JPH0714148Y2 - Internal gearbox for bicycle - Google Patents

Internal gearbox for bicycle

Info

Publication number
JPH0714148Y2
JPH0714148Y2 JP1988106241U JP10624188U JPH0714148Y2 JP H0714148 Y2 JPH0714148 Y2 JP H0714148Y2 JP 1988106241 U JP1988106241 U JP 1988106241U JP 10624188 U JP10624188 U JP 10624188U JP H0714148 Y2 JPH0714148 Y2 JP H0714148Y2
Authority
JP
Japan
Prior art keywords
transmission
gear
relay
pawl
operating
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 - Lifetime
Application number
JP1988106241U
Other languages
Japanese (ja)
Other versions
JPH0226996U (en
Inventor
正士 長野
Original Assignee
島野工業株式会社
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 島野工業株式会社 filed Critical 島野工業株式会社
Priority to JP1988106241U priority Critical patent/JPH0714148Y2/en
Publication of JPH0226996U publication Critical patent/JPH0226996U/ja
Application granted granted Critical
Publication of JPH0714148Y2 publication Critical patent/JPH0714148Y2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Retarders (AREA)
  • Transmission Devices (AREA)
  • Structure Of Transmissions (AREA)

Description

【考案の詳細な説明】 (産業上の利用分野) 本考案は自転車用内装変速機、詳しくは、ハブ胴内に変
速機構を内装した自転車用内装変速機に関する。
DETAILED DESCRIPTION OF THE INVENTION (Industrial application field) The present invention relates to an internal bicycle transmission, and more particularly to an internal bicycle transmission having a transmission mechanism inside a hub barrel.

(従来の技術) 一般に、此種変速機は、特公昭54−42493号公報に記載
されている通り、外周面に太陽歯車をもち自転車のフレ
ームに固定する固定軸に、ハブ胴と、駆動チエンと噛合
うチエンギヤ及び駆動歯をもった駆動体とを回転自由に
支持する一方、前記ハブ胴内に、前記太陽歯車に噛合う
遊星歯車及び内面歯をもったギヤ枠と、前記遊星歯車に
噛合う内面歯をもったリングギヤとを内装し、これらギ
ヤ枠とリングギヤとにそれぞれ伝動爪を保持すると共
に、前記駆動体とギヤ枠との間に、前記駆動体の駆動歯
と噛合する第1噛合歯と前記ギヤ枠の内面歯と噛合する
第2噛合歯とをもち、前記駆動体の動力を中継して前記
ギヤ枠に伝達する中継体を前記固定軸の軸方向に移動可
能で、かつ、回転可能に設けると共に、前記固定軸に、
前記中継体を移動操作する操作体を移動のみ自由に支持
して、この操作体の操作により前記中継体を固定軸に沿
って移動させて、前記第1噛合歯の駆動歯との噛合及び
伝動歯の内面歯との噛合を係脱制御することにより、前
記駆動体からの動力を前記ギヤ枠とリングギヤとに選択
的に伝えて高速、中速、低速状態で前記ハブ胴に伝達す
るように構成されている。
(Prior Art) Generally, as described in Japanese Patent Publication No. 54-42493, a transmission of this type has a hub shaft and a drive chain on a fixed shaft having a sun gear on its outer peripheral surface and fixed to a frame of a bicycle. While rotatably supporting a chain gear and a driving body having drive teeth, the gear frame having planet gears and inner teeth meshing with the sun gear and the planet gears are meshed in the hub barrel. A ring gear having matching inner surface teeth is internally provided, and transmission gears are respectively held on the gear frame and the ring gear, and a first meshing engagement between the drive body and the gear frame and the drive teeth of the drive body. A relay body having teeth and second meshing teeth that mesh with the inner surface teeth of the gear frame, which relays the power of the driving body to the gear frame, is movable in the axial direction of the fixed shaft, and While being rotatably provided, the fixed shaft,
An operating body for moving the relay body is freely supported, and the relay body is moved along a fixed shaft by the operation of the operating body to mesh and transmit the first meshing teeth with the drive teeth. By controlling the engagement and disengagement of the teeth with the inner surface teeth, the power from the driving body is selectively transmitted to the gear frame and the ring gear so as to be transmitted to the hub barrel at high speed, medium speed, and low speed. It is configured.

(考案が解決しようとする課題) 所が、従来のものは、前記駆動体に駆動歯を設けると共
に、前記中継体に、前記駆動歯と噛合する噛合歯を設け
て、駆動体の駆動力を、前記駆動歯から噛合歯を介して
中継体に伝達しているため、前記駆動体の動力を、中継
体を介してギヤ枠に伝達する場合、駆動体と中継体との
間の動力伝達部には大きな負荷が作用しているのであ
る。従って、前記操作体を操作し、前記中継体を移動さ
せて変速する場合、非常に大きな操作力を必要とし、変
速操作性が悪い問題があった。
(Problems to be solved by the invention) However, in the conventional one, the driving force of the driving body is increased by providing the driving body with the driving teeth and the relay body with the engaging teeth that mesh with the driving teeth. Since the drive teeth are transmitted to the relay body via the meshing teeth, when the power of the drive body is transmitted to the gear frame via the relay body, a power transmission unit between the drive body and the relay body. There is a heavy load on it. Therefore, when the operating body is operated and the relay body is moved to change gears, a very large operating force is required, and there is a problem in that the shift operability is poor.

本考案は以上の問題点に鑑み考案したものであって、目
的は、駆動体と固定軸に支持する操作体との間に生じる
作動を利用し、この作動により駆動体の動力を中継体に
伝える伝動爪を倒伏制御し、中継体を移動させて変速す
る場合に必要な操作力を小さくし、小さな操作力で容易
に操作できるようにするものである。
The present invention has been made in view of the above problems, and an object thereof is to utilize an operation occurring between a driving body and an operating body supported by a fixed shaft, and by this operation, the power of the driving body is transmitted to a relay body. The transmission pawl to be transmitted is controlled to fall, so that the operation force required when moving the relay body to change the gear is reduced, and the operation can be easily performed with a small operation force.

(課題を解決するための手段) しかして本考案は、太陽歯車(11)をもつ固定軸(1)
と、この固定軸(1)に対し回転自由に支持するハブ胴
(2)と、このハブ胴(2)に内装され、前記太陽歯車
(11)に噛合う遊星歯車(51)をもったギヤ枠(5)
と、前記遊星歯車(51)に噛合う内面歯(61)をもった
リングギヤ(6)と、駆動体(4)とを備えた内装変速
機であって、前記駆動体(4)とギヤ枠(5)との間
に、前記駆動体(4)の動力を中継して前記ギヤ枠
(5)に伝達する中継体(7)と、該中継体(7)を移
動操作する操作体(8)とを前記固定軸(1)の軸方向
に移動可能に設け、前記中継体(7)と駆動体(4)と
の間に伝動爪(9)を起伏可能に設けると共に、前記操
作体(8)に、前記伝動爪(9)と接触して該伝動爪を
倒伏制御する傾斜面をもった制御部(81)と該制御部
(81)の傾斜面と連続し、前記伝動爪(9)の倒伏状態
を維持する円周面をもった維持部(82)とを設けたもの
である。
(Means for Solving the Problems) The present invention, therefore, has a fixed shaft (1) having a sun gear (11).
And a hub barrel (2) that rotatably supports the fixed shaft (1), and a gear that has a planetary gear (51) that is installed in the hub barrel (2) and that meshes with the sun gear (11). Frame (5)
An internal transmission including a ring gear (6) having internal teeth (61) meshing with the planetary gear (51) and a drive body (4), the drive body (4) and a gear frame. A relay body (7) for relaying the power of the driving body (4) to the gear frame (5) between the relay body (5) and an operating body (8) for moving and operating the relay body (7). ) Is provided so as to be movable in the axial direction of the fixed shaft (1), a transmission pawl (9) is provided between the relay body (7) and the driving body (4) so as to be undulating, and the operating body ( 8) The control part (81) having an inclined surface for contacting the transmission pawl (9) to control the transmission pawl to fall and the inclined surface of the control part (81) are connected to each other, and the transmission pawl (9) ) And a retaining portion (82) having a circumferential surface for maintaining the fallen state.

(作用) 回動する駆動体(4)と固定軸(1)に支持した操作体
(8)との間には作動が発生するため、前記操作体
(8)を移動操作すると、駆動体(4)と中継体(7)
との間に起伏可能に設けた伝動爪(9)が、駆動体
(4)と共回いしながら前記操作体(8)の制御部(8
1)に接触して、制御部(81)により倒伏し、駆動体
(4)と中継体(7)との間における負荷が小さくなる
ため、前記中継体(7)を小さな操作力で容易に行うこ
とができるのである。
(Operation) Since an operation occurs between the rotating driving body (4) and the operating body (8) supported on the fixed shaft (1), when the operating body (8) is moved and operated, the driving body (8) is moved. 4) and relay (7)
A transmission claw (9) provided between the control unit (8) and the drive unit (4) so as to be capable of ups and downs is rotated together with the drive unit (4).
Since the load falls between the driving body (4) and the relay body (7) by coming into contact with 1) and falling down by the control unit (81), the relay body (7) can be easily operated with a small operating force. It can be done.

(実施例) 図面に示した内装変速機は、高速、中速、低速の3段変
速を行なえるようにした3段変速用の内装変速機であっ
て、長さ方向中間部外周に太陽歯車(11)をもち自転車
のフレームに固定する固定軸(1)に、両端側内周面に
第1及び第2ラチエット(21)(22)をもった円筒状の
ハブ胴(2)と、駆動チェンと噛合うチェンギヤ(3)
をもった駆動体(4)とを軸受を介して回転自由に支持
する一方、前記ハブ胴(2)内に、前記太陽歯車(11)
に噛合う遊星歯車(51)をもった円筒状のギヤ枠(5)
と、前記遊星歯車(51)に噛合う内面歯(61)をもった
リングギヤ(6)とを内装し、前記駆動体(4)に、該
駆動体(4)の動力を前記リングギヤ(6)に伝える第
1伝動爪(10)を保持し、又、前記リングギヤ(6)
に、前記第1伝動爪(10)と係合する内面歯(62)及び
前記ハブ胴(2)の第1ラチエット(21)と係合し、リ
ングギヤ(6)の回転をハブ胴(2)に伝える第2伝動
爪(20)を保持し、又、前記ギヤ枠(5)に、前記ハブ
胴(2)の第2ラチェット(22)と係合し、ギヤ枠
(5)の回転をハブ胴(2)に伝える第3伝動爪(30)
を保持している。
(Embodiment) The internal transmission shown in the drawings is an internal transmission for a three-speed transmission, which is capable of performing high-speed, medium-speed, and low-speed three-speed transmission, and has a sun gear on the outer periphery of the middle portion in the longitudinal direction. A cylindrical hub body (2) having first and second ratchets (21) and (22) on inner peripheral surfaces of both ends of a fixed shaft (1) having (11) and fixed to a bicycle frame, and a drive shaft. Chain gear that meshes with the chain (3)
And a driving body (4) having a rotor are rotatably supported via bearings, while the sun gear (11) is provided in the hub barrel (2).
Cylindrical gear frame (5) with a planetary gear (51) that meshes with the
And a ring gear (6) having inner surface teeth (61) meshing with the planetary gear (51), and the drive unit (4) receives the power of the drive unit (4) from the ring gear (6). Holds the first transmission pawl (10) for transmission to the ring gear (6)
And the inner surface teeth (62) engaging with the first transmission pawl (10) and the first ratchet (21) of the hub barrel (2) to rotate the ring gear (6) to rotate the hub barrel (2). A second ratchet (22) of the hub barrel (2), which holds the second transmission pawl (20) which transmits the rotation of the gear frame (5) to the hub. 3rd transmission claw (30) which conveys to the torso (2)
Holding

又、前記駆動体(4)は、円筒状に形成して、前記ハブ
胴(2)の一端側に配置し、その軸方向外側外周に前記
チェンギヤ(3)を支持し、このチェンギヤ(3)側の
端部を軸受を介して前記固定軸(1)に回転自由に支持
し、又、軸方向他端側に前記第1伝動爪(10)を起伏可
能に保持し、該第1伝動爪(10)を爪ばねで前記内面歯
(62)方向に付勢している。
Further, the driving body (4) is formed in a cylindrical shape and is arranged at one end side of the hub barrel (2), and the chain gear (3) is supported on the outer circumference in the axial direction thereof. Side end portions are rotatably supported by the fixed shaft (1) via bearings, and the first transmission pawl (10) is undulatingly held at the other end side in the axial direction. (10) is urged by a claw spring toward the inner teeth (62).

又、前記ハブ胴(2)は、その軸方向一端側を、軸受を
介して前記駆動体(4)の外周面に回転自由に支持し、
又、他端側を、軸受を介して前記固定軸(1)に回転自
由に支持している。
Further, the hub barrel (2) has one axial side thereof rotatably supported on the outer peripheral surface of the driving body (4) via a bearing,
The other end is rotatably supported by the fixed shaft (1) via a bearing.

又、前記ギヤ枠(5)は、その一端側を前記固定軸
(1)に回転自由に支持し、この一端側に前記第3伝動
爪(30)を起伏可能に保持し、該第3伝動爪を爪ばねで
前記第2ラチエット(22)方向に付勢し、又、中間部に
前記遊星歯車(51)を枢支軸を介して設けている。
The gear frame (5) has one end side rotatably supported by the fixed shaft (1), and the third transmission pawl (30) is movably held at the one end side so that the third transmission The claw is urged in the direction of the second ratchet (22) by a claw spring, and the planetary gear (51) is provided in the middle part via a pivot shaft.

又、前記リングギヤ(6)は、前記ハブ胴(2)の内径
より僅かに小径で、かつ前記駆動体(4)の軸方向内側
端部位置から前記ギヤ枠(5)の遊星歯車(51)支持部
位に亘って延びる円筒状に形成され、その駆動体(4)
側一端部内周面に、前記内面歯(62)を設け、前記ギヤ
枠(5)側に前記内面歯(61)を設けると共に、中間部
に枢支軸を介して前記第2伝動爪(20)を起伏可能に保
持し、該第2伝動爪を爪ばねで前記第1ラチェット(2
1)方向に付勢している。
The ring gear (6) has a diameter slightly smaller than the inner diameter of the hub barrel (2), and the planetary gear (51) of the gear frame (5) from the axially inner end position of the driving body (4). A driving body (4) formed in a cylindrical shape extending over the supporting portion.
The inner surface tooth (62) is provided on the inner peripheral surface of the side end portion, the inner surface tooth (61) is provided on the gear frame (5) side, and the second transmission pawl (20) is provided at an intermediate portion via a pivot shaft. ) Is held so that it can be undulated, and the second transmission pawl is held by the pawl spring with the first ratchet (2
1) It is biased in the direction.

しかして第1〜第7図に示した実施例では、前記固定軸
(1)周りにおける前記駆動体(4)とギヤ枠(5)と
の間に、前記駆動体(4)の動力を中継して前記ギヤ枠
(5)に伝達し、従動歯(71)をもった中継体(7)
と、該中継体(7)を移動操作する操作体(8)とを前
記固定軸(1)の軸方向に移動可能に設け、前記中継体
(7)と駆動体(4)との間に前記従動歯(71)と係合
する伝動爪(9)を起伏可能に設けて、該伝動爪(9)
を爪ばね(91)で前記従動歯(71)方向に付勢すると共
に、前記操作体(8)に、前記伝動爪(9)と接触して
該伝動爪(9)を倒伏制御する傾斜面を持った制御部
(81)と該制御部(81)の傾斜面と連続し、前記伝動爪
(9)の倒伏状態を維持する円周面をもった維持部(8
2)とを設けたのである。
Therefore, in the embodiment shown in FIGS. 1 to 7, the power of the driving body (4) is relayed between the driving body (4) and the gear frame (5) around the fixed shaft (1). And transmitted to the gear frame (5) and having the driven teeth (71).
And an operating body (8) for moving the relay body (7) so as to be movable in the axial direction of the fixed shaft (1), and between the relay body (7) and the driving body (4). A transmission pawl (9) that engages with the driven tooth (71) is provided so as to be capable of undulating, and the transmission pawl (9) is provided.
An inclined surface for urging the driven pawl spring (91) toward the driven tooth (71) and contacting the operating body (8) with the transmission pawl (9) to control the transmission pawl (9) to fall. And a maintenance part (8) having a circumferential surface which is continuous with the inclined part of the control part (81) and which maintains the fall state of the transmission pawl (9).
2) and are provided.

以上の構成において、前記中継体(7)は、前記固定軸
(1)の外周に回転自由に支持する貫通孔をもった円筒
状に形成して、その一端部外周面に前記従動歯(71)を
周設するのである。又、中継体(7)他端部外周面に
は、伝動歯(72)を設け、この伝動歯(72)と噛合する
噛合歯(52)を前記ギヤ枠(5)の駆動体側端部内周面
に設けるのである。又、この中継体(7)と前記固定軸
(1)に固定したばね受け(12)との間には、前記中継
体(7)を前記駆動軸(4)方向に付勢する第1ばね
(31)を介装し、又、中継体(7)と前記操作体(8)
との間には、前記操作体(8)を復帰方向に付勢する第
2ばね(32)を介装している。
In the above structure, the relay body (7) is formed into a cylindrical shape having a through hole for rotatably supporting the outer periphery of the fixed shaft (1), and the driven tooth (71) is formed on the outer peripheral surface at one end thereof. ) Around. Further, transmission teeth (72) are provided on the outer peripheral surface of the other end of the relay body (7), and meshing teeth (52) meshing with the transmission teeth (72) are provided on the inner periphery of the end portion of the gear frame (5) on the drive body side. It is provided on the surface. A first spring that urges the relay body (7) in the direction of the drive shaft (4) between the relay body (7) and the spring bearing (12) fixed to the fixed shaft (1). (31) is interposed, and the relay body (7) and the operating body (8)
A second spring (32) for urging the operating body (8) in the return direction is interposed between the and.

又、前記操作体(8)は、円筒状に形成して、その一端
側外周部に、前記制御部(81)を設け、他端側外周部に
前記維持部(82)を設けるのである。前記制御部(81)
は、前記伝動爪(9)の起立時における先端縁位置より
も半径方向内方位置から外方に向って前記維持部(82)
側に傾斜し周方向に湾曲する円弧状に形成して、この制
御部(81)の周方向端縁を前記維持部(82)と同径の案
内部(82)とし、操作体(8)を操作したとき、前記伝
動爪(9)の先端縁を前記制御部(81)と当接させ、駆
動体(4)と共回いする伝動爪(9)と操作体(8)と
の間の作動を利用して前記制御部(81)により伝動爪
(9)を倒伏方向に押圧して倒伏させ、この倒伏した伝
動爪(9)の先端部を前記案内部(83)から維持部(8
2)に案内して、この維持部(82)により前記伝動爪
(9)の倒伏状態を維持するのである。尚、前記制御部
(81)は、第4図に示した如く対向状に2個設けるので
あるが、1個又は3個以上設けてもよいのである。又、
前記維持部(82)は、操作体(8)の外周面と同径に形
成するのであるが、その径を異ならせてもよい。
Further, the operating body (8) is formed in a cylindrical shape, and the control portion (81) is provided on the outer peripheral portion on one end side, and the maintaining portion (82) is provided on the outer peripheral portion on the other end side. The control unit (81)
Is from the radially inner position to the outer side than the tip edge position when the transmission pawl (9) is erected from the holding portion (82).
The control section (81) is formed in an arc shape inclined to the side and curved in the circumferential direction, and the circumferential end edge of the control section (81) is used as a guide section (82) having the same diameter as the maintenance section (82), and the operating body (8) Between the transmission claw (9) and the operating body (8) that rotate together with the driving body (4) by bringing the tip edge of the transmission claw (9) into contact with the control section (81) when operating. The control portion (81) presses the transmission pawl (9) in the fall direction to make it fall, and the tip of the fallen transmission pawl (9) is moved from the guide portion (83) to the maintenance portion ( 8
The maintenance portion (82) guides the user to step 2) to maintain the transmission claw (9) in the lying state. The two control parts (81) are provided so as to face each other as shown in FIG. 4, but one or three or more may be provided. or,
The retaining portion (82) is formed to have the same diameter as the outer peripheral surface of the operating body (8), but the diameter may be different.

又、前記操作体(8)は、前記固定軸(1)の中心部に
軸方向移動自由に設ける操作ロッド(33)及び該ロッド
(33)と前記操作体(8)との間に介装する変速キー
(34)を介して移動操作するのであって、前記固定軸
(1)の中間部に、半径方向に貫通するガイド孔(13)
を設けると共に、固定軸(1)の中心部に、前記ガイド
孔(13)から一端縁に亘って貫通する軸孔(14)を設け
て、この軸孔(14)に前記ロッド(33)を挿通し、又、
前記ガイド孔(13)に前記キー(34)を挿入して、この
キー(34)を前記操作体(8)の端面に当接させ、該操
作体(8)の回転を前記キー(34)により阻止してい
る。
The operating body (8) is provided between the operating body (8) and an operating rod (33) which is provided at the center of the fixed shaft (1) so as to be freely movable in the axial direction. The shift key (34) is operated to move, and a guide hole (13) penetrating in a radial direction is formed in an intermediate portion of the fixed shaft (1).
And a shaft hole (14) penetrating from the guide hole (13) to one end edge of the fixed shaft (1), and the rod (33) is provided in the shaft hole (14). Insert, again
The key (34) is inserted into the guide hole (13), and the key (34) is brought into contact with the end surface of the operating body (8) to rotate the operating body (8) by the key (34). Is blocked by.

又、前記中継体(7)の中間部には、前記第2伝動爪
(20)の基端側端部と接触して該第2伝動爪(20)を倒
伏制御する傾斜面をもった制御部(73)と該制御部(7
3)の傾斜面と連続し、前記第2伝動爪(20)の倒伏状
態を維持する円周面をもった維持部(74)とを設けてい
る。前記制御部(73)は中継体(7)の従動歯(71)と
伝動歯(72)との間に環状段部を設けて、この環状段部
に形成するのであり、又、維持部(74)は、前記従動歯
(71)の前記段部側端部外周を利用し、この従動歯外周
面を維持部(74)とするのである。又、前記制御部(7
3)は、前記第2伝動爪(20)の起立時における基端縁
位置よりも半径方向内方位置から外方に向って前記維持
部(74)側に傾斜し周方向に湾曲する円弧状に形成し
て、この制御部(73)の周方向端縁を前記維持部(74)
と同径の案内部(75)とし、中継体(7)がギヤ枠
(5)方向に移動したとき、前記第2伝動爪(20)の基
端側端縁を前記制御部(73)と当接させ、リングギヤ
(6)と共回いする第2伝動爪(20)と中継体(7)と
の間の作動を利用して前記制御部(73)により第2伝動
爪(20)を倒伏方向に押圧して倒伏させ、この倒伏した
第2伝動爪(20)との基端側端部を前記案内部(75)か
ら維持部(74)に案内して、この維持部(74)により前
記第2伝動爪(20)の倒伏状態を維持するのである。
尚、前記制御部(73)は、第6図に示した如く対向状に
2個設けるのであるが、1個又は3個以上設けてもよい
のである。又、前記維持部(74)は、従動歯(71)の外
径と同径に形成するのであるが、その径を異ならせても
よい。
Further, the intermediate body of the relay body (7) is provided with an inclined surface for controlling the second transmission pawl (20) to fall down by coming into contact with the proximal end portion of the second transmission pawl (20). Section (73) and the control section (7
A retaining portion (74) is provided that is continuous with the inclined surface of 3) and has a circumferential surface that maintains the fall state of the second transmission pawl (20). The control section (73) forms an annular stepped portion between the driven tooth (71) and the transmission tooth (72) of the relay body (7) and forms the annular stepped portion. 74) utilizes the outer periphery of the stepped portion side end of the driven tooth (71), and uses the outer peripheral surface of the driven tooth as the retaining portion (74). In addition, the control unit (7
3) is an arcuate shape that inclines toward the maintenance portion (74) side from the radially inner position to the outer side than the base end edge position when the second transmission pawl (20) is erected and curves in the circumferential direction. And the circumferential edge of the control part (73) is formed on the maintaining part (74).
When the relay body (7) is moved in the gear frame (5) direction, the base end side edge of the second transmission pawl (20) serves as the control portion (73). Utilizing the operation between the relay body (7) and the second transmission pawl (20) that abuts and rotates together with the ring gear (6), the control unit (73) causes the second transmission pawl (20) to move. It is pushed down in the laying direction to lay it down, and the end portion of the laid-down second transmission claw (20) on the base end side is guided from the guide portion (75) to the maintenance portion (74), and the maintenance portion (74). Thus, the fall state of the second transmission pawl (20) is maintained.
The two control parts (73) are provided so as to face each other as shown in FIG. 6, but one or three or more may be provided. Further, the retaining portion (74) is formed to have the same diameter as the outer diameter of the driven tooth (71), but the diameter may be different.

本考案は以上の如く構成するもので、第1図に示した状
態は、第1伝動爪(10)が内面歯(62)と、又、第2伝
動爪(20)が第1ラチェット(21)と、又、第3伝動爪
(30)が第2ラチェット(22)とそれぞれ係合すると共
に、駆動体(4)の伝動爪(9)が中継体(7)の従動
歯(71)と係合し、又、中継体(7)の伝動歯(72)が
ギヤ枠(5)の内面歯(52)と噛合している高速体制で
あって、この高速体制で駆動体(4)に動力が伝達され
ると、この動力が、伝動爪(9)、中継体(7)、ギヤ
枠(5)、遊星歯車(51)、リングギヤ(6)及び第2
伝動爪(20)を介してハブ胴(2)に伝達され、該ハブ
胴(2)が前記駆動体(4)に対し高速駆動するのであ
る。
The present invention is configured as described above. In the state shown in FIG. 1, the first transmission pawl (10) has the inner teeth (62) and the second transmission pawl (20) has the first ratchet (21). ), And the third transmission pawl (30) engages with the second ratchet (22), respectively, and the transmission pawl (9) of the driving body (4) forms the driven teeth (71) of the relay body (7). It is a high speed system in which the transmission teeth (72) of the relay body (7) are engaged with the inner surface teeth (52) of the gear frame (5), and the drive body (4) is engaged with the high speed system. When the power is transmitted, the power is transmitted to the transmission pawl (9), the relay body (7), the gear frame (5), the planet gear (51), the ring gear (6) and the second gear.
It is transmitted to the hub barrel (2) via the transmission claw (20), and the hub barrel (2) drives at high speed with respect to the driving body (4).

又、この高速体制から中継体制又は低速体制に変速する
場合は、前記操作ロッド(33)を前記第2ばね(32)に
抗して押操作するのであって、この操作ロッド(33)の
押操作により、変速キー(34)を介して操作体(8)が
第2ばね(32)に抗して移動し、該操作体(8)の制御
部(81)が起立状態の伝動爪(9)における先端部と当
接する。すると駆動体(4)と共回いしている伝動爪
(9)と、回転しない操作体(8)との間の作動によ
り、前記伝動爪(9)が前記制御部(81)に沿って倒伏
方向に強制的に押圧されるのである。従って、前記操作
体(8)を小さな力で移動させることができ、この操作
体の移動に伴い前記伝動爪(9)が制御部(81)により
完全に倒伏し、伝動爪(9)から中継体(7)への動力
伝達が遮断されて、駆動体(4)と中継体(7)との間
における負荷が小さくなり、前記倒伏した伝動爪(9)
は、操作体(8)の維持部(82)と接触し、この維持部
(82)により倒伏状態が維持されるのである。斯くて、
高速体制から中速体制への変速操作を、小さな操作力で
容易に行うことができるのである。
Further, when shifting from the high speed system to the relay system or the low speed system, the operation rod (33) is pushed against the second spring (32) and the operation rod (33) is pushed. By operation, the operating body (8) moves via the speed change key (34) against the second spring (32), and the control section (81) of the operating body (8) stands up to the transmission pawl (9). A) contact with the tip. Then, the transmission claw (9) falls down along the control section (81) due to the operation between the transmission claw (9) that rotates together with the driving body (4) and the operating body (8) that does not rotate. It is forcibly pressed in the direction. Therefore, the operating body (8) can be moved with a small force, and with the movement of the operating body, the transmission pawl (9) is completely laid down by the control unit (81) and relayed from the transmission pawl (9). The power transmission to the body (7) is cut off, the load between the driving body (4) and the relay body (7) is reduced, and the laid transmission pawl (9) is reduced.
Is in contact with the maintenance portion (82) of the operating body (8), and the maintenance portion (82) maintains the lying state. Thus,
The shift operation from the high speed system to the medium speed system can be easily performed with a small operation force.

そして前記伝動爪(9)の倒伏により、前記駆動体
(4)の動力は、第1伝動爪(10)、リングギヤ(6)
及び第2伝動爪(20)からハブ胴(2)に伝達され、該
ハブ胴(2)は前記駆動体(4)と直結状態で中速駆動
するのである。
Then, due to the fall of the transmission pawl (9), the power of the driving body (4) is supplied to the first transmission pawl (10) and the ring gear (6).
And transmitted from the second transmission pawl (20) to the hub barrel (2), and the hub barrel (2) is driven at a medium speed in a directly connected state with the driving body (4).

又、中速体制から低速体制に変速する場合、前記ロッド
(32)を更に押操作すると、第2ばね(32)に抗して中
継体(7)がギヤ枠(5)側に移動して、該中継体
(7)の制御部(73)が起立状態の第2伝動爪(20)に
おける基端側端部と当接する。するとリングギヤ(6)
と共回いしている第2伝動爪(20)と、中継体(7)と
の間の作動により、前記第2伝動爪(20)が前記制御部
(73)に沿って倒伏方向に強制的に押圧されるのであ
る。従って、前記操作体(8)を小さな力で移動させる
ことができ、この操作体の移動に伴い前記第2伝動爪
(20)が制御部(73)により完全に倒伏し、第2伝動爪
(20)からハブ胴(2)への動力伝達が遮断されて、前
記倒伏した第2伝動爪(20)は、中継体(7)の維持部
(74)と接触し、この維持部(74)により倒伏状態が維
持されるのである。斯くて、中速体制から低速体制への
変速操作を、小さな操作力で容易に行うことができるの
である。
When shifting from the medium speed system to the low speed system, when the rod (32) is further pushed, the relay body (7) moves to the gear frame (5) side against the second spring (32). The control portion (73) of the relay body (7) comes into contact with the proximal end portion of the second transmission pawl (20) in the upright state. Then ring gear (6)
Due to the operation between the second transmission pawl (20) that rotates together with the relay body (7), the second transmission pawl (20) is forced in the fall direction along the control unit (73). Is pressed by. Therefore, the operating body (8) can be moved with a small force, and with the movement of the operating body, the second transmission pawl (20) is completely laid down by the control unit (73), and the second transmission pawl ( The power transmission from the hub barrel (2) to the hub barrel (2) is cut off, and the fallen second transmission pawl (20) comes into contact with the maintenance portion (74) of the relay body (7), and this maintenance portion (74). Therefore, the lodging state is maintained. Thus, the shift operation from the medium speed system to the low speed system can be easily performed with a small operating force.

そして、前記駆動体(4)の動力は、第1伝動爪(1
0)、リングギヤ(6)、遊星歯車(51)、ギヤ枠
(5)及び第3伝動爪(30)からハブ胴(2)に伝達さ
れ、該ハブ胴(2)が前記駆動体(4)に対し低速駆動
するのである。
The power of the driving body (4) is generated by the first transmission pawl (1
0), the ring gear (6), the planetary gear (51), the gear frame (5) and the third transmission pawl (30) are transmitted to the hub barrel (2), and the hub barrel (2) is transferred to the driving body (4). However, it is driven at a low speed.

以上の如く操作体(8)に制御部(81)と維持部(82)
とを設け、中継体(7)に制御部(73)と維持部(74)
とを設けることにより、高速体制から低速体制側への変
速操作を小さな力で容易に行うことができるのである。
As described above, the operation unit (8) has a control unit (81) and a maintenance unit (82).
Is provided, and the relay unit (7) has a control unit (73) and a maintenance unit (74).
By providing the and, it is possible to easily perform the shift operation from the high speed system to the low speed system side with a small force.

又、以上の如く低速体制に変速した状態から、逆に中速
又は高速体制に変速する場合は、前記操作ロッド(33)
を第1図において前記駆動体(4)方向に引戻し操作
し、第1ばね(31)の復元力で、前記中継体(7)を駆
動体(4)方向に移動させるのであって、この中継体
(7)の移動により、第2伝動爪(20)の維持部(74)
との接触が外れて中継体(7)による倒伏制御が解除さ
れ、この第2伝動爪(20)が爪ばねの力により起立し
て、第1ラチエット(21)と係合し、中速体制となるの
である。又、前記ロッド(33)を更に引戻し操作すると
第1ばね(31)の復元力で前記中継体(7)が更に駆動
体(4)方向に移動し、又、第2ばね(32)の復元力で
操作体(8)が復動して、伝動爪(9)の前記操作体
(8)による倒伏制御が解除され、この伝動爪(9)が
爪ばね(91)の力により起立して、中継体(7)の従動
歯(71)と係合し、低速体制となるのである。
Further, when shifting from the low speed system to the medium speed or high speed system as described above, the operating rod (33)
In FIG. 1, the relay body (7) is pulled back in the direction of the drive body (4) and the restoring force of the first spring (31) moves the relay body (7) in the direction of the drive body (4). By the movement of the body (7), the retaining portion (74) of the second transmission pawl (20)
The contact control with the relay body (7) is released and the fall control by the relay body (7) is released, and the second transmission pawl (20) stands up by the force of the pawl spring and engages with the first ratchet (21), and the medium speed system It becomes. Further, when the rod (33) is further pulled back, the restoring force of the first spring (31) causes the relay body (7) to further move toward the driving body (4), and also restores the second spring (32). The operating body (8) returns by the force, the fall control of the transmission pawl (9) by the operating body (8) is released, and the transmission pawl (9) stands up by the force of the pawl spring (91). , And engages with the driven teeth (71) of the relay body (7) to establish a low speed system.

尚、以上説明した実施例では、駆動体(4)に伝動爪
(9)を保持したが、その他、この伝動爪(9)は、中
継体(7)に保持してもよい。この場合、前記駆動体
(4)には、前記伝動爪(9)と係合する駆動歯を設け
るのである。
In the embodiment described above, the transmission claw (9) is held on the driving body (4), but the transmission claw (9) may be held on the relay body (7). In this case, the drive body (4) is provided with drive teeth that engage with the transmission pawl (9).

又、以上の実施例では、操作体(8)と、中継体(7)
とに制御部と維持部とを設けたが、前記中継体(7)の
制御部(73)及び維持部(74)は、必ずしも設ける必要
はない。
Further, in the above embodiments, the operating body (8) and the relay body (7)
Although the control section and the maintenance section are provided in and, the control section (73) and the maintenance section (74) of the relay body (7) do not necessarily have to be provided.

又、中継体(7)とギヤ枠(5)との間の動力伝達部
は、伝動歯(72)と内面歯(52)とである他、噛合クラ
ッチであってもよい。
Further, the power transmission portion between the relay body (7) and the gear frame (5) is not limited to the transmission teeth (72) and the inner surface teeth (52), but may be a mesh clutch.

(考案の効果) 以上の如く本考案は、駆動体(4)とギヤ枠(5)との
間に、前記駆動体(4)の動力を中継して前記ギヤ枠
(5)に伝達する中継体(7)と、該中継体(7)を移
動操作する操作体(8)とを前記固定軸(1)の軸方向
に移動可能に設け、前記中継体(7)と駆動体(う)と
の間に伝動爪(9)を起伏可能に設けると共に、前記操
作体(9)に、前記伝動爪(9)と接触して該伝動爪を
倒伏制御する傾斜面をもった制御部(81)と該制御部
(81)の傾斜面と連続し、前記伝動爪(9)の倒伏状態
を維持する円周面をもった維持部(9)とを設けたので
あるから、前記操作体(8)を移動させて該操作体
(8)の制御部(81)を前記伝動爪(9)に当接させる
ことにより、駆動体(4)と共回いする前記伝動爪
(9)と操作体(8)との間の作動を利用して前記伝動
爪(9)を強制的に倒伏させて変速することができるの
であり、前記操作体(8)を小さな力で移動させること
ができるのである。従って、この操作体(8)による変
速操作を小さな操作力で容易に行うことができるのであ
る。
(Effect of the Invention) As described above, the present invention is a relay for relaying the power of the drive body (4) between the drive body (4) and the gear frame (5) and transmitting the power to the gear frame (5). A body (7) and an operating body (8) for moving and operating the relay body (7) are provided so as to be movable in the axial direction of the fixed shaft (1), and the relay body (7) and the driving body (U). A transmission claw (9) is provided so as to be capable of undulating, and a controller (81) having an inclined surface on the operating body (9) for contacting the transmission claw (9) to control the transmission claw to fall. ) And a maintenance portion (9) having a circumferential surface which is continuous with the inclined surface of the control portion (81) and maintains the lying state of the transmission pawl (9). (8) is moved to bring the control part (81) of the operating body (8) into contact with the transmission pawl (9), thereby operating the transmission pawl (9) co-rotating with the driving body (4). body( It is possible to force the transmission pawl (9) to fall down and shift gears by utilizing the operation between the operation body (8) and the transmission pawl (9), and to move the operating body (8) with a small force. Therefore, it is possible to easily perform the shifting operation by the operating body (8) with a small operating force.

【図面の簡単な説明】 第1図は本考案装置の一実施例を示す一部切欠正面図、
第2図は第1図II−II線断面図、第3図は第1図III−I
II線断面図、第4図は操作体のみの側面図、第5図はそ
の一部切欠正面図、第6図は中継体のみの縦断側面図、
第7図はその一部切欠正面図である。 (1)……固定軸 (11)……太陽歯車 (2)……ハブ胴 (4)……駆動体 (41)……内面歯 (5)……ギヤ枠 (51)……遊星歯車 (6)……リングギヤ (7)……中継体 (8)……操作体 (81)……制御部 (82)……維持部 (9)……伝動爪
BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a partially cutaway front view showing an embodiment of the device of the present invention,
2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is III-I in FIG.
II line sectional view, FIG. 4 is a side view of only the operating body, FIG. 5 is a partially cutaway front view thereof, and FIG. 6 is a vertical sectional side view of only the relay body,
FIG. 7 is a partially cutaway front view thereof. (1) ...... Fixed shaft (11) ...... Sun gear (2) ...... Hub body (4) ...... Drive body (41) ...... Internal teeth (5) ...... Gear frame (51) ...... Planetary gear ( 6) ...... Ring gear (7) ...... Relay body (8) ...... Operating body (81) ...... Control section (82) ...... Maintenance section (9) ...... Transmission pawl

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 【請求項1】太陽歯車(11)をもつ固定軸(1)と、こ
の固定軸(1)に対し回転自由に支持するハブ胴(2)
と、このハブ胴(2)に内装され、前記太陽歯車(11)
に噛合う遊星歯車(51)をもったギヤ枠(5)と、前記
遊星歯車(51)に噛合う内面歯(61)をもったリングギ
ヤ(6)と、駆動体(4)とを備えた内装変速機であっ
て、前記駆動体(4)とギヤ枠(5)との間に、前記駆
動体(4)の動力を中継して前記ギヤ枠(5)に伝達す
る中継体(7)と、該中継体(7)を移動操作する操作
体(8)とを前記固定軸(1)の軸方向に移動可能に設
け、前記中継体(7)と駆動体(4)との間に伝動爪
(9)を起伏可能に設けると共に、前記操作体(8)
に、前記伝動爪(9)と接触して該伝動爪を倒伏制御す
る傾斜面をもった制御部(81)と該制御部(81)の傾斜
面と連続し、前記伝動爪(9)の倒伏状態を維持する円
周面をもった維持部(82)とを設けたことを特徴とする
自転車用内装変速機。
1. A fixed shaft (1) having a sun gear (11) and a hub barrel (2) rotatably supporting the fixed shaft (1).
And the sun gear (11) installed inside the hub barrel (2)
A gear frame (5) having a planetary gear (51) meshing with the ring gear, a ring gear (6) having internal teeth (61) meshing with the planetary gear (51), and a driving body (4). An internal transmission, a relay body (7) for relaying power of the drive body (4) between the drive body (4) and the gear frame (5) and transmitting the power to the gear frame (5). And an operating body (8) for moving the relay body (7) so as to be movable in the axial direction of the fixed shaft (1), and between the relay body (7) and the driving body (4). A transmission pawl (9) is provided so as to be capable of undulating, and the operating body (8)
In addition, the control part (81) having an inclined surface for contacting the transmission claw (9) to control the transmission claw to fall and the sloped surface of the control part (81) are connected to each other, and the transmission claw (9) An internal transmission for a bicycle, comprising: a retaining portion (82) having a circumferential surface for maintaining a laid state.
JP1988106241U 1988-08-10 1988-08-10 Internal gearbox for bicycle Expired - Lifetime JPH0714148Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1988106241U JPH0714148Y2 (en) 1988-08-10 1988-08-10 Internal gearbox for bicycle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1988106241U JPH0714148Y2 (en) 1988-08-10 1988-08-10 Internal gearbox for bicycle

Publications (2)

Publication Number Publication Date
JPH0226996U JPH0226996U (en) 1990-02-21
JPH0714148Y2 true JPH0714148Y2 (en) 1995-04-05

Family

ID=31339571

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1988106241U Expired - Lifetime JPH0714148Y2 (en) 1988-08-10 1988-08-10 Internal gearbox for bicycle

Country Status (1)

Country Link
JP (1) JPH0714148Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101286204B1 (en) * 2013-02-06 2013-07-15 (주)엠비아이 Multi speed transmission

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60116581A (en) * 1983-11-29 1985-06-24 株式会社シマノ Variable speed hub for bicycle

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101286204B1 (en) * 2013-02-06 2013-07-15 (주)엠비아이 Multi speed transmission
WO2014123312A1 (en) * 2013-02-06 2014-08-14 (주)엠비아이 Variable transmission having internal hub
TWI566982B (en) * 2013-02-06 2017-01-21 Mbi股份有限公司 Hub-embedded multi-stage transmission
US9676448B2 (en) 2013-02-06 2017-06-13 Mbi Co., Ltd. Hub-embedded multi-stage transmission

Also Published As

Publication number Publication date
JPH0226996U (en) 1990-02-21

Similar Documents

Publication Publication Date Title
US4215594A (en) Torque responsive speed shift mechanism for power tool
TWI400177B (en) Bicycle forced transmission
JP3184230B2 (en) Interior transmission
JP3604136B2 (en) Bicycle interior transmission
JP4633719B2 (en) Automatic transmission
SE450944B (en) RANGEVEXELLADA FOR MOTOR VEHICLES
JPS627419B2 (en)
EP2586694A1 (en) Electrically assisted bicycle
JPH0344037B2 (en)
JPH0714148Y2 (en) Internal gearbox for bicycle
US4433957A (en) Transmission gear for a dental handpiece
KR100258785B1 (en) Power changing apparatus of bicycle hub
JP2968204B2 (en) Interior hub with reverse braking device
AU728482B2 (en) Winch
JPH10110791A (en) Two-stage shifting reduction gear
JPH08200397A (en) Synchronizer for vehicle transmission
JPH068360Y2 (en) Forward / reverse switching device
JPH0140795Y2 (en)
JP3107317B2 (en) Bicycle transmission
JP3463363B2 (en) Switching mechanism of auxiliary transmission
JPS589859B2 (en) transmission
JPH0743534Y2 (en) Gear change device
KR100944972B1 (en) A brake of apparatus for changing speed
JPH0630325Y2 (en) Transmission for machine tool with built-in motor
JP2678987B2 (en) Power transmission device including speed change mechanism of self-propelled working machine