• 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:
    1497054 Load responsive braking valves GIRLING Ltd 21 May 1975 [27 June 1974] 28674/74 Heading F2F A vehicle load responsive fluid pressure brake control valve comprises a normally-open proportioning or limiting valve 7 with a member 10 movable in response to a predetermined inlet pressure to limit or proportion the outlet pressure and means 8 responsive to the inlet pressure, opposed by a bias force when in use dependent on vehicle loading, to reduce the outlet pressure, by increasing the outlet volume, after the predetermined inlet pressure is attained. The means 8 in Fig. 1, comprises a bias spring 18 adjustable in load by a link 21 coupled to an axle and a piston 13 with a smaller head 14 subject to the inlet pressure and a larger head 16 which when moved to the right by the inlet pressure, increases the outlet volume thus reducing its pressure. In Fig. 3 the load sensing link 21 acts on both the pressure reducing means 8 as described above and on the limiting (or proportioning) valve member 9 to adjust its transition point as shown in Fig. 4, F<SP>1</SP>D and F<SP>11</SP>E representing the front/rear brake pressure characteristics for a laden and unladen vehicle respectively.
    公开号:SU852164A3
    申请号:SU752148776
    申请日:1975-06-27
    公开日:1981-07-30
    发明作者:Унтерберг Хартмут
    申请人:Гирлинг Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (54) PRESSURE REGULATOR FOR HYDRAULIC CAR BRAKE SYSTEM The invention relates to automobile brake systems. Closest to the present invention is a pressure regulator for a vehicle’s hydraulic brake system, containing a sensing element, load on the vehicle, and a housing with inlet and outlet channels for connecting respectively to the master brake cylinder and to the working brake dramas, and drilling is performed in the housing , which is valuable with the indicated channels, in which I is placed a normally open spring-loaded valve to limit the brake pressure C13. However, the well-known regulator has with ineffective when the car is unloaded. The purpose of the invention is to reduce the majestic brake pressure when the car is unobstructed. This goal is achieved in that an additional Noe through step drilling is carried out in the housing, in which two pistons of different diameters are placed connected to each other by a rod, while the indicated COORDINGS and additional drilling walls form a chamber connected to the output kangsh, the output of additional drilling the smaller piston is equipped with a fitting for connection to the master brake cylinder, and the larger piston is connected by means of an elastic element to a sensitive element perceiving Loading the car on. FIG. 1 isogrgyn the first embodiment of the proposed pressure regulator; in fig. 2 shows the dependence of the change in brake pressure on the rear wheels on the torus pressure on the front wheels; FIG. 3 - the second embodiment of the regulator; in fig. 4- dependence, similar to FIG. 2, when using the regulator of FIG. The regulator (Fig. 1) contains a housing. 1 with an input channel 2 and an output channel 3 for connecting the main line 4 with the master brake cylinder 5 and the working brake cylinders 6. In the stepwise drilling of the housing 1, a clamp 7 is installed to limit the brake pressure and the piston. Neva group 8. Valve 7 contains a rod 9 with a head 10, an engagement with it with an annular
    seat 11. The valve 7 is preloaded with a spring 12 of compression.
    Group 8 contains a rod 13 connected to a piston 14, located under pressure by a pressure transmitted through line 15 from a cylinder 5, and to a piston 16. The piston 14 has a smaller diameter than the piston 16. The chamber 17 between the pistons 14 and 16 communicates with channel 3. The piston 16 is compressed in the direction of the piston 14 by the spring 18 through the pusher 19. The force of the spring 18 depends on the movement of the lever 20, which is a sensitive element, perceived load on the car.
    . FIG. 2, curves A and B show the optimal dependencies, respectively, when the car is loaded and unloaded, line C shows the dependence in the absence of limitation and pressure reduction in the rear brakes, wheels, lines D and E are dependencies for the loaded and unloaded car using the regulator shown in . one.
    When the vehicle is loaded, the lever 20 compresses the spring 18, increasing the preload force. An increase in the inlet pressure causes the valve 7 to close (at the point F of the line D of Fig. 2), and the outlet pressure remains unchanged until the brake is released. The additional force on the rod 13 is of such magnitude that the sum of the forces acting on the piston 14 from the line 15 and the piston 16 does not cause the rod 13 to move.
    When the vehicle is unloaded, the magnitude of the force acting on the rod 13 from the side of the lever 20 decreases. After the valve 7 is closed and a further increase in the inlet pressure, acting on pore 14, occurs, the rod moves to the lever 20, which leads to an increase in the volume of the chamber 17 and, thus, the outlet pressure decreases along the line E.
    The regulator shown in FIG. basically similar to regulator.
    shown in FIG. 1, and differs only in that the lever 20 interacts with the spring 12 through the pusher 21.
    At the same time, the point that corresponds to the closing of the valve 7 varies depending on the vehicle load and, as follows from FIG. 4, valve 7 closes at point F with the vehicle loaded and at point F with the vehicle unloaded.
    权利要求:
    Claims (1)
    [1]
    1. For Japan Japan 48-36869, cl. 54B 47, pub. 1973.
    15
    п а 8 3
    2. 1 "
    t1
    类似技术:
    公开号 | 公开日 | 专利标题
    US3252740A|1966-05-24|Brake pressure proportioning device
    US4062597A|1977-12-13|Vehicle load sensing arrangements
    EP0067749A1|1982-12-22|Closed-center hydraulic servo apparatus
    US4598955A|1986-07-08|Slip control system master cylinder with piston sleeve
    GB1012775A|1965-12-08|Device for use on vehicles equipped with hydraulic brakes for varying the braking force on vehicle wheels dependently upon the wheel load
    SU852164A3|1981-07-30|Pressure control device for hydraulic car braking system
    US4462641A|1984-07-31|Deceleration sensing valve assembly for vehicle brake
    US4571944A|1986-02-25|Blow-off valve in a quick take-up master cylinder
    US4564244A|1986-01-14|Pressure control device
    US2924306A|1960-02-09|Brake proportioning valve
    US4116493A|1978-09-26|Brake pressure control valve
    US3695730A|1972-10-03|Proportioning device
    US4179164A|1979-12-18|Braking pressure control valve unit
    GB1496511A|1977-12-30|Fluid pressure braking systems for vehicles
    US3790221A|1974-02-05|Brake proportioning valve with blend back
    US3706477A|1972-12-19|Proportioning device
    US4080006A|1978-03-21|Braking pressure control valve unit
    US4334712A|1982-06-15|Braking compensator dependent on the deceleration
    US3768876A|1973-10-30|Proportioning valve with load sensing blend back
    US4790414A|1988-12-13|Railway deceleration controller for brake
    US4008925A|1977-02-22|Valve devices for use in liquid pressure braking systems of vehicles
    US4239296A|1980-12-16|Control valve assemblies
    US4444436A|1984-04-24|Hydraulic pressure control valve
    GB1508614A|1978-04-26|Fluid pressure-medium brake systems for motor vehicles
    GB2097080A|1982-10-27|Deceleration-sensing pressure proportioning or limiting valve assembly for vehicle braking systems
    同族专利:
    公开号 | 公开日
    JPS5117782A|1976-02-12|
    PL95508B1|1977-10-31|
    US3989312A|1976-11-02|
    IN144773B|1978-07-01|
    GB1497054A|1978-01-05|
    JPS568784B2|1981-02-25|
    DE2528146A1|1976-01-15|
    BR7504024A|1976-07-06|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    FR1285197A|1960-03-31|1962-02-16|Ford France|Advanced braking system for motor vehicles|
    US3163473A|1961-12-18|1964-12-29|Kelsey Hayes Co|Brake pressure proportioning device|
    GB1048049A|1963-08-20|1966-11-09|Girling Ltd|Improvements in hydraulic braking systems for vehicles|
    US3314235A|1965-07-26|1967-04-18|Kelsey Hayes Co|Brake pressure control valve|
    GB1222818A|1967-10-24|1971-02-17|Girling Ltd|Improvements in or relating to brake pressure control valves|
    US3731981A|1971-05-21|1973-05-08|Wagner Electric Corp|Control valve and system|
    US3848932A|1973-07-02|1974-11-19|Bendix Corp|Vehicle braking systems having height sensing proportioning valve|JPS6140559Y2|1981-02-20|1986-11-19|
    DE3614797C2|1986-05-02|1995-06-14|Teves Gmbh Alfred|Pressure control device|
    US5169212A|1990-12-21|1992-12-08|Ford Motor Company|Reversible proportioning valve|
    FR2861677B1|2003-10-29|2006-02-10|Beringer Sa|PRESSURE LIMITING DEVICE FOR A HYDRAULIC BRAKE CIRCUIT OF A VEHICLE|
    CN106864446B|2015-12-11|2019-11-22|北汽福田汽车股份有限公司|Inductive proportional valve, brake fluid system and vehicle|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB2867474A|GB1497054A|1974-06-27|1974-06-27|Control valve assemblies|
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