• 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:
    In a master cylinder assembly of the kind in which transfer chambers in pedal-operated master cylinders are connected by a transfer passage, each master cylinder has a transfer valve which is normally open and which is movable into a closed position to isolate the transfer chamber of that master cylinder from a reservoir in response to an increase in pressure in the transfer chamber when the other master cylinder is operated on its own.
    公开号:SU934903A3
    申请号:SU772531004
    申请日:1977-10-12
    公开日:1982-06-07
    发明作者:Эрнст Эдвардс Рой；Джордж Прайс Энтони；Роберт Рис Джон
    申请人:Гирлинг Лимитед /Фирма/；
    IPC主号:
    专利说明:

    The master cylinder assembly includes two master cylinders arranged in a row in parallel, with each master cylinder being actuated by its own pedal. The two main cylinders are identical in design, and each contains a cortus 1, equipped with a longitudinal bore 2, in which a piston 3 is installed, having seals 4 n 5 located at a certain distance from each other. The piston 3 is connected at its rear end partially spherical head 6 on pedal actuated pedal 7. Limiter for head 6 is formed by annular narrow sleeve 8 held in fixed position by clamping ring or spring ring lock 9 disposed in ring howl groove in the bore 2.
    The axial bore 1O in the piston 3 is in communication through the radial openings 11 with the coupling 12 in the circumferential surface of the piston 3 passing between the seals 4 and 5. The length of the recess 12 in each master cylinder is such that in all axial positions of the piston 3, it is connected through the opening 11 and the radial opening nepexiycKHcafo of channel 13 in the wall of housing 1 with a corresponding notch 12 in another master cylinder. Hole 1O and an annular head & 12 unit together define an overflow chamber.
    The sleeve 14, which includes an elastically deformable ring seal 15, is retained in the opening 16, scanned at the front end of the opening 10 by means of an annular locking ring 17, and the spacer sleeve 18 is clamped between the sealing ring 19 and the hanger 2O at the step diameter between the opening 10 and hole 16. The minimum internal diameter of the sleeve 18 is larger than the diameter of the seal ring 15, which therefore protrudes radially inward relative to the sleeve 18. In the construction shown, the sleeve 18 forms a conical KGA beveled counterbore substantially equal length, which extend inwardly from opposite K01SCHOV sleeve and connected to the cylindrical portion, which is substantially equality boiling from both ends of the sleeve 18. On the other hand the inner surface 18 Gilzem mozhot be axially convex.
    The front end of the opening 2 is in communication with the brake fluid reservoir 21 through the recovery opening 22 in the housing 1, which is controlled by a recovery valve containing an annular head 23 for contacting the valve seat 24 surrounding the opening 22. The head 23 is carried by the front end axially extending a rod 25, the opposite end of which protrudes through the holes 26 in the sleeve 14 and is equipped with a head 27 which is in contact with the inner end of the sleeve 14. The head 27 and the rod 25 are made with a cut-out 28 to ensure and liquids cheryuz sleeve 14.
    In another embodiment, the general reservoir 21 may be replaced by two independent reservoirs for two master cylinders such that each has an independent supply of fluid. The glass 29 is slidably mounted on the head 27 and protrudes into the hole 10. The glass 29, the spacer sleeve 18 and the sealing ring 15 define the bypass valve. The cup 29 is connected to the head 27 by means of a spring ring lock 30, which is located in the inner radial groove 31 of the cup 29 and is received by the outer radial groove 32 in the head 27. The groove 32 is limited in length to allow limited axial movement of the cup 29 relative to the head 27. Normally working For compression, the spring 33 pushes the cup 29 away from the head 27 so that the edge of the groove 31, which is closer to the sleeve 14, and the edge of the groove 32, which is removed from the sleeve 14, interlock with the spring-ring lock ZO, and the skirt ana 29 extends through the spacer sleeve 18 to a position near the sealing ring 15. In this position, the annular throttle channel 34 between the cup 29 and the sleeve 18 defines a limited flow path between the overflow chamber and the compression chamber 35 between the piston 3 and the end of the housing 1 remote from the pedal. The compression chamber is adapted to be coupled to the brake actuator acting on the wheel through the radial hole 36.
    权利要求:
    Claims (2)
    [1]
    The portion 37 of the stem 25, which transfers the head, is directed in a sliding manner through the screwed element 38, adjacent to the shoulder 39 on a step in diameter in the hole 2 and forming a support return spring 40 for one end, the opposite end of which is connected to the support surface 41 pistons 3. A lightly loaded spring 42, the preload of which is substantially less than the preload of the pressure spring 33, operates between the closed end of the axial bore 10 and the outer shoulder 43 at the proximal end of the cup 29 To move the valve 23 to contact the valve seat 24, when the piston 3 moves in the direction of application of the gun, In the position shown in the drawing in which the piston 3 is held in the fully retracted position by the compression spring 4O, the recovery valve and the bypass valve are open. Thus, the compression chamber 35 is in free communication with the reservoir, but in a limited manner with the overflow chamber through the channel 34. When the piston moves forward in the opening 2 by the action of the brake pedal with a corresponding compression of the spring 4O, a slight forward movement is sufficient to cause the head 23 to connect to the valve seat 24 to isolate the compression chamber 35 from the valve. From this point on, further movement of the piston 3 in the same direction creates pressure in the fluid and in the compression chamber 35, which is supplied to the brake actuator acting on the wheel through the openings 36, and during this movement the seal ring 15 and the sleeve 18 move from the cup 29 to increase the effective zone of the channel 34 to facilitate the transfer of pressure and pressure to the overflow chamber. When both master cylinders are operated simultaneously, the pressures in the two overflow chambers AND, as a result, the pressures in the pressure chambers are equalized through the connection of the overflow channel 13 to compensate for the differential wear of the friction gaskets. However, if only one master cylinder is actuated, then the increased fluid pressure in the overflow chamber of the acting master cylinder acts on the bottom of the cup 29 of the inactive master cylinder to move it axially relative to the head 27 before joining the seal ring 15 for knocking off this overflow chamber from the compression chamber of this GPA & Cylinder. This prevents the return of pressurized fluid to the reservoir through a recovery valve that is open. In the non-operating position, both overflow valves are open to allow limited flow between the overflow chambers and the reservoir for the hydraulic expansion of the fluid. The application of the proposed site provides an increase in the brake system as a whole. Claim 1. The main brake cylinder assembly of the vehicle, the contents of the body with two parallel holes in it - in which the pistons of the main brake cylinders are placed, forming with the housing the compression chambers communicated by means of recuperative valves to the reservoir interconnected bypass chambers, each of which is in communication with a corresponding compression chamber by means of a spring-loaded bypass valve placed in the axial bore of the corresponding piston annogo Recuperatively valve stem, characterized in that, in order to simplify the structure of each closure element of the overflow valve is designed as a nozzle disposed at an end of said rod packs 1 passing in axial. The piston hole, the seat of said valve is in the form of an annular seal fixed to a sleeve located in said axial hole of the piston on the side of the compression chamber, while a sleeve is formed in the axial hole of the piston, forming an annular throttle channel with the locking element of the overflow valve.
    [2]
    2. The knot of claim 1, of which is that each glass is spring-loaded relative to the stem and, moreover, a more rigid spring is installed on the side of the stem. Sources of information taken into account in the examination 1. USSR Patent No. 302877, cl. B 6O T 11/18, 1971.
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    类似技术:
    公开号 | 公开日 | 专利标题
    US4939901A|1990-07-10|Tandem master cylinder with piston stops and central valves
    SU448631A1|1974-10-30|The master cylinder of the hydraulic brake system of the car
    SU934903A3|1982-06-07|Master brake cylinder of vehicle
    US4006593A|1977-02-08|Master cylinder assembly for a vehicle hydraulic braking system
    US4132073A|1979-01-02|Master cylinder assembly
    US4566277A|1986-01-28|Pressurized fluid supplying arrangement particularly a master cylinder of a clutch
    US4707989A|1987-11-24|Master cylinder
    US4078386A|1978-03-14|Master cylinder assembly
    US4557110A|1985-12-10|Master cylinder assembly for a vehicle braking system
    JPH05238378A|1993-09-17|Spring caging for master cylinder
    US3060691A|1962-10-30|Hydraulic master cylinder
    US4534172A|1985-08-13|Master cylinder assembly for a vehicle hydraulic braking system
    GB2141196A|1984-12-12|Vehicle dual circuit hydraulic brake pressure control unit
    US4553395A|1985-11-19|Master cylinder assembly for a vehicle braking system
    EP0049969B1|1985-06-26|A master cylinder assembly for a vehicle hydraulic braking system
    KR880002711A|1988-05-10|Quick filling valve mechanism for master cylinder
    US4539892A|1985-09-10|Hydraulic brake booster
    SU443506A1|1974-09-15|Master cylinder for vehicle hydraulic brake system
    US4516470A|1985-05-14|Unbalanced hydraulic amplifier valve assembly
    US4114377A|1978-09-19|Master cylinder assembly
    US4744219A|1988-05-17|Master cylinder
    US4757835A|1988-07-19|Change-over valve for hydraulic walking mine-roof supports
    US4296604A|1981-10-27|Tandem master cylinder
    GB2129520A|1984-05-16|A master cylinder assembly for a vehicle hydraulic braking system
    PL79690B3|1975-06-30|Dual master cylinder assembly[gb1352060a]
    同族专利:
    公开号 | 公开日
    BR7706791A|1978-07-11|
    PL201465A1|1978-06-05|
    DE2745514A1|1978-04-13|
    US4231224A|1980-11-04|
    GB1591028A|1981-06-10|
    JPS5348176A|1978-05-01|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3421320A|1967-05-24|1969-01-14|Lambert & Brake Corp|Hydraulic booster-equalizer valve assembly|
    GB1301111A|1969-05-08|1972-12-29|Girling Ltd|Two pedal hydraulic braking system|
    GB1381407A|1972-07-07|1975-01-22|Girling Ltd|Master cylinder assemblies for vehicle hydraulic braking systems|
    US3875850A|1972-08-30|1975-04-08|Applied Power Inc|Double-acting lift cylinder with integral velocity fuses|
    GB1472136A|1974-06-08|1977-05-04|Girling Ltd|Master cylinder assembly for a vehicle hydraulic braking system|US4488405A|1980-10-02|1984-12-18|Lucas Industries Limited|Master cylinder assembly for a vehicle hydraulic braking system|
    JPS57108466U|1980-12-18|1982-07-05|
    GB2108607B|1981-10-27|1985-02-13|Lucas Industries Ltd|Tractor hydraulic braking system|
    DE3202572C2|1982-01-27|1991-07-04|Alfred Teves Gmbh, 6000 Frankfurt, De|
    US4534172A|1982-11-02|1985-08-13|Lucas Industries Public Limited Company|Master cylinder assembly for a vehicle hydraulic braking system|
    DE3321729C2|1983-06-16|1990-05-23|Alfred Teves Gmbh, 6000 Frankfurt, De|
    FR2577627B1|1985-02-20|1988-10-14|Bendix France|CONTROL DEVICE FOR DOUBLE MASTER CYLINDER|
    GB8710273D0|1987-04-30|1987-06-03|Lucas Ind Plc|Master cylinder assembly|
    ES2347394B1|2006-12-05|2011-08-17|Frenos Iruña, S.A.L.|PRESSURE APPLICATOR FOR HYDRAULIC CIRCUITS.|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB42254/76A|GB1591028A|1976-10-12|1976-10-12|Master cylinder assemblies for vehicle hydraulic braking systems|
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