JP2018114689A - Process for producing resin product and process for producing interior material for vehicles - Google Patents

Process for producing resin product and process for producing interior material for vehicles Download PDF

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JP2018114689A
JP2018114689A JP2017007370A JP2017007370A JP2018114689A JP 2018114689 A JP2018114689 A JP 2018114689A JP 2017007370 A JP2017007370 A JP 2017007370A JP 2017007370 A JP2017007370 A JP 2017007370A JP 2018114689 A JP2018114689 A JP 2018114689A
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Prior art keywords
mounting boss
manufacturing
boss
tip
mounting
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利幸 小池
Toshiyuki Koike
利幸 小池
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Toyota Boshoku Corp
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Toyota Boshoku Corp
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/20—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines
    • B29C66/21—Particular design of joint configurations particular design of the joint lines, e.g. of the weld lines said joint lines being formed by a single dot or dash or by several dots or dashes, i.e. spot joining or spot 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
    • B29C65/56—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using mechanical means or mechanical connections, e.g. form-fits
    • B29C65/60—Riveting or staking
    • B29C65/606—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking
    • B29C65/607—Riveting or staking the rivets being integral with one of the parts to be joined, i.e. staking the integral rivets being hollow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/78—Means for handling the parts to be joined, e.g. for making containers or hollow articles, e.g. means for handling sheets, plates, web-like materials, tubular articles, hollow articles or elements to be joined therewith; Means for discharging the joined articles from the joining apparatus
    • B29C65/7802—Positioning the parts to be joined, e.g. aligning, indexing or centring
    • B29C65/782—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined
    • B29C65/7823—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint
    • B29C65/7829—Positioning the parts to be joined, e.g. aligning, indexing or centring by setting the gap between the parts to be joined by using distance pieces, i.e. by using spacers positioned between the parts to be joined and forming a part of the joint said distance pieces being integral 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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/112—Single lapped joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/01—General aspects dealing with the joint area or with the area to be joined
    • B29C66/05—Particular design of joint configurations
    • B29C66/10—Particular design of joint configurations particular design of the joint cross-sections
    • B29C66/11—Joint cross-sections comprising a single joint-segment, i.e. one of the parts to be joined comprising a single joint-segment in the joint cross-section
    • B29C66/114—Single butt joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—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
    • 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
    • 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
    • B29C66/712—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 the composition of one of the parts to be joined being different from the composition of the other part
    • 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
    • B29C66/731—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 intensive physical properties of the material of the parts to be joined
    • B29C66/7315—Mechanical properties
    • B29C66/73151—Hardness
    • B29C66/73152—Hardness of different hardness, i.e. the hardness of one of the parts to be joined being different from the hardness of the other part
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81427—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth
    • B29C66/81429—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single ridge, e.g. for making a weakening line; comprising a single tooth comprising a single tooth
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81431—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined comprising a single cavity, e.g. a groove
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/80—General aspects of machine operations or constructions and parts thereof
    • B29C66/83—General aspects of machine operations or constructions and parts thereof characterised by the movement of the joining or pressing tools
    • B29C66/832—Reciprocating joining or pressing tools
    • B29C66/8322—Joining or pressing tools reciprocating along one axis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/92—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools
    • B29C66/924—Measuring or controlling the joining process by measuring or controlling the pressure, the force, the mechanical power or the displacement of the joining tools by controlling or regulating the pressure, the force, the mechanical power or the displacement of the joining tools
    • 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
    • B29C66/90—Measuring or controlling the joining process
    • B29C66/94—Measuring or controlling the joining process by measuring or controlling the time
    • B29C66/944—Measuring or controlling the joining process by measuring or controlling the time by controlling or regulating the time
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
    • B29L2031/00—Other particular articles
    • B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
    • B29L2031/3005—Body finishings
    • B29L2031/3014—Door linings

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Vehicle Interior And Exterior Ornaments, Soundproofing, And Insulation (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a process for producing a resin part, which can achieve high productivity in a case various resins are used, and a process for producing an interior material for a vehicle.SOLUTION: A process is characterized by comprising a step for connecting between a first component 10 and a second component 20 in a fastening manner by inserting a jointing boss 50 into a jointing horn from an end 51 with the jointing boss 50 inserted into a mounting hole 25A, the jointing boss 50 being formed on the first component 10 in an integrated manner, the jointing boss projecting from a rear face 10B of the first component 10, the second component 20 having the mounting hole 25A to be inserted by the jointing boss 50, and the jointing boss 50 including a step part 90 having a diameter which is different from that of the other part.SELECTED DRAWING: Figure 2

Description

本発明は、樹脂部品の製造方法、車両用内装材の製造方法に関する。   The present invention relates to a method for manufacturing a resin component and a method for manufacturing a vehicle interior material.

従来、車両用ドアの内装を施すドアトリム（樹脂部品）は、２以上の樹脂部材が締結されて製造されることが多い。その際、例えば下記特許文献１に記載されているように、ドアポケット（第１部材）の裏面から突設した取付用ボス部（取付ボス）を内装基材（第２部材）に設けられた取付孔内に挿入し、当該取付用ボス部の先端を超音波加工によりかしめることでドアポケットを備えたドアトリムを製造する方法が採用されている。   Conventionally, door trims (resin parts) for interior decoration of a vehicle door are often manufactured by fastening two or more resin members. At that time, as described in, for example, Patent Document 1 below, a mounting boss portion (mounting boss) protruding from the back surface of the door pocket (first member) is provided on the interior base material (second member). A method of manufacturing a door trim having a door pocket by inserting into the mounting hole and caulking the tip of the mounting boss portion by ultrasonic processing is employed.

実開平５−２９３７号公報Japanese Utility Model Publication No. 5-2937

樹脂部品を製造する際、その強度確保や意匠性向上などの目的に応じて各樹脂部材に用いられる材質は適宜異なり、選択する樹脂によってその硬度は様々である。このとき、取付ボス（ひいては当該取付ボスが設けられる樹脂部材）にポリプロピレン等に代表される比較的軟らかい樹脂部材が用いられる場合は、その振動伝達性が低いため、超音波カシメ加工の際にホーンと接触する箇所付近つまり取付ボスの先端から徐々に溶け出し、理想的なカシメ固定を行うことができる。   When manufacturing resin parts, the materials used for each resin member are appropriately different depending on the purpose of securing the strength and improving the design, and the hardness varies depending on the resin selected. At this time, when a relatively soft resin member typified by polypropylene or the like is used for the mounting boss (and thus the resin member provided with the mounting boss), the vibration transmission is low, so that the horn is used during ultrasonic caulking. It gradually melts from the vicinity of the contact point, that is, from the tip of the mounting boss, and ideal crimping can be performed.

ところが、取付ボスにポリプロピレンよりも硬質の樹脂、例えばＡＢＳ樹脂やポリカーボネートＡＢＳ樹脂等が用いられる場合、その振動伝達性が高いため、取付ボスの先端ではなくその根元付近が先に発熱してしまい、カシメ加工途中で取付ボスが座屈したりホーンの凹部（キャビティ）形状に倣った成形ができない、という不具合が生じる。そのような不具合を解消するため、ホーンの加圧力を低くしカシメ時間を長くすることでホーンに接触する箇所付近から徐々に発熱させるようにすることができるものの、作業時間が長くなるため生産性に劣ってしまうだけでなく、品質不良も起こしやすい。   However, when a resin harder than polypropylene, such as ABS resin or polycarbonate ABS resin, is used for the mounting boss, its vibration transmission is high, so the vicinity of the root of the mounting boss, not the tip, heats up first, There arises a problem that the mounting boss buckles in the middle of the caulking process or that the molding according to the concave (cavity) shape of the horn cannot be performed. In order to eliminate such problems, the horn pressure can be lowered and the caulking time can be lengthened to gradually generate heat from the area in contact with the horn. In addition to being inferior, it is easy to cause quality defects.

本発明は、上記事情に基づいて完成されたものであって、様々な樹脂を用いた場合において高い生産性を実現可能とする樹脂部品の製造方法、車両用内装材の製造方法を提供することを目的とする。   The present invention has been completed based on the above circumstances, and provides a method for manufacturing a resin component and a method for manufacturing a vehicle interior material that can realize high productivity when various resins are used. With the goal.

上記課題を解決するために、本発明の樹脂部品の製造方法は、少なくとも第１部材と第２部材とが締結されてなる樹脂部品の製造方法であって、前記第１部材には、その裏面から突出する取付ボスが一体的に設けられ、前記第２部材には、前記取付ボスを挿通するための取付孔が設けられ、前記取付ボスには、その径の大きさが変化する段差部が設けられており、前記取付孔に前記取付ボスを挿通させた状態で、当該取付ボスを先端側からかしめることで前記第１部材と前記第２部材とを締結する工程を含むことを特徴とする。   In order to solve the above-described problems, a resin component manufacturing method of the present invention is a resin component manufacturing method in which at least a first member and a second member are fastened, and the first member has a back surface thereof. A mounting boss protruding from the mounting boss is integrally provided, and the second member is provided with a mounting hole for inserting the mounting boss, and the mounting boss has a step portion whose diameter changes. A step of fastening the first member and the second member by caulking the mounting boss from the distal end side in a state where the mounting boss is inserted through the mounting hole. To do.

このような樹脂部品の製造方法によると、取付ボスに段差部を設けることで、カシメ工程において当該段差部に応力が集中しやすく先に発熱することとなるため、取付ボスの根元付近が先に溶け出す事態を抑制可能となる。これにより、比較的硬質で振動伝達性が高い樹脂部材に一体的に設けられた取付ボスであっても、締結過程において取付ボスが根元付近で座屈してしまう等の不具合を回避しつつ安定したカシメ固定を施すことができ、生産性の高い樹脂部品の製造が実現可能となる。   According to such a method for manufacturing a resin component, by providing a stepped portion on the mounting boss, stress is likely to concentrate on the stepped portion in the caulking process, and heat is generated first. The situation of melting out can be suppressed. As a result, even if it is a mounting boss that is integrally provided on a resin member that is relatively hard and has high vibration transmission properties, it is stable while avoiding problems such as the mounting boss buckling near the root during the fastening process. Caulking can be fixed, and production of highly productive resin parts can be realized.

上記樹脂部品の製造方法において、前記段差部は、前記取付ボスの突出方向における前記先端寄りに設けられているものとすることができる。このような樹脂部品の製造方法によると、取付ボスの突出方向における先端寄りに段差部を設けることで、当該先端寄りに応力が集中しやすく、当該先端側から徐々に溶かし始めることが可能となる。言い換えると、取付ボスの根元付近が先に溶け出す事態を抑制することが可能となる。これにより、取付ボスの先端側から優先的に溶融させつつ安定したカシメ固定を施すことができ、生産性の高い樹脂部品の製造が実現可能となる。   In the method for manufacturing a resin component, the step portion may be provided closer to the tip in the protruding direction of the mounting boss. According to such a method for manufacturing a resin component, by providing a step portion near the tip in the protruding direction of the mounting boss, stress tends to concentrate near the tip, and it becomes possible to start melting gradually from the tip side. . In other words, it is possible to suppress a situation in which the vicinity of the base of the mounting boss is melted first. As a result, stable crimping can be performed while preferentially melting from the front end side of the mounting boss, making it possible to produce a highly productive resin part.

上記樹脂部品の製造方法において、前記段差部は角部を有するものとすることができる。このような樹脂部品の製造方法によると、当該角部に応力が集中しやすく熱がたまりやすくなる。これにより、取付ボスの根元付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。   In the method for manufacturing a resin component, the step portion may have a corner portion. According to such a method for manufacturing a resin component, stress tends to concentrate on the corner portion, and heat tends to accumulate. Thereby, the situation where the vicinity of the base of the mounting boss is melted first can be more reliably suppressed, and stable crimping can be performed.

上記樹脂部品の製造方法において、前記取付ボスは筒状とされ、前記段差部よりも前記先端側が前記段差部よりも後端側に比して薄肉に設定されているものとすることができる。また、上記樹脂部品の製造方法において、前記取付ボスは、前記段差部よりも前記先端側が前記段差部よりも後端側に比して相対的に外径が小さく設定されているものとすることができる。このような樹脂部品の製造方法によると、溶融にかかる時間を短縮することができる。   In the method for manufacturing a resin component, the mounting boss may have a cylindrical shape, and the front end side of the stepped portion may be set to be thinner than the rear end side of the stepped portion. Moreover, in the manufacturing method of the said resin component, the said mounting boss shall set the front end side rather than the said level | step-difference part as a relatively small outer diameter compared with the back end side rather than the said level | step-difference part. Can do. According to such a method for manufacturing a resin component, the time required for melting can be shortened.

上記課題を解決するために、本発明の車両用内装材の製造方法は、少なくとも第１トリムボードと第２トリムボードとが締結されてなる車両用内装材の製造方法であって、前記第１トリムボードには、その裏面から突出する取付ボスが一体的に設けられ、前記第２トリムボードには、前記取付ボスを挿通するための取付孔が設けられ、前記取付ボスには、その径の大きさが変化する段差部が設けられており、前記取付孔に前記取付ボスを挿通させた状態で、当該取付ボスを先端側からかしめることで前記第１トリムボードと前記第２トリムボードとを締結する工程を含むことを特徴とする。この場合も生産性の高い車両用内装材の製造が実現可能となる。   In order to solve the above-mentioned problems, a method for manufacturing a vehicle interior material according to the present invention is a method for manufacturing a vehicle interior material in which at least a first trim board and a second trim board are fastened. The trim board is integrally provided with a mounting boss protruding from the back surface thereof, the second trim board is provided with a mounting hole for inserting the mounting boss, and the mounting boss has a diameter of the mounting boss. A step portion of varying size is provided, and the first trim board and the second trim board are formed by caulking the mounting boss from the tip side in a state where the mounting boss is inserted through the mounting hole. Including a step of fastening Also in this case, it is possible to produce a highly productive vehicle interior material.

本発明によれば、様々な樹脂を用いた場合において高い生産性を実現可能とする樹脂部品の製造方法、車両用内装材の製造方法を提供することができる。   ADVANTAGE OF THE INVENTION According to this invention, when using various resin, the manufacturing method of the resin component which can implement | achieve high productivity and the manufacturing method of the interior material for vehicles can be provided.

実施形態１に係る車両用ドアトリムを車室内側から視た斜視図The perspective view which looked at the vehicle door trim which concerns on Embodiment 1 from the vehicle interior side アッパーボードとロアボードの締結時における締結箇所を部分的に示す断面図Sectional drawing which shows partially the fastening location at the time of fastening of an upper board and a lower board 実施形態１における取付ボスを示す図The figure which shows the attachment boss | hub in Embodiment 1. 実施形態２における取付ボスを示す図The figure which shows the attachment boss | hub in Embodiment 2. 実施形態３における取付ボスを示す図The figure which shows the attachment boss | hub in Embodiment 3. 実施形態４における取付ボスを示す図The figure which shows the attachment boss | hub in Embodiment 4. 実施形態５における取付ボスを示す図The figure which shows the attachment boss | hub in Embodiment 5. 実施形態６における取付ボスを示す図The figure which shows the attachment boss | hub in Embodiment 6.

＜実施形態１＞
以下、本発明の実施形態１について図１〜図３を参照しながら説明する。図１に示すように、車両用内装材の一例である車両用ドアトリム１（以下、「ドアトリム１」と言う）は、上部をなすアッパーボード１０（本発明の「第１部材」「第１トリムボード」に相当）と、下部をなすロアボード２０（本発明の「第２部材」「第２トリムボード」に相当）とが互いに締結されてなる樹脂部品であり、車両前後方向に延在するような１枚の板状をなしている。アッパーボード１０及びロアボード２０はともに樹脂部材とされ、アッパーボード１０の意匠面１０Ａには、ドアトリムの意匠性向上のため表皮材４０が配されている。表皮材４０は一般的に湿度による影響を受けやすく伸縮幅が大きいため、そのような伸縮に耐え得る材質として、アッパーボード１０にはＡＢＳ樹脂やポリカーボネートＡＢＳ樹脂に代表される複合体（比較的硬質で振動伝達が良いもの）が基材として採用されている。一方、ロアボード２０は、アッパーボード１０と比較して相対的に軟質な（振動伝達性が低い）ポリプロピレン樹脂等が基材として採用されている。 <Embodiment 1>
Hereinafter, Embodiment 1 of the present invention will be described with reference to FIGS. As shown in FIG. 1, a vehicle door trim 1 (hereinafter referred to as “door trim 1”), which is an example of a vehicle interior material, includes an upper board 10 (“first member” “first trim” of the present invention). The lower board 20 (corresponding to the “board”) and the lower board 20 (corresponding to the “second member” and “second trim board” of the present invention) are fastened to each other and extend in the vehicle front-rear direction. It is a single plate. Both the upper board 10 and the lower board 20 are resin members, and a skin material 40 is disposed on the design surface 10A of the upper board 10 to improve the design of the door trim. Since the skin material 40 is generally easily affected by humidity and has a large expansion / contraction width, the upper board 10 is a composite material represented by ABS resin or polycarbonate ABS resin (relatively hard) as a material that can withstand such expansion / contraction. And those with good vibration transmission) are used as base materials. On the other hand, the lower board 20 employs, as a base material, a polypropylene resin or the like that is relatively softer (lower in vibration transmission) than the upper board 10.

図２に示すように、アッパーボード１０には、その裏面１０Ｂから突出する取付ボス５０が、リブ１１を介して一体的に設けられている。取付ボス５０は円筒状をなしその外径５０Ｄが約６ｍｍとされている。また、取付ボス５０の突出方向における先端５１寄りには、その外周面５２に断面視Ｖ字状の切り込みであるＶノッチ９０（本発明の「段差部」に相当）が形成されている。Ｖノッチ９０は外周面５２の全周に亘って設けられており、その深さ９０Ｄは約０．５ｍｍとされることで外径５０Ｄが変化している。外径５０Ｄが変化する外周面５２から該Ｖノッチ９０への境界は角部９１とされている。Ｖノッチ９０が角部９１を有している、とも言える。   As shown in FIG. 2, the upper board 10 is integrally provided with mounting bosses 50 protruding from the back surface 10 </ b> B via the ribs 11. The mounting boss 50 has a cylindrical shape and an outer diameter 50D of about 6 mm. Further, a V notch 90 (corresponding to a “stepped portion” of the present invention) is formed on the outer peripheral surface 52 of the mounting boss 50 near the tip 51 in the projecting direction. The V notch 90 is provided over the entire circumference of the outer peripheral surface 52, and the outer diameter 50D is changed by the depth 90D being about 0.5 mm. A boundary from the outer peripheral surface 52 where the outer diameter 50D changes to the V notch 90 is a corner 91. It can also be said that the V notch 90 has a corner 91.

一方、ロアボード２０には、アッパーボード１０に設けられた取付ボス５０を挿通するための取付孔２５Ａが設けられている。アッパーボード１０とロアボード２０とを締結してドアトリム１を製造する際には、ロアボード２０の取付孔２５Ａにアッパーボード１０の取付ボス５０を挿通させた状態で、当該取付ボス５０を先端５１側から超音波ホーン８０を用いてかしめることでこれら２部材を締結する。このとき、アッパーボード１０には比較的硬質で振動伝達が良い基材が用いられているものの、取付ボス５０における先端５１寄りに設けられたＶノッチ９０付近に応力が集中し先に発熱するため、超音波ホーン８０の凹部８１と接触する取付ボス５０の先端面５１Ｍ付近から根元５９付近にかけて徐々に溶けていき、最終的に凹部８１の形状に倣いつつロアボード２０の裏面２０Ｂに対してかしめられる。   On the other hand, the lower board 20 is provided with an attachment hole 25A through which the attachment boss 50 provided in the upper board 10 is inserted. When the door trim 1 is manufactured by fastening the upper board 10 and the lower board 20, the mounting boss 50 is inserted from the tip 51 side in a state where the mounting boss 50 of the upper board 10 is inserted into the mounting hole 25 </ b> A of the lower board 20. These two members are fastened by caulking using an ultrasonic horn 80. At this time, although a base material that is relatively hard and has good vibration transmission is used for the upper board 10, stress concentrates near the V notch 90 provided near the tip 51 of the mounting boss 50 and heat is generated earlier. Then, it gradually melts from the vicinity of the tip end surface 51M of the mounting boss 50 contacting the concave portion 81 of the ultrasonic horn 80 to the vicinity of the root 59, and finally caulked against the back surface 20B of the lower board 20 while following the shape of the concave portion 81. .

以上説明したような車両用ドアトリム（樹脂部品）１の製造方法によると、取付ボス５０において径５０Ｄの大きさが変化するＶノッチ（段差部）９０を設けることで、カシメ工程において当該Ｖノッチ９０に応力が集中しやすく先に発熱することとなるため、取付ボス５０の根元５９付近が先に溶け出す事態を抑制可能となる。これにより、比較的硬質で振動伝達性が高い樹脂からなるアッパーボード１０に一体的に設けられた取付ボス５０であっても、締結過程において取付ボス５０が根元５９付近で座屈してしまう等の不具合を回避しつつ安定したカシメ固定を施すことができ、生産性の高い車両用ドアトリム１の製造が実現可能となる。   According to the manufacturing method of the vehicle door trim (resin component) 1 as described above, the V-notch 90 having a diameter 50D changing in the mounting boss 50 is provided, so that the V-notch 90 in the caulking process. Since stress tends to concentrate on the surface and heat is generated first, it is possible to suppress a situation in which the vicinity of the root 59 of the mounting boss 50 is melted first. Thereby, even if the mounting boss 50 is integrally provided on the upper board 10 made of a resin that is relatively hard and has high vibration transmission, the mounting boss 50 buckles in the vicinity of the root 59 in the fastening process. Stable caulking and fixing can be performed while avoiding problems, and manufacturing of the vehicle door trim 1 with high productivity can be realized.

また、取付ボス５９の突出方向における先端５１寄りに段差部９０を設けることで、取付ボス５０の先端５１寄りに応力が集中しやすく、当該先端５１側から徐々に溶かし始めることが可能となる。言い換えると、取付ボス５０の根元５９付近が先に溶け出す事態を抑制することが可能となる。これにより、先端５１寄りから優先的に溶融させつつ安定したカシメ固定を施すことができ、生産性の高い樹脂部品１の製造が実現可能となる。また、段差部９０は角部９１を有するため、当該角部９１に応力が集中しやすく熱がたまりやすくなる。これにより、取付ボス５０の根元５９付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。   Further, by providing the stepped portion 90 near the tip 51 in the protruding direction of the mounting boss 59, stress tends to concentrate near the tip 51 of the mounting boss 50, and it becomes possible to start melting gradually from the tip 51 side. In other words, it is possible to suppress a situation in which the vicinity of the root 59 of the mounting boss 50 is melted first. As a result, it is possible to perform stable caulking while preferentially melting from the vicinity of the tip 51, and it becomes possible to produce the resin component 1 with high productivity. Further, since the stepped portion 90 has the corner portion 91, stress is easily concentrated on the corner portion 91, and heat is easily collected. Thereby, the situation where the root 59 vicinity of the attachment boss | hub 50 melt | dissolves previously can be suppressed more reliably, and the stable crimp fixing can be performed.

次に、本発明の実施形態２〜６について図４〜８を参照しながら説明する。なお、これらの実施形態に係る樹脂部品の製造方法は、実施形態１に係る取付ボスを一部変更したものであって、実施形態１と重複する構成、作用、及び効果については、その説明を省略するものとする。   Next, Embodiments 2 to 6 of the present invention will be described with reference to FIGS. In addition, the manufacturing method of the resin component which concerns on these embodiments changes the attachment boss | hub which concerns on Embodiment 1 partially, Comprising: The structure, an effect | action, and effect which overlap with Embodiment 1 are demonstrated. Shall be omitted.

＜実施形態２＞
図４に示すように、実施形態２における取付ボス２５０は円筒状とされ、先端２５１寄りの上部２５５（本発明の「先端側」に相当）が、根元２５９寄りの下部２５６（本発明の「後端側」に相当）に比して薄肉に設定されている。取付ボス２５０は、上部２５５が下部２５６に比して相対的に外径２５０Ｄが小さく設定されている、とも言える。上部２５５の外径２５５Ｄと下部２５６の外径２５６Ｄとの差により段差部２９０が形成されている。段差部２９０は、略水平面とされる段差面２９０Ｍを有し、当該段差面２９０Ｍとこの段差面２９０Ｍと交差する方向に延びる上部２５５における下端部２５４とによって形成される角部２９１を有している。段差部２９０は取付ボス２５０の先端２５１寄りに設けられており、その幅２９０Ｄは約０．５ｍｍとされている。このような取付ボス２５０を用いてカシメ固定を行う場合においても、角部２９１に応力が集中しやすく熱がたまりやすくなり、取付ボス２５０の根元２５９付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。 <Embodiment 2>
As shown in FIG. 4, the mounting boss 250 in the second embodiment has a cylindrical shape, and an upper portion 255 near the tip 251 (corresponding to the “tip side” of the present invention) is a lower portion 256 near the root 259 (“ Is equivalent to “rear end side”). It can be said that the mounting boss 250 has an upper diameter 255 that is relatively smaller in outer diameter 250 </ b> D than the lower portion 256. A step 290 is formed by the difference between the outer diameter 255D of the upper portion 255 and the outer diameter 256D of the lower portion 256. The step portion 290 has a step surface 290M that is a substantially horizontal plane, and has a corner portion 291 formed by the step surface 290M and a lower end portion 254 in an upper portion 255 that extends in a direction intersecting the step surface 290M. Yes. The step 290 is provided near the tip 251 of the mounting boss 250, and its width 290D is about 0.5 mm. Even when caulking and fixing is performed using such mounting bosses 250, stress tends to concentrate on the corners 291 and heat tends to accumulate, and the situation in which the vicinity of the root 259 of the mounting bosses 250 melts out more reliably is suppressed. In addition, stable caulking and fixing can be performed.

＜実施形態３＞
図５に示すように、実施形態３における取付ボス３５０の基本的な構成は実施形態２における取付ボス２５０と同様であり、円筒状とされ、先端３５１寄りの上部３５５が根元３５９寄りの下部３５６に比して薄肉に（上部３５５が下部３５６に対して相対的に外径３５０Ｄが小さく）設定されている。また、上部３５５の外径３５５Ｄと下部３５６の外径３５６Ｄとの差により段差部３９０が形成されている点、また段差部３９０は、略水平面とされる段差面３９０Ｍを有し、当該段差面３９０Ｍとこの段差面３９０Ｍと交差する方向に延びる上部３５５における下端部３５４とによって形成される角部３９１を有している点も実施形態２における取付ボス２５０と共通しているが、段差部３９０が根元３５９寄りに設けられており、当該取付ボス３５０の突出方向における上部３５５の長さが下部３５６の長さよりも長く設定されている点が異なる。段差部３９０の幅３９０Ｄは約０．５ｍｍとされている。このような取付ボス３５０を用いてカシメ固定を行う場合においても、角部３９１に応力が集中しやすく熱がたまりやすくなり、取付ボス３５０の根元３５９付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。 <Embodiment 3>
As shown in FIG. 5, the basic configuration of the mounting boss 350 in the third embodiment is the same as that of the mounting boss 250 in the second embodiment, is cylindrical, and the upper portion 355 near the tip 351 is the lower portion 356 near the root 359. Is set to be thinner (the upper portion 355 has a smaller outer diameter 350D relative to the lower portion 356). Further, the step 390 is formed by the difference between the outer diameter 355D of the upper portion 355 and the outer diameter 356D of the lower portion 356, and the step portion 390 has a step surface 390M that is a substantially horizontal plane. The step 390 is similar to the mounting boss 250 in the second embodiment in that it has a corner portion 391 formed by 390M and a lower end portion 354 of the upper portion 355 extending in a direction intersecting the step surface 390M. Is provided closer to the root 359, and the length of the upper part 355 in the protruding direction of the mounting boss 350 is set to be longer than the length of the lower part 356. The width 390D of the step portion 390 is about 0.5 mm. Even when caulking is fixed using such mounting bosses 350, stress is likely to concentrate on the corners 391, and heat tends to accumulate, so that the situation where the vicinity of the root 359 of the mounting bosses 350 is first melted can be more reliably suppressed. In addition, stable caulking and fixing can be performed.

＜実施形態４＞
図６に示すように、実施形態４における取付ボス４５０は筒状とされ、根元４５９寄りの下部４５６は円筒状とされる一方、先端４５１寄りの上部４５５は、当該取付ボス４５０の突出方向に沿って部分的に切り落とされた形状とされている。これにより、上部４５５の長手方向における断面視は、外径４５０Ｄの両側が欠けた形状をなしている。このように欠けた分だけ上部４５５は下部４５６に比して薄肉に（外径４５０Ｄが小さく）設定されている。上部４５５が部分的に切り落とされたことで、上部４５５と下部４５６の境には上部４５５の外径４５５Ｄと下部４５６の外径４５６Ｄとの差により段差部４９０が形成されている。段差部４９０は、略水平面とされる段差面４９０Ｍを有し、当該段差面４９０Ｍとこの段差面４９０Ｍと交差する方向に延びる上部４５５における下端部４５４とによって形成される角部４９１を有している。段差部４９０は取付ボスの先端４５１寄りに設けられており、その幅４９０Ｄは約０．５ｍｍとされている。このような取付ボス４５０を用いてカシメ固定を行う場合においても、角部４９１に応力が集中しやすく熱がたまりやすくなり、取付ボス４５０の根元４５９付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。 <Embodiment 4>
As shown in FIG. 6, the mounting boss 450 in the fourth embodiment is cylindrical, and the lower portion 456 near the root 459 is cylindrical, while the upper portion 455 near the tip 451 is in the protruding direction of the mounting boss 450. It is the shape partly cut off along. Thereby, the cross-sectional view in the longitudinal direction of the upper part 455 has a shape in which both sides of the outer diameter 450D are missing. The upper portion 455 is set to be thinner (the outer diameter 450D is smaller) than the lower portion 456 by the amount thus missing. Since the upper portion 455 is partially cut off, a step 490 is formed at the boundary between the upper portion 455 and the lower portion 456 due to the difference between the outer diameter 455D of the upper portion 455 and the outer diameter 456D of the lower portion 456. The step portion 490 has a step surface 490M that is a substantially horizontal plane, and has a corner portion 491 formed by the step surface 490M and a lower end portion 454 in an upper portion 455 extending in a direction intersecting the step surface 490M. Yes. The step 490 is provided near the tip 451 of the mounting boss, and its width 490D is about 0.5 mm. Even when caulking and fixing is performed using such mounting bosses 450, stress tends to concentrate on the corners 491 and heat tends to accumulate, and the situation in which the vicinity of the base 459 of the mounting boss 450 is melted first is more reliably suppressed. In addition, stable caulking and fixing can be performed.

＜実施形態５＞
図７に示すように、実施形態５における取付ボス５５０は筒状とされ、根元５５９寄りの下部５５６は円筒状とされる一方、先端５５１寄りの上部５５５は、その外周面５５２における４面がその突出方向に沿って切り落とされた形状とされている。言い換えると、上部５５５はその内方に円柱状の空洞部５７０を有した四角柱とされている。このように外周面５５２が部分的に切り落とされたことにより上部５５５は下部５５６に比して薄肉に（外径５５０Ｄが小さく）設定されている。上部５５５が部分的に切り落とされたことで上部５５５と下部５５６の境には上部５５５の外径５５５Ｄと下部５５６の外径５５６Ｄとの差により段差部５９０が形成されている。段差部５９０は、略水平面とされる段差面５９０Ｍを有し、当該段差面５９０Ｍとこの段差面５９０Ｍと交差する方向に延びる上部５５５における下端部５５４とによって形成される角部５９１を有している。段差部５９０は取付ボス５５０の先端５５１寄りに設けられている。このような取付ボス５５０を用いてカシメ固定を行う場合においても、角部５９１に応力が集中しやすく熱がたまりやすくなり、取付ボス５５０の根元５５９付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。 <Embodiment 5>
As shown in FIG. 7, the mounting boss 550 in the fifth embodiment is cylindrical, and the lower portion 556 near the root 559 is cylindrical, while the upper portion 555 near the tip 551 has four surfaces on the outer peripheral surface 552. The shape is cut off along the protruding direction. In other words, the upper part 555 is a quadrangular prism having a cylindrical cavity 570 inside thereof. Thus, the outer peripheral surface 552 is partially cut off, so that the upper portion 555 is set to be thinner (the outer diameter 550D is smaller) than the lower portion 556. Since the upper portion 555 is partially cut off, a step portion 590 is formed at the boundary between the upper portion 555 and the lower portion 556 due to the difference between the outer diameter 555D of the upper portion 555 and the outer diameter 556D of the lower portion 556. The step portion 590 has a step surface 590M that is a substantially horizontal plane, and has a corner portion 591 formed by the step surface 590M and a lower end portion 554 of an upper portion 555 that extends in a direction intersecting the step surface 590M. Yes. The step portion 590 is provided near the tip 551 of the mounting boss 550. Even when caulking is fixed using such a mounting boss 550, stress tends to concentrate on the corner 591 and heat tends to accumulate, so that the situation in which the vicinity of the root 559 of the mounting boss 550 is first melted is more reliably suppressed. In addition, stable caulking and fixing can be performed.

＜実施形態６＞
図８に示すように、実施形態６における取付ボス６５０は、その内方に円柱状の空洞部６７０を有する円筒状をなしている。取付ボス６５０の外径６５０Ｄは、先端６５１から根元６５９にかけて均一とされている一方、内径６７０ＩＤは、取付ボス６５０の先端６５１寄りにおける内径６７５ＩＤが、根元６５９寄りにおける内径６７６ＩＤよりも大きく設定される。これにより、取付ボス６５０の上部６５５が下部６５６に比して薄肉に設定されている。この内径６７５ＩＤと内径６７６ＩＤとの差により段差部６９０が形成されている。空洞部６７０のうち、段差部６９０よりも先端６５１寄りを上側空洞部６７５とし、根元６５９寄りを下側空洞部６７６とする。段差部６９０は、略水平面とされる段差面６９０Ｍを有し、当該段差面６９０Ｍとこの段差面６９０Ｍと交差する方向に延びる上側空洞部６７５の内壁６７５Ｋにおける下端部６７４とによって形成される角部６９１を有している。また、段差部６９０は、段差面６９０Ｍとこの段差面６９０Ｍと交差する方向に延びる下側空洞部６７６の内壁６７６Ｋにおける上端部６７２とによって形成される角部６９２を有している。段差部６９０は取付ボス６５０の先端６５１寄りに設けられている。このような取付ボス６５０を用いてカシメ固定を行う場合においても、角部６９１あるいは角部６９２に応力が集中しやすく熱がたまりやすくなり、取付ボス６５０の根元６５９付近が先に溶け出す事態をより確実に抑制し、安定したカシメ固定を施すことができる。 <Embodiment 6>
As shown in FIG. 8, the mounting boss 650 in the sixth embodiment has a cylindrical shape having a columnar cavity 670 inside thereof. The outer diameter 650D of the mounting boss 650 is uniform from the tip 651 to the root 659, while the inner diameter 670ID is set such that the inner diameter 675ID near the tip 651 of the mounting boss 650 is larger than the inner diameter 676ID near the root 659. . Thereby, the upper portion 655 of the mounting boss 650 is set to be thinner than the lower portion 656. A step 690 is formed by the difference between the inner diameter 675ID and the inner diameter 676ID. Of the hollow portion 670, a portion closer to the tip 651 than the step portion 690 is an upper cavity portion 675, and a portion closer to the root 659 is a lower cavity portion 676. The step portion 690 has a step surface 690M that is a substantially horizontal surface, and a corner portion formed by the step surface 690M and a lower end portion 674 of the inner wall 675K of the upper cavity portion 675 extending in a direction intersecting the step surface 690M. 691. Further, the step portion 690 has a corner portion 692 formed by the step surface 690M and the upper end portion 672 of the inner wall 676K of the lower cavity portion 676 extending in a direction intersecting the step surface 690M. The step portion 690 is provided near the tip 651 of the mounting boss 650. Even when caulking and fixing is performed using such a mounting boss 650, stress tends to concentrate on the corner portion 691 or the corner portion 692, and heat tends to accumulate, and the vicinity of the root 659 of the mounting boss 650 melts first. It can suppress more reliably and can perform stable caulking fixation.

実施形態２〜６に係る車両用ドアトリム（樹脂部品）の製造方法によると、取付ボス２５０，３５０，４５０，５５０，６５０の段差部２９０，３９０，４９０，５９０，６９０よりも先端側２５５，３５５，４５５，５５５，６５５が、段差部２９０，３９０，４９０，５９０，６９０よりも後端側２５６，３５６，４５６，５５６，６５６に比して薄肉に設定されている（実施形態２〜５においては、段差部２９０，３９０，４９０，５９０よりも先端側２５５，３５５，４５５，５５５の外径２５５Ｄ，３５５Ｄ，４５５Ｄ，５５５Ｄが、段差部２９０，３９０，４９０，５９０よりも後端側２５６，３５６，４５６，５５６の外径２５６Ｄ，３５６Ｄ，４５６Ｄ，５５６Ｄに比して小さく設定されている）ことにより、溶融にかかる時間を短縮することができる。   According to the method for manufacturing a vehicle door trim (resin part) according to the second to sixth embodiments, the front side 255, 355 of the step 290, 390, 490, 590, 690 of the mounting boss 250, 350, 450, 550, 650. , 455, 555, 655 are set to be thinner than the rear end sides 256, 356, 456, 556, 656 with respect to the step portions 290, 390, 490, 590, 690 (in the second to fifth embodiments). The outer diameters 255D, 355D, 455D, and 555D of the front end sides 255, 355, 455, and 555 from the step portions 290, 390, 490, and 590 are rear end sides 256 and the step portions 290, 390, 490, and 590, respectively. 356, 456, and 556 are set smaller than the outer diameters 256D, 356D, 456D, and 556D). It can be shortened between.

＜その他の実施形態＞
本発明は、上記記述及び図面によって説明した実施形態に限定されるものではなく、例えば次のような実施形態も本発明の技術的範囲に含まれ、さらに、下記以外にも要旨を逸脱しない範囲内で種々変更して実施することができる。
（１）上記実施形態では、アッパーボードとロアボードとが締結されてなるドアトリムの製造方法として説明したが、本願発明の製造方法を、表皮が巻かれた加飾部材とメインボードとを締結して内装材を製造する際等に用いても、その技術的効果は発揮される。 <Other embodiments>
The present invention is not limited to the embodiments described with reference to the above description and drawings. For example, the following embodiments are also included in the technical scope of the present invention, and further, the scope not deviating from the gist other than the following. It can be implemented with various changes.
(1) In the above-described embodiment, the method for manufacturing a door trim in which the upper board and the lower board are fastened has been described. However, the manufacturing method of the invention of the present application is performed by fastening the decorative member around which the skin is wound and the main board. Even when used for manufacturing interior materials, the technical effect is exhibited.

１…車両用ドアトリム（樹脂部品）、１０…アッパーボード（第１部材）、２０…ロアボード（第２部材）、２５Ａ…取付孔、５０…取付ボス、５０Ｄ…外径（径）、５１…取付ボス５０の先端、９０…段差部   DESCRIPTION OF SYMBOLS 1 ... Vehicle door trim (resin part), 10 ... Upper board (1st member), 20 ... Lower board (2nd member), 25A ... Mounting hole, 50 ... Mounting boss, 50D ... Outer diameter (diameter), 51 ... Installation Tip of boss 50, 90 ... step

Claims (6)

少なくとも第１部材と第２部材とが締結されてなる樹脂部品の製造方法であって、
前記第１部材には、その裏面から突出する取付ボスが一体的に設けられ、
前記第２部材には、前記取付ボスを挿通するための取付孔が設けられ、
前記取付ボスには、その径の大きさが変化する段差部が設けられており、
前記取付孔に前記取付ボスを挿通させた状態で、当該取付ボスを先端側からかしめることで前記第１部材と前記第２部材とを締結する工程を含む樹脂部品の製造方法。 A method of manufacturing a resin component in which at least a first member and a second member are fastened,
The first member is integrally provided with a mounting boss protruding from the back surface thereof,
The second member is provided with a mounting hole for inserting the mounting boss,
The mounting boss is provided with a step portion whose diameter changes.
A method for manufacturing a resin part, comprising: a step of fastening the first member and the second member by caulking the mounting boss from the tip side in a state where the mounting boss is inserted through the mounting hole. 前記段差部は、前記取付ボスの突出方向における前記先端寄りに設けられていることを特徴とする請求項１に記載の樹脂部品の製造方法。   The method for manufacturing a resin component according to claim 1, wherein the stepped portion is provided closer to the tip in the protruding direction of the mounting boss. 前記段差部は角部を有することを特徴とする請求項１又は請求項２に記載の樹脂部品の製造方法。   The method for manufacturing a resin component according to claim 1, wherein the stepped portion has a corner portion. 前記取付ボスは筒状とされ、前記段差部よりも前記先端側が前記段差部よりも後端側に比して薄肉に設定されていることを特徴とする請求項１から請求項３のいずれか一項に記載の樹脂部品の製造方法。   The mounting boss has a cylindrical shape, and the tip end side of the stepped portion is set to be thinner than the stepped portion compared to the rear end side. The manufacturing method of the resin component of one term. 前記取付ボスは、前記段差部よりも前記先端側が前記段差部よりも後端側に比して相対的に外径が小さく設定されていることを特徴とする請求項１から請求項４のいずれか一項に記載の樹脂部品の製造方法。   The outer diameter of the mounting boss is set to be relatively smaller than the stepped portion on the tip side than on the rear end side of the stepped portion. A method for producing a resin component according to claim 1. 少なくとも第１トリムボードと第２トリムボードとが締結されてなる車両用内装材の製造方法であって、
前記第１トリムボードには、その裏面から突出する取付ボスが一体的に設けられ、
前記第２トリムボードには、前記取付ボスを挿通するための取付孔が設けられ、
前記取付ボスには、その径の大きさが変化する段差部が設けられており、
前記取付孔に前記取付ボスを挿通させた状態で、当該取付ボスを先端側からかしめることで前記第１トリムボードと前記第２トリムボードとを締結する工程を含む車両用内装材の製造方法。 A method of manufacturing a vehicle interior material in which at least a first trim board and a second trim board are fastened,
The first trim board is integrally provided with a mounting boss protruding from the back surface thereof,
The second trim board is provided with a mounting hole for inserting the mounting boss,
The mounting boss is provided with a step portion whose diameter changes.
A vehicle interior material manufacturing method including a step of fastening the first trim board and the second trim board by caulking the mounting boss from the front end side in a state where the mounting boss is inserted into the mounting hole. .
JP2017007370A 2017-01-19 2017-01-19 Process for producing resin product and process for producing interior material for vehicles Withdrawn JP2018114689A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10894517B2 (en) 2019-05-03 2021-01-19 Ford Global Technologies, Llc Doghouse retainer, door assembly incorporating that doghouse retainer and method of adjusting a gap between a first component and a second component

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10894517B2 (en) 2019-05-03 2021-01-19 Ford Global Technologies, Llc Doghouse retainer, door assembly incorporating that doghouse retainer and method of adjusting a gap between a first component and a second component

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