JPH058602A - Disk wheel - Google Patents
Disk wheelInfo
- Publication number
- JPH058602A JPH058602A JP16537791A JP16537791A JPH058602A JP H058602 A JPH058602 A JP H058602A JP 16537791 A JP16537791 A JP 16537791A JP 16537791 A JP16537791 A JP 16537791A JP H058602 A JPH058602 A JP H058602A
- Authority
- JP
- Japan
- Prior art keywords
- disc wheel
- hub
- hub bolt
- disk wheel
- disc
- 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.)
- Pending
Links
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 229910001234 light alloy Inorganic materials 0.000 claims description 10
- 229910000831 Steel Inorganic materials 0.000 abstract description 10
- 239000010959 steel Substances 0.000 abstract description 10
- 230000002093 peripheral effect Effects 0.000 abstract description 7
- 238000009434 installation Methods 0.000 abstract 1
- 229910000838 Al alloy Inorganic materials 0.000 description 4
- 229910000861 Mg alloy Inorganic materials 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
Landscapes
- Connection Of Plates (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、各種車輌のタイヤを保
持するためのディスクホイールに関し、特にＡｌ合金、
Ｍｇ合金に代表される軽合金材料で構成されるディスク
ホイールの改良に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disc wheel for holding tires of various vehicles, and particularly to an Al alloy,
The present invention relates to improvement of a disc wheel made of a light alloy material typified by a Mg alloy.
【０００２】[0002]
【従来の技術】従来の軽合金材料からなるディスクホイ
ールは、図２に示すように、図示しないタイヤが嵌め込
まれるリム部１とその内側のディスク部２とを接合する
かまたは一体成形した構成となっている。前記ディスク
部２は、車体側の図示しないハブに取付けられるハブ取
付け部３と、その外側に略放射線状に延出するスポーク
部４とに区分され、ハブ取付け部３にはハブボルト（図
示せず）が挿通される複数のハブボルト孔５が形成さ
れ、さらに該ハブボルト孔５には鋼製のブッシュ６が嵌
合されている。2. Description of the Related Art As shown in FIG. 2, a conventional disc wheel made of a light alloy material has a structure in which a rim portion 1 into which a tire (not shown) is fitted and a disc portion 2 inside thereof are joined or integrally formed. Has become. The disk portion 2 is divided into a hub attaching portion 3 attached to a hub (not shown) on the vehicle body side and a spoke portion 4 extending outward in a substantially radial manner. The hub attaching portion 3 has a hub bolt (not shown). ) Are inserted, a plurality of hub bolt holes 5 are formed, and a steel bush 6 is fitted into the hub bolt holes 5.
【０００３】この鋼製ブッシュ６は、軽合金材料製ディ
スクホイールにとって極めて重要な意味を有する。すな
わち、ディスクホイール使用時においては、ハブボルト
孔５の開口端周縁部が、図示しないハブボルトに締付け
られたナットにより繰返し応力や摩擦を受けるから、該
周縁部にへたりや摩擦が生ずる。このようなへたりや摩
擦が進行すれば、ナットに緩みが生じて危険である。The steel bush 6 has a very important meaning for a disc wheel made of a light alloy material. That is, when the disc wheel is used, the peripheral edge portion of the opening end of the hub bolt hole 5 is repeatedly subjected to stress and friction by the nut tightened on the hub bolt (not shown), so that the peripheral edge portion is rubbed and rubbed. If such fatigue or friction progresses, the nut is loosened, which is dangerous.
【０００４】特に、軽合金材料は鋼材料に比べ、強度お
よび耐摩耗性が劣るため、この傾向は顕著となる。そこ
で、軽合金材料製ディスクホイールの場合には、ハブボ
ルト孔５に軽合金材料に比べて強度、耐摩耗性の高い鋼
製のブッシュ６を嵌合するのである。Particularly, the light alloy material is inferior in strength and wear resistance to the steel material, so that this tendency becomes remarkable. Therefore, in the case of a disc wheel made of a light alloy material, a bush 6 made of steel having higher strength and higher wear resistance than the light alloy material is fitted into the hub bolt hole 5.
【０００５】[0005]
【発明が解決しようとする課題】前記ブッシュ６は、軽
合金材料でディスクホイールを鋳造する際に鋳ぐるむ
か、あるいは鋳造後に圧入することにより設けられてい
る。しかし、生産性を考慮した場合、以上のような工程
を省略しブッシュレス化することが望ましい。また、鋼
製ブッシュ６をＡｌ合金又はＭｇ合金製ディスクホイー
ルに装着した場合、鋼製ブッシュとその周囲のＡｌ合金
又はＭｇ合金との電位差によって、その境界部で電食が
生じ易い。特にＭｇ合金の場合にこの傾向は顕著とな
る。したがって、かかる観点からしても鋼製ブッシュを
省略することが望まれていた。The bush 6 is provided by casting the disc wheel with a light alloy material or by press-fitting after casting. However, when productivity is taken into consideration, it is desirable to omit the above steps and to make them bushless. Further, when the steel bush 6 is mounted on a disc wheel made of an Al alloy or a Mg alloy, due to the potential difference between the steel bush and the Al alloy or the Mg alloy around it, electrolytic corrosion is likely to occur at the boundary portion. This tendency is particularly remarkable in the case of Mg alloy. Therefore, even from this viewpoint, it has been desired to omit the steel bush.
【０００６】そこで本発明は、ナットの緩みを防止しつ
つ、かつブッシュレス化を図ることができる軽合金製材
料のディスクホイールの提供を課題とする。Therefore, an object of the present invention is to provide a disc wheel made of a light alloy material which can prevent the nut from loosening and can be made bushless.
【０００７】[0007]
【課題を解決するための手段】本発明者等は前記課題を
解決するべく種々検討を行った結果、ハブボルト孔周縁
部のへたりはある特定の量までは進行するが、それ以上
は容易には進行しないことを知見した。そこで、使用前
に予め当該へたり量に相当する量をハブボルト孔周縁部
に設けておけば、使用による新たなへたりを最小限に抑
えることができるものと予測し、実験を行った。その結
果、へたりによるナットの緩みを防止することができ、
しかも加工硬化により摩耗量を低減することができるこ
とを知見した。As a result of various studies to solve the above problems, the present inventors have found that the peripheral edge of the hub bolt hole progresses to a certain amount, but more easily. Was found not to progress. Therefore, it was predicted that a new amount of sag due to use could be minimized by providing an amount corresponding to the amount of sag in the peripheral portion of the hub bolt hole before use, and an experiment was conducted. As a result, it is possible to prevent the nut from loosening due to fatigue,
Moreover, it has been found that the amount of wear can be reduced by work hardening.
【０００８】本発明は上記知見に基づきなされたもの
で、軽合金材料からなり、ディスク部及び該ディスク部
のハブ取付け部に複数のハブボルト孔が形成されている
ディスクホイールにおいて、前記ハブボルト孔開口端周
縁部に圧縮応力が付与されていることを特徴とするディ
スクホイールである。The present invention has been made on the basis of the above findings, and in a disc wheel made of a light alloy material and having a plurality of hub bolt holes formed in a disc portion and a hub mounting portion of the disc portion, the hub bolt hole opening end is provided. The disc wheel is characterized in that a compressive stress is applied to the peripheral portion.
【０００９】[0009]
【作用】本発明によると、使用により生じるへたり量に
相当する量の凹部をハブボルト孔開口端部周縁に予め圧
縮応力を付与することにより形成しておくため、後のデ
ィスクホイール使用によるへたりを抑制することができ
る。しかもこの圧縮応力が付与されたハブボルト孔開口
端部は加工硬化されており、使用による摩耗が低減でき
る。According to the present invention, since a recess having an amount corresponding to the amount of sag generated by use is formed by applying a compressive stress to the peripheral edge of the opening of the hub bolt hole in advance, the sag caused by the later use of the disc wheel. Can be suppressed. Moreover, the opening end of the hub bolt hole to which this compressive stress is applied is work hardened, and wear due to use can be reduced.
【００１０】また、鋼製ブッシュを設けないので、電位
差による電食の問題は生ぜず、更にブッシュを設ける場
合に比べて製造は容易である。Further, since the steel bush is not provided, the problem of electrolytic corrosion due to the potential difference does not occur, and the manufacturing is easier than the case where the bush is further provided.
【００１１】[0011]
【実施例】以下本発明を実施例に基づき説明する。ＪＩ
ＳＡＣ４ＣのＡｌ合金を用い、ディスクホイール素材を
鋳造した。得られたディスクホイール素材を熱処理後、
機械加工して５．５Ｊ×１４インチのディスクホイール
とした。EXAMPLES The present invention will be described below based on examples. JI
A disc wheel material was cast using an SAC4C Al alloy. After heat treatment of the obtained disc wheel material,
It was machined into a 5.5J x 14 inch disc wheel.
【００１２】その後、ハブボルト孔５の開口端周辺部に
コイニング加工を施し、図１に示すディスクホイールを
得た。なお、ハブボルト孔５の開口端部は、コイニング
加工前を点線で、コイニング加工後を実線で示してあ
る。また、図２と同一部分については同一符号を記して
ある。Thereafter, coining was applied to the periphery of the opening end of the hub bolt hole 5 to obtain the disc wheel shown in FIG. The opening end of the hub bolt hole 5 is shown by a dotted line before coining and by a solid line after coining. The same parts as those in FIG. 2 are designated by the same reference numerals.
【００１３】以上で得られたディスクホイールを用い、
ドラム耐久試験および実車による８の字旋回試験を行っ
たところ、ハブボルトナットの緩みはなく、鋼製ブッシ
ュを用いた場合と同等の耐久性を示した。Using the disc wheel obtained above,
When a drum durability test and a figure-eight swing test using an actual vehicle were carried out, there was no slack in the hub bolt nut, and it was as durable as when a steel bush was used.
【００１４】本発明によると、ナットの緩み防止、電食
の防止以外に、ブッシュレス化によりディスクホイール
の軽量化にも寄与し、本実施例によると鋼製ブッシュも
用いた場合に比べ３００ｇの軽量化が達成された。According to the present invention, in addition to preventing loosening of nuts and preventing electrolytic corrosion, the bushless structure contributes to weight reduction of the disc wheel. Weight reduction was achieved.
【００１５】[0015]
【発明の効果】以上説明のように、本発明によると、ブ
ッシュレスを図りつつディスクホイールの使用による緩
みを防止し、更に電食の問題も生じない。また、軽量化
を図ることができる。As described above, according to the present invention, it is possible to prevent bushing from loosening due to the use of the disc wheel, and to prevent electrolytic corrosion. Further, it is possible to reduce the weight.
【図１】本発明によるディスクホイールの一実施例を示
す縦断面図である。FIG. 1 is a vertical sectional view showing an embodiment of a disc wheel according to the present invention.
【図２】従来のディスクホイールを示す縦断面図であ
る。FIG. 2 is a vertical cross-sectional view showing a conventional disc wheel.
１ リム部 ２ ディスク部 ３ ハブ取付け部 ４ スポーク部 ５ ハブボルト孔 ６ ブッシュ 1 rim part 2 disk part 3 hub mounting part 4 spoke part 5 hub bolt hole 6 bush
Claims (1)
ディスク部のハブ取付け部に複数のハブボルト孔が形成
されているディスクホイールにおいて、前記ハブボルト
孔開口端周縁部に圧縮応力が付与されていることを特徴
とするディスクホイール。Claim: What is claimed is: 1. A disc wheel made of a light alloy material, wherein a plurality of hub bolt holes are formed in a disc portion and a hub mounting portion of the disc portion. A disc wheel that is stressed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16537791A JPH058602A (en) | 1991-07-05 | 1991-07-05 | Disk wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16537791A JPH058602A (en) | 1991-07-05 | 1991-07-05 | Disk wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH058602A true JPH058602A (en) | 1993-01-19 |
Family
ID=15811222
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16537791A Pending JPH058602A (en) | 1991-07-05 | 1991-07-05 | Disk wheel |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH058602A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803315A1 (en) * | 1996-04-16 | 1997-10-29 | Dayton Walther Corporation | Ductile iron vehicle hub and method for producing same |
| JP2003072302A (en) * | 2001-08-31 | 2003-03-12 | Hitachi Metals Ltd | Light alloy wheel for vehicle and its die for casting |
| JP2013071720A (en) * | 2011-09-29 | 2013-04-22 | Hitachi Metals Ltd | Aluminum alloy wheel for vehicle |
-
1991
- 1991-07-05 JP JP16537791A patent/JPH058602A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803315A1 (en) * | 1996-04-16 | 1997-10-29 | Dayton Walther Corporation | Ductile iron vehicle hub and method for producing same |
| JP2003072302A (en) * | 2001-08-31 | 2003-03-12 | Hitachi Metals Ltd | Light alloy wheel for vehicle and its die for casting |
| JP2013071720A (en) * | 2011-09-29 | 2013-04-22 | Hitachi Metals Ltd | Aluminum alloy wheel for vehicle |
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