FR2731313A1 - Motor driven lawnmower clutch - Google Patents

Motor driven lawnmower clutch Download PDF

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Publication number
FR2731313A1
FR2731313A1 FR9503023A FR9503023A FR2731313A1 FR 2731313 A1 FR2731313 A1 FR 2731313A1 FR 9503023 A FR9503023 A FR 9503023A FR 9503023 A FR9503023 A FR 9503023A FR 2731313 A1 FR2731313 A1 FR 2731313A1
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FR
France
Prior art keywords
belt
driven
pulley
motor
spring
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
Application number
FR9503023A
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French (fr)
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FR2731313B1 (en
Inventor
Gerard Lelasseux
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TECHNI IND
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TECHNI IND
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Publication date
Application filed by TECHNI IND filed Critical TECHNI IND
Priority to FR9503023A priority Critical patent/FR2731313B1/en
Publication of FR2731313A1 publication Critical patent/FR2731313A1/en
Application granted granted Critical
Publication of FR2731313B1 publication Critical patent/FR2731313B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/67—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator
    • A01D34/68—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis hand-guided by a walking operator with motor driven cutters or wheels
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D2101/00—Lawn-mowers

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

The power driven lawnmower has a main chassis equipped with a motor, two front steering wheels and rear driven wheels. The rear wheels are driven through a coaxial differential coaxial and a gear box located between the motor and differential. A drive pulley (1) is mounted on the motor and a driven pulley (2) mounted on the gear box is driven by a power transmission belt (3). Driving power is transmitted by the belt tension by a tensioner pulley (4) working on the back of the belt. The tension force is obtained an arm (5) mounted on a pivot (6) tensioned by a spring (7). An absorber (9) absorbs impacts and regulates the spring return travel following easing off the pedal (8) by the driver.

Description

La présente invention concerne les tondeuses auto-portée et a pour objet une telle tondeuse. The present invention relates to self-propelled mowers and relates to such a mower.

Actuellement, les tondeuses de ce type sont généralement équipées d'un bac de coupe comportant une, voir plusieurs lames tournant dans le même sens ou dans le sens opposé (lames contre rotative) munies d'un dispositif de ramassage ou non. Currently, mowers of this type are generally equipped with a cutting deck comprising one or more blades turning in the same direction or in the opposite direction (blades against rotating) provided with a pickup device or not.

Les tondeuses comportent un dispositif de transmission de mouvement du moteur vers une paire de roues motrices soit avant soit arrière ou les deux. The mowers include a device for transmitting movement of the engine to a pair of drive wheels, either front or rear or both.

I1 existe actuellement différents dispositifs de transmission possédant ses avantages et ses inconvénients
- La boîte hydrostatique avec différentiel incorporé disposée soit coaxialement avec les axes de roues motrices soit au dessus de celles-ci mais avec un dispositif de renvoi latéral, offre une très grande souplesse d'utilisation : accélération entre 0 et 10 km/h voir même plus de façon linéaire que ce soit à vide , en charge (bac de ramassage rempli), à plein régime ou non.I1 currently exist different transmission devices having its advantages and disadvantages
- The hydrostatic gearbox with incorporated differential arranged either coaxially with the drive wheel axles or above them but with a lateral deflection device, offers great flexibility of use: acceleration between 0 and 10 km / h or even more linearly whether empty, laden (grass collector full), full speed or not.

- La boîte mécanique avec différentiel incorporé plus dispositif d'embrayage progressif disposée comme la boîte hydrostatique offre une souplesse d'utilisation plus limitée liée à ses rapports de vitesse figés. - The mechanical gearbox with incorporated differential plus progressive clutch device arranged like the hydrostatic gearbox offers a more limited flexibility of use linked to its fixed gear ratios.

- La boîte mécanique disposée sur le châssis de la tondeuse est couplée à un différentiel par des moyens de transmission de mouvement. - The mechanical gearbox arranged on the frame of the mower is coupled to a differential by means of movement transmission.

Ce différentiel peut être disposé soit coaxialement avec les roues motrices, soit au dessus de celle-ci mais avec un dispositif de renvoi latéral.  This differential can be arranged either coaxially with the drive wheels, or above the latter but with a lateral deflection device.

Un dispositif de transmission de mouvement entre le moteur et la boîte complète l'ensemble du montage. A movement transmission device between the engine and the gearbox completes the entire assembly.

Suivant la configuration du montage, nous avons deux ou trois dispositifs de transmission de mouvement
L'un deux est débrayable.Depending on the configuration of the assembly, we have two or three motion transmission devices
One of them is disengageable.

L'inconvénient majeur de ce montage actuellement est le fait que le système de débrayage est "tout ou rien", soit il est embrayé, soit il est débrayé. The major drawback of this arrangement at present is the fact that the declutching system is "all or nothing", either it is engaged or it is disengaged.

Il se produit donc un accoût au démarrage qui est plus ou moins violent suivant votre régime moteur, votre rapport de vitesse ou le niveau de remplissage du bac si la tondeuse en est munie. There is therefore an accout at startup which is more or less violent depending on your engine speed, your speed ratio or the level of filling of the tank if the mower is equipped with it.

L'avantage de ce système de transmission global par rapport aux autres (boîte hydrostatique ou boîte mécanique avec disposition d'embrayage incorporé) est son prix de revient. The advantage of this overall transmission system compared to the others (hydrostatic box or mechanical box with incorporated clutch arrangement) is its cost price.

La présente invention a pour but de pallier à l'inconvénient majeur du dispositif de transmission décrit ci-dessus qui est l'accoût au démarrage. The present invention aims to overcome the major drawback of the transmission device described above which is the start at start.

La source motrice étant toujours en fonctionnement continu, nous intervenons sur la fonction d'embrayage entre celle-ci et la source réceptrice. The power source is always in continuous operation, we intervene on the clutch function between it and the receiving source.

Entre la phase débrayée et la phase embrayée se situe une phase dit de patinage : plus cette phase de patinage est courte, plus l'embrayage est rude et violent. Between the disengaged phase and the engaged phase is a so-called skating phase: the shorter this skating phase, the rougher and more violent the clutch.

L'invention consiste à augmenter la durée de cette phase de patinage entre l'organe moteur et l'organe récepteur.  The invention consists in increasing the duration of this slippage phase between the drive member and the receiver member.

L'objet de l'invention est une tondeuse à gazon auto-portée essentiellement constituée d'un châssis principal équipé d'un moteur, de roues avant directrices, de roues arrières motrices par l'intermédiaire d'un différentiel disposé coaxialement avec l'axe des roues arrières et d'une boîte mécanique disposée entre le moteur placé à l'avant et le différentiel à l'arrière de celle-ci, d'une poulie motrice "1" montée sur le moteur d'une poulie réceptrice "2" montée sur la boîte mécanique d'une courroie "3" assurant la transmission de puissance. The object of the invention is a self-supporting lawn mower essentially consisting of a main chassis equipped with a motor, front steering wheels, rear driving wheels by means of a differential arranged coaxially with the axis of the rear wheels and of a mechanical gearbox arranged between the motor placed at the front and the differential at the rear thereof, of a driving pulley "1" mounted on the motor of a receiving pulley "2 "mounted on the mechanical gearbox of a belt" 3 "ensuring power transmission.

Autres caractéristiques : la puissance motrice est transmise par la tension de la courroie "3" par l'intermédiaire d'une poulie tendeur "4" travaillant sur le dos de la courroie "3" et l'effort de tension est obtenue par l'ensemble d'un bras "5" monté sur un pivot "6" tiré par un ressort "7". Other characteristics: the motive power is transmitted by the tension of the belt "3" via a tensioning pulley "4" working on the back of the belt "3" and the tension force is obtained by the assembly of an arm "5" mounted on a pivot "6" pulled by a spring "7".

Un amortisseur "9" amortit l'impact et régule la course de retour du ressort "7" suite au relâchement de la pédale "8" par le conducteur. A shock absorber "9" absorbs the impact and regulates the return stroke of the spring "7" following the release of the pedal "8" by the driver.

La phase d'accélération de la tondeuse dépend de la vitesse et de la force de tension de la courroie "3" par la poulie tendeur "4".  The acceleration phase of the mower depends on the speed and the tension force of the belt "3" by the tensioner pulley "4".

Claims (3)

REVENDICATIONCLAIM 1. Tondeuse à gazon auto-portée essentiellement constituée d'un châssis principal équipé d'un moteur recevant une poulie motrice "1", d'une bo^te mécanique équipée d'une poulie réceptrice "2", une courroie "3" assurant la transmission de puissance et de vitesse de la tondeuse. 1. Self-supporting lawn mower essentially consisting of a main chassis equipped with a motor receiving a driving pulley "1", a mechanical box equipped with a receiving pulley "2", a belt "3" ensuring the power and speed transmission of the mower. 2. Tondeuse, suivant la revendication 1, caractérisée en ce que la puissance motrice est transmise par la tension de la courroie "3" par l'intermédiaire d'une poulie tendeur "4" travaillant sur le dos de la courroie "3" et l'effort de tension est obtenue par l'ensemble d'un bras "5" monté sur pivot "6" tiré par un ressort "7" 2. Mower according to claim 1, characterized in that the motive power is transmitted by the tension of the belt "3" via a tensioning pulley "4" working on the back of the belt "3" and the tension force is obtained by the assembly of an arm "5" mounted on pivot "6" pulled by a spring "7" 3. Tondeuse, suivant la revendication 2, caractérisée en ce qu'un amortisseur "9" amortit l'impact et régule la course de retour du ressort "7" suite au relâchement de la pédale "8" par le conducteur.  3. Mower according to claim 2, characterized in that a shock absorber "9" absorbs the impact and regulates the return stroke of the spring "7" following the release of the pedal "8" by the driver.
FR9503023A 1995-03-10 1995-03-10 SELF-CARRYING CLUTCH CLUTCH Expired - Lifetime FR2731313B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR9503023A FR2731313B1 (en) 1995-03-10 1995-03-10 SELF-CARRYING CLUTCH CLUTCH

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9503023A FR2731313B1 (en) 1995-03-10 1995-03-10 SELF-CARRYING CLUTCH CLUTCH

Publications (2)

Publication Number Publication Date
FR2731313A1 true FR2731313A1 (en) 1996-09-13
FR2731313B1 FR2731313B1 (en) 1997-04-25

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
FR9503023A Expired - Lifetime FR2731313B1 (en) 1995-03-10 1995-03-10 SELF-CARRYING CLUTCH CLUTCH

Country Status (1)

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FR (1) FR2731313B1 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10641363B2 (en) * 2015-11-05 2020-05-05 Husqvarna Ab Disengagement mechanism for a walk behind mower

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941610A (en) * 1956-07-10 1960-06-21 Clemson Bros Inc Controllable drive apparatus for rotary mowers
US3445991A (en) * 1965-09-03 1969-05-27 Yard Man Inc Self-propelled mower
US4454706A (en) * 1982-03-16 1984-06-19 Geeck Iii Joseph S Power mower with blade-brake clutch
US4557710A (en) * 1984-02-27 1985-12-10 Greider C Austin Clutch controlled drive unit
US4896487A (en) * 1987-06-10 1990-01-30 Kanzaki Kokyukoki Mfg. Co. Ltd. Drive system for walking mowers
US4907401A (en) * 1988-06-24 1990-03-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Drive assembly for walking mowers
US4915203A (en) * 1989-02-10 1990-04-10 Deere & Company Transmission control for self-propelled implement

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2941610A (en) * 1956-07-10 1960-06-21 Clemson Bros Inc Controllable drive apparatus for rotary mowers
US3445991A (en) * 1965-09-03 1969-05-27 Yard Man Inc Self-propelled mower
US4454706A (en) * 1982-03-16 1984-06-19 Geeck Iii Joseph S Power mower with blade-brake clutch
US4557710A (en) * 1984-02-27 1985-12-10 Greider C Austin Clutch controlled drive unit
US4896487A (en) * 1987-06-10 1990-01-30 Kanzaki Kokyukoki Mfg. Co. Ltd. Drive system for walking mowers
US4907401A (en) * 1988-06-24 1990-03-13 Kanzaki Kokyukoki Mfg. Co., Ltd. Drive assembly for walking mowers
US4915203A (en) * 1989-02-10 1990-04-10 Deere & Company Transmission control for self-propelled implement

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10641363B2 (en) * 2015-11-05 2020-05-05 Husqvarna Ab Disengagement mechanism for a walk behind mower

Also Published As

Publication number Publication date
FR2731313B1 (en) 1997-04-25

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