JP3080214B2 - Bicycle hub - Google Patents
Bicycle hubInfo
- Publication number
- JP3080214B2 JP3080214B2 JP08142187A JP14218796A JP3080214B2 JP 3080214 B2 JP3080214 B2 JP 3080214B2 JP 08142187 A JP08142187 A JP 08142187A JP 14218796 A JP14218796 A JP 14218796A JP 3080214 B2 JP3080214 B2 JP 3080214B2
- Authority
- JP
- Japan
- Prior art keywords
- spoke
- collar
- hub
- sprocket
- hole
- 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 - Fee Related
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M9/00—Transmissions characterised by use of an endless chain, belt, or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Gears, Cams (AREA)
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、自転車用ハブに関
する。更に詳しくは、ハブつばに形成されスポークが挿
入される３つの連続した孔で構成された引掛け穴を用い
ないで、一つの孔である通し穴のみを用いたものであっ
ても車輪の組立て時にスポークが干渉しない構造の自転
車用ハブに関する。The present invention relates to a bicycle hub. More specifically, the assembly of the wheel does not use the hook holes formed in the hub brim and formed of three continuous holes into which the spokes are inserted, but uses only one through hole as a hole. The present invention relates to a bicycle hub having a structure that does not sometimes interfere with spokes.
【０００２】[0002]
【従来の技術】自転車用のハブは、車輪の受ける静的動
的負荷に耐え、車輪に軽快で円滑な回転を与える機能を
持っているものである。スポークは、一般に車輪の周縁
リム部と中心ハブ部とを放射状に連結する線状部をい
う。スポークは、一端にハブつばのスポーク穴に引っ掛
けるフック部、他端にねじ部を形成したスポーク線と、
リムのスポーク穴を通してスポーク線のねじ部にはめあ
い、スポーク線を締め付け調整固定するニップルとから
成る。2. Description of the Related Art A bicycle hub has a function of withstanding a static dynamic load applied to a wheel and giving a light and smooth rotation to the wheel. A spoke generally refers to a linear portion that radially connects a peripheral rim portion of a wheel and a central hub portion. The spoke has a hook part hooked into the spoke hole of the hub brim at one end, and a spoke line formed with a screw part at the other end,
A nipple that fits into the thread of the spoke wire through the spoke hole of the rim and tightens and adjusts the spoke wire.
【０００３】ハブ体のつばには、スポークを挿入し保持
するスポーク穴が開けられている。スポーク穴には１つ
の孔からなる通し穴（丸穴）、３つの連続した孔で構成
された引掛け穴の２種類がある。引掛け穴はフリーホイ
ールを取り外さずに組立てた状態でスポークの交換がで
きる利点がある。しかしながら、乱暴に乗ったり、衝突
などした場合、リムが歪みスポークの引掛け部が引掛け
穴から外れることがある。[0003] A spoke hole for inserting and holding a spoke is formed in a flange of the hub body. There are two types of spoke holes, a through hole (round hole) formed of one hole and a hook hole formed of three continuous holes. The hook holes have the advantage that the spokes can be exchanged in the assembled state without removing the freewheel. However, if the rider violently rides or collides, the rim may be distorted and the hook of the spoke may come off the hook hole.
【０００４】また、引掛け穴は組立て時にスポークを挿
入しても中心の孔から、スポークの引掛け部が外れるこ
とがあるので、この中心の孔に詰め物をすることもあ
る。組立て完了後、この詰め物を取り除く作業も必要に
なる。このため可能な限り引掛け穴の使用は避けた方が
良い。[0004] In addition, since the hooked portion of the spoke may come off from the center hole of the hook hole even if the spoke is inserted during assembly, the center hole may be filled. After the assembly is completed, it is necessary to remove the padding. For this reason, it is better to avoid using hook holes as much as possible.
【０００５】引掛け穴の使用を避け、フリーホイールを
取り外さずに組立てた状態でスポークの交換ができるハ
ブ構造が望ましい。[0005] It is desirable to have a hub structure in which the spokes can be exchanged in an assembled state without removing the freewheel by avoiding the use of the hook holes.
【０００６】[0006]
【発明が解決しようとする課題】本発明は、以上のよう
な技術背景で発明されたものであり、次の目的を達成す
る。SUMMARY OF THE INVENTION The present invention has been invented in the above technical background and achieves the following objects.
【０００７】本発明の目的は、車輪の組立て時にハブ体
に設けた１つの孔からなる通し穴でスポークとスプロケ
ットが干渉しない自転車用ハブを提供することにある。SUMMARY OF THE INVENTION It is an object of the present invention to provide a bicycle hub in which spokes and sprockets do not interfere with each other through a single through hole formed in a hub body when a wheel is assembled.
【０００８】[0008]
【課題を解決するための手段】本発明は上記課題を達成
するために、次のような手段を採る。The present invention employs the following means to achieve the above object.
【０００９】すなわち本発明は、ハブの中心を貫通して
通されたハブ軸と、前記ハブ軸の外周に軸受で回転自在
に支持され、平行に配置され、かつ略円形状のスポーク
通し穴をもった第１つば及び第２つばを連結するパイプ
からなるハブ体と、前記ハブ体に一方向のチェーンの回
転力のみを伝える１枚のスプロケットと、車輪の組立て
のために前記第１つばの前記スポーク通し穴にスポーク
を前記スプロケット側から挿入するとき、前記スプロケ
ットを取り外すことなく組み込めるように前記スプロケ
ットの歯の歯底を前記スプロケットの半径方向に、前記
スプロケットに前記スポークが干渉しないように前記ス
ポークの直径以上の大きさの幅を有する切欠いたスポー
ク挿入切欠きとを備えた自転車用ハブにおいて、前記ス
ポークの先端が前記第２つばの外周面と前記第１つばの
前記通し穴に接したとき、前記ハブ軸の中心線と前記ス
ポークの中心線と成す角度θは、近似的に次のような関
係にある Ｒ3≦Ｒ4−（Ｈ1＋Ｈ2）・ｔａｎθ ｔａｎθ＝（Ｒ4−（Ｒ5−ｄ））／Ｈ1 ただし、 Ｒ3は、前記スポーク挿入切欠きの歯底円の半径 Ｒ4は、前記第２つばの外周の半径 Ｒ5は、前記第１つばの前記スポーク通し穴の内周面の
最大半径 Ｈ1は、前記第１つばと前記第２つばの間隔 Ｈ2は、前記第１つばと前記スプロケットとの間の前記
ハブ軸の軸線方向間隔 ことを特徴とする自転車用ハブである。That is, the present invention provides a hub shaft that passes through the center of a hub, and a spoke through hole that is rotatably supported by a bearing on the outer periphery of the hub shaft, is disposed in parallel, and has a substantially circular shape. A hub body consisting of a pipe connecting the first and second collars, a single sprocket for transmitting only the rotational force of the chain in one direction to the hub body, and a first sprocket for assembling wheels. When a spoke is inserted into the spoke through hole from the sprocket side, the tooth bottom of the sprocket tooth is set in the radial direction of the sprocket so that the sprocket can be assembled without removing the sprocket, and the spoke does not interfere with the sprocket. A bicycle hub having a notched spoke insertion notch having a width at least as large as the diameter of the spoke. When in contact with the through hole of the outer peripheral surface and the first flange of the second flange, the angle between the hub axis center line of the center line of the spoke θ is in approximately the following relationship R 3 ≦ R 4 − (H 1 + H 2 ) · tan θ tan θ = (R 4 − (R 5 −d)) / H 1 where R 3 is the radius of the root circle of the spoke insertion notch, and R 4 is the above. radius R 5 of the outer periphery of the second flange, the maximum radius H 1 inner peripheral surface of the spoke through hole of the first collar, wherein the first flange spacing of H 2 second collar, said first collar An axial distance between the hub axle and the sprocket.
【００１０】[0010]
【００１１】[0011]
【発明の実施の形態】本発明の実施の形態を図面を参照
しながら以下に説明する。図１は本発明の実施の形態で
ある自転車用ハブの正面図である。フリー小ギヤ付きユ
ニットハブと呼ばれるものに本発明を適用した実施の形
態である。フリー小ギヤ付きユニットハブ１の中心に
は、両端におネジが形成されたハブ軸２が貫通して配置
されている。ハブ軸２の中心部の外周にはパイプ３が隙
間をもって配置されている。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a front view of a bicycle hub according to an embodiment of the present invention. This is an embodiment in which the present invention is applied to what is called a unit hub with a free small gear. At the center of the unit hub 1 with the free small gear, a hub shaft 2 having threads formed at both ends is disposed so as to pass therethrough. A pipe 3 is arranged on the outer periphery of the center portion of the hub shaft 2 with a gap.
【００１２】パイプ３の両端にはつば４，５が一体にな
るように固定され、パイプ３及びつば４，５でハブ体６
を構成する。本実施の形態１のハブ体６の内部は、規格
化された公知の構造でありその説明は省略する。つば５
の側面にはフリー小ギヤ７が配置されている。フリー小
ギヤ７には円筒部８が一体に形成されている。円筒部８
の内部には公知の鋼球による軸受、フリーホイール機構
等を内蔵している。Collars 4 and 5 are fixed to both ends of the pipe 3 so as to be integral with each other.
Is configured. The inside of the hub body 6 according to the first embodiment has a standardized known structure, and a description thereof will be omitted. Spit 5
A free small gear 7 is arranged on the side surface of the. The cylindrical portion 8 is formed integrally with the free small gear 7. Cylindrical part 8
A well-known steel ball bearing, a freewheel mechanism, and the like are built in the inside of the device.
【００１３】フリーホイール機構は、チェーンの一方向
の回転力のみを伝える機能であり、ラチェット機構等の
ワンウエイクラッチを備えている。本実施の形態１に使
用されているこれらの機構は公知であり、かつ規格化さ
れたものであるので構造の説明は省略する。The freewheel mechanism has a function of transmitting only a rotational force in one direction of the chain, and has a one-way clutch such as a ratchet mechanism. These mechanisms used in the first embodiment are publicly known and standardized, and therefore the description of the structure is omitted.
【００１４】フリー小ギヤ７は、ねじ蓋９で固定されて
いる。ハブ体６は、軸受を構成する鋼球（図示せず）に
よりハブ軸２に回転自在に支持されており、鋼球は玉押
し１０，１１により押されて保持されている。玉押し１
０，１１はロックナット１２，１３によりハブ軸２にロ
ックされている。つば４，５の外周には、通し穴（丸
穴）１４，１５が等角度位置に開けられ、配置されてい
る。The free small gear 7 is fixed by a screw cover 9. The hub body 6 is rotatably supported on the hub shaft 2 by steel balls (not shown) constituting a bearing, and the steel balls are pushed and held by ball pushes 10 and 11. Cone 1
Reference numerals 0 and 11 are locked to the hub shaft 2 by lock nuts 12 and 13. Through holes (round holes) 14 and 15 are formed in the outer circumferences of the flanges 4 and 5 at equal angular positions.
【００１５】通し穴（丸穴）１４，１５は、貫通する孔
を有し、孔の両端が面取りされている１個からなる孔で
ある。本実施の形態の通し穴（丸穴）１４，１５は、つ
ば４，５の外周等角度位置に本実施の形態１ではそれぞ
れ１８個配置されている。フリー小ギヤ７のスプロケッ
ト１６は従来のものと形状が相違する。図２は図１の右
側面図である。The through-holes (round holes) 14 and 15 each have a penetrating hole, and are formed as one hole with both ends chamfered. In the first embodiment, eighteen through holes (round holes) 14 and 15 in the present embodiment are arranged at equal angular positions on the outer circumferences of the flanges 4 and 5, respectively. The sprocket 16 of the free small gear 7 has a different shape from the conventional sprocket. FIG. 2 is a right side view of FIG.
【００１６】図３は、スプロケット１６の歯形の拡大図
である。本実施の形態１のスプロケット１６は、歯数が
１４個の例である。スプロケット１６には、角度１２０
度の間隔で歯底２１にスポーク挿入切欠き２０が形成さ
れている。スポーク挿入切欠き２０が形成されていない
歯底２１には、半径ｒ1 の曲面２２で形成されている。
曲面２２は歯底円Ｒ2 に接している。この曲面２２に連
続して半径ｒ2 の歯面２３が形成されて歯先２４を構成
する。歯先２４は歯先円Ｒ1 に接している。FIG. 3 is an enlarged view of a tooth profile of the sprocket 16. The sprocket 16 of the first embodiment is an example having 14 teeth. The sprocket 16 has an angle 120
Spoke insertion notches 20 are formed in the tooth bottom 21 at intervals of degrees. The tooth bottom 21 where the spoke insertion notch 20 is not formed is formed with a curved surface 22 having a radius r 1 .
Curved portions 22 is in contact with the root circle R 2. A tooth surface 23 having a radius r 2 is formed continuously from the curved surface 22 to form a tooth tip 24. Addendum 24 is in contact with the addendum circle R 1.
【００１７】スポーク挿入切欠き２０は、歯面２３に連
続して平面２６が形成され、その境目は交線２５を成し
ている。平面２６に連続して半径ｒ3 の円弧面２７が形
成され、平面２６は円弧面２７の接面を成す。円弧面２
７は、切り欠き歯底円Ｒ3 に接している。同様に、円弧
面２７に連続して、平面２６、交線２５、歯面２３が形
成されている。なお、平面２６は半径方向と角度θ1 を
成している。The spoke insertion notch 20 has a flat surface 26 formed continuously with the tooth surface 23, and the boundary between the notches 20 forms an intersection line 25. An arc surface 27 having a radius r 3 is formed continuously with the plane 26, and the plane 26 forms a tangent surface of the arc surface 27. Arc surface 2
7 is in contact notch root circle R 3. Similarly, a plane 26, an intersection line 25, and a tooth surface 23 are formed continuously with the arc surface 27. Note that the plane 26 forms an angle θ 1 with the radial direction.
【００１８】結局、スプロケット１６の３箇所のスポー
ク挿入切欠き２０は、歯底円Ｒ2 と切り欠き歯底円Ｒ3
の差分ｈだけ切り欠いてあることになる。スポーク挿入
切欠き２０の間隔（幅）は、概ねスポーク３０の引掛け
部３１（図４参照）の直径より大きくなければ、後記の
ような組立方法をとる場合に引掛け部３１が通過できな
い。As a result, the three spoke insertion notches 20 of the sprocket 16 have the root circle R 2 and the notch root circle R 3.
Is cut out by the difference h. Unless the interval (width) between the spoke insertion notches 20 is generally larger than the diameter of the hook portion 31 (see FIG. 4) of the spoke 30, the hook portion 31 cannot pass when the assembling method described later is employed.
【００１９】組立方法 フリー小ギヤ付きユニットハブ１に、スポーク３０を組
み立てる方法を前記実施の形態の場合について説明す
る。図４は、スポーク３０をつば５に外側から挿入する
ときの一部断面図である。タンジェントスポーク車輪の
組み方には種々の方法が知られているが、通常つば５の
左右（板厚の両側）から交互にスポーク３０のねじ部３
２から先に挿入され、引掛け部３１で通し穴１４に固定
される。 Assembling Method A method of assembling the spoke 30 to the unit hub 1 with the free small gear will be described in the case of the above embodiment. FIG. 4 is a partial cross-sectional view when the spoke 30 is inserted into the collar 5 from outside. Various methods are known for assembling the tangent spoke wheel. Usually, the threaded portion 3 of the spoke 30 is alternately provided from the left and right sides (both sides of the plate thickness) of the collar 5.
2 and is fixed to the through hole 14 by the hook portion 31.
【００２０】つば４の左右方向からスポーク３０を通す
ことは干渉するものがないので問題はない。しかしなが
ら、つば５の右方向（図示上）からスポーク３０を挿入
するとき、スプロケット７の歯底２１を貫通させてつば
５の通し穴１４に挿入してもその歯底２１が干渉して挿
入できない。There is no problem in passing the spokes 30 from the left and right directions of the collar 4 because there is no interference. However, when the spokes 30 are inserted from the right side (on the illustration) of the collar 5, even if the spokes 21 are inserted through the tooth bottoms 21 of the sprocket 7 and inserted into the through holes 14 of the collar 5, the tooth roots 21 interfere and cannot be inserted. .
【００２１】すなわち、スポーク３０の先端がつば４の
外周面と通し穴１４に接したとき、ハブ軸２の中心線と
スポーク３０の中心線と成す角度はθである。すなわ
ち、スポーク３０の直径ｄと通し穴１４とは径の大きさ
が異なるので、遊びがあり実際は通し穴１４の内周面
で、かつ前記ハブ軸２の中心からの最大半径Ｒ5 の位置
で、スポーク３０の外周面と通し穴１４とは接する。That is, when the tip of the spoke 30 contacts the outer peripheral surface of the flange 4 and the through hole 14, the angle formed between the center line of the hub shaft 2 and the center line of the spoke 30 is θ. That is, since the diameter d of the spoke 30 and the diameter of the through hole 14 are different from each other, there is play, and the spoke 30 is actually located on the inner peripheral surface of the through hole 14 and at the position of the maximum radius R 5 from the center of the hub shaft 2. The outer peripheral surface of the spoke 30 contacts the through hole 14.
【００２２】したがって、角度θは、つば４とつば５と
の間隔Ｈ1 、つば４の外周の半径Ｒ4 、つば５の通し穴
１４の半径Ｒ5 の関係で決まる。また、つば５とスプロ
ケット７との間隔Ｈ2 とすれば、スポーク挿入切欠き２
０の歯底円の半径Ｒ3 は近似的に Ｒ3 ≦Ｒ4 −（Ｈ1 ＋Ｈ2 ）・ｔａｎθ ｔａｎθ＝（Ｒ4 −（Ｒ5 −ｄ））／Ｈ1 の関係にあればスポーク３０はスプロケット７に干渉し
ないことがわかる。[0022] Therefore, the angle theta, the interval H 1 between the flange 4 and collar 5, the radius R 4 of the outer circumference of the collar 4, is determined by the relationship between the radius R 5 of the through hole 14 of the flange 5. Further, if the spacing of H 2 and collar 5 and the sprocket 7,-out the spoke inserting cutouts 2
The radius R 3 of the root circle of 0 is approximately 30 if the relation of R 3 ≦ R 4 − (H 1 + H 2 ) · tan θ tan θ = (R 4 − (R 5 −d)) / H 1 is satisfied. Does not interfere with the sprocket 7.
【００２３】Ｒ5 は、つば５の通し穴１４の内周面の最
大半径 Ｈ1 は、つば４とつば５の間隔 Ｈ2 は、つば５とスプロケット７との間のハブ軸の軸線
方向間隔 なお、前記関係式は、前記実施の形態の構造の自転車用
ハブに適用した場合であって、必ずしも他の異なる構造
の自転車用ハブに適用できるものではない。また、実用
的には現在使用されているスポーク３０の直径ｄの最小
の直径は１．６ｍｍである。したがって、少なくとも直
径１．６ｍｍ以上のスポーク３０が通る程度の大きさの
スポーク挿入切欠き２０を形成することが望ましい。す
なわち、スポーク挿入切欠き２０の大きさは（約半径ｒ
3 の２倍）、スポーク３０の直径ｄの１．６ｍｍ以上、
好ましくはスポーク３０の引掛け部の直径より大きく形
成したものが良い。R 5 is the maximum radius of the inner peripheral surface of the through hole 14 of the collar 5, H 1 is the distance between the collar 4 and the collar 5 H 2 is the axial distance of the hub shaft between the collar 5 and the sprocket 7. Note that the above relational expression is applied to a bicycle hub having the structure of the embodiment, and is not necessarily applicable to a bicycle hub having another different structure. In practice, the minimum diameter d of the spoke 30 currently used is 1.6 mm. Therefore, it is desirable to form the spoke insertion notch 20 large enough to allow the spoke 30 having a diameter of at least 1.6 mm to pass through. That is, the size of the spoke insertion notch 20 is (about radius r
3 times), 1.6 mm or more of the diameter d of the spoke 30,
Preferably, the diameter of the hook 30 is larger than the diameter of the hook.
【００２４】以上詳記したように、スポーク挿入切欠き
２０を貫通させて、つば５の通し穴１４にスポーク３０
をスプロケット７に干渉させることなく挿入できる。As described in detail above, the spoke insertion notch 20 is made to penetrate, and the spoke 30 is inserted into the through hole 14 of the collar 5.
Can be inserted without interfering with the sprocket 7.
【００２５】[0025]
【その他の実施の形態】前記発明の実施の形態では、ス
ポーク３０を曲げないで組み立てするものであった。し
かしながら、スポーク３０は、鋼、ステンレス鋼等の弾
性材料で作られているものであるから塑性変形しない程
度であれば、弾性変形の範囲で曲げながら通し穴１４に
挿入し組み立て可能である。この場合、前記スポーク挿
入切欠き２０の歯底円の半径Ｒ3 は、スプロケット１６
の歯底円の半径Ｒ2 より小さい値であれば良い。[Other Embodiments] In the embodiment of the present invention, the spokes 30 are assembled without bending. However, since the spokes 30 are made of an elastic material such as steel or stainless steel, the spokes 30 can be inserted into the through holes 14 while being bent within the range of elastic deformation as long as they are not plastically deformed. In this case, the radius R 3 of the root circle of the spoke insertion notch 20 is equal to the sprocket 16.
It may be a radius R 2 is smaller than value of the root circle.
【００２６】この場合、スポーク３０を通し穴１４に挿
入しにくいが、スポーク３０を若干弾性変形させて曲げ
るだけで良いので、スポーク挿入切欠き２０を形成しな
いより組み立てが容易である。In this case, it is difficult to insert the spokes 30 into the through holes 14, but it is only necessary to slightly deform the spokes 30 and bend them. Therefore, the assembly is easier than forming the spoke insertion notch 20.
【００２７】前記実施の形態のスポーク挿入切欠き２０
は、３箇所に設けたものであったが前記実施の形態の説
明から理解されるように最低１箇所に配置しても良い。
また、前記実施の形態は、ユニットハブのフリー小ギヤ
付きに適用されたものであったが、多段小ギヤ用タイプ
等の公知の他のタイプのハブにも適用できる。The spoke insertion notch 20 of the above embodiment
Are provided in three places, but may be provided in at least one place as understood from the description of the above embodiment.
In the above embodiment, the unit hub is applied with a free small gear. However, the present invention can be applied to other known types of hubs such as a multi-stage small gear type.
【００２８】[0028]
【発明の効果】以上詳記したように、本発明の自転車用
ハブは、スポーク挿入切欠きをスプロケットに形成した
のでバンドドラムやフリーホイール等の干渉するものを
取り外さずに組立てた状態でスポークの組立て、交換を
スポークを曲げることなくできる効果がある。As described above in detail, the bicycle hub of the present invention has the spoke insertion notch formed in the sprocket, so that the spokes can be assembled without removing the interference such as the band drum and the freewheel. There is an effect that assembly and replacement can be performed without bending the spokes.
【図１】図１は、本発明の実施の形態１である自転車用
ハブの正面図である。FIG. 1 is a front view of a bicycle hub according to a first embodiment of the present invention.
【図２】図２は、図１の右側面図である。FIG. 2 is a right side view of FIG. 1;
【図３】図３は、スプロケットの歯形の拡大図である。FIG. 3 is an enlarged view of a sprocket tooth profile.
【図４】図４は、スポークをつばに外側から挿入すると
きの一部断面図である。FIG. 4 is a partial cross-sectional view when a spoke is inserted into a collar from the outside.
１…フリー小ギヤ付きユニットハブ ２…ハブ軸 ３…パイプ ４…つば ５…つば ７…スプロケット １４…通し穴 １６…スプロケット ２０…スポーク挿入切欠き ３０…スポーク DESCRIPTION OF SYMBOLS 1 ... Unit hub with a free small gear 2 ... Hub shaft 3 ... Pipe 4 ... Collar 5 ... Collar 7 ... Sprocket 14 ... Through hole 16 ... Sprocket 20 ... Spoke insertion notch 30 ... Spoke
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B60B 1/04 B60B 27/00 B60B 27/04 ──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. 7 , DB name) B60B 1/04 B60B 27/00 B60B 27/04
Claims (1)
配置され、かつ略円形状のスポーク通し穴をもった第１
つば及び第２つばを連結するパイプからなるハブ体と、 前記ハブ体に一方向のチェーンの回転力のみを伝える１
枚のスプロケットと、 車輪の組立てのために前記第１つばの前記スポーク通し
穴にスポークを前記スプロケット側から挿入するとき、
前記スプロケットを取り外すことなく組み込めるように
前記スプロケットの歯の歯底を前記スプロケットの半径
方向に、前記スプロケットに前記スポークが干渉しない
ように前記スポークの直径以上の大きさの幅を有する切
欠いたスポーク挿入切欠きとを備えた自転車用ハブにお
いて、前記スポークの先端が前記第２つばの外周面と前記第１
つばの前記通し穴に接したとき、前記ハブ軸の中心線と
前記スポークの中心線と成す角度θは、近似的に次のよ
うな関係にある Ｒ 3 ≦Ｒ 4 −（Ｈ 1 ＋Ｈ 2 ）・ｔａｎθ ｔａｎθ＝（Ｒ 4 −（Ｒ 5 −ｄ））／Ｈ 1 ただし、 Ｒ 3 は、前記スポーク挿入切欠きの歯底円の半径 Ｒ 4 は、前記第２つばの外周の半径 Ｒ 5 は、前記第１つばの前記スポーク通し穴の内周面の
最大半径 Ｈ 1 は、前記第１つばと前記第２つばの間隔 Ｈ 2 は、前記第１つばと前記スプロケットとの間の前記
ハブ軸の軸線方向間隔 ことを特徴とする自転車用ハブ。1. A hub shaft passing through the center of a hub, and a hub shaft rotatably supported by bearings on the outer periphery of the hub shaft, arranged in parallel, and having a substantially circular spoke through hole . 1
A hub body comprising a pipe which connects the collar and the second collar, Ru convey only the rotation force in one direction of the chain to the hub body 1
When inserting a spoke from the sprocket side into the spoke through hole of the first flange for assembling a wheel,
Inserting a notched spoke having a width equal to or larger than the diameter of the spoke so that the bottom of the teeth of the sprocket can be inserted without removing the sprocket in the radial direction of the sprocket and the spoke can be prevented from interfering with the sprocket. A bicycle hub provided with a notch, wherein a tip of the spoke is connected to an outer peripheral surface of the second collar by the first flange.
When in contact with the through hole of the collar, the center line of the hub axle
The angle θ formed with the center line of the spoke is approximately as follows:
In the Hare Do relationship R 3 ≦ R 4 - (H 1 + H 2) · tanθ tanθ = (R 4 - (R 5 -d)) / H 1 , however, R 3 is of the spoke inserting notch root circle The radius R 4 is the radius R 5 of the outer periphery of the second collar, and the radius R 5 is the radius of the inner peripheral surface of the spoke through hole of the first collar.
Maximum radius H 1, the distance of H 2 the second collar and said first collar, said between said first collar and said sprocket
A bicycle hub characterized by an axial spacing of the hub axle .
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP08142187A JP3080214B2 (en) | 1995-06-30 | 1996-05-13 | Bicycle hub |
| GB9612643A GB2302846B (en) | 1995-06-30 | 1996-06-17 | Bicycle hub |
| DE19626072A DE19626072C2 (en) | 1995-06-30 | 1996-06-28 | Bicycle hub |
| DE29623101U DE29623101U1 (en) | 1995-06-30 | 1996-06-28 | Bicycle hub |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18788395 | 1995-06-30 | ||
| JP7-187883 | 1995-06-30 | ||
| JP08142187A JP3080214B2 (en) | 1995-06-30 | 1996-05-13 | Bicycle hub |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0971102A JPH0971102A (en) | 1997-03-18 |
| JP3080214B2 true JP3080214B2 (en) | 2000-08-21 |
Family
ID=26474275
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP08142187A Expired - Fee Related JP3080214B2 (en) | 1995-06-30 | 1996-05-13 | Bicycle hub |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3080214B2 (en) |
| DE (1) | DE19626072C2 (en) |
| GB (1) | GB2302846B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6511133B1 (en) | 2000-01-31 | 2003-01-28 | Shimano Inc. | Bicycle hub with spoke seal |
| US6309028B1 (en) | 2000-01-31 | 2001-10-30 | Shimano Inc. | Bicycle hub |
| US6354669B1 (en) | 2000-01-31 | 2002-03-12 | Shimano Inc. | Bicycle hub for tangential spokes |
| JP2023543350A (en) * | 2020-09-23 | 2023-10-13 | ジュニア，ダグラス ギルマン ブラウン | Sprocket with variable root radius |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB138093A (en) * | 1916-10-27 | 1920-11-25 | Mead Cycle Company | Improvements in sprockets |
| CH267839A (en) * | 1948-09-16 | 1950-04-15 | Ag Scintilla | Bicycle hub with gear change gear with two alternately switchable gear ratios. |
| DE8031759U1 (en) * | 1980-11-28 | 1981-06-19 | Fichtel & Sachs Ag, 8720 Schweinfurt | SPROCKET SET FOR THE DRIVE HUB OF A BICYCLE OR THE LIKE. |
| DE3331557A1 (en) * | 1983-09-01 | 1985-03-21 | Fichtel & Sachs Ag, 8720 Schweinfurt | DRIVE HUB WITH AXLE FOR BICYCLES OR THE LIKE |
| US4526558A (en) * | 1983-11-03 | 1985-07-02 | Durham Roger O | Chain engagement slot for bicycle sprockets |
| JP3184230B2 (en) * | 1990-12-28 | 2001-07-09 | 株式会社シマノ | Interior transmission |
| DE4119981C1 (en) * | 1991-06-18 | 1993-01-21 | Fa. Carl Freudenberg, 6940 Weinheim, De | |
| US5301778A (en) * | 1992-09-21 | 1994-04-12 | John Haeussinger | Bicycle hub and freewheel assembly |
-
1996
- 1996-05-13 JP JP08142187A patent/JP3080214B2/en not_active Expired - Fee Related
- 1996-06-17 GB GB9612643A patent/GB2302846B/en not_active Expired - Fee Related
- 1996-06-28 DE DE19626072A patent/DE19626072C2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| DE19626072A1 (en) | 1997-01-02 |
| GB2302846A (en) | 1997-02-05 |
| GB9612643D0 (en) | 1996-08-21 |
| GB2302846B (en) | 1997-07-09 |
| DE19626072C2 (en) | 1998-04-09 |
| JPH0971102A (en) | 1997-03-18 |
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