JPS5867587A - Sheath transmission for bicycle - Google Patents
Sheath transmission for bicycleInfo
- Publication number
- JPS5867587A JPS5867587A JP16772781A JP16772781A JPS5867587A JP S5867587 A JPS5867587 A JP S5867587A JP 16772781 A JP16772781 A JP 16772781A JP 16772781 A JP16772781 A JP 16772781A JP S5867587 A JPS5867587 A JP S5867587A
- Authority
- JP
- Japan
- Prior art keywords
- wire
- shaft
- moving
- fixed
- rotating member
- 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
- Insulated Conductors (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】
本発明は、自転車用外装変速機に関し、詳しくは、3段
乃至8段の多段ギヤがら成不フリーホイールの選択し、
た1のギヤにチェーンを掛は替えるための自転車用後変
速機或いは、2段乃至4段の多段チェーンギヤの選択し
た】のチェーンギヤにチェーンを掛は替えるための自転
車用前変速機の改良に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an external bicycle transmission, and more specifically, the present invention relates to an external bicycle transmission, and more specifically, a multi-stage gear transmission with three to eight stages, a freewheel selection system,
Improvement of a bicycle rear derailleur for changing the chain on one gear, or a bicycle front derailleur for changing the chain on the selected chain gear of 2 to 4 gears. Regarding.
従来からこの種自転車用外装変速機は、第】8図に示す
如く所謂平行四辺形パンタグラフ機構を利用してテンシ
ョナーが多段フリーホイールの・各ギヤと平行となるよ
うにハブ軸方向に移動するようju11成したものが始
んとである。即ち、自転車フレームのりャーエンドプレ
ート七一体的に取り付けた固定部材(&)Kl対の対向
状平行リンクプレート(bl)(b、)を回動可能に枢
支せしめると共に、該平行リンクプレート(bυ(b、
)の先端部に前記固定部材(a)と対向する移動部材(
o)を枢支せしめ、この移動部材(o)にガイドブーI
J (d)及びテンションプーリ(図示路)から成るテ
ンショナー(e)を回動可能に枢支せしめて成り、固定
部材(a)、一対のリンクプレート(b、)(b、)及
び移動部材(0)Kより形成される平行四辺形の対角線
長さをワイヤー(f)を用いた牽引手段により変化せし
めることにより前記移動部材(c)乃至テンショナー(
e)を多段ギヤに対し平行を維持しつつ移動せしめるも
のであった(第18図鎖線参照)。Conventionally, this type of external bicycle transmission has utilized a so-called parallelogram pantograph mechanism, as shown in Figure 8, to move the tensioner in the hub axis direction so that it is parallel to each gear of the multi-stage freewheel. What was completed in ju11 is the beginning. That is, the fixed member (&) Kl pair of opposed parallel link plates (bl) (b,) which are integrally attached to the bicycle frame rear end plate 7 are rotatably supported, and the parallel link plates (bυ(b,
) at the tip of the movable member (
o) is pivotally supported, and a guide boo I is attached to this movable member (o).
J (d) and a tensioner (e) consisting of a tension pulley (path shown) is rotatably supported, and includes a fixed member (a), a pair of link plates (b, 0) The moving member (c) to the tensioner (
e) was moved while maintaining parallel to the multi-stage gear (see the chain line in Figure 18).
尚、上記平行四辺形リンク機構においては、前記リンク
プレート(bl)(bz)を一方に回動付勢すへくコイ
ルバネ(図示路〕を4個の枢支ピンのうちいずれかのビ
ンに套嵌してあり、ワイヤー(f)を牽引すれは前記移
動部材(C)が前記コイルバネの弾力に抗して平行移動
し、ワイヤー(f)の牽引を弛めれは前記移動部材(C
)は前記コイルバネの弾力に−より元の位置に復帰する
。In the above-mentioned parallelogram link mechanism, a coil spring (shown in the figure) is attached to one of the four pivot pins to bias the link plates (bl) (bz) in one direction. When the wire (f) is pulled, the movable member (C) moves in parallel against the elasticity of the coil spring, and when the wire (f) is loosened, the movable member (C) moves in parallel.
) returns to its original position due to the elasticity of the coil spring.
しかしながら斯かる従来例自転車用外装変速機は、以下
に列記する種々の問題点を包含している。However, such conventional bicycle external transmissions include various problems listed below.
第一に、4個の平行四辺形リンク部材、即ち、固定部材
(&)、 IJンクプレート(bl)(b2)及び移動
部材(C)並びにこれら部材の枢動部の全てか外部に露
出しているため1各すンク部材の表面或いは各リンク部
材の内面に錆が発生し易すく、又、4個のリンク部材に
より形成される空間や各部材の枢動部及び摺動部の隙間
に雨水や泥或いは塵が侵入するのを避けられない。従っ
て、悪路走行後そのまま放置すれは、錆や泥が前記平行
四辺形リンク機構の円滑な作動を阻害して変速性能を著
しく劣化させ且つ寿命を短縮させる結果となる。First, all of the four parallelogram link members, namely the fixed member (&), the IJ link plate (bl) (b2) and the movable member (C), and the pivoting parts of these members are exposed to the outside. 1. Rust is likely to occur on the surface of each link member or the inner surface of each link member, and rust is likely to occur in the space formed by the four link members and in the gaps between the pivoting parts and sliding parts of each member. Ingress of rainwater, mud, or dust cannot be avoided. Therefore, if the parallelogram link mechanism is left as it is after driving on a rough road, rust and mud will impede the smooth operation of the parallelogram link mechanism, significantly deteriorating the shifting performance and shortening the service life.
第二に、斯かる平行四辺形パンタグラフ機構は、その平
行四辺形の対角線長さを変化せしめることにより変形作
動させるのであるが、かかる変形作動ワイヤー操作によ
り行うには、該平行四辺形の対角線の一端部付近(第1
3図に示す例においてはリンクプレート(b、)の固定
部材(−)側端部)にアウターワイヤー(g)の端部止
着部(h)を、前記対角線の他端部付近(第13図に示
す例においては移動部材(O)のリンクプレート(b、
)との枢支ビン付近)Kインナーワイヤー(j)の端部
止着部(りを夫々設け、これらインナーワイヤー(j)
とアウターワイヤー(g)の軸方向の相対摺動により前
記対角線長さを変化せしめるしか方法がな(、例えは1
本のワイヤーのみて変形操作を行うことは実際上不可能
であるaこのように、インナーワイヤー(j)とアウタ
ーワイヤー(g)から成るワイヤー(f)を使用する場
合、アウターワイヤー(g)とこれに通挿−せるインナ
ーワイヤー(j)ととの間の摺動抵抗が大きいため、イ
ンナーワイヤー(j)を牽引するための変速操作レバー
の回動にも相当抵抗があった。Second, such a parallelogram pantograph mechanism is deformed by changing the length of the diagonal of the parallelogram, but in order to operate the deformation by operating the deformation actuating wire, the length of the diagonal of the parallelogram must be changed. Near one end (first
In the example shown in Fig. 3, the end fastening part (h) of the outer wire (g) is attached to the fixing member (-) side end of the link plate (b, ), and the end fixing part (h) of the outer wire (g) is In the example shown in the figure, the link plate (b,
) K inner wire (j) is provided with an end fastening part (near the pivot pin), and these inner wires (j)
The only way is to change the diagonal length by relative sliding in the axial direction of the outer wire (g) and the outer wire (g).
It is practically impossible to perform a deformation operation using only the actual wire.A In this way, when using a wire (f) consisting of an inner wire (j) and an outer wire (g), the outer wire (g) Since the sliding resistance between the inner wire (j) and the inner wire (j) that is inserted through the inner wire (j) is large, there is considerable resistance to rotation of the speed change operating lever for pulling the inner wire (j).
第三に、リンク部材がそのまま露出しているため、美感
上必ずしも好ましいとは言えず、デザイン上の工夫を凝
らしても4個の部材によって構成される平行四辺形パン
タグラフという基本構成か変わらない以上美感の向上に
は限界があった。Third, the link members are exposed as they are, which is not necessarily aesthetically pleasing, and even if we try to improve the design, the basic structure of a parallelogram pantograph made up of four members remains the same. There were limits to the improvement of beauty.
本発明は、上記従来の自転車用外装変速機における問題
点を一挙に解決すべく案出された全く新しい形式の外装
変速機を提供することを目的とし、後変速機においては
自転車フレームのりャーエンドプレートに、前変速機に
おいては自転車フレームのシートパイプに夫々取り付け
るべき基体に固定軸を一体的に設け、後変速機において
はガイドプーリ及びテンションプーリを有して成るテン
ショナーを、前変速機においてはチェーンガイドプレー
トを夫々取り付けた移動部材に移動軸を一体的に設け、
これら固定軸及び移動軸を平行状に対峙せしめると共に
該両軸を夫々回転可能に軸支する回動部材により該両軸
を連携させ、且つ前記固定軸及び移動軸にワイヤー、ベ
ルト等の無端連続体を懸回して前記両軸を連繋せしめる
手段を設けることにより、前記回動部材が前記固定軸回
りを回動しても前記移動軸は自転しないように構成した
こ々を特徴とする。本発明は、斯くの如く構成したこと
により、前記回動部材の形状を前記固定軸、前記移動軸
、及び前記手段の全てを内包し得る直状に形成し得て、
この回動部材の内IWK水、泥、塵等が侵入するのを阻
止することができる他、前記回動部材を単一ワイヤーに
より直接回動することにより極めて軽い変速レバー操作
により変速操作を為し得る等、従来の所謂パンタグラフ
式外装変速機では全く期待し得なかった顕著なる効果を
奏する。An object of the present invention is to provide a completely new type of external derailleur devised to solve the problems of the conventional external derailleur for bicycles at once. In the front transmission, a fixed shaft is integrally provided on the base body to be attached to the seat pipe of the bicycle frame in the end plate, and in the rear transmission, a tensioner comprising a guide pulley and a tension pulley is installed in the front transmission. A moving shaft is integrally provided to each moving member to which a chain guide plate is attached.
The fixed shaft and the moving shaft are made to face each other in parallel, and the two shafts are linked by a rotating member that rotatably supports each shaft, and the fixed shaft and the moving shaft are connected to each other by an endless wire, belt, etc. The present invention is characterized in that, by providing a means for suspending the body and connecting the two shafts, the moving shaft does not rotate even when the rotating member rotates around the fixed shaft. According to the present invention, with such a configuration, the rotating member can be formed into a straight shape that can include all of the fixed shaft, the moving shaft, and the means,
In addition to being able to prevent IWK water, mud, dust, etc. from entering this rotating member, by directly rotating the rotating member with a single wire, it is possible to change gears with an extremely light shift lever operation. It achieves remarkable effects that could not be expected with conventional so-called pantograph external transmissions.
以下、本発明を図面に示す実施例に基ついて具体的に説
明する。Hereinafter, the present invention will be specifically described based on embodiments shown in the drawings.
第1図乃至第4図は、後変速機に本発明を適用した例を
示す。1 to 4 show an example in which the present invention is applied to a rear transmission.
第1図及び第2図において、(1)は自転車フレームの
りャーエンドプレート(2)K該外速変速機を取り付け
るための基体、021は回動部材、(4jは移動部材を
示し、この移動部材(4)には、ガイドローラ(5)及
びテンションローラ(6)を夫々軸支して成るテンショ
ナー(7)を回動可能に枢支しである。チェーン(c)
は第1図鎖線で示す如くテンションローラ(6)、ガイ
ドローラ(5)及びフリーホイール(F)の選択した】
のスプロケツ) (S)に順次噛合しつつ走行する。前
記テンショナー(7)は、前記ガイドローラ(5)の枢
支軸(8)を中心として第1図時計回り方向に附勢され
ており、チェーン(0)に一定の張力を附与する。斯か
る附勢方法として図示例においては、前記移動部材(4
)の内部に渦巻きバネ(9)を介装することにより行っ
ている。In Figures 1 and 2, (1) is a bicycle frame rear end plate, (2) K is a base body for attaching the external speed transmission, 021 is a rotating member, and (4j is a moving member; A tensioner (7), which includes a guide roller (5) and a tension roller (6), is rotatably supported on the movable member (4).Chain (c)
The tension roller (6), guide roller (5) and freewheel (F) were selected as shown by the chain lines in Figure 1]
Sprockets) (S) run while sequentially meshing with each other. The tensioner (7) is energized clockwise in FIG. 1 about the pivot shaft (8) of the guide roller (5), and applies a constant tension to the chain (0). In the example illustrated as such an energizing method, the movable member (4
) by interposing a spiral spring (9) inside the spring.
第1図及び第2図から明らかなように、本発明に係る自
転車用外装変速機においてCは、従来例における平行四
辺形パンタグラフ機構に相当する構成部材が全く外部K
i!出していない。斯くするためには、前記基体(1)
と前記移動部材(4)とを以下に説明する如(連携せし
めることにより初めて可能となる。As is clear from FIGS. 1 and 2, in the bicycle external transmission according to the present invention, the component C corresponding to the parallelogram pantograph mechanism in the conventional example is entirely external K.
i! I haven't released it. In order to do this, the base (1)
This becomes possible only by coordinating the moving member (4) and the moving member (4) as described below.
即ち、前記基体(1)の下方に固定軸叫を突設し、前記
移動部材(4)の上方に移動軸回を突設すると共に、こ
れら両軸(101iloを一定間隔を置いて平行に対峙
せしめ、且つ該両輪0■αυを夫々回転可能に支持する
回動部材a21vcより連携せしめると共に、前記固定
軸00)及び前記移動軸QIIK無端連続体OJを懸回
することにより前記両軸を連繋する手段@)を設けるの
である。That is, a fixed shaft is provided protruding below the base body (1), a movable shaft is provided projecting above the movable member (4), and these two shafts (101ilo) are arranged in parallel with each other at a constant interval. At the same time, the two wheels 0 and αυ are linked by a rotating member a21vc that rotatably supports them, and the fixed shaft 00) and the moving shaft QIIK are connected by hanging the endless continuous body OJ. A means @) is provided.
第3図乃至第8図は前記無端連続体131としてワイヤ
ー圓を用いた例を示す。以下これを詳説する。3 to 8 show examples in which a wire circle is used as the endless continuous body 131. This will be explained in detail below.
図示する例において、前記回動部材O2は、横断面長円
状の直状に形成してあり、この直状の回動部材口2の内
部に前記固定軸00)、前記移動軸ttU及び前記手段
6A)等を収納してしまうのである。In the illustrated example, the rotating member O2 is formed in a straight shape with an oval cross section, and the fixed shaft 00), the moving shaft ttU, and the Means 6A) etc. are stored therein.
前記回動部材口2は、組み付けの便宜上断面長円状の有
底筐体(12a)と、その底邪開口05)を封鎖し得る
蓋体(12b)とにより構成する。前記筐体(12a)
の天井部Oθの一端@には、前記固定軸叫の基部(]O
a)を回転可能に受止する軸支孔07+を、他端@には
、前記移動軸uDの先端部(Ilb)を回転可能に受止
する軸支孔0印を夫々穿設する。The rotating member opening 2 is constituted by a bottomed housing (12a) having an oval cross section for convenience of assembly, and a lid (12b) capable of closing the bottom opening 05). The housing (12a)
At one end of the ceiling Oθ, there is a base (]O
A shaft support hole 07+ for rotatably receiving a) is formed at the other end @, and a shaft support hole 0 mark for rotatably receiving the tip (Ilb) of the moving shaft uD is formed at the other end @.
前記固定軸(lO)の軸端部には、前記蓋体(12に+
)を固定するためのボルトa9を螺締すべき螺孔嘆を穿
設すると共に、前記無端ワイヤー04)を懸回すべき第
1リール(21)を該固定軸[101に対し回転不能に
嵌合すべき異形端のを形成する。At the shaft end of the fixed shaft (lO), there is a
), and the first reel (21) on which the endless wire 04) is to be suspended is fitted non-rotatably to the fixed shaft [101]. Form an irregularly shaped end.
一方、前記移動部材(4)の上方に突設すべき移動軸t
ll) it 、組み付けの便宜上2体とし、移動部材
(4)ニ突設した第】移動軸(lla)K第2移動軸(
月b)を継き足すように構成す7So第1移動軸(月a
)の端部には第2移動軸(11111)に設けた螺細部
のが螺合する螺孔(241を穿設すると共に、前記無端
ワイヤー(141を懸回すべき第2リール(25)を該
第1移動軸(] llaに対し回転不能に嵌合すべき異
形端(26)を形成する。On the other hand, the moving shaft t to be provided protruding above the moving member (4)
ll) it, for convenience of assembly, it is made into two parts, and the moving member (4) is provided with a protruding second moving axis (lla) and a second moving axis (lla).
7So first movement axis (month a) configured to add month b)
) is provided with a screw hole (241) into which the screw part provided on the second moving shaft (11111) is screwed, and a second reel (25) around which the endless wire (141) is to be suspended is provided. A deformed end (26) is formed to be non-rotatably fitted to the first moving shaft (]lla.
前記固定軸αωに一体的に嵌着すべき前記第Jリール(
21)及び前記移動軸09に一体的に嵌着すへき第2リ
ール(ロ)は、夫々前記異形端@母と同一形状の透孔@
例を有する円板状部材であり、該円板周部にガイド溝(
2]a)(25a) を有する。尚これら第】及び第
2リールの外径は、同一径に定める◎前記蓋体(12b
)には、前記筐体(12a)に穿設せる2つの軸支孔Q
7+ (181と対向する部位に透孔C(91f40)
を穿設しておく。The J-th reel (to be integrally fitted to the fixed shaft αω)
21) and the second reel (b) that is integrally fitted onto the moving shaft 09, each has a through hole with the same shape as the irregularly shaped end.
It is a disc-shaped member having a guide groove (
2]a) (25a). The outer diameters of these reels [12b] and 2nd reel are determined to be the same diameter.
) has two shaft support holes Q drilled in the housing (12a).
7+ (Through hole C (91f40) in the part opposite to 181
should be drilled.
尚、図中符号(2)及び■は、回動部材Gzの側壁から
該回動部材02の内部空間に向は螺入したストッパーボ
ルトcill @と協働して前記回動部材(121の回
動角度範囲を所望量に規定するためのストッパ一部材で
、前記固定軸α■及び前記移動軸dllに夫々一体重に
取り付けられ、且つ前記ストッパーボルトc11)□□
□七当接可能な部位に当接片((財)を夫々突設しであ
る0これらストッパ一部材@■を前記固定軸+101及
び移tl’J@’(IDVC一体重に取り付けるには、
前記異形端@母と嵌合可能な透孔C151(至)を穿設
すると共に該透孔c(5]G6+を前記異形端薗@に嵌
合せしめるようにするとよい。Incidentally, the symbols (2) and ■ in the figure indicate the rotation of the rotation member (121) in cooperation with a stopper bolt cill @ screwed into the inner space of the rotation member 02 from the side wall of the rotation member Gz. A stopper member for regulating the range of moving angles to a desired amount, which is attached to the fixed shaft α■ and the moving shaft dll as one unit, and the stopper bolt c11) □□
□Protruding abutment pieces ((Incorporated)) are provided at the contactable parts respectively.To attach these stopper members @■ to the fixed shaft +101 and transfer tl'J@' (IDVC unit weight,
It is preferable to drill a through hole C151 (to) that can fit into the irregularly shaped end @ mother and to fit the through hole C (5) G6 + into the irregularly shaped end @.
又、図中符号(資)は、前記固定軸(101に套挿され
、且つ前記回動部材α2を前記固定軸回りの第5図矢印
T方向に回動附勢するための捩りコイルバネで、一端a
(87&)を折り曲げて前記固定軸(10)側ストツバ
一部材■の係止孔@に係合せしめると共に、他端部(a
7b)を前記回動部材02の内壁に弾力当接するように
形成する。In addition, the reference numeral (capital) in the figure represents a torsion coil spring that is inserted into the fixed shaft (101) and for biasing the rotating member α2 to rotate in the direction of arrow T in FIG. 5 around the fixed shaft, One end a
(87 &) and engage it with the locking hole @ of the stop flange member (■) on the fixed shaft (10) side, and
7b) is formed to resiliently abut against the inner wall of the rotating member 02.
而して、上記各部品の組み付けは、回動部材(12a)
の軸支孔Q7+上方から固定軸(1[1を通挿した後、
この固定軸001に前記捩りコイルバネ(支)を套挿し
つつ該軸00)の異形端■に前記ストッパ一部材(至)
及び第】リール31)を順次嵌着し、=方前記蓋体(1
2’b)の透孔f401 K下方から前記移動部材(4
)に突設せる第J移動軸(11a)を通挿した後、この
第1移動軸(lla)の異形端@に前記第2リール(至
)及び前記ストッパ一部材■を順次嵌着し、更に該軸(
lla)の端部に穿設せる螺孔(241に第2移動軸(
月b)の蝉軸邪(ハ)を螺入する。斯くの如く移動部材
(4)乃至移動軸αB、及び第2リール力)の取り付い
た蓋体(] 2b )を、前記第】リール(21)と前
記第2リール(251に無端ワイヤー圓を懸回しつつ前
記筐体(,12a)の底部開口(151K *着する。Therefore, the above-mentioned parts are assembled using the rotating member (12a).
After inserting the fixed shaft (1 [1) from above the shaft support hole Q7+,
While inserting the torsion coil spring (support) into this fixed shaft 001, the stopper member (to)
and ] reel 31) are fitted one after another, and the lid body (1
2'b) through hole f401K from below.
), after inserting the J-th moving shaft (11a) protruding from the first moving shaft (lla), sequentially fitting the second reel (to) and the stopper member (2) to the irregularly shaped end @ of the first moving shaft (lla), Furthermore, the axis (
The second moving axis (
Screw in the cicada axis (c) of the moon b). In this way, the lid body (] 2b) to which the moving member (4), the moving axis αB, and the second reel force are attached is suspended by an endless wire circle on the reel (21) and the second reel (251). While rotating, attach the bottom opening (151K) of the housing (12a).
次いで前記蓋体の透孔■から締付用ボルトa91を挿入
し、これを前記固定軸(11の軸端部螺孔(20+に螺
締すると共に、前記筐体(12a)の天井部(161に
穿設せる軸支孔08)から実用した前記第2移動軸(3
]b)の先端部に止め輪(43a)を固着することによ
り前記筐体(12a)と前記筐体(] 2b)を一体と
すると共に組み付けを完了する。Next, insert a tightening bolt a91 through the through hole (1) of the lid, screw it into the shaft end screw hole (20+) of the fixed shaft (11), and screw it into the ceiling part (161) of the housing (12a). The second moving shaft (3
] b) By fixing the retaining ring (43a) to the tip of the housing (12a) and the housing (2b), the assembly is completed.
次に本発明の作用について説明する。Next, the operation of the present invention will be explained.
第5図は1第3図のA−A線断面図である。FIG. 5 is a sectional view taken along the line A--A in FIG. 1 and FIG.
上記したように、固定軸(101は、基体(1)乃至自
転車車体と一体関係にあり回転しない。−古註動部材0
3と固定軸U■及び回動部材021と移動軸ODは共に
相対回転可能の嵌合関係にあるから、回動部材αZK外
力を加えると該回動部材α2は固定軸OGまわりを自由
に回動する。しかしながら前記固定軸001と前記移動
軸(111は、双方に一体的に取り付けた第一リール(
21)及び第2リール(251ニ無端ワイヤー(141
を懸回する乙さにより連繋されているから、前記回動部
材02が前記固定軸101まわりを回動するも、前記移
動軸(111は、前記固定軸0〔を中心とする円弧軌跡
を描いて移動するのみで自転しない。即ち前記無端ワイ
ヤー圓が存在しない場合、前記回動部材α2を第5図に
示す如く一定角度(■)回動せしめると、前記移動軸0
υ−も前記角度と同角度釦゛自転する筈゛であるが、本
発明においては前記無端ワイヤー圓の作用により、前記
移動軸a11は前記回動部材[121の回動き連動して
該回動部材aカの回動角度(o)と同一角度逆転するた
め、結果的に移動軸CII) let自転しないのであ
る。従って、該移動軸αDと一体関係にある移動部材(
4)及びテンショナーf71 +x 、フリーホイール
(F)の各スプロケット(s、)(si)・・・に対し
常に平行を維持しつつハブ軸方向に移動することが可能
となるのである。尚、第6図は上記原理を更に模式化し
た説明図である。As mentioned above, the fixed shaft (101) is integral with the base (1) or the bicycle body and does not rotate.
3 and the fixed axis U■ and the rotating member 021 and the moving axis OD are both in a relatively rotatable fitting relationship, so when an external force is applied to the rotating member αZK, the rotating member α2 freely rotates around the fixed axis OG. move. However, the fixed shaft 001 and the moving shaft (111) are connected to the first reel (111) integrally attached to both.
21) and the second reel (251) and the endless wire (141
Since the rotating member 02 rotates around the fixed axis 101, the moving axis (111) draws an arcuate locus centered on the fixed axis 0. In other words, if the endless wire circle does not exist, if the rotating member α2 is rotated by a certain angle (■) as shown in FIG.
υ− is also supposed to rotate at the same angle as the above angle, but in the present invention, due to the action of the endless wire circle, the movement axis a11 is rotated in conjunction with the rotation of the rotation member [121]. Since the rotation angle (o) of member a is reversed by the same angle, as a result, the movement axis CII) does not rotate. Therefore, the moving member (
4), the tensioner f71 +x, and each sprocket (s, ) (si) of the freewheel (F), making it possible to move in the hub axis direction while always maintaining parallelism. Incidentally, FIG. 6 is an explanatory diagram further schematizing the above principle.
又、本発明に係る外装変速機は、上記したように回動部
材02ニ外力を加えてこれを直接的に回動するのみで変
速操作を行いうるため、操作ワイヤー@)による牽引操
作手段を従来例に比して極めて簡単化することができる
。即ち、第1図、第2図、第7図及び第8図に示すよう
に、単一のワイヤー(W)の端部を回動部材0zの外表
面遺品に止着し、これを牽引、弛緩することにより変速
操作を行うことができる。Furthermore, as described above, the external transmission according to the present invention can perform a gear change operation simply by applying an external force to the rotary member 02 and directly rotating it, so that the traction operation means by the operation wire @) is required. This can be extremely simplified compared to the conventional example. That is, as shown in FIGS. 1, 2, 7, and 8, the end of a single wire (W) is fixed to the outer surface of the rotating member 0z, and this is pulled and By relaxing, a gear shifting operation can be performed.
前記したように回動部材α2は、固定軸α01Vc套挿
せる前記捩りコイルバネ@により常時第7図、第8図に
おける矢印T方向に回動附勢されている。従って、第7
図に示す状態から前記捩りコイルバネ(9)の弾力に抗
してワイヤー伎)を矢印f方向に牽引すると回動部材口
2は矢印り方向に回動して第8図に示す状態となる。次
いで第8図に示す状態からワイヤー(W)の牽引力を弛
めると回動部材+121は前記捩りコイルバネ−の蓄勢
力により矢印T方向に復帰回動し、これとともvc11
71記ワイヤーC)は矢印r方向に移動して第7図に示
す状態に戻る。As described above, the rotating member α2 is always urged to rotate in the direction of the arrow T in FIGS. 7 and 8 by the torsion coil spring @ into which the fixed shaft α01Vc is inserted. Therefore, the seventh
From the state shown in the figure, when the wire (2) is pulled in the direction of arrow f against the elasticity of the torsion coil spring (9), the rotating member opening 2 rotates in the direction of arrow f, resulting in the state shown in FIG. Next, when the pulling force of the wire (W) is relaxed from the state shown in FIG.
71 wire C) moves in the direction of arrow r and returns to the state shown in FIG.
このように本発明においては、牽引操作用ワイヤー(W
)として従来例の如く二重ワイヤーによることなく単一
のワイヤー伸)を用いることができるので、従来例にお
けるインナーワイヤーとアウターワイヤーの相互摺動抵
抗がなくなり・従って操作の軽さは飛躍的に向上する。In this way, in the present invention, the traction operation wire (W
), it is possible to use a single stretched wire instead of using double wires as in the conventional example, eliminating the mutual sliding resistance between the inner wire and the outer wire in the conventional example, and thus dramatically reducing the ease of operation. improves.
尚、前記ワイヤー(W)の端部を止着する方策として図
示する如く円弧状リール(41)を利用すればワイヤー
(W)の牽引量に比例した回動部材azO回動量を得る
ことができるので好都合である。In addition, as a measure for fixing the end of the wire (W), if an arcuate reel (41) is used as shown in the figure, it is possible to obtain the amount of rotation of the rotating member azO that is proportional to the amount of pulling of the wire (W). Therefore, it is convenient.
又−1第7図において、移動軸(111側ストツパ一部
材■とトップ側ストッパーボルト(2)が互いに当接し
て回動部材(1zのトップ側回動端を規定し、第8図に
おいて、固定軸α〔側ストッパ一部材器とロー側ストッ
パーボルトCl1lが互いに当接して回動部材02のロ
ー側回動端を規定している。斯くして前記2つのストッ
パーボルト((11CI21の螺進量を調節することに
より回動部材02の回動可能範囲を所望量に定めること
ができる。In addition, in -1 Fig. 7, the moving shaft (111 side stopper member ■) and the top side stopper bolt (2) abut each other to define the top side rotation end of the rotating member (1z), and in Fig. 8, The fixed axis α [side stopper component and the low side stopper bolt Cl1l contact each other to define the low side rotation end of the rotating member 02. In this way, the two stopper bolts ((11CI21) By adjusting the amount, the rotatable range of the rotating member 02 can be set to a desired amount.
第9図及び第10図は、固定軸(10)と移動軸ODと
を無端連続体(131K連□繋せしめる手段←)の他の
実施例を示すもので、第9図に示す例は、固定軸Q(I
及び移動軸0υに夫々同径の巻き胴f4Z [431を
一体的に取り付けると共に、これら巻き胴IZ +43
1に無端ベルト(441を懸回することにより前記手段
←)を構成した例を示す0木実施例の如く、前記巻き胴
f421 +431及び前記無端ベルト(柵の相互接触
面に夫々互いに嵌合可能な凹凸を設けれは、前記無端ベ
ルト(441が前記巻き胴+421 (43上をスリッ
プしないので好都合である。一方、第10図に示す例は
、固定軸Q(I及び移mM(IIIK夫々同一歯数の歯
車+451 +461を取り付けると共に、これら両歯
車+451 +461に無端チェーン(4ηを懸回する
ことにより前記手段(M)を構成した例を示す。上記第
9図及び第10図に示す例も、前記第8図乃至第8図に
示す例と同様の作用を営むことは勿論である。9 and 10 show other embodiments of the endless continuous body (means for connecting the fixed shaft (10) and the moving shaft OD) (means for connecting the fixed shaft (10) and the moving shaft OD). Fixed axis Q(I
A winding drum f4Z [431] of the same diameter is integrally attached to the moving axis 0υ, and these winding drums IZ +43
1 shows an example in which the endless belt (441) is constructed by hanging the endless belt (441), the winding drum f421 +431 and the endless belt (which can be fitted to the mutual contact surfaces of the fence, respectively) Providing the unevenness is advantageous because the endless belt (441) does not slip on the winding drum +421 (43).On the other hand, in the example shown in FIG. An example is shown in which the means (M) is constructed by attaching gears with the number of teeth +451 to +461 and suspending an endless chain (4η) between these gears +451 to +461.The examples shown in FIGS. 9 and 10 above are also shown. , of course, operates in the same manner as the example shown in FIGS.
第11図及び第12図は、本発明を自転車用前変速機に
適用した例を示す。11 and 12 show an example in which the present invention is applied to a bicycle front transmission.
即ち、自転車フレームのシートパイプ(H) K ti
t付バンド(1)Kより固定した基体(101)K固定
軸(] ] O)を一体重に設ける一方、チェーンガイ
ドプレート(107)と一体重に設けた移動部材(10
4)に移動軸(111)を設け、これら固定軸(110
)と移動軸(月1)を上記後変速機に係る実施例と同様
に回動部材(112)及び無端連続体(図示略)を用い
た連繋手段等により連携せしめるのである。而して、前
記回動部材(月2)の遺品に端部を止着した操作ワイヤ
ー(W)を牽引し或いは弛緩させれは、前記回動部材(
112)は前記固定軸(]10)回りを回動すると共に
、移動部材(104)乃至チェーンガイドプレート(1
07)はチェーンスブロケツ) (S)と平行を維持し
つつ左右に移動する0尚上述した実施例において、前記
回動部材021(112) lま筆状に形成しているが
、該回動部材oz(112)の形状は種々設計変更可能
であり、密閉鎖状に限定されるものではなく、例えは解
放状の筐体或いは断面コテ状の部材を用いることもでき
る。That is, the seat pipe (H) of the bicycle frame K ti
The base body (101) fixed from the T-attached band (1) K is provided integrally with the fixed shaft (] ] O), while the movable member (10) provided integrally with the chain guide plate (107).
4) is provided with a moving axis (111), and these fixed axes (110
) and the moving shaft (month 1) are linked together by a linking means using a rotating member (112) and an endless continuum (not shown), as in the embodiment related to the rear transmission described above. Therefore, in order to pull or relax the operating wire (W) whose end is fixed to the remains of the rotating member (Moon 2), the rotating member (2) is pulled or loosened.
112) rotates around the fixed shaft (10), and also rotates from the movable member (104) to the chain guide plate (10).
07) moves left and right while maintaining parallel to the chain chain block (S). In the above-mentioned embodiment, the rotating member 021 (112) is formed in a brush shape. The shape of the moving member oz (112) can be modified in various ways, and is not limited to a closed shape; for example, an open housing or a member with a trowel-shaped cross section can also be used.
又、前記捩りコイルバネ(支)は、回動部材azを第5
図り方向に回動附勢するように形成することも熱論可能
であり、且つ該コイルバネ啼を移動軸(Ill@に介挿
することもまた可能である。Further, the torsion coil spring (support) rotates the rotating member az to the fifth position.
It is also possible to form the coil spring so as to be biased to rotate in the direction of rotation, and it is also possible to insert the coil spring into the moving shaft (Ill@).
以上述へたように、本発明に係る自転車用外装変速機は
、基本的には基体(1)K固定軸GO+を、移動部材(
4)に移動軸011を夫々設け、これら両軸α1(Il
lを一定間隔を置き且つ回転可能に軸支する回動部材(
13により連携するというこれまでにない全く新しい構
成を採用したことにより、前記回動部材O2を直状に形
成してこれの内部に固定軸(1α、移動軸(1υ等の部
品を全て内包することか可能となったのであり、その結
果、内部に雨水、泥、塵等が侵入するのを完全に遮断し
て変速機の保守点検を一切不要とじつる他、例えは前記
直状回動部材ahの内部を密封してこれにグリース等の
潤滑剤を注入オれば、変速機の極めて円滑な作動を半永
久的に保証することができる。As mentioned above, the bicycle exterior transmission according to the present invention basically connects the base (1) K fixed shaft GO+ to the moving member (
4) are provided with moving axes 011, and these two axes α1 (Il
A rotating member that rotatably supports the l at regular intervals (
By adopting a completely new configuration that has never been seen before, in which the rotating member O2 is linked by 13, the rotating member O2 is formed in a straight shape, and all parts such as the fixed shaft (1α) and the moving shaft (1υ) are contained inside it. As a result, it has become possible to completely block rainwater, mud, dust, etc. from entering the inside, eliminating the need for any maintenance and inspection of the transmission. By sealing the inside of the ah and injecting a lubricant such as grease into it, extremely smooth operation of the transmission can be guaranteed semi-permanently.
又、前記固定軸00と前記移動軸01)は、これら両軸
α01 (111K無端連続体(131を懸回すること
によって連繋しであるので、前記回動部材a21を直接
回動せしめることにより前記移動軸αBと一体関係にあ
るテンショナー(7)をフリーホイール(乃の各スプロ
ケットと平行を維持しつつハブ軸方向に移行せしめるこ
々ができ、この結果操作ワイヤー(W)は従来例の如く
二重ワイヤーを用いることなく単一のワイヤーを用いれ
ばよいので操作性(操作の軽さ)は飛躍的に向上する。Further, the fixed shaft 00 and the moving shaft 01) are connected by hanging the two shafts α01 (111K endless continuous body (131), so the rotation member a21 can be directly rotated to The tensioner (7), which is integrally connected to the moving axis αB, can be moved in the direction of the hub axis while maintaining parallel to each sprocket of the freewheel (no), and as a result, the operating wire (W) can be moved in two directions as in the conventional example. Since a single wire can be used without using heavy wires, operability (lightness of operation) is dramatically improved.
第1図は、本発明の一実施例たる自転車用後変速機を自
転車フレームに取り付けた状態を示す正面図、第2図は
、第1図の一部断面側面図、第3図は主要部の内部機構
を示す断面図、第4図は主要部品を分解した状態で示す
斜視図、第5図は第3図のA−A線断面図、第6図、第
7図及び第8図は作用説朗図、第9図及び第10図は内
部機構の他の実施例を示す断面図、第】1図は本発明を
自転車用前変速機に適用した例を示す平面図、第12図
は第11図の側面図、第1s図は、従来例たる平行四辺
形パンタグラフ式変速機の主要構成を示す平面図である
。
(1) (101) 、、、基体 +4) (104
) ・・・移動部材(7)・・・テンショナー (1
0)(110)・・・固定軸(111(m)・#動軸a
?J<、】1z)・”am%材(13・・・無端連続体
(1Φ・・・、無端ワイヤーr21)・・・ワイヤ
ーリール(第1リール)(至)・・・ワイヤーリール(
第2リール)(Q (431・・・巻胴 (441・
・・無端ベル) (451+461・・・歯車(4
71・・・無端チェーン (107)・・・チェーン
ガイドプレート に)・・・手段
出願人 マエダ工業株式会社
代理人 弁理士 樋 日豊 治
ほか2名
第3図
第4図
第S図
第7図
1./′さ
第8図
第を図
第tO図
第11図
II
第12図
第13図Fig. 1 is a front view showing a bicycle rear derailleur according to an embodiment of the present invention attached to a bicycle frame, Fig. 2 is a partially sectional side view of Fig. 1, and Fig. 3 is a main part. 4 is a perspective view showing the main parts in an exploded state, FIG. 5 is a sectional view taken along line A-A in FIG. 3, and FIGS. 6, 7, and 8 are 9 and 10 are cross-sectional views showing other embodiments of the internal mechanism, FIG. 1 is a plan view showing an example in which the present invention is applied to a bicycle front transmission, and FIG. 12 is a cross-sectional view showing another embodiment of the internal mechanism. The side view of FIG. 11 and FIG. 1s are plan views showing the main structure of a conventional parallelogram pantograph type transmission. (1) (101) ,,,Base +4) (104
)...Moving member (7)...Tensioner (1
0)(110)...Fixed axis (111(m)/#Moving axis a
? J<, ]1z)・”am% material (13...Endless continuum (1Φ..., endless wire r21)...Wire reel (1st reel) (to)...Wire reel (
2nd reel) (Q (431... winding drum (441)
...Endless bell) (451+461...Gear (4
71...Endless chain (107)...Chain guide plate)...Applicant Maeda Kogyo Co., Ltd. Agent Patent attorney Osamu Hitoyo Hito and 2 others Figure 3 Figure 4 Figure S Figure 7 1. /' Figure 8 Figure tO Figure 11 Figure II Figure 12 Figure 13
Claims (4)
プーリ及びテンションプーリを有して成るテンショナー
(7)若しくはチェーンカイトプレー) (107)を
固設せる移動部材(4)K移動軸(lDを一体的に設け
、これら固定軸(101及び移動軸+113を夫々回転
可能に軸支する回動部材a21により前記両軸1010
1]間を一定距離に保持す不一方、前記両軸α01(I
IIK無端連無端連続全03して前記 3両軸を連撃
せしめる手段(M)を設けることにより前記回動部材α
2が前記固定軸00)回りを回動しても前記移動軸(1
11は自転しないようK11l成した自転車用外装変速
機。(1) A fixed shaft 0α is integrally provided on the base body (1), and a movable member (4) K movement on which a tensioner (7) or chain kite play (107) comprising a guide pulley and a tension pulley is fixedly attached. The two shafts 1010 are integrally provided with a shaft (1D), and a rotating member a21 rotatably supports these fixed shafts (101 and moving shaft +113), respectively.
1] While maintaining a constant distance between the two axes α01 (I
IIK endless series By providing a means (M) for making the three shafts hit in succession, the rotating member α
2 rotates around the fixed axis 00), the moving axis (1
11 is an exterior derailleur for bicycles made of K11L to prevent rotation.
のワイヤーリール(211(至)を設け、且つこれらワ
イヤーリール(211(251K無端ワイヤー(1句を
懸回することにより前記手段(M)を構成した特許請求
の範囲第1項に記載の自転車用外装変速機。(2) A wire reel (211 (to)) of the same diameter is provided on each of the fixed axis GO) and the moving axis GO, and these wire reels (211 (251K endless wire) are suspended by The external bicycle transmission according to claim 1, which constitutes the means (M).
径の巻胴1421 (434を設け、且つこれら巻胴に
無端ベルト(441を懸回することにより前記手段(M
)を構成した特許請求の範囲第1項に記載の自転車用外
装変速機。(3) The means (M
) The bicycle external transmission according to claim 1, comprising:
夫々に同一歯数の歯車+451 (461を取り付け、
且つこれら歯車f451 (46+ K無端チェーン(
471を懸回することにより前記手段(M)を構成した
特許請求の範囲第1項に記載の自転車用外装変速機。(4) A gear +451 (461) having the same number of teeth is attached to each of the fixed axis uO) and the moving axis (111,
And these gears f451 (46+ K endless chain (
471. The external bicycle transmission according to claim 1, wherein the means (M) is constructed by suspending the transmission.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16772781A JPS5867587A (en) | 1981-10-19 | 1981-10-19 | Sheath transmission for bicycle |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16772781A JPS5867587A (en) | 1981-10-19 | 1981-10-19 | Sheath transmission for bicycle |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5867587A true JPS5867587A (en) | 1983-04-22 |
JPS614713B2 JPS614713B2 (en) | 1986-02-12 |
Family
ID=15855037
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16772781A Granted JPS5867587A (en) | 1981-10-19 | 1981-10-19 | Sheath transmission for bicycle |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5867587A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6430898A (en) * | 1987-07-02 | 1989-02-01 | Campagnolo Spa | Rear section derailer for bicycle gear |
-
1981
- 1981-10-19 JP JP16772781A patent/JPS5867587A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6430898A (en) * | 1987-07-02 | 1989-02-01 | Campagnolo Spa | Rear section derailer for bicycle gear |
Also Published As
Publication number | Publication date |
---|---|
JPS614713B2 (en) | 1986-02-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4838122A (en) | Speed change device for bicycle | |
AU2007291557B2 (en) | Operating and mounting system for a window covering | |
TW202030120A (en) | Damper for a bicycle component | |
US5924950A (en) | Even increment, non-overlapping bicycle transmission | |
US3730012A (en) | Speed-change mechanism for a bicycle | |
US20180346058A1 (en) | Damper for a bicycle component | |
US4469479A (en) | Bicycle derailleur | |
SK172199A3 (en) | Motion sensor for use with a bicycle sprocket assembly | |
US5556354A (en) | Shifting arrangement for a change gear drive in multispeed hubs for bicycles | |
TW201500260A (en) | Bicycle derailleur | |
KR19990071896A (en) | Power inverter of bicycle | |
JPS5853587A (en) | Sheath transmission for bicycle | |
JPS60229885A (en) | Transmission mechanism | |
US5378201A (en) | Multi-geared bicycle transmission assembly comprising internal gear sets | |
US8100810B2 (en) | Bicycle internal hub transmission with helical gear | |
JPS5867587A (en) | Sheath transmission for bicycle | |
JPH0244635Y2 (en) | ||
EP0763463B1 (en) | Speed change operating device for a bicycle | |
US2839939A (en) | Change-speed gear | |
FR2589747A1 (en) | MECHANISM FOR DELAYED MOTION FIGURINE-TOY | |
US4831889A (en) | Conical worm gear for a multi-speed bicycle drive mechanism | |
JPS5867586A (en) | Sheath transmission for bicycle | |
JPH0140792Y2 (en) | ||
JPS6117716B2 (en) | ||
JP6141333B2 (en) | Camshaft phase adjustment device |