EP0328922A2 - Jeu de transformation pour une scie circulaire pour travail manuel - Google Patents

Jeu de transformation pour une scie circulaire pour travail manuel Download PDF

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Publication number
EP0328922A2
EP0328922A2 EP89101551A EP89101551A EP0328922A2 EP 0328922 A2 EP0328922 A2 EP 0328922A2 EP 89101551 A EP89101551 A EP 89101551A EP 89101551 A EP89101551 A EP 89101551A EP 0328922 A2 EP0328922 A2 EP 0328922A2
Authority
EP
European Patent Office
Prior art keywords
circular saw
saw
conversion device
main bearing
bearing plate
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.)
Granted
Application number
EP89101551A
Other languages
German (de)
English (en)
Other versions
EP0328922A3 (fr
EP0328922B1 (fr
Inventor
Willy Kress
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.)
Kress Elektrik GmbH and Co Elektromotorenfabrik
Kress Elektrik GmbH and Co
Original Assignee
Kress Elektrik GmbH and Co Elektromotorenfabrik
Kress Elektrik GmbH and Co
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 Kress Elektrik GmbH and Co Elektromotorenfabrik, Kress Elektrik GmbH and Co filed Critical Kress Elektrik GmbH and Co Elektromotorenfabrik
Priority to AT89101551T priority Critical patent/ATE99204T1/de
Publication of EP0328922A2 publication Critical patent/EP0328922A2/fr
Publication of EP0328922A3 publication Critical patent/EP0328922A3/fr
Application granted granted Critical
Publication of EP0328922B1 publication Critical patent/EP0328922B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25F—COMBINATION OR MULTI-PURPOSE TOOLS NOT OTHERWISE PROVIDED FOR; DETAILS OR COMPONENTS OF PORTABLE POWER-DRIVEN TOOLS NOT PARTICULARLY RELATED TO THE OPERATIONS PERFORMED AND NOT OTHERWISE PROVIDED FOR
    • B25F3/00—Associations of tools for different working operations with one portable power-drive means; Adapters 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
    • B27B17/0016—Devices to adapt the chain saw for other purposes, e.g. drilling
    • 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
    • B27B9/00—Portable power-driven circular saws for manual operation

Definitions

  • the invention relates to a conversion device for a circular saw according to the preamble of claim 1.
  • Circular saws in the usual form for example the type 6050/55 Kress of the applicant itself, which is particularly suitable for the purposes of the present invention, consist of a housing which supports an electric drive motor and, if appropriate, its gearbox, the power of the electric motor being relatively high compared to conventional electric hand tools , for example, can be located in the range of 1 kW.
  • the housing also has handles for guiding the circular saw, the longitudinal axis of the driving electric motor running transversely to the direction of advance of the circular saw, so that the circular saw blade is placed on the output shaft stub in a rotationally fixed manner without a deflection gear and is usually secured by a retaining screw of a suitable shape and structure.
  • such a circular saw has a saw foot, which can also be referred to as a saw table, and which can usually be changed on one side, both in terms of its distance from the housing, which changes the depth of cut of the circular saw, and can be tilted at predetermined angles, so that angular cuts are possible. Furthermore, it is possible through the foot or through guide means on the housing to use displaceable parallel stops, so that defined saw cuts can be carried out.
  • Such circular saws are suitable for sawing boards and. Like., But a depth of cut of more than 20 to a maximum of 30 mm can rarely be achieved.
  • chain saws are known in many forms and designs, for example as chainsaws driven by an internal combustion engine or electric chain saws, which have the advantage of smoother running and easier handling, so that besides industrial use, such electric chain saws are also particularly good for private use, for example for preparing firewood, for sawing larger trees, etc. Like., Are suitable.
  • a variety of adapter devices u.
  • a motor of predetermined power with a suitable motor stop surface to different tool attachments or adapter arrangements can be set, for example by clicking, so that it is possible to drive a variety of individual tools by a common electric motor.
  • a hand-held circular saw comprises a large number of safety devices, mainly because of the comparatively high risk of injury associated with its handling, for example complete rigid, housing-fixed covering of the saw blade upwards and an additional pendulum protection hood, which also covers the saw blade when not in use and is increasingly folded away to the rear due to the material to be processed as the saw progresses.
  • Electric chain saws also differ significantly from circular saws in their basic form; For example, the electric chain saw has a horizontally facing saw blade around which the chain runs; in a hand-held circular saw, this area is completely rigidly encapsulated, so that a conversion is not possible for this reason alone.
  • the present invention is therefore based on the new object to provide a conversion device for a hand-held circular saw, which converts it into an electric chain saw that can be handled perfectly and with little effort.
  • the conversion device solves this problem with the characterizing features of the main claim and has the advantage that converting a conventional hand-held circular saw to an electric chain saw is possible in a matter of seconds, the electric chain saw created in this way fulfilling the same safety conditions as are normally placed on electric chain saws.
  • the conversion does not require disassembly or disassembly of the basic circular saw; it is only necessary to remove the circular saw blade, which makes the only screw that is required for the reassembly, namely the fastening screw for the circular saw blade, available. All that is then required is the chain saw adapter attachment attached to the handheld circular saw, which has been left unchanged, and after being pushed on of the chain sprocket on the output shaft to tighten this screw again. The conversion is then completely finished, and the electric chain saw is in a usable state, whereby additional advantages over conventional electric chain saws result from the fact that the circular saw foot is also unchanged in the new design.
  • the chainsaw adapter attachment carries all components and individual parts required for the operation of the chainsaw; including an oil tank and the appropriate means to ensure that the chainsaw is properly lubricated and that it slides along the blade guide.
  • the usual pendulum protection hood can be retained during the conversion; it is only pushed back for the conversion;
  • the saw blade is used as the main component of the new electric chain saw and is non-rotatable due to mechanical stops secured, whereupon then, as already mentioned, the entire adapter attachment is secured axially by fastening the shaft screw.
  • the measures listed in the subclaims permit advantageous developments and improvements of the conversion device specified in the main claim.
  • Particularly advantageous is the construction of the adapter attachment for the chainsaw in the form of a main bearing plate facing the hand-held circular saw basic device, which at the same time carries the means for mechanical locking or locking and supports the chain pinion and the saw blade driven by the output shaft of the hand-held circular saw.
  • a cover plate which stores the oil tank or merges into it in one piece and covers the parts located in the area of the drive pinion, so that, as is usual with electric chain saws, only the sword-guided working area of the saw chain is exposed in this case.
  • a rear safety splitting wedge can make the electric chain saw structure even more reliable.
  • the basic idea of the present invention is to convert a hand-held circular saw into an electromotive chain saw in that the sprocket driving the saw chain is placed and screwed directly onto the output shaft of the hand-held circular saw, which otherwise carries the circular saw blade, with a main bearing plate supporting the pinion being in a rotationally fixed position to the housing of the circular saw.
  • the hand-held circular saw 10 shown in FIG. 1 comprises an electric drive motor which cannot be seen in this view and which usually drives the circular saw blade (not shown) via an intermediate gear, which is held on the transmission output shaft by means of the saw blade holding flanges or spacers and a lock nut 41 .
  • the basic structure of such a hand-held circular saw is completed by a saw foot 13 which has adjustment means 14a, 14b on both sides for setting the saw depth, making angular cuts or for receiving a rip fence at 15, and a conventional one Pendulum protection hood 16, which in the illustration shown in FIG. 1 is withdrawn up to a stop formed by a longitudinal projection 17, a small handle 18 allowing the pendulum protection hood to be rotated by manual intervention by the user.
  • Such a conventional hand-held circular saw 10 according to FIG. 1 is the starting device for converting to an electric chain saw, wherein only the saw blade fastened with the screw 12 can be removed; a job that can be carried out by any user of a circular saw and occasionally also has to be carried out, for example for sharpening, converting to a different tooth shape and. the like
  • the chain saw adapter attachment to be connected to the hand-held circular saw 10 in FIG. 1 is shown in FIG. 2 and designated by 20.
  • An essential component of the adapter attachment 20 is a base plate or main bearing plate 21 (see FIG. 3), which supports the pinion 24 driving the saw chain 11 through a bearing 23 inserted in a central bore 22.
  • the pinion is removed after removing the circular saw blade with its (one-piece) spindle 24 'on the shaft end 26 of the circular saw 10, wherein an inner flat drive can be formed on the spindle, so that it sits on the output shaft rotatably.
  • first angle (not at the front) projecting to the right on the back of the main bearing plate, i.e. in the illustration of FIG. 3 shown), which can be an integral part of the main bearing plate or fastened to it in a suitable manner, for example screwed, and projects in the direction of the facing parts of the circular saw so that there is a support against rotation using the gear housing as a stop; preferably a second obliquely downward angle can be provided (not shown), which then forms a general U-shape with the first angle and encompasses the gear housing from the other side.
  • the chainsaw sword 27 is also fastened to the main bearing plate 21, specifically on a lower leg 28 projecting to the left in the plane of the drawing in FIG. 3.
  • the leg 28 can have an opening 29 for the sword 27, in which the sword is inserted; the fixation takes place, for example, with the aid of two screws 30, which can be guided in the longitudinal holes of the sword for the longitudinal adjustability of the sword 27 and for tensioning the chain.
  • a cover plate 31 which is fastened to the main bearing plate by means of spacing means which simultaneously determine the distance to the main bearing plate, for example spacer bolts.
  • spacer bolts for example, three spacer bolts or other spacing means can be provided, which are composed of a chain catch bolt 32, a locking bolt or retaining pin 33 and a further spacer bolt 34, the chain catch bolt 32 and the further spacer bolt 34 each fulfilling dual tasks.
  • the chain catch bolt as its name suggests, also serves to catch a possibly tearing chain, so that it wraps around it and does not knock out, while the further spacer bolt 34 is also one of the two screws 34, 34 ', the hold and fix the safety riving knife 35 between the main bearing plate 21 and the cover plate 31.
  • the cover plate 31 carries the oil tank 36 required for lubricating the saw chain of the pinion and the sword sliding surfaces with an upper filler neck 36a; the oil tank 36 can be suitably attached to the Cover plate 31 may be attached; however, as in the exemplary embodiment shown, it can also be an integral part of the cover plate 31, for example welded to it.
  • a drip pipe 37 for the oiler is required for the conduction and transport of the oil.
  • This drip pipe is fastened to the main bearing plate 21 and runs within a groove 38 in the main bearing plate which can be seen from the rear view in accordance with FIG. 4; the drip pipe then extends forward in the upper area according to FIG. 3 in the direction of the tank and can be inserted there into a tank outlet opening, for example sealed by an O-ring.
  • the drip pipe then emerges again by passing through the main bearing plate and directing its end directly onto the sword guide and the chain driver.
  • Suitable throttling means not shown, in conjunction with the viscosity of the oil determine its flow rate (not shown).
  • the front cover plate 31 that is to say facing away from the hand-held circular saw basic device, has a larger area than the main bearing plate, so that it also the adjacent area, that is to say the area previously free for the circular saw blade in the basic circular saw device and also accommodates the small hand lever 18 of the pendulum protection hood 16 in a side slot opening 38, so that the latter is in its position in the retracted position when the device is converted to an electric chainsaw remains locked.
  • the sword 27 has a deflecting star at the end opposite the driving pinion 24, which is not shown separately.
  • Such a construction of a chainsaw adapter attachment enables a very simple assembly on the basis of a conventional hand-held circular saw, in which after the circular saw blade has been removed, the saw foot is first set to a low depth of cut (stop), then the pendulum guard hood is pushed backwards and the adapter attachment with saw blade inserted from above and pressed onto the gear housing of the circular saw, whereby at the same time the transmission output shaft penetrates into the receiving spindle 24 'of the drive pinion; After inserting a spacer 40 (see FIG. 3), the locking screw 41 shown only partially in this figure is screwed and tightened onto the shaft end which then emerges freely on the other side of the pinion 24.
  • the hand-held circular saw has now been converted into an electric chain saw and is now ready for use.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Sawing (AREA)
  • Drilling Tools (AREA)
  • Golf Clubs (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
EP89101551A 1988-02-18 1989-01-30 Jeu de transformation pour une scie circulaire pour travail manuel Expired - Lifetime EP0328922B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT89101551T ATE99204T1 (de) 1988-02-18 1989-01-30 Umbauvorrichtung fuer eine handkreissaege.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3805041 1988-02-18
DE3805041A DE3805041C1 (fr) 1988-02-18 1988-02-18

Publications (3)

Publication Number Publication Date
EP0328922A2 true EP0328922A2 (fr) 1989-08-23
EP0328922A3 EP0328922A3 (fr) 1991-01-16
EP0328922B1 EP0328922B1 (fr) 1993-12-29

Family

ID=6347649

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89101551A Expired - Lifetime EP0328922B1 (fr) 1988-02-18 1989-01-30 Jeu de transformation pour une scie circulaire pour travail manuel

Country Status (5)

Country Link
US (1) US4821415A (fr)
EP (1) EP0328922B1 (fr)
AT (1) ATE99204T1 (fr)
DE (2) DE3805041C1 (fr)
ES (1) ES2049765T3 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4945637A (en) * 1989-01-06 1990-08-07 Pro Power Corporation Power-driven chain saw
US5001958A (en) * 1989-03-08 1991-03-26 Hall Richard D Apparatus for preparing skived belting
US5077896A (en) * 1991-08-16 1992-01-07 Rivera Jess R Adapter for converting a circular saw to a beam cutting chain saw
DE20120984U1 (de) * 2001-12-27 2002-04-11 Trumpf Gruesch Ag Gruesch Maschine zum schneidenden Bearbeiten von plattenartigen Werkstücken, insbesondere von Sandwichplatten
SE530792C2 (sv) * 2007-01-18 2008-09-16 Log Max Ab Anordning för uppfångning av en brusten sågkedja
US9168188B2 (en) 2007-11-13 2015-10-27 Orthopediatrics Corporation Cast removal system
US8118018B1 (en) * 2008-03-14 2012-02-21 The John T. Sherment Trust Horizontal concrete saw attachment
CA2769321C (fr) 2009-07-31 2018-05-01 Husqvarna Ab Scie murale et ensembles interchangeables pour scies murales
DE102011005017A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Tragbare Werkzeugmaschine
DE102011005019A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Werkzeugmaschinensystem
DE102011005018A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Werkzeugmaschinensystem
DE102011005015A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Werkzeugmaschinensystem
DE102011005039A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Werkzeugmaschinensystem
CN105350750B (zh) * 2015-10-08 2017-08-04 杭州电子科技大学 一种墙壁线盒安装用专用挖槽机
DE202015008829U1 (de) * 2015-12-22 2016-02-02 Harald Adelhardt Schnittschutzbügel für handgeführte Kettensäge auf Baustellen u. stat. Arbeitsstellen

Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839097A (en) * 1956-05-07 1958-06-17 Edward C Mosesian Chain saw attachment for portable circular saw
US2860671A (en) * 1956-12-24 1958-11-18 Edward C Mosesian Chain saw attachment for portable circular saws
US2879814A (en) * 1957-05-21 1959-03-31 Omark Industries Inc Attachment for converting a portable circular saw to a chain saw
FR1275189A (fr) * 1959-11-27 1961-11-03 Skil Corp Agencement pour accoupler une perceuse à moteur avec un outil sans moteur
US4033035A (en) * 1976-08-03 1977-07-05 Trimmer David G Beam cutting and mitering device
GB2042975A (en) * 1979-02-26 1980-10-01 Omark Industries Inc Chain saw guard
GB2042974A (en) * 1979-02-26 1980-10-01 Omark Industries Inc Chain saw
US4382334A (en) * 1981-07-01 1983-05-10 Omark Industries, Inc. Chain saw device
CA1160543A (fr) * 1981-10-23 1984-01-17 Campbell W. Jones Accessoire a mortaiser pour scie radiale
GB2168646A (en) * 1984-12-21 1986-06-25 Professional Hunting & Point B Chain saw with demountable blade assembly
US4649644A (en) * 1985-06-07 1987-03-17 Hudd Enterprises Circular saw conversion adapter

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2839097A (en) * 1956-05-07 1958-06-17 Edward C Mosesian Chain saw attachment for portable circular saw
US2860671A (en) * 1956-12-24 1958-11-18 Edward C Mosesian Chain saw attachment for portable circular saws
US2879814A (en) * 1957-05-21 1959-03-31 Omark Industries Inc Attachment for converting a portable circular saw to a chain saw
FR1275189A (fr) * 1959-11-27 1961-11-03 Skil Corp Agencement pour accoupler une perceuse à moteur avec un outil sans moteur
US4033035A (en) * 1976-08-03 1977-07-05 Trimmer David G Beam cutting and mitering device
GB2042975A (en) * 1979-02-26 1980-10-01 Omark Industries Inc Chain saw guard
GB2042974A (en) * 1979-02-26 1980-10-01 Omark Industries Inc Chain saw
US4382334A (en) * 1981-07-01 1983-05-10 Omark Industries, Inc. Chain saw device
CA1160543A (fr) * 1981-10-23 1984-01-17 Campbell W. Jones Accessoire a mortaiser pour scie radiale
GB2168646A (en) * 1984-12-21 1986-06-25 Professional Hunting & Point B Chain saw with demountable blade assembly
US4649644A (en) * 1985-06-07 1987-03-17 Hudd Enterprises Circular saw conversion adapter

Also Published As

Publication number Publication date
EP0328922A3 (fr) 1991-01-16
DE58906509D1 (de) 1994-02-10
DE3805041C1 (fr) 1989-05-18
EP0328922B1 (fr) 1993-12-29
ES2049765T3 (es) 1994-05-01
US4821415A (en) 1989-04-18
ATE99204T1 (de) 1994-01-15

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