JPH078672B2 - Gear change operation device - Google Patents
Gear change operation deviceInfo
- Publication number
- JPH078672B2 JPH078672B2 JP61044974A JP4497486A JPH078672B2 JP H078672 B2 JPH078672 B2 JP H078672B2 JP 61044974 A JP61044974 A JP 61044974A JP 4497486 A JP4497486 A JP 4497486A JP H078672 B2 JPH078672 B2 JP H078672B2
- Authority
- JP
- Japan
- Prior art keywords
- lever
- positioning
- engaging
- friction
- engagement
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Gear-Shifting Mechanisms (AREA)
- Valve Device For Special Equipments (AREA)
- Mechanical Control Devices (AREA)
Description
【発明の詳細な説明】 (産業上の利用分野) 本発明は主として自転車に使用する変速操作装置、詳し
くは、自転車フレームなどに固定する固定部材にレバー
体を回転自由に支持し、このレバー体の回転操作により
変速機を作動させ、所定の変速段位に変速する如くした
変速操作装置に関する。Description: TECHNICAL FIELD The present invention relates to a gear shift operating device mainly used for bicycles, and more specifically, a lever member is rotatably supported by a fixing member fixed to a bicycle frame or the like. The present invention relates to a gear shift operation device that operates a transmission by rotating the gear to shift gears to a predetermined gear position.
(従来の技術) 従来、固定部材に、変速機を作動させるレバー体を回動
可能に支持する如くした自転車用変速操作装置におい
て、前記レバー体と連動して回転し、変速機の変速段位
を設定する位置決め体と、前記固定部材に固定され、前
記位置決め体に係合する係合体とを備えた位置決め機構
をもったものと、前記変速機の復帰ばねに対抗する回動
抵抗を前記レバー体に与えるフリクション機構をもった
ものとが知られている。(Prior Art) Conventionally, in a bicycle gear shift operation device in which a lever member for activating a transmission is rotatably supported by a fixing member, the gear shift position of the transmission is rotated by interlocking with the lever body. A positioning mechanism having a positioning body to be set and an engaging body fixed to the fixing member and engaging with the positioning body, and the lever body having a rotation resistance against a return spring of the transmission. It is known that it has a friction mechanism to give to.
所で、本願出願人は、先に、前記位置決め機構と、この
位置決め機構における回転側の位置決め体を、位置決め
機構の作動位置から非作動位置に切換える操作体を備
え、該操作体の操作で前記位置決め体を非作動位置に切
換えたとき、前記レバー体に前記変速機の復帰ばねに対
抗する回動抵抗を与えるようにした切換機構を設けると
共に、前記レバー体と位置決め体との連動部に、前記レ
バー体の位置決め体に対する回転を許容し、オーバシフ
トに対応して前記レバー体を復帰させる遊動隙間を設け
たものを提案した。(特開昭61−60387号公報) 所で、この装置は、位置決め機構を作動させて変速する
か、又は、位置決め機構を非作動体制に切換え、前記レ
バー体に回動抵抗を与えて変速するのであって、前記位
置決め機構の作動体制で前記レバー体を変速機の復帰ば
ねに抗して往動操作するとき、該レバー体を所定量以上
過剰回転し、前記変速機のチェン案内具を、多段スプロ
ケット装置におけるスプロケットの幅方向中心線よりオ
ーバシフトさせて変速を行なった後、前記レバー体を、
該レバー体の操作量に対し前記隙間量だけ復動させるの
であり、又、前記レバー体に回動抵抗を与えた状態で該
レバー体を往動操作すると、該レバー体は、前記隙間に
関係なく操作した位置に保持されるのであり、又、前記
位置決め体は、前記レバー体に対し前記隙間量だけ遅れ
て回動するのである。By the way, the applicant of the present application has previously provided the positioning mechanism and an operating body for switching the positioning body on the rotation side of the positioning mechanism from an operating position of the positioning mechanism to a non-operating position, and operating the operating body to perform the operation described above. When the positioning body is switched to the non-operating position, the lever body is provided with a switching mechanism that provides a turning resistance against the return spring of the transmission, and the interlocking portion between the lever body and the positioning body is provided. It has been proposed to allow a rotation of the lever body with respect to the positioning body and to provide a floating clearance for returning the lever body in response to an overshift. (Patent Document 1: Japanese Patent Laid-Open No. 61-60387) In this device, the positioning mechanism is operated to shift gears, or the positioning mechanism is switched to a non-operating system to impart rotational resistance to the lever body to shift gears. Therefore, when the lever body is operated to move forward against the return spring of the transmission in the operating system of the positioning mechanism, the lever body is excessively rotated by a predetermined amount or more, and the chain guide tool of the transmission is After shifting by overshifting from the center line in the width direction of the sprocket in the multi-stage sprocket device, the lever body is
The lever body is moved back by the gap amount with respect to the operation amount of the lever body. Further, when the lever body is operated to move forward in a state where the lever body is provided with a rotation resistance, the lever body is related to the gap. Instead, it is held in the operated position, and the positioning body rotates with a delay of the gap amount with respect to the lever body.
(発明が解決しようとする問題点) 所が、この装置の場合、前記操作体の操作で位置決め体
を作動位置から非作動位置に切換えてレバー体に前記復
帰ばねの力(F)に対抗する回動抵抗(R)を与え、フ
リクション体制に変換して使用するとき、前記操作体の
操作によりレバー体に与えられる大きな回動抵抗(R1)
と、非作動位置に切換えられた位置決め体と前記操作体
との間に生ずる小さな回動抵抗(R2)とを加算したもの
が、前記回動抵抗(R)となるため、前記操作体が適正
な操作量だけ操作されて、前記回動抵抗(R1)が前記復
帰ばねの力(F)より充分に大きい場合は問題ないが、
前記操作体の操作量が適正操作量よりも不足して、前記
回動抵抗(R1)が前記復帰ばねの力(F)より僅かに大
きいとか、或いは僅かでも小さくなっている場合、自転
車走行時の振動などにより、前記変速機の復帰ばねの復
元力で前記レバー体が、前記位置決め体に対し前記隙間
量だけ不測に復動することになり、その結果、前記レバ
ー体を操作してチェンを掛換える場合、前記レバー体の
操作状態によっては、掛換えられたチェンが、隣接する
別のスプロケットに自動的に掛換わることがあった。即
ち、レバー体が所定量以上過剰回転されていない場合
に、該レバー体が前記隙間量だけ復帰すると、レバー体
の操作量が所定量以下に減少し、前記チェンが自動的に
掛換わることになるのである。(Problems to be solved by the invention) However, in the case of this device, the positioning body is switched from the operating position to the non-operating position by the operation of the operating body so that the lever body opposes the force (F) of the return spring. A large turning resistance (R 1 ) given to the lever body by the operation of the operation body when the rotation resistance (R) is given and converted into a friction system for use.
And a small turning resistance (R 2 ) generated between the positioning body switched to the non-operating position and the operating body becomes the turning resistance (R), so that the operating body is There is no problem if the turning resistance (R 1 ) is sufficiently larger than the force (F) of the return spring after being operated by an appropriate amount of operation,
When the operation amount of the operation body is less than the appropriate operation amount and the rotation resistance (R 1 ) is slightly larger than the force (F) of the return spring, or even slightly smaller, the bicycle travels. Due to vibration at the time, the lever body unexpectedly moves back by the restoring force of the return spring of the transmission by the gap amount with respect to the positioning body, and as a result, the lever body is operated to operate the chain. In some cases, depending on the operating state of the lever body, the chain that has been hooked may automatically be hooked to another adjacent sprocket. That is, when the lever body is not excessively rotated by a predetermined amount or more and the lever body returns by the gap amount, the operation amount of the lever body is reduced to a predetermined amount or less, and the chain is automatically replaced. It will be.
本発明の目的は、位置決め機構の作動体制で変速する場
合、レバー体を、位置決め機構で設定された位置に対し
前記遊動隙間量だけ過剰回転させて変速することができ
ながら、位置決め機構の作動体制からフリクション体制
に切換えて使用する場合、レバー体が前記隙間量不測に
復動するのを防ぐことができるようにするものである。An object of the present invention is to provide an operating system for the positioning mechanism while allowing the lever body to be over-rotated by the amount of the floating clearance with respect to the position set by the positioning mechanism when performing gear shifting with the operating system for the positioning mechanism. It is intended to prevent the lever body from unintentionally returning when the clearance amount is changed to the friction system.
(問題点を解決するための手段) しかして、本発明は、固定部材(1)と、該固定部材
(1)に対し回転自由に支持するレバー体(2)と、該
レバー体(2)と連動して回転し、変速機の変速段位を
設定する位置決め体(31)及び前記レバー体(2)に対
し回転不能で前記位置決め体(31)に係合する係合体
(32)とから成る位置決め機構(3)と、前記変速機の
復帰ばねに対抗する回動抵抗を前記レバー体(2)に与
えるフリクション体(4)とを設け、前記レバー体
(2)と位置決め体(31)との連動部に、前記レバー体
(2)の位置決め体(31)に対する回転を許容し、オー
バシフトに対応して前記レバー体(2)を復動させる遊
動隙間(K)を設けると共に、前記位置決め体(31)と
フリクション体(4)とを並列状に配設して、前記フリ
クション体(4)を前記レバー体(2)に支持する一
方、前記係合体(32)を前記位置決め体(31)とフリク
ション体(4)との間にわたって変位可能にすると共
に、この係合体(32)を前記変位可能とした方向に変位
させて前記位置決め体(31)との係合を解除し、前記係
合体(32)を前記フリクション体(4)に係合させる切
換手段を設けたものである。(Means for Solving the Problems) In the present invention, therefore, the fixing member (1), the lever body (2) rotatably supporting the fixing member (1), and the lever body (2). It comprises a positioning body (31) which rotates in conjunction with the positioning body (31) for setting the gear position of the transmission, and an engagement body (32) which is non-rotatable with respect to the lever body (2) and engages with the positioning body (31). A positioning mechanism (3) and a friction body (4) that gives a rotation resistance against the return spring of the transmission to the lever body (2) are provided, and the lever body (2) and the positioning body (31) are provided. In the interlocking part of the above, there is provided a floating clearance (K) for allowing the lever body (2) to rotate with respect to the positioning body (31) and returning the lever body (2) in response to an overshift, and the positioning is performed. The body (31) and the friction body (4) are arranged in parallel, and The engagement body (32) is displaceable between the positioning body (31) and the friction body (4) while supporting the friction body (4) on the lever body (2), and the engagement body (32) is displaceable. And a switching means for disengaging the positioning body (31) and engaging the engagement body (32) with the friction body (4). Is.
(作用) 位置決め機構(3)の作動体制時、レバー体(2)を回
転操作すると、該レバー体(2)は、位置決め体(31)
に対し前記隙間(K)量だけ過剰回転して変速できるの
であり、又、往復操作後レバー体(2)は、前記変速機
の復帰ばねの復元力により前記位置決め体(31)に対し
前記隙間(K)量だけ復帰するのであり、又、切換手段
により前記係合体(32)の位置決め体(31)との係合を
解除し、前記係合体(32)をフリクション体(4)に係
合させて、フリクション体制に変換した場合、前記位置
決め体(31)が係合体(32)に対しフリー回転可能とな
り、前記レバー体(2)に作用する回動抵抗は、前記位
置決め体(31)を迂回することなく直接前記レバー体
(2)に作用するので、前記遊動隙間(K)を設けた構
造であるにも拘らず、自転車走行時の振動などが原因で
前記レバー体(2)が遊動隙間(K)量不測に復動する
のを有効に防止できるのであり、しかも、前記位置決め
機構の非回転側係合体(32)を、回転側の位置決め体
(31)とフリクション体(4)との間で変位させてフリ
クション体制に切換えるのであるから、切換構造を簡単
にでき、コストと低減できるのである。(Operation) When the lever body (2) is rotationally operated while the positioning mechanism (3) is operating, the lever body (2) is moved to the positioning body (31).
In contrast, the lever body (2) can be rotated by excessive rotation by the amount of the clearance (K), and the lever body (2) after the reciprocating operation can move the clearance with respect to the positioning body (31) by the restoring force of the return spring of the transmission. (K) is returned, and the engagement means (32) is disengaged from the positioning body (31) by the switching means, and the engagement body (32) is engaged with the friction body (4). When the friction body is converted to the friction system, the positioning body (31) can freely rotate with respect to the engagement body (32), and the rotation resistance acting on the lever body (2) causes the positioning body (31) to rotate. Since it acts directly on the lever body (2) without detouring, the lever body (2) may move due to vibration during bicycle running, despite the structure having the floating gap (K). The amount of clearance (K) can be effectively prevented from returning unexpectedly. In addition, since the non-rotating side engaging body (32) of the positioning mechanism is displaced between the rotating side positioning body (31) and the friction body (4) to switch to the friction system, the switching structure is changed. It can be done easily and at a reduced cost.
(実施例) 第1図に示した変速操作装置は、筒状のレバー軸(11)
をもった固定部材(1)と、前記レバー軸(11)に対し
回転自由に支持するレバー体(2)と、該レバー体
(2)と連動して回転し、変速機の変速段位を設定する
位置決め体(31)及び該位置決め体(31)に係合する係
合体(32)とから成る位置決め機構(3)と、前記変速
機の復帰ばねに対抗する回動抵抗を前記レバー体(2)
に与えるフリクション体(4)とを設けたものであっ
て、前記固定部材(1)は、自転車のフレームに溶接に
より固定するボス部(12)と、このボス部(12)の一端
面から外方に突出する前記レバー軸(11)とから成り、
前記ボス部(12)には、筒状のアダプター(5)を回転
不能に支持し、又、前記レバー軸(11)には、支持軸部
(61)と、この支持軸部に段部を介して連続する大径軸
部(62)と、該大径軸部に段部を介して連続する中径軸
部(63)と、該中径軸部に段部を介して連続し、かつ外
周面にねじと、軸方向に延びる凹凸条とをもった小径軸
部(64)とから成る筒状の固定ブッシュ(6)を着脱自
在に支持し、この固定ブッシュ(6)の大径軸部側内面
に前記レバー軸(11)に回転不能に嵌合している。(Embodiment) The gear shift operating device shown in FIG. 1 has a cylindrical lever shaft (11).
A fixed member (1), a lever body (2) that rotatably supports the lever shaft (11), and the lever body (2) rotate in conjunction with each other to set the gear position of the transmission. A positioning mechanism (3) including a positioning body (31) for engaging the positioning body (31) and an engaging body (32) for engaging with the positioning body (31), and a rotation resistance against the return spring of the transmission. )
And a friction body (4) for attaching to the bicycle. The fixing member (1) has a boss portion (12) fixed to a frame of a bicycle by welding and an outer surface from one end surface of the boss portion (12). Consisting of the lever shaft (11) protruding in one direction,
A cylindrical adapter (5) is non-rotatably supported on the boss portion (12), and a support shaft portion (61) and a stepped portion on the support shaft portion are supported on the lever shaft (11). A large-diameter shaft portion (62) continuous via the intermediate diameter shaft portion (63) continuous to the large-diameter shaft portion via a step portion, A large diameter shaft of the fixed bush (6) is detachably supported by a cylindrical fixed bush (6) consisting of a screw and a small diameter shaft portion (64) having an axially extending ridge and groove on its outer peripheral surface. The lever shaft (11) is non-rotatably fitted to the inner surface of the section.
又、前記レバー体(2)は、貫通孔をもった円筒状のボ
ス部(21)と、このボス部(21)の一側から径方向外方
に延びる操作部(図示せず)とから成り、前記貫通孔の
一端開口部に、前記支持軸部(61)に嵌合する嵌合部を
設けている。The lever body (2) includes a cylindrical boss portion (21) having a through hole and an operation portion (not shown) extending radially outward from one side of the boss portion (21). In addition, a fitting portion that fits into the support shaft portion (61) is provided at the one end opening portion of the through hole.
又、前記位置決め機構(3)の位置決め体(31)には、
前記変速機の変速段位に相当する複数の係合部(31a)
を設けて、この係合部(31a)の一つに前記係合体(3
2)を係合させている。又、前記位置決め体(31)は、
前記中径軸部(63)に回転自由に支持し、又、前記係合
体(32)は、保持体(7)を介して前記固定ブッシュ
(6)に支持している。又、この係合体(32)と前記固
定ブッシュ(6)との間には、前記係合体(32)を前記
位置決め体(31)方向に付勢する押圧ばね(8)を介装
している。The positioning body (31) of the positioning mechanism (3) has
A plurality of engaging parts (31a) corresponding to the gear positions of the transmission
Is provided, and the engaging body (3
2) is engaged. Further, the positioning body (31) is
The medium diameter shaft portion (63) is rotatably supported, and the engagement body (32) is supported by the fixed bush (6) via a holding body (7). A pressing spring (8) for urging the engagement body (32) toward the positioning body (31) is interposed between the engagement body (32) and the fixed bush (6). .
又、前記位置決め体(31)には、その一端側外周面に、
複数個の係合突起(31b)を設け、この係合突起(31b)
に係合する係合凹部(21a)を前記ボス部(21)の貫通
孔内周面に設けて、前記位置決め体(31)を連動部レバ
ー体(2)の回転に連動させるようにする一方、第3図
の如くこれら係合突起(31b)と係合凹部(21a)との間
に、前記レバー体(2)の位置決め体(31)に対する回
転を許容し、オーバシフトに対応して前記レバー体
(2)を復動させる遊動隙間(K)を設けて、レバー体
(2)を往動操作量に対し前記隙間(K)相当量だけ前
記位置決め体(31)に対しフリーに復動させる如く成し
ている。Further, the positioning body (31) has an outer peripheral surface on one end side,
Providing a plurality of engaging protrusions (31b), the engaging protrusions (31b)
An engaging recess (21a) that engages with is provided on the inner peripheral surface of the through hole of the boss (21) so that the positioning body (31) is interlocked with the rotation of the interlocking portion lever body (2). As shown in FIG. 3, the lever body (2) is allowed to rotate with respect to the positioning body (31) between the engagement projection (31b) and the engagement recess (21a), and the lever body (2) is rotated in response to the overshift. An idle clearance (K) for returning the lever body (2) is provided, and the lever body (2) is freely returned to the positioning body (31) by an amount equivalent to the clearance (K) with respect to the forward operation amount. It's done to let you do it.
しかして、第1〜9図に示した実施例では、前記フリク
ション体(4)を前記位置決め体(31)と別に形成し
て、これら位置決め体(31)とフリクション体(4)と
を前記レバー体(2)の回転中心線に対し直交する方向
に並列状に配設して、前記フリクション体(4)を前記
レバー体(2)のボス部端面に支持すると共に、前記係
合体(32)を前記位置決め体(31)とフリクション体
(4)との間にわたって変位可能とし、更に、前記係合
体(32)を前記レバー体(2)の回転中心線に対し直交
する方向に変位させて前記位置決め体(31)との係合を
解除し、前記係合体(32)を前記フリクション体(4)
に係合させる切換手段を設けたのである。Therefore, in the embodiment shown in FIGS. 1 to 9, the friction body (4) is formed separately from the positioning body (31), and the positioning body (31) and the friction body (4) are connected to the lever. The friction bodies (4) are arranged in parallel in a direction orthogonal to the rotation center line of the body (2) to support the friction body (4) on the end surface of the boss portion of the lever body (2), and the engagement body (32). Is made displaceable between the positioning body (31) and the friction body (4), and further, the engaging body (32) is displaced in a direction orthogonal to the rotation center line of the lever body (2). The engagement with the positioning body (31) is released, and the engagement body (32) is replaced with the friction body (4).
The switching means for engaging with is provided.
以上の構成において、前記フリクション体(4)は、前
記位置決め体(31)に対し該位置決め体(31)の半径方
向外方に配置するのであって、前記位置決め体(31)の
外径よりも大径の貫通孔をもった環状板体から成り、そ
の表面を、外周縁から内周縁に向って薄肉となるように
傾斜させて、この傾斜表面に、断面V字形の凹凸条から
成るフリクション部(41)を全周面に亘って設けてい
る。In the above configuration, the friction body (4) is arranged radially outward of the positioning body (31) with respect to the positioning body (31), and is larger than the outer diameter of the positioning body (31). The friction part is composed of an annular plate having a large-diameter through hole, the surface of which is inclined so as to become thin from the outer peripheral edge toward the inner peripheral edge, and the inclined surface has a V-shaped cross section. (41) is provided over the entire peripheral surface.
又、前記フリクション体(4)を支持する前記レバー体
(2)のボス部(21)端面には、環状受面を設けて、こ
の環状受面に、前記フリクション体(4)を支持すると
共に、これらフリクション体(4)とボス部(21)との
一方に嵌合突起を設け、又、他方にこの嵌合突起に係合
する嵌合凹部を設けて、前記フリクション体(4)のレ
バー体(2)に対する回転を阻止している。An annular receiving surface is provided on the end surface of the boss (21) of the lever body (2) that supports the friction body (4), and the friction body (4) is supported on the annular receiving surface. A fitting projection is provided on one of the friction body (4) and the boss portion (21), and a fitting recess for engaging with the fitting projection is provided on the other of the friction body (4) and the lever of the friction body (4). Prevents rotation with respect to body (2).
又、前記位置決め体(31)の係合部(31a)は、周方向
に所定間隔を置いて設けるのであり、又、前記係合体
(32)は、ボールを用いるのであるが、その他ローラを
用いてもよいし、又、後記する如く転動体以外の形状に
形成してもよい。Further, the engaging portions (31a) of the positioning body (31) are provided at predetermined intervals in the circumferential direction, and the engaging body (32) uses balls, but other rollers are used. Alternatively, it may be formed in a shape other than the rolling element as described later.
又、この係合体(32)を保持する保持体(7)は、前記
小型軸部(64)に回転不能に嵌合する嵌合孔をもった円
板から成り、この保持体(7)に、第4図の如く半径方
向に延びる保持孔(71)と、周方向に延びる逃し孔(7
2)とを設けており、前記保持孔(71)に、前記係合体
(32)を保持体(7)の半径方向に変位可能に保持して
いる。The holding body (7) for holding the engaging body (32) is a disc having a fitting hole for non-rotatably fitting in the small shaft portion (64). As shown in FIG. 4, a holding hole (71) extending in the radial direction and a relief hole (7) extending in the circumferential direction.
2) are provided, and the engagement body (32) is held in the holding hole (71) so as to be displaceable in the radial direction of the holding body (7).
又、前記係合体(32)を付勢する押圧ばね(8)は、前
記小径軸部(64)に回転不能に嵌合する嵌合孔をもった
円板状の板ばねから成り、この押圧ばね(8)に、第6
図に如く周方向に向って延びる逃し孔(81)を設けてい
る。The pressing spring (8) for urging the engaging body (32) is composed of a disk-shaped plate spring having a fitting hole for non-rotatably fitting in the small diameter shaft portion (64). The spring (8) has a sixth
As shown, an escape hole (81) extending in the circumferential direction is provided.
又、前記切換手段は、前記係合体(32)に係合して該係
合体(32)を前記保持体(7)の半径方向に変位させる
ガイド体(91)と、このガイド体(91)を操作する操作
体(92)とから成り、前記ガイド体(91)は、前記係合
体(32)との対向部位から周方向に向って半径方向外方
に延びるガイド部(91a)をもった環状板から成り、こ
のガイド体(91)を、前記小径軸部(64)に、該小径軸
部(64)に回転不能に嵌合する間座(93)を介して回転
可能に支持している。又、このガイド体(91)には、係
止孔(91b)を設けている。The switching means engages with the engaging body (32) to displace the engaging body (32) in the radial direction of the holding body (7), and the guide body (91). The guide body (91) has a guide portion (91a) extending outward in the radial direction in the circumferential direction from a portion facing the engaging body (32). The guide body (91) is made of an annular plate and is rotatably supported by the small-diameter shaft portion (64) via a spacer (93) which is non-rotatably fitted to the small-diameter shaft portion (64). There is. Further, the guide body (91) is provided with a locking hole (91b).
又、前記操作体(92)は、前記小径軸部(64)に、該小
径軸部(64)に螺合する固定ナット(10)を介して回転
自由に支持するのであって、この操作体(92)の端面
に、前記ガイド体(91)の係止孔(91b)に嵌合する伝
動腕(92a)を設けて、前記操作体(92)の回転を前記
ガイド体(91)に伝達するようにしている。Further, the operating body (92) is rotatably supported on the small diameter shaft portion (64) through a fixing nut (10) screwed to the small diameter shaft portion (64). A transmission arm (92a) fitted into the locking hole (91b) of the guide body (91) is provided on the end surface of the (92) to transmit the rotation of the operating body (92) to the guide body (91). I am trying to do it.
又、前記操作体(92)は、前記固定ナット(10)に対し
軸方向移動可能とし、これら操作体(92)と固定ナット
(10)との間に、前記操作体(92)の軸方向に対向する
噛合クラッチ(20)を設けると共に、前記操作体(92)
を前記噛合クラッチ(20)が常時噛合する方向に付勢す
るクラッチばね(30)を設けている。尚、このクラッチ
ばね(30)は、第7,8図に示す如く前記小径軸部(64)
に回転不能に嵌合する嵌合孔をもった板ばねから成り、
又、前記噛合クラッチ(20)は、前記操作体(92)と固
定ナット(10)との軸方向対向面に周設する断面V字形
の噛合歯から成るものである。Further, the operating body (92) is movable in the axial direction with respect to the fixed nut (10), and the operating body (92) and the fixed nut (10) are provided with an axial direction of the operating body (92). Is provided with a meshing clutch (20) opposed to the operating body (92).
Is provided with a clutch spring (30) for urging the engagement clutch (20) in a direction in which the engagement clutch (20) is always engaged. The clutch spring (30) has the small-diameter shaft portion (64) as shown in FIGS.
It consists of a leaf spring with a fitting hole that fits non-rotatably
The meshing clutch (20) is composed of meshing teeth having a V-shaped cross section which are provided around the axially opposing surfaces of the operating body (92) and the fixing nut (10).
尚、図示した変速操作装置は、前記位置決め体(31)と
前記固定部材(1)との間に、前記位置決め体(31)を
前記変速機のリターンばねの付勢方向と逆方向に付勢す
る補正ばね(40)を設けて、この補正ばね(40)により
前記操作レバー(2)の往動操作時に必要な操作力を小
さくできるようにしている。In addition, in the illustrated shift operating device, the positioning body (31) is biased between the positioning body (31) and the fixing member (1) in a direction opposite to the biasing direction of the return spring of the transmission. The correction spring (40) is provided so that the operation force required for the forward operation of the operation lever (2) can be reduced by the correction spring (40).
又、図中(50)は、前記レバー軸(11)のねじ孔に螺合
する取付ねじ、(94)は前記操作体(92)に起状可能に
設ける略C字形の取手、(60)は合成樹脂のカップ、
(70)は調子板、(100)は座金である。Further, in the figure, (50) is a mounting screw that is screwed into the screw hole of the lever shaft (11), (94) is a substantially C-shaped handle provided in the operating body (92) so that it can be raised, and (60). Is a synthetic resin cup,
(70) is a tone plate, and (100) is a washer.
又、前記固定ブッシュ(6)と、レバー体(2)と、位
置決め体(31)と、係合体(32)と、押圧ばね(8)
と、保持体(7)と、フリクション体(4)と、操作体
(92)と、ガイド体(91)と、間座(93)及びクラッチ
ばね(30)とは、固定ナット(10)の前記ブッシュ
(6)への螺合によりユニット化している。Further, the fixed bush (6), the lever body (2), the positioning body (31), the engaging body (32), and the pressing spring (8).
The holding body (7), the friction body (4), the operating body (92), the guide body (91), the spacer (93), and the clutch spring (30) form the fixing nut (10). The bush (6) is screwed into a unit.
本発明は以上の如く構成するもので、位置決め機構
(3)の作動体制時、第1図の如く係合体(32)が、位
置決め体(31)における係合部(31a)の何れか一つと
係合している。この第1図の状態でレバー体(2)を回
転操作すると、該レバー体(2)は、隙間(K)量だけ
位置決め体(31)に対し変速機の復帰ばねに対抗してフ
リー回転し、係合凹部(21a)と係合突起(31b)とが係
合して、レバー体(2)と位置決め体(31)とが一体化
するのである。The present invention is configured as described above, and when the positioning mechanism (3) is operating, the engaging body (32) as shown in FIG. 1 becomes one of the engaging portions (31a) of the positioning body (31). Engaged. When the lever body (2) is rotationally operated in the state shown in FIG. 1, the lever body (2) rotates freely by an amount of the clearance (K) against the positioning body (31) against the return spring of the transmission. The engaging recess (21a) and the engaging protrusion (31b) are engaged with each other, and the lever body (2) and the positioning body (31) are integrated.
そして、前記レバー体(2)を更らに往動操作すると、
位置決め体(31)は、係合体(32)に対し、前記各係合
部(31a)間のピッチ相当分だけ、前記レバー体(2)
と共に回転し、前記レバー体(2)は、前記隙間(K)
量だけ過剰回転することになる。そして、この過剰回転
により前記変速機のチェン案内具は、多段スプロケット
装置における各スプロケットに対しオーバーシフトし、
該該チェン案内具で案内するチェンは所望のスプロケッ
トに掛換えられるのである。When the lever body (2) is further moved forward,
The positioning body (31) is provided with the lever body (2) by an amount corresponding to the pitch between the engagement portions (31a) with respect to the engagement body (32).
The lever body (2) rotates together with the gap (K).
It will be over-rotated by the amount. Due to this excessive rotation, the chain guide of the transmission is overshifted with respect to each sprocket in the multi-stage sprocket device,
The chain guided by the chain guide can be replaced with a desired sprocket.
次に、前記レバー体(2)の操作力を釈放すると、該レ
バー体(2)は、前記復帰ばねの復元力により前記位置
決め体(31)に対し前記隙間(K)相当量フリーに復動
し、前記位置決め機構(3)で設定した適正位置に保持
されるのである。又、前記チェン案内具も前記レバー体
(2)のフリー復動量に対応して復動し、所望のスプロ
ケットに対し適正位置に停止するのである。Next, when the operating force of the lever body (2) is released, the lever body (2) is returned to the positioning body (31) by the restoring force of the return spring so that the clearance (K) corresponds to the free amount. Then, it is held at the proper position set by the positioning mechanism (3). Further, the chain guide tool also moves back in accordance with the free returning amount of the lever body (2) and stops at an appropriate position with respect to a desired sprocket.
次に、前記位置決め機構(3)の作動体制から前記レバ
ー体(2)に変速機の復帰ばねに対抗する回動抵抗を与
える場合、第1図における操作体(92)を押操作して、
該操作体(92)を固定ナット(10)に対し軸方向に移動
させ、噛合クラッチ(20)を離脱して、前記操作体(9
2)を一方向に回動操するのであって、この操作体(9
2)の回動により、その回動力が、伝動腕(92a)を介し
てガイド体(91)に伝達され、該ガイド体(91)が前記
操作体(92)と共に回動し、このガイド体(91)の回動
に伴ない係合体(32)が前記ガイド体(91)のガイド部
(91a)に沿って位置決め体(31)の径方向外方側に変
位し、この係合体(32)の係合部(31a)との係合が離
脱して位置決め体(31)が係合体(32)に対し前記隙間
(K)の範囲内でフリー回転可能となる一方、前記係合
体(32)がフリクション体(4)のフリクション部(4
1)に係合し、この係合により、フリクション体(4)
を介して前記レバー体(2)に、前記変速機における復
帰ばねの力(F)に対抗する回動抵抗(R)が付与され
るのである。この場合、前記レバー体(2)に作用する
回動抵抗は、前記位置決め体(31)を迂回することな
く、レバー体(2)に支持したフリクション体(4)を
介して直接レバー体(2)に作用するので、自転車走行
時の診動などが原因で、前記レバー体(2)が前記隙間
(K)量だけ不測に復動することはないのである。Next, when the lever body (2) is given a rotational resistance against the return spring of the transmission from the operating system of the positioning mechanism (3), the operating body (92) in FIG.
The operating body (92) is moved in the axial direction with respect to the fixed nut (10), the engagement clutch (20) is disengaged, and the operating body (9) is released.
2) is operated to rotate in one direction, and this operation body (9
By the rotation of 2), the turning force is transmitted to the guide body (91) via the transmission arm (92a), and the guide body (91) rotates together with the operating body (92), and this guide body With the rotation of the (91), the engaging body (32) is displaced radially outward of the positioning body (31) along the guide portion (91a) of the guide body (91), and the engaging body (32) ) Is disengaged from the engaging portion (31a), and the positioning body (31) can freely rotate with respect to the engaging body (32) within the range of the clearance (K), while the engaging body (32) is rotated. ) Is the friction part (4) of the friction body (4).
1), and by this engagement, the friction body (4)
The rotation resistance (R) that opposes the force (F) of the return spring in the transmission is applied to the lever body (2) via the. In this case, the rotation resistance acting on the lever body (2) does not bypass the positioning body (31) and is directly passed through the friction body (4) supported by the lever body (2) to the lever body (2). ), The lever body (2) does not unexpectedly move back by the amount of the gap (K) due to a diagnosis or the like during traveling of the bicycle.
尚、前記操作体(92)は、回動操作後、該操作体(92)
から手を離すと、前記クラッチばね(30)の力で軸方向
に復動するのであって、この操作体(92)の復動により
噛合クラッチ(20)が噛合し、操作体(92)の回動は阻
止されるのである。The operation body (92) is rotated after the operation body (92).
When the hand is released, the clutch spring (30) reciprocates in the axial direction, and the reciprocal movement of the operating body (92) causes the meshing clutch (20) to engage with the operating body (92). The rotation is blocked.
又、以上の如くレバー体(2)に所定の回動抵抗を与え
た体制から、前記位置決め機構(3)が作動する体制に
切換える場合は、前記操作体(92)を押操作し、噛合ク
ラッチ(20)を離脱して、前記操作体(92)を反対方向
に回動操作するのであって、この操作体(92)の回動に
より、係合体(32)は、ガイド体(91)のガイド部(91
a)に沿って位置決め体(31)の半径方向内方側に変位
し、この係合体(32)のフリクション体(4)との係合
が離脱し、前記係合体(32)は前記係合部(31a)の何
れか一つと係合するのである。Further, when switching from the system in which the lever body (2) is given a predetermined turning resistance to the system in which the positioning mechanism (3) is operated, the operating body (92) is pushed to engage the clutch. The operation body (92) is rotated in the opposite direction by leaving the (20), and the rotation of the operation body (92) causes the engagement body (32) to move to the guide body (91). Guide part (91
is displaced inward in the radial direction of the positioning body (31) along a), the engagement of the engagement body (32) with the friction body (4) is released, and the engagement body (32) is engaged with the engagement body. It engages with any one of the parts (31a).
尚、以上説明した実施例では、レバー体(2)に連動し
て回転する位置決め体(31)を、変速機の変速段位に相
当する複数の係合部(31a)をもった構造としたが、そ
の他前記係合部(31a)がなく、この係合部(31a)の代
りに一つの転動体をもった構造としてもよいのであっ
て、その構造は特に限定されるものでない。要は、レバ
ー体(2)と連動して回転し、変速機の変速段位を設定
することができる構造であればよい。又、位置決め体
(31)を、転動体をもった構造とする場合、前記係合体
(32)に、変速機の変速段位に相当する複数の係合部を
設けるのである。In the embodiment described above, the positioning body (31) that rotates in conjunction with the lever body (2) has a structure having a plurality of engaging portions (31a) corresponding to the gear position of the transmission. Other than this, the structure may be such that the engaging portion (31a) is not provided and one rolling element is provided instead of the engaging portion (31a), and the structure is not particularly limited. The point is that the structure is such that it can rotate in conjunction with the lever body (2) and can set the gear position of the transmission. Further, when the positioning body (31) has a structure having rolling elements, the engaging body (32) is provided with a plurality of engaging portions corresponding to the gear shift stages of the transmission.
又、第1〜9図に示した実施例において、前記係合体
(32)を転動体以外の形状に形成する場合、例えば第10
〜12図に示す如く構成するのである。Further, in the embodiment shown in FIGS. 1 to 9, when the engaging body (32) is formed in a shape other than the rolling element, for example,
It is constructed as shown in FIGS.
この第10〜12図に示したものは、前記係合体(32)とし
て、前記係合部(31a)に係合する被係合部をもった1
対の爪体(320)を用い、この爪体(320)を、半径方向
に延びる半筒状の保持部(80a)をもった円板状状押圧
ばね(80)の保持部(80a)に、該保持部(80a)に沿っ
て変位可能に保持すると共に、前記各爪体(320)の外
側に、これら爪体(320)を前記押圧ばね(80)の径方
向内方に付勢するリングばね(33)を設けたものであっ
て、前記操作体(92)の回転操作で前記爪体(320)を
レバー体(2)の回転中心線に対し直交する方向に変位
させる如く成したものである。The one shown in FIGS. 10 to 12 has an engaged portion that engages with the engaging portion (31a) as the engaging body (32).
A pair of claw bodies (320) is used, and this claw body (320) is used as a holding portion (80a) of a disk-shaped pressing spring (80) having a semi-cylindrical holding portion (80a) extending in the radial direction. , While being held so as to be displaceable along the holding portion (80a), urges the claw bodies (320) to the outside of the claw bodies (320) inward in the radial direction of the pressing spring (80). A ring spring (33) is provided so that the pawl body (320) is displaced in a direction orthogonal to the rotation center line of the lever body (2) by rotating the operating body (92). It is a thing.
又、この実施例の場合、前記保持体(7)とガイド体
(91)とは、前記ブッシュ(6)の中径軸部(63)に回
転可能に支持している。又、前記合成樹脂製のカップ
(60)は、その中間に薄肉部を設けて軸方向に弾性変形
可能に構成し、このカップ(60)に、前記操作体(92)
の軸方向端面に対接する支承片(60a)を設けて、前記
カップ(60)の弾性力により前記噛合クラッチ(20)を
噛合させるようにしている。Further, in the case of this embodiment, the holding body (7) and the guide body (91) are rotatably supported by the medium diameter shaft portion (63) of the bush (6). Further, the synthetic resin cup (60) is provided with a thin portion in the middle thereof so as to be elastically deformable in the axial direction, and the operating body (92) is provided in the cup (60).
A bearing piece (60a) is provided so as to be in contact with the axial end face of the engagement clutch (20) so that the engagement clutch (20) is engaged by the elastic force of the cup (60).
尚、第10〜12図に示した実施例の場合、前記ガイド体
(91)と前記押圧ばね(80)との対向面に、軸方向に向
って突出し、かつ、前記ガイド体(91)の回転で互いに
係合する傾斜面をもった1組の係合突起を設けて、前記
操作体(92)の回転操作時、前記係合突起を互いに係合
させて前記押圧ばね(80)を前記爪体(320)に対し離
反する方向に撓ませ、前記爪体(320)に作用する荷重
を小さくして、該爪体(320)を変位させ易いようにす
るのが好ましい。In the case of the embodiment shown in FIGS. 10 to 12, the guide body (91) and the pressing spring (80) are opposed to each other in the axial direction and project in the axial direction. A pair of engaging projections having inclined surfaces that engage with each other by rotation are provided, and when the operating body (92) is rotated, the engaging projections are engaged with each other so that the pressing spring (80) is It is preferable that the claw body (320) is bent in a direction away from the claw body (320) to reduce the load acting on the claw body (320) to facilitate the displacement of the claw body (320).
又、前記係合体(32)として第1図の如く転動体を用い
る場合、例えば、前記押圧ばね(80)の係合体(32)と
の対面部位に、半径方向に延びる半筒状の保持部を設け
て、この保持部に前記係合体(32)を保持する如く成す
ことにより、前記保持体(7)を不要にできるのであ
る。When a rolling element is used as the engaging body (32) as shown in FIG. 1, for example, a semi-cylindrical holding portion extending in the radial direction is provided at a portion of the pressing spring (80) facing the engaging body (32). The holding body (7) can be made unnecessary by providing the holding body with the engaging body (32).
又、前記切換手段を構成する操作体(92)の回転操作位
置を維持する手段として、噛合クラッチ(20)を設けた
が、その他、例えば前記操作体(92)の取手(94)を利
用し、この取手(94)の端縁を尖らせると共に、この端
縁側を、前記操作体(92)を貫通して該操作体(92)の
内面側に突入させる一方、前記固定ナット(10)の外
周、又は前記座金(100)の外周、或いは前記取付ねじ
(50)の頭部外周に、前記取手(94)の尖鋭端縁に係合
する凹凸条を周設してもよい。この場合、前記操作体
(92)に、前記取手(94)の起伏操作時、該取手(94)
を拡径させるカム面を設けて、前記操作体(92)の回転
操作時、前記取手(94)における尖鋭端縁の前記凹凸条
との係合を離脱させるようにしてもよい。Further, the meshing clutch (20) is provided as a means for maintaining the rotational operation position of the operating body (92) constituting the switching means, but other than that, for example, the handle (94) of the operating body (92) is used. , The edge of the handle (94) is sharpened, and the edge side is penetrated through the operating body (92) to the inner surface side of the operating body (92), while the fixing nut (10) is On the outer circumference, the outer circumference of the washer (100), or the outer circumference of the head of the mounting screw (50), an uneven line may be provided around the sharp edge of the handle (94). In this case, when the handle (94) is raised and lowered on the operating body (92), the handle (94)
A cam surface for expanding the diameter may be provided to disengage the sharp edge of the handle (94) from the concavo-convex line when the operating body (92) is rotated.
又、前記噛合クラッチ(20)を設ける場合、前記クラッ
チばね(30)に代えて、前記合成樹脂製のカップ(60)
を利用し、このカップ(60)に、前記操作体(92)の軸
方向内端面に対接する弾性変形可能な支承片を設けて、
この支承片の弾性力により前記噛合クラッチ(20)を噛
合させる如く成してもよい。When the dog clutch (20) is provided, the cup (60) made of synthetic resin is used instead of the clutch spring (30).
The cup (60) is provided with an elastically deformable support piece that contacts the axially inner end surface of the operating body (92).
The engagement clutch (20) may be engaged by the elastic force of the support piece.
又、前記操作体(92)は、前記係合体(32)を係合部
(31a)に係合させた操作位置と、フリクション部(4
1)に係合させた操作位置との2箇所に係合凹部を設け
ると共に、これら係合凹部の一つと選択的に係合する係
合突起とを設けて、前記2箇所でのみ操作体(92)の操
作位置を維持する如く構成してもよい。Further, the operating body (92) has an operating position where the engaging body (32) is engaged with the engaging portion (31a) and a friction portion (4).
The engaging recesses are provided at two positions with respect to the operation position engaged with 1), and the engaging projections that selectively engage with one of these engaging recesses are provided, so that the operating body ( You may comprise so that the operation position of 92) may be maintained.
又、前記切換手段を構成するガイド体(91)のガイド部
(91a)には、前記係合体(32)と係合する複数個の凹
入部を設けて、前記操作体(92)の回転操作時、クリッ
ク感が出るようにしてもよい。Further, the guide portion (91a) of the guide body (91) that constitutes the switching means is provided with a plurality of recessed portions that engage with the engagement body (32), and the operation body (92) is rotated. You may want to give a click feeling.
又、前記ガイド部(91a)は、例えば内側ガイド面と外
側ガイド面とをもった長孔により形成して、前記係合体
(32)を前記係合部(31a)と係合した位置からフリク
ション部(41)と係合する位置に変位させるとき、該係
合体(32)を前記内側ガイド面でガイドし、又、前記係
合体(32)をフリクション部(41)に係合した位置から
係合部(31a)と係合する位置に変位させるとき、該係
合体(32)を前記外側ガイド面でガイドする如く成して
もよい。この場合、内側ガイド面及び外側ガイド面に前
記凹入部を設けて、操作体(92)を何れの方向に回転操
作する場合でもクリック感が出るようにしてもよいし、
又、前記内側ガイド面の終端(係合体(32)がフリクシ
ョン部(41)と係合する位置)と、外側ガイド面の終端
(係合体(32)が係合部(31a)と係合する位置)との
2箇所にのみ前記係合体(32)と係合する凹入部を設け
て、位置決め機構(3)とフリクション機構(4)との
一方が作動体制になったことを良好に感知できるように
してもよい。Further, the guide portion (91a) is formed by, for example, an elongated hole having an inner guide surface and an outer guide surface, and the engagement body (32) is frictionally moved from a position where the engagement body (31a) is engaged. When the engagement body (32) is displaced to a position where it engages with the portion (41), the engagement body (32) is guided by the inner guide surface, and the engagement body (32) is engaged from the position where the friction portion (41) is engaged. The engaging body (32) may be guided by the outer guide surface when the engaging body (32) is displaced to the position where the engaging portion (31a) is engaged. In this case, the concave portions may be provided on the inner guide surface and the outer guide surface so that a click feeling may be obtained even when the operation body (92) is rotated in any direction.
Further, the end of the inner guide surface (the position where the engagement body (32) engages with the friction portion (41)) and the end of the outer guide surface (the engagement body (32) engages with the engagement portion (31a). It is possible to satisfactorily detect that one of the positioning mechanism (3) and the friction mechanism (4) is in an operating state by providing a recessed portion that engages with the engaging body (32) only at two positions (position). You may do it.
又、以上の説明では、切換手段として、回動可能な操作
体(92)をもった構造としたが、その他レバー体(5)
の回転中心線に対し直交する方向に移動可能な操作体を
もった構造にしてもよいのであって、その構成は特に限
定されるものでない。Further, in the above description, the structure having the rotatable operation body (92) is used as the switching means, but the other lever body (5)
The operating body may be movable in a direction orthogonal to the rotation center line of (1), and the structure thereof is not particularly limited.
(発明の効果) 以上の如く本発明によれば、位置決め機構(3)の作動
体制時、レバー体(2)を所定量以上過剰回転して変速
することができながら、位置決め体制からフリクション
体制への切換を、位置決め機構(3)の非回転側係合体
(32)を、回転側の位置決め体(31)と係合する位置か
らフリクション体(4)側に変位させて該フリクション
体(4)に係合させ、この非回転側係合体(32)及びフ
リクション体(4)から前記レバー体(2)に回動抵抗
を与えるようにしたから、前記遊動隙間(K)を設けた
構造であるにも拘らず、自転車走行時の振動などが原因
で前記レバー体(2)が遊動隙間(K)量不測に復動す
るのを有効に防止でき、この結果、チェンが隣接する別
のスプロケットに自動的に掛換わるのを防ぐことができ
るものであり、しかも、前記位置決め機構の非回転側係
合体(32)を、回転側の位置決め体(31)とフリクショ
ン体(4)との間で変位させて位置決め体制からフリク
ション体制に切換えるのであるから、切換構造を簡単に
でき、コストを低減できるのである。(Effects of the Invention) As described above, according to the present invention, when the positioning mechanism (3) is in the operating state, the lever body (2) can be excessively rotated by a predetermined amount or more to change gears, and the positioning system is changed to the friction system. The non-rotating side engaging body (32) of the positioning mechanism (3) is displaced to the friction body (4) side from the position where it engages with the rotating side positioning body (31). Since the non-rotating side engaging body (32) and the friction body (4) provide a rotation resistance to the lever body (2), the floating gap (K) is provided. Despite this, it is possible to effectively prevent the lever body (2) from returning unexpectedly due to the amount of loose clearance (K) due to vibrations when riding a bicycle, and as a result, the chain can be moved to another adjacent sprocket. You can prevent it from switching automatically Moreover, the non-rotating side engaging body (32) of the positioning mechanism is displaced between the rotating side positioning body (31) and the friction body (4) to switch from the positioning system to the friction system. The switching structure can be simplified and the cost can be reduced.
第1図は本発明装置の一実施例を示す拡大縦断面図、第
2図は位置決め体部分の横断面図、第3図はレバー体と
位置決め体との連動部における横断面図、第4図は係合
体と保持体との関係を示す平面図、第5図は係合体とガ
イド体との関係を示す平面図、第6図は押圧ばねのみの
平面図、第7図はクラッチばねのみの平面図、第8図は
同正面図、第9図はフリクション体制に切換えた状態の
一部を省略した拡大断面図、第10図〜第12図は別の実施
例を示すもので、第10図は一部を省略した拡大断面図、
第11図は係合体のみの斜視図、第12図はフリクション体
制に切換えた状態の一部を省略した拡大断面図である。 (1)……固定部材 (2)……レバー体 (3)……位置決め機構 (31)……位置決め体 (32)……係合体 (4)……フリクション体 (K)……隙間FIG. 1 is an enlarged vertical sectional view showing an embodiment of the device of the present invention, FIG. 2 is a lateral sectional view of a positioning body portion, FIG. 3 is a lateral sectional view of an interlocking portion between a lever body and a positioning body, and FIG. FIG. 5 is a plan view showing the relationship between the engagement body and the holding body, FIG. 5 is a plan view showing the relationship between the engagement body and the guide body, FIG. 6 is a plan view of only the pressing spring, and FIG. 7 is only the clutch spring. FIG. 8 is a front view of the same, FIG. 9 is an enlarged sectional view in which a part of the state is switched to the friction system is omitted, and FIGS. 10 to 12 show another embodiment. 10 is an enlarged cross-sectional view with a part omitted,
FIG. 11 is a perspective view of only the engaging body, and FIG. 12 is an enlarged cross-sectional view with a part of the state switched to the friction system omitted. (1) …… Fixing member (2) …… Lever body (3) …… Positioning mechanism (31) …… Positioning body (32) …… Engaging body (4) …… Friction body (K) …… Gap
Claims (1)
し回転自由に支持するレバー体(2)と、該レバー体
(2)と連動して回転し、変速機の変速段位を設定する
位置決め体(31)及び前記レバー体(2)に対し回転不
能で前記位置決め体(31)に係合する係合体(32)とか
ら成る位置決め機構(3)と、前記変速機の復帰ばねに
対抗する回動抵抗を前記レバー体(2)に与えるフリク
ション体(4)とを設け、前記レバー体(2)と位置決
め体(31)との連動部に、前記レバー体(2)の位置決
め体(31)に対する回転を許容し、オーバシフトに対応
して前記レバー体(2)を復動させる遊動隙間(K)を
設けると共に、前記位置決め体(31)とフリクション体
(4)とを並列状に配設して、前記フリクション体
(4)を前記レバー体(2)に支持する一方、前記係合
体(32)を前記位置決め体(31)とフリクション体
(4)との間にわたって変位可能にすると共に、この係
合体(32)を前記変位可能とした方向に変位させて前記
位置決め体(31)との係合を解除し、前記係合体(32)
を前記フリクション体(4)に係合させる切換手段を設
けたことを特徴とする変速操作装置。1. A fixed member (1), a lever body (2) rotatably supported with respect to the fixed member (1), and a lever member (2) which rotates in association with the fixed member (1) to rotate a gear position of a transmission. And a positioning body (31) for setting the position and a lever (2) non-rotatable engagement body (32) that engages with the positioning body (31), a positioning mechanism (3), and the return of the transmission. A friction body (4) that gives a rotation resistance against the spring to the lever body (2) is provided, and the lever body (2) is provided at the interlocking portion between the lever body (2) and the positioning body (31). The positioning body (31) and the friction body (4) are provided together with a loose clearance (K) for allowing the rotation of the positioning body (31) and returning the lever body (2) in response to an overshift. The friction bodies (4) are arranged in parallel, and the friction body (4) is arranged in the lever body (2). While supporting, the engaging body (32) is displaceable between the positioning body (31) and the friction body (4), and the engaging body (32) is displaced in the displaceable direction. The engagement body (32) is released from the engagement with the positioning body (31).
A gear shift operation device comprising switching means for engaging the friction body (4).
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61044974A JPH078672B2 (en) | 1986-02-28 | 1986-02-28 | Gear change operation device |
US06/888,161 US4690662A (en) | 1985-07-29 | 1986-07-22 | Speed control device |
DE3625507A DE3625507C2 (en) | 1985-07-29 | 1986-07-28 | Gear shifting device |
FR868610915A FR2585432B1 (en) | 1985-07-29 | 1986-07-28 | SPEED CONTROL DEVICE, PARTICULARLY FOR A BICYCLE |
IT21305/86A IT1198003B (en) | 1985-07-29 | 1986-07-29 | SPEED CONTROL DEVICE PARTICULARLY FOR BICYCLES |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP61044974A JPH078672B2 (en) | 1986-02-28 | 1986-02-28 | Gear change operation device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS62203889A JPS62203889A (en) | 1987-09-08 |
JPH078672B2 true JPH078672B2 (en) | 1995-02-01 |
Family
ID=12706444
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP61044974A Expired - Fee Related JPH078672B2 (en) | 1985-07-29 | 1986-02-28 | Gear change operation device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH078672B2 (en) |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0232192B2 (en) * | 1984-07-25 | 1990-07-18 | Shimano Industrial Co | JITENSHAYOHENSOKUSOSASOCHI |
JPH0226797Y2 (en) * | 1986-02-14 | 1990-07-20 |
-
1986
- 1986-02-28 JP JP61044974A patent/JPH078672B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPS62203889A (en) | 1987-09-08 |
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