EP0318059B1 - Air cleaner for use with a portable engine - Google Patents
Air cleaner for use with a portable engine Download PDFInfo
- Publication number
- EP0318059B1 EP0318059B1 EP19880121325 EP88121325A EP0318059B1 EP 0318059 B1 EP0318059 B1 EP 0318059B1 EP 19880121325 EP19880121325 EP 19880121325 EP 88121325 A EP88121325 A EP 88121325A EP 0318059 B1 EP0318059 B1 EP 0318059B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- casing
- air cleaner
- main casing
- cap
- 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
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- 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
-
- 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
- F02B75/16—Engines characterised by number of cylinders, e.g. single-cylinder engines
-
- 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
Description
- The present invention relates to an air cleaner and in particular to an air cleaner for a portable engine adopted for a portable working apparatus such as a weed cutter.
- In particular, the present invention relates to an air cleaner which comprises a main casing fixed to a suction port of a carburettor of a portable engine, a cap casing being removably fitted to said main casing, said filter being held between the main casing and the cap casing.
- In conventional air cleaners of this type, the filter will be lost when the cap casing is removed from the main casing. To prevent this, in conventional air cleaners the periphery of the filter is formed larger than the inner diameter of a space portion for receiving the filter to compress the periphery of the filter when it is pushed into said space portion, thereby holding the filter. To maintain a predetermined supporting force at the periphery of such an oversized filter, it is necessary to enlarge a dimensional difference between the periphery of the filter and the inner diameter of the space portion to increase the compression dimension. Due to this, the filter however may protrude from said space portion, or wrinkles may be formed on the surfgace of the filter, thereby causing deformation of the filter.
- From US-A-29 99 562 an air cleaner according to the precharacterizing part of claim 1 is known having a main casing, a cap casing removably fitted to the main casing and a filter being received in that cap casing. Said main casing being fixed to the air suction port of the engine and having an opening to communicate with the air suction port of the engine. The filter is made of porous material for cleaning air which is sucked into the air suction port. Said cap casing has at least one protection support for supporting the filter. In this air cleaner however, when removing the cap casing and the filter element, there is nothing to prevent the dust from the dust side of the filter element from being taken into the inlet port of the carburettor.
- It is an object of the present invention to arrive at an improved air cleaner in which the filter is securely held when the cap casing is opened and in which the dust is prevented from being taken into the inlet port of the carburetor when removing the cap casing and the filter element.
- This object is achieved by the characterizing features of claim 1.
- A further advantage of the present invention is to arrive at an improved air cleaner in which the filter is not deformed. Furthermore, it is another advantage of the present invention to arrive at an air cleaner into which the filter can be easily installed and from which the filter can be easily removed.
- Further improvements and preferred embodiments of the inventive air cleaner are defined in the sub-claims.
- The inventive air cleaner is not restricted to a use in connection with portable engines but can be used with engines of different types.
- One way of carrying out the invention is described in detail below with reference to drawings which illustrate only one specific embodiment, in which:
- Fig 1 is a front view, partly broken, showing an air cleaner connected to a portable engine;
- Fig 2 is a cross-sectional view showing the details of the air cleaner;
- Fig 3 is an external view showing the air cleaner; and
- Fig 4 is a cross-sectional view showing the air cleaner.
- In Fig 1 there is shown a portable engine comprising an air filter according to an embodiment of the present invention. As shown in Fig 1, an
engine cylinder 5 is fixed on top of a crankcase (not shown).Reference numeral 15 depicts a centrifugal clutch which is fitted to the front side of a magnet wheel (not shown). - A
fan 23 having a plurality of fins is fixed to the rear side of the magnet wheel and afan cover 25 for covering thefan 23 is fixed to the front side of the crankcase to guide a blow of thefan 23 first upwards and then rearwards. Acylinder cover 29 covers both sides of theengine cylinder 5 and is positioned in series with thefan cover 25 to guide the blow towards the periphery of theengine cylinder 5. - A
partition 33 for covering a step formed on one side of thefan cover 25 and thecylinder cover 29 is integrally formed with thecylinder cover 29. Apartition 35 for covering another step formed on the other sides of thefan cover 25 and thecylinder cover 29 is integrally formed with one side of the crankcase and projects upwards. Anignition coil 37 has aniron coil 39 which is fixed to thepartition 35 byscrews 41. The current of theignition coil 37 is transmitted through acode 43 to anignition plug 45 located on top of theengine cylinder 5, and discharged from theignition coil 37. - A
carburettor 49 having anair cleaner 47 is fitted to one side of theengine cylinder 5, and amuffler cover 51 including a muffler (not shown) is fitted to the other side of theengine cylinder 5. - Figs 2 to 4 show the details of the
air cleaner 47. Amain casing 309 of theair cleaner 47 has an opening 307 which communicates with asuction port 305 of thecarburettor 49. Thecasing 309 is fixed to thecarburettor 49 withbolts 311. Achoke valve 313 is fitted by abolt 311 and opens and closes the opening 307.Ribs 317 are formed inside thecasing 309 to support a felt like or sponge likeporous filter 315. Acap casing 319 is removably fitted at its lower end to afitting portion 323 of themain casing 309 by afitting pin 321 to hold thefilter 315. Ahook 325 projecting from the tope of thecap casing 319 is stopped by a stoppingportion 327 of themain casing 309 due to the resiliency. Aspace 329 for receiving thefilter 315 is fomed in thecap casing 319.Supports cap casing 319 are removably inserted intoholes 335 which are formed to pass through thefilter 315. Thefilter 315 is held by apartition 337 for separating a part of the interior of thecap casing 319, by astep 339 of thesupport 333, and by themain casing 309. Amuffling chamber 343 is formed between thecap casing 319 and anouter wall 341 to communicate achamber 345 of thecap casing 319 with the atmosphere. Acover 347 for covering the top of thecarburettor 49 is fixed to the upper part of thecap casing 319. - According to the above arrangement, the atmosphere enters into the
chamber 345 through themuffling chamber 343 according to the suction force of the engine, and is sucked by thesuction port 305 of thecarburettor 49 through thefilter 315 and theopening 307. Thefilter 315 may be removed by removing thehook 325 from the stoppingportion 327 with fingers and by turning thecap casing 319 around thepin 321. Thefilter 315 is then taken out and cleaned. To install thefilter 315, thecap casing 319 is kept to be opened, and thefitting holes 335 of thefilter 315 are pushed toward thesupports cap casing 319 to place thefilter 315 in thespace 329. After than, thecap casing 319 is closed, and thehook 325 is engaged with the stoppingportion 327. - Since the inventive air cleaner is constituted as described above, the filter is not deformed, held securely when the cap casing is opened, thereby ensuring that the filter will not drop. Furthermore, the filter is easy to install and easy to remove.
Claims (8)
- An air cleaner for an engine having an air suction port (305), comprising a main casing (309) adapted to be fixed to the air suction port (305) of the engine and having an opening (307) to communicate with the air suction port of the engine, a cap casing (319) removably fitted to the main casing, a filter (315) made of porous material for cleaning air sucked into the air suction port (305), said cap casing (319) having a receiving portion (329) to which the filter (315) is adapted to he fitted, the filter (315) having at least one fitting hole (335), and at least one projection support (331,333) being provided in the receiving portion (329) of the cap casing (319), said at least one support (331,333) heing adapted to be fitted to the at least one fitting hole (315) of the filter to support the filter (315),
characterized in that
a chamber (343) for communicating inside of the air cleaner with atmosphere is provided on said cap casing (319) so that the air is sucked therefrom through the filter (315) into the suction port (305). - The air cleaner of claim 1, wherein the cap casing (319) is removably fitted to a fitting portion (323) of the main casing (309) by a fitting pin (321) so that the cap casing (319) is turned around the fitting pin (321) to be fitted on or removed from the main casing (309).
- The air cleaner of claims 1 or 2, further comprising a hook (325) for cooperating with a stopping portion (327) to removably fit the cap casing (319) to the main casing (309).
- The air cleaner of claims 2 or 3, wherein the fitting portion (323) is provided on a lower portion of the main casing (309), and the hook (325) is projectingly provided on an upper portion of the main casing (309) and the stopping portion (327) is provided on an upper portion of the cap casing (319).
- The air cleaner of claim 1 to 4, wherein a partition (337) defining the chamber (343) is provided in the receiving portion (329) of the cap casing (319).
- The air cleaner of one of claims 1 to 5, wherein a rib (317) is provided on the main casing (309) in order to support the filter (315) when the cap casing (319) is fitted on the main casing (309).
- The air cleaner of one of claims 1 to 6, wherein the main casing (309) is fixed at the vicinity of the opening (307) by a bolt (311), and a choke valve (313) is fitted to the main casing (309) by the bolt (311) so that the choke valve (311) opens or closes the opening (307).
- The air cleaner of one of claims 5 to 7, wherein the at least one support has a step (339), and the filter (315) is supported on the partition (337) and the step (339).
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP19880121325 EP0318059B1 (en) | 1985-10-09 | 1986-10-09 | Air cleaner for use with a portable engine |
Applications Claiming Priority (15)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP153635/85 | 1985-10-09 | ||
JP15363585U JPS6261925U (en) | 1985-10-09 | 1985-10-09 | |
JP172940/85 | 1985-11-12 | ||
JP1985172940U JPH0622139Y2 (en) | 1985-11-12 | 1985-11-12 | Air cleaner |
JP17294285U JPS6282721U (en) | 1985-11-12 | 1985-11-12 | |
JP172942/85 | 1985-11-12 | ||
JP18146085U JPS6290348U (en) | 1985-11-27 | 1985-11-27 | |
JP181460/85 | 1985-11-27 | ||
JP186619/85 | 1985-12-05 | ||
JP18661985U JPS6295122U (en) | 1985-12-05 | 1985-12-05 | |
JP26543/86 | 1986-02-27 | ||
JP2654386U JPS62138822U (en) | 1986-02-27 | 1986-02-27 | |
JP3747086U JPS62150528U (en) | 1986-03-17 | 1986-03-17 | |
JP37470/86 | 1986-03-17 | ||
EP19880121325 EP0318059B1 (en) | 1985-10-09 | 1986-10-09 | Air cleaner for use with a portable engine |
Related Parent Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP86114030.9 Division | 1986-10-09 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0318059A1 EP0318059A1 (en) | 1989-05-31 |
EP0318059B1 true EP0318059B1 (en) | 1993-03-17 |
Family
ID=27570873
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19880121325 Expired - Lifetime EP0318059B1 (en) | 1985-10-09 | 1986-10-09 | Air cleaner for use with a portable engine |
Country Status (1)
Country | Link |
---|---|
EP (1) | EP0318059B1 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6857399B2 (en) | 2002-08-12 | 2005-02-22 | Tecumseh Products Company | Air cleaner assembly for internal combustion engines |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR855739A (en) * | 1938-09-08 | 1940-05-18 | Air filter for internal combustion engines | |
GB974104A (en) * | 1960-02-23 | 1964-11-04 | Simms Motor Units Ltd | Improvements in or relating to gaseous fluid filters |
GB936777A (en) * | 1960-03-07 | 1963-09-11 | Gen Motors Corp | Improvements in and relating to filter devices for gases |
US2999562A (en) * | 1960-03-24 | 1961-09-12 | Briggs & Stratton Corp | Air cleaner |
GB1096971A (en) * | 1963-05-10 | 1967-12-29 | Tecalemit Engineering | Improvements in air filters for internal combustion engines |
GB1075376A (en) * | 1964-09-21 | 1967-07-12 | Gen Motors Ltd | Gas filter elements |
NL7217077A (en) * | 1972-12-15 | 1974-06-18 |
-
1986
- 1986-10-09 EP EP19880121325 patent/EP0318059B1/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
EP0318059A1 (en) | 1989-05-31 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US4213224A (en) | By-pass type portable vacuum cleaner | |
EP0422701B1 (en) | Portable blower | |
CA1203354A (en) | Noise reducing means for vacuum cleaner | |
JP3665220B2 (en) | Portable power work machine | |
US7007660B2 (en) | Portable power working machine | |
US4494490A (en) | Cylinder cover | |
AU2004202417A1 (en) | Motor Assembly and Vacuum Cleaner having the Same | |
EP1389681A1 (en) | Air cleaner assembly for internal combustion engines | |
EP0318059B1 (en) | Air cleaner for use with a portable engine | |
JPH10252585A (en) | Air cleaner | |
JP2004180941A (en) | Vacuum cleaner | |
US4744337A (en) | Portable engine | |
US6736615B1 (en) | Brush and bearing holder for a fan/motor | |
JP2525396Y2 (en) | Exhaust fan mounting device in grain dryer | |
JPH0625656Y2 (en) | Air cleaner device for engine | |
JPH04197460A (en) | Air cleaner | |
JP2544315Y2 (en) | Dust removal device for small engines | |
EP0221393A1 (en) | Portable engine | |
JP2500363Y2 (en) | Cheng Seo Inhaler | |
JPS6077721A (en) | Vibration-proof apparatus of electromotive blower | |
JPH0510894Y2 (en) | ||
JPS5832730Y2 (en) | Oil mist removal device | |
JPS6018201Y2 (en) | vacuum cleaner | |
JPH0125919B2 (en) | ||
JPH0310175Y2 (en) |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 19881220 |
|
AC | Divisional application: reference to earlier application |
Ref document number: 221393 Country of ref document: EP |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB IT SE |
|
17Q | First examination report despatched |
Effective date: 19901026 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AC | Divisional application: reference to earlier application |
Ref document number: 221393 Country of ref document: EP |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB IT SE |
|
REF | Corresponds to: |
Ref document number: 3688083 Country of ref document: DE Date of ref document: 19930422 |
|
ITF | It: translation for a ep patent filed |
Owner name: PROPRIA PROTEZIONE PROPR. IND. |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
EAL | Se: european patent in force in sweden |
Ref document number: 88121325.0 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: CA |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20011011 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 20011018 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: SE Payment date: 20011019 Year of fee payment: 16 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 20011129 Year of fee payment: 16 |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: IF02 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021009 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20021010 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030501 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20021009 |
|
EUG | Se: european patent has lapsed | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20030630 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 20051009 |