JPH038833Y2 - - Google Patents
Info
- Publication number
- JPH038833Y2 JPH038833Y2 JP1986112678U JP11267886U JPH038833Y2 JP H038833 Y2 JPH038833 Y2 JP H038833Y2 JP 1986112678 U JP1986112678 U JP 1986112678U JP 11267886 U JP11267886 U JP 11267886U JP H038833 Y2 JPH038833 Y2 JP H038833Y2
- Authority
- JP
- Japan
- Prior art keywords
- sealing device
- heat storage
- temperature
- storage material
- sealing
- 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
- 238000007789 sealing Methods 0.000 claims description 40
- 238000005338 heat storage Methods 0.000 claims description 20
- 239000011232 storage material Substances 0.000 claims description 20
- 239000013013 elastic material Substances 0.000 claims description 8
- 230000008018 melting Effects 0.000 description 6
- 238000002844 melting Methods 0.000 description 6
- 238000010276 construction Methods 0.000 description 5
- 239000007790 solid phase Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 3
- 239000007791 liquid phase Substances 0.000 description 3
- 238000012856 packing Methods 0.000 description 3
- 239000012071 phase Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 2
- 230000004927 fusion Effects 0.000 description 2
- 230000001771 impaired effect Effects 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 235000017281 sodium acetate Nutrition 0.000 description 2
- BDKLKNJTMLIAFE-UHFFFAOYSA-N 2-(3-fluorophenyl)-1,3-oxazole-4-carbaldehyde Chemical compound FC1=CC=CC(C=2OC=C(C=O)N=2)=C1 BDKLKNJTMLIAFE-UHFFFAOYSA-N 0.000 description 1
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 description 1
- 150000001805 chlorine compounds Chemical class 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 229920005570 flexible polymer Polymers 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 239000001632 sodium acetate Substances 0.000 description 1
- 229940087562 sodium acetate trihydrate Drugs 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Sealing Devices (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、特に極寒地での使用にも耐え得る密
封装置に関する。[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a sealing device that can withstand use particularly in extremely cold regions.
（従来の技術）
パツキン、Ｏリング、ガスケツト、オイルシー
ル等の密封装置は、ゴム、可撓性高分子材料等の
弾性材単体で一体成形されており、各種機器にお
いて流体の漏出を防止するシール機能を果たして
いる。従つて、この種密封装置のシール性能は、
これを構成する弾性材自身の有する特性に大きく
依存することとなり、低温時の当該密封装置のシ
ール性能は専ら弾性材の低温特性（耐低温性）に
左右される結果となる。(Prior art) Sealing devices such as gaskets, O-rings, gaskets, and oil seals are integrally molded from elastic materials such as rubber and flexible polymer materials, and are used as seals to prevent fluid leakage in various devices. fulfills its function. Therefore, the sealing performance of this type of sealing device is
This largely depends on the characteristics of the elastic material itself, and the sealing performance of the sealing device at low temperatures depends solely on the low-temperature characteristics (low-temperature resistance) of the elastic material.
（考案が解決しようとする問題点）
しかしながら、特に外気温度が例えば−30℃以
下となるような極寒地において上記従来の密封装
置を使用すると、ゴム等の弾性材の弾性が損なわ
れてシール面に対する当該密封装置の追従性が悪
化し、そのシール機能が著しく低下するという不
具合が生じる。(Problem that the invention aims to solve) However, when the above-mentioned conventional sealing device is used especially in extremely cold regions where the outside temperature is -30℃ or less, the elasticity of the elastic material such as rubber is lost and the sealing surface This causes a problem in that the followability of the sealing device to the temperature deteriorates, and its sealing function significantly deteriorates.
本考案は上記問題に鑑みてなされたもので、そ
の目的とする処は、極寒地においてもそのシール
機能を安定して保持することができる密封装置を
提供するにある。 The present invention was devised in view of the above problems, and its purpose is to provide a sealing device that can stably maintain its sealing function even in extremely cold regions.
（問題点を解決するための手段）
上記目的を達成すべく本考案は、ゴム等の弾性
材にて成形される密封装置の内部に蓄熱材を埋設
するようにした。(Means for Solving the Problems) In order to achieve the above object, the present invention embeds a heat storage material inside a sealing device formed of an elastic material such as rubber.
（作用）
而して、上記蓄熱材は固相・液相間を相変化し
て融解熱（潜熱）を蓄積、放出するため、その融
点より高い温度領域で密封装置を使用するときは
該蓄熱材は液相状態となつて蓄熱し、融点より低
い温度領域、例えば極寒地で密封装置を使用する
ときは蓄熱材は固体に相変化して今まで蓄積して
いた熱を放出して、この熱で密封装置自体を暖め
るので、該密封装置を構成するゴム等の弾性材は
その弾性が損なわれる程までには冷却されず、従
つて極寒地においても当該密封装置のシール機能
が損なわれることがない。(Function) Since the heat storage material changes phase between solid and liquid phases and accumulates and releases heat of fusion (latent heat), when the sealing device is used in a temperature range higher than its melting point, the heat storage material The material becomes a liquid phase and stores heat, and when the sealing device is used in a temperature region lower than the melting point, for example in an extremely cold region, the heat storage material changes to a solid phase and releases the heat that has been stored until now. Since the heat warms the sealing device itself, the elastic material such as rubber that makes up the sealing device is not cooled to the point where its elasticity is lost, and therefore the sealing function of the sealing device is impaired even in extremely cold regions. There is no.
（実施例）
以下に本考案の実施例を添付図面に基づいて説
明する。(Example) An example of the present invention will be described below based on the accompanying drawings.
第１図は本考案に係る密封装置の半截断面図、
第２図は同密封装置の温度変化を従来のそれとの
比較で示したグラフである。 FIG. 1 is a half-cut sectional view of the sealing device according to the present invention;
FIG. 2 is a graph showing the temperature change of the same sealing device in comparison with that of a conventional device.
第１図において１は本考案に係る密封装置を構
成するＵパツキンであつて、該パツキン１の本体
２はゴム等の弾性材にて断面Ｕ字状に一体成形さ
れており、該本体２内には同じく断面Ｕ字状を示
す塊状の潜熱蓄熱材３が埋設されている。そし
て、このＵパツキン１はハウジング４の凹溝４ａ
内に嵌設されており、その内周部は、図示の如
く、上下動する摺動軸５の外周に摺接している。 In FIG. 1, reference numeral 1 denotes a U-packet constituting the sealing device according to the present invention. A lumpy latent heat storage material 3, which also has a U-shaped cross section, is buried therein. This U packing 1 is connected to the groove 4a of the housing 4.
The inner periphery thereof is in sliding contact with the outer periphery of a sliding shaft 5 that moves up and down, as shown in the figure.
ところで、上記潜熱蓄熱材３は固相・液相に相
変化してその相変化に伴なう融解熱（潜熱）を利
用し、融点より高い温度領域においては液状態に
て蓄熱し、融点より低い温度領域においては固体
に相変化して蓄熱した熱を放出するものであつ
て、この種潜熱蓄熱材３としてはｎ−パラフイン
及びその誘導体、塩水化物、包接化合物等を用い
ることができるが、使用に際しては密封装置が使
用される温度領域に照らして最適な融点を有する
ものを選定することが必要である。 By the way, the latent heat storage material 3 undergoes a phase change between a solid phase and a liquid phase, utilizes the heat of fusion (latent heat) accompanying the phase change, stores heat in a liquid state in a temperature range higher than the melting point, and In a low temperature range, it changes into a solid phase and releases the stored heat, and n-paraffin and its derivatives, chlorides, clathrate compounds, etc. can be used as this type of latent heat storage material 3. When used, it is necessary to select a sealing device that has an optimal melting point in light of the temperature range in which it will be used.
次に第１図に示すＵパツキン１を例えば外気温
度が−30℃以下の極寒地において建機用シール装
置として使用する場合の当該Ｕパツキン１の作用
を説明する。尚、この場合は潜熱蓄熱材３として
は前記包接化合物に含まれる酢酸ナトリウム・３
水和物（NaCH3COO・3H2O）を用いており、
該酢酸ナトリウム・３水和物の融点は58℃であ
る。 Next, the operation of the U-packet 1 shown in FIG. 1 will be explained when the U-packet 1 is used as a sealing device for a construction machine, for example, in an extremely cold region where the outside air temperature is -30 DEG C. or lower. In this case, the latent heat storage material 3 is sodium acetate 3 contained in the clathrate compound.
Hydrate (NaCH 3 COO・3H 2 O) is used,
The melting point of the sodium acetate trihydrate is 58°C.
而して、極寒地であつても建機の作動中におい
てはＵパツキン１の雰囲気温度は60〜80℃の到
し、この温度領域は潜熱蓄熱材３の融点58℃より
も高いため、該潜熱蓄熱材３は液状態にて周囲か
ら熱を奪つて蓄熱する。 Therefore, even in extremely cold regions, the ambient temperature of the U packing 1 reaches 60 to 80°C while the construction machine is in operation, and this temperature range is higher than the melting point of the latent heat storage material 3, 58°C. The latent heat storage material 3 absorbs heat from the surroundings and stores it in a liquid state.
そして、建機を停止すれば、Ｕパツキン１の雰
囲気も外気温度まで下がり、潜熱蓄熱材３は固相
に変化して建機の作動中に蓄積した熱を放出し、
Ｕパツキン１を加熱してこれの温度が外気温度ま
で下がるのを防止し、当該Ｕパツキン１の弾性が
損なわれるのを防いで極寒地においてもそのシー
ル機能を安定して高く保つ。従つて、建機を再起
動しても、Ｕパツキン１のシール機能は確保され
ているため、油洩れ等の不具合が発生することは
ない。 Then, when the construction machine is stopped, the atmosphere in the U-packet 1 drops to the outside temperature, and the latent heat storage material 3 changes to a solid phase and releases the heat accumulated during the operation of the construction machine.
The U-packet 1 is heated to prevent its temperature from dropping to the outside temperature, and the elasticity of the U-packet 1 is prevented from being impaired, thereby stably maintaining its sealing function at a high level even in extremely cold regions. Therefore, even if the construction machine is restarted, the sealing function of the U-packet 1 is maintained, and problems such as oil leakage will not occur.
尚、本考案に係る密封装置のシール部温度の実
測値を外気温度に対してプロツトした結果を第２
図の曲線Ａにて示すが、同図中、直線Ｂにて示す
従来の密封装置の実線結果と比較して明らかな如
く、本考案装置によれば、そのシール部温度の外
気温度までの低下を有効に防ぐことができる。例
えば、外気温度が−40℃の場合、従来の密封装置
ではそのシール部温度は外気温度と略同等の−40
℃まで下がるのに対し、本考案装置によればその
シール部温度を−10℃以上に保つことができる。 In addition, the results of plotting the actual measured value of the temperature of the sealing part of the sealing device according to the present invention against the outside air temperature are shown in the second section.
As shown by the curve A in the figure, as is clear from the comparison with the solid line result of the conventional sealing device shown by the straight line B in the same figure, according to the device of the present invention, the temperature of the seal portion is lowered to the outside temperature. can be effectively prevented. For example, when the outside temperature is -40℃, the temperature of the seal in a conventional sealing device is -40℃, which is approximately the same as the outside temperature.
℃, but with the device of the present invention, the temperature of the sealed portion can be maintained at -10℃ or higher.
次に本考案の変更実施例を第３図ａ，ｂ、第４
図、第５図にそれぞれ示すが、第３図ａはＵパツ
キン１１の本体１２内部に多数の粒子状を成す潜
熱蓄熱材１３…を埋設したもの、同図ｂはＵパツ
キン２１の本体２２に形成された凹溝２２ａ内に
嵌入されたＯリング２６内に断面円形の潜熱蓄熱
材２３を埋設したものをそれぞれ示す。又、第４
図はＯリング３１の内部に断面円形の潜熱蓄熱材
３３を同芯状に埋設したもの、第５図はオイルシ
ール４１のシール本体４２内に潜熱蓄熱材４３を
埋設したものをそれぞれ示す。 Next, modified embodiments of the present invention are shown in Figures 3a, b and 4.
3 and 5, FIG. 3a shows a case in which a large number of particulate latent heat storage materials 13 are embedded inside the main body 12 of the U-packet 11, and FIG. Each figure shows a latent heat storage material 23 having a circular cross section embedded in an O-ring 26 fitted into a groove 22a formed therein. Also, the fourth
The figure shows a case in which a latent heat storage material 33 with a circular cross section is embedded concentrically inside an O-ring 31, and FIG. 5 shows a case in which a latent heat storage material 43 is embedded in a seal body 42 of an oil seal 41.
而して、上記何れの変更実施例においても、前
記第一実施例にて得られたと同様の効果を得るこ
とができる。 Therefore, in any of the modified embodiments described above, the same effects as those obtained in the first embodiment can be obtained.
尚、以上は本考案を特にＵパツキン、Ｏリン
グ、オイルシールに適用した例について述べた
が、本考案はガスケツトその他任意の密封装置に
対して適用し得るものである。 Although the present invention has been specifically applied to U-packets, O-rings, and oil seals, the present invention can also be applied to gaskets and other arbitrary sealing devices.
（考案の効果）
以上の説明で明らかな如く本考案によれば、ゴ
ム等の弾性材にて成形される密封装置の内部に蓄
熱材を埋設したため、該密封装置の温度低下を防
ぎ、特に極寒地においてもそのシール機能を高く
保つことができるという効果が得られる。(Effects of the invention) As is clear from the above explanation, according to the invention, the heat storage material is embedded inside the sealing device formed of an elastic material such as rubber, which prevents the temperature of the sealing device from decreasing, especially in extremely cold temperatures. The effect is that the sealing function can be maintained at a high level even on the ground.
第１図は本考案に係る密封装置（Ｕパツキン）
の半截断面図、第２図は同密封装置の温度変化を
示すグラフ、第３図乃至第５図は本考案の変更実
施例を示す各種密封装置の部分断面図である。
符号の説明、１，１１，２１……Ｕパツキン、
３，１３，２３，３３，４３……潜熱蓄熱材、３
１……Ｏリング、４１……オイルシール。
Figure 1 shows the sealing device (U packing) according to the present invention.
FIG. 2 is a graph showing temperature changes of the sealing device, and FIGS. 3 to 5 are partial sectional views of various sealing devices showing modified embodiments of the present invention. Explanation of codes, 1, 11, 21...U Packkin,
3, 13, 23, 33, 43...Latent heat storage material, 3
1...O ring, 41...Oil seal.
Claims (1)
つて、その内部に蓄熱材を埋設して構成される
ことを特徴とする密封装置。 (2) 前記蓄熱材は、潜熱蓄熱材であることを特徴
とする実用新案登録請求の範囲第１項記載の密
封装置。[Scope of Claim for Utility Model Registration] (1) A sealing device formed of an elastic material such as rubber, characterized in that it is constructed by embedding a heat storage material inside the sealing device. (2) The sealing device according to claim 1, wherein the heat storage material is a latent heat storage material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986112678U JPH038833Y2 (en) | 1986-07-24 | 1986-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986112678U JPH038833Y2 (en) | 1986-07-24 | 1986-07-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6320567U JPS6320567U (en) | 1988-02-10 |
| JPH038833Y2 true JPH038833Y2 (en) | 1991-03-05 |
Family
ID=30993774
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986112678U Expired JPH038833Y2 (en) | 1986-07-24 | 1986-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH038833Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009024541A (en) * | 2007-07-18 | 2009-02-05 | Sanden Corp | Shaft seal |
-
1986
- 1986-07-24 JP JP1986112678U patent/JPH038833Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6320567U (en) | 1988-02-10 |
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