JP2008162125A - Heat caulking connecting structure and heat caulking connecting method - Google Patents

Heat caulking connecting structure and heat caulking connecting method Download PDF

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Publication number
JP2008162125A
JP2008162125A JP2006354151A JP2006354151A JP2008162125A JP 2008162125 A JP2008162125 A JP 2008162125A JP 2006354151 A JP2006354151 A JP 2006354151A JP 2006354151 A JP2006354151 A JP 2006354151A JP 2008162125 A JP2008162125 A JP 2008162125A
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welding
welding boss
boss
jig
heat caulking
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Japanese (ja)
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Tomihiro Wakayama
富裕 若山
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Nidec Copal Corp
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Nidec Copal Corp
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Priority to JP2006354151A priority Critical patent/JP2008162125A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
    • B29C65/56—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
    • 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
    • B29C66/01—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
    • B29C66/50—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C66/00—General aspects of processes or apparatus for joining preformed parts
    • B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
    • B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
    • B29C66/53—Joining single elements to tubular articles, hollow articles or bars
    • B29C66/532—Joining single elements to the wall of tubular articles, hollow articles or bars
    • B29C66/5326—Joining single elements to the wall of tubular articles, hollow articles or bars said single elements being substantially flat
    • 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
    • B29C66/80—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
    • B29C66/81415—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 bevelled
    • B29C66/81417—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 bevelled being V-shaped
    • 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
    • B29L2031/34—Electrical apparatus, e.g. sparking plugs or parts thereof
    • B29L2031/3431—Telephones, Earphones
    • B29L2031/3437—Cellular phones

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

Abstract

<P>PROBLEM TO BE SOLVED: To stabilize heat welding by surely performing crushing by making no space remain inside. <P>SOLUTION: A recess 2b is formed on the center side of a tip face 2a of a welding boss 2, and a projection 5b with an approximately the same shape as the recess 2b is formed on the center side of a butting face 5a of a welding jig 5 corresponding to this, and the recess 2b of the welding boss 2 and the projection 5b of the welding jig 5 are fitted and melted by heating. Thereby, as spaces C1 and C2 from the tip position of the projection 5b of the welding jig 5 fitted to the recess 2b of the welding boss 2 to a hole passing-through part 2d of the welding boss 2 opposing the peripheral edge 4a on the jig side of a hole 4 become shorter, heat becomes easily transmitted to the hole passing-through part 2d of the welding boss 2 and this hole passing-through part 2d is surely melted by heating. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、例えばカメラや携帯電話などの小型機器に有効に用いられる熱可塑性樹脂製部材の熱カシメ連結構造、及び、それを製造する熱カシメ連結方法に関する。
詳しくは、一方の部材に設けられた溶着ボスを、他方の部材に設けられた孔に挿通し、この溶着ボスの先端に、溶着治具による加熱溶融で孔径よりも大径なカシメ部を形成して、一方の部材と他方の部材とを連結した熱カシメ連結構造、及び、一方の部材に設けられた溶着ボスを、他方の部材に設けられた孔に挿通し、この溶着ボスの先端面に溶着治具の当接面を圧接して、該孔から突き出た溶着ボスの先端部分を加熱溶融することにより、孔径よりも大径なカシメ部を形成して、一方の部材と他方の部材とを連結する熱カシメ連結方法に関する。 TECHNICAL FIELD The present invention relates to a heat caulking connection structure for a thermoplastic resin member that is effectively used for a small device such as a camera or a mobile phone, and a heat caulking connection method for manufacturing the same.
Specifically, a welding boss provided in one member is inserted into a hole provided in the other member, and a crimped portion having a diameter larger than the hole diameter is formed at the tip of the welding boss by heating and melting with a welding jig. Then, a heat caulking connection structure in which one member and the other member are connected, and a welding boss provided in one member is inserted into a hole provided in the other member, and a front end surface of the welding boss The contact surface of the welding jig is pressed against the tip, and the tip of the welding boss protruding from the hole is heated and melted to form a crimped portion having a diameter larger than the hole diameter. The present invention relates to a heat caulking connecting method.

従来、この種の熱カシメ連結構造及び熱カシメ連結方法として、溶着治具（発熱体）の当接面を凹曲面に形成し、この凹曲状の当接面を溶着ボスの先端面に押し当て加熱溶融して、溶着ボスの孔から突き出た部分が所定形状のカシメ部に拡径変形した後、冷却用エアーパイプから冷却エアーを吹きかけて当接面を冷却することにより、溶着ボスの溶融したカシメ部を固化し、その後、溶着治具を引き離して、熱溶着を完了するものがある（例えば、特許文献１参照）。   Conventionally, as this type of thermal caulking connection structure and thermal caulking connection method, the contact surface of the welding jig (heating element) is formed into a concave curved surface, and this concave curved contact surface is pushed against the tip surface of the welding boss. After melting by contact and melting, the part protruding from the hole of the welding boss expands and deforms to a crimped part with a predetermined shape, and then blows cooling air from the cooling air pipe to cool the contact surface, thereby melting the welding boss There is one that solidifies the crimped portion and then separates the welding jig to complete the thermal welding (see, for example, Patent Document 1).

特公平４−１９０１６号公報（第２−３頁、第１図）Japanese Examined Patent Publication No. 4-19016 (page 2-3, Fig. 1)

しかし乍ら、このような従来の熱カシメ連結構造及び熱カシメ連結方法では、溶着治具の当接面による押圧で溶着ボスの先端面が押し潰されその溶融した樹脂を溶着治具の当接面沿いに流動して拡径変形させるため、溶着治具の熱が溶着ボスの表面側しか伝わらず、溶着ボスの中心部分が十分に加熱溶融されていない時点で、溶融した樹脂によりカシメ部の表面部分のみが拡径形成されてしまい、該カシメ部の内部に未溶融の空間が残ったまま熱溶着工程を完了する可能性があった。
即ち、図７（ａ）（ｂ）に示す如く、溶着ボス２′の先端面２ａ′から溶融した樹脂が溶着治具５′の当接面５ａ′に沿って外側へ流動することで、カシメ部２ｅ′の表面側は拡径形成されるものの、孔４′の治具側周縁４ａ′と同一平面上に対向する溶着ボス２′の孔挿通部２ｄ′までは溶着治具５′からの熱が伝わり難く、この孔挿通部２ｄ′が溶融する前に熱溶着工程が完了してしまい、孔４′の周縁に沿って環状の空間Ｓが残ってしまう。
それにより、カシメ部２ｅ′の周縁部分は薄くて十分な強度が得られないため、押え不足が発生して固定不十分な状態になるという問題があった。 However, in such a conventional heat caulking connection structure and heat caulking connection method, the tip surface of the welding boss is crushed by the pressure by the contact surface of the welding jig, and the molten resin is brought into contact with the welding jig. Since the heat of the welding jig is transmitted only to the surface side of the welding boss, and the center portion of the welding boss is not sufficiently heated and melted, the crimped portion of the crimping portion is melted by the molten resin. Only the surface portion is formed with an enlarged diameter, and there is a possibility that the heat welding process is completed while an unmelted space remains in the caulking portion.
That is, as shown in FIGS. 7 (a) and 7 (b), the resin melted from the tip surface 2a 'of the welding boss 2' flows outward along the contact surface 5a 'of the welding jig 5'. Although the surface side of the portion 2e 'is formed to have a larger diameter, the portion from the welding jig 5' to the hole insertion portion 2d 'of the welding boss 2' facing the same plane as the jig side peripheral edge 4a 'of the hole 4'. Heat is hardly transmitted, and the heat welding process is completed before the hole insertion portion 2d ′ is melted, and an annular space S is left along the periphery of the hole 4 ′.
Accordingly, the peripheral portion of the crimped portion 2e ′ is thin and sufficient strength cannot be obtained, so that there is a problem that insufficient pressing occurs and the fixing is insufficient.

本発明は、このような問題点を解決するためになされたものであり、その目的とするところは、内部に空間が残ることなく確実に押し潰して熱溶着を安定化させた熱カシメ連結構造及び熱カシメ連結方法を提供することにある。   The present invention has been made to solve such problems, and the object of the present invention is to provide a heat caulking connection structure in which heat welding is stabilized by reliably crushing without leaving a space inside. And providing a thermal caulking connection method.

前述した目的を達成するために、本発明のうち請求項１に記載の発明は、一方の部材に設けられた溶着ボスを、他方の部材に設けられた孔に挿通し、前記溶着ボスの先端に、溶着治具による加熱溶融で前記孔径よりも大径なカシメ部を形成して、前記一方の部材と前記他方の部材とを連結した熱カシメ連結構造において、前記溶着ボスの先端面の中心側に、前記溶着治具の当接面の中心側に形成された凸部と略同一形状で嵌め合う凹部を形成したことを特徴とする。
請求項２に記載の発明は、請求項１に記載の発明の構成に、前記溶着治具の当接面が、その外周側に設けた平面部と、該平面部から中心側に向けた傾斜面により形成された凸部とを有し、該当接面の平面部と凸部との加圧嵌合で、前記溶着ボスの先端面の凹部の外周部を外側に押し出すように圧接させた構成を加えたことを特徴とする。
そして、請求項３に記載の発明は、一方の部材に設けられた溶着ボスを、他方の部材に設けられた孔に挿通し、前記溶着ボスの先端面に溶着治具の当接面を圧接して、該孔から突き出た前記溶着ボスの先端部分を加熱溶融することにより、前記孔径よりも大径なカシメ部を形成して、前記一方の部材と前記他方の部材とを連結する熱カシメ連結方法において、前記溶着ボスの先端面の中心側に形成された凹部と、該凹部と対応して前記溶着治具の当接面の中心側に形成された該凹部と略同一形状の凸部とを嵌合させて加熱溶融することを特徴とする方法である。
請求項４に記載の発明は、請求項３に記載の発明の構成に、前記前記溶着治具の当接面の外周側に設けた前記平面部と、該平面部から中心側に向かう傾斜面にて形成された前記凸部との加圧嵌合により、前記溶着ボスの先端面の凹部の外周部を外側に押し出すようにした構成を加えたことを特徴とする方法である。 In order to achieve the above-described object, the invention according to claim 1 of the present invention is such that a welding boss provided in one member is inserted into a hole provided in the other member, and the tip of the welding boss is inserted. In the thermal caulking connection structure in which a caulking portion having a diameter larger than the hole diameter is formed by heating and melting with a welding jig, and the one member and the other member are connected, the center of the front end surface of the welding boss A concave portion that fits in substantially the same shape as the convex portion formed on the center side of the contact surface of the welding jig is formed on the side.
The invention according to claim 2 is the configuration of the invention according to claim 1, in which the contact surface of the welding jig has a flat portion provided on the outer peripheral side thereof, and an inclination from the flat portion toward the center side. A convex portion formed by a surface, and press-fitted between the flat portion of the corresponding contact surface and the convex portion, and press-contacted so as to push the outer peripheral portion of the concave portion of the distal end surface of the welding boss outward It is characterized by adding.
According to a third aspect of the present invention, the welding boss provided on one member is inserted into the hole provided on the other member, and the contact surface of the welding jig is pressed against the tip surface of the welding boss. Then, by heating and melting the tip portion of the welding boss protruding from the hole, a caulking portion having a diameter larger than the hole diameter is formed, and the heat caulking connecting the one member and the other member is performed. In the connecting method, a concave portion formed on the center side of the tip surface of the welding boss, and a convex portion having substantially the same shape as the concave portion formed on the center side of the contact surface of the welding jig corresponding to the concave portion And are melted by heating.
According to a fourth aspect of the present invention, in the configuration of the third aspect of the invention, the planar portion provided on the outer peripheral side of the contact surface of the welding jig, and an inclined surface directed from the planar portion toward the center side The method is characterized by adding a configuration in which the outer peripheral portion of the concave portion of the front end surface of the welding boss is pushed outward by press-fitting with the convex portion formed in (1).

本発明のうち請求項１の発明は、溶着ボスの先端面の中心側に、溶着治具の当接面の中心側に形成された凸部と略同一形状で嵌め合う凹部を形成することにより、溶着ボスの凹部に嵌合した溶着治具の凸部の先端位置から孔の治具側周縁と対向する溶着ボスの孔挿通部までの間隔が短くなるため、溶着ボスの孔挿通部へ熱が伝わり易くなって、この孔挿通部まで確実に加熱溶融される。
従って、内部に空間が残ることなく確実に押し潰して熱溶着を安定化させた熱カシメ連結構造を提供することができる。
その結果、溶着治具の当接面による押圧で溶着ボスの先端面が押し潰されその溶融した樹脂を溶着治具の当接面沿いに流動して拡径変形させる従来のものに比べ、溶着する溶着ボスの先端形状を溶着治具の当接面形状に合わせて変えるだけなので、簡単な構造でありながら固定不十分な状態とならず、歩留まりが良くなって生産性を向上できる。
特に、例えばカメラや携帯電話などの小型機器の分野では、コンパクト化に伴ってその連結構造の容積も小さくなっており、従来のネジ止めに代えて使用すれば、ネジを使用しないため部品点数が減ると共に、自動化が容易になって更なるコストダウンが図れる。 According to the invention of claim 1 of the present invention, a recess is formed on the center side of the front end surface of the welding boss and is fitted with a substantially same shape as the projection formed on the center side of the contact surface of the welding jig. Since the distance from the tip position of the convex part of the welding jig fitted into the concave part of the welding boss to the hole insertion part of the welding boss facing the jig side periphery of the hole is shortened, heat is applied to the hole insertion part of the welding boss. Is easily transmitted to the hole insertion portion and reliably melted by heating.
Therefore, it is possible to provide a heat caulking connection structure in which heat welding is stabilized by reliably crushing without leaving a space inside.
As a result, the tip of the welding boss is crushed by the pressure of the contact surface of the welding jig, and the molten resin flows along the contact surface of the welding jig and expands in diameter. Since the tip shape of the welding boss is simply changed in accordance with the shape of the contact surface of the welding jig, the structure is simple, but the fixing is not insufficient and the yield is improved and the productivity can be improved.
In particular, in the field of small devices such as cameras and mobile phones, the volume of the connection structure has become smaller with the downsizing, and if used instead of conventional screwing, the number of parts is reduced because no screws are used. In addition to reduction, automation becomes easier and further cost reduction can be achieved.

請求項２の発明は、請求項１の発明の効果に加えて、溶着治具の当接面が、その外周側に設けた平面部と、該平面部から中心側に向けた傾斜面により形成された凸部とを有し、これら当接面の平面部と凸部との加圧嵌合で、溶着ボスの先端面の凹部の外周部を外側に押し出すように圧接させることにより、該溶着ボスの外周部が嵌合孔の治具側周縁と隙間なく密着する。
従って、溶着ボスをスムーズに押し潰して確実に熱溶着することができる。 In the invention of claim 2, in addition to the effect of the invention of claim 1, the contact surface of the welding jig is formed by a flat portion provided on the outer peripheral side and an inclined surface directed from the flat portion toward the center side. By pressing the outer peripheral portion of the concave portion of the front end surface of the welding boss to the outside by press-fitting between the flat portion and the convex portion of the contact surface. The outer peripheral part of the boss is closely attached to the jig side periphery of the fitting hole without any gap.
Therefore, the welding boss can be crushed smoothly and reliably heat-welded.

請求項３の発明は、溶着ボスの先端面の中心側に形成された凹部と、これと対応して溶着治具の当接面の中心側に形成された該凹部と略同一形状の凸部とを嵌合させて加熱溶融することにより、溶着ボスの凹部に嵌合した溶着治具の凸部の先端位置から孔の治具側周縁と対向する溶着ボスの孔挿通部までの間隔が短くなるため、溶着ボスの孔挿通部へ熱が伝わり易くなって、この孔挿通部まで確実に加熱溶融される。
従って、内部に空間が残ることなく確実に押し潰して熱溶着を安定化させる熱カシメ連結方法を提供することができる。
その結果、溶着治具の当接面による押圧で溶着ボスの先端面が押し潰されその溶融した樹脂を溶着治具の当接面沿いに流動して拡径変形させる従来のものに比べ、溶着する溶着ボスの先端形状と溶着治具の当接面形状と変えるだけなので、簡単な構造でありながら従来の溶着機を使用することが可能であり、新たな設備の必要がないからコストの低減化が図れる。
特に、例えばカメラや携帯電話などの小型機器の分野では、コンパクト化に伴ってその連結構造の容積も小さくなっており、従来のネジ止めに代えて使用すれば、ネジを使用しないため部品点数が減ると共に、自動化が容易になって更なるコストダウンが図れる。 The invention according to claim 3 is a concave portion formed on the center side of the tip surface of the welding boss, and a convex portion having substantially the same shape as the concave portion formed on the center side of the contact surface of the welding jig corresponding to the concave portion. , And the heat melting is performed to shorten the distance from the tip position of the convex portion of the welding jig fitted into the concave portion of the welding boss to the hole insertion portion of the welding boss facing the jig side periphery of the hole. Therefore, heat is easily transmitted to the hole insertion portion of the welding boss, and the hole insertion portion is reliably heated and melted.
Therefore, it is possible to provide a heat caulking connecting method that can reliably crush without stabilizing the interior and stabilize the heat welding.
As a result, the tip of the welding boss is crushed by the pressure of the contact surface of the welding jig, and the molten resin flows along the contact surface of the welding jig and expands in diameter. Since the tip shape of the welding boss and the contact surface shape of the welding jig are simply changed, it is possible to use a conventional welding machine with a simple structure, and there is no need for new equipment, reducing costs. Can be achieved.
In particular, in the field of small devices such as cameras and mobile phones, the volume of the connection structure has become smaller with the downsizing, and if used instead of conventional screwing, the number of parts is reduced because no screws are used. In addition to reduction, automation becomes easier and further cost reduction can be achieved.

請求項４の発明は、請求項３の発明の効果に加えて、溶着治具の当接面の外周側に設けた平面部と、該平面部から中心側に向かう傾斜面にて形成された凸部との加圧嵌合により、溶着ボスの先端面の凹部の外周部が外側に押し出され、それによって該溶着ボスの外周部が嵌合孔の治具側周縁と隙間なく密着する。
従って、溶着ボスをスムーズに押し潰して確実に熱溶着することができる。 In addition to the effect of the invention of claim 3, the invention of claim 4 is formed by a flat portion provided on the outer peripheral side of the contact surface of the welding jig and an inclined surface directed from the flat portion toward the center. By press-fitting with the convex portion, the outer peripheral portion of the concave portion on the front end surface of the welding boss is pushed outward, and thereby the outer peripheral portion of the welding boss closely contacts the peripheral edge of the fitting hole with no gap.
Therefore, the welding boss can be smoothly crushed and reliably heat-welded.

以下、本発明の四つの実施例を図面に基づいて説明する。
図１〜図３は本発明の第１実施例を示したものであって、図１は本発明の熱カシメ連結構造ＡでレンズシャッタＢの部材連結に使用した場合の平面図である。図２は熱カシメ連結構造Ａの連結工程を部分拡大した説明断面図であり、（ａ）が熱カシメ開始時を示し、（ｂ）が熱カシメ途中の状態を示し、（ｃ）が熱カシメ完了時を示している。図３は溶着治具を示しており、（ａ）が斜視図であり、（ｂ）が溶着治具の当接面側から視た正面図で、（ｃ）が同側面図である。
更に、図４〜図６は本発明の第２実施例〜第４実施例を示したものであって、（ａ）が溶着治具の斜視図であり、（ｂ）が同正面図であり、（ｃ）が同側面図である。
また、図７は従来の熱カシメ連結構造の一例を示す説明断面図であり、（ａ）が熱カシメ開始時を示し、（ｂ）が熱カシメ完了時を示している。 Hereinafter, four embodiments of the present invention will be described with reference to the drawings.
1 to 3 show a first embodiment of the present invention, and FIG. 1 is a plan view of the heat caulking connection structure A of the present invention used for connecting a lens shutter B member. 2A and 2B are explanatory cross-sectional views in which the connecting process of the heat caulking connection structure A is partially enlarged. FIG. 2A shows the time when heat caulking starts, FIG. 2B shows the state during heat caulking, and FIG. 2C shows heat caulking. Indicates when completed. 3A and 3B show a welding jig, where FIG. 3A is a perspective view, FIG. 3B is a front view seen from the contact surface side of the welding jig, and FIG. 3C is a side view thereof.
4 to 6 show the second to fourth embodiments of the present invention, in which (a) is a perspective view of a welding jig and (b) is a front view of the same. (C) is the same side view.
FIG. 7 is an explanatory cross-sectional view showing an example of a conventional heat caulking connection structure, where (a) shows the start of heat caulking and (b) shows the time when heat caulking is completed.

最初に、本発明の第１実施例の構成を説明する。
この第１実施例では、本発明の熱カシメ連結構造Ａにおいて、連結する一方の部材１が、レンズシャッタＢのシャッタ地板であり、このシャッタ地板１の表面側に熱可塑性樹脂製の溶着ボス２を一体成形などで複数個突設し、また連結する他方の部材３が、該シャッタ地板１と平行に配置される押え板であり、この押え板３には、上記シャッタ地板１の溶着ボス２と対向する位置に嵌合孔４が夫々複数個開穿されている。 First, the configuration of the first embodiment of the present invention will be described.
In the first embodiment, in the heat caulking connection structure A of the present invention, one member 1 to be connected is a shutter base plate of the lens shutter B, and a welding boss 2 made of a thermoplastic resin is provided on the surface side of the shutter base plate 1. The other member 3 that protrudes and is connected by integral molding or the like is a presser plate that is arranged in parallel with the shutter base plate 1, and the presser plate 3 has a welding boss 2 of the shutter base plate 1. A plurality of fitting holes 4 are opened at positions facing each other.

上記複数の溶着ボス２は、図２（ａ）に示す如く、大径部２Ｌと小径部２Ｓを有している。
これら大径部２Ｌは、図１に示す如く、シャッタ地板１と押え板３の間にシャッタ羽根Ｂ１，Ｂ２が配置される羽根室Ｂ３を形成するためのものである。
更に、各溶着ボス２の小径部２Ｓは、上記押え板３の嵌合孔４に挿通されて、夫々の先端部を嵌合孔４から突出させている。 The plurality of welding bosses 2 have a large diameter portion 2L and a small diameter portion 2S as shown in FIG.
These large diameter portions 2L are for forming a blade chamber B3 in which shutter blades B1 and B2 are disposed between the shutter base plate 1 and the presser plate 3, as shown in FIG.
Further, the small-diameter portion 2S of each welding boss 2 is inserted into the fitting hole 4 of the holding plate 3 so that the respective leading end portions protrude from the fitting hole 4.

また、押え板３側から見た図１において、符号Ｂ４，Ｂ５はシャッタ地板１に立設された各シャッタ羽根Ｂ１，Ｂ２の回転軸である。符号Ｂ６は図示しない駆動源の出力ピンで各シャッタ羽根Ｂ１，Ｂ２に形成した孔に連結されている。符号Ｂ７はシャッタ地板１の開口部で露光開口を規制している。符号Ｂ８は押え板３に形成された開口部で、シャッタ地板１の開口部Ｂ７よりも大径である。
更に、上記駆動源の出力ピンＢ６は、その往復回動により各シャッタ羽根Ｂ１，Ｂ２を作動させてシャッタ地板１の開口部Ｂ７が開閉される。
図１において押え板３は、一部破断して示してあるので、シャッタ羽根Ｂ１の一部が実線で示されている。 Further, in FIG. 1 as viewed from the presser plate 3 side, reference numerals B4 and B5 denote rotation shafts of the shutter blades B1 and B2 provided upright on the shutter base plate 1, respectively. Reference numeral B6 is an output pin of a drive source (not shown) and is connected to a hole formed in each shutter blade B1, B2. Reference numeral B7 regulates the exposure opening at the opening of the shutter base plate 1. Reference numeral B <b> 8 is an opening formed in the presser plate 3 and has a larger diameter than the opening B <b> 7 of the shutter base plate 1.
Further, the output pin B6 of the drive source operates the shutter blades B1 and B2 by the reciprocating rotation thereof to open and close the opening B7 of the shutter base plate 1.
In FIG. 1, since the presser plate 3 is partially broken, a part of the shutter blade B1 is shown by a solid line.

各溶着ボス２の先端面２ａは、図２（ａ）に示す如く、その中心側に形成された凹部２ｂと、その周囲に形成された平坦な外周部２ｃとを備えている。
これと対応する溶着治具５の当接面５ａは、図２（ａ）及び図３（ａ）〜（ｃ）に示す如く、その中心側に形成された上記溶着ボス２の凹部２ｂと嵌め合う形状の凸部５ｂと、この凸部５ｂの外周側に設けた平面部５ｃとを備えており、該凸部５ｂは、平面部５ｃから中心側に向けた傾斜面５ｄにより形成されている。 As shown in FIG. 2A, the front end surface 2a of each welding boss 2 includes a concave portion 2b formed on the center side thereof and a flat outer peripheral portion 2c formed on the periphery thereof.
The corresponding contact surface 5a of the welding jig 5 is fitted with the concave portion 2b of the welding boss 2 formed at the center thereof as shown in FIGS. 2 (a) and 3 (a) to 3 (c). The convex part 5b of the shape which fits, and the plane part 5c provided in the outer peripheral side of this convex part 5b are provided, and this convex part 5b is formed of the inclined surface 5d toward the center side from the plane part 5c. .

そして、図２（ｂ）に示す如く、これら溶着ボス２の凹部２ｂと溶着治具５の凸部５ｂとを嵌合させ、この状態で溶着治具５を溶着ボス２へ向け加圧するか又は溶着ボス２を溶着治具５へ向け加圧しながら、該溶着治具５の当接面５ａの凸部５ｂの傾斜面５ｄ及び平面部５ｃから溶着ボス２の先端面２ａの凹部２ｂ及び外周部２ｃへ熱を伝えて加熱溶融することにより、溶着ボス２の先端面２ａの外周部２ｃを外側に押し出すようにしている。   Then, as shown in FIG. 2 (b), the concave portion 2b of the welding boss 2 and the convex portion 5b of the welding jig 5 are fitted, and in this state, the welding jig 5 is pressurized toward the welding boss 2 or While pressurizing the welding boss 2 toward the welding jig 5, the inclined surface 5d of the convex part 5b of the contact surface 5a and the flat part 5c of the welding jig 5 to the concave part 2b and the outer peripheral part of the tip surface 2a of the welding boss 2 are provided. By transmitting heat to 2c and heating and melting, the outer peripheral portion 2c of the tip end surface 2a of the welding boss 2 is pushed outward.

図示例では、溶着ボス２の断面形状と嵌合孔４の開口形状が夫々円形であり、これらを挿通させた状態で両者間に環状の隙間が形成され、これら溶着ボス２の先端面２ａの中心に大きな円錐形状の凹部２ｂを一つだけ形成すると共に、溶着治具５の当接面５ａの中心に大きな円錐形状の凸部５ｂを一つだけ形成している。
その他の例として、溶着ボス２の断面形状と嵌合孔４の開口形状を矩形や多角形にしたり、これらの挿通状態で両者間の隙間無しで嵌合させることも可能である。 In the illustrated example, the cross-sectional shape of the welding boss 2 and the opening shape of the fitting hole 4 are each circular, and an annular gap is formed between the two in a state where they are inserted. Only one large conical concave portion 2b is formed at the center, and only one large conical convex portion 5b is formed at the center of the contact surface 5a of the welding jig 5.
As another example, the cross-sectional shape of the welding boss 2 and the opening shape of the fitting hole 4 can be rectangular or polygonal, or can be fitted with no gap between the two in the inserted state.

次に、本発明の熱カシメ連結方法について工程順に説明する。
図２（ａ）に示す溶着ボス２の先端面２ａに対して溶着治具５の当接面５ａが離れた初期状態から、これら溶着ボス２の先端面２ａか又は溶着治具５の当接面５ａのどちらか一方を他方へ向け移動させて両者を接近させる。 Next, the thermal caulking connection method of the present invention will be described in the order of steps.
From the initial state in which the contact surface 5a of the welding jig 5 is separated from the tip surface 2a of the welding boss 2 shown in FIG. 2A, either the tip surface 2a of the welding boss 2 or the welding jig 5 is in contact. Either one of the surfaces 5a is moved toward the other to bring them closer together.

その後、図２（ｂ）に示す如く、この溶着ボス２の凹部２ｂと溶着治具５の凸部５ｂを嵌入して嵌め合わせると共に、該溶着ボス２の先端面２ａの外周部２ｃと溶着治具５の当接面５ａの平面部５ｃを当接させ、この状態で溶着治具５を溶着ボス２へ向け加圧するか又は溶着ボス２を溶着治具５へ向け加圧しながら、該溶着治具５の当接面５ａの凸部５ｂの傾斜面５ｄ及び平面部５ｃから溶着ボス２の先端面２ａの凹部２ｂ及び外周部２ｃへ熱を伝える。   Thereafter, as shown in FIG. 2 (b), the concave portion 2b of the welding boss 2 and the convex portion 5b of the welding jig 5 are fitted and fitted together, and the outer peripheral portion 2c of the front end surface 2a of the welding boss 2 is welded. The flat surface portion 5c of the contact surface 5a of the tool 5 is brought into contact, and in this state, the welding jig 5 is pressed toward the welding boss 2 or the welding boss 2 is pressed toward the welding jig 5 while the welding treatment is performed. Heat is transferred from the inclined surface 5d of the convex portion 5b and the flat surface portion 5c of the contact surface 5a of the tool 5 to the concave portion 2b and the outer peripheral portion 2c of the tip surface 2a of the welding boss 2.

それにより、溶着ボス２の先端面２ａの凹部２ｂ及び外周部２ｃが徐々に加熱溶融されると共に、嵌合孔４の治具側周縁４ａと同一平面上に対向する溶着ボス２の孔挿通部２ｄまでが加熱溶融され、溶着治具５の凸部５ｂの傾斜面５ｄ及び平面部５ｃにより、溶着ボス２の先端面２ａの外周部２ｃが外側に押し出されると共に、溶着ボス２の先端面２ａが溶着治具５の当接面５ａで潰されて、嵌合孔４の治具側周縁４ａと隙間なく密着する。
これに伴い、図２（ｃ）に示す如く、上記嵌合孔４の直径よりも大径なカシメ部２ｅを形成して、シャッタ地板１と押え板３が連結され、これらシャッタ地板１と押え板３との間に、シャッタ羽根Ｂ１，Ｂ２が配置される羽根室Ｂ３を区画形成している。 Thereby, the concave portion 2b and the outer peripheral portion 2c of the front end surface 2a of the welding boss 2 are gradually heated and melted, and the hole insertion portion of the welding boss 2 facing the jig side peripheral edge 4a of the fitting hole 4 on the same plane. Up to 2d is heated and melted, and the outer peripheral portion 2c of the distal end surface 2a of the welding boss 2 is pushed outward by the inclined surface 5d and the flat surface portion 5c of the projection 5b of the welding jig 5, and the distal end surface 2a of the welding boss 2 is also extruded. Is crushed by the contact surface 5a of the welding jig 5 and closely contacts the jig side peripheral edge 4a of the fitting hole 4 without a gap.
Accordingly, as shown in FIG. 2 (c), a caulking portion 2e having a diameter larger than the diameter of the fitting hole 4 is formed, and the shutter base plate 1 and the presser plate 3 are connected. A blade chamber B3 in which shutter blades B1 and B2 are arranged is defined between the plate 3 and the plate 3.

更に詳しく説明すれば、図２（ａ）に示す溶着治具５の凸部５ｂの先端中心位置が嵌合する溶着ボス２の凹部２ｂの中心位置から嵌合孔４の治具側周縁４ａと同一平面上に対向する溶着ボス２の孔挿通部２ｄまでの間隔Ｃ１と、図７（ａ）に示す従来の溶着ボス２′の平坦な先端面２ａ′の中心位置から嵌合孔４′の治具側周縁４ａ′と同一平面上に対向する溶着ボス２′の孔挿通部２ｄ′までの間隔Ｄ１とを比較すると、間隔Ｃ１の方が遙かに短いため、溶着ボス２の孔挿通部２ｄへ熱が伝わり易くなって、この孔挿通部２ｄが確実に加熱溶融される。   More specifically, the jig-side peripheral edge 4a of the fitting hole 4 from the center position of the recess 2b of the welding boss 2 to which the tip center position of the protrusion 5b of the welding jig 5 shown in FIG. The distance C1 to the hole insertion portion 2d of the welding boss 2 facing on the same plane and the center position of the flat front end surface 2a 'of the conventional welding boss 2' shown in FIG. Comparing the distance D1 to the hole insertion part 2d 'of the welding boss 2' facing the jig side periphery 4a 'on the same plane, the distance C1 is much shorter, so the hole insertion part of the welding boss 2 Heat is easily transmitted to 2d, and the hole insertion portion 2d is reliably heated and melted.

このような関係は、熱カシメ工程の途中においても変化せず、図２（ｂ）に示す溶着ボス２の凹部２ｂの中心位置から溶着ボス２の孔挿通部２ｄまでの間隔Ｃ２は、図７（ｂ）に示す従来の溶着ボス２′の平坦な先端面２ａ′の中心位置から溶着ボス２′の孔挿通部２ｄ′までの間隔Ｄ２に比べて短いため、溶着ボス２の孔挿通部２ｄへ熱が伝わり易くなって、この孔挿通部２ｄまで確実に加熱溶融される。   Such a relationship does not change during the heat caulking process, and the distance C2 from the center position of the recess 2b of the welding boss 2 to the hole insertion portion 2d of the welding boss 2 shown in FIG. The hole insertion portion 2d of the welding boss 2 is shorter than the distance D2 from the center position of the flat front end surface 2a 'of the conventional welding boss 2' shown in (b) to the hole insertion portion 2d 'of the welding boss 2'. Heat is easily transmitted to the hole insertion portion 2d and is surely heated and melted.

しかし、図７（ｂ）に示す従来の熱カシメ連結構造では、上述したように孔４′の治具側周縁４ａ′と同一平面上に対向する溶着ボス２′の孔挿通部２ｄ′までは溶着治具５′からの熱が伝わり難く、この孔挿通部２ｄ′が溶融する前に熱溶着工程が完了してしまい、孔４′の周縁に沿って環状の空間Ｓが残ってしまい、カシメ部２ｅ′の周縁部分は薄くて十分な強度が得られないため、押え不足が発生してしまう。   However, in the conventional heat caulking connection structure shown in FIG. 7 (b), as described above, up to the hole insertion portion 2d ′ of the welding boss 2 ′ facing the jig side peripheral edge 4a ′ of the hole 4 ′ on the same plane. Heat from the welding jig 5 ′ is difficult to be transmitted, and the heat welding process is completed before the hole insertion portion 2 d ′ is melted, and an annular space S remains along the periphery of the hole 4 ′. Since the peripheral portion of the portion 2e 'is thin and sufficient strength cannot be obtained, the presser will be insufficient.

そのため、本発明の熱カシメ連結構造Ａは、図２（ｃ）に示す如く、溶着治具５の当接面５ａから溶着ボス２の先端面２ａへ熱が伝わると同時に、溶着ボス２の凹部２ｂに嵌合した溶着治具５の凸部５ｂの先端中心からも熱が伝わるようにしたので、溶着ボス２の孔挿通部２ｄが十分に加熱溶融されて確実に押し潰して熱溶着でき、カシメ部２ｅの内部には未溶融の空間ができないから熱溶着を安定化できる。   Therefore, as shown in FIG. 2C, the heat caulking connection structure A of the present invention transmits heat from the contact surface 5a of the welding jig 5 to the tip surface 2a of the welding boss 2 and at the same time, the concave portion of the welding boss 2 Since heat is transmitted from the center of the tip of the convex portion 5b of the welding jig 5 fitted to 2b, the hole insertion portion 2d of the welding boss 2 is sufficiently heated and melted to be surely crushed and thermally welded, Since there is no unmelted space inside the crimped portion 2e, thermal welding can be stabilized.

更に、溶着ボス２の凹部２ｂと溶着治具５の凸部５ｂを互いに嵌め合う錐形状にした場合には、これら凹部２ｂ及び凸部５ｂの接近で両者がスムーズに嵌合して位置合わせされ、溶着治具５の凸部５ｂから溶着ボス２の凹部２ｂへ最適位置で熱が伝わるため、互い接近する溶着治具５と溶着ボス２を正確に位置案内して加熱できるという利点がある。   Further, when the concave portion 2b of the welding boss 2 and the convex portion 5b of the welding jig 5 are formed in a conical shape that fits each other, the concave portion 2b and the convex portion 5b approach each other and are smoothly fitted and aligned. Since heat is transferred from the convex portion 5b of the welding jig 5 to the concave portion 2b of the welding boss 2 at an optimum position, there is an advantage that the welding jig 5 and the welding boss 2 approaching each other can be accurately guided and heated.

次に、図４を用いて本発明の第２実施例の構成を説明する。
この第２実施例は、図４（ａ）〜（ｃ）に示す如く、前記溶着治具５の当接面５ａの中心側に錐形状の凸部５ｂを複数夫々等間隔毎に突出形成し、図示せぬがこれと対向する溶着ボス２の先端面２ａの中心側には、該凸部５ｂと略同一な円錐形状の凹部２ｂを複数形成した構成が、前記図１〜図３に示した第１実施例とは異なり、それ以外の構成は図１〜図３に示した第１実施例と同じものである。 Next, the configuration of the second embodiment of the present invention will be described with reference to FIG.
In the second embodiment, as shown in FIGS. 4A to 4C, a plurality of conical projections 5b are formed at regular intervals on the center side of the contact surface 5a of the welding jig 5. Although not shown, a configuration in which a plurality of conical concave portions 2b substantially the same as the convex portions 5b are formed on the center side of the front end surface 2a of the welding boss 2 facing this is shown in FIGS. Unlike the first embodiment, the other configurations are the same as those of the first embodiment shown in FIGS.

図示例では、溶着治具５の当接面５ａの中心から同径となる位置に円錐形状の凸部５ｂを夫々周方向へ等間隔毎に四つ突出させて、これらと略同一な円錐形状の凹部２ｂを溶着ボス２の先端面２ａに四つ形成している。
その他の例として、溶着治具５の凸部５ｂと溶着ボス２の凹部２ｂを、周方向へ五つ以上配置したり、これら多数の凸部５ｂ及び凹部２ｂの形状を角錐形状などに変更することも可能である。
従って、図４に示す第２実施例も、上述した第１実施例と同様な作用効果が得られ、更に加えて、多数の凸部５ｂの先端位置から前記嵌合孔４の治具側周縁４ａと同一平面上に対向する溶着ボス２の孔挿通部２ｄまでの間隔Ｃ１，Ｃ２がより短くなるため、該孔挿通部２ｄへ熱が更に伝わり易くなって、この孔挿通部２ｄの加熱溶融が促進され、比較的に大径な溶着ボス２を熱溶着する時に有効であるという利点がある。 In the illustrated example, four conical convex portions 5b are protruded at equal intervals in the circumferential direction at the same diameter from the center of the contact surface 5a of the welding jig 5, and substantially the same conical shape. Are formed on the front end surface 2a of the welding boss 2.
As other examples, five or more convex portions 5b of the welding jig 5 and concave portions 2b of the welding boss 2 are arranged in the circumferential direction, or the shapes of the multiple convex portions 5b and the concave portions 2b are changed to a pyramid shape or the like. It is also possible.
Therefore, the second embodiment shown in FIG. 4 also has the same effect as that of the first embodiment described above, and in addition, the jig side periphery of the fitting hole 4 from the tip positions of the multiple protrusions 5b. Since the intervals C1 and C2 to the hole insertion portion 2d of the welding boss 2 facing on the same plane as 4a become shorter, heat is more easily transmitted to the hole insertion portion 2d, and the hole insertion portion 2d is heated and melted. This is advantageous in that it is effective when heat welding the welding boss 2 having a relatively large diameter.

次に、図５を用いて本発明の第３実施例の構成を説明する。
この第３実施例は、図５（ａ）〜（ｃ）に示す如く、前記溶着治具５の当接面５ａの中心点から放射状に延びた板が錐形状に突出する凸部５ｂを形成し、図示せぬがこれと対向する溶着ボス２の先端面２ａの中心には、該凸部５ｂと略同一な放射状に延びる板が錐形状に凹む凹部２ｂを形成した構成が、前記図１〜図３に示した第１実施例とは異なり、それ以外の構成は図１〜図３に示した第１実施例と同じものである。 Next, the configuration of the third embodiment of the present invention will be described with reference to FIG.
In the third embodiment, as shown in FIGS. 5 (a) to 5 (c), a plate extending radially from the center point of the contact surface 5a of the welding jig 5 forms a convex portion 5b protruding in a cone shape. Although not shown in the drawing, the center of the tip surface 2a of the welding boss 2 facing this is formed with a concave portion 2b in which a radially extending plate substantially the same as the convex portion 5b is recessed in a conical shape. Unlike the first embodiment shown in FIG. 3, the other configuration is the same as that of the first embodiment shown in FIGS.

図示例では、溶着治具５の当接面５ａの中心点で十字状に交差した板が側面から視て錐形状に突出する凸部５ｂを形成して、これと略同一な十字状の凹部２ｂを溶着ボス２の先端面２ａに形成している。
その他の例として、溶着治具５の凸部５ｂと溶着ボス２の凹部２ｂを、正面から視て３枚以上の板が交差した板が側面から正面から視て錐形状に形成することも可能である。
従って、図５に示す第３実施例も、上述した第１実施例と同様な作用効果が得られる。 In the illustrated example, a plate intersecting in a cross shape at the center point of the contact surface 5a of the welding jig 5 forms a convex portion 5b protruding in a cone shape when viewed from the side surface, and is substantially the same cross-shaped concave portion. 2 b is formed on the front end surface 2 a of the welding boss 2.
As another example, the convex part 5b of the welding jig 5 and the concave part 2b of the welding boss 2 can be formed in a conical shape when a plate in which three or more plates intersect when viewed from the front is viewed from the side from the front. It is.
Therefore, the third embodiment shown in FIG. 5 can obtain the same effects as those of the first embodiment described above.

次に、図６を用いて本発明の第４実施例の構成を説明する。
この第４実施例は、図６（ａ）〜（ｃ）に示す如く、前記溶着治具５の当接面５ａの中心に角錐形状の凸部５ｂを突出形成し、図示せぬがこれと対向する溶着ボス２の先端面２ａの中心には、該凸部５ｂと略同一な角錐形状の凹部２ｂを形成した構成が、前記図１〜図３に示した第１実施例とは異なり、それ以外の構成は図１〜図３に示した第１実施例と同じものである。 Next, the configuration of the fourth embodiment of the present invention will be described with reference to FIG.
In the fourth embodiment, as shown in FIGS. 6A to 6C, a pyramid-shaped convex portion 5b is formed at the center of the contact surface 5a of the welding jig 5, and this is not shown. Unlike the first embodiment shown in FIGS. 1 to 3, the configuration in which the pyramid-shaped concave portion 2 b substantially the same as the convex portion 5 b is formed at the center of the front end surface 2 a of the opposing welding boss 2. The other configuration is the same as that of the first embodiment shown in FIGS.

図示例では、溶着治具５の当接面５ａから四角錐形状の凸部５ｂを突出させて、これと略同一な四角錐形状の凹部２ｂを溶着ボス２の先端面２ａに形成している。
その他の例として、溶着治具５の凸部５ｂと溶着ボス２の凹部２ｂを、五角錐やそれ以上の多角錐形状に形成することも可能である。
従って、図６に示す第４実施例も、上述した第１実施例と同様な作用効果が得られる。 In the illustrated example, a quadrangular pyramid-shaped convex portion 5 b is projected from the contact surface 5 a of the welding jig 5, and a quadrangular pyramid-shaped concave portion 2 b that is substantially the same is formed on the distal end surface 2 a of the welding boss 2. .
As another example, it is also possible to form the convex part 5b of the welding jig 5 and the concave part 2b of the welding boss 2 in a pentagonal pyramid shape or more.
Therefore, the fourth embodiment shown in FIG. 6 can obtain the same effects as those of the first embodiment described above.

尚、上記実施例では、本発明の熱カシメ連結構造Ａ及び熱カシメ連結方法をレンズシャッタＢの部材連結に使用した場合を示したが、これに限定されず、それ以外に例えば携帯電話やレンズ駆動装置などの小型機器において夫々の部材連結に使用したり、小型以外の機器の部材連結に使用しても良い。
この場合でも上述した各実施例と同等の作用効果が得られる。従って、そのようなものも本発明に含まれる。 In the above embodiment, the case where the heat caulking connection structure A and the heat caulking connection method of the present invention are used for connecting the members of the lens shutter B is shown, but the present invention is not limited to this. You may use for each member connection in small apparatuses, such as a drive apparatus, and may be used for the member connection of apparatuses other than small size.
Even in this case, the same effects as the above-described embodiments can be obtained. Therefore, such a thing is also included in the present invention.

本発明の熱カシメ連結構造及び熱カシメ連結方法の第１実施例を示す平面図であって、レンズシャッタに使用した例を示したものである。It is a top view which shows 1st Example of the heat caulking connection structure and heat caulking connection method of this invention, Comprising: The example used for the lens shutter is shown. 本発明の熱カシメ連結構造及び熱カシメ連結方法の熱カシメ工程の説明断面図であり、（ａ）が熱カシメ開始時を示し、（ｂ）が熱カシメ途中の状態を示し、（ｃ）が熱カシメ完了時を示している。It is explanatory drawing sectional drawing of the heat caulking process of the heat caulking connection structure and the heat caulking connection method of this invention, (a) shows the time of heat caulking start, (b) shows the state in the middle of heat caulking, (c) The time when heat caulking is completed is shown. 本発明の熱カシメ連結構造及び熱カシメ連結方法に用いられる溶着治具であり、（ａ）が溶着治具の斜視図であり、（ｂ）が同正面図であり、（ｃ）が同側面図である。It is a welding jig used for the heat caulking connection structure and the heat caulking connection method of the present invention, (a) is a perspective view of the welding jig, (b) is the front view, and (c) is the same side surface. FIG. 本発明の熱カシメ連結構造及び熱カシメ連結方法の第２実施例を示し、（ａ）が溶着治具の斜視図であり、（ｂ）が同正面図であり、（ｃ）が同側面図である。The 2nd Example of the heat caulking connection structure and heat caulking connection method of this invention is shown, (a) is a perspective view of a welding jig, (b) is the same front view, (c) is the same side view It is. 本発明の熱カシメ連結構造及び熱カシメ連結方法の第３実施例を示し、（ａ）が溶着治具の斜視図であり、（ｂ）が同正面図であり、（ｃ）が同側面図である。The 3rd Example of the heat caulking connection structure and heat caulking connection method of this invention is shown, (a) is a perspective view of a welding jig, (b) is the same front view, (c) is the same side view It is. 本発明の熱カシメ連結構造及び熱カシメ連結方法の第４実施例を示し、（ａ）が溶着治具の斜視図であり、（ｂ）が同正面図であり、（ｃ）が同側面図である。The 4th Example of the heat caulking connection structure and heat caulking connection method of this invention is shown, (a) is a perspective view of a welding jig, (b) is the same front view, (c) is the same side view It is. 従来の熱カシメ連結構造及び熱カシメ連結方法の一例を示す説明断面図であり、（ａ）が熱カシメ開始時を示し、（ｂ）が熱カシメ完了時を示している。It is explanatory sectional drawing which shows an example of the conventional heat caulking connection structure and a heat caulking connection method, (a) shows the time of heat caulking start, (b) has shown the time of heat caulking completion.

符号の説明Explanation of symbols

１ 一方の部材（シャッタ地板） ２ 溶着ボス
２ａ 先端面 ２ｂ 凹部
３ 他方の部材（押え板） ４ 孔（嵌合孔）
５ 溶着治具 ５ａ 当接面
５ｂ 凸部
DESCRIPTION OF SYMBOLS 1 One member (shutter base plate) 2 Welding boss | hub 2a Front end surface 2b Recessed part 3 Other member (pressing board) 4 Hole (fitting hole)
5 welding jig 5a contact surface 5b convex part

Claims (4)

一方の部材に設けられた溶着ボスを、他方の部材に設けられた孔に挿通し、前記溶着ボスの先端に、溶着治具による加熱溶融で前記孔径よりも大径なカシメ部を形成して、前記一方の部材と前記他方の部材とを連結した熱カシメ連結構造において、
前記溶着ボスの先端面の中心側に、前記溶着治具の当接面の中心側に形成された凸部と略同一形状で嵌め合う凹部を形成したことを特徴とする熱カシメ連結構造。 A welding boss provided on one member is inserted into a hole provided on the other member, and a crimped portion having a diameter larger than the hole diameter is formed at the tip of the welding boss by heating and melting with a welding jig. In the heat caulking connection structure in which the one member and the other member are connected,
A heat caulking connection structure characterized in that a concave portion that fits in substantially the same shape as a convex portion formed on the center side of the contact surface of the welding jig is formed on the center side of the front end surface of the welding boss. 前記溶着治具の当接面が、その外周側に設けた平面部と、該平面部から中心側に向けた傾斜面により形成された凸部とを有し、該当接面の平面部と凸部との加圧嵌合で、前記溶着ボスの先端面の凹部の外周部を外側に押し出すように圧接させたことを特徴とする請求項１に記載の熱カシメ連結構造。   The contact surface of the welding jig has a flat portion provided on the outer peripheral side thereof, and a convex portion formed by an inclined surface directed from the flat portion toward the center side. The heat caulking connection structure according to claim 1, wherein the outer peripheral portion of the concave portion of the front end surface of the welding boss is pressed to the outside by pressure fitting with the portion. 一方の部材に設けられた溶着ボスを、他方の部材に設けられた孔に挿通し、前記溶着ボスの先端面に溶着治具の当接面を圧接して、該孔から突き出た前記溶着ボスの先端部分を加熱溶融することにより、前記孔径よりも大径なカシメ部を形成して、前記一方の部材と前記他方の部材とを連結する熱カシメ連結方法において、
前記溶着ボスの先端面の中心側に形成された凹部と、該凹部と対応して前記溶着治具の当接面の中心側に形成された該凹部と略同一形状の凸部とを嵌合させて加熱溶融することを特徴とする熱カシメ連結方法。 The welding boss provided in one member is inserted into the hole provided in the other member, the contact surface of the welding jig is pressed against the tip surface of the welding boss, and the welding boss protruding from the hole In the thermal caulking connection method for forming the crimped portion larger than the hole diameter by heating and melting the tip portion of the first member and the other member,
A concave portion formed on the center side of the front end surface of the welding boss and a convex portion having substantially the same shape as the concave portion formed on the central side of the contact surface of the welding jig corresponding to the concave portion are fitted. And a heat caulking connection method characterized by heating and melting. 前記溶着治具の当接面の外周側に設けた前記平面部と、該平面部から中心側に向かう傾斜面にて形成された前記凸部との加圧嵌合により、前記溶着ボスの先端面の凹部の外周部を外側に押し出すようにしたことを特徴とする請求項３に記載の熱カシメ連結方法。
The tip of the welding boss is formed by press fitting between the flat portion provided on the outer peripheral side of the contact surface of the welding jig and the convex portion formed on the inclined surface from the flat portion toward the center. The heat caulking connection method according to claim 3, wherein the outer peripheral portion of the concave portion of the surface is pushed outward.
JP2006354151A 2006-12-28 2006-12-28 Heat caulking connecting structure and heat caulking connecting method Pending JP2008162125A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2016067099A (en) * 2014-09-24 2016-04-28 アスモ株式会社 Manufacturing method for fixing structure, manufacturing method for rotating body, fixing structure, rotating body and motor
JP2017508923A (en) * 2013-12-31 2017-03-30 プラスチック・オムニウム・アドヴァンスド・イノベーション・アンド・リサーチ How to secure an element to a pin
CN108349169A (en) * 2015-11-02 2018-07-31 泰科电子日本合同会社 Fixture construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2017508923A (en) * 2013-12-31 2017-03-30 プラスチック・オムニウム・アドヴァンスド・イノベーション・アンド・リサーチ How to secure an element to a pin
JP2016067099A (en) * 2014-09-24 2016-04-28 アスモ株式会社 Manufacturing method for fixing structure, manufacturing method for rotating body, fixing structure, rotating body and motor
CN108349169A (en) * 2015-11-02 2018-07-31 泰科电子日本合同会社 Fixture construction

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