JPH0732491A - Joint structure of molded products - Google Patents
Joint structure of molded productsInfo
- Publication number
- JPH0732491A JPH0732491A JP17801593A JP17801593A JPH0732491A JP H0732491 A JPH0732491 A JP H0732491A JP 17801593 A JP17801593 A JP 17801593A JP 17801593 A JP17801593 A JP 17801593A JP H0732491 A JPH0732491 A JP H0732491A
- Authority
- JP
- Japan
- Prior art keywords
- molded body
- joint
- protrusion
- joint structure
- mounting hole
- 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.)
- Pending
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
- 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
- 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
- B29C66/50—General aspects of joining tubular articles; General aspects of joining long products, i.e. bars or profiled elements; General aspects of joining single elements to tubular articles, hollow articles or bars; General aspects of joining several hollow-preforms to form hollow or tubular articles
- B29C66/51—Joining tubular articles, profiled elements or bars; Joining single elements to tubular articles, hollow articles or bars; Joining several hollow-preforms to form hollow or tubular articles
- B29C66/54—Joining several hollow-preforms, e.g. half-shells, to form hollow articles, e.g. for making balls, containers; Joining several hollow-preforms, e.g. half-cylinders, to form tubular articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/71—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material characterised by the composition of the plastics material of the parts to be joined
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Lining Or Joining Of Plastics Or The Like (AREA)
Abstract
(57)【要約】
【目的】接合部の箇所を増やすことなく、接合部の強度
を増大させることのできる成形体の接合構造を提供す
る。
【構成】一方の成形体１と他方の成形体２の接合構造に
おいて、他方の成形体２の取付孔２１に嵌合される一方
の成形体１の突起１１が先端部が開口された中空の筒状
であることを特徴とする成形体の接合構造。
(57) [Abstract] [Purpose] To provide a joint structure for a molded article, which can increase the strength of the joint without increasing the number of joints. In a joining structure of one molded body 1 and the other molded body 2, a protrusion 11 of one molded body 1 fitted in a mounting hole 21 of the other molded body 2 is a hollow body having an open end. A joined structure for a molded body, which is characterized by being tubular.
Description
【産業上の利用分野】本発明は、一方の熱可塑性合成樹
脂製の成形体が、他方の成形体に溶着により接合された
接合構造に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a joining structure in which one molded article made of thermoplastic synthetic resin is joined to the other molded article by welding.
【０００１】[0001]
【従来の技術】一般に、従来から熱可塑性合成樹脂製の
成形体に、他の成形体が接合されて一体となされた接合
部の構造は、ネジ止めの他、溶着によるもの、スピード
ナットによるもの等が多く採り入れられている。例え
ば、溶着による例としては、溶着用ボスを有する合成樹
脂製の基体と、この溶着用ボスの嵌まり合う取付孔を有
する取付体において、上記溶着用ボスが上記取付孔に挿
通され、その先端が溶着されてなる溶着取付体が、実公
昭61-6110号公報に記載されている。2. Description of the Related Art In general, the structure of a joint portion in which a molded body made of a thermoplastic synthetic resin and another molded body have been conventionally united is one in which a screw is used, welding is performed, and a speed nut is used. Etc. have been adopted. For example, as an example of welding, in a base body made of a synthetic resin having a welding boss and a mounting body having a mounting hole into which the welding boss is fitted, the welding boss is inserted into the mounting hole, and the tip thereof is inserted. A welded attachment body obtained by welding is described in Japanese Utility Model Publication No. 61-6110.
【０００２】この溶着による接合構造の従来の技術に関
して、図によって下記に更に詳しく説明する。図４の
（Ａ）は、従来の熱可塑性合成樹脂製の成形体の接合構
造の断面図であり、図４の（Ｂ）は、その溶着により接
合された接合構造の断面図である。図４の（Ａ）におい
て、１０は一方の成形体であり、この成形体１０から円
柱状の突起１０１が突き出している。２０は他方の成形
体であり、この成形体２０には、取付孔２０１が設けら
れていて、この取付孔２０１に突起１０１が嵌合された
状態を示すものであり、図４の（Ｂ）は、高周波ウエル
ダーにより図４の（Ａ）の突起１０１の先端が溶着され
溶着部１０２が形成されてできた接合構造を示す。The conventional technique of the joining structure by welding will be described in more detail below with reference to the drawings. 4A is a cross-sectional view of a joint structure of a conventional thermoplastic synthetic resin molded body, and FIG. 4B is a cross-sectional view of the joint structure joined by welding. In FIG. 4A, 10 is one molded body, and a cylindrical protrusion 101 is projected from this molded body 10. Reference numeral 20 denotes the other molded body, and this molded body 20 is provided with a mounting hole 201, and shows a state in which the protrusion 101 is fitted in this mounting hole 201, and FIG. 4A shows a joining structure formed by welding the tips of the protrusions 101 of FIG. 4A by a high-frequency welder to form a welded portion 102.
【０００３】図５は、従来の成形体の接合構造の他の例
を示す断面図である。図５における成形体の接合構造
は、図４とほぼ同様であり、従来と同様の突起１０１が
予め穿設された取付孔２０１に嵌合されて、高周波ウエ
ルダーによる溶着に代えてスピードナット３０により締
結され接合された接合構造を示すものである。FIG. 5 is a cross-sectional view showing another example of a conventional joint structure for molded articles. The joining structure of the molded body in FIG. 5 is almost the same as that in FIG. 4, and the same protrusion 101 as in the conventional case is fitted into the mounting hole 201 preliminarily drilled, and the speed nut 30 is used instead of welding by the high-frequency welder. It shows a joined structure that is fastened and joined.
【０００４】[0004]
【発明が解決しょうとする課題】しかしながら、上記の
ような従来の接合部の構造を有するものにおいては、溶
着された突起の強度が不足してこの部分より破損に至る
欠点があり、これを解消するために円柱状の突起の径を
増大させた接合構造が考えられるが、この突起のある部
分が過大の厚肉となるため、成形時にこの突起のある反
対側の表面に冷却むらによる異常収縮、所謂、ひけがで
て、製品の外観品質を著しく損なうものとなる問題があ
る。これを避けるためには、従来通りひけを誘発しない
程度の突起の径にしておき突起の数を増やして接合部の
強度の増加を図ることができるが、このために金型の製
作工数が増えるばかりでなく、接合加工の工数が増えコ
ストアップを招く結果となる。However, in the one having the above-mentioned conventional structure of the joint portion, there is a drawback that the strength of the welded projection is insufficient and the portion is damaged, which is solved. In order to achieve this, a joint structure with an increased diameter of the columnar protrusion is conceivable.However, since the part with this protrusion becomes excessively thick, abnormal shrinkage due to uneven cooling on the surface on the opposite side with this protrusion during molding However, there is a problem that so-called injuries occur and the appearance quality of the product is significantly impaired. In order to avoid this, it is possible to increase the number of the protrusions by increasing the diameter of the protrusions so as not to induce sink marks as in the past, and to increase the strength of the joint, but this increases the man-hours for manufacturing the mold. Not only that, the number of man-hours required for the joining process increases, resulting in an increase in cost.
【０００５】本発明は、このような上記の問題点に着目
してなされたものであり、これらの問題点を解消し、接
合部の箇所を増やすことなく、接合部の強度を増大させ
た成形体の接合構造を提供することにある。The present invention has been made by paying attention to the above-mentioned problems, and a molding in which these problems are solved and the strength of the joint is increased without increasing the number of joints. To provide a joint structure for the body.
【０００６】[0006]
【課題を解決するための手段】本発明の成形体の接合構
造においては、一方の熱可塑性合成樹脂製の成形体に設
けられた突起が、他方の成形体に設けられた取付孔に嵌
め合わされ、この突起が溶融され、溶着により接合され
た成形体の接合構造において、上記取付孔に嵌合される
突起が先端部の開口された中空の筒状であることを特徴
とする。In the joint structure for a molded body according to the present invention, the protrusion provided on one molded body made of thermoplastic synthetic resin is fitted into the mounting hole provided on the other molded body. In the joint structure of the molded body in which the protrusion is melted and joined by welding, the protrusion fitted into the mounting hole is a hollow cylinder having an opening at the tip.
【０００７】上記の取付孔に嵌合される突起は、厚肉と
なるのを避けるために中空の筒状となされることにより
突起部の容積を削減し、これによってひけを発生させる
ことなく、十分な接合強度を有する接合構造とすること
が可能である。The protrusion fitted into the above-mentioned mounting hole is formed into a hollow cylindrical shape in order to avoid becoming thick, thereby reducing the volume of the protrusion portion and thereby causing no sink mark. It is possible to obtain a joint structure having sufficient joint strength.
【０００８】本発明の成形体の接合構造における成形体
としては、熱可塑性合成樹脂であるポリオレフイン系樹
脂のポリエチレン樹脂、ポリプロピレン樹脂やＡＢＳ樹
脂等のものが好適である。As the molded product in the bonded structure of the molded product of the present invention, a polyethylene resin such as a polyolefin resin which is a thermoplastic synthetic resin, a polypropylene resin or an ABS resin is suitable.
【０００９】[0009]
【作用】本発明の成形体の接合構造においては、一方の
熱可塑性合成樹脂製の成形体に設けられた突起が、他方
の成形体に設けられた取付孔に嵌め合わされ、この突起
が溶融され、溶着により接合された成形体の接合構造に
おいて、上記取付孔に嵌合される突起が先端部の開口さ
れた中空の筒状であることにより、接合部の箇所を増や
すことなく、接合部の強度を増大させた接合構造とする
ことができる。In the joint structure of the molded body of the present invention, the protrusion provided on one molded body made of thermoplastic synthetic resin is fitted into the mounting hole provided on the other molded body, and the protrusion is melted. In the joint structure of the molded body joined by welding, the protrusion fitted into the mounting hole is a hollow cylinder having an opening at the tip end, so that the number of joint portions can be increased without increasing the number of joint portions. A bonded structure with increased strength can be obtained.
【００１０】[0010]
【実施例】以下、本発明の実施例を図面を参照して説明
する。図１は、本発明の成形体の接合構造の一例を示す
斜視図である。図２は、図１のＡ−Ａ矢視断面図であ
り、接合部の嵌合された構造を示し、図３は、図２の溶
着された接合部の構造を示す断面図である。Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view showing an example of a joint structure of a molded body of the present invention. 2 is a cross-sectional view taken along the line AA of FIG. 1, showing the fitted structure of the joint, and FIG. 3 is a cross-sectional view showing the structure of the welded joint of FIG.
【００１１】図１において、１は熱可塑性合成樹脂製の
一方の成形体であり、２は他方の成形体であり、中央部
において接合されるＡＢＳ樹脂製の自動車用ウインドシ
ールドの例を示すものである。図２において、１１は一
方の成形体１の端部の近傍に設けられた中空の筒状の突
起であり、他方の成形体２の取付孔２１に嵌合された状
態を示すものであり、２２は突起１１の先端が溶融して
侵入するための凹陥部である。In FIG. 1, 1 is a molded body made of thermoplastic synthetic resin and 2 is the other molded body, showing an example of a windshield for automobiles made of ABS resin, which is joined at the central portion. Is. In FIG. 2, 11 is a hollow cylindrical protrusion provided near the end of one molded body 1, and shows a state of being fitted into the mounting hole 21 of the other molded body 2, Reference numeral 22 is a concave portion into which the tip of the protrusion 11 melts and enters.
【００１２】上記中空の筒状の突起１１は、従来のボス
状の突起に比較して筒条の薄肉の壁体であるから、突起
１１の容積が一箇所に集中することなく分散されて、成
形体２に厚肉部のできるのを回避することができ、ひけ
の発生しない成形加工が可能であり、且つ、接合部の接
合面積を増加させることができるので、接合強度を増大
させる点でも効果的である。Since the hollow cylindrical protrusion 11 is a thin wall member having a cylindrical shape as compared with the conventional boss-shaped protrusion, the volume of the protrusion 11 is dispersed without being concentrated in one place, It is possible to avoid the formation of a thick portion in the molded body 2, it is possible to perform molding without sink marks, and it is possible to increase the joint area of the joint portion, so that the joint strength is also increased. It is effective.
【００１３】図３は、図２において嵌合された接続部の
突起１１の先端側より、高周波ウエルダーのホーン３
（仮想線で示す）を、押し当てて先端部をほぼ２００℃
に加熱溶融させ、他方の成形体２の取付孔２１の周囲の
凹陥部２２に侵入させて接合させた状態を示すものであ
る。FIG. 3 shows the horn 3 of the high-frequency welder from the tip side of the projection 11 of the connecting portion fitted in FIG.
(Shown in phantom) to press the tip to approximately 200 ° C
The figure shows a state in which it is heated and melted, and is made to penetrate into the concave portion 22 around the mounting hole 21 of the other molded body 2 to be joined.
【００１４】[0014]
【発明の効果】本発明の成形体の接合構造においては、
取付孔に嵌合される突起が先端部の開口された中空の筒
状であることにより、接合部の箇所を増やすことなく、
接合部の強度を増大させた接合構造とすることができ
る。従って、成形体の接合構造として好適に用いられ
る。EFFECT OF THE INVENTION In the joint structure of the molded article of the present invention,
Since the protrusion that fits into the mounting hole is a hollow cylinder with an open tip, you do not need to increase the number of joints.
It is possible to obtain a joint structure in which the strength of the joint is increased. Therefore, it is preferably used as a joint structure of a molded body.
【図１】本発明の成形体の接合構造の一例を示す斜視
図。FIG. 1 is a perspective view showing an example of a joint structure of a molded body of the present invention.
【図２】図１の接合部の嵌合された構造を示すＡ−Ａ矢
視断面図。2 is a cross-sectional view taken along the line AA showing the fitted structure of the joint portion of FIG.
【図３】図２の溶着された接合部の構造を示す断面図。3 is a cross-sectional view showing the structure of the welded joint portion of FIG.
【図４】（Ａ）は、従来の成形体の接合構造を示す断面
図。（Ｂ）は、その溶着により接合された接合構造を示
す断面図。FIG. 4A is a cross-sectional view showing a joint structure of a conventional molded body. (B) is sectional drawing which shows the joining structure joined by the welding.
【図５】従来の成形体の接合構造の他の例を示す断面
図。FIG. 5 is a cross-sectional view showing another example of a conventional joint structure for a molded body.
１ 一方の成形体 １１ 筒状の突起 ２ 他方の成形体 ２１ 取付孔 ２２ 凹陥部 DESCRIPTION OF REFERENCE NUMERALS 1 molded body 11 cylindrical protrusion 2 other molded body 21 mounting hole 22 recessed portion
Claims (1)
られた突起が、他方の成形体に設けられた取付孔に嵌め
合わされ、この突起が溶融され、溶着により接合された
成形体の接合構造において、上記取付孔に嵌合される突
起が先端部の開口された中空の筒状であることを特徴と
する成形体の接合構造。 【０００１】1. A projection provided on one molded article made of thermoplastic synthetic resin is fitted into a mounting hole provided on the other molded article, and the projection is melted and bonded by welding. In the joint structure, the joint structure of the molded body is characterized in that the protrusion fitted into the mounting hole is a hollow cylinder having an opening at the tip. [0001]
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17801593A JPH0732491A (en) | 1993-07-19 | 1993-07-19 | Joint structure of molded products |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17801593A JPH0732491A (en) | 1993-07-19 | 1993-07-19 | Joint structure of molded products |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0732491A true JPH0732491A (en) | 1995-02-03 |
Family
ID=16041080
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17801593A Pending JPH0732491A (en) | 1993-07-19 | 1993-07-19 | Joint structure of molded products |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0732491A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10933590B2 (en) * | 2019-03-15 | 2021-03-02 | GM Global Technology Operations LLC | Joining thermoplastic workpieces with induction heating |
| JP2021160386A (en) * | 2020-03-30 | 2021-10-11 | 株式会社豊田自動織機 | Vehicular component |
-
1993
- 1993-07-19 JP JP17801593A patent/JPH0732491A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10933590B2 (en) * | 2019-03-15 | 2021-03-02 | GM Global Technology Operations LLC | Joining thermoplastic workpieces with induction heating |
| JP2021160386A (en) * | 2020-03-30 | 2021-10-11 | 株式会社豊田自動織機 | Vehicular component |
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