JPS6455434A - Duo-servo type drum brake - Google Patents
Duo-servo type drum brakeInfo
- Publication number
- JPS6455434A JPS6455434A JP21256487A JP21256487A JPS6455434A JP S6455434 A JPS6455434 A JP S6455434A JP 21256487 A JP21256487 A JP 21256487A JP 21256487 A JP21256487 A JP 21256487A JP S6455434 A JPS6455434 A JP S6455434A
- Authority
- JP
- Japan
- Prior art keywords
- shoes
- brake
- switch
- vehicle
- turn
- 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
- Regulating Braking Force (AREA)
- Braking Arrangements (AREA)
Abstract
PURPOSE:To start/stop a vehicle smoothly on an uphill road by providing a switch switchable corresponding to displacement of a pair of brake shoes based on change of functioning direction of brake reaction on the wheel cylinder. CONSTITUTION:When a vehicle stops on a hill, counter-Rd rotary force is produced in a drum friction engaging with a pair of shoes 3, 4 through function of gravity and the shoes 3, 4 function respectively as secondary and primary shoes to turn a switch 14 ON through a reaction transmission member 10 and an anchor pin 9 so as to turn a brake switch 26 ON thus switching a solenoid valve 23 to position B through a control circuit 25 and continuing brake function even upon release of brake pedal 16. When the vehicle is started, rotary force in Rd direction is produced in the drum and the shoes 3, 4 function respectively as primary and secondary shoes to turn the switch 14 OFF so as to switch the solenoid valve 3 to position A thus releasing brake. Consequently, the vehicle can be started/stopped smoothly on uphill roads.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212564A JP2706724B2 (en) | 1987-08-26 | 1987-08-26 | Duo servo type drum brake |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62212564A JP2706724B2 (en) | 1987-08-26 | 1987-08-26 | Duo servo type drum brake |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS6455434A true JPS6455434A (en) | 1989-03-02 |
JP2706724B2 JP2706724B2 (en) | 1998-01-28 |
Family
ID=16624788
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62212564A Expired - Lifetime JP2706724B2 (en) | 1987-08-26 | 1987-08-26 | Duo servo type drum brake |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2706724B2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6290036B1 (en) * | 1998-05-12 | 2001-09-18 | Akebono Brake Industry Co., Ltd. | Drum brake device |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4914869A (en) * | 1972-06-03 | 1974-02-08 | ||
JPS61247550A (en) * | 1985-04-25 | 1986-11-04 | Fuji Heavy Ind Ltd | Brake device |
-
1987
- 1987-08-26 JP JP62212564A patent/JP2706724B2/en not_active Expired - Lifetime
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4914869A (en) * | 1972-06-03 | 1974-02-08 | ||
JPS61247550A (en) * | 1985-04-25 | 1986-11-04 | Fuji Heavy Ind Ltd | Brake device |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6290036B1 (en) * | 1998-05-12 | 2001-09-18 | Akebono Brake Industry Co., Ltd. | Drum brake device |
Also Published As
Publication number | Publication date |
---|---|
JP2706724B2 (en) | 1998-01-28 |
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