JPH0347234B2 - - Google Patents
Info
- Publication number
- JPH0347234B2 JPH0347234B2 JP16149783A JP16149783A JPH0347234B2 JP H0347234 B2 JPH0347234 B2 JP H0347234B2 JP 16149783 A JP16149783 A JP 16149783A JP 16149783 A JP16149783 A JP 16149783A JP H0347234 B2 JPH0347234 B2 JP H0347234B2
- Authority
- JP
- Japan
- Prior art keywords
- transmission
- pawl
- hub
- ratchet
- saver
- 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
- 230000005540 biological transmission Effects 0.000 claims description 105
- 210000000078 claw Anatomy 0.000 claims description 12
- 238000003780 insertion Methods 0.000 description 2
- 230000037431 insertion Effects 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000000881 depressing effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
- B62M11/00—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels
- B62M11/04—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio
- B62M11/14—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears
- B62M11/16—Transmissions characterised by the use of interengaging toothed wheels or frictionally-engaging wheels of changeable ratio with planetary gears built in, or adjacent to, the ground-wheel hub
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Structure Of Transmissions (AREA)
- Transmission Devices (AREA)
Description
【発明の詳細な説明】
本発明は、自転車用変速ハブにおける伝動爪の
制御機構、詳しくは、自転車用変速ハブにおける
ハブ軸と平行な爪軸により伝動爪を起伏自由に支
持し、該伝動爪を爪ばねにより起立方向に附勢し
て、被駆動部材側に設けるラチツトに噛合わせ伝
動するごとくした前記伝動爪の制御機構に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention provides a control mechanism for a transmission pawl in a bicycle transmission hub, and more specifically, a transmission pawl is supported freely up and down by a pawl shaft parallel to a hub axis in a bicycle transmission hub, and the transmission pawl is The present invention relates to a control mechanism for the power transmission pawl, in which the transmission pawl is biased in the upright direction by a pawl spring to engage and transmit the transmission to a latch provided on the driven member side.
従来、此種制御機構は、操作体を操作すること
により、被駆動部材側に設けたラチエツトに対
し、伝動爪を強制的に起立噛合及び離脱倒伏させ
て、ペダル踏込みによる駆動力を、前記伝動爪、
ラチエツトを経由させる変速状態と非経由させる
変速状態とに切換えるごとく構成している。 Conventionally, this type of control mechanism forcibly raises, engages, and disengages a transmission pawl with respect to a ratchet provided on the driven member side by operating an operating body, and transfers the driving force from the pedal depression to the transmission pawl. nail,
The configuration is such that the gear change state can be switched between a state in which the gear is changed through the ratchet and a state in which the gear is not changed through the ratchet.
ところが、前記ラチエツトに対し前記伝動爪を
噛合させた変速状態で、操作体により、ラチエツ
トから伝動爪を離脱させる変速操作を、ペダル踏
込みによる駆動時に行なつた場合、伝動爪には走
行負荷が加わつたラチエツトが強固に対向噛合し
ているため、伝動爪はラチエツトから離脱作動で
きず、従つて変速できなかつたのであり、変速す
るには、その都度面倒でも駆動を停止させて行な
う必要があつた。 However, when the transmission pawl is engaged with the ratchet and the transmission pawl is engaged with the ratchet, when a speed change operation is performed to disengage the transmission pawl from the ratchet while the pedal is being driven by pressing the pedal, a running load is applied to the transmission pawl. Because the ratchets were tightly meshed with each other, the transmission pawl could not be moved away from the ratchets, and therefore the gear could not be changed.In order to change the gear, it was necessary to stop the drive each time, even if it was a hassle. .
本発明の目的は、被駆動部材側に設けるラチエ
ツトに対し伝動爪を噛合させた変速状態で、ラチ
エツトから伝動爪を離脱させる変速操作を、ペダ
ル踏込みによる駆動時であつて、伝動爪に走行負
荷が加わつたラチエツトが強固に対向噛合した状
態で行なつても、容易にラチエツトから伝動爪を
離脱倒伏させる変速状態に切換できる自転車用変
速ハブにおける伝動爪の制御機構を提供する点に
ある。 An object of the present invention is to perform a speed change operation in which the transmission pawl is engaged with a ratchet provided on the driven member side, and to remove the transmission pawl from the ratchet when the transmission pawl is driven by depressing the pedal. To provide a control mechanism for a transmission pawl in a bicycle transmission hub capable of easily switching to a transmission state in which the transmission pawl is disengaged from the ratchet and laid down even when the ratchets are strongly opposed and engaged.
本発明の構成は、自転車用変速ハブにおけるハ
ブ軸と平行な爪軸により伝動爪を起伏自由に支持
し、該伝動爪を爪ばねにより起立方向に附勢し
て、被駆動部材側に設けるラチエツトに噛合わせ
伝動するごとくした前記伝動爪の制御機構であつ
て、前記ハブ軸の方向に移動操作する操作体を設
けて、該操作体と前記伝動爪との間に、前記操作
体の移動に連動して動作する操作部と、この操作
部の動作で蓄勢するセーバ部とを備え、前記伝動
爪のラチエツトへの噛合いによる伝動時、前記操
作体の移動操作に連動する操作部の動作により前
記セーバ部において蓄勢する力を前記伝動爪に伝
え、該伝動爪に、前記爪ばねの附勢力より大きい
倒伏方向の附勢力を与えるセーバ部材を設けて、
前記操作体の移動による操作力を蓄勢可能にした
ことを特徴とするものである。 The structure of the present invention is such that a transmission pawl is supported freely up and down by a pawl shaft parallel to the hub axis of a bicycle transmission hub, and the transmission pawl is biased in the upright direction by a pawl spring, and a ratchet provided on the driven member side. The control mechanism for the transmission pawl is configured to mesh with and transmit power to the transmission pawl, wherein an operation body for moving in the direction of the hub shaft is provided, and a mechanism is provided between the operation body and the transmission pawl to control the movement of the operation body. An operating section that operates in conjunction with a saver section that stores energy by the operation of the operating section, and when the transmission claw engages with the ratchet to transmit power, the operating section operates in conjunction with the moving operation of the operating body. A saver member is provided that transmits the force stored in the saver portion to the transmission pawl and applies a biasing force in the lodging direction that is greater than the biasing force of the pawl spring to the transmission pawl,
The present invention is characterized in that the operating force generated by the movement of the operating body can be stored.
以下、本発明機構の実施例を図面に基づいて説
明する。 Embodiments of the mechanism of the present invention will be described below based on the drawings.
図面に示したものは、高速、中速、低速の三段
変速を行ない得る自転車用変速ハブに適用したも
ので、先ずこの自転車用変速ハブを概略説明する
と、自転車フレームに支持するハブ軸１に駆動体
２を回動可能に取付けると共に、該駆動体２にハ
ブ胴３を回動可能に取付けてこれら駆動体２とハ
ブ胴３との間に、変速操作する操作体４により、
駆動体２からの駆動力を変速してハブ胴３に伝達
する変速機構５を設けているのである。 The one shown in the drawing is applied to a bicycle transmission hub that can perform three-speed shifting of high speed, medium speed, and low speed. First, to give an overview of this bicycle transmission hub, there is a hub shaft 1 supported on the bicycle frame. The drive body 2 is rotatably attached, the hub body 3 is rotatably attached to the drive body 2, and an operating body 4 is provided between the drive body 2 and the hub body 3 to perform a speed change operation.
A transmission mechanism 5 is provided that changes the speed of the driving force from the driving body 2 and transmits it to the hub body 3.
更に詳記すると、前記ハブ軸１の一側におい
て、チエンギヤG1をもつた前記駆動体２を、軸
受B1を介して枢支すると共に、前記ハブ胴３を、
前記駆動体２と前記ハブ軸１の他側とに対し、軸
受B2，B3を介して枢支している。 More specifically, on one side of the hub shaft 1, the driving body 2 having a chain gear G1 is pivotally supported via a bearing B1 , and the hub body 3 is
It is pivotally supported to the drive body 2 and the other side of the hub axle 1 via bearings B 2 and B 3 .
また、前記変速機構５は、前記操作体４により
作動されるクラツチ５１と、前記駆動体２からの
駆動力が伝達されて駆動される伝動筒５２と、該
伝動筒５２から前記ハブ胴３に駆動力を伝達する
リングギヤ５３及びギヤ枠５４とにより構成する
のである。 The transmission mechanism 5 also includes a clutch 51 operated by the operating body 4, a transmission cylinder 52 to which the driving force from the drive body 2 is transmitted and driven, and a transmission cylinder 52 that is connected to the hub body 3. It is composed of a ring gear 53 and a gear frame 54 that transmit driving force.
この変速機構５のクラツチ５１は、前記ハブ軸
１における駆動体２の内側（第１図の左側）に軸
方向移動自由に嵌挿して、弾機５５により常時駆
動体２の軸方向外方に附勢すると共に、この軸方
向外方への動きを阻止部材５６により阻止すべく
している。 The clutch 51 of the transmission mechanism 5 is fitted inside the drive body 2 of the hub shaft 1 (on the left side in FIG. 1) so as to be freely movable in the axial direction. At the same time, this outward movement in the axial direction is prevented by a blocking member 56.
また、前記伝動筒５２は、前記クラツチ５１周
りの駆動体２近くの部位から、クラツチ５１の内
方部位に亘り延伸して回転自由に枢支すると共
に、前記駆動体２に対し、該駆動体２の正方向の
駆動時、噛合して駆動力を伝動する一方向回転伝
動機構５７を設けている。 Further, the transmission cylinder 52 extends from a part near the driving body 2 around the clutch 51 to an inward part of the clutch 51 and is rotatably supported, and also supports the driving body 2 with respect to the driving body 2. A one-way rotation transmission mechanism 57 is provided that meshes with each other and transmits the driving force when driven in the forward direction of the two.
また、前記ギヤ枠５４は、前記伝動筒５２の内
方延伸部周りから前記ハブ軸１の軸受B3側部位
に亘り回転自由に配置すると共に、軸方向中間部
に遊星歯車G2を枢支し、かつ該遊星歯車G2に噛
合する太陽歯車G1を前記固定軸１に設ける。 Further, the gear frame 54 is arranged to be freely rotatable from around the inward extending portion of the transmission cylinder 52 to the bearing B 3 side portion of the hub shaft 1, and pivotally supports the planetary gear G 2 at an axially intermediate portion. The fixed shaft 1 is provided with a sun gear G1 that meshes with the planetary gear G2 .
そして、前記伝動筒５２に対し被駆動部材とな
る前記ギヤ枠５４にラチエツト６１を形成し、ま
た、該ラチエツト６１に噛合する係合部６ａをも
つた伝動爪６を、伝動筒５２に、前記ハブ軸１と
平行な爪軸６２により起伏自由に支持し、この伝
動爪６を爪ばね６３により起立方向に附勢して、
該伝動爪６の係合部６ａを前記ラチエツト６１に
噛合させることにより、伝動筒５２の駆動力をギ
ヤ枠５４に伝動すべくしている。 A ratchet 61 is formed on the gear frame 54 which is a driven member relative to the transmission cylinder 52, and a transmission pawl 6 having an engaging portion 6a that meshes with the ratchet 61 is attached to the transmission cylinder 52. It is supported freely up and down by a pawl shaft 62 parallel to the hub shaft 1, and this transmission pawl 6 is biased in the upright direction by a pawl spring 63.
By meshing the engaging portion 6a of the transmission pawl 6 with the ratchet 61, the driving force of the transmission cylinder 52 is transmitted to the gear frame 54.
また、前記ギヤ枠５４における、前記伝動爪６
の支持位置から軸受B2側において前記ハブ胴３
に対し、ローラ３１…をケース３２に収容したリ
テーナＲと制動機構Ｂとを並設して、前記リテー
ナＲにより、ギヤ枠５４に伝達された駆動力を、
前記ハブ胴３に伝達すべくしている。 Further, the transmission pawl 6 in the gear frame 54
from the supporting position of the hub body 3 on the bearing B 2 side.
On the other hand, a retainer R housing the rollers 31 in a case 32 and a braking mechanism B are arranged in parallel, and the driving force transmitted to the gear frame 54 by the retainer R is
It is intended to be transmitted to the hub body 3.
つぎに、前記リングギヤ５３は、前記ハブ胴３
の内側で、前記伝動筒５２からギヤ枠５４の遊星
歯車G2の支持位置迄に亘り回転自由に配置して、
前記遊星歯車G2との対応部位に該歯車G2と噛合
する伝達ギヤG4を形成すると共に、駆動体２側
において、このリングギヤ５３に対し被駆動部材
となるハブ胴３にラチエツト７１を形成し、ま
た、該ラチエツト７１に噛合する係合部７ａをも
つた伝動爪７を、前記リングギヤ５３に、前記ハ
ブ軸１と平行な爪軸７２により起伏自由に支持
し、この伝動爪７を爪ばね７３により起立方向に
附勢して、該伝動爪７の係合部７ａを前記ラチエ
ツト７１に噛合わせることにより前記ギヤ枠５４
から遊星歯車G2を介して増速してリングギヤ５
３に伝達された駆動力を、ハブ胴３に伝動すべく
している。 Next, the ring gear 53 is connected to the hub body 3.
is arranged so as to be freely rotatable from the transmission cylinder 52 to the support position of the planetary gear G2 of the gear frame 54,
A transmission gear G 4 that meshes with the planetary gear G 2 is formed at a corresponding portion to the planetary gear G 2 , and a ratchet 71 is formed on the hub body 3 that is a driven member for the ring gear 53 on the driving body 2 side. In addition, a transmission pawl 7 having an engaging portion 7a that meshes with the ratchet 71 is supported on the ring gear 53 by a pawl shaft 72 parallel to the hub shaft 1 so that it can rise and fall freely. The gear frame 54 is biased in the upright direction by the spring 73 to engage the engaging portion 7a of the transmission pawl 7 with the ratchet 71.
The speed is increased from the planetary gear G2 to the ring gear 5.
The driving force transmitted to the hub body 3 is transmitted to the hub body 3.
また、このリングギヤ５３の駆動体２側端部と
前記伝動筒５２との間には、前記伝動爪７が倒伏
してハブ胴３に対する駆動力の非伝動時、互いに
噛合して伝動筒５２の駆動力を伝動する一方向回
転動構機５８を設けている。 Further, when the transmission pawl 7 lies down and does not transmit the driving force to the hub body 3, the transmission pawl 7 is disposed between the end of the ring gear 53 on the drive body 2 side and the transmission cylinder 52, and when the driving force is not transmitted to the hub body 3, the transmission claws 7 mesh with each other and the transmission cylinder 52 A one-way rotation mechanism 58 is provided to transmit driving force.
斯くして、前記両伝動爪６，７をともに起立さ
せ、それぞれラチエツト６１，７１に噛合させる
ことにより、駆動体２の駆動力を、伝動筒５２、
ギヤ枠５４、遊星歯車G2、リンチギヤ５３から
ハブ胴３に至る伝動経路を伝動させて高速変速状
態となし、また、前記伝動爪７のみ倒伏させるこ
とにより、駆動体２の駆動力を、伝動筒５２、ギ
ヤ枠５４、ローラ３１…からハブ胴３に至る前記
遊星歯車G2非経由の伝動経路を伝動させて中速
高速状態となし、また、前記両伝動爪６，７をと
もに倒伏させることにより、駆動体２の駆動力
を、伝動筒５２、リングギヤ５３、遊星歯車G2、
ローラ３１…からハブ胴３に至る伝動経路を伝動
させて低速変速状態となすようにしている。 In this way, by raising both the transmission pawls 6 and 7 and meshing them with the ratchets 61 and 71, respectively, the driving force of the drive body 2 is transferred to the transmission cylinder 52,
By transmitting the transmission path from the gear frame 54, the planetary gear G2 , and the Lynch gear 53 to the hub body 3, a high-speed transmission state is achieved, and by lowering only the transmission pawl 7, the driving force of the drive body 2 is transmitted. The transmission path from the cylinder 52, gear frame 54, roller 31... to the hub cylinder 3 without passing through the planetary gear G2 is transmitted to achieve a medium-speed and high-speed state, and both the transmission claws 6 and 7 are both lowered. By doing so, the driving force of the driving body 2 is transferred to the transmission cylinder 52, the ring gear 53, the planetary gear G 2 ,
A transmission path from the rollers 31 to the hub cylinder 3 is used to achieve a low speed change state.
しかして、前記操作体４を、前記ハブ軸１の一
端側中心部に穿設された挿通孔１ａに移動自由に
挿入して、この挿入端部を、キーを介して前記ク
ラツチ５１の内面に取付け、前記操作体４を移動
操作することにより前記クラツチ５１を軸方向に
往復作動させるように成す一方、前記操作体４と
前記伝動爪６，７との間に、前記操作体４の移動
に連動して動作する操作部８２ａ，９２ａと、こ
の操作部８２ａ，９２ａの動作で蓄勢するセーバ
部８２，９２とを備え、前記伝動爪６，７のラチ
エツト６１，７１への噛合いによる伝動時、前記
操作体４の移動操作に連動する操作部８２ａ，９
２ａの動作により前記セーバ部８２，９２におい
て蓄勢する力を前記伝動爪６，７に伝え、該伝動
爪６，７に、前記爪ばね６３，７３の附勢力より
大きい倒伏方向の附勢力を与えるセーバ部材８，
９を設けたのである。 The operating body 4 is freely inserted into the insertion hole 1a formed in the center of one end of the hub shaft 1, and the insertion end is inserted into the inner surface of the clutch 51 via the key. The clutch 51 is reciprocated in the axial direction by mounting and moving the operating body 4, while a mechanism is provided between the operating body 4 and the transmission pawls 6, 7 to prevent movement of the operating body 4. It is equipped with operation parts 82a, 92a that operate in conjunction with each other, and saver parts 82, 92 that store energy by the operation of these operation parts 82a, 92a, and transmits power by meshing the transmission pawls 6, 7 with the latches 61, 71. At this time, the operating parts 82a and 9 are linked to the moving operation of the operating body 4.
2a, the force accumulated in the saver parts 82, 92 is transmitted to the transmission pawls 6, 7, and the transmission pawls 6, 7 are given a biasing force in the direction of lodging that is greater than the biasing force of the pawl springs 63, 73. saver member 8,
9 was established.
そして、前記各伝動爪６，７の係合部６ａ，７
ａと反対側端部には、外方に向かつて突出する突
起状の押圧部６ｂ，７ｂを設けている。 And the engaging portions 6a, 7 of each of the transmission claws 6, 7
Protruding pressing portions 6b and 7b projecting outward are provided at the end opposite to a.
また、第２〜第５図に示した前記両セーバ部材
８，９は、前記伝動爪６，７の一側面と対向する
平板状の揺動部８１，９１を設けて、この揺動部
８１，９１に、前記操作部８２ａ，９２ａと、前
記セーバ部８２，９２及び前記押圧部６ｂ，７ｂ
に係合する作動片８１ａ，９１ａとを弾性板材料
により一体に形成している。更に詳記すると、前
記揺動部８１，９１には、前記爪軸６２，７２に
嵌合する嵌合孔８ａ，９ａを設けて、この嵌合孔
８ａ，９ａを前記爪軸６２，７２に嵌挿して、伝
動爪６，７の一側面に重なり状に揺動自由に取付
けている。そして、この揺動部８１，９１の長さ
方向一端側に、該揺動部８１，９１の板厚方向に
直角状に屈曲し、前記押圧部６ｂ，７ｂに係合す
る前記作動片８１ａ，９１ａを一体に形成し、こ
の作動片８１ａ，９１ａを、起立状態の前記伝動
爪６，７の押圧部６ｂ，７ｂに係合させている。
また、前記揺動部８１，９１の他端側には、該揺
動部８１，９１の板厚方向に直角状に屈曲する前
記セーバ部８２，９２を一体に形成するのであつ
て、このセーバ部８２，９２は、前記揺動部８
１，９１に沿つて前記作動片８１ａ，９１ａの位
置を越えるように細長状に延出させて、その延出
先端部に前記操作部８２ａ，９２ａを設けて、前
記操作体４の移動操作で、前記操作部８２ａ，９
２ａを第２図、第４図矢印Ｘ方向に押圧すること
により、前記セーバ部８２，９２を撓ませて前記
操作体４の操作力を蓄勢し、この蓄勢力を前記作
動片８１ａ，９１ａから前記伝動爪６，７の押圧
部６ｂ，７ｂに第２図、第４図矢印Ｙで示すよう
に伝え、伝動爪６，７を倒伏方向（第２図及び第
４図時計方向）に押圧するのである。 Further, both the saver members 8 and 9 shown in FIGS. 2 to 5 are provided with flat plate-shaped swinging parts 81 and 91 facing one side of the transmission claws 6 and 7. , 91, the operating parts 82a, 92a, the saver parts 82, 92, and the pressing parts 6b, 7b.
The actuating pieces 81a, 91a that engage with are integrally formed of an elastic plate material. More specifically, the swinging parts 81, 91 are provided with fitting holes 8a, 9a that fit into the pawl shafts 62, 72, and the fitting holes 8a, 9a are fitted into the pawl shafts 62, 72. They are fitted and attached to one side of the transmission claws 6 and 7 in an overlapping manner so as to be able to swing freely. The operating piece 81a, which is bent at right angles to the plate thickness direction of the swinging parts 81, 91 and engages with the pressing parts 6b, 7b, is provided at one end in the length direction of the swinging parts 81, 91. 91a is integrally formed, and the operating pieces 81a, 91a are engaged with the pressing portions 6b, 7b of the transmission claws 6, 7 in the upright state.
Further, the saver parts 82 and 92 are integrally formed on the other end sides of the swing parts 81 and 91, and are bent at right angles in the plate thickness direction of the swing parts 81 and 91. The parts 82 and 92 are the swing part 8
1, 91 so as to extend beyond the position of the actuating pieces 81a, 91a, and the operating parts 82a, 92a are provided at the distal ends of the extensions, so that the operating parts 82a, 92a are provided in the distal end portions of the operating pieces 81a, 91a. , the operating portions 82a, 9
2a in the direction of the arrow X in FIGS. 2 and 4, the saver parts 82 and 92 are bent to store the operating force of the operating body 4, and this stored force is transferred to the actuating pieces 81a, 91a to the pressing parts 6b, 7b of the transmission pawls 6, 7 as shown by the arrow Y in FIGS. It's about pressing down.
また、前記操作体４の移動操作により、前記セ
ーバ部材８，９の操作部８２ａ，９２ａを押圧す
る構造について説明すると、先ず一方の伝動爪７
に対するセーバ部材９においては、前記クラツチ
５１の外周両端側を、先細状として傾斜部５１ａ
を形成し、かつ、この傾斜部５１ａの位置を、セ
ーバ部材９の操作部９２ａに対応する位置と成す
と共に、この操作部９２ａと傾斜部５１ａとの間
における前記伝動筒５２の側壁に貫通孔５２ａを
設けて、この貫通孔５２ａに球体ｏを移動自由に
嵌挿し、第１図のごとく、クラツチ５１が最右側
移動位置に位置しているときには、操作部９２ａ
に対した球体ｏを非押圧状態とし、かつ、クラツ
チ５１を第１図左方向に左動させて、中間移動位
置に移動させることにより、傾斜部５１ａにより
球体ｏを外方に押出して操作部９２ａを押圧作動
させるごとく成すのである。 Furthermore, when explaining the structure in which the operation parts 82a and 92a of the saver members 8 and 9 are pressed by the moving operation of the operation body 4, first, one of the transmission claws 7
In the saver member 9, both ends of the outer periphery of the clutch 51 are tapered to form inclined portions 51a.
, and the position of the inclined portion 51a corresponds to the operating portion 92a of the saver member 9, and a through hole is formed in the side wall of the transmission cylinder 52 between the operating portion 92a and the inclined portion 51a. 52a is provided, and the sphere o is freely inserted into the through hole 52a, and when the clutch 51 is located at the rightmost movement position as shown in FIG.
By placing the ball o against the other hand in a non-pressing state and moving the clutch 51 to the left in FIG. This is done by pressing 92a.
また、他方の伝動爪６に対するセーバ部材８に
おいては、第３図のごとく、前記クラツチ５１を
前記中間移動位置からさらに左方に移動させるこ
とにより、傾斜部５１ａを、操作部８２ａの幅方
向一側に向けて移動圧接させて、セーバ部８２の
操作部８２ａを、クラツチ５１の移動方向と直交
する、作動片８１ａ方向に撓み作動させるごとく
成すのである。 In addition, in the saver member 8 for the other transmission pawl 6, as shown in FIG. By moving and pressing it toward the side, the operating section 82a of the saver section 82 is actuated by bending in the direction of the operating piece 81a, which is perpendicular to the direction of movement of the clutch 51.
しかして、以上の構成において、前記両伝動爪
６，７は、ラチエツト６１，７１に強固に噛合し
て駆動力を伝動している状態で、前記操作体４を
移動操作させた場合、前記セーバ部材８，９はそ
れぞれ操作部８２ａ，９２ａが押圧されセーバ部
８２，９２が撓み作動して、操作力が蓄勢された
状態で、作動片８１ａ，９１ａにより爪ばね６
３，７３の附勢力より大きい倒伏方向の附勢力で
伝動爪６，７を倒伏方向に附勢することになる。 Therefore, in the above configuration, when the operation body 4 is moved while the transmission pawls 6 and 7 are firmly engaged with the ratchets 61 and 71 to transmit driving force, the saver In the members 8 and 9, when the operation parts 82a and 92a are pressed and the saver parts 82 and 92 are bent and actuated, and the operation force is stored, the pawl spring 6 is pressed by the actuation pieces 81a and 91a.
The transmission pawls 6 and 7 are urged in the direction of lodging by a force in the direction of lodging that is larger than the force of force of 3 and 73.
そのため、駆動を瞬間でも中断させた場合な
ど、伝動爪６，７のラチエツト６１，７１に対す
る噛合力が一定値以下に小さくなつた場合、直ち
に前記セーバ部材８，９の蓄勢力により伝動爪
６，７は、ラチエツト６１，７１から離間倒伏さ
れて変速されることになるのである。 Therefore, when the engagement force of the transmission pawls 6, 7 with the ratchets 61, 71 becomes smaller than a certain value, such as when the drive is interrupted even momentarily, the power stored in the saver members 8, 9 is immediately applied to the transmission pawls 61, 71. , 7 are moved away from the ratchets 61, 71 and then shifted.
従つて、自転車駆動時、駆動を停止させなくと
も、伝動爪６，７をラチエツト６１，７１から離
間させる変速操作を行なつて容易に所望の変速状
態に切換えできるものである。 Therefore, when driving the bicycle, it is possible to easily switch to a desired speed change state by performing a speed change operation that moves the transmission pawls 6, 7 away from the ratchets 61, 71 without stopping the drive.
尚、以上の説明では、三段変速を可能としたも
のに適用した場合であるが、変速段数の異なる機
種にも適用できるし、かつ前記制動機構Ｂのない
ものなど、伝動爪からラチエツトに駆動力を伝動
する各種の機種のものに適用し得ることは云う迄
もない。 Although the above explanation is applied to a model capable of three-speed shifting, it can also be applied to models with a different number of gears, and it can also be applied to models without the above-mentioned braking mechanism B, which are driven from a transmission pawl to a ratchet. Needless to say, the present invention can be applied to various types of devices that transmit force.
以上のごとく本発明は、被駆動部材側に設ける
ラチエツトに対し伝動爪を噛合させた変速状態
で、ラチエツトから伝動爪を離脱させる変速操作
を、ペダル踏込みによる駆動時であつて、伝動爪
に、走行負荷が加わつたラチエツトが強固に対向
噛合した状態で行なつても、ラチエツトと伝動爪
との噛合力の減少により自動的に容易にラチエツ
トから伝動爪が離脱倒伏した変速状態に切換わる
のであり、従つて、伝動爪に負荷が作用している
状態で変速操作する時、その都度駆動を停止させ
る必要がなく、容易に変速操作が行えることにな
るのである。 As described above, the present invention allows the transmission pawl to be engaged with the ratchet provided on the side of the driven member, and when the transmission pawl is engaged with the ratchet, the transmission pawl is engaged with the ratchet and the transmission pawl is disengaged from the ratchet. Even if the ratchets are strongly engaged with each other when a running load is applied, the reduction in the meshing force between the ratchet and the transmission pawl will automatically and easily cause the transmission pawl to disengage from the ratchet and switch to the shifted state in which it is laid down. Therefore, when performing a speed change operation with a load acting on the transmission pawl, there is no need to stop the drive each time, and the speed change operation can be performed easily.
図面は本発明の実施例を示すもので、第１図は
三段変速を可能としたものに適用した断面説明
図、第２図及び第４図は要部のみの作動状態を示
す拡大断面図、第３図及び第５図はセーバ部材と
伝動爪との斜視図である。
４……操作体、６，７……伝動爪、６１，７１
……ラチエツト、６２，７２……爪軸、６３，７
３……爪ばね、８，９……セーバ部材。
The drawings show an embodiment of the present invention, and FIG. 1 is an explanatory cross-sectional view of the device applied to a three-speed transmission, and FIGS. 2 and 4 are enlarged cross-sectional views showing the operating state of only the main parts. , 3 and 5 are perspective views of the saver member and the transmission pawl. 4... Operating body, 6, 7... Transmission claw, 61, 71
... Ratchet, 62, 72 ... Claw shaft, 63, 7
3...Claw spring, 8, 9...Saver member.
Claims (1)
軸により伝動爪を起伏自由に支持し、該伝動爪を
爪ばねにより起立方向に付勢して、被駆動部材側
に設けるラチエツトに噛合わせ、伝動するごとく
した前記伝動爪の制御機構であつて、前記ハブ軸
の方向に移動操作する操作体を設けて、該操作体
と前記伝動爪との間に、前記操作体の移動に連動
して動作する操作部と、この操作部の動作で蓄勢
するセーバ部とを備え、前記伝動爪のラチエツト
への噛合いによる伝動時、前記操作体の移動操作
に連動する操作部の動作により前記セーバ部にお
いて蓄勢する力を前記伝動爪に伝え、該伝動爪
に、前記爪ばねの附勢力より大きい倒伏方向の附
勢力を与えるセーバ部材を設けたことを特徴とす
る自転車用変速ハブにおける伝動爪の制御機構。1. A transmission pawl is supported freely up and down by a pawl shaft parallel to the hub axle in a bicycle transmission hub, and the transmission pawl is biased in the upright direction by a pawl spring, meshing with a ratchet provided on the driven member side, and transmitting. The transmission pawl control mechanism is characterized in that an operating body that moves in the direction of the hub shaft is provided between the operating body and the transmission pawl, and operates in conjunction with the movement of the operating body. and a saver section that stores energy by the operation of the operation section, and when the transmission claw engages with the ratchet to transmit power, the saver section is activated by the operation of the operation section in conjunction with the moving operation of the operation body. A transmission pawl in a transmission hub for a bicycle, characterized in that a saver member is provided which transmits the force stored in the transmission pawl to the transmission pawl and applies a biasing force in the direction of collapse that is greater than the biasing force of the pawl spring to the transmission pawl. Control mechanism.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16149783A JPS6053483A (en) | 1983-09-01 | 1983-09-01 | Control mechanism of transmission pawl in variable-speed hubfor bicycle |
| DE19843432124 DE3432124A1 (en) | 1983-09-01 | 1984-08-31 | Control mechanism for transmission latches in a speed changing hub for a bicycle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16149783A JPS6053483A (en) | 1983-09-01 | 1983-09-01 | Control mechanism of transmission pawl in variable-speed hubfor bicycle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6053483A JPS6053483A (en) | 1985-03-27 |
| JPH0347234B2 true JPH0347234B2 (en) | 1991-07-18 |
Family
ID=15736189
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16149783A Granted JPS6053483A (en) | 1983-09-01 | 1983-09-01 | Control mechanism of transmission pawl in variable-speed hubfor bicycle |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JPS6053483A (en) |
| DE (1) | DE3432124A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0773192B2 (en) * | 1986-05-30 | 1995-08-02 | 株式会社日立製作所 | Signal processor |
| DE4229023C2 (en) * | 1992-09-01 | 1995-02-16 | Fichtel & Sachs Ag | Shifting device for multi-speed hub |
| DE10030941A1 (en) * | 2000-06-24 | 2002-01-03 | Sram De Gmbh | Multiple gear shift hub has control cam carrier unit with cam turning round geometric axis at angle to plane normal to axis |
| US6558288B2 (en) * | 2001-05-18 | 2003-05-06 | Shimano, Inc. | Internal transmission device with automatic shift mechanism for a bicycle |
| DE10210201A1 (en) * | 2002-03-07 | 2003-09-18 | Sram De Gmbh | Control of clutches, especially those for drive hubs in bicycles |
| KR100633882B1 (en) * | 2003-08-06 | 2006-10-16 | (주)엠비아이 | A automatic speed changing device |
| JP4788506B2 (en) * | 2006-07-14 | 2011-10-05 | 日本電気株式会社 | amplifier |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52129131A (en) * | 1976-04-21 | 1977-10-29 | Shimano Industrial Co | Internal transmission |
| JPS52129132A (en) * | 1976-04-21 | 1977-10-29 | Shimano Industrial Co | Speed shifting unit for internal transmission |
-
1983
- 1983-09-01 JP JP16149783A patent/JPS6053483A/en active Granted
-
1984
- 1984-08-31 DE DE19843432124 patent/DE3432124A1/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| DE3432124A1 (en) | 1985-04-04 |
| DE3432124C2 (en) | 1987-02-19 |
| JPS6053483A (en) | 1985-03-27 |
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|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |