JPH0736264Y2 - Water thermometer unit - Google Patents
Water thermometer unitInfo
- Publication number
- JPH0736264Y2 JPH0736264Y2 JP14142389U JP14142389U JPH0736264Y2 JP H0736264 Y2 JPH0736264 Y2 JP H0736264Y2 JP 14142389 U JP14142389 U JP 14142389U JP 14142389 U JP14142389 U JP 14142389U JP H0736264 Y2 JPH0736264 Y2 JP H0736264Y2
- Authority
- JP
- Japan
- Prior art keywords
- metal case
- external terminal
- water thermometer
- thermometer unit
- insulating
- 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 - Lifetime
Links
Landscapes
- Measuring Temperature Or Quantity Of Heat (AREA)
Description
【考案の詳細な説明】 産業上の利用分野 本考案は、自動車の冷却水等の液温を検出する水温計ユ
ニットに関するものである。DETAILED DESCRIPTION OF THE INVENTION Industrial Field of the Invention The present invention relates to a water thermometer unit for detecting a liquid temperature of cooling water of an automobile.
従来の技術 従来、この種の水温計ユニットは第２図に示すように上
部に開口を有する中空の金属ケース５内に絶縁筒４を挿
入すると共に、サーミスタ素子８と接触板７を収容し、
次いでコイルスプリング６と周囲にモールド体２を有す
る外部端子１を収容して上記金属ケース５の開口上部の
周囲端を絞って上記金属ケース５に上記外部端子１を取
着することにより、上記接触片7,コイルスプリング６を
介して上記サーミスタ素子８を上記外部端子１に導通さ
せるようにしていた。この場合、モールド体２に組み込
まれた外部端子１と金属ケース４との間に絶縁ワッシャ
３をはさみ込み、絞り加工により加圧固定することによ
り外部端子と金属ケース５との絶縁性を確保していた。2. Description of the Related Art Conventionally, in this type of water thermometer unit, as shown in FIG. 2, an insulating cylinder 4 is inserted into a hollow metal case 5 having an opening at the top, and a thermistor element 8 and a contact plate 7 are housed.
Next, the coil spring 6 and the external terminal 1 having the molded body 2 on the periphery are housed, the peripheral end of the upper opening of the metal case 5 is narrowed, and the external terminal 1 is attached to the metal case 5 to make the contact. The thermistor element 8 is electrically connected to the external terminal 1 through the piece 7 and the coil spring 6. In this case, the insulating washer 3 is sandwiched between the external terminal 1 and the metal case 4 incorporated in the molded body 2 and pressed and fixed by drawing to secure the insulation between the external terminal and the metal case 5. Was there.
考案が解決しようとする課題 しかしながら、自動車に用いられる電装品としての水温
計ユニットはその性格上、様々な条件下で使用されなが
らも誤動作は許されず、特に海水，不凍液等の導電性の
液体が浸入したときの絶縁性は、水温計ユニットの特性
に直接影響を与えるため、より絶縁性の高いものが要求
されている。However, due to the nature of the water thermometer unit as an electrical component used in automobiles, malfunctions are not allowed even when used under various conditions, especially when conductive liquids such as seawater and antifreeze are used. Insulation when infiltrated directly affects the characteristics of the water temperature gauge unit, and therefore higher insulation is required.
本考案は、このような水温計ユニットの絶縁性をより高
め、信頼性の向上を図ることを目的とする。It is an object of the present invention to further improve the insulation of such a water temperature gauge unit and improve its reliability.
課題を解決するための手段 この問題を解決するために本考案の水温計ユニットは、
絶縁ワッシャと接するモールド体の一面にリング状の突
起を設けたことを特徴とするものである。Means for Solving the Problem In order to solve this problem, the water thermometer unit of the present invention is
It is characterized in that a ring-shaped protrusion is provided on one surface of the mold body that is in contact with the insulating washer.
作用 この構成により、モールド体と絶縁ワッシャとの接触面
積が大きくなり、同時に突起部分にて加圧力が大きくな
り液体の浸入をより確実に防ぐことができる。Function With this configuration, the contact area between the mold body and the insulating washer is increased, and at the same time, the pressing force is increased at the protruding portion, so that the infiltration of the liquid can be more reliably prevented.
実施例 第１図は本考案の一実施例による水温計ユニットの防水
部の断面図であり、モールド体２は絶縁ワッシャ３との
接触面にリング状の突起2aを有している。Embodiment FIG. 1 is a cross-sectional view of a waterproof part of a water thermometer unit according to an embodiment of the present invention, in which a mold body 2 has a ring-shaped protrusion 2a on a contact surface with an insulating washer 3.
なお、第１図に示す本実施例の機能および構造は、基本
的には第２図に示した従来のものと同じ構成であるの
で、同一構成部分には同一番号を付し、詳細な説明を省
略する。Since the function and structure of this embodiment shown in FIG. 1 are basically the same as those of the conventional one shown in FIG. 2, the same components are designated by the same reference numerals, and detailed description will be given. Is omitted.
本実施例において、金属ケース５に収納したサーミスタ
素子８は接触板7,コイルスプリング６を介して外部端子
１に電気的に接続しており、上記サーミスタ素子８の抵
抗値を外部端子１と金属ケース５にて検出できるように
なっている。このとき、コイルスプリング６および接触
板７は絶縁筒４にて金属ケース５との絶縁を保ってお
り、また、絶縁ワッシャ３は外部端子１とモールド体２
によって圧縮することにより、外部との気密を保ち、外
部端子１と金属ケース５との絶縁を確保している。In the present embodiment, the thermistor element 8 housed in the metal case 5 is electrically connected to the external terminal 1 via the contact plate 7 and the coil spring 6, and the resistance value of the thermistor element 8 is the same as that of the external terminal 1 and the metal. It can be detected in Case 5. At this time, the coil spring 6 and the contact plate 7 are kept insulated from the metal case 5 by the insulating cylinder 4, and the insulating washer 3 is connected to the external terminal 1 and the molded body 2.
By compressing with, the airtightness with the outside is maintained and the insulation between the external terminal 1 and the metal case 5 is secured.
考案の効果 以上のように本考案によれば、モールド体の絶縁ワッシ
ャとの接触面にリング状の突起を設けたので、モールド
体と絶縁ワッシャとの加圧接触がより確実になる。この
ことから、外部との気密性，絶縁性が高まり、信頼性の
高い水温計ユニットを得ることができる。As described above, according to the present invention, since the ring-shaped protrusion is provided on the contact surface of the mold body with the insulating washer, the pressure contact between the mold body and the insulating washer becomes more reliable. From this, the airtightness and insulation with the outside are enhanced, and a highly reliable water thermometer unit can be obtained.
第１図は本考案の一実施例による水温計ユニットの防水
部の断面図、第２図は従来の水温計ユニットを示す半断
面図である。 １……外部端子、２……モールド体、2a……突起、３…
…絶縁ワッシャ、４……絶縁筒、５……金属ケース、６
……コイルスプリング、７……接触板、８……サーミス
タ素子。FIG. 1 is a sectional view of a waterproof part of a water temperature gauge unit according to an embodiment of the present invention, and FIG. 2 is a half sectional view showing a conventional water temperature gauge unit. 1 ... External terminal, 2 ... Molded body, 2a ... Protrusion, 3 ...
Insulating washers, 4 ... Insulating cylinder, 5 ... Metal case, 6
...... Coil spring, 7 ...... Contact plate, 8 ...... Thermistor element.
フロントページの続き (56)参考文献 実開 昭57−88041（ＪＰ，Ｕ) 実開 昭63−139597（ＪＰ，Ｕ) 実開 昭59−157533（ＪＰ，Ｕ)Continuation of the front page (56) Bibliography Shou 57-88041 (JP, U) Seki 63-139597 (JP, U) Seki 59-157533 (JP, U)
Claims (1)
中空の金属ケース内にサーミスタ素子と上記サーミスタ
素子を上方より押圧するコイルスプリングとを収容し、
上記金属ケースの上部開口を絶縁材料で成形されたモー
ルド体に組み込まれた外部端子にて封止すると共に上記
外部端子と上記金属ケースの間を絶縁ワッシャにて絶縁
し、かつ上記モールド体の絶縁ワッシャとの接触面にリ
ング状の突起を形成したことを特徴とする水温計ユニッ
ト。1. A thermistor element and a coil spring for pressing the thermistor element from above are housed in a hollow metal case having an opening in the upper part and an insulating cylinder disposed inside.
The upper opening of the metal case is sealed with an external terminal incorporated in a molded body formed of an insulating material, and the external terminal and the metal case are insulated with an insulating washer and the molded body is insulated. A water thermometer unit characterized in that a ring-shaped projection is formed on the contact surface with the washer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14142389U JPH0736264Y2 (en) | 1989-12-06 | 1989-12-06 | Water thermometer unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14142389U JPH0736264Y2 (en) | 1989-12-06 | 1989-12-06 | Water thermometer unit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0380339U JPH0380339U (en) | 1991-08-16 |
| JPH0736264Y2 true JPH0736264Y2 (en) | 1995-08-16 |
Family
ID=31688321
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14142389U Expired - Lifetime JPH0736264Y2 (en) | 1989-12-06 | 1989-12-06 | Water thermometer unit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0736264Y2 (en) |
-
1989
- 1989-12-06 JP JP14142389U patent/JPH0736264Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0380339U (en) | 1991-08-16 |
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