DE2948097A1 - Electric hedge cutters with safety switch arrangement - using series switch sensors in both handles controlling motor current - Google Patents

Electric hedge cutters with safety switch arrangement - using series switch sensors in both handles controlling motor current

Info

Publication number
DE2948097A1
DE2948097A1 DE19792948097 DE2948097A DE2948097A1 DE 2948097 A1 DE2948097 A1 DE 2948097A1 DE 19792948097 DE19792948097 DE 19792948097 DE 2948097 A DE2948097 A DE 2948097A DE 2948097 A1 DE2948097 A1 DE 2948097A1
Authority
DE
Germany
Prior art keywords
sensors
handle
motor current
series
cutters
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.)
Ceased
Application number
DE19792948097
Other languages
German (de)
Inventor
Erwin Dipl.-Ing. 7057 Winnenden Wolf
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs 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 Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Priority to DE19792948097 priority Critical patent/DE2948097A1/en
Publication of DE2948097A1 publication Critical patent/DE2948097A1/en
Ceased legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G3/00Cutting implements specially adapted for horticultural purposes; Delimbing standing trees
    • A01G3/04Apparatus for trimming hedges, e.g. hedge shears
    • A01G3/047Apparatus for trimming hedges, e.g. hedge shears portable
    • A01G3/053Apparatus for trimming hedges, e.g. hedge shears portable motor-driven

Abstract

The cutters have a handle (2) formed integrally with the housing (1) for the electric drive motor, together with an auxiliary grip handle (3). Both handles (2,3) incorporate a sensor (6,7) for a respective switch, the two switches connected in series. An electronic power circuit is operated directly by actuation of the two sensors (6,7), or is operated indirectly via a switching relay. The drive motor is only supplied with current when both sensors (6,7) are actuated, to ensure safe operation of the hedge cutters, the motor current automatically interrupted if either sensors (6,7) is released, to bring the two blades (4,5) to rest.

Description

Licentia
Patent-Verwaltungs-GmbH Theodor-Stern-Kai 1, 6ooo Prankfurt/H.
Licentia
Patent-Verwaltungs-GmbH Theodor-Stern-Kai 1, 6ooo Prankfurt / H.

SE2-S 78/21 Frankfurt, den 27.11.1979 Dr.Wf/fr SE2-S 78/21 Frankfurt, November 27, 1979 Dr.Wf/fr

Elektromotorisch angetriebene HeckenschereElectric motor driven hedge trimmer

Die Erfindung bezieht sich auf eine elektromotorisch angetriebene Heckenschere mit einem Handgriff für die Antriebseinheit und einem räumlich davor angeordneten Zusatzhandgriff, wobei jeder Handgriff ein Betätigungsglied für einen elektrischen Schalter enthält und die beiden Schalter elektrisch in Reihe geschaltet sind und so eine zweifach wirkende Schutzvorrichtung bilden.The invention relates to an electric motor-driven hedge trimmer with a handle for the drive unit and an additional handle arranged in front of it, each handle containing an actuator for an electrical switch and the two switches electrically in Are connected in series and thus form a double-acting protective device.

Bei einer bekannten Heckenschere dieser Art ist im Handgriff der Antriebseinheit eine Drücker-Schalterkombination untergebracht und des weiteren vorgeschlagen worden, im feststehenden Zusatzhandgriff einen Schaltrahmen beweglich anzuordnen, der mit einem Schalthebel mechanisch gekuppelt ist, welcher ein Schaltelement für die Betätigung des zweiten elektrischen Schalters enthält.In a known hedge trimmer of this type, a trigger-switch combination is accommodated in the handle of the drive unit and it has also been proposed to arrange a movable switch frame in the fixed auxiliary handle, which is mechanically coupled to a shift lever, which is a switching element for actuating the second electrical switch contains.

Derart ausgestaltete und angeordnete Betätigungeglieder und Schalter beeinträchtigen einerseits die für eine optimale Handhabung an sich notwendige freie Griffgestaltung und erfordern andererseits eine Anzahl mechanischer Bauelemente, die im Falle eines Schaltvorgangs bewegt werden müssen.Such designed and arranged actuating members and On the one hand, switches impair the free design of the handle, which is necessary per se for optimal handling on the other hand require a number of mechanical components that have to be moved in the event of a switching operation.

-3-130023/0292-3-130023 / 0292

Es ist Aufgabe der Erfindung, unter weitestgehendein Verzicht auf mechanische Betätigungsmittel die Voraussetzung für eine hinsichtlich einer optimalen Handhabung frei wählbare Griffgestaltxiüg zu schaffen.It is the object of the invention to be dispensed with as far as possible on mechanical actuation means the prerequisite for a freely selectable with regard to optimal handling To create handle shape.

Diese Aufgabe ist erfindungsgemäß dadurch gelöst, da3 die Betätigungseleirente für die beiden Schalter als Sensoren ausgebildet sind, denen eine Leistungselektronik zugeordnet ist, welche bei Betätigung der Sensoren den jeweils zugehörigen Schalter unmittelbar betätigt oder dessen Betätigung mittelbar über ein Schaltrelais bewirkt.This object is achieved according to the invention in that the actuating elements for the two switches are used as sensors are formed, which are assigned power electronics, which when the sensors are actuated, the respectively associated Switch actuated directly or its actuation is effected indirectly via a switching relay.

Ein Ausführurgsbeispiel des Gegenstands der Erfindung wird im nachstehenden anhand der Zeichnung erläutert.An embodiment of the subject invention is explained below with reference to the drawing.

Der Handgriff für die Antriebseinheit 1 der Heckenschere ist nit 2 bezeichnet, während J den vor der Antriebseinheit befindlichen Ziisatzhandgriff kennzeichnet und 4,5 die Schermesser darstellen.The handle for the drive unit 1 of the hedge trimmer is denoted by 2, while J denotes the accessory handle located in front of the drive unit and 4.5 denotes the cutter represent.

Im Handgriff 2 ist ein Sensor 6 untergebracht, im Zusatzhandgriff ein Sensor 7» und im Antriebsgehäuse ist eine zentrale Leistrongselektronik 8 mit einem Schaltrelais vorgesehen. A sensor 6 is accommodated in the handle 2, in the additional handle a sensor 7 »and in the drive housing is one central Leistrong electronics 8 provided with a switching relay.

Werden beide Sensoren betätigt bzw. gedrückt, so wird der Stromkreis für den Antriebsmotor geschlossen. Damit ist die Heckenschere in Betrieb und die beiden Schermesser 4-, 5 bewegen sich.If both sensors are activated or pressed, the circuit for the drive motor is closed. So that is Hedge trimmer in operation and the two cutting blades 4-, 5 move.

Wird einer der beiden Sensoren losgelassen, so wird der Motorstromkreis unterbrochen und die Heckenschere könnt zum Stillstand.If one of the two sensors is released, the motor circuit is interrupted and the hedge trimmer can to a standstill.

Im Betätigungsfall der Sensoren wird beispielsweise über die zentrale Leistungselektronik 8 eine UND-Verknüpfung hergestellt und ein entsprechendes Schaltglied oder Schaltrelais betätigt.When the sensors are activated, an AND link is established via the central power electronics 8, for example produced and actuated a corresponding switching element or switching relay.

130023/0292130023/0292

Die das Schließen und Offnen des Motorstromkreises bewirkenden Sensoren 6 und 7 können je nach den Erfordernissen der Handhabung und Sicherheit in ihrer Form und Fläche beliebig ausgestaltet sein. The sensors 6 and 7, which cause the closing and opening of the motor circuit, can be designed as desired in terms of their shape and area, depending on the requirements of handling and safety.

190023/0292190023/0292

Claims (1)

Licentia
Patent-Verwaltungs-GmbH Theodor-Stern-Kai 1, 6ooo Frankfurt/M.
Licentia
Patent-Verwaltungs-GmbH Theodor-Stern-Kai 1, 6ooo Frankfurt / M.
SE2-S 78/21 Frankfurt, den 27.11.1979 SE2-S 78/21 Frankfurt, November 27, 1979 Dr.Wf/frDr.Wf/fr PatentanspruchClaim \j Elektromotorisch angetriebene Heckenschere mit einem Handgriff für die Antriebseinheit und einem räumlich davor angeordneten Zusatzhandgriff, wobei jeder Handgriff ein Betätigungsglied für einen elektrischen Schalter enthält und die beiden Schalter elektrisch in Eeihe geschaltet sind, dadurch gekennzeichnet, daß die Betätigungsglieder für die beiden Schalter als Sensoren ( 6,7 ) ausgebildet sind, denen eine Leistungselektronik zugeordnet ist, welche bei Betätigung der Sensoren den jeweils zugehörigen Schalter unmittelbar betätigt oder dessen Betätigung mittelbar über ein Schaltrelais bewirkt. \ j Electric motor-driven hedge trimmer with a handle for the drive unit and an additional handle arranged spatially in front of it, each handle containing an actuating element for an electrical switch and the two switches being electrically connected in series, characterized in that the actuating elements for the two switches act as sensors (6,7), which are assigned power electronics which, when the sensors are actuated, actuate the respective associated switch directly or actuate it indirectly via a switching relay. 130023/0292130023/0292 ORIGINAL INSPECTEDORIGINAL INSPECTED
DE19792948097 1979-11-29 1979-11-29 Electric hedge cutters with safety switch arrangement - using series switch sensors in both handles controlling motor current Ceased DE2948097A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792948097 DE2948097A1 (en) 1979-11-29 1979-11-29 Electric hedge cutters with safety switch arrangement - using series switch sensors in both handles controlling motor current

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792948097 DE2948097A1 (en) 1979-11-29 1979-11-29 Electric hedge cutters with safety switch arrangement - using series switch sensors in both handles controlling motor current

Publications (1)

Publication Number Publication Date
DE2948097A1 true DE2948097A1 (en) 1981-06-04

Family

ID=6087195

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19792948097 Ceased DE2948097A1 (en) 1979-11-29 1979-11-29 Electric hedge cutters with safety switch arrangement - using series switch sensors in both handles controlling motor current

Country Status (1)

Country Link
DE (1) DE2948097A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531059A1 (en) * 1985-08-30 1987-03-12 Gardena Kress & Kastner Gmbh MOTORIZED HAND DEVICE
EP3031315A1 (en) * 2014-12-09 2016-06-15 Robert Bosch Gmbh Garden device handle device
WO2016091547A1 (en) * 2014-12-09 2016-06-16 Robert Bosch Gmbh Machine tool operating device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3531059A1 (en) * 1985-08-30 1987-03-12 Gardena Kress & Kastner Gmbh MOTORIZED HAND DEVICE
EP3031315A1 (en) * 2014-12-09 2016-06-15 Robert Bosch Gmbh Garden device handle device
EP3031314A1 (en) 2014-12-09 2016-06-15 Robert Bosch Gmbh Garden device operating device
WO2016091547A1 (en) * 2014-12-09 2016-06-16 Robert Bosch Gmbh Machine tool operating device
WO2016091498A1 (en) * 2014-12-09 2016-06-16 Robert Bosch Gmbh Garden-implement-handle device
CN106998649A (en) * 2014-12-09 2017-08-01 罗伯特·博世有限公司 Garden instrument grip device
EP3031314B1 (en) 2014-12-09 2021-10-13 Robert Bosch GmbH Garden device operating device

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Legal Events

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8110 Request for examination paragraph 44
8131 Rejection