• 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:
    1,211,047. Fluid pressure brakes. GIRLING Ltd. 15 May, 1969 [21 June, 1968], No. 29600/68. Heading F2F. A two-pedal hydraulic braking system in which brakes on opposite sides of the vehicle are applied by fluid from separate master cylinders each actuated by its own pedal has the two master cylinders connected by a transfer port or passage 26 which is isolated from the pressure spaces of both cylinders by normally closed transfer valves 33 which are adapted to be opened by axial movement of the pistons in the brake applying direction and which are located in axial passages 23. The valves 33 are opened by the rearwardly extending stems 38 of recuperation valves 37 against the action of springs 34 when each piston is moved in the brake applying direction. However if the piston of the other cylinder has not been advanced the transfer valve in the piston of that cylinder remains closed and there can be no transfer of fluid between cylinders unless the pistons are advanced simultaneously. The cylinders are formed by parallel bores 10, 11 in a common body 12 incorporating an integral reservoir 13.
    公开号:SU923357A3
    申请号:SU691332081
    申请日:1969-05-26
    公开日:1982-04-23
    发明作者:Уолкер Стенли
    申请人:Гирлинг Лимитед (Инофирма)；
    IPC主号:
    专利说明:

    The invention relates to braking systems designed for land vehicles.
    Closest to the proposed one is a two-pedal brake 5 hydraulic system for machines containing power cylinders with pistons, each of which is connected to a pusher, while the compression chambers of the power cylinders are in communication with the brake cylinders and with a common make-up reservoir, and through the bypass channel, blocked by normally closed bypass valves, opening during the working stroke of the pistons, and they are interconnected [13 ·
    However, the known device has a complex structure and insufficient reliability due to the fact that when the bypass valves are opened, radial forces arise, causing the pistons to warp in the power cylinders.
    The purpose of the invention is to simplify the design and increase its reliability;
    This goal is achieved by the fact that in a two-pedal brake hydraulic system for machines containing power cylinders with pistons, each of which is connected to a pusher, while the compression chambers of the power cylinders are in communication with the brake cylinders and with a common make-up reservoir, and through the bypass channel, it is closed normally closed bypass valves that open during the working stroke of the pistons, they are also communicated with each other, normally closed bypass valves are placed in the axial holes of the pistons.
    In addition, the bypass channel is constantly in communication with the axial passage of each piston on the side of the bypass valve remote from the compression chamber. Power cylinders and make-up tank have a common housing.
    The drawing shows the proposed system, section.
    Two power cylinders are parallel holes 1 and 2, made in the housing 3, which also includes a make-up tank 4 with holes 5 and 6, communicating the cavity of the tank with the cavities of the power cylinders.
    The design of the pistons in the two power cylinders is identical.
    The piston 7 is attached at its rear end with a hemispherical head 8 to the pusher 9 "driven by a brake pedal. The limiter for the hemispherical head is an annular clutch 10, secured by a spring ring or an annular lock 11. The piston is held in the rear position by a return spring 12 located in front of the cylinder.
    An axial bore 13 is made in the piston, which, through radial holes 14, communicates with an annular recess 15 on the outer surface of the piston. The length of the undercut is such that in all positions of the piston it communicates through the transverse bypass channel 16 with a corresponding undercut on the piston of the other cylinder. The piston has O-rings 17 and 18 in front and behind the undercut.
    The plug 19 is located in the front end of the piston and has an axial bore 20 and a seal 21 .. The rear end of this plug is equipped with a seat for the bypass valve 22, which is normally closed by a spring 23. The front end of the plug has a head 24, which is adjacent to the front end of the piston and has a diametrical slot.
    The front end of the piston is cut into a cone and has a relatively small radial wall thickness, and after the plug is inserted, the finger 25 is bent into the slot of the head, fixing the plug in the required position.
    The axial hole in the front end of the cylinder is controlled by a valve 26 having a stem 27, on which a thickening or shoulder 28 is made, and a cup 29 is put on the front end of the piston. The front part interacts with the stem shoulder 28. On the back of the glass there is a flange 30, in which the spring 12 abuts. In the normal position between
    923357 4 with a rear end face of the rod 27 and the bypass valve 22 there is a guaranteed clearance.
    At the extreme rear position of the piston 5, the engagement of the cup 29 with the shoulder of the stem 27 keeps the valve 26 open, so that the compression chamber in the cylinder in front of the piston and the brake cylinders fed through the outlet 1B of the hole 31 are in communication with the make-up tank 4.
    When the piston is advanced by the action of the brake pedal, a small forward movement is sufficient to close valve 26 and create pressure in front of the piston. With further movement of the piston, the rod 27 will open the bypass valve 22, overcoming the action of the spring 23, and the compression chamber will be in communication with the annular recess 15 and with the bypass channel 16.
    However, if the piston of the other cylinder is not advanced, the bypass valve in the piston of this cylinder remains closed and does not allow fluid to pass between the compression chambers of the cylinders until the pistons of both cylinders are advanced forward by the simultaneous action of two 30 brake pedals. In this case, the working pressure transmitted to different brake cylinders is the same, which will ensure equal wear of the friction elements of the brake system 35 of the machine.
    Execution unit in a common housing, as well as placement of the pistons in the axial opening relief valves to simplify constructions 40 tion and increase its reliability, which is especially important for land vehicles both in terms of their operation, and traffic safety.
    权利要求:
    Claims (3)
    [1]
    3 The drawing shows the proposed system, section. Two power cylinders are parallel openings 1 and 2 made in housing 3, which also includes a feed tank C with openings 5 and 6, which connect the reservoir cavity to the cavities of the power cylinders. The design of the pistons in the two-cylinder power is identical. The piston 7 is attached at its rear end with a hemispherical head 8 to the pusher 9. operated by the brake pedal. The restrictor for the hemispherical head is an annular clutch 10 secured by a spring ring or an annular lock 11. The piston is held in the rear position by a return spring 12 located in the front part of the cylinder. An axial bore 13 is formed in the piston, which is connected via radial bores 1 to an annular recess 15 on the outer surface of the piston. The length of the undercut is such that in all positions of the piston it is connected through the transverse bypass channel 16 with the corresponding undercut on the piston of the Other cylinder. The piston has o-rings 17 and 18 in front of and behind the undercut. The plug 19 is located in front of the piston face and has an axial bore 20 and a seal 21. The rear end of this plug is equipped with a seat for the relief valve 22, which is normally closed by a spring 23. The front end of the plug has a head 2 which is attached to the front end of the piston and has diametrical cut The front end of the piston is cut into a cone and has a relatively small radial wall thickness, and after the plug is inserted, the finger 25 is bent into the head cut, locking the plug in the desired position. An axial bore in the front end of the cylinder is controlled by a valve 26 having a stem 27 on which a thickening or collar 28 is made, and a cup 29, which interacts with the front collar 28 of the stem, is attached to the front end of the piston. A flange 30 is formed on the back of the cup, and the spring 12 abuts against it. In the normal position between the rear end of the rod 27 and the relief valve 22 there is a guaranteed clearance. At the rearmost position of the piston, the engagement of the cup 29 with the collar of the stem 27 keeps the valve 26 open, so that the compression chamber in the cylinder in front of the piston and the brake cylinders fed through the exhaust ports 31 are in communication with the make-up tank 4. When the piston is advanced by the action of the brake pedal, move forward a little to close valve 2b and create pressure before pori; Upon further movement of the piston, the rod 27 will open the bypass valve 22, overcoming the action of the spring 23, and the compression chamber will communicate with the annular notch 15 and with the bypass channel 16. However, if the piston of the other cylinder is not moved forward, the bypass valve in the piston of this cylinder will remain closed and will not let the fluid between the cylinder compression chambers until the pistons of both cylinders are advanced by the simultaneous action of two brake pedals. In this case, the working pressure transmitted to different brake cylinders is the same, which will ensure the same wear of the friction elements of the braking system of the machine. The implementation of the device in a common housing, as well as the placement of pressure valves in the axial orifices of the pistons, allows to simplify the design and increase its reliability, which is especially important for land vehicles both in terms of their operation and traffic safety. Claim 1. Double-pedal brake hydraulic system for machines containing power cylinders with pistons, each of which is connected to the pusher, while the compression chambers of the power cylinders are connected to brake cylinders and to a common make-up tank, and through a bypass channel blocked by normally closed by-pass cylinders. valves that open when the piston stroke is working, 59 are also communicated with each other, characterized in that, in order to simplify the design and increase its reliability, normally closed bypass The valves are located in the axial bore of the pistons.
    [2]
    2. Pop-up system 1, characterized in that the bypass channel is permanently connected to the axial passage of each piston on the side of the relief valve remote from the compression chamber.
    [3]
    3. The system according to claim 1, characterized in that the power cylinders and the make-up tank have a common body. Sources of information taken into account in the examination 1. US Patent If 288718, cl. 31-172, published. 1959.
    类似技术:
    公开号 | 公开日 | 专利标题
    SU923357A3|1982-04-23|Two-pedal breaking system for vehicles
    US4086770A|1978-05-02|Dual circuit quick take-up master cylinder
    GB1301111A|1972-12-29|Two pedal hydraulic braking system
    EP2154039B1|2013-01-09|Twin Master Cylinder Assembly
    US3979153A|1976-09-07|Master cylinder assemblies for vehicle hydraulic braking systems
    GB2211567A|1989-07-05|Tandem master cylinder for hydraulic brake systems of automotive vehicles
    US3938333A|1976-02-17|Master cylinder
    SU302877A1|TWO-PEDAL BRAKE HYDRAULIC SYSTEM FOR MACHINES
    US4006593A|1977-02-08|Master cylinder assembly for a vehicle hydraulic braking system
    GB1322226A|1973-07-04|Hydraulic brake pressure control valve assembly
    US4196592A|1980-04-08|Hydraulic brake booster
    US4123908A|1978-11-07|Hydraulic servo assisted braking system
    EP0130297B1|1987-01-21|Fast-fill master cylinder
    US5018353A|1991-05-28|Center compensating master cylinder
    US3060691A|1962-10-30|Hydraulic master cylinder
    US4667466A|1987-05-26|Quick fill type master cylinder
    GB1491046A|1977-11-09|Brake delay valve
    GB1186136A|1970-04-02|Dual Master Cylinder.
    US4052851A|1977-10-11|Hydraulic brake booster having independent reserve systems
    US4449757A|1984-05-22|Hydraulic actuator for a vehicle internal shoe-drum brake
    GB2052656A|1981-01-28|Master Cylinder
    WO1992003321A2|1992-03-05|Linear variable pressure adaptive braking and traction control system
    JPS54162335A|1979-12-22|Hydraulic anti-skid mechanism
    GB1435536A|1976-05-12|Hydraulic braking systems
    GB2194009A|1988-02-24|Hydraulic power booster
    同族专利:
    公开号 | 公开日
    JPS4836148B1|1973-11-01|
    DE1931403B2|1973-04-26|
    PL72632B1|1974-08-30|
    GB1211047A|1970-11-04|
    DE1931403A1|1970-04-16|
    BE732963A|1969-10-16|
    DE1931403C3|1973-11-08|
    US3568441A|1971-03-09|
    FR2011402A1|1970-02-27|
    YU157169A|1973-04-30|
    SE348987B|1972-09-18|
    YU31684B|1973-10-31|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1381407A|1972-07-07|1975-01-22|Girling Ltd|Master cylinder assemblies for vehicle hydraulic braking systems|
    GB1472136A|1974-06-08|1977-05-04|Girling Ltd|Master cylinder assembly for a vehicle hydraulic braking system|
    US4408805A|1980-06-17|1983-10-11|Lucas Industries Limited|Control valve assemblies for hydraulic braking systems|
    YU44558B|1981-05-20|1990-10-31|Lucas Ind Plc|Main cylinder assembly for the braking system of a vehicle|
    US4553395A|1982-06-11|1985-11-19|Lucas Industries Public Limited Company|Master cylinder assembly for a vehicle braking system|
    DE3302483C2|1983-01-26|1992-07-02|Alfred Teves Gmbh, 6000 Frankfurt, De|
    DE3317611C2|1983-05-14|1987-12-10|Alfred Teves Gmbh, 6000 Frankfurt, De|
    FR2561597B1|1984-03-20|1988-04-22|Peugeot|MASTER CYLINDER WITH INTEGRATED HYDRAULIC ASSISTANCE|
    US6729132B2|2002-07-19|2004-05-04|Meritor Heavy Vehicle Braking SystemsLtd|Remotely and directly pedal operated hydraulic compact booster for bi-directional braking|
    AT487648T|2006-06-28|2010-11-15|Studio Tecnico 6M Srl|OPERATING DEVICE|
    ITTO20070908A1|2007-12-18|2009-06-19|Vhit Spa|BRAKING BALANCING VALVE, FOR AN AGRICULTURAL TRACTOR OR SIMILAR VEHICLE|
    US9510895B2|2010-11-05|2016-12-06|Ethicon Endo-Surgery, Llc|Surgical instrument with modular shaft and end effector|
    US10881448B2|2010-11-05|2021-01-05|Ethicon Llc|Cam driven coupling between ultrasonic transducer and waveguide in surgical instrument|
    CN102431536A|2011-11-28|2012-05-02|山东遨游汽车制动系统股份有限公司|Balance type hydraulic pump|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB2960068A|GB1211047A|1968-06-21|1968-06-21|Two pedal hydraulic braking system|
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