CN100455776C - Spark catcher for a muffler - Google Patents

Spark catcher for a muffler Download PDF

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Publication number
CN100455776C
CN100455776C CNB2005800100117A CN200580010011A CN100455776C CN 100455776 C CN100455776 C CN 100455776C CN B2005800100117 A CNB2005800100117 A CN B2005800100117A CN 200580010011 A CN200580010011 A CN 200580010011A CN 100455776 C CN100455776 C CN 100455776C
Authority
CN
China
Prior art keywords
spark
exhaust outlet
catching device
plate shape
depression
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 - Fee Related
Application number
CNB2005800100117A
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Chinese (zh)
Other versions
CN1985079A (en
Inventor
F·埃德霍尔姆
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.)
Husqvarna AB
Electrolux AB
Original Assignee
Husqvarna AB
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
Application filed by Husqvarna AB filed Critical Husqvarna AB
Publication of CN1985079A publication Critical patent/CN1985079A/en
Application granted granted Critical
Publication of CN100455776C publication Critical patent/CN100455776C/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
    • F01N3/06—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for extinguishing sparks
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
    • F01N2230/00—Combination of silencers and other devices
    • F01N2230/06—Spark arresters

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Gas After Treatment (AREA)
  • Exhaust Silencers (AREA)

Abstract

This invention relates to a spark catcher arrangement for a muffler comprising a muffler shell (10) and an exhaust outlet cover (12) that are fixed to one another in such a manner that a pocket is created between the muffler shell and the exhaust outlet cover. A spark catcher net (21) is inserted in the pocket and said net is kept in the pocket by means of a snap fastening means (20, 23).

Description

The spark catcher that is used for silencing apparatus
Technical field
The present invention relates to a kind of spark catching device that is used for silencing apparatus, this device comprises a suppressor case and the exhaust outlet lid that is fixed together in a certain way each other, described means of fixation makes and forms a depression between housing and the outlet pipe that described depression is provided with a spark collecter ring.
Background technique
When using internal-combustion engine on chain saw, previously known adopt the spark catching device to prevent that spark from entering the silencing apparatus air outside in order to prevent for example woods fire.Traditional silencing apparatus generally includes an exhaust exit pipe on the housing that is fixed to silencing apparatus by spot welding or other proper methods.Being connected between this outer pipe and the housing also comprises one or several screw, can be clamped in the spark collecter ring in the depression between described pipe and the housing in this way.Yet owing to must remove one or more screws of silencing apparatus earlier before removing net, therefore this mode is in cleaning or trouble and consuming time during draping more.
The spark collecter ring that employing directly is fixed on through being threaded on the silencing apparatus also is a previously known, but must use several elements (net, additional screw and certain welded nut or pressure nut) to make this device quite complicated because it means.Also have the securing means that does not have nut, but such device has following shortcoming: net and the screw thread that directly forms on suppressor case damage easily.
Summary of the invention
The objective of the invention is to obtain a kind of not tool using and the spark catching device that is easy to remove in cleaning or when changing.This purpose is come real by a kind of spark catching device that is used for silencing apparatus, described spark catching device comprises a suppressor case and the exhaust outlet lid that is fixed together in a certain way each other, described means of fixation makes and forms a depression between suppressor case and the exhaust outlet lid, described depression receives a spark collecter ring, it is characterized in that described Netcom crosses the fastening effect of snap close of an elasticity tongue and an opening and remains in the depression.
Description of drawings
With reference now to accompanying drawing, describe one embodiment of the present of invention, this accompanying drawing is the perspective view of spark catching device.
Embodiment
Describedly the figure illustrates a kind of housing 10 that is used for the silencing apparatus of two stroke IC engine, this internal-combustion engine is used for handheld tool for example chain saw and shrub trimmer.Silencing apparatus is provided with one and is deflated the exit opening 11 that outlet cover 12 hides at least in part, described exhaust outlet lid is configured as the flat section 13 at band U type middle part 14 substantially, one end of flat section opens wide and forms a depression with the housing of silencing apparatus, can insert a spark entrapment plate 15 in this depression.Flat section 13 with a kind of suitable mode for example spot welding 16 be fastened on the suppressor case 10.The middle part 14 is provided with an outward extending cover 17, and the exit opening of this cover and silencing apparatus 11 is overlapping and be provided with the opening 18 of exhausting air outflow.The outer end at middle part 14 has the collar portion 19 of a band slotted opening 20.
Spark entrapment plate 15 comprises that one has the rectangle net 21 of relative rigidity structure and is fixed on the handle 22 by spot welding or other any suitable modes.Handle 22 comprises a folding sheet metal, and described net inserts wherein.Handle 22 is provided with elasticity tongue 23, and this tongue is the integral part of sheet metal and has the elongate ridge 24 that the opening 20 with collar portion 19 is arranged in parallel.The inward flange of spine 24 forms an inclined-plane 25.
Above-mentioned snap close securing means is worked by following mode.Spark entrapment plate 15 is inserted in the depression between suppressor case 10 and the outlet pipe 12 fully under the normal condition, so that net 21 hides the exit opening 11 of suppressor cases, thereby prevents that spark from following the opening 18 of exhausting air by cover 17.In this position, handle 22 inserts in the collar portions 19, and spine 24 puts in the opening 20, this means that spark entrapment plate 15 is fixed on the housing of silencing apparatus.The outside of elasticity tongue 23 extends to outside the collar 19 edges simultaneously.
By depressing elasticity tongue 23, the spark entrapment plate can easily be extracted out from depression and remove from the housing 10 of silencing apparatus, so that cleaning or replacing.Spark entrapment plate 15 can insert depression once more then, this means that elasticity tongue 23 is depressed on the inclined-plane 25 of spine 24, and elasticity tongue 23 returns initial position when spine 24 arrives opening 18, thereby the spark entrapment plate is fixed on the silencing apparatus once more.

Claims (7)

1, a kind of spark catching device that is used for silencing apparatus, comprise the suppressor case (10) and the exhaust outlet lid (12) that are fixed together in a certain way each other, described mode makes and forms a depression between suppressor case and the exhaust outlet lid, described depression receives a spark collecter ring (21), it is characterized in that described spark collecter ring remains in the depression by the fastening effect of snap close of an elasticity tongue (23) and an opening (20).
2, spark catching device as claimed in claim 1, it is characterized in that, described spark collecter ring (21) is connected on the sheet metal handle (22), this handle is provided with described elasticity tongue (23), and described elasticity tongue (23) has one by in the described opening (20) that puts in exhaust outlet lid (12) and the spine (24) that cooperatively interacts with described opening (20).
3, spark catching device as claimed in claim 2 is characterized in that, exhaust outlet lid (12) comprises plate shape part (13), and this plate shape partly has the hood-shaped part (17) of band exhaust outlet.
4, spark catching device as claimed in claim 3 is characterized in that, plate shape part (13) is provided with the collar portion (19) of at least a portion that is used to receive handle (22).
5, spark catching device as claimed in claim 4 is characterized in that, collar portion (19) is provided with the described opening (20) that is used for described elasticity tongue (23).
6, spark catching device as claimed in claim 2 is characterized in that, described spark collecter ring (21) is welded on the handle (22).
7, spark catching device as claimed in claim 1 is characterized in that, exhaust outlet lid (12) comprises plate shape part (13), and this plate shape partly has the hood-shaped part (17) of band exhaust outlet.
CNB2005800100117A 2004-04-02 2005-03-24 Spark catcher for a muffler Expired - Fee Related CN100455776C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE04009031 2004-04-02
SE0400903A SE0400903D0 (en) 2004-04-02 2004-04-02 Kick catcher for a muffler

Publications (2)

Publication Number Publication Date
CN1985079A CN1985079A (en) 2007-06-20
CN100455776C true CN100455776C (en) 2009-01-28

Family

ID=32173680

Family Applications (1)

Application Number Title Priority Date Filing Date
CNB2005800100117A Expired - Fee Related CN100455776C (en) 2004-04-02 2005-03-24 Spark catcher for a muffler

Country Status (6)

Country Link
US (1) US20070221441A1 (en)
EP (1) EP1740802A1 (en)
JP (1) JP2007530868A (en)
CN (1) CN100455776C (en)
SE (1) SE0400903D0 (en)
WO (1) WO2005095766A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2019157761A (en) 2018-03-13 2019-09-19 本田技研工業株式会社 Exhaust device with spark arrester
DE102018122042A1 (en) * 2018-09-10 2020-03-12 Faurecia Emissions Control Technologies, Germany Gmbh Component of an exhaust system and method for producing such a component

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2087240U (en) * 1991-05-18 1991-10-23 上海市化工物品汽车运输公司 Exhaust and extinguishing spark apparatus for automobile
US5451728A (en) * 1992-11-19 1995-09-19 Wci Outdoor Products, Inc. Muffler for two-cycle internal combustion engine and method of assembly
US5857327A (en) * 1996-06-21 1999-01-12 Kioritz Corporation Muffler for an internal combustion engine
JPH11148336A (en) * 1997-11-19 1999-06-02 Fuji Robin Ind Ltd Muffler with spark arrester
US5959262A (en) * 1997-10-30 1999-09-28 Andreas Stihl Ag & Co. Exhaust-gas muffler
JPH11324669A (en) * 1998-05-20 1999-11-26 Maruyama Mfg Co Ltd Spark arrester and its manufacture

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2725899A1 (en) * 1977-06-08 1978-12-21 Stihl Maschf Andreas EXHAUST SILENCER
JP2504053Y2 (en) * 1992-03-27 1996-07-03 株式会社丸山製作所 Exhaust silencer
US5295602A (en) * 1993-03-17 1994-03-22 General Motors Corporation Housing with snap latch closure
US5577779A (en) * 1994-12-22 1996-11-26 Yazaki Corporation Snap fit lock with release feature
WO1996025589A1 (en) * 1995-02-14 1996-08-22 Aktiebolaget Electrolux Spark arresting structure
US5743606A (en) * 1996-08-16 1998-04-28 Dell U.S.A., L.P. Computer cabinet latching mechanism
JP3738927B2 (en) * 1997-06-23 2006-01-25 本田技研工業株式会社 Muffler spark arrester equipment
JP2001050032A (en) * 1999-08-09 2001-02-23 Global Patent Network:Kk Spark arrester provided with exhaust emission acceleration function
WO2004042203A2 (en) * 2002-10-31 2004-05-21 White Brothers Performance Products, Inc. Muffler with spark arrestor

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2087240U (en) * 1991-05-18 1991-10-23 上海市化工物品汽车运输公司 Exhaust and extinguishing spark apparatus for automobile
US5451728A (en) * 1992-11-19 1995-09-19 Wci Outdoor Products, Inc. Muffler for two-cycle internal combustion engine and method of assembly
US5857327A (en) * 1996-06-21 1999-01-12 Kioritz Corporation Muffler for an internal combustion engine
US5959262A (en) * 1997-10-30 1999-09-28 Andreas Stihl Ag & Co. Exhaust-gas muffler
JPH11148336A (en) * 1997-11-19 1999-06-02 Fuji Robin Ind Ltd Muffler with spark arrester
JPH11324669A (en) * 1998-05-20 1999-11-26 Maruyama Mfg Co Ltd Spark arrester and its manufacture

Also Published As

Publication number Publication date
EP1740802A1 (en) 2007-01-10
US20070221441A1 (en) 2007-09-27
SE0400903D0 (en) 2004-04-02
JP2007530868A (en) 2007-11-01
CN1985079A (en) 2007-06-20
WO2005095766A1 (en) 2005-10-13

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C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
C17 Cessation of patent right
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20090128

Termination date: 20100324