JPS61116129A - Cooling device for sealed type drum brake - Google Patents
Cooling device for sealed type drum brakeInfo
- Publication number
- JPS61116129A JPS61116129A JP23752284A JP23752284A JPS61116129A JP S61116129 A JPS61116129 A JP S61116129A JP 23752284 A JP23752284 A JP 23752284A JP 23752284 A JP23752284 A JP 23752284A JP S61116129 A JPS61116129 A JP S61116129A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- cover
- drum
- drum brake
- cooling device
- 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
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16D—COUPLINGS FOR TRANSMITTING ROTATION; CLUTCHES; BRAKES
- F16D65/00—Parts or details
- F16D65/78—Features relating to cooling
- F16D65/82—Features relating to cooling for internally-engaging brakes
- F16D65/833—Features relating to cooling for internally-engaging brakes with closed cooling system
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Braking Arrangements (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、自動３輪車等の車両に使用される密封式ドラ
ムブレーキの冷却装置に関する。DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a cooling device for a sealed drum brake used in a vehicle such as a three-wheeled motor vehicle.
（従来の技術）
従来、実開昭５７−１７９５６１号公報等により、ブレ
ーキドラムを被包するブレーキカバーを設けて、泥水や
塵埃等のブレーキドラムへの付着を防止するようにした
密封式ドラムブレーキは知られ、この場合ブレーキング
時の発熱による内圧上昇を考慮して該カバーに息抜き孔
を形成したものも知られる。(Prior art) Conventionally, as disclosed in Japanese Utility Model Application Publication No. 57-179561, etc., a sealed drum brake is provided with a brake cover that encloses the brake drum to prevent muddy water, dust, etc. from adhering to the brake drum. In this case, it is also known that a vent hole is formed in the cover in consideration of an increase in internal pressure due to heat generation during braking.
（発明が解決しようとする問題点）
上記密封式ドラムブレーキは、ブレーキカバー内に熱が
籠り易く、息抜き孔を形成してもこれは内圧変化に際し
ての息抜き作用を営むだけで空気の出入りによる冷却は
期待できず、冷却性の向上が問題となる。(Problems to be Solved by the Invention) In the above-mentioned sealed drum brake, heat tends to accumulate inside the brake cover, and even if a breather hole is formed, it only acts as a breather when the internal pressure changes, and cools it by letting air in and out. cannot be expected, and improvement of cooling performance becomes a problem.
本発明は、かかる問題点を解決すべく、ブレーキカバー
内を積極的に換気して冷却性を向上させ得るようにした
装置を提供することをその目的とする。SUMMARY OF THE INVENTION In order to solve this problem, an object of the present invention is to provide a device that can actively ventilate the inside of a brake cover to improve cooling performance.
（問題点を解決するための手段）
本発明は、上記目的を達成すべく、ブレーキドラムを被
包するブレーキカバーを設ける密封式ドラムブレーキに
おいて、該カバーに吸気孔と排気孔とを形成し、該吸気
孔から該排気孔に該カバー内を介して強制的に空気を流
す換気手段を設けたことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention provides a sealed drum brake in which a brake cover that encloses a brake drum is provided, in which an intake hole and an exhaust hole are formed in the cover, The present invention is characterized in that a ventilation means is provided for forcing air to flow from the intake hole to the exhaust hole through the inside of the cover.
（実施例） □ 本発明を図示の実施例に付説明する。(Example) □ The present invention will be explained with reference to the illustrated embodiments.
第１図及び第２図を参照して、（１）は中間にエンジン
（２）を搭載した自動３輪車の車体を示し、該車体（１
）の前方に前輪（３）と、その後方にリヤフォーク（４
ンを介して左右１対の後輪（５） （５）とを設け、該
両後輪（５）−（５）間の車軸（６）回りにドラムブレ
ーキ（７）を配置するものとし、これを詳述するに、第
３図に明示する如く、該車軸（６）を該リヤフォーク（
４）の後端の車軸ケース（８）に挿通軸支させて、該車
軸（６）にブレーキドラム（９）と、該ケース（８）に
ブレーキシュー（ＩＧと操作カム（Ｉｖとを組付けたブ
レーキパネル（＋２１とを固定し、更に該ドラム（９）
を被包するブレーキカバーｌ′Ｉ３を設けて密封式のド
ラムブレーキ（７）を構成した。Referring to FIG. 1 and FIG.
), the front wheel (3) is in front of the front wheel (3), and the rear fork (4) is behind it.
A pair of left and right rear wheels (5) (5) are provided through the wheel, and a drum brake (7) is arranged around the axle (6) between the two rear wheels (5). To explain this in detail, as shown in Fig. 3, the axle (6) is connected to the rear fork (
4) Insert and support the axle case (8) at the rear end, and assemble the brake drum (9) to the axle (6) and the brake shoes (IG and operation cam (Iv) to the case (8). Fix the brake panel (+21) and the drum (9).
A sealed drum brake (7) is constructed by providing a brake cover l'I3 that encloses the brake.
尚、図示のものでは、該ブレーキパネル■を該カバー〇
３の構成部材に兼用し、該ドラム（９）を挾んで該パネ
ル（ＩＺの逆側に蓋部材（１３ａ）を設け、該パネルａ
３と該蓋部材（１３ａ）とをその外周において互いに重
合することにより該カバー０３を構成したが、これに限
るものでは無く、該ドラム（９）を該パネルａδに亘っ
て被包するようにブレーキカバーを設けても勿論良い。In the illustrated example, the brake panel (2) is also used as a component of the cover (3), a lid member (13a) is provided on the opposite side of the panel (IZ), and the drum (9) is sandwiched between the brake panel (1) and the cover (13a).
3 and the lid member (13a) are overlapped with each other at their outer peripheries to form the cover 03, but the present invention is not limited thereto. Of course, a brake cover may also be provided.
又、図示のものでは該ドラム（９）をその内周に固定の
カラー（９ａ）において該車軸（６）にスプライン係合
させた。In the illustrated example, the drum (9) is splined to the axle (6) at a collar (9a) fixed to its inner periphery.
図面で（１３ｂ）は該蓋部材（１３ａ）と車軸（６）と
の間に施したシール部材、ａ＠はエアクリーナ、（４ａ
）はリヤフォークク４）の下側に設けたアンダーガード
を示す。In the drawing, (13b) is a sealing member provided between the lid member (13a) and the axle (6), a@ is an air cleaner, and (4a)
) indicates an under guard provided under the rear fork 4).
以上は上記した従来のものと特に異ならないが、本発明
によれば、ブレーキカバー０３に吸気孔ａ！ｉｌと排気
孔ａｅとを形成し、該吸気孔（＋５１から該排気孔ａｅ
に該カバーａ３内を介して強制的に空気を流す換気手段
を設けるもので、これを更に詳述するに、図示のもので
は該カバー〇３を構成する蓋部材（１３ａ）の車軸（６
）寄りの部分に該吸気孔ｌ′１９と、ブレーキパネル（
１２１の外周部に該排気孔○ｅとを形成し、ブレーキド
ラム（９）に該換気手段を構成するファン（１７）を取
付けて成るものとし、ここで該ファン（１７＋は、該ド
ラム（９）の底壁部外面に第４図に示す如く径方向に長
手の羽根（１７ａ）の複数枚を突設して成る遠心ファン
、或いは該ドラム（９）の周壁部外層に軸線方向に長手
の羽根（１７ｂ）を複数突設して成る軸流ファン何れの
型式にも構成可能である。図面で（９ｂ）は該ドラム（
９）の底壁部に形成した軽量孔である。又、換気手段は
、ファン（１７）に限るものではなく、例えば排気孔器
をこれに連なるチューブ■を介してエンジン（２）の吸
気系の例えばエアクリーナ○のに接続し、エンジン（２
）の吸気負圧によりブレーキカバー（１３の空気を吸い
出すようにした吸気式に構成することも可能であり、又
これをファン（＋７）と伴用しても良い。The above is not particularly different from the conventional one described above, but according to the present invention, the brake cover 03 has an intake hole a! il and an exhaust hole ae, and from the intake hole (+51 to the exhaust hole ae
is provided with a ventilation means for forcing air to flow through the inside of the cover a3.To explain this in more detail, in the illustrated one, the axle (6) of the lid member (13a) constituting the cover 03 is provided.
) and the brake panel (
The exhaust hole ○e is formed on the outer periphery of the brake drum (9), and a fan (17) constituting the ventilation means is attached to the brake drum (9). ), as shown in FIG. It can be configured as any type of axial flow fan with a plurality of protruding blades (17b). In the drawing, (9b) is the drum (
9) is a lightweight hole formed in the bottom wall. In addition, the ventilation means is not limited to the fan (17); for example, an exhaust hole device may be connected to, for example, an air cleaner ○ in the intake system of the engine (2) via a tube
It is also possible to configure the brake cover (13) as an intake type in which air is sucked out by the intake negative pressure of the brake cover (13), and this may also be used together with a fan (+7).
尚、換気手段を吸気孔ａｅや排気孔ａｅに連なる外部の
吸排気用ファンで構成することも可能であるが、コスト
的及びスペース的にも上記のものの方が有利である。Although it is possible to configure the ventilation means with an external intake/exhaust fan connected to the intake hole ae and the exhaust hole ae, the above method is more advantageous in terms of cost and space.
又、吸気孔ａ９は、これを介しての水や塵埃の侵入を防
止すべく、チューブａ９を介して車体（１）上部の例え
ばヘッドバイブ（１ａ）後部のメインバイブの開口に繋
ぐものとした。In addition, in order to prevent water and dust from entering through the intake hole a9, the intake hole a9 is connected to the opening of the main vibrator at the rear of the head vibrator (1a), for example, on the upper part of the vehicle body (1) via a tube a9. .
図面で■はブレーキカバーａ３の底部のドレン孔■に施
したドレンボルト、■はアンダーガード（４ａ）に形成
した該ボルト■の操作穴を示す。In the drawings, ■ indicates a drain bolt formed in the drain hole (■) at the bottom of the brake cover a3, and ■ indicates an operation hole for the bolt (■) formed in the under guard (4a).
（作 用）
ブレーキシューａ３内には換気手段により吸気孔（＋５
１から排気孔ａｅに向って強制的に空気が流れ、この空
気によりカバー（ＩＧ内の空冷作用が与えられ、熱的に
は走行風を受ける開放式のドラムブレーキと同様の条件
となって、頻繁なブレーキングによっても熱雷の発生は
無い。(Function) There is an air intake hole (+5
Air is forced to flow from 1 to the exhaust hole ae, and this air provides an air cooling effect inside the cover (IG), resulting in thermal conditions similar to those of an open drum brake that receives running air. Even with frequent braking, thermal lightning does not occur.
（発明の効果）
この様に本発明によるときは、ブレーキカバ−内の空冷
作用が（ｑられ、ブレーキカバー内での熱の籠りによる
熱雷の発生が防止され、ブレーキの耐久性が向上される
効果を有する。(Effects of the Invention) As described above, according to the present invention, the air cooling effect inside the brake cover is reduced, the occurrence of heat lightning due to heat trapped inside the brake cover is prevented, and the durability of the brake is improved. It has the effect of
第１図は本発明装置を具備する密封式ドラムブレーキを
搭載する自動３輪車の側面図、第２図はその背面図、第
３図は第２図の■−■線截断裁断図、第４図は第３図の
ＩＶ−ｒＶ線線断断側面図ある。
（７）・・・密封式ドラムブレーキ
（９）・・・ブレーキドラム
ａ３・・・ブレーキカバー
（＋！ｉ１・・・吸気孔
ａｅ・・・排気孔
（＋７１・・・ファン（換気手段）
外２名
第１図
ａ
菓３図Fig. 1 is a side view of a three-wheeled motor vehicle equipped with a sealed drum brake equipped with the device of the present invention, Fig. 2 is a rear view thereof, Fig. 3 is a cutaway view taken along the line ■-■ of Fig. 2, and FIG. 4 is a cross-sectional side view taken along the line IV-rV in FIG. 3. (7)...Sealed drum brake (9)...Brake drum a3...Brake cover (+!i1...Intake hole ae...Exhaust hole (+71...Fan (ventilation means) Outside 2 people Figure 1a Figure 3
Claims (1)
密封式ドラムブレーキにおいて、該カバーに吸気孔と排
気孔とを形成し、該吸気孔から該排気孔に該カバー内を
介して強制的に空気を流す換気手段を設けたことを特徴
とする密封式ドラムブレーキの冷却装置。 ２、該ブレーキドラムにファンを取付けて該換気手段を
構成することを特徴とする特許請求の範囲第１項記載の
密封式ドラムブレーキの冷却装置。 ３、該排気孔をエンジンの吸気系に接続し、エンジンの
吸気負圧を利用して該換気手段を構成することを特徴と
する特許請求の範囲第１項記載の密封式ドラムブレーキ
の冷却装置。[Claims] 1. In a sealed drum brake provided with a brake cover that encloses the brake drum, an intake hole and an exhaust hole are formed in the cover, and the intake hole is connected to the exhaust hole through the inside of the cover. A cooling device for a sealed drum brake, characterized by having a ventilation means for forcing air to flow through the drum brake. 2. The cooling device for a sealed drum brake according to claim 1, wherein a fan is attached to the brake drum to constitute the ventilation means. 3. The cooling device for a sealed drum brake as set forth in claim 1, wherein the exhaust hole is connected to the intake system of the engine, and the ventilation means is configured using the engine's intake negative pressure. .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23752284A JPS61116129A (en) | 1984-11-13 | 1984-11-13 | Cooling device for sealed type drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23752284A JPS61116129A (en) | 1984-11-13 | 1984-11-13 | Cooling device for sealed type drum brake |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS61116129A true JPS61116129A (en) | 1986-06-03 |
Family
ID=17016571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23752284A Pending JPS61116129A (en) | 1984-11-13 | 1984-11-13 | Cooling device for sealed type drum brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS61116129A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01131035U (en) * | 1988-03-02 | 1989-09-06 | ||
| EP1325243A1 (en) * | 2000-09-18 | 2003-07-09 | Safe Effect Pty Ltd | A brake shoe and drum brake system incorporating same |
-
1984
- 1984-11-13 JP JP23752284A patent/JPS61116129A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01131035U (en) * | 1988-03-02 | 1989-09-06 | ||
| EP1325243A1 (en) * | 2000-09-18 | 2003-07-09 | Safe Effect Pty Ltd | A brake shoe and drum brake system incorporating same |
| EP1325243A4 (en) * | 2000-09-18 | 2005-01-12 | Safe Effect Pty Ltd | A brake shoe and drum brake system incorporating same |
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