• 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 housing, a flexible diaphragm partitioning the interior of the housing into front and rear chambers, a valve body slidably mounted in the housing and connected to the diaphragm, and a valve mechanism incorporated in the valve body and including a poppet valve cooperating with a valve seat formed on the valve body and with another valve seat formed on a plunger which is connected to an input rod and is slidably mounted in the valve body. A return movement restricting member restricts the return movement of the plunger with respect to the housing when the valve body returns to its return position.
    公开号:SU1102491A3
    申请号:SU803222498
    申请日:1980-12-12
    公开日:1984-07-07
    发明作者:Татеока Кийоси；Андо Хироми
    申请人:Токико Лтд (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to pneumatic automation and can be used in vehicle brake drives. A pneumatic servo-driver is known, containing a casing with front and back walls, a piston formation enveloped by a flexible diaphragm separating the casing into the front and rear chambers, the first of which is connected by a vacuum source, inlet and outlet rods, and a distribution valve, the sleeve of which connected to a piston plate, made with a saddle and an axial bore, in which a locking element is mounted coaxially with the input rod. The disadvantage of this servo amplifier is low speed due to the large size of the working and reverse moves. Also known is a pneumatic servo amplifier, comprising a casing with front and rear walls, a piston plate enclosed by a flexible diaphragm dividing the casing into a front diaphragm. rear chambers, the first of which is connected to a vacuum source, inlet and outlet rods, as well as a distribution valve, the sleeve of which, connected to the piston plate, is made with a normally open ring seat and an axial bore that is with the anterior chamber, and on the other side From the rear, in the bore on the side of the piston plate, there is a slide on the sleeve with a normally closed annular seat and radial grooves, pivotally connected to the input rod, coaxially with which the spring-loaded locking valve element, wherein the sleeve is installed with the possibility of reciprocating movement of a normally closed seat in a hole of a normally open seat and a piston plate limiting the working stroke of sleeve 2J The disadvantage of the known servo heat is low sensitivity due to the large gap between the normally open pipe and the locking element of the valve in the initial position. The purpose of the invention is to increase the sensitivity. This goal is achieved by the fact that a pneumatic servo amplifier, comprising a housing with front and rear walls, a piston plate, enclosed by a flexible diaphragm, separating the housing into front and rear chambers, the first of which is connected to a source of vacuum, input and output rods, and a distribution valve , the sleeve of which, connected to the piston plate, is made with a normally open annular sedp and an axial groove, which on one side of the normally open seat is connected to the channel with the anterior chamber, and on the other SIDES - from the rear, in the bore on the side of the piston plate, there is a movable bushing with a normally closed annular seat and radial grooves, pivotally connected to the input rod, coaxially with which a spring-loaded locking element of the valve is installed, the bushing being installed with the possibility of reciprocating movement of a normally closed seat in a hole of a normally open seat, and with the piston plate a limiting stroke of the sleeve is connected, provided with a limiter of the reverse stroke of the sleeve, you olnennym in the form of a plate, a peripheral portion of which is disposed in the rear chamber with the possibility of reacting during the back with back wall, and an inner portion - in the radial groove of the sleeve. In this case, the backstop can be fixed either by the peripheral section on the diaphragm or by the internal section on the sleeve. FIG. 1 shows a pneumatic servo amplifier, in which the backstop is attached to the diaphragm by the peripheral section; in fig. 2 - the same, the backstop is fixed to the inner section on the sleeve; in fig. 3 - backstop mounted on the diaphragm; figure 4 is the same, mounted on the sleeve. The pneumatic servo amplifier contains a casing 1 with a front 2 and a rear 3 walls, a piston plate 4 enclosed by a flexible diaphragm 5 dividing the casing 1 into the front 6 and rear 7 chambers, the first 3 of which are connected to a vacuum source (not shown), The inlet 8 and outlet 9 rods, as well as the distribution valve (not shown) of the sleeve 10 of which is connected to the plate 4, is made with a normally open ring seat 11 and an axial groove 12 which is connected to the front chamber on one side of the seat 11 6, and on the other side of the saddle 11 channel 14 with a rear chamber 7, in the bore 12, from the side of the plate 4, there is a movable sleeve 15 with a normally closed annular seat 16 and radial grooves 17 and 18 hingedly connected to the rod 8, coaxially with the valve spring 19 installed, and the sleeve 15 is installed with the possibility of reciprocating movement of the seat 16 in the hole of the seat 11, and with the piston plate 4, the limiter 20 of the stroke of the sleeve 15 is connected, the peripheral section is placed in the chamber 7 to the limiter 22 21 of the reverse direction of the sleeve 15, and in the radial groove 18 there is an internal portion 23 of the restrictor 22. The piston plate 4 is spring-loaded with a spring 24, and the rod 8 is spring-loaded. 25. At the same time, the section 21 is fixed on the diaphragm 5 (FIG. 1), the section 23 on the sleeve 15 (FIG. 3). The device works as follows. In the initial position, the locking element 19 of the valve rests on the saddle 16, and the opening of the saddle 11 is open. Through the latter and the channels 13 and 14 14 of the chambers 6 and 7 are interconnected, the plate 4 is fixed. The locking element 19 is at a distance § from the saddle 11, an increase in 5 is prevented by a stop 22, supported by section 21 on the wall 3 of the casing 1. When acting on the input rod 8, the latter is displaced to the left (iio drawing) and, after the gap S is selected The suction element 19 rests on the saddle 11, the separated chambers 6 and 7. At the same time, the opening of the saddle 16 opens, through which the chamber 7 connects to the atmosphere. Since this results in a pressure drop between the chambers 6 and 7, the plate 4 with the diaphragm 5 and the output rod 9 is moved to the left. In the absence of external influence on the rod 8, the springs 24 and 25 return the plate 4, the diaphragm 5 and the rods 8 and 9 to their original position, with the element 19 again resting on the seat 16 and the hole. the seat 11 opens, jointly, chambers 6 and 7. Since during the reverse movement of the rod 8 and the sleeve 15, the peripheral section 21 of the restrictor 22 rests on the wall 3, the distance o, which determines the non-working part of the stroke of the rod 8, is set to be minimal, which ensures high sensitivity the servo amplifier when acting on the rod 8. The use of the invention in vehicle brake drives will increase their sensitivity and thus the efficiency of their use.
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    权利要求:
    Claims (3)
    [1]
    1. PNEUMATIC SERVO AMPLIFIER containing a casing with front and rear walls, a piston plate covered by a flexible diaphragm dividing the casing into the front and rear (nude chambers, the first of which is connected to a vacuum source, inlet and outlet rods, as well as a distribution valve, sleeve which, connected to the piston plate, is made with a normally open annular seat and an axial boring, which on one side of the normally open saddle is connected by a channel to the front chamber, and on the other hand, from the back, in the bore with a hundred On the piston plate there is a movable sleeve with a normally closed annular seat and radial grooves pivotally connected to the output rod, with which a spring-loaded locking element of the valve is installed coaxially with the sleeve mounted for reciprocating movement of the normally closed seat in the hole normally open saddle, and with the piston plate is connected the limiter of the stroke of the sleeve, characterized in that, in order to increase its sensitivity, it is equipped with a limiter m reverse stroke of the sleeve formed as a plate, a peripheral portion which is situated in the rear chamber to interact with the return stroke of the rear wall, and an inner portion - in the radial groove of the sleeve.
    [2]
    2. The servo amplifier according to π. 1, characterized in that the backstop is fixed by a peripheral portion on the diaphragm.
    [3]
    3. The servo amplifier according to claim 1, characterized in that the backstop is fixed by an internal portion on the sleeve.
    SU 11024 ^ 1
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1102491A3|1984-07-07|Pneumatic booster
    US2229247A|1941-01-21|Control device for hydraulic brakes
    GB1245805A|1971-09-08|Automatic banking apparatus for vehicles
    GB1092406A|1967-11-22|Evacuating valve assembly for a hydraulic jack
    US3088285A|1963-05-07|Device for varying hydraulic pressure
    GB1133496A|1968-11-13|Hydraulic accumulators
    US4729289A|1988-03-08|Power brake booster for an automotive vehicle
    GB1351958A|1974-05-15|Pneumatic actuators
    KR940014036A|1994-07-16|Gas pressure booster
    RU2108248C1|1998-04-10|Automobile brake with booster
    CA1040024A|1978-10-10|Fluid motor construction
    RU95110941A|1997-02-10|Brake pneumatic booster
    SU1210657A3|1986-02-07|Pneumatic servoamplifier
    KR880012418A|1988-11-26|Pneumatic booster
    GB1011731A|1965-12-01|Fluid pressure servomotor
    JPS5620841A|1981-02-26|Wheel cylinder
    US4351225A|1982-09-28|Vibration attenuation construction for an impact air tool
    US4484866A|1984-11-27|Piston pump
    US3200579A|1965-08-17|Fluid pressure servomotors
    GB1033137A|1966-06-15|Improvements in and relating to pressure responsive servomotors
    JP2798806B2|1998-09-17|Brake booster
    GB1344837A|1974-01-23|Gas powered drive unit
    SU594888A3|1978-02-25|Two-chamber pneumatic booster of vehicle brake pneumohydraulic controls
    FR2441748A1|1980-06-13|Reciprocating pneumatic motor servo system - has orifice in valve plate moved across it by differential pressure
    US2718437A|1955-09-20|Fluid pressure control valve
    同族专利:
    公开号 | 公开日
    DE3046965C2|1988-08-11|
    FR2472095A1|1981-06-26|
    JPS5689754U|1981-07-17|
    GB2065809B|1984-06-27|
    AU6526280A|1981-06-18|
    GB2065809A|1981-07-01|
    AU542106B2|1985-02-07|
    US4590845A|1986-05-27|
    DE3046965A1|1981-09-17|
    FR2472095B1|1985-11-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB1056020A|1964-12-07|1967-01-25|Bendix Corp|Fluid pressure servomotor|
    US3688647A|1970-12-21|1972-09-05|Bendix Corp|Clip retainer|
    US3937021A|1974-07-01|1976-02-10|The Bendix Corporation|Hold off valve for a two stage servomotor|
    JPS51116392U|1975-03-14|1976-09-21|
    JPS53152081U|1977-05-06|1978-11-30|
    JPS5477885U|1977-11-14|1979-06-02|
    JPS5835893B2|1978-01-23|1983-08-05|Toyota Motor Co Ltd|
    JPS6149140B2|1979-02-28|1986-10-28|Toyota Jidosha Kk|
    JPS5671661A|1979-11-09|1981-06-15|Aisin Seiki Co Ltd|Brake booster for automobile|DE3116584C2|1980-01-15|1995-11-09|Teves Gmbh Alfred|Master cylinder|
    GB2068067B|1980-01-21|1983-11-09|Tokico Ltd|Pneumatic servo booster|
    JPH032706B2|1980-04-21|1991-01-16|Jidosha Kiki Co|
    US4487105A|1980-11-10|1984-12-11|The Bendix Corporation|Four position control valve for a pneumatically operated servomotor|
    FR2499923B1|1981-02-19|1983-04-15|Dba|
    JPS6233651Y2|1981-03-30|1987-08-28|
    JPS58158748U|1982-04-20|1983-10-22|
    FR2532084B1|1982-08-20|1984-12-21|Dba|
    DE3338458C2|1983-10-19|1990-11-22|Alfred Teves Gmbh, 6000 Frankfurt, De|
    DE3337894C2|1983-10-19|1990-08-16|Alfred Teves Gmbh, 6000 Frankfurt, De|
    DE3344730A1|1983-12-10|1985-06-20|Alfred Teves Gmbh, 6000 Frankfurt|Vacuum operated brake booster|
    FR2561599B1|1984-03-21|1986-08-22|Dba|BRAKE ASSISTANCE SERVOMOTOR|
    US4800799A|1985-03-05|1989-01-31|Aisin Seiki Kabushiki Kaisha|Vacuum type brake booster|
    JPS62121160U|1986-01-24|1987-07-31|
    JPS62125657U|1986-01-31|1987-08-10|
    FR2596714B1|1986-04-08|1988-06-10|Bendix France|BRAKE ASSIST MOTOR|
    FR2596713B1|1986-04-08|1990-11-30|Bendix France|BRAKE ASSIST SERVO MOTOR|
    US4729285A|1986-07-07|1988-03-08|Allied Corporation|Control valve for a vacuum brake booster|
    JPH0449022Y2|1986-08-29|1992-11-18|
    JPS6358062U|1986-10-06|1988-04-18|
    JPH0722368Y2|1987-02-12|1995-05-24|自動車機器株式会社|Brake booster|
    JPH0412851Y2|1987-10-30|1992-03-26|
    JPH0266364U|1988-11-11|1990-05-18|
    JPH0340278U|1989-08-31|1991-04-18|
    GB9103468D0|1991-02-19|1991-04-03|Automotive Prod Plc|Direct acting vacuum servo|
    JP3281971B2|1994-05-23|2002-05-13|トキコ株式会社|Pneumatic booster|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    JP1979173133U|JPS5689754U|1979-12-14|1979-12-14|
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