DE4038464A1

DE4038464A1 - Hand-operated pruning shears - has tensioned cord linking outer handle to shoulder to apply mechanical force when stretched and released

Info

Publication number: DE4038464A1
Application number: DE19904038464
Authority: DE
Inventors: Nikolaus Wendel
Original assignee: Individual
Current assignee: Individual
Priority date: 1990-12-03
Filing date: 1990-12-03
Publication date: 1992-06-11

Abstract

The hand held secateurs or pruning shears have two handles, with the lower area of the handle (1) further away from the body connected to the upper arm or shoulder of the user e.g. by means of a flexible tension band or cord (3) which can be guided at the end of the handle (2) lying on the thumb. ADVANTAGE - When cutting e.g. vines. As soon as the cutting force becomes too uncomfortable on the hand, the arm is stretched out and the force on the outer handle is taken over by the tension connection (3) between the handle and shoulder.

Description

Von Hand betätigte Astscheren werden vielfältig eingesetzt, insbesondere im Weinbau. Hier werden sie als Rebscheren bezeichnet.Manual pruning shears are used in a variety of ways, especially in viticulture. Here they are referred to as pruning shears.

Die Schnittkraft wird fast ausschließlich mit den Fingern der die Schere haltenden Hand aufgebracht. Die andere, freie Hand hält meist den zu schneidenden Ast oder ähnliches in die gewünschte Position.The cutting force is almost exclusively with the fingers of the hand holding the scissors. The other, free Hand usually holds the branch to be cut or similar in the desired position.

Die Handkraft ist sowohl in ihrer Stärke als auch in ihrer Ausdauer beschränkt. Insbesondere im Weinbau mit tagelangem Schneiden treten Verzögerungen ein, weil viele Äste nur noch von überdurchschnittlich starken Händen oder nur noch mit einer Säge geschnitten werden können. Außerdem treten häufig Verletzungen auf, wie Sehnenscheidenentzündungen oder ähnliche Überlastungsschäden.The hand strength is both in its strength and in its Endurance limited. Especially in winegrowing with days Cutting delays occur because many branches only of exceptionally strong hands or only with can be cut with a saw. Also kick common injuries, such as tendonitis or similar overload damage.

Zur Verbesserung wurden pneumatische und elektrische Scheren entwickelt. Diese benötigen aufwendige, teuere und schwere Energiesysteme wie Batterien, Kompressoren, Schläuche und sind selbst deutlich schwerer und erheblich teuerer als handbetätigte Scheren.Pneumatic and electric scissors were used for improvement developed. These require complex, expensive and heavy Energy systems such as batteries, compressors, hoses and are themselves significantly heavier and considerably more expensive than hand operated scissors.

Zusätzlich sind diese Scheren gefährlich und dürfen laut Berufsgenossenschaft nicht ohne Kettenhandschuhe benutzt werden.In addition, these scissors are dangerous and can be loud Professional association not used without chain gloves will.

Die Erfindung ermöglicht den Vorteil der handbetätigten, leichten, handlichen, preiswerten und sicheren Schere mit dem Vorteil der großen und sehnenschonenden Schnittkraft. Sobald die Schnittkraft an der Hand unkomfortabel groß wird oder gar nicht mehr ausreicht wird einfach der Arm gestreckt, und die Kraft am äußeren Griff (1) wird von der Zugverbindung (3) vom Griff zur Schulter übernommen.The invention enables the advantage of the manually operated, light, handy, inexpensive and safe scissors with the advantage of the large and tendon-friendly cutting force. As soon as the cutting force on the hand becomes uncomfortably large or is no longer sufficient, the arm is simply stretched and the force on the outer handle ( 1 ) is taken from the handle ( 3 ) from the handle to the shoulder.

Versuche mit einer Serien-Rebschere, die entsprechend Anspruch 8 der Erfindung mit Zugverbindung zur Schulter ausgerüstet wurde, ergaben einen gewaltigen Kraftunterschied zur normalen Betätigung. Äste, die von Hand nicht mehr geschnitten werden konnten, wurden von derselben Person mit einem schnellen Schnitt mühelos durchtrennt.Try a series of pruning shears that claim accordingly 8 of the invention equipped with a train connection to the shoulder resulted in a huge difference in strength compared to normal Activity. Knots that are no longer cut by hand were made by the same person with a quick Cut effortlessly.

Claims

1. Hand-held pruning shears with two cutting edges, which merge into two handles via a joint, characterized in that the lower region of the handle ( 1 ) which is further away from the body is connected to the upper arm or shoulder of the cutting person.

2. pruning shears according to claim 1, characterized in that the connection between the shoulder and the handle consists of a flexible but in the longitudinal direction of arm force practically inextensible drawstring or pull rope ( 3 ).

3. Lopper according to claim 2, characterized in that the band or rope is guided at the end of the handle lying on the thumb ( 2 ).

4. lopper according to claim 3, characterized in that the connection ( 3 ) between the outer handle ( 1 ) and shoulder in the area of the shears, in particular up to the guide ( 6 ) in the other handle ( 2 ) is not designed to be flexible.

5. pruner according to claim 1, characterized in that the length of the connection ( 3 ) between the handle ( 1 ) and shoulder can be adjusted.

6. Lopper according to claim 5, characterized in that the connection ( 3 ) at the attachment point ( 4 ) of the handle ( 1 ) can be snapped in and out with the fingers.

7. lopper according to claim 1, characterized in that the connection ( 3 ) is attached to the shoulder on a halter firmly seated on the body.

8. lopper according to claim 7, characterized in that the halter goes around both shoulder and chest runs and is stretched around the chest.

9. pruning shears according to claim 1, characterized in that the palm side handle ( 2 ) is connected via a cuff to the forearm in the area next to the wrist.