EP1091835B1 - Motor saw - Google Patents

Motor saw Download PDF

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Publication number
EP1091835B1
EP1091835B1 EP99932734A EP99932734A EP1091835B1 EP 1091835 B1 EP1091835 B1 EP 1091835B1 EP 99932734 A EP99932734 A EP 99932734A EP 99932734 A EP99932734 A EP 99932734A EP 1091835 B1 EP1091835 B1 EP 1091835B1
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EP
European Patent Office
Prior art keywords
carbureter
casing
saw according
motor saw
motor
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
EP99932734A
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German (de)
French (fr)
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EP1091835A1 (en
Inventor
Andreas Singer
Jochen SCHÖNHAAR
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Makita Engineering Germany GmbH
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Dolmar GmbH
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Publication of EP1091835A1 publication Critical patent/EP1091835A1/en
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    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B63/00Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
    • F02B63/02Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02BINTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00Other engines
    • F02B75/02Engines characterised by their cycles, e.g. six-stroke
    • F02B2075/022Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
    • F02B2075/025Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two

Definitions

  • the present invention relates to a chain saw with a motor, which is attached to a housing and has an inlet channel, which inlet channel for decoupling vibrations via an elastic Intake hose is connected to a carburetor that is in turn mounted on the housing with the aid of fastening means.
  • Such a chainsaw is e.g. known from the document DE-A1-42 34 483.
  • the carburetor one by an internal combustion engine (usually one high-speed 2-stroke engine) powered chainsaw has an essential Influence on the operating behavior of the device. vibrations that come from the moving piston of the engine and onto the carburetor act, can lead to an irregular fuel supply, which endangers trouble-free engine operation. This is why it is known for engines that are equipped with a carburetor Connect the carburetor to the engine using an elastic intake pipe and in addition an elastic suspension of the carburetor in the housing to accomplish. Such elastic suspensions can by some Types of elastic members, usually rubber, are provided become. Such elements allow efficient vibration isolation to reach the carburetor. However, it is a disadvantage such a suspension that sufficient for vibration isolation allow elastic elements too large movements of the carburetor.
  • An elastic inlet pipe is e.g. from DE-GM 1 762 310 or SE-PS 8 6022 481-7 known.
  • the known articulated connection has several disadvantages: On the one hand, such a connection is comparatively complex and complicated to set up because parts are manufactured with articulated holes and the hinge connections are equipped with corresponding hinge bolts Need to become. On the other hand is the assembly and service-related Disassembly is expensive because the hinge pins in the hinge connections assembled and secured or unlocked and dismantled with a lot of effort Need to become. Finally, the articulated connection allows only a limited one Mobility of the carburetor, namely in the direction transverse to Articulation. An agility towards the articulation on the other hand, can only be realized with a lot of effort if the hinge pins be formed elastically.
  • a first preferred embodiment of the chain saw according to the invention is characterized in that a recording from the housing an elastic material, in particular an elastic sleeve Rubber, is attached, and that the carburetor with a snap-in part in the Recording or elastic sleeve is releasably engaged.
  • the carburetor leaves in this way by simply snapping it into the holder assemble or disassemble by snapping out of the holder.
  • the snap-in part is designed as a spherical head. By doing without the snap-in part can be comparatively small on snap-in edges Resistance engage or unlock.
  • the ball head also works like a ball joint.
  • a pin can also be formed, which is pushed through the sleeve (not shown).
  • the sleeve can be made even more generous (eg air chamber ) in order to achieve a special damper characteristic and at the same time to ensure a "fixed” adjustment (fastening).
  • Another embodiment of the elastic sleeve leaves one essential more elastic design of the damping element. Due to the very elastic The configuration is the assembly process of the damping element not possible together with the intake flange. That's why it will Damping element separated from the intake flange and in the order of assembly be used beforehand. The intake flange is retrofitted engaged.
  • the damping element can by the elipsoid Shape in the direction of the carburetor base reached a very "soft" characteristic become.
  • the spring characteristic turn out harder. This can make the entire intake system soft be stored, but still be kept axially secure.
  • the engine 101 which has a cylinder 10 with a Inlet channel 11 and an outlet channel 12, and a piston 14 comprises, with its crankcase 13 on the bottom 20 of a housing 102 screwed on.
  • the housing 102 at least surrounds the motor 101 partially and is closed at the top by a hood 24.
  • Within the Housing 102 is an adjacent by a vertical partition 23 the engine 101 lying suction space 19 separated by the above a (removable) cover 22 is closed, and in which one Carburetor 16, in particular in the form of a membrane gasifier, housed is.
  • the carburetor 16 is on the output side by an elastic Intake hose 15 connected to the inlet duct 11 of the engine 101.
  • the suction hose 15 passes through an opening in the partition 23 and is snapped there.
  • the carburetor 16 goes in on the input side an intake manifold 17 which bends upward into an air filter 18 flows into.
  • a spherical head 25 is formed on the underside, which engages in an elastic sleeve 21 made of rubber.
  • the elastic In turn, sleeve 21 has lugs or pegs, with which they are in one (or more) opening (s) located in the base 20 are inserted in a snap-in manner or can be inserted.
  • the ball head 25 can of course have a differently shaped nose or a cone Undercut can be used in an appropriately shaped Opening in the elastic sleeve or a comparable elastic Recording can be inserted or pushed through.
  • the ball head 25 has, however the particular advantage that it is particularly easy to insert and also acts as a ball joint.
  • Sleeve (receptacle) 21 mounted in the bottom 20 of the housing 102, then then the intake manifold 17 with the carburetor attached to it 16. Disassembly is carried out in the reverse order. Tool not required for this.
  • FIG. 2 shows a further embodiment of an elastic sleeve 26, with an elastic annular damping body 27 with fastening parts 28, 29 formed thereon for fastening to the housing base 20 and on the intake manifold 17.
  • the damping body 27 is by choosing the diameter of the ring 27a and the cross section body in terms of the desired suspension damping behavior adjustable.
  • the fastening parts 28, 29 can be designed differently.
  • the fastening part 28 has one rod-shaped holding arm 30 with an end stop button 31 while the fastening part 29 has a rod-shaped holding arm 32 with a Has locking connection 33.
  • the locking head 31 is in a corresponding shaped locking receptacle 34 inserted on the intake manifold 17 while the holding arm 32 in a corresponding (not shown) recess is snapped into the housing base 20.
  • FIG 3 shows a further embodiment of a sleeve 26, the Holding arm 34 with the discharge end piece 35 in the housing base 20 is inserted.
  • the invention results in a chain saw with an internal combustion engine, with the simple, inexpensive and easy to assemble and service Way of carburetor largely harmful Vibrations is decoupled.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Vibration Prevention Devices (AREA)
  • Sawing (AREA)
  • Processing Of Stones Or Stones Resemblance Materials (AREA)
  • Harvester Elements (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Description

Technisches GebietTechnical field

Die vorliegende Erfindung betrifft eine Motorsäge mit einem Motor, welcher an einem Gehäuse befestigt ist und einen Einlasskanal aufweist, welcher Einlasskanal zur Entkopplung von Schwingungen über einen elastischen Ansaugschlauch mit einem Vergaser in Verbindung steht, der seinerseits mit Hilfe von Befestigungsmitteln am Gehäuse gelagert ist.The present invention relates to a chain saw with a motor, which is attached to a housing and has an inlet channel, which inlet channel for decoupling vibrations via an elastic Intake hose is connected to a carburetor that is in turn mounted on the housing with the aid of fastening means.

Stand der TechnikState of the art

Eine solche Motorsäge ist z.B. aus der Druckschrift DE-A1-42 34 483 bekannt.Such a chainsaw is e.g. known from the document DE-A1-42 34 483.

Der Vergaser einer durch einen Verbrennungsmotor (in der Regel einen schnelllaufenden 2-Takt-Motor) angetriebenen Motorsäge hat einen wesentlichen Einfluss auf das Betriebsverhalten des Gerätes. Schwingungen, die vom sich bewegenden Kolben des Motors herrühren und auf den Vergaser einwirken, können zu einer unregelmäßigen Kraftstoffzufuhr führen, die einen störungsfreien Motorbetrieb gefährdet. Aus diesem Grunde ist es bei Motoren, die mit einem Vergaser versehen sind, vorbekannt, den Vergaser mit dem Motor mittels eines elastischen Einlaßrohres zu verbinden und zusätzlich eine elastische Aufhängung des Vergasers in dem Gehäuse zu schaffen. Solche elastischen Aufhängungen können durch einige Typen von elastischen Elementen, normalerweise aus Gummi, bereitgestellt werden. Durch solche Elemente ist es möglich, eine effiziente Vibrationsisolierung des Vergasers zu erreichen. Es ist jedoch ein Nachteil einer solchen Aufhängung, dass für die Vibrationsisolierung ausreichend elastische Elemente zu große Bewegungen des Vergasers ermöglichen. Ein elastisches Einlaßrohr ist z.B. aus der DE-GM 1 762 310 oder der SE-PS 8 6022 481-7 bekannt. The carburetor one by an internal combustion engine (usually one high-speed 2-stroke engine) powered chainsaw has an essential Influence on the operating behavior of the device. vibrations that come from the moving piston of the engine and onto the carburetor act, can lead to an irregular fuel supply, which endangers trouble-free engine operation. This is why it is known for engines that are equipped with a carburetor Connect the carburetor to the engine using an elastic intake pipe and in addition an elastic suspension of the carburetor in the housing to accomplish. Such elastic suspensions can by some Types of elastic members, usually rubber, are provided become. Such elements allow efficient vibration isolation to reach the carburetor. However, it is a disadvantage such a suspension that sufficient for vibration isolation allow elastic elements too large movements of the carburetor. An elastic inlet pipe is e.g. from DE-GM 1 762 310 or SE-PS 8 6022 481-7 known.

Aufgrund ständig steigender Anforderungen hinsichtlich der Reduzierung der Abgasemissionen ist ein sicherer Motorbetrieb erforderlich. Eine genaue Einstellung des Vergasers ist dabei zur Gewährleistung niedriger Abgasemissionen Voraussetzung. Eine schwingungsreduzierte Befestigung des Vergasers im Ansaugraum wäre daher sehr von Vorteil. Desweiteren sollte die Befestigung des Vergasers einfach, servicefreundlich sowie kostengünstig ausgeführt sein.Due to constantly increasing requirements regarding the reduction Exhaust emissions require safe engine operation. An exact Carburetor setting is lower to ensure this Exhaust emissions requirement. A vibration-reduced attachment of the carburetor in the intake chamber would therefore be very advantageous. Furthermore the carburetor attachment should be simple, easy to service as well as being inexpensive.

Aus der eingangs genannten Druckschrift DE-A1 42 34 483 ist es nun bekannt, den Vergaser schwingungsmäßig durch ein Gaseinlassrohr aus einem Elastomer vom Einlasskanal des Motors zu entkoppeln. Damit sich der Vergaser sich in Richtung des Gaseinlassrohres relativ frei bewegen kann, ist er über eine Gelenkverbindung mit dem Bedienungsbereich der Säge gelenkig verbunden.From the publication DE-A1 42 34 483 mentioned at the outset, it is now known the carburetor out through a gas inlet pipe an elastomer from the engine intake port. So yourself the carburetor move relatively freely in the direction of the gas inlet pipe can, it is connected to the operating area of the Saw hinged.

Die bekannte gelenkige Verbindung hat jedoch verschiedene Nachteile: Zum einen ist eine solche Verbindung vergleichsweise aufwendig und kompliziert im Aufbau, weil Teile mit Gelenkbohrungen hergestellt werden und die Gelenkverbindungen mit entsprechenden Gelenkbolzen ausgestattet werden müssen. Zum anderen ist die Montage und servicemäßige Demontage aufwendig, weil die Gelenkbolzen in den Gelenkverbindungen mit viel Aufwand montiert und gesichert bzw. entsichert und demontiert werden müssen. Schliesslich erlaubt die Gelenkverbindung nur eine beschränkte Beweglichkeit des Vergasers, nämlich in der Richtung quer zur Gelenkverbindung. Eine Beweglichkeit in Richtung der Gelenkverbindung dagegen kann nur mit viel Aufwand realisiert werden, wenn die Gelenkstifte elastisch ausgebildet werden.However, the known articulated connection has several disadvantages: On the one hand, such a connection is comparatively complex and complicated to set up because parts are manufactured with articulated holes and the hinge connections are equipped with corresponding hinge bolts Need to become. On the other hand is the assembly and service-related Disassembly is expensive because the hinge pins in the hinge connections assembled and secured or unlocked and dismantled with a lot of effort Need to become. Finally, the articulated connection allows only a limited one Mobility of the carburetor, namely in the direction transverse to Articulation. An agility towards the articulation on the other hand, can only be realized with a lot of effort if the hinge pins be formed elastically.

Es ist daher auch mit der DE 197 53 689 A1 bereits eine Aufhängung für einen Vergaser vorgeschlagen worden, die mindestens ein elastisches Element umfasst, das am Gehäuse befestigt und mit dem Vergaser verbunden ist, um ein gewisses Ausmaß an Bewegung des Vergasers relativ zum Gehäuse zu ermöglichen, wobei eine Stützeinrichtung das Ausmaß der Bewegung begrenzt. Dies ist jedoch mit Nachteilen verbunden, da durch die Begrenzung und die damit verbundene direkte Stützung des Vergasers Vibrationen immer noch in einem nicht zu tolerierendem Umfang übertragen werden.It is therefore already a suspension for with DE 197 53 689 A1 a carburetor has been proposed that has at least one elastic Includes element attached to the housing and connected to the carburetor is relative to a certain amount of movement of the carburetor to enable the housing, a support means the extent limited movement. However, this is associated with disadvantages by limiting and directly supporting the Carburetor vibrations still to an intolerable extent be transmitted.

Darstellung der Erfindung, Aufgabe, Lösung, VorteilePresentation of the invention, task, solution, advantages

Es ist daher Aufgabe der Erfindung, eine Motorsäge zu schaffen, welche die Nachteile der bisherigen Lösung vermeidet und insbesondere eine einfache, servicefreundliche und kostengünstig zu realisierende vibrationsarme Lagerung des Vergasers ermöglicht.It is therefore an object of the invention to provide a chain saw which avoids the disadvantages of the previous solution and in particular one simple, service-friendly and inexpensive to implement low-vibration Storage of the carburetor enables.

Diese Aufgabe wird bei einer Motorsäge der eingangs genannten Art durch die in Anspruch 1 angegebenen Merkmale gelöst. Durch den erfindungsgemässen Verzicht auf eine gelenkige Befestigung des Vergasers am Gehäuse mittels Gelenkbolzen und dgl. und auf jegliche Stütz- und Begrenzungseinrichtung wird die Lagerung stark vereinfacht. Zugleich wird durch die elastisch angelenkte Einpunktaufhängung eine Lagerung erreicht, die den Vergaser zwar räumlich fixiert, ihm gleichzeitig aber durch die elastische Beweglichkeit in verschiedenen Raumrichtungen schwingungsmäßig vom Motor und Gehäuse wirksam entkoppelt. Durch den Verzicht auf Stützwände und Anschläge wird eine wirksame Dämpfungseinrichtung geschaffen. Durch die bevorzugterweise progressive Kennlinie der Federkonstanten des elastischen Elementes wird erreicht, dass sowohl höher frequente Schwingungen als auch Schwingungen mit niedriger Frequenz wirksam gedämpft werden.This task is carried out in a chain saw of the type mentioned solved by the features specified in claim 1. By the inventive There is no articulated fastening of the carburetor on the housing by means of hinge bolts and the like. And on any support and Limiting device simplifies storage. at the same time becomes a storage due to the elastically articulated single-point suspension achieved that fixes the carburetor spatially, but at the same time through it the elastic mobility in different spatial directions in terms of vibrations effectively decoupled from the motor and housing. By the Dispensing with retaining walls and stops becomes an effective damping device created. Due to the preferably progressive characteristic the spring constant of the elastic element is achieved that both higher frequency vibrations as well as vibrations with lower Frequency can be effectively attenuated.

Durch die zentrale Anordnung des Dämpfungsteiles und die gewählte Einpunktbefestigung wird eine Dämpfung in allen Ebenen, d.h., in alle Richtungen erreicht. Due to the central arrangement of the damping part and the selected single-point fastening there is damping in all levels, i.e. in all directions reached.

Eine erste bevorzugte Ausführungsform der erfindungsgemässen Motorsäge ist dadurch gekennzeichnet, dass am Gehäuse eine Aufnahme aus einem elastischen Material, insbesondere eine elastische Muffe aus Gummi, befestigt ist, und dass der Vergaser mit einem Einrastteil in die Aufnahme bzw. elastische Muffe lösbar eingerastet ist. Der Vergaser lässt sich auf diese Weise besonders einfach durch Einrasten in die Aufnahme montieren bzw. durch Ausrasten aus der Aufnahme demontieren.A first preferred embodiment of the chain saw according to the invention is characterized in that a recording from the housing an elastic material, in particular an elastic sleeve Rubber, is attached, and that the carburetor with a snap-in part in the Recording or elastic sleeve is releasably engaged. The carburetor leaves in this way by simply snapping it into the holder assemble or disassemble by snapping out of the holder.

Ein besonders einfacher Rastvorgang und eine sehr bewegliche Lagerung ergeben sich, wenn gemäß einer bevorzugten Weiterbildung der Ausführungsform das Einrastteil als Kugelkopf ausgebildet ist. Durch den Verzicht auf Einrastkanten lässt sich des Einrastteil mit vergleichsweise geringem Widerstand Einrasten bzw. Entrasten. Der Kugelkopf wirkt zusätzlich wie ein Kugelgelenk.A particularly simple latching process and very flexible storage arise if according to a preferred development of the embodiment the snap-in part is designed as a spherical head. By doing without the snap-in part can be comparatively small on snap-in edges Resistance engage or unlock. The ball head also works like a ball joint.

Anstelle des Kugelkopfes kann auch ein Zapfen ausgebildet sein, der durch die Muffe durchgesteckt wird (nicht dargestellt). So kann die Muffe noch grosszügiger ausgebildet sein (z. Bsp. Luftkammer), um eine spezielle Dämpfercharakteristik zu erreichen und gleichzeitig eine "feste" Justierung (Befestigung) zu gewährleisten.Instead of the ball head, a pin can also be formed, which is pushed through the sleeve (not shown). The sleeve can be made even more generous ( eg air chamber ) in order to achieve a special damper characteristic and at the same time to ensure a "fixed" adjustment (fastening).

Eine weitere Ausführungsform der elastischen Muffe lässt eine wesentlich elastischere Gestaltung des Dämpfungselementes zu. Durch die sehr elastische Ausgestaltung ist der Montagevorgang des Dämpfungselementes nicht zusammen mit dem Ansaugflansch möglich. Deshalb wird das Dämpfungselement vom Ansaugflansch getrennt und in der Montagereihenfolge vorher eingesetzt werden. Der Ansaugflansch wird nachträglich eingerastet.Another embodiment of the elastic sleeve leaves one essential more elastic design of the damping element. Due to the very elastic The configuration is the assembly process of the damping element not possible together with the intake flange. That's why it will Damping element separated from the intake flange and in the order of assembly be used beforehand. The intake flange is retrofitted engaged.

Zur Ausgestaltung des Dämpfungselementes kann durch die elipsoide Form in Richtung Vergaserboden eine sehr "weiche" Kennlinie erreicht werden. In Kurbelwellenachse gesehen dagegen wird die Federkennlinie härter ausfallen. Dadurch kann das gesamte Ansaugsystem zwar weich gelagert werden, aber trotzdem axial sicher gehalten werden.To design the damping element can by the elipsoid Shape in the direction of the carburetor base reached a very "soft" characteristic become. In contrast, seen in the crankshaft axis is the spring characteristic turn out harder. This can make the entire intake system soft be stored, but still be kept axially secure.

Weitere Ausführungsformen ergeben sich aus den abhängigen Ansprüchen.Further embodiments result from the dependent claims.

Kurze Beschreibung der ZeichnungenBrief description of the drawings

Ausführungsbeispiele der Erfindung werden nachstehend anhand der Zeichnungen näher erläutert es zeigen

Fig. 1
in einer Schnittansicht einen Teil eines bevorzugten Ausführungsbeispiels einer Motorsäge nach der Erfindung mit dem Motor und dem damit verbundenen Vergaser, der über einen am Ansaugkrümmer angeformten Kugelkopf in einer elastischen Aufnahme im Gehäuseboden elastisch gelagert ist,
Fig. 2.
in einer schaubildlichen Ansicht eine elastische Muffe, und
Fig. 3.
in einer schaubildlichen Ansicht eine weitere Ausführungsform einer elastischen Muffe in der im Ansaugkrümmer eingerasteten Einbausituation.
Embodiments of the invention are explained below with reference to the drawings, it show
Fig. 1
in a sectional view a part of a preferred embodiment of a chain saw according to the invention with the engine and the carburetor connected thereto, which is elastically mounted in an elastic receptacle in the housing base via a spherical head formed on the intake manifold,
Fig. 2.
in a diagrammatic view an elastic sleeve, and
Fig. 3.
in a diagrammatic view, a further embodiment of an elastic sleeve in the installation situation snapped into the intake manifold.

Bester Weg zur Ausführung der ErfindungBest way to carry out the invention

In der Fig. 1 ist in einer geschnittenen Teilansicht der Motor 101 einer Motorsäge 100 wiedergegeben. Der Motor 101, der einen Zylinder 10 mit einem Einlasskanal 11 und einem Auslasskanal 12, sowie einem Kolben 14 umfasst, ist mit seinem Kurbelgehäuse 13 am Boden 20 eines Gehäuses 102 angeschraubt. Das Gehäuse 102 umgibt den Motor 101 zumindest teilweise und ist oben durch eine Haube 24 abgeschlossen. Innerhalb des Gehäuses 102 ist durch eine senkrecht stehende Trennwand 23 ein neben dem Motor 101 liegender Ansaugraum 19 abgetrennt, der oben durch einen (abnehmbaren) Deckel 22 geschlossen wird, und in welchem ein Vergaser 16, insbesondere in Form eines Membranvergasers, untergebracht ist. Der Vergaser 16 ist ausgangsseitig durch einen elastischen Ansaugschlauch 15 an den Einlasskanal 11 des Motors 101 angeschlossen. Der Ansaugschlauch 15 geht durch eine Oeffnung in der Trennwand 23 und ist dort einrastend gelagert. Eingangsseitig geht der Vergaser 16 in einen Ansaugkrümmer 17 über, der nach oben abbiegend in einen Luftfilter 18 einmündet.1 is a sectional partial view of the motor 101 of a chain saw 100 reproduced. The engine 101, which has a cylinder 10 with a Inlet channel 11 and an outlet channel 12, and a piston 14 comprises, with its crankcase 13 on the bottom 20 of a housing 102 screwed on. The housing 102 at least surrounds the motor 101 partially and is closed at the top by a hood 24. Within the Housing 102 is an adjacent by a vertical partition 23 the engine 101 lying suction space 19 separated by the above a (removable) cover 22 is closed, and in which one Carburetor 16, in particular in the form of a membrane gasifier, housed is. The carburetor 16 is on the output side by an elastic Intake hose 15 connected to the inlet duct 11 of the engine 101. The suction hose 15 passes through an opening in the partition 23 and is snapped there. The carburetor 16 goes in on the input side an intake manifold 17 which bends upward into an air filter 18 flows into.

Am Ansaugkrümmer 17 ist auf der Unterseite ein Kugelkopf 25 angeformt, der in eine elastische Muffe 21 aus Gummi einrastend eingreift. Die elastische Muffe 21 besitzt ihrerseits Nasen oder Zapfen, mit welchen sie in eine (oder mehrere) im Boden 20 befindliche Oeffnung(en) einrastbar eingesteckt bzw. durchgesteckt werden kann. Anstelle des Kugelkopfes 25 kann selbstverständlich eine anders geformte Nase oder ein Zapfen mit Hinterschnitt verwendet werden, die in eine entsprechend geformte Oeffnung in der elastischen Muffe oder einer vergleichbaren elastischen Aufnahme einsteckbar bzw. durchsteckbar sind. Der Kugelkopf 25 hat jedoch den besonderen Vorteil, dass er besonders leicht einsteckbar ist und zugleich als Kugelgelenk wirkt.On the intake manifold 17, a spherical head 25 is formed on the underside, which engages in an elastic sleeve 21 made of rubber. The elastic In turn, sleeve 21 has lugs or pegs, with which they are in one (or more) opening (s) located in the base 20 are inserted in a snap-in manner or can be inserted. Instead of the ball head 25 can of course have a differently shaped nose or a cone Undercut can be used in an appropriately shaped Opening in the elastic sleeve or a comparable elastic Recording can be inserted or pushed through. The ball head 25 has, however the particular advantage that it is particularly easy to insert and also acts as a ball joint.

Aufgrund der elastischen Ausführung der Muffe 21 bzw. Aufnahme kann die Übertragung von Schwingungen auf den Vergaser 16 massgeblich reduziert werden. Gleichzeitig wird der Vergaser 16, welcher (zur weiteren Vermeidung von Wärmeübertragung und Schwingungen) über den elastischen Ansaugschlauch 15 mit dem Zylinder 10 verbunden ist, in allen erforderlichen Richtungen fixiert. Due to the elastic design of the sleeve 21 or receptacle the transmission of vibrations to the carburetor 16 significantly be reduced. At the same time, the carburetor 16, which (for further Avoidance of heat transfer and vibrations) via the elastic Intake hose 15 is connected to the cylinder 10 in all required Directions fixed.

Durch das einfache Einschnappen des Kugelkopfes 25 in die dafür vorgesehene Oeffnung in der elastischen Muffe 21 werden Montage und Demontage stark vereinfacht: Bei der Montage wird zunächst die elastischeBy simply snapping the ball head 25 into the intended one Opening in the elastic sleeve 21 are assembly and disassembly greatly simplified: During assembly, the elastic is first

Muffe (Aufnahme) 21 im Boden 20 des Gehäuses 102 montiert, anschliessend dann der Ansaugkrümmer 17 mit dem daran hängenden Vergaser 16. Die Demontage erfolgt in umgekehrter Reihenfolge. Werkzeug wird hierfür nicht benötigt.Sleeve (receptacle) 21 mounted in the bottom 20 of the housing 102, then then the intake manifold 17 with the carburetor attached to it 16. Disassembly is carried out in the reverse order. Tool not required for this.

In Fig. 2 ist eine weitere Ausführungsform einer elastischen Muffe 26 dargestellt, die aus einem elastischen ringförmigen Dämpfungskörper 27 mit daran angeformten Befestigungsteilen 28, 29 zur Befestigung am Gehäuseboden 20 und am Ansaugkrümmer 17 besteht. Der Dämpfungskörper 27 ist dabei durch Wahl des Durchmessers des Rings 27a und des Querschnitts des Körpers optimal hinsichtlich des gewünschten Federungs-Dämpfungsverhaltens einstellbar. Die Befestigungsteile 28, 29 können dabei unterschiedlich gestaltet sein. Das Befestigungsteil 28 weist einen stabförmigen Haltearm 30 mit einem endseitigen Rastknopf 31 auf, während das Befestigungsteil 29 einen stabförmigen Haltearm 32 mit einer Rastverbindung 33 aufweist. Der Rastkopf 31 wird in eine entsprechend geformte Rastaufnahme 34 am Ansaugkrümmer 17 eingeschoben, während der Haltearm 32 in eine entsprechende (nicht dargestellte) Ausnehmung im Gehäuseboden 20 eingerastet wird.2 shows a further embodiment of an elastic sleeve 26, with an elastic annular damping body 27 with fastening parts 28, 29 formed thereon for fastening to the housing base 20 and on the intake manifold 17. The damping body 27 is by choosing the diameter of the ring 27a and the cross section body in terms of the desired suspension damping behavior adjustable. The fastening parts 28, 29 can be designed differently. The fastening part 28 has one rod-shaped holding arm 30 with an end stop button 31 while the fastening part 29 has a rod-shaped holding arm 32 with a Has locking connection 33. The locking head 31 is in a corresponding shaped locking receptacle 34 inserted on the intake manifold 17 while the holding arm 32 in a corresponding (not shown) recess is snapped into the housing base 20.

In Fig. 3 ist eine weitere Ausführungsform einer Muffe 26 dargestellt, deren Haltearm 34 mit dem austragenden Endstück 35 in den Gehäuseboden 20 hineingesteckt wird.3 shows a further embodiment of a sleeve 26, the Holding arm 34 with the discharge end piece 35 in the housing base 20 is inserted.

Insgesamt ergibt sich mit der Erfindung eine Motorsäge mit Verbrennungsmotor, bei der auf einfache, kostengünstige und montage- und servicefreundliche Art und Weise der Vergaser weitgehend von schädlichen Schwingungen entkoppelt ist. Overall, the invention results in a chain saw with an internal combustion engine, with the simple, inexpensive and easy to assemble and service Way of carburetor largely harmful Vibrations is decoupled.

BEZUGSZEICHENLISTELIST OF REFERENCE NUMBERS

100100
Motorsägechainsaw
101101
Motorengine
102102
Gehäusecasing
1010
Zylindercylinder
1111
Einlasskanalinlet channel
1212
Auslasskanalexhaust port
1313
Kurbelgehäusecrankcase
1414
Kolbenpiston
1515
AnsaugschlauchSuction
1616
Vergaser (Membranvergaser)Carburettor (membrane carburettor)
1717
Ansaugkrümmerintake manifold
1818
Luftfilterair filter
1919
Ansaugraumsuction
2020
Boden (Gehäuse)Bottom (housing)
2121
elastische Muffeelastic sleeve
2222
Deckel (Gehäuse)Cover (housing)
2323
Trennwand (Gehäuse)Partition (housing)
2424
Haube (Gehäuse)Hood (housing)
2525
Kugelkopfball head
2626
Muffesleeve
2727
Dämpfungskörperdamping body
28,2928.29
BefestigungsteileFasteners
30, 3230, 32
Haltearmholding arm
3131
Rastknopfcatch button
3333
Rastverbindunglocking connection
3434
Rastaufnahmelatching receptacle
3535
Endstücktail

Claims (11)

  1. A motor saw (100) with a motor (101) which is fixed to a casing (102) and which shows an intake port (11) which is connected with a carbureter (16) over a resilient suction hose (15) for decoupling oscillations, the carbureter itself being supported on the casing (102) by means of fixing means (21, 25),
    characterized in that the bearing of the carbureter (16) on the casing (102) is carried out substantially resiliently for damping or reducing the oscillations and the bearing of the resiliently hinged carbureter (16) is carried out by means of an one-point suspension.
  2. A motor saw according to claim 1,
    characterized in that a seat made of an elastic material, especially a resilient bushing (21) made of rubber, is fixed on the casing (102) and that the carbureter (16) is detachably snapped-in with a snap-in part (25) into the seat or the resilient bushing (21).
  3. A motor saw according to claim 1 or 2,
    characterized in that the spring characteristic of the damping element is configured progressive.
  4. A motor saw according to any of the claims 1 to 3,
    characterized in that the snap-in part is configured as a ball head (25).
  5. A motor saw according to one of the claims 3 and 4,
    characterized in that the casing (102) comprises a bottom (20) and that the seat or the resilient bushing (21) is snapped-in into an opening in the bottom (20) provided for this purpose.
  6. A motor saw according to claim 5,
    characterized in that the casing (102) shows a partition wall (23) placed substantially vertically to the bottom (20) between the motor (101) and the carbureter (16) and that the resilient suction hose (15) penetrates through an opening in the partition wall (23) and is supported in snap-in position in this opening.
  7. A motor saw according to any of the claims 3 to 6,
    characterized in that the carbureter (16) is fixedly connected with an intake manifold (17) and that the snap-in part or the ball head (25) is moulded on the intake manifold (17).
  8. A motor saw according to claim 1,
    characterized in that a bearing means shows a first fixing part (28) for the removable fixing to the carbureter (16) and a second fixing part (29) for the removable fixing to the casing (102) and a resilient connecting part (27) between the first fixing part (28) and the second fixing part (29).
  9. A motor saw according to claim 7 or 8,
    characterized in that the resilient connecting part (27) is configured ring-shaped.
  10. A motor saw according to claim 7 or 8,
    characterized in that the first and/or second fixing part is configured T-shaped and can be pushed-in into an inverted T-shaped receiving groove or recess on the casing and/or carbureter.
  11. A motor saw according to any of the claims 7 to 9,
    characterized in that the first and/or second fixing part shows, especially end-sided, a snap-in head for snapping-in into a snap-in head seat on the casing and/or carbureter.
EP99932734A 1998-06-29 1999-06-25 Motor saw Expired - Lifetime EP1091835B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE19828727 1998-06-29
DE19828727A DE19828727A1 (en) 1998-06-29 1998-06-29 Motorized chain saw
PCT/EP1999/004434 WO2000000330A1 (en) 1998-06-29 1999-06-25 Motor saw

Publications (2)

Publication Number Publication Date
EP1091835A1 EP1091835A1 (en) 2001-04-18
EP1091835B1 true EP1091835B1 (en) 2003-11-05

Family

ID=7872229

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99932734A Expired - Lifetime EP1091835B1 (en) 1998-06-29 1999-06-25 Motor saw

Country Status (4)

Country Link
US (1) US6334421B1 (en)
EP (1) EP1091835B1 (en)
DE (3) DE19828727A1 (en)
WO (1) WO2000000330A1 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6379866B2 (en) 2000-03-31 2002-04-30 Dsm Desotech Inc Solid imaging compositions for preparing polypropylene-like articles
WO2000077385A1 (en) * 1999-06-10 2000-12-21 Dolmar Gmbh Motor saw
JP2002235617A (en) * 2001-02-08 2002-08-23 Denso Corp Intake device
GB0106506D0 (en) * 2001-03-16 2001-05-02 Perkins Engines Co Ltd A cylinder block apron
US8516989B2 (en) * 2003-09-02 2013-08-27 Andreas Stihl Ag & Co. Kg Internal combustion engine having an elastic connecting duct
DE20313567U1 (en) * 2003-09-02 2003-10-30 Andreas Stihl AG & Co. KG, 71336 Waiblingen Elastic connector
US20050217625A1 (en) * 2004-04-05 2005-10-06 Advanced Flow Engineering, Inc. Heat shielded air intake system
DE202009013953U1 (en) 2009-10-14 2011-03-03 Makita Corp., Anjo Engine with an improved arrangement of the carburetor unit
CN103302630A (en) * 2013-06-17 2013-09-18 宋洪庆 Dismounting and mounting tool for drag link ball head of automobile steering engine

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7304706U (en) 1973-11-15 Rauh A Portable motor saw
JPH0439404Y2 (en) * 1986-09-11 1992-09-16
DE1762310U (en) * 1957-12-23 1958-02-27 Heinkel Ag Ernst ELASTIC SUCTION PIPE.
US3542095A (en) * 1968-08-05 1970-11-24 Mcculloch Corp Chain saw with vibration isolation system
US3782343A (en) * 1972-08-07 1974-01-01 A Notaras Carburetor mounting
DE2802896C2 (en) 1978-01-24 1982-09-23 Audi Nsu Auto Union Ag, 7107 Neckarsulm Rubber mounts with hydraulic damping
JPH051639Y2 (en) * 1986-12-17 1993-01-18
JPH074885Y2 (en) 1989-04-15 1995-02-08 株式会社共立 Chainsaw
DE3927218C2 (en) 1989-08-17 1995-03-23 Bayerische Motoren Werke Ag Storage of at least one fuel pump arranged in a fuel tank of a vehicle
JP2538321Y2 (en) * 1991-01-23 1997-06-11 株式会社共立 Chainsaw
SE501998C2 (en) * 1991-10-14 1995-07-10 Electrolux Ab Heat and vibration dampening device at a carburetor
SE9303470L (en) * 1993-10-21 1995-04-22 Electrolux Ab Intake pipe for an internal combustion engine
SE510469C2 (en) * 1996-12-05 1999-05-25 Electrolux Ab Apparatus for hanging a member, such as a carburetor for an internal combustion engine

Also Published As

Publication number Publication date
DE19828727A1 (en) 1999-12-30
US6334421B1 (en) 2002-01-01
DE29910005U1 (en) 1999-11-11
DE59907640D1 (en) 2003-12-11
EP1091835A1 (en) 2001-04-18
WO2000000330A1 (en) 2000-01-06
WO2000000330A9 (en) 2000-05-11

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