• 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 pneumatic servo booster includes a shell housing consisting of front and rear shells, a valve body slidably extending through the rear shell, a flexible diaphragm cooperating with the valve body for partitioning the interior of the shell housing into front and rear chambers, a plunger connected to an input rod and being slidably fitted in the valve body, a valve mechanism including a poppet valve and two valve seats which are formed respectively on the valve body and the plunger, and at least one rigid rod secured respectively to the front and rear shells and extending through the front and rear chambers. The valve mechanism communicates the two chambers when the poppet valve is spaced from the valve seat of the valve body and is seated on the valve seat of the plunger. A return movement restricting member is slidably mounted on the rigid rod and engages with the plunger, and resiliently restricts the return movement of the plunger at the end of the return stroke of the input rod.
    公开号:SU1210657A3
    申请号:SU813247949
    申请日:1981-02-16
    公开日:1986-02-07
    发明作者:Такаяма Тосио；Андо Хироми
    申请人:Токико Лтд (Фирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to the braking control of vehicles, in particular to pneumatic amplifiers.
    The purpose of the invention is to increase the sensitivity of the pneumatic servo amplifier.
    FIG. 1 shows a pneumatic servo amplifier, longitudinal section; in fig. 2-valve control, cut, in the neutral position; FIG. 3 - the same, when braking; on figa - the same, when disinhibition; 5 shows a rigid plate element, isometry; 6 shows openings in the control valve; 7 is the same; an embodiment; on Fig the same longitudinal section; Fig. 9 shows a section A-A in Fig. 8 in Fig. 10 a pneumatic servo amplifier, an embodiment; Fig. 11 shows a control valve according to another variant of the servo amplifier, in the neutral position in Fig. 12, the same during braking; 13 - the same., When disinhibition; Fig. 14 shows a modification of the elastic element.
    The servo amplifier contains a thin-walled case 1 consisting of front 2 and rear 3 shells, flexible diaphragm 4 dividing the internal cavity of the case into two chambers B and B, power piston 5 bonded to diaphragm 4 Control valve 6 connects and disconnects as cameras B and B between themselves, and camera B with the atmosphere. Moreover, chamber B is permanently connected to a vacuum source, in particular, the suction port of a car engine. The valve 6 comprises a disc-shaped closure element 7, an annular valve seat 8 formed on the body 9 of the valve 6, and an annular valve seat 10 made on the piston 11. The body 9 of the valve 6 is installed slidably relative to the rear shell 3 and has a part 12 larger the diameter at its inner end, to which the inner part of the diaphragm 4 is attached, the plunger 11 is slidably mounted in the valve body and connected to the control rod 13. Between the rear casing 3 and part 14 of a smaller diameter valve body 6 O-ring seal 15 so as to simultaneously create a seal and sliding support for the body.
    . 20
    2106572
    The valve 6. In part 14 of a smaller diameter of the valve body 6, an opening 16 is made, in which a spring stop 17 is installed, supporting 5 seconds on the shoulder 18, made in the opening 16. One end of the disk member 7 is fixed on the spring limit body 17, thus, it is sealed relative to the hole 16.
    10 The other end 19 of the plate member 7 cooperates with the valve seats 8 and 10. The control rod 13 is pressed by the coil spring 20 mounted on the spring head 15 of the reader 17.
    In the non-working state, the servo-amplifier reverse movement of the plunger 11 is limited and there is a gap between the disk element 7 and the valve seat 8 on the housing 9 of the valve 6, while the disk element 7 sits on the valve seat 10 on the plunger 11. The camera B 25 is driven with chamber B through an axial channel 21, made in a part 12 of a larger diameter of valve body 9 -. 6, an annular cavity 22 in the valve body 9 and a radial groove in the valve body 9.
    When the servo amplifier is turned on, the control rod 13 moves to the left, the disk element 7 sits on the valve seat 8 after the clearance is selected, due to which the connection between chambers B and B is interrupted. Then the disk element 7 rises from the valve seat 10 of the plunger 11, when This chamber B is connected to the atmosphere through a radial groove, annular 5th cavity 22, a cavity located in the opening 1 6 of the valve body 9 6 around the control rod 13, and through the hole in part 14 of the smaller diameter valve body 9 9. and B, a pressure difference arises, with the result that the power piston 5 with diaphragm 4 and valve body 9 are displaced to the left. The output force is transmitted through the output rod 23 and acts on the piston of the main brake cylinder (not shown) of the hydraulic braking system of the automobile. There is also a jet disk 24 for transferring the output force from the power piston 5 to the output rod 23, as well as for transferring the reaction
    40
    45
    50
    3
    force on the control rod 13 through the plunger 11.
    In addition, there are two power rods 25, which pass through the front and rear shells 2 and 3 and through chambers B and B. B of the presented design, rods 25 pass through the flange of the valve body part 12, the power piston 5 and the hole in the flexible diaphragm 4 The corrugated sealing element encloses the rod 25, thereby isolating chambers B and C from the space along the rod 25.
    In accordance with the invention, the restricting backward movement element 26 is designed to limit the reverse motion of the plunger 11 relative to the housing 1. The restricting backward movement element 26 (Fig; 5) is a predominantly rectangular rigid plate having a hole 27 at one end, in the middle a hole 28 and at the other end of the slot 29. The restriction element 26 is freely installed in the radial groove 30 in part 12 of a larger diameter of the valve body 9, and one of the forces passes through the hole 27 x rods 25, and a part of a smaller diameter of the plunger 11, formed by the annular groove 31, is placed in the slot 29. One of the fastening screws 32 freely fastening the power piston 5 and the disk support 33 with a part 12 of a larger diameter 9 valve. The restriction member 26 can be moved in the groove 30 parallel to the axis of the servo amplifier. The power rod 25 passing through the opening 27 has a shoulder 34 at its rear end. As the valve body 9 moves to its rear-end position (FIG. 1), the restriction element 26 rests against the shoulder 34, thereby limiting the movement of the power piston 5 and, therefore, reverse movement of the valve body 9. The control rod 1.3 and the plunger 11 are also shifted back by the action of the spring 20 and their reverse movement is limited by the element 26, which abuts against the wall 35 of the annular groove 3 1 in the plunger 11. There is a small 10657 between the disc element 7 and the valve seat 10 of the plunger 11
    Shoy gap 5,. Preferably, the gap S is as small as possible, however, it is important that the disk element 7 is tightly seated on the valve seat 5 of the valve body 9. Since the return movement of the plunger is limited by element 26, the radial inner edge 36 of the power piston 5 does not come into contact with the annular groove 31 of the plunger 11.
    A cavity 22 formed by the valve seat 8 on the valve body 9, the valve seat 10 on the plunger 11 and the j, the rail element 7, is connected to chamber B through the groove 37 in the valve body 9 and the groove 30, and also to the atmosphere through the gap S,, the inner cavity of the disc element 7
    20 and a hole at the rear end of the valve body 9. Thus, in the normal non-operating position of the servo amplifier of the valve housing-9, it is slightly displaced forward from the position shown in figure 1 to select the clearance,. This position is shown in figure 2.
    It should be noted that the servo amplifier is in the position shown in Fig. 1 only immediately after assembly, and when the chamber 6 is connected to a vacuum source, the valve body 9 is displaced to the left so that the element 7 first sits on the valve seat 10 on the piston 35 The valve 11 is then separated from the valve seat on the valve body 9, and the air from chamber B is released into the vacuum source through chamber B. The valve body 9 is then boosted into the position shown in Fig. 2.
    In the normal non-operating position shown in FIG. 2, the disc element 7 interacts with the valve seats 8 and 10 in such a way that
    5, chamber B is isolated from the atmosphere and from chamber B. When the brake pedal of the car (not shown) is pressed, the plunger 11 is displaced to the left, as a result of which the valve seat 10 on the plunger 50 re 11 immediately departs from the disk element 7 to let in atmospheric air and the servo amplifier; srabshaet Since the control rod 13 does not have a dead stroke, the pedal's sensitivity increases. Such a position is shown in FIG.
    During the reverse course of the servo amplifier (figure 4) the limiting element 26
    thirty
    shifted back due to the reverse movement of the plunger 11, and the maximum clearance of §2 between the disk element 7 and the valve seat 8 is mainly determined by the difference between the depth of the groove 30 in the valve body 9 and the thickness of the element 26. during the reverse course.
    The grooves 37 connecting the cavity 22 to the chamber B through the groove 30 may have a different configuration. In Fig. 6, two axial grooves 37 are made in the valve body 9 and are partially limited by the outer cylindrical surface of the plunger 11. In Fig. 7, the grooves 37 have the appearance of axial grooves made in the plunger 11. In Fig. 8 and 9, the arcuate grooves 37 are made in the housing 9 valve separately from the hole in which the plunger slides 11.
    According to FIG. 10 and 13 (corresponding to FIGS. 1 and 2), the restrictive element 26, when retracted, abuts against a pivot sleeve 38, which is mounted on the rear end of the reinforcing rod 25 and is preferably made of natural or synthetic rubber. During the reverse course
    the servo amplifier element 26 rests on the elastic sleeve 38, thereby stopping the reverse movement of the plunger 11 and the control rod 13. The control rod and the plunger smoothly return to the non-operating position, while noise is reduced.
    Servo operation according to
    FIG. 10 - 13 are otherwise similar to the operation of the servo amplifier shown in FIGS. 1-6.
    An elastic Ring 39 can be mounted on the power rod 25 (Fig. 14). When the element 26 returns to the rear position, the ring 39 is clamped between the element 26 and the collar 34 formed at the rear end of the power rod 25. The ring 39
    mainly made of natural or synthetic rubber, but can be replaced by one or more spring washers.
    In the proposed constructions two
    The power rods 25 are installed in a vertical central plane, but they can be mounted in a horizontal plane. And it can be installed three or more
    power rods. The restriction member 26 may be slidably mounted on the any end of the power rods.
    th / y /
    /four
    FIG. g
     21
    fig.Z
    &, /
    "G / / / / 4 / / / /
    .-Y
    7
    J7
    //
    Phi1.5
    J
    Fi.B.
    FIG. 7
    thirty
    Fig.8
    J7
    FIG. 9
    Fig.
    38
    FIG. eleven
    Fig.12.
    FIG. 13
    Editor V. Petrash
    Compiled by S. Makarov. Tehred A. Kikemezey Proofreader A. Zimokosov
    539/61 Circulation 648 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Branch PPP Patent, Uzhgorod, Proektna St., 4
    权利要求:
    Claims (2)
    [1]
    1. PNEUMATIC SERVO AMPLIFIER, comprising a thin-walled housing from the front and rear shells, a control valve, the housing of which is slidably mounted in an opening formed in the rear shell, a flexible diaphragm connected to the control valve housing and separating the thin-walled housing into the front and rear cameras communicating between each other through the control valve, while in the front shell an opening is made for connecting the front camera mainly with a vacuum source, the control valve includes a latched locking element and two saddles located respectively on the control valve body and on the plunger _ connected with the control rod and mounted with the possibility of sliding in the axial channel of the control valve body, in which a radial hole is formed for the axial channel to communicate with the rear chamber in communication with the atmosphere between the front and rear shells inside the thin-walled body there is at least one power rod and a rigid plate element that enters the groove to limit it back In turn, in order to increase sensitivity, a rigid plate element is passed through a radial hole in the control valve body and secured to the power rod with the possibility of sliding, limited from the back shell by a shoulder on the shaft of the power rod, which ensures fit disk locking element to the seat on the plunger in its original position.
    [2]
    2. The servo amplifier according to claim 1, characterized in that an elastic element is installed between the rigid plate element and the shoulder of the power rod.
    SU ,,, 1210657
    类似技术:
    公开号 | 公开日 | 专利标题
    US3517588A|1970-06-30|Servomotor and valve means
    RU2048327C1|1995-11-20|Valving unit for control of air-operated brake amplifier
    SU1210657A3|1986-02-07|Pneumatic servoamplifier
    US4892027A|1990-01-09|Vacuum brake power booster for automotive vehicles and method for its manufacture
    US4469009A|1984-09-04|Pneumatic booster
    GB2068067A|1981-08-05|Pneumatic servo booster
    US4729289A|1988-03-08|Power brake booster for an automotive vehicle
    JP2540050B2|1996-10-02|Pneumatic brake booster
    US5233907A|1993-08-10|Pneumatic booster with double-purpose shutter
    JP3813617B2|2006-08-23|Pneumatically operated booster for automotive brake equipment
    US5040450A|1991-08-20|Tandem brake booster control housing with axially extending ducts
    GB2060100A|1981-04-29|Vacuum brake boosters
    US4794844A|1989-01-03|Pneumatically operated servo-booster
    JP4278427B2|2009-06-17|Pneumatic booster with tubular intake valve and pressure equalizing valve
    GB2044868A|1980-10-22|Two-circuit vacuum brake booster
    GB2258705A|1993-02-17|Actuating unit for a hydraulic brake system for automotive vehicles
    JP2004034962A|2004-02-05|Pneumatic booster with offset intake valve seat and equalizing valve seat
    US5249505A|1993-10-05|Poppet retainer for control valve
    US4970940A|1990-11-20|Vacuum brake booster for automotive vehicles
    US5079991A|1992-01-14|Brake booster
    US3016880A|1962-01-16|Diaphragm brake booster
    GB1593079A|1981-07-15|Booster for vehicle braking system
    US4491056A|1985-01-01|Suction pressure operated booster for automobile brake systems
    JP2001106053A|2001-04-17|Vacuum booster
    RU2080494C1|1997-05-27|Pneumatic servomotor and method its control
    同族专利:
    公开号 | 公开日
    US4402256A|1983-09-06|
    JPS56143158U|1981-10-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4270353A|1977-10-20|1981-06-02|Girling Limited|Servo boosters for vehicle brake systems|
    ZA793137B|1978-07-08|1980-06-25|Lucas Industries Ltd|Servo boosters for vehicle braking systems|
    JPS5851505B2|1979-02-02|1983-11-16|Nisshin Kogyo Kk|
    JPS5845379B2|1979-11-09|1983-10-08|Aisin Seiki|JPH032706B2|1980-04-21|1991-01-16|Jidosha Kiki Co|
    US4519295A|1983-06-02|1985-05-28|Allied Corporation|Vacuum brake boosters|
    FR2566728B1|1984-02-22|1986-09-19|Dba|BRAKE ASSIST MOTOR|
    JPH0345892Y2|1984-03-05|1991-09-27|
    JPH0418934Y2|1984-04-20|1992-04-28|
    DE8810531U1|1988-08-19|1989-12-21|Lucas Industries P.L.C., Birmingham, West Midlands, Gb|
    JP2817114B2|1990-02-13|1998-10-27|曙ブレーキ工業株式会社|Mounting structure of brake booster|
    FR2727922B1|1994-12-09|1997-02-14|
    FR2777850B1|1998-04-24|2000-06-09|Bosch Syst Freinage|BRAKING DEVICE WITH SIMPLIFIED SPACER|
    DE102008032257A1|2008-07-09|2010-01-14|Lucas Automotive Gmbh|Brake booster for a motor vehicle brake system and corresponding motor vehicle brake system|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP1980041222U|JPS56143158U|1980-03-28|1980-03-28|
    [返回顶部]