JPH04169389A - Bicycle chain winding prevention device - Google Patents
Bicycle chain winding prevention deviceInfo
- Publication number
- JPH04169389A JPH04169389A JP2295801A JP29580190A JPH04169389A JP H04169389 A JPH04169389 A JP H04169389A JP 2295801 A JP2295801 A JP 2295801A JP 29580190 A JP29580190 A JP 29580190A JP H04169389 A JPH04169389 A JP H04169389A
- Authority
- JP
- Japan
- Prior art keywords
- chain
- gear
- metal fitting
- prevention device
- gap
- 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.)
- Granted
Links
Landscapes
- Gears, Cams (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Axle Suspensions And Sidecars For Cycles (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
産業上の利用分野
本発明は自転車のチェンが、ギア板に巻き上げられる事
を防ぐためのチェン巻き上げ防止装置に関す５る。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a chain winding prevention device for preventing a bicycle chain from being rolled up on a gear plate.
従来の技術
従来、自転車の駆動手段としてはチェンとギアーによる
ものが一般的である。この方式は第４図に示す様にペダ
ル１１によりクランク１２を回転させ、このクランクと
一体に固定されたフロントギヤ２にチェン８が掛けられ
このチェン８は自転車のフレーム後端に軸支されたリヤ
スプロケット１３にも掛けられているため、リヤスプロ
ケットが回転し、このリヤスプロケット１３に固定され
た後車輪（図示せず）を回転させるというものである。2. Description of the Related Art Conventionally, chains and gears have been commonly used as driving means for bicycles. In this system, as shown in Figure 4, a crank 12 is rotated by a pedal 11, and a chain 8 is hooked onto a front gear 2 which is fixed integrally with the crank, and this chain 8 is pivotally supported at the rear end of the bicycle frame. Since it is also applied to the rear sprocket 13, the rear sprocket rotates, thereby rotating the rear wheel (not shown) fixed to the rear sprocket 13.
このチェンとギ１によるシステムは、一般の実用的な自
転車に於てはチェンケース（図示せず）と称する板金型
の保護カバーによって全体を覆われ、ドロやホコリから
防がれていた。In general practical bicycles, this chain and gear system is entirely covered by a sheet metal protective cover called a chain case (not shown) to protect it from dirt and dust.
しかしスポーツ車と称せられるスポーツを目的として、
自転車全体の重量が軽い事を要求される車種に於ては、
前記チェンケースを装着する事は重量増加となるためこ
れをしなかった。However, for the purpose of sports, which is called a sports car,
For vehicle models that require the entire bicycle to be light in weight,
I did not install the chain case because it would increase the weight.
従来この種のスポーツ車は舗装道路上を走行する。事が
多く、ドロがチェンに付着する事はあまり考えられず、
チェーンケースの必要性も無かったわけである１、
ところが、近年、マウンテンパイクと称される新しい使
い方をするスポーツ車が開発された。Conventionally, this type of sports car drives on paved roads. There are many things that happen, and I don't really think about mud sticking to the chain.
There was no need for a chain case.1 However, in recent years, a sports car with a new use called the Mountain Pike has been developed.
このマウンテンバイクは、舗装道路上でなく山のドロ道
やホコリの多い場所を走行して楽しむだめの自転車であ
る。従って、この車種には特有の下記の様な問題が発生
する。This mountain bike is a bicycle that you can enjoy riding not on paved roads but on muddy mountain roads and dusty areas. Therefore, the following problems specific to this vehicle type occur.
すなわち、きわめてドロの多い場所を走行するためにチ
ェンやギアにドロが付着し、チェンとギアが噛み合った
所にドロがつまって固った時に、チェンがギアから外れ
にくくなる。この現象がフロントプーリーで起った場合
、フロントプーリーは第４図人矢方向に回転しているた
め、第５図に示す様に下側のチェン、すなわちたるみ側
のチェン８−１がフロントギアーの歯先に固着したまま
回転し、チェンステ−９の位置まで持ち上げられる。In other words, when the chain and gears are covered with mud due to driving in extremely muddy areas, and when the mud gets stuck where the chain and gear engage, it becomes difficult for the chain to come off the gears. If this phenomenon occurs in the front pulley, the front pulley is rotating in the direction of the arrow in Figure 4, so the lower chain, that is, the chain 8-1 on the slack side, is connected to the front gear as shown in Figure 5. It rotates while fixed to the tips of the teeth, and is lifted up to the chain stay 9 position.
第６図では見やすくするために１．チェン９が７０、ン
トギア２の外側のギア２−１に掛けられた状態を示すが
、これと同様の事が中間ギア２−２又は内側ギア２−３
に於て発生した場合、チェン８はチェンステ−９と外側
ギア２−１の間に挟まれ、固定してしまう。走行中にこ
の様な事が起こるとクランクの回転が急に固定され危険
である。In Figure 6, 1. The chain 9 is shown hanging on the outer gear 2-1 of the middle gear 2, but the same thing can be done with the middle gear 2-2 or the inner gear 2-3.
If this occurs, the chain 8 will be caught between the chain stay 9 and the outer gear 2-1 and become fixed. If this happens while driving, the rotation of the crank will suddenly stop, which is dangerous.
従来この現象を防ぐために、チェンステ−９とフロント
ギアー２の内側のすき間に、第６図に示す様な当て板１
０１を固定するものが使用されていた。Conventionally, in order to prevent this phenomenon, a patch plate 1 as shown in Fig. 6 was installed in the gap between the chainstay 9 and the front gear 2.
01 was used.
発明が解決しようとする課題
しかしこの方法では、当て板とフロントギアーの間のす
き間の大きさを調整できない事や、当て板をチェンステ
ーに直接固定するだめに、チェンステーの形状が異なる
他のフレームに使用するという事ができないという課題
があった。Problems to be Solved by the Invention However, with this method, the size of the gap between the backing plate and the front gear cannot be adjusted, and since the backing plate cannot be fixed directly to the chainstay, other There was a problem that it could not be used for frames.
課題を解決するだめの手段
本発明はドロがチェンやフロントプーリーに固定してフ
ロントプーリーにたるみ側チェンが巻き上げられる事を
防止する当て板を、フロントプーリ、−とのすき間の調
整を容易な方法でフレームに固定するものである。Means for Solving the Problems The present invention provides a method for easily adjusting the gap between the front pulley and the backing plate that fixes the chain to the chain or the front pulley to prevent the slack chain from being hoisted up by the front pulley. It is fixed to the frame.
そのために、フレームの下ブリッジに支持金具をボルト
止めし、この支持金具に当て板を調節可能にビス止めす
る。To this end, a supporting metal fitting is bolted to the lower bridge of the frame, and a caul plate is adjustable and screwed to this supporting metal fitting.
作用
上記手段により当て金具をチェン巻き上げの防止に最適
の位置に固定し当て金具とフロントギアとのすき間も最
適に調整できる０
フロントギアにドロで固着され巻き上げられようとする
チェンは、チェンステーに接近する以前にフロントギア
の歯先に接近して設けられた当て金具に当接し、チェン
の上方への動きを阻止し、チェンをフロントギアから離
脱させることができる０
実施例
本発明によるチェン巻き上げ防止装置の実施例を第１図
〜第３図と共に説明する。Effect: By using the above method, the stopper can be fixed in the optimal position to prevent the chain from hoisting up, and the gap between the stopper and the front gear can be adjusted optimally. If the chain is stuck to the front gear with mud and is about to be hoisted, it should be placed on the chainstay. Before it approaches, it comes into contact with a stopper provided close to the tips of the front gear teeth, preventing the chain from moving upwards, and allowing the chain to separate from the front gear.Example: Chain winding according to the present invention An embodiment of the prevention device will be described with reference to FIGS. 1 to 3.
第１図に於て１は本発明による当て金具を示す０この当
て金具１は板金により形成されており、全体は数か所に
於て直角に曲げられた階段状をなしている。In FIG. 1, reference numeral 1 indicates a metal fitting according to the present invention. This metal fitting 1 is made of sheet metal, and the whole has a stepped shape bent at right angles at several places.
この当て金具１は自転車のフロントギア２の板面と平行
な部分５１，５２．５３とフロントギアの板面と直角な
部分６１．６２よシ成っている。This fitting 1 consists of parts 51, 52, 53 parallel to the plate surface of the front gear 2 of the bicycle, and parts 61, 62 perpendicular to the plate surface of the front gear.
この当て金具１は第２図に示すように中央の部分にネジ
穴１−１を有し、この当て金具１を支えるための支持金
具３と小ネジ４により結合される。As shown in FIG. 2, this metal fitting 1 has a screw hole 1-1 in the center thereof, and is connected to a support metal fitting 3 for supporting the metal fitting 1 by machine screws 4.
支持金具３は板金を曲折する事により形成され、第３図
に示すように一端に長穴３−１を有し、この長穴３−１
でもって自転車の下ブリッジ６にボルト６とナツト７に
より固定される。支持金具３の他端は、フレームの右側
すなわちフロントギア２に接近する様に延長され、フロ
ントギア２の外周付近にてフロントギヤ２の板面と平行
な取付面３−２を形成しこの中央に当て金具１を取付け
るための長穴３−３を有する。前記支持金具３の取付面
３−２の端には板金をおり曲げてなるガイド部３−４を
有し、当て金具１の方向を規制している。この方向は第
２図に示すようにフロントギアの中心Ｃ方向と一致して
いる。The support fitting 3 is formed by bending a sheet metal, and has a long hole 3-1 at one end as shown in FIG.
Therefore, it is fixed to the lower bridge 6 of the bicycle with bolts 6 and nuts 7. The other end of the support fitting 3 is extended to the right side of the frame, that is, close to the front gear 2, and forms a mounting surface 3-2 parallel to the plate surface of the front gear 2 near the outer periphery of the front gear 2. It has an elongated hole 3-3 for attaching the stopper fitting 1. The end of the mounting surface 3-2 of the support fitting 3 has a guide portion 3-4 formed by folding and bending a sheet metal, and regulates the direction of the stopper fitting 1. This direction coincides with the direction of the center C of the front gear, as shown in FIG.
次に実施例の作用について記す。Next, the effects of the embodiment will be described.
当て金具１をフロントギア２の歯先及びギア板の側面に
きわめて接近させて設置する事により、ドロ等でギアに
噛み込んだチェン８に当接させ、これを離脱させる事が
できる。この設置に適した位置はギア２の外周に於てチ
ェン８が通常離脱する箇所、すなわちノ・ンガー中心Ｃ
の直下部より後で、チェンステ−９と交差する場所より
下側である。従って、当て金具１は支持金具３によりハ
ンガー１０より後でチェンステ−９とゆるみ側チェン８
−１（下側チェン）の中間部に固定される。By installing the stopper 1 very close to the tooth tip of the front gear 2 and the side surface of the gear plate, it can be brought into contact with the chain 8 that is caught in the gear due to mud etc., and can be removed. A suitable location for this installation is the location on the outer periphery of the gear 2 where the chain 8 normally leaves, that is, the center of the chain C.
It is behind the point just below the chain stay 9 and below the place where it intersects with the chainstay 9. Therefore, the support fitting 1 is connected to the chain stay 9 and the loose side chain 8 after the hanger 10 by the support fitting 3.
-1 (lower chain) is fixed to the middle part.
当て金具１とギア板２とのすき間ｌｌ ｒ １２．１５
及び当て金具１と歯先のすき間ＳＩ＋８２は共に重要な
寸法である。なぜなら大きすぎるとそのすき間の間にチ
ェン゛ｄが挟まれる恐れがあるし、まだ小さすぎるとギ
ア板２や歯先に接触する恐れがある。Gap between fitting 1 and gear plate 2 ll r 12.15
The gap SI+82 between the stopper fitting 1 and the tooth tip are both important dimensions. This is because if it is too large, there is a risk that the chain d will be caught between the gaps, and if it is still too small, there is a risk that it will come into contact with the gear plate 2 or the tips of the teeth.
従って本発明では容易にこのすき間を調整できる様にし
ている。すなわち、当て金具１とギア板２のすき間ｌｓ
ｒ ７！２ 、ＡＳは、第３図に於て支持金具３をギ
ヤ板に直角な下ブリッジ６にボルト６で固定しているだ
めで、このボルト６をゆるめて、支持金具の長穴３−１
を利用してＢ矢方向に移動調整する事により当て金具１
とギア板２のすき間１＋、１２．ｌｓを調節する事がで
きる。Therefore, in the present invention, this gap can be easily adjusted. That is, the gap ls between the stopper fitting 1 and the gear plate 2
r7!2, AS is shown in Fig. 3, where the support metal fitting 3 is fixed to the lower bridge 6 perpendicular to the gear plate with bolts 6. Loosen this bolt 6 and insert the support metal fitting into the long hole 3. -1
By adjusting the movement in the direction of arrow B using
and the gap between gear plate 2 1+, 12. ls can be adjusted.
次に当て金具１とギア２の歯先のすき間Ｓ１．Ｓ２は、
当て金具１と支持金具３を締付けている小ネジ４をゆる
めて、支持金具の長穴３−３を利用して、ガイド部３−
４に沿って移動させると、当て金具１はフロントギア２
の中心方向に移動するので、Ｓ １ ｒ ８２を有効に
調節する事ができる。Next, there is a gap S1 between the tooth tips of the stopper 1 and the gear 2. S2 is
Loosen the machine screw 4 that fastens the stopper fitting 1 and the support fitting 3, and use the elongated hole 3-3 of the support fitting to tighten the guide part 3-.
4, the stopper fitting 1 will move along the front gear 2.
, S 1 r 82 can be effectively adjusted.
発明の効果
（１）当て金具をチェンステーと緩み側チェンの中間に
て設置するため、チェンがチェンステーに接触する事な
しに巻き上げを防止する事ができるＯ
（錦 当て金具は階段状のため、三枚のフロントギアの
どの位置にチェンが巻き付いてもこれを離脱させる事が
できる。Effects of the invention (1) Since the stopper is installed between the chainstay and the chain on the loose side, the chain can be prevented from winding up without coming into contact with the chainstay. , No matter where the chain wraps around the three front gears, it can be released.
（３） 支持金具及び当て金具はボルト又はネジをも
ってフレームに取付けられているため、当て金具とフロ
ントギアーとのすき間を自由に調整する事ができ、この
ため、フロントギアの大きさを変更した場合でも容易に
対応する事ができる。(3) Since the supporting metal fittings and the metal fittings are attached to the frame with bolts or screws, the gap between the metal fittings and the front gear can be adjusted freely, so if the size of the front gear is changed. But it can be easily dealt with.
第１図は本発明の当て板とフロントギアの関係を示す平
面図、第２図は本発明のチエン巻き上げ防止装置を示す
部分断面図、第３図は本発明のチェン巻き上げ防止装置
の取付状態を示す部分断面図、第４図および第５図は自
転車の駆動装置を示す正面図、第６図は従来使用されて
いた当て板の見取図である。
１・・・・・当て金具、２・・・・・・フロントギア、
３・・・・・・支持金具、４・・・・・・小ネジ、５・
・・・・・下ブリッジ、６・・・・・・ボルト、７・・
・・・・ナツト、８・・・・・・チェン、９・・・・・
・チェンステー、１ｏ・・・・・・ハンガー。
代理人の氏名 弁理士 小鍜治 明 ほか２名第１図
第３図Fig. 1 is a plan view showing the relationship between the patch plate and the front gear of the present invention, Fig. 2 is a partial sectional view showing the chain hoisting prevention device of the present invention, and Fig. 3 is an installed state of the chain hoisting prevention device of the present invention. FIGS. 4 and 5 are front views showing the bicycle drive device, and FIG. 6 is a sketch of a conventionally used patch plate. 1...Batch fitting, 2...Front gear,
3... Support metal fittings, 4... Machine screws, 5...
...Lower bridge, 6...Bolt, 7...
...Natsuto, 8...Chen, 9...
・Chain stay, 1o...Hanger. Name of agent: Patent attorney Akira Okaji and two others Figure 1 Figure 3
Claims (5)
けられた当て金具を、ハンガー軸より後方であって、チ
ェンステーと緩み側チェンとの間の位置に固定してなる
チェンの巻き上げ防止装置。(1) Winding up a chain by fixing a metal fitting installed with a small gap between the tip of the front gear teeth and the chain at a position behind the hanger shaft and between the chain stay and the chain on the loose side. Prevention device.
によって支えられてなる特許請求の範囲第１項記載のチ
ェン巻き上げ防止装置。(2) The chain winding prevention device according to claim 1, wherein the metal fitting is supported by a supporting metal fitting fixed to the chain stay.
の側面に近接する部分と、ギア板に直角に曲げられギア
の先端に近接する部分を有する、階段状に曲げられた板
金より成る特許請求の範囲第１項又は第２項記載のチェ
ン巻き上げ防止装置。(3) The metal fitting is made of a sheet metal bent in a stepped manner, with a part parallel to the gear plate of the front gear and close to its side, and a part bent at right angles to the gear plate and close to the tip of the gear. A chain winding prevention device according to claim 1 or 2.
られ、ギア先端とのすき間の大きさを調節可能にしてな
る特許請求の範囲第１項又は第２項記載のチェン巻き上
げ防止装置。(4) The chain wind-up prevention device according to claim 1 or 2, wherein the stopper is attached movably toward the center of the gear plate, and the size of the gap between it and the tip of the gear can be adjusted.
可能に固定され、当て金具とギア板の側面のすき間を調
整可能とする特許請求の範囲第１項又は第２項記載のチ
ェン巻き上げ防止装置。(5) Chain winding prevention according to claim 1 or 2, wherein the supporting metal fitting is fixed to the chain stay so as to be movable in the left and right direction, and the gap between the supporting metal fitting and the side surface of the gear plate can be adjusted. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2295801A JP2639209B2 (en) | 1990-10-31 | 1990-10-31 | Bicycle chain hoist prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2295801A JP2639209B2 (en) | 1990-10-31 | 1990-10-31 | Bicycle chain hoist prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04169389A true JPH04169389A (en) | 1992-06-17 |
| JP2639209B2 JP2639209B2 (en) | 1997-08-06 |
Family
ID=17825343
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2295801A Expired - Fee Related JP2639209B2 (en) | 1990-10-31 | 1990-10-31 | Bicycle chain hoist prevention device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2639209B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2230168A1 (en) * | 2009-03-16 | 2010-09-22 | Jochen Klieber | Device for guiding a chain |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139693U (en) * | 1980-03-25 | 1981-10-22 | ||
| JPH0163595U (en) * | 1987-10-19 | 1989-04-24 | ||
| JPH01142397U (en) * | 1988-03-25 | 1989-09-29 | ||
| JPH08232U (en) * | 1992-03-28 | 1996-02-06 | 良吉 江本 | Peripheral wall for reinforced concrete construction by subsidence for underground construction |
-
1990
- 1990-10-31 JP JP2295801A patent/JP2639209B2/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56139693U (en) * | 1980-03-25 | 1981-10-22 | ||
| JPH0163595U (en) * | 1987-10-19 | 1989-04-24 | ||
| JPH01142397U (en) * | 1988-03-25 | 1989-09-29 | ||
| JPH08232U (en) * | 1992-03-28 | 1996-02-06 | 良吉 江本 | Peripheral wall for reinforced concrete construction by subsidence for underground construction |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2230168A1 (en) * | 2009-03-16 | 2010-09-22 | Jochen Klieber | Device for guiding a chain |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2639209B2 (en) | 1997-08-06 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |