WO2012157613A1 - レゾネーター - Google Patents
レゾネーター Download PDFInfo
- Publication number
- WO2012157613A1 WO2012157613A1 PCT/JP2012/062323 JP2012062323W WO2012157613A1 WO 2012157613 A1 WO2012157613 A1 WO 2012157613A1 JP 2012062323 W JP2012062323 W JP 2012062323W WO 2012157613 A1 WO2012157613 A1 WO 2012157613A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- box structure
- circumferential
- wall
- groove
- circumferential groove
- Prior art date
Links
- 229920003002 synthetic resin Polymers 0.000 claims abstract description 5
- 239000000057 synthetic resin Substances 0.000 claims abstract description 5
- 238000013459 approach Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 27
- 230000002093 peripheral effect Effects 0.000 abstract description 15
- 229920005989 resin Polymers 0.000 description 11
- 239000011347 resin Substances 0.000 description 11
- 239000000470 constituent Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000717 retained effect Effects 0.000 description 2
- 230000007423 decrease Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
Images
Classifications
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- 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
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- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/10314—Materials for intake systems
- F02M35/10321—Plastics; Composites; Rubbers
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- 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
- F02M35/10—Air intakes; Induction systems
- F02M35/1034—Manufacturing and assembling intake systems
- F02M35/10354—Joining multiple sections together
- F02M35/1036—Joining multiple sections together by welding, bonding or the like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/02—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure
- B29C65/08—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using ultrasonic vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
- B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
- B29C66/12463—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being tapered
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/12—Joint cross-sections combining only two joint-segments; Tongue and groove joints; Tenon and mortise joints; Stepped joint cross-sections
- B29C66/124—Tongue and groove joints
- B29C66/1246—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove
- B29C66/12469—Tongue and groove joints characterised by the female part, i.e. the part comprising the groove being asymmetric
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
- B29C66/13—Single flanged joints; Fin-type joints; Single hem joints; Edge joints; Interpenetrating fingered joints; Other specific particular designs of joint cross-sections not provided for in groups B29C66/11 - B29C66/12
- B29C66/131—Single flanged joints, i.e. one of the parts to be joined being rigid and flanged in the joint area
- B29C66/1312—Single flange to flange joints, the parts to be joined being rigid
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/05—Particular design of joint configurations
- B29C66/302—Particular design of joint configurations the area to be joined comprising melt initiators
- B29C66/3022—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined
- B29C66/30223—Particular design of joint configurations the area to be joined comprising melt initiators said melt initiators being integral with at least one of the parts to be joined said melt initiators being rib-like
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
- B29C66/81425—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being stepped, e.g. comprising a shoulder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
- B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
- B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
- B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/80—General aspects of machine operations or constructions and parts thereof
- B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
- B29C66/832—Reciprocating joining or pressing tools
- B29C66/8322—Joining or pressing tools reciprocating along one axis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3055—Cars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/748—Machines or parts thereof not otherwise provided for
- B29L2031/749—Motors
- B29L2031/7492—Intake manifold
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- 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
- the present invention relates to an improvement of a resonator that is provided in an intake path of an engine and constitutes a part of the intake path.
- the main problem to be solved by the present invention is that a synthetic resin resonator can be appropriately configured by welding two box components.
- a resonator is a resonator made of a synthetic resin provided in an intake passage of an engine,
- the air chamber constituting this comprises a surrounding wall portion of the first box structure including a bottom surface portion and a surrounding wall portion surrounding the bottom surface portion, and a surrounding wall portion surrounding the bottom surface portion and the bottom surface portion.
- the second wall structure of the second box structure is made to butt and weld together,
- a circumferential groove is formed at the upper end of the circumferential wall portion of the first box structure, and the upper groove of the circumferential wall portion of the second box structure is housed in the circumferential groove at the time of the abutment.
- a circular protrusion that is welded to the bottom is formed, An upper end surface between the outer wall surface of the circumferential wall portion of the first box structure and the circumferential groove is positioned above an upper end surface between the inner wall surface and the circumferential groove. It was supposed to be.
- the circumferential wall portion of the first box component and the circumferential wall portion of the second box component are abutted so as not to cause a gap between the outer wall surfaces of both. It is possible to effectively prevent a situation in which the molten resin produced by the welding leaks to the outside of the resonator and forms burrs.
- the circumferential groove of the first box structure has a deepest part on one groove wall side located inside the first box structure, and the other groove wall is located between the deepest part and the other groove wall. If it has an inclined bottom surface that shallows the circumferential groove as it approaches, the molten resin produced by the welding is caused to flow inside the first box component, that is, inside the air chamber of the generated resonator. In this way, this welding can be performed, and leakage of the molten resin to the outside of the resonator can be more effectively prevented.
- An air gap may be formed between the wall and the wall.
- the second box structure can be firmly welded at the upper end portion of the circumferential wall portion.
- the distance between the inner wall surface and the circumferential groove in the circumferential wall portion of the first box structure may be made smaller than the distance between the outer wall surface and the circumferential groove.
- the inner and outer dimensions of the upper end portion are made the minimum necessary while ensuring the strength of the portion located outside the resonator at the upper end portion of the circumferential wall portion of the first box structure. be able to.
- the resonator made of synthetic resin can be appropriately configured by welding the two box structural bodies.
- FIG. 1 is a perspective view of a resonator according to an embodiment of the present invention.
- 2 is a cross-sectional view taken along line AA in FIG.
- FIG. 3 is a perspective view showing the first box structure and the second box structure constituting the resonator in a separated state.
- FIG. 4 is a plan view showing a resonator and a slider of a jig used for generating the resonator together.
- 5 is a cross-sectional view taken along line BB in FIG.
- FIG. 6 is a cross-sectional configuration diagram of a main part showing a state immediately before welding the first box constituent body and the second box constituent body constituting the resonator.
- FIG. 7 is a cross-sectional configuration diagram of a main part showing a state immediately after welding the first box structure and the second box structure constituting the resonator.
- the resonator R according to this embodiment is provided in the intake path of the engine and constitutes a part of the intake path.
- the resonator R has a structure that is disposed between the canister and the intake manifold in the intake passage.
- Such a resonator R has an air chamber 1 and a pipe portion 2 communicating with the air chamber 1.
- the air chamber 1 is constituted by a flat box-shaped body 3.
- the pipe portion 2 has a main pipe 2a connected to the air chamber 1 with one end of the pipe integrally connected to one of the wide surfaces 3a of the box-shaped body 3, and between the one end of the main pipe 2a and the other end of the pipe.
- One end of the pipe is integrally connected to the main pipe 2a, and the branch pipe 2b is connected to the main pipe 2a.
- the other end of the main pipe 2a is connected to one of the constituent pipes of the intake path (not shown), and the other end of the branch pipe 2b is connected to the other one of the constituent pipes of the intake path.
- the resonator R forms a part of the intake path.
- the box-shaped body 3 whose inside is the air chamber 1 is formed by combining a first box structure 4 and a second box structure 5.
- the box-like body 3 includes the bottom wall portion 4a and the peripheral wall portion 4b of the first box structure 4 provided with the peripheral wall portion 4b around the bottom surface portion 4a. It is comprised by butt-welding this surrounding wall part 5b of the 2nd box structure 5 provided with the surrounding wall part 5b which goes around the bottom face part 5a.
- the box-shaped body 3 has two wide surfaces 3a and 3a and a narrow side surface 3b extending between the two wide surfaces 3a and 3a.
- a wide surface 3a of the box-shaped body 3 is formed by the bottom surface portions 4a and 5a of the first box structure 4 and the second box structure 5, and the first box structure 4 and the second box structure 5 are formed.
- the narrow side surface 3b of the box-shaped body 3 is formed by the peripheral wall portions 4b and 5b.
- a circumferential groove 41 is formed in the upper end portion 40 of the circumferential wall portion 4b of the first box structure 4, and the circumferential groove 41 is formed in the upper end portion 50 of the circumferential wall portion 5b of the second box structure 5 during the abutment.
- a circumferential protrusion 51 is formed which is accommodated in 41 and welded to the groove bottom 41 e of the circumferential groove 41.
- each of the first box structure body 4 and the second box structure body 5 has hook-shaped portions 42 and 52 protruding outward from the upper end portions 40 and 50 of the circumferential wall portions 4b and 5b. Yes. And in the 1st box structure 4, on the upper end surface 45 between the outer wall surface 43 of the surrounding wall part 4b comprised by this bowl-shaped part 42, and the inner wall surface 44 of the surrounding wall part 4b.
- the circumferential groove 41 is formed in an engraved shape.
- the upper end surface 55 located between the outer wall surface 53 of the circumferential wall portion 5 b formed by the bowl-shaped portion 52 and the inner wall surface 54 of the circumferential wall portion 5 b is provided.
- the circular protrusion 51 is provided in a protruding manner.
- the upper end surface 45b between the outer wall surface 43 and the circumferential groove 41 in the circumferential wall portion 4b of the first box structure 4 is formed between the inner wall surface and the circumferential wall. It is positioned above the upper end surface 45a located between the grooves 41. (Fig. 7)
- the peripheral wall portion 4b of the first box structure 4 and the peripheral wall portion 5b of the second box structure 5 are connected to the outer wall surface 43 of both. , 53 can be abutted so as not to generate a gap between them, and it is possible to effectively prevent a situation in which the molten resin produced by the welding leaks to the outside of the resonator R and forms burrs.
- the pipe portion 2 is provided in the first box structure 4.
- the first box structure 4 is supported on a jig with the tube portion 2 facing down, and the second box structure 5 is lowered onto the first box structure 4. I am trying to do it.
- the jig includes a receiving member S having a pressure contact portion Sa with respect to the outer wall surface 43 of the circumferential wall portion 4b of the first box structural body 4, and the first box structural body 4 includes four receiving members S ... S. It is pressed down and supported by. (FIGS. 4 and 5) After completion of the welding, the receiving member S slides and the pressing of the first box structure 4 is released.
- the welding is performed by melting the protruding end side of the circumferential protrusion 51 by a known welding technique such as ultrasonic welding.
- the circumferential groove 41 of the first box structure 4 has the deepest portion 41c on the side of the one groove wall 41a located inside the first box structure 4.
- an inclined bottom surface 41d is formed between the deepest portion 41c and the other groove wall 41b to make the circumferential groove 41 shallower as the other groove wall 41b is approached. That is, the groove bottom 41e of the circumferential groove 41 is composed of a deepest portion 41c and an inclined bottom surface 41d.
- the circumferential groove 41 has a groove bottom 41e in the deepest portion 41c as a horizontal plane in a direction perpendicular to the inner wall surface 44, and is between the deepest portion 41c and the other groove wall 41b.
- the groove bottom 41e is the inclined bottom surface 41d.
- surroundings protrusion 51 is pressed and welded to this inclined bottom face 41d. (This welding location is indicated by reference numeral 41f in FIGS. 6 and 7 / FIG. 7)
- the inclined bottom surface 41d guides the molten resin generated by the welding to the inside of the first box structure 4, that is, the inside of the air chamber 1 of the generated resonator R. This welding can be performed, and leakage of the molten resin to the outside of the resonator R can be prevented more effectively.
- the molten resin generated by the welding can be retained in the gap x and the welding can be performed, and leakage of the molten resin to the outside of the resonator R can be prevented.
- the one box structure 4 and the second box structure 5 can be firmly welded at the upper end portions 40 and 50 of the circumferential wall portions 4b and 5b.
- the distance y between the inner wall surface 44 and the circumferential groove 41 in the circumferential wall portion 4 b of the first box structure 4 is the distance between the outer wall surface 43 and the circumferential groove 41. It is smaller than the distance y ′ between them. (Fig. 6)
- the upper end portion 40 is secured while ensuring the strength of the portion located outside the resonator R in the upper end portion 40 of the circumferential wall portion 4b of the first box structure 4.
- the inside and outside dimensions of are made the minimum necessary.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
- Medical Preparation Storing Or Oral Administration Devices (AREA)
- Tubes (AREA)
Abstract
エンジンの吸気経路中に備えられる合成樹脂製のレゾネーターである。これを構成する空気室を、底面部とこの底面部を巡る周回壁部とを備えた第一の箱構成体のこの周回壁部と、底面部とこの底面部を巡る周回壁部とを備えた第二の箱構成体のこの周回壁部とを突き合わせ溶着させて構成させている。第一の箱構成体の周回壁部の上端部には周回溝が形成され、第二の箱構成体の周回壁部の上端部には前記突き合わせ時に周回溝に納められて周回溝の溝底に溶着される周回突部が形成されている。第一の箱構成体の周回壁部におけるその外壁面と周回溝との間にある上端面が、その内壁面と前記周回溝との間にある上端面よりも上方に位置されている。
Description
この発明は、エンジンの吸気経路中に備えられてこの吸気経路の一部を構成するレゾネーターの改良に関する。
一対の容器部材の開放端に形成されたフランジ同士を溶着してなるレゾネーターがある。(特許文献1参照)かかるレゾネーターにあっては、一対の容器部材の一方のフランジに形成させた溝に、一対の容器部材の他方のフランジに形成させた突部を納め、この突部を溶融させて前記溶着をなしているものと理解される。しかしながら、単に溝に突部を納めての溶着では、溶融樹脂の溶着箇所外への漏れだし、特にレゾネーターの外側への漏れだしを抑止できる保証はなく、また、このような漏れ出しは溶着強度の低下の要因ともなる。
この発明が解決しようとする主たる問題点は、合成樹脂製のレゾネーターを、二つの箱構成体の溶着によって、適切に構成できるようにする点にある。
前記課題を達成するために、この発明にあっては、レゾネーターを、エンジンの吸気経路中に備えられる合成樹脂製のレゾネーターであって、
これを構成する空気室を、底面部とこの底面部を巡る周回壁部とを備えた第一の箱構成体のこの周回壁部と、底面部とこの底面部を巡る周回壁部とを備えた第二の箱構成体のこの周回壁部とを突き合わせ溶着させて構成させており、
第一の箱構成体の周回壁部の上端部には周回溝が形成され、第二の箱構成体の周回壁部の上端部には前記突き合わせ時に前記周回溝に納められて周回溝の溝底に溶着される周回突部が形成されていると共に、
第一の箱構成体の周回壁部におけるその外壁面と前記周回溝との間にある上端面が、その内壁面と前記周回溝との間にある上端面よりも上方に位置されるようになっているものとした。
これを構成する空気室を、底面部とこの底面部を巡る周回壁部とを備えた第一の箱構成体のこの周回壁部と、底面部とこの底面部を巡る周回壁部とを備えた第二の箱構成体のこの周回壁部とを突き合わせ溶着させて構成させており、
第一の箱構成体の周回壁部の上端部には周回溝が形成され、第二の箱構成体の周回壁部の上端部には前記突き合わせ時に前記周回溝に納められて周回溝の溝底に溶着される周回突部が形成されていると共に、
第一の箱構成体の周回壁部におけるその外壁面と前記周回溝との間にある上端面が、その内壁面と前記周回溝との間にある上端面よりも上方に位置されるようになっているものとした。
かかる構成によれば、前記溶着時において、第一の箱構成体の周回壁部と第二の箱構成体の周回壁部とを、両者の外壁面間に隙間を生じさせないように突き合わせることができ、かかる溶着により生じる溶融樹脂がレゾネーターの外側に漏れだしバリを形成するような事態を効果的に防止することができる。
前記第一の箱構成体の周回溝を、この第一の箱構成体の内側に位置される一方溝壁側に最深部を有し、この最深部と他方溝壁間にこの他方溝壁に近づくに連れて周回溝を浅くする傾斜底面を有するものとしておけば、かかる傾斜底面により、前記溶着により生じる溶融樹脂を第一の箱構成体の内側、つまり、生成されるレゾネーターの空気室の内側に誘導してこの溶着をなすことができ、かかるレゾネーターの外側への前記溶融樹脂に漏れだしを一層効果的に防止することができる。
また、前記第一の箱構成体の周回壁部と第二の箱構成体の周回壁部との突き合わせ時に、周回突部と周回溝部における第一の箱構成体の内側に位置される一方溝壁との間に空隙が形成されるようにしておくこともある。このようにしておけば、前記溶着により生じる溶融樹脂をかかる空隙に留めてこの溶着をなすことができ、レゾネーターの外側への前記溶融樹脂に漏れだしを防止しつつ第一の箱構成体と第二の箱構成体とを周回壁部の上端部において強固に溶着することができる。
また、前記第一の箱構成体の周回壁部におけるその内壁面と周回溝との間の距離を、その外壁面と周回溝との間の距離よりも小さくさせておくこともある。このようにした場合、第一の箱構成体の周回壁部の上端部におけるレゾネーターの外側に位置される箇所の強度を高く確保しながら、この上端部の内外寸法を必要最小限のものとすることができる。
この発明によれば、合成樹脂製のレゾネーターを、二つの箱構成体の溶着によって、適切に構成することができる。
以下、図1~図7に基づいて、この発明の典型的な実施の形態について、説明する。この実施の形態にかかるレゾネーターRは、エンジンの吸気経路中に備えられてこの吸気経路の一部を構成するものである。図示の例では、レゾネーターRは、前記吸気経路において、キャニスターとインテークマニホールドとの間に配される構造のものとなっている。
かかるレゾネーターRは、空気室1と、これに連通する管部2とを有している。空気室1は扁平の箱状体3によって構成されている。管部2は箱状体3の幅広の面3aの一方に管一端を一体に連接させて前記空気室1に連通した主管2aと、この主管2aの管一端と管他端との間においてこの主管2aに管一端を一体に連接させてこの主管2aに連通した分岐管2bとから構成されている。かかる主管2aの管他端を前記吸気経路の構成管の一つ(図示は省略する。)に接続させ、かつ、前記分岐管2bの管他端を前記吸気経路の構成管の他の一つ(図示は省略する。)に接続させることで、レゾネーターRはかかる吸気経路の一部を構成するようになっている。
内部を前記空気室1とする前記箱状体3は、第一の箱構成体4と第二の箱構成体5とを組み合わせてなる。具体的には、かかる箱状体3は、底面部4aとこの底面部4aを巡る周回壁部4bとを備えた第一の箱構成体4のこの周回壁部4bと、底面部5aとこの底面部5aを巡る周回壁部5bとを備えた第二の箱構成体5のこの周回壁部5bとを突き合わせ溶着させることで構成されている。
図示の例では、箱状体3は、二つの幅広の面3a、3aと、この二つの幅広の面3a、3a間に亙る幅狭の側面3bとを有している。第一の箱構成体4及び第二の箱構成体5の底面部4a、5aにより箱状体3の幅広の面3aが形成され、第一の箱構成体4及び第二の箱構成体5の周回壁部4b、5bにより箱状体3の前記幅狭の側面3bが形成されるようになっている。
かかる第一の箱構成体4の周回壁部4bの上端部40には周回溝41が形成され、第二の箱構成体5の周回壁部5bの上端部50には前記突き合わせ時に前記周回溝41に納められて周回溝41の溝底41eに溶着される周回突部51が形成されている。
図示の例では、第一の箱構成体4及び第二の箱構成体5はいずれも、周回壁部4b、5bの上端部40、50に外側に突き出す鍔状部42、52を有している。そして、第一の箱構成体4にあっては、この鍔状部42によって構成された周回壁部4bの外壁面43と、周回壁部4bの内壁面44との間にある上端面45に、前記周回溝41が刻設状に形成されている。また、第二の箱構成体5にあっては、前記鍔状部52によって構成された周回壁部5bの外壁面53と、周回壁部5bの内壁面54との間にある上端面55に、前記周回突部51が凸設されている。
そして、この実施の形態にあっては、前記第一の箱構成体4の周回壁部4bにおけるその外壁面43と前記周回溝41との間にある上端面45bが、その内壁面と前記周回溝41との間にある上端面45aよりも上方に位置されるようになっている。(図7)
これにより、この実施の形態にあっては、前記溶着時において、第一の箱構成体4の周回壁部4bと第二の箱構成体5の周回壁部5bとを、両者の外壁面43、53間に隙間を生じさせないように突き合わせることができ、かかる溶着により生じる溶融樹脂がレゾネーターRの外側に漏れだしバリを形成するような事態を効果的に防止可能となっている。
この実施の形態にあっては、前記管部2は第一の箱構成体4に備えられている。そして、前記溶着は、かかる第一の箱構成体4を管部2を下にして治具上に支持した上で、この第一の箱構成体4上に第二の箱構成体5を降下させてなすようにしている。治具は、第一の箱構成体4の周回壁部4bの外壁面43に対する圧接部Saを備えた受け部材Sを備えており、第一の箱構成体4は四つの受け部材S…Sによって押さえつけられて支持される。(図4、図5)前記溶着終了後は受け部材Sはスライド移動して第一の箱構成体4の押さえつけは解かれる。前記溶着は、超音波溶着などの公知の溶着手法によって、前記周回突部51の突きだし端側を溶融させることでなされる。
また、この実施の形態にあっては、前記第一の箱構成体4の周回溝41は、この第一の箱構成体4の内側に位置される一方溝壁41a側に最深部41cを有し、この最深部41cと他方溝壁41b間にこの他方溝壁41bに近づくに連れて周回溝41を浅くする傾斜底面41dを有している。すなわち、周回溝41の溝底41eは最深部41cと傾斜底面41dとから構成されている。
具体的には、図示の例では、周回溝41は、最深部41cにおいて溝底41eを内壁面44に直交する向きの水平面とすると共に、この最深部41cと他方溝壁41bとの間にある溝底41eを前記傾斜底面41dとしている。そして、前記周回突部51はこの傾斜底面41dに押しつけられて溶着されるようになっている。(図6、図7/図7にこの溶着箇所を符号41fで示す。)
これにより、この実施の形態にあっては、かかる傾斜底面41dにより、前記溶着により生じる溶融樹脂を第一の箱構成体4の内側、つまり、生成されるレゾネーターRの空気室1の内側に誘導してこの溶着をなすことができ、かかるレゾネーターRの外側への前記溶融樹脂に漏れだしを一層効果的に防止可能となっている。
また、この実施の形態にあっては、第一の箱構成体4の周回壁部4bと第二の箱構成体5の周回壁部5bとの突き合わせ時に、周回突部51と周回溝41における第一の箱構成体4の内側に位置される一方溝壁41aとの間に空隙xが形成されるようになっている。(図7)
これにより、この実施の形態にあっては、前記溶着により生じる溶融樹脂をかかる空隙xに留めてこの溶着をなすことができ、レゾネーターRの外側への前記溶融樹脂に漏れだしを防止しつつ第一の箱構成体4と第二の箱構成体5とを周回壁部4b、5bの上端部40、50において強固に溶着できるようになっている。
また、この実施の形態にあっては、第一の箱構成体4の周回壁部4bにおけるその内壁面44と周回溝41との間の距離yが、その外壁面43と周回溝41との間の距離y’よりも小さくなっている。(図6)
これにより、この実施の形態にあっては、第一の箱構成体4の周回壁部4bの上端部40におけるレゾネーターRの外側に位置される箇所の強度を高く確保しながら、この上端部40の内外寸法を必要最小限のものとしている。
2011年5月17日に出願された日本特許出願第2011-110449号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
2011年5月17日に出願された日本特許出願第2011-110449号の明細書、特許請求の範囲、図面及び要約書の全内容をここに引用し、本発明の明細書の開示として、取り入れるものである。
Claims (4)
- エンジンの吸気経路中に備えられる合成樹脂製のレゾネーターであって、
これを構成する空気室を、底面部とこの底面部を巡る周回壁部とを備えた第一の箱構成体のこの周回壁部と、底面部とこの底面部を巡る周回壁部とを備えた第二の箱構成体のこの周回壁部とを突き合わせ溶着させて構成させており、
第一の箱構成体の周回壁部の上端部には周回溝が形成され、第二の箱構成体の周回壁部の上端部には前記突き合わせ時に前記周回溝に納められて周回溝の溝底に溶着される周回突部が形成されていると共に、
第一の箱構成体の周回壁部におけるその外壁面と前記周回溝との間にある上端面が、その内壁面と前記周回溝との間にある上端面よりも上方に位置されるようになっていることを特徴とするレゾネーター。 - 第一の箱構成体の周回溝は、この第一の箱構成体の内側に位置される一方溝壁側に最深部を有し、この最深部と他方溝壁間にこの他方溝壁に近づくに連れて周回溝を浅くする傾斜底面を有していることを特徴とする請求項1に記載のレゾネーター。
- 第一の箱構成体の周回壁部と第二の箱構成体の周回壁部との突き合わせ時に、周回突部と周回溝における第一の箱構成体の内側に位置される一方溝壁との間に空隙が形成されるようになっていることを特徴とする請求項1又は請求項2に記載のレゾネーター。
- 第一の箱構成体の周回壁部におけるその内壁面と周回溝との間の距離が、その外壁面と周回溝との間の距離よりも小さくなっていることを特徴とする請求項1~請求項3のいずれか1項に記載のレゾネーター。
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