JPH0725265B2 - Walk-behind lawn mower - Google Patents

Walk-behind lawn mower

Info

Publication number
JPH0725265B2
JPH0725265B2 JP60156536A JP15653685A JPH0725265B2 JP H0725265 B2 JPH0725265 B2 JP H0725265B2 JP 60156536 A JP60156536 A JP 60156536A JP 15653685 A JP15653685 A JP 15653685A JP H0725265 B2 JPH0725265 B2 JP H0725265B2
Authority
JP
Japan
Prior art keywords
continuously variable
variable transmission
differential device
walk
right wheels
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.)
Expired - Lifetime
Application number
JP60156536A
Other languages
Japanese (ja)
Other versions
JPS6215123A (en
Inventor
紘一 前川
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.)
Kubota Corp
Original Assignee
Kubota Corp
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 Kubota Corp filed Critical Kubota Corp
Priority to JP60156536A priority Critical patent/JPH0725265B2/en
Publication of JPS6215123A publication Critical patent/JPS6215123A/en
Publication of JPH0725265B2 publication Critical patent/JPH0725265B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Description

【発明の詳細な説明】 〔産業上の利用分野〕 刈刃及び左右車輪を駆動するエンジンを設けるととも
に、前記刈刃によって切断された刈芝を左右車輪間の横
一側部に配設した排出ダクトを介して機体後方に排出す
る歩行型芝刈機に関する。
DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] An engine for driving a cutting blade and left and right wheels is provided, and the grass cut by the cutting blade is disposed on one lateral side between the left and right wheels. The present invention relates to a walk-behind lawnmower that discharges to the rear of the aircraft via a duct.

〔従来の技術〕[Conventional technology]

従来の歩行型芝刈機として、第5図に示す如く、エンジ
ン(01)からベルト式無段変速装置(02)を介して直に
左右一対の後車輪(03)を駆動すべく構成したものでが
ある。
As shown in FIG. 5, a conventional walking lawn mower is configured to directly drive a pair of left and right rear wheels (03) from an engine (01) through a belt type continuously variable transmission (02). There is.

〔発明が解決しようとする問題点〕[Problems to be solved by the invention]

上記従来例においては、直進走行を行つての芝刈り作業
時の走行速度を任意に選択できるが、左右車輪が等速駆
動されるために、旋回時には走行系のクラツチを切つて
手押し走行による旋回を行わねばならない煩わしさがあ
つた。
In the above-mentioned conventional example, the traveling speed at the time of mowing work while traveling straight ahead can be arbitrarily selected, but since the left and right wheels are driven at a constant speed, the clutch of the traveling system is cut to make the turning by hand. There was an annoyance that I had to do.

本発明は、芝刈機の伝動構造を工夫することによつて、
円滑な自走旋回を行えるようにするとともに、そのため
の構造が組付け容易で、且つ、コンパクトな構造のもの
から得しめんとすることを目的とする。
The present invention, by devising the transmission structure of the lawn mower,
An object of the present invention is to enable smooth self-propelled turning, and to provide a structure for that purpose that is easy to assemble and has a compact structure.

〔問題点を解決するための手段〕[Means for solving problems]

左右車輪をディスク式無段変速装置と差動装置を順次介
して駆動し、前記ディスク式無段変速装置の駆動ディス
ク軸を無段変速装置のケースから延出のステーを介して
支持するとともに、従動ディスク軸を前記差動装置のケ
ースに支承させて前記無段変速装置と前記差動装置とを
ユニット化し、そのユニット化した無段変速装置と差動
装置とを、左右車輪間で前記排出ダクトの横側部に配設
した点にある。
Left and right wheels are sequentially driven through a disc type continuously variable transmission and a differential device, and a drive disc shaft of the disc type continuously variable transmission is supported via a stay extending from a case of the continuously variable transmission, The driven disk shaft is supported by the case of the differential device to unitize the continuously variable transmission and the differential device, and the unitized continuously variable transmission and differential device are discharged between the left and right wheels. It is located at the side of the duct.

〔作 用〕[Work]

左右車輪を差動装置を介して駆動しているので、機体を
旋回操作することによつて左右車輪の回転速度を異なら
せた円滑な自走旋回が行える。又、機体の進行に抵抗を
かけながら機体に旋回力を加えることで、左右車輪を互
いに逆方向に回転させながら、その場でスピンターンさ
せることもでき、かつ、この場合、無段変速装置による
駆動を減速することで、操縦者は無理のない歩行速度で
移動することができる。
Since the left and right wheels are driven via the differential device, a smooth self-propelled turning can be performed by changing the rotational speeds of the left and right wheels by turning the body. Also, by applying a turning force to the airframe while resisting the progress of the airframe, it is possible to rotate the left and right wheels in opposite directions while performing a spin turn on the spot, and in this case, a continuously variable transmission is used. By decelerating the drive, the operator can move at a comfortable walking speed.

さらに、ディスク式無段変速装置を正逆転可能に構成し
た場合には、上記旋回を前進及び後進のいずれにおいて
も行うことができる。
Further, when the disc type continuously variable transmission is configured to be capable of forward and reverse rotation, the turning can be performed both forward and backward.

そして、ディスク式無段変速装置の駆動ディスク軸を無
段変速装置のケースから延出のステーを介して支持する
とともに、従動ディスク軸を前記差動装置のケースに支
承させて無段変速装置と差動装置とをユニット化してあ
るから、機体に対して組付け易く、しかも、駆動ディス
クと従動ディスクの接触圧が変化し難い。
Then, the drive disk shaft of the disk type continuously variable transmission is supported via a stay extending from the case of the continuously variable transmission, and the driven disk shaft is supported by the case of the differential device to provide a continuously variable transmission. Since the differential device is unitized, it can be easily assembled to the machine body, and the contact pressure between the drive disk and the driven disk is unlikely to change.

そして、ディスク式無段変速装置を利用することで、排
出ダクト横側部の小さなデッドスペースにコンパクトに
配設し得る。
By using the disk type continuously variable transmission, it can be compactly arranged in a small dead space on the lateral side of the exhaust duct.

〔発明の効果〕〔The invention's effect〕

本発明によれば、直進走行速度を任意に選択して能率的
に作業を行えることはもちろんのこと、特に、旋回を自
走のまま所望の速度で円滑確実に行うことができ、作業
能率の向上及び疲労の軽減に有益である。
According to the present invention, it is possible to perform work efficiently by arbitrarily selecting a straight traveling speed, and in particular, it is possible to smoothly and surely perform turning at a desired speed while self-propelling, and to improve work efficiency. It is useful for improving and reducing fatigue.

しかも、その為の構造が、コンパクトで、且つ、機体に
対する組付け容易なものから得られる。
Moreover, the structure therefor is compact and easy to assemble to the machine body.

〔実施例〕〔Example〕

第3図は、歩行型芝刈機の全体を示す側面図であつて、
縦型エンジン(1)、カツタークラツチ(2)を介して
ハウジング(16)内の刈刃(3)が駆動され、ベベルギ
ヤ(4)、ユニバーサルジヨイント(5)、伸縮自在な
スプライン軸(7)からなる軸伝動機構(8)並びにデ
イスク式の無段変速装置(9)、さらに、差動装置(1
0)を介して左右後車輪(11),(11)が駆動されるべ
く構成されている。
FIG. 3 is a side view showing the whole of a walk-behind lawnmower.
The cutting blade (3) in the housing (16) is driven through the vertical engine (1) and the cutter clutch (2), and the bevel gear (4), the universal joint (5), and the extendable spline shaft (7). ) Shaft transmission mechanism (8), disk type continuously variable transmission (9), and differential device (1
The left and right rear wheels (11), (11) are configured to be driven via 0).

前記カツタークラツチ(2)と前記無段変速装置(9)
は、操縦用ハンドル(12)に設けられたカツタークラツ
チ操作レバー(13)、変速操作レバー(14)によつて夫
々操作されるべく構成されている。尚、(15)は、ハウ
ジング(16)の後部に連結された切断芝を集める為の集
草容器、(24)は遊転自在な前車輪である。
The cutter clutch (2) and the continuously variable transmission (9)
Is configured to be operated by a cutter clutch operating lever (13) and a gear shift operating lever (14) provided on the steering handle (12), respectively. In addition, (15) is a grass container connected to the rear part of the housing (16) for collecting cut grass, and (24) is a freely rotatable front wheel.

前記無段変速装置(9)は、第1図,第2図に示す如
く、駆動デイスク(9A)に対して従動デイスク(9B)が
摩擦伝動され、駆動デイスク(9A)に対して従動デイス
ク(9B)を半径方向内方側に位置させることにより低速
伝動が行なわれ、半径方向外方側に位置させることによ
り高速伝動が行なわれるべく構成され、さらに、駆動デ
イスク(9A)の回転軸芯を境に右又は左に移動させるこ
とにより正・逆に切換えられるべく、つまり前後進の切
換えも可能に構成されている。
In the continuously variable transmission (9), as shown in FIGS. 1 and 2, the driven disk (9B) is frictionally transmitted to the driving disk (9A), and the driven disk (9A) is driven. 9B) is configured so that low speed transmission is performed by locating 9B) radially inward, and high speed transmission is performed by locating 9B) radially outward. Furthermore, the rotational axis of the drive disk (9A) is By moving to the boundary to the right or left, it is possible to switch between forward and reverse, that is, forward / backward switching is also possible.

前記駆動ディスク(9A)は、そのディスク(9a)が差動
装置(10)のケース(10A)から延出のステー(10a)を
介して支持され、従動ディスク(9B)は、そのディスク
軸(18)が差動装置(10)のケース(10A)に支承さ
れ、前記ディスク式無段変速装置(9)が差動装置(1
0)とユニット化されている。そして、前記駆動デイス
ク(9A)はスプリング(17)によつて常時従動デイスク
(9B)に圧接されるべく構成されている。又、前記従動
デイスク(9B)の回転軸(18)には、爪クラツチ型の走
行クラツチ(19)が設けられ、操縦用ハンドル(12)に
設けられた走行クラツチ操作レバー(20)によつて操作
されるべく構成されている。
The drive disk (9A) is supported via a stay (10a) extending from the case (10A) of the differential device (10), and the driven disk (9B) has its disk shaft (9A). 18) is supported on the case (10A) of the differential device (10), and the disc type continuously variable transmission (9) is connected to the differential device (1).
It is unitized with 0). The drive disk (9A) is configured to be constantly in pressure contact with the driven disk (9B) by the spring (17). Further, the driven shaft (18) of the driven disk (9B) is provided with a claw clutch type traveling clutch (19), and a traveling clutch operating lever (20) provided in the steering handle (12) is used. It is configured to be operated.

前記刈刃(3)によつて切断された草は、第4図に示す
如く、ハウジング(16)の上部横一側方に設けられた排
出ダクト(21)を介して集草容器(15)に集められるも
のであつて、前記排出ダクト(21)は、左右後車輪(1
1),(11)間の横一側部に配設されており、その排出
ダクト(21)の横側部に前記ユニット化された無段変速
装置(9)と差動装置(10)が配設されている。そし
て、前記排出ダクト(21)の側面には、前記無段変速装
置(9)の摩擦伝動面を冷却する為の送風口(22)が設
けられており、除塵網(23)により切断芝の侵入を阻止
すべく構成してある。
As shown in FIG. 4, the grass cut by the cutting blade (3) passes through the discharge duct (21) provided on one lateral side of the upper part of the housing (16) to collect the grass (15). The exhaust duct (21) is assembled on the left and right rear wheels (1
1) and (11) are arranged on one lateral side of the exhaust duct (21), and the unitized continuously variable transmission (9) and differential (10) are disposed on the lateral side of the exhaust duct (21). It is arranged. A blower port (22) for cooling the friction transmission surface of the continuously variable transmission (9) is provided on the side surface of the discharge duct (21), and the dust removal mesh (23) is used to cut the grass. Configured to prevent intrusion.

〔別実施例〕[Another embodiment]

前記無段変速装置(9)としては、前後進の切換えがで
きるデイスク式のものが望ましい。
The continuously variable transmission (9) is preferably a disc type that can be switched between forward and reverse.

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

図面は本発明に係る歩行型芝刈機の実施例を示し、第1
図は要部を示す縦断側面図、第2図は要部を示す一部切
欠き縦断背面図、第3図は芝刈機全体を示す側面図、第
4図はカツターカバーを一部切欠いた平面図、第5図は
従来構造を示す概略図である。 (1)……エンジン、(3)……刈刃、(9)……無段
変速装置、(10)……差動装置、(11)……車輪、(1
8)……従動ディスク軸、(21)……排出ダクト、(9
a)……駆動ディスク軸、(10A)……差動装置ケース、
(10a)……ステー。
The drawings show an embodiment of a walk-behind lawnmower according to the present invention.
The figure shows a vertical side view showing the main part, Fig. 2 a partially cutaway vertical rear view showing the main part, Fig. 3 a side view showing the entire lawn mower, and Fig. 4 a partial cutout of the cutter cover. A plan view and FIG. 5 are schematic views showing a conventional structure. (1) …… engine, (3) …… cutting blade, (9) …… continuously variable transmission, (10) …… differential device, (11) …… wheel, (1
8) …… Driven disk shaft, (21) …… Exhaust duct, (9
a) …… Drive disk axis, (10A) …… differential case,
(10a) …… Stay.

Claims (2)

【特許請求の範囲】[Claims] 【請求項1】刈刃(3)及び左右車輪(11),(11)を
駆動するエンジン(1)を設けるとともに、前記刈刃
(3)によって切断された刈芝を左右車輪(11),(1
1)間の横一側部に配設した排出ダクト(21)を介して
機体後方に排出する歩行型芝刈機において、前記左右車
輪(11),(11)をディスク式無段変速装置(9)と差
動装置(10)を順次介して駆動し、前記ディスク式無段
変速装置(9)の駆動ディスク軸(9a)を差動装置(1
0)のケース(10A)から延出のステー(10a)を介して
支持するとともに、従動ディスク軸(18)を前記差動装
置(10)のケース(10A)に支承させて前記無段変速装
置(9)と前記差動装置(10)とをユニット化し、その
ユニット化した無段変速装置(9)と差動装置(10)と
を、左右車輪(11),(11)間で前記排出ダクト(21)
の横側部に配設してある歩行型芝刈機。
1. An engine (1) for driving a cutting blade (3) and left and right wheels (11), (11) is provided, and cutting grass cut by the cutting blade (3) is provided for the left and right wheels (11), (1
1) In a walk-behind lawnmower that discharges to the rear of the machine through a discharge duct (21) arranged on one lateral side between the left and right wheels (11) and (11), a disc type continuously variable transmission (9) is used. ) And a differential device (10) are sequentially driven to drive the drive disk shaft (9a) of the disk type continuously variable transmission (9) to the differential device (1).
0) The case (10A) is extended via a stay (10a), and the driven disk shaft (18) is supported by the case (10A) of the differential device (10) to provide the continuously variable transmission. (9) and the differential device (10) are unitized, and the unitized continuously variable transmission (9) and differential device (10) are discharged between the left and right wheels (11) and (11). Ducts (21)
A walk-behind lawnmower installed on the lateral side of the.
【請求項2】前記無段変速装置(9)が、正逆転駆動が
可能なディスク式無段変速装置である特許請求の範囲第
1項に記載の歩行型芝刈機。
2. The walk-behind lawnmower according to claim 1, wherein the continuously variable transmission (9) is a disk type continuously variable transmission capable of forward and reverse driving.
JP60156536A 1985-07-15 1985-07-15 Walk-behind lawn mower Expired - Lifetime JPH0725265B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP60156536A JPH0725265B2 (en) 1985-07-15 1985-07-15 Walk-behind lawn mower

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP60156536A JPH0725265B2 (en) 1985-07-15 1985-07-15 Walk-behind lawn mower

Publications (2)

Publication Number Publication Date
JPS6215123A JPS6215123A (en) 1987-01-23
JPH0725265B2 true JPH0725265B2 (en) 1995-03-22

Family

ID=15629933

Family Applications (1)

Application Number Title Priority Date Filing Date
JP60156536A Expired - Lifetime JPH0725265B2 (en) 1985-07-15 1985-07-15 Walk-behind lawn mower

Country Status (1)

Country Link
JP (1) JPH0725265B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0367115A (en) * 1989-08-04 1991-03-22 Ricoh Co Ltd Distance measuring instrument
JP3224502B2 (en) * 1995-11-20 2001-10-29 日本メタルガスケット株式会社 Press mold for laminated metal sheet

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57118719A (en) * 1980-11-14 1982-07-23 Roubaa Mouaa Ousuto Pty Self-propelled flail blade type lawn mower
JPS5951963A (en) * 1982-09-17 1984-03-26 Nippon Zeon Co Ltd Dispersant for pigment for use in paint
JPS5954851A (en) * 1982-09-20 1984-03-29 Yanmar Diesel Engine Co Ltd Vehicle traveling device

Also Published As

Publication number Publication date
JPS6215123A (en) 1987-01-23

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