JPH0143994Y2 - - Google Patents
Info
- Publication number
- JPH0143994Y2 JPH0143994Y2 JP1984189204U JP18920484U JPH0143994Y2 JP H0143994 Y2 JPH0143994 Y2 JP H0143994Y2 JP 1984189204 U JP1984189204 U JP 1984189204U JP 18920484 U JP18920484 U JP 18920484U JP H0143994 Y2 JPH0143994 Y2 JP H0143994Y2
- Authority
- JP
- Japan
- Prior art keywords
- tightening
- piece
- band
- seat tube
- tightening screw
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000011435 rock Substances 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000005452 bending Methods 0.000 description 2
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
Landscapes
- Clamps And Clips (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は自転車用フロントデイレーラー、詳し
くは、自転車フレームのシートチユーブに固定す
るバンド部材に、チエンガイドをもつた搖動部材
を支持し、前記チエンガイドで案内するチエンを
多段フロントギヤ装置の一つのフロントギヤに掛
換えて変速する如くした自転車用フロントデイレ
ーラーに関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention is a front derailleur for a bicycle, more specifically, a rocking member having a chain guide is supported on a band member fixed to a seat tube of a bicycle frame. This invention relates to a bicycle front derailleur in which a chain guided by a chain guide is replaced with one front gear of a multi-stage front gear device to change gears.
(従来の技術)
従来、此種デイレーラーとして、実公昭57−
42155号公報に記載されている通り、前記シート
チユーブに巻装する略C字形のバンド本体と、該
バンド本体の両端から相対向状に外方に突出する
一対の締付片と、これら締付片を締込む締付ねじ
とを備えたバンド部材と、一端にチエンガイドを
設けた一つの搖動部材とから成り、前記締付ねじ
の回転操作により前記バンド部材を縮径して前記
シートチユーブに固定すると共に、前記バンド本
体に、貫通孔をもつた一対の取付片を設けて、こ
れら取付片に、一本の枢支軸を介して前記搖動部
材を回転可能に取付け、この搖動部材の他端に取
付ける操作ワイヤの牽引操作により前記搖動部材
を搖動し、前記チエンガイドで案内するチエンを
多段フロントギヤ装置の一つのフロントギヤに掛
換て変速する如く構成したものが提案されてい
る。(Prior art) Conventionally, as this type of derailleur,
As described in Publication No. 42155, a substantially C-shaped band body wrapped around the seat tube, a pair of tightening pieces protruding outward from opposite ends of the band body, and these tightening pieces are provided. It consists of a band member equipped with a tightening screw for tightening the sheet tube, and one swinging member provided with a chain guide at one end, and the diameter of the band member is reduced by rotation of the tightening screw and attached to the seat tube. At the same time, the band main body is provided with a pair of mounting pieces each having a through hole, and the swinging member is rotatably mounted to these mounting pieces via a single pivot shaft. A structure has been proposed in which the swinging member is rocked by a pulling operation of an operating wire attached to the end, and the chain guided by the chain guide is connected to one front gear of a multi-stage front gear device to change speed.
(考案が解決しようとする問題点)
所が、この従来構造の場合、バンド部材のシー
トチユーブへの取付構造と、搖動部材のバンド部
材への取付構造とを設ける必要があるため、構造
が複雑であるばかりか、組付性が悪く、全体とし
てコスト高となる問題があり、又、前記バンド部
材のシートチユーブへの取付構造がシートチユー
ブに対し外方に大きく突出して大形化するばかり
か、邪魔になり、又、外観も悪くなる問題があつ
た。(Problem to be solved by the invention) However, in the case of this conventional structure, it is necessary to provide an attachment structure for the band member to the seat tube and an attachment structure for the rocking member to the band member, so the structure is complicated. Not only that, but there is also a problem that the assembly is difficult and the cost increases as a whole.Furthermore, the structure for attaching the band member to the seat tube protrudes outward from the seat tube, resulting in an increase in size. However, there were problems in that it became a nuisance and also had a bad appearance.
本考案の目的は、従来において、バンド部材の
シートチユーブへの取付構造と、搖動部材のバン
ド部材への取付構造とを各別に設ける必要がある
問題点を解消しようとするもので、バンド部材の
シートチユーブへの取付構造を利用し、この取付
構造によりバンド部材の取付けと、搖動部材の取
付けとを一緒に行なうことができるようにするこ
とによつて、搖動部材の取付構造を殊更設ける必
要がないようにしたのである。 The purpose of the present invention is to solve the conventional problem of having to provide separate mounting structures for the band member to the seat tube and the rocking member to the band member. By utilizing the mounting structure to the seat tube and making it possible to attach the band member and the rocking member at the same time, there is no need to provide a special mounting structure for the rocking member. I made sure that there was no such thing.
(問題点を解決するための手段)
しかして、自転車のシートチユーブに巻装する
バンド本体の両端から相対向状に突出する1対の
締付片とこれら締付片を締込む締付けねじとを備
えたバンド部材と、一端にチエンガイドを設けた
一つの搖動部材とから成り、該搖動部材に枢着部
を設けて、前記搖動部材を前記締付ねじに、一定
範囲搖動可能に枢着したものである。(Means for Solving the Problem) Therefore, a pair of clamping pieces projecting oppositely from both ends of a band body wrapped around a bicycle seat tube, and a tightening screw for tightening these clamping pieces. A swinging member is provided with a chain guide at one end, and the swinging member is provided with a pivot portion, and the swinging member is pivoted to the tightening screw so as to be able to swing within a certain range. It is something.
(作用)
バンド本体をシートチユーブに巻装すると共
に、搖動部材の枢着部をバンド部材の締付ねじに
支持し、この締付ねじを一対の締付片間に支持し
て締込むことにより前記バンド本体を縮径して、
前記バンド部材をシートチユーブに固定すると共
に、前記搖動部材を前記バンド部材に搖動自由に
支持するのである。(Function) By wrapping the band body around the seat tube, supporting the pivoting part of the rocking member on the tightening screw of the band member, supporting this tightening screw between a pair of tightening pieces, and tightening it. reducing the diameter of the band body;
The band member is fixed to the seat tube, and the rocking member is supported by the band member so as to be freely rockable.
(実施例)
以下本考案デイレーラーの一実施例を図面に基
づいて説明する。(Embodiment) An embodiment of the derailleur of the present invention will be described below based on the drawings.
図において、1は自転車フレームのシートチユ
ーブSに巻回する略C字形のバンド本体11と、
該バンド本体11の両端から相対向状に外方に突
出する一対の第1及び第2締付片12,13と、
これら締付片12,13を締込む締付ねじ14と
から成るバンド部材であり、2は一端にチエンガ
イド21を設けた搖動部材であつて、この搖動部
材2の他端に操作ワイヤWの固定具22を設ける
と共に、長さ方向中間に貫通孔23aをもつた枢
着部23を設け、この枢着部23を前記締付ねじ
14に一定範囲搖動可能に枢着するのである。
又、3はリターンばねであつて、このリターンば
ね3を前記締付ねじ14に巻装して、その一端を
前記第1締付片12に当接し、他端を前記搖動部
材2に係止して、該搖動部材2を一方向に付勢し
ている。 In the figure, 1 is a substantially C-shaped band body 11 that is wound around a seat tube S of a bicycle frame;
a pair of first and second fastening pieces 12 and 13 protruding outward from both ends of the band body 11 in opposing directions;
It is a band member consisting of a tightening screw 14 that tightens these tightening pieces 12 and 13, and 2 is a swinging member having a chain guide 21 at one end, and the operating wire W is connected to the other end of this swinging member 2. In addition to providing the fixture 22, a pivot portion 23 having a through hole 23a is provided in the middle in the longitudinal direction, and this pivot portion 23 is pivotally attached to the tightening screw 14 so as to be able to swing within a certain range.
Further, 3 is a return spring, and this return spring 3 is wound around the tightening screw 14, one end of which is brought into contact with the first tightening piece 12, and the other end is locked with the swinging member 2. Thus, the rocking member 2 is biased in one direction.
又、前記バンド部材1は、金属板を用い、打
抜、折曲加工により形成するもので、バンド本体
11の湾曲方向中央部にはヒンジ15を設け、
又、前記締付片12,13には前記締付ねじ14
の軸心と直交する方向に延びる長孔12a,13
aを設けている。又、前記第1締付片12には、
その三側縁から内側に向つて突出して前記リター
ンばね3のコイル部31を覆う断面略コ字形のカ
バー16を設け、更にこのカバー16の先端に、
前記第1締付片12と対向し、前記長孔12aに
対応する長孔17aをもつた閉鎖片17を設ける
一方、前記カバー16の先端上部から前記第2締
付片13方向に突出する保持片18を突設し、該
保持片18に、前記搖動部材2の搖動範囲を規制
する一対の第1、第2調整ねじ4,5を保持して
いる。又、前記第2締付片13には、その三側縁
から内側に向つて突出する断面略コ字状の鍔13
bを設けている。 The band member 1 is formed by punching and bending a metal plate, and a hinge 15 is provided at the center of the band body 11 in the bending direction.
Further, the tightening screws 14 are attached to the tightening pieces 12 and 13.
long holes 12a, 13 extending in a direction perpendicular to the axis of the
A is provided. Further, the first tightening piece 12 includes:
A cover 16 having a substantially U-shaped cross section is provided that protrudes inward from the three side edges and covers the coil portion 31 of the return spring 3, and furthermore, at the tip of this cover 16,
A closing piece 17 is provided facing the first tightening piece 12 and having an elongated hole 17a corresponding to the elongated hole 12a, while a retainer protrudes from the top end of the cover 16 in the direction of the second tightening piece 13. A protruding piece 18 is provided, and the holding piece 18 holds a pair of first and second adjusting screws 4 and 5 for regulating the swinging range of the swinging member 2. Further, the second fastening piece 13 has a collar 13 having a substantially U-shaped cross section and protruding inward from its three side edges.
b.
又、前記搖動部材2は、その長さ方向一端に、
前記締付ねじ14の軸心と同方向に延びる支持片
24と、該支持片24の先端から前記締付ねじ1
4の軸心と直交する方向に延びて前記閉鎖片17
と対向する取付片25とを備え、前記支持片24
に、前記チエンガイド21を取付け、また前記取
付片25に、前記貫通孔23aに対応する貫通孔
25aを設けて、これら貫通孔23a,25aに
前記締付ねじ14を挿通するのであり、又、前記
取付片25に、前記調整ねじ4,5と対向する1
対の当たり部26a,26bをもつた受座26を
設けている。 Moreover, the rocking member 2 has one end in its length direction,
A support piece 24 extends in the same direction as the axis of the tightening screw 14, and a support piece 24 extends from the tip of the support piece 24 to the tightening screw 1.
The closing piece 17 extends in a direction perpendicular to the axis of
and a mounting piece 25 facing the supporting piece 24.
The chain guide 21 is attached to the mounting piece 25, and a through hole 25a corresponding to the through hole 23a is provided in the mounting piece 25, and the tightening screw 14 is inserted into these through holes 23a, 25a. 1 facing the adjustment screws 4 and 5 on the mounting piece 25;
A catch seat 26 having a pair of abutting portions 26a and 26b is provided.
又、前記チエンガイド21は、相対向するイン
ナープレート21aとアウタープレート21bと
から成り、これらインナープレート21a及びア
ウタープレート21bの長さ方向一端側上縁を前
記支持片24に取付けている。 The chain guide 21 is composed of an inner plate 21a and an outer plate 21b facing each other, and the upper edges of the inner plate 21a and the outer plate 21b on one end in the length direction are attached to the support piece 24.
又、前記締付ねじ14は、頭付ボルト14a
と、ねじ孔14cをもつた頭付ナツト体14bと
から成り、このナツト体14bを、前記搖動部材
2の貫通孔23a,25aと第1締付片12及び
閉鎖片17の長孔12a,17aに挿通して、該
ナツト体14bを介して前記搖動部材2を第1締
付片12に支持すると共に、前記ナツト体14b
の外周に前記リターンばね3を巻装するのであ
り、又、前記ボルト14aを前記第2締付片13
の長孔13aに挿通して前記ナツト体14bのね
じ孔14cに螺合するのである。 Further, the tightening screw 14 is a head bolt 14a.
and a headed nut body 14b having a screw hole 14c. is inserted into the nut body 14b to support the rocking member 2 on the first tightening piece 12 via the nut body 14b.
The return spring 3 is wound around the outer circumference of the bolt 14a, and the bolt 14a is wrapped around the second tightening piece 13.
It is inserted into the elongated hole 13a and screwed into the screw hole 14c of the nut body 14b.
又、前記リターンばね3は、コイル部31と、
該コイル部31の一端から径方向外方に突出する
第1係止片32と、他端から軸方向外方に突出す
る第2係止片33とから成り、前記第1係止片3
2を前記カバー16の内面に当接し、第2係止片
33を前記閉鎖片17の長孔17aから外方に突
出させて前記取付片25に設ける係止孔25bに
係止し、前記搖動部材2を第1図において矢印X
方向に付勢し、常時は、搖動部材2の当たり部2
6a,26bが第1調整ねじ4に当接し、前記チ
エンガイド21が多段フロントギヤ装置の小径フ
ロントギヤに対応した位置に停止する如く所謂ロ
ーノーマルにしている。 Further, the return spring 3 includes a coil portion 31 and
It consists of a first locking piece 32 that projects outward in the radial direction from one end of the coil portion 31 and a second locking piece 33 that projects outward in the axial direction from the other end.
2 is brought into contact with the inner surface of the cover 16, the second locking piece 33 is projected outward from the elongated hole 17a of the closing piece 17 and is locked in the locking hole 25b provided in the mounting piece 25, and the swinging Component 2 is indicated by arrow X in FIG.
The abutting portion 2 of the rocking member 2 is normally
6a and 26b come into contact with the first adjusting screw 4, and the chain guide 21 is stopped at a position corresponding to the small diameter front gear of the multi-stage front gear device, so that the so-called low normal state is achieved.
尚、図中6は前記ナツト体14bの外周に嵌合
するスリーブである。 Note that 6 in the figure is a sleeve that fits around the outer periphery of the nut body 14b.
本考案は以上の如く構成するもので、自転車フ
レームのシートチユーブSへの装着に先立つて、
搖動部材2及びリターンばね3を締付ねじ14を
介してバンド部材1に支持し、然る後、このバン
ド部材1を前記シートチユーブSに固定するので
ある。 The present invention is constructed as described above, and prior to attaching the bicycle frame to the seat tube S,
The rocking member 2 and the return spring 3 are supported on the band member 1 via the tightening screw 14, and then the band member 1 is fixed to the seat tube S.
即ち、搖動部材2の枢着部23及び取付片25
をバンド部材1における第1締付片12及び閉鎖
片17の外側に配置すると共に、リターンばね3
をカバー16内に配置して、締付ねじ14のナツ
ト体14bを搖動部材2の貫通孔23a、第1締
付片12の長孔12a、リターンばね3のコイル
部31内、閉鎖片17の長孔17a及び前記取付
片25の貫通孔25aに挿通して、このナツト体
14bを介して前記搖動部材2及びリターンばね
3を前記第1締付片12に支持し、然る後、バン
ド本体11を、ヒンジ部15を中心に拡開して、
前記シートチユーブSの外周に巻回し、締付ねじ
14のボルト14aを第2締付片13の長孔13
aに挿通して該ボルト14aを前記ナツト体14
bのねじ孔14cに螺合するのである。 That is, the pivot portion 23 and the mounting piece 25 of the rocking member 2
is arranged outside the first tightening piece 12 and the closing piece 17 in the band member 1, and the return spring 3
is placed in the cover 16, and the nut body 14b of the tightening screw 14 is inserted into the through hole 23a of the rocking member 2, the elongated hole 12a of the first tightening piece 12, inside the coil part 31 of the return spring 3, and in the closing piece 17. It is inserted into the elongated hole 17a and the through hole 25a of the attachment piece 25, and the rocking member 2 and return spring 3 are supported on the first tightening piece 12 via this nut body 14b. 11 is expanded around the hinge part 15,
Wrap it around the outer periphery of the seat tube S, and insert the bolt 14a of the tightening screw 14 into the elongated hole 13 of the second tightening piece 13.
a and insert the bolt 14a into the nut body 14.
It is screwed into the screw hole 14c of b.
そして、このボルト14aの締込みにより、前
記第2締付片13を第1締付片12側に撓ませて
バンド本体11を縮径し、前記バンド部材1をシ
ートチユーブSに取付けるのであつて、このバン
ド部材1の取付けにより、前記搖動部材2を搖動
自由に取付けることができるのである。 By tightening this bolt 14a, the second tightening piece 13 is bent toward the first tightening piece 12, the diameter of the band body 11 is reduced, and the band member 1 is attached to the seat tube S. By attaching this band member 1, the swinging member 2 can be mounted to freely swing.
このようにバンド部材1をシートチユーブSに
取付けるための締付ねじ14により、搖動部材2
及びリターンばね3をバンド部材1に取付けるこ
とができるので、搖動部材2及びリターンばね3
専用の取付構造をなくすることができ、それだけ
構造を簡素化できると共に、組付性を良好にでき
るのであり、又、前記バンド部材1のシートチユ
ーブSへの組付構造、即ち、第1、第2締付片1
2,13及び締付ねじ14がチエンガイド21に
対し変位した位置からシートチユーブSの径方向
外方に突出することがないので、全体を小型化で
きると共に、前記バンド部材1の取付構造が邪魔
になこともないのであり、又、外観も良好にでき
るのである。又、前記カバー16によるリターン
ばね3の隠蔽によつて、該リターンばね3に砂
塵、雨水などがかゝるのを防止でき、リターンば
ね3部分のシール性を良好にできると共に、外観
をより一層良好にできるのである。 As described above, the tightening screw 14 for attaching the band member 1 to the seat tube S allows the rocking member 2
and the return spring 3 can be attached to the band member 1.
It is possible to eliminate a dedicated mounting structure, simplify the structure, and improve the ease of assembly. Second tightening piece 1
2, 13 and the tightening screw 14 do not protrude outward in the radial direction of the seat tube S from the position where they are displaced relative to the chain guide 21, so the overall size can be reduced, and the mounting structure of the band member 1 does not get in the way. Moreover, the appearance can be improved. Furthermore, by concealing the return spring 3 with the cover 16, it is possible to prevent dust, rainwater, etc. from getting on the return spring 3, improve the sealing performance of the return spring 3 portion, and further improve the appearance. It can be done well.
又、前記締付ねじ14を、前記第1、第2締付
片12,13及び閉鎖片17の長孔12a,13
a,17aの範囲内でバンド部材1に対しシート
チユーブSの径方向に移動させて、前記チエンガ
イド21の小径フロントギヤに対する位置を調整
するのである。従つて、この場合、前記第1調整
ねじ4を殊更調整する必要がないのである。又、
前記リターンばね3により前記チエンガイド21
が大径フロントギヤ側に付勢されていて、常時
は、このチエンガイド21が大径フロントギヤに
対応する位置に停止する如く所謂トツプノーマル
になつている場合は、前記第2調整ねじ5を殊更
調整する必要がないのである。 Further, the tightening screw 14 is inserted into the long holes 12a, 13 of the first and second tightening pieces 12, 13 and the closing piece 17.
The position of the chain guide 21 relative to the small-diameter front gear is adjusted by moving the seat tube S in the radial direction relative to the band member 1 within the ranges a and 17a. Therefore, in this case, there is no need to particularly adjust the first adjusting screw 4. or,
The return spring 3 causes the chain guide 21 to
is biased toward the large-diameter front gear, and the chain guide 21 normally stops at a position corresponding to the large-diameter front gear, which is the so-called top normal state, in which case the second adjusting screw 5 should be tightened. There is no need to make any special adjustments.
尚、以上説明した実施例では、締付ねじ14に
搖動部材2とリターンばね3とを支持したが、こ
のリターンばね3は必ずしも前記締付ねじ14に
支持する必要はない。 In the embodiment described above, the rocking member 2 and the return spring 3 are supported by the tightening screw 14, but the return spring 3 does not necessarily need to be supported by the tightening screw 14.
又、締付ねじ14として、ナツト体14bとボ
ルト14aとを用い、ナツト体14bに搖動部材
2及びリターンばね3を支持したが、その他、ボ
ルト14aのみを用いてもよい。この場合、例え
ば前記第1締付片12にねじ孔を設けて、このね
じ孔に前記ボルトを螺合すると共に、前記搖動部
材2、リターンばね3を前記ボルトに直接支持し
てもよいし、又、前記第1締付片12に、ねじ孔
をもつた筒体を一体に設けて、この筒体の外周に
前記搖動部材2、リターンばね3を支持すると共
に、前記筒軸のねじ孔に前記ボルトを螺合する如
く構成してもよいのであつて、締付ねじ14の構
造は特に限定されるものでない。又、搖動部材2
の構造も特に限定されるものでない。 Further, as the tightening screw 14, the nut body 14b and the bolt 14a are used, and the rocking member 2 and the return spring 3 are supported on the nut body 14b, but in addition, only the bolt 14a may be used. In this case, for example, a screw hole may be provided in the first tightening piece 12, and the bolt may be screwed into the screw hole, and the rocking member 2 and return spring 3 may be directly supported on the bolt. Further, the first tightening piece 12 is integrally provided with a cylindrical body having a threaded hole, and the swinging member 2 and the return spring 3 are supported on the outer periphery of this cylindrical body, and the threaded hole of the cylindrical shaft is provided with a cylindrical body. The structure of the tightening screw 14 is not particularly limited, and the bolt may be configured to be screwed together. Also, the rocking member 2
The structure of is also not particularly limited.
又、バンド部材1におけるバンド本体11にヒ
ンジ15を設けたが、その他、ヒンジ15のない
構造であつてもよい。 Further, although the hinge 15 is provided on the band body 11 of the band member 1, other structures may be used without the hinge 15.
又、以上の構成において、前記締付ねじ14
は、自転車の前後方向に水平状に設けるのである
が、その他、この締付ねじ14を自転車の前後方
向に向け、かつその後方側が前方側に対し上方に
位置する如く傾斜させ、前記チエンガイド21
が、前記フロントギヤの軸方向に移動するとき、
該チエンガイド21の後方側の変位量を前方側の
変位量に対し大きくしてもよい。斯くすることに
より、特に小径フロントギヤから大径フロントギ
ヤへのチエン掛換時、該チエンを案内する前記チ
エンガイド21の後方側における大きな変位によ
り前方側と後方側とが同じ変位量で変化するもの
に比較し、操作ワイヤの操作時におけるストロー
クを一定にしても前記チエンを変位量の大きい後
方側において迅速に案内させられ、前記大径フロ
ントギヤへの掛換えを迅速に行なうことができる
のである。 Furthermore, in the above configuration, the tightening screw 14
The chain guide 21 is provided horizontally in the front-rear direction of the bicycle, but in addition, the tightening screw 14 is oriented in the front-rear direction of the bicycle and is inclined so that its rear side is located above the front side.
When moving in the axial direction of the front gear,
The amount of displacement on the rear side of the chain guide 21 may be larger than the amount of displacement on the front side. By doing this, especially when changing the chain from a small-diameter front gear to a large-diameter front gear, the front side and the rear side change by the same amount of displacement due to a large displacement on the rear side of the chain guide 21 that guides the chain. Even if the stroke when operating the operating wire is constant, the chain can be quickly guided to the rear side where the amount of displacement is large, and the change to the large-diameter front gear can be performed quickly. be.
(考案の効果)
以上の如く本考案は、バンド部材のシートチユ
ーブへの取付構造を利用し、この取付構造の締付
ねじに、一端にチエンガイドをもつた搖動部材を
一定範囲搖動可能に枢着したから、搖動部材のバ
ンド部材への専用の取付構造をなくすことがで
き、それだけ構造を簡素化できると共に、一つの
締付ねじを回転操作するだけで、バンド部材と搖
動部材とを一挙に取付けることができるので、組
付性を良好にでき、全体としてコストダウンを計
ることができるのである。(Effects of the invention) As described above, the present invention utilizes the mounting structure of the band member to the seat tube, and attaches the swinging member having a chain guide at one end to the tightening screw of this mounting structure so as to be able to swing within a certain range. Because of this, it is possible to eliminate the need for a dedicated mounting structure for the rocking member to the band member, which simplifies the structure, and allows the band member and the rocking member to be attached at once by rotating a single tightening screw. Since it can be attached, ease of assembly can be achieved, and overall costs can be reduced.
しかも前記取付構造が、前記チエンガイドに対
しシートチユーブの周方向に変位した位置から外
方に突出するのを防止できるので、全体を小形化
できると共に、前記取付構造が邪魔になることも
ないのであり、又、外観も良好にできるのであ
る。 Moreover, since the mounting structure can be prevented from protruding outward from the position displaced in the circumferential direction of the seat tube with respect to the chain guide, the overall size can be reduced and the mounting structure does not get in the way. Moreover, the appearance can be improved.
第1図は本考案デイレーラーの一実施例を示す
一部を省略した拡大横断平面図、第2図は第1図
−線断面図、第3図は第1図−線断面
図、第4図は斜視図である。
1……バンド部材、11……バンド本体、1
2,13……締付片、14……締付ねじ、2……
搖動部材、21……チエンガイド、23……枢着
部。
Fig. 1 is an enlarged cross-sectional plan view with some parts omitted showing one embodiment of the derailleur of the present invention, Fig. 2 is a cross-sectional view taken along the line of Fig. 1, Fig. 3 is a cross-sectional view taken along the line of Fig. 1, and Fig. 4. is a perspective view. 1...Band member, 11...Band body, 1
2, 13...Tightening piece, 14...Tightening screw, 2...
Swing member, 21... chain guide, 23... pivot portion.
Claims (1)
の両端から相対向状に突出する1対の締付片とこ
れら締付片を締込む締付けねじとを備えたバンド
部材と、一端にチエンガイドを設けた一つの搖動
部材とから成り、該搖動部材に枢着部を設けて、
前記搖動部材を前記締付ねじに、一定範囲搖動可
能に枢着したことを特徴とする自転車用フロント
デイレーラー。 A band member is provided with a pair of tightening pieces projecting oppositely from both ends of a band body to be wrapped around a seat tube of a bicycle, a tightening screw for tightening these tightening pieces, and a chain guide provided at one end. one rocking member, the rocking member is provided with a pivot joint,
A front derailleur for a bicycle, characterized in that the rocking member is pivotally connected to the tightening screw so that it can rock within a certain range.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984189204U JPH0143994Y2 (en) | 1984-12-12 | 1984-12-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1984189204U JPH0143994Y2 (en) | 1984-12-12 | 1984-12-12 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS61103287U JPS61103287U (en) | 1986-07-01 |
JPH0143994Y2 true JPH0143994Y2 (en) | 1989-12-20 |
Family
ID=30746660
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1984189204U Expired JPH0143994Y2 (en) | 1984-12-12 | 1984-12-12 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0143994Y2 (en) |
-
1984
- 1984-12-12 JP JP1984189204U patent/JPH0143994Y2/ja not_active Expired
Also Published As
Publication number | Publication date |
---|---|
JPS61103287U (en) | 1986-07-01 |
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