• 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:
    The casing (10) of a servo-brake has a casing collar (30) from which a tubular extension (80) projects axially towards the outside. Inside the casing (10) and its tubular extension (80) are arranged in an axially movable manner in relation to one another two control units (40, 50), each comprising a valve seat (42, 52) and connected to the mobile partition wall (12) and to a force delivery unit (54) or actuating unit (64). A valve closure unit (70) is pressed by means of at least one spring (72) against the actuating unit (64) and, depending on the position of the valve seats (42, 52), is located against one or other of the seats, or against both, which enables regulation of the pressures in the two chambers (14, 16). A stop (68) on the actuating unit (64) is kept, when the force amplifier is at rest, by the spring (72) against a stop (90) on the end of the tubular extension (80) at a distance from the casing (10). The tubular extension (80) is surrounded by the collar of the casing (30); from an end position which it assumes when at rest it can be inserted in a telescopic manner into the casing (10) and is made leakproof against the collar of the casing (30).
    公开号:SU1436865A3
    申请号:SU864022037
    申请日:1986-02-04
    公开日:1988-11-07
    发明作者:Гегальски Хельмут
    申请人:Лукас Индастриз Паблик Лимитед Компани (Фирма)；
    IPC主号:
    专利说明:

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    This invention relates to a brake control of an auxiliary one, in particular to pionmatic amplifiers.
    The purpose of the invention is the improvement of the axial dimension.
    The drawing shows a pneumatic amplifier (upper half), axial section,
    The pneumatic amplifier as a whole is made symmetrical with respect to the axis Ln and includes a housing 1, in which a sub-front partition 2 separates the front chamber 3 from the rear chamber 4. The valve device 5 selectively either connects two chambers or separates them. The front chamber 3 is constantly connected to a vacuum source, for example, to the intake manifold of an internal combustion engine. The back chamber 4 with the help of the valve device 5 can be selectively connected either to the front chamber; Chery 3, or with the atmosphere.
    The housing has a front part 6, to which the bolts 7 with a threaded thread for rigid fastening of the main cylinder (not shown) are riveted to provide a paraxial arrangement, and the rear part 8 to which bolts 9 to a threaded thread for fastening are riveted to the paraxial position - neither an amplifier on a part, an automobile, for example on a control panel, the rear part 8 of the housing has an outer flanged chip 10 which jointly holds both parts b and 8 of the housing, and also has 11 of the body.
    The movable partition 2 contains the diaphragm 12 of elastomer and the support plate 13. The diaphragm 12 is provided outside
    edge flange 14, tightly clamped in the region of flanged edge 10 between the two parts of the housing B and B, as well as the internal edge flange 15 rigidly attached together with the base plate 13 to the central element 16, relative to which it is sealed.
    On the outer element 16 there is an annular outer seat 17 of the valve, directed backward, and the valve device housing 18, which is open to the rear of the cocking body 17. The annular space between the outer seat 17 of the valve and the housing 18 is connected to the front chamber 3 at least 0
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    at least one channel 19 parallel to the axis. The space directly inside the annular outer seat 17 of the valve is connected to the rear chamber 4 by at least one channel 20, which goes backwards, and at the beginning it also runs parallel to the axis, and then in the radial direction.
    Inside element 16, plunger 21 is coaxial with it; which likewise contains a ring-shaped internal valve seat 22, directed backward. The element 16 and the plunger 21 are mounted with the possibility of axial movement relative to each other and relative to the housing 1.
    The axial force rod 23 located along the axis is coordinated with element 16, it is made with support point 24, by means of which it attaches to elastomeric body 25, located g element, 16 between support point 24 and 5 by plunger 21 without cavity formation. Its diameter is the same as that of the support, tip 2L, and significantly larger than the diameter of the plunger 21, Taki. {The elastomer body 25 is an element of the transfer of quasi-hydraulic energy between the plunger 21 and the support fifth 24 of the stem 23,
    The rod 23 interacts with the master cylinder and protrudes through the opening 26 of the front part 6 of the housing. Prior to the installation of the main cylinder, the rod 23 is protected from being dropped by a protective cap 27 rigidly attached to the element 16,
    A control rod 28 is hinged to the plunger 21, the latter extending axially backwards and. it is provided with a threaded thread section 29, on which a nut-shaped stop 30 having an i-shaped cross section, is screwed on and open radially outwards.
    The flat annular valve locking element 31 is interconnected with both annular seats 17 and 22 of the valve-. The locking element 3-1 is located around the stem 28, about which it is supported by the front conical coil spring 32, so that it constantly abuts at least one of the two valve seats 17 and 22. Element 31 is formed in the form of an elastomeric body with a metal insert and is made in one piece with
    ten
    20
    a ribbed diaphragm 33, provided with a parabolic thickening 34, extending beyond the rear edge of the housing 18 of the valve device. Between the marginal thickening 34 and nut-like emphasis. 30, the rear bar 35 is clamped. It is also made in the form of a conical helical spring and provides a tight connection between the edge thickening 34 and the valve device body 18.
    The tubular element 36, which extends axially backward and is located at the narrowing 11 of the body for telescopic movement, has a flange 37 at its front end, which in the inoperative position of the amplifier is engaged with the shoulder 38 at the transition between the narrowing 11 and the rear part 8 of the body The location directly with the flange 37 is that element 36 is made with a protrusion 39 directed radially inward, which enters the radial channel 20 of element 16, providing limited axial relative movement of this element 16 in both directions.
    The main part of the element 36 is a cylinder, smooth on the inside and outside and sealed on the outside relative to the housing constriction 11 by means of the lip seal 40, and inside by the edge thickening 34 on the valve device body 18.
    At the rear end of the element 36, the stop 41 is fastened in the form of a lip, directed approximately radially inward. When the amplifier is in a quiescent state, the stop 30 rests on the stop 41. In the space limited by the stops 30 and 41, a dust filter 42 is installed, through which ambient air can flow at least to element 31.
    The non-operating position of the movable components is held by a return spring 43 mounted between the front part 6 of the housing and the element 16 and the developmental force, which greatly exceeds the sum of the efforts of both the springs 32 and 35.
    If the engine of the car equipped with the proposed amplifier.
    The scientific research institute forces the movable partition 2 and, together with it, the element 16 is moved forward by an inconspicuous distance. In this way, air is released from the rear chamber 4 to the front chamber 3 through the radial channel 20, the gap formed between the outer seat 17 and the element 31, and through the channel 19. This continues until the pressure difference between the two chambers decreases as much so that the return spring 43 can return to its original state in which both saddles 17 and 22 are adjacent to the element 31.
    Moving the rod 28 forward to actuate the brakes of the vehicle, leads to the immediate separation of the inner seat 22 from the element 31, which is then pressed by the full pressure of the spring 32 only on the outer seat 17. Therefore, the ambient air without noticeable delay
    element 31 flows through the radial channel 20 into the rear chamber 4. It remains possible to remove air in the front chamber 3, so that the pressure difference in both chambers,
    To increase the driving force, the brake is created from the very beginning of the axial movement of the rod 28 forward.
    With a large stroke length 28
    element 36 is also moved forward, so that there is no obstruction to the movement of rod 28 forward. The space in the housing necessary to accommodate most of the element 36 therein is freed by moving
    权利要求:
    Claims (1)
    [1]
    movable partition 2 and element 16. Claims of the invention
    A pneumatic amplifier, mainly for braking devices of a car, comprising a housing divided by a movable partition into two chambers connected to different pressure sources, a valve device for controlling the pressure differential in said chambers, including a cylindrical part, two concentric seats,
    starts after a long stop on one side of the flat ring, then in the front chamber 3 a new locking element is created, one being vacuum, while in the rear chamber 4 the saddle is made on the power element, initially remains at the atmosphere having a radial channel reporting fer pressure. This difference is the pressure between the seats with one
    the other seat is formed on the plunger mounted slidably in the axial bore of the power element and connected to the control rod, while the valve device is placed in the tubular element protruding outward from the constricted the part of the body in which the tubular element is installed with a seal and the possibility of limited angular displacement relative to the longitudinal axis of the body, a spring is mounted on the control rod, clamping the locking element to the seat am, and the spring placed by the focus on the control rod and the 1-lindrical part of the valve device, which is sealed against the tubular element by means of an annular edge thickening of the tubular diaphragm, integral with the locking element, is cracked - y and with the fact that, in order to reduce the axial dimension, the cylindrical part of the valve device is made in one piece with the power element forming with it the body of the valve device at the end of the tubular element, Inside the amplifier body, a protrusion is inserted into the radial channel of the cylindrical body of the valve device to restrict the axial movement of the tubular element and the body of the valve device, and an outward contact protruding into the outer end of the tubular element stock
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1436865A3|1988-11-07|Pneumatic booster
    US3053235A|1962-09-11|Fluid pressure motor construction
    RU2087348C1|1997-08-20|Automobile brake system actuator
    US4450688A|1984-05-29|Brake booster for automotive vehicles
    US5056413A|1991-10-15|Pneumatic brake booster with two valves for allowing atmospheric air into a variable pressure chamber
    GB2037918A|1980-07-16|Boosted master cylinder assemblies for vehicle braking systems
    US4505114A|1985-03-19|Power booster
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    US4535680A|1985-08-20|Pneumatic servo booster
    US4428274A|1984-01-31|Vacuum booster device
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    US3410179A|1968-11-12|Superatmospheric fluid pressure servomotor
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    US20050087067A1|2005-04-28|Vacuum booster with self-locking diaphragm support
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    US3577832A|1971-05-04|Fluid pressure operated servo devices
    US9975533B2|2018-05-22|Negative-pressure-type booster
    同族专利:
    公开号 | 公开日
    BR8502639A|1986-02-12|
    WO1985005601A1|1985-12-19|
    DE3560559D1|1987-10-15|
    EP0166985A1|1986-01-08|
    EP0166985B1|1987-09-09|
    JPS616058A|1986-01-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3387540A|1962-11-21|1968-06-11|Girling Ltd|Fluid pressure operated boosters|
    JPS5498984U|1977-12-24|1979-07-12|
    DE3018270C2|1980-05-13|1990-07-12|Alfred Teves Gmbh, 6000 Frankfurt, De|
    DE3232664A1|1982-09-02|1984-03-08|Lucas Industries P.L.C., Birmingham, West Midlands|Power amplifier, in particular for actuating the brakes of vehicles|DE3709172A1|1987-03-20|1988-09-29|Teves Gmbh Alfred|VACUUM BRAKE POWER AMPLIFIER FOR MOTOR VEHICLES AND METHOD FOR THE PRODUCTION THEREOF|
    JPH0722369Y2|1987-10-30|1995-05-24|自動車機器株式会社|Brake booster|
    JPH0412851Y2|1987-10-30|1992-03-26|
    DE3740691A1|1987-12-01|1989-06-15|Teves Gmbh Alfred|VACUUM BRAKE POWER AMPLIFIER FOR MOTOR VEHICLES|
    DE3930240A1|1988-10-22|1990-04-26|Teves Gmbh Alfred|Vacuum operated brake servo - has thrust rod located in support sleeve to reduce risk of damage to valve|
    GB2225072B|1988-10-22|1992-07-08|Teves Gmbh Alfred|Vacuum brake booster for automotive vehicles|
    DE3836609A1|1988-10-27|1990-05-03|Teves Gmbh Alfred|Vacuum brake booster|
    DE3900415A1|1989-01-09|1990-07-12|Teves Gmbh Alfred|Partial vacuum brake booster|
    DE3904641A1|1989-02-16|1990-08-23|Teves Gmbh Alfred|VACUUM BRAKE POWER AMPLIFIER|
    DE8908040U1|1989-06-30|1990-10-31|Lucas Industries P.L.C., Birmingham, West Midlands, Gb|
    JPH0386672A|1989-08-31|1991-04-11|Jidosha Kiki Co Ltd|Brake booster device|
    DE4440657A1|1994-11-14|1996-05-15|Lucas Ind Plc|Operating mechanism for motor vehicle brake system|
    EP3282262A1|2016-08-10|2018-02-14|CytoScience SA|Cassette for a microscope, microscope with such a cassette and method of microscoping with such a microscope|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE8417146|1984-06-05|
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