JPS5826535B2 - wax thermosensor - Google Patents
wax thermosensorInfo
- Publication number
- JPS5826535B2 JPS5826535B2 JP53022129A JP2212978A JPS5826535B2 JP S5826535 B2 JPS5826535 B2 JP S5826535B2 JP 53022129 A JP53022129 A JP 53022129A JP 2212978 A JP2212978 A JP 2212978A JP S5826535 B2 JPS5826535 B2 JP S5826535B2
- Authority
- JP
- Japan
- Prior art keywords
- wax
- needle
- temperature
- metal container
- flexible film
- 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
Landscapes
- Temperature-Responsive Valves (AREA)
- Details Of Measuring And Other Instruments (AREA)
Description
【発明の詳細な説明】
本発明は自動車始動時の絞り弁開度を自動調節させる機
構等に用いられる所謂ワックス感温体の改良に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in a so-called wax temperature sensing element used in a mechanism for automatically adjusting the opening degree of a throttle valve when starting an automobile.
第１図は従来のワックス感温体の断面図である。FIG. 1 is a cross-sectional view of a conventional wax temperature sensor.
ワックス１は円筒形の金属容器２に収容されており、こ
の金属容器２の上面には中央部に袋状の突起部をもつゴ
ム製の可撓膜３が密着している。The wax 1 is contained in a cylindrical metal container 2, and a flexible membrane 3 made of rubber and having a bag-shaped protrusion in the center is in close contact with the upper surface of the metal container 2.
可撓膜３の中央部の袋には両端を丸めた不銹鋼製ニード
ル４が挿入され、Ｏリング７、ニードル支持板８を案内
としてニードル４は上下可動に構成されている。A stainless steel needle 4 with rounded ends is inserted into the bag at the center of the flexible membrane 3, and the needle 4 is configured to be movable up and down using an O-ring 7 and a needle support plate 8 as guides.
０１，１ング７、ニードル支持板８を取付げた押え金具
５は可撓板３の上面を押すと共に金属容器２に固定され
、その中心軸にはニードル４る通過させる孔があり、上
部外周にはワックス感温体を他の部材に取付けるための
雄ねじ６が設けられている。The presser metal fitting 5 to which the 01,1 ring 7 and the needle support plate 8 are attached presses the top surface of the flexible plate 3 and is fixed to the metal container 2, and its central axis has a hole through which the needle 4 passes, and the upper outer periphery has a hole through which the needle 4 passes. is provided with a male screw 6 for attaching the wax temperature sensing element to another member.
ワックス１は複数種の高級パラフィン系炭化水素に金属
粉等を混合して温度上昇時に所定の体積膨張が得られる
ようにした流動性物質である。The wax 1 is a fluid substance made by mixing metal powder and the like with a plurality of types of higher paraffinic hydrocarbons so that a predetermined volumetric expansion can be obtained when the temperature rises.
このワックス１を密封したワックス感温体には自動車の
始動と同時に通電されるヒータが附属しており、その熱
が金属容器２を介してワックス１に伝わるとワックス１
が膨張してニードル４を押上げる。The wax temperature sensitive body sealed with wax 1 is equipped with a heater that is energized at the same time as the start of the car, and when the heat is transferred to wax 1 via metal container 2, wax 1
expands and pushes up the needle 4.
ニードル４の先端は気化器の絞り弁開度を調節するリン
ク機構に接触しているので、このリンク機構を作動させ
て絞り弁開度を縮少し、部材が進行するにつれてアイド
ル開度まで絞り弁を閉じるようになっている。The tip of the needle 4 is in contact with a link mechanism that adjusts the throttle valve opening of the carburetor, so this link mechanism is operated to reduce the throttle valve opening, and as the member advances, the throttle valve opens until it reaches the idle opening. It is designed to close.
ワックス感温体は昇温時にはこのような作用をするが、
自動車の運転を停止しその必要がなくなった場合はワッ
クス感温体は外気温度と同じ温度となり、ワックス１は
縮少する。Wax thermosensitive elements act like this when the temperature rises,
When the car is stopped and there is no longer a need for it, the wax temperature sensing element becomes the same temperature as the outside air temperature, and the wax 1 shrinks.
このときはワックス感温体はニードル４を引戻すことが
できないので、リンク機構に設けた戻しばねによって旧
位置に戻される。At this time, the wax temperature sensing element cannot pull back the needle 4, so it is returned to the old position by a return spring provided in the link mechanism.
このようにワックス感温体のニードル４は反覆移動する
ため、ニードル４が可撓膜３を摩擦して粗面としかつ可
撓膜３を疲労させる。Since the needle 4 of the wax thermosensitive body repeatedly moves in this way, the needle 4 rubs against the flexible membrane 3 to make the surface rough and fatigue the flexible membrane 3.
その結果、ワックス１の温度上昇に対するニードル４０
ストロークが変化しリンク機構の作動位置を移動させる
ことになる。As a result, the needle 40 with respect to the temperature increase of the wax 1
The stroke changes and moves the operating position of the link mechanism.
即ち、気化器の絞り弁開度を変化させる時期が調整時と
異なるようになって、エンジンの回転状態と排気組成を
悪化させる。In other words, the timing at which the throttle valve opening of the carburetor is changed is different from that during adjustment, which deteriorates the rotational state of the engine and the composition of the exhaust gas.
本発明は、長期間に亘って良好な精度で作動するワック
ス感温体を提供することを目的とし、その特徴とすると
ころは、ニードル表面および二ドルに接する可撓膜の面
の少なくとも一方に摩擦係数の小さい物質、例えば弗素
系合成樹脂を被覆したことにある。An object of the present invention is to provide a wax temperature sensitive body that operates with good accuracy over a long period of time, and is characterized in that at least one of the surface of the needle and the surface of the flexible membrane in contact with the needle is The reason is that it is coated with a material that has a small coefficient of friction, such as a fluorine-based synthetic resin.
第２図は本発明の一実施例であるワックス感温体に用い
るニードルの断面図である。FIG. 2 is a cross-sectional view of a needle used in a wax thermosensor according to an embodiment of the present invention.
ニードル４は摩擦係数の少さいテフロン（デュポン社の
商品名）被膜９を施しである。The needle 4 is coated with a Teflon (trade name of DuPont) coating 9 having a low coefficient of friction.
このようなニードル４を使用すればゴム製可撓膜３の面
との摩擦が少く良く滑るので膜を粗面にすることなくか
つ可撓膜３の疲労による強度変化を生じない。If such a needle 4 is used, the friction with the surface of the rubber flexible membrane 3 is small and it slides well, so the membrane does not have a rough surface and the strength of the flexible membrane 3 does not change due to fatigue.
第３図は第２図のニードルと従来のニードルとの性質を
比較する線図で、縦軸はこれらのニードルを組込んだワ
ックス感温体に温度変化を繰返し与えたときのニードル
のストローク低下量を間で示しており、横軸は温度変化
の繰返し回数を示している。Figure 3 is a diagram comparing the properties of the needle shown in Figure 2 and a conventional needle, where the vertical axis shows the drop in stroke of the needle when temperature changes are repeatedly applied to a wax thermosensor incorporating these needles. The horizontal axis shows the number of repetitions of temperature change.
この実験は第３図の右側に折れ線で示すようにワックス
感温体を一２０℃の状態と１２０℃の状態を交互に繰返
し与えたものである。In this experiment, the temperature of the wax temperature sensitive body was alternately and repeatedly applied to -20°C and 120°C, as shown by the broken line on the right side of FIG.
破線１２は従来の不銹鋼製ニードルの場合で、温度変化
を２０００回繰返した時から急激にニードルのストロー
クは低下している。A broken line 12 shows the case of a conventional needle made of stainless steel, and the stroke of the needle suddenly decreases after the temperature change is repeated 2000 times.
更に回数を増加して約２万回になったときは、ニードル
のストロークは０．７５ｍｍ縮小しも早や実用上使用不
可能な状態となる。When the number of times is further increased to approximately 20,000 times, the stroke of the needle is reduced by 0.75 mm, but it becomes practically unusable.
これに反して第２図のテフロン被膜を施したニードルの
場合は、実験初期に僅かにストロークが低下するがその
後は一定しており、２万回以上実験を繰り返したが約５
万回程度迄は実用できる結果を得た。On the other hand, in the case of the Teflon-coated needle shown in Figure 2, the stroke decreased slightly at the beginning of the experiment, but remained constant after that.
Practical results were obtained up to about 10,000 times.
ちなみに、ワックス感温体の５万回の温度変化の繰り返
しは、自動車の走行距離で約１０万ｋｍに相当するもの
と推定されるので、実用上十分な性質を考えて良い。Incidentally, it is estimated that 50,000 repetitions of temperature changes in the wax thermosensitive body corresponds to approximately 100,000 km of driving distance of a car, so it can be considered that the properties are sufficient for practical use.
以上本実施例のワックス感温体は、ニードルにテフロン
被膜を施すことによって、寒冷地においても長期間高精
度に作動するという効果をもっている。As described above, the wax thermosensitive element of this embodiment has the effect of operating with high precision for a long period of time even in cold regions by applying a Teflon coating to the needle.
上記実施例はテフロン被膜を施したニードルを使用した
場合であるが、ニードル４は従来のままで可撓膜３のニ
ードル４との接触面にテフロンの薄膜を密着させても同
様な効果が得られる。The above embodiment uses a needle coated with Teflon, but the same effect can be obtained even if the needle 4 remains the same as the conventional one and a thin Teflon film is closely attached to the contact surface of the flexible membrane 3 with the needle 4. It will be done.
また、ニードル４と可撓膜３の両方にテフロン被覆を施
せば更に有効である。Further, it is more effective if both the needle 4 and the flexible membrane 3 are coated with Teflon.
なお、ワックス感温体に用いられる可撓膜３は一２０℃
の低温でも柔軟性を失なわず、１２０℃の高温にも耐え
る合成ゴム材で製作されていることはいうまでもない。In addition, the flexible film 3 used for the wax temperature sensor is -20°C.
Needless to say, it is made of synthetic rubber that does not lose its flexibility even at low temperatures of 120 degrees Celsius and can withstand high temperatures of 120 degrees Celsius.
また、ニードル４をテフロン材で作るということも考え
られるが、ワックス感温体のニードル４には相当の荷重
がかかるので変形する恐れがある。It is also conceivable to make the needle 4 from Teflon material, but since a considerable load is applied to the wax temperature-sensitive needle 4, there is a risk of deformation.
このような荷重のかからない所に使用するものであれば
テフロン棒を使用することができる。A Teflon rod can be used as long as it is used in a place where such a load is not applied.
本発明のワックス感温体は、高精度でかつ長寿命である
という効果をもっている。The wax temperature sensitive body of the present invention has the effects of high precision and long life.
第１図は従来のワックス感温体の断面図、第２図は本発
明の一実施例であるワックス感温体に用いられるニード
ルの断面図、第３図は従来の二ドルと第２図のニードル
との性能を比較する線図である。
１・・・・・・ワックス、２・・・・・・金属容器、３
・・・・・・可撓ＩＬＬ ４・・・・・・ニードル、９
・・・・・・テフロン被膜。Fig. 1 is a sectional view of a conventional wax thermosensor, Fig. 2 is a sectional view of a needle used in a wax thermosensor which is an embodiment of the present invention, and Fig. 3 is a sectional view of a conventional wax thermosensor. FIG. 2 is a diagram comparing performance with the needle of 1...Wax, 2...Metal container, 3
...Flexible ILL 4...Needle, 9
...Teflon coating.
Claims (1)
スと、このワックスに接触し上記金属容器の開口部を密
封する可撓膜と、この可撓膜を介して上記ワックスに半
ば埋没するごとく設置した剛体製ニードルとを備え、上
記ワックスの温度が上昇したとき上記ニードルを押出す
ごとく構成したワックス感温体において、上記ニードル
の表面および上記ニードルに接する上記可撓膜の面の少
なくとも一方を摩擦係数の小さい物質で形成してなるこ
とを特徴とするワックス感温体。 ２ 上記ニードルが、金属棒を弗素系合成樹脂で被覆し
たニードルである特許請求の範囲第１項記載のワックス
感温体。 ３ 上記可撓膜が、上記ニードルに接するゴム製膜面に
弗素系合成樹脂の薄膜を密着させた可撓膜である特許請
求の範囲第１項又は第２項記載のワックス感温体。[Scope of Claims] 1. A wax made of a fluid thermally expandable material housed in a metal container, a flexible film that contacts the wax and seals the opening of the metal container, and a flexible film that contacts the wax to seal the opening of the metal container. A wax thermosensitive body is provided with a rigid needle installed so as to be partially buried in the wax, and configured to push out the needle when the temperature of the wax rises, the surface of the needle and the flexible membrane in contact with the needle A wax temperature sensing element characterized in that at least one of its surfaces is made of a material with a small coefficient of friction. 2. The wax temperature sensitive body according to claim 1, wherein the needle is a needle made of a metal rod coated with a fluorine-based synthetic resin. 3. The wax thermosensitive member according to claim 1 or 2, wherein the flexible film is a flexible film in which a thin film of fluorine-based synthetic resin is adhered to the rubber film surface in contact with the needle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53022129A JPS5826535B2 (en) | 1978-03-01 | 1978-03-01 | wax thermosensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP53022129A JPS5826535B2 (en) | 1978-03-01 | 1978-03-01 | wax thermosensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS54115682A JPS54115682A (en) | 1979-09-08 |
| JPS5826535B2 true JPS5826535B2 (en) | 1983-06-03 |
Family
ID=12074267
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP53022129A Expired JPS5826535B2 (en) | 1978-03-01 | 1978-03-01 | wax thermosensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5826535B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6855043B1 (en) | 1999-07-09 | 2005-02-15 | Applied Materials, Inc. | Carrier head with a modified flexible membrane |
| US10160093B2 (en) | 2008-12-12 | 2018-12-25 | Applied Materials, Inc. | Carrier head membrane roughness to control polishing rate |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5755950Y2 (en) * | 1978-02-06 | 1982-12-02 |
-
1978
- 1978-03-01 JP JP53022129A patent/JPS5826535B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS54115682A (en) | 1979-09-08 |
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