• 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:
    A motor vehicle provided with servo-assisted controls for the brakes and steering, has an hydraulic system of the type comprising a volumetric pump the input of which is connected to a reservoir, and first and second distributor devices the first of which is associated with the steering control device and the second of which is associated with the master cylinder for control of the brakes. The said second distributor device is formed in such a way as to function also as a pressure modulating valve.
    公开号:SU1026644A3
    申请号:SU803217511
    申请日:1980-12-10
    公开日:1983-06-30
    发明作者:Бертоне Антонио；Ваннини Паоло
    申请人:Чентро Ричерке Фиат С.П.А. (Фирма)；
    IPC主号:
    专利说明:

    The invention relates to the automotive industry, in particular to the hydraulic systems of automobiles.
    Closest to the proposed is the hydraulic system of the car: a mobile, containing a volumetric pump, the inlet of which is connected to the reservoir of the brake master cylinder with a piston controlled by a pedal, hydraulic steering servo connected by a steering wheel of the first distribution device to the volumetric pump. tank, the second switchgear, mounted in the cortus section of the main cylinder of the tank, and represented by itself in a cylindrical The bridges of the control piston section, dividing the latter into two chambers, the first of which is connected to the main braking output, and the second through channels, wavy in the control piston and section walls, with the reservoir, directly with the booster cylinder of the brake master cylinder and with the inlet channel connected to the outlet of the 4th pump by means of a valve assembly ensuring the closing of the last of the indicated channels in the control piston П1Ж of its interchange-: SRI to the working position 1.
    The known system has a rather complicated construction, since it requires the use of a separate valve with a smooth characteristic.
    The purpose of the invention is to simplify the KOH structure.
    This goal is achieved by THAT; in the hydraulic system of the car, containing a volumetric pump, the input t of which is connected to the reservoir, the main brake cylinder with the piston control pedal, the hydraulic servo-mechanism of the steering control, connected through the first switchgear controlled by the steering wheel to the volumetric pump and the tank, the second switchgear, mounted in the section of the main brake cylinder housing and represented by a piston installed in the cylindrical cavity of the control section, section d) shy last two chamber, the first of which communicates with the outlet of the master cylinder and the second. through channels, vypolie1Sh} with in v
    the control piston and the walls of the sec--. ; - With a reservoir, and directly with the booster cylinder of the main brake cylinder and with an inlet channel connected to the output of the displacement pump, through a valve assembly that provides the last of these channels in the control piston to shut off as it moves
    operating position, the valve assembly is designed as a tubular PO1N11NYa section installed with the possibility of sliding in the second chamber, closed from the end most distant from the control piston and separating said chamber on. two compartments, each of which is in communication with the amplifying chamber, and a spool installed in the tubular port and limited with its walls, the third chamber, and in the section wall an output channel is made, connected to the tank through the first switchgear, and in the tubular piston radial channels are made, the third chamber is connected with the input and output channels of the section, the valve is formed with a valve end to cross the message between the outlet and the entrance channels of the section, on the internal pipe wall The piston has an annular seat under the valve, and the other protruding end of the spool has a valve .4 The valve for closing the channel in the control piston is closed, the end of the valve has a valve for disassembling the third with the compartment of the second chamber located Kt 4 the tubular piston and topafs of the cilin wall of the colon cavity, and in the third chamber steak, an annular seat under the valve was made on the tubular nogexa, and the first elongated means was specified and a compartment installed NubioHeM is the second resilient tool.
    FIG. 1 depicts a hydraulic drive axle vehicle in FIG. 2 second switchgear cut.
    VC System The main brake cylinder sch 1, capable of creating pressure in two channels 2 and 3, respectively, connected to the brake circuits 4 and 5 of the front and rear wheels of the car.
    The cylinder 1 has a bortus with a cylindrical inner cavity 7, in which the main porosity is installed with the possibility of sliding. Sien 8, connected to the pedal 9 to control the torus (using the automobile system ..
    The hydraulic system includes a reservoir 10 connected by an inlet of an OSOCA 11 hydraulic. an actuator 12 for controlling the steering system avto 4bo and the first switchgear 13 connected to the actuator 12.
    the second switchgear 14 is connected to the master cylinder, 1, and is located in section 15, constituting an element of the casing 6 of the main cylinder 1. Inside section 15, there is a cylindrical cavity 16, the axis of which is parallel to the axis of the housing. The end face of the cavity 16 is closed by elements 17 and 18. The control 19 is hermetically and slidably mounted in the cylindrical cavity 16 and forms in it the first chamber located between the curve 17 and the end surface of the control porous 19 facing it; 20. This first chamber communicates with channels 3. and 2 chains of two channels 21 and 22, implemented in Koixiyce 15 of the second switchgear. In addition, iBcnoMoraTeJXbHffi) the control piston 23 is hermetically and slidably mounted in the first frame, its division into two compartments, communicating with the channels 21 to 22, respectively. The second chamber 20 communicates; I, through channel 24, inserted into a nine-liter 9, controlled the piston 19, and channel 25 in the building 15 with pipelines 4 26, connected with the revuoro 10. The second Kymer is also connected at one end through channel 27 in the cabin 15 with a cylindrical cavity 7 of the master cylinder 1, in which the main piston & 8 of the master cylinder are slidably mounted & flax. The tubular nojaueHb 28 is hermetically slidable in the second chamber 20. The tubular piston 28 has a piston 19 opposite the Snpa butt 29 opposite the Snpa. The spool 30 is hermetically slidable in the tubular piston 28 and forms in this a tubular third chamber 31, which is through radial channels 32 made in a tubular piston 28 with two openings — an inlet 33 and an outlet 34, in section 15 of a distributor. The inlet 3 of the distributor device is in communication with a podgoitim channel 35 connecting HeHHbw with an ikodo volume pump 11, and W (a single opening 34 communicates with a return duct 36, with a dynevym tank with 10.;: -..--: - .. - The butt-end 37 of the spool 30, facing the 2c tubular strip, is made in the form of a valve gate and .- interacts with the rings to the CéjauaoM 38, formed in the inner surface of the tubular poryn 28, in order to interrupt the LINK between the; 33 and OUTPUT from; verstable 34. The opposite end of the golden 30 it is laid outside the tubular tube, and its structure is such that it forms a valve gate 39 capable of interacting with the inlet end of the channel 24 in the control piston 19 to interrupt the connection between the second chamber 20 and the pipe connected to the reservoir. the wire 26. The closed end 29 of the tubular piston 28 forms a valve gate, which can be retracted from the annular valve seat 40 interacting with it, which is formed in the wall of the cylindrical cavity 16 so as to ensure the connection of the third chamber 31 s. The compartment of the second chamber 20, the horizontal position of the piston 28 and the extreme compartment of the cavity 16 formed by the end cap 18 is located. switchgear; The device 13 controls the operation of the hydraulic actuator 12 for controlling the steering system of the vehicle, is installed in the return channel 36, at the joint opening 34 of the second switchgear 14 with the reservoir 10. The device 13 of a known type has KOEfflyc 43 with Vzm® glide mobile zl® 1ent M 44, which is connected to the car’s steering wheel by means of a mechanical gear 45. Inside the housing 43 are two coil springs 46, which must move the movable element 44 to the equilibrium position corresponding to the average position of the steering wheel. The housing 43 has an inlet 47 and two outlets 48 connected to the reservoir 10. The inner cavity of the housing 43 is also connected via two channels 49 to two chambers 50 formed by the piston 51 in the hydraulic drive 12. The piston 51 has a rod 52 rigidly connected by a connecting element 53 s housing 43 with the ability to reverse, which is known per se, and automatically returns the switchgear 13 to its initial zero position after the end of each system operation cycle. When the mobile elite 44 occupies its middle position, the hole 47 communicates with two outlets 48 and, therefore, from the reservoir:. 10. On the other hand, when the mobile element 44 is displaced relative to its average position, the inlet 47 is connected by a pipeline 36, a third chamber of the switchgear 14 and a pipeline 35 with a volume one; pump 11 communicates with one of: two hydraulic chambers 50,; yes 12. The proposed system operates as follows. Clicking on the brake. Pedal 9 with chord leads to the shift to the left of the master cylinder. As a result, cylinder 1 creates pressure in channels 2 and 3 connected to the brake circuits 4 and 5 of the front and rear wheels of the car. The pressure established in channels 2 and 3 through the holes 21 and 22 in the housing 15 of the second switchgear 14 also acts on the end the surfaces of the auxiliary control piston 23 and the end surface of the control piston 19 facing the piston 23. If no force is applied to the brake pedal 9, the pistons 23 and 19 are held by a coil spring 42 installed between the pistons 19 and 28, The position closest to 17. The piston 28, in turn, is held in its extreme position corresponding to that in which the valve gate of the end 2 is pressed against the valve seat 40 by a helical spring 41 installed between the piston 28 and the end plug 18. Under these conditions . The liquid supplied by the volumetric pump 11 through the feed channel 35 through the inlet opening 33 enters the third chamber 31 of the switchgear 14 and flows out of the indicated chamber through the outlet 34, then through the channel 36 and the switchgear 13 for Release into tank 10. When depressed, the brake pedal has been created. The cylinder head 1 in the brake circuits 4 and .5 transfers pressure to the control pistons 19 and 23, and the auxiliary control piston 23 remains in its extreme position pressed against the cover 17, since the same surface is on its end surfaces, which has the same plane. pressure. On the other hand, the control piston 19, due to the pressure of the liquid through the opening 22 on its end facing the piston 23, is displaced first, overcoming the counter-action of the spring 42 until the inlet end of the channel 24 remains in contact with the valve gate 39, formed the end face 37 of the spool 30. Thus, the connection between the second chamber 20 and the channel 26 connected to the reservoir 10 is interrupted. As it moves the control piston 19 to the right, it moves the spool 30 until it is made in the form of a valve the end will not be En in contact with the valve seat 38, due to which communication is interrupted between the inlet 33 and the outlet 34. This interruption of communication leads to the creation of pressure in the third chamber 31 connected by the inlet 33 and the feed channel 35 to the outlet of the volumetric: pump 11 After the 3D end of the spool 37 of the 3D upers into the valve seat 38 of the tubular piston 28, the latter is displaced to the right, following the further displacement of the control piston 19
    Thus, the end face 29 of the piston 28, the disengaging valve, is retracted from the corresponding valve seat 40, overcoming the resistance of the coil spring 41, and through the channel 27 provides communication between the third chamber 31 and the cylindrical strip 7, in which the main the piston 8 of the main cylinder 1. The pressure created in the third chamber 31 is therefore applied to the piston 8, increasing the force exerted on the brake pedal 9. The same pressure is also transmitted to the compartment through channel 26 The second chamber 20, located between the control piston 19 and the piston 28, as a result of which both ends of the port 28 are subjected to equal pressure. As a result, under the action of the coil spring 41, the piston 28 returns to its extreme position corresponding to the position in which the gate at end 29 is pressed to valve valve 40. If the pressure in chamber 20 exceeds the pressure in channel 2 and bore 22, the control piston is displaced to the left, providing such communication between channel 24 and chamber 20, which allows the fluid contained in the chamber to flow through From channel 26 to tank 10, the connection between chamber .20 and tank 10 is interrupted again after pressure in chamber 20 drops to a level at which control piston 19 is again displaced to the right and brings the inlet port of channel 24 into contact with the valve. by shutter 39 In phase, the spool 30 can move inside the tubular piston 28 by raising the end 37, made in the form of a valve shutter, from the valve seat 38 so as to maintain a pressure in the third chamber equal to that which takes place in the second chamber 20.
    When the brake pedal 9 is released, the piston 8 returns to its original position under the action of an elastic means of a known type (not shown), which is equipped with the main cylinder 1. Since the pressure transmitted to the control piston 19 through channel 2 is removed, the control piston 19 moves to the left under the action of the coil spring 42. The inlet of the channel 24 is retracted from the valve gate 39, providing a connection between the second chamber 20 and the channels 26 and 27 and collecting cavity 7 with the reservoir 10.
    In case of rupture of the pipeline 2 connected to the opening 22 by the subsequent pressing of the brake pedal 9, the auxiliary control $ 1 piston 23 is displaced to the right under the action of pressure / exerted through 3 and the opening 21 on its end surface facing (end face) 17. After the piston 23 presses on the h / control 19, pushing it if the valve gate 39, to the right of the distributor 14, even in the event of a specified breakdown. steering is automatic, the action of the steering wheel results in the displacement of the movable element from its equilibrium position corresponding to the front or middle floor of the steering wheel. This way, the output of the volumetric n: 9osa 11 through kak 35, inlet 33, third chamber 31, the outlet 34, the channel 36, the inlet 47 and one of the two channels 49 are in communication with one of the chambers 50 of the hydraulic drive 12. When the movable element 44 returns, the liquid returned to its middle position 11 by the flow pump output 48 is released into reservoir 10. If the brake pedal is also depressed after turning the steering wheel 45 of the car, the device will work as follows: when turning the steering wheel, the pivot element 44 of the distribution device 13 shifts from the middle voltage and the connection between hole 47 to outlet 48. As a result, pressure is created in the circuit formed by the supporting channel 35, the third chamber 31 of the distribution device 14 and the return channel section 36 connecting the outlet 34 to the inlet 47 13. The pressure in the third chamber 31 is held by the ram 30 in its extreme position at the end of PO1X1 28, facing the control piston 19. When the TOR14OZ pedal 9 is pressed, the pressure through channels 2 and 3 is transferred to the holes 21 and 22 and offsets control piston 19 to the right. Displacement 19 continues until the inlet of channel 24 is brought into contact with the valve gate 39. Further movement of the piston control 19 pushes to the corresponding piston 28, since the spool 30 is rigidly connected to the piston 28 under the action of pressure which takes place in chamber 31. The prediction of porins 28 causes the valve butt end 29 to move away from the valve seat 40, and that caMiiM establishes a connection between the third chamber 31, the lines 26 and 27 and the cylindrical cavity 7 of the main cylinder. Thus, the pressure created by the volumetric pump 11 acts on the main piston 8 of the main cylinder tpa 1, increasing the force applied to the top pedal 9. From this moment on, the operation of the switchgear is carried out similarly to that described. The effectiveness of the proposed system is a simpler design.
    权利要求:
    Claims (1)
    [1]
    (54) (57) A HYDRAULIC VEHICLE SYSTEM, comprising a volumetric pump, the input of which is connected to a reservoir, a brake master cylinder with a pedal-controlled piston, a hydraulic steering servo mechanism connected via a steering wheel-controlled first distribution device to the volumetric pump and reservoir, a second switchgear mounted in a section of the housing of the main brake cylinder and which is mounted in a cylindrical cavity. ··· .. sections control piston, dividing the latter into two chambers, the first of which is connected to the output of the main brake cylinder, and the second, through channels made in the control piston and section walls, with a reservoir, directly with the amplification chamber of the main brake cylinder and with an input channel connected to the output of the volume pump - CA, by means of a valve assembly providing the overlap of the last of these channels in the control piston when it is moved to the operating position, characterized in that, in order to simplify the design, the valve This assembly is made in the form of a tubular piston section mounted with the possibility of sliding in the cavity of the chamber and closed from the end farthest from the control piston and dividing the chamber into two compartments, each of which is in communication with the amplification chamber, and a spool mounted in the tubular piston and a third chamber bounding with its walls, while an outlet channel is made in the wall of the section, connected to the reservoir through the first switchgear, and in the tubular piston it is made. yen radial channels communicating the third chamber with the input and output channels of the section, a valve shutter is formed at one 'end of the spool to overlap the communication between the output and input channels of the section, an annular seat is made on the inner surface of the tubular piston for the valve and the other protruding end of the valve a valve shutter is formed for blocking the channel in the control piston with a closed end of the tubular piston; a valve shutter is formed for uncoupling the third chamber with the compartment of the second chamber, located laid between the tubular piston and the end wall of the cylindrical cavity, and in the wall · of the third chamber an annular saddle is made under. a valve on a tubular piston, wherein a first elastic means is installed in said compartment, and a second (elastic means.
    类似技术:
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    US3818706A|1974-06-25|Master cylinder with resiliently separated primary and secondary pistons
    EP0225212A1|1987-06-10|Hydraulic brake booster with quick take-up and reduced stroke
    US4072085A|1978-02-07|Combined hydraulic and vacuum booster
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    US4521061A|1985-06-04|Hydraulic brake system with slip control
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    US4901626A|1990-02-20|Hydraulic power booster
    SU1228782A3|1986-04-30|Vehicle braking system
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    US4754604A|1988-07-05|Hydraulic brake booster with tubular conduit return spring
    US2336374A|1943-12-07|Hydraulic brake booster
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    US3321917A|1967-05-30|Motor vehicle braking system
    EP2749462B1|2018-10-31|Hydraulic braking system and method of brake boosting in a motor vehicle
    US4924755A|1990-05-15|Hydraulic power booster
    同族专利:
    公开号 | 公开日
    DE3046530A1|1981-09-17|
    IT1119968B|1986-03-19|
    FR2471891A1|1981-06-26|
    GB2065044A|1981-06-24|
    US4362019A|1982-12-07|
    NL8006682A|1981-07-01|
    IT7969373D0|1979-12-11|
    FR2471891B1|1983-07-29|
    JPS5690766A|1981-07-23|
    GB2065044B|1983-06-22|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2459729C1|2008-06-26|2012-08-27|Гавернмент Оф Дзе Юнайтед Стейтс Оф Америка Эз Репрезентед Бай Дзе Администрейтор Оф Дзе Ю.Эс. Энвайрнментал Протекшн Эйдженси|Braking system and method, and boosted braking|US3349801A|1965-09-13|1967-10-31|John F Grundmann|Valve arrangement|
    DE2004680A1|1970-02-03|1971-08-12|Rattay K|Electronic switch, especially for capacitive measuring circuits|
    CA930640A|1970-06-08|1973-07-24|L. Lewis Richard|Hydraulic brake booster|
    DE2306055C3|1973-02-08|1979-02-08|Wabco Westinghouse Gmbh, 3000 Hannover|Control device for the hydraulic brake system of the trailer of a towing vehicle, in particular an agricultural tractor|
    US4161867A|1974-11-12|1979-07-24|Aisin Seiki Kabushiki Kaisha|Hydraulic brake booster|
    IT1047398B|1975-10-10|1980-09-10|Fiat Spa|HYDRAULIC BRAKING SYSTEM WITH HYDRAULIC SERVO BRAKE|
    IT1055673B|1975-11-12|1982-01-11|Fiat Spa|HYDRAULIC SERVO BRAKE|
    IT1070618B|1976-07-20|1985-04-02|Fiat Spa|HYDRAULIC BRAKING SYSTEM WITHOUT ACCUMULATORS FOR THE SUPPLY OF MULTIPLE INDEPENDENT SERVICES|
    IT1156401B|1978-01-04|1987-02-04|Fiat Spa|SERVO-ASSISTED HYDRAULIC BRAKING SYSTEM FOR MOTOR VEHICLES|DE3218194C2|1982-05-14|1994-03-10|Teves Gmbh Alfred|Hydraulic booster|
    DE3433439C2|1984-09-12|1994-06-30|Teves Gmbh Alfred|Hydraulic amplifier, in particular for brake systems in motor vehicles|
    DE3437834A1|1984-10-16|1986-04-17|Alfred Teves Gmbh, 6000 Frankfurt|Multi-way valve, in particular a brake valve controlled by external force|
    DE3604697A1|1986-02-14|1987-08-20|Teves Gmbh Alfred|BRAKE SYSTEM WITH SLIP CONTROL|
    FR2614371B1|1987-04-23|1993-04-09|Bennes Marrel|CONTROL VALVE, ESPECIALLY FOR HYDRAULIC BRAKES OF A VEHICLE|
    JPH03501597A|1988-10-04|1991-04-11|
    DE4223765C1|1992-07-18|1993-08-26|Integral Hydraulik & Co, 4000 Duesseldorf, De|Hydraulic switch valve for hydro-accumulator circuit - has control piston loaded with pressure from a user connection against force of return spring|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT6937379A|IT1119968B|1979-12-11|1979-12-11|HYDRAULIC SYSTEM FOR A VEHICLE EQUIPPED WITH CONTROLS SERVO ASSISTED BY THE BRAKE AND STEERING|
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