JP3748251B2 - Article on which molded article of thermoplastic resin is welded and method for producing the same - Google Patents

Article on which molded article of thermoplastic resin is welded and method for producing the same Download PDF

Info

Publication number
JP3748251B2
JP3748251B2 JP2002314548A JP2002314548A JP3748251B2 JP 3748251 B2 JP3748251 B2 JP 3748251B2 JP 2002314548 A JP2002314548 A JP 2002314548A JP 2002314548 A JP2002314548 A JP 2002314548A JP 3748251 B2 JP3748251 B2 JP 3748251B2
Authority
JP
Japan
Prior art keywords
joint
welded
flange
mounting
article
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP2002314548A
Other languages
Japanese (ja)
Other versions
JP2004148592A (en
Inventor
佳寛 秋山
雅彦 田代
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Honda Motor Co Ltd
Original Assignee
Honda Motor Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Honda Motor Co Ltd filed Critical Honda Motor Co Ltd
Priority to JP2002314548A priority Critical patent/JP3748251B2/en
Publication of JP2004148592A publication Critical patent/JP2004148592A/en
Application granted granted Critical
Publication of JP3748251B2 publication Critical patent/JP3748251B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • 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
    • B29C66/32—Measures for keeping the burr form under control; Avoiding burr formation; Shaping the burr
    • B29C66/322—Providing cavities in the joined article to collect the burr
    • 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
    • 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
    • B29C66/01—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
    • 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
    • B29C66/541—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 a substantially flat extra element being placed between and clamped by the joined hollow-preforms
    • B29C66/5414—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 a substantially flat extra element being placed between and clamped by the joined hollow-preforms said substantially flat extra element being rigid, e.g. a plate
    • 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
    • B29C66/543—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 more than two hollow-preforms to form said hollow articles
    • 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
    • B29C66/83221—Joining or pressing tools reciprocating along one axis cooperating reciprocating tools, each tool 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
    • 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
    • B29C65/06—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using friction, e.g. spin 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
    • B29C65/02—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
    • 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
    • B29C65/10—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by heating, with or without pressure using hot gases (e.g. combustion gases) or flames coming in contact with at least one of the parts to be joined
    • 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
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、熱可塑性樹脂の成形品である第１，第２部材が溶着されて形成された物品およびその物品の製造方法に関し、物品は、例えば、オイルに混入した異物を除去するためのオイルストレーナである。
【０００２】
【従来の技術】
従来、熱可塑性樹脂の成形品である２つの部材が溶着されて形成された物品として、例えば特許文献１に開示されたものがある。この物品では、熱可塑性樹脂からなる２つのケースを接合するために、両ケースの周縁部に全周に渡って成形されて互いに対面可能なフランジが溶着される。そのために、一方のケースのフランジには、熱風が流通する流通溝と、流通溝の両側で流通溝に沿って延びる１対のバリ逃がし溝が設けられ、他方のケースには、前記１対のバリ逃がし溝にそれぞれ対面する１対のバリ逃がし凹部が設けられる。そして、両フランジを加圧しつつ対面させた状態で、流通溝に熱風を流通させ、同時に両フランジに振動を与えることにより、両フランジが溶融されて接合される。
【０００３】
【特許文献１】
特許３１６９１５３号公報
【０００４】
【発明が解決しようとする課題】
ところで、溶着の場合、溶融した材料の拡散現象を促進して、溶着部での接合強度を高めるためには、加圧力を高めることが好ましい。そのため、前記従来技術のように、両ケースの周縁部の全周に渡ってフランジが形成されるときは、図１０（Ａ）に示されるように、溶着部ａで接合される接合部ｂ，ｃが形成された両フランジｄ，ｅに治具ｆ，ｇを当接させて加圧することが一般的である。
【０００５】
しかしながら、物品をボルトなどにより別の部材に取り付けるための取付部を、物品の周縁部に形成する必要がある場合には、取付部をフランジから外方に突出させて形成することになる。このようにすると、取付部はフランジの分だけ外方にさらに突出することになって、取付部を有する物品が大型化し、狭いスペースへの配置が困難になることがある。
【０００６】
そこで、取付部をフランジが欠如した部分から突出させるようにすれば、フランジがない分、取付部での突出量が小さくなって、物品を小型化することができる。しかしながら、図１０（Ｂ）に示されるように、一方のケースのフランジｄに治具ｆを当接させ、他方のケースの取付部ｈの取付面h1に治具ｍを当接させて加圧しようとすると、取付部ｈでの治具ｍとの当接面となる取付面h1が、図１０（Ａ）のフランジｅにおける治具ｇとの当接面e1よりも溶着部ａから離れて位置することがあり、その場合には、取付部ｈでは、治具ｍと溶着部ａとの間の、加圧力の方向での距離が大きくなって、治具ｍの加圧力が接合部ｋに伝達されにくくなり、接合強度が低下する。
【０００７】
そして、接合強度の低下を防止するために、加圧力を増加させると、物品の薄肉部で変形が生じ易くなる難点があるうえ、取付面h1の一部が治具ｍとの当接面になる場合には、該当接面と治具ｍが当接しない面との間で取付面h1の変形が生じて、物品を適正に取り付けることが困難になることがある。
【０００８】
本発明は、このような事情に鑑みてなされたものであり、請求項１，２記載の発明は、熱可塑性樹脂の成形品である第１部材および第２部材が溶着されて形成された物品であって、取付部が成形された部分における接合部での所要の接合強度が確保されると共に、物品自体または取付部の取付面の変形が防止または抑制された物品を提供することを目的とする。そして、請求項２記載の発明は、さらに、取付部の剛性を高めると共にバリの露出を防止することを目的とする。また、請求項３〜５記載の発明は、請求項１記載の物品の製造方法を提供することを目的とする。そして、請求項４，５記載の発明は、さらに、所要の接合強度の確保を容易にすることを目的とする。
【０００９】
【課題を解決するための手段および発明の効果】
請求項１記載の発明は、いずれも熱可塑性樹脂の成形品である第１部材および第２部材を備え、前記第１部材の第１周縁部および前記第２部材の第２周縁部に第１接合部および第２接合部がそれぞれ形成され、前記第１接合部と前記第２接合部とが溶着部で溶着された物品において、前記第２部材には、先端部に取付面を有する取付部が一体成形されており、前記第１部材および前記第２部材には、前記取付面に直交する方向である第１方向に面すると共に溶着時に前記第１接合部および前記第２接合部に加圧力を作用させる治具が当接し得る当接面が形成されていて、前記第２周縁部は、前記当接面を有するフランジと、該フランジが欠如した部分に形成されている前記取付部の基端部とからなり、該基端部の前記第２接合部は、前記第１方向から見て前記取付面と重なる位置にあり、前記基端部には、前記第１方向で前記取付面よりも前記溶着部に近い位置にある前記当接面を有する当接面形成部が形成されている物品である。
【００１０】
これにより、取付部では、加圧力が取付面のみに作用する場合に比べると、治具の加圧力が当接面形成部の当接面を通じて第２接合部に効果的に伝達されるので、第１，第２接合部の溶着部での接合強度が高められるうえ、取付面での治具の加圧が不要になるか、もしくは取付面での治具の加圧力を減少させることができる。また、取付面と基端部の接合部とが第１方向から見て重なるので、取付部が形成されたことによる物品の大型化が抑制される。
【００１１】
この結果、請求項１記載の発明によれば、次の効果が奏される。すなわち、第１部材の第１周縁部の第１接合部と第２部材の第２周縁部の第２接合部とが溶着部で溶着された物品において、第２部材には先端部に取付面を有する取付部が一体成形され、第１，第２部材には、取付面に直交する方向である第１方向に面すると共に溶着時に第１，第２接合部に加圧力を作用させる治具が当接し得る当接面が形成されていて、第２部材の周縁部は、当接面を有するフランジと、フランジが欠如した部分に形成されている取付部の基端部とからなり、基端部には、第１方向で取付面よりも溶着部に近い位置に当接面を有する当接面形成部が形成されていることにより、溶着部での所要の接合強度が確保されて、しかも物品自体または取付面での変形が防止または大幅に抑制される。しかも、基端部の第２接合部は、第１方向から見て取付面と重なる位置に形成されていることにより、取付部が形成された物品の大型化が抑制されて、狭いスペースへの物品の配置が可能になる。
【００１２】
請求項２記載の発明は、請求項１記載の物品において、前記当接面形成部は、前記基端部から突出する凸部であり、前記第２周縁部の少なくとも前記基端部には、前記第２接合部よりも外側にバリトラップ溝が形成されており、前記凸部は、前記バリトラップ溝の外側の側壁に一体成形されているものである。
【００１３】
これにより、凸部により基端部ひいては取付部が剛性が高められ、また溶着部でのバリは、バリトラップ溝に収容されて、基端部および凸部からはみ出すことが防止される。
【００１４】
この結果、請求項２記載の発明によれば、請求項１記載の発明の効果に加えて、次の効果が奏される。すなわち、当接面形成部が基端部から突出する凸部であることにより、取付部の剛性が高められるので、取付部を通じて物品の適正、かつ安定的な取付が可能になる。また、第２周縁部の少なくとも基端部には、第２接合部よりも外側にバリトラップ溝が形成されており、凸部は、バリトラップ溝の外側の側壁に一体成形されていることにより、溶着部のバリが基端部および凸部から外側にはみ出すことがないので、物品の外観性が向上する。
【００１５】
請求項３記載の発明は、いずれも熱可塑性樹脂の成形品である第１部材および第２部材を備え、前記第１部材の第１周縁部および前記第２部材の第２周縁部に第１接合部および第２接合部がそれぞれ形成され、前記第１接合部と前記第２接合部とが溶着部で溶着される物品の製造方法において、前記第２部材には先端部に取付面を有する取付部が一体成形されており、前記第１部材および前記第２部材には、前記取付面に直交する方向である第１方向に面すると共に治具が当接する第１当接面および第２当接面がそれぞれ形成されていて、前記第２周縁部は、前記第２当接面を有するフランジと、該フランジが欠如した部分に形成されている前記取付部の基端部とからなり、該基端部の前記第２接合部は、前記第１方向から見て前記取付面と重なる位置に形成されており、前記基端部には、前記第１方向で前記取付面よりも前記溶着部に近い位置にある前記第２当接面を有する当接面形成部が形成されており、前記治具は、前記第１当接面および前記第２当接面に当接して、いずれも端面を含む部分が溶融状態とされた前記第１接合部および前記第２接合部に加圧力を作用させることにより、前記第１接合部と前記第２接合部とが溶着される物品の製造方法である。
【００１６】
これにより、取付部では、加圧力が取付面のみに作用する場合に比べると、治具の加圧力が当接面形成部の第２当接面を通じて第２接合部に効果的に伝達されるので、第１，第２接合部の溶着部での接合強度が高められるうえ、取付面での治具の加圧が不要になるか、もしくは取付面での治具の加圧力を減少させることができる。また、取付面と基端部の第２接合部とが第１方向から見て重なるので、取付部が形成されたことによる物品の大型化が抑制される。
【００１７】
この結果、請求項３記載の発明によれば、次の効果が奏される。すなわち、第１部材の第１周縁部の第１接合部と第２部材の第２周縁部の第２接合部とが溶着部で溶着される物品の製造方法において、第２部材には先端部に取付面を有する取付部が一体成形され、第１，第２部材には、取付面に直交する方向である第１方向に面する第１，第２当接面がそれぞれ形成されていて、第２周縁部は、当接面を有するフランジと、フランジが欠如した部分に形成されている取付部の基端部とからなり、基端部には、第１方向で取付面よりも溶着部に近い位置に第２当接面を有する当接面形成部が形成されており、治具は、第１当接面および第２当接面に当接して、いずれも端面を含む部分が溶融状態とされた第１接合部および第２接合部に加圧力を作用させて、第１接合部と第２接合部とが溶着されることにより、溶着部での所要の接合強度が確保されて、しかも物品自体または取付面の変形が防止または大幅に抑制された物品を製造することができる。そのうえ、基端部の第２接合部は、第１方向から見て取付面と重なる位置に形成されていることにより、取付部が形成された物品であって、大型化が抑制されて、狭いスペースへの配置が可能な物品を製造することができる。
【００１８】
請求項４記載の発明は、請求項３記載の物品の製造方法において、溶着開始直前において、前記基端部の前記第２接合部の端面と、前記基端部の前記第２接合部に溶着される前記第１接合部の端面との加圧方向での間隔は、前記フランジの前記第２接合部の端面と、前記フランジの前記第２接合部に溶着される前記第１接合部の端面との加圧方向での間隔よりも小さいものである。
【００１９】
これにより、第１接合部と基端部の第２接合部との間では、加圧方向での溶着範囲が大きくなる。
この結果、請求項４記載の発明によれば、請求項３記載の発明の効果に加えて、次の効果が奏される。すなわち、溶着開始直前において、基端部の第２接合部の端面と第１接合部の端面との加圧方向での間隔は、フランジの第２接合部の端面と第１接合部の端面との加圧方向での間隔よりも小さいことにより、第１接合部と基端部の第２接合部との溶着部の形成範囲が大きくなるので、取付部の第２接合部での接合強度の確保が容易になり、さらに接合強度が一層高められる。
【００２０】
請求項５記載の発明は、請求項３または請求項４記載の物品の製造方法において、溶着開始直前において、前記基端部の前記第２接合部の端面および前記基端部の前記第２接合部に溶着される前記第１接合部の端面の少なくとも一方の端面の幅は、前記フランジの前記第２接合部の端面および前記フランジの前記第２接合部に溶着される前記第１接合部の端面の幅よりも狭いものである。
【００２１】
これにより、第１接合部と基端部の第２接合部との間での接合圧力が、第１接合部とフランジの第２接合部との間の接合圧力に比べて高くなるので、第１接合部と基端部の第２接合部と溶着部での拡散現象がより促進される。
【００２２】
この結果、請求項５記載の発明によれば、引用された請求項記載の発明の効果に加えて、次の効果が奏される。すなわち、溶着開始直前において、基端部の第２接合部の端面およびその第２接合部に溶着される第１接合部の端面の少なくとも一方の端面の幅は、フランジの第２接合部の端面および該第２接合部に溶着される第１接合部の端面の幅よりも狭いことにより、第１接合部と基端部の第２接合部と溶着部での拡散現象がより促進されるので、取付部の第２接合部での接合強度の確保が容易になり、しかも接合強度が一層高められる。
【００２３】
【発明の実施の形態】
以下、本発明の実施例を図１ないし図９を参照して説明する。
図１を参照すると、本発明に係る物品が適用されたオイルストレーナＳは、車両に搭載される内燃機関のオイルパン１内に配置される。オイルパン１は、コンロッド５を介してクランク軸６と連結されるピストン４が嵌合されたシリンダブロック３の下端部に結合されたロアブロック２の下端部に、多数のボルトにより結合される。そして、シリンダブロック３とロアブロック２とに跨って、クランク軸６を回転軸とするトロコイドポンプからなるオイルポンプ７が取り付けられる。
【００２４】
オイルポンプ７は、その上部で、クランク軸６の軸方向でのシリンダブロック３の一方側の端部壁3aに複数のボルトにより結合され、その下部で、前記軸方向でのロアブロック２の一方側の端部壁2aに複数のボルトにより結合される。オイルポンプ７のポンプボディ7aには、ポンプ室に連通する吸入ポート7cが形成された吸入部7bおよび前記ポンプ室に連通する吐出ポート7dが形成された吐出部が形成される。オイルストレーナＳは、後述する取付部30の平面状の取付面33が吸入部7bの端部に形成された取付部7eの平面状の取付面7e1に面接触した状態で、オイルポンプ７に取り付けられる。
【００２５】
図２〜図４を参照すると、オイルストレーナＳは、第１部材としての第１ケース10と第２部材としての第２ケース20と濾過部材40とを備え、第１，第２ケース10，20が、それぞれの周縁部である第１周縁部C1および第２周縁部C2で相互に溶着されて形成される。そして、両ケース10，20により形成される中空部50に、オイルに混入した異物を除くための網状の濾過部材40が配置されている。
【００２６】
熱可塑性樹脂、例えばポリアミドにより一体成形された成形品である第１ケース10には、第２ケース20により覆われる開口の開口縁である第１周縁部C1を構成する第１フランジ11と、取付面33に直交する方向である第１方向A1に突出して形成されて先端にオイルの入口12aが形成される筒状の流入部12と、第１方向A1で後述する第２凸部28と対面する位置において第１フランジ11から突出する舌状の第１凸部18とが、一体成形されている。なお、第１方向A1は、この実施例では両ケース10，20を溶着するための第１，第２治具61，62がそれぞれ第１，第２ケース10，20に加える加圧力の方向ＡＦに平行な方向（以下、加圧方向という。）でもある。
【００２７】
第１ケース10の前記開口を全周に渡って囲む環状の第１フランジ11は、第１フランジ11の全周に渡って形成されると共に第２ケース20の第２対向面23と第１方向A1で対面する第１対向面13を有する。第１対向面13には、その全周に渡って第１方向A1で第２対向面23に向かって突出して形成されると共に溶着部Ｍで第２接合部24に溶着されている１条の環状の突条からなる第１接合部14が形成される。なお、図面では、説明の便宜上、溶着部Ｍを第１，第２ケース10，20および濾過部材40とは異なるハッチングで示している。
【００２８】
さらに、第１対向面13には、第１接合部14の外側および内側で、第１接合部14に沿って全周に渡って延びる環状溝からなる１条の外側バリトラップ溝15および１条の内側バリトラップ溝16がそれぞれ形成される。また、第１フランジ11において、第１方向A1で第１対向面13とは反対側の面には、第１ケース10と第２ケース20との溶着時に、第１接合部14に加圧方向での加圧力を作用させるための第１治具61が当接する当接面17が、第１方向A1に面して形成されている。
【００２９】
第１フランジ11の一部に形成された第１凸部18は、第１接合部14の外側に位置するように、外側バリトラップ溝15の外側の側壁15aに一体成形されている。第１凸部18は、第１方向A1で第２凸部28の端面28aと対面する対向面でもある端面18aと、第１方向A1で第２ケース20および端面18aとは反対側の面に、溶着時に第１治具61が当接する当接面18bとを有する。それゆえ、第１凸部18は当接面形成部である。第１方向A1に面する当接面18bは、当接面17と同一平面上または当接面17を含む平面の近傍にあり、また端面18aには凹部18cが形成されている。
【００３０】
熱可塑性樹脂、例えばポリアミドにより一体成形された成形品である第２ケース20には、第１ケース10により覆われる開口の開口縁である第２周縁部C2と、第１方向A1に突出して形成されて先端部に取付フランジ32を有する取付部30と、取付部30から突出する舌状の第２凸部28とが、一体成形されている。
【００３１】
オイルポンプ７の取付部7e（図１参照）に取り付けられる取付フランジ32に形成された取付面33には、濾過部材40を通過して清浄になったオイルがオイルストレーナＳから流出するための出口22aが開口する。それゆえ、取付部30はオイルストレーナＳの流出部22を兼ねる。また、取付フランジ32には、締結部材としての、取付部7eに設けられた１対の植え込みボルト８（図１参照）が挿通される１対の貫通孔34が、出口22aを挟んで設けられる。各植え込みボルト８は、各貫通孔34に圧入された金属製のブッシュ35の内側を通る。
【００３２】
第２ケース20の前記開口を全周に渡って囲む環状の第２周縁部C2は、取付部30を除いて第１フランジ11と対面する第２フランジ21と、第２フランジ21が欠如した部分に形成されて、第２フランジ21と連続すると共に第１フランジ11と対面する取付部30の基端部31とからなる。第２フランジ21および基端部31にそれぞれ形成されるフランジ側第２対向面23fおよび取付部側第２対向面23tは、互いに連続しており、全体として第２周縁部C2の全周に渡って形成される第２対向面23を構成する。
【００３３】
第２対向面23には、その全周に渡って第１方向A1で第１接合部14に対向して突出して形成されると共に溶着部Ｍで第１接合部14に溶着される１条の環状の突条からなる第２接合部24が形成される。そして、第２接合部24は、フランジ側第２対向面23fおよび取付部側第２対向面23ｔにそれぞれ形成されるフランジ側第２接合部24fおよび取付部側第２接合部24ｔとからなる。このうち、図２（Ａ），図２（Ｃ），図４から判るように、取付部側第２接合部24tは、その殆どの部分で、第１方向A1から見て取付面33と重なる位置に形成されている。
【００３４】
さらに、第２対向面23には、第２接合部24の外側で、第２接合部24に沿って第２対向面23の全周に延びる環状溝からなる１条の外側バリトラップ溝25が形成され、第２接合部24の内側で、濾過部材40を第１ケース10に保持するための段部からなる保持部26が形成される。また、第２フランジ21において、第１方向A1でフランジ側第２対向面23fとは反対側の面には、溶着時に加圧力を第２接合部24に作用させるための第２治具62が当接する当接面27が、第１方向A1に面して形成されている。
【００３５】
溶着部Ｍおよび中間位置から、第１方向A1で第２フランジ21の当接面27よりも離れた位置にある取付面33においては、少なくとも取付部側第２接合部24tと取付部30とが第１方向A1から見て重なる部分が、第２治具62が当接する当接面38とされる。ここで、前記中間位置とは、第１対向面13と第２対向面23との第１方向A1での間の中央点の軌跡で定まる位置であり、この実施例では、外側バリトラップ溝15および外側バリトラップ溝25のそれぞれの側壁15a，25aにおける第１対向面13と第２対向面23との第１方向A1での間の中間位置にある仮想平面Ｈ（図３，図４参照）の位置である。
【００３６】
基端部31の一部に突出して形成された第２凸部28は、取付部側第２接合部24tの外側に位置するように、外側バリトラップ溝25の外側の側壁25aに一体成形されている。図２（Ａ）を参照すると、第２凸部28は、第１方向A1から見て、基端部31の、第２フランジ21の両端部21a，21bを結ぶ仮想直線Ｌから最も離れた部位を含む位置にあり、また植え込みボルト８（図１参照）を利用してオイルストレーナＳをオイルポンプ７に締結する際の締付け工具と干渉しない位置にある。
【００３７】
そして、第２凸部28は、第１方向A1で第１凸部18と対面する対向面でもある端面28aと、第１方向A1で第１ケース10および端面28aとは反対側に、溶着時に第２治具62が当接する当接面28bとを有する。それゆえ、第２凸部28は当接面形成部である。第１方向A1に面する当接面28bは、第２フランジ21の当接面27と同一平面上または当接面27を含む平面の近傍にあり、第１方向A1で取付面33よりも溶着部Ｍおよび前記中間位置に近い位置にあるので、第２治具62により加えられる加圧力が、第２治具62が取付面33に当接する場合に比べて、第２凸部28および基端部31を通じて取付部側第２接合部24tに確実に伝達される。また、第２凸部28およびその当接面28bは、第１方向A1から見て取付面33さらには取付部30と重ならない位置にある。
【００３８】
このように、第１フランジ11の当接面17および第１凸部18の当接面18bは、第１ケース10に形成された第１当接面であり、第２フランジ21の当接面27、第２凸部28の当接面28bおよび取付面33の当接面38は、第２ケース20に形成された第２当接面である。そして、第１ケース10に形成された当接面17，18bと、当接面38を除いて第２ケース20に形成された当接面27，28bとは、溶着時に加圧力をほぼ均等に溶着部Ｍに伝達するように、溶着部Ｍまたは前記中間位置からほぼ等距離にある。
【００３９】
図３，図４を参照すると、熱可塑性樹脂、例えばポリアミドの成形品である濾過部材40は、第２ケース20の保持部26に保持される第３周縁部C3を構成する第３フランジ41を有し、第３フランジ41において第１対向面13と対向する第３対向面43には、第３対向面43の全周に渡って延びて第１対向面13に向かって突出すると共に溶着部Ｍで第１接合部14に溶着される１条の環状の突条からなる第３接合部44が形成される。また、第３対向面43には、第３接合部44の内側で、第３接合部44に沿って第３対向面43の全周に渡って延びる環状溝からなる１条のバリトラップ溝45が形成される。
【００４０】
第３フランジ41が保持部26に保持された状態で、第３接合部44の外周面と第２接合部24の内周面とは接触する。そして、第３対向面43は、第２フランジ21に形成された保持部26に保持される第３フランジ41の部分に形成されるフランジ側第３対向面43fと、基端部31に形成された保持部26に保持される第３フランジ41の部分に形成される取付部側第３対向面43tとからなり、両第３対向面43f，43tは互いに連続している。また、第３接合部44は、フランジ側第３対向面43fに形成されたフランジ側第３接合部44fと、取付部側第３対向面43tに形成された取付部側第３接合部44tとからなる。
【００４１】
なお、各バリトラップ溝15，16，25，45には、溶着時に第１接合部14，第２接合部24および第３接合部44で発生したバリＦが収容されるので、バリＦが第１，第２周縁部c1，C2から、オイルストレーナＳの外部および中空部50に露出することがない。
【００４２】
このようにして、図３，図４に示されるように、オイルストレーナＳにおいて、中空部50は、第１，第２周縁部C1，C2に保持された濾過部材40により、オイルの流れに対して濾過部材40よりも上流に位置して入口12a（図２参照）に連なる上流側室50aと、濾過部材40よりも下流に位置して出口22a（図２参照）に連なる下流側室50bとに区画される。
【００４３】
図１を併せて参照すると、オイルストレーナＳは、オイルポンプ７の取付部7eに設けられた１対の植え込みボルト８が取付フランジ32の１対の貫通孔34にそれぞれ挿通された後、各植え込みボルト８に螺合されるナット９により取付フランジ32が締め付けられることにより、互いに平行な平面状の第１，第２対向面13，23が水平面に対して傾斜した状態で、オイルポンプ７に締結される。このとき、取付面33に出口22aを囲んで形成された円環状の装着溝36に装着された弾性体からなる円環状のシール部材37（図２（Ｂ）参照）が、取付面7e1に当接して弾性変形し、これにより、吸入ポート7cと出口22aとが液密に密封された状態で接続される。それゆえ、両取付面7e1，33はシール面でもある。
【００４４】
オイルポンプ７にオイルストレーナＳが取り付けられた状態で、内燃機関が運転されて、クランク軸６の回転によりオイルポンプ７が作動すると、オイルパン１に貯留されたオイルは、オイルストレーナＳを介してオイルポンプ７により汲み上げられる。具体的には、オイルストレーナＳの入口12aから下流側室50aに流入したオイルは、濾過部材40を通って清浄にされて下流側室50bに至り、さらに出口22aから流出して吸入ポート7cに流入する。吸入ポート7cを通って前記ポンプ室に流入したオイルは、該ポンプ室で高圧にされた後、吐出ポート7dに吐出され、その後オイルフィルタを通り、シリンダブロック３に形成されたメインギャラリを経て各軸受や摺動部等の潤滑箇所に供給される。潤滑箇所を潤滑した後のオイルは、戻り油路やクランク室を経てオイルパン１に帰還する。
【００４５】
ところで、第１ケース10と第２ケース20とは熱板溶着法により溶着される。そのために、第１ケース10と、濾過部材40が保持部26に保持された第２ケース20とは、取付面33が水平になり、第１，第２対向面13，23が互いに平行になると共に水平面に対して傾斜した状態で、かつ第１，第２ケース10，20の当接面17，18b，27，28b，38にそれぞれ第１，第２治具61，62が接触した状態で、固定台に固定された第１治具61および移動方向に往復動可能な可動台に固定された第２治具62にそれぞれ固定される。このとき、離れた状態にある第１接合部14および第２接合部24は、第２治具62の移動方向（この実施例では加圧方向および第１方向A1と同じである。）で対向する位置を占めている。
【００４６】
この状態で、第１，第２，第３接合部14，24，44において、第１，第２，第３接合部14，24，44の端面である先端面14a，24a，44a（図５，図６参照）と溶着部Ｍを構成する部分とを含む溶融部分が、融点を超えて溶融状態になるまで、第１，第２，第３接合部14，24，44に接触する熱板（図示されず。）により加熱され、その後、該熱板が取り去られる。
【００４７】
そして、溶着開始直前のときの第１，第２，第３接合部14，24，44の状態が、図５，図６に示されている。溶着開始直前の第１，第２，第３接合部14，24，44において、取付部側第２接合部24tおよび取付部側第３接合部44tは、当接面27または当接面28bに対してフランジ側第２接合部24fよりも大きな突出量で、加圧方向または第１方向A1に突出している。一方、第１接合部14は、当接面17または当接面18bに対して全周に渡って同じ突出量で加圧方向または第１方向A1に突出している。そして、取付部側第２接合部24tの先端面24aおよび取付部側第３接合部44tの先端面44aとは同一平面上にある。
【００４８】
それゆえ、取付部側第２接合部24tの先端面24aおよび取付部側第３接合部44tの先端面44aと、取付部側第２接合部24tおよび取付部側第３接合部44tに溶着される第１接合部14の先端面14aとの加圧方向での間隔Dtは、フランジ側第２接合部24fの先端面24aおよびフランジ側第３接合部44fの先端面44aと、フランジ側第２接合部24fおよびフランジ側第３接合部44fに溶着される第１接合部14の先端面14aとの加圧方向での間隔Dfよりも小さく設定される。
【００４９】
また、溶着開始直前において、取付部側第２接合部24tの先端面24aの幅W2tは、フランジ側第２接合部24fの先端面24aの幅W2f、そしてフランジ側第２接合部24ｆに溶着される第１接合部14の先端面14aの幅W1fおよび取付側第２接合部24tに溶着される第１接合部14の先端面14aの幅W1tの幅よりも狭く設定される。なお、取付部側第３接合部44tの先端面44aおよびフランジ側第３接合部44fの先端面44aのそれぞれの幅W3は等しく設定される。
【００５０】
その後、第２治具62が、第１接合部14の先端面14aおよび第３接合部44の先端面44と第２接合部24の先端面24aとが加圧方向で対向する状態で、濾過部材40が保持された第２ケース20を第１ケース10に相対的に近づける移動方向に、第２ケース20を保持した状態で移動して、第１接合部14と第２接合部24および濾過部材40とを当接させ、さらに両ケース10，20が相対的に近づくように第２ケース20と共に移動することにより、第１治具61および第２治具62が、それぞれ第１ケース10の当接面17，18bおよび第２ケース20の当接面27，28b，38を加圧して、いずれも先端面14a，24a，44aを含む部分が溶融状態とされた第１，第２，第３接合部14，24，44に加圧方向での加圧力を作用させることにより、第１接合部14と第２接合部24および第３接合部44とが溶着されて、加圧方向または第１方向A1での所定範囲に渡って溶着部Ｍが形成される。
【００５１】
次に、前述のように構成された実施例の作用および効果について説明する。
熱可塑性樹脂の成形品である第１ケース10の第１フランジ11の第１接合部14と熱可塑性樹脂の成形品である第２ケース20の第２周縁部C2の第２接合部24とが溶着部Ｍで溶着されるオイルストレーナＳを製造するにあたり、第２ケース20には先端部に取付面33を有する取付部30が一体成形され、第１ケース10および第２ケース20には、取付面33に直交する方向である第１方向A1に面する当接面17，18bおよび当接面27，28b，38がそれぞれ形成されていて、第２周縁部C2は、当接面27を有する第２フランジ21と、第２フランジ21が欠如した部分に形成されている取付部30の基端部31とからなり、基端部31には、第１方向A1で取付面33よりも溶着部Ｍまたは前記中間位置に近い位置に当接面28bを有する第２凸部28が形成されており、第１，第２治具61，62は、第１ケース10の各当接面17，18bおよび第２ケース20の各当接面27，28b，38に当接して、いずれも先端面14a，24a，44aを含む部分が溶融状態とされた第１，第２接合部14，24および濾過部材40の第３接合部44に加圧力を作用させて、第１接合部14と第２接合部24とが溶着され、さらに第１接合部14と第３接合部44とが溶着される。これにより、取付部30では、加圧力が取付面33のみに作用する場合に比べると、第２治具62の加圧力が第２凸部28の当接面28bを通じて第２接合部24に効果的に伝達されるので、第１，第２接合部14，24の溶着部Ｍでの接合強度が高められて、所要の接合強度が確保され、しかも取付面33の当接面38での第２治具62の加圧力を減少させることができるので、オイルストレーナＳ自体または取付面33での変形が防止または大幅に抑制されたオイルストレーナＳを製造することができる。そのうえ、基端部31の第２接合部24tは、第１方向A1から見て取付面33と重なる位置に形成されていることにより、取付部30が形成されたオイルストレーナＳであって、大型化が抑制されて、狭いスペースへの配置が可能なオイルストレーナＳを製造することができる。
【００５２】
また、オイルストレーナＳがオイルポンプ７に取り付けられるとき、出口22aとオイルポンプ７の吸入ポート7cとが液密状態で接続されて、両取付面7e1，33がシール面を構成することにより、シール面である取付面33の変形が前述のように防止または抑制されるので、オイルストレーナＳとオイルポンプ７との接続部で、高いシール性を確保することができる。
【００５３】
第２凸部28は、第１方向A1から見て、基端部31の、第２フランジ21の両端部21a，21bを結ぶ仮想直線Ｌから最も離れた部位を含む位置にあることにより、取付部側第２接合部24tにおいて、第２フランジ21の当接面27から最も離れているために、最も接合強度が低下する可能性がある部分に、第２凸部28を通じて第２治具62の加圧力を作用させることができるので、取付部側第２接合部24tと第１接合部14との接合強度を全体的に高めることができる。
【００５４】
第２凸部28が基端部31から突出して形成されることにより、取付部30の剛性が高められるので、取付部30を通じてオイルストレーナＳの適正、かつ安定的な取付が可能になる。また、第２周縁部C2の少なくとも基端部31には、取付部側第２接合部24tよりも外側に外側バリトラップ溝25が形成されており、第２凸部28は、外側バリトラップ溝25の外側の側壁25aに一体成形されていることにより、溶着部ＭのバリＦが基端部31および凸部28から外側にはみ出すことがないので、オイルストレーナＳの外観性が向上する。さらに、第１周縁部C1および第２周縁部C2には、第１接合部14および第２接合部24の外側に、両周縁部C1，C2の全周に渡って外側バリトラップ溝15，25が形成されていることにより、第１周縁部C1および第２周縁部C2の全周で、溶着部ＭのバリＦがオイルストレーナＳの外部に露出することがないので、この点でもオイルストレーナＳの外観性が向上する。
【００５５】
溶着開始直前において、取付部側第２接合部24tの先端面24aと該取付部側第２接合部24tに溶着される第１接合部14の先端面14aとの加圧方向での間隔Dtは、フランジ側第２接合部24fの先端面24aと該フランジ側第２接合部24fに溶着される第１接合部14の先端面14aとの加圧方向での間隔Dfよりも小さいことにより、第１接合部14と取付部側第２接合部24tとの溶着部Ｍの加圧方向での形成範囲が大きくなるので、取付部側第２接合部24tでの接合強度の確保が容易になり、しかも接合強度が一層高められる。
【００５６】
また、溶着開始直前において、取付部側第２接合部24tの先端面24aの幅W2tは、フランジ側第２接合部24fの先端面24aの幅W2fおよび該フランジ側第２接合部24に溶着される第１接合部14の先端面14aの幅W1fよりも狭いことにより、第１接合部14と取付部側第２接合部24tとの間での接合圧力が、第１接合部14とフランジ側第２接合部24fとの間の接合圧力に比べて高くなるので、第１接合部14と取付部側第２接合部24tとの間の溶着部Ｍでの拡散現象がより促進されて、この点でも、取付側第２接合部24tでの接合強度の確保が容易になり、しかも接合強度が一層高められる。
【００５７】
以下、前述した実施例の一部の構成を変更した実施例について、変更した構成に関して説明する。
第２ケース20に複数の取付部が形成されてもよく、また第１ケース10および第２ケース20にそれぞれ取付部が形成されてもよい。治具については、第１治具61が移動し、第２治具62が固定されていてもよく、さらに両治具61，62が移動するものであってもよい。
【００５８】
第１，第２凸部18，28は、図７に示されるように、凹部18c，28cが端面18a，28aではなく当接面18b，28b側に形成されたものであってもよく、また図８に示されるように、端面18a，28aおよび当接面18b，28b側に凹部が形成されないものであってもよい。さらに、第１，第２凸部18，28が形成されることにより、第１フランジ11の剛性または基端部31から先端部の取付フランジ32までの取付部30の剛性が不足する場合には、図４に二点鎖線で示されるように、当接面18bおよび当接面28bの一部と第１フランジ11の外周面および取付部30の外周面との間を連結するリブ19，29がそれぞれ設けられてもよい。
【００５９】
また、第１，第２凸部18，28の端面18a，28aを利用して、第１，第２ケース10，20の位置決め部を形成することもできる。例えば、図９に示されるように、第１凸部18の端面18aに嵌合凸部18dが形成され、第２凸部28の端面28aに嵌合凹部28dが形成されることにより、さらに、一般的には、第１，第２凸部18，28において、一方の凸部の端面に嵌合凸部が形成され、他方の凸部の端面に嵌合凹部が形成されることにより、溶着時に嵌合凸部が嵌合凹部に嵌合するようにできる。これにより、第１ケース10および第２ケース20の溶着時の位置決めをすることができて、溶着時の第１ケース10と第２ケース20との間の位置ずれが確実に防止される。
【００６０】
第１ケース10には、当接面17を有する第１フランジ11が第１周縁部C1の全周に形成されることから、第１凸部18がなくてもよい。前記実施例では、両ケース10，20において、１対で１組の第１，第２凸部18，28が形成されたが、両ケース10，20において、１対の複数の組の第１，第２凸部が形成されてもよい。
【００６１】
取付面33の全面が第２治具62との当接面であってもよい。また、取付部 30 と第２凸部 28 とにおいて、第２治具62が当接する第２凸部28のみで、取付部側第２接合部24tと第１接合部14との溶着部Ｍでの所要の接合強度が得られる場合には、取付面33を第２治具62が当接する当接面とする必要はない。そのため、この場合には取付面33での第２治具62による加圧が不要になるので、オイルストレーナＳ自体または取付面33を含む取付部30での変形が防止される。
【００６２】
溶着開始直前において、取付部側第２接合部24tに溶着される第１接合部14の先端面14aの幅W1tが、フランジ側第２接合部24fの先端面24aの幅W2fおよび該フランジ側第２接合部24fに溶着される第１接合部14の先端面14aの幅W1fよりも狭く設定されてもよい。この場合にも、第１接合部14と取付部側第２接合部24tとの間での接合圧力が、第１接合部14とフランジ側第２接合部24fとの間の接合圧力に比べて高くなるので、取付側第２接合部24tでの接合強度の確保が容易になり、しかも接合強度が一層高められる。
【００６３】
当接面形成部は、凸部ではなく、第１，第２治具61，62が当接可能な底面を有する凹部により構成されてもよい。
溶着は、熱板溶着法以外の溶着法、例えば振動溶着法、超音波溶着法、レーザー溶着法によって行われてもよい。
【００６４】
オイルストレーナＳが設けられる内燃機関は、前記実施例では車両に使用されるものであったが、鉛直方向を指向するクランク軸を備える船外機等の船舶推進装置に使用されるものであってもよい。さらに、オイルストレーナＳは、内燃機関以外の機器に設けられてもよい。
【００６５】
オイルストレーナＳは内燃機関のオイルパン１内に配置されるものであったが、内燃機関以外の機器に使用されるオイルストレーナであってもよい。また、部品は、オイルストレーナ以外の中空部を有する物品であってもよい。
【図面の簡単な説明】
【図１】本発明の物品の実施例であるオイルストレーナを備える内燃機関の概略の断面図である。
【図２】図１のオイルストレーナについて、（Ａ）は上平面図であり、（Ｂ）は側面図であり、（Ｃ）は下平面図である。
【図３】図２のＩＩＩ−ＩＩＩでの断面図である。
【図４】図２のＩＶ−ＩＶでの断面図である。
【図５】溶着開始直前の状態を示す図３に対応する要部拡大断面図である。
【図６】溶着開始直前の状態を示す図４に対応する要部拡大断面図である。
【図７】凸部の第１変形例を示す図３に対応する要部断面図である。
【図８】凸部の第２変形例を示す図３に対応する要部断面図である。
【図９】凸部の第３変形例を示す図３に対応する要部断面図である。
【図１０】従来技術を説明するための模式的な断面図であり、（Ａ）は、物品を構成する２つのケースのフランジが治具により加圧される様子を示し、（Ｂ）は、一方のケースのフランジが、他方のケースの取付部がそれぞれ治具により加圧される様子を示す。
【符号の説明】
１…オイルパン、２…ロアブロック、３…シリンダブロック、４…ピストン、５…コンロッド、６…クランク軸、７…オイルポンプ、８…植え込みボルト、９…ナット、10…第１ケース、11…第１フランジ、12…流入部、13…第１対向面、14…第１接合部、15，16…バリトラップ溝、17…当接面、18…第１凸部、19…リブ、
20…第２ケース、21…第２フランジ、22…流出部、23…第２対向面、24…第２接合部、25…バリトラップ溝、26…保持部、27…当接面、28…第２凸部、29…リブ、
30…取付部、31…基端部、32…取付フランジ、33…取付面、34…貫通孔、35…ブッシュ、36…装着溝、37…シール部材、38…当接面、
40…濾過部材、41…第３フランジ、43…第３対向面、44…第３接合部、45…バリトラップ溝、、
50…中空部、61，62…治具、
Ｓ…オイルストレーナ、A1…第１方向、ＡＦ…加圧力の方向、C1，C2，C3…周縁部、Ｍ…溶着部、Ｈ…仮想平面、Ｌ…仮想直線、Ｆ…バリ、Df，Dt…間隔、W1f，W1t，W2f，W2t，W3…幅。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an article formed by welding first and second members, which are molded articles of a thermoplastic resin, and a method of manufacturing the article. The article is, for example, oil for removing foreign matters mixed in oil It is a strainer.
[0002]
[Prior art]
Conventionally, as an article formed by welding two members which are molded articles of a thermoplastic resin, there is one disclosed in Patent Document 1, for example. In this article, in order to join two cases made of thermoplastic resin, flanges that are molded over the entire periphery of both cases and face each other are welded. For this purpose, the flange of one case is provided with a flow groove through which hot air flows and a pair of burr relief grooves extending along the flow groove on both sides of the flow groove, and the other case has the pair of burr escape grooves. A pair of burr escape recesses are provided which respectively face the burr escape grooves. Then, in a state where both flanges are pressed and faced, hot air is circulated through the flow grooves, and vibrations are applied to both flanges at the same time, whereby both flanges are melted and joined.
[0003]
[Patent Document 1]
Japanese Patent No. 3169153
[0004]
[Problems to be solved by the invention]
By the way, in the case of welding, it is preferable to increase the pressure in order to promote the diffusion phenomenon of the molten material and increase the bonding strength at the welded portion. Therefore, when the flange is formed over the entire circumference of the peripheral portion of both cases as in the prior art, as shown in FIG. 10 (A), as shown in FIG. In general, the jigs f and g are brought into contact with the flanges d and e on which c is formed and pressed.
[0005]
However, when it is necessary to form an attachment portion for attaching the article to another member with a bolt or the like on the peripheral portion of the article, the attachment portion is formed to protrude outward from the flange. If it does in this way, an attaching part will protrude further outward by the part of a flange, the article which has an attaching part will enlarge, and arrangement to a narrow space may become difficult.
[0006]
Therefore, if the attachment portion is protruded from the portion lacking the flange, the amount of protrusion at the attachment portion is reduced by the amount of the flange, and the article can be downsized. However, as shown in FIG. 10 (B), the jig f is brought into contact with the flange d of one case, and the jig m is brought into contact with the mounting surface h1 of the mounting portion h of the other case. If it tries to do, the attachment surface h1 used as the contact surface with the jig | tool m in the attachment part h will leave | separate from the welding part a rather than the contact surface e1 with the jig | tool g in the flange e of FIG. 10 (A). In this case, in the attachment portion h, the distance between the jig m and the welded portion a in the direction of the applied pressure is increased, and the applied pressure of the jig m is reduced to the joint k. It becomes difficult to transmit to the joint, and the bonding strength is reduced.
[0007]
And, in order to prevent a decrease in the bonding strength, if the applied pressure is increased, there is a difficulty that deformation is likely to occur in the thin part of the article, and a part of the mounting surface h1 is in contact with the jig m. In this case, the attachment surface h1 may be deformed between the contact surface and the surface on which the jig m does not come into contact, and it may be difficult to attach the article properly.
[0008]
The present invention has been made in view of such circumstances, and the invention according to claims 1 and 2 is an article formed by welding a first member and a second member, which are molded products of a thermoplastic resin. An object of the present invention is to provide an article in which required joint strength at a joint portion in a portion where the attachment portion is formed is ensured, and deformation of the article itself or the attachment surface of the attachment portion is prevented or suppressed. To do. A second object of the present invention is to increase the rigidity of the mounting portion and prevent the exposure of burrs. In addition, an object of the invention described in claims 3 to 5 is to provide a method for manufacturing the article described in claim 1. Further, the inventions according to claims 4 and 5 further aim to make it easy to ensure the required bonding strength.
[0009]
[Means for Solving the Problems and Effects of the Invention]
The invention according to claim 1 includes a first member and a second member, both of which are molded products of a thermoplastic resin, and the first peripheral portion of the first member and the second peripheral portion of the second member are first. In an article in which a joint portion and a second joint portion are formed, and the first joint portion and the second joint portion are welded by a welded portion, the second member has a mounting portion having a mounting surface at a tip end portion. The first member and the second member face the first direction that is orthogonal to the mounting surface and are added to the first joint and the second joint during welding. An abutting surface on which a jig for applying pressure can abut is formed, and the second peripheral edge includes a flange having the abutting surface and an attachment portion formed on a portion lacking the flange. A base end portion, and the second joint portion of the base end portion includes the first end portion. There is a contact surface forming portion having the contact surface in a position that overlaps with the attachment surface as viewed from the direction, and at the base end portion is closer to the weld portion than the attachment surface in the first direction. It is an article that is formed.
[0010]
Thereby, compared with the case where the applied pressure acts only on the attachment surface, the applied pressure of the jig is effectively transmitted to the second joint through the contact surface of the contact surface forming portion. The joint strength at the welded portion of the first and second joints can be increased, and the pressurization of the jig on the mounting surface is not required, or the pressing force of the jig on the mounting surface can be reduced. . Moreover, since the attachment surface and the joint portion of the base end portion overlap each other when viewed from the first direction, the increase in size of the article due to the formation of the attachment portion is suppressed.
[0011]
As a result, according to the first aspect of the present invention, the following effects can be obtained. That is, in the article in which the first joint portion of the first peripheral edge portion of the first member and the second joint portion of the second peripheral edge portion of the second member are welded by the weld portion, the second member has a mounting surface on the tip portion. A jig that integrally molds the first and second members, faces the first direction perpendicular to the mounting surface, and applies pressure to the first and second joints during welding. The peripheral surface of the second member is composed of a flange having a contact surface and a base end portion of a mounting portion formed in a portion lacking the flange. In the end portion, a contact surface forming portion having a contact surface in a position closer to the weld portion than the mounting surface in the first direction is formed, thereby ensuring a required bonding strength at the weld portion, Moreover, deformation of the article itself or the mounting surface is prevented or greatly suppressed. In addition, since the second joint portion of the base end portion is formed at a position that overlaps the attachment surface when viewed from the first direction, an increase in size of the article on which the attachment portion is formed is suppressed, and a narrow space is formed. Placement of the article becomes possible.
[0012]
According to a second aspect of the present invention, in the article according to the first aspect, the contact surface forming portion is a convex portion protruding from the base end portion, and at least the base end portion of the second peripheral edge portion includes: A varitrap groove is formed on the outer side of the second joint portion, and the convex portion is integrally formed on the outer side wall of the varitrap groove.
[0013]
Thereby, the rigidity of the base end portion and hence the attachment portion is enhanced by the convex portion, and the burr at the welded portion is accommodated in the varitrap groove and is prevented from protruding from the base end portion and the convex portion.
[0014]
As a result, according to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the following effect is exhibited. That is, since the abutment surface forming portion is a convex portion protruding from the base end portion, the rigidity of the attachment portion is increased, so that the article can be appropriately and stably attached through the attachment portion. Further, at least the base end portion of the second peripheral edge portion is formed with a varitrap groove outside the second joint portion, and the convex portion is integrally formed on the outer side wall of the varitrap groove. Since the burrs of the welded portion do not protrude outward from the base end portion and the convex portion, the appearance of the article is improved.
[0015]
The invention described in claim 3 includes a first member and a second member, both of which are molded products of a thermoplastic resin, and the first peripheral portion of the first member and the second peripheral portion of the second member are first. In the method of manufacturing an article in which a joint portion and a second joint portion are formed, and the first joint portion and the second joint portion are welded at the weld portion, the second member has a mounting surface at a tip portion. A mounting portion is integrally formed, and the first member and the second member face the first direction, which is a direction orthogonal to the mounting surface, and the first contact surface and the second surface on which the jig contacts. Each of the contact surfaces is formed, and the second peripheral edge portion includes a flange having the second contact surface and a base end portion of the attachment portion formed in a portion lacking the flange, The second joint portion of the base end portion and the mounting surface when viewed from the first direction. The base end portion is formed with a contact surface forming portion having the second contact surface in a position closer to the weld portion than the mounting surface in the first direction. The jig contacts the first contact surface and the second contact surface, and both of the jigs are added to the first joint portion and the second joint portion in which the portions including the end surfaces are in a molten state. This is a method for manufacturing an article in which the first joint and the second joint are welded by applying pressure.
[0016]
Thereby, compared with the case where the applied pressure acts only on the attachment surface, the applied pressure of the jig is effectively transmitted to the second joint through the second contact surface of the contact surface forming portion. Therefore, the joint strength at the welded portion of the first and second joints can be increased, and the pressurization of the jig on the mounting surface becomes unnecessary, or the pressurizing force of the jig on the mounting surface is reduced. Can do. Moreover, since the attachment surface and the second joint portion of the base end portion overlap each other when viewed from the first direction, the increase in size of the article due to the formation of the attachment portion is suppressed.
[0017]
As a result, according to the third aspect of the present invention, the following effects are exhibited. That is, in the method for manufacturing an article in which the first joint portion of the first peripheral edge portion of the first member and the second joint portion of the second peripheral edge portion of the second member are welded by the weld portion, the second member has a tip portion. A mounting portion having a mounting surface is integrally formed, and the first and second members are respectively formed with first and second contact surfaces facing a first direction which is a direction orthogonal to the mounting surface. The second peripheral portion includes a flange having a contact surface and a base end portion of a mounting portion formed in a portion lacking the flange, and the base end portion has a welded portion in the first direction rather than the mounting surface. A contact surface forming portion having a second contact surface is formed at a position close to, and the jig contacts the first contact surface and the second contact surface, and the portion including the end surface is melted. By applying pressure to the first joint and the second joint that are in a state, the first joint and the second joint are welded. Required joint strength at the welded portion is ensured, moreover it is possible to produce articles which deformation of the article itself or the mounting surface is prevented or significantly reduced. In addition, the second joint portion of the base end portion is an article in which the attachment portion is formed by being formed at a position overlapping with the attachment surface when viewed from the first direction, and the enlargement is suppressed and narrow. Articles that can be placed in space can be manufactured.
[0018]
According to a fourth aspect of the present invention, in the method for manufacturing an article according to the third aspect, immediately before the start of welding, the end surface of the second joint portion of the base end portion and the second joint portion of the base end portion are welded. The distance between the end surface of the first joint portion in the pressing direction is the end surface of the second joint portion of the flange and the end surface of the first joint portion welded to the second joint portion of the flange. It is smaller than the interval in the pressurizing direction.
[0019]
Thereby, between the 1st junction part and the 2nd junction part of a base end part, the welding range in a pressurization direction becomes large.
As a result, according to the invention described in claim 4, in addition to the effect of the invention described in claim 3, the following effect is exhibited. That is, immediately before the start of welding, the distance in the pressing direction between the end surface of the second joint portion at the base end and the end surface of the first joint portion is the end surface of the second joint portion of the flange and the end surface of the first joint portion. Since the formation range of the welded portion between the first joint portion and the second joint portion at the base end portion is increased by being smaller than the interval in the pressing direction, the bonding strength at the second joint portion of the attachment portion is increased. Securement is facilitated and the bonding strength is further increased.
[0020]
According to a fifth aspect of the present invention, in the method for manufacturing an article according to the third or fourth aspect, the end surface of the second joint portion of the base end portion and the second joint of the base end portion immediately before the start of welding. The width of at least one of the end surfaces of the first joint portion welded to the portion is such that the end surface of the second joint portion of the flange and the second joint portion of the flange are welded to the first joint portion. It is narrower than the width of the end face.
[0021]
As a result, the bonding pressure between the first bonding portion and the second bonding portion at the base end is higher than the bonding pressure between the first bonding portion and the second bonding portion of the flange. The diffusion phenomenon at the first joining portion and the second joining portion at the base end portion and the welded portion is further promoted.
[0022]
As a result, according to the invention described in claim 5, in addition to the effects of the invention described in the cited claims, the following effects can be obtained. That is, immediately before the start of welding, the width of at least one of the end surface of the second joint portion of the base end portion and the end surface of the first joint portion welded to the second joint portion is the end surface of the second joint portion of the flange. Since the width of the end surface of the first joint portion welded to the second joint portion is narrower, the diffusion phenomenon in the second joint portion and the weld portion of the first joint portion and the base end portion is further promoted. Securing the bonding strength at the second bonding portion of the mounting portion is facilitated, and the bonding strength is further increased.
[0023]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to FIGS.
Referring to FIG. 1, an oil strainer S to which an article according to the present invention is applied is disposed in an oil pan 1 of an internal combustion engine mounted on a vehicle. The oil pan 1 is coupled to a lower end portion of a lower block 2 coupled to a lower end portion of a cylinder block 3 into which a piston 4 coupled to a crankshaft 6 via a connecting rod 5 is fitted by a number of bolts. And the oil pump 7 which consists of a trochoid pump which makes the crankshaft 6 a rotating shaft over the cylinder block 3 and the lower block 2 is attached.
[0024]
The oil pump 7 is connected at its upper part to one end wall 3a of the cylinder block 3 in the axial direction of the crankshaft 6 by a plurality of bolts, and at the lower part thereof, one of the lower blocks 2 in the axial direction. The side end wall 2a is coupled by a plurality of bolts. The pump body 7a of the oil pump 7 is formed with a suction portion 7b formed with a suction port 7c communicating with the pump chamber and a discharge portion formed with a discharge port 7d communicating with the pump chamber. The oil strainer S is attached to the oil pump 7 in a state where a flat mounting surface 33 of the mounting portion 30 described later is in surface contact with a flat mounting surface 7e1 of the mounting portion 7e formed at the end of the suction portion 7b. It is done.
[0025]
2 to 4, the oil strainer S includes a first case 10 as a first member, a second case 20 as a second member, and a filtering member 40, and the first and second cases 10 and 20. Are welded to each other at the first peripheral edge C1 and the second peripheral edge C2, which are the respective peripheral edges. A net-like filter member 40 for removing foreign matters mixed in the oil is disposed in the hollow portion 50 formed by the cases 10 and 20.
[0026]
The first case 10, which is a molded product integrally formed of a thermoplastic resin, for example, polyamide, is attached to the first flange 11 that constitutes the first peripheral edge C 1 that is the opening edge of the opening covered by the second case 20. A cylindrical inflow portion 12 that protrudes in a first direction A1 that is orthogonal to the surface 33 and has an oil inlet 12a formed at the tip thereof, and a second convex portion 28 that will be described later in the first direction A1. A tongue-like first convex portion 18 projecting from the first flange 11 at a position where it is formed is integrally formed. In this embodiment, the first direction A1 is the direction A of the applied pressure applied to the first and second cases 10 and 20 by the first and second jigs 61 and 62 for welding the cases 10 and 20, respectively.FIt is also a direction parallel to (hereinafter referred to as a pressurizing direction).
[0027]
An annular first flange 11 surrounding the opening of the first case 10 over the entire circumference is formed over the entire circumference of the first flange 11 and is in the first direction with the second facing surface 23 of the second case 20. It has the 1st opposing surface 13 which faces by A1. The first opposing surface 13 is formed so as to protrude toward the second opposing surface 23 in the first direction A1 over the entire circumference, and is welded to the second joint portion 24 at the welding portion M. The 1st junction part 14 which consists of a cyclic | annular protrusion is formed. In the drawing, for convenience of explanation, the welded portion M is indicated by hatching different from the first and second cases 10 and 20 and the filtering member 40.
[0028]
Further, on the first facing surface 13, a single outer varitrap groove 15 and a single strip formed of an annular groove extending all around the first joint portion 14 on the outer side and the inner side of the first joint portion 14. The inner varistor trap grooves 16 are respectively formed. Further, in the first flange 11, the surface opposite to the first facing surface 13 in the first direction A <b> 1 is pressed against the first joint 14 when the first case 10 and the second case 20 are welded. A contact surface 17 with which the first jig 61 for applying a pressing force is contacted is formed in the first direction A1.
[0029]
The first convex portion 18 formed on a part of the first flange 11 is integrally formed on the outer side wall 15a of the outer varitrap groove 15 so as to be positioned outside the first joint portion 14. The first convex portion 18 has an end surface 18a which is also an opposing surface facing the end surface 28a of the second convex portion 28 in the first direction A1, and a surface opposite to the second case 20 and the end surface 18a in the first direction A1. And a contact surface 18b with which the first jig 61 abuts during welding. Therefore, the first convex portion 18 is a contact surface forming portion. The contact surface 18b facing the first direction A1 is on the same plane as the contact surface 17 or in the vicinity of the plane including the contact surface 17, and a recess 18c is formed on the end surface 18a.
[0030]
The second case 20 which is a molded product integrally formed of a thermoplastic resin, for example, polyamide, is formed so as to protrude in the first direction A1 with a second peripheral edge C2 which is an opening edge of the opening covered by the first case 10. The attachment portion 30 having the attachment flange 32 at the tip portion and the tongue-like second convex portion 28 protruding from the attachment portion 30 are integrally formed.
[0031]
On the mounting surface 33 formed on the mounting flange 32 that is mounted on the mounting portion 7e (see FIG. 1) of the oil pump 7, an outlet through which the oil that has passed through the filter member 40 and flows out of the oil strainer S flows out. 22a opens. Therefore, the mounting portion 30 also serves as the outflow portion 22 of the oil strainer S. Further, the mounting flange 32 is provided with a pair of through holes 34 through which the pair of implanted bolts 8 (see FIG. 1) provided in the mounting portion 7e as fastening members are inserted, with the outlet 22a interposed therebetween. . Each stud 8 passes through the inside of a metal bush 35 press-fitted into each through hole 34.
[0032]
An annular second peripheral edge C2 surrounding the opening of the second case 20 over the entire circumference is a portion where the second flange 21 facing the first flange 11 except for the mounting portion 30 and the second flange 21 is absent. And a base end portion 31 of a mounting portion 30 that is continuous with the second flange 21 and faces the first flange 11. The flange-side second opposing surface 23f and the attachment-side second opposing surface 23t formed respectively on the second flange 21 and the base end portion 31 are continuous with each other over the entire circumference of the second peripheral edge C2. The second opposing surface 23 is formed.
[0033]
On the second facing surface 23, a single strip is formed so as to protrude from the first joint A 14 in the first direction A 1 over the entire circumference and welded to the first joint 14 at the weld M. The 2nd junction part 24 which consists of a cyclic | annular protrusion is formed. And the 2nd junction part 24 consists of the flange side 2nd junction part 24f and the attachment part side 2nd junction part 24t which are formed in the flange side 2nd opposing surface 23f and the attachment part side 2nd opposing surface 23t, respectively. Among these, as can be seen from FIGS. 2 (A), 2 (C), and 4, the attachment portion side second joint 24t almost overlaps the attachment surface 33 when viewed from the first direction A1. Formed in position.
[0034]
Further, the second facing surface 23 has a single outer varitrap groove 25 formed of an annular groove extending outside the second joint portion 24 and along the second joint portion 24 along the entire circumference of the second facing surface 23. A holding portion 26 formed of a stepped portion for holding the filtering member 40 in the first case 10 is formed inside the second joint portion 24. Further, in the second flange 21, a second jig 62 for applying a pressing force to the second joint 24 at the time of welding is provided on the surface opposite to the flange side second facing surface 23f in the first direction A1. An abutting surface 27 that abuts is formed facing the first direction A1.
[0035]
At the attachment surface 33 located at a position away from the welded portion M and the intermediate position in the first direction A1 from the contact surface 27 of the second flange 21, at least the attachment portion side second joint 24t and the attachment portion 30 are provided. The overlapping portion when viewed from the first direction A1 is the contact surface 38 with which the second jig 62 contacts. Here, the intermediate position is a position determined by the locus of the center point between the first facing surface 13 and the second facing surface 23 in the first direction A1, and in this embodiment, the outer varitrap groove 15 And an imaginary plane H at an intermediate position between the first facing surface 13 and the second facing surface 23 in the first direction A1 on the respective side walls 15a, 25a of the outer varitrap groove 25 (see FIGS. 3 and 4). Is the position.
[0036]
The second convex portion 28 formed so as to protrude from a part of the base end portion 31 is integrally formed on the outer side wall 25a of the outer varitrap groove 25 so as to be positioned outside the attachment portion side second joint portion 24t. ing. Referring to FIG. 2A, the second convex portion 28 is a portion farthest from the imaginary straight line L connecting the both end portions 21a and 21b of the second flange 21 of the base end portion 31 when viewed from the first direction A1. And a position that does not interfere with a tightening tool when the oil strainer S is fastened to the oil pump 7 by using the stud 8 (see FIG. 1).
[0037]
The second convex portion 28 is disposed on the end surface 28a which is also an opposing surface facing the first convex portion 18 in the first direction A1, and on the side opposite to the first case 10 and the end surface 28a in the first direction A1. And a contact surface 28b with which the second jig 62 contacts. Therefore, the second convex portion 28 is a contact surface forming portion. The contact surface 28b facing the first direction A1 is on the same plane as the contact surface 27 of the second flange 21 or in the vicinity of the plane including the contact surface 27, and is welded more than the mounting surface 33 in the first direction A1. Since the portion M and the intermediate position are close to each other, the applied pressure applied by the second jig 62 is larger than that in the case where the second jig 62 abuts against the mounting surface 33 and the second convex portion 28 and the base end. It is reliably transmitted to the mounting portion side second joint 24t through the portion 31. Further, the second convex portion 28 and its abutting surface 28b are in positions that do not overlap the mounting surface 33 and the mounting portion 30 when viewed from the first direction A1.
[0038]
As described above, the contact surface 17 of the first flange 11 and the contact surface 18b of the first convex portion 18 are the first contact surfaces formed on the first case 10 and the contact surface of the second flange 21. 27, the contact surface 28b of the second convex portion 28 and the contact surface 38 of the mounting surface 33 are second contact surfaces formed on the second case 20. Further, the contact surfaces 17 and 18b formed on the first case 10 and the contact surfaces 27 and 28b formed on the second case 20 except for the contact surface 38 substantially uniformly apply pressure during welding. It is substantially equidistant from the welded part M or the intermediate position so as to be transmitted to the welded part M.
[0039]
Referring to FIGS. 3 and 4, the filter member 40, which is a molded product of a thermoplastic resin, for example, polyamide, has a third flange 41 that constitutes a third peripheral edge C <b> 3 held by the holding part 26 of the second case 20. The third opposed surface 43 of the third flange 41 facing the first opposed surface 13 extends over the entire circumference of the third opposed surface 43 and protrudes toward the first opposed surface 13 and is welded. A third joint portion 44 is formed which is composed of a single annular protrusion that is welded to the first joint portion 14 at M. Further, the third opposing surface 43 has a single varitrap groove 45 consisting of an annular groove extending along the third joint portion 44 over the entire circumference of the third opposing surface 43 inside the third joint portion 44. Is formed.
[0040]
In a state where the third flange 41 is held by the holding portion 26, the outer peripheral surface of the third joint portion 44 and the inner peripheral surface of the second joint portion 24 are in contact with each other. The third facing surface 43 is formed on the flange-side third facing surface 43 f formed on the portion of the third flange 41 held by the holding portion 26 formed on the second flange 21 and the base end portion 31. The mounting portion side third opposing surface 43t formed at the portion of the third flange 41 held by the holding portion 26, and both the third opposing surfaces 43f and 43t are continuous with each other. The third joint 44 includes a flange-side third joint 44f formed on the flange-side third facing surface 43f, and a mounting-part-side third joint 44t formed on the mounting-side third facing surface 43t. Consists of.
[0041]
In addition, each burr trap groove 15, 16, 25, 45 accommodates the burr F generated at the first joint 14, the second joint 24 and the third joint 44 at the time of welding. 1 and the second peripheral edge portions c1 and C2 are not exposed to the outside of the oil strainer S and the hollow portion 50.
[0042]
Thus, as shown in FIGS. 3 and 4, in the oil strainer S, the hollow portion 50 is prevented from flowing into the oil flow by the filtering member 40 held by the first and second peripheral portions C1 and C2. An upstream chamber 50a located upstream of the filtration member 40 and connected to the inlet 12a (see FIG. 2), and a downstream chamber 50b located downstream of the filtration member 40 and connected to the outlet 22a (see FIG. 2). Is done.
[0043]
Referring also to FIG. 1, the oil strainer S is inserted into each of the implanting bolts 8 after the pair of implantation bolts 8 provided in the attachment portion 7e of the oil pump 7 are inserted into the pair of through holes 34 of the attachment flange 32, respectively. When the mounting flange 32 is tightened by the nut 9 screwed to the bolt 8, the planar first and second opposing surfaces 13, 23 parallel to each other are fastened to the oil pump 7 in a state inclined with respect to the horizontal plane. Is done. At this time, an annular seal member 37 (see FIG. 2B) made of an elastic body mounted in an annular mounting groove 36 formed on the mounting surface 33 so as to surround the outlet 22a hits the mounting surface 7e1. The suction port 7c and the outlet 22a are connected in a liquid-tight sealed state due to elastic deformation in contact. Therefore, both mounting surfaces 7e1 and 33 are also sealing surfaces.
[0044]
When the internal combustion engine is operated with the oil strainer S attached to the oil pump 7 and the oil pump 7 is operated by the rotation of the crankshaft 6, the oil stored in the oil pan 1 passes through the oil strainer S. Pumped up by the oil pump 7. Specifically, the oil that flows into the downstream chamber 50a from the inlet 12a of the oil strainer S is cleaned through the filtering member 40 to reach the downstream chamber 50b, and further flows out from the outlet 22a and flows into the suction port 7c. . The oil that has flowed into the pump chamber through the suction port 7c is made high pressure in the pump chamber, and then discharged to the discharge port 7d. Thereafter, the oil passes through the oil filter and passes through the main gallery formed in the cylinder block 3. Supplied to lubricated parts such as bearings and sliding parts. The oil after lubricating the lubricating part returns to the oil pan 1 through the return oil passage and the crank chamber.
[0045]
By the way, the first case 10 and the second case 20 are welded by a hot plate welding method. Therefore, in the first case 10 and the second case 20 in which the filtering member 40 is held by the holding portion 26, the mounting surface 33 is horizontal, and the first and second opposing surfaces 13, 23 are parallel to each other. In addition, the first and second jigs 61 and 62 are in contact with the contact surfaces 17, 18b, 27, 28b and 38 of the first and second cases 10 and 20, respectively, in a state inclined with respect to the horizontal plane. The first jig 61 fixed to the fixed base and the second jig 62 fixed to the movable base capable of reciprocating in the moving direction are respectively fixed. At this time, the first joint portion 14 and the second joint portion 24 in a separated state face each other in the moving direction of the second jig 62 (in this embodiment, the same as the pressing direction and the first direction A1). Occupies a position to do.
[0046]
In this state, in the first, second, and third joint portions 14, 24, and 44, front end surfaces 14a, 24a, and 44a that are end surfaces of the first, second, and third joint portions 14, 24, and 44 (FIG. 5). , See FIG. 6) and a hot plate that contacts the first, second, and third joints 14, 24, and 44 until the melted part including the part that constitutes the welded part M exceeds the melting point and becomes a melted state. (Not shown) and then the hot plate is removed.
[0047]
  And the state of the 1st, 2nd, 3rd junction part 14, 24, 44 at the time just before a welding start is shown by FIG. 5, FIG. At the first, second and third joints 14, 24 and 44 just before the start of welding, the attachment part side second joint 24t and the attachment partSideThe three joint portions 44t project in the pressurizing direction or the first direction A1 with a larger projecting amount than the flange-side second joint portion 24f with respect to the contact surface 27 or the contact surface 28b. On the other hand, the first joint portion 14 protrudes in the pressurizing direction or the first direction A1 with the same protrusion amount over the entire circumference with respect to the contact surface 17 or the contact surface 18b. The distal end surface 24a of the attachment portion side second joint portion 24t and the distal end surface 44a of the attachment portion side third joint portion 44t are on the same plane.
[0048]
Therefore, the front end surface 24a of the mounting portion side second joint portion 24t and the front end surface 44a of the mounting portion side third joint portion 44t, and the mounting portion side second joint portion 24t and the mounting portion side third joint portion 44t are welded. The distance Dt between the first joint 14 and the tip surface 14a in the pressurizing direction is such that the tip surface 24a of the flange-side second joint 24f, the tip surface 44a of the flange-side third joint 44f, and the flange-side second. It is set to be smaller than the distance Df in the pressurizing direction with the tip surface 14a of the first joint portion 14 welded to the joint portion 24f and the flange side third joint portion 44f.
[0049]
Further, immediately before the start of welding, the width W2t of the front end surface 24a of the mounting portion side second joint 24t is welded to the width W2f of the front end surface 24a of the flange side second joint 24f and the flange side second joint 24f. The width W1f of the front end surface 14a of the first joint 14 and the width W1t of the front end surface 14a of the first joint 14 welded to the attachment-side second joint 24t are set narrower. Note that the widths W3 of the front end surface 44a of the attachment portion side third joint 44t and the front end surface 44a of the flange side third joint 44f are set equal.
[0050]
Thereafter, the second jig 62 is filtered while the tip surface 14a of the first joint 14 and the tip surface 44 of the third joint 44 are opposed to the tip surface 24a of the second joint 24 in the pressurizing direction. The second case 20 holding the member 40 is moved in a moving direction in which the second case 20 is relatively brought closer to the first case 10 while holding the second case 20, and the first joint portion 14, the second joint portion 24 and the filtration are moved. The first jig 61 and the second jig 62 are respectively attached to the first case 10 by bringing the member 40 into contact with each other and moving together with the second case 20 so that the cases 10 and 20 are relatively close to each other. The contact surfaces 17, 18b and the contact surfaces 27, 28b, 38 of the second case 20 are pressurized so that the portions including the tip surfaces 14a, 24a, 44a are in a molten state. By applying pressure in the pressurizing direction to the three joints 14, 24, 44, the first joint 14, the second joint 24, and the third joint 44 are welded, and the pressurization method Or welding unit M is formed over a predetermined range in the first direction A1.
[0051]
Next, operations and effects of the embodiment configured as described above will be described.
The first joint portion 14 of the first flange 11 of the first case 10 that is a molded product of thermoplastic resin and the second joint portion 24 of the second peripheral portion C2 of the second case 20 that is a molded product of thermoplastic resin are provided. In manufacturing the oil strainer S to be welded at the welded portion M, the second case 20 is integrally formed with a mounting portion 30 having a mounting surface 33 at the tip, and the first case 10 and the second case 20 are attached to the mounting portion 30. Contact surfaces 17, 18b and contact surfaces 27, 28b, 38 facing the first direction A1, which is a direction orthogonal to the surface 33, are formed, and the second peripheral edge C2 has the contact surface 27. It consists of a second flange 21 and a base end portion 31 of a mounting portion 30 formed in a portion lacking the second flange 21. The base end portion 31 is welded to the base portion 31 more than the mounting surface 33 in the first direction A1. A second convex portion 28 having a contact surface 28b is formed at a position close to M or the intermediate position, and the first and second jigs 61 and 62 are formed in the first case 10. The first and first contact portions 17 and 18b and the contact surfaces 27, 28b and 38 of the second case 20 are in contact with each other, and the portions including the tip surfaces 14a, 24a and 44a are in a molten state. A pressure is applied to the second joints 14 and 24 and the third joint 44 of the filter member 40 to weld the first joint 14 and the second joint 24, and further the first joint 14 and the third joint. The part 44 is welded. As a result, in the mounting portion 30, compared to the case where the pressing force acts only on the mounting surface 33, the pressing force of the second jig 62 is effective on the second joint portion 24 through the contact surface 28 b of the second convex portion 28. Therefore, the joint strength at the welded portion M of the first and second joint portions 14 and 24 is increased, the required joint strength is ensured, and the first contact at the contact surface 38 of the mounting surface 33 is ensured. 2 Since the pressure applied to the jig 62 can be reduced, it is possible to manufacture the oil strainer S in which deformation of the oil strainer S itself or the mounting surface 33 is prevented or greatly suppressed. In addition, the second joint portion 24t of the base end portion 31 is an oil strainer S in which the mounting portion 30 is formed by being formed at a position overlapping the mounting surface 33 when viewed from the first direction A1, and has a large size. Therefore, the oil strainer S that can be arranged in a narrow space can be manufactured.
[0052]
Further, when the oil strainer S is attached to the oil pump 7, the outlet 22a and the suction port 7c of the oil pump 7 are connected in a liquid-tight state, and both the attachment surfaces 7e1 and 33 constitute a seal surface, thereby providing a seal. Since the deformation of the mounting surface 33 which is a surface is prevented or suppressed as described above, high sealing performance can be ensured at the connecting portion between the oil strainer S and the oil pump 7.
[0053]
The second convex portion 28 is attached by being located at a position including a portion of the base end portion 31 farthest from the virtual straight line L connecting the both end portions 21a and 21b of the second flange 21 when viewed from the first direction A1. In the part-side second joint portion 24t, the second jig 62 is passed through the second convex portion 28 to the portion where the joint strength is most likely to decrease because it is farthest from the contact surface 27 of the second flange 21. Therefore, the joint strength between the attachment portion-side second joint portion 24t and the first joint portion 14 can be increased as a whole.
[0054]
Since the second projecting portion 28 is formed so as to protrude from the base end portion 31, the rigidity of the attachment portion 30 is increased, and therefore, the oil strainer S can be appropriately and stably attached through the attachment portion 30. Further, an outer varitrap groove 25 is formed at least on the base end portion 31 of the second peripheral edge portion C2 on the outer side of the mounting portion side second joint 24t, and the second convex portion 28 has an outer varitrap groove. Since the burr F of the welded part M does not protrude outward from the base end part 31 and the convex part 28, the appearance of the oil strainer S is improved. Further, the first peripheral edge portion C1 and the second peripheral edge portion C2 are provided outside the first joint portion 14 and the second joint portion 24, and outside varitrap grooves 15, 25 over the entire periphery of both the peripheral edge portions C1, C2. Since the burrs F of the welded portion M are not exposed to the outside of the oil strainer S around the entire circumference of the first peripheral edge portion C1 and the second peripheral edge portion C2, the oil strainer S also in this respect. The appearance of is improved.
[0055]
Immediately before the start of welding, the distance Dt in the pressurizing direction between the distal end surface 24a of the attachment portion side second joint portion 24t and the distal end surface 14a of the first joint portion 14 welded to the attachment portion side second joint portion 24t is The distance Df between the front end surface 24a of the flange side second joint 24f and the front end surface 14a of the first joint 14 welded to the flange side second joint 24f is smaller than the distance Df in the pressurizing direction. Since the formation range in the pressurizing direction of the welded portion M between the one joint portion 14 and the attachment portion side second joint portion 24t becomes large, it becomes easy to secure the joint strength at the attachment portion side second joint portion 24t, In addition, the bonding strength is further increased.
[0056]
Further, immediately before the start of welding, the width W2t of the tip end surface 24a of the attachment side second joint 24t is welded to the width W2f of the tip end surface 24a of the flange side second joint 24f and the flange side second joint 24. Since the width W1f of the front end surface 14a of the first joint portion 14 is narrower, the joining pressure between the first joint portion 14 and the mounting portion side second joint portion 24t is reduced to the first joint portion 14 and the flange side. Since it becomes higher than the bonding pressure between the second bonding portion 24f, the diffusion phenomenon at the welded portion M between the first bonding portion 14 and the mounting portion side second bonding portion 24t is further promoted. Also in this respect, it is easy to ensure the bonding strength at the attachment-side second bonding portion 24t, and the bonding strength is further increased.
[0057]
Hereinafter, an example in which a part of the configuration of the above-described embodiment is changed will be described with respect to the changed configuration.
A plurality of attachment portions may be formed on the second case 20, and attachment portions may be formed on the first case 10 and the second case 20, respectively. As for the jig, the first jig 61 may move, the second jig 62 may be fixed, and both the jigs 61 and 62 may move.
[0058]
As shown in FIG. 7, the first and second convex portions 18 and 28 may have concave portions 18c and 28c formed on the contact surfaces 18b and 28b instead of the end surfaces 18a and 28a. As shown in FIG. 8, the end surfaces 18a and 28a and the contact surfaces 18b and 28b may be formed with no recesses. Furthermore, when the first and second convex portions 18 and 28 are formed, the rigidity of the first flange 11 or the rigidity of the mounting portion 30 from the base end portion 31 to the mounting flange 32 at the distal end portion is insufficient. 4, ribs 19 and 29 connecting between the contact surface 18 b and a part of the contact surface 28 b and the outer peripheral surface of the first flange 11 and the outer peripheral surface of the mounting portion 30, as indicated by a two-dot chain line. May be provided respectively.
[0059]
In addition, the positioning portions of the first and second cases 10 and 20 can be formed by using the end surfaces 18a and 28a of the first and second convex portions 18 and 28, respectively. For example, as shown in FIG. 9, the fitting convex portion 18 d is formed on the end surface 18 a of the first convex portion 18, and the fitting concave portion 28 d is formed on the end surface 28 a of the second convex portion 28. Generally, in the first and second convex portions 18 and 28, a fitting convex portion is formed on the end surface of one convex portion, and a fitting concave portion is formed on the end surface of the other convex portion, thereby welding. Sometimes the fitting protrusion can be fitted into the fitting recess. Thereby, the positioning at the time of welding of the first case 10 and the second case 20 can be performed, and the positional deviation between the first case 10 and the second case 20 at the time of welding is surely prevented.
[0060]
  First1CaseTenThe contact surface17Having the first1Flange11Is first1Peripheral partC1Is formed around the entire circumference of the1Convex18There is no need. In the above embodiment, a pair of first and second convex portions 18 and 28 are formed in a pair in both cases 10 and 20. The second convex part may be formed.
[0061]
  The entire mounting surface 33 may be a contact surface with the second jig 62. Also,Mounting part 30 And second convex part 28 AndIf the required joint strength at the welded part M between the attachment part side second joint part 24t and the first joint part 14 can be obtained only by the second convex part 28 with which the second jig 62 abuts, the attachment surface 33 does not need to be a contact surface with which the second jig 62 contacts. Therefore, in this case, since the pressurization by the second jig 62 on the mounting surface 33 is not necessary, deformation at the oil strainer S itself or the mounting portion 30 including the mounting surface 33 is prevented.
[0062]
Immediately before the start of welding, the width W1t of the front end surface 14a of the first joint 14 to be welded to the attachment side second joint 24t is equal to the width W2f of the front end surface 24a of the flange side second joint 24f and the flange side first. The width W1f of the front end surface 14a of the first joint portion 14 welded to the two joint portions 24f may be set narrower. Also in this case, the bonding pressure between the first bonding portion 14 and the mounting portion side second bonding portion 24t is larger than the bonding pressure between the first bonding portion 14 and the flange side second bonding portion 24f. Since it becomes high, it becomes easy to ensure the bonding strength at the attachment-side second bonding portion 24t, and the bonding strength is further increased.
[0063]
The abutting surface forming portion may be constituted by a concave portion having a bottom surface with which the first and second jigs 61 and 62 can abut instead of the convex portion.
The welding may be performed by a welding method other than the hot plate welding method, for example, a vibration welding method, an ultrasonic welding method, or a laser welding method.
[0064]
The internal combustion engine provided with the oil strainer S is used in a vehicle in the above-described embodiment, but is used in a ship propulsion device such as an outboard motor having a crankshaft oriented in the vertical direction. Also good. Furthermore, the oil strainer S may be provided in equipment other than the internal combustion engine.
[0065]
The oil strainer S is disposed in the oil pan 1 of the internal combustion engine, but may be an oil strainer used for equipment other than the internal combustion engine. Further, the component may be an article having a hollow portion other than the oil strainer.
[Brief description of the drawings]
FIG. 1 is a schematic cross-sectional view of an internal combustion engine including an oil strainer that is an embodiment of an article of the present invention.
2A is an upper plan view, FIG. 2B is a side view, and FIG. 2C is a lower plan view of the oil strainer of FIG. 1;
3 is a cross-sectional view taken along line III-III in FIG.
4 is a cross-sectional view taken along the line IV-IV in FIG. 2;
5 is an enlarged cross-sectional view of a main part corresponding to FIG. 3 showing a state immediately before the start of welding.
6 is an enlarged cross-sectional view of a main part corresponding to FIG. 4 showing a state immediately before the start of welding.
FIG. 7 is a cross-sectional view of a main part corresponding to FIG. 3 showing a first modification of the convex part.
FIG. 8 is a cross-sectional view of a main part corresponding to FIG. 3 showing a second modification of the convex part.
FIG. 9 is a cross-sectional view of a main part corresponding to FIG. 3 showing a third modification of the convex part.
FIG. 10 is a schematic cross-sectional view for explaining the prior art, in which (A) shows how the flanges of the two cases constituting the article are pressed by a jig, and (B) The flange of one case shows a mode that the attachment part of the other case is pressurized with a jig, respectively.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Oil pan, 2 ... Lower block, 3 ... Cylinder block, 4 ... Piston, 5 ... Connecting rod, 6 ... Crankshaft, 7 ... Oil pump, 8 ... Stud bolt, 9 ... Nut, 10 ... First case, 11 ... 1st flange, 12 ... Inflow part, 13 ... 1st opposing surface, 14 ... 1st junction part, 15, 16 ... Varitrap groove, 17 ... Contact surface, 18 ... 1st convex part, 19 ... Rib,
20 ... second case, 21 ... second flange, 22 ... outflow portion, 23 ... second facing surface, 24 ... second joint portion, 25 ... varitrap groove, 26 ... holding portion, 27 ... contact surface, 28 ... 2nd convex part, 29 ... rib,
30 ... Mounting portion, 31 ... Base end, 32 ... Mounting flange, 33 ... Mounting surface, 34 ... Through hole, 35 ... Bushing, 36 ... Mounting groove, 37 ... Seal member, 38 ... Abutting surface,
40 ... Filtration member, 41 ... 3rd flange, 43 ... 3rd opposing surface, 44 ... 3rd junction part, 45 ... Vari trap groove,
50 ... hollow part, 61, 62 ... jig,
S ... Oil strainer, A1 ... First direction, AF... direction of pressure, C1, C2, C3 ... peripheral edge, M ... weld, H ... virtual plane, L ... virtual straight line, F ... burr, Df, Dt ... spacing, W1f, W1t, W2f, W2t, W3 ... width.

Claims (5)

いずれも熱可塑性樹脂の成形品である第１部材（１０）および第２部材（２０）を備え、前記第１部材（１０）の第１周縁部（Ｃ１）および前記第２部材（２０）の第２周縁部（Ｃ２）に第１接合部（１４）および第２接合部（２４）がそれぞれ形成され、前記第１接合部（１４）と前記第２接合部（２４）とが溶着部（Ｍ）で溶着された物品において、
前記第２部材（２０）には、先端部に取付面（３３）を有する取付部（３０）が一体成形されており、前記第１部材（１０）および前記第２部材（２０）には、前記取付面（３３）に直交する方向である第１方向（Ａ１）に面すると共に溶着時に前記第１接合部（１４）および前記第２接合部（２４）に加圧力を作用させる治具（６１，６２）が当接し得る当接面（１７，２７，２８ｂ）が形成されていて、前記第２周縁部（Ｃ２）は、前記当接面（２７）を有するフランジ（２１）と、該フランジ（２１）が欠如した部分に形成されている前記取付部（３０）の基端部（３１）とからなり、該基端部（３１）の前記第２接合部（２４ｔ）は、前記第１方向（Ａ１）から見て前記取付面（３３）と重なる位置にあり、前記基端部（３１）には、前記第１方向（Ａ１）で前記取付面（３３）よりも前記溶着部（Ｍ）に近い位置にある前記当接面（２８ｂ）を有する当接面形成部（２８）が形成されていることを特徴とする物品。Both are provided with a first member (10) and a second member (20) which are molded products of a thermoplastic resin, and the first peripheral portion (C1) of the first member (10 ) and the second member (20) . A first joint (14) and a second joint (24) are formed on the second peripheral edge (C2) , respectively, and the first joint (14) and the second joint (24) are welded ( In the article welded in M) ,
The second member (20) is integrally formed with a mounting portion (30) having a mounting surface (33) at the tip, and the first member (10) and the second member (20) A jig that faces the first direction (A1), which is a direction orthogonal to the mounting surface (33) , and applies pressure to the first joint (14) and the second joint (24) during welding ( 61, 62) is formed with contact surfaces (17, 27, 28b) on which the second peripheral edge (C2) has a flange (21) having the contact surface (27) ; the mounting portion of the flange (21) is formed on the portion lacking the proximal end portion (30) becomes from (31), said second joint portions of the base end portion (31) (24t), the first in a position overlapping with the mounting surface when viewed from one direction (A1) (33), said proximal portion (31) Said abutment surfaces forming part having the abutment surface (28b) located closer to said welded portion than the mounting surface (33) (M) in a first direction (A1) (28) is formed Article characterized by. 前記当接面形成部（２８）は、前記基端部（３１）から突出する凸部（２８）であり、前記第２周縁部（Ｃ２）の少なくとも前記基端部（３１）には、前記第２接合部（２４）よりも外側にバリトラップ溝（２５）が形成されており、前記凸部（２８）は、前記バリトラップ溝（２５）の外側の側壁（２５ａ）に一体成形されていることを特徴とする請求項１記載の物品。The contact surface forming portion (28) is a convex portion (28) protruding from the base end portion (31 ) , and at least the base end portion (31) of the second peripheral edge portion (C2) A varitrap groove (25) is formed outside the second joint portion (24) , and the convex portion (28) is integrally formed on the side wall (25a) outside the varitrap groove (25). The article according to claim 1, wherein: いずれも熱可塑性樹脂の成形品である第１部材（１０）および第２部材（２０）を備え、前記第１部材（１０）の第１周縁部（Ｃ１）および前記第２部材（２０）の第２周縁部（Ｃ２）に第１接合部（１４）および第２接合部（２４）がそれぞれ形成され、前記第１接合部（１４）と前記第２接合部（２４）とが溶着部（Ｍ）で溶着される物品の製造方法において、
前記第２部材（２０）には先端部に取付面（３３）を有する取付部（３０）が一体成形されており、前記第１部材（１０）および前記第２部材（２０）には、前記取付面（３３）に直交する方向である第１方向（Ａ１）に面すると共に治具（６１，６２）が当接する第１当接面（１７）および第２当接面（２７，２８ｂ）がそれぞれ形成されていて、前記第２周縁部（Ｃ２）は、前記第２当接面（２７）を有するフランジ（２１）と、該フランジ（２１）が欠如した部分に形成されている前記取付部（３０）の基端部（３１）とからなり、該基端部（３１）の前記第２接合部（２４ｔ）は、前記第１方向（Ａ１）から見て前記取付面（３３）と重なる位置に形成されており、前記基端部（３１）には、前記第１方向（Ａ１）で前記取付面（３３）よりも前記溶着部（Ｍ）に近い位置にある前記第２当接面（２８ｂ）を有する当接面形成部（２８）が形成されており、前記治具（６１，６２）は、前記第１当接面（１７）および前記第２当接面（２７，２８ｂ）に当接して、いずれも端面（１４ａ，２４ａ）を含む部分が溶融状態とされた前記第１接合部（１４）および前記第２接合部（２４）に加圧力を作用させることにより、前記第１接合部（１４）と前記第２接合部（２４）とが溶着されることを特徴とする物品の製造方法。Both are provided with a first member (10) and a second member (20) which are molded products of a thermoplastic resin, and the first peripheral portion (C1 ) of the first member (10 ) and the second member (20) . A first joint (14) and a second joint (24) are formed on the second peripheral edge (C2) , respectively, and the first joint (14) and the second joint (24) are welded ( M ) in the method for producing the article to be welded,
Wherein the second member (20) are integrally molded mounting portion (30) having a mounting surface (33) at the distal end portion, the first member (10) and said second member (20), the A first contact surface (17) and a second contact surface (27, 28b) that face the first direction (A1) , which is a direction orthogonal to the mounting surface (33), and contact the jig (61, 62 ). There have been respectively formed, the second peripheral portion (C2), said second flange (21) having an abutment surface (27), said mounting of the flange (21) is formed on the portion lacking base end parts (30) becomes from (31), said second joint portions of the base end portion (31) (24t), said mounting surface when viewed from the first direction (A1) and (33) are formed in positions overlapping, said proximal portion (31), said mounting surface in said first direction (A1) (3 ) And abutment surface forming part (28) is formed with a second abutment surface (28b) at a position closer to the welded portion (M) than said jig (61, 62), the The first joint portion (14) in which the first contact surface (17) and the second contact surface (27, 28b) are in contact with each other and the portions including the end surfaces (14a, 24a) are in a molten state. and wherein by applying a pressure to the second junction (24), the method of making an article first joint (14) and the second joint portion (24) and is characterized in that it is welded. 溶着開始直前において、前記基端部（３１）の前記第２接合部（２４ｔ）の端面（２４ａ）と、前記基端部（３１）の前記第２接合部（２４ｔ）に溶着される前記第１接合部（１４）の端面（１４ａ）との加圧方向での間隔（Ｄｔ）は、前記フランジ（２１）の前記第２接合部（２４ｆ）の端面（２４ａ）と、前記フランジ（２１）の前記第２接合部（２４ｆ）に溶着される前記第１接合部（１４）の端面（１４ａ）との加圧方向での間隔（Ｄｆ）よりも小さいことを特徴とする請求項３記載の物品の製造方法。In the welding immediately before, the second joint portion of the base end portion (31) with the end face of (24t) (24a), said first be welded to the second junction of said proximal portion (31) (24t) interval at the pressure direction between the end face of the first joint portion (14) (14a) (Dt), the end face of the second joint portion of the flange (21) (24f) and (24a), said flange (21) The distance (Df) in the pressurizing direction with the end surface (14a) of the first joint portion (14) welded to the second joint portion (24f) is smaller than the distance (Df) . Article manufacturing method. 溶着開始直前において、前記基端部（３１）の前記第２接合部（２４ｔ）の端面（２４ａ）および前記基端部（３１）の前記第２接合部（２４ｔ）に溶着される前記第１接合部（１４）の端面（１４ａ）の少なくとも一方の端面の幅（Ｗ２ｔ、Ｗ１ ｔ）は、前記フランジ（２１）の前記第２接合部（２４ｆ）の端面（２４ａ）および前記フランジ（２１）の前記第２接合部（２１ｆ）に溶着される前記第１接合部（１４）の端面（１４ａ）の幅（Ｗ１ｆ）よりも狭いことを特徴とする請求項３または請求項４記載の物品の製造方法。In the welding immediately before, the end surface (24a) and said first to said being welded to the second joint portion (24t) of said proximal portion (31) of the second joint portion of the proximal end portion (31) (24t) at least one end face of the width of the end face of the joint (14) (14a) (W2t , W1 t) , the end face (24a) and said flange of said second joint portion of the flange (21) (24f) (21 ) The article according to claim 3 or 4, wherein the width (W1f) of the end face (14a) of the first joint (14) welded to the second joint (21f) is narrower. Production method.
JP2002314548A 2002-10-29 2002-10-29 Article on which molded article of thermoplastic resin is welded and method for producing the same Expired - Lifetime JP3748251B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002314548A JP3748251B2 (en) 2002-10-29 2002-10-29 Article on which molded article of thermoplastic resin is welded and method for producing the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002314548A JP3748251B2 (en) 2002-10-29 2002-10-29 Article on which molded article of thermoplastic resin is welded and method for producing the same

Publications (2)

Publication Number Publication Date
JP2004148592A JP2004148592A (en) 2004-05-27
JP3748251B2 true JP3748251B2 (en) 2006-02-22

Family

ID=32458827

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002314548A Expired - Lifetime JP3748251B2 (en) 2002-10-29 2002-10-29 Article on which molded article of thermoplastic resin is welded and method for producing the same

Country Status (1)

Country Link
JP (1) JP3748251B2 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4592446B2 (en) * 2005-02-28 2010-12-01 ダイキョーニシカワ株式会社 Vehicle fluid filter device and method of manufacturing the same
CN102635421B (en) 2006-09-28 2014-12-31 大协西川株式会社 Oil strainer
JP4749298B2 (en) * 2006-09-28 2011-08-17 ダイキョーニシカワ株式会社 Oil strainer
JP5664486B2 (en) * 2011-07-25 2015-02-04 トヨタ紡織株式会社 Fluid filter
JP6232236B2 (en) * 2013-09-20 2017-11-15 ダイキョーニシカワ株式会社 Oil strainer

Also Published As

Publication number Publication date
JP2004148592A (en) 2004-05-27

Similar Documents

Publication Publication Date Title
EP2625411B1 (en) Piston assembly
JPH0754616Y2 (en) Fuel delivery pipe
MXPA06013362A (en) Valve cover assembly for a vehicle engine and method for producing same .
JP3748251B2 (en) Article on which molded article of thermoplastic resin is welded and method for producing the same
US11421705B2 (en) Compressor housing for turbocharger and method for manufacturing the same
JP2006233866A (en) Common rail
JP2007224782A (en) Oil strainer for vehicle
US8910611B2 (en) Fluid delivery system and method of forming fluid delivery system
JP2005127208A (en) Cross flow fan and manufacturing method for cross flow fan
JP3183182B2 (en) Resin intake manifold
US20040145177A1 (en) Coupling structure for a hollow body
JP3218985B2 (en) Resin hollow body
US10550795B2 (en) Cylinder head cover
JP4447507B2 (en) Oil control valve mounting body, resin member, internal combustion engine cylinder head cover, and internal combustion engine cylinder head cover mounting structure
KR101622408B1 (en) Engine oil strainer
JP2007170189A (en) Oil strainer
JPS6249448B2 (en)
CN106969656A (en) Cooling agent connector, connection bar portion, shell part and the inlet manifold of heat exchanger
WO2016140672A1 (en) Oil pan with integral lube suction and stiffening passage
JP5046805B2 (en) Oil strainer
JP3300548B2 (en) Air duct with resonator
KR20190121587A (en) Rotor assembly
JP3014416B2 (en) Steel joint
JP3637791B2 (en) Method for producing hollow resin container
JP4518688B2 (en) Saddle-type vehicle fuel tank system

Legal Events

Date Code Title Description
A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20050812

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20050831

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20051019

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20051124

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20051124

R150 Certificate of patent or registration of utility model

Ref document number: 3748251

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

Free format text: JAPANESE INTERMEDIATE CODE: R150

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081209

Year of fee payment: 3

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091209

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091209

Year of fee payment: 4

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101209

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101209

Year of fee payment: 5

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111209

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20111209

Year of fee payment: 6

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20121209

Year of fee payment: 7

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20131209

Year of fee payment: 8

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250

EXPY Cancellation because of completion of term