JPS63308268A - Automatic continuously variable transmission - Google Patents

Automatic continuously variable transmission

Info

Publication number
JPS63308268A
JPS63308268A JP13967487A JP13967487A JPS63308268A JP S63308268 A JPS63308268 A JP S63308268A JP 13967487 A JP13967487 A JP 13967487A JP 13967487 A JP13967487 A JP 13967487A JP S63308268 A JPS63308268 A JP S63308268A
Authority
JP
Japan
Prior art keywords
pulley
shaft
load
cams
continuously variable
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
JP13967487A
Other languages
Japanese (ja)
Inventor
Takao Iwasaki
岩崎　孝男
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to JP13967487A priority Critical patent/JPS63308268A/en
Publication of JPS63308268A publication Critical patent/JPS63308268A/en
Pending legal-status Critical Current

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  • Pulleys (AREA)
  • Transmissions By Endless Flexible Members (AREA)

Abstract

PURPOSE:To automatically change speed by conducting power transmission between a belt driving pulley and a shaft through cams having a certain angle and automatically changing the pulley diameter according to fluctuation of load. CONSTITUTION:One of a pair of cams 1 is fixed to a shaft, and the other thereof is fixed to the pulley 2. The pulley 2 is set on the shaft in such a manner as to be free. During no-load state, inclined cam surfaces of both cams 1 are brought into close contact with each other by springs having suitable force to keep the space of the pulley 2 most widely. As the rotating speed of the shaft is increased, both inclined surfaces of the cams 1 are slid against the springs to make the space of the pulley 2 narrower according to the rotating speed. Thus, continuously variable speed can be automatically attained according to fluctuation of load.

Description

【発明の詳細な説明】 本発明は無段変速装置に関する。[Detailed description of the invention] The present invention relates to a continuously variable transmission.

従来より無段変速機は色々の物が市販されているが、全
ては希望する回転数にセットし、常に一定回転を保つ型
式のものである。There are a variety of continuously variable transmissions available on the market, but all of them are of the type that can be set to a desired rotational speed and always maintain a constant rotational speed.

本発明に係わる変速装置は、負荷の変動に応じて自動的
にプーリー径が変わり自動的に変速される特殊な変速装
置である０本発明に係わる無段変速装置はプーリーから
シャフトへ、或はシャフトからプーリーへの動力の伝達
が、或る角度をもったカムを介して行なわれる事を特徴
とする。即ち、プーリーとシャフトとの間に介在するカ
ムが負荷の変動に応じてプーリーの間隔を！１１ｍする
役目をして、負荷の大きいときは低速に、負荷の軽い時
は高速回転となり、原動機には常にほぼ一定の負荷しか
かからない事を特徴とする。The transmission according to the present invention is a special transmission in which the diameter of the pulley changes automatically according to changes in load and the gear is automatically changed. It is characterized in that power is transmitted from the shaft to the pulley via a cam with a certain angle. In other words, the cam interposed between the pulley and the shaft adjusts the distance between the pulleys according to changes in load! The motor rotates at a low speed when the load is heavy, and at a high speed when the load is light, and is characterized by the fact that only a nearly constant load is always applied to the prime mover.

本発明に係わる無段変速機の基本的機構は、添付図面に
しめされるごとき者であって一対のカムの一方はシャフ
トに一方はプーリーに固定され、ぶ−判御はシャフトに
対してフリーの状態にセットされる０図面−１及び２は
回転を与えれば常にプーリーの間隔が挟まりプーリー径
が大となろうとするものであって、無負荷時はプーリー
間隔が最も　広く保持される用に適当な強さのスプリン
グがセットされる１図面３及び４は回転を与えると常に
プーリー間隔が広まり、プーリー径が小さく成ろうとす
る方であって、無負荷時はプーリー間隔が最も狭く保持
される用に適当な強さのスプリングがセットされる０本
発明に係わる無段変速装置は上記二つの型を組み合わせ
たものである。即ち図−４のプーリーを原動機、図−２
のプーリーを従動側としてセットして回転を与えると、
例えば始動時のごとく負荷の大きい時は、原動側のプー
リーは径が小さくなり、逆に従動側のプーリー径は大と
なって低速回転となる゛１回転があがって負荷が軽くな
って来ると１次第に原動側のプーリー径は大きく、従動
側のプーリー径は小さくなって高速回転になって来る。The basic mechanism of the continuously variable transmission according to the present invention is as shown in the attached drawings, in which one of a pair of cams is fixed to a shaft and the other to a pulley, and the control is free with respect to the shaft. In drawings 1 and 2, which are set in the state of 0, when rotation is applied, the gap between the pulleys is always narrowed and the pulley diameter tends to become large, and when there is no load, the gap between the pulleys is maintained at its widest. A spring of appropriate strength is set 1 In Figures 3 and 4, when rotation is applied, the pulley spacing always widens and the pulley diameter tends to become smaller, and when there is no load, the pulley spacing is maintained at its narrowest. The continuously variable transmission according to the present invention is a combination of the above two types, in which a spring of appropriate strength is set for the purpose. In other words, the pulley in Figure 4 is the prime mover, Figure 2
When the pulley is set as the driven side and rotation is applied,
For example, when the load is large, such as during startup, the diameter of the pulley on the driving side becomes smaller, and conversely, the diameter of the pulley on the driven side becomes larger, resulting in low speed rotation.As the rotation speed increases and the load becomes lighter, The diameter of the pulley on the driving side gradually increases, and the diameter of the pulley on the driven side gradually decreases, resulting in high speed rotation.

従って原動機への負荷は常にほぼ一定にたもたれる。言
うまでもなくこのプーリーは原動側のみ、或は従動側の
みにセットして使用することもできる。また、カムは片
側のプーリーのみにつけて、片側はシャフトに固定して
使用しても差し支えはない、プーリー間隔を保持するた
めのスプリングの変わりに、電磁力、油圧、空気圧、な
どを使用することもできる。Therefore, the load on the prime mover remains almost constant. Needless to say, this pulley can be used by being set only on the driving side or only on the driven side. Also, there is no problem in using the cam attached to only one pulley and the other fixed to the shaft. Instead of a spring to maintain the pulley distance, electromagnetic force, hydraulic pressure, pneumatic force, etc. can be used. You can also do it.

以上のと、とく本発明に係わる無段変速装置は、負荷の
変動に応じて自動的に無段変速する事が特徴であって、
この特性は、各種乗り物、′農業機械、などに利用して
価値の或る。実用性の高い発明である。In view of the above, the continuously variable transmission device according to the present invention is characterized in that it automatically continuously changes speed according to changes in load, and
This property is valuable for use in various vehicles, agricultural machinery, etc. This is a highly practical invention.

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

図面−１は図面−２の組み立て前の平面図で１図面−２
は完成図。 図中１はカム２はプーリーで或る。 図面−３は図面−４の組み立て前の平面図で、図面−４
はその完成図である。Drawing-1 is a plan view of Drawing-2 before assembly.1 Drawing-2
is the completed drawing. In the figure, 1 indicates a cam 2 which is a pulley. Drawing-3 is a plan view of Drawing-4 before assembly; Drawing-4
is the completed diagram.

Claims (1)

【特許請求の範囲】[Claims] ベルト駆動用プーリーとシャフトとの間の動力の伝達を
、或る角度をもったカムを介して行い、負荷のへんどう
に応じて自動的にプーリー径が変わって自動的に変速さ
れる自動無断変速装置Power is transmitted between the belt drive pulley and the shaft via a cam with a certain angle, and the diameter of the pulley changes automatically depending on the load, automatically changing the speed. transmission
JP13967487A 1987-06-05 1987-06-05 Automatic continuously variable transmission Pending JPS63308268A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13967487A JPS63308268A (en) 1987-06-05 1987-06-05 Automatic continuously variable transmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13967487A JPS63308268A (en) 1987-06-05 1987-06-05 Automatic continuously variable transmission

Publications (1)

Publication Number Publication Date
JPS63308268A true JPS63308268A (en) 1988-12-15

Family

ID=15250777

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13967487A Pending JPS63308268A (en) 1987-06-05 1987-06-05 Automatic continuously variable transmission

Country Status (1)

Country Link
JP (1) JPS63308268A (en)

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