WO2012045362A1 - Cisaille à gazon manuelle - Google Patents

Cisaille à gazon manuelle Download PDF

Info

Publication number
WO2012045362A1
WO2012045362A1 PCT/EP2010/065044 EP2010065044W WO2012045362A1 WO 2012045362 A1 WO2012045362 A1 WO 2012045362A1 EP 2010065044 W EP2010065044 W EP 2010065044W WO 2012045362 A1 WO2012045362 A1 WO 2012045362A1
Authority
WO
WIPO (PCT)
Prior art keywords
grass shears
shears according
force
handle assembly
knife
Prior art date
Application number
PCT/EP2010/065044
Other languages
German (de)
English (en)
Inventor
Vincent Reichart
Original Assignee
Gardena Manufacturing Gmbh
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 Gardena Manufacturing Gmbh filed Critical Gardena Manufacturing Gmbh
Priority to PCT/EP2010/065044 priority Critical patent/WO2012045362A1/fr
Publication of WO2012045362A1 publication Critical patent/WO2012045362A1/fr

Links

Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00—Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/06—Hand-held edge trimmers or shears for lawns
    • A01G3/065—Hand operated shears for lawns

Definitions

  • the invention relates to a hand-operated grass shears.
  • Hand-operated grass shears are used in particular for supplementary cutting work on edges or other areas of grass areas which are difficult to access for lawn mowers.
  • it is in advantageous embodiments, for example from DE 10 2007 038 796 A1, already known, a
  • Cutting head with a housing containing a handle to connect rotatable, wherein the axis of rotation is parallel to a predetermined by the knife assembly cutting plane and points in the direction of a fixed lower blade of the knife assembly substantially.
  • a cutting head on a handle provided for upright handling about an axis parallel to the cutting plane and perpendicular to the main working direction of the shears.
  • the present invention has for its object to provide a hand-operated grass shears with advantageous handling.
  • the handle assembly advantageously includes in per se conventional design a fixed handle and a movable, in particular articulated to the handle attached to the operating lever, which is pulled from a rest position for a cutting operation by a user's hand encompassing the handle to the handle.
  • the movement of the actuating lever preferably takes place in a plane perpendicular to the cutting plane, which in particular may also contain the pivot axis between handle arrangement and knife carrier.
  • the rest position of the actuating lever corresponds to a rest position of the knife assembly in which the knife assembly is opened. A closing of the knife assembly is typically against a restoring spring force.
  • the multiple operating positions, in each of which manual operation of the grass shears is possible, may be predetermined in predetermined discrete pivot positions or quasi continuously variable.
  • Handgrip arrangements and knife carriers are advantageously stabilized relative to each other in the different operating positions with a holding force, wherein the holding force is preferably, at least in the rest position of the actuating lever, manually overcome by the user and the pivot position without tools variable.
  • the holding force is preferably determined by an axial force acting in the direction of the pivot axis, and holding structures on the handle assembly and knife carrier are advantageously configured so as to rest axially against one another.
  • the holding structures may form a non-positive and / or a positive connection. Preferred is a toothing with excavation bevel.
  • the power transmission device which serves to transmit power from the actuating lever of the handle arrangement to the blade arrangement advantageously contains a force transmission element, which is guided at least with a partial section substantially along the pivot axis between the handle arrangement and blade carrier and, when pivoting between different operating positions see its position along the
  • the actuating element is preferably designed as a flexible tension element, in particular as a cable pull.
  • the course of the actuating element, in particular of the flexible tension element can from the
  • Pivot axis differ by a differential angle, which is advantageously not greater than 10 °, in particular not greater than 5 °.
  • An actuating force exerted on the force transmission element via the actuating lever of the handle arrangement advantageously acts in a holding direction between handle arrangement and knife carrier increasing direction in a section of the force transmission element extending along the pivot axis, so that a holding force which is advantageously low for manual pivoting is increased during a cutting operation and thereby the risk of unintentional pivoting during the cutting process is low.
  • the knife carrier can be subdivided into a base body coupled via the pivot connection with the handle arrangement and a cutting head rotatable relative thereto about a rotation axis to which the knife arrangement is fastened, the axis of rotation being parallel in the cutting plane or parallel thereto.
  • the axis of rotation advantageously extends substantially in the longitudinal direction of the fixed lower blade.
  • the rotational position is assumed for the cutting plane on which the pivot axis between the handle arrangement and the knife carrier is perpendicular, in which case the handle arrangement has the greatest distance from the cutting plane.
  • a guide roller protruding laterally beyond the lower blade can advantageously be provided on the blade carrier, optionally on the cutting head, with which the grass shears extend along a surface running transversely to the cutting plane , For example, a Rasen lake charged, can be performed.
  • Fig. 1 The hand-operated grass shears shown in an oblique view in Fig. 1 is shown partially cut away to make parts of the power transmission assembly visible.
  • a rectangular x-y-z coordinate system is shown with, in which in a typical
  • the grass shears a cutting plane of the knife assembly in an xy plane parallel to a bottom surface, which was assumed to be horizontal, and the x-direction represents the main working direction of the grass shears. The z-direction then runs vertically.
  • the grass shear is shown in FIG. 1 with the knife assembly closed and with a pivotal position of the handle assembly in an operating position away from the knife assembly, which also corresponds to handle alignment in conventional handheld grass shears.
  • the knife assembly of the illustrated hand-operated grass shears includes a lower blade UM and an upper blade OM, which are held in a cutting head SK.
  • the lower blade UM is rigidly fixed in the cutting head SK and the upper blade OM is pivotable about a knife axis MA vertical to the z-direction.
  • the illustrated closed state of the measuring seranix corresponds to the end of a cutting operation or in such grass shears partially by locking the knife assembly lockable storage position.
  • the pivoting direction of the upper blade OM is indicated about the blade axis MA.
  • the elongated lower blade UM has its longitudinal direction in the x direction.
  • a knife carrier consists in the sketched example case of a main body GK and the cutting head SK, wherein the cutting head SK is rotatable about a pointing in the x direction axis of rotation DA in different rotational positions.
  • Such a rotatability of a cutting head relative to a base body is already known in a hand-operated grass shears from the aforementioned prior art.
  • a handle assembly HA In the z-direction placed on the body GK is a handle assembly HA, which in particular has a handle portion GR and a relative to this about a lever axis W3 under the action of a manual force displaceable operating lever BH.
  • the actuating lever BH is shown in the position taken at the end of a cutting operation near the grip portion GR and in the direction of movement indicated by the double arrow BB direction relative to the handle portion GR displaced.
  • the movement of the operating lever BH takes place in the illustrated operating position of the handle assembly in an x-z plane.
  • the handle assembly HA is pivotable relative to the base body GK about a pivot axis SA parallel to the z-direction.
  • the pivoting movement is indicated by the double arrow SB.
  • the formation of a pivoting guide between handle assembly HA and main body GK can be given in various ways. In the example outlined, for example, a guide ring Rl between handle assembly HA and main body GK is attached. accepted. By applying a rotational force to the handle assembly HA relative to the body GK, the handle assembly can be moved to a different operating position in which the elongated handle portion no longer faces the knife assembly, as shown in FIG.
  • the handle assembly HA is advantageously stabilized by the action of such pivoting about the pivot axis SA acting force in a then assumed pivot position, which is characterized both by friction in the articulated connection between handle assembly HA and body GK and by a positive engagement, such as a toothing Excavation slopes can be given.
  • a power transmission arrangement which in particular contains a force transmission element which at least over a partial section substantially along the pivot axis SA runs.
  • a power transmission element is formed in the illustrated preferred embodiment by a pull cable ZS, which extends with a section designated as ZS-A along the pivot axis SA.
  • the traction cable SZ is deflected in the main body GK of the z-direction of the pivot axis SA in the direction of the knife assembly and thereby substantially in the x direction, for which advantageously in the base body GK a guide roller U2 is rotatably mounted on a shaft W2.
  • the pull cable ZS in the handle arrangement is again deflected at the end remote from the deflection roller U2 by a first roller U1 and fixed at a point FS of the handle arrangement HA. sets.
  • the deflection roller U1 is rotatably supported about the axis W1 on the operating lever BH.
  • the pull rope ZS In the resting state of the scissors when the knife arrangement is open, the pull rope ZS is pretensioned with an initial force. Therefore, this initial force also acts in the direction of the pivot axis SA between handle assembly HA and body GK and can determine the holding force with which the holding assembly HA is held relative to the base body GK against pivoting about the pivot axis SA.
  • a manual force acts on the actuating lever BH in the direction of the end position shown in FIG. 1, the roller U1 is pulled away from the main body GK substantially in the direction of the pivot axis SA, whereby the pull cable ZS faces away from the deflection roller U2 in the direction of the blade arrangement End is pulled in the direction of the deflection roller U2.
  • the tension force on the traction cable ZS in particular also on the along the pivot axis SA extending section ZS-A is increased by further tension of the resiliency of the upper blade OM acting spring force and by the resistance of Schneidgut, which also increases the force between the handle assembly HA and body GK increases in the direction of the pivot axis SA and advantageously thereby the unwanted pivoting about the pivot axis SA avoiding holding force is increased.
  • the knife assembly facing away from the end of the pull cable can also be attached directly to the operating lever BH.
  • a pull rope as a power transmission element is particularly simple and inexpensive and advantageously allows both the pivoting of the handle assembly HA about the pivot axis SA and the rotation of the cutting head SK about the axis of rotation DA.
  • On the cutting head SK can on the Opening direction of the upper blade OM side facing away from a guide roller RO may be provided, which is mounted concentrically to the knife axis MA in a preferred embodiment and when guiding the grass shears along a plane perpendicular to the cutting plane guide surface allows a relation to a grazing guide improved movement.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Biodiversity & Conservation Biology (AREA)
  • Ecology (AREA)
  • Forests & Forestry (AREA)
  • Environmental Sciences (AREA)
  • Harvester Elements (AREA)

Abstract

L'invention a pour objet une cisaille à gazon manuelle dont l'ensemble poignées (HA) est monté pivotant relativement à un porte-lames (GK, SK) ou une tête de coupe d'un porte-lames, autour d'un axe de pivotement perpendiculaire au plan de coupe de l'ensemble lames. Avantageusement, un câble de traction (ZS), qui s'étend en partie le long de l'axe de pivotement (SA), assure la transmission de la force entre l'ensemble poignées (HA) et l'ensemble lames (OM, UM).
PCT/EP2010/065044 2010-10-07 2010-10-07 Cisaille à gazon manuelle WO2012045362A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/065044 WO2012045362A1 (fr) 2010-10-07 2010-10-07 Cisaille à gazon manuelle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2010/065044 WO2012045362A1 (fr) 2010-10-07 2010-10-07 Cisaille à gazon manuelle

Publications (1)

Publication Number Publication Date
WO2012045362A1 true WO2012045362A1 (fr) 2012-04-12

Family

ID=43088078

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2010/065044 WO2012045362A1 (fr) 2010-10-07 2010-10-07 Cisaille à gazon manuelle

Country Status (1)

Country Link
WO (1) WO2012045362A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496710A (en) * 1967-01-20 1970-02-24 Seymour Smith & Son Inc Stand-up grass shears
DE3916145C1 (fr) * 1989-05-18 1990-05-23 Wolf-Geraete Gmbh, 5240 Betzdorf, De
DE102007038796A1 (de) 2007-03-15 2008-09-18 Gardena Manufacturing Gmbh Messerantrieb für eine Grasschere
DE202009002224U1 (de) * 2009-02-16 2009-06-04 Grizzly Gartengeräte GmbH & Co. KG Kantenschneider mit kardanischem Griff

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496710A (en) * 1967-01-20 1970-02-24 Seymour Smith & Son Inc Stand-up grass shears
DE3916145C1 (fr) * 1989-05-18 1990-05-23 Wolf-Geraete Gmbh, 5240 Betzdorf, De
DE102007038796A1 (de) 2007-03-15 2008-09-18 Gardena Manufacturing Gmbh Messerantrieb für eine Grasschere
DE202009002224U1 (de) * 2009-02-16 2009-06-04 Grizzly Gartengeräte GmbH & Co. KG Kantenschneider mit kardanischem Griff

Similar Documents

Publication Publication Date Title
EP3792009B1 (fr) Appareil de travail portatif doté d'un outil
EP0176784B1 (fr) Sécateur pour arbres
DE2402187A1 (de) Geraet zum abstreifen der verkleidung von bezogenen leitungen und dgl.
DE4015021A1 (de) Hand-schere, insbesondere ast-, hecken- und/oder gartenschere
DE102006030947A1 (de) Elektrischer Trockenrasierapparat
DE202013103745U1 (de) Heckenschere
EP2979538B1 (fr) Secateur
DE102014002290A1 (de) Handgriff für ein Arbeitsgerät mit einem Antriebsmotor
EP0074578B1 (fr) Sécateur à effet de levier
DE602004002438T2 (de) Abriegelungsmechanismus für eine schwenkbare Griffanordnung eines Kraftwerkzeugs
DE202016105276U1 (de) Schneidwerkzeug, insbesondere Heckenschere
EP1884156B1 (fr) Machine-outil électronique commandée à la main tout comme couplage d'une machine-outil électronique commandée à la main
WO2012045362A1 (fr) Cisaille à gazon manuelle
EP2120529B1 (fr) Ciseaux à pelouse comportant un dispositif de préhension
DE3922016C2 (fr)
DE102007031145A1 (de) Handbetätigbare Schere
EP2185326B1 (fr) Dispositif de coupe comprenant au moins une tête de coupe mobile qui peut être entraînée par un moteur
EP1333962A1 (fr) Dispositif de coupe a deux machoires depla ables de maniere a s'appliquer l'une sur l'autre par commande manuelle
EP0754404B1 (fr) Sécateur monté sur une perche
DE202009002224U1 (de) Kantenschneider mit kardanischem Griff
DE202006021294U1 (de) Handgeführtes Arbeitsgerät
DE202014010436U1 (de) Beschneidewerkzeug
DE1665498B1 (de) Abmantelungswerkzeug fuer elektrische Kabel
DE7401562U (de) Gerät zum Abstreifen der Verkleidung von bezogenen Leitungen und dgL
DE202010003251U1 (de) Multifunktionales Sicherheitsmesser und/oder Mehrzweckmesser

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 10763692

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 10763692

Country of ref document: EP

Kind code of ref document: A1