JPH02500Y2 - - Google Patents
Info
- Publication number
- JPH02500Y2 JPH02500Y2 JP18369782U JP18369782U JPH02500Y2 JP H02500 Y2 JPH02500 Y2 JP H02500Y2 JP 18369782 U JP18369782 U JP 18369782U JP 18369782 U JP18369782 U JP 18369782U JP H02500 Y2 JPH02500 Y2 JP H02500Y2
- Authority
- JP
- Japan
- Prior art keywords
- cylinder
- cover
- edge
- main body
- throat
- 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
- 239000000428 dust Substances 0.000 claims description 11
- 238000007789 sealing Methods 0.000 claims description 9
- 239000003566 sealing material Substances 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- 239000000463 material Substances 0.000 description 3
- 230000006866 deterioration Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
Landscapes
- Braking Arrangements (AREA)
Description
【考案の詳細な説明】
この考案はドラムブレーキにおけるブレーキシ
ユー内拡用のシリンダーを保護するシリンダーカ
バーに関する。[Detailed Description of the Invention] This invention relates to a cylinder cover that protects a cylinder for expanding the brake shoe in a drum brake.
ブレーキシユー内拡用のシリンダーは、ドラム
内周面とパツドの摩擦熱およびこの摩擦によつて
生ずる灼熱粉末の攻撃から保護するためシリンダ
ーカバーが設けられている。しかしこのシリンダ
ーカバーは薄板金属を板金成形して製作されるた
め、このシリンダーカバーの端面とドラムのダス
トカバー面との当接縁には間隙が生ずる。この間
隙は泥水の排出の浸入を招き、一度泥水の浸入が
あると残溜泥水の排出が容易でなく、同時にシリ
ンダーの機能劣化を誘発する問題点が内在してい
る。 The cylinder for expanding the inside of the brake shoe is provided with a cylinder cover to protect it from the heat of friction between the inner circumferential surface of the drum and the pads and from the attack of scorching powder generated by this friction. However, since this cylinder cover is manufactured by sheet metal forming from a thin sheet metal, a gap is created between the abutting edge between the end face of the cylinder cover and the dust cover surface of the drum. This gap invites intrusion of discharged muddy water, and once the muddy water has entered, it is not easy to discharge the residual muddy water, and at the same time, there is a problem that it induces functional deterioration of the cylinder.
この考案はシリンダーカバー端面とダストカバ
ー面の当接縁にシール機構を設けて上述の問題点
を解決したドラムブレーキにおけるシリンダーカ
バーを提供することを目的とするものである。 The object of this invention is to provide a cylinder cover for a drum brake that solves the above-mentioned problems by providing a sealing mechanism at the abutting edge between the end face of the cylinder cover and the surface of the dust cover.
この考案を図示の実施例に基づいて詳細に説明
する。 This invention will be explained in detail based on illustrated embodiments.
第１図は従来例におけるドラムブレーキの一部
を欠除した断面説明図である。図中１はシリンダ
ー本体、２はシリンダーブラケツト、３はアンカ
ーブラケツト、４はシリンダー下部カバー、５は
シリンダー上部カバー、６はダストカバーであ
る。シリンダーカバー本体部はシリンダー下部カ
バー４とシリンダー上部カバー５が中央部で丁度
弁当箱状に差込み接触をなして筒状をなすように
形成され、シリンダー下部カバー４をシリンダー
ブラケツト２とアンカーブラケツト３で挟接した
状態でボルト７で固定し、シリンダー上部カバー
５はボルト８によりシリンダー本体１に固定され
る。またシリンダー下部カバー４とシリンダー上
部カバー５の接続縁９はタイトに圧接されて、こ
の部分からの泥水の侵入することはないが、この
接続縁９と対向するシリンダー下部カバー４の端
縁部１１およびシリンダー上部カバー５の端縁部
１０とダストカバー６間には間隙が生じ、特に上
部シリンダーカバー５の部分から泥水の浸入が問
題となる。そこで、この考案に係るシリンダーカ
バーにおいては、第２図に示すように、シリンダ
ー下部カバー４とシリンダー上部カバー５を組合
わせ接続したシリンダーカバー本体部をダストカ
バー６との間に初めから隔接間隔を設けて形成す
る。つまりシリンダー下部カバー４の端縁部１１
０およびシリンダー上部カバー５の端縁部１００
を従来例のものにおけるよりも短く形成し、これ
によつて生ずる隔接間隔にシール材１６を設けて
形成する。 FIG. 1 is an explanatory cross-sectional view with a portion of a conventional drum brake removed. In the figure, 1 is a cylinder body, 2 is a cylinder bracket, 3 is an anchor bracket, 4 is a cylinder lower cover, 5 is a cylinder upper cover, and 6 is a dust cover. The cylinder cover main body is formed into a cylindrical shape, with a cylinder lower cover 4 and a cylinder upper cover 5 making contact at the center, just like a lunch box, and connecting the cylinder lower cover 4 with a cylinder bracket 2 and an anchor bracket 3. The cylinder upper cover 5 is fixed to the cylinder body 1 by bolts 8 in a sandwiched state. Further, the connecting edge 9 of the cylinder lower cover 4 and the cylinder upper cover 5 is tightly pressed together to prevent muddy water from entering from this area, but the end edge 11 of the cylinder lower cover 4 opposite to this connecting edge 9 A gap is formed between the edge 10 of the cylinder upper cover 5 and the dust cover 6, and muddy water intrusion from the upper cylinder cover 5 becomes a problem. Therefore, in the cylinder cover according to this invention, as shown in FIG. It is formed by providing. In other words, the end edge 11 of the cylinder lower cover 4
0 and the end edge 100 of the cylinder upper cover 5
is formed to be shorter than that of the conventional example, and a sealing material 16 is provided in the space created by this.
シール材１６はゴム係材料を第３図に示すよう
に、シリンダー下部カバー４とシリンダー上部カ
バー５を組合わせ接続したシリンダーカバー本体
部の端面形状と同一形状のほぼ矩形形状の閉鎖枠
に形成する。シリンダー下部カバー４も、シリン
ダー上部カバー５も制動時には振動する。この振
動を吸収し、より一層シール効果を高めるため、
第３図に示すように、横断面形状をほぼ矩形形状
になし、一方端面に開口する係止溝１４を設ける
と同時に、係止溝１４と対向する端面に咽部１８
とこの咽部１８に連接してシール部１９を設けた
シール材１６に形成し、振動の吸収を咽部１８に
負担させシール機能はシール部１９が司るように
する。この場合咽部１８はシリンダーカバーの板
厚程度の厚さに形成し、接続縁を弧状の湾曲線で
連接して補強すると共に、シール部１９はシール
面を凸状の半欠円状に形成し振動の吸収を極端に
咽部１８に集中させないように形成する。当該シ
ール材１６を使用したものではシリンダーカバー
をアンカーブラケツト３に固定した場合に、シー
ル部１９の凸状のシール面がダストカバー６と相
互圧力をもつて接触するようにする。 As shown in FIG. 3, the sealing material 16 is made of a rubber material and is formed into a substantially rectangular closed frame having the same shape as the end face shape of the cylinder cover main body in which the cylinder lower cover 4 and the cylinder upper cover 5 are combined and connected. . Both the cylinder lower cover 4 and the cylinder upper cover 5 vibrate during braking. In order to absorb this vibration and further enhance the sealing effect,
As shown in FIG. 3, the cross-sectional shape is approximately rectangular, and a locking groove 14 that opens on one end surface is provided, and at the same time, a throat portion 18 is provided on the end surface opposite to the locking groove 14.
The sealing material 16 is provided with a sealing part 19 connected to the throat part 18, so that the throat part 18 absorbs vibrations and the sealing function is performed by the sealing part 19. In this case, the throat part 18 is formed to have a thickness similar to that of the cylinder cover, and the connecting edges are connected and reinforced with an arcuate curved line, and the seal part 19 has a sealing surface formed in a convex semicircular shape. It is formed so that the absorption of vibrations is not excessively concentrated on the throat 18. In the case where the sealing material 16 is used, when the cylinder cover is fixed to the anchor bracket 3, the convex sealing surface of the sealing portion 19 is brought into contact with the dust cover 6 with mutual pressure.
この考案によれば、シリンダーカバー端面とダ
ストカバーとの間から泥水の浸入することがなく
なり、泥水によるシリンダーの機能劣化の問題を
皆無とすることが可能となる。また取付状態にお
けるシリンダーカバー本体部と、ダストカバーは
隔接して形成されるので、シリンダー本体部にシ
ール材の取付けが容易となる。さらにシール材は
咽部を設けてあるので、シリンダー本体部が振動
してもシリンダー本体部端縁部の変位は、この咽
部が吸収するので、シール部とダストカバーの接
触位置が動かずシール効果が高いドラムブレーキ
におけるシリンダーカバーの提供が可能となる。 According to this invention, it is possible to prevent muddy water from entering between the end face of the cylinder cover and the dust cover, and to completely eliminate the problem of functional deterioration of the cylinder due to muddy water. Furthermore, since the cylinder cover main body and the dust cover are formed in a spaced relationship in the attached state, it becomes easy to attach the sealing material to the cylinder main body. In addition, the seal material has a throat, so even if the cylinder body vibrates, this throat absorbs the displacement of the end edge of the cylinder body, so the contact position between the seal and the dust cover does not move and the seal is sealed. It becomes possible to provide a highly effective cylinder cover for drum brakes.
第１図は従来例におけるドラムブレーキの一部
を欠如した断面説明図、第２図はこの考案に係る
シリンダーカバー取付を示す断面説明図、第３図
はシール材の断面図である。
符号の説明、１……シリンダー本体、２……シ
リンダーブラケツト、３……アンカーブラケツ
ト、４……シリンダー下部カバー、５……シリン
ダー上部カバー、６……ダストカバー、７，８…
…ボルト、９……接続縁、１０，１１，１００，
１１０……端縁部、１４……係止溝、１６……シ
ール材、１７……シール突起、１８……咽部、１
９……シール部。
FIG. 1 is an explanatory cross-sectional view of a conventional drum brake with a part thereof removed, FIG. 2 is an explanatory cross-sectional view showing how a cylinder cover is attached according to this invention, and FIG. 3 is a cross-sectional view of a sealing material. Explanation of symbols: 1... Cylinder body, 2... Cylinder bracket, 3... Anchor bracket, 4... Cylinder lower cover, 5... Cylinder upper cover, 6... Dust cover, 7, 8...
...Bolt, 9... Connection edge, 10, 11, 100,
110... Edge portion, 14... Locking groove, 16... Seal material, 17... Seal protrusion, 18... Throat, 1
9...Seal part.
Claims (1)
肉箱形のシリンダーカバーを有するドラムブレー
キにおける該シリンダーカバーにおいて、シリン
ダーブラケツト２とアンカーブラケツト３で挟接
しアンカーブラケツト３に固定されるシリンダー
下部カバー４と、シリンダー本体１に固定される
シリンダー上部カバー５を接続縁９でタイトに接
合して箱状に形成し、当該接続縁９と対向するシ
リンダー下部カバー４の端縁部１１０およびシリ
ンダー上部カバー５の端縁部１００をダストカバ
ー６と隔接間隔を設けて形成したシリンダーカバ
ー本体部と、矩形断面形状を有し、一方の端面に
開口する、シリンダー本体部の端縁部１００およ
び端縁部１１０を挿嵌し、端縁部１００および端
縁部１１０の板厚さより小さい開口巾に形成した
係止溝１４と、当該係止溝１４と反対方向の他方
端面に突出して連接し、巾細く形成した咽部１８
と、当該咽部１８に連接して咽部１８より巾太く
形成し端面にダストカバー６と当接して密着する
凸状に形成したシール部１９を一体に形成したシ
ール材１６とを設けてなることを特徴とするドラ
ムブレーキにおけるシリンダーカバー。 In the cylinder cover of a drum brake having a thin-walled box-shaped cylinder cover that protects the cylinder for expanding the inside of the brake shoe, the cylinder lower cover 4 is sandwiched between the cylinder bracket 2 and the anchor bracket 3 and fixed to the anchor bracket 3; The cylinder upper cover 5 fixed to the main body 1 is tightly joined at the connecting edge 9 to form a box shape, and the edge 110 of the cylinder lower cover 4 and the edge of the cylinder upper cover 5 facing the connecting edge 9 are The cylinder cover main body is formed such that the part 100 is spaced apart from the dust cover 6, and the end edge 100 and end edge 110 of the cylinder main body have a rectangular cross-sectional shape and are open at one end surface. A locking groove 14 that is fitted and formed with an opening width smaller than the plate thickness of the edge portion 100 and the edge portion 110, and a narrow throat that protrudes and connects to the other end surface in the opposite direction to the locking groove 14. Part 18
and a sealing material 16 that is integrally formed with a convex sealing part 19 that is connected to the throat part 18 and is wider than the throat part 18 and that is formed in a convex shape that comes into close contact with the dust cover 6 on the end surface. A cylinder cover for a drum brake characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18369782U JPS5988528U (en) | 1982-12-06 | 1982-12-06 | Cylinder cover in drum brake |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18369782U JPS5988528U (en) | 1982-12-06 | 1982-12-06 | Cylinder cover in drum brake |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5988528U JPS5988528U (en) | 1984-06-15 |
| JPH02500Y2 true JPH02500Y2 (en) | 1990-01-09 |
Family
ID=30397503
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18369782U Granted JPS5988528U (en) | 1982-12-06 | 1982-12-06 | Cylinder cover in drum brake |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5988528U (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0543305Y2 (en) * | 1989-06-01 | 1993-11-01 |
-
1982
- 1982-12-06 JP JP18369782U patent/JPS5988528U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5988528U (en) | 1984-06-15 |
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