EP1132611A1 - Silencieux à résonateur pour un moteur de véhicule - Google Patents

Silencieux à résonateur pour un moteur de véhicule Download PDF

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Publication number
EP1132611A1
EP1132611A1 EP00105114A EP00105114A EP1132611A1 EP 1132611 A1 EP1132611 A1 EP 1132611A1 EP 00105114 A EP00105114 A EP 00105114A EP 00105114 A EP00105114 A EP 00105114A EP 1132611 A1 EP1132611 A1 EP 1132611A1
Authority
EP
European Patent Office
Prior art keywords
case
edge portion
section
resonator type
open end
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.)
Granted
Application number
EP00105114A
Other languages
German (de)
English (en)
Other versions
EP1132611B1 (fr
Inventor
Kiyohide Horii
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.)
Mahle Filter Systems Japan Corp
Original Assignee
Tennex Corp
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 Tennex Corp filed Critical Tennex Corp
Priority to DE2000617075 priority Critical patent/DE60017075T2/de
Priority to EP20000105114 priority patent/EP1132611B1/fr
Priority to DE2000105114 priority patent/DE1132611T1/de
Publication of EP1132611A1 publication Critical patent/EP1132611A1/fr
Application granted granted Critical
Publication of EP1132611B1 publication Critical patent/EP1132611B1/fr
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
    • F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
    • F02M35/0202—Manufacturing or assembling; Materials for air cleaner housings
    • F02M35/0203—Manufacturing or assembling; Materials for air cleaner housings by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1255—Intake silencers ; Sound modulation, transmission or amplification using resonance
    • 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
    • F02M35/12—Intake silencers ; Sound modulation, transmission or amplification
    • F02M35/1283—Manufacturing or assembly; Connectors; Fixations

Definitions

  • This invention relates to improvements in a resonator type silencer which is connected to an air intake duct of an internal combustion engine of an automotive vehicle in order to suppress vibration of intake air to be supplied to the engine.
  • a generally box-shaped resonator type silencer having a certain volume is disposed to be connected to an air intake duct of an automotive internal combustion engine.
  • the resonator type silencer functions to suppress vibration of intake air by causing air inside the resonator type silencer to make resonance with the intake air vibration.
  • Such a resonator type silencer is usually formed of plastic and is a large-sized part.
  • the resonator type silencer includes upper and lower cases which are independently fabricated. The upper and lower cases are joined to each other to form the resonator type silencer, in such a manner that the open end sections of them are thermally welded or welded upon vibration under a state where the open end sections are brought into contact with each other. Otherwise, the open end sections of the upper and lower cases may be joined by means of clips, screws or the like.
  • Such a technique is disclosed in Japanese Utility Model Provisional Publication No. 6-60764.
  • Another object of the present invention is to provide an improved resonator type silencer for an automotive internal combustion engine, which is high in suppression effect for intake air vibration in an air intake duct of the engine while lowering a production cost of the resonator type silencer.
  • a further object of the present invention is to provide an improved resonator type silencer for an automotive internal combustion engine, by which upper and lower cases constituting the resonator type silencer can be readily joined to each other maintaining a tight seal condition of the resonator type silencer, without using any facility or members for connecting the upper and lower cases.
  • a resonator type silencer comprises a first case having an open end section.
  • a second case is fabricated separate from the first case.
  • the second case has an open end section which is joinable with the open end section of the first case.
  • the open end section of the first case includes an end edge portion having a linear projection extending along the end edge portion.
  • the linear projection has an inclined face extending along the end edge portion and sloped down in a direction toward a surface of the open end section.
  • the open end section of the second case includes an end wall portion.
  • a guide wall is integral with the end wall portion and extending along an end edge portion of the open end section to define a groove extending along the end edge portion.
  • a seal edge portion is formed at a surface of at least one of the guide wall and the end wall portion and extends along the end edge portion of the open end section of the second case to define a part of the groove.
  • the seal edge portion is contactable with the inclined face of the linear projection of the end edge portion of the first case.
  • an engagement mechanism is further provided in the resonator type silencer and includes a projecting section formed integral with one of the first and second cases.
  • a receiving section is provided for receiving the projecting section so that the projecting section and the receiving section are engageable with each other, the receiving section being formed integral with the other of the first and second cases.
  • the thus arranged resonator type silencer can be readily assembled by bringing the open end sections of the upper and lower cases into contact with each other in a manner to insert the linear projection of one case into the groove formed in the other case, then by engaging the engagement mechanism formed between the upper and lower cases.
  • This makes it unnecessary to use a large-sized facility or separate members for joining the lower and upper cases, greatly facilitating production of the resonator type silencer.
  • a labyrinth structure formed by the linear projection and the groove is provided between the open end sections of the lower and upper cases, while an edge contact is made between the seal edge portion and the inclined face of the linear projection.
  • an air-tight seal can be securely maintained between the open end sections of the lower and upper cases.
  • the resonator type silencer S is connected to an air intake duct of an internal combustion engine of an automotive vehicle, though not shown.
  • the air intake duct forms part of an intake system of the engine.
  • the resonator type silencer S is provided with a connection duct 1 through which the inside of the resonator type silencer S is communicated with the air intake duct through which intake air flows into the engine.
  • the resonator type silencer S comprises a lower case 2 which is formed generally cup-shaped and has a generally rectangular cross-section in a plane perpendicular to the longitudinal axis of the lower case.
  • the lower case 2 is relatively deep or large in axial length.
  • An upper case 3 is joined at its lower end part with the lower case 2 at an upper end part, maintaining a tightly closed state.
  • the upper case 3 is formed generally cup-shaped and has a generally rectangular cross-section in a plane perpendicular to the axis of the upper case 3.
  • the upper case 2 is relatively shallow or small in axial length.
  • the connection duct 1 is formed integral with the upper case 3 and extends from an upper wall 3p of the upper case 3.
  • the lower case 2 is integrally provided at its outer surface with engagement projections 4, 4 through which the lower case 2 is fastened to a vehicle body of the automotive vehicle.
  • Each of the lower and upper cases 2, 3 is formed of plastic such as thermoplastic resin. Examples of the thermoplastic resin are polyethylene, and polyamide. Such thermoplastic resin may contain filler.
  • the whole body of the resonator type silencer S is formed generally box-shaped so as to have a certain volume.
  • the lower case 2 includes an open end section 2a located at the upper end part thereof and peripherally formed endless.
  • the open end section 2a includes an end edge portion P1 which laterally extends endless.
  • a linear projection 5 forms part of the end edge portion P1 and extends along the periphery of the lower case 2.
  • the projection 5 has an inclined face 6 which extends along the periphery of the lower case 2 and sloped down in a direction from the inner surface to outer surface of the open end section 2a.
  • a plurality of hook-like guide walls 7 are formed integral with the open end section 2a and projected from the surface of a end wall portion P2 of the open end section 2a.
  • Each hook-like guide wall 7 laterally extends along the end edge portion P1 and has a generally L-shaped cross-section.
  • the hook-like guide wall 7 includes an outward projecting portion 7a which is integral at its base part with the end wall portion P2 of the lower case 2. The outward projecting portion 7a laterally extends along the end edge.
  • An upward projecting portion 7b is integral at its lower part with an tip end part of the outward projecting portion 7a, so that a groove G1 extending along the end edge portion P1 is formed between the outer surface of the end wall portion P2 and the upwardly projecting portion 7b.
  • the adjacent hook-like guide walls 7, 7 are formed laterally aligned and separate from each other.
  • a plurality of generally wedge-shaped stopper projections or projecting sections 9 are integrally formed at the outer surface of the open end section 2a of the main body 2A of the lower case 2.
  • Each stopper projection 9 is located between the adjacent hook-like guide walls 7, 7.
  • Each stopper projection 9 forms part of an engagement mechanism (not identified) has an inclined face 8 which is sloped down in a direction toward the end edge portion P1.
  • the upper case 3 includes an open end section 3a located at the lower end part of the upper case 3 and peripherally extents endless.
  • the open end section 3a includes an end edge portion E1 which extends endless to extend along the periphery of the upper case 3.
  • a laterally extending hook-like guide wall 10 is formed integral with an end wall portion E2 of the open end section 3a and projected from the surface of the end wall portion E2.
  • the hook-like guide wall 10 peripherally extends along the end edge portion E1 and has a generally L-shaped cross-section. More specifically, the hook-like guide wall 10 includes an outward projecting portion 10a which is integral at its base part with the end wall portion E2 of the upper case 3.
  • the outward projecting portion 10a peripherally extends along the end edge portion E1.
  • a downward projecting portion 10b is integral at its upper part with an tip end part of the outward projecting portion 10a, so that a groove G2 extending along the end edge portion E1 is peripherally formed between the outer surface of the end wall portion E2 and the downward projecting portion 10b.
  • a peripherally extending seal edge portion 11 is formed at the inner surface of the hook-like guide wall 10. More specifically, the seal edge portion 11 is located to extend along a linear portion (not identified) at which the outward projecting portion 10a and the downwardly projecting portion 10b is integral with each other, so that the seal edge portion 11 can be brought into contact with the inclined face 6 of the linear projection 5 of the lower case 2 when the linear projection 5 is inserted into the groove G2 of the upper case 3.
  • a plurality of tongue-like locking piece or receiving sections 12 are formed integral with the open end section 3a and project downward from the open end section 3a by a certain length.
  • Each locking piece section 12 forms part of a locking or engagement mechanism (not identified) is located corresponding to each stopper projection 9 of the lower case 2.
  • Each locking piece section 12 is formed with a window or opening into which the stopper projection 9 can be fitted.
  • a plurality of ribs 14 are formed integral with the open end section 3a of the upper case 3 at the inner surface so as to function to reinforce the wall of the end wall portion E2 defining the groove G2.
  • Each rib 14 is plate-like and perpendicular to the inner surface of a main body 3A of the upper case 3.
  • Each rib 14 is integral with the end edge portion E1 and extends inward as best shown in Fig. 4.
  • Each rib 14 further extends downward from the end wall portion E2 by a certain length so as to form a downward projecting part 14a.
  • the downward projecting part 14a has a base section whose edge is formed flush with the outer surface of the end wall portion E2, so that the edge of the base section is brought into contact with the inner surface of the open end section 2a of the lower case 2.
  • the above resonator type silencer S is assembled as follows: First, as shown in Figs. 1 and 2, the open end sections 2a, 3a of lower and upper cases 2, 3 are placed opposite each other and then approached to each other. At this time, the downward projecting part 14a of each rib 14 of the upper case 3 is brought into slidable contact with the inner surface of the open end section 2a of the lower case 2, so that the open end sections 2a, 3a of the lower and upper cases 2, 3 are guided to be accurately positioned. Then, under this state, the open end sections 2a, 3a of the lower and upper cases 2, 3 are further close to each other.
  • the tip end part of the linear projection 5 of the lower case 2 is inserted into the groove G2 of the upper case 3, while the locking piece section 12 runs on the inclined face 8 of the stopper projection 9 of the lower case 2 upon elastically deforming.
  • the seal edge portion 11 formed at the inner surface of the hook-like guide wall 10 of the upper case 3 is brought into tight contact with the inclined face 6 of the linear projection 5 of the lower case 2, while the stopper projection 9 of the upper case 3 is fitted into the window 13 of the locking piece section 12 so as to restrict displacement of the lower and upper cases 2, 3 in a direction far from each other.
  • the downward projecting portion 10b of the guide wall 10 of the upper case 3 is fitted into the groove G1 formed by the hook-like guide wall 7 of the lower case 2. Additionally, the inner surface of the end edge portion P1 of the lower case 2 is brought into tight contact with the outer surface of the end wall portion E2 of the upper case 3.
  • a so-called labyrinth structure is formed between the open end sections 2a, 3a of the upper and lower cases 2, 3, more specifically by the end wall portion E2 of the upper case 3 fittingly inserted into the groove G2 of the upper case 3 and the downward projecting portion 10b of the upper case guide wall 10 fittingly inserted into the groove G1 of the lower case 2.
  • joining the lower and upper cases 2, 3 can be accomplished to assemble the resonator type silencer S only by pushing down the upper case 3 onto the lower case 2 in a direction where the open end sections 3a, 2a of them approach, allowing the locking piece section 12 to come into engagement with the stopper projection 9. Accordingly, an assembly operation of the resonator type silencer S is largely facilitated. Besides, a special facility for the assembly operation and parts for the joining are not required, thereby making it possible to produce the resonator type silencer S at a low cost.
  • Each rib 14 formed at the inner surface of the upper case 3 can not only sustain a reaction force for sealing between the seal edge portion 11 of the upper case 3 and the linear projection 5 of the lower case 2, but also serve as a guide for assembling the upper case 3 to the lower case 2 during assembly of the resonator type silencer S since the lower part of the rib 14 extends downward so as to be flush with the inner surface of the end wall portion E2 of the open end section 3a of the lower case 3. Accordingly, this resonator type silencer S omits providing an independent guide required for assembling the upper and lower cases, thereby reducing the amount of the material for the resonator type silencer thus accomplishing weight-lightening of the resonator type silencer S.
  • Figs. 6 and 7 illustrate an essential part of a second embodiment of the resonator type silencer S according to the present invention, which is similar to that of the first embodiment except for the shape of the seal edge portion 11 and a rib 15 formed in the lower case 2.
  • the seal edge portion 11 has a thin edge-like tip end part 16 which can be brought into tight contact with the inclined face 6 of the linear projection 5 of the rear case 2 in a manner to deform as shown in Fig. 7 when the lower and upper cases 2, 3 are assembled into the resonator type silencer S.
  • the rib 15 is formed at the inner surface of a main body 2A of the lower case 2 and extends upward to the open end section 2a.
  • the rib 15 is perpendicular to the wall of the main body 2A.
  • the rib 15 has an upper end edge 15a which is located to come into contact with the lower end edge of the end edge portion E1 of the upper case 3 as shown in Fig. 7 when the lower and upper cases 2, 3 are assembled, thereby preventing an excessive load from being applied to the edge-like tip end part 16 of the seal edge portion 11 of the upper case 3.
  • the edge-like tip end part 16 of the seal edge portion 11 is brought into contact with the inclined face 6 of the linear projection 5 in the open end section 2a of the lower case 2. Accordingly, an air-tight condition can be securely maintained between the lower and upper cases 2, 3 even if a production error or the like is made in the lower and upper cases 2, 3. Furthermore, the rib 15 can prevent an excessive load from being applied onto the edge-like end part 16 of the seal edge portion 11. This effectively protects the seal-edge portion 11 from deterioration and therefore protects the whole resonator type silencer S from being degraded in air-tight sealing ability.
  • Figs. 8 and 9 illiterate an essential part of a third embodiment of the resonator type silencer S according to the present invention, which is similar to that of the first embodiment except for the shape of the linear projection 5 of the lower case 2 and the cross-sectional shape of the upper part of the groove G2 formed in the upper case 3. More specifically, in this embodiment, the linear projection 5 in the end edge portion P1 of the lower case 2 has two opposite inclined faces 6 and 6A which are formed generally symmetrical, in which the inclined face 6A is sloped down in a direction toward the inner surface of the end wall portion P2.
  • seal edge portion 11A is formed at a linear portion (not identified) where the outward projecting portion 10a of the guide wall 10 is integral with the end edge portion E1 of the upper case 3.
  • the seal edge portions 11, 11A can be respectively brought into tight contact with the inclined faces 6, 6A of the end edge portion P1 of the lower case 2.
  • Figs. 10 and 11 illustrate an essential part of a fourth embodiment of the resonator type silencer S according to the present invention, which is similar to that of the first embodiment with the exception that a linear projection 17 having a semicircular cross-sectional shape is formed at the inner surface of the end wall portion P2 in the open end section 2a of the lower case 2.
  • the open end sections of the upper and lower cases are brought into alignment with and contact with each other. Then, the linear projection of one case is inserted into the groove formed in the other case, in which the inclined face of the linear projection comes into tight contact with the seal edge portion formed in the groove, thereby accomplishing a tight seal between the upper and lower cases.
  • the upper and lower cases can be readily joined with each other maintaining a tight seal condition, thereby making it unnecessary to use a large-scale facility only for joining the cases or separate parts for joining the cases. This lowers production cost for the resonator type silencer as compared with conventional techniques.
  • the labyrinth structure is formed between the linear projection and the groove while an edge contact is formed between the seal edge portion and the inclined face of the linear projection.
  • This provides a secure air-tight seal between the upper and lower cases, thus stably obtaining the suppression effect on the intake air vibration.
  • sealing with the seal edge portion is effectively accomplished by causing the seal edge portion to contact with the inclined face formed on the linear projection, and therefore the air-tight seal can be securely maintained between the upper and lower cases upon the seal edge portion slidably displacing on the inclined face of the linear projection during assembly of the upper and lower cases even if a slight production error is made in the upper and/or lower cases. This reduces irregularity in vibration suppression effect among many products.

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Exhaust Silencers (AREA)
EP20000105114 2000-03-10 2000-03-10 Silencieux à résonateur pour un moteur de véhicule Expired - Lifetime EP1132611B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DE2000617075 DE60017075T2 (de) 2000-03-10 2000-03-10 Resonator-Schalldämpfer für einen Fahrzeugmotor
EP20000105114 EP1132611B1 (fr) 2000-03-10 2000-03-10 Silencieux à résonateur pour un moteur de véhicule
DE2000105114 DE1132611T1 (de) 2000-03-10 2000-03-10 Resonator-Schalldämpfer für einen Fahrzeugmotor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP20000105114 EP1132611B1 (fr) 2000-03-10 2000-03-10 Silencieux à résonateur pour un moteur de véhicule

Publications (2)

Publication Number Publication Date
EP1132611A1 true EP1132611A1 (fr) 2001-09-12
EP1132611B1 EP1132611B1 (fr) 2004-12-29

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EP20000105114 Expired - Lifetime EP1132611B1 (fr) 2000-03-10 2000-03-10 Silencieux à résonateur pour un moteur de véhicule

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EP (1) EP1132611B1 (fr)
DE (2) DE1132611T1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2096296A1 (fr) * 2008-02-29 2009-09-02 Mann+Hummel Gmbh Boîtier de filtre
US7976603B2 (en) 2007-03-05 2011-07-12 Mann+Hummel Gmbh Filter housing
US8001945B2 (en) 2005-09-16 2011-08-23 Mann + Hummel Gmbh Resonator for an intake system of a motor vehicle
CN107204181A (zh) * 2017-07-26 2017-09-26 安徽理工大学 一种共振式迷宫消音方法与复合装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476196A1 (de) * 1963-02-16 1969-07-10 Ambrogio Fiocchi Luftfilter aus Kunststoff fuer Vergaser von Verbrennungsmotoren
JPH0660764A (ja) 1992-08-07 1994-03-04 Fujitsu Ltd リードスイッチの製造方法
US5295602A (en) * 1993-03-17 1994-03-22 General Motors Corporation Housing with snap latch closure
DE4326731A1 (de) * 1993-08-09 1995-02-16 Knecht Filterwerke Gmbh Luftfilter für Brennkraftmaschinen, Kompressoren und sonstige luftansaugende Maschinen
FR2745038A1 (fr) * 1996-02-16 1997-08-22 Renault Dispositif de positionnement pour filtre a air de moteur a combustion interne
US5725624A (en) * 1994-04-14 1998-03-10 Filterwerk Mann & Hummel Gmbh Air filter for the intake air of an internal-combustion engine
EP0897060A2 (fr) * 1997-08-13 1999-02-17 Honda Giken Kogyo Kabushiki Kaisha Silencieux d'admission
DE19811051A1 (de) * 1998-03-13 1999-09-16 Mann & Hummel Filter Luftansaugeinrichtung für einen Verbrennungsmotor

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1476196A1 (de) * 1963-02-16 1969-07-10 Ambrogio Fiocchi Luftfilter aus Kunststoff fuer Vergaser von Verbrennungsmotoren
JPH0660764A (ja) 1992-08-07 1994-03-04 Fujitsu Ltd リードスイッチの製造方法
US5295602A (en) * 1993-03-17 1994-03-22 General Motors Corporation Housing with snap latch closure
DE4326731A1 (de) * 1993-08-09 1995-02-16 Knecht Filterwerke Gmbh Luftfilter für Brennkraftmaschinen, Kompressoren und sonstige luftansaugende Maschinen
US5725624A (en) * 1994-04-14 1998-03-10 Filterwerk Mann & Hummel Gmbh Air filter for the intake air of an internal-combustion engine
FR2745038A1 (fr) * 1996-02-16 1997-08-22 Renault Dispositif de positionnement pour filtre a air de moteur a combustion interne
EP0897060A2 (fr) * 1997-08-13 1999-02-17 Honda Giken Kogyo Kabushiki Kaisha Silencieux d'admission
DE19811051A1 (de) * 1998-03-13 1999-09-16 Mann & Hummel Filter Luftansaugeinrichtung für einen Verbrennungsmotor

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8001945B2 (en) 2005-09-16 2011-08-23 Mann + Hummel Gmbh Resonator for an intake system of a motor vehicle
US7976603B2 (en) 2007-03-05 2011-07-12 Mann+Hummel Gmbh Filter housing
EP2096296A1 (fr) * 2008-02-29 2009-09-02 Mann+Hummel Gmbh Boîtier de filtre
CN107204181A (zh) * 2017-07-26 2017-09-26 安徽理工大学 一种共振式迷宫消音方法与复合装置

Also Published As

Publication number Publication date
DE1132611T1 (de) 2002-02-21
DE60017075D1 (de) 2005-02-03
DE60017075T2 (de) 2005-05-25
EP1132611B1 (fr) 2004-12-29

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