JPH0472721B2 - - Google Patents
Info
- Publication number
- JPH0472721B2 JPH0472721B2 JP60009896A JP989685A JPH0472721B2 JP H0472721 B2 JPH0472721 B2 JP H0472721B2 JP 60009896 A JP60009896 A JP 60009896A JP 989685 A JP989685 A JP 989685A JP H0472721 B2 JPH0472721 B2 JP H0472721B2
- Authority
- JP
- Japan
- Prior art keywords
- axle
- diameter part
- large diameter
- hub
- needle bearing
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60B—VEHICLE WHEELS; CASTORS; AXLES FOR WHEELS OR CASTORS; INCREASING WHEEL ADHESION
- B60B27/00—Hubs
- B60B27/02—Hubs adapted to be rotatably arranged on axle
- B60B27/023—Hubs adapted to be rotatably arranged on axle specially adapted for bicycles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
Description
【発明の詳細な説明】
〔発明の技術分野〕
本発明は自動二輪車前輪の軸支構造に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a shaft support structure for a front wheel of a motorcycle.
自動二輪車の車輪には、ハブの片側をボール軸
受を介する一方、他側をニードル軸受を介して車
軸に支持するようにし、スラスト荷重を前記片側
のボール軸受だけで受けるようにしたものがあ
る。このような軸支構造にすると、ニードル軸受
によつて支持される側のハブ形状を小径化させる
ことができ、それによつて車輪を軽量化すること
ができるメリツトがある。
Some motorcycle wheels have one side of the hub supported by a ball bearing and the other side supported by an axle via a needle bearing, so that the thrust load is received only by the ball bearing on one side. With such a shaft support structure, the diameter of the hub supported by the needle bearing can be reduced, which has the advantage of reducing the weight of the wheel.
ところで、上記軸支構造では、ボール軸受のイ
ンナレースとニードル軸受のインナシエルとでは
内径が異なり、前者の内径は後者の内径よりも小
さくなつている。そのためニードル軸受は、車軸
にカラーを嵌合して、そのカラーの上に支持され
る構造にしてあり、またこのニードル軸受と他側
のボール軸受との間にはスペーサが介在されるよ
うになつていた。 By the way, in the above-described shaft support structure, the inner race of the ball bearing and the inner shell of the needle bearing have different inner diameters, and the inner diameter of the former is smaller than the inner diameter of the latter. Therefore, needle bearings have a structure in which a collar is fitted onto the axle and supported on top of the collar, and a spacer is interposed between the needle bearing and the ball bearing on the other side. was.
一方、車軸を必要な強度に維持しながら軽量化
するには、軸心部を中ぐりした中空構造にすれば
よい。しかし、上記車軸とカラーからなる二重の
軸支構造において強度を維持しながら軽量化する
場合には、車軸本体だけの中ぐりにとどまり、カ
ラーはそののままにせざるを得ないため、それ以
上の軽量化を図るには限界があつた。 On the other hand, in order to reduce the weight of the axle while maintaining the required strength, the axle can be made into a hollow structure by boring out the shaft center. However, in order to reduce the weight while maintaining the strength of the above-mentioned double shaft support structure consisting of the axle and collar, only the axle body must be bored, and the collar must remain as it is. There was a limit to how much weight could be reduced.
本発明の目的は、ボール軸受とニードル軸受に
よつてハブの両側をそれぞれ車軸に支持する車輪
において、高い強度を維持しながら車軸をさらに
軽量化することができる軸支構造を提供すること
にある。
An object of the present invention is to provide a shaft support structure that can further reduce the weight of the axle while maintaining high strength in a wheel that supports the axle on both sides of the hub using ball bearings and needle bearings. .
〔発明の構成〕
上記目的を達成する本発明は、左右一対の前フ
オークに車軸を固定し、この車軸に車輪のハブを
ニードル軸受と、このニードル軸受のニードルの
径よりも径の大きいボールを持つボール軸受を介
して回転自在に支持するようにした自動二輪車前
輪の軸支構造において、
前記車軸を太径部と細径部とが軸方向に一体形
成され、その太径部の肉厚を薄くする一方、細径
部の肉厚を前記太径部の肉厚よりも厚くした中空
の段付構造にし、前記細径部上の前記太径部との
段付位置に前記ボール軸受を配置してハブの片側
を支持し、また前記太径部にニードル軸受を配置
して前記ハブの他側を支持し、かつ前記細径部側
端部を前記一対の前フオークの一方に螺合固定
し、前記太径部側端部を前記一対の前フオークの
他方に締付け固定したことを特徴とするものであ
る。[Structure of the Invention] The present invention achieves the above object by fixing an axle to a pair of left and right front forks, attaching a wheel hub to the axle with a needle bearing, and a ball having a diameter larger than the diameter of the needle of the needle bearing. In a shaft support structure for a front wheel of a motorcycle that is rotatably supported via a ball bearing, the axle is formed integrally with a large diameter part and a small diameter part in the axial direction, and the wall thickness of the large diameter part is A hollow stepped structure is formed in which the thickness of the thin diameter part is made thicker than the thickness of the large diameter part, and the ball bearing is arranged on the narrow diameter part at a stepped position with respect to the large diameter part. to support one side of the hub, a needle bearing is disposed on the large diameter portion to support the other side of the hub, and the end of the narrow diameter portion is screwed and fixed to one of the pair of front forks. The large diameter portion side end portion is fastened and fixed to the other of the pair of front forks.
以下、本発明を図に示す実施例により説明す
る。
Hereinafter, the present invention will be explained with reference to embodiments shown in the drawings.
第１図において、１，１は自動二輪車の前フオ
ーク、２は前フオーク１，１の下端に固定された
車軸、３は車軸２に回転自在に支持された車輪
（前輪）である。車輪３はハブ４とスポーク５と
リム６から構成され、リム６にはタイヤ７が装着
されている。 In FIG. 1, 1, 1 is a front fork of a motorcycle, 2 is an axle fixed to the lower end of the front forks 1, 1, and 3 is a wheel (front wheel) rotatably supported by the axle 2. The wheel 3 is composed of a hub 4, spokes 5, and a rim 6, and a tire 7 is mounted on the rim 6.
第２，３図に詳細を示すように、上記車軸２
は、太径部２ａと細径部２ｂとが軸方向に一体に
形成された段付構造であり、軸心は中ぐりされて
空洞部２ｃを形成している。また、細径部２ｂの
肉厚は太径部２ａの肉厚よりも厚くなっている。
車軸２の細径部側端部にはネジ部８が設けられ、
太径部側端部には上記空洞部２ｃの開口端に六角
穴９が設けられている。上記ネジ部８は、六角穴
９に差し込んだ工具を回転させることにより、第
１図のように前フオーク１の一方の下端のボス部
１０に螺合固定され、また六角穴９側の端部は、
他方の前フオーク１の軸受部１１に締付け固定さ
れる。 As shown in detail in Figures 2 and 3, the axle 2
This is a stepped structure in which a large diameter portion 2a and a small diameter portion 2b are integrally formed in the axial direction, and the axial center is bored to form a hollow portion 2c. Further, the thickness of the small diameter portion 2b is greater than the thickness of the large diameter portion 2a.
A threaded portion 8 is provided at the narrow diameter side end of the axle 2,
A hexagonal hole 9 is provided at the open end of the cavity 2c at the end of the large diameter portion. By rotating a tool inserted into the hexagonal hole 9, the threaded portion 8 is screwed and fixed to the boss portion 10 at one lower end of the front fork 1, as shown in FIG. teeth,
It is tightened and fixed to the bearing part 11 of the other front fork 1.
上記車軸２の細径部２ｂはボール軸受１３を介
してハブ４の片側を支持し、太径部２ａはニード
ル軸受１２を介してハブ４の他側を支持してい
る。ハブ４がニードル軸受１２に支持された側
は、ボール軸受１３によつて支持された側よりも
細径に形成され、軽量化が図られている。また、
太径部２ａに配置されるニードル軸受１２に対し
て、ニードル軸受１２のニードルの径よりも径の
大きいボールをもつボール軸受１３は細径部２ｂ
に配置されているので、ハブ４の両側の径差を縮
小し、ハブ４の回転バランスを良好にするように
なっている。 The narrow diameter portion 2b of the axle 2 supports one side of the hub 4 via a ball bearing 13, and the large diameter portion 2a supports the other side of the hub 4 via a needle bearing 12. The side of the hub 4 supported by the needle bearing 12 is formed to have a smaller diameter than the side supported by the ball bearing 13, thereby reducing weight. Also,
In contrast to the needle bearing 12 arranged in the large diameter part 2a, the ball bearing 13 having balls with a diameter larger than the diameter of the needle of the needle bearing 12 is arranged in the small diameter part 2b.
, the diameter difference on both sides of the hub 4 is reduced, and the rotational balance of the hub 4 is improved.
太径部２ａ上のニードル軸受１２は、そのアウ
タシエル１２ａがハブ４の内壁に対しスラストワ
ツシヤ１４，１４に挟まれるように保持されてい
る。また、上記ハブ４側に支持されたスラストワ
ツシヤ１４，１４は、太径部２ａ上のインナシエ
ル１２ｂを軸方向に対し移動を規制している。１
５はオイルシールである。 The needle bearing 12 on the large diameter portion 2a is held such that its outer shell 12a is sandwiched between thrust washers 14, 14 against the inner wall of the hub 4. Further, the thrust washers 14, 14 supported on the hub 4 side restrict movement of the inner shell 12b on the large diameter portion 2a in the axial direction. 1
5 is an oil seal.
一方、細径部２ｂ上のボール軸受１３は、その
アウタレース１３ａがハブ４の内壁に対して圧入
され、軸方向への動きをＣ型クリツプ１６によつ
て規制されている。また、細径部２ｂ上のインナ
レース１３ｂは、内端を段付部２ｄに当接させる
と共に、外端をスペーサ１７によつて位置規制さ
れている。１８はオイルシールである。 On the other hand, the outer race 13a of the ball bearing 13 on the narrow diameter portion 2b is press-fitted into the inner wall of the hub 4, and its movement in the axial direction is restricted by a C-shaped clip 16. Further, the inner race 13b on the narrow diameter portion 2b has its inner end abutted against the stepped portion 2d, and its outer end is regulated in position by a spacer 17. 18 is an oil seal.
さて、従来の軸支構造によると、車軸２の太径
部２ａと細径部２ｂの差に相当する肉厚部分が、
別体のカラーになつている。したがつて、車軸２
の中ぐり空洞部は、細径部２ｂに相当する部分
に、強度を維持する上に必要な肉厚を残してしか
設けることができず、上記肉厚とカラー相当部分
は空洞にすることはできなかつた。しかし、上記
本発明の軸支構造によると、太径部２ａに対し
て、上記従来の細径部２ｂ相当部分に設けた以上
に大きな内径Ｄの中ぐり空洞部２ｃを設けること
ができる。そのため、車軸２の重量を従来構造に
比べて一層軽量化することができる。しかも、車
軸２は太径化によつて強度上からも一層有利にす
ることができる。 Now, according to the conventional shaft support structure, the thick part corresponding to the difference between the large diameter part 2a and the small diameter part 2b of the axle 2 is
It has a different color. Therefore, axle 2
The boring cavity can only be provided in the part corresponding to the narrow diameter part 2b, leaving a wall thickness necessary to maintain strength, and the above wall thickness and the part corresponding to the collar cannot be made hollow. I couldn't do it. However, according to the shaft support structure of the present invention, it is possible to provide the hollow portion 2c with a larger inner diameter D in the large diameter portion 2a than that provided in the portion corresponding to the conventional small diameter portion 2b. Therefore, the weight of the axle 2 can be further reduced compared to the conventional structure. Moreover, by increasing the diameter of the axle 2, it can be made even more advantageous in terms of strength.
本発明において、太径部２ａの肉厚を薄くする
一方で、細径部２ｂの肉厚を厚くすることによ
り、太径部２ａと細径部２ｂとの強度を互いに均
等にすると共に重量については軸方向左右のバラ
ンスをとるため操縦性を向上することができる。
また、車軸２の細径部側端部を片側の前フオーク
１に螺合固定する一方で、太径部２ａはその半径
が大きいことによつて小さな締付け力でも固定可
能な締付け固定にしたので、車軸２を前フオーク
１に簡単かつ強固に固定することができる。 In the present invention, by making the wall thickness of the large diameter part 2a thin while increasing the wall thickness of the small diameter part 2b, the strength of the large diameter part 2a and the small diameter part 2b can be made equal to each other, and the weight can be reduced. can improve maneuverability because it balances the left and right sides in the axial direction.
In addition, while the narrow diameter side end of the axle 2 is screwed and fixed to the front fork 1 on one side, the large diameter part 2a has a large radius so that it can be fixed with a small tightening force. , the axle 2 can be easily and firmly fixed to the front fork 1.
上述したように、本発明は、左右一対の前フオ
ークに車軸を固定し、この車軸に車輪のハブをニ
ードル軸受と、このニードル軸受のニードルの径
よりも径の大きいボールをもつボール軸受を介し
て回転自在に支持するようにした自動二輪車前輪
の軸支構造において、
前記車軸を太径部と細径部とが軸方向に一体形
成された中空の段付構造にし、前記細径部上の前
記太径部との段差位置に前記ボール軸受を配置し
てハブの片側を支持し、また前記太径部にニード
ル軸受を配置して前記ハブの他側を支持したの
で、太径化によつて車軸強度を一層有利にし、し
かも中ぐり空洞部を大きくすることができるた
め、車軸を一層軽量化することができる。更に本
発明では、太径部の肉厚を薄くする一方で細径部
の肉厚をこれよりも厚くしたため、太径部と細径
部との強度をほぼ均等にすると共に、左右の重量
バランスをとることができ、操縦性を向上するこ
とができる。また、前フオークに対する車軸の取
付けも細径部側端部を螺合固定する一方で、太径
部側端部を締めつけ固定することにより簡単かつ
強固に行うことができる。
As described above, in the present invention, an axle is fixed to a pair of left and right front forks, and a wheel hub is attached to the axle via a needle bearing and a ball bearing having a ball having a diameter larger than the diameter of the needle of the needle bearing. In the shaft support structure for a front wheel of a motorcycle, the axle has a hollow stepped structure in which a large diameter part and a small diameter part are integrally formed in the axial direction, and The ball bearing is arranged at a step position with respect to the large diameter part to support one side of the hub, and the needle bearing is arranged in the large diameter part to support the other side of the hub. As a result, the strength of the axle can be made even more advantageous, and the boring cavity can be made larger, so that the weight of the axle can be further reduced. Furthermore, in the present invention, the wall thickness of the large diameter part is made thinner, while the wall thickness of the small diameter part is made thicker, so that the strength of the large diameter part and the small diameter part are made almost equal, and the weight balance between the left and right sides is improved. It is possible to improve maneuverability. Furthermore, the axle can be easily and firmly attached to the front fork by screwing and fixing the narrow-diameter side end and tightening and fixing the large-diameter side end.
第１図は本発明による軸支構造を有する自動二
輪車の前輪部分を一部破断して要部のみ示す正面
図、第２図は同軸支構造の車軸とハブとの部分を
示す縦断面図、第３図は第２図の矢視図であ
る。
２……車軸、２ａ……太径部、２ｂ……細径
部、３……車輪、４……ハブ、１２……ニードル
軸受、１３……ボール軸受。
FIG. 1 is a partially cutaway front view of the front wheel of a motorcycle having a shaft support structure according to the present invention, showing only the essential parts; FIG. 2 is a longitudinal sectional view showing the axle and hub of the coaxial support structure; FIG. 3 is a view taken along the arrows in FIG. 2... Axle, 2a... Large diameter portion, 2b... Small diameter portion, 3... Wheel, 4... Hub, 12... Needle bearing, 13... Ball bearing.
Claims (1)
車軸に車輪のハブをニードル軸受と、このニード
ル軸受のニードルの径よりも径の大きいボールを
持つボール軸受を介して回転自在に支持するよう
にした自動二輪車前輪の軸支構造において、 前記車軸を太径部と細径部とが軸方向に一体形
成され、その太径部の肉厚を薄くする一方、細径
部の肉厚を前記太径部の肉厚よりも厚くした中空
の段付構造にし、前記細径部上の前記太径部との
段付位置に前記ボール軸受を配置してハブの片側
を支持し、また前記太径部にニードル軸受を配置
して前記ハブの他側を支持し、かつ前記細径部側
端部を前記一対の前フオークの一方に螺合固定
し、前記太径部側端部を前記一対の前フオークの
他方に締付け固定したことを特徴とする自動二輪
車前輪の軸支構造。[Claims] 1. An axle is fixed to a pair of left and right forks in front, and a wheel hub is rotated on this axle via a needle bearing and a ball bearing having a ball with a diameter larger than the diameter of the needle of this needle bearing. In a shaft support structure for a front wheel of a motorcycle that supports freely, the axle is formed integrally with a large diameter part and a small diameter part in the axial direction, and the wall thickness of the large diameter part is made thin, while the thickness of the small diameter part is reduced. A hollow stepped structure is formed in which the wall thickness of the hub is thicker than that of the large diameter part, and the ball bearing is arranged on the small diameter part at a stepped position with the large diameter part to support one side of the hub. Further, a needle bearing is disposed on the large diameter portion to support the other side of the hub, and the end on the narrow diameter portion side is screwed and fixed to one of the pair of front forks, and the large diameter portion side A shaft support structure for a front wheel of a motorcycle, characterized in that an end portion is fastened and fixed to the other of the pair of front forks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP989685A JPS61169301A (en) | 1985-01-24 | 1985-01-24 | Axle support structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP989685A JPS61169301A (en) | 1985-01-24 | 1985-01-24 | Axle support structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61169301A JPS61169301A (en) | 1986-07-31 |
| JPH0472721B2 true JPH0472721B2 (en) | 1992-11-19 |
Family
ID=11732884
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP989685A Granted JPS61169301A (en) | 1985-01-24 | 1985-01-24 | Axle support structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61169301A (en) |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US12102815B2 (en) | 2019-09-25 | 2024-10-01 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible pump housings |
| US12121713B2 (en) | 2019-09-25 | 2024-10-22 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible blood conduits |
| US12161857B2 (en) | 2018-07-31 | 2024-12-10 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US12220570B2 (en) | 2018-10-05 | 2025-02-11 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US12409310B2 (en) | 2019-12-11 | 2025-09-09 | Shifamed Holdings, Llc | Descending aorta and vena cava blood pumps |
| US12465748B2 (en) | 2019-08-07 | 2025-11-11 | Supira Medical, Inc. | Catheter blood pumps and collapsible pump housings |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS586789Y2 (en) * | 1977-09-01 | 1983-02-05 | ヤマハ発動機株式会社 | Motorcycle hub drive plate holding structure |
-
1985
- 1985-01-24 JP JP989685A patent/JPS61169301A/en active Granted
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US11185677B2 (en) | 2017-06-07 | 2021-11-30 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11717670B2 (en) | 2017-06-07 | 2023-08-08 | Shifamed Holdings, LLP | Intravascular fluid movement devices, systems, and methods of use |
| US11511103B2 (en) | 2017-11-13 | 2022-11-29 | Shifamed Holdings, Llc | Intravascular fluid movement devices, systems, and methods of use |
| US11229784B2 (en) | 2018-02-01 | 2022-01-25 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US10722631B2 (en) | 2018-02-01 | 2020-07-28 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use and manufacture |
| US12161857B2 (en) | 2018-07-31 | 2024-12-10 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US12220570B2 (en) | 2018-10-05 | 2025-02-11 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of use |
| US11964145B2 (en) | 2019-07-12 | 2024-04-23 | Shifamed Holdings, Llc | Intravascular blood pumps and methods of manufacture and use |
| US11654275B2 (en) | 2019-07-22 | 2023-05-23 | Shifamed Holdings, Llc | Intravascular blood pumps with struts and methods of use and manufacture |
| US12465748B2 (en) | 2019-08-07 | 2025-11-11 | Supira Medical, Inc. | Catheter blood pumps and collapsible pump housings |
| US11724089B2 (en) | 2019-09-25 | 2023-08-15 | Shifamed Holdings, Llc | Intravascular blood pump systems and methods of use and control thereof |
| US12121713B2 (en) | 2019-09-25 | 2024-10-22 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible blood conduits |
| US12102815B2 (en) | 2019-09-25 | 2024-10-01 | Shifamed Holdings, Llc | Catheter blood pumps and collapsible pump housings |
| US12409310B2 (en) | 2019-12-11 | 2025-09-09 | Shifamed Holdings, Llc | Descending aorta and vena cava blood pumps |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS61169301A (en) | 1986-07-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |