• 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 mechanical brake actuator has rotatable and non-rotatable cam components provided with confronting helical grooves between which ball bearings are arranged to form a helical thrust bearing. A push rod, connecting rod or the like acts generally tangentially on a lever arm on the rotatable cam component for turning the latter. The lateral reaction arising from the lateral force due to the push rod is transferred from the rotatable cam component to the non-rotatable cam component by the helical thrust bearing, thereby avoiding the need to provide a separate journal bearing for the rotatable cam component. The rotatable cam component acts on a tappet member via an axial thrust bearing and an automatic adjuster mechanism.
    公开号:SU799678A3
    申请号:SU782606298
    申请日:1978-04-21
    公开日:1981-01-23
    发明作者:Гренвилл Марджетс Хью；Генри Пейс Чарльз
    申请人:Гирлинг Лимитед (Фирма)；
    IPC主号:
    专利说明:

    (54) EXECUTIVE MECHANISM OF MECHANICAL BRAKE
    one
    The invention relates to mechanical engineering and can be used on vehicles.
    A mechanical actuator for vehicles is known, comprising a pad movement unit made in the form of a cam element rigidly fixed in the housing, and a cam element mounted in the housing can be rotated, with spherical surfaces between which the bodies are mounted. rolling, and the cam element is connected to the rod associated with the reciprocating motion element, as well as the kinematically connected to the displacement unit pusher 1
    However, in such a mechanism, the cam element installed with the possibility of rotation contacts the outer and peripheral surfaces with the body, which leads to significant frictional forces that prevent the cam from rotating, moreover, axial reactions occurring as a result of axial forces applied to the movable cam the element is transmitted to the fixed cam element through a needle thrust bearing that does not withstand large axial forces.
    The purpose of the invention is to increase the reliability of the mechanical brake actuator.
    The goal is achieved by the fact that in the proposed executive mechanism a mechanical brake for vehicles, comprising a pad movement unit, made in the form of a fixed cam rigidly fixed in the housing, and
    5 movable cam mounted in the housing can be rotated, with spiral surfaces on each cam, between which rolling bodies are mounted, and
    0, the movable cam is connected to the rod associated with the Reciprocating Motion Element, as well as the kinematically connected pusher, the rolling elements are made in the form of balls, and the guide grooves for the balls are made on the spiral surfaces of the cam.
    In addition, the movable cam is installed in the housing with a gap, the actuator can be
    provided with an additional pad movement unit, kinematically connected with the first pad movement unit and with the pusher.
    FIG. 1 shows the proposed actuator brakes, a longitudinal section; in fig. 2 - section AA in FIG. one; in fig. 3 shows a part of the section of the part shown in FIG. in fig. 4 - cam ring of the brake actuator in a perspective view; in fig. 5 shows an actuator with an additional block of overlap pads, p-rod in FIG. b - section bb in fig. five.
    The first. Execution option. The actuator includes a housing 1 in which a pad movement assembly is mounted, consisting of a movable cam 2 and a fixed cam 3, an axial thrust bearing 4 in contact with the movable cam 3 and a nut 5 using a flange b, a screw element 7 interacting with the nut 5 screw connection 8, and screws 9..
    The movable cam 2 has a spiral groove 10, and the fixed cam 3 has a similar groove 11 in which the balls 12 are mounted in the separator 13, forming the spiral thrust bearing 14, as well as the plunger 15, kinematically connected with the pad displacement unit. The force from the non-actuating cam 3 is transmitted to the end wall 16 of the housing 1. The movable cam 2 has a lever 17,
    The housing 1 has a protrusion 18 formed with an opening 19. In the housing 1, a stop screw 20 is mounted on which a return cam spring 21 is supported, acting on the lever 22 through the stop element 23 having a convex end 24 entering into the recess 25 of the lever 22, Outer the ring 26 and the inner 27 are mounted concentrically relative to each other and relative to the nut 5. The key 28 enters a groove 29 made in the outer ring 26 .. The outer ring 26 and the inner 27 have, respectively, the friction surfaces 30 and 31, which are in contact with each other using springunloading pads 32 supported on an annular abutment 33. The inner ring 27 co-operates with the nut 5 in the aid of roller elements 34. The return spring 35 of the pusher 15 is installed between the covering element 36 and the flange 6. A screw 37 attaches the pusher 15 to the screw element 7. and a flange 38 is fitted with an elastic rubber coating 39. A spring 40 is mounted on the inner ring 27. A tab 41 is formed on the pusher 15, from which a rod 42 protrudes, located in the channel 43 of the housing 1.
    The target cam 2 is mounted in the housing 1 with a gap relative to the wall 44 of the housing 1. In the channel 45 of the housing 1 there is a disconnecting element 46 having a latch type connection 47. The channel 45 is closed by a lid 48, the second embodiment. The brake actuator contains an additional pad movement unit, which are parallel to each other in the housing 1, consisting of an additional nut 49, which cooperates with an additional screw 50. The nut 5 is equipped with a gear wheel 51 which meshes with gear 52, which in turn is in engagement with the gear 53 mounted on the additional nut 49.
    The movable cams 2 and 54 of the main and additional displacement units have levers 55 connected by a connecting rod 56. The additional movable cam 54 is mounted with a screw 57 on the shaft 58 to the centerline with an additional nut 49 and an additional screw 50. At the end of the shaft 58 there are splines 59 ; A further fixed cam, element 60, is kinematically coupled to the movable additional fist 54.
    The housing 1 is attached to a floating gauge (not shown in the drawing by the holes 61 in the housing 1.
    The device works as follows.
    The actuator has a housing 1 that can be attached to a floating gauge (not shown) with connecting bolts through four holes. The actuator contains a movable cam 2 and a fixed cam 3. The movable cam 2 acts on the axial thrust bearing 4 and the flange 6, which is made on the inner side of the nut 5. The screw element 7 has an irreversible B1; the joint is 8 with the nut 5. The stationary cam 3 is stuck It is connected to housing 1 with screw 9.
    A spiral thrust bearing is formed between cams 2 and 3. The movable cam 2 has a spiral groove 10 on one side, and a fixed cam 3 has a similar complementary groove 11. The support balls 12 are placed in the separator 18 and placed between the cam grooves 10 and 11 so as to form a helical thrust bearing.
    The design is such that when the movable cam 2 rotates in a counterclockwise direction), the cams 2 and 3 move apart with a helical thrust bearing 14. The force generated is transmitted to the nut 5 through the thrust bearing 4, and from the nut 5 through screw element 7 - to the pusher 15, which acts directly on the working gasket (not shown. Directly working gasket is installed so that it connects with one side of the disc brake while this working gasket is The caliber is attached to the housing 1, and this caliber is set so that it is connected to the opposite edge of the disk. Thus, the brake belongs to reaction-type devices, in particular, the reaction force perceived by the cam 3 is applied directly to the end wall 16 of the housing 1. To rotate the movable cam 2, it has a radially protruding lever 16 having a circular recess into which the rounded end of the pusher lever (not shown /. passing through the hole 19 in the wall) can enter rpusa 10 (generally in the tangential direction relative to the moving cam 2). The housing 1 is configured with a protrusion 18 to which an air cylinder can be attached, with the valve moving in the air cylinder being mounted so as to act on the piston rod. The cam spring 21, which rests on the stop screw 20, acts on the lever 22 in the tangential direction through the stop element 23 having a convex end 24, which enters the second circular hinge 25 in the lever 22 located opposite to the elastic recess 25. As the stop element 29, the piston rod, not shown, acting on the lever 22, has a transverse mobility that allows the displacement of the movable cam 2, which occurs during its rotation, to follow in the axial direction. The mechanism, which includes elements 5 and 7, contains a third element made in the form of the outer ring 26 and the inner ring 27, and a key 28, made in the form of a screw, installed radially in the moving cam 2. The inner end of the screw 28 enters with a circular gap in the axial gap or groove 29 formed in the annular element 26 in order to provide a connection between the cam 2 and the element 26 which is maintained during rotation, without causing the elements to move. The amount of movement without rotation determines the desired brake clearance. The outer and inner ring members 26 and 27, respectively, are interconnected, having a frusto-conical shape and a partially spherical shape of the friction surface 30 and 31, which are brought into contact with each other using spring gaskets 32 in such a way that sliding grip is obtained. , the moment of friction of which is predetermined by the force of compression of the spring gaskets 32. Spring gaskets 32 are located between the element 26 and the stop 33 of the ring spring entering the ring groove provided in the inner element 27. A so-called expansion coupling is formed between the inner ring element 27 and the nut 5. The expansion coupling is a one-way coupling and acts like a roller coupling. In other words, the element 27 has a series of internal teeth, which have inclined surfaces that interact with the roller elements 34, which in turn interact with the external cylindrical surface of the nut 5. The return spring 35 of the pusher 15 acts between the covering element 36 attached to the housing 1 and a flange 6, the pusher 15 being connected to the screw element 7 by means of a screw 37. To protect the regulator mechanism between the external flange 38 on the screw element 7 and the cover 36 there is a flexible rubber coating 39. Ina 40 acts between the outer ring element 25 and Kopqys 1, but its effect is much weaker than the action of the spring gaskets 32, so that it simply holds the inner ring element at the flange 6. The eccentrically located rod 42 projects axially out of the foot 41, made on pusher 15, and passes into the inner channel 43, made in the housing 1, preventing the possibility of rotation of the pusher. The pusher 15 is fixed in the flange 38 with a screw element 7 preventing the rotation of the latter. Due to the fact that the force generated in the air cylinder is applied to the movable cam 2, a reaction force builds up, and this reaction sludge must be absorbed by the orpus 1. The reaction force acting in the radial direction is transmitted by the helical thrust bearing 14 due to the fact that not only the axial loads, but also the radial loads of a certain value, the interaction of the balls 13 arranged in the slots 10 and 11.
    Thus, the spiral thrust bearing acts as a thrust bearing for fastening the movable cam at relatively low values of frictional force. Since in this case there is inevitably a small displacement of the movable cam in the radial direction due to the force generated by the air cylinder, the outer diameter of the movable cam 2 is smaller than the diameter of the fixed cam 3, so that there is a gap in the design relative to the inner wall 44 of the housing 1.
    A disconnecting element 46 of the housing 1 is fixed in the through passage channel 45, which has a latch type connection 47 with a nut 6. To turn off the controller, for example, when the broken rods are replaced with new ones, the cover 48 is removed from the passage through channel to allow with the necessary tool, get to the hex head of the tripping element 46, as a result of which you can turn the nut 5 out of the screw element 7.
    A variant of the brake actuator with an additional displacement assembly comprises two mechanical displacement assemblies arranged parallel to each other in the housing 1 for the purpose of applying relatively large braking forces to the brake disc. Nodes and parts similar to those used in the main execution unit of the pad movement are indicated by the same positions. However, only the main mechanical movement unit is equipped with an automatic regulating mechanism. The additional displacement assembly has a regulating device containing an additional nut 49, which is in screw connection with an additional screw 50. The nut 5 of the main angle of movement has a gear wheel 51 attached to it and meshes with the intermediate gear 52, which, in turn is engaged with the gear 53 mounted on the nut 49. The nut 49 is automatically involved in the adjustment process, which affects the nut 5.
    The movable cams 2 and 54 of the main and additional displacement units have levers 55, which are interconnected with each other by means of a connecting rod 56. The movable cam 54 of the additional displacement unit is connected with a screw 57 to the input shaft 58, which is mounted in the housing 1 on one axes with an additional nut 49 and an additional screw 50. At the end of shaft 58, splines 59 are made, with which element 58 can be rotated from an external source, for example, from an air cylinder and a crankshaft system. The rotational movement transmitted to the additional cam 54 by the input shaft 58 is communicated to the movable cam 2 by the connecting rod 56. As in the first embodiment, the reaction forces arising from the forces applied to the cams 54 by the connecting rod 56 are transmitted to the fixed cams 60 using helical thrust bearings 14.
    5 Cams 2 and 3, as well as 54 and 60
    can be made by cold forging or sintering or by means of hot forging, and spiral curtain tracks 10 and 11, having an arch cross-section in cross section, can be made by means of coining or machining. Another option for making cam rings is to grind them out of a solid bar. Another embodiment for the manufacture of these elements is the manufacture of initially inclined planes having a partially rounded shape, which are flat, for example by
    0 extrusion, and then bend in length and fold so that they take on a spiral shape. In this latter version, the partially rounded inclined planes
    5 are supported by spiral cam rings and secured in such a way that their relative displacement does not take place.
    权利要求:
    Claims (3)
    [1]
    1. Mechanical brake actuator for vehicles containing a movement assembly
    blocks, made in the form of a fixed cam rigidly wedged in the housing, and a movable cam mounted in the housing can be rotated, with spiral surfaces on each cam, between which rolling bodies are installed, and the movable cam connected to element of the return movement, as well as kinematically connected with the displacement unit
    a pusher, characterized in that, in order to increase reliability of operation, the rolling bodies are made in the form of balls, and guide grooves for balls are made on the spiral surfaces of the cams.
    [2]
    2. The mechanism according to claim 1 is also distinguished by the fact that the movable cam is installed in the housing with a gap.
    [3]
    3. Mechanism on PP. 1 and 2, d 65, because he
    provided with an additional pad movement unit, kinematically connected with the first pad movement unit and with the pusher.
    Sources of information taken into account in the examination
    1. Patent of Great Britain No. 1492392, cl. F 2 E, 1975 (prototype). H
    799678 A-A.
    "
    60
    Pue.s
    15 il
    类似技术:
    公开号 | 公开日 | 专利标题
    SU799678A3|1981-01-23|Executive mechanism of mechanical brake
    US3991859A|1976-11-16|Adjusting mechanism for a disc brake caliper assembly
    US4056173A|1977-11-01|Automatic slack adjuster for vehicle brakes combined with a hydraulic actuator and auxiliary mechanical actuator assembly
    JP5334571B2|2013-11-06|Wheel brake
    SU976861A3|1982-11-23|Vehicle disk brake
    US5086884A|1992-02-11|Disc brake caliper assembly
    US5219047A|1993-06-15|Disc brake caliper assembly
    WO1997029298A1|1997-08-14|Brake wear sensor
    US3835961A|1974-09-17|Disk type brake
    US3967705A|1976-07-06|Application adjuster for disc brake
    US3995722A|1976-12-07|Fail-safe disc brake having a slack adjuster mechanism
    US4611691A|1986-09-16|Hydraulic actuator assemblies for vehicle brakes
    US4014411A|1977-03-29|Mechanically actuated disc brake with self adjusting feature
    US4380277A|1983-04-19|Automatic slack adjusters for vehicle shoe-drum brakes
    GB2173873A|1986-10-22|Disc brakes
    US4660684A|1987-04-28|Disc brake with automatic adjustment
    US3734242A|1973-05-22|Annular, antipodal, relatively-separable brake
    CS259865B2|1988-11-15|Disk brake for vehicles
    US4228875A|1980-10-21|Mechanical disc brake
    US4629038A|1986-12-16|Disc brake with automatic adjustment
    US4358002A|1982-11-09|Spreading disc brakes for vehicles
    US6997291B2|2006-02-14|Vehicle disk brake with a motion converter
    US4635760A|1987-01-13|Disk brake with automatic adjustment
    US4026394A|1977-05-31|Vehicle shoe-drum brakes of the duo-servo type
    SU1323789A1|1987-07-15|Disc brake
    同族专利:
    公开号 | 公开日
    IT1101995B|1985-10-07|
    DE2817389A1|1978-11-02|
    JPS53137379A|1978-11-30|
    BR7802462A|1978-12-05|
    IT7849041D0|1978-04-24|
    US4429768A|1984-02-07|
    FR2388169A1|1978-11-17|
    AU3499378A|1979-10-18|
    HU178000B|1982-02-28|
    GB1595492A|1981-08-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    RU2651963C1|2014-08-21|2018-04-24|Кнорр-Бремзе Зюстеме Фюр Нутцфарцойге Гмбх|Disc brake adjustment device and disc brake with the said device|US3547233A|1968-09-23|1970-12-15|Minnesota Automotive Inc|Pressure and wear compensator for caliper disk brake|IN150531B|1978-04-08|1982-11-06|Girling Ltd|
    BR8000881A|1979-02-14|1980-10-21|Kelsey Hayes Co|SLACK ADJUSTER, BRAKE MECHANISM AND CALIBER BRAKE DRIVER|
    FR2554194B1|1983-10-28|1986-01-17|Dba|AUTOMATICALLY ADJUSTABLE BRAKE MOTOR|
    FR2564925B1|1984-05-23|1986-10-03|Dba|AUTOMATICALLY ADJUSTABLE DISC BRAKE|
    FR2576650B1|1985-01-25|1987-03-20|Bendix France|AUTOMATICALLY ADJUSTABLE BRAKE MOTOR|
    GB8627217D0|1986-11-14|1986-12-17|Lucas Ind Plc|Bearings|
    DE8633923U1|1986-12-18|1988-04-21|Lucas Industries P.L.C., Birmingham, West Midlands, Gb|
    DE3812037A1|1988-04-11|1989-10-26|Perrot Bremse Gmbh Deutsche|MECHANICALLY ACTUATED SLIDING CALIPER DISC BRAKE|
    DE4034165A1|1990-06-07|1991-12-12|Knorr Bremse Ag|DISC BRAKE FOR VEHICLES|
    GB9100944D0|1991-01-16|1991-02-27|Lucas Ind Plc|Brake actuator|
    DE4204307A1|1992-02-13|1993-08-19|Knorr Bremse Ag|ROTARY DRIVE FOR A SPINDLE DISC BRAKE FOR VEHICLES|
    US5379867A|1992-05-08|1995-01-10|Deutsche Perrot-Bremse Gmbh|Re-adjusting mechanism for a disc brake|
    DE4307017C2|1992-05-08|2002-03-07|Perrot Bremse Gmbh Deutsche|Adjustment device for a disc brake|
    DE19636943A1|1996-09-11|1998-03-12|Perrot Bremsen Gmbh|Caliper disc brake|
    US5722516A|1996-11-12|1998-03-03|Meritor Heavy Vehicle Systems, Llc|Disc brake with rigid connection between load plate and adjusting piston|
    DE10333268B4|2003-07-21|2008-04-03|Ab Skf|Device for converting a rotational movement into a translatory movement|
    US7635050B2|2004-07-29|2009-12-22|Ntn Corporation|Electric brake assembly|
    DE102004037771A1|2004-08-04|2006-03-16|Knorr-Bremse Systeme für Nutzfahrzeuge GmbH|Adjustment device for a pneumatically actuated disc brake|
    WO2009089594A1|2008-01-18|2009-07-23|Air Road Distribution Pty Ltd|Brake actuator|
    US20130068057A1|2011-09-16|2013-03-21|Hamilon Sundstrand Corporation|Idler gear assembly for a generator|
    US10138947B2|2017-02-16|2018-11-27|GM Global Technology Operations LLC|Radially applied dog clutch with bi-directional ratcheting for a vehicle transmission|
    US20190337539A1|2018-05-07|2019-11-07|Jiangxi Huawu Brake Co., Ltd.|Compact brake actuator for railway vehicles|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB16763/77A|GB1595492A|1977-04-22|1977-04-22|Brakes|
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