JPS623706Y2 - - Google Patents
Info
- Publication number
- JPS623706Y2 JPS623706Y2 JP4583881U JP4583881U JPS623706Y2 JP S623706 Y2 JPS623706 Y2 JP S623706Y2 JP 4583881 U JP4583881 U JP 4583881U JP 4583881 U JP4583881 U JP 4583881U JP S623706 Y2 JPS623706 Y2 JP S623706Y2
- Authority
- JP
- Japan
- Prior art keywords
- thermistor
- base
- tightening
- holding
- tightening portion
- 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
- 239000002184 metal Substances 0.000 claims description 11
- 239000004033 plastic Substances 0.000 claims description 5
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 230000001681 protective effect Effects 0.000 description 2
- 239000004695 Polyether sulfone Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000003651 drinking water Substances 0.000 description 1
- 235000020188 drinking water Nutrition 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000003365 glass fiber Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229920002492 poly(sulfone) Polymers 0.000 description 1
- 229920006393 polyether sulfone Polymers 0.000 description 1
- 239000012779 reinforcing material Substances 0.000 description 1
- 238000005476 soldering Methods 0.000 description 1
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】
この考案は、給湯器の湯温検出などの目的で使
用されるサーミスタセンサに関するものである。[Detailed Description of the Invention] This invention relates to a thermistor sensor used for purposes such as detecting the temperature of hot water in a water heater.
給湯器などに使用されている従来のサーミスタ
センサは、外部接続用のリード線または端子を設
けた取付部にサーミスタを取付け、このサーミス
タを覆う金属の保護管を固定した構造を有してい
る。しかしながら金属の保護管は、雰囲気あるい
は液体と接触した状態におかれるので、使用中に
腐食するおそれがあり、また内部のサーミスタと
の間の充填材の存在のためにレスポンスが悪い。 Conventional thermistor sensors used in water heaters and the like have a structure in which the thermistor is attached to a mounting part provided with lead wires or terminals for external connection, and a metal protection tube is fixed to cover the thermistor. However, since the metal protective tube is placed in contact with the atmosphere or liquid, there is a risk of corrosion during use, and the response is poor due to the presence of a filler between it and the internal thermistor.
この考案は、金属の保護管を有するものに比べ
てレスポンスが速く、しかも給湯器缶体等への着
脱に際して損傷を受け難いように改良したサーミ
スタセンサを提供することを目的としている。 The purpose of this invention is to provide an improved thermistor sensor that has a faster response than a sensor with a metal protective tube and is less likely to be damaged when attached to or removed from a water heater can.
つぎにこの考案の一実施例について図面を参照
して説明する。第１図から第３図において符号１
は基部、２は保持部をそれぞれ示している。基部
１は、テーパー状のねじ部１ａと、角柱状、この
例では六角柱状の締付部１ｂとからなり、締付部
１ｂには金属管３が嵌着されている。また保持部
２は、基部１の先端から突出する板状をなし、そ
の先端部には、ガラス封入形のサーミスタ４が埋
設されている。そしてサーミスタ４の一対の引出
線５は、基部１に埋設された一対のリード線また
は端子６の先端にそれぞれ半田づけなどの手段で
接続されている。なお保持部２に形成された透孔
２ａは、サーミスタ４の周囲において被測温流体
との接触面積を大きくするために設けられてい
る。 Next, an embodiment of this invention will be described with reference to the drawings. Reference numeral 1 in Figures 1 to 3
2 indicates a base portion, and 2 indicates a holding portion, respectively. The base 1 includes a tapered threaded portion 1a and a prismatic, in this example hexagonal prismatic, tightening portion 1b, and a metal tube 3 is fitted into the tightening portion 1b. The holding part 2 has a plate shape that protrudes from the tip of the base 1, and a glass-encapsulated thermistor 4 is embedded in the tip. The pair of lead wires 5 of the thermistor 4 are respectively connected to the tips of a pair of lead wires or terminals 6 buried in the base 1 by means such as soldering. Note that the through hole 2a formed in the holding portion 2 is provided in order to increase the contact area with the temperature-measuring fluid around the thermistor 4.
ここで重要なことは、基部１および保持部２が
プラスチツクの一体成形によつて形成され、そし
て締付部１ｂに取付けられた金属管３の最大径
は、ねじ部１ａの最大径よりも小さいということ
である。プラスチツクとしては、耐熱性および耐
水性が良好であり、そして飲用水との接触を考慮
して衛生上問題のないものであればよく、たとえ
ばポリエーテルサルホン，ポリサルホン等が適し
ている。さらにプラスチツクにガラス繊維等の補
強材を混入したものは、高い強度を有するために
さらに好適である。 What is important here is that the base 1 and the holding part 2 are formed by integral molding of plastic, and the maximum diameter of the metal tube 3 attached to the tightening part 1b is smaller than the maximum diameter of the threaded part 1a. That's what it means. The plastic may be any material as long as it has good heat resistance and water resistance, and does not pose a sanitary problem in view of contact with drinking water. For example, polyether sulfone, polysulfone, etc. are suitable. Furthermore, plastic mixed with a reinforcing material such as glass fiber is more suitable because it has high strength.
このように構成されたサーミスタセンサにおい
て、サーミスタ４は、金属保護管に覆われるので
はなく、基体１と一体的な保持部２に埋設されて
いるために、金属保護管を用いた場合に生じる前
記のような欠点はなく、またレスポンスも著るし
く速い。しかも締付部１ｂに取付けた金属管３は
ねじ部１ａに比べて小径であるので、このサーミ
スタセンサをたとえば給湯器缶体に設けた取付孔
にねじ込む際に、使用する工具を小形のものと
し、過大なトルクが作用するのを防止している。
このためプラスチツクのために強度がやや劣るね
じ部が破損するおそれが少なくなる。なお締付部
１ｂに取付けて金属管３は省略することも可能で
ある。 In the thermistor sensor configured in this way, the thermistor 4 is not covered by the metal protection tube but is embedded in the holding part 2 that is integral with the base 1, so that the thermistor 4 is not covered with the metal protection tube, but is embedded in the holding part 2 that is integral with the base 1, so that the It doesn't have any of the drawbacks mentioned above, and the response is extremely fast. Moreover, since the metal tube 3 attached to the tightening part 1b has a smaller diameter than the threaded part 1a, the tool used is small when screwing this thermistor sensor into a mounting hole provided in a water heater can, for example. , prevents excessive torque from being applied.
This reduces the possibility that the threaded portion, which is made of plastic and whose strength is somewhat inferior, will be damaged. Note that it is also possible to omit the metal tube 3 by attaching it to the tightening portion 1b.
第１図はこの考案の一実施例によるサーミスタ
センサの一部切欠側面図、第２図はその上面図、
第３図は下面図である。
１……基部、１ａ……ねじ部、１ｂ……締付
部、２……保持部、２ａ……透孔、３……金属
管、４……サーミスタ、５……引出線、６……端
子。
FIG. 1 is a partially cutaway side view of a thermistor sensor according to an embodiment of this invention, and FIG. 2 is a top view thereof.
FIG. 3 is a bottom view. DESCRIPTION OF SYMBOLS 1...Base, 1a...Threaded part, 1b...Tightening part, 2...Holding part, 2a...Through hole, 3...Metal tube, 4...Thermistor, 5...Leader wire, 6... terminal.
Claims (1)
部と、この基部に支持されたリード線または端
子に接続されたサーミスタと、このサーミスタ
を所定の位置に保持する保持部とを備え、上記
基部および締付部はプラスチツクの一体成形に
よつて構成され、かつ上記締付部は上記ねじ部
よりも小さい直径を有しているサーミスタセン
サ。 (2) 上記締付部を囲むように金属管が取付けられ
ている実用新案発録請求の範囲第１項記載のサ
ーミスタセンサ。[Claims for Utility Model Registration] (1) A base having a mounting screw portion and a prismatic tightening portion, a thermistor connected to a lead wire or terminal supported by the base, and the thermistor in a predetermined position. a holding portion for holding the thermistor sensor, the base portion and the tightening portion are integrally formed of plastic, and the tightening portion has a smaller diameter than the threaded portion. (2) The thermistor sensor according to claim 1, wherein a metal tube is attached to surround the tightening portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4583881U JPS623706Y2 (en) | 1981-03-31 | 1981-03-31 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4583881U JPS623706Y2 (en) | 1981-03-31 | 1981-03-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS57159130U JPS57159130U (en) | 1982-10-06 |
| JPS623706Y2 true JPS623706Y2 (en) | 1987-01-28 |
Family
ID=29842713
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4583881U Expired JPS623706Y2 (en) | 1981-03-31 | 1981-03-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS623706Y2 (en) |
-
1981
- 1981-03-31 JP JP4583881U patent/JPS623706Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS57159130U (en) | 1982-10-06 |
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