JPS6139129Y2 - - Google Patents
Info
- Publication number
- JPS6139129Y2 JPS6139129Y2 JP11843780U JP11843780U JPS6139129Y2 JP S6139129 Y2 JPS6139129 Y2 JP S6139129Y2 JP 11843780 U JP11843780 U JP 11843780U JP 11843780 U JP11843780 U JP 11843780U JP S6139129 Y2 JPS6139129 Y2 JP S6139129Y2
- Authority
- JP
- Japan
- Prior art keywords
- drum
- back plate
- stepped portion
- slope
- tip
- 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 230000002093 peripheral effect Effects 0.000 claims description 3
- 230000002265 prevention Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 description 7
- 239000010865 sewage Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
- Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
Description
【考案の詳細な説明】
本考案は自動車の制動装置として一般に用いら
れているドラムブレーキの水浸入防止装置に関す
るものである。[Detailed Description of the Invention] The present invention relates to a water intrusion prevention device for a drum brake, which is generally used as a braking device for automobiles.
ドラムブレーキは、通常第１，２図に示すよう
にホイール１を取付けたドラム２と、該ドラム２
の内側端縁部を覆うよう車輪支持部材（図示省
略）に固着されたバツクプレート５と、該バツク
プレート５に取付けられたシユー３及び該シユー
３をドラム２の内周面に圧接作動させるホイール
シリンダ（図示省略）等よりなる。 A drum brake usually consists of a drum 2 to which a wheel 1 is attached, and a drum 2, as shown in FIGS. 1 and 2.
A back plate 5 fixed to a wheel support member (not shown) so as to cover the inner edge of the drum, a shoe 3 attached to the back plate 5, and a wheel that presses the shoe 3 against the inner peripheral surface of the drum 2. It consists of a cylinder (not shown), etc.
このような一般的なドラムブレーキにおいて
は、バツクプレート５はその外周端部を車輪と一
体となつて回転するドラム２に対し、第１，２図
に示すようにドラム１の端縁部に形成した溝２１
或は段部２２等に所定の隙間をもつて嵌め込んだ
状態にて組付けられるのが普通である（例えば実
開昭54−122281号公報参照）。 In such a general drum brake, the back plate 5 is formed on the edge of the drum 1, as shown in FIGS. groove 21
Alternatively, it is usually assembled by being fitted into the stepped portion 22 or the like with a predetermined gap (see, for example, Japanese Utility Model Application Publication No. 122281/1981).
ところがこのような従来構造の場合は、車両走
行中車輪にて跳ね上げられた汚水や埃等がバツク
プレート５の内側から矢印Ａのように溝２１或は
段部２２の間隙よりドラム２内に浸入し易く、又
一度浸入した水等は外部に排出されにくいと言う
欠点を有しており、従来はこのような欠点を防ぐ
為にバツクプレート５の外周部にダストカバー４
を取付け、水又は埃等をカツトする方策を採つて
いるのが普通である。 However, in the case of such a conventional structure, sewage, dust, etc. splashed up by the wheels while the vehicle is running flows from the inside of the back plate 5 into the drum 2 through the gap between the groove 21 or the stepped portion 22 as shown by arrow A. It has the disadvantage that it is easy for water to infiltrate, and that water, etc., once infiltrated is difficult to be discharged to the outside.In order to prevent such disadvantages, conventionally, a dust cover 4 was provided on the outer periphery of the back plate 5.
Usually, measures are taken to remove water, dust, etc. by installing a
本考案は上記従来のダストカバーを用いること
なしにドラム内への水等の浸入を防止し得る構造
を提供することにより部品数及び組付工数等の低
減をはかつたもので、以下第３図の実施例につい
て説明する。 The present invention aims to reduce the number of parts and assembly man-hours by providing a structure that can prevent water from entering the drum without using the conventional dust cover. The embodiment shown in the figure will be explained.
本考案においては第３図に示すようにドラム２
の内方端部近くの外周面に外方に突出する段差部
２ａを全周にわたり形成すると共に、該段差部２
ａから内方端部にかけて外径が徐々に小となる斜
面部２ｂを形成する。 In this invention, as shown in Fig. 3, the drum 2
A stepped portion 2a protruding outward is formed on the outer circumferential surface near the inner end of the step portion 2a over the entire circumference.
A sloped portion 2b is formed whose outer diameter gradually decreases from a to the inner end.
一方バツクプレート５はその外周部を絞つて上
記ドラム２の斜面部２ｂの外周側にほぼ均一な隙
間をもつて対向する斜面部５ｂを形成すると共
に、該斜面部５ｂの先端部５ａはドラム２の段差
部２ａ外周を所定の隙間をもつて覆い且つその先
端縁５a′が段差部２ａより外方にｌだけ突出した
形状に構成する。 On the other hand, the back plate 5 has its outer periphery narrowed to form a slanted surface 5b facing the outer periphery of the slanted surface 2b of the drum 2 with a substantially uniform gap. The outer periphery of the stepped portion 2a is covered with a predetermined gap, and the distal end edge 5a' thereof is configured to protrude outward by an amount l from the stepped portion 2a.
上記のように構成した本考案によればＡ矢印方
向からの汚水等はドラム２の外周面を覆つている
バツクプレート５の斜面部５ｂに当り流下すると
共に、バツクプレート５の先端部５ａに当りその
先端縁５a′よりドラム２の外周面上に落ちた汚水
等は、該先端縁５a′が段差部２ａより外方に突出
しているので、決して段差部２ａを乗り越えるこ
とはできず、そのままドラム２外周面を流下して
排出され、ドラム２内への水等の浸入はほぼ完全
に防止され得る。 According to the present invention configured as described above, sewage etc. from the direction of arrow A hits the slope part 5b of the back plate 5 covering the outer peripheral surface of the drum 2 and flows down, and also hits the tip part 5a of the back plate 5. Since the leading edge 5a' protrudes outward from the stepped portion 2a, sewage, etc. that has fallen onto the outer circumferential surface of the drum 2 from the leading edge 5a' will never be able to get over the stepped portion 2a, and will remain on the drum. The drum 2 is discharged by flowing down the outer circumferential surface of the drum 2, and water and the like can be almost completely prevented from entering the drum 2.
又斜面部２ｂ及び５ｂを図示のように曲面に形
成すると、該斜面部の距離（図示のイ〜ロ間の距
離）を長くすることができ、水、埃等のドラム２
内への浸入を更に一層的確に防止することができ
る。 In addition, if the slope parts 2b and 5b are formed into curved surfaces as shown in the figure, the distance between the slope parts (distance between A and B in the figure) can be increased, and water, dust, etc. can be removed from the drum 2.
Infiltration into the inside can be prevented even more accurately.
以上のように本考案によれば、従来のダストカ
バーなしにドラム内への水、埃等の浸入をほぼ完
全に防止し得るもので、構造簡単且つコスト低廉
なることと相俟つて実用上多大の効果をもたらし
得るものである。 As described above, according to the present invention, it is possible to almost completely prevent water, dust, etc. from entering the drum without the need for a conventional dust cover. This can bring about the following effects.
第１図及び第２図はそれぞれ従来のドラムブレ
ーキの構造を示す要部断面図、第３図は本考案の
実施例を示す要部断面図である。
１……ホイール、２……ドラム、２ａ……段差
部、２ｂ……斜面部、３……シユー、５………バ
ツクプレート、５ａ……先端部、５ｂ……斜面
部。
1 and 2 are sectional views of main parts showing the structure of a conventional drum brake, respectively, and FIG. 3 is a sectional view of main parts showing an embodiment of the present invention. DESCRIPTION OF SYMBOLS 1...Wheel, 2...Drum, 2a...Step part, 2b...Slope part, 3...Show, 5...Back plate, 5a...Tip part, 5b...Slope part.
Claims (1)
する段差部を全周にわたり形成すると共に、該
段差部から内方端縁にかけて外径が徐々に小と
なる斜面部を形成し、バツクプレートの外周部
に上記ドラムの斜面部の外側を所定の間隙をも
つて覆う斜面部を形成すると共に、該バツクプ
レートの斜面部の先端部はドラムの段差部外側
を所定の間隙をもつて覆い且つ該先端部の先端
縁がドラムの段差部より外方に突出した構造と
なつていることを特徴とするドラムブレーキの
水浸入防止装置。 (2) ドラム及びバツクプレートの斜面部を曲面に
形成したことを特徴とする実用新案登録請求の
範囲第１項記載のドラムブレーキの水浸入防止
装置。[Claims for Utility Model Registration] (1) A stepped portion protruding outward is formed on the outer peripheral surface near the inner edge of the drum over the entire circumference, and the outer diameter gradually decreases from the stepped portion to the inner edge. A slope portion is formed on the outer circumferential portion of the back plate to cover the outside of the slope portion of the drum with a predetermined gap, and the tip of the slope portion of the back plate is A water intrusion prevention device for a drum brake, characterized in that the outside of the stepped portion is covered with a predetermined gap, and the tip edge of the tip portion protrudes outward from the stepped portion of the drum. (2) The water intrusion prevention device for a drum brake as set forth in claim 1, wherein the slope portions of the drum and back plate are formed into curved surfaces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11843780U JPS6139129Y2 (en) | 1980-08-21 | 1980-08-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11843780U JPS6139129Y2 (en) | 1980-08-21 | 1980-08-21 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5740734U JPS5740734U (en) | 1982-03-05 |
| JPS6139129Y2 true JPS6139129Y2 (en) | 1986-11-11 |
Family
ID=29479143
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11843780U Expired JPS6139129Y2 (en) | 1980-08-21 | 1980-08-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6139129Y2 (en) |
-
1980
- 1980-08-21 JP JP11843780U patent/JPS6139129Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5740734U (en) | 1982-03-05 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS6111543Y2 (en) | ||
| JPH02122231U (en) | ||
| JPS6139129Y2 (en) | ||
| JPH0626756Y2 (en) | Drum brake waterproof device | |
| KR0113614Y1 (en) | A protection cap of disk wheel | |
| JPS6336182Y2 (en) | ||
| JPS6326961Y2 (en) | ||
| JPH062770A (en) | Wheel hub sealing device for motorcycle | |
| JPS6230866Y2 (en) | ||
| JPS6021556Y2 (en) | Pin type disc brake sliding part seal structure | |
| JPH0135947Y2 (en) | ||
| JPH0213781Y2 (en) | ||
| JPS639790Y2 (en) | ||
| JPH0426741Y2 (en) | ||
| JPH0213780Y2 (en) | ||
| JPH07293603A (en) | Waterproof device for drum brake | |
| JPS6041648U (en) | Foreign matter intrusion prevention device for automobile brakes | |
| JPH0182339U (en) | ||
| JPS6212641Y2 (en) | ||
| JPS62119537U (en) | ||
| JPS6045162U (en) | Foreign matter intrusion prevention device for automobile brakes | |
| JPH03106457U (en) | ||
| JPH0658351A (en) | Disc brake device | |
| JPH0291229U (en) | ||
| JPS5850328A (en) | Drum brake |