• 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:
    The device incorporates an actuating piston (6) in tandem with a master cylinder piston (7) both defining first (8) and second (9) braking pressure chambers. A valve mechanism (34), in line with the control valve mechanism (12) of the device, is controlled by a mode selector piston (31) exposed to the actuating pressure coming from the source of fluid under pressure (25) so as normally to isolate the first chamber (8) of the braking circuit (I) joined to the working chamber (5). In the case of failure of the pressure source, the braking circuit (I) is joined to the primary chamber (8).
    公开号:SU1340577A3
    申请号:SU853858829
    申请日:1985-02-21
    公开日:1987-09-23
    发明作者:Кервагорэ Жильбер
    申请人:Сосьете Аноним Дба (Фирма)；
    IPC主号:
    专利说明:

    ten
    There is a cavity 3 at the level of the ball isolating valve. A channel 24 for communicating with the source 25 of a pressurized fluid is also made in the wall of the housing 1 and connects an annular groove 26 of the sleeve 11 connected to the high pressure chamber 27, to which the recess for the high pressure valve ball 13 is connected.
    In the working chamber 5 is placed a lever. mechanism 28, which is used to move on the choice of the working piston 6 and the pusher 18. The lever mechanism 28
    The invention relates to a transport engineering, in particular to dual-circuit hydraulic brake systems of automobiles.
    The purpose of the invention is to increase reliability.
     FIG. 1 shows a device, a longitudinal section; Fig, 2 - part of the device, a longitudinal section.
    The device is connected to the brake circuits A and B and includes a housing 1 having means 2 for attaching it to the vehicle chassis and two cylindrical
    parallel cavities 3 and 4, which are connected by a 15, are driven by a rod 29, which exits with a working chamber 5, which is located outside the working chamber, at the end of the housing 1, closed with a lash. In the cylindrical cavity 4 there are located (one after another the first working piston 6, the rear end of which goes into the working cavity 5, and the second piston 7. Both these pistons slide inside the cavity 4 and have sealing seals. The piston 7 and the end of the piston 6 opposite to the working chamber 5, form the first pressure chamber 8 on the one hand, and on the other side of the piston 7 between its end and the bottom of the cavity 4 a second pressure chamber 9 is formed, which has access to the brake circuit B through channel 0.
    In the cylindrical cavity 3 there is a sleeve 1 1,. having inside a row of coaxially communicating with each other a prog. (a high pressure chamber 27, transitions in which elements are placed, goes into chamber 38 bounded by the rear wall of cavity 3 and communicating via channel 39 made in housing 1 with chamber B between pistons 6 and 7.
    In the chamber 38, a pushing element 40 is located, terminating with a thrust 41, abutting the ball 34 under the pressure of the spring 42, with its second end resting on the bottom of the chamber 38. in the box body is connected to line I. A portion of the cavity 30 between the ball seat 36 and the switching piston 31 is communicated externally with an annular peripheral groove 45
    through a seal in the housing casing, and connected to the brake pedal of the car (not shown).
    A high-pressure chamber 27 is formed at the rear end of the inner cavity 30 of the sleeve 11, in which the 1st piston 31 slides hermetically slid, on which the spring-25 to 32 rests, pressing the high-pressure valve ball 13 to its seat 14. The diverting piston 31 is opposite to ball 13. continued in the form of a rod 33, acting on the valve ball 34, located in the intermediate broadening 35 of the internal cavity 30, having two saddles 36 and 37 opposite each other. The cavity 30 at its end is opposite to 30
    forming the valve control unit 12, consisting of one high pressure valve, the ball 13 of which is spring pressed against its seat 14, made in the transverse, partition wall of the sleeve 11. The ball 13 can be retracted from its seat with the tip of the sleeve 15, sliding inside the sleeve 11 and again closing the isolating valve, the ball 16 of which is in a normal position from its seat 17 in the sleeve 5, but can be moved by the pusher 18, hermetically slipped w 1 m in the lid 19 of the sleeve 11.
    The sleeve 11 has an outside annular groove 20, which inside the sleeve is connected to the cavity in which the sleeve 15 slides, and from the outside to the channel 21 made in the housing 1 between the cavities 3 and 4 and communicates 1ms with the working chamber 5. The hole 22 serving connection to tank 23, done in the wall of housing 1 and connecting
    45
    50
    55
    bushings I1, through the continuation of the channel 21 communicating with the working chamber 5,
    During normal operation of the device, the pressure on the pusher 29 is transmitted to the pusher 18, which presses the ball 16 to its saddle 17 and then moves
    There is a cavity 3 at the level of the ball isolating valve. A channel 24 for communicating with the source 25 of a pressurized fluid is also made in the wall of the housing 1 and connects an annular groove 26 of the sleeve 11 connected to the high pressure chamber 27, to which the recess for the high pressure valve ball 13 is connected.
    In the working chamber 5 is placed a lever. mechanism 28, which is used to move on the choice of the working piston 6 and the pusher 18. The lever mechanism 28
    driven by a rod 29 withdrawn from the working chamber to the outside
    A high pressure chamber 27 passes into chamber 38, bounded by the rear wall of cavity 3 and communicating via channel 39, made in housing 1, with chamber B between pistons 6 and 7.
    through a seal in the housing casing, and connected to the brake pedal of the car (not shown).
    A high-pressure chamber 27 is formed at the rear end of the inner cavity 30 of the sleeve 11, in which the switching piston 1Y 31 slides hermetically, which rests on the spring 32, pressing the high-pressure valve ball 13 to its seat 14. The switching piston 31 is opposite to the ball 13. continued in the form of a rod 33, acting on the valve ball 34, located in the intermediate broadening 35 of the internal cavity 30, having two opposite seats 36 and 37. The cavity 30 is at its end opposite to
    55
    bushings I1, through the continuation of the channel 21 communicating with the working chamber 5,
    During normal operation of the device, the pressure on the pusher 29 is transmitted to the pusher 18, which presses the ball 16 to its saddle 17 and then moves
    the sleeve 15 relative to the sleeve 11 in order to retract the ball 13 from its seat 14 and to allow liquid from the high pressure chamber 27 through the groove 20 and channel 21 to enter the working chamber 5, without moving the working norm 6 to the left (in the figure) and squeezing wherein the fluid in the first chamber 8 and transferring the pressure generated thereby to the piston 7 to obtain a braking pressure in circuit B. In this case, the auxiliary modulated pressure is transmitted to circuit A through channel 21 to the central part
    35
    cavity, its intermediate expansion) 5 ment isolating valve in the form of a sub- to the annular groove 43 and to the channel 44.
    The pressure in the high-pressure chamber 27 moves the switching piston 31 to the left (in the figure) to the ball 34, pressing it to its saddle 37 and 20 overcoming the resistance of the spring 42, thus isolating the chamber 8 from the channel 44, but maintaining a constant connection through the channel 21 and the auxiliary modulated pressure 25 is lower than the pressure of the pressure source and, therefore, does not allow the ball 34 and the switching piston 31 to move to the right, despite the force exerted on it by the preloaded spring 42. Chambers 8 do not communicate during normal operation with a circuit A and is used to generate brake pressure in the chamber 9 and for transmitting this pressure to the circuit B.
    In the event of failure of the source 25 of the pressurized fluid supply, the switching piston 31 does not press down the ball 34 with the necessary force, which, because of this, ceases to press against its left saddle 37, and under the influence of the spring 42 presses against the saddle 36. With this new mutual position of the elements device connection between channel 44 (with circuit A) and channel 21 is interrupted, and channel 44 is thus connected to chamber 8 through chamber 38 and channel 39. Under these conditions, pistons 6 and 7 are manually moved by a rod 29, - 8yupts m in this case as the primary and The secondary pistons of the main cylinder are installed in tandem.
    In order for braking
    This scheme could have been sufficiently penetrated, and the valve assembly was equipped with a long one, the chambers 8 and 9 with a normally switching piston installed in the initial position of the device communicating between the spring and the ball were additionally connected to the reservoirs R and R. (Fig. 1). saddle under his ball, and add 40
    45
    50
    spring ball, spring-loaded sleeve with a stepped axial bore, the edge of which is formed by the isolating valve seat, high-pressure valve ball in contact with the end of the sleeve and pressed to the saddle on the sleeve located between it and the additional valve ball having a saddle on the sleeve from the side in the body , the sleeve and the sleeve are made of radial channels, a joint cavity between the sleeve and the high pressure valve, connected by a channel in the housing with the working chamber, through an insulating valve with a reservoir, polo The high pressure, separated by a high pressure valve from the previous cavity, is communicated by radial channels in the sleeve and the housing with the hydraulic pump, in the second cylindrical housing cavity is mounted with the possibility of sliding the working piston bounding the pressure chamber connected to one of the brake circuits one
    In the working chamber there is a lever mechanism, kinematically connecting the pusher and the working piston, which is located between itself and the driving rod, the axial working piston, characterized in that, in order to increase the reliability of the device, it is provided with a housing located in the second cylindrical cavity. the second working piston separating the second pressure chamber from the first pressure chamber from the end wall of the housing, communicated with the second brake circuit

    Formula
    4 3 o
    bratis
    A device for supplying brake fluid under pressure to a dual-circuit brake system comprising a housing with two parallel cylindrical cavities open into the working chamber in communication with the first brake circuit, while in the first cylindrical cavity a valve assembly consisting of a sleeve is placed , in the axial stepped channel of which sequentially, coaxially placed the pusher with the seal, the locking element
    ) 5 ment isolating valve in the form of under-
    20 25 d
    40
    45
    0
    spring ball, spring-loaded sleeve with a stepped axial bore, the edge of which is formed by the isolating valve seat, high-pressure valve ball in contact with the end of the sleeve and pressed to the saddle on the sleeve located between it and the additional valve ball having a saddle on the sleeve from the side in the body , the sleeve and the sleeve are made of radial channels, a joint cavity between the sleeve and the high pressure valve, connected by a channel in the housing with the working chamber, through an insulating valve with a reservoir, polo The high pressure, separated by a high pressure valve from the previous cavity, is communicated by radial channels in the sleeve and the housing with the hydraulic pump, in the second cylindrical housing cavity is mounted with the possibility of sliding the working piston bounding the pressure chamber connected to one of the brake circuits one
    In the working chamber there is a lever mechanism, kinematically connecting the pusher and the working piston, which is located between itself and the driving rod, the axial working piston, characterized in that, in order to increase the reliability of the device, it is provided with a housing located in the second cylindrical cavity. the second working piston separating the second pressure chamber from the first pressure chamber from the end wall of the housing, communicated with the second brake contour pushing element, pressed from the end wall of the housing and abutting an additional valve ball in contact with the switching piston on the other side, with a channel in the housing connecting the first pressure chamber through the passage in the seat of the additional valve from the side of the pushing element.
    radial channels made in the bushing and a channel in the housing with the first brake circuit; passage in the seat of the additional valve from the switching piston side communicates through the radial channels in the sleeve with the channel, communicating a cavity between the high pressure valve and the sleeve with the working chamber.
    2 3736 J 3530 33 2 3J 27 W 22 hO 3
    ed
    ;;
    FIG. 2
    Editor P. Geresi
    Compiled by S. Makarov
    Tehred L. Serdyukova Proofreader A. Zimokosov
    Order 4354/58 Circulation 598 Subscription
    VNISHI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    权利要求:
    Claims (1)
    [1]
    A device for supplying brake fluid under pressure to a dual-brake system containing a housing with two parallel cylindrical cavities open to the working chamber in communication with the first brake circuit, while in the first cylindrical cavity there is a valve assembly consisting of a sleeve in an axial step the channel of which, consequently, is pushed coaxially with a pusher with a seal, a shut-off element of an insulating valve in the form of a spring-loaded ball, a spring-loaded sleeve with a stepped axial hole, of which the seat of the insulating valve is formed, the ball of the high pressure valve in contact with the end of the sleeve and pressed against the seat on the sleeve by a spring located between it and the ball of the additional valve having a seat on the sleeve from the spring side, radial channels are made in the housing, sleeve and sleeve, communicating the cavity between the sleeve and the high-pressure valve, connected by a channel in the housing to the working chamber, through an isolation valve with a reservoir, a high-pressure cavity, separated by a high-pressure valve from the previous cavities of the cavity, communicated by radial channels in the sleeve and the housing with a hydraulic pump, a working piston is installed in the second cylindrical cavity of the housing, which limits the pressure chamber in the housing on one side and communicates with one of the brake circuits, and the lever mechanism is located in the working chamber, kinematically connecting the pusher and the working piston with each other and with a drive rod coaxial to the working piston, characterized in that, in order to increase the reliability of the device, it is equipped with a cylinder -symmetric cavity housing the second working piston separates from the first pressure chamber is the second pressure chamber from the side of the end wall of the housing communicating with the second brake circuit and the valve unit is equipped with a switching piston mounted between the spring and ball dopolnitelschayutsya with reservoirs R, and R 2 (FIG. one).
    valve, made with a second seat under its ball, and an additional pushing element., pressed by a spring from the end wall of the housing and abutting against the ball of the additional valve, contacting on the other hand with the switching piston, and in the housing there is a channel connecting the first pressure chamber through passage in the saddle of the additional valve from the side of the Weapon element, radial channels made in the sleeve, and the channel in the housing with the first brake circuit, I switch the passage in the saddle of the additional valve from the side The main piston is communicated through radial channels in the sleeve with a channel communicating the cavity between the high pressure valve and the sleeve with the working chamber.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1340577A3|1987-09-23|Device for feeding brake fluid under pressure to two-circuit braking system
    US4341076A|1982-07-27|Hydraulic brake booster
    US4819996A|1989-04-11|Automotive vehicle braking device
    US4305624A|1981-12-15|Hydraulic brake actuation device for motor vehicles equipped with an antiskid system
    US4621498A|1986-11-11|Tandem master cylinder
    US4028891A|1977-06-14|Booster brake unit
    US4550567A|1985-11-05|Tandem master cylinder for hydraulically operated vehicular brakes
    US4642990A|1987-02-17|Master cylinder and oil-hydraulic booster assembly
    US4340257A|1982-07-20|Hydraulic brake system
    US4653814A|1987-03-31|Power brake booster for a hydraulic vehicle brake system
    US4490977A|1985-01-01|Hydraulic brake booster
    US4441319A|1984-04-10|Brake booster
    US4754605A|1988-07-05|Hydraulic brake system
    US4072085A|1978-02-07|Combined hydraulic and vacuum booster
    US3793829A|1974-02-26|Hydraulic booster with pedal travel control
    US4137718A|1979-02-06|Power brake unit
    KR890003574B1|1989-09-25|Loss stroke reducing apparatus for hydraulic servomechanism
    KR930010317B1|1993-10-16|Hydrauric brake booster
    US3978670A|1976-09-07|Multi-circuit brake installation for vehicles
    US4550566A|1985-11-05|Brake master cylinder
    US4703623A|1987-11-03|Double-piston master cylinder with central booster-driven piston driving surrounding low pressure piston
    US4285199A|1981-08-25|Hydraulic brake booster
    US4007664A|1977-02-15|Hydraulic booster
    US5042254A|1991-08-27|Tandem master cylinder with second piston anchored at bottom of bore
    SU1400500A3|1988-05-30|Hydraulic booster for brake system
    同族专利:
    公开号 | 公开日
    US4641497A|1987-02-10|
    GB8502435D0|1985-03-06|
    BR8500842A|1985-10-15|
    GB2154680A|1985-09-11|
    AU3904885A|1985-09-05|
    GB2154680B|1987-08-19|
    AU564084B2|1987-07-30|
    JPS60193752A|1985-10-02|
    IT1183383B|1987-10-22|
    FR2559724A1|1985-08-23|
    IT8519580D0|1985-02-20|
    FR2559724B1|1990-06-29|
    ES540595A0|1986-04-16|
    DE3506087A1|1985-08-22|
    DE3506087C2|1995-11-16|
    JPH0468180B2|1992-10-30|
    ES8606153A1|1986-04-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB580283A|1944-04-28|1946-09-03|Automotive Prod Co Ltd|Improvements in or relating to liquid pressure servo-motor devices|
    US3719044A|1971-08-18|1973-03-06|Bendix Corp|Hybrid brake booster control valve|
    US3907375A|1971-09-13|1975-09-23|Bendix Corp|Hydraulically actuated adaptive braking system using a single fluid|
    US3877227A|1974-05-03|1975-04-15|Gen Motors Corp|Supported line pressure power brake assembly|
    FR2332445B1|1975-11-21|1978-04-14|Dba|
    JPS5839098B2|1977-05-31|1983-08-27|Toyota Motor Co Ltd|
    FR2457202B1|1979-05-21|1983-11-18|Ferodo Sa|
    DE3110028A1|1981-03-16|1982-09-30|Robert Bosch Gmbh, 7000 Stuttgart|Dual circuit brake booster|
    DE3136975C2|1981-09-17|1991-06-06|Alfred Teves Gmbh, 6000 Frankfurt, De|
    DE3210735C2|1981-12-18|1992-01-02|Robert Bosch Gmbh, 7000 Stuttgart, De|
    DE3301042A1|1983-01-14|1984-07-19|Robert Bosch Gmbh, 7000 Stuttgart|HYDRAULIC TWO-CIRCUIT TANDEM MAIN BRAKE CYLINDER|US4625623A|1984-06-29|1986-12-02|Allied Corporation|Brake booster|
    DE3600924A1|1986-01-15|1987-07-16|Teves Gmbh Alfred|HYDRAULIC POWER AMPLIFIER|
    DE3627147C2|1986-08-11|1997-09-18|Teves Gmbh Alfred|Brake pressure sensor for a hydraulic motor vehicle brake system|
    JPH055725Y2|1987-02-06|1993-02-15|
    FR2614591A1|1987-04-28|1988-11-04|Bendix France|HYDRAULIC BRAKE DEVICE FOR VEHICLE|
    JPS644559A|1987-06-25|1989-01-09|Toyota Motor Corp|Liquid pressure brake unit|
    DE3725791C1|1987-08-04|1989-02-02|Daimler-Benz Ag, 7000 Stuttgart, De|
    US5394701A|1994-02-25|1995-03-07|Deere & Company|Brake valve with prefill chamber unloading valve|
    FR2725175B1|1994-10-04|1996-10-31|Alliedsignal Europ Services|HYDRAULIC BRAKE ASSIST MOTOR WITH MODIFIED INPUT CHARACTERISTIC|
    US6561596B2|2001-06-28|2003-05-13|Robert Bosch Corporation|Brake booster|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    FR8402654A|FR2559724B1|1984-02-22|1984-02-22|BRAKE PRESSURE GENERATING DEVICE FOR DOUBLE-CIRCUIT BRAKING SYSTEM|
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