JPH0539865A - Shift drum driving mechanism for transmission - Google Patents
Shift drum driving mechanism for transmissionInfo
- Publication number
- JPH0539865A JPH0539865A JP19422991A JP19422991A JPH0539865A JP H0539865 A JPH0539865 A JP H0539865A JP 19422991 A JP19422991 A JP 19422991A JP 19422991 A JP19422991 A JP 19422991A JP H0539865 A JPH0539865 A JP H0539865A
- Authority
- JP
- Japan
- Prior art keywords
- shift drum
- drive
- shift
- shaft
- drum shaft
- 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.)
- Granted
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H63/00—Control outputs from the control unit to change-speed- or reversing-gearings for conveying rotary motion or to other devices than the final output mechanism
- F16H63/02—Final output mechanisms therefor; Actuating means for the final output mechanisms
- F16H63/08—Multiple final output mechanisms being moved by a single common final actuating mechanism
- F16H63/16—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism
- F16H63/18—Multiple final output mechanisms being moved by a single common final actuating mechanism the final output mechanisms being successively actuated by progressive movement of the final actuating mechanism the final actuating mechanism comprising cams
Landscapes
- Gear-Shifting Mechanisms (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は車両用変速装置のシフト
ドラム駆動機構に関し、更には、変速指令信号に基づい
て作動する油圧あるいは電動モータの駆動力でシフトチ
ェンジを行うシフトドラム駆動機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shift drum drive mechanism for a vehicle transmission, and more particularly to a shift drum drive mechanism for performing a shift change by hydraulic pressure or an electric motor drive force that operates based on a shift command signal.
【０００２】[0002]
【従来の技術】自動二輪車等において一般的に用いられ
ている変速装置では、足踏み式のシフトペダルの動きを
ラチェット機構を介してシフトドラムに伝達し、間歇回
転するシフトドラムにカム係合する複数のシフトフォー
クを選択的に作動させてシフトチェンジを行わせてい
る。2. Description of the Related Art In a transmission generally used in a motorcycle or the like, a plurality of foot shift type shift pedals are transmitted to a shift drum via a ratchet mechanism, and a plurality of cams are engaged with the intermittently rotating shift drum. The shift fork is selectively operated to perform a shift change.
【０００３】また、シフトペダルを用いない電動式変速
装置として、シフトスイッチから出力される変速指令信
号に基づいて作動するモータでシフトドラムを回転させ
るものが知られている（例えば、実開昭６１−８１０４
３号公報参照）。Further, as an electric transmission that does not use a shift pedal, there is known an electric transmission that rotates a shift drum with a motor that operates based on a shift command signal output from a shift switch (for example, actual development 61). -8104
See Japanese Patent Publication No. 3).
【０００４】[0004]
【発明が解決しようとする課題】ところで、足踏み式の
シフトペダルによるシフトドラム駆動機構であれば、変
速装置のギヤやカムがスムーズに係合しない場合であっ
てもシフト操作を繰り返すことにより最終的にシフトチ
ェンジを完了させることができるが、上記電動式変速装
置にあってはシフトチェンジの係合動作を適切にコント
ロールするために複雑な制御を必要とする。By the way, in the case of a shift drum drive mechanism using a foot-operated shift pedal, even if the gears and cams of the transmission are not smoothly engaged, the shift operation is repeated until the final operation is completed. Although the shift change can be completed, the electric transmission described above requires complicated control in order to appropriately control the engagement operation of the shift change.
【０００５】本発明は前述の事情に鑑みてなされたもの
で、入力手段によりシフトドラムを回転させるシフトド
ラム駆動機構においてスムーズなシフトチェンジを可能
にするとともに、前記入力手段の過負荷を防止すること
を第１の目的とする。更に、電動モータの回転軸の回転
角に余裕を持たせた状態で該電気モータの駆動力を間歇
回転機構を介してシフトドラムに伝達することにより、
前記電動モータの回転制御を簡素化することを第２の目
的とする。The present invention has been made in view of the above circumstances, and enables smooth shift change in a shift drum drive mechanism for rotating a shift drum by input means and prevents overload of the input means. Is the first purpose. Further, by transmitting the driving force of the electric motor to the shift drum via the intermittent rotation mechanism in a state where the rotation angle of the rotation shaft of the electric motor has a margin,
A second object is to simplify the rotation control of the electric motor.
【０００６】[0006]
【課題を解決するための手段】前記目的を達成するため
に、本発明は、入力手段の駆動力を間歇回転機構を介し
てシフトドラム軸に伝達する変速装置のシフトドラム駆
動機構であって、間歇回転機構とシフトドラム軸間に、
間歇回転機構の駆動力を弾発部材を介してシフトドラム
軸に伝達するロストモーション機構を介在させたことを
第１の特徴とする。To achieve the above object, the present invention relates to a shift drum drive mechanism for a transmission, which transmits the drive force of an input means to a shift drum shaft via an intermittent rotation mechanism, Between the intermittent rotation mechanism and the shift drum shaft,
The first feature is that a lost motion mechanism for transmitting the driving force of the intermittent rotation mechanism to the shift drum shaft via the elastic member is interposed.
【０００７】また本発明は、変速指令信号に基づいて作
動する電動モータの駆動力を間歇回転機構を介してシフ
トドラム軸に伝達する変速装置のシフトドラム駆動機構
であって、間歇回転機構が電動モータに作動的に連結し
た駆動軸に設けた駆動ロータとシフトドラム軸に設けた
従動ロータから構成され、駆動ロータは駆動軸から偏心
したピンと、そのピンの反対側に形成された円弧状の位
置決め凸部を備えるとともに、従動ロータは等間隔で半
径方向に延びて前記ピンが係合する溝と、その溝の間に
等間隔に形成されて前記位置決め凸部が係合する円弧状
の位置決め凹部を備えることを第２の特徴とする。Further, the present invention is a shift drum drive mechanism of a transmission for transmitting a driving force of an electric motor which operates based on a shift command signal to a shift drum shaft via an intermittent rotation mechanism, wherein the intermittent rotation mechanism is an electric drive mechanism. It consists of a drive rotor provided on a drive shaft operatively connected to a motor and a driven rotor provided on a shift drum shaft.The drive rotor is a pin eccentric from the drive shaft and an arc-shaped positioning formed on the opposite side of the pin. The driven rotor is provided with protrusions, and the driven rotor extends in the radial direction at regular intervals to engage the pins, and arc-shaped positioning recesses formed at equal intervals between the grooves to engage the positioning protrusions. The second feature is to include.
【０００８】[0008]
【実施例】以下、図面に基づいて本発明の実施例を説明
する。Embodiments of the present invention will be described below with reference to the drawings.
【０００９】図１〜図７は本発明の一実施例を示すもの
で、図１は自動三輪車の全体側面図、図２はパワーユニ
ットの側面図、図３は図２の３−３線断面図、図４は図
２の４−４線断面図、図５は図２の５−５線断面図、図
６は図５の６−６線断面図、図７は制御系のブロック図
である。1 to 7 show an embodiment of the present invention. FIG. 1 is an overall side view of a motorcycle, FIG. 2 is a side view of a power unit, and FIG. 3 is a sectional view taken along line 3-3 of FIG. 4 is a sectional view taken along line 4-4 of FIG. 2, FIG. 5 is a sectional view taken along line 5-5 of FIG. 2, FIG. 6 is a sectional view taken along line 6-6 of FIG. 5, and FIG. 7 is a block diagram of a control system. ..
【００１０】図１に示すように、自動三輪車Ｖは鋼管溶
接により構成した車体フレーム１を備え、その前部には
前輪Ｗｆがハンドル２によって操向自在に支持される。
車体フレーム１の後部に設けた固定ブラケット３には、
車体前後方向に配設した揺動軸４を介して可動ブラケッ
ト５が左右揺動自在に支持され、その可動ブラケット５
にはピボット６（図２および図３参照）を介して揺動型
のパワーユニットＰの前端が上下揺動自在に支持され
る。As shown in FIG. 1, a three-wheeled motor vehicle V is provided with a vehicle body frame 1 formed by steel pipe welding, and a front wheel Wf is rotatably supported by a handle 2 at the front portion thereof.
In the fixed bracket 3 provided on the rear part of the body frame 1,
A movable bracket 5 is swingably supported left and right via a swing shaft 4 arranged in the front-rear direction of the vehicle body.
A front end of an oscillating power unit P is supported by the pivot 6 via a pivot 6 (see FIGS. 2 and 3) so as to be vertically swingable.
【００１１】パワーユニットＰの内部には走行用動力源
としてのモータ７（図３参照）とミッション８（図４参
照）が収納され、その後部には左右一対の後輪Ｗｒが支
持される。パワーユニットＰの上部に位置するように前
記可動ブラケット５に固定されたバッテリ支持枠９に
は、前記モータ７を駆動するための４個のバッテリ１０
が搭載される。バッテリ支持枠９とパワーユニットＰと
は左右一対のリヤクッション１１によって連結される。Inside the power unit P, a motor 7 (see FIG. 3) as a power source for traveling and a mission 8 (see FIG. 4) are housed, and a pair of left and right rear wheels Wr are supported at the rear portion thereof. The battery support frame 9 fixed to the movable bracket 5 so as to be located above the power unit P includes four batteries 10 for driving the motor 7.
Will be installed. The battery support frame 9 and the power unit P are connected by a pair of left and right rear cushions 11.
【００１２】前記車体フレーム１を覆う合成樹脂製のボ
ディ１２の前部には、運転者を風雨および直射日光から
遮るウインドシールド１３とルーフ１４が接続され、そ
のルーフ１４の後端はシート１５とトランク１６の間に
立設した支柱１７の上端に支持される。A windshield 13 and a roof 14 that shield the driver from wind and rain and direct sunlight are connected to the front of a synthetic resin body 12 that covers the vehicle body frame 1, and the rear end of the roof 14 is a seat 15. It is supported on the upper ends of columns 17 standing between the trunks 16.
【００１３】次に、図２〜図４に基づいてパワーユニッ
トＰの構造を説明する。パワーユニットＰは車体前後方
向に延びる垂直面で左右に分割された左側ケース２１と
右側ケース２２を備え、左側ケース２１の前端に突設し
た上下一対のボス部２１1 に固定した左右一対の三角形
の連結部材２３により、ボールジョイントよりなる前記
ピボット６に支持される。Next, the structure of the power unit P will be described with reference to FIGS. The power unit P includes a left case 21 and the right case 22 is divided into left and right vertical plane extending in the longitudinal direction of the vehicle body, the upper and lower projecting from the front end of the left case 21 boss 21 1 of fixed pair of triangular The connecting member 23 supports the pivot 6 formed of a ball joint.
【００１４】左側ケース２１と右側ケース２２により画
成される空間の前部に配設されるモータ７は直流ブラシ
レスモータであって、一対のボールベアリング２４を介
して支持した回転軸２５を備える。回転軸２５には鉄心
２６の外周に永久磁石２７を配設した回転子２８が装着
されるとともに、右側ケース２２の前部右側開口部を覆
う右側カバー２９には鉄心３０とその回りに巻回したコ
イル３１よりなる固定子３２が支持される。右側カバー
２９の右側面にはモータ７を駆動するためのモータドラ
イバーや回転軸２５の位相を検出する回転位置センサ
（図示せず）を覆うドライバーハウジング３３が装着さ
れるとともに、左側ケース２１の側面を覆う左側カバー
３４の内部には回転軸２５の左端に設けた発進用の自動
遠心クラッチ３５が収納される。The motor 7 disposed in the front part of the space defined by the left case 21 and the right case 22 is a DC brushless motor and has a rotating shaft 25 supported via a pair of ball bearings 24. A rotor 28 having a permanent magnet 27 arranged on the outer circumference of an iron core 26 is mounted on the rotating shaft 25, and an iron core 30 and a coil around the iron core 30 are wound on a right cover 29 that covers the front right opening of the right case 22. A stator 32 including the coil 31 is supported. A driver housing 33 that covers a motor driver for driving the motor 7 and a rotational position sensor (not shown) that detects the phase of the rotary shaft 25 is attached to the right side surface of the right side cover 29, and the side surface of the left side case 21. An automatic centrifugal clutch 35 for starting, which is provided at the left end of the rotary shaft 25, is housed inside the left side cover 34 that covers the.
【００１５】ミッション８を覆う左側ケース２１と右側
ケース２２間には、メインシャフト３６が一対のボール
ベアリング３７で支持されるとともに、カウンタシャフ
ト３８がボールベアリング３９およびローラベアリング
４０を介して支持される。メインシャフト３６に固定し
たプライマリドリブンギヤ４１にはモータ７の回転軸２
５に前記自動遠心クラッチ３５を介して結合されるプラ
イマリドライブギヤ４２が噛合する。メインシャフト３
６とカウンタシャフト３８には、後述のシフトドラム駆
動機構を介して所望の変速段を確立する複数のギヤ列Ｇ
が設けられる。カウンタシャフト３８に固定したファイ
ナルドライブギヤ４３からファイナルドリブンギヤ４４
に入力された駆動力は、差動装置４５から左右のドライ
ブシャフト４６を介して左右の後輪Ｗｒに伝達される。A main shaft 36 is supported by a pair of ball bearings 37, and a counter shaft 38 is supported via a ball bearing 39 and a roller bearing 40 between the left case 21 and the right case 22 which cover the mission 8. .. The primary driven gear 41 fixed to the main shaft 36 includes a rotary shaft 2 of the motor 7.
5, a primary drive gear 42, which is connected via the automatic centrifugal clutch 35, meshes. Main shaft 3
6 and the counter shaft 38, a plurality of gear trains G that establish desired gears via a shift drum drive mechanism described later.
Is provided. From the final drive gear 43 fixed to the counter shaft 38 to the final driven gear 44
The driving force input to is transmitted from the differential device 45 to the left and right rear wheels Wr via the left and right drive shafts 46.
【００１６】図２および図５，６に示すように、ミッシ
ョン８のカウンタシャフト３８の上部にはシフトフォー
ク軸４７とシフトドラム４８が支持される。シフトフォ
ーク軸４７に軸方向摺動自在に支持されて前記ギヤ列Ｇ
に接続する３本のシフトフォーク４９，５０，５１は、
シフトドラム４８の外周に形成した３本のカム溝４
８ 1 ，４８2 ，４８3 に係合して駆動される。As shown in FIG. 2 and FIGS.
On the upper side of the counter shaft 38 of the
The shaft 47 and the shift drum 48 are supported. Shift fo
The gear train G supported by the shaft 47 so as to be slidable in the axial direction.
The three shift forks 49, 50, 51 connected to
Three cam grooves 4 formed on the outer periphery of the shift drum 48
8 1, 482, 483Is driven to engage.
【００１７】ボールベアリング５２で支持したシフトド
ラム４８の一端から延びるシフトドラム軸５３は、電動
モータ５４の駆動力によってゼネバストップ機構５５を
介して間歇回転駆動される。すなわち、右側ケース２１
の後部右側面に設けたギヤハウジング５６，５７の外側
に支持した前記電動モータ５４の駆動力は、該電動モー
タ５４の出力軸に形成したピニオン５４1 から第１中間
軸５８に支持したギヤ５９，６０を介して第２中間軸６
１のギヤ６２に伝達される。そして前記ゼネバストップ
機構５５は、第２中間軸６１の端部に固着した駆動ロー
タ６３と前記シフトドラム軸５３に相対回転自在に支持
した従動ロータ６４から構成される。The shift drum shaft 53 extending from one end of the shift drum 48 supported by the ball bearings 52 is intermittently rotated by the driving force of the electric motor 54 via the Genebus top mechanism 55. That is, the right case 21
The driving force of the electric motor 54 supported on the outside of the gear housings 56 and 57 provided on the rear right side surface of the rear portion is driven by a pinion 54 1 formed on the output shaft of the electric motor 54 and a gear 59 supported on the first intermediate shaft 58. , 60 through the second intermediate shaft 6
1 is transmitted to the gear 62. The Genebus top mechanism 55 is composed of a drive rotor 63 fixed to the end of the second intermediate shaft 61 and a driven rotor 64 rotatably supported by the shift drum shaft 53.
【００１８】駆動ロータ６３は第２中間軸６１から偏心
したピン６３1 と、そのピン６３1 の反対側に形成され
た円弧状の位置決め凸部６３2 を備える。一方、従動ロ
ータ６４は６０°間隔で半径方向に延びて前記ピン６３
1 が係合する５本の溝６４1 と、その外周に６０°間隔
で形成されて前記位置決め凸部６３2 が係合する６個の
円弧状の位置決め凹部６４2 を備える。ギヤハウジング
５７には第２中間軸６１の回転位置、すなわちゼネバス
トップ機構５５の駆動ロータ６３が図５，６の停止位置
にあることを検出するためのリミットスイッチ６５が設
けられるとともに、シフトドラム軸５３の端部にはシフ
トドラム４８の回転位置、すなわちシフトドポジション
を検出するロータリエンコーダ６６が設けられる。The drive rotor 63 has a pin 63 1 eccentric from the second intermediate shaft 61 and an arcuate positioning protrusion 63 2 formed on the opposite side of the pin 63 1 . On the other hand, the driven rotor 64 extends in the radial direction at intervals of 60 ° and the pin 63
1 is provided with grooves 64 1 in five engaging, six arc-shaped positioning recess 64 2 where the positioning projection 63 2 is formed at 60 ° intervals on the outer periphery is engaged. The gear housing 57 is provided with a limit switch 65 for detecting the rotational position of the second intermediate shaft 61, that is, the drive rotor 63 of the Genebus top mechanism 55 at the stop position shown in FIGS. A rotary encoder 66 for detecting the rotational position of the shift drum 48, that is, the shifted position is provided at the end of 53.
【００１９】シフトドラム軸５３に相対回転自在に支持
された従動ロータ６４の回転は、ロストモーション機構
６７を介してシフトドラム軸５３に伝達される。ロスト
モーション機構６７は従動ロータ６４の溝６４1 の無い
部分に植設したピン６８と、シフトドラム軸５３に固着
されて前記ピン６８の内側に平行に延びる突起６９1 を
有する従動部材６９と、シフトドラム軸５３に巻付けら
れて両端に前記ピン６８と従動部材６９の突起６９1 を
挟む一対の係合部７０1 を有するコイルばね７０から構
成される。The rotation of the driven rotor 64 rotatably supported by the shift drum shaft 53 is transmitted to the shift drum shaft 53 via the lost motion mechanism 67. The lost motion mechanism 67 includes a pin 68 planted in a portion of the driven rotor 64 where there is no groove 64 1 , and a driven member 69 having a protrusion 69 1 fixed to the shift drum shaft 53 and extending parallel to the inside of the pin 68. The coil spring 70 is wound around the shift drum shaft 53 and has a pair of engaging portions 70 1 sandwiching the pin 68 and the projection 69 1 of the driven member 69 at both ends.
【００２０】図７はシフトチェンジのための制御系を示
すブロック図であって、走行用モータ７の回転数が入力
される電子制御ユニット８１に接続された同期信号発生
器８２には、ゼネバストップ機構５５の駆動ロータ６３
が１回転する毎に信号を出力する前記リミットスイッチ
６５からの信号と、ゼネバストップ機構５５の従動ロー
タ６４を支持するシフトドラム軸５３の回転位置を検出
するロータリエンコーダ６６からの信号が入力される。
そして、同期信号発生器８２の出力信号によりチェンジ
用モータドライバー８３を介してチェンジ用電動モータ
５４の駆動が制御されるとともに、走行用モータドライ
バー８４を介して走行用モータ７の駆動が制御される。FIG. 7 is a block diagram showing a control system for a shift change. The synchronization signal generator 82 connected to the electronic control unit 81 to which the rotation speed of the traveling motor 7 is input has a Genebus top. Drive rotor 63 of mechanism 55
A signal from the limit switch 65 that outputs a signal each time the rotor rotates once, and a signal from the rotary encoder 66 that detects the rotational position of the shift drum shaft 53 that supports the driven rotor 64 of the Genebus top mechanism 55 are input. ..
The output signal of the synchronization signal generator 82 controls the drive of the change electric motor 54 via the change motor driver 83, and the drive of the drive motor 7 via the drive motor driver 84. ..
【００２１】次に、前述の構成を備えた本発明の実施例
の作用を説明する。Next, the operation of the embodiment of the present invention having the above construction will be described.
【００２２】バッテリ１０から供給される電力でパワー
ユニットＰのモータ７が駆動されると、その回転軸２５
の回転は自動遠心クラッチ３５、プライマリドライブギ
ヤ２およびプライマリドリブンギヤ４１を介してミッシ
ョン８のメインシャフト３６に伝達される。メインシャ
フト３６の回転はギヤ列Ｇにより確立された所望の変速
段で減速されてカウンタシャフト３８に伝達され、そこ
からファイナルドライブギヤ４３、ファイナルドリブン
ギヤ４４、および差動装置４５を介して左右の後輪Ｗｒ
に伝達される。When the motor 7 of the power unit P is driven by the electric power supplied from the battery 10, its rotating shaft 25
Is transmitted to the main shaft 36 of the mission 8 via the automatic centrifugal clutch 35, the primary drive gear 2 and the primary driven gear 41. The rotation of the main shaft 36 is decelerated at a desired gear stage established by the gear train G and transmitted to the counter shaft 38, and from there, via the final drive gear 43, the final driven gear 44, and the differential device 45, left and right rear. Wheel Wr
Be transmitted to.
【００２３】さて、シフトチェンジが行われていないと
き、ゼネバストップ機構５５の駆動ロータ６３の位置決
め凸部６３2 は従動ロータ６４の何れかの位置決め凹部
６４ 2 に係合し、該従動ロータ６４を所定位置に位置決
めした状態にある。したがって、従動ロータ６４のピン
６８に対して、シフトドラム軸５３に固定したロストモ
ーション機構６７の突起６９1がコイルばね７０の両端
の係止部７０1 に挟持されて同位置に位置決めされるた
め、シフトドラム４８も前記従動ロータ６４の停止位置
に対応する停止位置に位置決めされる。Now, if there is no shift change
The position of the drive rotor 63 of the Genebus top mechanism 55.
Convex portion 632Is a positioning recess of any of the driven rotor 64
64 2To position the driven rotor 64 at a predetermined position.
It is in a bad state. Therefore, the pin of the driven rotor 64
68 against the lost drum fixed to the shift drum shaft 53
Projection 69 of the rotation mechanism 671Are both ends of the coil spring 70
Locking part 701It is sandwiched between and positioned at the same position.
Therefore, the shift drum 48 is also at the stop position of the driven rotor 64.
Is positioned at the stop position corresponding to.
【００２４】この状態から、運転者が例えばハンドル２
に設けたシフトスイッチ（図示せず）を操作して変速指
令信号を発すると、電子制御ユニット８１の指令に基づ
いて、同期信号発生器８２がモータドライバー８４を介
して走行用モータ７をシフトチェンジが行われる間だけ
停止させるとともに、モータドライバー８３を介してシ
フトチェンジ用電動モータ５４を駆動する。このとき、
走行用モータ７の回転数とロータリエンコーダ６６が出
力するシフトポジションに基づき、シフトチェンジが滑
らかに行われるように前記チェンジ用電動モータ５４の
駆動タイミングが制御される。そして第２中間軸６１が
１回転してシフトチェンジが完了したことたことをリミ
ットスイッチ６５が検出すると、チェンジ用電動モータ
５４の駆動が停止され、それと同時に停止していた走行
用モータ７が再び駆動される。From this state, the driver, for example, the steering wheel 2
When a shift switch (not shown) provided on the vehicle is operated to issue a shift command signal, the sync signal generator 82 shifts the traveling motor 7 via the motor driver 84 based on a command from the electronic control unit 81. The electric motor 54 for shift change is driven via the motor driver 83 while being stopped only during the period. At this time,
Based on the rotation speed of the traveling motor 7 and the shift position output by the rotary encoder 66, the drive timing of the change electric motor 54 is controlled so that the shift change is smoothly performed. When the limit switch 65 detects that the second intermediate shaft 61 makes one rotation and the shift change is completed, the drive of the electric motor 54 for change is stopped, and at the same time, the traveling motor 7 that is stopped is restarted. Driven.
【００２５】上述のようにして電動モータ５４が駆動さ
れたとき、その回転はピニオン５４ 1 とギヤ５９，６
０，６２を介してゼネバストップ機構５５の駆動ロータ
６３を前記リミットスイッチ６５が再び作動するまで３
６０°回転させる。駆動ロータ６３が３６０°回転する
ことにより、そのピン６３1 が従動ロータ６４の溝６４
1 の１つに係合して該従動ロータ６４を６０°だけシフ
トアップ方向あるいはシフトダウン方向に回転させると
ともに、駆動ロータ６３の位置決め凸部６３2 が従動ロ
ータ６４の他の位置決め凹部６４2 に係合して位置決め
する。The electric motor 54 is driven as described above.
When rotated, its rotation is pinion 54 1And gear 59,6
Drive rotor of Geneva Top mechanism 55 via 0, 62
3 until the limit switch 65 is actuated again
Rotate 60 °. The drive rotor 63 rotates 360 °
The pin 631Is the groove 64 of the driven rotor 64
1Of the driven rotor 64 by shifting the driven rotor 64 by 60 °.
When rotating in the up or down direction
Together, the positioning protrusion 63 of the drive rotor 632Is driven
Other positioning recesses 64 of the data 642Position by engaging with
To do.
【００２６】このようにしてゼネバストップ機構５５の
従動ロータ６４が６０°回転すると、そのピン６８の動
きがコイルばね７０を介して従動部材６９の突起６９1
に伝達されるため、シフトドラム４８も６０°回転して
新たなシフトポジションにおいて停止する。そしてシフ
トドラム４８に回転により、そのカム溝４８1 〜４８ 3
に係合するシフトフォーク４９〜５１がシフトフォーク
軸４７に沿って移動し、ミッション８のギヤ列Ｇに新た
な変速段を確立させる。In this way, the Geneva top mechanism 55
When the driven rotor 64 rotates 60 °, its pin 68 moves.
Through the coil spring 70, the projection 69 of the driven member 691
Therefore, the shift drum 48 also rotates 60 °.
Stop at the new shift position. And Schiff
The rotation of the drum 48 causes the cam groove 48 to rotate.1~ 48 3
Shift forks 49 to 51 engaging with the shift fork
It moves along the axis 47 and is newly added to the gear train G of the mission 8.
Establish a proper gear.
【００２７】さて、何らかの理由で上記シフトチェンジ
がスムーズに行われず、シフトフォーク４９〜５１およ
びシフトドラム４８が瞬間的にストップ状態になる場合
があるが、シフトドラム４８とゼネバストップ機構５５
の間に設けたロストモーション機構６７の作用によって
電動モータ５４に過剰な負荷が加わることが防止され
る。すなわち、シフトドラム４８と一体の従動部材６９
が一時的にストップ状態にある時にゼネバストップ機構
５５の従動ロータ６４に設けたピン６８が回転すると、
そのピン６８と従動部材６９の突起６９1 とが相対回転
し、コイルばね７０の一対の係止部７０1 を相互に離間
するように弾性変形させる。その結果、シフトドラム４
８がストップしても電動モータ５４は回転することがで
き、その電動モータ５４に過負荷が加わることが回避さ
れる。そして前記ストップしたシフトドラム４８にはコ
イルばね７０を介して弾発力が作用しているため、前記
ストップが解除されるとシフトドラム４８はコイルばね
７０の弾発力で所定位置まで回転し、所望の変速段が確
立される。The shift change may not be performed smoothly for some reason, and the shift forks 49 to 51 and the shift drum 48 may momentarily stop. However, the shift drum 48 and the Genebass top mechanism 55 may be stopped.
An excessive load is prevented from being applied to the electric motor 54 by the action of the lost motion mechanism 67 provided between the two. That is, the driven member 69 integrated with the shift drum 48
When the pin 68 provided on the driven rotor 64 of the Genebus top mechanism 55 rotates while the engine is temporarily stopped,
The pin 68 and the projection 69 1 of the driven member 69 rotate relative to each other, and elastically deform the pair of locking portions 70 1 of the coil spring 70 so as to separate from each other. As a result, the shift drum 4
Even if 8 is stopped, the electric motor 54 can rotate, and it is avoided that the electric motor 54 is overloaded. Since the elastic force acts on the stopped shift drum 48 via the coil spring 70, when the stop is released, the shift drum 48 rotates to a predetermined position by the elastic force of the coil spring 70. The desired gear is established.
【００２８】上述のように電動モータ５４で駆動される
シフトドラム４８が一時的にストップしても、ゼネバス
トップ機構５５とシフトドラム４８間に介装したロスト
モーション機構６７の作用により、電動モータ５４に過
負荷が加わることが防止されるだけでなく、シフトチェ
ンジをスムーズに行わせることができる。Even if the shift drum 48 driven by the electric motor 54 is temporarily stopped as described above, the lost motion mechanism 67 interposed between the gene bus top mechanism 55 and the shift drum 48 causes the electric motor 54 to operate. Not only is it possible to prevent an overload from being applied to the vehicle, but it is also possible to smoothly perform a shift change.
【００２９】以上、本発明の実施例を詳述したが、本発
明は前記実施例に限定されるものでなく、特許請求の範
囲に記載された本発明を逸脱することなく種々の小設計
変更を行うことが可能である。Although the embodiments of the present invention have been described in detail above, the present invention is not limited to the above embodiments, and various small design changes can be made without departing from the present invention described in the claims. It is possible to
【００３０】例えば、実施例では自動三輪車用を例示し
たが、このシフトドラム駆動機構は自動二輪車や四輪車
等の他の車両に対しても適用可能である。また、請求項
１の発明における入力手段は電動モータに限らず油圧モ
ータであっても良く、更にマニュアル操作であっても良
い。For example, in the embodiment, the one for a motorcycle is illustrated, but this shift drum drive mechanism can be applied to other vehicles such as a motorcycle and a four-wheel vehicle. Further, the input means in the invention of claim 1 is not limited to the electric motor, and may be a hydraulic motor or may be a manual operation.
【００３１】[0031]
【発明の効果】以上のように本発明の第１の特徴によれ
ば、入力手段の駆動力が間歇回転機構を介して伝達され
るシフトドラム軸が瞬間的にストップしても、その間歇
回転機構とシフトドラム軸間に設けたロストモーション
機構の弾発部材が弾性変形するため、前記入力手段はス
トップすることなく回転して入力手段への過負荷が防止
される。しかも、ストップしたシフトドラム軸にはロス
トモーション機構の弾発部材の付勢力が作用するため、
ストップが解除すると同時に前記弾発部材の付勢力でシ
フトドラム軸を所定のポジションへ回転させることがで
きる。As described above, according to the first feature of the present invention, even if the shift drum shaft to which the driving force of the input means is transmitted through the intermittent rotation mechanism is momentarily stopped, the intermittent rotation is performed. Since the elastic member of the lost motion mechanism provided between the mechanism and the shift drum shaft is elastically deformed, the input means rotates without stopping and the overload on the input means is prevented. Moreover, since the biasing force of the elastic member of the lost motion mechanism acts on the stopped shift drum shaft,
At the same time when the stop is released, the shift drum shaft can be rotated to a predetermined position by the urging force of the elastic member.
【００３２】また本発明の第２の特徴によれば、電動モ
ータの回転が駆動ロータのピンと従動ロータの溝の係合
によりシフトドラム軸に伝達され、且つ駆動ロータの位
置決め凸部と従動ロータの位置決め凹部の係合によりシ
フトドラム軸が位置決めされるので、電動モータの回転
角を精密に制御しなくてもシフトドラム軸を間歇回転さ
せて所定のポジションに精密に停止させることができ、
これにより電動モータの回転制御が簡素化される。According to the second aspect of the present invention, the rotation of the electric motor is transmitted to the shift drum shaft by the engagement of the pin of the drive rotor and the groove of the driven rotor, and the positioning protrusion of the drive rotor and the driven rotor are engaged. Since the shift drum shaft is positioned by the engagement of the positioning recess, the shift drum shaft can be intermittently rotated and precisely stopped at a predetermined position without precisely controlling the rotation angle of the electric motor.
This simplifies the rotation control of the electric motor.
【図１】自動三輪車の全体側面図[Figure 1] Overall side view of a motorcycle
【図２】パワーユニットの側面図FIG. 2 is a side view of the power unit.
【図３】図２の３−３線断面図3 is a sectional view taken along line 3-3 of FIG.
【図４】図２の４−４線断面図4 is a sectional view taken along line 4-4 of FIG.
【図５】図２の５−５線断面図5 is a sectional view taken along line 5-5 of FIG.
【図６】図５の６−６線断面図6 is a sectional view taken along line 6-6 of FIG.
【図７】制御系のブロック図FIG. 7 is a block diagram of a control system
５３・・・・・シフトドラム軸 ５４・・・・・電動モータ（入力手段） ５５・・・・・ゼネバストップ機構（間歇回転機構） ６１・・・・・第２中間軸（駆動軸） ６３・・・・・駆動ロータ ６３1 ・・・・ピン ６３2 ・・・・位置決め凸部 ６４・・・・・従動ロータ ６４1 ・・・・溝 ６４2 ・・・・位置決め凹部 ６７・・・・・ロストモーション機構 ７０・・・・・コイルばね（弾発部材）53-Shift drum shaft 54-Electric motor (input means) 55-Geneva top mechanism (intermittent rotation mechanism) 61-Second intermediate shaft (driving shaft) 63 ... Drive rotor 63 1 ... Pin 63 2 ... Positioning convex portion 64 ... Driven rotor 64 1 ... Groove 64 2 ... Positioning concave portion 67 ... ..Lost motion mechanism 70 .. Coil spring (elastic member)
Claims (2)
（５５）を介してシフトドラム軸（５３）に伝達する変
速装置のシフトドラム駆動機構であって、 間歇回転機構（５５）とシフトドラム軸（５３）間に、
間歇回転機構（５５）の駆動力を弾発部材（７０）を介
してシフトドラム軸（５３）に伝達するロストモーショ
ン機構（６７）を介在させたことを特徴とする、変速装
置のシフトドラム駆動機構。1. A shift drum drive mechanism of a transmission for transmitting a driving force of an input means (54) to a shift drum shaft (53) through an intermittent rotation mechanism (55), the intermittent rotation mechanism (55) Between the shift drum shafts (53),
A shift drum drive of a transmission, characterized by interposing a lost motion mechanism (67) for transmitting the driving force of the intermittent rotation mechanism (55) to the shift drum shaft (53) through the elastic member (70). mechanism.
タ（５４）の駆動力を間歇回転機構（５５）を介してシ
フトドラム軸（５３）に伝達する変速装置のシフトドラ
ム駆動機構であって、 間歇回転機構（５５）が電動モータ（５４）に作動的に
連結した駆動軸（６１）に設けた駆動ロータ（６３）と
シフトドラム軸（５３）に設けた従動ロータ（６４）か
ら構成され、駆動ロータ（６３）は駆動軸（６１）から
偏心したピン（６３1 ）と、そのピン（６３1 ）の反対
側に形成された円弧状の位置決め凸部（６３2 ）を備え
るとともに、従動ロータ（６４）は等間隔で半径方向に
延びて前記ピン（６３1 ）が係合する溝（６４1 ）と、
その溝（６４1 ）の間に等間隔に形成されて前記位置決
め凸部（６３2 ）が係合する円弧状の位置決め凹部（６
４ 2 ）を備えることを特徴とする、変速装置のシフトド
ラム駆動機構。2. An electric motor that operates based on a shift command signal.
Drive force of the motor (54) via the intermittent rotation mechanism (55).
The shift driver of the transmission that transmits the shift drum shaft (53).
A drive mechanism, in which the intermittent rotation mechanism (55) operates the electric motor (54).
A drive rotor (63) provided on the connected drive shaft (61),
Is it a driven rotor (64) provided on the shift drum shaft (53)?
Drive rotor (63) from the drive shaft (61)
Eccentric pin (631) And its pin (631) Opposite
Arc-shaped positioning protrusion (632)
And the driven rotor (64) is evenly spaced in the radial direction.
Extend the pin (631) Engaging groove (641)When,
The groove (641) Are formed at even intervals between
Convex part (632) Engaging circular arc-shaped positioning recess (6
Four 2) Is provided in the transmission of the transmission.
Ram drive mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3194229A JP3044498B2 (en) | 1991-08-02 | 1991-08-02 | Shift drum drive mechanism for transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3194229A JP3044498B2 (en) | 1991-08-02 | 1991-08-02 | Shift drum drive mechanism for transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0539865A true JPH0539865A (en) | 1993-02-19 |
| JP3044498B2 JP3044498B2 (en) | 2000-05-22 |
Family
ID=16321113
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3194229A Expired - Fee Related JP3044498B2 (en) | 1991-08-02 | 1991-08-02 | Shift drum drive mechanism for transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3044498B2 (en) |
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-
1991
- 1991-08-02 JP JP3194229A patent/JP3044498B2/en not_active Expired - Fee Related
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