GB1144567A - Improvements in and relating to servo motors for vehicle brake systems - Google Patents
Improvements in and relating to servo motors for vehicle brake systemsInfo
- Publication number
- GB1144567A GB1144567A GB13345/65A GB1334565A GB1144567A GB 1144567 A GB1144567 A GB 1144567A GB 13345/65 A GB13345/65 A GB 13345/65A GB 1334565 A GB1334565 A GB 1334565A GB 1144567 A GB1144567 A GB 1144567A
- Authority
- GB
- United Kingdom
- Prior art keywords
- diaphragm
- plate
- valve
- deflector plate
- seat
- 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
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/569—Vacuum systems indirect, i.e. vacuum booster units characterised by piston details, e.g. construction, mounting of diaphragm
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60T—VEHICLE BRAKE CONTROL SYSTEMS OR PARTS THEREOF; BRAKE CONTROL SYSTEMS OR PARTS THEREOF, IN GENERAL; ARRANGEMENT OF BRAKING ELEMENTS ON VEHICLES IN GENERAL; PORTABLE DEVICES FOR PREVENTING UNWANTED MOVEMENT OF VEHICLES; VEHICLE MODIFICATIONS TO FACILITATE COOLING OF BRAKES
- B60T13/00—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems
- B60T13/10—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release
- B60T13/24—Transmitting braking action from initiating means to ultimate brake actuator with power assistance or drive; Brake systems incorporating such transmitting means, e.g. air-pressure brake systems with fluid assistance, drive, or release the fluid being gaseous
- B60T13/46—Vacuum systems
- B60T13/52—Vacuum systems indirect, i.e. vacuum booster units
- B60T13/57—Vacuum systems indirect, i.e. vacuum booster units characterised by constructional features of control valves
Landscapes
- Engineering & Computer Science (AREA)
- Transportation (AREA)
- Mechanical Engineering (AREA)
- Braking Systems And Boosters (AREA)
- Braking Arrangements (AREA)
- Regulating Braking Force (AREA)
Abstract
1,144,567. Brake servomotors; valves. GIRLING Ltd. 29 March, 1966 [30 March, 1965], No. 13345/65. Headings F2F and F2V. A control valve, particularly for a brake servomotor in which reaction or " feel " is applied to the control valve directly by a diaphragm 27 through the action of a deformable deflecting plate 28 such as is described in Specification 1,144,566, may be either manually or hydraulically operated, and comprises a valve seat member 58 including a pair of relatively stationary valve seats 60, 62 respectively circumscribing one and both of two passages in the member 58, and a common valve closure member 84 which is fitted to the deflector plate 28 such that, on deformation of the plate 28, it tilts correspondingly so as to pivot about one of the valve seats and thereby open the passage circumscribed by the other valve seat. In order that the plate 28 should deform in the desired manner, a dished plate 94 is secured on the output rod 92 of the servomotor, which as shown is of the vacuum suspended type, and presents an annular bead 96 at a position radially inward of the centre of pressure of the diaphragm 27 so that when the valve is operated, as shown by movement of a pedaloperated rod 80 acting on a block 74 to push in a stem 50 which carries the head 58, the inner portion of the deflector plate, which is composed of flexibly joined segments, initially moves forward, causing deformation of the deflector plate 28 and hence pivoting of the closure member 84 about the seat 62 to open air passage 106, circumscribed by seat 60, allowing atmospheric air to pass via a filter 78 and passages 75, 102 to passages 104 arranged in a ring between the seats 60 and 62 and hence to the power chamber 24 of the servomotor, but, as pressure builds up in the chamber 24, the deformation of the deflector plate is progressively reduced until the lap position shown (in which it is flat), is reached, a reaction force then being exerted on the stem 50 which is proportioned in accordance with the relative radii of the bead 96 and the centre of pressure of the diaphragm 27. On relaxation of the force applied to move the stem 50 inwardly, deformation of the deflector plate 28 in the opposite direction occurs, causing the closure member 84 to pivot about the seat 60 and open the passages 104 via openings 42 left between the segments of the deflector plate to the vacuum chamber 22, thus restoring the vacuum suspended condition. When the brake is fully released a thickened portion 26 of the diaphragm rests on a reentrant portion of the servomotor casing. The casing is formed of two portions 12, 14 between which the outer periphery of the diaphragm 27 is clamped, the inner periphery of the diaphragm being engaged in a groove in the head 58. Return springs 95 and 98 are provided, and the arrangement is such that on failure of the vacuum supply the head 100 of an extension 88 of the output shaft 92 can be engaged directly by the thrust block 74.
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB13345/65A GB1144567A (en) | 1965-03-30 | 1965-03-30 | Improvements in and relating to servo motors for vehicle brake systems |
SE17360/69A SE344441B (en) | 1965-03-30 | 1966-03-29 | |
SE4174/66A SE342418B (en) | 1965-03-30 | 1966-03-29 | |
ES0324931A ES324931A1 (en) | 1965-03-30 | 1966-03-30 | Improvements in servomotors or reinforcers of pressure of the brake system of a vehicle. (Machine-translation by Google Translate, not legally binding) |
DE19661550240D DE1550240B1 (en) | 1965-03-30 | 1966-03-30 | Valve, especially for brake boosters |
US55550166 US3316816A (en) | 1965-03-30 | 1966-06-06 | Servo motors for vehicle brake systems |
MY1971143A MY7100143A (en) | 1965-03-30 | 1971-12-31 | Improvements in and relating to servo motors for vehicle brake systems |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB13345/65A GB1144567A (en) | 1965-03-30 | 1965-03-30 | Improvements in and relating to servo motors for vehicle brake systems |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1144567A true GB1144567A (en) | 1969-03-05 |
Family
ID=10021268
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB13345/65A Expired GB1144567A (en) | 1965-03-30 | 1965-03-30 | Improvements in and relating to servo motors for vehicle brake systems |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE1550240B1 (en) |
ES (1) | ES324931A1 (en) |
GB (1) | GB1144567A (en) |
MY (1) | MY7100143A (en) |
SE (2) | SE342418B (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3807279A (en) * | 1970-11-12 | 1974-04-30 | Girling Ltd | Servo motors |
JPS5193092U (en) * | 1975-12-29 | 1976-07-26 | ||
DE2951372A1 (en) * | 1979-12-20 | 1981-07-02 | Alfred Teves Gmbh, 6000 Frankfurt | PNEUMATIC POWER AMPLIFIER |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US1921092A (en) * | 1931-03-23 | 1933-08-08 | New York Air Brake Co | Multiple-way valve |
GB721939A (en) * | 1952-12-04 | 1955-01-12 | United Dairies Wholesale Ltd | Improvements in or relating to safety valve for releasing both positive and negativeexcessive pressures |
FR1132251A (en) * | 1955-09-22 | 1957-03-07 | Renault | Reinforced rubber valve |
DE1085736B (en) * | 1956-07-23 | 1960-07-21 | Roger Charles Dubois | Solenoid valve for fluids of all pressure ranges |
DE1820611U (en) * | 1958-03-19 | 1960-10-27 | Bosch Gmbh Robert | PRESSURE MEDIUM VALVE, IN PARTICULAR COMPRESSED AIR BRAKE VALVE FOR VEHICLE BRAKES. |
-
1965
- 1965-03-30 GB GB13345/65A patent/GB1144567A/en not_active Expired
-
1966
- 1966-03-29 SE SE4174/66A patent/SE342418B/xx unknown
- 1966-03-29 SE SE17360/69A patent/SE344441B/xx unknown
- 1966-03-30 ES ES0324931A patent/ES324931A1/en not_active Expired
- 1966-03-30 DE DE19661550240D patent/DE1550240B1/en active Pending
-
1971
- 1971-12-31 MY MY1971143A patent/MY7100143A/en unknown
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3807279A (en) * | 1970-11-12 | 1974-04-30 | Girling Ltd | Servo motors |
JPS5193092U (en) * | 1975-12-29 | 1976-07-26 | ||
DE2951372A1 (en) * | 1979-12-20 | 1981-07-02 | Alfred Teves Gmbh, 6000 Frankfurt | PNEUMATIC POWER AMPLIFIER |
Also Published As
Publication number | Publication date |
---|---|
SE344441B (en) | 1972-04-17 |
ES324931A1 (en) | 1967-02-16 |
MY7100143A (en) | 1971-12-31 |
SE342418B (en) | 1972-02-07 |
DE1550240B1 (en) | 1971-04-15 |
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