EP1159112B1 - Scie a chaine dotee d'un dispositif tendeur de chaine - Google Patents

Scie a chaine dotee d'un dispositif tendeur de chaine Download PDF

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Publication number
EP1159112B1
EP1159112B1 EP00990512A EP00990512A EP1159112B1 EP 1159112 B1 EP1159112 B1 EP 1159112B1 EP 00990512 A EP00990512 A EP 00990512A EP 00990512 A EP00990512 A EP 00990512A EP 1159112 B1 EP1159112 B1 EP 1159112B1
Authority
EP
European Patent Office
Prior art keywords
chain
housing
eccentric
motor
hand wheel
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
EP00990512A
Other languages
German (de)
English (en)
Other versions
EP1159112A1 (fr
Inventor
Christian Hermes
Siegfried Keusch
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1159112A1 publication Critical patent/EP1159112A1/fr
Application granted granted Critical
Publication of EP1159112B1 publication Critical patent/EP1159112B1/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
    • B27B17/14—Arrangements for stretching the chain saw
    • B27B17/142—Arrangements for stretching the chain saw with adjustment by at least one cam
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T83/00—Cutting
    • Y10T83/707—By endless band or chain knife
    • Y10T83/7226—With means to guard the tension
    • Y10T83/7239—With means to vary distance between pulley or sprocket axes

Definitions

  • a chain saw is also known, in which between a rotary member and an eccentric a prestressed torsion spring is arranged, which seeks to turn the eccentric abutting the stop in such a direction of rotation that the sword constantly with a displacement force in the longitudinal direction is charged. This keeps the sword at the greatest possible distance from the sprocket. As a result, a clamping force on the saw chain, which compensates for an increase in the length of the saw chain due to wear and temperature influence during operation, constantly acts.
  • the torsion spring is tensioned by means of the rotary member designed as a rotary knob until the eccentric bears against the abutment with a sufficiently large preload, thereby achieving the optimum saw chain tension.
  • the chainsaw according to the invention with the features of claim 1 has the advantage that a selected by the user of the chainsaw position of the sword against the sprocket is positively secured and must be readjusted only when the chain has lengthened due to wear or if worn the sword and the sprocket or the deflection wheel.
  • the chain pretensioner can be operated by hand without tools. For this purpose, only two immediately adjacent concentrically arranged handwheels to rotate in each case in the same direction.
  • An automatic Giving the chain tensioning device with the consequence of decreasing chain tension while working with the chainsaw is reliably excluded by the positive locking the eccentric disc on the handwheels, because thereby the sword is held unyielding in the set clamping position.
  • the rotary member consists of two shell-like plugged, about a common axis relative to each other rotatable hand wheels, a convenient handle is provided with which the saw chain without tools with one hand "blind", i. without searching for the controls, can be tensioned.
  • the inner handwheel is axially adjustable relative to the housing and can be supported on the sword, the sword is in the set position for optimum chain tension clearly, d. H. without incorrect operation, can be locked, especially after the chain tension has been set to the desired value with the outer handwheel.
  • the outer handwheel is coupled to the eccentric rotationally, in particular via a toothed / toothed shaft connection, a safe rotational drive of the eccentric is ensured, the connection between the outer handwheel and the eccentric particularly simple - because coarse tolerable - can be produced and assembled.
  • the eccentric relative to the housing or against the handwheel is mounted axially displaceable axially, engages after a maximum of three quarters of a revolution of the eccentric this in its working position against a sword entraining stop plate.
  • spring means the inner relative to the outer handwheel to push axially apart, in particular arranged axially between the two, the sword position when releasing the inner handwheel is secured without the outer handwheel unintentionally rotates and thereby the selected shegekettenwear is reduced.
  • the chain tensioning device can form a complete assembly, in particular together with the sprocket cover, captive pre-assembled and can be connected without incorrect assembly with the housing.
  • the stop plate is particularly resistant to deformation or bending stiff with low material usage, so that the chainsaw is lighter and the chain tensioning device is directly effective, as with known U-shaped stop plates.
  • Figure 1 shows a three-dimensional view of the chainsaw 10 with a housing 12, from the front of a sword 14 protrudes, which is encompassed by a saw chain 16, which is guided circumferentially.
  • the housing 12 has a handle 18 with a switch 20 for switching on the motor, not shown, and an additional handle 17 for guiding the chainsaw 10 with the second hand of the operator and a brake control button 19 for quickly switching off the saw chain drive, especially when the dangerous kickback effect.
  • the chain saw 10 carries a sprocket cover 26, which receives a chain tensioning device 28 (FIGS. 2, 3), of which an outer handwheel 36 and an inner handwheel 38 with a grip web 39 are visible.
  • a chain tensioning device 28 FIGS. 2, 3
  • an outer handwheel 36 and an inner handwheel 38 with a grip web 39 are visible.
  • Under the sprocket cover 26 sits on the housing side a sprocket 22 ( Figure 2, 3, 17) over which the saw chain 16 is to be laid so that between both a positive engagement and the chain 16 is taken while rotating the sprocket 22 circumferentially.
  • the sprocket 22 is over a not shown gear coupled drivable with a combustion or electric motor
  • the sword 14 carries on his sword tip a guide wheel 24, via which the saw chain 16 is positively held on the sword 14, deflected and secured against loss.
  • FIG. 2 shows a side view of the chain saw 10 in the region of the chain tensioning device 28 with the chain wheel cover 26 removed, the outer contour of which is indicated by a double line 26.
  • the sprocket 22 is shown in plan view and the guided over the sprocket 22 and sword 14 saw chain 16 shown by a dashed line.
  • the sword 14 is held in the region of its slot 15 on the housing 12 laterally pressed.
  • a stud 34 enters approximately centrally through the slot 15 and protrudes beyond the front flat side of the sword 14 addition.
  • a spacer 54 of the chain tensioning device 28 surrounds the stud 34 concentrically and is supported laterally on the sword 14. It engages over the transverse diameter of the slot 15 and presses the sword 14 by appropriate axial bias of the ( Figure 3) chain tensioning device 28 laterally against the housing 12 and secures it against longitudinal displacement.
  • an eccentric disc 30 with a spiral outer contour.
  • the longitudinal position of the sword 14 relative to the housing 12 is secured adjustable. It serves a sword between 14 and eccentric 30th arranged annular, cut away in the region of its legs stop plate 32 (Fig. 17, 18) as a coupling agent.
  • the stop plate 32 holds by engaging a laterally projecting retaining tab 133 in the sword 14 at this fixed.
  • a laterally projecting to the other side support tabs 33 comes to rest against the circumference with the spiral outer contour of the eccentric disc 30, so that so that the eccentric 30 determines the position of the stop plate 30 and thus the sword 14.
  • the chain tensioning device 28 For tensioning the saw chain 16 and for securing the sword 14 in a position maintaining the desired chain tension, the chain tensioning device 28 is arranged in the protective cover-type sprocket cover 26 which can be fixed to the housing 12 (FIGS. 3, 4).
  • the chain tensioning device 28 includes the rotatably mounted on the sprocket 26 eccentric disc 30 with its spiral outer contour and designed as an outer and inner handwheel 36, 38 rotary member ( Figure 3) for rotating the eccentric 30.
  • the rotary connection between the outer handwheel 36 and the eccentric disc 30 is designed as a toothed shaft toothed coupling 31/37.
  • the sword 14 By turning the outer hand wheel 36 with the eccentric 30, the sword 14 in a distance to the sprocket 22 magnifying sense to the sword tip is displaced, whereby the saw chain 16 is increasingly stretched. If the saw chain 16 at the longitudinal edge of the sword 14 completely come to rest and stretched, the rotational resistance increases on outer handwheel 36. Now this is emotional and controlled latching continue to turn until the desired chain tension is actually reached. Then, the inner handwheel 38 is finally fixed axially to the housing 12 on the stud bolt 34. It acts and clamps the sword 14 axially fixed in the selected position.
  • Figure 3 shows a horizontal longitudinal section of the chain saw 10 in the region of the chain tensioning device 28 with an anchored in the housing 12 with its hexagon head in a housing wall unspecified studs 34 with a screwed metallic mecanicgewinde Community 35th
  • This is an outside smooth, cylindrical part with a not closer designated central blind hole with internal thread, which is anchored with its unspecified hexagonal head rotatably and captively in the existing plastic inner handwheel 38.
  • the inner threaded piece 35 captively carries the spacer 54, via which it is supported axially on the flat side of the sword 14 and thereby clamps it laterally on the housing 12.
  • the spacer 54 has a stepped collar 55, which engages with its inner diameter a step diameter 135 of the free end of the threaded part 35 and thereby axially rear side supported at the end of the step diameter 135.
  • the spacer ring 54 is secured by means of a securing ring 56 which rests in a recess 57 at the end of the threaded piece 35, with axial play against loss.
  • the inner threaded piece 35 carries externally displaceable between the inner hand wheel 38 and the spacer 54 eccentric disc 30 and passes through the hollow cylindrical, hub-like plastic inner part 25th
  • a smaller preloaded helical spring 48 concentrically surrounds the inner threaded piece 35 and seeks to push the eccentric disc 30 and the inner handwheel 38 axially apart.
  • the hub-like inner part 25 of the eccentric disc 30 is designed as a toothed shaft 31. This is encompassed radially by the toothed hub 37 of the outer hand rim 36 and is axially displaceable but held against rotation.
  • the eccentric disc 30 is rotationally fixed and axially fixed relative to the lower end of the hub-like part 25. With its spiral, radial abutment surface 29, the eccentric disc 30 is supported on the lateral support tabs 33 of the stop plate 32.
  • the stop plate 32 holds captive on a screw on the flat side of the sword 14 fixed.
  • the stop plate 32 engages with a sword 14 toward the side projecting retaining tabs 133 in the slot 15 of the sword 14 and is supported therein at its front edge.
  • the stop plate 32 When rolling the abutment surface 29 of the eccentric disc 30 relative to the support tabs 33, the stop plate 32 is pushed together with the sword 14 corresponding to the eccentricity of the eccentric disc 30 more or less in the longitudinal direction forward and thereby guided over the sword 14 saw chain 16 more or less taut curious, depending on how the distance between the sword 14 and the right in the direction of observation sprocket 22 changes.
  • the stop plate 32 is designed as an elongated-annular sheet metal part (Figure 17, 18) and has two elongated legs 60, 160 which surround the circumference of the spacer 54 and the stud 34 symmetrically.
  • the outer handwheel 36 is axially immovable, but rotatably held on the sprocket cover 26.
  • This has an integrally molded hollow gear 27, which is passed through and under the hand wheel 36.
  • This is done with three toothed segments 47, which are incorporated at the end of three radial spring tongues 46 in the flat bottom of the shell-like, in particular made of red plastic, outer handwheel 36.
  • the toothed segments 47 each carry an external toothing, which engage in the unspecified teeth of the ring gear 27 fitting and biased to hold radially outward oppressive.
  • a radial Matterrastkupplung is created, which is effective in each direction of rotation of the outer handwheel 36 with clearly noticeable Matterrastwiderstand.
  • the inner hand wheel 38 is inserted centrally into the shell-like outer handwheel 36. It engages with an axially projecting annular collar 50 in an axial annular groove 52 of the outer handwheel 36 a. In this case, the edge of the annular collar 50 contacts the spring tongues 56, in particular in the region of the toothed segments 47, and presses them radially outward. The more the inner 38 axially approaches the outer handwheel 36, the further the annular collar 50 displaces the toothed segments 47 radially outwards, so that they are held pressed with high force against the teeth of the ring gear 27 of the sprocket cover 26. Thus, the outer handwheel 36 is non-rotatably locked against the sprocket cover 26, wherein the inner 38 is acted upon axially biased relative to the outer handwheel 36 by the coil spring 40 disposed therebetween.
  • an axial Studentsrastkupplung is arranged between the outer 36 and the inner handwheel 38.
  • This is formed from axial toothed segments 41, which belong to axially deflectable spring tabs 43 which are punched out of the bottom of the shell-like outer handwheel 36 and which are supported against a spur gear teeth 44 of the inner handwheel 38.
  • This axial Kochkupplung 41,42, 44 holds the latched state, the inner handwheel 38 secured to the outer handwheel 36 against unwanted loosening.
  • the inner handwheel 38 has a central grip web 39 which protrudes axially and serves for convenient gripping and twisting of the inner handwheel 38.
  • the chain tensioning device 28 is secured against entry of debris and chips entrained in sawing by the saw chain 16 by an inner protective cover 58. This holds inside the sprocket cover 26 at a collar-like area axially latching firmly.
  • the operation of the chain tensioning device 28 is the following: To release the sword 14, the inner handwheel 38 is first rotated counterclockwise until the axial Matterrastkupplung 41, 42, 44 to the outer handwheel 36 audibly and tangibly disengaged. The disengagement is assisted by the coil spring 40, which seeks to push the lock-up clutch 41, 42, 44 apart. In this case, the annular collar 50 moves away axially from the toothed segments 47 and releases them. These can then dodge radially inwards and thereby allow the latching rotation of the outer handwheel 36th
  • the chain tensioning device 28 is set or dimensioned so that the clamping-locking of the sword 14 is then solved by the inner handwheel 38 when the Matterrastkupplung 41, 42, 44 is disengaged. Then the spacer 54 and the inner threaded piece 35 have a sufficient axial distance to the sword 14. Thereafter, the longitudinal displacement is only blocked by the eccentric disc 30. This blocking is canceled by subsequent rotation of the outer handwheel 36 and the same direction rotational drive of the eccentric disc 30 in the release direction. In this case, by rotating in the release direction, the eccentricity of the spiral, radial abutment surface 29 with respect to the support of the sword 14 is getting smaller. Thus, the sword 14 can move in the direction of viewing to the right on the sprocket 22, which reduces the shegekettenwear.
  • the same procedure as for releasing the saw chain 16 is performed first, except that when the Kochrastkupplung 41, 42, 44 is disengaged, the outer handwheel 36 is to be rotated counter to the release direction. As a result, the sword 14 is moved away from the sprocket 22 in the direction of viewing to the right (FIG. 17) and the saw chain 16 is tightened tighter. Once the desired saw chain tension has been achieved, the inner handwheel 38 is tightened clockwise until the overrunning clutch 41, 42, 44 is again engaged and not rotatable.
  • the sprocket 26 is held by the chain tensioning device 28 axially on the housing 12 of the chainsaw 10 and the stud bolt 34 and secured against loss.
  • the sprocket 26 is secured against rotation relative to the housing 12 by a narrow slot 70 which is secured to the housing 12, laterally to Sprocket cover 26 over protruding tongue 68 overlaps clearance.
  • the inner handwheel 38 is rotated in the release direction until the inner threaded piece 35 has completely detached from the stud 34. Subsequently, the sprocket cover 26 is axially removable from the housing 12 by pulling on the inner handwheel 38. In this case, the eccentric disc 30 comes out of contact with the stop plate 32. Thereafter, the sword 14 is neither axially nor secured against longitudinal displacement and can be removed together with the saw chain 16 in the axial direction of the housing 12 and the sprocket 22 on the stud 34 away.
  • Figure 4 shows the sprocket cover 26 in plan view, wherein the ring gear 27 can be seen as a larger opening in the sprocket 26, on the outer flat side 227, the outer handwheel 36 is axially supported with its flat bottom and it from the rear with its sector gear 47 radially may overlap.
  • the ring gear 27 can be seen as a larger opening in the sprocket 26, on the outer flat side 227, the outer handwheel 36 is axially supported with its flat bottom and it from the rear with its sector gear 47 radially may overlap.
  • 38 of the sprocket 26 has in the region of the ring gear 27 has a shell-like edge 127 into which the outer hand wheel 36 is immersed.
  • FIG. 5 shows the sprocket cover 26 in longitudinal section, the details mentioned above being recognizable without reference to the reference numbers again.
  • Figure 6 shows a bottom view of the sprocket cover 26 and the collar 127, a latching tongue 63, which serves for locking the inner protective cover 58 ( Figure 3).
  • Figure 7 shows a plan view of the inner handwheel 38, wherein the handle bar 39 with side ribs 139 can be seen, which allow a non-slip embracing and handling.
  • Figure 8 shows a cross section of the inner handwheel 38 with the metallic inner threaded part 35, the smaller step diameter 135 carries an annular groove-like recess 57 for receiving a retaining ring 56 ( Figure 3).
  • an axial toothing with Gegenstirnzähnen 44 is shown on the underside of the existing plastic shell-like part of the inner handwheel 38, which form the axial Studentsrastkupplung 41, 42, 44 in combination with the axial tooth segments 41 of the outer handwheel 36 ( Figure 3, 11) , which secure the inner handwheel 38 against rotation relative to the outer handwheel 36 and preclude unintentional release of the chain tensioning device 28.
  • FIG. 9 shows a spatial representation of the inner handwheel 38 from below, on which the above-mentioned details can be clearly seen from FIGS. 7 and 8, without repeating these in detail.
  • Figure 10 shows a bottom view of the outer cup-like handwheel 36, which carries on its upwardly pulled outer edge outside a knurling 53 for better handling.
  • outer handwheel 36 In its shell-like bottom carries the outer handwheel 36 several punched out. In the radially outer region, these are designed as radially and axially elastic, arcuate spring tongues 46, which each carry a toothed segment 47 with two teeth at its outer end. Radially further inside there are three symmetrically distributed further punched outs. Two of these form adjacent axially movable spring tabs 42, the third being a recess 49. At the radial outwardly reaching ends of the spring tabs 42 each have an axial toothed segment 41 is arranged for engagement in the counter-end teeth 44 of the inner handwheel 38, which together form the explained to Figure 3 Kochrastkupplung 41, 42, 44. The third recess 49 between those of the spring tabs 42 forms a window through which may possibly escape between the inner and outer handwheel 36, 38 accumulated dust and chips.
  • the center of the outer hand wheel 36 forms a collar-shaped toothed hub 37, in which the toothed shaft 31 of the eccentric disc 30 rotatably entrained and axially displaceable back and forth storable.
  • Figure 11 shows a top view of the outer handwheel 36, wherein the toothed segments 47 can be seen with their radially outwardly facing teeth 147, which serve to engage in the toothing of the ring gear 27 and which form the radial Matterrastkupplung between the outer handwheel 36 and the sprocket 26 ,
  • the top view of the axial tooth segments 41 illustrates that the spring flap 42 carrying them is designed like a leaf spring and is axially bendable.
  • Figure 12 shows a cross section of the outer handwheel 36, wherein the outer knurling 53, the toothed hub 37 and the configuration of the radial toothed segments 47 with the radial teeth 147 and a respective radial projection 247 for engaging the ring gear 27 of the sprocket 26 are recognizable.
  • the shell-like shape of the outer handwheel 36 for receiving the inner handwheel 38 becomes clear.
  • FIG. 13 shows a bottom view of the inner protective cover 58 with a raised side edge 158 and a keyhole-shaped large passage hole 59 for the passage of the inner threaded part 35 and the spacer 54, wherein the elongated portion of the passage hole 59 serves for the passage of the support tab 33 of the stop plate 32.
  • the protective cover 58 At its outer edge of the protective cover 58 carries an over projecting locking lug 61 which is associated with the latching tongue 63 of the sprocket 26 and the correct position installation of the protective cover against the sprocket cover 26 is used.
  • FIG. 14 shows a three-dimensional representation of the eccentric disk 30, with its flat, disk-like region consisting of metal, with the eccentric, radial abutment surface 29, being particularly clearly recognizable.
  • An injected central collar-like part made of plastic carries the toothed shaft 31.
  • the toothed shaft 31 has a central axial bore 45 for the passage of the internal threaded part 35 (FIG. 3).
  • Figures 15, 16 each show a plan view and a cross section of the eccentric disc 30, in particular, the embodiment of the toothed shaft 31 is clear, which surrounds the flat portion of the eccentric disc 30 axially and radially non-rotatably.
  • FIG. 16 illustrates the design of the stepped collar 145, and a step bore, which widens at the top, in the upper region of the axial bore 45, which serves for the entry and support of the smaller spiral spring 48 (FIG. 3) for the axial retention of the eccentric disk 30.
  • FIG. 17 shows a three-dimensional plan view of the chain saw 10 with the sprocket cover 26 disassembled (FIGS. 1 and 4), the sprocket 22 and the sword 14 being recognizable in their arrangement on the flat side of the housing 12 and, in particular, the arrangement of the annular stop plate 32 being on the side of the sword 14 by means of a screwed through from behind by the sword 14 screw 43, which passes through a suitable threaded hole of the lower leg 60 of the U-shaped stop plate 32.
  • the stop plate 32 is thus held captive on the sword 14.
  • the stop plate 32 engages with a retaining flap 133, the slot 15 of the sword 14 and is thus supported on the front side relative to the sword 14 in the longitudinal direction.
  • the stop plate 32 Due to the annular configuration, the stop plate 32 is a particularly stable and deformation-proof part.
  • the lateral projection 66 of the stopper plate 32 prevents the lubricating oil from passing the sword 14 axially outwardly rather than radially radially overhanging the saw chain 16. Further, the axially outwardly facing tongue 68 is laterally recognizable on the housing 12 for rotationally secure holding the sprocket cover 26.
  • FIG. 18 shows a three-dimensional representation of the elongated, annular stop plate 32 from its side assigned to the sword 14. There is particularly clear the embossed back of the projection 66 and the threaded hole 60. The other details mentioned above are also clearly visible, but should not be mentioned again in detail.

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  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
  • Sawing (AREA)
  • Supplying Of Containers To The Packaging Station (AREA)
  • Basic Packing Technique (AREA)
  • Load-Engaging Elements For Cranes (AREA)

Claims (10)

  1. Tronçonneuse à chaîne (10) comportant un corps (12) logeant une roue dentée à chaîne (22) et une lame (14) alignée avec celle-ci, cette lame faisant saillie hors du corps (12) et guider en rotation une chaîne de tronçonneuse (16) engagée sur la roue dentée à chaîne (22), la lame (14) étant réglable en déplacement longitudinal par rapport au corps (12) ou à la roue dentée à chaîne (22) à l'aide d'un dispositif tendeur de chaîne (28), le dispositif tendeur de chaîne (28) présentant une butée (32) pouvant être fixée sur la lame (14) et un excentrique (30) pouvant tourner au moyen d'un organe de rotation (36, 38), l'excentrique (30) pouvant être bloqué fixement par liaison par la forme vis-à-vis du corps (12) au moyen de l'organe de rotation (36, 38), caractérisée en ce que l'organe de rotation (36, 38) se compose de deux volants emboîtables en forme de cupules, l'un extérieur et l'autre intérieur, rotatifs l'un par rapport à l'autre autour d'un axe commun.
  2. Tronçonneuse à chaîne selon la revendication 1,
    caractérisée en ce que
    le volant intérieur (38) est réglable axialement par rapport au corps (12) et peut prendre appui contre la lame (14).
  3. Tronçonneuse à chaîne selon la revendication 2,
    caractérisée en ce que
    le volant extérieur (36) est solidaire en rotation de l'excentrique (30).
  4. Tronçonneuse à chaîne selon la revendication 3,
    caractérisée en ce que
    l'excentrique (30) est déplaçable axialement et de manière élastique par rapport au corps (12) ou au volant extérieur (36).
  5. Tronçonneuse à chaîne selon l'une quelconque des revendications 2 à 4,
    caractérisée en ce que
    le volant extérieur (36) est couplé au moyen d'un embrayage à crans (27 ; 46, 47) par rapport au corps (12) notamment par rapport à un capot de roue dentée à chaîne (26).
  6. Tronçonneuse à chaîne selon la revendication 5,
    caractérisée en ce que
    l'embrayage à crans (27 ; 46, 47) est de préférence de conception radiale et peut être fixé par liaison par la forme au moyen du volant intérieur (38).
  7. Tronçonneuse à chaîne selon l'une quelconque des revendications 2 à 6,
    caractérisée en ce que
    le volant intérieur (38) peut être couplé de manière amovible avec le volant extérieur (36) grâce à un embrayage à crans axial (41, 42, 44).
  8. Tronçonneuse à chaîne selon l'une quelconque des revendications 2 à 7,
    caractérisée en ce que
    des moyens de ressort (40) disposés notamment entre le volant intérieur (38) et le volant extérieur (36) ont tendance à les écarter axialement l'un de l'autre.
  9. Tronçonneuse à chaîne selon l'une quelconque des revendications 2 à 8,
    caractérisée en ce que
    des moyens de ressort (48) disposés notamment entre l'excentrique (30) et le volant intérieur (38) ont tendance à les écarter axialement l'un de l'autre.
  10. Tronçonneuse à chaîne selon l'une quelconque des revendications 2 à 9,
    caractérisée en ce qu'
    une plaque de butée (32) pouvant être fixée sur la lame et coopérant avec l'excentrique est de forme annulaire allongée.
EP00990512A 1999-12-29 2000-12-05 Scie a chaine dotee d'un dispositif tendeur de chaine Expired - Lifetime EP1159112B1 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19963650A DE19963650A1 (de) 1999-12-29 1999-12-29 Kettensäge
DE19963650 1999-12-29
PCT/DE2000/004333 WO2001049465A1 (fr) 1999-12-29 2000-12-05 Scie a chaine dotee d'un dispositif tendeur de chaine

Publications (2)

Publication Number Publication Date
EP1159112A1 EP1159112A1 (fr) 2001-12-05
EP1159112B1 true EP1159112B1 (fr) 2006-11-08

Family

ID=7934920

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00990512A Expired - Lifetime EP1159112B1 (fr) 1999-12-29 2000-12-05 Scie a chaine dotee d'un dispositif tendeur de chaine

Country Status (7)

Country Link
US (1) US6782627B2 (fr)
EP (1) EP1159112B1 (fr)
JP (1) JP2003519020A (fr)
CN (1) CN1174841C (fr)
AT (1) ATE344720T1 (fr)
DE (2) DE19963650A1 (fr)
WO (1) WO2001049465A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020216581A1 (de) 2020-12-29 2022-06-30 Robert Bosch Gesellschaft mit beschränkter Haftung Kettenspannvorrichtung für eine Kettensäge

Families Citing this family (53)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE20118322U1 (de) * 2001-11-12 2002-01-17 Jenn Feng Industrial Co., Ltd., Ping Chang, Taoyuan Vorrichtung zur Einstellung der Spannung einer Kettensäge
SE0200219L (sv) 2002-01-28 2003-07-29 Electrolux Abp Kedjespännare vid motorsåg
SE0300611D0 (sv) * 2003-03-06 2003-03-06 Electrolux Ab Chain saw tensioning device
SE0300609D0 (sv) * 2003-03-06 2003-03-06 Electrolux Ab Locking device for a chain saw guide bar
EP1637299B1 (fr) * 2003-05-20 2009-02-25 Husqvarna Zenoah Co., Ltd. Tendeur de chaine automatique
US6877233B1 (en) * 2004-01-08 2005-04-12 Electrolux Home Products, Inc. Chain saw adjuster mechanism with locking teeth
JP2006015606A (ja) 2004-07-01 2006-01-19 Kioritz Corp ソーチェーン張り装置
US7434502B2 (en) * 2004-07-21 2008-10-14 Husqvarna Outdoor Products Inc. Bar knob with cam-operated locking mechanism
US7107689B2 (en) * 2004-10-08 2006-09-19 Husqvarna Outdoor Products Inc. Bar knob with integrated lock
US7155832B2 (en) * 2005-03-01 2007-01-02 Husqvarna Outdoor Products Inc. Chain saw with tool-less chain tensioner and guide bar lock
DE102006003207B4 (de) * 2005-05-13 2017-03-23 Andreas Stihl Ag & Co. Kg Gehäusedeckelanordnung
GB0515884D0 (en) 2005-08-02 2005-09-07 Bosch Gmbh Robert Improvements in or relating to chainsaws
GB0515970D0 (en) * 2005-08-03 2005-09-07 Bosch Gmbh Robert Chain saw
US7350301B2 (en) * 2005-08-25 2008-04-01 Hsin-Chih Chung Lee Tension-adjusting device for a chain in chain saw
USD545157S1 (en) * 2005-09-06 2007-06-26 Desa Ip, Llc Chain saw
USD547630S1 (en) 2005-09-06 2007-07-31 Desa Ip, Llc Chain saw
US20070062361A1 (en) * 2005-09-16 2007-03-22 Wei Xiong Chainsaw tensioner
USD538123S1 (en) * 2005-10-20 2007-03-13 Black & Decker Inc. Chain saw
US7836808B2 (en) * 2006-01-23 2010-11-23 Szymanski David A Safety chain and rotational devices and replaceable teeth therefor
JP4898354B2 (ja) * 2006-08-30 2012-03-14 株式会社マキタ チェーンソー
US7743513B1 (en) * 2006-10-31 2010-06-29 Mtd Products Inc Chainsaw tensioning device
US7316299B1 (en) 2006-12-14 2008-01-08 Hsin-Chih Chung Lee Brake device for chain saw
US7676934B2 (en) * 2006-12-19 2010-03-16 Hsin-Chih Chung Lee Keyless adjusting mechanism for chain saw
USD560456S1 (en) * 2007-06-04 2008-01-29 Desa Ip, Llc Chain saw
WO2009048356A1 (fr) * 2007-10-12 2009-04-16 Husqvarna Ab Dispositif de fixation pour machines-outils portatives
US20090241353A1 (en) * 2008-04-01 2009-10-01 Scott William Ericson Toolless Apparatus for Guide Bar for Chain Saw
WO2010005485A1 (fr) * 2008-06-24 2010-01-14 Mtd Products Inc Tension de chaîne à couple limité pour outils électriques
WO2010069253A1 (fr) * 2008-12-16 2010-06-24 苏州宝时得电动工具有限公司 Scie à chaîne
USD651497S1 (en) * 2010-09-03 2012-01-03 Chevron Limited Chain saw
EP2465654B1 (fr) 2010-12-17 2017-07-26 Robert Bosch GmbH Scie à chaîne
USD663182S1 (en) * 2011-03-04 2012-07-10 Blount, Inc. Saw body
WO2012126501A1 (fr) * 2011-03-18 2012-09-27 Husqvarna Ab Tronçonneuse dotée d'un ensemble de serrage de barre de guidage et de tendeur de chaîne
USD662801S1 (en) * 2011-08-09 2012-07-03 Andreas Stihl Ag & Co. Kg Electric chain saw
US9132568B2 (en) 2011-10-11 2015-09-15 Echo, Inc. Chainsaw with cutting chain tensioner
CN102581380A (zh) * 2012-02-07 2012-07-18 浙江亚特电器有限公司 一种设有磨刀机构的电链锯
JP2013166251A (ja) * 2012-02-14 2013-08-29 Hitachi Koki Co Ltd チェーンソー
USD741678S1 (en) 2012-04-13 2015-10-27 Andreas Stihl Ag & Co. Kg Chain saw for cutting stone
US20150135542A1 (en) * 2012-06-06 2015-05-21 Husqvarna Ab Feedback system for bar clamping
DE102012211102A1 (de) * 2012-06-28 2014-01-02 Robert Bosch Gmbh Werkzeugkopplungsvorrichtung
USD741133S1 (en) * 2012-08-02 2015-10-20 Andreas Stihl Ag & Co. Kg Chain sprocket cover
USD744308S1 (en) 2012-08-02 2015-12-01 Andreas Stihl Ag & Co. Kg Chainsaw
DE102013003850A1 (de) * 2013-03-06 2014-09-25 Andreas Stihl Ag & Co. Kg Handgeführtes Arbeitsgerät mit einer Spannvorrichtung für eine Kette
JP6360658B2 (ja) * 2013-03-29 2018-07-18 株式会社マキタ チェンソーのチェーン張力調整装置
DE102014004526A1 (de) * 2014-03-27 2015-10-01 Andreas Stihl Ag & Co. Kg Handgeführtes Arbeitsgerät
USD763051S1 (en) 2014-04-04 2016-08-09 Andreas Stihl Ag & Co. Kg Chainsaw
USD790303S1 (en) 2015-08-06 2017-06-27 Andreas Stihl Ag & Co. Kg Cordless chainsaw
EP3337648B1 (fr) * 2015-08-18 2021-11-17 Black & Decker Inc. Systeme d'embrayage de guide de chaine pour une tronçonneuse, systeme d'embrayage de serrage de guide de chaine pour une tronçonneuse et procede de positionnement d'un guide de chaine sur une tronçonneuse
USD826021S1 (en) 2016-02-15 2018-08-21 Andreas Stihl Ag & Co., Kg Chain saw
EP3385045B1 (fr) * 2017-04-04 2022-01-26 Andreas Stihl AG & Co. KG Tronçonneuse à chaîne
US12145289B2 (en) 2018-06-05 2024-11-19 Nanjing Chervon Industry Co., Ltd. Chain saw
US12109724B2 (en) 2020-07-29 2024-10-08 Chain Orthopedics, Llc Chain saws, components for chain saws, and systems for operating saws
EP4297664A4 (fr) 2021-02-26 2025-07-16 Chain Orthopedics Llc Systèmes de guide de coupe et méthodes
DE102024105898A1 (de) * 2024-02-29 2025-09-04 Andreas Stihl Ag & Co. Kg Tragbares Arbeitsgerät

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB578825A (en) 1944-07-26 1946-07-12 John William Clubley Armstrong Improvements in or relating to portable chain saws
CH294418A (de) * 1949-04-09 1953-11-15 Austraat Wiig Rasmus Kristian Transportable Holzfäller-Motorsäge.
US3636995A (en) 1970-07-02 1972-01-25 Textron Inc Tensioner for saw chain
US4129943A (en) * 1977-11-25 1978-12-19 Bricker Norman C Chain saw bar tightener
US5174029A (en) * 1991-12-11 1992-12-29 Jt Investments Chain saw tensioning mechanism
DE4220845C2 (de) 1992-06-25 2000-07-20 Stihl Maschf Andreas Spanneinrichtung für eine Sägekette
US5491899A (en) * 1992-06-25 1996-02-20 Stihl Andreas Tensioning arrangement for a saw chain
DE4436543C2 (de) * 1993-11-12 2002-07-11 Stihl Maschf Andreas Spanneinrichtung für eine über ein Sägeschwert laufende Sägekette einer Motorkettensäge
FI101353B1 (fi) 1997-01-30 1998-06-15 Lako Forest Oy Menetelmä ja laite katkaisusahan ketjun kiristämiseksi
US5896670A (en) * 1997-07-24 1999-04-27 Blount, Inc. Chain tensioner for chain saw
US6049986A (en) * 1997-10-02 2000-04-18 Blount, Inc. Chain saw guide bar equipped with chain tensioner
DE19931250A1 (de) * 1999-07-07 2001-01-11 Bosch Gmbh Robert Kettensäge
DE20118322U1 (de) * 2001-11-12 2002-01-17 Jenn Feng Industrial Co., Ltd., Ping Chang, Taoyuan Vorrichtung zur Einstellung der Spannung einer Kettensäge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020216581A1 (de) 2020-12-29 2022-06-30 Robert Bosch Gesellschaft mit beschränkter Haftung Kettenspannvorrichtung für eine Kettensäge

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DE50013719D1 (de) 2006-12-21
JP2003519020A (ja) 2003-06-17
EP1159112A1 (fr) 2001-12-05
CN1174841C (zh) 2004-11-10
DE19963650A1 (de) 2001-07-12
ATE344720T1 (de) 2006-11-15
US20020124421A1 (en) 2002-09-12
US6782627B2 (en) 2004-08-31
WO2001049465A1 (fr) 2001-07-12
CN1342112A (zh) 2002-03-27

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