JPS6465792A - Manufacture of heat generating tube - Google Patents
Manufacture of heat generating tubeInfo
- Publication number
- JPS6465792A JPS6465792A JP22275787A JP22275787A JPS6465792A JP S6465792 A JPS6465792 A JP S6465792A JP 22275787 A JP22275787 A JP 22275787A JP 22275787 A JP22275787 A JP 22275787A JP S6465792 A JPS6465792 A JP S6465792A
- Authority
- JP
- Japan
- Prior art keywords
- coil
- tube
- ball
- extended portion
- heat generating
- 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
Landscapes
- Resistance Heating (AREA)
- Butt Welding And Welding Of Specific Article (AREA)
Abstract
PURPOSE:To manufacture a heat generating tube by making an extended portion of a coil formed by extending the front end of the coil project out of a front end hole of a tube, melting said front end to form a ball, making the molten ball to be contained in a front end bottom wall of the molten tube, and securely joining the front end of the coil and the bottom wall of the tube together. CONSTITUTION:The front end portion 32 of a heat generating coil 3 is tapered with the winding diameter thereof gradually decreasing and with the further front end thereof forming a straight line-shaped extended portion. The coil 3 is connected to a front end 21 of a center electrode 2 either by winding or welding the rear end 31 of the coil 3 to the front end 21. The center electrode 2 of the coil 3 is inserted from the rear end opening of the tube 1 to make the extended portion 33 of the coil 3 project out of a front end hole 12 of the tube 1. When the front end portion of the tube 1 is heated with a torch of gas shield welding, the extended portion 33 of the coil is melted and forms a ball 35 due to surface tension. Then the edge portion of the front end hole 12 melts and becomes a front end bottom wall 14. Here, the ball 35 is embedded in the wall 14 and as a result, poor connection between the coil end 32 and the tube 1 is completely eliminated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22275787A JPS6465792A (en) | 1987-09-04 | 1987-09-04 | Manufacture of heat generating tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP22275787A JPS6465792A (en) | 1987-09-04 | 1987-09-04 | Manufacture of heat generating tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6465792A true JPS6465792A (en) | 1989-03-13 |
Family
ID=16787432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP22275787A Pending JPS6465792A (en) | 1987-09-04 | 1987-09-04 | Manufacture of heat generating tube |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6465792A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012057820A (en) * | 2010-09-06 | 2012-03-22 | Ngk Spark Plug Co Ltd | Glow plug and method for manufacturing the same |
| JP2014137170A (en) * | 2013-01-16 | 2014-07-28 | Ngk Spark Plug Co Ltd | Method of manufacturing glow plug, and glow plug |
| JP2015014393A (en) * | 2013-07-03 | 2015-01-22 | 日本特殊陶業株式会社 | Manufacturing method of glow plug |
-
1987
- 1987-09-04 JP JP22275787A patent/JPS6465792A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012057820A (en) * | 2010-09-06 | 2012-03-22 | Ngk Spark Plug Co Ltd | Glow plug and method for manufacturing the same |
| JP2014137170A (en) * | 2013-01-16 | 2014-07-28 | Ngk Spark Plug Co Ltd | Method of manufacturing glow plug, and glow plug |
| JP2015014393A (en) * | 2013-07-03 | 2015-01-22 | 日本特殊陶業株式会社 | Manufacturing method of glow plug |
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