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    Glow plug and method of manufacturing the same
    6.
    发明公开
    Glow plug and method of manufacturing the same 审中-公开
    电热塞及其制造方法

    公开(公告)号：EP2434220A3

    公开(公告)日：2017-12-13

    申请号：EP11180801.0

    申请日：2011-09-09

    申请人： NGK SPARK PLUG CO., LTD.

    发明人： Suzuki, Hiroyuki ,  Murakoshi, Shinya

    IPC分类号： F23Q7/00

    CPC分类号： F23Q7/001 ,  F23Q2007/004 ,  Y10T29/49083

    摘要： Objective: A configuration in which fixing is performed by inserting a rear end of a lead shaft member into an attachment hole of an external terminal at the rear of a glow plug and crimping an outer peripheral face of the external terminal. Damage such as plating breaks or peeling is not produced in a plating layer formed on a surface of the external terminal, and the life of a die used in the crimping step is increased.
    Means for Solution: The outer peripheral face of a crimp formation region 78 of the external terminal 70 having a polygonal cross section is formed into a crimped portion 79 provided by round crimping toward a circle, and the external terminal 70 is fixed to the rear end 55 of the lead shaft member 50. Due to the configuration obtained from the round crimping of the polygon, plating breaks and the like are not easily produced in the plating layer on the surface of the external terminal 70. Since square crimping of a circle is not performed, the die for crimping can be prevented from wearing only at particular positions to increase the life thereof.

    摘要翻译： 目标：通过将引导轴构件的后端插入电热塞后部的外部端子的安装孔中并且压接外部端子的外周面来执行固定的构造。 在外部端子的表面上形成的镀层中不会产生诸如电镀断裂或剥落的损坏，并且在压接步骤中使用的模具的寿命增加。 用于解决问题的手段：具有多边形横截面的外部端子70的压接形成区域78的外周面被形成为通过朝向圆形的圆形压接提供的压接部分79，并且外部端子70被固定到后端 由于通过多边形的圆形压接获得的构造，在外部端子70的表面上的镀层中不容易产生电镀断裂等。由于圆的正方形卷曲是 没有执行，用于卷曲的模具可以仅在特定位置被防止磨损以增加其寿命。