JPS5697639A - Drum brake apparatus - Google Patents
Drum brake apparatusInfo
- Publication number
- JPS5697639A JPS5697639A JP17291579A JP17291579A JPS5697639A JP S5697639 A JPS5697639 A JP S5697639A JP 17291579 A JP17291579 A JP 17291579A JP 17291579 A JP17291579 A JP 17291579A JP S5697639 A JPS5697639 A JP S5697639A
- Authority
- JP
- Japan
- Prior art keywords
- brake
- braking member
- shaped groove
- ring
- shaped
- 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
Abstract
PURPOSE: To eliminate the need for the gap regulation for a drum brake apparatus and reduce the friction load as well as to improve the cooling efficiency by making the end surface of a brake durm and an annular V-shaped braking member fit with each other through a V-shaped groove having a given angle forming the V thereof.
CONSTITUTION: The end surface of a brake drum 2 and a braking member 6 are fitted with each other through a V-shaped groove 5. When a brake pedal (not shown) is stepped on and oil pressure is applied to a wheel cylider 15, a piston 11 is pressed causing, through a brake ring 7, the braking member 6 to be pressed against the V-shaped groove 5, so that a large brake power is produced. When the pedal is released, the oil pressure applied to the wheel cylinder 15 disappears and consequently the piston 11, together with the ring, is returned by the drawing action of sealing member 13 and 14, so that the braking member 6 separates from the V-shaped groove 5, which is formed so that (the angle formed by the V of the V-shaped grove)/2>(the friction angle equivalent to the friction factor between the V-shaped groove and the braking member). Thereby, because as the pressure surface wears out the ring 7 moves rightward, it becomes unnecessary to regulate the gap between the brake drum and the braking member, and because the braking area is wide the wear rate is made smaller.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17291579A JPS5697639A (en) | 1979-12-28 | 1979-12-28 | Drum brake apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP17291579A JPS5697639A (en) | 1979-12-28 | 1979-12-28 | Drum brake apparatus |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5697639A true JPS5697639A (en) | 1981-08-06 |
JPS6154971B2 JPS6154971B2 (en) | 1986-11-26 |
Family
ID=15950699
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP17291579A Granted JPS5697639A (en) | 1979-12-28 | 1979-12-28 | Drum brake apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5697639A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62117335U (en) * | 1986-01-17 | 1987-07-25 |
-
1979
- 1979-12-28 JP JP17291579A patent/JPS5697639A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS62117335U (en) * | 1986-01-17 | 1987-07-25 |
Also Published As
Publication number | Publication date |
---|---|
JPS6154971B2 (en) | 1986-11-26 |
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