SE467402B

SE467402B - DEVICE IN MOTOR SAW

Info

Publication number: SE467402B
Application number: SE9003602A
Authority: SE
Inventors: F A G Doeragrip
Original assignee: Electrolux Ab
Priority date: 1990-11-12
Filing date: 1990-11-12
Publication date: 1992-07-13
Also published as: CA2054328A1; JPH05208402A; DE4137187A1; SE9003602D0; IT1269666B; DE4137187C2; SE9003602L; ITPN910074A0; ITPN910074A1

Description

467 402 Den asyftade egenskapen hos anordningen att fånga kedjan vid hastigt uppkomna kedjebrott och avhopp åstadkommes med en rulle 25 löst anbringad över gummielementet 18 i handtagsfästet ll. Rullen kan vara en rörbit av plast som hålls på plats av en fläns 26 som ansluter mot handtagets överdrag 27. 467 402 The intended property of the device for catching the chain in the event of rapidly occurring chain breaks and deflections is achieved with a roller 25 loosely mounted over the rubber element 18 in the handle bracket 11. The roller may be a piece of plastic tube held in place by a flange 26 which connects to the cover 27 of the handle.

Den är lätt roterbar på de i fästet ingående delarna och utsätts inte för nötning då den träffas. Förutom skvddseffekten vid kedjebrott tjänar rullen som hölje över delarna i fästet, som annars hade ett utsatt läge under arbete med sågen och lätt kunde ta skada.It is easily rotatable on the parts included in the bracket and is not exposed to abrasion when hit. In addition to the shear effect in the event of a chain break, the roller serves as a cover over the parts of the bracket, which otherwise had an exposed position during work with the saw and could easily be damaged.

Tack vare att rullen kan rotera förlängs dess livslängd avsevärt. l dess funktion ingår även att skydda avvibrationselement 18 från att rivas sönder av kedjans tänder vid ett kedjebrott alternativt avhopp. Det förhållandevis stora spelet 28 mellan rullens insida och handtagsfästets omkrets gör att handtaget får en viss rörlighet mot barkstödet 13 av sågkroppen, vilket mildrar vibrationerna i handtaget. ny*Thanks to the fact that the roller can rotate, its service life is considerably extended. Its function also includes protecting vibration elements 18 from being torn apart by the teeth of the chain in the event of a chain break or failure. The relatively large clearance 28 between the inside of the roller and the circumference of the handle bracket means that the handle has a certain mobility against the bark support 13 of the saw body, which alleviates the vibrations in the handle. new*

Claims

3,467,402 Patent claims

Device in a chainsaw provided with a front handle (10) in the form of a bracket across the chainsaw body and on each side of this bracket (l1, l2) for this handle with included anti-vibration element (18), one of the brackets of which is located under the saw's sword mount (15) where also a so-called The chain catcher (25) is arranged, characterized in that the chain catcher consists of a piece of pipe (25) which surrounds the vibration element in the handle bracket (11) arranged under the sword bracket, and that the pipe piece and the handle bracket have a play (28) between them. which allows the pipe piece to rotate on the bracket.

Device according to Claim 1, characterized in that the handle bracket is fastened to the saw body or to a part (13) connected thereto by a screw connection (19, 20).

Device according to claim 1, characterized in that the movement of the pipe piece in the axial direction is limited by a flange (26) placed on the handle.

4. A device according to claim 2, characterized in that the handle in its bracket has elasticity against the saw body through the included vibration element and the clearance in the piece of pipe.