JPS5697639A - Drum brake apparatus - Google Patents

Drum brake apparatus

Info

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
Application number
JP17291579A
Other languages
Japanese (ja)
Other versions
JPS6154971B2 (en
Inventor
Ikuo Ogata
Toshio Ono
Yoshio Suzuki
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aisin Takaoka Co Ltd
Original Assignee
Takaoka Industrial Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Takaoka Industrial Co Ltd filed Critical Takaoka Industrial Co Ltd
Priority to JP17291579A priority Critical patent/JPS5697639A/en
Publication of JPS5697639A publication Critical patent/JPS5697639A/en
Publication of JPS6154971B2 publication Critical patent/JPS6154971B2/ja
Granted legal-status Critical Current

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
JP17291579A 1979-12-28 1979-12-28 Drum brake apparatus Granted JPS5697639A (en)

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)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62117335U (en) * 1986-01-17 1987-07-25

Cited By (1)

* Cited by examiner, † Cited by third party
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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