JP2016043500A - Bond structure of synthetic resin component - Google Patents

Bond structure of synthetic resin component Download PDF

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JP2016043500A
JP2016043500A JP2014167124A JP2014167124A JP2016043500A JP 2016043500 A JP2016043500 A JP 2016043500A JP 2014167124 A JP2014167124 A JP 2014167124A JP 2014167124 A JP2014167124 A JP 2014167124A JP 2016043500 A JP2016043500 A JP 2016043500A
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boss portion
boss
intermediate member
lower member
synthetic resin
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JP6393552B2 (en
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智也 佐久間
Tomoya Sakuma
智也 佐久間
翔一 長谷川
Shoichi Hasegawa
翔一 長谷川
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Kasai Kogyo Co Ltd
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Kasai Kogyo Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—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
    • B29C65/02—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
    • 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
    • B29C66/1122—Single lap to lap joints, i.e. overlap 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
    • B29C66/20—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
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/40—General aspects of joining substantially flat articles, e.g. plates, sheets or web-like materials; Making flat seams in tubular or hollow articles; Joining single elements to substantially flat surfaces
    • B29C66/41—Joining substantially flat articles ; Making flat seams in tubular or 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
    • B29C66/50—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
    • B29C66/81—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps
    • B29C66/814—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps
    • B29C66/8141—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined
    • B29C66/81411—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat
    • B29C66/81421—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave
    • B29C66/81423—General aspects of the pressing elements, i.e. the elements applying pressure on the parts to be joined in the area to be joined, e.g. the welding jaws or clamps characterised by the design of the pressing elements, e.g. of the welding jaws or clamps characterised by the surface geometry of the part of the pressing elements, e.g. welding jaws or clamps, coming into contact with the parts to be joined characterised by its cross-section, e.g. transversal or longitudinal, being non-flat being convex or concave being concave
    • 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
    • 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
    • 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
    • B29L2031/3026—Arm-rests

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

Abstract

PROBLEM TO BE SOLVED: To provide a bond structure of synthetic resin components capable of bonding the overlapped part of a lower member, an upper member and an intermediate member inserted in between by thermal caulking using a boss deposition method without causing dislocation of the intermediate member.SOLUTION: A boss 4 of a lower member 1 and an annular boss 7 of an intermediate member 2 pass through an upper member 3 and protrude concentrically, which are bonded to one piece by thermal caulking. The lower member 1, the intermediate member 2 and the upper member 3 are thus bonded in a deposited state. This bond structure prevents dislocation of the intermediate member 2 from the normal position that causes a mismatch of a parting line leading to poor appearance and further prevents external-vibration-caused dislocation of the intermediate member 2 leading to unpleasant low-grade sound.SELECTED DRAWING: Figure 3

Description

本発明は、複数の合成樹脂部品の相互を重合して、該重合部分をボス溶着工法により熱かしめして結合する合成樹脂部品の結合構造に関する。   The present invention relates to a synthetic resin component bonding structure in which a plurality of synthetic resin components are polymerized and bonded by heat caulking the polymerized portions by a boss welding method.

図５、図６は従来の合成樹脂部品の結合構造の一例を示すもので、本例では熱可塑性樹脂材からなる３枚の平板状の合成樹脂部品を部分的に重合して、該重合部分をボス溶着工法により熱かしめして結合する場合を示している。   FIG. 5 and FIG. 6 show an example of a conventional synthetic resin component bonding structure. In this example, three flat synthetic resin components made of a thermoplastic resin material are partially polymerized to produce the polymerized portion. This shows a case where the boss is bonded by heat caulking by a boss welding method.

下側部材１、中間部材２、および上側部材３はそれらの連結部分を相互に重合してあって、下側部材１にはボス部４を突設してある一方、中間部材２および上側部材３にはボス挿通孔５、６を形成して、これらボス挿通孔５、６にボス部４を挿通してある。   The lower member 1, the intermediate member 2, and the upper member 3 are formed by superimposing their connecting portions, and the lower member 1 has a boss 4 protruding therefrom, while the intermediate member 2 and the upper member 3 3, boss insertion holes 5 and 6 are formed, and the boss portion 4 is inserted into the boss insertion holes 5 and 6.

そして、ボス部４の突出端部を例えば超音波溶着機を用いて、そのホーンにより所要の押圧力と超音波振動を付加して発生する摩擦熱で溶融し、ホーンの成形凹部の内面形状に見合った熱かしめ部Ｗを形成して、これら３部材１、２、３を熱かしめにより結合するようにしている。   Then, the projecting end of the boss 4 is melted by the frictional heat generated by applying the required pressing force and ultrasonic vibration by the horn using, for example, an ultrasonic welding machine, and the inner shape of the molding recess of the horn is obtained. Matching heat caulking portions W are formed, and these three members 1, 2, and 3 are coupled by heat caulking.

このような結合構造は、例えば自動車のドアトリムにおけるロアトリムとセンタートリムとドアアームレストとの重ね合わせ結合部分などに用いられている。この類似構造は、例えば特許文献１および特許文献２に示されている。   Such a coupling structure is used, for example, in an overlapping coupling portion of a lower trim, a center trim, and a door armrest in a door trim of an automobile. This similar structure is shown in Patent Document 1 and Patent Document 2, for example.

実開平４−１１３１２２号公報Japanese Utility Model Publication No. 4-113122 特開２０００−６７３３７号公報JP 2000-67337 A

前記従来の結合構造では、３部材１、２、３の組付け性を考慮して中間部材２と上側部材３のボス挿通孔５、６を、部材相互の成形誤差を十分に吸収し得るようにボス部４よりも大径に形成する必要がある。   In the conventional connecting structure, the boss insertion holes 5 and 6 of the intermediate member 2 and the upper member 3 can be sufficiently absorbed in consideration of the assembling property of the three members 1, 2 and 3. It is necessary to form a larger diameter than the boss part 4.

一方、ボス部４の熱かしめ処理でボス部４と上側部材３とは溶着されるが、中間部材２はボス部４とは非溶着関係にあるため走行時振動等で中間部材２に図６Ａ、図６Ｂに示すようにずれを生じ易く、これが低吸音の発生原因となってしまう不具合を生じる。   On the other hand, the boss portion 4 and the upper member 3 are welded by the heat caulking process of the boss portion 4, but the intermediate member 2 is not welded to the boss portion 4. As shown in FIG. 6B, a shift is likely to occur, which causes a problem that causes low sound absorption.

そこで、本発明は下側部材と上側部材との間に介在する中間部材にずれを生じることなく、それらの重合部分をボス溶着工法により熱かしめして結合することができる合成樹脂部品の結合構造を提供するものである。   Therefore, the present invention provides a synthetic resin component joining structure capable of joining the superposed portions by heat caulking by a boss welding method without causing a shift in the intermediate member interposed between the lower member and the upper member. Is to provide.

本発明に係る合成樹脂部品の結合構造は、下側部材に突設したボス部を、該下側部材に重合配置した中間部材と上側部材とに挿通し、該ボス部の突出端部を熱かしめして結合する構造であって、   In the synthetic resin component joining structure according to the present invention, the boss portion protruding from the lower member is inserted into the intermediate member and the upper member that are superposed on the lower member, and the protruding end portion of the boss portion is heated. It is a structure that is joined by caulking,

前記中間部材に、前記下側部材のボス部と共に前記上側部材を挿通して同心的に突出する環状のボス部を設け、   The intermediate member is provided with an annular boss portion that protrudes concentrically through the upper member together with the boss portion of the lower member,

前記中間部材の環状のボス部を前記下側部材のボス部と一体に熱かしめして結合したことを主要な特徴としている。   The main feature is that the annular boss portion of the intermediate member is joined by heat caulking integrally with the boss portion of the lower member.

上述の中間部材の環状のボス部はその突出量を前記下側部材のボス部の突出量よりも低く設定し、該下側部材のボス部が熱かしめ治具の成形凹部に先当たりするようにすることができる。   The projecting amount of the annular boss portion of the intermediate member described above is set lower than the projecting amount of the boss portion of the lower member so that the boss portion of the lower member comes first in contact with the molding concave portion of the heat caulking jig. Can be.

また、この熱かしめを超音波溶着機を用いてそのホーンで所要の形状、大きさの熱かしめ部を形成することができる。   Moreover, a heat caulking part having a required shape and size can be formed with the horn using an ultrasonic welding machine.

本発明によれば、下側部材のボス部と中間部材の環状のボス部とが上側部材を挿通して同心的に突出してそれらを一体に熱かしめして結合してあるため、これら下側部材と中間部材および上側部材とを相互に溶着関係の結合構造とすることができる。   According to the present invention, the boss portion of the lower member and the annular boss portion of the intermediate member protrude through the upper member concentrically and are integrally bonded by heat caulking. The member, the intermediate member, and the upper member can be bonded together.

この結果、中間部材が正規位置からずれてパーティングラインが不整合となって外観を損なったり、外部振動でずれ動いて不快な低級音を生じたりするのを回避できることができる。   As a result, it can be avoided that the intermediate member is displaced from the normal position and the parting line is inconsistent and the appearance is deteriorated, or the external member is displaced due to external vibration to cause an unpleasant lower sound.

上述の中間部材の環状のボス部の突出量を下側部材のボス部の突出量よりも低く設定して、該下側部材のボス部を熱かしめ治具の成形凹部に先当たりさせれば、ボス部の熱溶着が中心側から多段に行われてボス溶着による熱かしめをスムーズに行わせることができる。   If the protruding amount of the annular boss portion of the intermediate member is set lower than the protruding amount of the boss portion of the lower member, the boss portion of the lower member is brought into contact with the molding recess of the heat caulking jig. The heat welding of the boss portion is performed in multiple stages from the center side, so that the heat caulking by the boss welding can be performed smoothly.

また、熱かしめを超音波溶着機を用いて行う場合に、ホーンによる溶着加工中に超音波振動で中間部材がずれ動いて結合不良を生じるのを回避することもできる。   In addition, when heat caulking is performed using an ultrasonic welding machine, it is possible to prevent the intermediate member from being displaced due to ultrasonic vibration during welding with a horn and causing poor bonding.

本発明の第１実施形態における複数の合成樹脂部品の配置関係を示す分解斜視図。The disassembled perspective view which shows the arrangement | positioning relationship of the some synthetic resin component in 1st Embodiment of this invention. 第１実施形態のボス溶着による熱かしめ前の状態を示す断面図。Sectional drawing which shows the state before the heat crimping by the boss | hub welding of 1st Embodiment. 第１実施形態のボス溶着による熱かしめ後の状態を示す断面図。Sectional drawing which shows the state after heat caulking by the boss | hub welding of 1st Embodiment. 本発明の第２実施形態を示す図２と同様の断面図。Sectional drawing similar to FIG. 2 which shows 2nd Embodiment of this invention. 従来の構造の一例を示す図１と同様の分解斜視図。The exploded perspective view similar to FIG. 1 which shows an example of the conventional structure. 従来の構造のボス溶着による熱かしめ後における中間部材の正常状態とずれ状態とを（Ａ）、（Ｂ）にて示す断面図。Sectional drawing which shows the normal state and shift | offset | difference state of an intermediate member after heat caulking by the boss welding of the conventional structure in (A) and (B).

以下、本発明の実施形態を図面と共に前記従来の構造と同一部分に同一符号を付して詳述する。   Hereinafter, embodiments of the present invention will be described in detail with the same reference numerals as those in the conventional structure together with the drawings.

図１に示す第１実施形態は熱可塑性樹脂材からなる３枚の平板状の合成樹脂部品を部分的に重合して、該重合部分をボス溶着工法により熱かしめして結合する場合を示している。   The first embodiment shown in FIG. 1 shows a case where three flat synthetic resin parts made of a thermoplastic resin material are partially polymerized, and the polymerized parts are bonded by heat caulking by a boss welding method. Yes.

下側部材１、中間部材２、および上側部材３は図２に示すようにそれらの連結部分を相互に重合してあって、下側部材１にはボス部４を突設してある一方、中間部材２および上側部材３にはボス挿通孔５、６を形成して、これらボス挿通孔５、６にボス部４を挿通してある。   The lower member 1, the intermediate member 2, and the upper member 3 are superposed on each other as shown in FIG. 2, and the lower member 1 has a boss portion 4 protruding therefrom, Boss insertion holes 5 and 6 are formed in the intermediate member 2 and the upper member 3, and the boss portion 4 is inserted into the boss insertion holes 5 and 6.

ボス部４は端部側から溶融し易いように円筒状に形成することによって、下側部材１の表面側（図１、図２の下側）のヒケ防止と樹脂材料の軽減化を図ると共に、突出端部に対する後述するホーン１０のセッティングを行い易いようにしている。   The boss portion 4 is formed in a cylindrical shape so as to be easily melted from the end side, thereby preventing sink marks on the surface side of the lower member 1 (lower side in FIGS. 1 and 2) and reducing the resin material. The setting of the horn 10 to be described later with respect to the protruding end is facilitated.

中間部材２のボス挿通孔５は、下側部材１のボス部４を遊挿可能なように該ボス部４よりも大径に形成して良好な組付け性が得られるようにしてあり、その上側の孔縁部にはボス部４と共に上側部材３を挿通して上側に向けて同心的に突出する環状のボス部７を突設してある。   The boss insertion hole 5 of the intermediate member 2 is formed so as to have a larger diameter than the boss portion 4 so that the boss portion 4 of the lower member 1 can be loosely inserted, and good assemblability is obtained. An annular boss portion 7 that protrudes concentrically upward is inserted through the upper member 3 together with the boss portion 4 at the upper hole edge.

従って、上側部材３のボス挿通孔６は、この環状のボス部７を遊挿可能なように該環状のボス部７よりも大径に形成して良好な組付け性が得られるようにしている。   Accordingly, the boss insertion hole 6 of the upper member 3 is formed to have a larger diameter than the annular boss portion 7 so that the annular boss portion 7 can be loosely inserted, so that a good assembling property can be obtained. Yes.

そして、この中間部材２の環状のボス部７を図３に熱かしめ部Ｗとして示すように下側部材１のボス部４と一体に上側部材３のボス挿通孔６の周縁部上に熱かしめして、下側部材１と中間部材２と上側部材３とを結合している。   Then, the annular boss portion 7 of the intermediate member 2 is heated on the peripheral portion of the boss insertion hole 6 of the upper member 3 integrally with the boss portion 4 of the lower member 1 as shown in FIG. The lower member 1, the intermediate member 2, and the upper member 3 are joined together.

ボス部４および環状のボス部７の上側部材３からの突出量は、十分な結合強度を確保できる大きさの熱かしめ部Ｗが得られるように任意に設定される。   The amount of protrusion of the boss portion 4 and the annular boss portion 7 from the upper member 3 is arbitrarily set so as to obtain a heat-caulked portion W having a size that can ensure sufficient bonding strength.

本実施形態では図２に示すように中間部材２の環状のボス部７の突出量を下側部材１のボス部４の突出量よりも低く設定して、該下側部材１のボス部４が熱かしめ治具１０の成形凹部１１に先当たりするようにしている。   In this embodiment, as shown in FIG. 2, the protruding amount of the annular boss 7 of the intermediate member 2 is set lower than the protruding amount of the boss 4 of the lower member 1, and the boss 4 of the lower member 1 is set. Is first brought into contact with the molding recess 11 of the heat caulking jig 10.

上述の熱かしめ部Ｗを成形するボス溶着工法として公知の超音波溶着機を用いることができる。   A known ultrasonic welding machine can be used as a boss welding method for forming the above-described heat caulking portion W.

図２に例示した熱かしめ治具１０はこの超音波溶着機のホーンを示しており、ホーン１０の成形凹部１１は所要の容積の略半球状凹部として形成してあって、その凹部中心にはボス部４の端部の加振，溶融を促進するための突起１２を突設してある。   A heat caulking jig 10 illustrated in FIG. 2 shows a horn of this ultrasonic welding machine, and a molding concave portion 11 of the horn 10 is formed as a substantially hemispherical concave portion having a required volume. Protrusions 12 are provided to promote vibration and melting at the end of the boss 4.

このホーン１０の成形凹部１１を図２に示すように下側部材１のボス部４の突出端部にセットする場合に、突起１２がボス部４の筒状の端部内に進入することにより自動調芯されてセッティングを容易に行うことができる。   When the molding recess 11 of the horn 10 is set at the protruding end of the boss 4 of the lower member 1 as shown in FIG. 2, the protrusion 12 enters the cylindrical end of the boss 4 automatically. It is aligned and can be set easily.

そこで、このホーン１０によりボス部４の突出端部に所要の押圧力と超音波振動を付加すると、その接触部に発生する摩擦熱でボス部４の突出端部が溶融する。   Therefore, when a required pressing force and ultrasonic vibration are applied to the protruding end portion of the boss portion 4 by the horn 10, the protruding end portion of the boss portion 4 is melted by frictional heat generated at the contact portion.

そして、このボス部４の突出端部の溶融に続いてホーン１０の成形凹部１１が中間部材２の環状のボス部７の外周縁側から接触して、該環状のボス部７も一体となって溶融することによって、ホーン１０の成形凹部１１の内面形状に見合った熱かしめ部Ｗが形成される。   Then, following the melting of the protruding end portion of the boss portion 4, the molding concave portion 11 of the horn 10 comes into contact with the outer peripheral edge side of the annular boss portion 7 of the intermediate member 2, and the annular boss portion 7 is also integrated. By melting, a heat caulking portion W commensurate with the shape of the inner surface of the molding recess 11 of the horn 10 is formed.

これにより、これら下側部材１と中間部材２および上側部材３の３部材を熱かしめによりしっかりと結合することができる。   As a result, the lower member 1, the intermediate member 2, and the upper member 3 can be firmly joined by heat caulking.

以上のように本実施形態の構造によれば、下側部材１のボス部４と中間部材２の環状のボス部７とが上側部材３を挿通して同心的に突出してそれらを一体に熱かしめして結合してあるため、これら下側部材１と中間部材２および上側部材３とを相互に溶着関係の結合構造とすることができる。   As described above, according to the structure of the present embodiment, the boss portion 4 of the lower member 1 and the annular boss portion 7 of the intermediate member 2 are inserted through the upper member 3 and project concentrically to heat them integrally. Since the lower member 1, the intermediate member 2, and the upper member 3 are welded together, they can be joined together.

この結果、中間部材２が正規位置からずれてパーティングラインが不整合となって外観を損なったり、外部振動でずれ動いて不快な低級音を生じたりするのを回避することができる。   As a result, it can be avoided that the intermediate member 2 is displaced from the normal position and the parting line is inconsistent and the appearance is deteriorated, or that the intermediate member 2 is displaced due to external vibration to cause an unpleasant lower sound.

また、中間部材２の環状のボス部７の突出量を下側部材１のボス部４の突出量よりも低く設定して、該下側部材１のボス部４を熱かしめ治具１０の成形凹部１１に先当たりさせるようにしているので、熱溶着が中心側のボス部４から外周側の環状のボス部７に多段に行われてボス溶着をスムーズに行わせることができる。   Further, the protruding amount of the annular boss portion 7 of the intermediate member 2 is set to be lower than the protruding amount of the boss portion 4 of the lower member 1, and the boss portion 4 of the lower member 1 is molded by the heat caulking jig 10. Since the concave portion 11 is made to come first, the thermal welding is performed in multiple stages from the central boss portion 4 to the outer circumferential annular boss portion 7 so that the boss welding can be performed smoothly.

そして、上述のように下側部材１のボス部４と中間部材２の環状のボス部７とを一体に溶融して上側部材３のボス挿通孔６の周縁部上に熱かしめするので、この熱かしめを超音波溶着機を用いて行う場合に、ホーン１０による溶着加工中に超音波振動で中間部材２がずれ動いて結合不良を生じるのを回避することもできる。   Then, as described above, the boss portion 4 of the lower member 1 and the annular boss portion 7 of the intermediate member 2 are integrally melted and heat caulked onto the peripheral edge portion of the boss insertion hole 6 of the upper member 3. When heat caulking is performed using an ultrasonic welding machine, it is possible to prevent the intermediate member 2 from being displaced due to ultrasonic vibration during the welding process by the horn 10 and causing poor bonding.

図４は、下側部材１と上側部材３との間に複数の中間部材、例えば２つの中間部材２、２Ａを介装した本発明の第２実施形態を示している。   FIG. 4 shows a second embodiment of the present invention in which a plurality of intermediate members, for example, two intermediate members 2 and 2A are interposed between the lower member 1 and the upper member 3.

中間部材２Ａのボス挿通孔５Ａは、中間部材２の環状のボス部７を遊挿可能なように該ボス部７よりも大径に形成して良好な組付け性が得られるようにしてあり、その上側の孔縁部にはボス部４および環状のボス部７と共に上側部材３を挿通して上側に向けて同心的に突出する環状のボス部７Ａを突設してある。   The boss insertion hole 5A of the intermediate member 2A is formed to have a larger diameter than that of the boss portion 7 so that the annular boss portion 7 of the intermediate member 2 can be loosely inserted, so that good assemblability can be obtained. The upper edge of the hole is provided with an annular boss 7 </ b> A projecting concentrically upwardly through the upper member 3 together with the boss 4 and the annular boss 7.

環状のボス部７，７Ａはボス部４の外周側に２枚重ねとなるため、上側部材３のボス挿通孔６および熱かしめ部Ｗ（図３参照）が徒に大きくならないようにそれぞれ肉厚，外径が任意に設定される。   Since the two annular bosses 7 and 7A are stacked on the outer peripheral side of the boss part 4, the boss insertion hole 6 and the heat staking part W (see FIG. 3) of the upper member 3 are thick enough so that they do not become large. , The outer diameter is arbitrarily set.

そして、下側部材１のボス部４とこれら中間部材２，２Ａの環状のボス部７，７Ａとを、上側部材３を挿通して上方に同心的に突出させてそれらを一体に熱かしめして結合してある。   Then, the boss portion 4 of the lower member 1 and the annular boss portions 7 and 7A of these intermediate members 2 and 2A are inserted through the upper member 3 so as to protrude concentrically and heat them together. Are combined.

従って、本実施形態にあっても下側部材１と中間部材２，２Ａおよび上側部材３とを相互に溶着関係の結合構造とすることができ、前記第１実施形態と同様の効果を得ることができる。   Therefore, even in the present embodiment, the lower member 1, the intermediate members 2, 2A, and the upper member 3 can be joined to each other in a welded relationship, and the same effect as in the first embodiment can be obtained. Can do.

前述の各実施形態の結合構造は、例えば自動車のドアトリムやリアサイドトリム等の車両用内装材における複数の合成樹脂部品の重ね合わせ結合部分に適用して有効であるが、これに限らず各種の合成樹脂部品の結合構造に適用することができる。   The coupling structure of each of the above-described embodiments is effective when applied to an overlapping coupling portion of a plurality of synthetic resin parts in a vehicle interior material such as an automobile door trim and rear side trim, but is not limited thereto. The present invention can be applied to a resin component bonding structure.

また、上側部材３は熱かしめ部Ｗにより抜け止め固定されるので、熱可塑性樹脂材に限定されることはなく、他の合成樹脂製あるいは金属製等の部品の場合にも適用することが可能である。   Further, since the upper member 3 is fixed by the heat caulking portion W, the upper member 3 is not limited to the thermoplastic resin material, and can be applied to other synthetic resin or metal parts. It is.

更に、前記実施形態では熱かしめを超音波溶着機のホーンで行う場合を例示したが、この他、熱源を備えた熱かしめ治具を用いることも可能である。   Furthermore, although the case where heat caulking is performed with a horn of an ultrasonic welder has been exemplified in the above embodiment, a heat caulking jig provided with a heat source can also be used.

１…下側部材
２、２Ａ…中間部材
３…上側部材
４…ボス部
５、５Ａ…中間部材のボス挿通孔
６…上側部材のボス挿通孔
７、７Ａ…環状のボス部
１０…ホーン（熱かしめ治具）
１１…成形凹部
１２…凹部中心の突起
Ｗ…熱かしめ部
DESCRIPTION OF SYMBOLS 1 ... Lower member 2, 2A ... Intermediate member 3 ... Upper member 4 ... Boss part 5, 5A ... Boss insertion hole 6 of intermediate member ... Boss insertion hole 7, 7A of upper member ... Ring-shaped boss part 10 ... Horn (heat Caulking jig)
11 ... Molding recess 12 ... Projection W in the center of the recess ... Heat caulking part

Claims (3)

下側部材に突設したボス部を、該下側部材に重合配置した中間部材と上側部材とに挿通し、該ボス部の突出端部を熱かしめして結合する構造であって、
前記中間部材に、前記下側部材のボス部と共に前記上側部材を挿通して同心的に突出する環状のボス部を設け、
前記中間部材の環状のボス部を前記下側部材のボス部と一体に熱かしめして結合したことを特徴とする合成樹脂部品の結合構造。 The structure is such that the boss portion protruding from the lower member is inserted into the intermediate member and the upper member that are superposed on the lower member, and the protruding end portion of the boss portion is joined by heat caulking,
The intermediate member is provided with an annular boss portion that protrudes concentrically through the upper member together with the boss portion of the lower member,
A synthetic resin component joining structure, wherein an annular boss portion of the intermediate member is joined by heat caulking integrally with a boss portion of the lower member. 前記中間部材の環状のボス部の突出量を前記下側部材のボス部の突出量よりも低く設定し、該下側部材のボス部が熱かしめ治具の成形凹部に先当たりするようにしたことを特徴とする請求項１に記載の合成樹脂部品の結合構造。   The projecting amount of the annular boss portion of the intermediate member is set lower than the projecting amount of the boss portion of the lower member so that the boss portion of the lower member comes into contact with the molding concave portion of the heat caulking jig. The synthetic resin component joining structure according to claim 1, wherein: 前記熱かしめ治具が、超音波溶着機のホーンであることを特徴とする請求項２に記載の合成樹脂製品の結合構造。
The synthetic resin product bonding structure according to claim 2, wherein the heat caulking jig is a horn of an ultrasonic welder.
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JPH0463227U (en) * 1990-10-05 1992-05-29
JPH04113122U (en) * 1991-03-15 1992-10-02 小島プレス工業株式会社 Joint structure of articles
JPH061813U (en) * 1992-06-19 1994-01-14 日野自動車工業株式会社 Mounting structure of mounting member to mounted member
JPH11235956A (en) * 1998-02-20 1999-08-31 World Auto Plate Kk Manufacture for character lighting license plate

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Publication number Priority date Publication date Assignee Title
JPS6051027U (en) * 1983-09-19 1985-04-10 矢崎総業株式会社 Joint structure of multiple members
JPS63139920U (en) * 1987-03-05 1988-09-14
JPH0463227U (en) * 1990-10-05 1992-05-29
JPH04113122U (en) * 1991-03-15 1992-10-02 小島プレス工業株式会社 Joint structure of articles
JPH061813U (en) * 1992-06-19 1994-01-14 日野自動車工業株式会社 Mounting structure of mounting member to mounted member
JPH11235956A (en) * 1998-02-20 1999-08-31 World Auto Plate Kk Manufacture for character lighting license plate

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017087817A (en) * 2015-11-04 2017-05-25 テイ・エス テック株式会社 Vehicle interior material

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