量化を図る
ことができる。また、リム２の平坦状内周面１０
にスポーク３の外側リング１２を嵌合して固定す
ると共に、スポーク３の内側リング１１にハブ５
を嵌合して固定したので、リブ２はその内周面１
０全長に渡つて外側リング１２で補強されて、集
中荷重が作用することがなく、軽合金製リム２に
起因する抗張力の低下にかかわらず、衝撃荷重等
に対しても極めて強い構成となつていると共に、
リム２、スポーク３及びハブ５との間の接触面が
大きく、これらの間の固定を確実に行うことがで
きる。更に、内側リング１１、外側リング１２及
び全周に渡り均等に配置し得る多数のリブ１３を
有する型材からなるスポーク３、並びに一定肉厚
により形成されるリム２に基づき、車輪のバラン
ス精度が向上し、車輪フレを減少できて、走行安
定性を向上し、かつバランスウエートの取付けを
必要としないか、又は必要な場合でもその取付け
は極めて簡単となる。また、スポーク３を型材を
平行に輪切りにして形成し、同一幅Ｔよりなる内
側リング１１、外側リング１２及びリブ１３によ
り構成すると、材料の歩留りを100％近くにでき
ると共に、切断及び切削加工が平面により極めて
容易となり、安価に製造することができる。 As explained above, according to the present invention, the rim 2
Since the spokes 3 are made of a light alloy rim having a flat inner circumferential surface 10, there is no flange (projection) that becomes an obstacle during bending, and a small diameter rim can be formed. Since the mold material with a predetermined cross-sectional shape is cut into rounds at a predetermined width perpendicular to the longitudinal direction, the accuracy of the inner and outer diameters is high, and unlike casting, there are no casting defects such as pinholes or blowholes. In addition, since the spokes 3 have an inner ring 11, an outer ring 12, and a large number of ribs 13 extending across both rings 11 and 12, the spokes 3 have an extremely strong structure and are formed with a thin wall. It is possible to achieve a significant weight reduction. Further, the flat inner circumferential surface 10 of the rim 2
At the same time, the outer ring 12 of the spoke 3 is fitted and fixed, and the hub 5 is fitted to the inner ring 11 of the spoke 3.
Since the ribs 2 are fitted and fixed, the inner peripheral surface 1 of the rib 2
The entire length of the rim is reinforced with the outer ring 12, so concentrated loads do not act on it, and despite the decrease in tensile strength caused by the light alloy rim 2, it is extremely strong against impact loads, etc. Along with being there,
The contact surface between the rim 2, spokes 3, and hub 5 is large, and the fixation between them can be ensured. Furthermore, the balance accuracy of the wheel is improved based on the inner ring 11, the outer ring 12, the spokes 3 made of a shaped material having a large number of ribs 13 that can be arranged evenly over the entire circumference, and the rim 2 formed with a constant wall thickness. However, wheel deflection can be reduced, driving stability is improved, and installation of a balance weight is not required, or even if it is necessary, installation is extremely simple. Furthermore, if the spokes 3 are formed by cutting a shape material into parallel rings and are composed of an inner ring 11, an outer ring 12, and a rib 13 having the same width T, the material yield can be close to 100%, and cutting and machining can be done easily. The flat surface makes it extremely easy to manufacture and can be manufactured at low cost.
第１図は本発明に係る軽合金製車輪を示す正面
図、第２図はその−線による断面図である。
１……軽合金製車輪、２……リム、３……スポ
ーク、５……ハブ、１０……内周面、１１……内
側リング、１２……外側リング、１３……リブ、
Ｔ……所定幅。
FIG. 1 is a front view showing a light alloy wheel according to the present invention, and FIG. 2 is a sectional view taken along the line -. DESCRIPTION OF SYMBOLS 1... Light alloy wheel, 2... Rim, 3... Spoke, 5... Hub, 10... Inner peripheral surface, 11... Inner ring, 12... Outer ring, 13... Rib,
T...Predetermined width.
Claims (1)
軽合金製スポークそしてハブを一体に固定してな
る軽合金製車輪において、リムが平坦状よりなる
内周面を有し、またスポークが、所定断面形状よ
りなる型材を長手方向に直交するように所定幅に
て輪切りにして形成した、内側リング、外側リン
グ及びこれら両リングに渡つて延びている多数の
リブを有し、内側リングをハブに嵌合すると共
に、外側リングをリム内周面に嵌合して構成した
軽合金製車輪。 ２ スポークが、型材を平行に輪切りにして形成
した、同一幅よりなる内側リング、外側リング及
びリブを有すスポークである特許請求の範囲第１
項記載の軽合金製車輪。[Scope of Claims] 1. A light alloy wheel formed by integrally fixing a light alloy rim, light alloy spokes, and hub, which are each formed separately, wherein the rim has a flat inner circumferential surface. In addition, the spokes have an inner ring, an outer ring, and a large number of ribs extending across both rings, which are formed by cutting a molded material having a predetermined cross-sectional shape into rings at a predetermined width so as to be perpendicular to the longitudinal direction. , a light alloy wheel constructed by fitting an inner ring to a hub and fitting an outer ring to the inner peripheral surface of a rim. 2. Claim 1, wherein the spoke is a spoke having an inner ring, an outer ring, and ribs of the same width, which are formed by cutting a shape into parallel rings.
Light alloy wheels as described in section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP445482A JPS58122201A (en) | 1982-01-14 | 1982-01-14 | Light alloy wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP445482A JPS58122201A (en) | 1982-01-14 | 1982-01-14 | Light alloy wheel |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS58122201A JPS58122201A (en) | 1983-07-20 |
| JPS6357241B2 true JPS6357241B2 (en) | 1988-11-10 |
Family
ID=11584595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP445482A Granted JPS58122201A (en) | 1982-01-14 | 1982-01-14 | Light alloy wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58122201A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS639001U (en) * | 1986-07-07 | 1988-01-21 | ||
| JP3614954B2 (en) * | 1995-10-24 | 2005-01-26 | 本田技研工業株式会社 | Cast wheel and its manufacturing method |
| US6726292B1 (en) * | 2000-07-27 | 2004-04-27 | Daimlerchrysler Corporation | Full off-set two-piece fiber reinforced composite wheel using spoke or web area box sections |
| US7040714B2 (en) | 2002-08-21 | 2006-05-09 | Daimlerchrysler Corporation | Composite wheel and method for manufacturing the same |
-
1982
- 1982-01-14 JP JP445482A patent/JPS58122201A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS58122201A (en) | 1983-07-20 |
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