JPH01295066A - Belt type continuously variable speed change mechanism - Google Patents
Belt type continuously variable speed change mechanismInfo
- Publication number
- JPH01295066A JPH01295066A JP12659388A JP12659388A JPH01295066A JP H01295066 A JPH01295066 A JP H01295066A JP 12659388 A JP12659388 A JP 12659388A JP 12659388 A JP12659388 A JP 12659388A JP H01295066 A JPH01295066 A JP H01295066A
- Authority
- JP
- Japan
- Prior art keywords
- speed change
- pulley
- continuously variable
- belt
- clutch mechanism
- 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
- 230000005540 biological transmission Effects 0.000 claims abstract description 30
- 241000209094 Oryza Species 0.000 description 4
- 235000007164 Oryza sativa Nutrition 0.000 description 4
- 235000009566 rice Nutrition 0.000 description 4
- 230000007423 decrease Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
Landscapes
- Transmissions By Endless Flexible Members (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、乗用田植機等に装備されるベルト無段変速機
構に係り、詳しくは変速用プーリに変速カム機構とクラ
ッチ機構とを設けたものでありながら、変速用プーリ間
に懸回される梗１ベルトを機体の中央側に近づけて配設
することができるベルト無段変速機構に関するものであ
る。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a continuously variable belt transmission mechanism that is installed in a riding rice transplanter, etc., and more specifically, a belt continuously variable transmission mechanism that is equipped with a speed change pulley and a clutch mechanism. The present invention relates to a continuously variable belt transmission mechanism in which a belt that is suspended between transmission pulleys can be disposed close to the center of the machine body.
［従来の技術］
従来のベルト無段変速機構には、スプリングで押圧され
る移動ブーりと固定プーリ等からなる変速用の割りプー
リを、エンジンの出力軸とミッションケースの入力軸と
に設け、一方の変速用ブーりにクラッチ機構を設けたも
のが知られている。[Prior Art] In a conventional belt continuously variable transmission mechanism, a split pulley for speed change consisting of a moving bobbin pressed by a spring, a fixed pulley, etc. is provided on the output shaft of the engine and the input shaft of the transmission case. It is known that a clutch mechanism is provided on one of the gear shift levers.
［本発明が解決しようとする課題］
この種のベルト無段変速機構では、動力を断続する多板
クラッチを、変速用プーリの固定プーリとミッションケ
ースとの対向間に設け、移動プーリを゛押圧するスプリ
ングを、移動プーリの外側に設けるのが一般的である。[Problems to be solved by the present invention] In this type of belt continuously variable transmission mechanism, a multi-plate clutch that connects and disconnects power is provided between the stationary pulley of the speed change pulley and the transmission case, and the movable pulley is pressed. Generally, a spring is provided outside the moving pulley.
ところが多板クラッチとスプリングは、いずれも軸方向
に長い取付スペースが必要なうえ、変速用の割プーリは
、スプリングで押圧された移動プーリが固定プーリ上を
スライドするようにしているので、変速用プーリの取付
にも軸方向に長いスペースが必要となり、このため変速
用プーリを取付けな入力軸等が長くなって変速ベルトの
懸回位置がミッションケースから大きく突出する詐りで
なく、入力軸の強度が不足する等の問題を生じ、しかも
、他の卯品との取合せの関係から全体の構成が血中１に
なるという不都合があった。However, multi-disc clutches and springs both require a long installation space in the axial direction, and the split pulley for speed change has a movable pulley pressed by a spring that slides on a fixed pulley, so it is difficult to use the split pulley for speed change. Installing the pulley also requires a long space in the axial direction, so it is difficult to install the speed change pulley. There were problems such as insufficient strength, and furthermore, due to the combination with other products, the overall composition was inconvenient.
本発明は、上記の如き問題点を解消すべく ＩＩＪ案さ
れたものであって、変速用プーリにクラッチ機構を設け
たものでありながら、全体をコンパクトに構成して変速
用プーリに懸回される変速ベルトを機体の中央側に近接
した位置に配設することができるベルト無段変速機構を
提供することを目的課題としたものである。The present invention was proposed by IIJ in order to solve the above-mentioned problems, and although the clutch mechanism is provided on the speed change pulley, the entire structure is compact and the clutch mechanism is suspended from the speed change pulley. An object of the present invention is to provide a continuously variable belt transmission mechanism in which a variable speed belt can be disposed close to the center of a machine body.
［課題を解決するための手段］
上記の課題を解決するため本発明が講じた技術手段は、
エンジンの出力軸゛とミッションケースの入力軸に、変
速ベルトが懸回される変速用プーリを設けた無段変速機
構において、一方の変速用グーりと機体側との対向間に
無段変連用の変速カムｍ構を設けると共に、上記変速プ
ーリの外側部には動力を断続するクラッチ機構を設けた
ことを特徴とするらのである。[Means for solving the problems] The technical means taken by the present invention to solve the above problems are as follows:
In a continuously variable transmission mechanism in which a speed change pulley around which a speed change belt is suspended is provided between the output shaft of the engine and the input shaft of the transmission case, a continuously variable transmission is provided between one speed change pulley and the opposite side of the aircraft. The present invention is characterized in that it is provided with a speed change cam m structure, and a clutch mechanism that connects and disconnects the power is provided on the outer side of the speed change pulley.
［発明の作用］
したがって本発明によれば、変速カム機構の操作により
、変速ベルトを懸回した変速用プーリがエンジンからの
の動力を無段変速してミッションケースの入力軸に伝達
し、クラッチ機構を操作すれば伝達される動力を断続す
ることができる。そして、一方の変速用グーりと機体側
との対向間には変速カム機構のみが設けられているので
、変速用プーリをａ＃の中央側に近接させて変速ベルト
を懸回することができる。しがも変速用プーリの外側部
に設けたクラッチ機構は、その内部空間を利用して変速
用プーリに近接させることができて変速機構全体をコン
パクトにすることができる。[Operation of the invention] Therefore, according to the present invention, by operating the speed change cam mechanism, the speed change pulley around which the speed change belt is suspended transmits the power from the engine to the input shaft of the transmission case in a continuously variable manner, and the clutch By operating the mechanism, the transmitted power can be interrupted or interrupted. Since only the speed change cam mechanism is provided between one speed change pulley and the opposite side of the aircraft, the speed change pulley can be brought close to the center of a# and the speed change belt can be hung around it. . However, the clutch mechanism provided on the outside of the speed change pulley can be brought close to the speed change pulley by utilizing its internal space, and the entire speed change mechanism can be made compact.
［実施例］
次に本発明の実施例を添付した図面に基づいて詳述する
。ｌは乗用田植機であって、前輪２および後？！３を備
えた機体フレーム４にエンジン５が搭載され、その後方
に運転操作部６が設けられており、機体の後部には苗植
付装置７がリンク機構８を介して昇降自在に連結されて
いる。そしてエンジン５の出力軸９と、ミッションケー
ス１ｏがら突出した入力軸１１間にベルト無段変速機構
１２が設けられている。[Example] Next, an example of the present invention will be described in detail based on the attached drawings. 1 is a riding rice transplanter with 2 front wheels and 2 rear wheels. ! An engine 5 is mounted on a fuselage frame 4 equipped with an engine 3, and a driving operation section 6 is provided at the rear of the engine 5. A seedling planting device 7 is connected to the rear of the fuselage via a link mechanism 8 so as to be able to rise and fall freely. There is. A belt continuously variable transmission mechanism 12 is provided between the output shaft 9 of the engine 5 and the input shaft 11 protruding from the transmission case 1o.
上記ベルト無段変速機構１２は、第１図に示すように、
固定プーリ１３と、スプリング１４で付勢された移動プ
ーリ１５とからなる駆動側の変速用プーリ１６が出力軸
９に設けられており、一方、入力軸１１にはベアリング
１７を介してボス部１８が空転自在に装着されていて、
該ボス部１８のスプラインにそれぞれ係合する移動プー
リ１９と固定グー９２０とによって従動側の変速用プー
リ２１が構成されている。As shown in FIG. 1, the belt continuously variable transmission mechanism 12 includes:
A drive-side speed change pulley 16 consisting of a fixed pulley 13 and a movable pulley 15 biased by a spring 14 is provided on the output shaft 9, while a boss portion 18 is provided on the input shaft 11 via a bearing 17. is attached so that it can spin freely,
The movable pulley 19 and the fixed pulley 920, which respectively engage with the splines of the boss portion 18, constitute the driven-side speed change pulley 21.
２２は上記駆動側の変速用プーリ１６と従動側の変速用
プーリ２１に懸回された変速ベルトである。Reference numeral 22 denotes a speed change belt that is wound around the drive side speed change pulley 16 and the driven side speed change pulley 21.
上記従動側の変速用プーリ２１は変速カムｔａ楕とクラ
ッチ機構の作動によりエンジン５からの動力を変速して
伝達し、あるいは断続するものであるが、本発明では移
動プーリ１９と機＃側のミッションケース１０との対向
間にベアリング２３を介して支持された変速カム機構２
４のみが設けられていて、運転操作部６に設けた変速レ
バー２５の操作により連結ロッド２６を介して回動した
変速カム２７が移動プーリ１９を押圧して変速用プーリ
２１の有効径を変イヒさせる。The speed change pulley 21 on the driven side changes the speed and transmits the power from the engine 5, or connects it intermittently, by the operation of the speed change cam and the clutch mechanism, but in the present invention, the moving pulley 19 and the drive side A speed change cam mechanism 2 supported via a bearing 23 while facing the mission case 10
4 is provided, and a speed change cam 27 rotated via a connecting rod 26 by operating a speed change lever 25 provided in the operation operation section 6 presses the movable pulley 19 to change the effective diameter of the speed change pulley 21. Make me go crazy.
また、固定プーリ２０の外側部には、フェーシング、フ
リクションプレート等からなる多板クラッチ機構２８が
入力軸１１のスプラインに係合して設けられており、入
力軸１１の先端部にはベアリング２９、スリーブ３０を
介して固定カム３１および移動カム３２が設けられてい
て、移動カム３２を回動操作すると、クラッチ側に移動
した移動カム３２がベアリング３３を介してプレート３
４を押圧してクラッチ機構２８を軌続するようになって
いる。そして上記クラッチ機構２８は、その内部に形成
されている空間部３５内に、固定ブー９２０の軸方向に
突出した取付部３６をラップ状に挿入することにより、
固定プーリ２０に向って可及的に近接した位置に配設さ
れている。Furthermore, a multi-plate clutch mechanism 28 consisting of facings, friction plates, etc. is provided on the outside of the fixed pulley 20 and engages with the splines of the input shaft 11, and a bearing 29, A fixed cam 31 and a movable cam 32 are provided via a sleeve 30, and when the movable cam 32 is rotated, the movable cam 32 that has moved toward the clutch side is moved to the plate 3 via a bearing 33.
4 to engage the clutch mechanism 28. The clutch mechanism 28 is constructed by inserting the mounting portion 36 that protrudes in the axial direction of the fixed boo 920 into the space 35 formed inside the clutch mechanism 28 in a wrap-like manner.
It is arranged at a position as close as possible to the fixed pulley 20.
３７は出力軸９のｍ体側に設けた油圧駆動用等の駆動プ
ーリ、３８はバランススプリングである。37 is a drive pulley for hydraulic drive, etc. provided on the m-body side of the output shaft 9, and 38 is a balance spring.
上記の如き構成において、エンジン５の動力は出力軸９
に設けた変速用グー９１６から入力軸１１に設けた変速
用プーリ２１に変速ベルト２２を介して伝達される。こ
のとき変速レバー２５を操作すれば、変速カム２７が回
動して移動ブー９１９を押圧し、変速プーリ２１の有効
径を変化させ、これに件って変速ベルト２２の張力が増
減して出力軸９に設けた変速用ブー９１６の有効径も変
化するので、伝達される動力を無段変速することができ
る。またクラッチ機構２８の移動カム３２を回動操作す
れば、移動する移動カム３２がベアリング３３を介して
プレート３４を押圧するので、入力軸１１に伝達される
動力を断続することができる。そして変速用プーリ２１
とミッションケース１０との対向間には変速カムａｉｍ
２４のみが設けられているので、変速用プーリ２１を機
体の中心側に近接させることができて、変速用プーリ１
６．２１間に懸回される変速ベルト２２が乗用田植ｔＩ
ｉ１の側方に大きく突出することはない、また変速用プ
ーリ２１の外側部に設けたクラッチ機構２８は、内部の
空間３５を利用して変速用プーリ２１に可及的に近接さ
せることができるので、入力軸１１が長くなって強度が
不足するような問題を生ずることはない。In the above configuration, the power of the engine 5 is transmitted to the output shaft 9
The signal is transmitted from the gear shift gear 916 provided on the input shaft 11 to the gear shift pulley 21 provided on the input shaft 11 via the gear shift belt 22 . If the shift lever 25 is operated at this time, the shift cam 27 rotates and presses the moving boob 919, changing the effective diameter of the shift pulley 21, which increases or decreases the tension of the shift belt 22 and outputs. Since the effective diameter of the speed change boo 916 provided on the shaft 9 also changes, the transmitted power can be continuously variable. Further, when the moving cam 32 of the clutch mechanism 28 is rotated, the moving cam 32 presses the plate 34 via the bearing 33, so that the power transmitted to the input shaft 11 can be interrupted. And speed change pulley 21
A speed change cam aim is located between the transmission case 10 and the transmission case 10
Since only the gear shift pulley 24 is provided, the shift pulley 21 can be brought closer to the center of the aircraft, and the shift pulley 1
6. The speed change belt 22 suspended between 21 and 21 is
The clutch mechanism 28, which does not protrude significantly to the side of i1, and which is provided on the outside of the shift pulley 21, can be brought as close to the shift pulley 21 as possible by utilizing the internal space 35. Therefore, problems such as the input shaft 11 becoming long and lacking in strength do not occur.
［発明の効果］
これを要するに本発明は、エンジンの出力軸とミッショ
ンケースの入力軸に、変速ベルトが懸回される変速用プ
ーリを設けた無段変速機構において、一方の変速用プー
リと機体側との対向間に無段変速用の変速カム機構を設
けると共に、上記変速グーりの外側部には動力を断続す
るクラッチ機構を設けたから、変速用プーリにクラッチ
機構を設けたものでありながら、変速用グーりと機ｔ＊
側との対向間には、変速カム機構のみが設けられている
ので、変速用プーリに懸回される伝動ベルトを機体の中
央側に近接させることができ、しかも変速用プーリの外
側部に設けたクラッチ機構は、内部の空間を利用して変
速用プーリに近接させることができるので変速機構全体
をコンパクトにすることができて、特に乗用田植機等で
は、伝動ベルトが明方に大きく突出しない適・正な構成
とすることができるものである。[Effects of the Invention] In short, the present invention provides a continuously variable transmission mechanism in which a speed change pulley around which a speed change belt is wound is provided on the output shaft of an engine and an input shaft of a transmission case. A variable speed cam mechanism for continuously variable speed is provided between the opposing sides, and a clutch mechanism is provided on the outer side of the speed change groove to cut and shut off the power. , Gear shifter t*
Since only the speed change cam mechanism is provided between the opposing sides, the transmission belt that is suspended around the speed change pulley can be placed close to the center of the aircraft, and the transmission belt that is attached to the outside of the speed change pulley can be placed close to the center of the machine. Since the clutch mechanism can be placed close to the speed change pulley by utilizing the internal space, the entire speed change mechanism can be made compact, and the transmission belt does not protrude too much into the light, especially in riding rice transplanters. It is possible to have an appropriate and proper configuration.
図面は本発明に係るベルト無段変速機構の一実施例を示
すものであって、第１図はＭＩ！断面図、第２図は側面
図、第３図は本発明のベルト無段変速機構を装備した乗
用田植機の全体側面図である。
図中、５・・・エンジン、９・・・出力軸、１０・・・
ミッションケース、１１・・・人力軸、１６，２．Ｌ・
・・変速用プーリ、２２・・・変速ベルト、２４・・・
変速カム機構、２８・・・クラッチ機構である。
特許出願人 三菱農機株式会社
代理人 弁理士 稲 葉 昭 治 ′１１−ＱThe drawings show an embodiment of the belt continuously variable transmission mechanism according to the present invention, and FIG. 1 shows MI! 2 is a sectional view, FIG. 2 is a side view, and FIG. 3 is an overall side view of a riding rice transplanter equipped with the continuously variable belt transmission mechanism of the present invention. In the figure, 5...engine, 9...output shaft, 10...
Mission case, 11...Human power axis, 16,2. L・
...Shift pulley, 22...Shift belt, 24...
Shift cam mechanism, 28...clutch mechanism. Patent applicant Mitsubishi Agricultural Machinery Co., Ltd. Agent Patent attorney Shoji Inaba '11-Q
Claims (1)
ベルトが懸回される変速用プーリを設けた無段変速機構
において、一方の変速用プーリと機体側との対向間に無
段変速用の変速カム機構を設けると共に、上記変速プー
リの外側部には動力を断続するクラッチ機構を設けたこ
とを特徴とするベルト無段変速機構。In a continuously variable transmission mechanism in which a speed change pulley around which a speed change belt is wound is provided between the output shaft of the engine and the input shaft of the transmission case, a speed change for continuously variable speed is provided between one speed change pulley and the aircraft side facing each other. A continuously variable belt transmission mechanism, characterized in that a cam mechanism is provided, and a clutch mechanism is provided on the outside of the speed change pulley to connect and disconnect power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63126593A JPH0792125B2 (en) | 1988-05-23 | 1988-05-23 | Belt continuously variable transmission |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63126593A JPH0792125B2 (en) | 1988-05-23 | 1988-05-23 | Belt continuously variable transmission |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01295066A true JPH01295066A (en) | 1989-11-28 |
| JPH0792125B2 JPH0792125B2 (en) | 1995-10-09 |
Family
ID=14939024
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63126593A Expired - Lifetime JPH0792125B2 (en) | 1988-05-23 | 1988-05-23 | Belt continuously variable transmission |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0792125B2 (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6394351U (en) * | 1986-12-09 | 1988-06-17 |
-
1988
- 1988-05-23 JP JP63126593A patent/JPH0792125B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6394351U (en) * | 1986-12-09 | 1988-06-17 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0792125B2 (en) | 1995-10-09 |
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