• 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:
    This invention relates to vehicle braking systems. in particular, to vacuum amplifiers. The purpose of the invention is to reduce the weight of a structure. The amplifier comprises a housing divided by a partition into two sections in which diaphragms and separation chambers are located. The stencil and corulus are connected by hollow extensions and in the central part there is a tubular element. During operation of the amplifier, the camera communicates with a vacuum source and through the cavity of the tubular element to the camera, and the camera communicates with the camera through the cavity of the tubular element. . 1 hp ff, 4 ill. SO B9 eat co od cn
    公开号:SU1259960A3
    申请号:SU2766946
    申请日:1979-05-18
    公开日:1986-09-23
    发明作者:Вильям Томас Альфред
    申请人:Гирлинг Лимитед (Фирма)；
    IPC主号:
    专利说明:

    This invention relates to vehicle brake booster amplifiers.
    The purpose of the invention is to reduce the mass of the structure.
    FIG. the brake booster is shown in the retracted position of the exploded walls of the longitudinal section J; in FIG. 2, an amplifier, co, e. one with a main brake cylinder, longitudinal section; in fig. 3 and 4 - modification of the amplifier.
    The amplifier of FIG. 2 includes a housing 1 formed from four thin-walled steel forged parts. The periphery of the end walls 2 and 3 are connected by a cylindrical element A with the help of elements 5 interacting with each other. The stamped part forms a dividing fixed partition 6 fixed in the middle between the walls 2 and 3.
    Each of the movable walls, the first 7 and the second 8, has a support plate 9 or 10, on which resilient diaphragm 11 or 12 rests. the outer thickened edge 13 of the diaphragm 11 is clamped between the wall 3 and the cylindrical element 4, and the corresponding edge 14 of the diaphragm 12 is clamped between the wall 2 and the peripheral section of the partition wall 6, To the supporting plate 1 O, the diaphragm is welded with a reversed steel stamped bowl 15 , on which the inner edge 16 of the diaphragm 12 is sealed. On the plate 9, the inner edge 17 of the diaphragm 11 is supported, wrap around the rear-facing tubular protrusion 18, which, in turn, engages the head 9 of the cylindrical body 20 paw and punching circumferentially spaced protrusions 21, 18 hold the edges 17,
    The first 22 and second pressure chambers 23 are formed by the first movable wall 7, respectively, with wall 3 and with a partition wall 6, and the third 24 and fourth 25 pressure chambers are formed by a second movable wall 8, respectively, with a partition wall 6 and wall 2. In idle state, the chamber amplifier 22-25 are connected to a vacuum source, and in working condition, chambers 22 and 24 are connected to the atmosphere.
    599602
    Two diametrically protruded about placed -1x of the node 26 and 27 of the struts pass axially through the body, through both movable walls 7 and 8 and the fixed 5 partition wall 6. Each node contains the same tube 28 located between facing each other the inner surfaces of the walls 2 and 3 and the radial holes 29 and 30 spaced apart along the axis. The holes 29 and 30 of the node 26 of the spacer are connected to the chambers 23 and 25, respectively, and the inner channel of the tube together with the holes 29 5 and 30 The gap between these two Article E. The tubes 28 of both assemblies are located in opposite directions, therefore the holes 29 and 30 of the crossbar assembly 27 are displaced relative to the holes 29 and 30
    node struts 26 and provide communication between cameras 24 and 22.
    Each of the diaphragms 11 and 12 of the movable walls 7 and 8 is made in one piece with two tubular eversible portions 31 provided with annular thickened edges 32 entering the respective annular grooves 33 of the tubes 28 and sealing the movable walls relative to the tubes. Separating partition 6 is sealed relative to each of the tubes 28 by a ring sealing element 34 held by the corresponding flange 35 of the partition 6 facing backwards 35,
    The displacement of the partition wall 6 backwards relative to the tubes 28, which may occur due to overpressure existing on different sides of the partition during the operation of the amplifier, is prevented by retaining rings 36 interacting with the rear surfaces of the sealing 45 elements 34 and held in the annular grooves 37 pipes 28. Due to this, the partition wall can be made less durable and lighter than what would otherwise be necessary.
    Each of the tubes 28 in the rear part is closed by a pin 38, the front end of which has an external thread for a nut securing the body of the reinforcement 55 l to the vehicle partition. The middle part of the stud 38 is riveted on the shell of the case and thus fixes the tube 28 on the amplifier body,
    The front end of the lower tube 28 is shown by a closed modified stud 39, which is provided with an elastic sealing element 40j that seals the housing when the stud 39 is attached to the main brake cylinder flange 41.
    The front end of the veggie tube 28 is provided with a nozzle 42, which is connected to a vacuum source (not shown). The fitting 42 has a hexagonal section 43 intended to grip the fitting 42 into the tube 28 and fasten to the main cylinder cylinder flange 41, KOTopb is clamped between section 43 and the wall 2 of the housing, and the seal 44 performs the same function as the resilient sealing element 40,
    The input rod 45 passes through the air filter 46 held in the rearward facing part 47 of the valve body 20, and interacts with the input piston 48 of the reactive assembly 49, which includes the reactive elastic disk 50 and the head 51 of the output core 52, This assembly contains two rods 53 and 54 connected by a screw with a thread 55, with the supporting plate 10 of the second movable wall 8 clamped between them, and the overall length of the output core assembly is regulated by the gaskets 56. A spring 57 is inserted between the wall 2 and the support plate 10, which provides a return force for both the movable walls and the rod 45,
    The lift valve assembly 58 comprises an axially compressible valve element 59 that interacts with the first annular seat 60 of the rear end of the inlet piston 48 and with the second annular seat 61 on the head 19, when the input rod is. 45 is in the designated positions, the valve element 59 interacts with the first seat 60, isolating the opening 62, which is connected to the atmosphere, from the radial hole 63 in the head 19, fed into the chamber 22, n is located at a distance from the second saddle 61, whereby Provision of communication between chambers 22 and 23 using holes 64 and 63, Since chamber 22 is permanently connected to chamber 24 by means of the cavity of the lower tube 28 and from the bridges 29 and 30, and chambers 23 and 25 are also connected to the top
    ten
    20
    25
    itS
    so,

    2599604
    The tube 28 between them, the PSU of the pressure chamber is under vacuum, since the fitting 42 is connected to a vacuum source during operation. 5 When the input rod 45 is displaced forward, element 59 interacts with the second seat 61 and moves away from the first seat 60, admitting atmospheric air into the camera 22, and therefore, into the chamber 24 through the opening 63 and the inlet opening 62,
    A seal assembly 65 held at the rear of the housing wall 3 seals the wall 3 and the valve housing 20. A further reversing diaphragm 66 seals the partition wall 6 against the stem 53,
    The work units 27 and 26 during operation are means for transferring the reactive amplifier from the master brake cylinder to the vehicle partition wall and for keeping the walls 2 and 3 of the body from being moved in opposite directions from each other. Due to this, walls 2 and 3 of the hull can be made less durable and lighter.
    The rear half (FIG. 2) of the tandem hydraulic master brake cylinder assembly 67 is mounted in a housing 68 controlled by a pedal of a vacuum tandem brake booster 69. The amplifier body 68 has a front molded plastic 70 and a rear shell 71 and an intermediate shell 72 that is integrally formed with a partition wall 73 extending across the axis of the amplifier. The shells 70 to 72 are interconnected by latches 74 and 75, and clamped between each other, the peripheral, thickened edges 76 of the elastic diaphragms 77 and 78, respectively, of the front and rear nodes of the movable walls 79 and 80,
    The movable walls 79 and 80 have annular support plates 81 and 82 of diaphragms molded from plastic, while the plate 81 is in the inside with a cylindrical bushing 83 protruding forward, and the back plate 82 is molded in one piece with the cylindrical valve body 84 fitted with waste back the protrusion 85, in which is located the node 86 of the lifting valve. The valve housing 84 is sealed relative to the rear shell of the housing 71 annular
    0
    five
    a seal 87 sliding along the outer surface of the protrusion 85 and made integrally with the cover 88.. Moving walls 79 and 80, as well as a fixed dividing wall 73 divide the amplifier body into four cameras 89–92. A pair of fixed elements for transmitting an amplifier made in the form of a spacer 93 {only one element is shown} passes axially through the shells 70 - 72 through both movable walls 79 and 80, and these spacers are installed diametrically opposite to the axis of the amplifier. Each of the spacers 93 has a tubular middle part 94, the studs 95 and 96 are screwed into the opposite ends of the threads, and the outer cut sections 97 and 98 of these studs protrude out of the body of the amplifier 69 and are connected respectively to the flange 99 of the main brake cylinder 100 and to the partition vehicle (not shown),
    The elastic diaphragms 77 and 78 are made identical and are molded in one piece with the eversible portions 101 and 102, which are provided with annular thickened edges 103 and 104 installed in annular grooves formed in the outer surface of the spacers 93. The edge 103 abuts against the rear end of the orerenny sleeve 105, integral with the front shell 70, providing a seal of the front end of the spacer 93 and the shell 70 and the chamber 89 relative to the chamber 90. The seal 104 separates the chambers 91 and 92, and on the pin 92 there is a separate seal 106, sealing the rear end of the spacer 93 relative to the rear shell 71. The silver sleeve 105 serves as a support for the diaphragm 101 when the front movable wall 79 is displaced forward, and the diaphragm 102 of the rear movable wall 80 rests on a set of circumferentially spaced ribs 107 extending backward from the rear wall 73 shells 72 and made together with it. The spacers 93 are sealed to the partition wall 72 by annular seals 108.
    In order to provide communication between the chambers 90 and 92, the spacers 93 are provided with axially spaced transverse through-holes 0
    five
    0
    five
    five
    0
    five
    1 MI 109 and 110, and the spacers 93 are located the same as in the design shown in figure 1.
    The master brake cylinder 67 maintains the main piston 111, which is integral with the output rod of the booster 112, and the auxiliary piston I13, connected to the main piston 1 1 1 by connecting 114 with a backlash, and the spring 115 displaces the pistons into different parties. An annular seal 116 is held in the bore of the rear end of the main brake cylinder body 100 and with an I-shaped stopper 117 defining the retracted position of the main piston 111, and hence the piston 113, and the force for discharging the main piston 1II is provided by a spring 118 abutting the front end of the shoulder 119 body 100, and the rear end - in the flange 120 of the head 121, fixed in the cavity 122 to the rear end of the output rod 112,
    The stepped tubing element 123 has sections 124 and 125, respectively, of larger and smaller diameter, with a larger diameter section 124 being coaxial with the output rod 112 and rigidly fixed with a front end to the sleeve 83 using an outwardly directed flange 126 and stamped outside section 127, the inlet The sleeve 83, the O-ring J.29 seals the sleeve 83 against the tubular element 123 to insulate the chambers 89 and 90, and section 124 of the tubular element 123 has a sliding seal with respect to p separating partition 73 by means of an annular seal 130 located in an annular groove 131, molded in one piece with the partition 73,
    Section 125 of a smaller diameter of the tubular element 123 slides in the bore 132 of the front end of the valve body 84, and the head 121 enters it. In the internal flange 133 part-: 125, there is a hole in which the front end 134 of the control valve element 135 is connected with the pedal-operated input rod 136, As usual, the rear end of the control valve element 135 is coaxial.
    0
    0
    five
    valve seats 137 and 138, which are attached to the annular head of the lift valve assembly 86.
    The communication between the chambers 89 and 91 is provided by the internal cavity of the Section 124 of the tubular element 123 and a set of circumferentially spaced holes 139 axially directed and made in the step between the sections 124 and 125 of the element 123. Due to the relatively large diameter of the section 124, a short time to equalize the pressure in the chambers 83 and 91, when the pressure in the chamber 91 changes under the influence of the lift valve assembly 86 through the passage 140 in the valve housing 84.
    Moving walls 79 and 80 are not rigidly connected to each other. If the rear wall 80 is wedged in the housing, then the front wall 79 is activated, providing reinforcement, since the wall 79 can move in the axial direction relative to the rear wall. The circular ring 141 is mounted in the outer groove of the section 125 of the tubular element 123 and provides a sliding seal of the section 25 relative to the housing 84 with respect to the movement of the walls 79 and 80 while simultaneously sealing the chambers 91 and 92 relative to each other.
    The spring 118 tends to return both movable walls 79 and 80 to their allocated position in addition to discharging the pistons 111 and PZ-(FIG. 3),
    The main difference between the devices (Figs. 3 and 2) is that the tubular element 123 is made in one piece with the sleeve 83 of the front wall of the housing, while the section 124 has reinforcing ribs passing inside, in the section 124 of the tubular element 123 are spaced apart circumference of aperture 139, as well as in how a jet disk 143 is installed. In this embodiment, a portion 125 of a smaller diameter of a tubular element 123 has a blind end wall 144 that slides in a valve body opening 132, and an elastomer jet disc 143 installed between an end wall 144, a front part of the sleeve 145 mounted in the bore 132, and a front side 134 of the control valve element 135. At the rear end of the end,
    the interlock rod 112 is made in one piece with it a head 121, mounted in the opening of the section 125 of the tubular element 123 and cooperating with the blind end wall 144 through the metal gasket 146.
    The force developed by the front movable wall 79 is transmitted directly to the output rod 112 by a blind end wall 144 and does not act on the jet disk 143, which perceives only the force developed by the movable wall 80 and transmitted
    15 to the output rod 112 of the sleeve 145, the jet disk 143 and the end wall 144.
    Therefore, the force created by the operation of the elastomeric disk
    20, which acts on the front end 134 of the control valve element 135, creates a reactive force at the input rod I36, and solely due to the force developed by the rear movable wall 80, and regardless of the force developed by the front mobile wall 79.
    In the device (FIG. 3), there is no seal equivalent to the seal 141 (FIG. 2), since the jet disk seals the chambers 91 and 92 relative to each other.
    thirty
    35
    40
    45
    55
    B modification of the proposed device, the tubular element 123 is made in one piece with the sleeve 83 of the front of the movable wall 79, the jet disk 143 transmits the total force developed by both movable walls 79 and 80,
    权利要求:
    Claims (2)
    [1]
    Invention Formula
    I. Brake booster, comprising a housing with front and rear end walls, separated by a fixed partition into two sections, a first movable wall with a diaphragm and a support plate, located between the rear wall and the rear side and separating the first vacuum and the first atmospheric. the first section of the body, the second feat. a diaphragm wall and a support plate located between the front wall and the partition and separating the second vacuum and second atmospheric chambers of the second section of the housing, controlling the regulating
    thirty
    B modification of the proposed device, the tubular element 123 is made in one piece with the sleeve 83 of the front of the movable wall 79, the jet disk 143 transmits the total force developed by both movable walls 79 and 80,
    Invention Formula
    I. Brake booster, comprising a housing with front and rear end walls, separated by a fixed partition into two sections, a first movable wall with a diaphragm and a support plate, located between the rear wall and the rear side and separating the first vacuum and the first atmospheric. the first section of the body, the second feat. a diaphragm wall and a support plate located between the front wall and the partition and separating the second vacuum and second atmospheric chambers of the second section of the housing, controlling the regulating
    a valve of the inlet element, an outlet element connected to the first movable wall, a tubular element installed with a seal and the possibility of axial movement in the central opening of the partition, rigidly connected with the base plate of the first movable wall and interconnecting two chambers of the housing sections, and channels for communicating with each other other chambers of the same section of the hull section, which is due to the fact that, in order to reduce the mass of the structure, the caps connecting the same-name chambers of the hull sections, made in struts connecting the front and rear walls of the casing and passed through with a seal in the opening 10
    made in movable walls and a fixed partition, and communicated with these chambers through radial holes, while the vacuum chambers are connected to each other through the tubular element,
    [2]
    2. The amplifier according to claim 1, 1, O TL and H aa y and with the fact that the tubular element is made in one piece with the support plate of the first movable partition,
    P r and o r and tet on a pun to - there:
    20.05.78 according to Clause 1, in addition to the feature, vacuum chambers are interconnected via a tubular element, having priority from 18.10.78, 18, 10..78 according to claim 2,
    "
    Vj
    "N
    70
    7 /
    Fig.Z
    80
    Figm
    Editor Oh, Golovach
    Compiled by S. Makarov
    Tehred A. Kravchuk Proofreader A. Tsko)
    Order 5143/60 Circulation 647. Subscription
    VNINPI USSR State Committee
    for inventions and discoveries 13035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, st. Project, 4
    类似技术:
    公开号 | 公开日 | 专利标题
    SU1259960A3|1986-09-23|Braking system booster
    CS264254B2|1989-06-13|Servo system for vehicle brakes system
    US4450688A|1984-05-29|Brake booster for automotive vehicles
    US4069742A|1978-01-24|Power brake booster system
    US4117769A|1978-10-03|Vacuum booster
    US3289547A|1966-12-06|Fluid pressure servomotor
    US4499812A|1985-02-19|Servo-motor for power-assisted braking
    US4338854A|1982-07-13|Servo boosters for vehicle braking systems
    US4469009A|1984-09-04|Pneumatic booster
    GB2031086A|1980-04-16|Brake boosters
    US4286501A|1981-09-01|Servo boosters for vehicle braking systems
    US4377966A|1983-03-29|Servo boosters for vehicle braking systems
    US4522108A|1985-06-11|Vacuum booster device
    JP2540050B2|1996-10-02|Pneumatic brake booster
    GB2092251A|1982-08-11|Vacuum booster assembly
    US4270438A|1981-06-02|Servo boosters for vehicle braking systems
    US4428274A|1984-01-31|Vacuum booster device
    US3420145A|1969-01-07|Fluid pressure servomotor
    DE19620200A1|1996-12-12|Vacuum brake assister for vehicle
    KR100311983B1|2001-12-28|Pneumatic Actuated Booster for Vehicle Braking System
    KR920006887Y1|1992-09-28|Seal unit for brake booster
    US4738108A|1988-04-19|Brake power servo booster
    JP5078796B2|2012-11-21|Negative pressure booster
    US4114377A|1978-09-19|Master cylinder assembly
    EP0040945A1|1981-12-02|Boosted master cylinder assemblies for vehicle braking systems
    同族专利:
    公开号 | 公开日
    DE2920249A1|1979-11-22|
    AU4724179A|1979-11-22|
    AU535036B2|1984-03-01|
    ES480732A2|1980-07-01|
    DE2920249C2|1990-09-20|
    FR2432412B2|1985-09-27|
    US4256016A|1981-03-17|
    FR2432412A2|1980-02-29|
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    GB2069638B|1980-02-12|1983-10-05|Lucas Industries Ltd|Master cylinder and servo booster assemblies for vehicle braking systems|
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    DE102004014930B3|2004-03-26|2005-12-15|Lucas Automotive Gmbh|Tandem vacuum brake servo assembly for road vehicle has single housing containing two servo units with rigid common partition and movable pistons pushed toward vacuum chambers|
    DE102006016545B3|2006-04-07|2007-05-16|Lucas Automotive Gmbh|Braking force boosting device for vehicle brake system, has chamber arrangement with vacuum chamber and operating chamber that is separated over barrier, and damping units engaged at spring, where units are attached at clamping bolt|
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    FR2944762B1|2009-04-22|2016-03-11|Bosch Gmbh Robert|SERVOMOTOR AND METHOD FOR MOUNTING|
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    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB2099278|1978-05-20|
    GB7841038|1978-10-18|
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