JPH07276902A - Cast wheel for vehicle - Google Patents
Cast wheel for vehicleInfo
- Publication number
- JPH07276902A JPH07276902A JP6073385A JP7338594A JPH07276902A JP H07276902 A JPH07276902 A JP H07276902A JP 6073385 A JP6073385 A JP 6073385A JP 7338594 A JP7338594 A JP 7338594A JP H07276902 A JPH07276902 A JP H07276902A
- Authority
- JP
- Japan
- Prior art keywords
- spoke
- wheel
- lower edge
- hole
- sand
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/80—Technologies aiming to reduce greenhouse gasses emissions common to all road transportation technologies
- Y02T10/86—Optimisation of rolling resistance, e.g. weight reduction
Landscapes
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明はホイールに関する。FIELD OF THE INVENTION The present invention relates to wheels.
【０００２】[0002]
【従来の技術】自動二輪車等で使用するホイールは、ホ
イールの中心部に置かれアクスルにベアリングを介して
支持されるハブ部と、このハブ部の外周にありタイヤが
装着されるリム部と、これらハブ部とリム部とを結ぶス
ポーク部との３つの部分から構成される。2. Description of the Related Art A wheel used in a motorcycle or the like has a hub portion placed at the center of the wheel and supported by an axle via a bearing, and a rim portion on the outer periphery of the hub portion on which a tire is mounted. It is composed of three parts, a spoke part connecting the hub part and the rim part.
【０００３】以前は鉄板をプレス成型してなるディスク
ホイールが出回ったこともあったが、重いので最近では
あまり使われなくなった。現在では上記ホイール構成部
分の三部分をアルミ合金やマグネシム合金で一体鋳造
し、かつ中空構造にした一体成型ホイールが主流であ
る。In the past, disk wheels made by press-molding an iron plate were in circulation, but since they are heavy, they have not been used so much recently. Presently, the mainstream is an integrally molded wheel in which three parts of the above wheel constituent parts are integrally cast from an aluminum alloy or a magnesium alloy and have a hollow structure.
【０００４】図５〜図７はそのような中空構造のホイー
ル１の一例を示したものであって、図５は正面図、図６
は図５のVI−VI線断面図、図７は図６のVII−VII線断面
図を示している。これらの図からハブ部２とスポーク部
４とが中空に形成されていることがわかる。なお、符号
６が示すものは、リム部である。5 to 7 show an example of the wheel 1 having such a hollow structure. FIG. 5 is a front view and FIG.
Shows a sectional view taken along line VI-VI in FIG. 5, and FIG. 7 shows a sectional view taken along line VII-VII in FIG. From these figures, it can be seen that the hub portion 2 and the spoke portion 4 are hollow. In addition, what is indicated by reference numeral 6 is a rim portion.
【０００５】ところで、従来の中空構造のホイール１に
あっては、図６および図７で示すようにハブ部２とスポ
ーク部４とを結ぶ部分８における当該ハブ部２とスポー
ク部４との間の仕切壁１０のうちスポーク部４の中空４
ａの側に位置する面１０ａが、ハブ部２のうちスポーク
部４と結ばれていない部分１２（ハブ部２のうちスポー
ク部４同士の間に位置する部分）における外周壁１２ａ
と同じに円弧形状をしているため、当該面１０ａとスポ
ーク部内壁面４ｂとによって形成される凹部１４が、図
７に示すようにスポーク部４の中央４ｃからその幅方向
両端４ｄ・４ｄに行くに連れて深くなる形状の凹部であ
ることがわかる。しかも、この凹部１４は、その両端４
ｄ・４ｄが内壁面４ｂの一部４ｂ’によって塞がれてい
るため、当該凹部１４が砂溜まりとなってしまい、鋳造
後、図示しない中子砂をスポーク部４に形成された巾木
穴４ｅ・４ｅから排出する際に、当該凹部１４に砂が溜
まってしまうという問題があった。By the way, in the conventional wheel 1 having a hollow structure, as shown in FIGS. 6 and 7, between the hub portion 2 and the spoke portion 4 in the portion 8 connecting the hub portion 2 and the spoke portion 4. Hollow 4 of the spoke part 4 of the partition wall 10
The surface 10a located on the a side is a peripheral wall 12a in a portion 12 of the hub portion 2 that is not connected to the spoke portions 4 (a portion of the hub portion 2 that is located between the spoke portions 4).
Since it has the same circular arc shape as the above, the concave portion 14 formed by the surface 10a and the spoke inner wall surface 4b goes from the center 4c of the spoke portion 4 to both ends 4d, 4d in the width direction thereof as shown in FIG. It can be seen that the concave portion has a shape that becomes deeper with increasing depth. Moreover, the recess 14 has both ends 4
Since d4d is closed by a part 4b 'of the inner wall surface 4b, the recess 14 becomes a sand pool, and after casting, core sand (not shown) is formed in the spokes 4 in a skirting hole. There is a problem that sand is accumulated in the concave portion 14 when discharged from 4e-4e.
【０００６】このため、当該溜まった砂をかき出すにし
ても、巾木穴４ｅ・４ｅの下縁４ｅ1・４ｅ1の下に位置
する前記内壁面４ｂの一部４ｂ’によって妨げられてし
まい、十分な排除ができないという問題があった。Therefore, even if the collected sand is scraped out, it is obstructed by a part 4b 'of the inner wall surface 4b located below the lower edges 4e 1 and 4e 1 of the skirting holes 4e and 4e, There was a problem that it could not be eliminated sufficiently.
【０００７】そこで、スポーク部４の根元に適宜の孔を
開けて凹部１４に溜まった砂を排除する方法が考えられ
るが、その場合には、集中応力の問題に対処しなければ
ならなかった。また、一方でホイールの一層の軽量化が
望まれた。Therefore, it is possible to remove the sand accumulated in the recesses 14 by forming appropriate holes at the roots of the spokes 4, but in that case, the problem of concentrated stress had to be dealt with. On the other hand, further weight reduction of wheels has been desired.
【０００８】[0008]
【発明が解決しようとする課題】本発明は、上記問題を
解決するものであって、その課題は、砂溜まりが形成さ
れず、集中応力の問題もなく、加えて軽量化が一層進ん
だホイールを提供することにある。DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned problems. The problem is that a sand puddle is not formed, there is no problem of concentrated stress, and the weight is further reduced. To provide.
【０００９】[0009]
【課題を解決するための手段】本発明ホイールは、以上
のような課題を解決するものであって、次のようなもの
である。すなわち、請求項１に係る本発明ホイールは、
ホイールのハブ部とスポーク部とを結ぶ部分における当
該ハブ部とスポーク部との間の仕切壁のうち、スポーク
部に形成された中空の側に位置する面をスポーク中心軸
に対して直角に交叉する平面にするとともにスポーク部
に係る中子の巾木穴下縁と面一にした。The wheel of the present invention solves the above problems and is as follows. That is, the wheel of the present invention according to claim 1 is
Of the partition wall between the hub portion and the spoke portion at the portion connecting the hub portion and the spoke portion of the wheel, the surface located on the hollow side formed in the spoke portion intersects at right angles to the spoke center axis. In addition to making it a flat surface, it is flush with the lower edge of the baseboard hole of the core related to the spoke portion.
【００１０】また、請求項２に係る本発明ホイールは、
前記巾木穴をその上縁から下縁側に行くに連れて大きく
形成したことを特徴とする。The wheel of the present invention according to claim 2 is
It is characterized in that the skirting board hole is formed so as to increase from the upper edge toward the lower edge.
【００１１】[0011]
【作用】したがって、請求項１に係る本発明ホイールに
よれば、仕切壁のうち、スポーク部に形成された中空の
側に位置する面をスポーク中心軸に対して直角に交叉す
る平面にするとともにスポーク部に係る中子の巾木穴下
縁と面一にしたので、巾木穴下縁と仕切壁との間に段差
ができなくなる。したがって、砂溜まりが形成さないよ
うにできるため、従来技術において砂を排除するために
スポーク部の根元に形成していた孔を全く不要にするこ
とができる。このため、当該部分における集中応力の問
題もない。しかも、仕切壁のうち、スポーク部に形成さ
れた中空の側に位置する面が平面であるので、スポーク
部の幅方向両端を結ぶ線分が、従来の円弧形状の場合と
比して短くなる。このためその分だけホイールの軽量化
ができる。Therefore, according to the wheel of the present invention as set forth in claim 1, the surface of the partition wall, which is located on the hollow side formed in the spoke portion, is a flat surface which intersects the spoke central axis at a right angle. Since the core of the spoke portion is flush with the lower edge of the baseboard hole, no step can be formed between the lower edge of the baseboard hole and the partition wall. Therefore, since it is possible to prevent the formation of a sand puddle, it is possible to completely eliminate the hole formed at the base of the spoke portion in order to remove the sand in the prior art. Therefore, there is no problem of concentrated stress in that portion. Moreover, since the surface of the partition wall located on the hollow side formed in the spoke portion is a flat surface, the line segment connecting the widthwise ends of the spoke portion is shorter than in the case of the conventional arc shape. . Therefore, the weight of the wheel can be reduced accordingly.
【００１２】請求項２に係る本発明ホイールによれば、
巾木穴をその上縁から下縁側に行くに連れて大きく形成
したので、重力で自然と下方に溜まりがちな砂のかき出
しが楽にできるようになる。したがって、これによって
も砂の排除ができるので、一層の砂溜まりの防止ができ
る。According to the wheel of the present invention according to claim 2,
Since the skirting board hole is made larger from the upper edge to the lower edge side, it becomes easier to scrape out the sand that tends to naturally accumulate downward due to gravity. Therefore, since the sand can be removed also by this, further accumulation of sand can be prevented.
【００１３】[0013]
【実施例】以下、図面を参照して、本発明ホイール１Ａ
を図示した実施例に従って詳細に説明する。なお、従来
技術の項で説明したホイール１と異なる点は、仕切壁の
形状、巾木穴の形状およびそれに関連する部分だけであ
るので、他の部分には同一符号を付して説明を省略す
る。図１は本発明ホイール１Ａの正面図、図２は図１の
II−II線断面図、図３は図２のIII−III線拡大断面図、
図４は巾木穴４Ａｅの拡大正面図である。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A wheel 1A of the present invention will be described below with reference to the drawings.
Will be described in detail according to the illustrated embodiment. Since the only difference from the wheel 1 described in the section of the prior art is the shape of the partition wall, the shape of the skirting board hole, and the parts related thereto, the other parts are denoted by the same reference numerals and the description thereof is omitted. To do. FIG. 1 is a front view of the wheel 1A of the present invention, and FIG.
II-II line sectional view, FIG. 3 is a III-III line enlarged sectional view of FIG.
FIG. 4 is an enlarged front view of the skirting board hole 4Ae.
【００１４】ホイール１Ａのハブ部２とスポーク部４Ａ
とを結ぶ部分８におけるハブ部２とスポーク部４との間
の仕切壁１０Ａのうち、スポーク部４Ａに形成された中
空４Ａａの側に位置する面１０Ａａは、図２または図３
からわかるように、スポーク部４Ａの中心軸１６（以下
「スポーク中心軸１６」という。）に対して直角に交叉
する平面として形成されている。また該面１０Ａａは、
スポーク部４Ａを中空にするための中子１７（図３に二
点鎖線で示す。）の巾木１７ａの入る巾木穴４Ａｅ・４
Ａｅの下縁４Ａｅ1・４Ａｅ1（以下「巾木穴の下縁のこ
とを巾木穴下縁４Ａｅ1という。」）と面一にされてい
る。Hub portion 2 and spoke portion 4A of wheel 1A
Of the partition wall 10A between the hub portion 2 and the spoke portion 4 in the portion 8 connecting with the surface 10Aa located on the side of the hollow 4Aa formed in the spoke portion 4A, the surface 10Aa shown in FIG.
As can be seen from the above, it is formed as a plane that intersects the center axis 16 of the spoke portion 4A (hereinafter referred to as "spoke center axis 16") at a right angle. Further, the surface 10Aa is
A skirting board hole 4Ae.4 into which the skirting board 17a of the core 17 (shown by a chain double-dashed line in FIG. 3) for hollowing the spoke portion 4A is inserted.
It is flush with the lower edge 4Ae 1 and 4Ae 1 of Ae (hereinafter, the lower edge of the baseboard hole is referred to as the lower edge 4Ae 1 of the baseboard hole).
【００１５】巾木穴４Ａｅ・４Ａｅは、図４に示すよう
に、その下縁４Ａｅ1が上縁４Ａｅ2よりも大きい縦長の
台形状をしている。したがって、中子１７に係る巾木１
７ａもその断面が同じ縦長の台形状をしている。なお、
巾木穴４Ａｅの形状は、これに限られることはなく円形
でも細長いトラック形状でもよいが、下方に行くに連れ
て大きくなる形状のものが好ましい。As shown in FIG. 4, the baseboard holes 4Ae and 4Ae have a vertically long trapezoidal shape in which the lower edge 4Ae 1 is larger than the upper edge 4Ae 2 . Therefore, the baseboard 1 for the core 17
7a also has a vertically long trapezoidal shape in cross section. In addition,
The shape of the skirting board hole 4Ae is not limited to this, and may be a circular shape or an elongated track shape, but a shape that becomes larger as it goes downward is preferable.
【００１６】しかして、このように構成されたホイール
１Ａにあっては、仕切壁１０Ａのうち、スポーク部４に
形成された中空４Ａａの側に位置する面１０Ａａをスポ
ーク中心軸１６に対して直角に交叉する平面に形成した
とともにスポーク部４Ａに係る中子の巾木穴下縁４Ａｅ
1と面一にしたので、巾木穴下縁４Ａｅ1と仕切壁１０Ａ
との間に段差ができなくなって、砂溜まりの形成を防止
できるので、従来技術において砂を排除するためにスポ
ーク部４の根元に形成していた孔を全く不要にすること
ができる。このため、当該部分における集中応力の問題
もない。In the wheel 1A thus constructed, the surface 10Aa of the partition wall 10A located on the side of the hollow 4Aa formed in the spoke portion 4 is perpendicular to the spoke center axis 16. The bottom edge 4Ae of the core hole of the core formed on the plane intersecting with the spoke portion 4A.
Since it is flush with 1, the bottom edge 4Ae 1 of the baseboard hole and the partition wall 10A
Since there is no step between them and the formation of a sand puddle can be prevented, the hole formed at the base of the spoke portion 4 for removing sand in the prior art can be completely eliminated. Therefore, there is no problem of concentrated stress in that portion.
【００１７】しかも、仕切壁１０Ａのうち、スポーク部
４Ａに形成された中空４Ａａの側に位置する面１０Ａａ
が平面であるので、図３で示すようにスポーク部４の幅
方向両端ＳとＳとを結ぶ線分Ｓ−Ｓ（面１０Ａａのスポ
ーク部４の幅方向における長さに相当するもの。）が、
従来の円弧形状をした仕切壁１０の場合と比して短くな
る。このためそれだけホイールの軽量化ができる。Moreover, a surface 10Aa of the partition wall 10A located on the side of the hollow 4Aa formed in the spoke portion 4A.
Is a plane, a line segment S-S (corresponding to the length of the surface 10Aa in the width direction of the spoke portion 4) connecting both ends S and S in the width direction of the spoke portion 4 as shown in FIG. ,
The length is shorter than that of the conventional partition wall 10 having an arc shape. Therefore, the weight of the wheel can be reduced accordingly.
【００１８】さらに、巾木穴４Ａｅをその下縁４Ａｅ1
が上縁４Ａｅ2よりも大きい縦長の台形状にしたので、
重力で自然と下方に溜まりがちな砂のかき出しが楽にで
きるようになる。したがって、これによっても砂の排除
ができるので、一層の砂溜まりの防止ができる。Further, the skirting hole 4Ae is provided with a lower edge 4Ae 1
Has a vertically long trapezoidal shape that is larger than the upper edge 4Ae 2 ,
Gravity makes it easier to scrape out sand, which tends to accumulate naturally downward. Therefore, since the sand can be removed also by this, further accumulation of sand can be prevented.
【００１９】[0019]
【発明の効果】本発明によれば、ホイールに砂溜まりが
できないようにできるとともに集中応力の問題もなく、
加えて一層の軽量にすることができる。According to the present invention, it is possible to prevent sand from accumulating in the wheel, and there is no problem of concentrated stress.
In addition, the weight can be further reduced.
【図１】本発明ホイール１Ａの正面図である。FIG. 1 is a front view of a wheel 1A of the present invention.
【図２】図１のII−II線断面図である。FIG. 2 is a sectional view taken along line II-II in FIG.
【図３】図２のIII−III線拡大断面図である。FIG. 3 is an enlarged sectional view taken along line III-III of FIG.
【図４】巾木穴４Ａｅの拡大正面図である。FIG. 4 is an enlarged front view of a skirting board hole 4Ae.
【図５】図５は従来の中空構造のホイールの正面図であ
る。FIG. 5 is a front view of a conventional wheel having a hollow structure.
【図６】図５のVI−VI線断面図である。6 is a sectional view taken along line VI-VI of FIG.
【図７】図６のVII−VII線拡大断面図である。7 is an enlarged sectional view taken along line VII-VII of FIG.
１Ａ ホイール ２ ハブ部 ４ スポーク部 ４ａ 中空（スポーク部８の） ４Ａｅ 巾木穴 ４Ａｅ1 巾木穴下縁 ４Ａｅ2 巾木穴上縁 ８ ハブ部とスポーク部とを結ぶ部分 １０Ａ 仕切壁 １０Ａａ スポーク部に形成された中空の側に位置する
面 １６ スポーク中心軸1A wheel 2 hub part 4 spoke part 4a hollow (of the spoke part 8) 4Ae baseboard hole 4Ae 1 bottom edge of baseboard hole 4Ae 2 top edge of baseboard hole 8 part connecting hub part and spoke part 10A partition wall 10Aa spoke part The surface located on the hollow side formed in 16 Spoke central axis
Claims (2)
部分における当該ハブ部とスポーク部との間の仕切壁の
うち、スポーク部に形成された中空の側に位置する面を
スポーク中心軸に対して直角に交叉する平面にするとと
もにスポーク部に係る中子の巾木穴下縁と面一にしたホ
イール。1. A surface of a partition wall between a hub portion and a spoke portion of a wheel connecting the hub portion and the spoke portion, which is located on a hollow side formed in the spoke portion, is defined as a spoke central axis. A wheel that has a flat surface that intersects at a right angle and is flush with the lower edge of the baseboard hole of the core related to the spokes.
に連れて大きく形成したことを特徴とする請求項１記載
のホイール。2. The wheel according to claim 1, wherein the skirting board hole is formed so as to become larger from the upper edge toward the lower edge side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6073385A JPH07276902A (en) | 1994-04-12 | 1994-04-12 | Cast wheel for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6073385A JPH07276902A (en) | 1994-04-12 | 1994-04-12 | Cast wheel for vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07276902A true JPH07276902A (en) | 1995-10-24 |
Family
ID=13516681
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6073385A Pending JPH07276902A (en) | 1994-04-12 | 1994-04-12 | Cast wheel for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07276902A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020164099A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Cast wheel |
-
1994
- 1994-04-12 JP JP6073385A patent/JPH07276902A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2020164099A (en) * | 2019-03-29 | 2020-10-08 | 本田技研工業株式会社 | Cast wheel |
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