JPS586893B2 - Manufacturing method of resistance temperature detector - Google Patents
Manufacturing method of resistance temperature detectorInfo
- Publication number
- JPS586893B2 JPS586893B2 JP191677A JP191677A JPS586893B2 JP S586893 B2 JPS586893 B2 JP S586893B2 JP 191677 A JP191677 A JP 191677A JP 191677 A JP191677 A JP 191677A JP S586893 B2 JPS586893 B2 JP S586893B2
- Authority
- JP
- Japan
- Prior art keywords
- tube
- metal
- outer tube
- resistance element
- inner tube
- 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.)
- Expired
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 229910052751 metal Inorganic materials 0.000 claims description 44
- 239000002184 metal Substances 0.000 claims description 44
- 239000000843 powder Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 11
- 239000004020 conductor Substances 0.000 claims description 5
- 238000009413 insulation Methods 0.000 claims description 4
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims 1
- 238000000465 moulding Methods 0.000 claims 1
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 4
- 238000005336 cracking Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 238000005304 joining Methods 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 description 2
- 229910052786 argon Inorganic materials 0.000 description 2
- 230000007797 corrosion Effects 0.000 description 2
- 238000005260 corrosion Methods 0.000 description 2
- 229910052709 silver Inorganic materials 0.000 description 2
- 239000004332 silver Substances 0.000 description 2
- 238000005476 soldering Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【発明の詳細な説明】
本発明は温度を電気抵抗により測定する測温抵抗体の製
作造法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method of manufacturing a resistance temperature detector for measuring temperature by electrical resistance.
従来の測温抵抗体の製造方法について第１図に基づいて
説明すると、この測温抵抗体１は金属外管４に無機絶縁
粉末３を介して２本の導線２，２′を内装せしめ、導線
２，２′に抵抗素子６の抵抗線９を接続させ、この抵抗
素子６に先端金属外管１０をかぶせて接合し、この先端
金属外管１０内に無機絶縁粉末３′を充填せしめ、そし
て金属外管４と先端金属外管１０同志は、金属外管４の
先端縁１′と先端金属外管１０の基端縁１０′とを接合
固定するのであるが、この際、両者１’，１０’の段部
１ １ ， １ １’ を形成して嵌合せしめた後、銀
鑞熔接、アルゴン熔接等の手段にて固着するかまたは金
属外管４の先端縁１′と先端金属外管１０の基端縁１０
′に段部１１，１１’を設けることなく両者の端縁を銀
鑞熔接、アルゴン熔接等の手段によりつき合わせて溶着
するのが通常であるその為に従来の測温抵抗体の製造方
法の場合、導線２，２′を内装せしめる金属外管４と、
抵抗素子６を内蔵した金属外管１０とがそれぞれ極細管
（例えば直径１ｍ ／ｍ乃至１．６ｍ／ｍ）であれば、
両者の嵌合、熔接等の手段による両者の接合および段部
の加工形成の如きは非常に困難を極めしかも極細管の場
合、常に強固に接合できない欠点があり、さらに両者の
接合個所において機械的強度が低下して使用中に応力割
れや粒界腐蝕割れを生じたり、熔接個所から折損し易く
、所望個所に使用できない等の難点があり、接合手段に
余計な手間と熟練技術を要してコスト高ともなり、不良
率も多い等の欠点がある。A conventional method for manufacturing a resistance temperature detector will be explained based on FIG. 1. This resistance temperature detector 1 has two conductive wires 2, 2' inside a metal outer tube 4 via an inorganic insulating powder 3. The resistance wire 9 of the resistance element 6 is connected to the conductor wires 2 and 2', the metal outer tube 10 at the tip is covered and bonded to the resistance element 6, and the metal outer tube 10 at the tip is filled with inorganic insulating powder 3'. Then, the metal outer tube 4 and the distal metal outer tube 10 are joined and fixed by joining and fixing the distal edge 1' of the metal outer tube 4 and the proximal edge 10' of the distal metal outer tube 10. , 10' are formed and fitted together, and then they are fixed by silver soldering, argon welding, etc., or the tip edge 1' of the metal outer tube 4 and the tip metal outer tube 4 are bonded together. Proximal edge 10 of tube 10
It is common practice to weld the edges of both sides together by means of silver soldering, argon welding, etc., without providing step portions 11, 11'. In this case, a metal outer tube 4 in which the conducting wires 2, 2' are housed;
If the metal outer tube 10 containing the resistance element 6 is an ultra-thin tube (for example, diameter 1 m/m to 1.6 m/m),
It is extremely difficult to fit the two together, to join them together by means such as welding, and to process and form stepped parts.Moreover, in the case of ultra-thin tubes, there is a drawback that it is not always possible to firmly join them, and furthermore, it is difficult to mechanically connect the two at the joining point. There are disadvantages such as reduced strength and stress cracking or intergranular corrosion cracking during use, and easy breakage at the welded point, making it impossible to use it in the desired location, and the joining method requires extra effort and skill. There are disadvantages such as high cost and high defect rate.
本発明は、このような製造方法の欠点を解消した測温抵
抗体製造方法を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a method for manufacturing a resistance temperature detector that eliminates the drawbacks of such a manufacturing method.
以下、本発明の一実施例を第２図および第３図により説
明する。An embodiment of the present invention will be described below with reference to FIGS. 2 and 3.
２１は無機絶縁物を使用材質とし、円筒状に成型乾燥さ
れ導線２２．２２’の挿入される貫通孔２３．２３’を
設けた絶縁管であり、２４は絶縁管２１が挿填される金
属内管、２５は金属内管が挿嵌される一端が閉蓋された
金属外管であり、絶縁管２１に設けられた貫通孔２３，
２３’にニッケル材で形成された導線２２，２２′を挿
入し、絶縁管２１を別に用意した金属内管２４内に挿填
せしめ、さらに金属内管２４をスエジングマシン等の減
径機を使用して所要外径に減径加工する。21 is an insulating tube made of an inorganic insulator, molded and dried into a cylindrical shape, and provided with through holes 23 and 23' into which conductive wires 22 and 22' are inserted, and 24 is a metal tube into which the insulating tube 21 is inserted. The inner tube 25 is a metal outer tube with one end closed into which the metal inner tube is inserted, and the through hole 23 provided in the insulating tube 21,
The conductive wires 22, 22' made of nickel material are inserted into 23', the insulating tube 21 is inserted into the metal inner tube 24 prepared separately, and the metal inner tube 24 is further removed using a diameter reducing machine such as a swaging machine. Use it to reduce the outer diameter to the required size.
このような減径加工によって金属内管２４内に挿填され
た絶縁管２１は破砕されて無機絶縁粉末２６を形成し、
導線２２．２２’は無機絶縁粉末２６を介して金属内管
２４内に内装される。Through such diameter reduction processing, the insulating tube 21 inserted into the metal inner tube 24 is crushed to form inorganic insulating powder 26,
The conductive wires 22, 22' are placed inside the metal inner tube 24 via an inorganic insulating powder 26.
次に前記の如く減径加工によって伸延された金属内管２
４を所要長さに切断し、その端部を一部切除して第３図
に示すように導線２２，２２′を切除長だけ露呈せしめ
、さらに導線２２，２２′に対して抵抗素子２７のリー
ド線２８を銀鑞熔接等の固着手段により接続固定する。Next, the metal inner tube 2 is elongated by diameter reduction processing as described above.
4 to a required length, and a portion of the end thereof is removed to expose the conductive wires 22, 22' by the cut length as shown in FIG. The lead wire 28 is connected and fixed by a fixing means such as silver solder welding.
このようにした後、別途用意した抵抗素子２７を接続し
たる金属内管２４の外径より稍々内径が大で、また金属
管長に抵抗素子２７の長を加えた長さと同長にして一端
を閉蓋してなる金属外管２５内に少量の無機絶縁粉末２
９を収納し、次に抵抗素子２７を接続した金属内管２４
をその抵抗素子２７の先端部より金属外管２５の開口端
より挿入せしめ、さらにこの金属外管２５を減径機を使
用して所要径に減径加工する。After doing this, one end is made so that the inner diameter is slightly larger than the outer diameter of the metal inner tube 24 to which the separately prepared resistance element 27 is connected, and the length is the same as the length of the metal tube plus the length of the resistance element 27. A small amount of inorganic insulating powder 2 is placed inside the metal outer tube 25 formed by closing the lid.
A metal inner tube 24 houses a resistance element 9 and then connects a resistance element 27.
is inserted into the open end of the metal outer tube 25 from the distal end of the resistance element 27, and the metal outer tube 25 is further reduced in diameter to a desired diameter using a diameter reducing machine.
このようにして金属内管２４と金属外管２５は密着を保
持して二重管構造を形成すると共に金属外管２５内に挿
入される抵抗素子２７も少量の無機絶縁粉末２９を介し
て金属外管２５内に内装されるのである。In this way, the metal inner tube 24 and the metal outer tube 25 maintain close contact to form a double tube structure, and the resistance element 27 inserted into the metal outer tube 25 is also made of metal through a small amount of inorganic insulating powder 29. It is housed inside the outer tube 25.
本発明は以上の実施例に基づき特許請求の範囲のように
構成したので、測温抵抗体の製作工程が簡易で経済性が
高く、二重管構造なるが故に耐久性にすぐれ、熔接個所
が金属外管先端の閉蓋部分のみで金属に対する組織変化
が少なく耐久性があり、使用中の応力割れ、粒界腐蝕割
れ等の事故を充分防止できて機械的強度の増大を促し、
製品の不良率を少なくして廉価に大量供給できる利点が
ある。Since the present invention is constructed as claimed in the claims based on the above-described embodiments, the manufacturing process of the resistance temperature sensor is simple and economical, and the double tube structure provides excellent durability, and there are no welded parts. Only the closed lid part at the tip of the metal outer tube has minimal structural changes to the metal and is durable, sufficiently preventing accidents such as stress cracking and intergranular corrosion cracking during use, and promoting increased mechanical strength.
This has the advantage of reducing the defective rate of products and allowing large quantities to be supplied at low prices.
また金属外管内に収納された抵抗素子は、無機絶縁粉末
を介して振動、衝撃に対して充分保護され、さらに測定
温度に対しても絶縁性を低下せしめることはなく応答は
迅速である。Further, the resistance element housed in the metal outer tube is sufficiently protected against vibrations and shocks through the inorganic insulating powder, and also responds quickly to the measured temperature without reducing its insulation properties.
さらに本発明による測温抵抗体の場合は二重管構造にし
て熔接個所を皆無にしたから断線、破損等の弊害がなく
、さらに本発明による抵抗体の場合、金属内管と金属外
管との夫々の外径が１ｍ／ｍ乃至１．６ｍ／ｍ程度の極
細管であっても容易に製造できる利点がある等、従来品
に期待することのできない諸効果を発揮するものである
。Furthermore, in the case of the resistance temperature detector according to the present invention, there is no problem such as disconnection or damage because the double tube structure is used and there are no welded parts. It exhibits various effects that cannot be expected from conventional products, such as the advantage that even ultra-thin tubes with an outer diameter of about 1 m/m to 1.6 m/m can be easily manufactured.
第１図は従来の測温抵抗体の一部を切欠した側面図、第
２図は本発明測温抵抗体の製造過程で使用する絶縁管と
、金属内管と、金属外管とを分離して示した斜視図、第
３図は本発明完成品の一部を切欠した側面図、第４図は
第３図のＡ−Ａ線断面図である。
図中、２１・・・・・・絶縁管、２２．２２’・・・・
・・導線、２３，２３’・・・・・・絶縁管にあけた導
線の挿入される貫通孔、２４・・・・・・金属内管、２
５・・・・・・金属外管、２６・・・・・・無機絶縁粉
末、２７・・・・・・抵抗素子、２８・・・・・・抵抗
素子のリード線、２９・・・・・・少量の無機絶縁粉末
。Figure 1 is a partially cutaway side view of a conventional resistance temperature detector, and Figure 2 shows the insulation tube, inner metal tube, and outer metal tube used in the manufacturing process of the resistance temperature detector of the present invention separated. FIG. 3 is a partially cutaway side view of the finished product of the present invention, and FIG. 4 is a sectional view taken along the line A--A in FIG. 3. In the figure, 21...Insulation tube, 22.22'...
...Conductor, 23, 23'...Through hole drilled in the insulated tube into which the conductor is inserted, 24...Metal inner tube, 2
5...Metal outer tube, 26...Inorganic insulating powder, 27...Resistance element, 28...Resistance element lead wire, 29... ...A small amount of inorganic insulating powder.
Claims (1)
入される貫通孔を設けた絶縁管を成型する工程と、この
成型された絶縁管の貫通孔に導線を挿入して配設する工
程と、この導線の挿入された絶縁管を金属内管に挿入し
て配設する工程と、この絶縁管の配設された金属内管を
減径して内部の絶縁管を破砕して無機絶縁粉末を形成す
る工程とこの金属内管の端部を切除して露呈された導線
に抵抗素子のリード線を接続する工程と、一端の閉鎖さ
れた金属外管の閉鎖端部の内側に少量の無機絶縁粉末を
充填する工程と、この金属外管に抵抗素子と金属内管を
挿入して配設する工程と、この抵抗素子と金属内管の配
設された金属外管を減径加工して密着二重構造とする工
程と、から成る測温抵抗体の製造方法。1. A step of molding an inorganic insulating material into a dried cylindrical insulating tube with a through hole in the center into which a conducting wire is inserted, and a step of inserting and arranging a conducting wire into the through hole of this molded insulating tube. , the process of inserting the insulating tube into which the conductor has been inserted into a metal inner tube, and reducing the diameter of the metal inner tube in which this insulating tube is installed and crushing the inner insulating tube to create inorganic insulation. A process of forming a powder, a process of cutting off the end of this metal inner tube and connecting a lead wire of a resistance element to the exposed conductor, and a process of forming a small amount of powder inside the closed end of the metal outer tube with one end closed. A process of filling inorganic insulating powder, a process of inserting and arranging a resistance element and a metal inner tube into this metal outer tube, and a process of reducing the diameter of the metal outer tube in which the resistance element and metal inner tube are installed. A method for manufacturing a resistance temperature sensor, comprising: forming a double structure in close contact with each other.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP191677A JPS586893B2 (en) | 1977-01-13 | 1977-01-13 | Manufacturing method of resistance temperature detector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP191677A JPS586893B2 (en) | 1977-01-13 | 1977-01-13 | Manufacturing method of resistance temperature detector |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP12186581A Division JPS5756728A (en) | 1981-08-05 | 1981-08-05 | Resistor for measuring temperature |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5387782A JPS5387782A (en) | 1978-08-02 |
| JPS586893B2 true JPS586893B2 (en) | 1983-02-07 |
Family
ID=11514899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP191677A Expired JPS586893B2 (en) | 1977-01-13 | 1977-01-13 | Manufacturing method of resistance temperature detector |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS586893B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015219102A (en) * | 2014-05-16 | 2015-12-07 | 山里産業株式会社 | Sheath type resistance temperature detector, holder block used therefor, and method of manufacturing sheath type resistance temperature detector |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57165727A (en) * | 1981-04-03 | 1982-10-12 | Hironori Nara | Manufacture of resistor body for measuring temperature |
| JPS60178328A (en) * | 1984-02-24 | 1985-09-12 | Chino Works Ltd | Temperature measuring resistor |
| JP2018091642A (en) * | 2016-11-30 | 2018-06-14 | 株式会社チノー | Sheath type resistance thermometer |
-
1977
- 1977-01-13 JP JP191677A patent/JPS586893B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015219102A (en) * | 2014-05-16 | 2015-12-07 | 山里産業株式会社 | Sheath type resistance temperature detector, holder block used therefor, and method of manufacturing sheath type resistance temperature detector |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5387782A (en) | 1978-08-02 |
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