JPH043161Y2 - - Google Patents
Info
- Publication number
- JPH043161Y2 JPH043161Y2 JP1986126993U JP12699386U JPH043161Y2 JP H043161 Y2 JPH043161 Y2 JP H043161Y2 JP 1986126993 U JP1986126993 U JP 1986126993U JP 12699386 U JP12699386 U JP 12699386U JP H043161 Y2 JPH043161 Y2 JP H043161Y2
- Authority
- JP
- Japan
- Prior art keywords
- rotating member
- sealing device
- rubber
- circumferential surface
- radial
- 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 15
- 239000013013 elastic material Substances 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 5
- 230000006866 deterioration Effects 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000002542 deteriorative effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000001747 exhibiting effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007665 sagging Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Sealing With Elastic Sealing Lips (AREA)
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
（産業上の利用分野）
本考案は、互いに同芯に配置されて相対回転運
動をなす２部材間に使用される密封装置に関し、
更に詳しくは、例えば自動車等のブレーキドラム
のように、大なる発熱を伴う回転運動部分に使用
される密封装置に関する。[Detailed description of the invention] (Industrial application field) The present invention relates to a sealing device used between two members that are arranged concentrically with each other and make relative rotational movement.
More specifically, the present invention relates to a sealing device used in a rotating part that generates a large amount of heat, such as a brake drum of an automobile.
（従来の技術）
自動車のブレーキ装置において、互いに同芯に
配置されて相対回転運動をなすブレーキドラム及
び該ブレーキドラムと対向する周面との〓間を通
つて侵入するダスト或いは水を阻止するために、
第３図に例示するような密封装置が使用されてい
る。(Prior art) In an automobile brake system, for preventing dust or water from entering through the gap between the brake drums, which are arranged concentrically with each other and make a relative rotational movement, and the peripheral surface facing the brake drum. To,
A sealing device as illustrated in FIG. 3 is used.
同図の密封装置においては、金属板材を曲げ加
工されて略Ｌ字様の断面形状を呈する補強リング
をゴム様弾性材料により覆われてなる固定部３が
回転部材１に嵌合され、固定部３から斜め方向に
伸びたゴム様弾性材料製シールリツプ４が回転部
材１の周面の対向面２と摺動して図上で右方から
侵入する異物を阻止している。 In the sealing device shown in the figure, a fixed part 3, which is formed by bending a metal plate and having a substantially L-shaped cross-sectional shape and covered with a rubber-like elastic material, is fitted into the rotating member 1. A seal lip 4 made of a rubber-like elastic material extending obliquely from 3 slides on the opposing surface 2 of the circumferential surface of the rotating member 1 to prevent foreign matter from entering from the right side in the figure.
（考案が解決しようとする問題点）
上記した密封装置においては、固定部３の全内
周面が回転部材１の周面に密着する構造となつて
いるために、この密封装置を装着された機械装置
において固定部１を取付けられた回転部材１が発
熱した場合には、熱膨脹した回転部材１により固
定部３が押し広げられるとともに、固定部３及び
シールリツプ４が加熱され、押し広げられた状態
でゴム部分のへたりを生起させるために、運転停
止に伴う回転部材１の熱降下により収縮時に、嵌
合不良による固定部１の脱落或いはシールリツプ
４の浮き上がり状態を惹起する危険性があつた。(Problem to be solved by the invention) In the above-mentioned sealing device, since the entire inner circumferential surface of the fixed part 3 is in close contact with the circumferential surface of the rotating member 1, it is difficult to install the sealing device. When the rotating member 1 to which the fixing part 1 is attached generates heat in a mechanical device, the fixing part 3 is pushed apart by the thermally expanded rotating member 1, and the fixing part 3 and the seal lip 4 are heated and pushed apart. In order to cause the rubber portion to sag, there is a risk that the fixing portion 1 may fall off due to poor fitting or the seal lip 4 may come up when the rotating member 1 shrinks due to the heat drop caused by the stoppage of operation.
加熱による固定部３の内周側ゴム部分のへたり
を無くすことをねらつて固定部３の内周側の金属
面を露出させたものにおいては、伝熱量の増加に
伴うゴム部分の劣化による密封機能の低下がもた
らされる。 In the case where the metal surface on the inner circumferential side of the fixing part 3 is exposed in order to eliminate the settling of the inner circumferential rubber part of the fixing part 3 due to heating, sealing may occur due to deterioration of the rubber part due to the increase in the amount of heat transfer. This results in decreased functionality.
本考案は、上記した問題点を解消して加熱によ
るゴム部分のへたり或いは劣化を防止した密封装
置の構造を提示することを目的とするものであ
る。 The object of the present invention is to solve the above-mentioned problems and to present a structure of a sealing device that prevents the rubber portion from becoming sagging or deteriorating due to heating.
（問題点を解決するための手段）
本考案は、上記した従来の技術による密封装置
における問題点を考慮して、回転部材に対する固
定部の嵌合周面を金属の露出面となし、略Ｌ字様
の断面形状を呈する固定部の円筒部の径方向部側
と、回転部材の周面との間に環状空所を形成させ
るものである。(Means for Solving the Problems) In consideration of the problems in the sealing devices according to the conventional technology described above, the present invention makes the fitting circumferential surface of the fixed part with respect to the rotating member an exposed metal surface, and approximately L An annular space is formed between the radial side of the cylindrical portion of the fixed portion exhibiting a letter-like cross-sectional shape and the circumferential surface of the rotating member.
（作用）
上記した構成を備えた密封装置においては、固
定部を構成する円筒部の径方向部側と、回転部材
の周面との間に形成された環状空所内に内蔵され
た空気が、回転部材からゴム部分への熱の伝達を
遮断する。(Function) In the sealing device having the above configuration, the air contained in the annular space formed between the radial side of the cylindrical part constituting the fixed part and the circumferential surface of the rotating member, Blocks heat transfer from the rotating member to the rubber part.
（実施例）
第１図の実施例においては、略Ｌ字様の断面形
状を呈する補強リングの外周面にゴム様弾性材料
を覆われてなり、斜め方向に伸びて対向周面２と
摺動するシールリツプ４を付された固定部３が、
回転部材１側を金属の露出面に形成されて円筒部
５の端部側の回転部材１に嵌合させ、円筒部５の
径方向部６側と回転部材１の周面との間に環状空
所７を形成している。(Embodiment) In the embodiment shown in FIG. 1, the outer circumferential surface of a reinforcing ring having a substantially L-shaped cross-sectional shape is covered with a rubber-like elastic material, which extends diagonally and slides on the opposing circumferential surface 2. The fixing part 3 is attached with a seal lip 4 that
The rotating member 1 side is formed on an exposed metal surface and is fitted into the rotating member 1 on the end side of the cylindrical portion 5, and an annular shape is formed between the radial portion 6 side of the cylindrical portion 5 and the circumferential surface of the rotating member 1. A void space 7 is formed.
径方向部６の径方向内方部に、ゴム様弾性材料
による接触部８が付されて径方向部６と回転部材
１とを離間させており、円筒部５の端部にゴム様
弾性材料によるガスケツト９が付されて円筒部５
及び回転部材１の嵌合部への異物の侵入を阻止し
ている。 A contact part 8 made of a rubber-like elastic material is attached to the radial inner part of the radial part 6 to separate the radial part 6 and the rotating member 1, and a rubber-like elastic material is attached to the end of the cylindrical part 5. A gasket 9 is attached to the cylindrical part 5.
Also, foreign matter is prevented from entering the fitting portion of the rotating member 1.
第２図の実施例は、回転部材１の周面に対向す
る周面２と摺動するシールリツプ４を２条形成さ
れ、該シールリツプ４の他に径方向の対向面と摺
動する端面シールリツプを付され、更に径方向部
６に付された接触部６に径方向に伸びた空〓を形
成されている点において、第１図の実施例と相違
するものである。 In the embodiment shown in FIG. 2, two seal lips 4 are formed that slide on the circumferential surface 2 facing the circumferential surface of the rotating member 1, and in addition to the seal lips 4, an end face seal lip that slides on the opposing surface in the radial direction is formed. This is different from the embodiment shown in FIG. 1 in that the contact portion 6 attached to the radial portion 6 is provided with a radially extending cavity.
（考案の効果）
本考案の密封装置が、上記したように、回転部
材に対する固定部の嵌合周面を金属の露出面に形
成され、固定部の円筒部の径方向部側と回転部材
の周面との間に環状空所を形成された構成を備え
ていることにより、回転部材側に生起された発熱
のゴム様弾性材料部分への伝達が遮断されるの
で、従来技術により密封装置において見られたゴ
ム部分のへたり或いは劣化による固定部の脱落又
はシール機能の低下のおそれが解消する。(Effect of the invention) As described above, the sealing device of the present invention has the fitting peripheral surface of the fixed part with respect to the rotating member formed on the exposed metal surface, and the radial part side of the cylindrical part of the fixed part and the fitting circumferential surface of the fixed part with respect to the rotating member. By having a configuration in which an annular space is formed between the rotating member and the surrounding surface, transmission of heat generated on the rotating member side to the rubber-like elastic material portion is blocked. This eliminates the fear that the fixing part will fall off or the sealing function will deteriorate due to wear or deterioration of the rubber part.
第１図は、本考案の一実施例の部分断面図、第
２図は、本考案の他の実施例の部分断面図、第３
図は、従来の技術による密封装置の一例の部分断
面図である。
１……回転部材、２……対向周面、３……固定
部、４……シールリツプ、５……円筒部、６……
径方向部、７……環状空所、８……接触部、９…
…ガスケツト。
FIG. 1 is a partial cross-sectional view of one embodiment of the present invention, FIG. 2 is a partial cross-sectional view of another embodiment of the present invention, and FIG.
The figure is a partial cross-sectional view of an example of a conventional sealing device. DESCRIPTION OF SYMBOLS 1... Rotating member, 2... Opposing peripheral surface, 3... Fixed part, 4... Seal lip, 5... Cylindrical part, 6...
radial portion, 7... annular cavity, 8... contact portion, 9...
...Gasket.
Claims (1)
される固定部３と、ゴム様弾性材料をもつて成形
され、前記固定部３から伸びて前記回転部材１に
対向する周面２と摺動するシールリツプ４とを有
する密封装置において、前記回転部材１に対する
前記固定部３の嵌合周面を金属の露出面に形成さ
れ、前記固定部３の円筒部５の径方向部６側と、
前記回転部材１の周面との間に環状空所７を形成
していることを特徴とする密封装置。 A fixed part 3 having a substantially L-shaped cross-sectional shape and attached to the rotating member 1; a peripheral surface 2 formed from a rubber-like elastic material and extending from the fixed part 3 and facing the rotating member 1; In a sealing device having a sliding seal lip 4, the fitting peripheral surface of the fixing part 3 with respect to the rotating member 1 is formed on an exposed metal surface, and the radial part 6 side of the cylindrical part 5 of the fixing part 3 is ,
A sealing device characterized in that an annular cavity 7 is formed between the rotating member 1 and the circumferential surface thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986126993U JPH043161Y2 (en) | 1986-08-20 | 1986-08-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1986126993U JPH043161Y2 (en) | 1986-08-20 | 1986-08-20 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6333057U JPS6333057U (en) | 1988-03-03 |
| JPH043161Y2 true JPH043161Y2 (en) | 1992-01-31 |
Family
ID=31021320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1986126993U Expired JPH043161Y2 (en) | 1986-08-20 | 1986-08-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH043161Y2 (en) |
-
1986
- 1986-08-20 JP JP1986126993U patent/JPH043161Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6333057U (en) | 1988-03-03 |
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