JPS585835B2 - chain pull mechanism - Google Patents
chain pull mechanismInfo
- Publication number
- JPS585835B2 JPS585835B2 JP8430179A JP8430179A JPS585835B2 JP S585835 B2 JPS585835 B2 JP S585835B2 JP 8430179 A JP8430179 A JP 8430179A JP 8430179 A JP8430179 A JP 8430179A JP S585835 B2 JPS585835 B2 JP S585835B2
- Authority
- JP
- Japan
- Prior art keywords
- chain
- groove
- cam groove
- shaft
- pin
- 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
Landscapes
- Transmissions By Endless Flexible Members (AREA)
- Gears, Cams (AREA)
Description
【発明の詳細な説明】
本発明は例えば自転車の後輪とべタルに設けるギャース
プロケット間に懸架するチェーンを適度な張力で懸引す
る様に調整したり、またチェーンをスプロケットから取
外したりするためのチェーン引き機構に関するものであ
る。DETAILED DESCRIPTION OF THE INVENTION The present invention is useful for adjusting, for example, a chain suspended between the rear wheel of a bicycle and a gear sprocket provided on the bevel, and for removing the chain from the sprocket. It concerns a chain pulling mechanism.
自転車に利用するこの種チェーン引き機構は従来第８図
に示す如く後輪のギャースプロケット２１のハブ軸２２
を軸受板２３の爪溝２４に嵌挿し、このハブ軸２２を一
端で軸受２５し他端にネジ部２６を形成したボルト調整
部材２７を設け、このネジ部側を前記軸受板２３の端縁
に当接させる保持板２８に嵌挿して、これをナット２９
で締付けることにより、チェーンＣ１を懸引方向へ引き
付ける構造のものが提供されている。Conventionally, this type of chain pulling mechanism used in bicycles is based on a hub shaft 22 of a gear sprocket 21 on the rear wheel, as shown in FIG.
is fitted into the pawl groove 24 of the bearing plate 23, and a bolt adjustment member 27 is provided which has a bearing 25 on one end of the hub axle 22 and a threaded part 26 on the other end, and the threaded part side is attached to the edge of the bearing plate 23. the nut 29.
A structure is provided in which the chain C1 is pulled in the pulling direction by tightening the chain C1.
斯様な構造においては前記ナット２９を介してハブ軸２
２をチェーンＣ１の懸引方向へ引き付ける調整は行える
が、チェーンを弛める方向へハブ軸２２を移動させる場
合、ナット２９を弛めるとチェーンＣ１の張力がハブ軸
２２に付勢している間の調整はできても、単にハブ軸２
２、軸受板２３、及び保持板２８の夫々の緊着が弛むの
みで、チェーンＣ１の弛める方向への軸の移動調整につ
いては十分に行うことができない。In such a structure, the hub shaft 2 is connected to the hub shaft 2 through the nut 29.
2 in the direction in which the chain C1 is suspended, but when moving the hub axle 22 in the direction of loosening the chain, loosening the nut 29 will cause the adjustment while the tension of the chain C1 is biasing the hub axle 22. Even if it is possible, just the hub axle 2
2. The bearing plate 23 and the holding plate 28 are only loosened, and the movement of the shaft in the loosening direction of the chain C1 cannot be adjusted sufficiently.
また、ハブナット３０を介してハブ軸２２を一単固定す
ると、その後チェーン引用のナット２９はこのボルト調
整部材２７になんらの力の付勢が作用しないので、使用
中の振動で自然脱落する可能性がある。Furthermore, once the hub axle 22 is fixed via the hub nut 30, the chain tension nut 29 will not apply any force to the bolt adjustment member 27, so there is a possibility that it will fall off naturally due to vibration during use. There is.
更に、前記チェーン引き調整作業においてはナットを調
整する専用工具がないと容易に修正できない。Furthermore, the chain tension adjustment cannot be easily corrected without a special tool for adjusting the nut.
本発明は上記の欠点を解消すべくチェーンの懸引方向及
び弛み方向への調整をチェーン引体の回動操作に足り簡
単に行え、かつハブ軸の中心位置決めを容易にし更にそ
の固定状態を保持できる様にしたものである。In order to solve the above-mentioned drawbacks, the present invention makes it possible to easily adjust the chain in the tensioning direction and loosening direction by rotating the chain pulling body, and also makes it easy to center the hub axle and maintain its fixed state. I made it possible.
以下本発明の一実施例を図面に基づき詳細に説明する。An embodiment of the present invention will be described in detail below with reference to the drawings.
第１図は競技用自転車の後輪軸受部分を示す背面図であ
り、ハブ軸１は中央に後輪２のリム部３を保持しており
、その両外方にチェーンを介して何れか一方のべタル側
のスプロケットに連結するギャースプロケット４．４．
４を固定している。FIG. 1 is a rear view showing the rear wheel bearing part of a racing bicycle. A hub axle 1 holds a rim part 3 of a rear wheel 2 in the center, and a chain is connected to either side of the hub axle 1. Gear sprocket connected to the sprocket on the bottom side 4.4.
4 is fixed.
また、その両外方に車体の後側２本のフレーム５，６（
上方をサドル連結側に、下方をペタル側に夫々連結して
いる）を後端で溶着するハブ軸１の軸受板７，７を設け
、第２図及び第３図に示す如く該軸受板７，７はハブ軸
を嵌挿する爪溝８，８を夫々形成しかつ該爪溝８，８近
傍にピン９，９を夫々外方へ突設している。In addition, two frames 5, 6 (
Bearing plates 7, 7 are provided for the hub axle 1, which are welded at the rear ends (the upper part is connected to the saddle connection side and the lower part is connected to the petal side, respectively), and the bearing plates 7 are welded to each other at the rear end, as shown in FIGS. 2 and 3. , 7 have claw grooves 8, 8 into which the hub shaft is inserted, respectively, and pins 9, 9 are provided protruding outward near the claw grooves 8, 8, respectively.
更に、その両外方に前記ハブ軸１を挿入する軸孔１０，
１０と前記ピン９，９を挿入するカム溝１１．１１とを
設けていて前記軸受板７，７と回転自在に重合せるチェ
ーン引体１２，１２を設けている。Further, a shaft hole 10 into which the hub shaft 1 is inserted is provided on both outer sides thereof.
10 and cam grooves 11, 11 into which the pins 9, 9 are inserted, and chain pullers 12, 12 which are rotatably overlapped with the bearing plates 7, 7 are provided.
更に、その両外方よりハブ軸１両端のネジ部を介してナ
ット１３．１３を締付け、ハブ軸１に前記軸受板７，７
とチェーン引体１２，１２を一体的に固着している。Furthermore, nuts 13.13 are tightened from the outside through the threaded portions at both ends of the hub axle 1, and the bearing plates 7, 7 are attached to the hub axle 1.
and chain pullers 12, 12 are integrally fixed.
第２図及び第３図に示す如く、前記チェーン引体１２，
１２に形成するカム溝１１，１１はハブ軸１が爪溝８，
８内でチェーン懸引方向Ｄ１及び弛み方向Ｄ２への移動
に対して該カム溝１１，１１の溝縁１４，１４が常時ピ
ン９，９の止めになる様な円弧状に形成している。As shown in FIGS. 2 and 3, the chain puller 12,
The cam grooves 11, 11 formed in the hub shaft 1 are formed in the pawl grooves 8, 12.
The groove edges 14, 14 of the cam grooves 11, 11 are formed in an arcuate shape so that the pins 9, 9 are always stopped by the groove edges 14, 14 of the cam grooves 11, 11 when the chain moves in the chain suspension direction D1 and the chain loosening direction D2.
第４図及び第５図は前記カム溝１１の第１実施例であり
、該実施例ではカム溝１１を前記ハブ軸１の中心から長
さＬ１が例えば７．５度毎に１ｍｍづつという様に等度
数（α）毎に均等づつ増加する様な曲線Ｘ上に形成し、
ハブ軸１が爪溝８内でチェーン懸引方向Ｄ１又は弛み方
向Ｄ４の移動に対して常時ピン９がカム溝１１の溝縁１
４，１４の止めになる様に形成すると共に移動距離Ｌ３
を設定する。FIGS. 4 and 5 show a first embodiment of the cam groove 11, and in this embodiment, the cam groove 11 is arranged such that the length L1 from the center of the hub shaft 1 is, for example, 1 mm at every 7.5 degrees. Formed on a curve X that increases evenly for each equal degree (α),
When the hub axle 1 moves within the pawl groove 8 in the chain tensioning direction D1 or the chain loosening direction D4, the pin 9 always moves against the groove edge 1 of the cam groove 11.
4, 14 to stop the movement distance L3.
Set.
ハブ軸１の移動始端とピン９との位置関係は爪溝８の形
成方向に対しハブ軸１の中心から適宜度数Ｇ１、例えば
６０度に軸受板７のピンが位置する様にしている。The positional relationship between the movement start end of the hub shaft 1 and the pin 9 is such that the pin of the bearing plate 7 is located at an appropriate degree G1, for example 60 degrees, from the center of the hub shaft 1 with respect to the direction in which the pawl groove 8 is formed.
第６図及び第７図は前記カム溝１１の第２実施例を示す
ものであり、該実施例ではカム溝１１１を前記ハブ軸１
０１の中心からの長さＬ２が例えば１０度毎に１ｍｍ、
１．２ｍｍ、１．４ｍｍ、１． ６ｍｍ、１．８ｍｍ、
２ｍｍという様に等差数列毎に増加する曲線Ｙ上に形成
し、ハブ軸１０１が爪溝１０８内でチェーン懸引方向Ｄ
３又は弛み方向Ｄ５の移動に対して常時ピン１０９がカ
ム溝１１１の溝縁１１４，１１４の止めになる様に形成
すると共に、移動距離Ｌ４を設定する。6 and 7 show a second embodiment of the cam groove 11, and in this embodiment, the cam groove 111 is connected to the hub shaft 1.
For example, the length L2 from the center of 01 is 1 mm every 10 degrees,
1.2mm, 1.4mm, 1. 6mm, 1.8mm,
It is formed on a curve Y that increases every arithmetic progression such as 2 mm, and the hub shaft 101 is aligned in the chain suspension direction D within the pawl groove 108.
The pin 109 is formed so as to always stop the groove edges 114, 114 of the cam groove 111 against movement in the loosening direction D5, and the moving distance L4 is set.
ハブ軸１の移動始端とピン１０９との位置関係は爪溝１
０８の形成方向に対しハブ軸１０１の中心から適宜度数
Ｇ２例えば４５度に軸受板１０１のピン１０９が位置す
る様にしている。The positional relationship between the movement start end of the hub shaft 1 and the pin 109 is the pawl groove 1.
The pin 109 of the bearing plate 101 is positioned at an appropriate degree G2, for example 45 degrees, from the center of the hub shaft 101 with respect to the direction in which the bearing plate 101 is formed.
該第２実施例のカム溝１１１の場合、移動距離Ｌ４が前
記第１実施例の距離Ｌ３よりも長く設定することができ
、特にチェーンの取外しが楽に行えると共に、チェーン
引体１１２の動作がスムーズとなる。In the case of the cam groove 111 of the second embodiment, the moving distance L4 can be set longer than the distance L3 of the first embodiment, which makes it particularly easy to remove the chain and allows smooth operation of the chain puller 112. becomes.
而して、ナツト１３，１３を締付ける前にチェーン引体
１２，１１２を夫々第２図から第３図の状態に回動する
と、ハブ軸１，１０１は軸受板７，１０７の爪溝８，１
０８内を直線上で後方へ移動すると共に、軸受板７，１
０７上のピン９，１０９は夫々チェーン引体１２，１１
２’のカム溝１１，１１１内に沿って摺動する。When the chain pullers 12 and 112 are respectively rotated from the state shown in FIG. 2 to the state shown in FIG. 1
08 on a straight line, and the bearing plates 7, 1
Pins 9 and 109 on 07 are chain pullers 12 and 11, respectively.
2' slides along the inside of the cam grooves 11, 111.
この際、爪溝８，１０８で直線上に規制されて移動する
ハブ軸１，１０１の自然移動により付勢され回転しよう
とするチェーン引体１２，１１２はそのカム溝縁が軸受
板７，１０７上に突設するピン９，１０９に当接するた
め回転が阻止され，一単ハブ軸１，１０１の位置設定が
成されるとハブ軸１，１０１の移動方向への付勢力によ
ってチェーン引体１２，１１２は容易に回動変位せずに
設定位置を確保する。At this time, the chain puller 12, 112, which is biased and tries to rotate due to the natural movement of the hub shaft 1, 101, which moves while being restricted in a straight line by the pawl grooves 8, 108, has its cam groove edge connected to the bearing plate 7, 108. Rotation is prevented because it comes into contact with the pins 9, 109 protruding upward, and when the position of the single hub shaft 1, 101 is set, the chain pulling body 12 is biased in the direction of movement of the hub shaft 1, 101. , 112 secure the set position without being easily rotated.
斯様にしてチェーンＣの懸引力の調整及び解体をこのチ
ェーン引体１２，１１２の回動操作によって行うように
している。In this way, the tensioning force of the chain C is adjusted and dismantled by rotating the chain pullers 12, 112.
なお、実施例は競技用自転車に適用した場合についてチ
ェーン引体１２，１１２を車輪２の両サイドに設けてい
るが、第１図の左側チェーン側にのみ取付ける構成にも
適用できることは云うまでもない。In addition, in the embodiment, the chain pullers 12, 112 are provided on both sides of the wheel 2 when applied to a competition bicycle, but it goes without saying that the chain pullers 12, 112 can also be applied to a configuration in which they are attached only to the left chain side in FIG. do not have.
叙上の如く本発明はチェーンを巻回すギャースプロケッ
トの軸を嵌挿する爪溝を形成しかつ該爪溝近傍にピンを
突設してなる軸受板と、前記軸を挿入する軸孔と前記ピ
ンを挿入するカム溝とを設けていて前記軸受板と回転自
在に重合せるチェーン引体とからなり、前記カム溝は軸
が爪溝内でチェーン懸引方向及び弛み方向の移動に対し
て常時ピンがカム溝縁の止めによる様に円弧状に形成し
たので、車体の後方フレームに連結する軸受板の爪溝に
対して車輪のハブ軸を左右共にワンタッチで任意に位置
設定できると共に、一単セットした位置は容易に動くこ
となく、またチェーンの懸引方向及び弛み方向へのハブ
軸の移動調整が容易であり、また車輪の傾き及び中心決
め調整が左右両サイドにおいてワンタッチで行うことが
でき、更に万一ハブナットが弛んだとしてもチェーン引
体がハブ軸を設定位置に緊着させているのが容易に脱輪
することがない等の顕著な効果がある。As described above, the present invention provides a bearing plate having a pawl groove into which the shaft of a gear sprocket for winding a chain is inserted, and a pin protruding from the vicinity of the pawl groove; a shaft hole into which the shaft is inserted; The cam groove is provided with a cam groove into which a pin is inserted, and a chain pulling body that rotatably overlaps the bearing plate, and the cam groove is provided with a cam groove in which the shaft is constantly moved in the chain tensioning direction and loosening direction within the pawl groove. Since the pin is formed in an arc shape so as to be stopped by the cam groove edge, the hub axle of the wheel can be positioned arbitrarily with one touch in relation to the pawl groove of the bearing plate connected to the rear frame of the vehicle body, and it is possible to The set position does not move easily, and it is easy to adjust the movement of the hub axle in the direction of tension and slack of the chain, and the tilt and centering of the wheels can be adjusted with one touch on both the left and right sides. Further, even if the hub nut becomes loose, the chain puller holds the hub axle tightly at the set position, which has the remarkable effect of preventing the wheel from coming off easily.
第１図は本発明の一実施例を示す車輪の軸受部分を示す
説明図、第２図及び第３図は前図のＡ −Ａ線概略断面
作用説明図、第４図及び第５図はカム溝の第１実施例を
示す要部分解動作説明図、第６図及び第７図はカム溝の
第２実施例を示す要部分解動作説明図、第８図は従来例
の説明図である。
Ｃ……チェーン、４……ギャースプロケット、７，１０
７……軸受板、８，１０８……爪溝、９，１０９……ピ
ン、１０，１１０……軸（ハブ軸）、１１，１１１……
カム溝、１２，１１２……チェーン引体、１４，１１４
……溝縁。Fig. 1 is an explanatory view showing a bearing portion of a wheel showing an embodiment of the present invention, Figs. 2 and 3 are schematic cross-sectional action explanatory views taken along line A-A in the previous figure, and Figs. 4 and 5 are FIG. 6 and FIG. 7 are principal part exploded explanation diagrams showing the first embodiment of the cam groove, FIGS. 6 and 7 are principal part exploded explanation diagrams showing the second embodiment of the cam groove, and FIG. 8 is an explanatory diagram of the conventional example. be. C...Chain, 4...Garth sprocket, 7,10
7...Bearing plate, 8,108...Claw groove, 9,109...Pin, 10,110...Shaft (hub shaft), 11,111...
Cam groove, 12, 112...Chain puller, 14, 114
...Groove edge.
Claims (1)
嵌挿する水溝８を形成しかつ該爪溝８近傍にピン９を突
設してなる軸受板７と、前記軸１を挿入する軸孔１０と
前記ピン９を挿入するカム溝１１とを設けていて前記軸
受板７と回転自在に重合せるチェーン引体１２とからな
り、箭記カム溝１１は軸１か爪溝８内でチェーン懸引方
向及び弛み方向の移動に対して常時ピン９がカム溝１１
の溝縁１４，１４の止めになる様な円弧状番ト形成した
ことを特徴とするチェーン引き機構。 ２ 前記カム溝１１は軸１が爪溝８内でチェーン懸引方
向及び弛み方向の移動に対して常時ピン９がカム溝１１
の溝縁１４，１４の止めになる様に、該カム溝１１を前
記軸１の中心から長さＬ１．が等度数（ｄ毎に均等づつ
増加する曲線Ｘ上に形成する様にした前記第１発明記載
のチェーン引き機構。 ３ 前記カム溝１１１は軸１０１が爪溝１０８内でチェ
ーン懸引勇向及び弛み方向の移動に対して常時ピン１０
９がカム溝１１１の溝縁１１４，１１４の止めになる様
に、該カム溝１１１を前記軸１０１の中心から長さＬ２
が等度数（β毎に等差数列Ｌ２毎に増加する曲線Ｙ上に
形成する様にした前記第１発明記載のチェーン引き機構
。[Scope of Claims] 1. A bearing plate 7 formed with a water groove 8 into which the shaft 1 of the gear sprocket 4 around which the chain C is wound is inserted, and a pin 9 protruding from the vicinity of the pawl groove 8; 1 and a cam groove 11 into which the pin 9 is inserted. The pin 9 always moves in the cam groove 11 against movement in the chain tensioning direction and loosening direction within the groove 8.
A chain pulling mechanism characterized in that an arcuate guard is formed to stop the groove edges 14, 14 of the chain. 2 The cam groove 11 is such that the pin 9 always remains in the cam groove 11 when the shaft 1 moves within the pawl groove 8 in the chain tensioning direction and chain loosening direction.
The cam groove 11 is extended a length L1. from the center of the shaft 1 so as to stop the groove edges 14, 14. is formed on a curve Always pin 10 against movement in the loosening direction
9 is a stop for the groove edges 114, 114 of the cam groove 111, extend the cam groove 111 by a length L2 from the center of the shaft 101.
is formed on a curve Y that increases every arithmetic progression L2 for every equal degree (β).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8430179A JPS585835B2 (en) | 1979-07-02 | 1979-07-02 | chain pull mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8430179A JPS585835B2 (en) | 1979-07-02 | 1979-07-02 | chain pull mechanism |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS568779A JPS568779A (en) | 1981-01-29 |
| JPS585835B2 true JPS585835B2 (en) | 1983-02-01 |
Family
ID=13826647
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8430179A Expired JPS585835B2 (en) | 1979-07-02 | 1979-07-02 | chain pull mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS585835B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118426U (en) * | 1983-02-01 | 1984-08-10 | タカノ株式会社 | Table board lifting device |
| JPS6337872Y2 (en) * | 1983-06-10 | 1988-10-06 |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60191592U (en) * | 1984-05-30 | 1985-12-19 | 宮田工業株式会社 | Bicycle chain tension adjustment device |
-
1979
- 1979-07-02 JP JP8430179A patent/JPS585835B2/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS59118426U (en) * | 1983-02-01 | 1984-08-10 | タカノ株式会社 | Table board lifting device |
| JPS6337872Y2 (en) * | 1983-06-10 | 1988-10-06 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS568779A (en) | 1981-01-29 |
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