JPS59206278A - Derailer for bicycle - Google Patents

Derailer for bicycle

Info

Publication number
JPS59206278A
JPS59206278A JP8143083A JP8143083A JPS59206278A JP S59206278 A JPS59206278 A JP S59206278A JP 8143083 A JP8143083 A JP 8143083A JP 8143083 A JP8143083 A JP 8143083A JP S59206278 A JPS59206278 A JP S59206278A
Authority
JP
Japan
Prior art keywords
spring
operating
operating member
feeding means
movable 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.)
Pending
Application number
JP8143083A
Other languages
Japanese (ja)
Inventor
正士 長野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shimano Inc
Original Assignee
Shimano Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shimano Industrial Co Ltd filed Critical Shimano Industrial Co Ltd
Priority to JP8143083A priority Critical patent/JPS59206278A/en
Priority to US06/605,697 priority patent/US4626229A/en
Priority to FR8407055A priority patent/FR2545899B1/en
Priority to DE3417146A priority patent/DE3417146C2/en
Publication of JPS59206278A publication Critical patent/JPS59206278A/en
Pending legal-status Critical Current

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  • Lubricants (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】[Detailed description of the invention]

本発明は自転車用ディレーラ−1詳しくはベース部材と
、自転車に装着する多段スプロケット装置の軸方向に移
動可能とした可動部材と、該可動部材を前記多段スプロ
ケット装置の軸方向に移動させる揺動リンク形式の送り
手段と、前記可動部材に支持され1駆動チエンご多段ス
プロケット装置の一つのスプロケットに案内するガイド
機構とを備えた自転車用ディレーラ一番こ関する。 一般に、此種ディレーラ−には、リターンばねを備え、
操作ワイヤの牽すI操作部こよる変速時は、前記リター
ンばねに抗して前記可動部材を往移動させ、また前記操
作ワイヤの緩め操作lζよる変速時は、前記リターンば
ねの復元力により前記可動部材を復移動させるごとく構
成されている。 しかして前記リターンばねは、中間を巻回し両端を前記
巻回部の接線方向外方に延長したばねを用い、このばね
の巻回部を、前記送り手段を構成する主としてリンク部
材とベース部材又は可動部材とを連結する枢支軸周りに
保持すると共に、前記ばねの両端部を、前記ベース部材
又は可動部材とリンク部材とに弾接させている。 所で、前記リターンばねの装着は、例えば巻回WSを前
記枢支軸周りに保持下ると共に、前記ばねの一端を前記
ベース部材又は可動部材に接当させた状態で、前記ばね
の他端側を前記巻回部が縮径する方向に捻って−ばね全
体を撓ませ、前記他端?前記リンク部材1こ弾接させる
ことにより装着している。 所が、以上の如く講成下る従来のディレーラ−の場合、
前記リターンばねを撓まぜて装着下るときに必要な捻り
ストロークと、前記送り手段への初期荷重とが必然的に
決るため、前記リターンばねを設計する場合、前記捻り
ストローク及び初期荷重に対応したばね定数のばねを用
いることになり、その結果、リターンば゛ねの特性が特
定され、このすダーフばねの撓み量に対するばね力の変
化量が大きく、変速段数が増大する程、ばねの復元力が
大きくなるのである。従って、多段スプロケット装置の
最大径スプロケットにチェノを掛換えるときにおける前
記リターンばねの復元力が非常に大きく、前記リターン
ばねを撓ませて変速操作する操作レバーの操作力が大と
なり、変速操作性が悪かったのである。 本発明の目的は、リターンばねの撓み量に対下るばね力
の変化量を小さくでき、操作力、特に大径側スプロケッ
トへの掛換時に必要な操作力を減少できながら、しかも
多段スプロケット装置に掛設する駆動チェノが駆動して
いない場合など、変速時に作用する変速抵抗が通常の抵
抗、即ち駆動チェノが駆動している場合の変速抵抗より
大きいときでも変速操作を行なうことができ、この操作
力を蓄勢できるようにしたものである。 本発明は、ベース部材と、自転車に装着する多段スプロ
ケット装置の軸方向−こ移動可能とした可動部材と、該
可動部材を前記多段スプロケット装置の軸方向に移動さ
せる揺動リンク形式の送り手段と、前記可動部材に支持
され、駆動チェノを多段スプロケット装置の一つのスプ
ロケットに案内するガイド機構とを備えた自転車用ディ
レーラ−であって、外部操作で動作する操作部材を設け
て、該操作部材を、前記送り手段の中間に揺動可能に支
持すると共に、前記操作部材と前記ベース部材との間に
、前記操作部材の支持点周りに保持し、前記操作部材を
前記送り手段に弾接するばねを介装し、該ばねを介して
前記操作部材を送り手段に連動させ、前記はねの一端側
を前記操作部材の動作に、また前記ばねの保持部を前記
送り手段の動作にそれぞれ追従して変位させて、前記ば
ねの撓み量に対するばね力の変化量を小さくでき、かつ
変速抵抗が通常の抵抗より大きい場合は、前記ばねを撓
ませて変速操作力を蓄勢でき、確実に変速操作を行なう
ことができるようにしたのである。 次に本発明の実施例を図面番こ基づいて脱刷するO 図面に°示したディレーラ−は、ベース部材(1)、1
対のリンク部材(2)、(3)及び可動部材(4)とか
ら成るリンク機構を備え、前記可動部材(4)に、多段
スプロケット装置の各スプロケットへ駆動チェノご案内
するガイド機構(5)を設け、前記可動部材(4)のベ
ース部材(1)に対する移動により、前記チェノを前記
スプロケットの一つから他の一つに掛換えるように構成
したものである。 又、図面に示したものは、前記ベース部材(1)を自転
車の後輪ハブを支持するバツクホーク(図示せず)に装
着して用いるリヤディレーラ−であって、前記ガイド機
構(5)は、前記可動部材(4]に第1枢軸(50]を
介して揺動自由に支持する支持体
The present invention provides a bicycle derailleur-1. Specifically, the present invention includes a base member, a movable member movable in the axial direction of a multi-stage sprocket device mounted on a bicycle, and a swing link that moves the movable member in the axial direction of the multi-stage sprocket device. The present invention relates to a bicycle derailleur comprising a feeding means of the same type and a guide mechanism supported by the movable member and guiding one drive chain to one sprocket of a multi-stage sprocket device. Generally, this type of derailleur is equipped with a return spring.
When changing gears by using the I operation section pulled by the operating wire, the movable member is moved forward and backward against the return spring, and when changing gears by loosening the operating wire lζ, the restoring force of the return spring causes the movable member to move forward and backward against the return spring. The movable member is configured to move backward. Accordingly, the return spring is a spring whose middle part is wound and both ends are extended outward in the tangential direction of the wound part, and the wound part of this spring is connected mainly to the link member and the base member constituting the feeding means. The spring is held around a pivot shaft connecting the movable member, and both ends of the spring are brought into elastic contact with the base member or the movable member and the link member. By the way, the return spring is attached, for example, by holding the winding WS around the pivot shaft, and with one end of the spring in contact with the base member or the movable member, and then attaching the other end of the spring to the base member or the movable member. Twist the coil in the direction in which the diameter of the wound portion decreases to flex the entire spring, and then tighten the other end of the spring. The link member 1 is attached by making elastic contact with the link member 1. However, in the case of a conventional derailleur that is taught as above,
Since the twisting stroke necessary when bending and lowering the return spring and the initial load on the feeding means are inevitably determined, when designing the return spring, it is necessary to select a spring that corresponds to the twisting stroke and initial load. A constant spring is used, and as a result, the characteristics of the return spring are specified, and as the amount of change in spring force with respect to the amount of deflection of this dwarf spring increases, and the number of gears increases, the restoring force of the spring increases. It gets bigger. Therefore, when changing the chain to the largest diameter sprocket of the multi-stage sprocket device, the restoring force of the return spring is extremely large, and the operating force of the operating lever that deflects the return spring to perform gear shifting becomes large, resulting in poor gear shifting operability. It was bad. It is an object of the present invention to reduce the amount of change in spring force relative to the amount of deflection of the return spring, reduce the operating force, especially the operating force required when changing over to a large diameter sprocket, and yet be able to provide a multi-stage sprocket device. Even when the gear shifting resistance that acts during gear shifting is greater than the normal resistance, that is, the gear shifting resistance when the driving chain is being driven, such as when the hanging drive chain is not being driven, the gear shifting operation can be performed. It is designed to store power. The present invention includes a base member, a movable member that is movable in the axial direction of a multi-stage sprocket device mounted on a bicycle, and a swing link type feeding means for moving the movable member in the axial direction of the multi-stage sprocket device. , a bicycle derailleur comprising a guide mechanism supported by the movable member and guiding the driving chain to one sprocket of the multi-stage sprocket device, the bicycle derailleur comprising an operating member operated by an external operation, the operating member being operated by an external operation. , a spring is swingably supported in the middle of the feeding means, and is held between the operating member and the base member around a support point of the operating member, and brings the operating member into elastic contact with the feeding means. interposed, the operating member is interlocked with the feeding means via the spring, one end side of the spring follows the movement of the operating member, and the holding part of the spring follows the movement of the feeding means. If the amount of change in spring force relative to the amount of deflection of the spring can be reduced by deflecting the spring, and if the shift resistance is greater than normal resistance, the shift operation force can be stored by deflecting the spring, and the shift operation can be performed reliably. He made it possible for them to do so. Next, the embodiments of the present invention will be reprinted based on the drawing numbers.
A guide mechanism (5) comprising a link mechanism consisting of a pair of link members (2), (3) and a movable member (4), and guiding the driving chain to each sprocket of the multi-stage sprocket device to the movable member (4). , and is configured so that the chino can be switched from one of the sprockets to another by moving the movable member (4) relative to the base member (1). Also, what is shown in the drawings is a rear derailleur that is used by attaching the base member (1) to a backhawk (not shown) that supports the rear wheel hub of a bicycle, and the guide mechanism (5) includes: a support body that freely swings and supports the movable member (4) via a first pivot (50);

【51】と、前記第1
枢軸(50)と同軸状に配置され、前記支持体
[51] and the first
arranged coaxially with the pivot (50), said support

【51】
に固定の筒軸(52)を介して回転自由に支持するガイ
ドプーリー(56)と、前記支持体(51)の遊端に第
2枢軸(54]を介して回転自由に支持するテンション
プーリー(55)とから成り、前記第1枢軸(50)の
軸周り番こけ、前記チェノのチェノテンションを与える
方向に、前記支持体(51]を付勢するテンションばね
(56)を設けて、その一端を前記可動部材(4)に、
他端を前記支持体(51)に係止している。 又、前記可動部材(4)は、第2図のごとくその−側に
円形内腔邪(41)を設けて、この内腔邪(41)の中
心部に前記第1枢軸(50)及び筒軸(52)を突入さ
せて、固定ボルト(57)により固定している。 図面に示した実施例は、以上の如く構成下るディレーラ
−において、前記ベース部材(1)gコ、本発明の送り
手段
[51]
a guide pulley (56) rotatably supported via a cylindrical shaft (52) fixed to the support body (51); and a tension pulley (56) rotatably supported via a second pivot (54) at the free end of the support body (51). 55), a tension spring (56) is provided for biasing the support body (51) in a direction that applies tension around the axis of the first pivot (50) and tension of the chain; one end to the movable member (4),
The other end is locked to the support (51). Further, the movable member (4) is provided with a circular lumen (41) on its negative side as shown in FIG. The shaft (52) is pushed in and fixed with a fixing bolt (57). In the embodiment shown in the drawings, in the lower derailleur constructed as described above, the base member (1) g and the feeding means of the present invention are provided.

【6】を構成するクラッチレバ−(60)Y枢着し
て該クラッチレバ−(60]の中間に操作部材(7)を
揺動可能に支持下ると共に、前記操作す%材(7)とベ
ース部材(1]との間に、前記操作部材(7)の支持点
周りに保持しS@記操作部材(7)を前記クラッチレノ
ぐ−(60]に弾接するばね(8)を介装し、該ばね
The clutch lever (60) constituting [6] is pivotally connected to Y, and the operating member (7) is swingably supported in the middle of the clutch lever (60), and the operating member (7) and the operating member (7) A spring (8) is interposed between the base member (1) and the spring (8) that holds the operating member (7) around the support point and brings the operating member (7) into elastic contact with the clutch lever (60). and the corresponding spring


8】を介して前記操作部材(7)をクラッチレバ−(6
0′)lこ連動させ、前記操作部材
[
8], the operating member (7) is connected to the clutch lever (6).
0') The operation member is interlocked with the

【7】番こ操作ワイ
ヤ(W)の固定具(9)を、また、前記ベース部材(1
)に前記ワイヤ(W)を案内するアウター筒(0]の支
持具(10)をそれぞれ設けると共番こ、前記クラッチ
レバ−(60)の先端を、前記可動部材(4]側に延長
し、この延長部に対向する前記可動部材(4)の対向部
位に、前記第1枢軸(50)と同方向に延び、前記第1
枢+111(50)の軸方向に移動可能なブツシュロッ
ド(11]を設け、そして前記可動部材(4)とガイド
機構(5]との間に、前記クラッチレバ−(60)及び
ブツシュロッド(11)K介して作動する制御体(12
)と、該制御体(12]の作動により保合下るクラッチ
(13)とを設けたものである。 前記送り手段(6)を構成する前記クラッチレバ−(6
0]は、例えば前記ベース部材(1)への支持位置から
前記可動部材(4)に向って延びる杆状に形成下るので
ある。 又、前記操作部材(7]は、第6図に示す如<前記クラ
ッチレバ−(60]の動作面と直交する方向に延びる軸
体(71)と、該軸体(71)と直交する方向に延びる
操作腕(72)と、この操作腕(72)の中間から前記
クラッチレバ−(60)の方向に延びる連動腕(76]
とから構成し、前記軸体(71]の一端を筒軸(14]
を介して前記クラッチレバ−(60)の長さ方向中間に
枢支すると共に、前記連動腕(76)の先端部を前記ク
ラッチレバ−(60)に接触させるのであり、また前記
操作腕
[7] Attach the fixture (9) of the guard operating wire (W) to the base member (1).
) is provided with a support (10) for the outer tube (0) that guides the wire (W), and the end of the clutch lever (60) is extended toward the movable member (4). , extending in the same direction as the first pivot shaft (50), and extending in the same direction as the first pivot shaft (50) at an opposing portion of the movable member (4) facing the extension portion.
A bushing rod (11) movable in the axial direction of the pivot 111 (50) is provided, and the clutch lever (60) and bushing rod (11) K are provided between the movable member (4) and the guide mechanism (5). A control body (12
) and a clutch (13) that is engaged and lowered by the operation of the control body (12).The clutch lever (6) constituting the feeding means (6)
0], for example, is formed in a rod shape extending from a supporting position to the base member (1) toward the movable member (4). As shown in FIG. 6, the operating member (7) includes a shaft (71) extending in a direction perpendicular to the operating surface of the clutch lever (60), and a shaft (71) extending in a direction perpendicular to the shaft (71). an operating arm (72) extending toward the clutch lever (60), and an interlocking arm (76) extending from the middle of the operating arm (72) toward the clutch lever (60).
and one end of the shaft body (71) is connected to a cylinder shaft (14).
The interlocking arm (76) is pivotally supported in the middle in the longitudinal direction of the clutch lever (60) through the clutch lever (60), and the distal end of the interlocking arm (76) is brought into contact with the clutch lever (60).

【72】の先端に前記固定具(9)を取付けるの
である。 又、前記はね(8)は、中間を巻回し、一端(8a)を
前記巻回部
The fixture (9) is attached to the tip of [72]. Moreover, the spring (8) is wound in the middle, and one end (8a) is connected to the winding part.

【8b】の軸線方向外方に、また他端(8C
)を前記巻回部
[8b] outward in the axial direction, and the other end (8C
) to the winding part

【8b】の接線方向外方にそれぞれ延長
したばねを用い、このはね(8)の巻回部(8b)を前
記操作部材(7)の軸体(71)周りに回動自由に保持
すると共に、前記一端(8a]を前記操作部材の操作腕
(72)に回動自由に係止し、また前記他端(80]を
、前記ベース部材(1)に設ける受止部(1a)に弾接
させて、変速操作時、前記ばね
Using springs extending outward in the tangential direction of [8b], the winding portion (8b) of this spring (8) is held freely rotatable around the shaft (71) of the operating member (7). At the same time, the one end (8a) is rotatably locked to the operating arm (72) of the operating member, and the other end (80) is attached to the receiving part (1a) provided on the base member (1). When the spring is in elastic contact with the

【8】の一端(8a]側
を前記操作部材(7)の動作に追従して、また前記巻回
部(8b)を前記クラッチレバ−(60)の動作に追従
してそれぞれ変位させ、前記他端(8C)側の受止部(
1&)との接触位置をずらせて、ばね(8)の撓み量に
対するばね(8)の力の変化量を小さくできるようIこ
するのである。 又、図示した前記ばね
[8] The one end (8a) side is displaced in accordance with the operation of the operating member (7), and the winding portion (8b) is displaced in accordance with the operation of the clutch lever (60). The receiving part on the other end (8C) side (
1 &) so that the amount of change in the force of the spring (8) relative to the amount of deflection of the spring (8) can be reduced. In addition, the illustrated spring

【8】は、撓みによる復元力で前
記可動部材
[8] is the movable member due to the restoring force due to deflection.

【4】を復動させるリターンばねの機能と、
前記チェ2が駆動されていない場合など、操作ワイヤ(
W)を牽引して変速するときに作用する変速抵抗が通常
の抵抗、部ちチェ2が駆動されている場合の変速抵抗よ
り大きいときでも操作ワイヤを操作でき、この操作力を
蓄勢できるようにするセーバーばねの機能とを兼備した
もので、通常の変速抵抗の場合は、操作部材(7)をク
ラッチレバ−(60]に連動させ、また変速抵抗が通常
の抵抗より大きい場合は、前記操作部材(7)を…J記
ばね
[4] The function of the return spring to move back,
When the check 2 is not driven, etc., the operating wire (
Even when the shift resistance that acts when towing W) and shifts gears is greater than the normal resistance or the shift resistance when the part check 2 is being driven, the operating wire can be operated and this operating force can be stored. It has the function of a saver spring that moves the operating member (7) to the clutch lever (60) in the case of normal speed change resistance, and when the speed change resistance is larger than the normal resistance, the Operation member (7)...J mark spring

【8】番こ抗して前記クラッチレ)<  (60)
に対し揺動させ、予め所望の変速段位に切換え、前記大
きな変速抵抗が解除したとき、即ち駆動チェノが駆動し
始めるとき、前記ばね(8]の復元力により前記クラッ
チレバ−(60)を動作させると共に、前記ガイド機構
(5)を、前記操作ワイヤ(W)の操作で予め切換えた
変速段位の位置番こ移動させるのである。 尚、前記制御体(12)は、第4図のごとく前記筒軸(
52]の外径より大径とした内径をもつ筒状とし、その
軸方向一端面番こ周方向に向って軸方向Iこ変位する傾
斜状のカム面(12a)を形成し、他端面にクラッチ突
起(12b)を設けると共lこ、前記ガイドプーリー(
53]の、前記制御体
[8] The above-mentioned clutchle) < (60)
The clutch lever (60) is operated by the restoring force of the spring (8) when the large shift resistance is released, that is, when the drive chain starts to drive. At the same time, the guide mechanism (5) is moved to a predetermined gear position by operating the operating wire (W). Cylindrical shaft (
52] has a cylindrical shape with an inner diameter larger than the outer diameter, and has an inclined cam surface (12a) displacing in the axial direction in the circumferential direction on one end surface in the axial direction, and on the other end surface. In addition to providing the clutch protrusion (12b), the guide pulley (12b) is also provided.
53], the control body

【12】への対向側面には、前記
クラッチ突起(12b)に対向するクラッチ突起(53
a)を設けるのである。 そして、前記制御体(12]は、前記可動部材(4) 
の内腔都(41]であって、前記筒軸(52ンの外周面
外方に、該筒軸(52)の軸方向に沿って移動自由に内
装下ると共に、前記ブツシュロッド(°12)F、前記
制御体(12)のカム面(12a)iこ臨ませ、前記ブ
ツシュロッド
[12] is provided with a clutch protrusion (53) opposite to the clutch protrusion (12b).
A) is provided. The control body (12) controls the movable member (4).
The inner lumen (41) is freely movable along the axial direction of the cylinder shaft (52) outwardly from the outer circumferential surface of the cylinder shaft (52), and the bushing rod (°12) F , the cam surface (12a) of the control body (12) is faced, and the bushing rod

【11】の移動により、前記制御体(12
)7i:@記筒軸(52)の軸方向外方に押出下ごとく
成すのである。 また、前記制御体(12)の外周面には、半径方向外方
に突出するばね受着ガイド(12c)を突設するのであ
り、このガイド(’120)と前記ガイドプーリー(5
3)との間には、前記制御体(12)をN記ブツシュロ
ッド(11)の方向に付勢する戻しばね(15]を介装
するのである。この戻しばね(15)は、同系制御体(
12]ヲ前記ブツシユロツド(11)側に押戻丁もので
あって、つまり、前記制御体(12]及びガイドプーリ
Due to the movement of [11], the control body (12)
)7i: @ It is formed by extruding outward in the axial direction of the cylinder shaft (52). Further, a spring receiving guide (12c) protruding radially outward is provided on the outer circumferential surface of the control body (12), and this guide ('120) and the guide pulley (5
A return spring (15) is interposed between the control body (12) and the N bushing rod (11). (
12] Push back to the bushing rod (11) side, that is, the control body (12) and the guide pulley

【53】に設けるクラッチ突起(12b)、(53a
)間を非咬合状態に維持するものであるが、図面に示し
た実施例では、次の如く設計している。 即ち、前記チェノが多段スプロケット装置の一つのスプ
ロケットに掛設されている状態で、前記スプロケットの
歯の側面と、前記チェノのインナーリンクプレート内面
との間には遊びがあり、前記ガイド機構(5]2軸方向
に移動させるとき、前記チェノは、先ず前記遊びを吸収
する動きをした後、前記スプロケットから離脱して掛換
えるべきスプロケット側へ移動するのであって、図面に
示した実施例では、前記戻しばね(15)を利l紳 用し、前記チェノの掛換時、前記制動体(12)のカム
面+121L)による強制移動に先立ち、前記可動部材
(4]及びガイド機構(5)を前記戻しばね(15)7
i:介して移動させ、前記遊びを吸収下るごとく成して
いるのであって、前記戻しはね(15)のばね力を、前
記チェノの遊びを吸収する動きの移動抵抗より大きくし
ている。 次に以上の如く構成するディレーラ−の作動を第2図及
び第6.7図に基づいて説明する。 第2図に示したものは、可動部材
Clutch projections (12b) and (53a) provided on [53]
) is maintained in a non-occlusal state, and the embodiment shown in the drawings is designed as follows. That is, when the chino is hung on one sprocket of the multi-stage sprocket device, there is play between the side surfaces of the teeth of the sprocket and the inner surface of the inner link plate of the chino, and the guide mechanism (5 ] When moving in two axial directions, the chino first moves to absorb the play, and then detaches from the sprocket and moves toward the sprocket to be replaced. In the embodiment shown in the drawings, By using the return spring (15), when changing the chain, the movable member (4) and the guide mechanism (5) are moved before the braking body (12) is forcibly moved by the cam surface +121L). Said return spring (15) 7
i: The spring force of the return spring (15) is made larger than the movement resistance of the movement of the chino to absorb the play. Next, the operation of the derailleur constructed as above will be explained based on FIG. 2 and FIG. 6.7. What is shown in Figure 2 is a movable member.

【4】及びガイド機構
(5〕が多段スプロケット装置の小径スプロケット側に
位置し、前記ガイド機構(5)で案内される前記チェノ
が前記小径スプロケットに掛換えら°れている状態であ
って、この状態から前記操作ワイヤ(W)を牽引すると
、前記操作部材(7]がはね(8)に抗して第2図時計
方向に揺動し、前記ばね(8)を撓ませる。 このとき、前記チェノが駆動されている場合には、Tl
fU記ばね
[4] and a guide mechanism (5) are located on the small-diameter sprocket side of the multi-stage sprocket device, and the chino guided by the guide mechanism (5) is replaced by the small-diameter sprocket, When the operating wire (W) is pulled from this state, the operating member (7) swings clockwise in FIG. 2 against the spring (8), thereby bending the spring (8). , when the chino is driven, Tl
fU spring

【8】を介して前記クラッチレバ−(60)
が時計方向に揺動し、前記ブツシュロッド
[8] Through the clutch lever (60)
swings clockwise, and the bushing rod

【11】を介
して前記制御体(12]を、前記戻しばね
[11] The control body (12) is connected to the return spring via [11].

【15】に抗
して前記筒軸(52)の軸方向外方に押出下のであって
、前記クラッチレバ−(60)の揺動により、該クラッ
チレバ−(60]に支持した操作部材(7)の支持点が
例えば第5図A位置からB位g+こ変位し、前記はね
[15] is pushed outward in the axial direction of the cylindrical shaft (52), and is supported by the clutch lever (60) due to the swinging of the clutch lever (60). 7) The support point is displaced from position A to position B by g + g in Figure 5, and the above-mentioned


8)は、前記A位置における捻り角(0重)とB位置に
おける捻り角(θ寞)との角度差(θ2−θ1) lこ
見合う分だけ撓むことになり、この(θ霊−01)に見
合う撓み量が前記ばね(8]の復元力となるのである。 従って、多段スプロケット装置の最大径スプロケットに
前記チェ掛換掛換える場合であっても、前記はね(8)
の撓み量番こ対するばね(8]の力の変化量を小さくで
き、前記ばね(8]の復元カーこ打勝つ回転抵抗を付与
する操作レバーの回恢抵抗ご小さくできて、前記操作レ
バーを小さな操作力で軽く操作することができるのであ
る。 そして、前記制御体(12]の押出しにより前記クラッ
チ突起(12a3が係合するのであるが、図面に示した
実施例ではこの係合に先立ち、前記戻しばね(12)を
介して前記可動部材(4]及びガイド機構(5)を移動
させるのである。 即ち、前記ばね(8)は前記操作部材(7)の揺動て殺
され、n+I記可動部材(4]は、前記リンク部材(2
)、(3)を介して自由に移動できる状態となっている
ので、前記戻しばね(15)を介して前記クラッチレバ
−(60)に作用する操作力が前記可動部材(4)及び
ガイド機構(5)番こ伝達されて、前記可動部材(4)
及びガイド機構(5)は前記多段スプロケット装置の大
径側に移動し、前記チェノの小径スプロケットに対する
遊びが吸収されるのである。 この遊びが吸収されると、前記チェノの移動2こ遊び吸
収のための移動抵抗より大きな抵抗が生ずるため、前記
戻しばね(15)は圧縮され、第6図のごとく前記クラ
ッチ突起(12b> ’+  <53a)が係合するの
である。 そして、前記クラッチ(12b)  、  (53&)
が係合すると、前記ガイドプーリー(53]は前、記チ
ェンの駆動で回動しているため、前記制御体(12)が
回転し、該制御体(12)のカム面(31a)に係合す
る前記ブツシュロッド(11)を基に、前記制御体(1
2)が第7図のごとく前記ブツシュロッドt11)jこ
対し移動しようとするのである。 このとき、前記ブツシュロッド(11)は前記クラッチ
レバ−(60)を介して前記操作ワイヤ(W) gこよ
りペース部材(1]に対しロック状態となって固定され
るため、前記可動部材【4)及びガイド機構(5)は、
前記リンク部材(2]、(6]を介して大径側スプロケ
ットに強制的に往動するのである。 この往動番こより、前記ガイド機構【5】に案内される
前記チェノは大径側スプロケットに掛換えられるのであ
る。 そして、前記制御体(12]のガイドプーリー (53
)lこ伴なう回動で、前記可動部材(4)及びガイド機
構(5]とともに移動した後は、前記ブツシュロッド
[
8) is bent by an amount corresponding to the angular difference (θ2-θ1) between the torsion angle (0 fold) at the A position and the torsion angle (θ寞) at the B position, and this (θ-01 ) is the restoring force of the spring (8). Therefore, even when replacing the chuck with the largest diameter sprocket of a multi-stage sprocket device, the spring (8)
The amount of deflection of the spring (8) can reduce the amount of change in the force applied to the spring (8), and the recovery resistance of the operating lever that provides rotational resistance that overcomes the restoring force of the spring (8) can be reduced. The clutch projection (12a3) is engaged by pushing out the control body (12), but in the embodiment shown in the drawings, prior to this engagement, The movable member (4) and the guide mechanism (5) are moved via the return spring (12). That is, the spring (8) is killed by the swinging of the operating member (7), and the The movable member (4) is connected to the link member (2).
) and (3), the operating force acting on the clutch lever (60) via the return spring (15) is applied to the movable member (4) and the guide mechanism. (5) The movable member (4) is
The guide mechanism (5) moves to the large diameter side of the multi-stage sprocket device, and the play of the chino with respect to the small diameter sprocket is absorbed. When this play is absorbed, the return spring (15) is compressed, and the clutch protrusion (12b>' + <53a) is engaged. And the clutch (12b), (53&)
When engaged, since the guide pulley (53) was previously rotated by the drive of the chain, the control body (12) rotates and engages with the cam surface (31a) of the control body (12). Based on the bushing rod (11) that fits together, the control body (1
2) tries to move against the bushing rod t11)j as shown in FIG. At this time, the bushing rod (11) is locked and fixed to the pace member (1) by the operating wire (W) via the clutch lever (60), so that the movable member [4] and the guide mechanism (5),
The chain is forcibly moved forward to the large diameter sprocket via the link members (2) and (6). From this forward movement, the chino guided by the guide mechanism [5] moves toward the large diameter sprocket. The guide pulley (53) of the control body (12)
) After moving together with the movable member (4) and the guide mechanism (5) due to the accompanying rotation, the bushing rod


11】が前記制御体(12]のカム面(12a)の底部
に落込むことになるので、前記制御体(12]は前記戻
しばね(15)の作用で復帰し、前記クラッチレバ−(
60]、ブツシュロッド(11)及び制御体(12]の
位置関係は第2図の原位置に戻るのである。 また、以上の如く大径側スプロケットに掛換えた後小径
側スプロナツ)4こ掛換える場合には、前記操作ワイヤ
(W)をゆるめるのであって、前記ワイヤtwt vゆ
るめると、前記ばねI(8)の作用で前記操作部材(7
〕及びクラッチレバ−(60)が第2図反時計方向に揺
動して前記リンク部材(2]2押し、前記可動部材(4
)及びガイド機構(5)?復動させるのであり、この復
動により、前記チェノは小径側スプロケット番こ掛換工
られるので°ある。 また、前記小径側スプロケットから大径側スプロケット
に掛換える場合、前記チェノが駆動されずに停止してい
る状態で前記操作ワイヤ(W)を牽引すると、前記ばね
(8)が撓んで蓄勢するのであって、前記チェノが駆動
されると前記クラッチレバ−
[
11] falls to the bottom of the cam surface (12a) of the control body (12), so the control body (12) returns under the action of the return spring (15) and the clutch lever (
60], the positional relationship of the bushing rod (11) and the control body (12) returns to the original position shown in Figure 2. Also, after replacing the large diameter sprocket as described above, replace the small diameter sprocket (4). In this case, the operation wire (W) is loosened, and when the wire twt v is loosened, the operation member (7) is loosened by the action of the spring I (8).
] and the clutch lever (60) swings counterclockwise in FIG.
) and guide mechanism (5)? By this double movement, the small diameter side sprocket of the chain is replaced. Further, when changing the sprocket from the small diameter sprocket to the large diameter sprocket, when the operating wire (W) is pulled while the chino is stopped without being driven, the spring (8) is bent and stores energy. When the cheno is driven, the clutch lever

【60)が作動し、前記チ
ェノは前記した動作で大径側スプロケットに掛換えられ
る。 以上説明した実施例は、送り手段【6】としてクラッチ
レバ−(60)を用いたが、このクラッチレバ−(60
)を用いることなく、前記リンク部材(2)又は(3]
を送り手段として用いてもよい。この場合、前記リンク
部材(2)又は(6)の中間に前記操作部材(7]を揺
動可能に支持するのであり、又、前記ガイド機構
60) is operated, and the chino is replaced with the larger diameter sprocket by the above-described operation. In the embodiment described above, the clutch lever (60) was used as the feeding means [6].
) without using the link member (2) or (3)
may be used as a feeding means. In this case, the operating member (7) is swingably supported in the middle of the link member (2) or (6), and the guide mechanism

【5】
として、例えば掛換枠と該掛換枠に支持するガイドプー
リー及びテンションプーリーとから成り、前記掛換枠を
前記可動部材に揺動可能に軸支する既知のものを用いる
のである。 また、前記ワイヤ(W)の固定具
[5]
For example, a known structure is used, which is composed of a hanging frame, a guide pulley and a tension pulley supported by the hanging frame, and in which the hanging frame is pivotably supported on the movable member. Also, a fixture for the wire (W)

【9】は前記操作部材
(7)に設ける他、ベース部材(1)に設け、アウター
筒(0)の支持具(10)を、前記操作部材(7)に設
けてもよい。 以上の如く本発明は、ベース部材と自転車に装着する多
段スプロケット装置の軸方向に移動可能とした可動部材
と、該可動部材を前記多段スプロケット装置の軸方向に
移動させる揺動リンク形式の送り手段と、ガイド機構と
を備えたディレーラ−において、外部操作で動作する操
作部材を設けて、該操作部材を前記送り手段の中間に揺
動可能に支持すると共に、前記操作部材と前記ペース部
材との間番こ、前記操作部材の支持焦眉りに保持し、前
記操作部材を前記送り手段lこ弾接するばねを介装し、
該ばねを介し°C前記操作部材を送り手段と連動させた
から、変速操作時、前記ばねの一端1111を前記操作
部材の動作に、また前記ばねの保持都を前記送り手段の
動作番こそれぞれ追従して変位させて、前記ばねの撓み
量に対するばね力の変化量を小さくでき、例えば前記は
ねに、一段変速に必要な復元力だけあれば変速段数が増
大してもmJ記ばねの復元力を利用しての変速ご確実に
行なうことができるのである。従って、前記ばねに打勝
つ力で変速操作Tる操作レバーの操作力を小さくでき、
多段スプロケット装置の最大径スプロケットに駆動チェ
ノを掛換えるときでも小さな操作力で軽く操作すること
ができ、変速操作性を向上特開昭5a−2o6z78(
6) できるのである。 しかも変速抵抗が通常の抵抗より大きい場合は、前記ば
ねを撓ませて、変速操作方を蓄勢し、確実に変速操作す
ることができるのである。
In addition to being provided on the operating member (7), [9] may be provided on the base member (1), and a support (10) for the outer cylinder (0) may be provided on the operating member (7). As described above, the present invention provides a base member, a movable member that is movable in the axial direction of a multi-stage sprocket device mounted on a bicycle, and a swing link type feeding means that moves the movable member in the axial direction of the multi-stage sprocket device. and a guide mechanism, an operating member operated by external operation is provided, the operating member is swingably supported in the middle of the feeding means, and the operating member and the pace member are a spring is interposed to hold the operating member in a fixed position and bring the operating member into resilient contact with the feeding means;
Since the operating member is interlocked with the feeding means through the spring, during speed change operation, one end 1111 of the spring follows the movement of the operating member, and the holding end of the spring follows the operating number of the feeding means. By displacing the spring, the amount of change in the spring force with respect to the amount of deflection of the spring can be reduced. For example, if the spring has the restoring force necessary for one-speed shifting, even if the number of gears increases, the restoring force of the spring can be expressed in mJ. This allows you to shift gears reliably using the . Therefore, the force that overcomes the spring can reduce the operating force of the operating lever for shifting the gear.
Even when changing the drive chain to the largest diameter sprocket of a multi-stage sprocket device, it can be easily operated with a small operating force, improving shift operability.
6) It can be done. Moreover, when the shift resistance is greater than the normal resistance, the spring is flexed to store energy in the shift operation, and the shift operation can be performed reliably.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は本発明ディレーラ−の実施例を示す正面図、第
2図は1邪切欠底面図、第6図番ま部分拡大断面図、第
4図は制御体のみの斜視図、第5図はばねの動作を示す
説明文、第6図及び第7図は作動状態を示す第2図に対
応した拡大底面図である。 (1)・・・ペース部材 (4)・−・可動部材 (5)・・・ガイド機構 (6]・・・送り手段 (7)・・・操作部材 (8)・・・ばね 代理人 弁理士 津 1)直 久 第31A 第5図 第4■ 2b 手続補正書 1.事件の表示 昭和58年特許願第81430号 2、発明の名称 自転車用ディレーラ− 3、補正をする者 事件との関係 出願人 住 所 大阪府堺市老松町3丁77@地(243)島野
工業株式会社 氏名取諦役社長島野尚三 4代理人 住 所 〒590  大阪府堺市住吉橋町1丁9番9号
米沢ビル5 補正命令の日付 自 発 1、〕明m書中、第14頁第7行目の「変位し、」と和 あるのを下記の都く訂正する。 [変位すると共に、前記ばね(8)の他端(8C)と受
止部
Fig. 1 is a front view showing an embodiment of the derailleur of the present invention, Fig. 2 is a cutaway bottom view, Fig. 6 is a partial enlarged sectional view, Fig. 4 is a perspective view of only the control body, and Fig. 5 Explanatory text showing the operation of the spring, and FIGS. 6 and 7 are enlarged bottom views corresponding to FIG. 2 showing the operating state. (1)...Pace member (4)...Movable member (5)...Guide mechanism (6)...Feeding means (7)...Operation member (8)...Spring agent Patent attorney Shizu 1) Naohisa No. 31A Figure 5 4■ 2b Procedural amendment 1. Description of the case 1981 Patent Application No. 81430 2 Name of the invention Bicycle derailleur 3 Person making the amendment Relationship to the case Applicant Address 3-77 Oimatsucho, Sakai City, Osaka Prefecture @ (243) Shimano Kogyo Address: 5 Yonezawa Building, 1-9-9 Sumiyoshibashi-cho, Sakai-shi, Osaka 590 Date of amendment order From: 1, [Memorandum], page 14 In line 7, the word ``displaced'' and the sum are corrected as follows. [While being displaced, the other end (8C) of the spring (8) and the receiving portion

【1a】との間に相対運動が生じて、前記ばね(8
)の巻回部(8b)が前記クラッチレバ−【60)の揺
動方向と同方向に変位し、」2)同第14頁第14行目
の「でも、」と「前記ばね(8)」との間に下記の文を
加入する。 [クラッチレバ−(60)の動作に追従してばね(8〕
を受止f915(1a )に対し相対連動させて、該ば
ね(8)の巻回部(8b〕を前記クラッチレバ−(60
)の揺動方向と同方向に変位させるごとができるので、
A relative movement occurs between the spring (8) and the spring (8).
) is displaced in the same direction as the rocking direction of the clutch lever [60], and 2) "But," and "But," on page 14, line 14 of the same page, "the spring (8) ” and add the following sentence between them. [The spring (8) follows the movement of the clutch lever (60)]
is relatively interlocked with the catch f915 (1a), and the winding part (8b) of the spring (8) is connected to the clutch lever (60).
) can be displaced in the same direction as the swing direction of

Claims (1)

【特許請求の範囲】[Claims] ベース部材と、自転車に装着Tる多段スプロケット装置
の軸方同番こ移動可能とした可動部材と、該可動部材を
前記多段スプロケット装置の軸方向に移動させる揺動リ
ンク形式の送り手段と、前記可動邪材番こ支持され、駆
動チェ2を多段スプロケット装置の一つのスプロケット
に案内するガイド機構とを備えた自転車用ディレーラ−
であって、外部操作で動作する操作部材を設けて、該操
作部材を、前記送り手段の中間に揺動可能に支持すると
共lこ、前記操作部材と前記ベース部材との間に前記操
作部材の支持点層りに保持し、前記操作部材を前記送り
手段に弾接するばねを介装し、該ばねを介して前記操作
部材を送り手段と連動させたことを特徴とする自転車用
ディレーラ−0
a base member, a movable member capable of moving in the same direction in the axial direction of the multi-stage sprocket device mounted on the bicycle; a swing link type feeding means for moving the movable member in the axial direction of the multi-stage sprocket device; A bicycle derailleur equipped with a guide mechanism supported by a movable metal wheel and guiding a drive chain 2 to one sprocket of a multi-stage sprocket device.
An operating member operated by an external operation is provided, the operating member is swingably supported in the middle of the feeding means, and the operating member is provided between the operating member and the base member. A bicycle derailleur-0, characterized in that the operating member is held at a supporting point layer, a spring is interposed for elastically contacting the operating member with the feeding means, and the operating member is interlocked with the feeding means via the spring.
JP8143083A 1983-05-09 1983-05-09 Derailer for bicycle Pending JPS59206278A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP8143083A JPS59206278A (en) 1983-05-09 1983-05-09 Derailer for bicycle
US06/605,697 US4626229A (en) 1983-05-09 1984-04-30 Derailleur for a bicycle
FR8407055A FR2545899B1 (en) 1983-05-09 1984-05-07 DERAILLEUR FOR A BICYCLE
DE3417146A DE3417146C2 (en) 1983-05-09 1984-05-09 Front derailleur for a bicycle derailleur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8143083A JPS59206278A (en) 1983-05-09 1983-05-09 Derailer for bicycle

Publications (1)

Publication Number Publication Date
JPS59206278A true JPS59206278A (en) 1984-11-22

Family

ID=13746156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8143083A Pending JPS59206278A (en) 1983-05-09 1983-05-09 Derailer for bicycle

Country Status (1)

Country Link
JP (1) JPS59206278A (en)

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