JPH09323360A - Thermal caulking structure - Google Patents

Thermal caulking structure

Info

Publication number
JPH09323360A
JPH09323360A JP8163750A JP16375096A JPH09323360A JP H09323360 A JPH09323360 A JP H09323360A JP 8163750 A JP8163750 A JP 8163750A JP 16375096 A JP16375096 A JP 16375096A JP H09323360 A JPH09323360 A JP H09323360A
Authority
JP
Japan
Prior art keywords
boss
thermal caulking
thermal
fixing portion
caulking structure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP8163750A
Other languages
Japanese (ja)
Other versions
JP3470742B2 (en
Inventor
Takeshi Sato
武志 佐藤
Shoichi Hashimoto
正一 橋本
Harufumi Yokoyama
治文 横山
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Kokusai Electric Corp
Original Assignee
Kokusai Electric Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Kokusai Electric Corp filed Critical Kokusai Electric Corp
Priority to JP16375096A priority Critical patent/JP3470742B2/en
Publication of JPH09323360A publication Critical patent/JPH09323360A/en
Application granted granted Critical
Publication of JP3470742B2 publication Critical patent/JP3470742B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • 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
    • 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
    • B29C66/47—Joining single elements to sheets, plates or other substantially flat surfaces
    • B29C66/474—Joining single elements to sheets, plates or other substantially flat surfaces said single elements being substantially non-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
    • B29C66/81411—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
    • B29C66/81422—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 convex
    • 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

Abstract

PROBLEM TO BE SOLVED: To provide a thermal caulking structure which is capable of efficiently improving the adhesion between an enclosure and a push-button member. SOLUTION: In a thermal caulking structure consisting of a boss 19, formed protruding from a plastic enclosure 15, with which the anchorage part 17 of a fitting is engaged, for thermally deforming the protrusion of the boss, the amount of shrinkage is reduced by forming the protrusion into a flange form having a larger diameter than an engaging hole 18 in the anchorage part 17 and a flat thin wall. Thus it is possible to perform the thermal caulking and thereby eliminate the shaking at a minimum required amount of heating and a minimum required amount of application of pressure.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【発明の属する技術分野】本発明は、プラスチック部品
をプラスチック製の筐体に取付ける場合の熱カシメ構造
に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a thermal caulking structure for attaching a plastic part to a plastic housing.

【０００２】[0002]

【従来の技術】小型電子機器等、種々の機器の多くはプ
ラスチック製の筐体を具備しており、斯かる筐体に各種
部品を取付ける構造として熱カシメ構造が広く用いられ
ている。以下、熱カシメ構造を携帯用小型電子機器の筐
体に、プッシュ釦を熱カシメした場合について説明す
る。2. Description of the Related Art Most of various devices such as small electronic devices are provided with a housing made of plastic, and a thermal caulking structure is widely used as a structure for mounting various parts to the housing. Hereinafter, a case where the push-button is heat-crimped to the housing of the portable small electronic device having the heat-crimped structure will be described.

【０００３】図３〜図５に於いて従来の押釦スイッチ取
付構造について説明する。A conventional push button switch mounting structure will be described with reference to FIGS.

【０００４】図中１は小型電子機器の筐体の一部である
フロントケースを示し、２は押釦部材を示す。前記フロ
ントケース１には円形状の釦孔３が穿設され、該釦孔３
と所要距離はなれた位置にボス４、突起５が穿設され、
前記押釦部材２は前記ボス４に熱カシメされることによ
り前記フロントケース１の裏面に取付けられる。In the figure, reference numeral 1 denotes a front case which is a part of a housing of a small electronic device, and 2 denotes a push button member. A circular button hole 3 is formed in the front case 1, and the button hole 3
A boss 4 and a protrusion 5 are formed at a position separated by a required distance from
The push button member 2 is attached to the back surface of the front case 1 by being heat caulked by the boss 4.

【０００５】前記押釦部材２は一端部に円形状の釦部６
が設けられ、該釦部６の裏面には十字形状の突起９が形
成されている。他端には固着部７が形成され、前記釦部
６と前記固着部７を接続する中間部には蛇行した帯状の
アーム８が形成されている。前記釦部６は前記釦孔３に
出入自在に嵌合し、前記突起９は図示しない配線基板に
実装されたスイッチに当接する様になっている。前記固
着部７の中心には円形状の固着孔１０が穿設され、、該
固着孔１０は前記ボス４と遊嵌可能である。The push button member 2 has a circular button portion 6 at one end.
Is provided, and a cross-shaped projection 9 is formed on the back surface of the button portion 6. A fixing portion 7 is formed at the other end, and a meandering band-shaped arm 8 is formed at an intermediate portion connecting the button portion 6 and the fixing portion 7. The button portion 6 is fitted in the button hole 3 so as to be freely inserted and removed, and the protrusion 9 is brought into contact with a switch mounted on a wiring board (not shown). A circular fixing hole 10 is formed at the center of the fixing portion 7, and the fixing hole 10 can be loosely fitted in the boss 4.

【０００６】図５で示す治具１１は前記ボス４を加熱、
加圧して熱カシメするものであり、前記治具１１の底面
に前記ボスが固化した時に、上面が僅かに湾曲する様な
凹面である加圧面１２が形成されている。A jig 11 shown in FIG. 5 heats the boss 4,
The jig 11 is heated and caulked, and a pressing surface 12 is formed on the bottom surface of the jig 11, which is a concave surface whose upper surface is slightly curved when the boss is solidified.

【０００７】前記釦部６を前記釦孔３より露出させ、出
入自在に嵌合しつつ、前記アーム８を前記突起５に当接
させ、前記固着孔１０を前記ボス４に嵌合する。該ボス
４の前記固着孔１０より突出した先端部１３に前記治具
１１を当てて、該治具１１を介して前記ボス４を加熱、
加圧し、該ボス４の先端部１３を潰して、図４中実線で
示す逆円錐状に熱カシメする。熱カシメ後、前記ボス４
が冷却すると、特に頭部が図４中の２点鎖線の如く収縮
する。前述した様に先端部１３は逆円錐状であるので、
収縮により図中上下方向、左右方向に前記ボス４、前記
固着部７間に隙間が生じ、熱カシメ不良を起こす虞れが
ある。斯かる熱カシメ不良を防止する方法としては、従
来熱カシメ時の加熱温度、加圧力を調整し、冷却、収縮
後も間隔が生じることのない様にしていた。While the button portion 6 is exposed from the button hole 3 and is fitted in and out freely, the arm 8 is brought into contact with the protrusion 5 and the fixing hole 10 is fitted into the boss 4. The jig 11 is applied to the tip portion 13 of the boss 4 protruding from the fixing hole 10, and the boss 4 is heated through the jig 11.
Pressure is applied to crush the tip portion 13 of the boss 4 and heat caulking is performed in an inverted conical shape shown by a solid line in FIG. After heat crimping, the boss 4
When is cooled, especially the head contracts as shown by the chain double-dashed line in FIG. As described above, since the tip portion 13 has an inverted conical shape,
Due to the contraction, a gap may be formed between the boss 4 and the fixing portion 7 in the vertical direction and the horizontal direction in the figure, which may cause thermal caulking failure. As a method of preventing such a heat crimping defect, conventionally, a heating temperature and a pressurizing force at the time of heat crimping are adjusted so that no interval occurs even after cooling and shrinking.

【０００８】[0008]

【発明が解決しようとする課題】然し乍ら上記した従来
の押釦スイッチ取付構造では、カシメ不良を抑制する
為、加熱温度を高く、又加圧力を大きくする必要があっ
た。ところが、ボス４が細すぎたり、或は筐体周囲の肉
厚が薄い場合、熱、圧力による影響が筐体に及び筐体表
面にプラスチック材料特有の白化現象を起こすことがあ
り、製品価値を喪失させる虞れがある等の不具合があっ
た。However, in the conventional push button switch mounting structure described above, it is necessary to increase the heating temperature and increase the pressing force in order to suppress the crimping defect. However, if the boss 4 is too thin or the wall thickness around the housing is thin, the effects of heat and pressure may cause a whitening phenomenon peculiar to the plastic material on the housing and the surface of the housing. There was a problem that it might be lost.

【０００９】本発明は、上記実情に鑑みなしたものであ
って、熱カシメ時に筐体が白化現象を起こすことなく、
効率よく筐体と押釦部材との密着性を向上させることの
できる熱カシメ構造を提供しようとするものである。The present invention has been made in view of the above-mentioned circumstances, and the case does not cause a whitening phenomenon when heat caulking.
An object of the present invention is to provide a thermal crimping structure that can efficiently improve the adhesion between the housing and the push button member.

【００１０】[0010]

【課題を解決するための手段】本発明は、プラスチック
製筐体にボスを突設し、該ボスに取付部品の固着部を嵌
合させ、前記ボスの突出部を熱変形させる熱カシメ構造
に於いて、突出部を固着部の嵌合孔より大径で偏平薄肉
のフランジ状に形成する熱カシメ構造に係り、前記筐体
のボスの周囲に放射状にリブを突設した熱カシメ構造に
係り、前記固着部の径をボスに対して嵌合可能な範囲で
最小径とする熱カシメ構造に係るものであり、必要最小
な加熱量、加圧力で熱カシメでき、リブの弾性変形によ
り、軸心方向のガタツキが抑えられ、ボスと嵌合孔とが
締り嵌めとなり半径方向のガタツキも抑えられる。SUMMARY OF THE INVENTION The present invention provides a thermal caulking structure in which a boss is projectingly provided on a plastic housing, a fixing portion of a mounting component is fitted to the boss, and the protruding portion of the boss is thermally deformed. In regard to the thermal crimping structure in which the protruding portion is formed in a flat thin flange shape with a diameter larger than the fitting hole of the fixing portion, and the thermal crimping structure in which ribs are radially projected around the boss of the housing is used. The present invention relates to a thermal crimping structure in which the diameter of the fixing portion is set to the minimum diameter within a range that can be fitted to the boss, and the thermal crimping can be performed with a required minimum heating amount and pressing force. The rattling in the axial direction is suppressed, and the boss and the fitting hole are tightly fitted to each other, and the rattling in the radial direction is also suppressed.

【００１１】[0011]

【発明の実施の形態】以下、本発明の実施の形態につい
て図面を参照して説明する。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

【００１２】図１は図３で示す従来の押し釦スイッチ取
付構造のＡ−Ａ矢視相当図であり、図中１５はフロント
ケースを示し、１６は押釦部材を示す。該押釦部材１６
は前述した従来の押し釦部材２と同様に形成され、前記
フロントケース１５に取付けられる。FIG. 1 is a view corresponding to the arrow AA of the conventional push button switch mounting structure shown in FIG. 3, in which 15 indicates a front case and 16 indicates a push button member. The push button member 16
Is formed in the same manner as the conventional push button member 2 described above, and is attached to the front case 15.

【００１３】前記押釦部材１６の一端に固着部１７が形
成され、該固着部１７は中央に円形状の固着孔１８を有
し、該固着孔１８は前記フロントケース１５に突設され
るボス１９に嵌合され、熱カシメされる。A fixing portion 17 is formed at one end of the push button member 16, and the fixing portion 17 has a circular fixing hole 18 in the center, and the fixing hole 18 is provided with a boss 19 projecting from the front case 15. Is fitted and heat crimped.

【００１４】前記固着孔１８と前記ボス１９との隙間は
支障なく嵌合できる範囲で、できる限り小さくしてい
る。該ボス１９の周囲には、該ボス１９を中心として放
射状にリブ２０が所要数突設されている。The gap between the fixing hole 18 and the boss 19 is made as small as possible within a range where fitting can be performed without any trouble. Around the boss 19, a required number of ribs 20 are radially provided centering around the boss 19.

【００１５】治具２１は前記ボス１９を加熱、加圧して
熱カシメするものであり、加圧面２２は平らであり、前
記固着孔１８より充分大きくしている。従って、前記加
圧面２２は前述した従来の治具１１の加圧面１２より大
きくなっている。前記治具２１の底面略中央には、前記
ボス１９を加熱、加圧した場合、先端部２４が広がり易
い様に突起２３が設けられている。The jig 21 heats and pressurizes the boss 19 to perform heat caulking, and the pressing surface 22 is flat and is sufficiently larger than the fixing hole 18. Therefore, the pressing surface 22 is larger than the pressing surface 12 of the conventional jig 11 described above. A protrusion 23 is provided approximately in the center of the bottom surface of the jig 21 so that the tip portion 24 can easily spread when the boss 19 is heated and pressed.

【００１６】前記ボス１９に前記固着孔１８を嵌合さ
せ、前記ボス１９の前記固着孔１８より突出した先端部
２４に前記治具２１を当接させ、加熱、加圧して熱カシ
メする。The fixing hole 18 is fitted into the boss 19, and the jig 21 is brought into contact with the tip portion 24 of the boss 19 protruding from the fixing hole 18, and heat and pressure are applied to heat-crimp it.

【００１７】前記ボス１９の先端部２４は前記治具２１
の形状に倣い円板状に偏平に変形され、前記先端部２４
の直径は前記固着孔１８の直径に比べて充分に大きくな
る。前記突起２３は前記ボス１９の先端部２４が加熱さ
れ軟化した場合に半径方向に容易に広がる様に設けられ
ている。又、前記治具２１の加圧面２２が大きいので、
前記先端部２４への伝熱面積が大きく、又前記先端部２
４は平坦で肉厚が薄い為、先端部２４を局部的に加熱す
ることができ、加熱量が少なくてすむ。従って、加熱温
度、加圧力を小さくできるので筐体への影響を抑制でき
る。The tip portion 24 of the boss 19 is provided with the jig 21.
Is deformed into a flat disc shape following the shape of FIG.
Has a diameter sufficiently larger than the diameter of the fixing hole 18. The protrusions 23 are provided so as to easily spread in the radial direction when the tip 24 of the boss 19 is heated and softened. Also, since the pressing surface 22 of the jig 21 is large,
The heat transfer area to the tip portion 24 is large, and the tip portion 2
Since No. 4 is flat and thin, the tip portion 24 can be locally heated, and the heating amount is small. Therefore, since the heating temperature and the applied pressure can be reduced, the influence on the housing can be suppressed.

【００１８】前記ボス１９への加熱を少熱量、且局部的
とすることができるので、該ボス１９冷却時に、熱収縮
も局部的で且少なく抑えることができる。更に、前記ボ
ス１９は薄肉であるので肉厚方向の収縮量は少ない。Since the heating of the boss 19 can be carried out with a small amount of heat and locally, the heat shrinkage can be locally and little suppressed when the boss 19 is cooled. Furthermore, since the boss 19 is thin, the amount of shrinkage in the thickness direction is small.

【００１９】前記した様に前記ボス１９の周囲には前記
リブ２０が突設されており、前記ボス１９を加圧する際
前記リブ２０は圧縮変形している。従って、前記ボス１
９に対する加圧力を除却すると前記リブ２０の変形が復
帰し、前記固着部１７を上方に押し上げる。従って、前
記ボス１９の板厚方向の収縮量と前記リブ２０による押
上げ量が相殺され、前記固着部１７と前記ボス１９との
軸心方向のガタツキの発生が抑止される。As described above, the rib 20 is provided so as to project around the boss 19, and the rib 20 is compressed and deformed when the boss 19 is pressed. Therefore, the boss 1
When the applied pressure to 9 is removed, the deformation of the rib 20 is restored and the fixing portion 17 is pushed upward. Therefore, the amount of contraction of the boss 19 in the plate thickness direction and the amount of pushing up by the rib 20 are offset, and the rattling of the fixing portion 17 and the boss 19 in the axial direction is suppressed.

【００２０】次に、図１では説明を容易にする為前記固
着部１７と前記ボス１９との間隙を大きく示している
が、実際は前述した様に、前記固着部１７と前記ボス１
９との間隙を殆どなくしている。前記固着部１７を前記
治具２１で加熱、加圧すると前記ボス１９の中間部２５
が太鼓状に膨らむ現象が生じる。従って該中間部２５の
膨らみにより前記ボス１９と前記固着部１７とは締り嵌
め状態となる。Next, in FIG. 1, the gap between the fixing portion 17 and the boss 19 is shown large for ease of explanation, but in reality, as described above, the fixing portion 17 and the boss 1 are shown.
The gap with 9 is almost eliminated. When the fixing portion 17 is heated and pressed by the jig 21, the intermediate portion 25 of the boss 19 is
The phenomenon of bulging like a drum occurs. Therefore, due to the bulge of the intermediate portion 25, the boss 19 and the fixing portion 17 are in an interference fit state.

【００２１】而して、前記固着部１７と前記ボス１９と
は軸心方向、半径方向の隙間が完全に抑制される。Thus, a gap between the fixing portion 17 and the boss 19 in the axial direction and the radial direction is completely suppressed.

【００２２】[0022]

【発明の効果】以上述べた如く本発明によれば、ボス加
熱時の熱伝導率が向上し、ボスの収縮量が減少し必要最
小な加熱量、加圧力で熱カシメでき、更にリブを設ける
ことでリブが軸心方向のガタツキを吸収し、更にボスが
加圧されて太鼓状に膨らみ、固着孔とボスとが締り嵌め
となるので、半径方向のガタツキも抑えられる等の優れ
た効果を発揮する。As described above, according to the present invention, the thermal conductivity at the time of heating the boss is improved, the shrinkage amount of the boss is reduced, the heat can be caulked with the minimum required heating amount and pressure, and the rib is provided. As a result, the rib absorbs the rattling in the axial direction, the boss is pressed and expands in a drum shape, and the fixing hole and the boss form an interference fit, which also suppresses the rattling in the radial direction. Demonstrate.

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の実施の形態を示し、図３のＡ−Ａ矢視
相当図である。FIG. 1 shows an embodiment of the present invention and is a view corresponding to an arrow AA in FIG.

【図２】同前実施の形態に用いる治具の断面図である。FIG. 2 is a sectional view of a jig used in the same embodiment.

【図３】従来例を示す斜視図である。FIG. 3 is a perspective view showing a conventional example.

【図４】該従来例を示すＡ−Ａ矢視図である。FIG. 4 is a view on arrow AA showing the conventional example.

【図５】該従来例に用いる治具の断面図である。FIG. 5 is a sectional view of a jig used in the conventional example.

【符号の説明】[Explanation of symbols]

１５ フロントケース １６ 押釦部材 １７ 固着部 １８ 固着孔 １９ ボス ２０ リブ ２１ 治具 ２２ 加圧面 ２３ 突起 ２４ 先端部 ２５ 中間部 15 Front Case 16 Push Button Member 17 Fixing Part 18 Fixing Hole 19 Boss 20 Rib 21 Jig 22 Pressing Surface 23 Protrusion 24 Tip Part 25 Intermediate Part

Claims (3)

【特許請求の範囲】[Claims] 【請求項１】 プラスチック製筐体にボスを突設し、該
ボスに取付部品の固着部を嵌合させ、前記ボスの突出部
を熱変形させる熱カシメ構造に於いて、突出部を固着部
の嵌合孔より大径で偏平薄肉のフランジ状に形成したこ
とを特徴とする熱カシメ構造。1. A thermal caulking structure in which a boss is projectingly provided on a plastic housing, and a fixing part of a mounting component is fitted to the boss to thermally deform the projecting part of the boss. The thermal caulking structure is characterized in that it is formed in a flat thin flange shape with a diameter larger than the fitting hole of. 【請求項２】 前記筐体のボスの周囲に放射状にリブを
突設した請求項１の熱カシメ構造。2. The thermal crimping structure according to claim 1, wherein ribs are radially provided around the boss of the casing. 【請求項３】 前記固着部の径を前記ボスに対して嵌合
可能な範囲で最小径とした請求項１の熱カシメ構造。3. The thermal crimping structure according to claim 1, wherein a diameter of the fixing portion is set to a minimum diameter within a range in which the fixing portion can be fitted to the boss.
JP16375096A 1996-06-04 1996-06-04 Thermal caulking structure Expired - Fee Related JP3470742B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16375096A JP3470742B2 (en) 1996-06-04 1996-06-04 Thermal caulking structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16375096A JP3470742B2 (en) 1996-06-04 1996-06-04 Thermal caulking structure

Publications (2)

Publication Number Publication Date
JPH09323360A true JPH09323360A (en) 1997-12-16
JP3470742B2 JP3470742B2 (en) 2003-11-25

Family

ID=15779992

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16375096A Expired - Fee Related JP3470742B2 (en) 1996-06-04 1996-06-04 Thermal caulking structure

Country Status (1)

Country Link
JP (1) JP3470742B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2873321A1 (en) * 2004-07-23 2006-01-27 Inergy Automotive Systems Res METHOD FOR FIXING AN ACCESSORY IN A FUEL TANK OF PLASTIC MATERIAL
WO2015162998A1 (en) * 2014-04-24 2015-10-29 帝人株式会社 Fiber-reinforced resin joined object, intermediate and fastening rod
JP2016141078A (en) * 2015-02-03 2016-08-08 三菱電機株式会社 Welding structure

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2873321A1 (en) * 2004-07-23 2006-01-27 Inergy Automotive Systems Res METHOD FOR FIXING AN ACCESSORY IN A FUEL TANK OF PLASTIC MATERIAL
US8591798B2 (en) 2004-07-23 2013-11-26 Inergy Automotive Systems Research (Societe Anonyme) Method for fastening an accesory in a plastic fuel tank
US9399326B2 (en) 2004-07-23 2016-07-26 Plastic Omnium Advanced Innovation And Research Method for fastening an accessory in a plastic fuel tank
US9399327B2 (en) 2004-07-23 2016-07-26 Plastic Omnium Advanced Innovation And Research Method for fastening an accessory in a plastic fuel tank
WO2015162998A1 (en) * 2014-04-24 2015-10-29 帝人株式会社 Fiber-reinforced resin joined object, intermediate and fastening rod
JP5883545B1 (en) * 2014-04-24 2016-03-15 帝人株式会社 Fiber reinforced resin joined body, intermediate and fastening rod
US9556891B2 (en) 2014-04-24 2017-01-31 Teijin Limited Fiber reinforced resin joined body, intermediate body, and fastening rod
JP2016141078A (en) * 2015-02-03 2016-08-08 三菱電機株式会社 Welding structure

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