JPH04248055A - Power transmission structure of working vehicle - Google Patents
Power transmission structure of working vehicleInfo
- Publication number
- JPH04248055A JPH04248055A JP90691A JP90691A JPH04248055A JP H04248055 A JPH04248055 A JP H04248055A JP 90691 A JP90691 A JP 90691A JP 90691 A JP90691 A JP 90691A JP H04248055 A JPH04248055 A JP H04248055A
- Authority
- JP
- Japan
- Prior art keywords
- main shaft
- continuously variable
- power
- type continuously
- friction type
- 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 title claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 67
- 230000008859 change Effects 0.000 claims description 4
- 230000000694 effects Effects 0.000 description 2
- 210000001015 abdomen Anatomy 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
Landscapes
- Friction Gearing (AREA)
- Transmission Devices (AREA)
Abstract
Description
【０００１】0001
【産業上の利用分野】本発明は、農用トラクタや芝刈機
等の作業車における動力伝達構造に関し、詳しくは、入
力された回転動力をテーパコーンを利用して無段に変速
する摩擦式無段変速機構を、その変速動力を主軸に伝達
可能に装備すると共に、前記主軸と平行に配備された中
間軸と、前記主軸とにわたって動力伝達しかつその回転
動力を正逆転切換できる正逆転切換機構を設け、さらに
、前記主軸と平行に配備された車軸のデフ機構と、前記
中間軸とを動力伝達可能に連係した作業車における動力
伝達構造に関する。[Industrial Application Field] The present invention relates to a power transmission structure for work vehicles such as agricultural tractors and lawn mowers, and more specifically to a friction type continuously variable transmission that uses a taper cone to continuously change the speed of input rotational power. The mechanism is equipped with a mechanism capable of transmitting the speed change power to the main shaft, and is provided with an intermediate shaft disposed parallel to the main shaft and a forward/reverse switching mechanism capable of transmitting power across the main shaft and switching the rotating power between forward and reverse directions. The present invention further relates to a power transmission structure for a working vehicle in which a differential mechanism of an axle disposed parallel to the main shaft and the intermediate shaft are linked to enable power transmission.
【０００２】0002
【従来の技術】従来、この種の作業車における動力伝達
構造にあっては、例えば、図５及び図６に示すように、
摩擦式無段変速機構４１、正逆転切換機構４２及びデフ
機構４３を１つのケース４４に内装すると共に、正逆転
切換機構４２を摩擦式無段変速機構４１の主軸４５への
出力がわに位置させて設け、中間軸４６からデフ機構４
３への伝動機構４７を中間軸４６における正逆転切換機
構４２に対して摩擦式無段変速機構４１より離れるがわ
に位置させていた。2. Description of the Related Art Conventionally, in the power transmission structure of this type of work vehicle, for example, as shown in FIGS. 5 and 6,
The friction type continuously variable transmission mechanism 41, the forward/reverse switching mechanism 42, and the differential mechanism 43 are housed in one case 44, and the forward/reverse switching mechanism 42 is located beside the output to the main shaft 45 of the friction type continuously variable transmission mechanism 41. from the intermediate shaft 46 to the differential mechanism 4.
The transmission mechanism 47 for transmission to the transmission mechanism 3 is located on the side of the forward/reverse switching mechanism 42 on the intermediate shaft 46 away from the friction type continuously variable transmission mechanism 41.
【０００３】0003
【発明が解決しようとする課題】従って、上記従来構造
のものでは、動力伝達構造を正面視で摩擦式無段変速機
構４１、正逆転切換機構４２、デフ機構４３が左右に順
に並ぶよう設けられることから、その左右幅が大きなも
のとなって、作業車に動力伝達構造を配設するための空
間を大きく確保しなければならず、小型化が要求される
作業車において、動力伝達構造の小型化する点で改善の
余地があった。[Problems to be Solved by the Invention] Therefore, in the conventional structure described above, when the power transmission structure is viewed from the front, the friction type continuously variable transmission mechanism 41, the forward/reverse switching mechanism 42, and the differential mechanism 43 are arranged in order from left to right. Therefore, the left and right width of the vehicle is large, and a large space must be secured for arranging the power transmission structure in the work vehicle. There was room for improvement in terms of compatibility.
【０００４】本発明は、上記実情に鑑みてなされたもの
であって、簡単な改造で構造全体をコンパクトに構成で
きる作業車における動力伝達構造の提供を目的とする。The present invention has been made in view of the above-mentioned circumstances, and an object of the present invention is to provide a power transmission structure for a working vehicle whose entire structure can be made compact by simple modification.
【０００５】[0005]
【課題を解決するための手段】本発明にかかる作業車に
おける動力伝達構造は、上記目的を達成するために、冒
記構造のものにおいて、前記摩擦式無段変速機構と前記
デフ機構とを、前記正逆転切換機構に対して、前記主軸
の軸心方向において同じがわに配設してあることを特徴
とするものであって、かかる構成から次の作用・効果を
奏する。[Means for Solving the Problems] In order to achieve the above object, the power transmission structure for a work vehicle according to the present invention has the above-mentioned structure, and includes the friction type continuously variable transmission mechanism and the differential mechanism. The present invention is characterized in that it is disposed on the same side of the forward/reverse switching mechanism in the axial direction of the main shaft, and this configuration provides the following functions and effects.
【０００６】[0006]
【作用】すなわち、摩擦式無段変速機構とデフ機構とを
、正逆転切換機構に対して、主軸の軸心方向において同
じがわに配設してあるから、正面視で摩擦式無段変速機
構とデフ機構とを重合するように配置できるので、それ
だけ動力伝達構造の左右幅を小さなものにできる。[Operation] In other words, since the friction type continuously variable transmission mechanism and the differential mechanism are arranged on the same side in the axial direction of the main shaft with respect to the forward/reverse switching mechanism, the friction type continuously variable transmission mechanism can be seen from the front. Since the mechanism and the differential mechanism can be arranged so as to overlap, the lateral width of the power transmission structure can be reduced accordingly.
【０００７】[0007]
【発明の効果】従って、正逆転切換機構に対してデフ機
構を摩擦式無段変速機構と同じがわに配設するという簡
単な改造で、動力伝達構造左右幅を小さくでき、作業車
における動力伝達構造の設置空間も小さなものとなって
、他物を設置する余裕が生じると共に、作業車全体の小
型化も図ることができて、有益なものとなるに至った。[Effects of the Invention] Therefore, by simply modifying the forward/reverse switching mechanism by arranging the differential mechanism on the same side as the friction type continuously variable transmission mechanism, the horizontal width of the power transmission structure can be reduced, and the power of the work vehicle can be reduced. The installation space for the transmission structure has also become smaller, which provides room for installing other items, and the overall size of the working vehicle can be reduced, which has become beneficial.
【０００８】[0008]
【実施例】以下、本発明の実施例を図面に基づいて説明
する。Embodiments Hereinafter, embodiments of the present invention will be explained based on the drawings.
【０００９】図４に、本発明にかかる作業車の一例とし
ての芝刈機を示している。この芝刈機は、前部に縦軸型
のエンジン１を備え、中央部に操縦部２を配置し、後部
に動力伝達装置Ａを固設した機体３を、一対の前車輪４
及び後車輪５で走行可能に構成すると共に、機体下腹部
にモーア６を吊設している。動力伝達装置Ａとモーア６
とはいずれもベルト伝動機構７，８によってエンジン１
の動力が入力されるように構成している。FIG. 4 shows a lawn mower as an example of a working vehicle according to the present invention. This lawn mower is equipped with a vertical shaft type engine 1 at the front, a control section 2 arranged at the center, a body 3 with a power transmission device A fixed at the rear, and a pair of front wheels 4.
The aircraft is configured to be able to run on rear wheels 5 and has a mower 6 suspended from the lower abdomen of the aircraft. Power transmission device A and mower 6
In both cases, the engine 1 is driven by the belt transmission mechanisms 7 and 8.
It is configured so that the power is input.
【００１０】図１及び図２に示すように、動力伝達装置
Ａは、ベルト伝動機構７によってエンジン１の動力を入
力する動力入力部９、入力された動力を無段に変速する
テーパコーン１０利用の摩擦式無段変速機構１１、この
摩擦式無段変速機構１１の出力の回転方向を切換え可能
な正逆転切換機構１２、及びデフ機構１３等を備えて構
成すると共に、摩擦式無段変速機構１１、正逆転切換機
構１２、及びデフ機構１３は、１つのケース１４に内装
している。As shown in FIGS. 1 and 2, the power transmission device A includes a power input section 9 that inputs the power of the engine 1 through a belt transmission mechanism 7, and a taper cone 10 that uses a taper cone 10 to continuously change the speed of the input power. The friction type continuously variable transmission mechanism 11 is configured to include a friction type continuously variable transmission mechanism 11, a forward/reverse switching mechanism 12 capable of switching the rotational direction of the output of the friction type continuously variable transmission mechanism 11, a differential mechanism 13, etc. , the forward/reverse switching mechanism 12 , and the differential mechanism 13 are housed in one case 14 .
【００１１】動力入力部９は、入力プーリ１５を備えた
縦軸１６と、摩擦式無段変速機構１１の入力回転体１７
とをベベルギヤ機構で連動させるように構成している。The power input section 9 includes a vertical shaft 16 equipped with an input pulley 15 and an input rotating body 17 of the friction type continuously variable transmission mechanism 11.
and are configured to be interlocked by a bevel gear mechanism.
【００１２】摩擦式無段変速機構１１は、ケース１４に
回動自在に支持された主軸１８の周囲に、この主軸１８
と同心状に配設される入力回転体１７によって主軸１８
の軸心を中心として公転駆動される複数の自転可能なテ
ーパコーン１０を配備し、これらテーパコーン１０に接
触して駆動回転される出力回転体１９を主軸１８に取付
けると共に、それらテーパコーン１０にわたって接触状
態で前記軸心方向にシフト可能に変速部材２０を設けて
構成している。テーパコーン１０は、カム機構２１によ
って押圧付勢される出力回転体１９と押圧接触し、その
反力をディスク状のコーンサポート２２によって受けて
いると共に、入力回転体１７に取付けられた外枠２３と
、この外枠２３に連結された内枠２４とによってキャリ
ア２５を形成し、外枠２３と内枠２４とに架設した支軸
２６にテーパコーン１０を自転自在に支持している。The friction type continuously variable transmission mechanism 11 is arranged around a main shaft 18 rotatably supported by a case 14.
The input rotating body 17 is arranged concentrically with the main shaft 18.
A plurality of rotatable taper cones 10 are provided, which are driven to revolve around the axis of A transmission member 20 is provided to be shiftable in the axial direction. The tapered cone 10 is in pressure contact with the output rotary body 19 which is biased by the cam mechanism 21, and receives the reaction force by the disk-shaped cone support 22, and is in contact with the outer frame 23 attached to the input rotary body 17. A carrier 25 is formed by an inner frame 24 connected to the outer frame 23, and the taper cone 10 is rotatably supported on a support shaft 26 installed between the outer frame 23 and the inner frame 24.
【００１３】正逆転切換機構１２は、主軸１８と、一端
にブレーキ装置２７を備えた中間軸２８とにわたって構
成してあって、詳しくは、主軸１８の駆動ギヤ２９と中
間軸２８の従動ギヤ３０とで逆転伝動し、主軸１８の駆
動スプロケット３１と中間軸２８の従動スプロケット３
２とに張設したチェーン３３で正転伝動するように設定
してあり、シフト回転具３４の従動ギヤ３０と従動スプ
ロケット３２との択一連結によって中間軸２８の回転方
向を選択できるように構成している。The forward/reverse switching mechanism 12 is constructed over a main shaft 18 and an intermediate shaft 28 having a brake device 27 at one end. The driving sprocket 31 of the main shaft 18 and the driven sprocket 3 of the intermediate shaft 28
The intermediate shaft 28 is configured to transmit forward rotation by a chain 33 stretched between the intermediate shaft 28 and the intermediate shaft 28, and the direction of rotation of the intermediate shaft 28 can be selected by a selective connection between the driven gear 30 of the shift rotary tool 34 and the driven sprocket 32. are doing.
【００１４】デフ機構１３は、左右の車軸３５，３５を
デフキャリア３６内部で嵌合すると共に、中間軸２８に
おける正逆転切換機構１２に対して摩擦式無段変速機構
１１の位置するがわの伝動ギヤ３７と、デフキャリア３
６に設けた受動ギヤ３８とを歯合させて構成している。The differential mechanism 13 fits the left and right axles 35, 35 inside the differential carrier 36, and also connects the forward/reverse switching mechanism 12 on the intermediate shaft 28 to the side where the friction type continuously variable transmission mechanism 11 is located. Transmission gear 37 and differential carrier 3
It is constructed by meshing with a passive gear 38 provided at 6.
【００１５】又、前記出力軸１８、中間軸２８及び車軸
３５，３５は、図３に示すように、前から順に同一の水
平面上に沿って互いに平行に配置されている。Further, as shown in FIG. 3, the output shaft 18, the intermediate shaft 28, and the axles 35, 35 are arranged parallel to each other along the same horizontal plane in order from the front.
【００１６】上記構成により、図１及び図２に示すよう
に、摩擦式無段変速機構１１とデフ機構１３とは前後方
向視で重合するように配設されるので、ケース１４の左
右幅は、大体において、摩擦式無段変速機構１１と正逆
転切換機構１２を配置できる幅に設定されている。With the above configuration, as shown in FIGS. 1 and 2, the friction type continuously variable transmission mechanism 11 and the differential mechanism 13 are arranged so as to overlap when viewed in the longitudinal direction, so that the left and right width of the case 14 is Generally, the width is set such that the friction type continuously variable transmission mechanism 11 and the forward/reverse switching mechanism 12 can be arranged therein.
【００１７】尚、特許請求の範囲の項に図面との対照を
便利にするために符号を記すが、該記入により本発明は
添付図面の構成に限定されるものではない。Although reference numerals are written in the claims for convenience of comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.
【図１】動力伝達構造の入力側構造を示す展開断面図[Figure 1] Exploded cross-sectional view showing the input side structure of the power transmission structure
【
図２】動力伝達構造の出力側構造を示す展開断面図[
Figure 2: Exploded cross-sectional view showing the output side structure of the power transmission structure
【図
３】動力伝達構造を示す側面図[Figure 3] Side view showing power transmission structure
【図４】芝刈機を示す全体側面図[Figure 4] Overall side view showing the lawn mower
【図５】従動の動力伝達構造の入力側構造を示す展開断
面図[Figure 5] Exploded cross-sectional view showing the input side structure of the driven power transmission structure
【図６】従動の動力伝達構造の出力側構造を示す展開断
面図[Figure 6] Exploded cross-sectional view showing the output side structure of the driven power transmission structure
１０ テーパコーン １１ 摩擦式無段変速機構 １２ 正逆転切換機構 １３ デフ機構 １８ 主軸 ２８ 中間軸 ３５ 車軸 10 Taper cone 11 Friction type continuously variable transmission mechanism 12 Forward/reverse switching mechanism 13. Differential mechanism 18 Main shaft 28 Intermediate shaft 35 Axle
Claims (1)
１０）を利用して無段に変速する摩擦式無段変速機構（
１１）を、その変速動力を主軸（１８）に伝達可能に装
備すると共に、前記主軸（１８）と平行に配備された中
間軸（２８）と、前記主軸（１８）とにわたって動力伝
達しかつその回転動力を正逆転切換できる正逆転切換機
構（１２）を設け、さらに、前記主軸（１８）と平行に
配備された車軸（３５）のデフ機構（１３）と、前記中
間軸（２８）とを動力伝達可能に連係した作業車におけ
る動力伝達構造において、前記摩擦式無段変速機構（１
１）と前記デフ機構（１３）とを、前記正逆転切換機構
（１２）に対して、前記主軸（１８）の軸心方向におい
て同じがわに配設してあることを特徴とする作業車にお
ける動力伝達構造。[Claim 1] The input rotational power is transmitted through a taper cone (
Friction type continuously variable transmission mechanism (10) that continuously changes speed using
11) so as to be able to transmit its speed change power to the main shaft (18), and transmit power between the intermediate shaft (28) arranged parallel to the main shaft (18) and the main shaft (18). A forward/reverse switching mechanism (12) capable of switching rotational power between forward and reverse directions is provided, and a differential mechanism (13) for an axle (35) disposed parallel to the main shaft (18) and the intermediate shaft (28) are provided. In the power transmission structure of a working vehicle that is linked to enable power transmission, the friction type continuously variable transmission mechanism (1
1) and the differential mechanism (13) are arranged on the same side in the axial direction of the main shaft (18) with respect to the forward/reverse switching mechanism (12). power transmission structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3000906A JP2834335B2 (en) | 1991-01-09 | 1991-01-09 | Power transmission structure in work vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3000906A JP2834335B2 (en) | 1991-01-09 | 1991-01-09 | Power transmission structure in work vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04248055A true JPH04248055A (en) | 1992-09-03 |
| JP2834335B2 JP2834335B2 (en) | 1998-12-09 |
Family
ID=11486725
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3000906A Expired - Lifetime JP2834335B2 (en) | 1991-01-09 | 1991-01-09 | Power transmission structure in work vehicle |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2834335B2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953747A (en) * | 1982-09-14 | 1984-03-28 | 株式会社小糸製作所 | Yarn detecting apparatus |
| JPH02300549A (en) * | 1989-05-16 | 1990-12-12 | Nippon Seiko Kk | Transmission for vehicle |
-
1991
- 1991-01-09 JP JP3000906A patent/JP2834335B2/en not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5953747A (en) * | 1982-09-14 | 1984-03-28 | 株式会社小糸製作所 | Yarn detecting apparatus |
| JPH02300549A (en) * | 1989-05-16 | 1990-12-12 | Nippon Seiko Kk | Transmission for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2834335B2 (en) | 1998-12-09 |
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