JPS5980989U

JPS5980989U - Sea heater

Info

Publication number: JPS5980989U
Application number: JP17740482U
Authority: JP
Inventors: 浩一日比野; 市村　伸男
Original assignee: 三菱電機株式会社
Priority date: 1982-11-24
Filing date: 1982-11-24
Publication date: 1984-05-31

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

□　第１図は従来のシーズヒータの完成後の要部断面図
、第２図〜第４図は本考案のシーズヒータを示すもので
、第２図は途中工程を示す要部断面図、第３図は完成後
の要部断面図、第４図は他の実施例を示す要部断面図で
ある。図中、１は金属パイプ、２は発熱コイル、３は取り出し
端子、４は耐熱絶縁物、５は封口材。□ Figure 1 is a sectional view of the main part of a conventional sheathed heater after completion, Figures 2 to 4 show the sheathed heater of the present invention, and Figure 2 is a sectional view of the main part showing an intermediate process. 3 is a sectional view of the main part after completion, and FIG. 4 is a sectional view of the main part showing another embodiment. In the figure, 1 is a metal pipe, 2 is a heating coil, 3 is an extraction terminal, 4 is a heat-resistant insulator, and 5 is a sealing material.

Claims

[Scope of utility model registration request]

In a sheathed heater, a heating coil with a lead-out terminal connected is inserted into a metal pipe, a heat-resistant insulator such as magnesia powder is filled, and the opening at the end of the metal pipe is sealed with a sealing material. 1. A sheathed heater characterized in that the surface of a heat-resistant insulator at the boundary between the two is sealed by forming a convex or concave surface.