EP0318059B1 - Filtre à air pour moteur portable - Google Patents

Filtre à air pour moteur portable Download PDF

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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
Application number
EP19880121325
Other languages
German (de)
English (en)
Other versions
EP0318059A1 (fr
Inventor
Takanori Ebinuma
Hiroshi Katoh
Mitsuko Sakurai
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.)
Komatsu Zenoah Co
Original Assignee
Komatsu Zenoah Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from JP15363585U external-priority patent/JPS6261925U/ja
Priority claimed from JP17294285U external-priority patent/JPS6282721U/ja
Priority claimed from JP1985172940U external-priority patent/JPH0622139Y2/ja
Priority claimed from JP18146085U external-priority patent/JPS6290348U/ja
Priority claimed from JP18661985U external-priority patent/JPS6295122U/ja
Priority claimed from JP2654386U external-priority patent/JPS62138822U/ja
Priority claimed from JP3747086U external-priority patent/JPS62150528U/ja
Priority to EP19880121325 priority Critical patent/EP0318059B1/fr
Application filed by Komatsu Zenoah Co filed Critical Komatsu Zenoah Co
Publication of EP0318059A1 publication Critical patent/EP0318059A1/fr
Publication of EP0318059B1 publication Critical patent/EP0318059B1/fr
Application granted granted Critical
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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

Definitions

  • 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.
  • 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.
  • the filter will be lost when the cap casing is removed from the main casing.
  • 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.
  • an air cleaner according to the precharacterizing part of claim 1 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.
  • 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.
  • the inventive air cleaner is not restricted to a use in connection with portable engines but can be used with engines of different types.
  • Fig 1 there is shown a portable engine comprising an air filter according to an embodiment of the present invention.
  • 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 a fan cover 25 for covering the fan 23 is fixed to the front side of the crankcase to guide a blow of the fan 23 first upwards and then rearwards.
  • a cylinder cover 29 covers both sides of the engine cylinder 5 and is positioned in series with the fan cover 25 to guide the blow towards the periphery of the engine cylinder 5.
  • a partition 33 for covering a step formed on one side of the fan cover 25 and the cylinder cover 29 is integrally formed with the cylinder cover 29.
  • a partition 35 for covering another step formed on the other sides of the fan cover 25 and the cylinder cover 29 is integrally formed with one side of the crankcase and projects upwards.
  • An ignition coil 37 has an iron coil 39 which is fixed to the partition 35 by screws 41. The current of the ignition coil 37 is transmitted through a code 43 to an ignition plug 45 located on top of the engine cylinder 5, and discharged from the ignition coil 37.
  • a carburettor 49 having an air cleaner 47 is fitted to one side of the engine cylinder 5, and a muffler cover 51 including a muffler (not shown) is fitted to the other side of the engine cylinder 5.
  • FIGs 2 to 4 show the details of the air cleaner 47.
  • a main casing 309 of the air cleaner 47 has an opening 307 which communicates with a suction port 305 of the carburettor 49.
  • the casing 309 is fixed to the carburettor 49 with bolts 311.
  • a choke valve 313 is fitted by a bolt 311 and opens and closes the opening 307.
  • Ribs 317 are formed inside the casing 309 to support a felt like or sponge like porous filter 315.
  • a cap casing 319 is removably fitted at its lower end to a fitting portion 323 of the main casing 309 by a fitting pin 321 to hold the filter 315.
  • a hook 325 projecting from the tope of the cap casing 319 is stopped by a stopping portion 327 of the main casing 309 due to the resiliency.
  • a space 329 for receiving the filter 315 is fomed in the cap casing 319.
  • Supports 331 and 333 projecting inside the cap casing 319 are removably inserted into holes 335 which are formed to pass through the filter 315.
  • the filter 315 is held by a partition 337 for separating a part of the interior of the cap casing 319, by a step 339 of the support 333, and by the main casing 309.
  • a muffling chamber 343 is formed between the cap casing 319 and an outer wall 341 to communicate a chamber 345 of the cap casing 319 with the atmosphere.
  • a cover 347 for covering the top of the carburettor 49 is fixed to the upper part of the cap casing 319.
  • the atmosphere enters into the chamber 345 through the muffling chamber 343 according to the suction force of the engine, and is sucked by the suction port 305 of the carburettor 49 through the filter 315 and the opening 307.
  • the filter 315 may be removed by removing the hook 325 from the stopping portion 327 with fingers and by turning the cap casing 319 around the pin 321.
  • the filter 315 is then taken out and cleaned.
  • the cap casing 319 is kept to be opened, and the fitting holes 335 of the filter 315 are pushed toward the supports 331 and 333 of the cap casing 319 to place the filter 315 in the space 329. After than, the cap casing 319 is closed, and the hook 325 is engaged with the stopping portion 327.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Claims (8)

  1. Filtre à air pour un moteur présentant un orifice d'admission d'air (305), comprenant un boîtier principal (309) adapté pour être fixé à l'orifice d'admission d'air (305) du moteur, et présentant une ouverture (307) pour communiquer avec l'orifice d'admission d'air du moteur, un boîtier servant de couvercle (319) monté de manière amovible sur le boîtier principal, un filtre (315) réalisé en matériau poreux pour épurer l'air aspiré devant passer par l'orifice d'admission d'air (305), ledit boîtier servant de couvercle (319) présentant une partie de logement (329) à laquelle le filtre (315) est adapté pour y être installé, le filtre (315) présentant au moins un orifice d'installation (335), et au moins un support faisant saillie (331, 333) étant prévu dans la partie de logement (329) du boîtier servant de couvercle (319), ledit au moins un support (331, 333) étant adapté pour être monté par rapport à l'au moins un orifice d'installation (315) du filtre, pour supporter ce dernier,
    caractérisé en ce que:
    une chambre (343), permettant de mettre l'intérieur du filtre à air en communication avec l'atmosphère, est prévue sur ledit boîtier servant de couvercle (319), de manière que l'air en soit aspiré en passant à travers le filtre (315), pour aller dans l'orifice d'admission (305).
  2. Filtre à air selon la revendication 1, dans lequel le boîtier servant de couvercle (319) est monté de manière amovible sur une partie de montage (323), au moyen d'une tige de montage (321), de manière que le boîtier servant de couvercle (319) soit tourné autour de la tige de montage (321), pour être installé sur, ou retiré du boîtier principal (309).
  3. Filtre à air selon les revendications 1 ou 2, comprenant en outre un crochet (325) pour coopérer avec une partie de butée (327), afin de monter le boîtier servant de couvercle (319) de manière amovible sur le boîtier principal (309).
  4. Filtre à air selon les revendications 2 ou 3, dans lequel la partie de montage (323) est prévue sur une partie inférieure du boîtier principal (309), et le crochet (325) est prévu de manière saillante sur une partie supérieure du boîtier principal (309), et la partie de butée (327) est prévue sur une partie supérieure du boîtier servant de couvercle (319).
  5. Filtre à air selon les revendications 1 à 4, dans lequel une paroi de séparation (337) définissant la chambre (343) est prévue dans la partie de logement (329) du boîtier servant de couvercle (319).
  6. Filtre à air selon l'une quelconque des revendications 1 à 5, dans lequel une nervure (317) est prévue sur le boîtier principal (309), afin de supporter le filtre (315) lorsque le boîtier servant de couvercle (319) est monté sur le boîtier principal (309).
  7. Filtre à air selon l'une quelconque des revendications 1 à 6, dans lequel le boîtier principal (309) est fixé à proximité de l'ouverture (307) au moyen d'un boulon (311), et une soupape d'étranglement (313) est montée sur le boîtier principal (309) au moyen du bouton (311), de manière que la soupape d'étranglement (313) ouvre ou ferme l'ouverture (307).
  8. Filtre à air selon l'une quelconque des revendications 5 à 7, dans lequel le au moins support présente un étage (339), et le filtre (315) est supporté sur la paroi de séparation (337) et l'étage (339).
EP19880121325 1985-10-09 1986-10-09 Filtre à air pour moteur portable Expired - Lifetime EP0318059B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP19880121325 EP0318059B1 (fr) 1985-10-09 1986-10-09 Filtre à air pour moteur portable

Applications Claiming Priority (15)

Application Number Priority Date Filing Date Title
JP15363585U JPS6261925U (fr) 1985-10-09 1985-10-09
JP153635/85 1985-10-09
JP1985172940U JPH0622139Y2 (ja) 1985-11-12 1985-11-12 エヤ−クリ−ナ
JP172942/85 1985-11-12
JP172940/85 1985-11-12
JP17294285U JPS6282721U (fr) 1985-11-12 1985-11-12
JP18146085U JPS6290348U (fr) 1985-11-27 1985-11-27
JP181460/85 1985-11-27
JP186619/85 1985-12-05
JP18661985U JPS6295122U (fr) 1985-12-05 1985-12-05
JP26543/86 1986-02-27
JP2654386U JPS62138822U (fr) 1986-02-27 1986-02-27
JP3747086U JPS62150528U (fr) 1986-03-17 1986-03-17
JP37470/86 1986-03-17
EP19880121325 EP0318059B1 (fr) 1985-10-09 1986-10-09 Filtre à air pour moteur portable

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 (fr) 1989-05-31
EP0318059B1 true EP0318059B1 (fr) 1993-03-17

Family

ID=27570873

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19880121325 Expired - Lifetime EP0318059B1 (fr) 1985-10-09 1986-10-09 Filtre à air pour moteur portable

Country Status (1)

Country Link
EP (1) EP0318059B1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR855739A (fr) * 1938-09-08 1940-05-18 Filtre à air pour moteurs à combustion interne
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 (fr) * 1972-12-15 1974-06-18

Also Published As

Publication number Publication date
EP0318059A1 (fr) 1989-05-31

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