EP1066933B1 - Scie à chaîne à dispositif pour freiner la chaîne coupante - Google Patents

Scie à chaîne à dispositif pour freiner la chaîne coupante Download PDF

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Publication number
EP1066933B1
EP1066933B1 EP20000110853 EP00110853A EP1066933B1 EP 1066933 B1 EP1066933 B1 EP 1066933B1 EP 20000110853 EP20000110853 EP 20000110853 EP 00110853 A EP00110853 A EP 00110853A EP 1066933 B1 EP1066933 B1 EP 1066933B1
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EP
European Patent Office
Prior art keywords
brake
lever
band
brake band
lever arm
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
EP20000110853
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German (de)
English (en)
Other versions
EP1066933A3 (fr
EP1066933A2 (fr
Inventor
Egbert Steinbrueck
Juergen Dolata
Christian Hermes
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 EP1066933A2 publication Critical patent/EP1066933A2/fr
Publication of EP1066933A3 publication Critical patent/EP1066933A3/fr
Application granted granted Critical
Publication of EP1066933B1 publication Critical patent/EP1066933B1/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
    • B27B17/08—Drives or gearings; Devices for swivelling or tilting the chain saw
    • B27B17/083—Devices for arresting movement of the saw chain

Definitions

  • the invention relates to a motor chain saw with a chain brake device of the type defined in the preamble of claim 1.
  • the brake band lever has a second axis of rotation, which is arranged parallel to its first axis of rotation and about which it is pivotable when the outlet brake is actuated, so that when the backstop brake is actuated, the actuating element for operating the chain saw remains essentially free from reaction forces.
  • the technical effort for the lever mechanism to be realized here is relatively large.
  • the lever mechanism is also arranged in the front region of the chain saw, so that there is a disadvantageous long transmission path from the operating element for putting the chainsaw up to the lever mechanism.
  • a known electromotive chainsaw with chain brake device (DE 196 14 212 A1) is also tightened the brake drum wrapping around the brake drum by pressing the hand guard and the associated pulling the front end of the brake band to the brake drum in the case of the kickback brake.
  • the discharge brake comprises a curved rod to which the other end of the brake band is fixed and which is biased by an annular spring.
  • the rod is connected at the end to the actuating element for putting the chain saw into operation, with which, when it is actuated, an on / off switch arranged in the circuit of the electric motor is closed. Will that be Released actuator, the rod pulls due to a spring restoring force at the end of the brake band and pulls the latter on the brake drum.
  • the brake band is pulled against the direction of rotation of the brake drum, so that there is no automatic wraparound effect of the brake band as in the case of the return brake.
  • the braking force must be dimensioned correspondingly higher, since counteracted by the frictional force between the brake band and the brake drum force component of the braking force. Accordingly high is the technical effort for the outlet brake.
  • the motor chain saw according to the invention with the features of claim 1 has the advantage that a simple and inexpensive lever mechanism for the chain brake device significantly reduces the manufacturing cost of the chainsaw.
  • the arrangement of the transmission lever in the outlet brake is close and thus conveniently located on the actuator for putting the chainsaw.
  • For the braking effect only a small force is required, since even in the case of the outlet brake, the actual braking effect is triggered by the self-wrap effect of the brake band.
  • the spring force applied to the brake element only serves to trigger the Double Stingungs bins the brake band and does not form the actual braking force.
  • the brake release member is a pivotally held in the housing two-armed transmission lever whose spring loaded by a spring has a spring resting on the brake band brake section and the other lever arm is coupled to the actuator.
  • the actuating member is preferably formed integrally with the other lever arm, which acts in the case of an electric motor-driven chain saw the switching element of a lying in the circuit of the electric motor electrical on / off switch.
  • the friction between the brake release element, so the brake portion on the one lever arm, and the brake band is smaller than the friction between the brake band and brake drum. This can be achieved by a suitable structural design of the transmission lever and / or its brake section.
  • the braking section is formed by a fixed to the lever arm or integrally formed therewith brake shoe, which rests with a correspondingly the brake drum circumference cylindrically curved braking surface on the brake band.
  • a cooperating with the brake release element stop is provided which is arranged so that upon reaching a still approved minimum thickness of the brake band the brake release element or the transmission lever is no longer able to apply a contact force on the brake band on the brake band.
  • the stop can be defined on the housing side and cooperate with the transmission lever or with the brake shoe or be formed on the brake drum and cooperate with the over the brake band laterally projecting brake shoe.
  • the transmission lever is designed as a sheet metal bent part and the braking portion is formed in a circular arc in adaptation to the drum circumference.
  • pressure rollers which rest on the brake band with less friction can also be fastened to the brake lever in the region of the brake section.
  • the braking section can be pressed out of the sheet metal part as a transmission lever, which presses linearly on the brake band.
  • the brake shoe is fixed in a housing Brake shoe guide in the circumferential direction of the brake drum limited slidably received and acted upon by the lever arm of the transmission lever in the radial direction of the brake drum with spring force.
  • the brake shoe and the brake shoe guide each have a chamfer at their front end in the direction of rotation of the brake drum.
  • the two bevels are coordinated so that the brake shoe at a shift in the direction of rotation of the brake drum wedged with its bevel between the chamfer of the brake shoe and the brake band, whereby a strong radial pressure on the brake band and brake drum and the braking effect is substantially increased.
  • the non-return brake has a pivotally mounted on the housing, two-armed brake lever, acts on the one hand arm of the hand guard and the other lever arm is coupled to a shut-off member for switching off the drive wheel acting on the sprocket.
  • the rear end of the brake band is fixed to the housing and the front end of the brake band after wrapping the brake drum in the direction of rotation of the brake drum on the connected to the hand guard lever arm so that the brake band on the one hand by Vorverlegen the hand guard triggered and caused by releasing a preloaded spring pivoting of the brake lever is tightened on the brake drum and on the other hand can move independently of the brake lever in the pulling direction.
  • This determination of the brake band on the brake lever ensures that the brake band in the event of activation of the outlet brake can move forward relative to the brake lever and thus tighten on the brake drum.
  • the brake band is fastened with its front end to a one-armed lever which is pivotally mounted on the coupled with the hand guard lever arm of the brake lever and is supported at inactive spout brake with a stop on the lever arm on its front side facing away from the Bremsbandende leading edge ,
  • the brake band can be set with its front end via a pin-slot connection in the hand lever coupled to the lever arm of the brake lever so that the pin rests against the brake band facing the end of the slot with inactive spill brake.
  • the slot can be arranged in the lever arm of the brake lever or in the brake band itself. Accordingly, the pin on the brake band or the lever arm is fixed. In the latter case, the pin is preferably formed by the leading edge of the brake drum of the passing through the slot in the brake band brake lever.
  • the brake band attachment to the brake lever on the located between the brake lever and the brake drum brake band section engages in both cases, the brake band attachment to the brake lever on the located between the brake lever and the brake drum brake band section, a spring force, which is directed away from the brake lever to the brake drum.
  • This spring force ensures a safe return of the brake band to its original position when inactive Chain braking device.
  • the spring force is realized by a tension spring which is fixed on the one hand on the brake band and on the other hand on the housing.
  • chain brake device electromotive chainsaw has a housing 10, at its rear end a first handle 11 and on the front end side support teeth 12 are formed for attaching the chainsaw to the workpiece to be sawn.
  • a second handle 13 is arranged on its upper side, which extends like a bow transversely to the longitudinal axis of the housing 10, in FIG. 1, thus perpendicular to the plane of the drawing.
  • the second handle 13 is preceded by a hand guard 14, which - as will be described - is connected to the chain brake device and can be pivoted in two pivot positions A and B.
  • the chain brake device comprises a brake drum 16 and the brake drum 16 looping around the brake band 17, the a release position in which the brake drum 16 can rotate unobstructed under the brake band 17, in a brake drum 16 braking position braking can be transferred.
  • the brake drum 16 is non-rotatably mounted on the output shaft 44 of a drive motor, which also rotatably receives a drive pinion 45 which drives a gear in the housing 10 rotatably mounted sprocket 46 via a gear (FIGS. 13 and 14).
  • the sprocket 46 is engaged with a saw chain 47, which is guided in a known manner on a protruding from the housing 10 sword.
  • the chain brake device is triggered by two actuators, one of which is designed as a kickback brake 18 for the rapid stop of the saw chain (kickback) and the other as a discharge brake 19, which becomes effective as soon as the drive motor designed here as an electric motor by means of an electrical circuit arranged in the circuit - / off switch 20 is turned off.
  • the non-return brake 18 has a two-armed brake lever 21 pivotally mounted on the housing 10 at pivot point 29, at the one lever arm 211 of the hand guard 14 engages and the other lever arm 212 is coupled via a toggle lever 36 with a shut-off member 22 for switching off the sprocket 46 acting on the drive torque ,
  • the shut-off member 22 acts on an arranged in the circuit of the electric motor breaker and stops the electric motor.
  • the toggle lever 36 includes an axially displaceable under the biasing force of a compression spring 37, on the shut-off member 22 acting slider 361 and a hinged on the one hand to the slider 361 and the other hand on the lever arm 212 coupling member 362.
  • a befindlichem hand guard 14 of the toggle lever 36 is stretched (shown in solid in Fig. 1) and the compression spring 37 stretched ,
  • the brake band 17 is fastened with its rear end 171 to the housing 10, guided over a fixed to the housing 10 deflection pin 23 and fixed by wrapping the brake drum 16 in the direction of rotation of the brake drum 16 with its front end 172 on the associated with the hand guard 14 lever arm 211.
  • the determination of the front end 172 of the brake band 17 is carried out in such a way that the brake band 17 is tightened on the brake drum 16 by means of forward displacement of the hand guard 14 in the direction of arrow 15 in Fig. 1 Schwenking of the brake lever 21 and on the other hand independent of Brake lever 21 can move in the pulling direction.
  • This determination of the front end 172 of the brake band 17 is realized in the embodiment of FIG. 1, characterized in that the front end 172 of the brake band 17 is fixed to a one-armed lever 24 which on the hand guard 14 connected to the lever arm 211 of the brake lever 21 to a pivot axis 25 is pivotally fixed. If the discharge brake 19 is inactive, that is, it is in its standby position during operation of the chain saw, then the lever 24 is in contact with a stop 26 on the lever arm 211, namely on its front edge 211a facing away from the brake band 17. If the outlet brake 19 is activated, the front end 172 of the brake band 17 pushes forward, thereby pivoting the lever 24 clockwise in FIG. 1.
  • Fig. 2 shows the position of the brake lever 21 during operation of the chain saw and not activated chain brake device.
  • Fig. 3 shows the position of the brake lever 21 when triggered outlet brake 19 and
  • Fig. 4 shows the position of the brake lever 21 when triggered return brake 18.
  • a tension spring 27 ensures the safe return of the brake band 17 in its initial position with inactive chain brake device and accesses this with her a spring end on the lying between the brake lever 21 and brake drum 16 brake band section and is fixed to the housing side with its other spring end, so that their tensile force is directed toward the brake band 17 towards the brake drum 16. Under the action of this tension spring 27, the lever 24 rests with its stop 26 in the ready position of the chain brake device (FIG. 2) against the front edge 211 a of the lever arm 11.
  • the backlash brake 18 is triggered by the hand guard 14 abuts the user's hand, which encompasses the second handgrip 13, as a result of an upwardly directed non-return movement of the housing 10, and is thereby shown in the direction of arrow 15 from its position A shown in FIG Position B is pivoted.
  • the brake lever 21 in Fig. 1 in the clockwise direction in the position shown in dashed lines, as shown in FIG. 4, pivots.
  • the overpressed toggle lever 36 is unlocked and the prestressed compression spring 37 presses the brake lever 21 forward.
  • the outlet brake 19 has a brake release element 30, which is pressed in the region of the brake drum 16 with spring cork on the brake band 17 and is lifted with manual actuation of an actuator 28 for putting the chainsaw against the spring force of the brake band 17.
  • the brake release element 30 is designed as a pivotally held in the housing 10, two-armed transmission lever 31, which of a housing 10 is supported on the compression spring 32 loaded a lever arm 311 has a resting on the brake band 17 brake section 311a, and the other Lever arm 312 coupled to the actuator 28, here integrally connected thereto is. Under the action of the compression spring 32, the transmission lever 31 assumes the position shown in dashed lines in FIG.
  • the lever arm 312 releases the switching element 201 of the on / off switch 20 so that it opens and shuts off the electric motor.
  • the brake section 311a is pressed by the compression spring 32 onto the brake band 17.
  • the brake band 17 shifts radially to the brake drum 16.
  • friction force is applied to a force component tangential to the brake drum 16, which places the brake band 17 further around the brake drum 16 and reinforces the wrap (self-wrap effect). and so the brake drum 16 decelerates.
  • the front end 172 of the brake band 17 shifts forward against the force of the tension spring 27, so that the lever 24, which is held pivotably on the brake lever 21, assumes the position shown in FIG.
  • the brake section 311a is designed as a brake shoe 33 fixed to the lever arm 311 educated.
  • the brake shoe 33 rests with a cylindrically curved braking surface on the brake band 17, which is adapted to the drum shell of the brake drum 16, so that a flat contact of the brake shoe 33 on the brake band 17 is achieved.
  • the design of the braking or contact surface determines the friction between the brake shoe 33 and the brake band 17, which can be additionally influenced by coating or by hardening the braking surface.
  • the brake shoe 33 is received in a U-shaped brake shoe guide 38 formed by the lever arm 311 and is supported radially to the brake drum 16 via a web 39 at the bottom of the brake shoe 33.
  • a stop 40 (FIGS. 11 and 12) which is set to at a minimum approved brake band thickness of the transmission lever 31 is no longer able to apply a contact pressure on the brake shoe 33 on the brake band 17.
  • the discharge brake 19 is inoperable, and the user is made aware of the necessity of replacing the brake band 17.
  • this is the stop 40 on the housing 10 is arranged so that the over the brake band 17 laterally projecting brake shoe 33 at the permitted minimum thickness of the brake band 17 rests against the stop 40.
  • the lever 311 brake shoe guide 38 with the housing-fixed stop cooperate, which is then to be arranged according to the housing 10.
  • the stop 40 is formed on the brake drum 16.
  • the brake drum 16 is made wider than the resting on its brake band 17 and takes this in a centrally inserted into the brake drum 16 circumferential groove 41.
  • the radial depth of the circumferential groove 41 is set so that upon reaching the approved minimum thickness of the brake band 17 of the brake band 17 projecting brake shoe 33 is now on the stop 40 forming circumference of the brake drum 16 touches, so that the brake band 17 no longer to the Brake drum 16 is pressed and the outlet brake 19 is inoperative.
  • the transmission lever 31 can be designed as a sheet metal bent part, to which the braking section 311a designed as a circular arc section is formed directly.
  • the brake shoe as a separate part is eliminated.
  • a brake shoe and one or more rotatable pinch rollers can be provided on the lever arm 311, whereby the frictional force can be further reduced.
  • the outlet brake 19 is modified to the effect that the brake shoe 33 'not on Transmission lever 31 is fixed, but in a housing-fixed brake shoe guide 38 'is added so that it is displaceable in the circumferential direction of the brake drum 16 within limits.
  • the brake shoe 33 'and the brake shoe guide 38' have at their front end in the direction of rotation of the brake drum 16 in each case a bevel 42 and 43, respectively.
  • the two bevels 42, 43 are coordinated so that the brake shoe 33 'at a displacement in the direction of rotation of the brake drum 16 is keyed with its bevel 42 between the bevel 43 on the brake shoe guide 38' and the brake band 17.
  • FIG. 13 shows the outlet brake 19 in the released state, that is to say when the chain saw is running.
  • FIG. 14 shows the outlet brake 19 in the active state, as in the case of a stationary chain saw. Components that match those in Fig. 1 are given the same reference numerals.
  • Fig. 5-7 an alternative attachment of the front end 172 of the brake band 17 is shown on the brake lever 21, which in the same manner as the brake lever 21 pivotally mounted lever 24 in the event of triggering the outlet brake 19, a movement of the brake band 17 in the Pull direction permits.
  • the front end 172 of the brake band 17 is attached to a pin 34 which is slidably received in an inserted into the associated with the hand guard 14 lever arm 211 slot 35.
  • the slot 35 extends in the extension of the brake band 17 over the entire width of the lever arm 211.
  • a further attachment possibility of the front end 172 of the brake band 17 on the brake lever 21 is shown.
  • a slot 48 is provided in the front end region of the brake band 17, through which the lever arm 211 protrudes.
  • the ready position of the chain brake device shown in Fig. 8 is the from the brake drum 16 facing away from the front edge 491 of an introduced into the brake lever 21 indentation 49 at the front end of the elongated hole 48 under the force of the tension spring 27 at.
  • the brake band 17 pushes forward due to the size of the elongated hole 48 with the position of the brake lever 21 unchanged (FIG. 9).

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

Claims (9)

  1. Scie à moteur comportant une chaîne-scie (37) entraînée par un pignon à chaîne (46) porté par un boîtier (10) et logé en rotation dans celui-ci ainsi qu'une installation de frein de chaîne logée dans le boîtier, cette installation comportant un frein anti-retour (18) pour l'arrêt d'urgence de la chaîne-scie (Kickback) et un frein de fin de course (19), le frein anti-retour (18) étant actionné par un organe de protection des mains (14) servant de dispositif de déclenchement, qui déclenché, tire une bande de freinage (17) entourant un tambour de frein (16), notamment par effet d'enveloppement direct, ce tambour étant installé dans la ligne de transmission du pignon à chaîne (46),
    et lorsque l'organe de protection (14) n'est pas déclenché, le tambour de frein (16) peut tourner sans être freiné sous la bande de freinage (17) non tendue et
    le frein de fin de course (19) est activé lors du relâchement d'un organe d'actionnement (28) servant de dispositif de déclenchement manuel, notamment réalisé sous forme de bouton-poussoir, pour la mise en marche de la chaîne-scie,
    caractérisée en ce que
    le frein de fin de course (19) comporte un élément de déclenchement de frein (30) appliqué contre la bande de freinage (17) au niveau du tambour de frein (16) avec la force d'un ressort, cet élément de déclenchement se soulevant de la bande de freinage (17) contre la force du ressort lorsque l'organe d'actionnement (28) est commandé manuellement, libérant ainsi le frein de fin de course (19).
  2. Scie à moteur selon la revendication 1,
    caractérisée en ce que
    le frein de fin de course (19) est conçu pour que le frottement entre l'élément de déclenchement de frein (30) et la bande de freinage (17) soit inférieur au frottement entre la bande de freinage (17) et le tambour de frein (16).
  3. Scie à moteur selon la revendication 1 ou 2,
    caractérisée en ce que
    l'élément de déclenchement de frein (30) comporte un levier de transmission (31) à deux bras, monté pivotant dans le boîtier (10), dont un bras (311), sollicité par un ressort (32), comporte un segment de frein (311 a) appliqué contre la bande de freinage (17) et dont l'autre bras (312) est couplé à l'organe d'actionnement (28).
  4. Scie à moteur selon la revendication 3,
    caractérisée en ce que
    le segment de frein (311a) est formé par un patin de frein (33) fixé au bras (311) ou faisant corps avec celui-ci, ce patin s'appliquant contre la bande de freinage (17) par une surface de freinage, le cas échéant revêtue ou durcie, et la surface de freinage est bombée suivant une forme cylindrique adaptée à l'enveloppe du tambour de frein (16).
  5. Scie à moteur selon l'une des revendications 1 à 4,
    caractérisée en ce que
    le frein anti-retour (18) comporte un levier de frein (21) à deux bras monté pivotant dans le boîtier (10) dont un bras (211) coopère avec l'organe de protection des mains (14) et dont l'autre bras (212) est couplé à un organe de coupure (22) pour couper le couple moteur appliqué au pignon à chaîne,
    l'extrémité arrière (171) de la bande de freinage (17) est fixée au boîtier (10) et son extrémité avant (172) entoure le tambour de frein (16) dans le sens de rotation en étant fixée au bras (211) relié à l'organe de protection (14) pour d'une part serrer la bande de freinage (17) contre le tambour de frein (16) par le déplacement vers l'avant de l'organe de protection (14) déclenché et le basculement du levier de frein (21), produit par la libération d'un ressort précontraint (37) et d'autre part permettre à la bande de freinage de coulisser dans la direction de traction, indépendamment du levier de frein (21), l'extrémité avant (172) de la bande de freinage étant fixée à un levier (24) à un bras monté pivotant sur le bras (211) du levier de frein (21) couplé à l'organe de protection (14) et qui, lorsque le frein de fin de course (19) est inactif, s'appuie par une butée (26) contre l'arête avant (211a) du bras (211) à l'opposé de la bande de freinage (17).
  6. Scie à moteur selon l'une des revendications 1 à 4,
    caractérisée en ce que
    le frein anti-retour (18) comporte un levier de frein (21) à deux bras montés pivotant sur le boîtier (10) et dont un bras (211) coopère avec l'organe de protection (14) et son autre bras (212) est couplé à un organe de coupure (22) pour couper le couple moteur appliqué au pignon à chaîne et,
    l'extrémité arrière (171) de la bande de freinage (17) est fixée au boîtier (10) alors que son extrémité avant (172) enveloppe le tambour de frein (16) dans son sens de rotation pour être fixée au bras (211) du levier relié à l'organe de protection (14),
    la bande de freinage (17) est d'une part serrée par traction par déplacement vers l'avant de l'organe de protection des mains (14) déclenché et par le basculement du levier de frein (21) produit par la libération d'un ressort précontraint (37), pour être serré contre le tambour de frein (16) et d'autre part la bande de freinage (17) peut coulisser dans la direction de traction indépendamment du levier de frein (21), l'extrémité avant de la bande de freinage (17) étant fixée au bras (211) du levier de frein (21) couplé à l'organe de protection des mains (14) par une liaison à trou oblong et broche (34, 35) de façon que lorsque le frein de fin de course (19) est inactif, la broche (34) soit appliquée contre l'extrémité du trou oblong (35) tournée vers la bande de freinage (17).
  7. Scie à moteur selon les revendications 5 ou 6,
    caractérisée en ce que
    le segment de bande de freinage qui se trouve entre le tambour de frein (16) et le levier de frein (21) est soumis à une force de ressort dirigée à l'opposé du levier de frein (21), cette force étant de préférence appliquée par un ressort de traction (27) dont une extrémité est fixée à la bande de freinage (17) et l'autre, au boîtier (10).
  8. Scie à moteur selon l'une des revendications 3 à 7,
    caractérisée en ce que
    dans le cas d'un pignon à chaîne (46) entraîné par un moteur électrique, le bras (312) du levier de transmission (31) portant l'organe d'actionnement (28) sollicite l'élément de commutation (201) d'un interrupteur marche/arrêt électrique (20) du circuit électrique du moteur électrique.
  9. Scie à moteur selon la revendication 8,
    caractérisée en ce que
    l'organe de coupure (22) agit sur un interrupteur électrique installé dans le circuit électrique du moteur électrique pour couper le couple d'entraînement appliqué au pignon à chaîne (46).
EP20000110853 1999-07-07 2000-05-23 Scie à chaîne à dispositif pour freiner la chaîne coupante Expired - Lifetime EP1066933B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999131251 DE19931251A1 (de) 1999-07-07 1999-07-07 Motorkettensäge
DE19931251 1999-07-07

Publications (3)

Publication Number Publication Date
EP1066933A2 EP1066933A2 (fr) 2001-01-10
EP1066933A3 EP1066933A3 (fr) 2004-02-18
EP1066933B1 true EP1066933B1 (fr) 2006-09-20

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP20000110853 Expired - Lifetime EP1066933B1 (fr) 1999-07-07 2000-05-23 Scie à chaîne à dispositif pour freiner la chaîne coupante

Country Status (3)

Country Link
EP (1) EP1066933B1 (fr)
JP (1) JP2001047403A (fr)
DE (2) DE19931251A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101570027B (zh) * 2008-04-30 2013-01-30 苏州宝时得电动工具有限公司 电动工具制动装置
CN101758518B (zh) * 2008-12-23 2013-01-30 苏州宝时得电动工具有限公司 电动工具制动装置

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ITVE20030014U1 (it) * 2003-07-08 2005-01-09 Ggp Italy Spa Dispositivo di sicurezza per elettroseghe o motoseghe a catena. -
DE102004020421B4 (de) * 2004-04-27 2016-01-28 Robert Bosch Gmbh Motorkettensäge mit Rückschlag-Bremse und Auslauf-Bremse
SE0402907D0 (sv) * 2004-11-29 2004-11-29 Electrolux Ab Chain saw brake arrangement
GB0515884D0 (en) 2005-08-02 2005-09-07 Bosch Gmbh Robert Improvements in or relating to chainsaws
DE202006008733U1 (de) 2006-05-31 2007-10-11 Dolmar Gmbh Bremsbandhalterung
US8176643B2 (en) 2006-10-19 2012-05-15 Husqvarna Zenoah Co Ltd. Brake system of chain saw and chain saw
US8469001B2 (en) 2008-11-20 2013-06-25 Yamabiko Corporation Work apparatus with internal combustion engine
JP5297290B2 (ja) * 2009-07-23 2013-09-25 株式会社やまびこ チェンソー
EP2286970A1 (fr) 2009-08-18 2011-02-23 Robert Bosch GmbH Machine outil et procédé de retour d'informations à l'utilsateur
JP5462575B2 (ja) 2009-10-05 2014-04-02 株式会社マキタ 電動工具
CN102398078B (zh) * 2011-10-25 2013-12-18 浙江亚特电器有限公司 链锯机械刹车结构
JP5983926B2 (ja) * 2012-08-15 2016-09-06 日立工機株式会社 チェーンソー
CN105127511B (zh) * 2015-09-08 2017-08-18 嘉兴百佳机械有限公司 一种电链锯刹车装置中刹车连杆的支撑机构
DE102017222077A1 (de) * 2017-03-16 2018-09-20 Robert Bosch Gmbh Kettensäge
CN113119231B (zh) * 2019-12-31 2023-06-13 苏州金莱克精密机械有限公司 一种链锯的刹车机构及链锯
US12064894B2 (en) 2020-09-04 2024-08-20 Milwaukee Electric Tool Corporation Chainsaw
AU2021229195B2 (en) 2021-09-08 2026-02-05 Techtronic Cordless Gp Systems and methods for chainsaw lubricant delivery control
DE102022211294A1 (de) 2022-10-25 2024-04-25 Robert Bosch Gesellschaft mit beschränkter Haftung Handwerkzeugmaschine und Handwerkzeugmaschinenvorrichtung

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CN101570027B (zh) * 2008-04-30 2013-01-30 苏州宝时得电动工具有限公司 电动工具制动装置
CN101758518B (zh) * 2008-12-23 2013-01-30 苏州宝时得电动工具有限公司 电动工具制动装置

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EP1066933A3 (fr) 2004-02-18
EP1066933A2 (fr) 2001-01-10
DE50013484D1 (de) 2006-11-02
DE19931251A1 (de) 2001-01-11
JP2001047403A (ja) 2001-02-20

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