EP0290483B1 - Logement pour scies a chaine a moteur - Google Patents

Logement pour scies a chaine a moteur Download PDF

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Publication number
EP0290483B1
EP0290483B1 EP87906076A EP87906076A EP0290483B1 EP 0290483 B1 EP0290483 B1 EP 0290483B1 EP 87906076 A EP87906076 A EP 87906076A EP 87906076 A EP87906076 A EP 87906076A EP 0290483 B1 EP0290483 B1 EP 0290483B1
Authority
EP
European Patent Office
Prior art keywords
saw
cover
chain
casing
mounting
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.)
Expired - Lifetime
Application number
EP87906076A
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German (de)
English (en)
Other versions
EP0290483A1 (fr
Inventor
Franz Rebhan
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to AT87906076T priority Critical patent/ATE51793T1/de
Publication of EP0290483A1 publication Critical patent/EP0290483A1/fr
Application granted granted Critical
Publication of EP0290483B1 publication Critical patent/EP0290483B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/14—Arrangements for stretching the chain saw
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
    • B27B17/00—Chain saws; Equipment therefor
    • B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
    • B27B17/083—Devices for arresting movement of the saw chain

Definitions

  • the invention relates to a housing for a motor chain saw with a drive unit which drives the saw chain rotating over the saw rail via a chain wheel, with a fastening device consisting of two fastening bolts penetrating an elongated hole opening formed in the saw rail and a saw chain pretensioning device arranged in the region of the rail holding device and a fastening device which can be fastened to the housing.
  • a fastening device consisting of two fastening bolts penetrating an elongated hole opening formed in the saw rail and a saw chain pretensioning device arranged in the region of the rail holding device and a fastening device which can be fastened to the housing.
  • sprocket cover overlapping and covering the sprocket and the rail mounting device.
  • a housing divided into two or more parts in which a drive unit, for example an internal combustion engine or an electric motor, is arranged, which drives the saw chain rotating over the saw rail via a chain wheel.
  • the saw rail which is also called the saw bar, is provided with an elongated hole opening into which two fastening bolts arranged on the housing engage. the saw rail is held by means of fastening nuts screwed onto the fastening bolts.
  • the saw bar is moved to tension the saw chain. This is done by loosening the saw rail fastening screws and actuating a saw chain tensioning device for displacing the saw rail, the fastening bolts being displaced within the slot opening.
  • the saw rail fastening nuts serve at the same time to fasten the sprocket cover which overlaps and covers the sprocket and the rail mounting device. If the chain is now to be replaced, it is necessary not only to loosen the rail fastening nuts, but to unscrew them completely from the fastening bolts so that the sprocket cover can be removed. There is a risk that the fastening nuts will be lost, especially when working in the forest. In addition, the handling of such a motor chain saw when changing the chain is extremely complicated, since with the sprocket cover removed, the saw rail is also no longer fastened and is held loosely on the fastening bolt, so that an arrangement of the saw chain around the saw rail is only possible with difficulty.
  • the saw rail It would therefore be desirable for the saw rail to be relatively firm but adjustable and to be attached to the housing with the mounting nuts attached when the saw chain is placed on it. So far this has not been possible because the sprocket cover is already installed in this state.
  • the known saws have the disadvantage that the chain tensioner is often destroyed if the saw chain is placed inaccurately on the saw rail and the clamping screws are subsequently tightened.
  • the chain tensioning device should be operable through the sprocket cover from the mounting side.
  • the sprocket cover is already installed when the tensioning device can be actuated (DE-OS 33 01 367).
  • a saw chain tensioning device that can be actuated without problems when the sprocket cover is removed is not yet known.
  • the invention is intended to form a rail mounting device on the housing of a motor chain saw so that when the saw chain is placed on it, the saw rail is already held relatively firmly and is adjustable via the saw chain tensioning device.
  • the known tilting of the sword should be completely avoidable during assembly.
  • a housing for a motor chain saw is provided with a drive unit which drives the saw chain rotating over the saw rail via a chain wheel, with a fastening device consisting of two fastening bolts penetrating an elongated hole opening formed in the saw rail and a saw chain tensioning device arranged in the area of the rail holding device and one on the housing attachable, the sprocket and the rail mounting device overlapping and covering sprocket cover proposed, in which it is provided according to the invention that the sprocket cover is formed in two parts and consists of a protective cover and a tensioning cover, the tensioning cover having two openings penetrable by the bolts and via which on the bolts arrangable saw rail fastening nuts can be held.
  • the protective cover in the area of contact of the protective cover with the clamping cover has a mounting strip which is designed and arranged to engage underneath the clamping cover. This enables the protective cover to be held securely on the clamping cover.
  • the tensioning cover is preferably provided with a pin which passes through the tensioning cover and is rotatably fastened in it, which has a drive on its one end facing the housing outside and two engagement webs projecting perpendicularly to the longitudinal axis of the bolt, and that the protective cover in the mounting strip has an elongated hole-like opening has through which the end of the bolt carrying the engaging webs can be reached.
  • a quick-release fastener has been created, which enables the protective cover to be installed and removed quickly from the tensioning cover.
  • the fastening bolt is advantageously acted upon by a compression spring and the inside of the mounting strip of the tensioning cover is provided with an engagement profile, so that unintentional loosening of the quick-release fastener can be avoided.
  • the protective cover is preferably provided with a number of fastening screws which pass through the protective cover and are rotatably fastened therein and can be engaged in corresponding threaded bores in the housing. These additional fastening screws enable the protective cover to be fastened to the housing, so that ice-tight protection against injuries from a possibly jumping chain is ensured even when the housing parts are subjected to extreme loads.
  • the bolt in a housing of the type mentioned in the introduction, has at its end, which protrudes into the elongated hole, a gear wheel which is arranged in mesh with a rack arranged in the elongated hole.
  • a gear wheel which is arranged in mesh with a rack arranged in the elongated hole.
  • a housing of a motor chain saw designated by 100 is shown, which has in its side region with a sprocket cover 10 covering the sprocket 11 and the rail mounting device 17.
  • the sprocket cover 10 consists of a protective cover 20 and a tension cover 30, which together form the sprocket cover 10, which overall has a shape corresponding to the known sprocket covers.
  • the clamping cover 30 has openings 12a, 13a through which the bolts 12, 13 of the rail mounting device 17 pass.
  • the clamping cover 30 is held on the bolts 12, 13 by means of the rail fastening nuts 12b, 13b placed on the bolts 12, 13.
  • the protective cover 20 has in the area of contact B of the protective cover 20 with the clamping cover 30 a mounting strip 30a which engages under the clamping cover 30 in the region of its edge region 32.
  • a bolt 40 is provided in the edge region 32 of the clamping cover 30, which has a drive 42 on its one end 41 facing the housing outside 31. This can be designed as a screw head for a screwdriver or as a hexagon or hexagon socket for the engagement of a wrench.
  • the bolt 40 has at its other end 43 two engagement webs 44, 45 projecting perpendicularly to the longitudinal axis L of the bolt, which can be inserted into a slot-like opening 36 in the mounting strip 30a of the protective cover 20.
  • the side of the mounting strip 30a facing the inside of the housing is provided with an engagement profile 37 in the region of the opening 36.
  • the engagement webs 44, 45 are guided into and held by the engagement profile 37, so that the bolt 40 cannot be released. Since the Bolt 40 in the clamping cover 30 is arranged through this and rotatably attached to it, the protective cover 20 is connected to the clamping cover 30 with a fast-acting closure.
  • the protective cover 20 is additionally fastened by screws 50, 51, 52 countersunk in the cover surface.
  • the tensioning cover 30 is also provided with the saw chain tensioning device 18. This is actuated by a bolt 60 which is also arranged in the clamping cover 30, and a rotation in the X direction of the saw rail 15 can be carried out by rotating the bolt 60.
  • the pin 60 is arranged between the pins 12, 13 and rotatably mounted in the housing 100, which carries a drive 62 on its one end 61 facing the outside of the housing.
  • This can be designed as a screw head for the engagement of a screwdriver or as a hexagon or hexagon socket.
  • the bolt 60 carries a gear wheel 65 which, when the saw rail 15 is placed on the bolts 12, 13, meshes with a toothed rack 70 arranged above the slot opening 16.
  • the embodiment according to FIG. 5 provides that the somewhat smaller gear 165 meshes with a toothed rack 170 arranged in the elongated hole opening 16 when the saw rail 15 is placed on the bolts 12, 13. It is also possible to have two racks 70; 170 to arrange. If now the gears 65; 165 are rotated via the bolt 60, the saw rail 15 is displaced in the area predetermined by the bolts 12, 13 and the elongated hole opening 16, as is indicated in FIG. 5 in the elongated hole 16.
  • the formation of the saw chain tensioning device 18 by means of the gear / rack combination is, however, only to be seen as an exemplary embodiment. It is also possible to arrange a stepping gear (not shown in the drawing) on the bolt 60 and to connect this in a suitable manner to the saw rail. It is essential that the saw chain tensioning device can be actuated when the tensioning cover 30 is installed.
  • the sprocket cover 10 also consists of a protective cover 20 and a clamping cover 30, which together form the sprocket cover 10.
  • the clamping cover 30 is held by the bolts 12, 13 which pass through the openings 12a, 13a and onto which the rail fastening nuts 12b, 13b are screwed.
  • the protective cover 20 in the area B of contact of the protective cover 20 with the clamping cover 30 has a mounting strip 30a which engages under the clamping cover 30 in the region of its edge region 32.
  • a mounting sleeve 22 is arranged in a cover-fixed manner and has a longitudinal slot 23.
  • the housing 200 is provided with a housing opening 24a and a mounting plate 27 fixed to the housing so that when the protective cover 20 is attached to the housing, a mounting bolt 24 can be inserted through the housing opening 24a and through the mounting sleeve 22, the hook-shaped foot part 25 of the mounting bolt 24 in the longitudinal slot 23 of the mounting sleeve 22 is guided.
  • the mounting bolt 24 is dimensioned in length so that it can reach through and under with its hook-shaped base part 25 through the access opening 27a of the mounting plate 27, the hook-shaped base part can be slid over a catch 27b on the mounting plate 27 when the mounting bolt head 26 rotates is so that the mounting bolt 24 is locked by the catch 27b and prevented from rotating. In this position, the hook-shaped foot part 25 simultaneously acts on the ignition interruption switch 28, the ignition not being interrupted when it is acted upon.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)

Abstract

Afin d'obtenir un dispositif de support des rails sur le logement d'une scie à chaîne à moteur qui permette de retenir le rail de a scie de façon relativement ferme lors du montage de a chaîne de la scie et de l'ajuster à l'aide du dispositif de serrage de la chaîne de la scie, le logement d'une scie à chaîne à moteur comprend une unité motrice pour entraîner par l'intermédiaire d'une roue à chaîne la chaîne de la scie qui tourne sur le rail de la scie, un dispositif de fixation du rail ayant deux boulons de fixation qui traversent une fente allongée formée dans le rail de la scie, un dispositif de serrage de la chaîne de la scie agencé dans la zone du dispositif de fixation du rail et un couvercle de la roue à chaîne attachable au logement qui recouvre la roue à chaîne et le dispositif de fixation du rail. Le couvercle (10) de la roue à chaîne est formé en deux parties, un couvercle de protection (20) et un couvercle de serrage (30). Le couvercle de serrage (30) comprend deux orifices (12a, 13a) traversés par les boulons (12, 13) et peut être fixé par des écrous (12b, 13b) de fixation du rail de la scie qui viennent se visser sur les boulons (12, 13).

Claims (8)

1. Carcasse pour une tronçonneuse à chaîne à moteur avec une unité de commande commandant la chaîne à scier en rotation sur le rail de la scie par l'intermédiaire d'une roue à chaîne avec un dispositif de fixation du rail comprenant deux boulons de fixation qui s'engrènent dans la découpure en trou oblong formée dans le rail de la scie, avec un dispositif de tension de la chaîne à scier disposé dans la zone du dispositif de fixation du rail et avec un couvercle de la roue à chaîne pouvant être fixé sur la carcasse et s'engrenant sur la roue à chaîne et le dispositif de fixation du rail et les recouvrant, caractérisée en ce que le couvercle de la roue à chaîne (10) est formé en deux parties et qu'il comporte un couvercle de protection (20) et un couvercle de tension (30), le couvercle de tension (30) présentant deux découpures (12a, 13a) pouvant être pénétrées par les boulons (12, 13) et pouvant être fixé par les écrous de fixation (12b, 13b) du rail de la scie qui peuvent être disposés sur les boulons (12, 13).
2. Carcasse selon la revendication 1, caractérisée en ce que le couvercle de protection (20) présente, dans la zone de contact (B) du couvercle de Protection (20) avec le couvercle de tension (30), une baguette de fixation (30a) qui est formée et disposée en s'engrenant avec le couvercle de tension (30) par le bas.
3. Carcasse selon la revendication 1 ou 2, caractérisée en ce que le couvercle de tension (30) est pourvu d'un boulon (40) qui s'engrène avec le couvercle de tension (30) et qui est fixé en étant rotatif dans celui-ci, boulon qui présente une commande (42) à son extrémité (41) tournée vers la face extérieure (31) de la carcasse et deux barrettes d'engrènement (44, 45) en saillie verticale par rapport à l'axe longitudinal (1) du boulon à son autre extrémité (43) et que le couvercle de protection (20) présente, dans la baguette de fixation (30a), une découpure (36) du type trou oblong par laquelle l'extrémité (43) du boulon (40) qui porte les barrettes d'engrènement (44, 45) peut s'engrener.
4. Carcasse selon l'une des revendications 1 à 3, caractérisée en ce que le couvercle de protection (20) est pourvu d'un certain nombre de vis de fixation (50, 51, 52) qui s'engrènent dans le couvercle de protection (20), qui sont fixées dans celui-ci en étant rotatives et qui peuvent s'engrener dans des découpures filetées correspondantes, formées dans la carcasse (100).
5. Carcasse selon la revendication 1 ou 2, caractérisée en ce que le couvercle de protection (20) porte, sur sa face intérieure (21) opposée à la . face extérieure (31) de la carcasse, une douille de fixation (22) qui présente une fente longitudinale (23), qu'un boulon de fixation (24) peut, après avoir traversé un orifice (24a) de la carcasse, traverser la douille de fixation (22), qu'une plaque de fixation (27), qui est fixe sur la carcasse, peut être traversée par une partie de base (25) en forme de crochet qui s'engrène avec elle et que le boulon de fixation (24) peut être bloqué avec la tête (26) du boulon de fixation sur la carcasse et avec la partie de base (25) en forme de crochet sur la plaque de fixation (27) pour la fixation du couvercle de fixation (20) sur la carcasse (200).
6. Carcasse selon la revendication 5, caractérisée en ce qu'un disjoncteur de désamorçage (28) est disposé sur la plaque de fication (27) dans une zone d'impact de la partie de base (25) en forme de crochet.
7. Carcasse selon la revendication 1, caractérisée en ce que le couvercle de tension (30) présente deux découpures (12a, 13a) qui peuvent être pénétrées par les boulons (12, 13) et qu'il peut être fixé par les écrous de fixation (12b, 13b) du rail de la scie qui peuvent être disposés sur les boulons (12,13), qu'un boulon (60) est placé sur le couvercle de la roue à chaîne (10) en s'engrenant avec celui-ci et en étant fixé de manière à être rotatif dans celui-ci, boulon qui porte une commande (62) à l'une de ses extrémités (61) tournée vers la face extérieure (31) de la carcasse et qui présente, à son autre extrémité (63), qui fait saillie dans la zone de la découpure en trou oblong (16) du rail de la scie (15), une roue dentée (65), la roue dentée (65) étant disposée en coopérant avec une crémaillère (70) disposée sur le rail de la scie (15).
8. Carcasse selon la revendication 7, caractérisée en ce que le boulon (60) présente, à son extrémité (63) qui entre dans la découpure en trou oblong (16), une roue dentée (165) qui est disposée en coopérant avec une crémaillère (170) disposée dans la découpure en trou oblong (16).
EP87906076A 1986-11-25 1987-09-23 Logement pour scies a chaine a moteur Expired - Lifetime EP0290483B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT87906076T ATE51793T1 (de) 1986-11-25 1987-09-23 Gehaeuse fuer eine motorkettensaege.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19863640162 DE3640162A1 (de) 1986-11-25 1986-11-25 Gehaeuse fuer eine motorkettensaege
DE3640162 1986-11-25

Publications (2)

Publication Number Publication Date
EP0290483A1 EP0290483A1 (fr) 1988-11-17
EP0290483B1 true EP0290483B1 (fr) 1990-04-11

Family

ID=6314674

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87906076A Expired - Lifetime EP0290483B1 (fr) 1986-11-25 1987-09-23 Logement pour scies a chaine a moteur

Country Status (5)

Country Link
US (1) US4939842A (fr)
EP (1) EP0290483B1 (fr)
JP (1) JPH01501379A (fr)
DE (2) DE3640162A1 (fr)
WO (1) WO1988003858A1 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE469825B (sv) * 1990-03-28 1993-09-27 Electrolux Ab Kedjespännanordning på motorsåg
USD377441S (en) * 1995-08-03 1997-01-21 Andreas Stihl Motor-driven chain saw
SE511283C2 (sv) * 1997-06-04 1999-09-06 Sandvik Ab Sträckmekanism och sågsvärd för kedjesågar
DE19737886C1 (de) * 1997-08-29 1998-12-24 Dolmar Gmbh Motorkettensäge mit einem zwischen dem Gehäuse und einem Spannteil geklemmt gehaltenen Sägeschwert
CA2303675A1 (fr) * 2000-04-03 2001-10-03 Joseph Gerald Ronald Paquin Dispositif protecteur de scie a chaine
US20040060178A1 (en) * 2002-10-01 2004-04-01 Mark Willer Circular saw
US20070054542A1 (en) * 2005-09-06 2007-03-08 Champlin David E Uni-body power tool
US20070056168A1 (en) * 2005-09-15 2007-03-15 Mclaughlin Michael J Chain saw tool holder
USD741678S1 (en) 2012-04-13 2015-10-27 Andreas Stihl Ag & Co. Kg Chain saw for cutting stone
USD744308S1 (en) 2012-08-02 2015-12-01 Andreas Stihl Ag & Co. Kg Chainsaw
USD763051S1 (en) 2014-04-04 2016-08-09 Andreas Stihl Ag & Co. Kg Chainsaw
CN104068979B (zh) 2014-07-11 2016-10-26 杨为忠 医疗康复床
USD790303S1 (en) 2015-08-06 2017-06-27 Andreas Stihl Ag & Co. Kg Cordless chainsaw
USD826021S1 (en) 2016-02-15 2018-08-21 Andreas Stihl Ag & Co., Kg Chain saw
JP6648829B2 (ja) * 2016-06-27 2020-02-14 工機ホールディングス株式会社 チェンソー

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Publication number Priority date Publication date Assignee Title
GB190901894A (en) * 1909-01-26 1910-01-20 Heinrich Johann Bosse Improvements in Chain-saws.
US1046169A (en) * 1912-03-27 1912-12-03 Charles Leo Frederick Belt-shifter.
US2670017A (en) * 1948-11-29 1954-02-23 Max H Fiest Tensioning means for poweroperated chain saws
SE348964B (fr) * 1969-10-29 1972-09-18 Jonsereds Fabrikers Ab
US3636995A (en) * 1970-07-02 1972-01-25 Textron Inc Tensioner for saw chain
US3870125A (en) * 1973-02-02 1975-03-11 Textron Inc Guide bar oiling system for chain saw
GB1445819A (en) * 1974-03-01 1976-08-11 Meggitt Eng Ltd Meat material cutting bandsaw
US3974566A (en) * 1975-09-08 1976-08-17 Mcculloch Corporation Method and apparatus for arresting movement of a chain saw cutter chain
US4117594A (en) * 1977-10-02 1978-10-03 Textron Inc. Guide bar mount for chain saw
DE3004588A1 (de) * 1980-02-08 1981-08-13 Fa. Andreas Stihl, 7050 Waiblingen Tragbare motorkettensaege
EP0076251A1 (fr) * 1980-08-08 1983-04-13 Black & Decker Inc. Manche nervure et protection pour tronconneuse
US4382334A (en) * 1981-07-01 1983-05-10 Omark Industries, Inc. Chain saw device
US4457650A (en) * 1982-01-04 1984-07-03 Tseng Tsiung Siung Reversible watertight type container securing assembly
DE3301367A1 (de) * 1983-01-18 1984-07-19 Fa. Andreas Stihl, 7050 Waiblingen Kettenspannvorrichtung fuer eine kettensaege
DE3527024A1 (de) * 1985-07-27 1987-01-29 Bosch Gmbh Robert Kettensaege mit einer tauchkolben-oelpumpe
US4819332A (en) * 1987-02-26 1989-04-11 Sugihara Rinki Co., Ltd. Oil supply structure of chain saw

Also Published As

Publication number Publication date
JPH01501379A (ja) 1989-05-18
DE3762199D1 (de) 1990-05-17
US4939842A (en) 1990-07-10
WO1988003858A1 (fr) 1988-06-02
EP0290483A1 (fr) 1988-11-17
DE3640162A1 (de) 1988-05-26

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