• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    Dispositif d'assistance hydraulique comprenant un boî- ier (10) renfermant un premier et un deuxième éléments coulissants (18, 20) disposés en ligne, le premier élément 18) étant déplaçable sous l'effet du déplacement d'une tige ie poussée (34) et le deuxième élément étant déplaçable par 'intermédiaire d'une liaison hydrostatique, à chaque élé- nent (18, 20) étant associé un moyen de valve (36, 46) dans un circuit hydraulique respectif entre une source de fluide sous pression et un circuit de freinage (I, II) respectif, carac- érisé en ce que le premier et le deuxième élément (18, 20) constituent chacun un piston coulissant dans un alésage (14) du boîtier (10) et renfermant chacun un ensemble de clapet 26,40; 36,46) commandé chacun par un poussoir (30,44), le poussoir (30) du premier ensemble de clapet (26, 36) étant actionné par la tige de poussée (34) et le poussoir (44) du deuxième ensemble de clapet (40, 46) étant actionné par la iaison hydrostatique entre les deux pistons (28, 20).
    公开号:SU1491327A3
    申请号:SU853844126
    申请日:1985-01-29
    公开日:1989-06-30
    发明作者:Сове Жан-Поль；Рикар Кристиан；Леврэ Ролан
    申请人:Сосьете Аноним Д.Б.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to dual-circuit braking systems of hydrodynamic and hydrostatic action,
    The purpose of the invention is to increase reliability.
    The drawing shows a hydraulic amplifier, a longitudinal section.
    The hydraulic amplifier includes a housing 1 on which a dual reservoir 2 of the working fluid is mounted.
    The housing 1 has a drilling 3, which is closed at the end with a locking element A, B and drilling 3, which are mounted slidably with the first 5 and second 6 pistons, which limit the first pressure cavity 7. A second pressure cavity 8 is formed between the second piston 6 and the locking element A. The piston 5 comprises a plunger 9, which has a ball non-return valve 10 that is moved by a pusher 11 mounted slidably in the plunger 9. The plunger 9 also has an annular valve 12. The plunger 11 is connected by a spring 13 to a pushing rod 14, which is connected to a vehicle brake pedal (not shown). In addition, the piston 5 has an inlet valve 15 that is moved by a rod 9y 16 under the action of the movement of the plunger 9.
    The piston 6 includes a plunger 17, equipped with a valve 18, moved by the pusher 19, which is installed slidable in the plunger 17. In addition, the plunger 6 has an inlet valve 20, moved by a rod 21 under the action of the plunger 17.
    Case 1 has two inlets 22 and 23, each of which contains a check valve, corresponding to | 24 and 25. The valves are designed to be connected to a source of high pressure working fluid. The housing is also equipped with two outlet connections 26 and 27, each of which is connected to the corresponding brake circuit A and B.
    The amplifier works as follows; at once. The force applied from the brake pedal to the pushing rod 14 is transmitted by means of the spring 13 to the pusher 11, which moves to the left (according to the drawing) and closes the valve 10. Plunger 9 moves
    0
    five
    0
    five
    0
    five
    0
    five
    0
    relative to piston 5 and opens inlet valve 15 through rod 16. Opening valve 15 allows pressurized fluid to pass from inlet manifold 22 through channel 28 and drill 29 into valve seat 15 to cavity 7 and manifold 26. Increasing pressure in circuit A causes reverse the piston 9, which is in equilibrium with the spring 13. Increasing the pressure in the cavity 7 also causes the pusher 19 to move and, accordingly, close the valve 18 and move the plunger 17 to the left. Moving the plunger 17 relative to the piston 6 causes the valve 20 to open by means of the rod 21. Opening the valve 28 allows the pressurized fluid to pass from the inlet 23 through the channel 30 and drill 31, made in the valve seat 20, to the cavity 8 in which the working fluid pressure increases to a pressure balance between circuits A and B. When the brake pedal is lowered, valves 10 and 18 are opened, which allows the working fluid to pass through channels 32 and 33 to reservoir 2.
    In case of failure of the sources of working fluid under pressure
    for both circuits when acting on the brake pedal
    a pen-shank 14 causes the valve 10 to close and the valve 15 opens. Since the source of working fluid under pressure no longer exists, the plunger U moves to the left beyond the equilibrium position of the valve 15 until the chamber 34 is isolated from the reservoir 2 by an annular valve 12 the surface 35 of the piston 5. After isolating the chamber 34, the pushing rod 14 hits a hydraulic wall that prevents the spring 13 from compressing and causes the piston 5 to move. In circuit A, isolated from its reservoir and pressure fluid by closing valve 24, pressure increases, which causes valve 18 to close, valve 20 to open and plunger 17 to move to piston 6. Then piston 6 moves to the left, as valve 25 is closed in circuit B pressure is melting. After the brake pedal is released, the springs 36 and 37 return the pistons 5 and 6 back.
    51
    The occurrence of 1 иг g (1 h of the working section of the floor by lavating circuit A when the brake pedal is pressed causes closing of valves 10 and 24, opening of valve 15 and closing of ring valve 12 on surface 35, Thus, in circuit A, pressure increases due to displacement of piston 5. This an increase in pressure in circuit A causes normal operation of circuit B, the brake pressure is the same in both circuits, but lower than the normal pressure with hydrodynamic action.
    In the event of a malfunction of the source of working fluid under pressure of circuit B, circuit A functions normally with spring 13. In a malfunctioning circuit B, the pressure increases under the effect of piston 6 sweeping after closing valves 18 and 25 and opening valve 20. The braking pressure in both circuits is the same and is equivalent to pressure at normal operation.
    In the event of a malfunction of the brake circuit A, the plunger 9 moves until the ring valve 12 closes on the surface 35. Then the piston 5 moves to the stop. Spring 13 is neutralized by closing valve 12.
    In the event of a malfunction of the brake circuit B circuit A functions normally. Since the pressure in the cavity 8 is zero, the piston 6 moves up to the stop in the locking element 4 I
    权利要求:
    Claims (1)
    [1]
    Invention Formula
    A hydraulic amplifier comprising a housing in which two pistons coaxially mounted, slidably mounted with return springs and having integrated valve assemblies, coaxially mounted, with channels for connecting to the housing wall
    ,
    knots to the reservoir with the working fluid and to the source of the working fluid under pressure, the area formed between the first and second pistons, to the first brake circuit, and the end cavity behind the second piston to the second brake circuit, the valve assembly of the first piston includes an inlet valve for connecting a source of working fluid under pressure to the cavity between the pistons, an inlet valve control plunger installed slidably in the axial bore of the first piston and provided with a channel for Communication of the cavity between the pistons with the reservoir and the ball exhaust valve
    0 for closing the channel in the plunger, mounted coaxially with the plunger and the inlet valve in contact with the pusher, resiliently connected to an additional piston connected to a push rod, characterized in that, in order to ensure reliability, the valve assembly of the second piston is identical to the valve the first piston assembly, the channel in
    The 3Q plunger of each valve assembly is made stepwise, with a larger diameter step formed by a nest, in KOToj) OM there is a ball exhaust valve and a pusher in contact with the exhaust valve, the first piston is made from the side of the push rod with an extended stub part, in which an additional a piston bounding the chamber in fluid communication with the reservoir through an annular valve formed on the shoulder of the plunger end protruding into this chamber, and at the end of the valve assembly pusher In the second piston, a hydraulic control cavity is formed in communication with the cavity between the first and second pistons.
    35
    40
    45
    类似技术:
    公开号 | 公开日 | 专利标题
    US4621498A|1986-11-11|Tandem master cylinder
    GB2156459A|1985-10-09|Servo braking system
    US3938333A|1976-02-17|Master cylinder
    SU1491327A3|1989-06-30|Hydraulic booster
    US4598955A|1986-07-08|Slip control system master cylinder with piston sleeve
    US5111661A|1992-05-12|Dual master cylinder
    GB2088981A|1982-06-16|Brake master cylinder
    US3514163A|1970-05-26|Power brake system
    US4667466A|1987-05-26|Quick fill type master cylinder
    US4671168A|1987-06-09|Single actuator tandem brake pressure control valve
    US4651528A|1987-03-24|Hydraulic amplifier for braking system
    US4027922A|1977-06-07|Hydraulic servo-brake arrangement for double circuit brakes
    SU1389672A3|1988-04-15|Master brake cylinder
    EP0112009B1|1986-11-05|A master cylinder assembly for a vehicle hydraulic braking system
    US4798052A|1989-01-17|Constant-clearance brake piston system with braking pressure intensifier
    GB2135412A|1984-08-30|Master cylinder for hydraulic brake systems of vehicles
    US3703079A|1972-11-21|Hydraulic actuating systems
    US4998950A|1991-03-12|Center compensating master cylinder
    US4706460A|1987-11-17|Hydraulic brake valve capable of operating as conventional master cylinder when brake pressure source fails
    EP0402355A1|1990-12-19|Primary pressure-balanced proportioning valve.
    JP2681796B2|1997-11-26|Fluid booster device for brake circuit
    US4783965A|1988-11-15|Hydraulic booster
    AU598262B2|1990-06-21|Hydraulic booster device
    US3657887A|1972-04-25|Power assisted brake
    US6227628B1|2001-05-08|Service brake for a vehicle
    同族专利:
    公开号 | 公开日
    AU562079B2|1987-05-28|
    AU3818385A|1985-08-08|
    FR2558785B1|1986-05-30|
    DE3560231D1|1987-07-16|
    ES539972A0|1986-04-01|
    BR8500341A|1985-09-10|
    EP0151069A3|1985-09-18|
    ES8606155A1|1986-04-01|
    US4709550A|1987-12-01|
    EP0151069A2|1985-08-07|
    FR2558785A1|1985-08-02|
    JPS60185664A|1985-09-21|
    EP0151069B1|1987-06-10|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2799140A|1955-03-29|1957-07-16|Bendix Aviat Corp|Power boost master cylinder|
    GB1229925A|1968-06-14|1971-04-28|
    DE2164590C3|1971-12-24|1979-03-29|Alfred Teves Gmbh, 6000 Frankfurt|Master cylinder for a dual-circuit brake system for vehicles, in particular motor vehicles|
    JPS5520897B2|1973-04-17|1980-06-05|
    GB1416632A|1973-05-02|1975-12-03|Girling Ltd|Control vavle assemblies for vehicle hydraulic braking systems|
    JPS50138268A|1974-04-19|1975-11-04|
    US4441319A|1982-09-01|1984-04-10|The Bendix Corporation|Brake booster|
    DE3301042A1|1983-01-14|1984-07-19|Robert Bosch Gmbh, 7000 Stuttgart|HYDRAULIC TWO-CIRCUIT TANDEM MAIN BRAKE CYLINDER|US4671168A|1985-02-27|1987-06-09|Bendix France|Single actuator tandem brake pressure control valve|
    FR2593131B1|1986-01-22|1990-11-30|Bendix France|HYDRAULIC ASSISTANCE DEVICE.|
    FR2599323B1|1986-05-28|1988-08-05|Bendix France|HYDRAULIC ASSISTANCE DEVICE.|
    DE3627902A1|1986-08-16|1988-02-18|Teves Gmbh Alfred|HYDRAULIC POWER AMPLIFIER|
    FR2614591A1|1987-04-28|1988-11-04|Bendix France|HYDRAULIC BRAKE DEVICE FOR VEHICLE|
    JP2740221B2|1988-12-28|1998-04-15|曙ブレーキ工業株式会社|Brake fluid pressure control device|
    US6012288A|1995-12-20|2000-01-11|Kelsey-Hayes Company|Master cylinder having radially formed end plugs and press-fit caged spring assembly pin|
    US5603217A|1996-03-13|1997-02-18|General Motors Corporation|Compliant master cylinder|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8401439A|FR2558785B1|1984-01-31|1984-01-31|HYDRAULIC ASSISTANCE DEVICE|
    [返回顶部]