WO2000000330A1 - Motorsäge - Google Patents
Motorsäge Download PDFInfo
- Publication number
- WO2000000330A1 WO2000000330A1 PCT/EP1999/004434 EP9904434W WO0000330A1 WO 2000000330 A1 WO2000000330 A1 WO 2000000330A1 EP 9904434 W EP9904434 W EP 9904434W WO 0000330 A1 WO0000330 A1 WO 0000330A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- carburetor
- housing
- elastic
- chain saw
- saw according
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B63/00—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices
- F02B63/02—Adaptations of engines for driving pumps, hand-held tools or electric generators; Portable combinations of engines with engine-driven devices for hand-held tools
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines 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 fastened to a housing and has an inlet duct, which inlet duct is connected via a flexible suction hose to a carburetor for decoupling vibrations, which in turn is 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 of a chainsaw driven by an internal combustion engine (usually a high-speed 2-stroke engine) has a significant influence on the operating behavior of the device. Vibrations that come from the moving piston of the engine and act on the carburetor can lead to an irregular fuel supply, which jeopardizes trouble-free engine operation. For this reason, it is previously known in engines which are provided with a carburetor to connect the carburetor to the engine by means of an elastic inlet pipe and, in addition, to provide an elastic suspension of the carburetor in the housing.
- Such elastic suspensions can be provided by some types of elastic elements, usually rubber. Such elements make it possible to achieve efficient vibration isolation of the carburetor.
- the known articulated connection has various disadvantages: On the one hand, such a connection is comparatively complex and complicated in construction because parts are produced with articulated bores and the articulated connections have to be equipped with corresponding articulated bolts. On the other hand, the assembly and service-related disassembly is complex because the Geiekbolzen in the joint connections have to be assembled and secured with a lot of effort or unlocked and disassembled. Finally, the articulated connection allows only limited mobility of the carburetor, namely in the direction transverse to the articulated connection. Movement in the direction of the articulated connection, on the other hand, can only be achieved with great effort if the articulation pins are designed to be elastic.
- the storage is greatly simplified by dispensing with an articulated fastening of the carburetor to the housing by means of articulated bolts and the like, and without any supporting and limiting device.
- the elastically articulated single-point suspension ensures that the carburetor is spatially fixed, but at the same time it is effectively decoupled from the engine and the housing due to the elastic mobility in different spatial directions.
- an effective damping device is created.
- the preferably progressive characteristic of the spring constants of the elastic element ensures that both higher-frequency vibrations and vibrations with a lower frequency are effectively damped.
- a first preferred embodiment of the chain saw according to the invention is characterized in that a receptacle made of an elastic material, in particular an elastic sleeve made of rubber, is fastened to the housing and that the carburetor is detachably latched into the receptacle or elastic sleeve with a snap-in part.
- the carburetor can be assembled particularly easily by snapping it into the receptacle or disassembling it from the receptacle.
- the latching part is designed as a spherical head. By dispensing with latching edges, the latching part can be latched or unlatched with comparatively little resistance.
- the ball head also acts 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 allows a much more elastic design of the damping element. Due to the very elastic design, the assembly process of the damping element is not possible together with the intake flange. For this reason, the damping element is separated from the intake flange and used beforehand in the assembly sequence. The intake flange is snapped into place.
- a very "soft" characteristic curve can be achieved for the design of the damping element due to the egg-shaped shape in the direction of the carburetor base.
- the spring characteristic curve is seen in the crankshaft axis b
- the entire intake system can be stored softly, but can still be held axially securely.
- FIG. 1 is a sectional view of part of a preferred embodiment of a chain saw according to the invention with the engine and the carburetor connected to it, which is elastically mounted in an elastic receptacle in the housing base via a spherical head formed on the intake manifold,
- FIG. 3 In a diagrammatic view, a further embodiment of an elastic sleeve in the installation situation snapped into the intake manifold.
- Fig. 1 the motor 101 of a chainsaw 100 is shown in a sectional partial view.
- the engine 101 which comprises a cylinder 10 with an inlet channel 11 and an outlet channel 12, as well as a piston 14, is screwed with its crankcase 13 to the bottom 20 of a housing 102.
- the housing 102 at least partially surrounds the motor 101 and is closed off at the top by a hood 24.
- Inside the housing 102 is a vertical partition 23 separated from the engine 101 lying suction space 19, which is closed at the top by a (removable) cover 22, and in which a carburetor 16, in particular in the form of a membrane carburetor, is underneath
- the carburetor 16 On the output side, the carburetor 16 is connected to the inlet duct 11 of the engine 101 through an elastic suction hose 15. The suction hose 15 passes through an opening in the partition 23 and is latched there. On the input side, the carburetor 16 merges into an intake manifold 17, which opens into an air filter 18 and bends upwards.
- a ball head 25 is integrally formed on the underside, which engages in an elastic sleeve 21 made of rubber.
- the elastic sleeve 21 in turn has lugs or pegs with which it can be inserted or pushed through into one (or more) opening (s) located in the base 20.
- a differently shaped nose or a pin with an undercut can be used, which can be inserted or pushed through a correspondingly shaped opening in the elastic sleeve or a comparable elastic receptacle.
- the ball head 25 has the particular advantage that it is particularly easy to insert and at the same time acts as a ball joint.
- the transmission of vibrations to the carburetor 16 can be significantly reduced.
- the carburetor 16 which (for further avoidance of heat transfer and vibrations) is connected to the cylinder 10 via the elastic suction hose 15, is fixed in all required directions.
- the sleeve (receptacle) 21 is mounted in the base 20 of the housing 102, then the intake manifold 17 with the carburetor 16 attached to it.
- the disassembly is carried out in the reverse order. No tools are required for this.
- an elastic sleeve 26 which consists of an elastic, ring-shaped damping body 27 with fastening parts 28, 29 formed thereon for fastening to the housing base 20 and to the intake manifold 17.
- the damping body 27 can be optimally adjusted with regard to the desired suspension damping behavior by choosing the diameter of the ring 27a and the cross section of the body.
- the fastening parts 28, 29 can be designed differently.
- the fastening part 28 has a rod-shaped holding arm 30 with an end locking button 31, while the fastening part 29 has a rod-shaped holding arm 32 with a locking connection 33.
- the locking head 31 is inserted into a correspondingly shaped locking receptacle 34 on the intake manifold 17, while the holding arm 32 is locked into a corresponding recess (not shown) in the housing base 20.
- FIG. 3 shows a further embodiment of a sleeve 26, the holding arm 34 of which is inserted with the discharge end piece 35 into the housing base 20.
- the invention results in a chain saw with an internal combustion engine, in which the carburetor is largely decoupled from harmful vibrations in a simple, inexpensive and assembly- and service-friendly manner.
Landscapes
- 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)
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US09/674,676 US6334421B1 (en) | 1998-06-29 | 1999-06-25 | Motor saw |
DE59907640T DE59907640D1 (de) | 1998-06-29 | 1999-06-25 | Motorsäge |
EP99932734A EP1091835B1 (de) | 1998-06-29 | 1999-06-25 | Motorsäge |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19828727A DE19828727A1 (de) | 1998-06-29 | 1998-06-29 | Motorsäge |
DE19828727.5 | 1998-06-29 |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2000000330A1 true WO2000000330A1 (de) | 2000-01-06 |
WO2000000330A9 WO2000000330A9 (de) | 2000-05-11 |
Family
ID=7872229
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1999/004434 WO2000000330A1 (de) | 1998-06-29 | 1999-06-25 | Motorsäge |
Country Status (4)
Country | Link |
---|---|
US (1) | US6334421B1 (de) |
EP (1) | EP1091835B1 (de) |
DE (3) | DE19828727A1 (de) |
WO (1) | WO2000000330A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6749976B2 (en) | 2000-03-31 | 2004-06-15 | Dsm Desotech, Inc. | Solid imaging compositions for preparing polypropylene-like articles |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2000077385A1 (de) * | 1999-06-10 | 2000-12-21 | Dolmar Gmbh | Motorsäge |
JP2002235617A (ja) * | 2001-02-08 | 2002-08-23 | Denso Corp | 吸気装置 |
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 (de) * | 2003-09-02 | 2003-10-30 | Andreas Stihl AG & Co. KG, 71336 Waiblingen | Elastischer Verbindungsstutzen |
US20050217625A1 (en) * | 2004-04-05 | 2005-10-06 | Advanced Flow Engineering, Inc. | Heat shielded air intake system |
DE202009013953U1 (de) | 2009-10-14 | 2011-03-03 | Makita Corp., Anjo | Motor mit einer verbesserten Anordnung der Vergasereinheit |
CN103302630A (zh) * | 2013-06-17 | 2013-09-18 | 宋洪庆 | 汽车转向机直拉杆球头拆装工具 |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7304706U (de) * | 1973-11-15 | Rauh A | Tragbare Motorsage | |
US4469316A (en) * | 1978-01-24 | 1984-09-04 | Audi Nsu Auto Union Ag | Elastomeric mount with hydraulic damping |
DE3927218A1 (de) * | 1989-08-17 | 1991-02-21 | Bayerische Motoren Werke Ag | Daempfungselement zur lagerung von im kraftstoffbehaelter angeordneten kraftstoffpumpen |
US5029393A (en) * | 1989-04-15 | 1991-07-09 | Kioritz Corporation | Chain saw |
US5212886A (en) * | 1991-01-23 | 1993-05-25 | Kioritz Corporation | Chain saw |
US5243939A (en) * | 1991-10-14 | 1993-09-14 | Aktiebolaget Electrolux | Motor saw |
DE19753689A1 (de) * | 1996-12-05 | 1998-06-10 | Electrolux Ab | Aufhängungsvorrichtung für eine Element wie einen Vergaser eines Verbrennungsmotors |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0439404Y2 (de) * | 1986-09-11 | 1992-09-16 | ||
DE1762310U (de) * | 1957-12-23 | 1958-02-27 | Heinkel Ag Ernst | Elastische ansaugleitung. |
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 |
JPH051639Y2 (de) * | 1986-12-17 | 1993-01-18 | ||
SE9303470L (sv) * | 1993-10-21 | 1995-04-22 | Electrolux Ab | Insugningsrör för en förbränningsmotor |
-
1998
- 1998-06-29 DE DE19828727A patent/DE19828727A1/de not_active Ceased
-
1999
- 1999-06-10 DE DE29910005U patent/DE29910005U1/de not_active Expired - Lifetime
- 1999-06-25 EP EP99932734A patent/EP1091835B1/de not_active Expired - Lifetime
- 1999-06-25 US US09/674,676 patent/US6334421B1/en not_active Expired - Lifetime
- 1999-06-25 WO PCT/EP1999/004434 patent/WO2000000330A1/de active IP Right Grant
- 1999-06-25 DE DE59907640T patent/DE59907640D1/de not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE7304706U (de) * | 1973-11-15 | Rauh A | Tragbare Motorsage | |
US4469316A (en) * | 1978-01-24 | 1984-09-04 | Audi Nsu Auto Union Ag | Elastomeric mount with hydraulic damping |
US5029393A (en) * | 1989-04-15 | 1991-07-09 | Kioritz Corporation | Chain saw |
DE3927218A1 (de) * | 1989-08-17 | 1991-02-21 | Bayerische Motoren Werke Ag | Daempfungselement zur lagerung von im kraftstoffbehaelter angeordneten kraftstoffpumpen |
US5212886A (en) * | 1991-01-23 | 1993-05-25 | Kioritz Corporation | Chain saw |
US5243939A (en) * | 1991-10-14 | 1993-09-14 | Aktiebolaget Electrolux | Motor saw |
DE19753689A1 (de) * | 1996-12-05 | 1998-06-10 | Electrolux Ab | Aufhängungsvorrichtung für eine Element wie einen Vergaser eines Verbrennungsmotors |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6749976B2 (en) | 2000-03-31 | 2004-06-15 | Dsm Desotech, Inc. | Solid imaging compositions for preparing polypropylene-like articles |
Also Published As
Publication number | Publication date |
---|---|
US6334421B1 (en) | 2002-01-01 |
DE29910005U1 (de) | 1999-11-11 |
EP1091835A1 (de) | 2001-04-18 |
EP1091835B1 (de) | 2003-11-05 |
DE19828727A1 (de) | 1999-12-30 |
DE59907640D1 (de) | 2003-12-11 |
WO2000000330A9 (de) | 2000-05-11 |
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