JPS61146851U - - Google Patents

Description

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

第１図は本考案の一実施例である管球用口金の
断面図、第２図は同要部拡大断面図、第３図は同
口金本体の拡大断面図、第４図は本考案の他の実
施例である管球用口金の断面図、第５図は同口金
本体の拡大断面図である。 １，２……口金本体、３……口金ピン、４……
案内孔、５……口金ピン挿通孔、６……突起。 Fig. 1 is a sectional view of a tube cap, which is an embodiment of the present invention, Fig. 2 is an enlarged sectional view of the same main part, Fig. 3 is an enlarged sectional view of the main body of the cap, and Fig. 4 is an enlarged sectional view of the main part of the same. A sectional view of a tube cap according to another embodiment, and FIG. 5 is an enlarged sectional view of the main body of the cap. 1, 2...Base body, 3...Base pin, 4...
Guide hole, 5...cap pin insertion hole, 6...protrusion.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] プラスチツク製の口金本体に導入線を挿通すべ
き口金ピンを固定した管球用口金であつて、前記
導入線を前記口金ピン内へ案内するテーパ状の案
内孔と、前記案内孔の小径部に連なり前記口金ピ
ンの一端部が挿通されかつ前記口金ピンの外周面
との間に隙間が生じる大きさの直径を有する口金
ピン挿通孔とを前記口金本体に設け、前記小径部
を前記口金ピン挿通孔より径小となして、前記小
径部を前記口金ピン挿通孔の入口付近にこの入口
の一部を塞ぐごとく突出させ、前記口金ピン挿通
孔の周面に周方向に連続的または不連続的に前記
口金ピンの外周面に接する高さの突起を形成し、
前記口金ピンの一端部の先端領域を前記突出部と
前記突起との間に位置させ、前記先端領域をテー
パ状に押し広げて、前記口金ピンの先端領域のテ
ーパ状内面を前記案内孔のテーパ面に滑らかに連
接させてなる管球用口金。 This tube cap has a cap pin through which a lead-in wire is inserted into a plastic cap body, and a tapered guide hole for guiding the lead-in wire into the cap pin, and a small diameter portion of the guide hole. The cap body is provided with a cap pin insertion hole having a diameter large enough to allow one end of the cap pin to be inserted therethrough and to create a gap between the cap pin and the outer circumferential surface of the cap pin, and the small diameter portion is inserted through the cap pin insertion hole. The small diameter portion is made to have a smaller diameter than the hole, and protrudes near the entrance of the cap pin insertion hole so as to partially block this entrance, and is continuous or discontinuous in the circumferential direction on the circumferential surface of the cap pin insertion hole. forming a protrusion with a height that contacts the outer circumferential surface of the base pin;
The tip region of one end of the cap pin is located between the protrusion and the protrusion, and the tip region is expanded into a tapered shape, so that the tapered inner surface of the tip region of the cap pin is aligned with the taper of the guide hole. A tube cap that is smoothly connected to the surface.