JPS62110058A - Drive pulley of v-belt stepless speed change gear - Google Patents

Drive pulley of v-belt stepless speed change gear

Info

Publication number
JPS62110058A
JPS62110058A JP24983685A JP24983685A JPS62110058A JP S62110058 A JPS62110058 A JP S62110058A JP 24983685 A JP24983685 A JP 24983685A JP 24983685 A JP24983685 A JP 24983685A JP S62110058 A JPS62110058 A JP S62110058A
Authority
JP
Japan
Prior art keywords
movable pulley
pulley half
belt
flyweight
radius
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.)
Pending
Application number
JP24983685A
Other languages
Japanese (ja)
Inventor
Hiroshige Inui
博篤 乾
Mitsuo Shiga
光男 志賀
Isao Fujio
勲 藤生
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Yamada Manufacturing Co Ltd
Original Assignee
Honda Motor Co Ltd
Yamada Seisakusho KK
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 Honda Motor Co Ltd, Yamada Seisakusho KK filed Critical Honda Motor Co Ltd
Priority to JP24983685A priority Critical patent/JPS62110058A/en
Publication of JPS62110058A publication Critical patent/JPS62110058A/en
Pending legal-status Critical Current

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  • Transmissions By Endless Flexible Members (AREA)

Abstract

PURPOSE:To improve the durability of a bearing for supporting a movable pulley and a cover by making the radius of a fly weight in the expanding direction substantially agree with the radius of a V-belt in the expanding direction, and supporting a movable pulley half body and a cover at two points. CONSTITUTION:A movable pulley half body 3 and a cover 5 are integrally formed, and both of them are supported at both end portions on a rotary shaft 6 through two bearings 12, 19. On the other hand, the radius of a fly weight 8 for moving the movable pulley half body 3 in the axial direction to the rotary shaft is set in such a manner as to substantially agree with the radius of a V-belt within the accelerating and decelerating range to the rotary shaft 6. Thus, deviated load is not applied to the bearings 12, 19, so that the durability of the bearings 12, 19 can be improved remarkably.

Description

【発明の詳細な説明】 [産業上の利用分野1 こ、の発明は、Vベルト式無段変速機に使用されるドラ
イブプーリの新規な構造に係り、特に可動プーリ半体に
カバーを被菫したものにおいて、回転時の偏荷重に対し
て耐久性の良好な構造に関する。
[Detailed Description of the Invention] [Industrial Application Field 1] This invention relates to a novel structure of a drive pulley used in a V-belt continuously variable transmission, and in particular a method in which a movable pulley half is covered with a cover. The present invention relates to a structure that has good durability against uneven loads during rotation.

[従来の技術] フライウェイトを利用して、ベルト径を変化させ無段変
速を行うVベルト式無段変速機は公知である。
[Prior Art] A V-belt type continuously variable transmission that uses flyweights to change the belt diameter and performs continuously variable transmission is well known.

この変速装置におけるドライブプーリは、固定プーリ半
体と可動プーリ半体からなり、可動プーリ半体は、クラ
ンク軸等のエンジン出力軸と一体回転するフライウェイ
トの作用によって軸上を摺動進退し、両プーリ半体間の
間隔を自在に変化させるようになっている。これにより
1両プーリ半体間に巻掛けられたVベルトの回転半径を
変化させ、無段変速を行う。
The drive pulley in this transmission consists of a fixed pulley half and a movable pulley half, and the movable pulley half slides back and forth on the shaft by the action of a flyweight that rotates integrally with the engine output shaft such as the crankshaft. The distance between both pulley halves can be freely changed. This changes the rotation radius of the V-belt wound between the two pulley halves, thereby achieving continuously variable speed.

ところで、可動プーリ半体にカバーを取付け、摺動部等
を内蔵するものが、例えば、特開昭47−43847号
に示されるように公知である。この公知例は、可動プー
リ半体とカバーとが一体になって、同一の回転軸上を摺
動するようになっている。したがって、可動部は回転軸
に対して少くとも2点で支持されている。またこのフラ
イウェイトは、側面がカム状の曲面を有する腕状部材で
あり、その側面は可動プーリ半体の背面に固定されたロ
ーラ部材に当接されている。一方、フライウェイトは1
回転軸に対して摺動及び回転不能に固定され、かつ、半
径方向に突出する支持部材によって、回転可能に支持さ
れている。
By the way, a movable pulley half having a cover attached thereto and having a built-in sliding part, etc., is known, for example, as shown in Japanese Patent Laid-Open No. 47-43847. In this known example, the movable pulley half and the cover are integrated and slide on the same rotation axis. Therefore, the movable part is supported at at least two points with respect to the rotating shaft. Further, this flyweight is an arm-shaped member having a cam-shaped curved side surface, and the side surface thereof is in contact with a roller member fixed to the back surface of the movable pulley half. On the other hand, the fly weight is 1
It is fixed non-slidably and non-rotatably with respect to the rotating shaft, and is rotatably supported by a support member that protrudes in the radial direction.

したがって、フライウェイトが支持部材の支持点を支点
として拡開すると、可動プーリ半体の背面に固定され九
ローラ部材を押し、これにより可動プーリ半体が前進し
て、Vベルトのベルト半径を拡大させる。
Therefore, when the flyweight expands using the support point of the support member as a fulcrum, it is fixed to the back side of the movable pulley half and pushes the nine roller member, which moves the movable pulley half forward and expands the belt radius of the V-belt. let

[発明が解決しようとする問題点] 上記従来例において、可動プーリ半体に対してフライウ
ェイトが拡開作用する点は、固定されたローラ部材であ
って一定である。しかるに、Vベルトのベルト半径はフ
ライウェイトの拡開量に応じて変動する。この結果、可
動プーリ半体のベルト接触面であるプーリ面を挾んで、
Vベルトがローラ部材と同じ位置にあるときは問題がな
いが、Vベルトがプーリ面上を移動して、ローラ部材の
固定位置から外れるにしたがって、次第に可動プーリ半
体及びカバーの軸受部に偏荷重が作用し易くなる。この
結果、軸受の耐久性が低下することになる。
[Problems to be Solved by the Invention] In the conventional example described above, the point at which the flyweight acts to expand the movable pulley half is constant because it is a fixed roller member. However, the belt radius of the V-belt varies depending on the amount of expansion of the flyweights. As a result, the movable pulley halves sandwich the pulley surface, which is the belt contact surface,
There is no problem when the V-belt is in the same position as the roller member, but as the V-belt moves on the pulley surface and moves away from the fixed position of the roller member, it gradually becomes biased towards the movable pulley half and the bearing part of the cover. Load becomes easier to apply. As a result, the durability of the bearing is reduced.

本発明はかかる問題点を解決するため、フライウェイト
の拡開方向半径とVベルトの拡開方向半径を一致させて
、軸受に偏荷重を作用しにくくするものである。
In order to solve this problem, the present invention makes the radius of the flyweight in the expanding direction coincide with the radius of the V-belt in the expanding direction, thereby making it difficult to apply an unbalanced load to the bearing.

[問題点を解決するための手段] 本発明におけるVベルト式無段変速機のドライブプーリ
は、上記問題点を解決するため次の構成を特徴とする。
[Means for Solving the Problems] The drive pulley of the V-belt type continuously variable transmission according to the present invention is characterized by the following configuration in order to solve the above problems.

すなわち、同一の回転軸上に設けられVベルトを挟持す
る、固定プーリ半体と可動プーリ半体とからなり、該固
定及び可動の各プーリ半体はそれぞれVベルト接触面で
あるプーリ面を有し、前記可動プーリ半体の背面には半
径方向に延るカム面を形成し、かつ、該カム面から離れ
て位置し前記回転軸と一体回転する支持点を中心として
該カム面と接触しつつ拡開運動するフライウェイトを設
け、前記可動プーリ半体の背面側に、前記フライウェイ
トを覆うカバーを取付は一体化し、前記可動プーリ半体
及び前記カバーのそれぞれに軸受を設け、該軸受を前記
回転軸に摺動可能に支持させるとともに、前記フライウ
ェイトの拡開方向半径と前記Vベルトの拡開方向半径と
を増減速範囲内において略同一としたことを特徴とする
That is, it consists of a fixed pulley half and a movable pulley half that are provided on the same rotating shaft and sandwich the V-belt, and each of the fixed and movable pulley halves has a pulley surface that is a V-belt contact surface. A radially extending cam surface is formed on the back surface of the movable pulley half, and the movable pulley half contacts the cam surface around a support point that is located away from the cam surface and rotates integrally with the rotating shaft. A flyweight that moves while expanding is provided, a cover that covers the flyweight is integrally attached to the back side of the movable pulley half, a bearing is provided on each of the movable pulley half and the cover, and the bearing is mounted on the back side of the movable pulley half. It is characterized in that it is slidably supported on the rotating shaft, and that the radius in the expansion direction of the flyweight and the radius in the expansion direction of the V-belt are substantially the same within an acceleration/deceleration range.

[発明の作用] フライウェイトが拡開すると、カム面を圧接しながら移
動しその拡開方向半径を拡大させる。このとき同時に、
フライウェイトが可動プーリ半体を前進させ、Vベルト
の拡開方向半径を拡大させる。したがって、フライウェ
イトの拡開方向半径とVベルトの拡開方向半径は、増減
速範囲内において常時一致しており、可動プーリ半体の
表裏におけるフライウェイト及びVベルトの各接触点が
略一致する。
[Operation of the Invention] When the flyweight expands, it moves while pressing against the cam surface and expands the radius in the expansion direction. At this time, at the same time,
The flyweight moves the movable pulley half forward, increasing the radius in the expanding direction of the V-belt. Therefore, the radius of the flyweight in the expanding direction and the radius of the V-belt in the expanding direction always match within the acceleration/deceleration range, and the contact points of the flyweight and the V-belt on the front and back sides of the movable pulley half substantially match. .

この結果、フライウェイトが可動プーリ半体を圧接する
位置と、Vベルトがプーリ面に反力を及ぼす位置とが略
一致するので、可動プーリ半体を回転軸に対して左右方
向に傾けて回転させるような状態が回避される。したが
って、可動プーリ半体及びカバーの軸方向摺動において
その軸受が偏荷重を受けにくくなる。
As a result, the position where the flyweight presses the movable pulley half and the position where the V-belt exerts a reaction force on the pulley surface almost match, so the movable pulley half is rotated by tilting it left and right with respect to the rotation axis. situations that would cause this to occur are avoided. Therefore, when the movable pulley half and the cover slide in the axial direction, their bearings are less susceptible to uneven loads.

[実施例] 第1図及び第2図に本発明の実施例であるVベルト式無
段変速機のドライブプーリを示す、第1図は本実施例の
概略図であり、第2図はその詳細を示す断面図である。
[Example] Fig. 1 and Fig. 2 show a drive pulley of a V-belt type continuously variable transmission which is an embodiment of the present invention. Fig. 1 is a schematic diagram of this embodiment, and Fig. 2 shows its It is a sectional view showing details.

まず、第1図に基づいて概略を説明する。ドライブプー
リ1は、同一の回転軸6北に設けた固定プーリ半体2と
可動プーリ半体3とからなる。固定プーリ半体2と可動
プーリ半体3は、それぞれVベルト接触面であるプーリ
面10.11を有する。可動プーリ半体3の背面(プー
リ面11の反対面)には、半径方向に成るカム面15を
形成する。カム面15にはフライウェイト8がこれと接
触して拡開連動するようになっている。フライウェイト
8は、回転軸6から離れて位置し一体回転する支持点P
に取付け、これを中心として拡開運動する。このフライ
ウェイト8の拡開に従って可動プーリ半体3が前進し、
Vベルト4のベルト半径を拡大させる。フライウェイト
及びVベルト4におけるそれぞれの拡開方向半径は増減
速範囲内において略一致している。なお拡開方向半径と
は、拡開時のフライウェイト8又はVベルト4とカム面
との接触点と回転軸6の軸心線との間におけるそれぞれ
の距離をいうものとする。また、増減速範囲とはプーリ
面10.11とVベルト4とが接触してVベルト4を駆
動開始した状態(クランチオン)から最高速となり最早
増速できない限界状!E高直前での範囲をいうものとす
る。
First, an outline will be explained based on FIG. 1. The drive pulley 1 consists of a fixed pulley half 2 and a movable pulley half 3, which are provided on the north side of the same rotating shaft 6. The fixed pulley half 2 and the movable pulley half 3 each have a pulley surface 10.11 which is a V-belt contact surface. A radial cam surface 15 is formed on the back surface of the movable pulley half 3 (the surface opposite to the pulley surface 11). A flyweight 8 is brought into contact with the cam surface 15 and is interlocked with expansion. The flyweight 8 is located at a support point P that is located apart from the rotating shaft 6 and rotates together with it.
It is attached to the center and the expansion movement is performed around this point. As the flyweight 8 expands, the movable pulley half 3 moves forward.
To enlarge the belt radius of the V-belt 4. The radii in the expansion direction of the flyweights and the V-belt 4 are substantially the same within the range of increase/deceleration. Note that the expansion direction radius refers to the respective distances between the point of contact between the flyweight 8 or the V-belt 4 and the cam surface and the axial center line of the rotating shaft 6 during expansion. Also, the acceleration/deceleration range is from the state where the pulley surface 10.11 and the V-belt 4 come into contact and start driving the V-belt 4 (crunch-on) to the maximum speed and the limit state where the speed can no longer be increased! This refers to the range just before E high.

さらに、可動プーリ半体3の背面側に、フライウェイト
8を覆うカバー5を取付は厘体化しである。可動プーリ
半体3及びカバー5にはそれぞれに軸受12.19を設
け、これら軸受を回転軸6に対して摺動可能に外嵌させ
である。
Furthermore, a cover 5 covering the flyweight 8 is attached to the back side of the movable pulley half 3. The movable pulley half 3 and the cover 5 are each provided with bearings 12 and 19, and these bearings are slidably fitted onto the rotating shaft 6.

次に、この作用を説明する。まずフライウェイト8が拡
開すると、フライウェイト8はカム面15に接触しなが
ら上動して拡開方向半径を図示のようにR1→R2→R
3と拡大させる。このとき同時に、フライウェイト8が
可動プーリ半体3を前進させ、Vベルト4の拡開方向半
径を図示のようにLl−L2→L3と拡大させる。した
がって、フライウェイト8の拡開方向半径とVベルト4
の拡開方向半径は増減速範囲内において常時一致してお
り、可動プーリ半体3の表裏におけるフライウェイト8
及びVベルト4の各接触点が略一致して両者が追随変化
している。
Next, this effect will be explained. First, when the flyweight 8 is expanded, the flyweight 8 moves upward while contacting the cam surface 15, and changes the radius in the expansion direction from R1 to R2 to R as shown in the figure.
Expand to 3. At the same time, the flyweight 8 moves the movable pulley half 3 forward, and the radius in the expansion direction of the V-belt 4 is expanded from Ll-L2 to L3 as shown in the figure. Therefore, the radius of the flyweight 8 in the expansion direction and the V-belt 4
The radius in the expansion direction of
The contact points of the V-belt 4 and the V-belt 4 substantially coincide with each other, and both change accordingly.

この結果、フライウェイト8が可動プーリ半体3を圧接
する位置と、Vベルト4がプーリ面11に反力を及ぼす
位置とが略一致するので、可動プーリ半体3を回転軸6
に対して左右方向に傾けて回転させるような状態が回避
される。したがうて、可動プーリ半体3及びカッ<−5
の軸方向摺動において、その軸受12.19が偏荷重を
受けにくくなる。
As a result, the position where the flyweight 8 presses the movable pulley half 3 and the position where the V-belt 4 exerts a reaction force on the pulley surface 11 substantially coincide, so that the movable pulley half 3 is moved to the rotation axis 6.
This avoids a situation where the camera is tilted and rotated in the left-right direction. Therefore, the movable pulley half 3 and the cup <-5
During axial sliding of the bearing 12.19, the bearing 12.19 becomes less susceptible to uneven loads.

次に 第2図に基づいて実施例のドライブプーリを詳細
に説明する。このドライブプーリ1は。
Next, the drive pulley of the embodiment will be explained in detail based on FIG. This drive pulley 1.

固定プーリ半体2と可動プーリ半体3からなり、Wいに
向い合って、断面略V字状の溝を形成し、Vベルト4を
収容している。
It consists of a fixed pulley half 2 and a movable pulley half 3, which face each other to form a groove with a substantially V-shaped cross section, in which a V-belt 4 is accommodated.

可動プーリ半体3の背面(反固定プーリ半体対向面)に
は、カバー5が設けられており、固定プーリ半体2.可
動プーリ半体3及びカバー5が、同一の回転軸6旧に支
持されている。
A cover 5 is provided on the back surface of the movable pulley half 3 (the surface opposite to the fixed pulley half), and a cover 5 is provided on the back surface of the movable pulley half 3 (the surface opposite to the fixed pulley half). The movable pulley half 3 and the cover 5 are supported by the same rotating shaft 6.

可動プーリ半体3とカバー5で形成される空間内には、
スパイダー7及びフライウェイト8が収納されている。
In the space formed by the movable pulley half 3 and the cover 5,
Spider 7 and flyweight 8 are housed.

スパイダー7は、回転軸6に固定され、その一部は半径
方向に突出し、フライウェイト8の支持部となっている
。フライウェイト8はその一端をスパイダー7に支持さ
れ、これを支点として拡開連動可能にされている。なお
、カバー5の回転軸6軸頭部は開口yれており、ここに
樹脂材等より成るキャップ9が着脱自在に取付けられて
いる。
The spider 7 is fixed to the rotating shaft 6, and a portion of the spider 7 protrudes in the radial direction and serves as a support portion for the flyweight 8. One end of the flyweight 8 is supported by the spider 7, and the flyweight 8 can be expanded and interlocked using the spider 7 as a fulcrum. The head of the rotation shaft 6 of the cover 5 is open, and a cap 9 made of resin or the like is detachably attached thereto.

固定プーリ半体2は1回転軸6の軸端と一体化され、軸
方向摺動不能かつ回転不能に固定されている。各プーリ
半体2.3のVベルト4側側面は、Vベルト4の側面に
圧接するプーリ面1O111とされ、両プーリ面はVベ
ルト方向へ凸となる僅かな曲面に形成されている。
The fixed pulley half 2 is integrated with the shaft end of the one-rotation shaft 6, and is fixed so as to be immovable in the axial direction and unrotatable. The side surface of each pulley half 2.3 on the V-belt 4 side is a pulley surface 1O111 that presses against the side surface of the V-belt 4, and both pulley surfaces are formed into slightly curved surfaces convex toward the V-belt.

可動プーリ半体3は、回転軸6上に、軸受12、シール
13.14によって、軸方向摺動可能に支持されている
。プーリ面11の背面には、半径方向の延るカム面15
が周方向等間隔に形成されている。
The movable pulley half 3 is axially slidably supported on the rotating shaft 6 by bearings 12 and seals 13,14. A radially extending cam surface 15 is provided on the back surface of the pulley surface 11.
are formed at equal intervals in the circumferential direction.

可動プーリ半体3の外周縁部は、厚肉形成された取付部
16をなし、ここに椀状をしたカバー5の外周縁部17
をO−リングOを介して合せ、ボルト18で締結されて
いる。カバー5が回転軸6と接触する部分には、軸受1
9が圧入され、軸方向摺動可能にされている。
The outer peripheral edge of the movable pulley half 3 forms a thick-walled mounting part 16, and the outer peripheral edge 17 of the bowl-shaped cover 5 is attached here.
are put together via an O-ring O and fastened with a bolt 18. A bearing 1 is provided at the portion where the cover 5 contacts the rotating shaft 6.
9 is press-fitted and is allowed to slide in the axial direction.

回転軸6は中空軸であり、スパイダー7の取付部分にお
ける外周は、テーパー状部20とされ、スパイダー7と
テーパー結合されている。また、テーパー状部20から
固定プーリ半体2の間は、段部21となっており、この
外周面上を可動プーリ半体3が摺動可能、かつ回転可能
に支承されている0段部21の内側には、グリースカッ
プ22が挿入され、給油部23が形成されている。給油
部23に相当する回転軸6上には、これと連通ずる袖穴
24が開口され、ここから軸受12へ給油されている。
The rotating shaft 6 is a hollow shaft, and the outer periphery of the mounting portion of the spider 7 is formed into a tapered portion 20, and is connected to the spider 7 in a tapered manner. Moreover, between the tapered part 20 and the stationary pulley half 2 is a step 21, and a zero step part on which the movable pulley half 3 is slidably and rotatably supported on the outer peripheral surface. A grease cup 22 is inserted into the inside of 21 to form an oil supply portion 23 . A sleeve hole 24 communicating with the rotary shaft 6 corresponding to the oil supply portion 23 is opened, and oil is supplied to the bearing 12 from there.

給油部23から固定プーリ半体2が固定されている軸端
側の軸内面は、テーパ一部25が形成されている。この
テーパ一部25には、固定プーリ半体2側の開口端より
、これに対応するテーパ一部とネジ穴を有するクランク
軸27の先端が嵌合される。クランク軸27はエンジン
の出力軸であり、本実施例の回転軸の一部をなす0回転
軸6のカバー5側聞目端より、長尺ポルト26が挿入さ
れ、クランク軸27のネジ穴と締結し、これを締め上げ
ることにより、クランク軸27と回転軸6がテーパー結
合される。
A tapered portion 25 is formed on the inner surface of the shaft on the shaft end side from the oil supply portion 23 to which the fixed pulley half 2 is fixed. The tip of a crankshaft 27 having a corresponding taper portion and a screw hole is fitted into this taper portion 25 from the open end on the fixed pulley half 2 side. The crankshaft 27 is the output shaft of the engine, and the long port 26 is inserted from the end of the cover 5 side of the 0-rotation shaft 6, which forms part of the rotation shaft of this embodiment, and is connected to the screw hole of the crankshaft 27. By fastening and tightening, the crankshaft 27 and the rotating shaft 6 are tapered coupled.

長尺ポルト26を締結した後、カバー5の開口部に対し
て、キャップ9がネジ止め等によって取付けられ内部が
密閉される。
After the long port 26 is fastened, the cap 9 is attached to the opening of the cover 5 by screwing or the like to seal the inside.

スパイダー7は、キー28及びナツト29により回転軸
6に対し、軸方向摺動不衡かつ回転不能に固定されてい
る。
The spider 7 is fixed to the rotating shaft 6 by a key 28 and a nut 29 so as to be axially slidably unbalanced and unrotatable.

スパイダー7とカバー5の間には、スプリング31がリ
テーナ−30を介して設けられており、カバー5は、ス
パイダー7に対して図の左方へ移動するよう常時付勢さ
れている。これにより、回転軸6が非回転時にプーリ面
11とVベルト4間に所定のストロークSを保ち、クラ
ッチオフ(OFF)の状態となるようスプリングセット
荷重を与えられている。
A spring 31 is provided between the spider 7 and the cover 5 via a retainer 30, and the cover 5 is always urged to move to the left in the figure with respect to the spider 7. As a result, when the rotating shaft 6 is not rotating, a predetermined stroke S is maintained between the pulley surface 11 and the V-belt 4, and a spring set load is applied so that the clutch is in an OFF state.

また、スパイダー7の先端部にはフライウェイト8が支
持され、周方向等間隔に設けられたカム面15に対応配
置されている。フライウェイト8は、アーム32の一端
にローラ33、他端にローラ状の錘であるウェイトロー
ラ34をそれぞれ回転可能に軸着してなり、ローラ33
及びウェイトローラ34は一対のアーム32(図では一
方しか見えない)によって挟持されている。ローラ33
はスパイダー7先端に形成した支持凹部35内に収容さ
れ、その外周を支持プレート36の屈曲部で抑えられ、
ウェイトローラ34を回転可能に支持している。このロ
ーラ34の軸着点が本発明の支持点となっている。
Furthermore, flyweights 8 are supported at the tip of the spider 7 and are arranged corresponding to cam surfaces 15 provided at equal intervals in the circumferential direction. The flyweight 8 has a roller 33 rotatably attached to one end of an arm 32 and a weight roller 34, which is a roller-shaped weight, attached to the other end of the arm 32.
The weight roller 34 is held between a pair of arms 32 (only one of which is visible in the figure). roller 33
is accommodated in a support recess 35 formed at the tip of the spider 7, and its outer periphery is held down by a bent part of a support plate 36,
A weight roller 34 is rotatably supported. The pivot point of this roller 34 serves as the support point of the present invention.

支持プレート36はスパイダー7と同心円状に形成され
た板状部材であり、スパイダー7の側面に固着されてい
る。ウェイトローラ34は、カム面15上を回転移動可
能に接触さげられている。
The support plate 36 is a plate-shaped member formed concentrically with the spider 7, and is fixed to the side surface of the spider 7. The weight roller 34 is rotatably brought into contact with the cam surface 15.

さらに、スパイダー7の先端部は周方向等間隔に貫通孔
が形成され、支持プレート36によって固定された樹脂
スリーブ37を介して、ガイドピン38が嵌合されてい
る。支持プレート36にはガイドピン38を遊嵌する貫
通孔39が形成され、ガイドピン38は樹脂スリーブ3
7及び貫通孔39を挿通し、その両端は可動プーリ半体
3とカバー5内の各内側側面間に支持されている。
Further, through holes are formed at equal intervals in the circumferential direction at the tip of the spider 7, and guide pins 38 are fitted through resin sleeves 37 fixed by a support plate 36. A through hole 39 into which a guide pin 38 is loosely fitted is formed in the support plate 36, and the guide pin 38 is inserted into the resin sleeve 3.
7 and a through hole 39, and both ends thereof are supported between the movable pulley half 3 and each inner side surface of the cover 5.

第1図は、プーリの回転力がベルトへ非伝達の状態、す
なわちクラッチオフの状態を示す。
FIG. 1 shows a state in which the rotational force of the pulley is not transmitted to the belt, that is, a state in which the clutch is off.

クランク軸27が回転すると、これとテーパー結合して
いる回転軸6が回転し、固定プーリ半体2及びスパイダ
ー7も一体に回転する。
When the crankshaft 27 rotates, the rotating shaft 6 which is tapered connected thereto rotates, and the fixed pulley half 2 and spider 7 also rotate together.

スパイダー7が回転すると、ウェイトローラ34に遠心
力が(動き、ローラ33を中心とする円弧五を矢印入方
向へ拡開上動する。このとき、ウェイトローラ34がカ
ム面15上を圧接摺動しながら、可動プーリ半体3を外
側矢印B方向へ付勢する。ウェイトローラ34がカム面
を圧接すると、可動プ〜り半体3が押され、カバー5も
スプリング31の力に抗して、図の右方(矢印B方向)
へ摺動前進しようとする。その結果、カバー5が回転軸
6の小径部上を、また、可動プーリ半体3が段部21上
をそれぞれ図の右方へ一体に摺動前進する。やがて、プ
ーリ而itがVベルト4に摺接し、Vベルト4に所定の
側圧をケえると、クラッチオフとなりVベルト4を回転
させる。■ベルト4は、この回転を図示を省略したドリ
ブンプーリに伝えてこれを回転させ、その結果後輪を駆
動させる。
When the spider 7 rotates, the centrifugal force moves on the weight roller 34, causing the circular arc 5 centered on the roller 33 to expand and move upward in the direction of the arrow. At this time, the weight roller 34 slides under pressure on the cam surface 15. At the same time, the movable pulley half 3 is urged outward in the direction of arrow B. When the weight roller 34 presses against the cam surface, the movable pulley half 3 is pushed, and the cover 5 is also pushed against the force of the spring 31. , right side of the figure (direction of arrow B)
Try to slide forward. As a result, the cover 5 slides forward over the small diameter portion of the rotation shaft 6, and the movable pulley half 3 slides forward over the stepped portion 21, respectively, to the right in the figure. When the pulley eventually comes into sliding contact with the V-belt 4 and applies a predetermined lateral pressure to the V-belt 4, the clutch is turned off and the V-belt 4 is rotated. (2) The belt 4 transmits this rotation to a driven pulley (not shown) to rotate it, thereby driving the rear wheels.

また、クランク軸27の回転が上れば、それに応じてウ
ェイトローラ34の拡開量も大きくなり、それだけ可動
プーリ半体3を右方へ押し出し、Vベルト4の回転半径
を大とする。この結果、ドリブンプーリ側の回転半径が
小さくなり、高速側へ変速される。
Furthermore, as the rotation of the crankshaft 27 increases, the amount of expansion of the weight roller 34 increases accordingly, pushing the movable pulley half 3 to the right and increasing the rotation radius of the V-belt 4. As a result, the rotation radius on the driven pulley side becomes smaller, and the speed is shifted to the high speed side.

逆に、エンジンの回転が落ちれば、逆作動して減速され
る。この結果無段変速がなされる。
Conversely, if the engine speed drops, the engine will act in reverse and slow down. As a result, continuously variable speed is achieved.

また、本実施例におけるカム面15は可動プーリ半体3
に形成されたリブを利用しており、しかもフライウェイ
ト8がカム面の全範囲を摺動するから、Vベルト4やフ
ライウェイト8から強い力を受けても局部変形に対して
十分に強度があり、11動プーリ半体3の耐久性を向上
させる。
In addition, the cam surface 15 in this embodiment is the movable pulley half 3
Moreover, since the flyweight 8 slides over the entire range of the cam surface, it has sufficient strength against local deformation even if strong force is applied from the V-belt 4 or the flyweight 8. This improves the durability of the 11-motion pulley half body 3.

[発明の効果] 本発明は、フライウェイトの拡開方向半径とVベルトの
拡開方向半径とを増減速範囲内において略一致させ、か
つ、摺動部材の軸受を可動プーリ半体及び力/ヘ一の2
ケ所に設けて2点支持させたので、軸受に偏荷重が作用
しにくくなり、その結果軸受の耐久性を著しく向丘させ
る。
[Effects of the Invention] The present invention makes the radius in the expansion direction of the flyweight and the radius in the expansion direction of the V-belt substantially coincide within the acceleration/deceleration range, and the bearing of the sliding member is connected to the movable pulley half and the force/ F1-2
Since the bearing is provided at two points and supported at two points, it becomes difficult for unbalanced loads to act on the bearing, and as a result, the durability of the bearing is greatly improved.

【図面の簡単な説明】[Brief explanation of drawings]

第1図は本発明の実施例の概略を示す概略図、第2図は
本発明の実施例の断面図である。 (符号の説明) R1@R2・R3・・・フライウェイトの拡開方向半径
、Ll・L2−L3・・・Vベルトの拡開方向半径、P
・・・支持点、■・・・ドライブプーリ、2・・・固定
プーリ半体、3・・・可動プーリ半体、4・・・Vベル
ト、5・・・カバー、6・・・回転軸、8・・・フライ
ウェイ)、11・・・プーリ而、15・・・カム面、1
2・19・・・軸受。 特許出願人  本田技研工業株式会社 特許出願人  株式会社 山田製作所 代 理 人 弁理士 小松清光
FIG. 1 is a schematic diagram showing an outline of an embodiment of the present invention, and FIG. 2 is a sectional view of the embodiment of the present invention. (Explanation of symbols) R1@R2/R3... Radius in the expanding direction of the flyweight, Ll/L2-L3... Radius in the expanding direction of the V-belt, P
... Support point, ■... Drive pulley, 2... Fixed pulley half, 3... Movable pulley half, 4... V-belt, 5... Cover, 6... Rotating shaft , 8... flyway), 11... pulley, 15... cam surface, 1
2.19...Bearing. Patent applicant Honda Motor Co., Ltd. Patent applicant Yamada Seisakusho Co., Ltd. Attorney Patent attorney Kiyomitsu Komatsu

Claims (1)

【特許請求の範囲】[Claims] 同一の回転軸上に設けられVベルトを挟持する、固定プ
ーリ半体と可動プーリ半体とからなり、該固定及び可動
の各プーリ半体はそれぞれVベルト接触面であるプーリ
面を有し、前記可動プーリ半体の背面には半径方向に延
るカム面を形成し、かつ、該カム面から離れて位置し前
記回転軸と一体回転する支持点を中心として該カム面と
接触しつつ拡開運動するフライウェイトを設け、前記可
動プーリ半体の背面側に、前記フライウェイトを覆うカ
バーを取付け一体化し、前記可動プーリ半体及び前記カ
バーのそれぞれに軸受を設け、該軸受を前記回転軸に摺
動可能に支持させるとともに、前記フライウェイトの拡
開方向半径と前記Vベルトの拡開方向半径とを増減速範
囲内において略同一としたことを特徴とするVベルト式
無段変速機のドライブプーリ。
Consisting of a fixed pulley half and a movable pulley half provided on the same rotation axis and sandwiching the V-belt, each of the fixed and movable pulley halves each having a pulley surface that is a V-belt contact surface, A radially extending cam surface is formed on the back surface of the movable pulley half, and the movable pulley half has a cam surface that extends in contact with the cam surface around a support point that is located away from the cam surface and rotates integrally with the rotating shaft. A flyweight that moves open is provided, a cover that covers the flyweight is attached and integrated with the back side of the movable pulley half, a bearing is provided on each of the movable pulley half and the cover, and the bearing is connected to the rotating shaft. A V-belt type continuously variable transmission characterized in that the flyweight is slidably supported by the flyweight, and the radius in the expansion direction of the flyweight and the radius in the expansion direction of the V-belt are substantially the same within an acceleration/deceleration range. drive pulley.
JP24983685A 1985-11-07 1985-11-07 Drive pulley of v-belt stepless speed change gear Pending JPS62110058A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP24983685A JPS62110058A (en) 1985-11-07 1985-11-07 Drive pulley of v-belt stepless speed change gear

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP24983685A JPS62110058A (en) 1985-11-07 1985-11-07 Drive pulley of v-belt stepless speed change gear

Publications (1)

Publication Number Publication Date
JPS62110058A true JPS62110058A (en) 1987-05-21

Family

ID=17198905

Family Applications (1)

Application Number Title Priority Date Filing Date
JP24983685A Pending JPS62110058A (en) 1985-11-07 1985-11-07 Drive pulley of v-belt stepless speed change gear

Country Status (1)

Country Link
JP (1) JPS62110058A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630650B2 (en) * 1975-08-18 1981-07-16

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5630650B2 (en) * 1975-08-18 1981-07-16

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