JPH07138587A - Lubricating oil composition for deceleration mechanism - Google Patents
Lubricating oil composition for deceleration mechanismInfo
- Publication number
- JPH07138587A JPH07138587A JP29048293A JP29048293A JPH07138587A JP H07138587 A JPH07138587 A JP H07138587A JP 29048293 A JP29048293 A JP 29048293A JP 29048293 A JP29048293 A JP 29048293A JP H07138587 A JPH07138587 A JP H07138587A
- Authority
- JP
- Japan
- Prior art keywords
- lubricating oil
- oil composition
- base oil
- plastic polymer
- particle diameter
- 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
- Lubricants (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、防火防煙シャッター等
における減速機構に使用される潤滑油組成物に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lubricating oil composition used for a speed reduction mechanism in fire and smoke prevention shutters.
【０００２】[0002]
【従来の技術】一般に、防火防煙シャッターは、天井内
に収納され、火災時に火炎、煙等を感知し、通路等を閉
鎖するために使用されるもので、その構造としては、巻
取りシャフトに一端を固定して巻回され、火災時等には
巻取りシャフトの回転と共にその他端が自重で落下する
防火防煙シャッターと、非火災時には防火防煙シャッタ
ーの他端部を係止し、火炎、煙等の感知機構または手動
機構によりその係止を解除する機構とからなっている。2. Description of the Related Art Generally, a fire / smoke-proof shutter is housed in a ceiling and used for detecting flames, smoke, etc. at the time of a fire and closing passages, and the structure thereof is a winding shaft. One end is fixed and wound around, and when a fire occurs, lock the other end of the fire and smoke prevention shutter where the other end falls under its own weight as the winding shaft rotates, and the other end of the fire and smoke prevention shutter when there is no fire, It is composed of a mechanism for detecting flames, smoke, etc. or a mechanism for releasing the lock by a manual mechanism.
【０００３】このような、防火防煙シャッターにおいて
は、その落下開始時には落下速度は始めは緩やかである
が、落下するにつれ、シャッターの自重によりそのスピ
ードが早くなり、火災等から退避する際に落下する防火
防煙シャッターに触れたり、下敷きになると非常に危険
であるという問題がある。In such a fire / smoke-proof shutter, the fall speed is gentle at the beginning of the fall, but as it falls, its speed increases due to the weight of the shutter itself, and the fall occurs when it is evacuated from a fire or the like. There is a problem that it is extremely dangerous if you touch the fire and smoke prevention shutters or if you use them as an underlay.
【０００４】[0004]
【発明が解決しようとする課題】本発明は、このような
防火防煙シャッターにおける減速機構に使用される潤滑
油組成物であって、落下時にそのスピードを抑制しうる
潤滑油組成物の提供を課題とする。DISCLOSURE OF THE INVENTION The present invention provides a lubricating oil composition used for a speed reduction mechanism in such a fire and smoke prevention shutter, the lubricating oil composition being capable of suppressing its speed when dropped. It is an issue.
【０００５】[0005]
【課題を解決するための手段】本発明の減速機構用潤滑
油組成物は、基油に、プラスチックポリマー微粒子を分
散させたことを特徴とする。The lubricating oil composition for reduction gears of the present invention is characterized in that plastic polymer fine particles are dispersed in a base oil.
【０００６】防火防煙シャッターにおける減速機構は、
火炎、煙等の感知機構または手動機構によりその係止を
解除された防火防煙シャッターの落下速度を抑制するも
ので、防火防煙シャッターが倦回された回転シャフトの
一端、または両端に取り付けられ、回転シャフトの一端
またはその両端を固定枠体中に満たした潤滑油中で回転
させ、その粘性抵抗により回転シャフトの回転速度を抑
制し、減速を達成するものである。しかしながら、この
ような減速機構に、例えば鉱油等を使用した場合、剪断
力が増大した時粘性が低くなり、減速機構としての作用
を示さない。The speed reduction mechanism in the fire and smoke prevention shutter is
It controls the falling speed of the fire and smoke shutter that is unlocked by a flame or smoke sensing mechanism or a manual mechanism.The fire and smoke shutter is attached to one end or both ends of the rotating shaft. The rotating shaft is rotated at one end or at both ends thereof in a lubricating oil filled in a fixed frame body, and its viscous resistance suppresses the rotating speed of the rotating shaft to achieve deceleration. However, when mineral oil or the like is used for such a speed reducing mechanism, the viscosity becomes low when the shearing force increases, and the function as the speed reducing mechanism is not exhibited.
【０００７】以前から剪断による粘度の増大する現象
（ダイラタンシー）が報告されているが、本発明者等
は、上述した減速機構用に適した潤滑油組成物への適用
を検討した結果、特定の潤滑油組成物が減速機構用とし
て適していることを見出した。Although the phenomenon of increasing viscosity due to shearing (dilatancy) has been reported for some time, the present inventors have studied the application to a lubricating oil composition suitable for the above-mentioned reduction mechanism, and as a result, It has been found that the lubricating oil composition is suitable for a speed reduction mechanism.
【０００８】以下、本発明の減速機構用潤滑油組成物に
ついて説明する。The lubricating oil composition for a reduction mechanism of the present invention will be described below.
【０００９】本発明の減速機構用潤滑油組成物における
基油は、例えばフタル酸ジオクチル、アジピン酸ジオク
チル、アジピン酸ジイソデシル、フタル酸ｎ−ブチル−
ベンジル、アジピン酸ジイソステアリル等のエステル
油、その他、エチレングリコール、プロピレングリコー
ル、ジエチレングリコール、ジエチレングリコールモノ
メチルエーテル、ジプロピレングリコール等が挙げられ
る。The base oil in the lubricating oil composition for a reduction mechanism of the present invention is, for example, dioctyl phthalate, dioctyl adipate, diisodecyl adipate, n-butyl phthalate.
Examples thereof include ester oils such as benzyl and diisostearyl adipate, and ethylene glycol, propylene glycol, diethylene glycol, diethylene glycol monomethyl ether, and dipropylene glycol.
【００１０】また、プラスチックポリマーとしては、ポ
リ塩化ビニル、スチレン−アクリルニトリル共重合体、
ポリスチレン、ポリビニルトルエン等が挙げられ、その
平均粒径は０．３μｍ〜２．０μｍ、好ましくは０．７
μｍ〜１．３μｍであり、また、平均粒径の±７０％以
下、特に±５０％以下の粒径範囲で正規分布を有するも
のが好まし。粒径分布がブロードであると、ダイラタン
シー現象は明確には発現しない。As the plastic polymer, polyvinyl chloride, styrene-acrylonitrile copolymer,
Examples thereof include polystyrene and polyvinyltoluene, and the average particle size thereof is 0.3 μm to 2.0 μm, preferably 0.7.
It is preferable that the particle size is in the range of μm to 1.3 μm and has a normal distribution in a particle size range of ± 70% or less, particularly ± 50% or less of the average particle size. When the particle size distribution is broad, the dilatancy phenomenon does not clearly appear.
【００１１】プラスチックポリマー微粒子の基油に対す
る分散割合は、体積分率で、０．４〜０．６とするとよ
く、体積分率が０．４未満であると剪断速度が上昇して
も、粘性の増大が得られない。特に、本発明の潤滑油組
成物を防火防煙シャッターの減速機構に使用する場合に
は、剪断力が急激に増大する落下終了時点で急激に減速
する必要があり、そのためにはプラスチックポリマー微
粒子の体積分率としては、好ましくは０．５〜０．６と
するとよい。The volume fraction of the plastic polymer fine particles dispersed in the base oil is preferably 0.4 to 0.6. If the volume fraction is less than 0.4, the viscosity will increase even if the shear rate increases. Cannot be obtained. In particular, when the lubricating oil composition of the present invention is used in a speed reduction mechanism for a fire and smoke prevention shutter, it is necessary to rapidly reduce the shearing force at the end of the fall when the shearing force sharply increases. The volume fraction is preferably 0.5 to 0.6.
【００１２】また、基油とプラスチックポリマーとの組
合せとしては、好ましくはエステル油とポリ塩化ビニ
ル、エチレングリコールとスチレンアクリロニトリル共
重合体との組合せが好ましい。As the combination of the base oil and the plastic polymer, the combination of ester oil and polyvinyl chloride, and the combination of ethylene glycol and styrene acrylonitrile copolymer are preferable.
【００１３】また、上記の分散液には必要に応じて、顔
料、充填剤、安定剤が添加される。If necessary, a pigment, a filler and a stabilizer are added to the above dispersion liquid.
【００１４】[0014]
【作用】本発明の減速機構用潤滑油組成物は、基油にプ
ラスチックポリマー微粒子を分散させたものであり、こ
の組成物は、剪断力が増大するにつれ、粘度が増大す
る、所謂ダイラント流動現象を示すものである。この現
象の詳細な理由は不明であるが、例えば基油中において
最密充填状態での粒子群に剪断力が働くと、粒子間隔が
ずれ、粒子群の見掛けの体積が膨張し、見掛け上の粘度
が増大することによるものと考えらる。特に、そのプラ
スチックポリマー微粒子の体積分率が０．５以上の場合
には剪断力が増大するにつれ、不連続的に粘度が増大す
る現象を呈すため、例えば防火防煙シャッターにおける
減速機構用として適した組成物とできる。The lubricating oil composition for a speed reducer of the present invention is a dispersion of plastic polymer fine particles in a base oil, and this composition has a so-called dirant flow phenomenon in which the viscosity increases as the shearing force increases. Is shown. Although the detailed reason for this phenomenon is unknown, for example, when a shearing force acts on the particle group in the closest packing state in the base oil, the particle spacing is displaced, the apparent volume of the particle group expands, and the apparent volume increases. It is considered that this is due to the increase in viscosity. In particular, when the volume fraction of the plastic polymer fine particles is 0.5 or more, the viscosity increases discontinuously as the shearing force increases, so that it is suitable for a speed reduction mechanism in a fire and smoke prevention shutter, for example. Can be a composition.
【００１５】本発明の減速機構用潤滑油組成物は、防火
防煙シャッターにおける減速機構以外にも、例えばドア
チェッカー等の減速機構においても同様に使用すること
ができる。以下、本発明を実施例、比較例により説明す
る。The lubricating oil composition for a reduction gear mechanism of the present invention can be used in a reduction gear mechanism such as a door checker as well as a reduction gear mechanism in a fire and smoke prevention shutter. Hereinafter, the present invention will be described with reference to Examples and Comparative Examples.
【００１６】[0016]
【実施例１】フタル酸ジオクチル（２０℃、８０ｃＳ
ｔ）に対して、ポリ塩化ビニル微粒子（平均粒径１．２
５μｍ、鐘淵化学工業（株）製、商品名ＰＳＭ−３０）
を体積分率で０．４７、０．４９、０．５１、０．５
５、０．５７の割合で添加し、攪拌装置を使用して分散
させた。Example 1 Dioctyl phthalate (20 ° C., 80 cS
t), polyvinyl chloride fine particles (average particle size 1.2)
5 μm, manufactured by Kanegafuchi Chemical Industry Co., Ltd., trade name PSM-30)
Is a volume fraction of 0.47, 0.49, 0.51, 0.5
It was added at a ratio of 5, 0.57 and dispersed using a stirrer.
【００１７】この分散液を回転粘度計（レオメトリクス
（株）製、ＲＭＳ−８００）中に１ｃｃ入れ、２５℃で
剪断速度を１０-1ｓｅｃ-1〜１０3 ｓｅｃ-1に変化さ
せ、各剪断速度時での粘度（ｃＰ）を測定した。1 cc of this dispersion was put into a rotational viscometer (RMS-800 manufactured by Rheometrics Co., Ltd.), and the shear rate was changed to 10 -1 sec -1 to 10 3 sec -1 at 25 ° C. The viscosity (cP) at the shear rate was measured.
【００１８】この測定結果を図１に示す。図中、□はプ
ラスチックポリマーの体積分率が０．４７のもの、同じ
く、○は０．４９、▲は０．５１、■は０．５５、●は
０．５７の測定結果を示す。The results of this measurement are shown in FIG. In the figure, □ indicates the measurement results of the plastic polymer having a volume fraction of 0.47, ∘ indicates 0.49, ▴ indicates 0.51, ■ indicates 0.55, and ● indicates 0.57.
【００１９】図からわかるように、本発明の減速機構用
潤滑油組成物は、剪断速度が一定以上となると、急激に
粘度が増大し、特に、プラスチックポリマーの体積分率
が０．５以上の時には、その粘度増大が不連続的に増大
し、急激に減速しうることがわかる。As can be seen from the figure, the lubricating oil composition for a speed reducer of the present invention rapidly increases in viscosity when the shear rate exceeds a certain level, and in particular, the volume fraction of the plastic polymer is 0.5 or more. At times, it can be seen that the increase in viscosity can increase discontinuously and slow down rapidly.
【００２０】[0020]
【実施例２】フタル酸ジオクチル（２０℃、８０ｃＳ
ｔ）に対して、ポリ塩化ビニル微粒子（平均粒径１μｍ
で、粒径範囲０．３μｍ〜１．７μｍで正規分布）を体
積分率で０．５８の割合で添加し、攪拌装置を使用して
分散させた。Example 2 Dioctyl phthalate (20 ° C., 80 cS
t), polyvinyl chloride fine particles (average particle size 1 μm
Then, a particle size range of 0.3 μm to 1.7 μm (normal distribution) was added at a volume fraction of 0.58, and the mixture was dispersed using a stirrer.
【００２１】この分散液を回転粘度計（レオメトリクス
（株）製、ＲＭＳ−８００）中に１ｃｃ入れ、２５℃で
剪断速度を１０-1ｓｅｃ-1〜１０3 ｓｅｃ-1に変化さ
せ、各剪断速度時での粘度（ｃＰ）を測定した。この測
定結果を図２に示す。1 cc of this dispersion was put into a rotational viscometer (RMS-800 manufactured by Rheometrics Co., Ltd.), and the shear rate was changed to 10 -1 sec -1 to 10 3 sec -1 at 25 ° C. The viscosity (cP) at the shear rate was measured. The measurement result is shown in FIG.
【００２２】[0022]
【比較例１】実施例２の微粒子に代えて、ポリ塩化ビニ
ル微粒子（粒径１μｍ〜５．６μｍのブロードな粒径分
布を有する粒子）を使用し、実施例２と同様に分散液を
調製し、同様に、各剪断速度時での粘度（ｃＰ）を測定
した。この測定結果を図３に示す。Comparative Example 1 Instead of the fine particles of Example 2, polyvinyl chloride fine particles (particles having a broad particle size distribution of 1 μm to 5.6 μm) were used to prepare a dispersion liquid in the same manner as in Example 2. Then, similarly, the viscosity (cP) at each shear rate was measured. The measurement result is shown in FIG.
【００２３】[0023]
【比較例２】実施例２の微粒子に代えて、ポリ塩化ビニ
ル微粒子（平均粒径０．３μｍの粒子２０％と粒径１μ
ｍ〜５．６μｍのブロードな粒径分布を有する粒子８０
％の混合粒子）を使用し、実施例２と同様に分散液を調
製し、同様に、各剪断速度時での粘度（ｃＰ）を測定し
た。この測定結果を図４に示す。Comparative Example 2 Instead of the fine particles of Example 2, polyvinyl chloride fine particles (20% particles having an average particle diameter of 0.3 μm and a particle diameter of 1 μm) are used.
Particles 80 having broad particle size distribution of m to 5.6 μm
% Mixed particles), a dispersion was prepared in the same manner as in Example 2, and the viscosity (cP) at each shear rate was measured in the same manner. The measurement result is shown in FIG.
【００２４】比較例１、２からわかるように、基油に分
散される微粒子における粒径分布の形状の影響が大きい
ことがわかる。As can be seen from Comparative Examples 1 and 2, the shape of the particle size distribution in the fine particles dispersed in the base oil has a great influence.
【００２５】[0025]
【発明の効果】本発明の減速機構用潤滑油組成物は、剪
断力の増大につれ、粘性が増大するので、簡単な機構で
その減速作用を達成することができる。特に、組成物に
おけるプラスチックポリマーの体積分率を０．５以上と
すると、一定剪断速度以上となると不連続的に粘度を増
大させることができるので、例えば防火防煙シャッター
における減速機構への適用に適したものとできる。EFFECTS OF THE INVENTION Since the lubricating oil composition for a speed reducer of the present invention increases in viscosity as the shearing force increases, the speed reducing action can be achieved with a simple mechanism. In particular, when the volume fraction of the plastic polymer in the composition is 0.5 or more, the viscosity can be increased discontinuously at a constant shear rate or more, and therefore, for example, in application to a speed reduction mechanism in a fire and smoke prevention shutter. Can be suitable.
【図１】 本発明の減速機構用潤滑油組成物における、
２５℃での剪断速度と粘性との変化を示す図である。FIG. 1 shows a lubricating oil composition for a reduction mechanism of the present invention,
It is a figure which shows the change of a shear rate and a viscosity at 25 degreeC.
【図２】 減速機構用潤滑油組成物として、プラスチッ
クポリマーを配合しない場合における、２５℃での剪断
速度と粘性との変化を示す図である。FIG. 2 is a diagram showing changes in shear rate and viscosity at 25 ° C. when a plastic polymer is not added as a lubricating oil composition for a speed reduction mechanism.
【図３】 減速機構用潤滑油組成物におけるプラスチッ
クポリマー微粒子の粒径分布がブロードな場合におけ
る、２５℃での剪断速度と粘性との変化を示す図であ
る。FIG. 3 is a diagram showing changes in shear rate and viscosity at 25 ° C. when the particle size distribution of plastic polymer fine particles in the lubricating oil composition for a speed reduction mechanism is broad.
【図４】 減速機構用潤滑油組成物におけるプラスチッ
クポリマー微粒子の粒径分布がブロードなものを含む場
合における、２５℃での剪断速度と粘性との変化を示す
図である。FIG. 4 is a diagram showing changes in shear rate and viscosity at 25 ° C. in the case where the plastic polymer fine particles in the lubricating oil composition for a speed reduction mechanism have a broad particle size distribution.
Claims (1)
分散させたことを特徴とする減速機構用潤滑油組成物。1. A lubricating oil composition for a speed reduction mechanism, characterized in that plastic polymer particles are dispersed in a base oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29048293A JPH07138587A (en) | 1993-11-19 | 1993-11-19 | Lubricating oil composition for deceleration mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29048293A JPH07138587A (en) | 1993-11-19 | 1993-11-19 | Lubricating oil composition for deceleration mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH07138587A true JPH07138587A (en) | 1995-05-30 |
Family
ID=17756595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29048293A Pending JPH07138587A (en) | 1993-11-19 | 1993-11-19 | Lubricating oil composition for deceleration mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH07138587A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8262484B2 (en) | 2005-12-13 | 2012-09-11 | Nsk Ltd. | Telescopic shaft for vehicle steering shaft and grease composition for lubricating telescopic shaft |
| JP2013028343A (en) * | 2005-12-13 | 2013-02-07 | Nsk Ltd | Telescopic shaft for vehicle steering shaft and grease composition for lubricating telescopic shaft |
| JP5301163B2 (en) * | 2005-12-13 | 2013-09-25 | 日本精工株式会社 | Telescopic shaft for vehicle steering shaft and grease composition for lubricating the telescopic shaft |
-
1993
- 1993-11-19 JP JP29048293A patent/JPH07138587A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8262484B2 (en) | 2005-12-13 | 2012-09-11 | Nsk Ltd. | Telescopic shaft for vehicle steering shaft and grease composition for lubricating telescopic shaft |
| JP2013028343A (en) * | 2005-12-13 | 2013-02-07 | Nsk Ltd | Telescopic shaft for vehicle steering shaft and grease composition for lubricating telescopic shaft |
| JP5301163B2 (en) * | 2005-12-13 | 2013-09-25 | 日本精工株式会社 | Telescopic shaft for vehicle steering shaft and grease composition for lubricating the telescopic shaft |
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