JP2012240273A - Resin welded body - Google Patents

Resin welded body Download PDF

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Publication number
JP2012240273A
JP2012240273A JP2011111361A JP2011111361A JP2012240273A JP 2012240273 A JP2012240273 A JP 2012240273A JP 2011111361 A JP2011111361 A JP 2011111361A JP 2011111361 A JP2011111361 A JP 2011111361A JP 2012240273 A JP2012240273 A JP 2012240273A
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Prior art keywords
lid
opening
layer member
resin
inner layer
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JP2011111361A
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Japanese (ja)
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Tomoshi Enokida
智志 榎田
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DaikyoNishikawa Corp
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DaikyoNishikawa Corp
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Priority to JP2011111361A priority Critical patent/JP2012240273A/en
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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
    • B29C65/14—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using wave energy, i.e. electromagnetic radiation, or particle radiation
    • B29C65/16—Laser beams
    • B29C65/1629—Laser beams characterised by the way of heating the interface
    • B29C65/1635—Laser beams characterised by the way of heating the interface at least passing through one of the parts to be joined, i.e. laser transmission welding
    • 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
    • B29C65/7841—Holding or clamping means for handling purposes
    • 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
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • 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
    • 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
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • 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
    • B29C66/542—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 joining hollow covers or hollow bottoms to open ends of container bodies
    • 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
    • B29C66/55—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 sealing elements being incorporated into the joints, e.g. gaskets
    • 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
    • B29C66/61—Joining from or joining on the inside
    • B29C66/612—Making circumferential joints
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/72—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined
    • B29C66/723—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered
    • B29C66/7234—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer
    • B29C66/72343—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the structure of the material of the parts to be joined being multi-layered comprising a barrier layer for liquids
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/73—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/739—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset
    • B29C66/7392—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic
    • B29C66/73921—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the intensive physical properties of the material of the parts to be joined, by the optical properties of the material of the parts to be joined, by the extensive physical properties of the parts to be joined, by the state of the material of the parts to be joined or by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of the parts to be joined being a thermoplastic or a thermoset characterised by the material of at least one of the parts being a thermoplastic characterised by the materials of both parts being thermoplastics
    • 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
    • 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
    • B29C66/545—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 one hollow-preform being placed inside the other
    • 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
    • B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
    • B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined

Abstract

PROBLEM TO BE SOLVED: To provide a resin welded body with such advantages that the welding strength of a resin welded body can be increased and a material cost be cut.SOLUTION: This resin welded body is constituted as follows: A pipe body 3 includes an inner layer member 15 and an outer layer member 17 arranged in one piece with the outer surface of the inner layer member 15. In addition, a lid structure 13 incorporates a lid body 21, and a lid installation part 23 which blocks an opening 11 of a hollow body S1 installed integrally with a region excluding the outer circumferential part 21a of the lid body 21. The outer layer member 17 is constituted of a first resin with absorption to laser beams L, and the lid body 21 is constituted of a second resin with permeability to laser beams L. Besides, both the inner layer member 15 and the lid installation part 23 alone are constituted of a third resin with chemical resistance which can withstand a predetermined fluid. Further, the lid installation part 23 and the inner layer member 15 are brought into abutment with each other across all the circumference of the opening 11, while the opening 11 of the pipe body 3 is blocked at the lid installation part 23 of the lid structure 13. The outer circumferential part 21a of the lid body 21 is welded integrally with the outer layer member 17 by irradiation with the laser beams L.

Description

本発明は、中空部を有し、該中空部を外部に開放する開口部が形成された樹脂製中空体と、該中空体の開口部を閉塞する樹脂製蓋体とを備え、上記中空体の開口部を上記蓋体で閉塞した状態で両者をレーザ光の照射により一体に溶着してなる樹脂溶着体に関するものである。   The present invention includes a resin hollow body having a hollow portion and formed with an opening for opening the hollow portion to the outside, and a resin lid body for closing the opening of the hollow body, In the state which closed the opening part of this with the said cover body, it is related with the resin welding body formed by welding both together by irradiation of a laser beam.

特許文献１〜４には、中空部を有し、該中空部を外部に開放する開口部が形成された樹脂製中空体と、該中空体の開口部を閉塞する樹脂製蓋体とを備え、上記中空体の開口部を上記蓋体で閉塞した状態で両者をレーザ光の照射により一体に溶着してなる樹脂溶着体が開示されている。これら特許文献１〜４では、上記中空体がレーザ光に対して吸収性を有する第１の樹脂からなる一方、上記蓋体がレーザ光に対して透過性を有する第２の樹脂からなる。   Patent Documents 1 to 4 include a resin hollow body having a hollow portion and having an opening that opens the hollow portion to the outside, and a resin lid that closes the opening of the hollow body. In addition, a resin welded body is disclosed in which the opening of the hollow body is closed with the lid body and both are integrally welded by laser light irradiation. In these Patent Documents 1 to 4, the hollow body is made of a first resin having absorptivity to laser light, while the lid body is made of a second resin having permeability to the laser light.

特開２００９−２６２５７６号公報JP 2009-262576 A 特許第４２７２９８５号公報Japanese Patent No. 4272985 特許第４３７７４１９号公報Japanese Patent No. 4377419 特許第４５３１０７４号公報Japanese Patent No. 4531074

ところで、上記特許文献１〜４のような樹脂溶着体を所定の流体の流通又は貯蔵に使用する場合に、上記中空体及び蓋体をそれぞれ、上記所定の流体に耐えうる耐薬品性の樹脂で一体に構成することが考えられる。   By the way, when the resin welded body as in Patent Documents 1 to 4 is used for distribution or storage of a predetermined fluid, the hollow body and the lid body are each made of a chemical resistant resin that can withstand the predetermined fluid. It is conceivable to construct them integrally.

しかし、このようにした場合、一般に、耐薬品性の樹脂は、耐薬品性を有さない樹脂に比べてレーザ光の照射では互いに溶着しにくい性質を有しているので、溶着強度が低くなるおそれがある。   However, in this case, in general, a chemical-resistant resin has a property that it is difficult to weld to each other when irradiated with laser light as compared with a resin that does not have chemical resistance. There is a fear.

また、一般に、耐薬品性を有する樹脂材料は高価なので、このような樹脂材料を上記中空体及び蓋体の全体に使用すると、材料コストの増大を招く。   In general, since a resin material having chemical resistance is expensive, the use of such a resin material for the entire hollow body and lid causes an increase in material cost.

本発明は、かかる点に鑑みてなされたものであり、樹脂溶着体の溶着強度を高めるとともに材料コストを削減することを目的とする。   This invention is made | formed in view of this point, and it aims at reducing material cost while improving the welding intensity | strength of a resin welded body.

上記の目的を達成するため、本発明は、上記中空体及び蓋体の内側のみを上記所定の流体に耐えうる耐薬品性を有する樹脂で構成し、上記中空体及び蓋体の外側を構成する樹脂同士をレーザ光の照射により溶着したことを特徴とする。   In order to achieve the above object, according to the present invention, only the inside of the hollow body and the lid is made of a resin having chemical resistance capable of withstanding the predetermined fluid, and the outside of the hollow body and the lid is constituted. The resin is welded by laser light irradiation.

具体的には、請求項１に記載の発明は、中空部を有し、該中空部を外部に開放する開口部が形成された樹脂製中空体と、該中空体の開口部を閉塞する樹脂製蓋体とを備え、上記中空体の開口部を上記蓋体で閉塞した状態で両者をレーザ光の照射により一体に溶着してなる樹脂溶着体を対象とし、次のような解決手段を講じた。   Specifically, the invention according to claim 1 is a resin hollow body having a hollow portion and having an opening for opening the hollow portion to the outside, and a resin for closing the opening of the hollow body. Covering a resin welded body that is integrally welded with laser light in a state in which the opening of the hollow body is closed with the lid, and the following solution is taken It was.

すなわち、請求項１に記載の発明は、上記中空体は、内層部材と、該内層部材の外面に一体に設けられた外層部材とを備え、上記蓋体は、蓋本体と、該蓋本体の外周部を除く領域に一体に設けられ上記中空体の開口部を閉塞する施蓋部とを備え、上記外層部材は、レーザ光に対して吸収性を有する第１の樹脂からなり、上記蓋本体は、レーザ光に対して透過性を有する第２の樹脂からなり、上記内層部材及び施蓋部のみが共に、所定の流体に耐えうる耐薬品性を有する第３の樹脂からなり、上記蓋体の施蓋部で上記中空体の開口部を閉塞した状態で、上記施蓋部と上記内層部材とが開口部の全周に亘って当接し、かつ上記蓋本体の外周部と上記外層部材とがレーザ光の照射により一体に溶着されていることを特徴とする。   That is, in the first aspect of the present invention, the hollow body includes an inner layer member and an outer layer member integrally provided on the outer surface of the inner layer member, and the lid body includes a lid main body and the lid main body. A lid portion that is integrally provided in a region excluding the outer peripheral portion and closes the opening of the hollow body, and the outer layer member is made of a first resin that absorbs laser light, and the lid body Is made of a second resin that is transparent to laser light, and only the inner layer member and the lid portion are made of a third resin having chemical resistance that can withstand a predetermined fluid. In the state where the opening of the hollow body is closed by the lid portion, the lid portion and the inner layer member contact over the entire circumference of the opening, and the outer peripheral portion of the lid body and the outer layer member Are integrally welded by laser light irradiation.

請求項２に記載の発明は、請求項１に記載の樹脂溶着体において、上記内層部材は、上記中空体の開口部内周面を覆い、上記施蓋部は、上記閉塞状態でその外周部が開口部よりも外側に延出する基端側部と、該基端側部に一体に連続し、上記開口部における内層部材に嵌合する先端側部とからなり、上記施蓋部の基端側部と、上記開口部の開放方向に面する上記内層部材の端面とが開口部の全周に亘って当接するとともに、上記施蓋部の先端側部の外周面と上記開口部の開放方向に沿う上記内層部材の端面とが開口部の全周に亘って当接していることを特徴とする。   According to a second aspect of the present invention, in the resin welded body according to the first aspect, the inner layer member covers an inner peripheral surface of the opening of the hollow body, and the outer peripheral portion of the lid portion is in the closed state. A base end side portion extending outward from the opening portion, and a tip end side portion that is integrally continuous with the base end side portion and fits into the inner layer member in the opening portion, the base end of the lid portion The side and the end surface of the inner layer member facing the opening direction of the opening are in contact with each other over the entire circumference of the opening, and the outer peripheral surface of the tip side of the lid and the opening direction of the opening The end surface of the inner layer member along the line abuts over the entire circumference of the opening.

請求項１に係る発明によれば、レーザ光の照射により溶着される部材、すなわち蓋本体と外層部材とが、耐薬品性の樹脂により構成されていないので、耐薬品性の樹脂同士を溶着する場合に比べ、溶着強度を高めることができる。   According to the first aspect of the present invention, since the member to be welded by laser light irradiation, that is, the lid body and the outer layer member are not composed of the chemical resistant resin, the chemical resistant resins are welded together. Compared to the case, the welding strength can be increased.

また、一般的に高価な耐薬品性の樹脂を、内層部材と施蓋部のみに使用するので、中空体及び蓋体の全体に使用する場合に比べ、耐薬品性の樹脂の使用量を削減して材料コストを抑えることができる。   In addition, since generally expensive chemical-resistant resin is used only for the inner layer member and the lid part, the amount of chemical-resistant resin used is reduced compared to the case of using the entire hollow body and lid. Thus, the material cost can be reduced.

請求項２に係る発明によれば、樹脂溶着体を上記所定の流体の流通又は貯蔵に使用したとき、蓋体の施蓋部が２方向から内層部材に当接しているので、１方向のみから当接する場合に比べ、流体の漏出が、施蓋部と内層部材との間においてより確実に防止される。   According to the invention of claim 2, when the resin welded body is used for the flow or storage of the predetermined fluid, the lid portion of the lid body is in contact with the inner layer member from two directions, so that only from one direction. Compared to the case of contact, fluid leakage is more reliably prevented between the lid portion and the inner layer member.

本発明の実施形態１に係る樹脂溶着体としてのパイプを示す断面図である。It is sectional drawing which shows the pipe as a resin welded body which concerns on Embodiment 1 of this invention. パイプ本体の開口部を蓋体で閉塞する前の状態を示す図１相当図である。FIG. 2 is a view corresponding to FIG. 1 showing a state before the opening of the pipe body is closed with a lid. パイプ本体と蓋体との圧接箇所にレーザ光を照射する状態を示す図１相当図である。FIG. 2 is a view corresponding to FIG. 1 showing a state in which a laser beam is irradiated to a pressure contact portion between a pipe body and a lid. 本発明の実施形態２に係る樹脂溶着体としてのタンクを示す断面図である。It is sectional drawing which shows the tank as a resin welded body which concerns on Embodiment 2 of this invention. タンク本体の開口部を蓋体で閉塞する前の状態を示す図４相当図である。FIG. 5 is a view corresponding to FIG. 4 showing a state before the opening of the tank body is closed with a lid. 本発明の実施形態３に係る樹脂溶着体としてのタンクの上部を示す断面図である。It is sectional drawing which shows the upper part of the tank as a resin welded body which concerns on Embodiment 3 of this invention. 本発明の実施形態４に係る図６相当図である。FIG. 6 is a view corresponding to FIG. 6 according to Embodiment 4 of the present invention. 本発明の実施形態５に係る図６相当図である。FIG. 7 is a view corresponding to FIG. 6 according to Embodiment 5 of the present invention. 本発明の実施形態６に係る図６相当図である。FIG. 7 is a view corresponding to FIG. 6 according to Embodiment 6 of the present invention.

以下、本発明の実施形態について図面に基づいて説明する。   Hereinafter, embodiments of the present invention will be described with reference to the drawings.

（実施形態１）
図１に示すように、本発明の実施形態１に係る樹脂溶着体としてのパイプ１は、ＥＧＲ（Exhaust Gas Recirculation）装置に設けられるものであり、排気ガスを流通させる中空部Ｓ１を有する中空体としてのパイプ本体３を備えている。このパイプ本体３は、図１の左右方向に延びる第１パイプ部５と、該第１パイプ部５の図１の左右方向中程から分岐して下方に延びる第２パイプ部７と、該第２パイプ部７の図１の下端から左方向に延びる第３パイプ部９とで構成されている。上記第１パイプ部５の周壁における上記第２パイプ部７と対向する箇所には、上記中空部Ｓ１を外部に開放する開口部１１が形成され、この開口部１１は、断面略ハット状の樹脂製蓋体１３で閉塞されている。 (Embodiment 1)
As shown in FIG. 1, a pipe 1 as a resin welded body according to Embodiment 1 of the present invention is provided in an EGR (Exhaust Gas Recirculation) device and has a hollow body S1 through which exhaust gas is circulated. A pipe body 3 is provided. The pipe body 3 includes a first pipe portion 5 extending in the left-right direction in FIG. 1, a second pipe portion 7 extending from the middle of the first pipe portion 5 in the left-right direction in FIG. The second pipe portion 7 is composed of a third pipe portion 9 extending leftward from the lower end of FIG. An opening 11 that opens the hollow portion S1 to the outside is formed at a location facing the second pipe portion 7 on the peripheral wall of the first pipe portion 5, and the opening 11 is a resin having a substantially hat-shaped cross section. The lid 13 is closed.

上記パイプ本体３は、内層部材１５と、該内層部材１５の外面に一体に設けられた外層部材１７とで、内層部材１５が外層部材１７の内面を被覆するように二重に構成されている。上記内層部材１５は内筒部材を構成する一方、上記外層部材１７は外筒部材を構成している。   The pipe body 3 is configured in a double manner so that the inner layer member 15 covers the inner surface of the outer layer member 17 by the inner layer member 15 and the outer layer member 17 integrally provided on the outer surface of the inner layer member 15. . The inner layer member 15 constitutes an inner cylinder member, while the outer layer member 17 constitutes an outer cylinder member.

上記外層部材１７の開口部１１周縁には、環状圧接突部１８が上記開口部１１の開放方向に向けて全周に亘って一体に突設されている。この圧接突部１８の突出端面１８ａは、内周側から順に、上段面１８ｂと、該上段面１８ｂよりも突出高さの低い下段面１８ｃとで構成されている。   On the periphery of the opening 11 of the outer layer member 17, an annular pressure contact projection 18 is integrally projected over the entire circumference in the opening direction of the opening 11. The projecting end surface 18a of the press contact projection 18 is composed of an upper step surface 18b and a lower step surface 18c having a lower projecting height than the upper step surface 18b in this order from the inner peripheral side.

上記内層部材１５の開口部１１周縁には、外側（開口部１１の開放方向）に向けて突出する環状当接突部１９が上記開口部１１の全周に亘って上記パイプ本体３の開口部１１内周面を覆うように形成されている。この当接突部１９の突出端面１９ａは、上記開口部１１の開放方向に面している。一方、この当接突部１９の内周面１９ｂは、上記開口部１１の開放方向に沿うように延び、内層部材１５の端面を構成している。また、この当接突部１９の外周面１９ｃは上記開口部１１周縁に沿う上記外層部材１７の端面１７ａに接している。   On the periphery of the opening 11 of the inner layer member 15, an annular contact protrusion 19 that protrudes outward (in the opening direction of the opening 11) extends over the entire circumference of the opening 11. 11 is formed so as to cover the inner peripheral surface. The protruding end surface 19 a of the abutting protrusion 19 faces the opening direction of the opening 11. On the other hand, the inner peripheral surface 19 b of the contact protrusion 19 extends along the opening direction of the opening 11 and constitutes the end surface of the inner layer member 15. Further, the outer peripheral surface 19 c of the contact protrusion 19 is in contact with the end surface 17 a of the outer layer member 17 along the periphery of the opening 11.

上記蓋体１３は、断面ハット状の蓋本体２１を備え、この蓋本体２１は、中空円板状の基端部２１ｂと、該基端部２１ｂの内周端部から全周に亘って断面コ字状に一体に突出する先端部２１ｃとからなる。該蓋本体２１の外周部２１ａを除く領域、すなわち基端部２１ｂの内周部、及び先端部２１ｃには、断面ハット状の施蓋部２３が一体に形成されている。この施蓋部２３は、環状の板状基端側部２３ａと、当該基端側部２３ａの内周端部から上記蓋本体２１の先端部２１ｃを被覆するように断面コ字状に一体に突出（連続）する先端側部２３ｂとからなる。上記蓋本体２１の外周部２１ａ（基端部２１ｂの外周部）は、上記外層部材１７の圧接突部１８の突出端面１８ａの全体と重なった状態で、該突出端面１８ａの上段面１８ｂにレーザ光Ｌ（図３参照）の照射により一体に溶着されている。   The lid body 13 includes a lid body 21 having a hat-shaped cross section. The lid body 21 has a hollow disc-like base end portion 21b and a cross section extending from the inner peripheral end portion of the base end portion 21b to the entire circumference. It consists of the front-end | tip part 21c which protrudes integrally in U shape. A lid portion 23 having a hat-shaped cross section is integrally formed in a region excluding the outer peripheral portion 21a of the lid body 21, that is, the inner peripheral portion of the base end portion 21b and the distal end portion 21c. The lid portion 23 is integrally formed in a U-shaped cross section so as to cover the annular plate-like base end side portion 23a and the tip end portion 21c of the lid main body 21 from the inner peripheral end portion of the base end side portion 23a. It consists of a projecting (continuous) tip side portion 23b. The outer peripheral portion 21a of the lid body 21 (the outer peripheral portion of the base end portion 21b) is overlapped with the entire protruding end surface 18a of the pressure contact protruding portion 18 of the outer layer member 17, and the upper surface 18b of the protruding end surface 18a is laser-exposed. They are welded together by irradiation with light L (see FIG. 3).

一方、上記施蓋部２３は、上記パイプ本体３の開口部１１を閉塞している。この閉塞状態で、上記基端側部２３ａの外周部が開口部１１よりも外側に延出し、上記先端側部２３ｂが上記開口部１１における内層部材１５に嵌合している。詳しくは、上記施蓋部２３の基端側部２３ａは、上記内層部材１５の当接突部１９の突出端面１９ａに上記開口部１１の全周に亘って当接している。上記施蓋部２３の先端側部２３ｂの外周面２３ｃは、上記内層部材１５の当接突部１９の内周面１９ｂに上記開口部１１の全周に亘って当接している。したがって、パイプ１を排気ガスが流通したとき、蓋体１３の施蓋部２３が２方向から内層部材１５に当接しているので、１方向のみから当接する場合に比べ、排気ガスの漏出が、施蓋部２３と内層部材１５との間においてより確実に防止される。   On the other hand, the lid portion 23 closes the opening 11 of the pipe body 3. In this closed state, the outer peripheral portion of the base end side portion 23 a extends outward from the opening portion 11, and the distal end side portion 23 b is fitted to the inner layer member 15 in the opening portion 11. Specifically, the base end side portion 23 a of the lid portion 23 is in contact with the protruding end surface 19 a of the contact protrusion 19 of the inner layer member 15 over the entire circumference of the opening 11. The outer peripheral surface 23 c of the tip side portion 23 b of the lid portion 23 is in contact with the inner peripheral surface 19 b of the contact protrusion 19 of the inner layer member 15 over the entire periphery of the opening 11. Therefore, when the exhaust gas flows through the pipe 1, the lid portion 23 of the lid body 13 is in contact with the inner layer member 15 from two directions. This is reliably prevented between the lid portion 23 and the inner layer member 15.

上記外層部材１７は、カーボンブラック等の着色剤を配合したナイロン等、レーザ光に対して吸収性を有する第１の樹脂からなり、上記蓋本体２１は、ナイロン等、レーザ光に対して透過性を有する第２の樹脂からなり、上記内層部材１５及び施蓋部２３のみが共に、ポリフェニレンサルファイド（polyphenylene sulfide, PPS）樹脂（耐熱温度１８０℃）、ポリブチレンテレフタレート（polybutylene terephthalate, PBT）樹脂（耐熱温度１６０℃）等、パイプ１内を流通する排気ガスに耐えうる耐薬品性を有する第３の樹脂からなる。つまり、第１の樹脂と第２の樹脂は、パイプ１内を流通する排気ガスに耐えうる耐薬品性を有していない。   The outer layer member 17 is made of a first resin that absorbs laser light, such as nylon blended with a colorant such as carbon black, and the lid body 21 is transparent to laser light, such as nylon. Only the inner layer member 15 and the lid portion 23 are both polyphenylene sulfide (PPS) resin (heat resistant temperature 180 ° C.), polybutylene terephthalate (PBT) resin (heat resistant). It is made of a third resin having chemical resistance that can withstand the exhaust gas flowing through the pipe 1 such as a temperature of 160 ° C. That is, the first resin and the second resin do not have chemical resistance that can withstand the exhaust gas flowing through the pipe 1.

次に、上述のように構成されたパイプ１の製造方法について説明する。まず、パイプ本体３及び蓋体１３を成形する。上記パイプ本体３を成形するためには、まず、第１成形型を用いて内層部材１５を成形する。詳しくは、第１成形型は、図１に仮想線にて示すように、上記第１パイプ部５の内周面における開口部１１の左側を成形する第１分割スライド型１０５ａ、上記第１パイプ部５の内周面における開口部１１の右側を成形する第１分割スライド型１０５ａ’、上記第１分割スライド型１０５ａ，１０５ａ’の間、すなわち第１パイプ部７内における開口部１１対応箇所に配置され、上記第２パイプ部７の内周面を成形する第２分割スライド型１０５ｂ、上記第３パイプ部９の内周面を成形する第３分割スライド型１０５ｃ、及び上記内層部材１５の外周面を成形する外型を備えている。上記開口部１１は、上記第２パイプ部７の中空部Ｓ１（内周面）を形成するための第２分割スライド型１０５ｂをパイプ本体３の内部から取り出すのに使用される。   Next, the manufacturing method of the pipe 1 comprised as mentioned above is demonstrated. First, the pipe body 3 and the lid body 13 are formed. In order to mold the pipe body 3, first, the inner layer member 15 is molded using the first mold. Specifically, the first mold is a first split slide mold 105a that molds the left side of the opening 11 on the inner peripheral surface of the first pipe portion 5, as indicated by a virtual line in FIG. Between the first divided slide mold 105a ′ forming the right side of the opening 11 on the inner peripheral surface of the part 5 and the first divided slide molds 105a, 105a ′, that is, at the position corresponding to the opening 11 in the first pipe part 7. The second divided slide mold 105b that is arranged and molds the inner peripheral surface of the second pipe portion 7, the third divided slide mold 105c that molds the inner peripheral surface of the third pipe portion 9, and the outer periphery of the inner layer member 15 An outer mold for molding the surface is provided. The opening 11 is used to take out the second divided slide mold 105b for forming the hollow portion S1 (inner peripheral surface) of the second pipe portion 7 from the inside of the pipe body 3.

そして、上記第１成形型の外型を、該外型よりも大径の第２成形型に置き換えて該第２成形型と内層部材１５との間にキャビティ空間を形成し、該キャビティ空間に溶融樹脂を充填して固化することにより外層部材１７を内層部材１５の外側に形成する。   Then, the outer mold of the first mold is replaced with a second mold having a larger diameter than the outer mold to form a cavity space between the second mold and the inner layer member 15, and the cavity space is formed in the cavity space. The outer layer member 17 is formed outside the inner layer member 15 by filling the molten resin and solidifying.

次に、図２に示すように、パイプ本体３の開口部１１を蓋体１３で矢印Ｘ方向から閉塞し、この状態で、図３に示すように、上記蓋本体２１の外周部２１ａにおける上記圧接突部１８の下段面１８ｃとの重合箇所を押さえ治具１０１で矢印Ｙ方向（開口部１１の開放方向）から押圧することにより、上記蓋本体２１の外周部２１ａにおける上記圧接突部１８の上段面１８ｂとの重合箇所を、当該上段面１８ｂに上記開口部１１の全周に亘って圧接させる。そして、上記蓋本体２１における上記外層部材１７の上段面１８ｂとの圧接箇所に開口部１１の開放方向からレーザ装置１０３によりレーザ光Ｌを照射する。このレーザ光Ｌは蓋本体２１を透過した後に、外層部材１７の圧接突部１８の上段面１８ｂに照射されて吸収され、この部分の上記第１の樹脂が発熱して上記蓋本体２１及び外層部材１７の圧接面が加熱され、溶け始める。上記押さえ治具１０１による蓋本体２１の押圧は、上記施蓋部２３の基端側部２３ａが、上記内層部材１５の当接突部１９の突出端面１９ａに全周に亘って当接するまで行われる。これにより、図１に示すように、両者の圧接面を溶着させることができる。図１中、２４は溶着箇所を示す。このようなレーザ光Ｌの照射は、レーザ装置１０３を上記蓋本体２１と上記外層部材１７の上段面１８ｂとの圧接箇所に沿って弧を描くように移動させることにより、上記蓋本体２１の全周に亘って行われる。このとき、上記蓋本体２１におけるレーザ光Ｌの照射位置が、上記押さえ治具１０１による押圧箇所よりも内側に設定されているので、上記押さえ治具１０１が上記レーザ装置１０３の移動を妨げない。また、上記施蓋部２３の基端側部２３ａが上記内層部材１５の当接突部１９の突出端面１９ａに全周に亘って当接するので、溶着箇所２４を上記開口部１１の開放方向（図１における上下方向）に位置決めできる。したがって、溶着不足を防止できるとともに、レーザ光Ｌにより溶融する樹脂の量を多くなり過ぎないように調整できる。   Next, as shown in FIG. 2, the opening 11 of the pipe body 3 is closed from the direction of the arrow X with the lid body 13, and in this state, as shown in FIG. By pressing the overlapping portion with the lower step surface 18 c of the press contact protrusion 18 from the arrow Y direction (opening direction of the opening 11) with the pressing jig 101, the press contact protrusion 18 on the outer peripheral portion 21 a of the lid body 21 is pressed. The overlapping portion with the upper step surface 18b is brought into pressure contact with the upper step surface 18b over the entire circumference of the opening 11. Then, the laser device 103 irradiates the pressure contact portion of the lid body 21 with the upper surface 18 b of the outer layer member 17 from the opening direction of the opening 11. After passing through the lid body 21, the laser light L is irradiated to and absorbed by the upper surface 18b of the pressure contact protrusion 18 of the outer layer member 17, and the first resin in this portion generates heat to generate the lid body 21 and the outer layer. The pressure contact surface of the member 17 is heated and starts to melt. The lid body 21 is pressed by the holding jig 101 until the base end side portion 23a of the lid portion 23 abuts the projecting end surface 19a of the abutment projection 19 of the inner layer member 15 over the entire circumference. Is called. Thereby, as shown in FIG. 1, both press-contact surfaces can be welded. In FIG. 1, 24 indicates a welding location. Such irradiation with the laser light L is performed by moving the laser device 103 in an arc along the pressure contact portion between the lid body 21 and the upper step surface 18b of the outer layer member 17, so that the entire lid body 21 is moved. It is performed over the circumference. At this time, since the irradiation position of the laser beam L on the lid main body 21 is set on the inner side of the pressed position by the pressing jig 101, the pressing jig 101 does not hinder the movement of the laser device 103. Further, since the base end side portion 23a of the lid portion 23 contacts the protruding end surface 19a of the contact protrusion 19 of the inner layer member 15 over the entire circumference, the welded portion 24 is arranged in the opening direction of the opening 11 ( It can be positioned in the vertical direction in FIG. Therefore, insufficient welding can be prevented and the amount of resin melted by the laser beam L can be adjusted so as not to increase too much.

したがって、本実施形態１によれば、パイプ１の内面を、強酸性の流体である排気ガスに耐えうる耐薬品性の樹脂で構成したが、レーザ光Ｌの照射により溶着される部材、すなわち蓋本体２１と外層部材１７とを、耐薬品性の樹脂で構成していないので、耐薬品性の樹脂同士を溶着する場合に比べ、確実に溶着強度を高めることができる。   Therefore, according to the first embodiment, the inner surface of the pipe 1 is made of a chemical-resistant resin that can withstand exhaust gas, which is a strongly acidic fluid. Since the main body 21 and the outer layer member 17 are not made of a chemical resistant resin, the welding strength can be reliably increased as compared with the case where the chemical resistant resins are welded together.

また、一般的に高価な耐薬品性の樹脂を、内層部材１５と施蓋部２３のみに使用するので、パイプ本体３及び蓋体１３の全体に使用する場合に比べ、耐薬品性の樹脂の使用量を削減して材料コストを抑えることができる。   In addition, since an expensive chemical-resistant resin is generally used only for the inner layer member 15 and the lid portion 23, the chemical-resistant resin is used in comparison with the case where the pipe body 3 and the lid body 13 are used as a whole. The amount of material used can be reduced to reduce the material cost.

（実施形態２）
図４は、本発明の実施形態２に係る樹脂溶着体としてのタンク２５を示す。この実施形態２では、蓋体１３で閉塞された開口部１１が有底筒状のタンク本体２７に形成されている。上記タンク本体２７も、実施形態１と同様に、内層部材１５と外層部材１７とで二重に構成されている。このタンク本体２７の中空部Ｓ１には、強アルカリ性又は強酸性の所定の流体が貯蔵され、内層部材１５及び施蓋部２３のみが共に、この所定の流体に耐えうる第３の樹脂からなる。 (Embodiment 2)
FIG. 4 shows a tank 25 as a resin welded body according to Embodiment 2 of the present invention. In this Embodiment 2, the opening part 11 obstruct | occluded with the cover body 13 is formed in the bottomed cylindrical tank main body 27. As shown in FIG. Similarly to the first embodiment, the tank body 27 is also composed of the inner layer member 15 and the outer layer member 17 in a double manner. The hollow portion S1 of the tank body 27 stores a strong alkaline or strong acidic predetermined fluid, and only the inner layer member 15 and the lid portion 23 are made of a third resin that can withstand the predetermined fluid.

上記外層部材１７の開口部１１側端部の内周面には、断面Ｌ字状の環状切欠部２９が全周に亘って形成され、その結果、上記外層部材１７の開口部１１の開放方向に面する開放側端面１７ｂが、上段面２９ａと、該上段面２９ａの内側に位置する下段面２９ｂとで構成されている。上記上段面２９ａには、上記圧接突部１８が突設され、この圧接突部１８の突出面には段差が形成されていない。   An annular notch 29 having an L-shaped cross section is formed on the inner peripheral surface of the end portion of the outer layer member 17 on the opening 11 side. As a result, the opening direction of the opening portion 11 of the outer layer member 17 is formed. The open-side end surface 17b facing the upper surface 29a is composed of an upper step surface 29a and a lower step surface 29b located inside the upper step surface 29a. The pressure contact protrusion 18 protrudes from the upper surface 29 a, and no step is formed on the protrusion surface of the pressure contact protrusion 18.

上記内層部材１５の開口部１１側端部には、開口部１１の外側に向けてフランジ部３１が突設されている。このフランジ部３１における上記開口部１１の開放方向に面する開放側側面３１ａが、上記内層部材１５における上記開口部１１の開放方向に面する開放側端面１５ａの外周部分を構成している。上記内層部材１５の開放側端面１５ａは、上記外層部材１７の上段面２９ａとで面一をなしている。また、上記フランジ部３１の突出端面３１ｂは、上記切欠部２９の側面２９ｃに圧接し、上記フランジ部３１の上記開放側側面３１ａと反対方向に面する反開放側側面３１ｃは、上記下段面２９ｂに圧接している。   At the end of the inner layer member 15 on the opening 11 side, a flange portion 31 is projected toward the outside of the opening 11. An open side surface 31 a facing the opening direction of the opening portion 11 in the flange portion 31 constitutes an outer peripheral portion of the open side end surface 15 a facing the opening direction of the opening portion 11 in the inner layer member 15. The open side end surface 15a of the inner layer member 15 is flush with the upper surface 29a of the outer layer member 17. The protruding end surface 31b of the flange portion 31 is in pressure contact with the side surface 29c of the notch 29, and the anti-opening side surface 31c facing the opening side surface 31a of the flange portion 31 is the lower step surface 29b. Is in pressure contact.

上記蓋本体２１の基端部２１ｂの上記施蓋部２３形成面には、施蓋部２３が形成される内周部が外周部２１ａよりも施蓋部２３側（上記開口部１１の反開放方向側）に位置するように段差部２６が全周に亘って形成されている。上記段差部２６よりも内側の蓋本体２１の外周面２６ａ（段差部２６に対応する側面）は、施蓋部２３の外周端面２３ｄと面一になっている。   The inner peripheral portion where the lid portion 23 is formed is closer to the lid portion 23 side than the outer peripheral portion 21a (the anti-opening of the opening portion 11) on the surface where the lid portion 23 is formed on the base end portion 21b of the lid body 21. A step portion 26 is formed over the entire circumference so as to be located on the direction side. An outer peripheral surface 26 a (side surface corresponding to the stepped portion 26) of the lid body 21 inside the stepped portion 26 is flush with the outer peripheral end surface 23 d of the lid portion 23.

上記施蓋部２３の基端側部２３ａは、上記内層部材１５の開放側端面１５ａに上記開口部１１の全周に亘って当接している。上記施蓋部２３の先端側部２３ｂの外周面２３ｃは、上記内層部材１５の開口部１１側端部の内周面１５ｂに上記開口部１１の全周に亘って当接している。この内層部材１５の開口部１１側端部の内周面１５ｂが、上記開口部１１の開放方向に沿う端面に相当する。したがって、タンク２５に所定の流体が貯蔵されたとき、蓋体１３の施蓋部２３が２方向から内層部材１５に当接しているので、１方向のみから当接する場合に比べ、流体の漏出が、施蓋部２３と内層部材１５との間においてより確実に防止される。   The base end side portion 23 a of the lid portion 23 is in contact with the open end surface 15 a of the inner layer member 15 over the entire circumference of the opening portion 11. The outer peripheral surface 23 c of the distal end side portion 23 b of the lid portion 23 is in contact with the inner peripheral surface 15 b of the end portion on the opening portion 11 side of the inner layer member 15 over the entire circumference of the opening portion 11. The inner peripheral surface 15b at the end of the inner layer member 15 on the opening 11 side corresponds to an end surface along the opening direction of the opening 11. Therefore, when a predetermined fluid is stored in the tank 25, the lid portion 23 of the lid 13 is in contact with the inner layer member 15 from two directions. Further, it is more reliably prevented between the lid portion 23 and the inner layer member 15.

また、上記外層部材１７の圧接突部１８の内周面１８ｅと、上記外層部材１７の圧接突部１８より内側の上段面２９ａと、上記蓋本体２１の外周部２１ａと、上記段差部２６よりも内側の蓋本体２１の外周面２６ａと、上記施蓋部２３の外周端面２３ｄとの間には、環状の隙間Ｓ２が形成されている。   Further, the inner peripheral surface 18e of the press contact protrusion 18 of the outer layer member 17, the upper step surface 29a inside the press contact protrusion 18 of the outer layer member 17, the outer peripheral portion 21a of the lid body 21, and the step portion 26. An annular gap S <b> 2 is formed between the outer peripheral surface 26 a of the inner lid body 21 and the outer peripheral end surface 23 d of the lid portion 23.

そのほかの構成は実施形態１と同様であるので、共通の役割を果たす構成箇所には同一の符号を付してその詳細な説明を省略する。   Since the other structure is the same as that of Embodiment 1, the same code | symbol is attached | subjected to the location of a structure which plays a common role, and the detailed description is abbreviate | omitted.

上述のように構成されたタンク２５は、タンク本体２７及び蓋体１３を成形し、図５に示すように、タンク本体２７の開口部１１を蓋体１３で矢印Ｘ方向から閉塞し、実施形態１と同様に、上記蓋本体２１の外周部２１ａと上記外層部材１７の圧接突部１８の突出端面１８ａとを圧接させて圧接箇所にレーザ溶着を施すことにより製造できる。このとき、上記施蓋部２３の基端側部２３ａが上記内層部材１５の開放側端面１５ａに全周に亘って当接するので、溶着箇所２４を上記開口部１１の開放方向（図４における上下方向）に位置決めできる。したがって、溶着不足を防止できるとともに、レーザ光Ｌにより溶融する樹脂の量を多くなり過ぎないように調整できる。   In the tank 25 configured as described above, the tank body 27 and the lid body 13 are formed, and as shown in FIG. 5, the opening 11 of the tank body 27 is closed with the lid body 13 from the arrow X direction. 1, the outer peripheral portion 21 a of the lid main body 21 and the projecting end surface 18 a of the press-contact projection 18 of the outer layer member 17 can be press-contacted and laser-welded to the press-contact location. At this time, the base end side portion 23a of the lid portion 23 abuts the open side end surface 15a of the inner layer member 15 over the entire circumference, so that the welded portion 24 is positioned in the opening direction of the opening portion 11 (up and down in FIG. 4). Direction). Therefore, insufficient welding can be prevented and the amount of resin melted by the laser beam L can be adjusted so as not to increase too much.

したがって、本実施形態２によれば、実施形態１と同様に、溶着強度向上効果、及び材料コストの削減効果を得ることができる。   Therefore, according to the second embodiment, the effect of improving the welding strength and the effect of reducing the material cost can be obtained as in the first embodiment.

また、隙間Ｓ２が上記外層部材１７の圧接突部１８の内周面１８ｅの内側に形成され、レーザ光Ｌの照射により溶融した樹脂をこの隙間Ｓ２に溜めることができるので、溶融樹脂の蓋体１３外側への漏出量を削減できる。   Further, the gap S2 is formed inside the inner peripheral surface 18e of the pressure contact projection 18 of the outer layer member 17, and the resin melted by the irradiation of the laser light L can be stored in the gap S2. 13 The amount of leakage to the outside can be reduced.

（実施形態３）
図６は、本発明の実施形態３に係る樹脂溶着体としてのタンク２５を示す。この実施形態３では、上記内層部材１５の開放側端面１５ａに凹環状のシール溝３３が全周に亘って形成されている。このシール溝３３内に、例えばシリコーン樹脂からなるＯリング３５が嵌入されている。このＯリング３５は、上記シール溝３３の両側面３３ａ及び底面３３ｂと、上記蓋体１３の施蓋部２３の基端側部２３ａとに圧接している。これにより、タンク本体２７の中空部Ｓ１に貯蔵される流体の漏出が、Ｏリング３５とタンク本体２７（シール溝３３）との間、及びＯリング３５と蓋体１３との間において防止される。 (Embodiment 3)
FIG. 6 shows a tank 25 as a resin welded body according to Embodiment 3 of the present invention. In the third embodiment, a concave annular seal groove 33 is formed on the open side end surface 15a of the inner layer member 15 over the entire circumference. In this seal groove 33, an O-ring 35 made of, for example, silicone resin is fitted. The O-ring 35 is in pressure contact with both side surfaces 33 a and the bottom surface 33 b of the seal groove 33 and the base end side portion 23 a of the lid portion 23 of the lid body 13. Thereby, leakage of the fluid stored in the hollow portion S1 of the tank body 27 is prevented between the O-ring 35 and the tank body 27 (seal groove 33) and between the O-ring 35 and the lid body 13. .

そのほかの構成は実施形態２と同様であるので、共通の役割を果たす構成箇所には同一の符号を付してその詳細な説明を省略する。   Since the other configuration is the same as that of the second embodiment, the same reference numerals are assigned to components that play a common role, and detailed description thereof is omitted.

したがって、本実施形態３によれば、実施形態２と同様に、施蓋部２３と内層部材１５との当接による流体の漏出防止効果、溶着強度向上効果、材料コストの削減効果、及び溶融樹脂の漏出量削減効果を得ることができる。   Therefore, according to the third embodiment, as in the second embodiment, the fluid leakage prevention effect, the welding strength improvement effect, the material cost reduction effect, and the molten resin caused by the contact between the lid portion 23 and the inner layer member 15 The amount of leakage can be reduced.

（実施形態４）
図７は、本発明の実施形態４に係る樹脂溶着体としてのタンク２５を示す。この実施形態４では、上記蓋体１３の施蓋部２３が円板状に形成され、先端側部２３ｂを備えていない。また、上記蓋本体２１に先端部２１ｃが形成されておらず、蓋本体２１における段差部２６より内側の施蓋部２３形成面が平坦になっている。さらに、上記蓋本体２１の基端部２１ｂにおける上記タンク本体２７の圧接突部１８との圧接箇所よりも外側に、環状突出部３６が全周に亘って突設され、この突出部３６の内周面３６ａが上記圧接突部１８の外周面１８ｄに全周に亘って外側から当接している。これにより、上記開口部１１の開放方向に対して垂直な方向への上記蓋体１３の位置ずれが防止される。 (Embodiment 4)
FIG. 7 shows a tank 25 as a resin welded body according to Embodiment 4 of the present invention. In this Embodiment 4, the cover part 23 of the said cover body 13 is formed in disk shape, and is not provided with the front end side part 23b. Further, the tip end portion 21 c is not formed on the lid main body 21, and the lid forming portion 23 forming surface inside the stepped portion 26 in the lid main body 21 is flat. Further, an annular projecting portion 36 is provided over the entire periphery of the base end portion 21b of the lid body 21 outside the press contact portion with the press contact projection 18 of the tank body 27. The peripheral surface 36a is in contact with the outer peripheral surface 18d of the press contact protrusion 18 from the outside over the entire periphery. Thereby, the position shift of the lid 13 in the direction perpendicular to the opening direction of the opening 11 is prevented.

そのほかの構成は実施形態３と同様であるので、共通の役割を果たす構成箇所には同一の符号を付してその詳細な説明を省略する。   Since the other structure is the same as that of Embodiment 3, the same code | symbol is attached | subjected to the location of a structure which plays a common role, and the detailed description is abbreviate | omitted.

したがって、本実施形態４によれば、実施形態３と同様に、溶着強度向上効果、材料コストの削減効果、Ｏリングによる流体の漏出防止効果、及び溶融樹脂の漏出量削減効果を得ることができる。また、上記突出部３６が上記圧接突部１８に全周に亘って当接しているので、溶融樹脂の蓋体１３外側への漏出をより効果的に防止できる。   Therefore, according to the fourth embodiment, as in the third embodiment, the effect of improving the welding strength, the effect of reducing the material cost, the effect of preventing the leakage of fluid by the O-ring, and the effect of reducing the leakage amount of the molten resin can be obtained. . Moreover, since the said protrusion part 36 is contact | abutting over the said press contact protrusion 18 over the perimeter, it can prevent more effectively the leakage to the outer side of the cover body 13 of molten resin.

なお、突出部３６の内周面３６ａと圧接突部１８の外周面１８ｄとの間に若干の隙間を設けてもよい。これにより、蓋体１３のタンク本体２７への取り付けを容易にできる。   Note that a slight gap may be provided between the inner peripheral surface 36 a of the protrusion 36 and the outer peripheral surface 18 d of the press contact protrusion 18. As a result, the lid 13 can be easily attached to the tank body 27.

また、蓋本体２１の全周に亘って突出部３６を形成したが、断続的に形成してもよい。突出部３６を断続的に形成した場合でも、上記開口部１１の開放方向に対して垂直な方向への上記蓋体１３の位置ずれを防止できる。   Moreover, although the protrusion part 36 was formed over the perimeter of the lid | cover main body 21, you may form intermittently. Even when the protrusions 36 are formed intermittently, displacement of the lid 13 in the direction perpendicular to the opening direction of the opening 11 can be prevented.

（実施形態５）
図８は、本発明の実施形態５に係る樹脂溶着体としてのタンク２５を示す。この実施形態５では、上記外層部材１７に上記切欠部２９が形成されておらず、上記内層部材１５にフランジ部３１が突設されていない。また、上記外層部材１７の内周面１７ｃと上記圧接突部１８の内周面１８ｅとが段差なく連続している。 (Embodiment 5)
FIG. 8 shows a tank 25 as a resin welded body according to Embodiment 5 of the present invention. In the fifth embodiment, the notched portion 29 is not formed in the outer layer member 17, and the flange portion 31 is not projected from the inner layer member 15. Further, the inner peripheral surface 17c of the outer layer member 17 and the inner peripheral surface 18e of the press contact protrusion 18 are continuous without a step.

また、上記蓋本体２１の基端部２１ｂに段差部２６が形成されておらず、該基端部２１ｂの上記圧接突部１８との圧接箇所よりも外側には、環状突出部３７が全周に亘って突設され、該突出部３７の突出端面３７ａが上記外層部材１７の開放側端面１７ｂに当接している。これにより、蓋体１３を上記開口部１１の開放方向（図８における上下方向）に位置決めできる。したがって、溶着不足を防止できるとともに、レーザ光Ｌにより溶融する樹脂の量を多くなり過ぎないように調整できる。また、蓋体１３の上記開口部１１の開放方向への位置決めが、蓋本体２１と外層部材１７の２部材のみにより行われるので、施蓋部２３及び内層部材１５の寸法に若干誤差が生じても、蓋体１３の上記開口部１１の開放方向への位置に影響しない。したがって、施蓋部２３及び内層部材１５の製造を容易にできる。また、上記突出部３７の上記外層部材１７への当接により、溶融樹脂の蓋体１３外側への漏出を防止できる。さらに、上記突出部３７の内周面３７ｂと、上記圧接突部１８の外周面１８ｄとの間には、隙間Ｓ４が形成され、レーザ光Ｌの照射により溶融した樹脂をこの隙間Ｓ４に溜めることができる。したがって、溶融樹脂の蓋体１３外側への漏出をさらに確実に防止できる。   Further, the stepped portion 26 is not formed on the base end portion 21b of the lid main body 21, and the annular projecting portion 37 is arranged on the entire circumference outside the press contact portion of the base end portion 21b with the press contact protrusion 18. The projecting end surface 37 a of the projecting portion 37 is in contact with the open side end surface 17 b of the outer layer member 17. Thereby, the lid 13 can be positioned in the opening direction of the opening 11 (up and down direction in FIG. 8). Therefore, insufficient welding can be prevented and the amount of resin melted by the laser beam L can be adjusted so as not to increase too much. Further, since the positioning of the opening 13 in the opening direction of the lid 13 is performed by only the two members of the lid main body 21 and the outer layer member 17, there is a slight error in the dimensions of the lid portion 23 and the inner layer member 15. Also, the position of the opening 13 of the lid 13 in the opening direction is not affected. Accordingly, the lid portion 23 and the inner layer member 15 can be easily manufactured. Further, the contact of the protruding portion 37 with the outer layer member 17 can prevent the molten resin from leaking to the outside of the lid body 13. Further, a gap S4 is formed between the inner peripheral surface 37b of the protrusion 37 and the outer peripheral surface 18d of the press contact protrusion 18, and the resin melted by the irradiation with the laser light L is stored in the gap S4. Can do. Therefore, the leakage of the molten resin to the outside of the lid body 13 can be further reliably prevented.

また、上記施蓋部２３の基端側部２３ａと上記内層部材１５の開放側端面１５ａとが隙間Ｓ３をあけて離間している。この隙間Ｓ３には、例えばシリコーン樹脂からなるＯリング３９が配置されて、上記施蓋部２３の基端側部２３ａ、上記内層部材１５の開放側端面１５ａ、上記施蓋部２３の先端側部２３ｂの外周面２３ｃ、及び上記外層部材１７の圧接突部１８の内周面１８ｅに圧接している。これにより、タンク本体２７の中空部Ｓ１に貯蔵される流体の漏出が、Ｏリング３９とタンク本体２７との間、及びＯリング３９と蓋体１３との間において防止される。   Moreover, the base end side part 23a of the said cover part 23 and the open side end surface 15a of the said inner layer member 15 are spaced apart by the clearance gap S3. In this gap S3, an O-ring 39 made of, for example, a silicone resin is disposed, and the base end side portion 23a of the lid portion 23, the open side end surface 15a of the inner layer member 15, and the distal end side portion of the lid portion 23. The outer peripheral surface 23c of 23b and the inner peripheral surface 18e of the press contact protrusion 18 of the outer layer member 17 are pressed. Thereby, leakage of the fluid stored in the hollow portion S1 of the tank body 27 is prevented between the O-ring 39 and the tank body 27 and between the O-ring 39 and the lid body 13.

そのほかの構成は実施形態２と同様であるので、共通の役割を果たす構成箇所には同一の符号を付してその詳細な説明を省略する。   Since the other configuration is the same as that of the second embodiment, the same reference numerals are assigned to components that play a common role, and detailed description thereof is omitted.

したがって、本実施形態５によれば、実施形態２と同様に、溶着強度向上効果、及び材料コストの削減効果を得ることができる。   Therefore, according to the fifth embodiment, the effect of improving the welding strength and the effect of reducing the material cost can be obtained as in the second embodiment.

（実施形態６）
図９は、本発明の実施形態６に係る樹脂溶着体としてのタンク２５を示す。この実施形態６では、上記外層部材１７の切欠部２９の側面２９ｃと上記圧接突部１８の内周面１８ｅとが段差なく連続している。また、上記蓋本体２１の外周部２１ａの施蓋部２３側（開口部１１の反開放方向側）の面と上記施蓋部２３の基端側部２３ａの反蓋本体２１側の面とが面一をなしている。さらに、内層部材１５の開放側端面１５ａの外周側に、切欠部４１が全周に亘って形成され、当該内層部材１５の切欠部４１の側面４１ａ及び底面４１ｂと、上記外層部材１７の圧接突部１８の内周面１８ｅとで、凹環状のシール溝４３が全周に亘って形成されている。このシール溝４３内に、例えばシリコーン樹脂からなるＯリング４５が嵌入されて当該シール溝４３の両側面４３ａ（切欠部４１の側面４１ａと圧接突部１８の内周面１８ｅ）及び底面４３ｂ（切欠部４１の底面４１ｂ）と、上記蓋本体２１の外周部２１ａ及び上記施蓋部２３の基端側部２３ａとに圧接している。これにより、タンク本体２７の中空部Ｓ１に貯蔵される流体の漏出が、Ｏリング４５とタンク本体２７（シール溝４３）との間、及びＯリング４５と蓋体１３との間において防止される。 (Embodiment 6)
FIG. 9 shows a tank 25 as a resin welded body according to Embodiment 6 of the present invention. In the sixth embodiment, the side surface 29c of the cutout portion 29 of the outer layer member 17 and the inner peripheral surface 18e of the pressure contact projection 18 are continuous without a step. Further, the surface of the outer peripheral portion 21a of the lid body 21 on the side of the lid portion 23 (on the side opposite to the opening 11) and the surface of the base end side portion 23a of the lid portion 23 on the side of the anti-lid body 21 It is the same. Further, a notch 41 is formed on the outer peripheral side of the open end surface 15a of the inner layer member 15 over the entire circumference, and the side surface 41a and the bottom surface 41b of the notch 41 of the inner layer member 15 and the pressure contact of the outer layer member 17 A concave annular seal groove 43 is formed over the entire circumference with the inner peripheral surface 18 e of the portion 18. An O-ring 45 made of, for example, a silicone resin is fitted into the seal groove 43, and both side surfaces 43a of the seal groove 43 (the side surface 41a of the notch portion 41 and the inner peripheral surface 18e of the pressure contact projection 18) and the bottom surface 43b (notch). The bottom surface 41 b of the portion 41 is in pressure contact with the outer peripheral portion 21 a of the lid body 21 and the proximal end side portion 23 a of the lid portion 23. Thereby, leakage of the fluid stored in the hollow portion S1 of the tank body 27 is prevented between the O-ring 45 and the tank body 27 (seal groove 43) and between the O-ring 45 and the lid body 13. .

そのほかの構成は実施形態２と同様であるので、共通の役割を果たす構成箇所には同一の符号を付してその詳細な説明を省略する。   Since the other configuration is the same as that of the second embodiment, the same reference numerals are assigned to components that play a common role, and detailed description thereof is omitted.

したがって、本実施形態６によれば、実施形態２と同様に、施蓋部２３と内層部材１５との当接による流体の漏出防止効果、溶着強度向上効果、及び材料コストの削減効果を得ることができる。   Therefore, according to the sixth embodiment, similarly to the second embodiment, the fluid leakage prevention effect, the welding strength improvement effect, and the material cost reduction effect due to the contact between the lid portion 23 and the inner layer member 15 are obtained. Can do.

なお、上記実施形態１において、パイプ１を略Ｊ字状に形成したが、Ｈ字状等、他の形状にしてもよい。また、実施形態１におけるパイプ本体３の開口部１１周りの構成、及び蓋体１３の構成を実施形態２〜６のようなタンクに適用してもよい。   In addition, in the said Embodiment 1, although the pipe 1 was formed in substantially J shape, you may make it other shapes, such as H shape. Moreover, you may apply the structure around the opening part 11 of the pipe main body 3 in Embodiment 1, and the structure of the cover body 13 to a tank like Embodiment 2-6.

また、上記実施形態２〜６におけるタンク本体２７の開口部１１周りの構成、及び蓋体１３の構成をパイプに適用してもよい。   Moreover, you may apply the structure around the opening part 11 of the tank main body 27 in the said Embodiments 2-6, and the structure of the cover body 13 to a pipe.

本発明は、中空部を有し、該中空部を外部に開放する開口部が形成された樹脂製中空体と、該中空体の開口部を閉塞する樹脂製蓋体とを備え、上記中空体の開口部を上記蓋体で閉塞した状態で両者をレーザ光の照射により一体に溶着してなる樹脂溶着体として有用である。   The present invention includes a resin hollow body having a hollow portion and formed with an opening for opening the hollow portion to the outside, and a resin lid body for closing the opening of the hollow body, It is useful as a resin welded body in which both of the openings are closed with the lid and the two are integrally welded by laser light irradiation.

１ パイプ（樹脂溶着体）
３ パイプ本体（中空体）
１１ 開口部
１３ 蓋体
１５ 内層部材
１５ａ 開放側端面
１５ｂ 内周面（端面）
１７ 外層部材
１９ａ 突出端面
１９ｂ 内周面（端面）
２１ 蓋本体
２１ａ 外周部
２３ 施蓋部
２３ａ 基端側部
２３ｂ 先端側部
２３ｃ 外周面
２５ タンク（樹脂溶着体）
２７ タンク本体（中空体）
Ｓ１ 中空部
Ｌ レーザ光 1 Pipe (resin welded body)
3 Pipe body (hollow body)
11 opening
13 Lid
15 Inner layer member
15a Open end face 15b Inner peripheral face (end face)
17 Outer layer member
19a Projecting end face
19b Inner peripheral surface (end surface)
21 Lid body
21a outer periphery
23 Cover part
23a Base end side
23b Tip side
23c Outer peripheral surface
25 Tank (resin welded body)
27 Tank body (hollow body)
S1 hollow part
L Laser light

Claims (2)

中空部(S1)を有し、該中空部(S1)を外部に開放する開口部(11)が形成された樹脂製中空体(3,27)と、該中空体(3,27)の開口部(11)を閉塞する樹脂製蓋体(13)とを備え、上記中空体(3,27)の開口部(11)を上記蓋体(13)で閉塞した状態で両者をレーザ光(L)の照射により一体に溶着してなる樹脂溶着体(1,25)であって、
上記中空体(3,27)は、内層部材(15)と、該内層部材(15)の外面に一体に設けられた外層部材(17)とを備え、
上記蓋体(13)は、蓋本体(21)と、該蓋本体(21)の外周部(21a)を除く領域に一体に設けられ上記中空体(3,27)の開口部(11)を閉塞する施蓋部(23)とを備え、
上記外層部材(17)は、レーザ光(L)に対して吸収性を有する第１の樹脂からなり、上記蓋本体(21)は、レーザ光(L)に対して透過性を有する第２の樹脂からなり、上記内層部材(15)及び施蓋部(23)のみが共に、所定の流体に耐えうる耐薬品性を有する第３の樹脂からなり、
上記蓋体(13)の施蓋部(23)で上記中空体(3,27)の開口部(11)を閉塞した状態で、上記施蓋部(23)と上記内層部材(15)とが開口部(11)の全周に亘って当接し、かつ上記蓋本体(21)の外周部(21a)と上記外層部材(17)とがレーザ光(L)の照射により一体に溶着されていることを特徴とする樹脂溶着体。 Resin hollow body (3, 27) having a hollow portion (S1) and having an opening (11) that opens the hollow portion (S1) to the outside, and the opening of the hollow body (3, 27) A lid (13) made of resin that closes the part (11), and in the state that the opening (11) of the hollow body (3, 27) is closed by the lid (13), both of them are laser light (L ) Resin welded body (1,25) integrally welded by irradiation,
The hollow body (3, 27) includes an inner layer member (15) and an outer layer member (17) integrally provided on the outer surface of the inner layer member (15),
The lid body (13) is provided integrally with a lid body (21) and a region excluding the outer peripheral portion (21a) of the lid body (21) and has an opening (11) of the hollow body (3, 27). A lid (23) for closing,
The outer layer member (17) is made of a first resin that absorbs the laser light (L), and the lid body (21) is a second resin that is transmissive to the laser light (L). Made of a resin, and only the inner layer member (15) and the lid (23) are both made of a third resin having chemical resistance capable of withstanding a predetermined fluid,
With the lid (23) of the lid (13) closing the opening (11) of the hollow body (3, 27), the lid (23) and the inner layer member (15) are The outer periphery (21a) of the lid main body (21) and the outer layer member (17) are integrally welded by irradiation with laser light (L). A resin welded body characterized by that. 請求項１に記載の樹脂溶着体において、
上記内層部材(15)は、上記中空体(3,27)の開口部(11)内周面を覆い、
上記施蓋部(23)は、その外周部が上記閉塞状態で開口部(11)よりも外側に延出する基端側部(23a)と、該基端側部(23a)に一体に連続し、上記開口部(11)における内層部材(15)に嵌合する先端側部(23b)とからなり、
上記施蓋部(23)の基端側部(23a)と、上記開口部(11)の開放方向に面する上記内層部材(15)の端面(19a,15a)とが開口部(11)の全周に亘って当接するとともに、上記施蓋部(23)の先端側部(23b)の外周面(23c)と上記開口部(11)の開放方向に沿う上記内層部材(15)の端面(19b,15b)とが開口部(11)の全周に亘って当接していることを特徴とする樹脂溶着体。 In the resin welded body according to claim 1,
The inner layer member (15) covers the inner peripheral surface of the opening (11) of the hollow body (3, 27),
The lid portion (23) has a base end side portion (23a) whose outer peripheral portion extends outside the opening portion (11) in the closed state, and the base end side portion (23a) is integrally connected to the base end side portion (23a). And the front end side portion (23b) fitted to the inner layer member (15) in the opening (11),
The base end side portion (23a) of the lid portion (23) and the end surfaces (19a, 15a) of the inner layer member (15) facing the opening direction of the opening portion (11) of the opening portion (11) The end surface of the inner layer member (15) along the opening direction of the outer peripheral surface (23c) of the tip end side portion (23b) of the lid portion (23) and the opening portion (11) while abutting over the entire circumference ( 19b, 15b) is in contact with the entire circumference of the opening (11).
JP2011111361A 2011-05-18 2011-05-18 Resin welded body Withdrawn JP2012240273A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017001318A (en) * 2015-06-11 2017-01-05 トヨタ紡織株式会社 Resin piping and manufacturing method for the same
FR3137318A1 (en) * 2022-06-30 2024-01-05 Hitachi Astemo France HOUSING ASSEMBLED BY DISCONTINUOUS LASER WELDING

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017001318A (en) * 2015-06-11 2017-01-05 トヨタ紡織株式会社 Resin piping and manufacturing method for the same
FR3137318A1 (en) * 2022-06-30 2024-01-05 Hitachi Astemo France HOUSING ASSEMBLED BY DISCONTINUOUS LASER WELDING

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