WO2007025503A1 - Scie a chaine equipee d'un dispositif de protection - Google Patents

Scie a chaine equipee d'un dispositif de protection Download PDF

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Publication number
WO2007025503A1
WO2007025503A1 PCT/DE2006/001406 DE2006001406W WO2007025503A1 WO 2007025503 A1 WO2007025503 A1 WO 2007025503A1 DE 2006001406 W DE2006001406 W DE 2006001406W WO 2007025503 A1 WO2007025503 A1 WO 2007025503A1
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WO
WIPO (PCT)
Prior art keywords
chain
sword
protective
housing
saw
Prior art date
Application number
PCT/DE2006/001406
Other languages
German (de)
English (en)
Inventor
Christian Seefluth
Original Assignee
Christian Seefluth
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 Christian Seefluth filed Critical Christian Seefluth
Publication of WO2007025503A1 publication Critical patent/WO2007025503A1/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27G—ACCESSORY MACHINES OR APPARATUS FOR WORKING WOOD OR SIMILAR MATERIALS; TOOLS FOR WORKING WOOD OR SIMILAR MATERIALS; SAFETY DEVICES FOR WOOD WORKING MACHINES OR TOOLS
    • B27G19/00—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws
    • B27G19/003—Safety guards or devices specially adapted for wood saws; Auxiliary devices facilitating proper operation of wood saws for chain saws

Definitions

  • the invention relates to a chain saw with a motor-driven, circulating on a sword chain, consisting of a built-in a housing with handles and control switches electric or internal combustion engine whose drive axle has a chain drive wheel, which those of the protruding from the housing and attached to the housing chain sword guided, at the upper Schwertrand from the housing out to the front and after passing through the deflection area at the front sword end at the lower Schwertrand in the work area returns running saw chain drives.
  • the invention is therefore an object of the invention to provide a motor-driven chainsaw, which is largely harmless to handle and in which the risk of injury is reduced sustainable. Another object is that due to the simplified handling and the versatility of the applications and thus an extension of the application is to be achieved in practice.
  • the trained on the chain sword and on the leading chain straight or in the deflection of the chain along running trained as a second sword or guard rail protection device is preferably by means of screw or other positive connection on chain link especially where the sword exits the housing, by means of two half-shell plates or a single side panel releasably secured.
  • the attachment can be easily such. be carried out by thumb screws that replacement of the protective rail against another with a different shape and
  • a further embodiment of the invention is that the protective device is formed in the deflection of the chain at the outer sword end by a protective cap by this is formed in the deflection of the chain as pluggable protective cover and - in order to create a free space for the circulating chain - in particular by means provided on both sides flat mott. Spacer on the sword - preferably by means of screwing and designated hole in the chain sword - is attached. In this way, the deflection is completely shielded, whereby the emergence of a return Shock of the chainsaw is effectively prevented during operation.
  • the protective device in the form of a second sword which is mounted at least in the leading portion of the chain from the housing to ümlenk Scheme the chain is flat, formed in the material thickness (thickness) maximum equal to the chain sword and the housing outlet portion of the chain sword, the housing itself the chain saw or alternatively both, the chain bar and the housing - in particular form-fitting and releasably - preferably by screwing and thus outside of the work area.
  • a material which corresponds to the consistency of the chain sword and this is thus equal in strength and rigidity and adjusted.
  • a - in particular additional - protective body is provided in the form of a bracket, which at the sword end - in particular in connection with the protective cap in the deflection - and in the region of the sword at the housing outlet by means of a half-shell attachment body located there on one or both sides, is preferably releasably attached.
  • This guard is at a certain distance to the Chain sword - especially in addition to the described second sword or guard rail.
  • the guard can be formed arbitrarily and preferably consists of light metal or plastic half shells, which are laterally attached to the chain bar at least one side - but preferably both sides - on the cap in the front deflection and the housing outlet region of the chain sword in particular releasably secured.
  • the additional protective device designed as a bracket is fastened to the protective cap of the front deflecting region and to the housing of the chain saw in a form-fitting and preferably detachable manner.
  • the protective body in the form of a bracket and the cap at the deflection are formed as a unit in HaIb- shell construction and at least on the housing of the chain saw - but especially in the deflection and at the housing exit area of the chain sword - positively and releasably attached.
  • a running or guide wheel for the additional chain guide is provided in a special embodiment of the invention, which is mounted in the half shells of the protective cap in the deflection region or in laterally mounted flange plates.
  • a tensioning device for the chain can be provided between the tolerance bearing axle of the sprocket and the housing of the protective cap as an abutment so that it can be tightened at any time in a simple manner - eg by operating a knurled wheel.
  • the longitudinal edges of the chain blade have in such an embodiment, a slight longitudinal constriction, which provides an additional slide for the free-running chain at the moment heavy load.
  • the protective body designed as a second blade or rail has a longitudinally extending groove in which an additional protective strip made of elastic or resilient material - in particular by gluing or riveting - is firmly attached.
  • This additional protection strip made of elastic material bends to the side during a violent contact or deforms and continues to reduce the risk of injury effectively.
  • the equipment according to the invention of the chain saw allows extended areas of application.
  • the chain saw may, for example, on the housing have a fastening device which is for a horizontal or vertical - preferably form-fitting - the same on a countertop, a work table or a frame by means of suitable shaping with holes or GeHouseausformungen, in particular with the aid of clamping devices designed.
  • the chain saw can be used stationary with vertical or horizontal sword position, without the running chain area being a danger for the operator or persons in the working environment.
  • the worktop can be about an axis tiltable (rotatable) to be able to use the vertical or horizontal position of the chain sword alternately can.
  • Such an application is of considerable importance particularly when sawing branches or lumber with a smaller diameter.
  • the clippings are introduced by the operator to the work area of the stationary mounted saw from below or horizontally and sawn at high operating speed.
  • the work area within the trained as a bracket protection device by the positive attachment of - at least on one side of the chain sword - backdrop-like side plates or - plates is reduced accordingly.
  • flat-shaped mounting body (side flange) are provided in some embodiments at the housing outlet, which are designed in particular as at least one side of the sword (vertical) extending or flanged extension of the protective device and preferably form a coherent unit with the protection device. But they can also be designed as a fastened by screwing separate Thisflansch- body.
  • a specific design of the protective device according to the invention is that instead of the above-mentioned protective strap an elastic band of any material, in particular made of thin steel (spring steel), plastic or in the form of a link belt is provided which on the primary protection device in shape a guided along the chain second sword in the execution of a flat body
  • a particular embodiment of the chain saw according to the invention further consists in the fact that the chain running back into the housing is also shielded in the working area by a protective rail which is in particular U-shaped in cross-section.
  • a protective rail preferably moves on a sliding guide in the lower housing area and can be withdrawn at any time - at the beginning of a saw cut - by the operator manually or at the push of a button electromagnetically or automatically by motor force to release the chain in the work area.
  • FIG. 1 shows a motor chain saw in a side view with attached to the sword and housing protection device in the form of a trained as a guard rail second sword
  • Fig. Ia shows a cross section through the sword and protective device in the area A - B according to Fig.l
  • Fig. Ib an embodiment according to Fig.l with shortened second sword
  • Fig. Ic an embodiment according to Fig.l with additional
  • FIG. 2a is a side view of the protective cap of FIG. 2 with folding device by means of hinge and quick release,
  • FIG. 2b shows a cross section through the protective cap according to Fig. 2a, 3 shows an embodiment with double attached to the chain sword guard rail with hinges and quick release,
  • FIG. 3a shows cross-sections according to FIG. 3 in the region of the housing-side side flange (cross-section A-B) of the protective device with hinges and quick-action closure,
  • FIG. 3b shows an embodiment according to FIG. 3 with an additional, adjustable guard bar
  • FIG. 4 shows a stationary saw mounted on a work surface chainsaw with protective rail and guard and reduction of the working area by a sliding plate - in a side view
  • FIG. 4a shows a stationary chain saw according to Figure 4 in the vertical position of the chain sword
  • FIG. 5 shows an embodiment with protective rail, guard and gate plate with reduced working area in side view
  • FIG. 5a is a plan view with protective bracket broadening measure FIG.
  • FIG. 6 shows a fixed stationary chainsaw in a vertical position with laterally and hingedly mounted in the work area mudguards
  • FIG. 6a shows the cross section in the chain sword area with hinged protection device according to FIG. 6, FIG.
  • FIG. 7 shows an embodiment of the chain saw with a second chain guide wheel in the front chain deflection in a lateral view
  • FIGS. 7a and 7b show a partial view with a second chain guide wheel in the area of the protective cap in FIG Chain deflection in side view and in longitudinal section,
  • FIG. 8 shows a side view of the embodiment with an elastic protective tape resting on the protective rail
  • FIG. 8b shows a protective band in the form of a link band or link chain in a resting state lying on the guard rail in a perspective side view.
  • Fig. 10 shows an embodiment according to Figure 9, however, with a run in a sliding device protection device for the returning chain.
  • a protective device a-4 designed as a flat body, second blade or protective rail is constructed above the leading saw chain a-14 which protrudes out of the housing and which is equal to or less than the chain bar a-2 in terms of material thickness and the housing fastening tongue a-52 protruding into the housing area and the screw connections a-22 preferably being detachably fastened.
  • the protective device a-4 extends into the front deflection of the saw chain, so that the known from practice, dangerous kickback by touching the saw chain with the sawing material in the chain deflection area a-37 is safely excluded. On a previously used rapid stop device of the chainsaw can thus be dispensed with.
  • the sawing or working area is thus formed exclusively by the returning saw chain a-15. From there, the saw can also perform deep, across the width of the sword a-2 and the protective device a-4 outgoing saw cuts, since the protective device a-4 in the material thickness is made as thin as or thinner than the chain sword.
  • the protective device a-4 may also be fastened by means of lateral flange body in the housing outlet region of the sword a-2, in particular by screwing. Such an embodiment is explained in more detail in Figure 3. Fig.
  • Ia shows a cross section of Fig.l in the area A - B of the chain sword, wherein it can be seen that the trained as a second sword guard rail a-4, the deep Penetration of the chainsaw into the respective clippings in no wise hindered.
  • the chain-side lower edge thereof may be obliquely ground or rounded.
  • the protective device in the form of a second sword which encloses in Fig.l the chain deflection, can be removed in a few steps and replaced with another shape or design of the second sword.
  • Fig. Ib a protection device is shown in a modified design.
  • Fig. Ic is above the protective device a-4, an elastically or resiliently formed, longitudinal elastic strip a-21, which is preferably glued in a groove in the protective rail a-4, to the upper edge of the protective device a-4 against injury on defuse.
  • the elastic strip a-21 bends in abrupt contact to the side or springs - executed in a two-layer design - a shock as shown in Figure Bl in Fig. Id from.
  • FIG. Id shows two embodiments of FIG. Ic with longitudinal elastic strips in cross section.
  • the elastic body a-21 are - as already mentioned - glued into a groove of the protective rail a-4 and can be additionally secured by countersunk rivets or screws.
  • the elastic body a-21 is shown in the representations A and B in the rest position and in Al and Bl in the event of a sudden contact in the resulting cushioning deformation.
  • FIG. Ie. This section of the chain link in side view shows an alternative design of the protective device a-4 in the front chain deflection, in which the protective device a-4 is additionally connected by means of laterally bent fastening tongues A-56 one-sided or two-sided form-fitting with the chain sword A-2 , Since the use of a cutting or sawing performance in the front deflection is rarely needed and only in special cases, this embodiment can be used for most sawing work with the chainsaw application.
  • Fig. 2 shows the embodiment of a chain saw, in which a backlash thereof by the protective cap b-3 is reliably prevented.
  • the clear width of the protective cap b-3 is dimensioned so that it can be slipped onto the chain bar b-2 with a circulating chain and by means of the inserted spacers b-l ⁇ on the chain bar b-2 without contact to the chain by means of the screws b-7 is releasably attached.
  • the protective cap b-3 is not plugged and screwed as shown in Figure 2, but by means of the hinge (hinge) b-38 folded and by guide pin (stud) b-40, which will be held in holes in the chain-link, will be fixed, while a clip b-39 pushed onto a short rail will serve on the opposite (upper) side of the cap b-3 to secure the attachment to the b-2.
  • the required spacers between cap b-3 and sword b-2 are constantly connected to the existing two hinged half shells cap b-3 or form part of the cap b-3.
  • FIG 3 shows a combination of FIGS. 1 and 2 with a simplified protective cap c-3, which forms a unit with the protective device c-4 and, as a result of the joints c-38, after the closure c-39 has been released Whole unfolded and removed in this simple way or can be reinstalled.
  • the protection device c-4 is positively fixed to the sword.
  • the protective device c-4 which preferably forms a unit with the part designed as a protective cap c-3 in the deflection region, is at the front End in the deflection of the chain thus by means of pins (studs) c-40 and the housing exit area of the chain bar through the side connecting plates (flange) c-51 also connected by the pin c-40 with the chain bar c-2 form-fitting and releasable.
  • the closing device c-39 is explained in more detail in Fig.3a.
  • the protective device c-4 also has a longitudinal elastic body - as a-21 in Fig. Ic - to further prevent any risk of injury in the sawing operation.
  • An articulated lever plate close to the handle for automatic rapid braking of the circulating chain during a kickback of the chain saw can therefore also be omitted in this embodiment, since a kickback of the saw is not possible.
  • the fastening of the second blade a-4 can in principle also be carried out as shown and described in FIG. 3:
  • projecting side flanges c-51 in FIG .3 is the second sword only on the chain sword form-fitting and preferably releasably attached.
  • FIG. 3 a cross-sections A and B in the chain-link area at the housing outlet and at the outer end of the blade c-2 in FIG. 3 -corresponds to the design of FIG. 3 and again shows the protective cap c-3 or the side flange embodiment c-51 , which is hinged at the bottom by means of the hinge (hinge) c-38 and thus by the standing bolt (pin) c-40 is fixed to the sword c-2.
  • the folding cap c-3 is held together at the top by means of an arbitrarily designed, designed here as a sliding closure positive locking or connection. In this way, a quick replacement or removal of the protective device c-4 is guaranteed.
  • the chain saw has a protective bow c-5 above the sword area, which bow is widened from above in the direction of the top and thus represents an additional protection for the person operating it.
  • the bow c-5 with respect to the distance to the sword on the guide rods c-35 is infinitely adjustable and fixed by means of the locking screws c-36 or in any other way, so that the guard c-5 are adjusted with respect to the required working height in the interior of the same can.
  • An elastic body along the protective rail c-4 can be dispensed with in this embodiment.
  • the protective rail c-4 prevents inadvertent reaching into the leading chain below the bracket c-5 during operation.
  • a work table or frame is releasably and positively connected and thus for new and expanded work areas (for example, for cutting medium knots thickness or timber) used.
  • the attachment can be done in any way, e.g. by means of clamp bodies d-29 and d-31, which are connected by wing screws d-28.
  • Lateral d-48 slide plates attached to the sword which can be made in different dimensions, reduce the working range of the returning chain to a desired level and increase safety by partially covering the chain.
  • the parts to be sawn such as branches, lumber or other woods are brought by the operator from below to the saw, with any type of injury risk through the guard rail and the bracket d-5 is largely off.
  • the slotted cover plates can also be made of plastic and fastened in different positions according to the holes d-47 in the sword.
  • the intermediate bodies d-l ⁇ on both sides of the sword provide the necessary distance between the chain and the guide plate d-48.
  • the slide plates can also be hung in the bracket d-5 and at the bottom edge
  • the intermediate body d-16 is permanently attached to a 9.kulisse and has studs (pins) which engage in the holes of the chain sword and fix the backdrop.
  • the start of the saw is preferably made by a foot switch, so that both hands of the operator are always free for the handling of the crop.
  • the drive can - as with all Auslanderzitch- done by electric or internal combustion engine. This embodiment of the invention has been tested in practice with great success and by bringing the cuttings from below - e.g. the branches of a treetop - became a safe working with high
  • the chain sword is positioned vertically to the worktop, so that the saw like a band saw, but in a much more compact design, can be used.
  • the working area can be reduced to the required level by means of cover plates (cover sliders) d-48 in order to cover the area of the high-speed chain as far as possible.
  • a foot switch is preferably provided to switch the saw on or off, or to engage and accelerate it when driven by an internal combustion engine.
  • Fig. 5 and Fig. 5a show - in side view and top view from above - a chainsaw in an alternative embodiment to Fig. 3a with protective cap e-3 in a simplified design and protective rail e-4 and guard e-5 with link plate e-48 to the desired reduction of the working area.
  • the protective cap e-3 is formed here as a unit with the safety bar e-4 and advantageously consists of two half-shells which in the deflection of the chain and the housing outlet area by means of the screw e-9 and e-7 and e-8 using intermediate - or spacers e-16 are detachably connected.
  • the half shells can either according to Figure 4 or Figure 3 on Sword e-2 or directly on the housing e-1 chainsaw releasably and positively secured.
  • the protective bow e-5 which is widened in view from above or from above in FIG. 5a, is additionally provided with a protective cushion e- ⁇ in this design in order to dampen unwanted, hard contacts.
  • the protective rail e-4 lies with the ends between the half-shells of the iron e-5 and protective cap unit e-3 and is connected in this embodiment by means of the screw connection e-9 with the protective bracket e-5.
  • the distance between the lower returning chain e- 15 in the work area and the protective bracket e-5 can be increased to any desired size by ironing and adapted to the cut material to be cut.
  • Fig. 6 shows an alternative embodiment of the chain saw of Fig. 4a in which the chain sword is vertically attached to a worktop g-30.
  • the working area of the saw is provided on both sides with a thin-walled gate (protective flap) g-34, which automatically covers the free-running saw chain during breaks by the return force of the spring g-49 and its own weight.
  • an electro-magnetic or mechanical device can be provided which holds the protective flap g-34 in the rest position and unlocked directly before the start of sawing - in particular by the switch-on pedal.
  • the protective flap g-34 may differ from the
  • FIG. 6a shows the arrangement of the protective flaps in the section region a-b of FIG. 6 with the same reference numerals.
  • Fig.7 A particular embodiment of the invention, the Fig. 7 in side view.
  • the protective cap h-3 already described above is used at the sword end in the deflection area for the mounting of a second chain guide wheel h-44.
  • the chain is supported and guided on two wheels, the inner drive wheel of the motor and the outer idle guide wheel.
  • This can be dispensed with a complex and costly lubrication of a sliding chain.
  • the chain circulating freely over sprockets requires only occasional grease or oil lubrication.
  • an equivalent work area can be achieved as with a sliding and free circulating chain.
  • the chain sword h-44 has in this embodiment a running over the entire length of slight constriction in order to reduce friction between the chain and the sword h-2 or completely avoided. Since a freewheeling chain with free sword end is rarely needed when felling large trees, a chain saw as described in Fig. 7 is suitable for most practical applications and can be used for continuous operation because of the second sprocket.
  • the protective cap h-3 is fitted with a chain tensioning device h-41 in a slightly different form, so that the chain can be tensioned by means of the clamping screw h-2 ⁇ or retightened at any time in a simple manner.
  • the chain in the deflection region of the same through the chain Rad h-44 out and existing in this embodiment of two articulated halves existing protective cap h-3 (hinge / hinge h-38) is by means of screws h-7 or alternatively as in Fig. 2a and 2b by means of studs, in holes in Chain sword h-2 positively and detachably attached.
  • the axis h-43 of the chain guide wheel h-44 is mounted in a slot to provide the required tolerance of storage during tensioning of the chain.
  • FIG. 8 and Fig. 8a show an embodiment of the invention in which the protective device consists of a - as described above - parallel to the chain and slightly bent at the top extending protective rail i-4, on which in addition to a bending elastic protection -Band i-57 - as part of the protection device in total - rests.
  • the elastic band i-57 yields, springs upwards and returns to the rest position shown in the drawing after the cutting process.
  • the suspension is wholly or in addition to an inherent elasticity of the protective tape i-57 preferably achieved in that the elastic band end i-60 is connected by means of a thin and slightly flexible cable i-58 on one side with a retractor i-59, the retracting force by a Spring or - correspondingly - by means of the motor power of the drive For example, by a magnetic, sliding or slip clutch is generated.
  • the illustrated circle i-54 in Fig. 8a represents the extent of a already largely cut sawing material (such as a
  • the spring stroke of the elastic protection body i- 57 together with the distance returning saw chain / top edge guard rail i-4 corresponds to the length of the working area of the returning saw chain i-15 f to use the entire working range of the chain can.
  • Fig. 8 and Fig. 8a show the basic principle of a protective device with elastic or resilient protective tape.
  • the guide of the protective tape i-57 in the movable end area i-60 can be done in any other way different from the representations.
  • the guard band i-57, with the movable end i-60 or the cable i-58 between the drive motor of the chainsaw and handle can be passed through a slot or opening in the housing i-1, where then the reeling mechanism i-59 located.
  • Such a design of the protective device of the chain saw the protection for the operator is effectively increased both during and outside the cutting process and can be dispensed with a quick stop device - by eliminating a possible kickback of the chainsaw - even in this embodiment.
  • FIGS. 8 and 8a shows, in addition to FIGS. 8 and 8a, an alternative embodiment of the releasable, flexurally elastic protective device, in which the protective band i-57 is formed as a link band. It may be a textile, rubber or plastic tape, which is reinforced by cross bars.
  • 9 and 9a show embodiments of the invention in which the work area of the saw chain, a portion of the chain sword and the protective device are covered by side plates k- ⁇ l, which project slightly beyond the chain teeth of the working area (downwards) and which by means of Swivel joint k-12 in a chain-sword about right-angle position - in particular upwards - are pivotable.
  • the cover plates k-61 are in working position and are pivoted - eg in a work break - according to the arrows shown in the rest position in which the chain teeth and parts of the sword, etc. are covered to protect the operator.
  • the pivoting movement can be done manually or by motor or e- lektromagnetician force by an arbitrarily designed switching device in this embodiment.
  • Fig. 10 shows an embodiment of the chain saw which is particularly intended for difficult work operations, eg for working in treetops or at those places where "all-round protection" is particularly urgent for the operator
  • the lower guard rail 1-62 which is preferably U-shaped in cross-section, is mounted on the housing along the saw chain in the working area and can be moved manually on the housing immediately before starting the sawing process
  • Tension band 1-63 by means of a retractor and magnetic or centrifugal clutch and motor or electromechanical force effect under release of the chain working range in a housing rail adapted to the protective rail and correspondingly shaped housing 1-66 Chainsaw to be withdrawn.
  • the 1-65 deflected over the guide roller 1-64 drawstring can be connected to a retractor with increasing spring tension, which automatically retracts the sliding guard rail after release of the clutch in the protective position.
  • a retractor with increasing spring tension, which automatically retracts the sliding guard rail after release of the clutch in the protective position.
  • Such a construction can be made very light, so that only a small or no additional weight of the chain saw is to be expected, as can be dispensed with a quick stop device in a conventional form.
  • stationary chainsaw with protection device for shredding thin branches, strips or beams opens up new applications and thus expanded market shares for the manufacturer.
  • the chain saw according to the invention thus allows relaxed and largely safe working and thus opens up to people circles in the application of the chainsaw in the field of wood shredding and processing, for which less training and experience are prerequisite.
  • the chainsaw can be safely used in the branches of treetops and hedges, as the risk of kickback and unwanted, dangerous contact with branches is effectively excluded by the protective device.
  • the specific accessories of the chain saw can be quickly and easily removed at any time, if the relatively rare case occurs that, for example, a tree to be felled, in which the trunk diameter is much larger than the sword length of the saw.
  • the manufacturing and development costs, eg. by direct attachment of the protective device on the chain sword, kept low and the previously required structurally relatively complex automatic chain stop to avoid injury to the operator in a kickback of the saw is omitted in almost all embodiments of the invention.
  • Bracket widening 40 Housing / combustion with padding or Elekt ⁇

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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

La présente invention concerne une scie à chaîne comprenant une chaîne qui circule sur un guide-chaîne (c-2) et qui est entraînée par un moteur électrique ou un moteur à combustion interne, un carter (c-1) et une poignée (c-10) équipée d'interrupteurs de commande. Le guide-chaîne (c-2) fait saillie du carter. Des dispositifs de protection (c-4) (c-3) sont prévus pour la chaîne de scie (c-14) qui sort du carter moteur (c-1) et qui avance et dans sa région de changement de direction avant, à l'extrémité extérieure du guide-chaîne. Ces dispositifs de protection a) s'étendent parallèlement au guide-chaîne et sont conçus sous forme de corps plats dont l'épaisseur est identique ou inférieure à celle du guide-chaîne (c-2), et de préférence également sous la forme plane, et qui sont situés à faible distance de la chaîne (c-14), ou sous forme de rails de protection (c-4) et/ou b) sont conçus, dans la région de changement de direction avant de la chaîne de scie, sous forme de capot de protection (c-3) entourant complètement, en grande partie ou seulement partiellement la chaîne de scie et le guide-chaîne (c-2). Cette invention permet d'empêcher totalement un recul de la scie à chaîne lors du processus de sciage et de diminuer de façon efficace le risque de blessure pour la personne qui manipule l'appareil, simplifiant ainsi efficacement la manipulation des scies à chaîne.
PCT/DE2006/001406 2005-08-31 2006-08-11 Scie a chaine equipee d'un dispositif de protection WO2007025503A1 (fr)

Applications Claiming Priority (2)

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DE102005041204.1 2005-08-31
DE200510041204 DE102005041204A1 (de) 2005-08-31 2005-08-31 Kettensäge

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WO2007025503A1 true WO2007025503A1 (fr) 2007-03-08

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111774659A (zh) * 2019-04-04 2020-10-16 南京德朔实业有限公司 切割装置
US11472058B2 (en) 2019-11-25 2022-10-18 Milwaukee Electric Tool Corporation Powered handheld cutting tool

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015008829U1 (de) 2015-12-22 2016-02-02 Harald Adelhardt Schnittschutzbügel für handgeführte Kettensäge auf Baustellen u. stat. Arbeitsstellen

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DE500461C (de) * 1927-01-30 1930-06-21 Chain Saw Corp Kettensaege mit verstellbarer Spannscheibe und oertlich festliegender Triebscheibe
DE501123C (de) * 1930-06-27 Werner Maurer Kettensaege mit Schutzvorrichtung
US2638944A (en) * 1951-02-07 1953-05-19 Woleslagle Arnold Chain saw guard
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EP0062188A2 (fr) * 1981-03-26 1982-10-13 A/S Norcem Dispositif pour fixer des accessoires à une scie à chaîne motorisée
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US5074047A (en) * 1990-09-10 1991-12-24 Tuscarora Designs, Inc. Anti-pinch device for chain saw
GB2301061A (en) * 1995-05-26 1996-11-27 Francis Edward Kennaway Bolton A safety system for chain saws.
US5850696A (en) * 1996-09-09 1998-12-22 Sciarrone; Angelo Chain saw guard

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DE501123C (de) * 1930-06-27 Werner Maurer Kettensaege mit Schutzvorrichtung
DE500461C (de) * 1927-01-30 1930-06-21 Chain Saw Corp Kettensaege mit verstellbarer Spannscheibe und oertlich festliegender Triebscheibe
US2638944A (en) * 1951-02-07 1953-05-19 Woleslagle Arnold Chain saw guard
US4063358A (en) * 1977-03-09 1977-12-20 Hodge Gerald J Guard for a chain saw used for carving
US4193193A (en) * 1978-08-09 1980-03-18 Adolph Holzworth Guard for chain saw
GB2042975A (en) * 1979-02-26 1980-10-01 Omark Industries Inc Chain saw guard
DE3111641A1 (de) * 1981-03-25 1982-11-04 Hermann 8831 Bergen Horndasch Tischkettensaege zum brennholzschneiden
EP0062188A2 (fr) * 1981-03-26 1982-10-13 A/S Norcem Dispositif pour fixer des accessoires à une scie à chaîne motorisée
US4524519A (en) * 1984-03-19 1985-06-25 Muehling Anthony A Continuous loop flexible saw
US5074047A (en) * 1990-09-10 1991-12-24 Tuscarora Designs, Inc. Anti-pinch device for chain saw
GB2301061A (en) * 1995-05-26 1996-11-27 Francis Edward Kennaway Bolton A safety system for chain saws.
US5850696A (en) * 1996-09-09 1998-12-22 Sciarrone; Angelo Chain saw guard

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111774659A (zh) * 2019-04-04 2020-10-16 南京德朔实业有限公司 切割装置
US11472058B2 (en) 2019-11-25 2022-10-18 Milwaukee Electric Tool Corporation Powered handheld cutting tool
US11872718B2 (en) 2019-11-25 2024-01-16 Milwaukee Electric Tool Corporation Powered handheld cutting tool

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