FR2823635A1 - Cutter blade system for lawn mowers comprises bearers with pins which fit into slots in blades, which are held in place by centrifugal force when mower is used - Google Patents

Cutter blade system for lawn mowers comprises bearers with pins which fit into slots in blades, which are held in place by centrifugal force when mower is used Download PDF

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Publication number
FR2823635A1
FR2823635A1 FR0105834A FR0105834A FR2823635A1 FR 2823635 A1 FR2823635 A1 FR 2823635A1 FR 0105834 A FR0105834 A FR 0105834A FR 0105834 A FR0105834 A FR 0105834A FR 2823635 A1 FR2823635 A1 FR 2823635A1
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France
Prior art keywords
blades
knives
amo
centrifugal force
place
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Granted
Application number
FR0105834A
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French (fr)
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FR2823635B1 (en
Inventor
Pierre Camard
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Individual
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Individual
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Priority to FR0105834A priority Critical patent/FR2823635B1/en
Publication of FR2823635A1 publication Critical patent/FR2823635A1/en
Application granted granted Critical
Publication of FR2823635B1 publication Critical patent/FR2823635B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • A01D34/73—Cutting apparatus
    • A01D34/733—Cutting-blade mounting means

Abstract

The cutter blade system for lawn mowers comprises bearers (1) with pins (4) which fit into slots (5) in the blades. These are held in place by centrifugal force when the mower is used.

Description

_ t __ t _

DESCRIPTIONDESCRIPTION

Cette invention concerne l'interchangeabilité rapide des parties coupantes des lames de tondeuses à gazon,  This invention relates to the rapid interchangeability of the cutting parts of lawn mower blades,

ceci.sans l'aide de clés ni boulons.  without using keys or bolts.

Le but recherché étant la comodité et la simplicité' ceci afin de pouvoir changer.facilement et rapidement les  The aim being comfort and simplicity 'this in order to be able to change easily and quickly the

parties coupantes des couteaux sans déboulonner le porte-  cutting parts of knives without unbolting the holder

lames- En effet les systèmes existants, consistent pour changer et affuter les couteaux à déLoulonnerVn'ouplOsieurs porte-lames très difficilement accessibles surtout sur  blades- Indeed existing systems, consist in changing and sharpening knives to unroll. Vn'ouplOsieurs blade holders very difficult to access especially on

1.0 les tondeuses lourdes impossibles à retourner-  1.0 heavy mowers that cannot be returned-

Dfautres nécessitent un démontage partiel de l'extrémité des lames avec boulons et clés Ces opérations sont toutes très dangereuses les parties tranchantes des couteaux peuvent, en cas de dérapage des clés,io. masionner de très graves blessures aux doigts ou aux mains Ce systèr.e se compose d'une part d'un porte-lames plat (Fig.2) en deux parties équi. libré sur l'axe de rotation (1) de ce porte-lames et d'autre part d'un enserable amovible (Eig.1) destiné à être glssé sur le porte-lames - Le couteau tranchant (2) se situant a l'extrémité Chaque partie du portelames poséde un tourillon de butée en acier (4)- Le role de celui-ci est de retenir l'ensemble amovible tiré par la force centrifuge quand les lames sont en action et de deux dogagements latéraux (3) qui permettent l 'introduction du porte-lames dans l'ensemble amovible jusqu'au tourillon de butée (4) L'ensemble amovible se compose d'une rainure centrale  Others require partial disassembly of the end of the blades with bolts and keys. These operations are all very dangerous. The sharp parts of the knives can, if the keys slip, io. hide very serious injuries to fingers or hands This system consists on the one hand of a flat blade holder (Fig. 2) in two equal parts. released on the axis of rotation (1) of this blade holder and on the other hand of a removable bundle (Eig.1) intended to be slipped on the blade holder - The sharp knife (2) is located at the 'end Each part of the blade holder posede a steel stop pin (4) - The role of it is to retain the removable assembly pulled by centrifugal force when the blades are in action and two lateral doggages (3) which allow the insertion of the blade holder in the removable assembly up to the stop pin (4) The removable assembly consists of a central groove

3o (5) servant au coulissage du tourillon de butée du porte-  3o (5) used to slide the stop pin of the holder

lames, de deux glissières latérales (6), es glissières permettent de maintenir en place le porte-lames, d'une ailette (7.) positionnée à l'arrière du couteau de manière à aspirer, pendant le travail, donc à redresser dans un premier temps l'herbe non coupée et à éjecter ensuite celle coupée -2- -  blades, two lateral slides (6), es slides allow to keep in place the blade holder, a fin (7.) positioned at the back of the knife so as to suck, during work, therefore to straighten in first the uncut grass and then eject the cut grass -2- -

DESCRIPTIONDESCRIPTION

Afin de fonctionner l'ensemble amovible et le porte-  In order to operate the removable assembly and the holder

lames doivent être réunis (Fig.3) pour former un seul élément - Le temps d' assemblage des deux parties est de l'ordre d'une seconde La rotation et la grande vitesse des lames permettent alors à la force centrifuge d'entrer en action et de maintenir naturellement en place l 'ensemble amovible A l'arrière également de la partie amovible, donc à l'abr de la proJection de l'herbe, est fixé un ressort plat (8) de manLère à faire frein par pression sur le porte-lames afin d'empêcher, par les trépidations, le déplacement de la partie amovible en roulant avec lames arrêtées- Un léger cran (9) est réalisé sur le chant du porte-lames de mar.iée a lbérer la pression du ressort Le ressort ne gênant pas ainsi l'entrée de la partie amovible Dès l'arrét des lames la force centrifuge étant annulée, le démontage pour l'affûtage de la partie arnovible est réalisoe facilement par la procédure inverse et dans le même temps  blades must be joined (Fig.3) to form a single element - The assembly time of the two parts is of the order of one second The rotation and the high speed of the blades then allow the centrifugal force to enter action and naturally hold the removable assembly in place Also at the rear of the removable part, therefore sheltered from the projection of the grass, is fixed a flat spring (8) so as to brake by pressing on the blade holder to prevent, by the trepidations, the displacement of the removable part while rolling with blades stopped - A slight notch (9) is made on the edge of the blade holder to reduce the pressure of the spring The spring thus not interfering with the entry of the removable part As soon as the blades are stopped, the centrifugal force being canceled, disassembly for sharpening the removable part is easily carried out by the reverse procedure and at the same time

Claims (1)

EVENDICATIONSEVENDICATIONS -1- Systême permettant le chgement rapde et sans au.cun dan er des cotenux de CO,UpQ des; todeus:es à gazan s;ans, l'aide de clés,r bo, ulonsjblocage p r force centrifge Couteaux amo,vibles. (FIG.3)caractérsé en ce: que 1a réun,on rapide pr giss;Éé:re ()de,s deux pi;écea'(FIG.1et2) fo.rmant ans;i um s:e,ul ensiemble est réals4e en um temp,s: reccord -2- Couteaux m"vbles, selon.revedicatin tcaractérisé eni ce que le po,rt^lames(;FIG.2) rect âx deux extrémités les dispo,si.tfs c=pants;(FIG.1)Celu ci est équil'Uré -sur l'axe de ratatin:(tde' la Iame-.Chaque prtte pos,éde deux dégag.ement:s}atérax (3) pe,rmettt de p:résenter et d'ntroduire lrens;em-bLe avi.bLe.(FIG.1) et d'un tourillon de. but:ée en acier(4}, qu' r-e.tient cet ensemble -3- Couteaux amo,vible.s elon revendcatrns 1 et 2 caractéris;é en CQ que s.ur l'ensemble amo,vible. est réalsé a Irextrérri.té de 1 piece un bseau copant(2). Une glis.siére cent. rale (5) permet l'intro.du,ctfion et le co.ulssge du- tourillon de. b, utée -4-Ca;te:aux amovibles selon 1 run Q quelconque,des revendic-atio;ns p.récédentes caractérlsé en ce que une =lette(7) pos.itionée, en bowt de lame p.ermet d'aspirer donc à redressar I'her,e n-on coupée et à éjecter ensuite celle coupée -5- Couteax amo,v.ibles selo.n l'une quelconque des revendfcatn précédentes' carâctérisé en ce que un ressort plat (8), est fxé sur I'arrière de la partie amovrÈle de manière à faire frein par pression sur le po.rte-lames afin que la partie movi.ble, ne se deplace pas par trépidatin en rolant. avec lames inactvess-.Un léger cran (9) rélisé sur le chant du porte-lames lb:e:re la pression du ressort  -1- System allowing rapid and no change in the cost of CO, UpQ des; todeus: es à gazan s; ans, using keys, r bo, ulonsjblocage p r force centrifge Amo knives, live. (FIG. 3) characterized in that: 1a reunites, we quickly pr giss; Éé: re () of, s two pi; écea '(FIG.1 and 2) fo.rmant ans; i um s: e, ul ensemble est real in um temp, s: reccord -2- Movable knives, according to. FIG. 1) This is equil'Uré -on the shrivel line: (tde 'la Iame-.Each ready-made pos, gives two clearances: s} atérax (3) pe, rmettt de p: resent et d 'ntroduce lrens; em-bLe avi.bLe. (FIG.1) and a pin of .but: ée in steel (4}, which holds this set -3- Knives amo, vible.s elon rescatrns 1 and 2 characterized in CQ that s.On the loose, visible assembly is made at the Irextrérri.té of 1 piece a copant bseau (2). A central slide.siére rale (5) allows the intro. du, ctfion and the co.ulssge du- trunnion of. b, utée -4-Ca; te: to the removable ones according to 1 run Q any, of the claims; ns p.récédentes characterized in that one = lette (7) pos. positioned, in blade bow for suction er therefore to straighten I'her, e n-on cut and then eject that cut -5- Couteax amo, v.ibles selo.n any one of the preceding revendfcatn 'characterized in that a flat spring (8), is fixed on the rear of the removable part so as to brake by pressing on the blade holder so that the movable part does not move by trepidatin while rolling. with inactvess-blades. A slight notch (9) on the edge of the blade holder lb: e: re the spring pressure
FR0105834A 2001-04-24 2001-04-24 REMOVABLE KNIVES FOR QUICK AND EASY CHANGE LAWN MOWERS, WITHOUT KEYS OR BOLTS, BLOCKED BY CENTRIFUGAL FORCE Expired - Fee Related FR2823635B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR0105834A FR2823635B1 (en) 2001-04-24 2001-04-24 REMOVABLE KNIVES FOR QUICK AND EASY CHANGE LAWN MOWERS, WITHOUT KEYS OR BOLTS, BLOCKED BY CENTRIFUGAL FORCE

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0105834A FR2823635B1 (en) 2001-04-24 2001-04-24 REMOVABLE KNIVES FOR QUICK AND EASY CHANGE LAWN MOWERS, WITHOUT KEYS OR BOLTS, BLOCKED BY CENTRIFUGAL FORCE

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FR2823635A1 true FR2823635A1 (en) 2002-10-25
FR2823635B1 FR2823635B1 (en) 2003-09-12

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FR0105834A Expired - Fee Related FR2823635B1 (en) 2001-04-24 2001-04-24 REMOVABLE KNIVES FOR QUICK AND EASY CHANGE LAWN MOWERS, WITHOUT KEYS OR BOLTS, BLOCKED BY CENTRIFUGAL FORCE

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7775026B2 (en) 2008-06-12 2010-08-17 Christopher Bever Lawn mower blade assembly for quick blade replacement and associated methods
US7784254B2 (en) 2008-06-12 2010-08-31 Christopher Bever Lawn mower blade assembly having blade mount for quick blade replacement and associated methods
WO2016150503A1 (en) * 2015-03-25 2016-09-29 Husqvarna Ab Improved impact resistance for a robotic working tool
US10849270B2 (en) 2013-03-14 2020-12-01 Husqvarna Ab Quick-coupling for mower blades

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563015A (en) * 1968-05-21 1971-02-16 Charlie C Renfroe Rotary lawnmower cutter bar
DE2327356A1 (en) * 1973-03-31 1975-01-02 Albert Mang MOWING MACHINE, IN PARTICULAR LAWN MACHINE
US4750320A (en) * 1987-05-07 1988-06-14 Liebl Thomas J Rotary cutting blade having replaceable cutting edge
US5019113A (en) * 1990-05-07 1991-05-28 Burnell John F Rotary lawn mower blade assembly
US5791131A (en) * 1996-04-22 1998-08-11 Snapper, Inc. Convertible mower blade

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3563015A (en) * 1968-05-21 1971-02-16 Charlie C Renfroe Rotary lawnmower cutter bar
DE2327356A1 (en) * 1973-03-31 1975-01-02 Albert Mang MOWING MACHINE, IN PARTICULAR LAWN MACHINE
US4750320A (en) * 1987-05-07 1988-06-14 Liebl Thomas J Rotary cutting blade having replaceable cutting edge
US5019113A (en) * 1990-05-07 1991-05-28 Burnell John F Rotary lawn mower blade assembly
US5791131A (en) * 1996-04-22 1998-08-11 Snapper, Inc. Convertible mower blade

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7775026B2 (en) 2008-06-12 2010-08-17 Christopher Bever Lawn mower blade assembly for quick blade replacement and associated methods
US7784254B2 (en) 2008-06-12 2010-08-31 Christopher Bever Lawn mower blade assembly having blade mount for quick blade replacement and associated methods
US10849270B2 (en) 2013-03-14 2020-12-01 Husqvarna Ab Quick-coupling for mower blades
WO2016150503A1 (en) * 2015-03-25 2016-09-29 Husqvarna Ab Improved impact resistance for a robotic working tool
CN107404841A (en) * 2015-03-25 2017-11-28 胡斯华纳有限公司 The improved impact resistance of robot manipulating task instrument

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Publication number Publication date
FR2823635B1 (en) 2003-09-12

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