JPS6038948U - Foil cylinder for vehicle drum brakes - Google Patents
Foil cylinder for vehicle drum brakesInfo
- Publication number
- JPS6038948U JPS6038948U JP13166783U JP13166783U JPS6038948U JP S6038948 U JPS6038948 U JP S6038948U JP 13166783 U JP13166783 U JP 13166783U JP 13166783 U JP13166783 U JP 13166783U JP S6038948 U JPS6038948 U JP S6038948U
- Authority
- JP
- Japan
- Prior art keywords
- pressure chamber
- piston
- gear portion
- clutch surface
- cylinder
- 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.)
- Granted
Links
Landscapes
- Braking Arrangements (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
図面は本考案に係る車両用ドラムブレーキのホイルシリ
ンダを示すもので、第１図は、要部の断面正面図、第２
図は第１図の■−■断面図、第３図は第２図の■−■断
面図である。
１はバックプレート、２はホイルシリンダ、３はブレー
キシュー、４はシリンダ本体、４ａはシリンダ孔、４ｂ
は液圧室、５はピストン、６は小 −径部、７はツ
バ部、８はカップ溝、９はピストンカップ、１０はさぐ
り孔部、１１は連通孔、１２はアジャストナツト、１３
は当接面、１４はスプリングリテーナ、１５はスプリン
グ、１６は切欠き部、１７はアジャストボルト、１７ａ
は多条ねじ部、１７ｂはクラッチ部、１８はシリンダ小
径部、１９はクラッチ面、２０はシール部材、２１はギ
ヤ部、２２は大気圧室、２３は工具の挿入孔、２３ａは
凹部、２４はグロメット、２５は工具、２５ａは工具先
端凸部、２５ｂはギヤである。The drawings show a wheel cylinder for a vehicle drum brake according to the present invention.
The figure is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. 3 is a cross-sectional view taken along the line ■-■ in FIG. 1 is the back plate, 2 is the foil cylinder, 3 is the brake shoe, 4 is the cylinder body, 4a is the cylinder hole, 4b
is a hydraulic chamber, 5 is a piston, 6 is a small diameter part, 7 is a collar part, 8 is a cup groove, 9 is a piston cup, 10 is a search hole part, 11 is a communication hole, 12 is an adjustment nut, 13
14 is a contact surface, 14 is a spring retainer, 15 is a spring, 16 is a notch, 17 is an adjustment bolt, 17a
17b is a multi-start threaded portion, 17b is a clutch portion, 18 is a cylinder small diameter portion, 19 is a clutch surface, 20 is a seal member, 21 is a gear portion, 22 is an atmospheric pressure chamber, 23 is a tool insertion hole, 23a is a recessed portion, 24 25 is a grommet, 25 is a tool, 25a is a protrusion at the tip of the tool, and 25b is a gear.
Claims (1)
とにより画成された液圧室に、多条ねじ螺合した、アジ
ャストナツトとアジャストボルトとを配置し、このアジ
ャストボルトのクラッチ面を前記対向部のクラッチ面に
当接し、一方前記アジャストナツトを前記ピストンに保
持せしめ所定値以上の制動間隙が生じたとき、アジャス
トボルトを螺動してピストンを前進せしめる液圧作動式
ブレーキにおける制動間隙自動調整装置を備えた車両用
ドラムブレーキのホイルシリンダにおいて、前記アジャ
ストボルトの後端にギヤ部を延設し、該ギヤ部を前記対
向部のクラッチ面奥方に形成した大気圧室に配置せしめ
、該大気圧室に前記ギヤ部と係合する工具の挿入孔を穿
設したことを特徴とする車両用ドラムブレーキのホイル
シリンダ。An adjustment nut and an adjustment bolt screwed together with a multi-thread screw are arranged in a hydraulic pressure chamber defined by a piston slidably inserted into the cylinder and its opposing part, and the clutch surface of the adjustment bolt is A braking gap in a hydraulically actuated brake that abuts against the clutch surface of the opposing part, while holding the adjusting nut on the piston, and when a braking gap of more than a predetermined value occurs, the adjusting bolt is screwed to advance the piston. In a wheel cylinder for a vehicle drum brake equipped with an automatic adjustment device, a gear portion is provided extending from the rear end of the adjustment bolt, and the gear portion is disposed in an atmospheric pressure chamber formed behind the clutch surface of the opposing portion, A wheel cylinder for a drum brake for a vehicle, characterized in that the atmospheric pressure chamber is provided with an insertion hole for a tool that engages with the gear portion.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13166783U JPS6038948U (en) | 1983-08-25 | 1983-08-25 | Foil cylinder for vehicle drum brakes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13166783U JPS6038948U (en) | 1983-08-25 | 1983-08-25 | Foil cylinder for vehicle drum brakes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6038948U true JPS6038948U (en) | 1985-03-18 |
| JPS633475Y2 JPS633475Y2 (en) | 1988-01-28 |
Family
ID=30297594
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13166783U Granted JPS6038948U (en) | 1983-08-25 | 1983-08-25 | Foil cylinder for vehicle drum brakes |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6038948U (en) |
-
1983
- 1983-08-25 JP JP13166783U patent/JPS6038948U/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS633475Y2 (en) | 1988-01-28 |
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