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2. 发明公开

EP1097797A1 Joining thermoplastic cases and covers by fusion 有权
标题翻译： Verbinden von thermoplastischenGehäusenmit Deckeln durch Verschmelzen
公开(公告)号：EP1097797A1
公开(公告)日：2001-05-09
申请号：EP99308673.5
申请日：1999-11-02
申请人： TOHOKU MUNEKATA Co., Ltd.
发明人： Tanaka, Masahiro , Sato, Noboru
IPC分类号： B29C65/34
CPC分类号： B29C66/542 , B29C65/342 , B29C65/3464 , B29C65/3468 , B29C65/3476 , B29C65/362 , B29C65/3676 , B29C66/12445 , B29C66/54 , B29C66/8322
摘要： A method of joining the two thermoplastic parts (10, 20) uses an electric heating element wire (30) which is seated in a channel (21) of the bottom casing (20). The casing cover (10) has a rim (11) which presses the wire (30) into the channel (21) when the parts are assembled. Electric current is applied to the element wire (30) using electrodes (not shown) which are inserted through apertures to heat the wire and fuse the plastic parts together at the joint after which the electrodes are withdrawn. The fusion strength is enhanced and the bond made more reliable if the diameter of heating element (30) is defined as (D), and:-

(a) the distance L between the opposed walls of the channel is defined by 1.3D≤L≤1.6D;
(b) the wall thickness T of the rim is defined by 1.1 D≤T≤1.2D;
(c) the height A of outside wall of the channel is defined by A≥2D;
(d) the height B of inside wall of the channel is defined by B≥2D;
(e) the height H of the rim is defined by H≥A.
摘要翻译：接合两个热塑性部件（10,20）的方法使用位于底部壳体（20）的通道（21）中的电加热元件线（30）。壳体盖（10）具有当部件组装时将线（30）压入通道（21）的边缘（11）。使用插入通孔的电极（未示出）将电流施加到元件线（30）上，以加热电线，并将接合处的塑料部分熔合在一起，然后电极被拉出。如果加热元件（30）的直径定义为（D），则融合强度得到提高，并且粘结更可靠，并且：（a）通道相对壁之间的距离L由1.3D≤L ≤1.6D; （b）边缘的壁厚T由1.1D≤T≤1.2D定义; （c）通道外壁的高度A由A≥2D定义; （d）通道内壁的高度B由B≥2D定义; （e）轮辋的高度H由H≥A定义。

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