EP3687725B1 - Système de scie à chaîne - Google Patents

Système de scie à chaîne Download PDF

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Publication number
EP3687725B1
EP3687725B1 EP18765434.8A EP18765434A EP3687725B1 EP 3687725 B1 EP3687725 B1 EP 3687725B1 EP 18765434 A EP18765434 A EP 18765434A EP 3687725 B1 EP3687725 B1 EP 3687725B1
Authority
EP
European Patent Office
Prior art keywords
chainsaw
unit
saw blade
locking
blade module
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.)
Active
Application number
EP18765434.8A
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German (de)
English (en)
Other versions
EP3687725A1 (fr
Inventor
Jack Roden
Attila Nagy
Richard Wilkins
Richard Poole
Csaba Szmutko
John Lister
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
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3687725A1 publication Critical patent/EP3687725A1/fr
Application granted granted Critical
Publication of EP3687725B1 publication Critical patent/EP3687725B1/fr
Active 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
    • B27B17/02—Chain saws equipped with guide bar
    • 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

Definitions

  • the invention relates to a chain saw system according to the preambles of claims 1, 3 and 5.
  • a chain saw system with a chainsaw and a saw blade module which has a cutting strand and at least one guide unit for guiding at least part of the cutting strand, with at least one coupling unit for coupling the saw blade module to the chainsaw, has already been proposed.
  • a chain saw system with a chainsaw and a saw blade module, which has a cutting strand and at least one guide unit for guiding at least part of the cutting strand, with at least one coupling unit for coupling the saw blade module to the chainsaw.
  • the DE 10 2012 211 094 A1 discloses a chain saw system according to the preambles of claims 1, 3 and 5.
  • the invention provides a chain saw system with the features of claim 1.
  • a "coupling unit” is to be understood here in particular as a unit which is provided to effectively connect the saw blade module by means of a form-fitting and / or force-fitting connection for machining a workpiece with the portable chainsaw.
  • forces and / or torques can be transmitted from a gear unit of the portable chain saw to drive the cutting strand to the saw blade module in an operating state of the portable chain saw, in particular by means of a torque transmission element of the portable chain saw.
  • the portable chainsaw preferably has a torque transmission element which, when the saw blade module is coupled to the portable chainsaw by means of the coupling unit, engages in the cutting strand to drive the cutting strand.
  • the torque transmission element is preferably arranged on the portable chainsaw, in particular arranged in a rotatable manner.
  • the torque transmission element can in particular be designed as a toothed shaft of a gear unit of the portable chainsaw.
  • the torque transmission element can also be designed as another component that appears sensible to a person skilled in the art.
  • a "release unit” is to be understood in this context in particular as a unit which is intended to release a positive and / or non-positive connection between the saw blade module and the chainsaw that is produced by means of the coupling unit and couples the saw blade module to the chainsaw.
  • the release unit is provided to release the positive and / or non-positive connection between the saw blade module and the chainsaw to separate the saw blade module from the chainsaw.
  • An "actuating element" is to be understood in particular as an element that is intended to receive an input variable from an operator during an operating process and, in particular, to be contacted directly by an operator, touching the actuating element being sensed and / or exerted on the actuating element Operating force sensed and / or mechanically for the operation of a unit, in particular a release mechanism of the release unit, is forwarded.
  • the actuation element is designed as an actuation lever and / or an actuation button.
  • the saw blade module is designed in particular as a closed system.
  • the term "closed system” is intended here to define in particular a system which comprises at least two components which, by means of cooperation in a removed state of the system from a system superordinate to the system, such as the portable chainsaw, maintain a functionality and / or which are captively connected to one another in the removed state.
  • the at least two components of the closed system are preferably connected to one another at least essentially in a non-detachable manner for an operator.
  • "At least essentially inseparable” is to be understood here in particular as a connection of at least two components which can only be separated from one another with the aid of cutting tools, such as a saw, in particular a mechanical saw etc. and / or chemical separating agents, such as solvents etc. are.
  • a "cutting strand” is to be understood here in particular as a unit which is provided to locally abolish an atomic cohesion of a workpiece to be machined, in particular by means of mechanical separation and / or by means of mechanical removal of material particles from the workpiece.
  • the cutting strand is preferably provided for separating the workpiece into at least two physically separate parts and / or at least partially separating and / or removing material particles of the workpiece starting from a surface of the workpiece.
  • the cutting strand is moved circumferentially in at least one operating state, in particular along a circumferential direction of the guide unit of the saw blade module.
  • the cutting strand is particularly preferably designed as a cutting chain.
  • the cutting strand has a different configuration that appears sensible to a person skilled in the art, such as, for example, a configuration as a cutting tape on which several cutting strand segments of the cutting strand are arranged.
  • a "guide unit” is to be understood here in particular as a unit which is provided to exert a constraining force on the cutting strand at least along a direction perpendicular to the cutting direction of the cutting strand in order to provide a possibility of movement of the cutting strand along the cutting direction.
  • the guide unit preferably has at least one guide element, in particular a guide groove, through which the cutting strand is at least partially guided.
  • the cutting strand is preferred, viewed in the cutting plane of the cutting strand, guided along an entire circumference of the guide unit by the guide unit by means of the guide element, in particular the guide groove.
  • a "cutting direction” is to be understood here in particular as a direction along which the cutting strand for generating a cutting gap and / or for separating and / or removing material particles from a workpiece to be machined in at least one operating state as a result of a drive force and / or a drive torque, in particular in the guide unit, is moved.
  • “Provided” is to be understood in particular as specifically programmed, designed and / or equipped. The fact that an object is provided for a specific function should be understood in particular to mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
  • the cutting strand can preferably be tensioned and / or pre-tensioned by means of a pre-tensioning unit of the saw blade module, in particular when the cutting strand is in a state arranged on the guide unit.
  • the pretensioning unit is preferably provided to compensate for a production-related play and / or a production-related tolerance, in particular when the saw blade module is in a state that is coupled to the chain saw.
  • the pretensioning unit is preferably provided to compensate for a production-related play and / or a production-related tolerance, preferably automatically, in particular when the saw blade module is in a state that is coupled to the chain saw.
  • the pretensioning unit is particularly preferably provided to compensate for an elongation of the cutting strand, in particular an elongation of the cutting strand caused by machining a workpiece.
  • the pretensioning unit is particularly preferably provided to compensate for the elongation of the cutting strand, preferably automatically, in particular an elongation of the cutting strand caused by machining a workpiece.
  • the elongation of the cutting strand in particular an elongation of the cutting strand caused by machining a workpiece, can preferably be automatically compensated for by means of the pretensioning unit.
  • “automatic play and / or tolerance compensation” is intended to mean, in particular, an automatic elongation compensation that can in particular be carried out free of operator intervention and / or an automatic, in particular Compensation of a production-related play and / or a production-related tolerance of the cutting strand in a state arranged on the guide unit, which can be carried out free of operator intervention, can be understood by means of an action of at least one tensioning force on the cutting strand, in particular by an element formed separately from the cutting strand. It is particularly preferred that the automatic tensioning and / or the automatic pre-tensioning of the cutting strand can be achieved without intervention by an operator of the portable chainsaw.
  • the pretensioning unit preferably comprises at least one pretensioning element arranged on a housing of the saw blade module, in particular a spring element.
  • the prestressing element is designed as a compression spring.
  • the prestressing element is preferably provided to apply a prestressing force to the guide unit on which the cutting strand is arranged, in particular with a prestressing force directed away from the housing.
  • the guide unit is preferably movably, in particular movably translationally, mounted on the housing.
  • a generic chain saw system with advantageous properties with regard to a coupling of a saw blade module with a portable chain saw and a decoupling of the saw blade module from the portable chain saw can be provided.
  • an advantageously simple, tool-free detachment of the saw blade module from the chain saw can be made possible.
  • an advantageously simple and / or quick change of the saw blade module can be achieved.
  • the locking unit is intended to prevent a function of the release unit during operation, in particular when the chain saw engine is running, at least in such a way that the positive and / or non-positive connection between the saw blade module and the chain saw that is produced by means of the coupling unit is released Saw blade module and the chainsaw is at least largely prevented.
  • the locking unit is for this provided to block a release mechanism of the release unit at least partially, in particular mechanically, and / or at least partially to decouple it from the coupling unit in terms of its effectiveness. This can advantageously prevent the saw blade module from loosening during operation of the chain saw.
  • the decoupling blocking element is arranged, in particular, completely outside of an actuation path of the actuation element of the release unit when the chain saw is in a non-operating state.
  • the decoupling blocking element is arranged at least partially in a movement path of the actuating element during operation of the chainsaw, in particular while the engine of the chainsaw is running.
  • the decoupling locking element is in particular movably mounted and, when the chain saw is put into operation, at least partially movable, in particular displaceable and / or pivotable, in an actuation path of the actuation element of the release unit. In this way, actuation of the actuating element during operation of the chainsaw can be prevented in an advantageously simple and / or secure manner.
  • the blocking unit preferably has at least one transmission element which technically couples an operating switch of the chainsaw to the decoupling blocking element and which is provided to transmit a movement of the operating switch to the decoupling blocking element.
  • the transmission element is designed in particular as a transmission arm.
  • at least one end of the transmission element is connected to an operating switch of the chainsaw.
  • at least the end of the transmission element connected to the operating switch is provided to at least substantially follow a movement of the operating switch.
  • the transmission element is preferably provided to follow a movement of the operating switch at least essentially over its entire longitudinal extent.
  • the decoupling blocking element is arranged in particular on a part of the transmission element that extends away from the operating switch and is connected to the latter.
  • the transmission element provided to transmit a movement of the operating switch to the decoupling locking element in such a way that the decoupling locking element is at least partially in an actuation path of the actuating element of the release unit when the operating switch of the chainsaw is in an operating position. Furthermore, the transmission element is provided in particular to transmit a movement of the operating switch to the decoupling locking element in such a way that the decoupling locking element is completely outside of an actuation path of the actuating element of the release unit when the operating switch of the chainsaw is in a rest position. In this way, an advantageously simple and / or reliable blocking of the actuating element of the release unit can be brought about.
  • the invention is based on a chain saw system with a chain saw and a saw blade module, which has a cutting strand and at least one guide unit for guiding at least part of the cutting strand, with at least one coupling unit for coupling the saw blade module to the chain saw, the chain saw having at least one release unit with at least one actuating element, which is provided for tool-free decoupling of the at least one saw blade module coupled via the coupling unit.
  • the chainsaw has at least one locking unit which is provided at least to prevent the chainsaw from being put into operation during a decoupling operating state of the release unit.
  • the locking unit is provided in particular to prevent the chainsaw from being put into operation as long as the actuating element of the release unit is in a decoupling position.
  • the locking unit can be designed at least partially in one piece with the locking unit for blocking the release unit during operation of the chainsaw.
  • the chainsaw preferably has a locking unit which is provided both to block the release unit during operation of the chainsaw and to prevent the chainsaws from being put into operation when the release unit is in an uncoupling operating state.
  • the locking unit is provided to prevent a motor of the chainsaw from being started up during a decoupling operating state of the release unit.
  • the locking unit can be provided for starting up the chainsaw, in particular starting up to prevent electronically and / or mechanically.
  • the locking unit can be provided to decouple a torque transmission element of the chainsaw from a motor of the chainsaw during a decoupling operating state of the release unit, so that no torque can be transmitted to the cutting strand of the saw blade module.
  • the locking unit has at least one operating locking element which is provided to block an operation of an operating switch of the chain saw, in particular mechanically, during a decoupling operating state of the release unit.
  • the operating blocking element is provided during a decoupling operating state of the release unit, in particular, to block an actuation path of the operating switch at least largely mechanically, directly or indirectly.
  • the operating blocking element is provided to directly or indirectly block the operating switch of the chainsaw in a rest position during a decoupling operating state of the release unit.
  • the operating blocking element is connected to the actuating element of the release unit or is at least partially formed in one piece with the actuating element of the release unit.
  • In one piece is to be understood in particular as materially bonded, such as by a welding process and / or adhesive process, etc., and particularly advantageously molded, such as by production from a cast and / or by production in a one-component or multi-component injection molding process.
  • the operating blocking element is provided to at least substantially follow a movement of the actuating element of the release unit.
  • the operating blocking element is provided to act on the decoupling blocking element and to block a movement of the decoupling blocking element when the actuating element of the release unit is in a decoupling position.
  • the decoupling blocking element is arranged in particular on a part of the transmission element that extends away from the operating switch and is connected to it, whereby a movement of the transmission element is also blocked by the blockage of the decoupling blocking element.
  • the transmission element is connected to the operating switch of the chainsaw, whereby the movement of the operating switch is blocked.
  • the invention is based on a chain saw system with a chain saw and a saw blade module, which has a cutting strand and at least one guide unit for guiding at least part of the cutting strand, with at least one coupling unit for coupling the saw blade module to the chain saw, the chain saw having at least one Has release unit with at least one actuating element, which is provided for tool-free decoupling of the at least one saw blade module coupled via the coupling unit.
  • the chainsaw has at least one kickback protection element which is provided to at least largely prevent manual actuation of the actuating element of the release unit during operation of the chainsaw.
  • the kickback protection element is designed in particular as a kickback lever.
  • the kickback protection element is provided to be brought from an operating position to a braking position in the event of a kickback of the chain saw system by actuation by an operator of the chain saw system.
  • the kickback protection element is provided to bring about a braking of the chain saw, in particular the motor of the chain saw, in the braking position.
  • the kickback protection element is provided in an operating position to mechanically at least partially and preferably at least largely cover the actuating element of the release unit.
  • the kickback protection element is provided in an operating position to mechanically cover the actuating element at least 70%, preferably at least 80%, preferably at least 90% and particularly advantageously completely.
  • the coupling unit has a locking unit and at least one locking element which is provided to latch within the locking unit.
  • the locking element can be arranged on the saw blade module and the locking unit can be arranged on the chainsaw.
  • the locking element can be arranged on the chainsaw and the locking unit can be arranged on the saw blade module.
  • the locking element can be designed in particular pin-shaped or bolt-shaped.
  • the locking unit has, in particular, a receiving recess which is provided to at least partially receive the locking element.
  • the locking element has at least one latching means which is provided to latch, preferably automatically, within the receiving recess when it is inserted into the receptacle of the locking unit.
  • the latching means can in particular be used as a material recess Material projection, in particular a spring-preloaded expansion head and / or an in particular spring-preloaded clamping head can be formed.
  • the latching means is provided to latch automatically with a corresponding locking element of the locking unit when it is inserted and / or to brace it within the receiving recess, in particular by at least partially spreading it open.
  • the release unit is provided to release the latching connection produced by means of the locking element.
  • the latching connection produced by means of the locking element can be canceled by actuating the actuating element of the release unit. In this way, an advantageously simple and / or secure mechanical coupling between the saw blade module and the chainsaw can be achieved.
  • the locking element has at least one locking head and the locking unit has at least one locking element which is provided to engage behind the locking head at least in one locking state.
  • the locking element is designed as a bolt which has a groove, in particular a circumferential groove.
  • the locking head is formed in particular by the circumferential groove on the bolt.
  • the locking element of the locking unit is provided to engage in the groove when the locking element is inserted into the locking unit.
  • the locking element can be spring-preloaded, as a result of which it automatically engages in the groove and is held in the locking position by a spring force.
  • the locking unit is preferably provided to support and / or transmit transverse forces, in particular along transverse forces that run at least substantially parallel to a drive axis of a torque transmission element of the chain saw. In this way, the saw blade module can advantageously be securely fastened to the chainsaw.
  • the locking unit can preferably have at least one magnetic element which is provided to exert a holding force on the locking element in at least one operating state.
  • the magnetic element is the release unit at least when the actuating element is actuated provided to exert a magnetic holding force on the locking element. This enables the saw blade module to be released from the chain saw in an advantageously secure manner.
  • the chainsaw has at least one receiving recess which is provided to at least partially receive the saw blade module in an assembled state.
  • the receiving recess is at least partially formed by a housing of the chainsaw.
  • the receiving recess has at least one inner contour which at least essentially corresponds to an outer contour of a housing of the saw blade module.
  • the receiving recess of the chain saw is provided to receive at least the housing of the saw blade module.
  • the coupling unit preferably has at least one positioning bolt which is provided to align and / or orient the saw blade module relative to the chainsaw.
  • the receiving recess of the chainsaw is provided to align and / or orient the saw blade module relative to the chainsaw.
  • the positioning bolt runs at least substantially parallel to the locking element. "Essentially parallel” is to be understood here to mean in particular an alignment of a direction relative to a reference direction, in particular in a plane, the direction having a deviation from the reference direction, in particular less than 8 °, advantageously less than 5 ° and particularly advantageously less than 2 °. This enables an advantageously simple positioning of the saw blade on the chainsaw.
  • the positioning bolt is preferably provided in at least one state of the saw blade module arranged on the chain saw to support forces and / or moments acting on the chain saw via the saw blade module, in particular forces running at least substantially perpendicular to a drive axis of the torque transmission element of the chain saw and / or moments.
  • the positioning bolt is preferably designed as an abutment for a drive torque support and / or drive force support.
  • the saw blade module can preferably be arranged on the chain saw at least essentially with little play by means of the positioning bolt.
  • a saw blade module for use in a chain saw system according to the invention, with at least one coupling unit for coupling the saw blade module to a chain saw, a cutting strand and at least one guide unit for guiding at least part of the cutting strand is proposed.
  • a chainsaw for use in a chain saw system according to the invention is also proposed.
  • the chainsaw has at least one motor, in particular an electric or internal combustion engine, which is provided to drive a cutting strand of a saw blade module coupled to the chainsaw.
  • the chain saw system according to the invention, the saw blade module and / or the machine tool system should / should not be restricted to the application and embodiment described above.
  • the chain saw system according to the invention, the saw blade module and / or the machine tool system can have a number of individual elements, components and units that differs from a number of individual elements, components and units mentioned herein in order to fulfill a mode of operation described herein.
  • values lying within the stated limits should also be deemed disclosed and can be used in any way.
  • FIG 1 shows a perspective illustration of a chain saw system 10a with a chain saw 12a and a saw blade module 14a in an assembled state.
  • Figure 2 shows a perspective view of the chain saw system 10a in an unassembled state, in which the saw blade module 14a is decoupled from the chain saw 12a.
  • the saw blade module 14a has a cutting strand 18a and at least one guide unit 50a for guiding at least part of the cutting strand 18a.
  • the chain saw system 10a also has a coupling unit 16a for coupling the saw blade module 14a to the chain saw 12a.
  • the coupling unit 16a is provided to connect the saw blade module 14a by means of a form-fitting and / or force-fitting connection for machining a workpiece with the portable chainsaw 12a.
  • the chain saw 12a preferably has a torque transmission element 52a which, when the saw blade module 14a is coupled to the chain saw 12a by means of the coupling unit 16a, is used to drive the cutting strand 18a into the cutting strand 18a or into a pinion 98a rotatably mounted in a housing 60a of the saw blade module 14a (see. Figure 3b ) of the saw blade module 14a engages.
  • the torque transmission element 52a is rotatably mounted on the chainsaw 12a.
  • the torque transmission element 52a can in particular be designed as a toothed shaft 54a of a gear unit of the chainsaw 12a.
  • the chainsaw 12a has at least one receiving recess 48a, which is provided to at least partially receive the saw blade module 14a in an assembled state.
  • the receiving recess 48a has at least one inner contour which at least essentially corresponds to an outer contour of the housing 60a of the saw blade module 14a.
  • the coupling unit 16a has a locking unit 36a and at least one locking element 38a, which is provided to latch within the locking unit 36a. Furthermore, the chainsaw 12a at least a release unit 20a with at least one actuating element 22a, which is provided for tool-free decoupling of the at least one saw blade module 14a coupled via the coupling unit 16a.
  • the locking unit 36a and the release unit 20a are at least partially formed in one piece.
  • Figure 3a shows the locking unit 36a and the release unit 20a in an exploded view.
  • the locking element 38a has at least one locking head 40a and the locking unit 36a has at least one locking means 42a, which is provided to engage behind the locking head 40a at least in one locking state.
  • the coupling unit 16a here has two locking elements 38a designed as locking pins.
  • a fork element 62a is displaced from a locking position by the locking element 38a.
  • the actuating element 22a of the release unit 20a is rotated into a locking position by a torsion spring 64a.
  • the actuating element 22a has in its interior a cam track 66a which is rotated together with the actuating element 22a.
  • a lever element 68a and a release ring 70a are displaced by a compression spring 72a, whereby the locking means 42a are released and come into a locking position.
  • the coupling unit 16a has at least one positioning bolt 46a, which is provided to align and / or orient the saw blade module 14a relative to the chainsaw 12a.
  • the coupling unit 16a has three positioning bolts 46a, while the chainsaw 12a has a corresponding number of receptacles 58a for the positioning bolts 46a.
  • the positioning bolts 46a engage in the receptacles 58a to position the saw blade module 14a relative to the chainsaw 12a.
  • the release unit 20a is provided to release a positive and / or non-positive connection between the saw blade module 14a and the chainsaw 12a, which is produced by means of the coupling unit 16a and couples the saw blade module 14a with the chainsaw 12a.
  • the release unit 20a is provided for the positive and / or non-positive connection between the saw blade module 14a and the chainsaw that is produced by means of the coupling unit 16a and couples the saw blade module 14a with the chainsaw 12a 12a to separate the saw blade module 14a from the chainsaw 12a.
  • the actuating element 22a of the release unit 20a is actuated in a rotary movement.
  • the cam track 66a creates a pull on the lever element 68a.
  • the locking means 42a are moved out of the locking position by a cam gear element 74a, which is pressed in the direction of the actuating element 22a by means of a spring element 76a.
  • the locking unit 36a has at least one magnetic element 44a, which is provided to exert a holding force on the locking element 38a in at least one operating state.
  • the magnetic element 44a is preferably provided to exert a magnetic holding force on the locking element 38a.
  • the saw blade module 14a preferably comprises at least one pretensioning unit 82a for automatic compensation of a production-related play and / or a production-related tolerance of the cutting strand 18a (cf. Figure 3b ).
  • the pretensioning unit 82a preferably comprises at least one pretensioning element 84a, 86a arranged on the housing 60a of the saw blade module 14a, in particular a spring element.
  • the preload unit 82a has at least two preload elements 84a, 86a, which are designed as spring elements, in particular as compression springs.
  • the prestressing unit 82a has a number of prestressing elements 84a, 86a other than two.
  • the prestressing element (s) 84a, 86a is / are preferably provided to apply a prestressing force to the guide unit 50a on which the cutting strand 18a is arranged, in particular with a prestressing force directed away from the housing.
  • the guide unit 50a is preferably movably, in particular movably translationally, mounted on the housing 60a.
  • the guide unit 50a preferably has at least one movement guide element 88a, in particular a guide groove, on.
  • the movement guide element 88a preferably interacts with at least one, in particular with at least two, counter-guide element (s) 90a, 92a of the saw blade module 14a.
  • the counter-guide element (s) 90a, 92a is / are preferably designed as guide bolts or as guide sleeve (s).
  • the counter-guide element (s) 90a, 92a preferably engage at least partially in the movement guide element 88a, in particular in the movement guide element 88a designed as a guide groove, or penetrate through the movement guide element 88a.
  • a maximum movement distance of the guide unit 50a relative to the housing 60a can preferably be limited by means of the interaction of the movement guide element 88a and the counter-guide element (s) 90a, 92a.
  • the preloading element (s) 84a, 86a is / are preferably supported with one end on the housing 60a, in particular on a wall of the housing 60a that delimits a recess in the housing 60a.
  • the counter-guide element (s) 90a, 92a are supported at a further end on the guide unit 50a and / or on at least one support element 94a, 96a arranged on the guide unit 50a or on a sliding element 100a of the saw blade module 14a.
  • the sliding element 100a is preferably fixed on the guide unit 50a.
  • the sliding element 100a is preferably mounted in the housing 60a so that it can move relative to the housing 60a together with the guide unit 50a, in particular so that it can be moved in a translatory manner.
  • a clamping bolt 102a of the pretensioning unit 82a is fixed on the guide unit 50a and / or on the sliding element 100a.
  • the clamping bolt 102a extends out of the housing 60a, in particular along a direction that is at least substantially perpendicular to a cutting plane of the cutting strand 18a.
  • the clamping bolt 102a extends into the chain saw 12a.
  • the clamping bolt 102a can be brought into operative connection with an eccentric element 104a of the release unit 20a and / or the locking unit 36a.
  • the eccentric element 104a can be acted upon with a force in at least one state of the release unit 20a and / or the locking unit 36a with a tensioning element 106a of the release unit 20a and / or the locking unit 36a.
  • the tensioning element 106a is preferably designed as a torsion spring.
  • the clamping element 106a acts on the eccentric element with a spring force acting in a direction facing away from the clamping bolt 102a.
  • a movement transmission element 108a in particular a gearwheel, of the release unit 20a and / or the locking unit 36a can be moved.
  • the actuating element 22a preferably has an external toothing 110a, which is provided for engagement in the movement transmission element 108a.
  • the movement transmission element 108a is preferably provided to move the eccentric element 104a as a function of a movement of the actuating element 22a, in particular at least in the direction of the clamping bolt 102a.
  • the movement transmission element 108a is preferably provided to move the eccentric element 104a, in particular at least in the direction of the clamping bolt 102a, via a locking element 112a of the release unit 20a and / or the locking unit 36a.
  • the blocking element 112a is preferably provided to block a movement of the eccentric element 104a by the tensioning element 106a in at least one state.
  • the locking element 112a preferably comprises a locking shoulder, which is provided to rest against a locking surface of the eccentric element 104a, at least in one state.
  • the locking element 112a preferably has at least one toothed circle segment which is provided to interact with the movement transmission element 108a.
  • the clamping bolt 102a is inserted into the chainsaw 12a.
  • the blocking element 112a can be moved into a blocking position via the movement transmission element 108a.
  • the locking element 112a comes to rest on the eccentric element 104a and moves it against the spring force of the clamping element 106a in the direction of the clamping bolt 102a.
  • a movement of the eccentric element 104a is secured.
  • the eccentric element 104a can move the tensioning bolt 102a to tension and / or to maintain tension of the cutting strand 18a relative to the housing 60a and / or hold it in one position.
  • the locking element 112a can be moved away from the eccentric element 104a. That Eccentric element 104a can be moved into an initial position by the spring force of tensioning element 106a.
  • the clamping bolt 102a can be moved independently of the eccentric element 104a.
  • the cutting strand 18a is pretensioned by the pretensioning unit 82a.
  • the chainsaw 12a has at least one locking unit 24a, which is provided to prevent decoupling of the saw blade module 14a coupled via the coupling unit 16a by means of the release unit 20a during operation of the chainsaw 12a.
  • the locking unit 24a is in the Figures 4 to 6 shown in different operating states.
  • Figure 4 shows the locking unit 24a in an initial operating state.
  • the locking unit 24a is provided to prevent a function of the release unit 20a during operation of the chainsaw 12a, in particular while the engine is running, in such a way that the positive and / or non-positive connection established by means of the coupling unit 16a between the saw blade module 14a and the chainsaw 12a is prevented.
  • the locking unit 24a has at least one decoupling locking element 26a, which is provided to block an actuation of the actuating element 22a of the release unit 20a during operation of the chainsaw 12a (cf. Figure 5 ).
  • the decoupling blocking element 26a is arranged completely outside of an actuation path of the actuation element 22a of the release unit 20a when the chainsaw 12a is in an idle operating state.
  • the decoupling blocking element 26a is at least partially arranged in a movement path of the actuating element 22a of the release unit 20a.
  • the decoupling locking element 26a is movably mounted and, when the chainsaw 12a is started up, at least partially movable, in particular displaceable and / or pivotable, in an actuation path of the actuation element 22a of the release unit 20a.
  • the locking unit 24a has at least one transmission element 28a which technically couples an operating switch 30a of the chainsaw 12a to the decoupling locking element 26a and which is provided to transmit a movement of the operating switch 30a to the decoupling locking element 26a.
  • the transmission element 28a is designed as a transmission arm.
  • the transmission element 28a is connected at one end 56a to the operating switch 30a of the chainsaw 12a.
  • the connected end 56a of the transmission element 28a is provided to at least substantially follow a movement of the operating switch 30a.
  • the transmission element 28a is preferably provided to follow a movement of the operating switch 30a at least essentially over its entire longitudinal extent.
  • the decoupling blocking element 26a is arranged on the transmission element 28a and connected to it.
  • the transmission element 28a is provided to transmit a movement of the operating switch 30a to the decoupling locking element 26a in such a way that the decoupling locking element 26a is at least partially in an actuation path of the actuating element 22a of the release unit 20a when the operating switch 30a of the chainsaw 12a is in an operating position . This blocks actuation of the actuating element 22a of the release unit 20a.
  • the transmission element 28a is provided to transmit a movement of the operating switch 30a to the decoupling locking element 26a in such a way that the decoupling locking element 26a is completely outside an actuation path of the actuating element 22a of the release unit 20a when the operating switch 30a of the chainsaw 12a is in a rest position .
  • An actuation of the actuating element 22a of the release unit 20a is possible in this state.
  • the locking unit 24a is also provided to prevent the chainsaw from being put into operation during a decoupling operating state of the release unit 20a.
  • the locking unit 24a is provided in particular to prevent the chainsaw 12a from being put into operation as long as the actuating element 22a of the release unit 20a is in a decoupling position.
  • the locking unit 24a is provided to prevent a motor of the chainsaw 12a from starting up during a decoupling operating state of the release unit 20a.
  • the locking unit 24a has at least one operating locking element 32a, which is provided to block an actuation of an operating switch 30a of the chainsaw 12a during a decoupling operating state of the release unit 20a (cf. Figure 6 ).
  • the operating blocking element 32a is provided during a decoupling operating state of the release unit 20a to mechanically block an actuation path of the operating switch 30a.
  • the operating blocking element 32a is provided for during a decoupling operating state of the release unit 20a to block the operating switch 30a of the chainsaw 12a in a rest position.
  • the operating blocking element 32a is connected to the actuating element 22a of the release unit 20a or is at least partially formed in one piece with the actuating element 22a of the release unit 20a.
  • the operating blocking element 32a is provided to follow a movement of the actuating element 22a of the release unit 20a.
  • the operating blocking element 32a is provided to act on the decoupling blocking element 26a and to block a movement of the decoupling blocking element 26a when the actuating element 22a of the release unit 20a is in a decoupling position.
  • the decoupling blocking element 26a is arranged on the transmission element 28a and connected to it, whereby a movement of the transmission element 28a is also blocked by the blockage of the decoupling blocking element 26a.
  • the transmission element 28a is connected to the operating switch 30a of the chainsaw 12a, whereby the movement of the operating switch 30a is also blocked.
  • the chainsaw 12a has at least one kickback protection element 34a.
  • the kickback protection element 34a can be provided to at least largely prevent manual actuation of the actuation element 22a of the release unit 20a during operation of the chainsaw 12a.
  • the kickback protection element 34a is designed as a kickback lever.
  • the kickback protection element 34a is provided to be brought from an operating position into a braking position in the event of a kickback of the chainsaw system 10a by an operation by an operator of the chainsaw system 10a.
  • the kickback protection element 34a can be provided to bring about a braking of the chainsaw 12a, in particular the motor of the chainsaw 12a, in the braking position.
  • the kickback protection element 34a is provided in the operating position to mechanically at least partially and preferably at least largely cover the actuating element 22a of the release unit 20a.
  • the Figures 7 to 9 show different embodiments of a kickback protection element 34a which at least partially and preferably at least largely covers the actuating element 22a of the release unit 20a.
  • Figure 10 a further embodiment of the invention is shown.
  • the following descriptions and the drawings are essentially limited to the differences between the exemplary embodiments, whereby with regard to identically designated components, in particular with regard to components with the same reference numerals, in principle also to the drawings and / or the description of the other exemplary embodiments, in particular the Figures 1 to 9 , can be referenced.
  • the letter a is the reference number of the exemplary embodiment in FIG Figures 1 to 9 re-enacted.
  • the letter a is replaced by the letter b.
  • FIG 10 shows an alternative chain saw system 10b in an unassembled state, in which the saw blade module 14b is decoupled from the chainsaw 12b.
  • the chain saw system 10b has a coupling unit 16b for coupling the saw blade module 14b to the chain saw 12b.
  • the coupling unit 16b is provided to connect the saw blade module 14b by means of a form-fitting and / or force-fitting connection for machining a workpiece with the portable chainsaw 12b.
  • forces and / or torques are transmitted from a gear unit of the chain saw 12b to the saw blade module 14b for driving the cutting strand 18b in an operating state of the chain saw 12b.
  • the chain saw 12b preferably has a torque transmission element 52b which, when the saw blade module 14b is coupled to the chain saw 12b by means of the coupling unit 16b, engages in the cutting strand 18b to drive the cutting strand 18b.
  • the torque transmission element 52b is rotatably mounted on the chainsaw 12b.
  • the torque transmission element 52b can in particular be designed as a toothed shaft 54b of a gear unit of the chainsaw 12b.
  • the chainsaw 12b has at least one receiving recess 48b, which is provided to at least partially receive the saw blade module 14b in an assembled state.
  • the receiving recess 48b has at least one inner contour which at least essentially corresponds to an outer contour of a housing 60b of the saw blade module 14b.
  • the coupling unit 16b has a locking unit 36b and at least one locking element 38b, which is provided to latch within the locking unit 36b.
  • the locking element 38b is located on the chainsaw 12b.
  • the locking unit 36b is arranged on the saw blade module 14b.
  • the locking element 38b has a latching and / or expanding head 78b. When the saw blade module 14b is coupled to the chain saw 12b, the latching and / or expanding head 78b engages in a recess 80b of the locking unit 36b.
  • the coupling unit 16b has at least one positioning bolt 46b, which is provided to align and / or orient the saw blade module 14b relative to the chainsaw 12b.
  • the coupling unit 16b has three positioning bolts 46b, while the chainsaw 12b has a corresponding number of receptacles 58b for the positioning bolts 46b.
  • the positioning bolts 46b engage in the receptacles 58b to position the saw blade module 14b relative to the chainsaw 12b.

Landscapes

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

Claims (10)

  1. Système de scie à chaîne, comprenant une scie à chaîne (12a ; 12b) et un module de lame de scie (14a ; 14b) qui présente une ligne de coupe (18a ; 18b) et au moins une unité de guidage (50a ; 50b) pour le guidage d'au moins une partie de la ligne de coupe (18a ; 18b), comprenant au moins une unité d'accouplement (16a ; 16b) pour accoupler le module de lame de scie (14a ; 14b) à la scie à chaîne (12a ; 12b), la scie à chaîne (12a ; 12b) présentant au moins une unité de séparation (20a ; 20b) dotée d'au moins un élément d'actionnement (22a ; 22b) et qui est prévue pour un désaccouplement sans outil de l'au moins un module de lame de scie (14a ; 14b) accouplé par l'intermédiaire de l'unité d'accouplement (16a ; 16b), la scie à chaîne (12a ; 12b) présentant au moins une unité de blocage (24a ; 24b) qui est prévue au moins pour empêcher un désaccouplement du module de lame de scie (14a ; 14b), accouplé par l'intermédiaire de l'unité d'accouplement (16a ; 16b), au moyen de l'unité de séparation (20a ; 20b) pendant le fonctionnement de la scie à chaîne (12a ; 12b),
    caractérisé en ce que l'unité de blocage (24a ; 24b) présente au moins un élément de blocage de désaccouplement (26a ; 26b) qui est prévu pour bloquer un actionnement de l'élément d'actionnement (22a ; 22b) de l'unité de séparation (20a ; 20b) pendant le fonctionnement de la scie à chaîne (12a ; 12b).
  2. Système de scie à chaîne selon la revendication 1, caractérisé en ce que l'unité de blocage (24a ; 24b) présente au moins un élément de transmission (28a ; 28b) qui accouple un interrupteur de service (30a ; 30b) de la scie à chaîne (12a ; 12b) sur le plan fonctionnel avec l'élément de blocage de désaccouplement (26a ; 26b) et qui est prévu pour transmettre un mouvement de l'interrupteur de service (30a ; 30b) à l'élément de blocage de désaccouplement (26a ; 26b).
  3. Système de scie à chaîne, comprenant une scie à chaîne (12a ; 12b) et un module de lame de scie (14a ; 14b) qui présente une ligne de coupe (18a ; 18b) et au moins une unité de guidage (50a ; 50b) pour le guidage d'au moins une partie de la ligne de coupe (18a ; 18b), comprenant au moins une unité d'accouplement (16a ; 16b) pour accoupler le module de lame de scie (14a ; 14b) à la scie à chaîne (12a ; 12b), la scie à chaîne (12a ; 12b) présentant au moins une unité de séparation (20a ; 20b) dotée d'au moins un élément d'actionnement (22a ; 22b) et qui est prévue pour un désaccouplement sans outil dudit au moins un module de lame de scie (14a ; 14b) accouplé par l'intermédiaire de l'unité d'accouplement (16a ; 16b),
    caractérisé en ce que la scie à chaîne (12a ; 12b) présente au moins une unité de blocage (24a ; 24b) qui est prévue au moins pour empêcher une mise en service de la scie à chaîne (12a ; 12b) pendant un état de fonctionnement de désaccouplement de l'unité de séparation (20a ; 20b).
  4. Système de scie à chaîne selon la revendication 3, caractérisé en ce que l'unité de blocage (24a ; 24b) présente au moins un élément de blocage de fonctionnement (32a ; 32b) qui est prévu pour bloquer un actionnement d'un interrupteur de service (30a ; 30b) de la scie à chaîne (12a ; 12b) pendant un état de fonctionnement de désaccouplement de l'unité de séparation (20a ; 20b).
  5. Système de scie à chaîne, comprenant une scie à chaîne (12a ; 12b) et un module de lame à scie (14a ; 14b) qui présente une ligne de coupe (18a ; 18b) et au moins une unité de guidage (50a ; 50b) pour le guidage d'au moins une partie de la ligne de coupe (18a ; 18b), comprenant au moins une unité d'accouplement (16a ; 16b) pour accoupler le module de lame de scie (14a ; 14b) à la scie à chaîne (12a ; 12b), la scie à chaîne (12a ; 12b) présentant au moins une unité de séparation (20a ; 20b) dotée d'au moins un élément d'actionnement (22a ; 22b) et qui est prévue pour un désaccouplement sans outil de l'au moins un module de lame de scie (14a ; 14b) accouplé par l'intermédiaire de l'unité d'accouplement (16a ; 16b),
    caractérisé en ce que la scie à chaîne (12a ; 12b) présente au moins un élément anti-recul (34a ; 34b) qui est prévu pour empêcher au moins largement un actionnement manuel de l'élément d'actionnement (22a ; 22b) de l'unité de séparation (20a ; 20b) pendant le fonctionnement de la scie à chaîne (12a ; 12b).
  6. Système de scie à chaîne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que l'unité d'accouplement (16a ; 16b) présente une unité de verrouillage (36a ; 36b) et au moins un élément de verrouillage (38a ; 38b) qui est prévu pour s'enclencher à l'intérieur de l'unité de verrouillage (36a ; 36b).
  7. Système de scie à chaîne selon la revendication 6, caractérisé en ce que l'élément de verrouillage (38a) présente au moins une tête de verrouillage (40a), et l'unité de verrouillage (36a) présente au moins un moyen de verrouillage (42a) qui est prévu, au moins dans un état de verrouillage, pour saisir la tête de verrouillage (40a) par l'arrière.
  8. Système de scie à chaîne selon la revendication 6 ou 7,
    caractérisé en ce que l'unité de verrouillage (36a) présente au moins un élément magnétique (44a) qui est prévu pour exercer dans au moins un état de fonctionnement une force de retenue sur l'élément de verrouillage (38a).
  9. Système de scie à chaîne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que l'unité d'accouplement (16a ; 16b) présente au moins une goupille de positionnement (46a ; 46b) qui est prévue pour aligner et/ou orienter le module de lame de scie (14a ; 14b) par rapport à la scie à chaîne (12a ; 12b).
  10. Système de scie à chaîne selon l'une quelconque des revendications précédentes,
    caractérisé en ce que la scie à chaîne (12a ; 12b) présente au moins un évidement de réception (48a ; 48b) qui est prévu pour recevoir au moins partiellement le module de lame à scie (14a ; 14b) dans un état assemblé.
EP18765434.8A 2017-09-25 2018-09-05 Système de scie à chaîne Active EP3687725B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017216870.6A DE102017216870A1 (de) 2017-09-25 2017-09-25 Kettensägensystem
PCT/EP2018/073793 WO2019057487A1 (fr) 2017-09-25 2018-09-05 Système de scie à chaîne

Publications (2)

Publication Number Publication Date
EP3687725A1 EP3687725A1 (fr) 2020-08-05
EP3687725B1 true EP3687725B1 (fr) 2021-08-25

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EP18765434.8A Active EP3687725B1 (fr) 2017-09-25 2018-09-05 Système de scie à chaîne

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US (1) US11192271B2 (fr)
EP (1) EP3687725B1 (fr)
CN (1) CN111148595B (fr)
DE (1) DE102017216870A1 (fr)
WO (1) WO2019057487A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017216870A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Kettensägensystem
DE102019206767A1 (de) * 2019-05-10 2020-11-12 Robert Bosch Gmbh Befestigungsvorrichtung zum Befestigen eines Kettensägenschwerts
AT524949B1 (de) * 2021-04-29 2022-11-15 Blum Gmbh Julius Fräsvorrichtung zum Ausfräsen einer taschenförmigen Ausnehmung in einer Möbelplatte zur Aufnahme eines Möbelbeschlages

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Publication number Priority date Publication date Assignee Title
DE2542775C3 (de) * 1975-09-25 1978-04-27 Kress-Elektrik Gmbh + Co, Elektromotorenfabrik, 7457 Bisingen Handwerkzeugmaschine
DE2806108C2 (de) * 1978-02-14 1983-05-19 Dolmar Maschinen-Fabrik Gmbh & Co, 2000 Hamburg Kupplungseinrichtung für den Anbau und die lösbare Befestigung von Handarbeitsgeräten, wie Sägeeinrichtung u.dgl. an einem Antriebsaggregat
US4316327A (en) * 1979-02-26 1982-02-23 Omark Industries, Inc. Chain saw
US4382334A (en) 1981-07-01 1983-05-10 Omark Industries, Inc. Chain saw device
US4819335A (en) * 1987-09-09 1989-04-11 Pro Power Corporation Detachable blade assembly for a chain saw
US5249362A (en) * 1990-11-13 1993-10-05 Harding Alfred F Quick release device for chain saws
JPH0929667A (ja) * 1995-07-12 1997-02-04 Masahiro Murakawa 着脱式電動機具
US6263979B1 (en) * 1998-07-24 2001-07-24 The Black & Decker Corporation Interchangeable implement system for power tools
DE102004020421B4 (de) * 2004-04-27 2016-01-28 Robert Bosch Gmbh Motorkettensäge mit Rückschlag-Bremse und Auslauf-Bremse
DE102011005016A1 (de) * 2011-03-03 2012-09-06 Robert Bosch Gmbh Werkzeugmaschinentrennvorrichtung
DE102012211102A1 (de) 2012-06-28 2014-01-02 Robert Bosch Gmbh Werkzeugkopplungsvorrichtung
DE102012211094A1 (de) * 2012-06-28 2014-01-02 Robert Bosch Gmbh Werkzeugkopplungsvorrichtung
DE102012211087A1 (de) * 2012-06-28 2014-01-02 Robert Bosch Gmbh Werkzeugmaschinentrennvorrichtung
DE102012215461A1 (de) * 2012-06-28 2014-01-02 Robert Bosch Gmbh Werkzeugmaschinentrennvorrichtung
DE102017216870A1 (de) * 2017-09-25 2019-03-28 Robert Bosch Gmbh Kettensägensystem

Also Published As

Publication number Publication date
CN111148595A (zh) 2020-05-12
US11192271B2 (en) 2021-12-07
CN111148595B (zh) 2023-05-23
DE102017216870A1 (de) 2019-03-28
EP3687725A1 (fr) 2020-08-05
US20210094202A1 (en) 2021-04-01
WO2019057487A1 (fr) 2019-03-28

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