EP0038263B1 - Vibration decoupling devices, especially for internal-combustion engine components - Google Patents

Vibration decoupling devices, especially for internal-combustion engine components Download PDF

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Publication number
EP0038263B1
EP0038263B1 EP81400583A EP81400583A EP0038263B1 EP 0038263 B1 EP0038263 B1 EP 0038263B1 EP 81400583 A EP81400583 A EP 81400583A EP 81400583 A EP81400583 A EP 81400583A EP 0038263 B1 EP0038263 B1 EP 0038263B1
Authority
EP
European Patent Office
Prior art keywords
members
joint
grooves
faces
combustion engine
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
Application number
EP81400583A
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German (de)
French (fr)
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EP0038263A1 (en
Inventor
Jean C. Roty
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.)
Unic Sa SA
Unic SAS
Original Assignee
Unic Sa SA
Unic SAS
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Filing date
Publication date
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Application filed by Unic Sa SA, Unic SAS filed Critical Unic Sa SA
Publication of EP0038263A1 publication Critical patent/EP0038263A1/en
Application granted granted Critical
Publication of EP0038263B1 publication Critical patent/EP0038263B1/en
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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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F02B77/11—Thermal or acoustic insulation
    • F02B77/13—Acoustic insulation
    • 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
    • F02B77/00—Component parts, details or accessories, not otherwise provided for
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2225/00—Synthetic polymers, e.g. plastics; Rubber
    • F05C2225/02—Rubber

Definitions

  • the present invention relates to an improvement to devices for decoupling vibrations between members, in particular members of internal combustion engines.
  • FR-A-2431 651 describes a profiled seal which houses the casing and which is retained against the mounting block by a flange.
  • the device comprises a profiled elastomer seal ensuring the connection between the parts of at least two members which are fitted into housings in the form of parallel grooves provided in said seal, said grooves being arranged with their openings located on opposite faces of the seal and offset in height with respect to each other in order to reserve between them a deformable zone and so as to allow to remain, between the bottom of each groove and one of the faces of the seal, a bead of material in tight contact with the wall of one of the members.
  • the joint is preferably obtained by spinning and it is glued at its two ends by a suitable adhesive.
  • the elastomer is obviously of a type resistant to hydrocarbons and to ambient temperature.
  • the joint is produced in order to obtain a fitting assembly whose shape in section is studied to give the desired freedom of movement between the members, while ensuring sealing.
  • the device according to the invention is of an economical design and has easy mounting on the members.
  • FIG. 1 shows an internal combustion engine 1 on which is fixed to the lower part of the engine block a part 2 of a lower oil sump by means of a known fixing method such as screws 3.
  • the other part 4 of the lower casing is assembled with part 2 by means of a seal 5 which makes it possible to decouple parts 2 and 4 of the casing.
  • the seal shown in section in Figure 2 consists of an elastomer profile obtained by spinning and the ends of which are glued with an adhesive in order to constitute a continuous element.
  • the seal has two grooves 6, 6a which are arranged one above the other and whose openings 7, 7a are located on opposite sides of the seal, said grooves being intended to receive the folded edges 8 and 9 of the parts 4 and 2 of the housing.
  • a deformable zone of the seal which comprises at least one cell 10 filled with a gas.
  • the bead 11, 11 a has the shape of a lip which hermetically seals said walls.
  • the grooves 6, 6a are delimited on one of their faces by a lip 13, 13a in contact with the edges 8 and 9 of the parts of the casing. The seal alone assures the assembly of the two parts of the housing without using any other mechanical connection means.
  • the shapes of the seal 5 are such that it is mounted on the parts of the casing by elastic deformation and / or lifting of each of the lips 13, 13a at the time of positioning on each edge 8, 9 of the parts 4 and 2 of the housing.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Gasket Seals (AREA)

Description

La présente invention a pour objet un perfectionnement aux dispositifs de découplage de vibrations entre organes, notamment organes de moteurs à combustion interne.The present invention relates to an improvement to devices for decoupling vibrations between members, in particular members of internal combustion engines.

Dans le cadre de la réduction des bruits émis par les moteurs à combustion interne, le découplage de certains organes est bien connu en soi et les modes de réalisation sont nombreux et variés. Il est fait généralement appel, soit à l'adhé- risation des deux éléments à découpler, par un élastomère d'une épaisseur d'au moins une dizaine de millimètres, soit à un bridage mécanique avec interposition de joints épais également en élastomère. Toutefois, ces dispositifs sont d'une mise en oeuvre délicate ou onéreuse. Le FR-A-2431 651 décrit un joint profilé qui loge le carter et qui est retenu contre le bloc monteur par une bride.In the context of reducing the noise emitted by internal combustion engines, the decoupling of certain members is well known per se and the embodiments are numerous and varied. It is generally called upon, either by the adhesion of the two elements to be decoupled, by an elastomer with a thickness of at least ten millimeters, or by mechanical clamping with the interposition of thick seals also made of elastomer. However, these devices are difficult or expensive to implement. FR-A-2431 651 describes a profiled seal which houses the casing and which is retained against the mounting block by a flange.

Conformément à la présente invention le dispositif comprend un joint profilé en élastomère assurant la liaison entre les parties d'au moins deux organes qui sont emboîtées dans des logements en forme de rainures parallèles prévus dans ledit joint, lesdites rainures étant disposées avec leurs ouvertures situées sur des faces opposées du joint et décalés en hauteur l'une par rapport à l'autre afin de réserver entre celles-ci une zone déformable et de manière à laisser subsister, entre le fond de chaque rainure et l'une des faces du joint, un bourrelet de matière en contact étanche avec la paroi de l'un des organes.In accordance with the present invention, the device comprises a profiled elastomer seal ensuring the connection between the parts of at least two members which are fitted into housings in the form of parallel grooves provided in said seal, said grooves being arranged with their openings located on opposite faces of the seal and offset in height with respect to each other in order to reserve between them a deformable zone and so as to allow to remain, between the bottom of each groove and one of the faces of the seal, a bead of material in tight contact with the wall of one of the members.

Le joint est obtenu de préférence par filage et il est collé à ses deux extrémités par un adhésif adéquat.The joint is preferably obtained by spinning and it is glued at its two ends by a suitable adhesive.

L'élastomère est évidemment d'un type résistant aux hydrocarbures et à la température ambiante. Le joint est réalisé pour obtenir un montage à emboîtement dont la forme en section est étudiée pour donner la liberté de mouvement voulue entre les organes, tout en assurant l'étanchéité.The elastomer is obviously of a type resistant to hydrocarbons and to ambient temperature. The joint is produced in order to obtain a fitting assembly whose shape in section is studied to give the desired freedom of movement between the members, while ensuring sealing.

Le dispositif suivant l'invention est d'une conception économique et présente un montage facile sur les organes.The device according to the invention is of an economical design and has easy mounting on the members.

D'autres caractéristiques et avantages de l'invention seront mieux compris à la lecture de la description qui va suivre d'un mode de réalisation et en se référant aux dessins annexés, sur lesquels :

  • la figure 1 est une vue en élévation frontale et en coupe partielle d'un moteur dans lequel deux organes sont réunis par un dispositif de découplage suivant l'invention ;
  • la figure 2 est une vue en coupe d'un mode de réalisation d'un joint de découplage suivant l'invention.
Other characteristics and advantages of the invention will be better understood on reading the following description of an embodiment and with reference to the appended drawings, in which:
  • Figure 1 is a front elevational view in partial section of an engine in which two members are joined by a decoupling device according to the invention;
  • Figure 2 is a sectional view of an embodiment of a decoupling joint according to the invention.

A la figure 1 on a représenté un moteur à combustion interne 1 sur lequel est fixée à la partie inférieure du bloc moteur une partie 2 d'un carter inférieur d'huile au moyen d'un procédé de fixation connu tel que des vis 3. L'autre partie 4 du carter inférieur est assemblée avec la partie 2 au moyen d'un joint 5 qui permet d'assurer le découplement des parties 2 et 4 du carter.FIG. 1 shows an internal combustion engine 1 on which is fixed to the lower part of the engine block a part 2 of a lower oil sump by means of a known fixing method such as screws 3. The other part 4 of the lower casing is assembled with part 2 by means of a seal 5 which makes it possible to decouple parts 2 and 4 of the casing.

Le joint représenté en coupe à la figure 2 est constitué d'un profilé en élastomère obtenu par filage et dont les extrémités sont collées par un adhésif afin de constituer un élément continu. Le joint présente deux rainures 6, 6a qui sont disposées l'une au-dessus de l'autre et dont les ouvertures 7, 7a sont situées sur des côtés opposés du joint, lesdites rainures étant destinées à recevoir les bords repliés 8 et 9 des parties 4 et 2 du carter.The seal shown in section in Figure 2 consists of an elastomer profile obtained by spinning and the ends of which are glued with an adhesive in order to constitute a continuous element. The seal has two grooves 6, 6a which are arranged one above the other and whose openings 7, 7a are located on opposite sides of the seal, said grooves being intended to receive the folded edges 8 and 9 of the parts 4 and 2 of the housing.

Entre les rainures 6, 6a il est prévu une zone déformable du joint qui comporte au moins une alvéole 10 remplie d'un gaz.Between the grooves 6, 6a there is provided a deformable zone of the seal which comprises at least one cell 10 filled with a gas.

Entre le fond des rainures 6, 6a et l'une des faces du joint, il est prévu un bourrelet 11.11ade matière en contact étanche avec la paroi 12, 12a de l'une des parties 2 et 4 du carter.Between the bottom of the grooves 6, 6a and one of the faces of the seal, there is provided a bead 11.11ade of material in sealed contact with the wall 12, 12a of one of the parts 2 and 4 of the casing.

Dans le mode de réalisation représenté le bourrelet 11, 11 a présente la forme d'une lèvre qui épouse de façon étanche lesdites parois. Les rainures 6, 6a sont délimitées sur l'une de leurs faces par une lèvre 13, 13a en contact avec les bords 8 et 9 des parties du carter. Le joint assure à lui seul l'assemblage des deux parties du carter sans faire appel à un autre moyen de liaison mécanique.In the embodiment shown the bead 11, 11 a has the shape of a lip which hermetically seals said walls. The grooves 6, 6a are delimited on one of their faces by a lip 13, 13a in contact with the edges 8 and 9 of the parts of the casing. The seal alone assures the assembly of the two parts of the housing without using any other mechanical connection means.

Les formes du joint 5 sont telles que son montage sur les parties du carter s'effectue par déformation élastique et/ou soulèvement de chacune des lèvres 13, 13a au moment de la mise en place sur chaque bord 8, 9 des parties 4 et 2 du carter.The shapes of the seal 5 are such that it is mounted on the parts of the casing by elastic deformation and / or lifting of each of the lips 13, 13a at the time of positioning on each edge 8, 9 of the parts 4 and 2 of the housing.

Claims (5)

1. Device for decoupling vibrations particularly between the members of an internal combustion engine and comprising a sectional joint in elastomer ensuring the connection between the parts of at least two members, characterized in that the joint (5) is provided with parallel grooves (6, 6a) into which fit the edges (8, 9) of members (4 and 2) to be assembled, the said grooves (6, 6a) being arranged so as to have their openings (7, 7a) situated on opposite faces of the joint and being offset heightwise one with respect to the other, in order to keep between them a highly deformable area and that a beed (11, 11a) of material is left, between the bottom of each groove (6, 6a) and one of the faces of the joint, in tight contact with the wall (12, 12a) of one of the members (4, 2).
2. Decoupling device according to claim 1, characterized in that the grooves (6, 6a) into which the edges (8, 9) of the members to be assembled, are engaged, are defined on one of their faces by a lip (13, 13a) which is in contact with one of the faces of the edge (8, 9) of the member.
3. Decoupling device according to claim 1, characterized in that the joint (5) is continuous.
4. Decoupling device according to claims 1 or 2, characterized in that the joint presents, between the grooves (6, 6a) in the highly deformable area, at least one cell (10) filled with a gas.
5. Decoupling device according to claim 1, characterized in that the sealing beads (11, 11a) are in the form of lips resting against the walls (12, 12a) of the members.
EP81400583A 1980-04-15 1981-04-13 Vibration decoupling devices, especially for internal-combustion engine components Expired EP0038263B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8008415 1980-04-15
FR8008415A FR2480389A1 (en) 1980-04-15 1980-04-15 IMPROVEMENT TO DEVICES FOR DECOUPLING ORGANS, IN PARTICULAR FROM ORGANS OF INTERNAL COMBUSTION ENGINES

Publications (2)

Publication Number Publication Date
EP0038263A1 EP0038263A1 (en) 1981-10-21
EP0038263B1 true EP0038263B1 (en) 1983-12-07

Family

ID=9240898

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81400583A Expired EP0038263B1 (en) 1980-04-15 1981-04-13 Vibration decoupling devices, especially for internal-combustion engine components

Country Status (3)

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EP (1) EP0038263B1 (en)
DE (1) DE3161574D1 (en)
FR (1) FR2480389A1 (en)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR899609A (en) * 1942-03-27 1945-06-06 Daimler Benz Ag Profiled seal, in particular for sheet metal cowls of internal combustion engine cylinders
FR2192630A5 (en) * 1972-07-11 1974-02-08 Lif Sa
FR2383301A1 (en) * 1977-03-11 1978-10-06 Draftex Dev Ag SEALING AND RETAINING DEVICE FOR GLASS OR GLASS
CH612474A5 (en) 1976-07-08 1979-07-31 Saurer Ag Adolph Sound-insulated oil sump for internal combustion engines

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2431651A1 (en) * 1978-07-18 1980-02-15 Berliet Automobiles Shock absorbing seal between block and sump housing in IC engine - uses bolted asymmetric trough section collar to locate downturned sump flange in wrap-round seal

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR899609A (en) * 1942-03-27 1945-06-06 Daimler Benz Ag Profiled seal, in particular for sheet metal cowls of internal combustion engine cylinders
FR2192630A5 (en) * 1972-07-11 1974-02-08 Lif Sa
CH612474A5 (en) 1976-07-08 1979-07-31 Saurer Ag Adolph Sound-insulated oil sump for internal combustion engines
FR2383301A1 (en) * 1977-03-11 1978-10-06 Draftex Dev Ag SEALING AND RETAINING DEVICE FOR GLASS OR GLASS

Also Published As

Publication number Publication date
FR2480389A1 (en) 1981-10-16
FR2480389B1 (en) 1982-11-05
DE3161574D1 (en) 1984-01-12
EP0038263A1 (en) 1981-10-21

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