• 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:
    Valve for controlling a power-assisted rack-and-pinion steering mechanism, of the slide-valve kind, whose slide member 11 moves along an axis different from that of the pinion 1 as a result of the axial movement of the pinion produced by the thrust exerted on it by the rack because of the inclination of its teeth, said slide member being connected to the pinion through a kinematic mechanism with a high transmission ratio consisting of a rubber ring, all outer surfaces of which are enclosed by rigid walls, a push-rod 10, and resilient means pressing one against the other said rubber ring, push-rod and slide member in such a way that the displacements of the slide member is given by the displacement of the pinion multiplied by the ratio between the area of the rubber exposed to the axial thrust acting on the pinion and the area of the cross-section of push-rod 10.
    公开号:SU1296001A3
    申请号:SU853866308
    申请日:1985-03-15
    公开日:1987-03-07
    发明作者:Кордиано Этторе
    申请人:Коринт С.Р.Л.(Фирма)；
    IPC主号:
    专利说明:

    The fluid element of the control valve of the system. This is achieved by means of a transmission that includes a piston 11, mounted for axial movement with a helical gear, and an additional camera 12, filled with a non-compressing 1m deforming 1HL with material (oil or lubricant) or rubber. This material is designed to transfer the control pressure to the moving element of the controlled valve through the flow 18, which can be made integral with the moving element II31 as separately). The additional chamber 12 is located at one end of the cylindrical chamber 9 of the crankcase 2, in which the piston I is mounted for movement, the piston is located in the axial position between the compartment 2 of the change1
    The invention relates to control of vehicles with a rack and pinion steering mechanism.
    The purpose of the invention is to simplify the design.
    Fig. 1 shows a steering mechanism with a rod in which the rod is mounted for displacement in a direction perpendicular to the shaft axis; Fig. 2 shows the same, in which the rod is connected to the additional chamber through a channel dispensed into the body of the steering mechanism; fig. 3 - the same, in which the rod is installed with the possibility of movement in a direction parallel to the axis of the shaft in the housing shell; figure 4 is the same as figure 3, but non-compressible deformable
    material in the additional chamber
    is a rubber.
    The rack and pinion steering gear 1 comprises a crankcase 2 having a channel 3 for the rack 4, the latter engaging with a sprocket wheel 5, formed on the shaft 6, which must be controlled by the steering wheel of a vehicle with an engine through a transmission of a known type. The shaft 6 is mounted for rotation in the housing of the
    volume and the end of the shaft 6 carrying the helical gear 5. When the additional chamber J2 is filled with liquid, the sealing means is installed between the piston 11 and the wall of the cylindrical chamber 9 and its sliding fit is made so as to separate the chamber from the external medium. For example, from two sealing rings 19, 24, installed on the outer surfaces of the piston 11 and stem 18, respectively, or, for example, from two deformable diaphragms, fixed by side surfaces on the wall chamber 9, and pressed against the central portions of the piston rod 11 and 18 respectively under the action of the fluid comprised within the further variable volume chamber 12, zp 7, f ly-4-yl.
    .
    0
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    bearings 7 and 8, which allow axial movement of the gear wheel 5 relative to the crankcase 2. The bearing 8 is mounted slidable in the cylindrical chamber 9 of the crankcase 2 and is pressed by the cup springs 10 to the annular piston 11, which is located on the shaft 6, the piston 11 and the cylindrical wall chamber 9 forms an additional chamber 12, which is filled with an incompressible deformable material, for example, oil or grease. The bearing 8 is mounted on the shaft 6 by means of a locking ring 13. The crankcase 2 includes a body 14 of a control valve 15, which is part of a mechanical steering system. The control valve 15 includes a movable element 16 (not shown) which is installed slidably in the auxiliary chamber (not shown, which is located with its axis perpendicular to the axis of the shaft 6, Carter 2 is closed with a knuckle 17, Rod 18 is installed with the possibility of sliding movement the crankcase 2 along the axis of the auxiliary chamber. The rod 18 is installed between the additional variable volume chamber 12 and the movable element 16, the Additional chamber 12 is separated from the rest of the cylindrical chamber 9 by means of a sealing tsa 19 mounted between the piston 11 and the walls of the cylindrical chamber 9 .koy, piston
    11 has a shape and size that if there is a leak
    from additional chamber 12, it moves to the position of its end of travel to crankcase 2, and in this position its outer surface contacts with rod 18, preventing the latter from entering the additional chamber
    12 under the action of a spring (not shown) and unexpected for the driver to actuate the mechanical steering.
    Belleville springs 10 are installed in the axial direction between the outer ring of the bearing 8 and the annular shoulder 20, made in the wall of the cylindrical chamber 9.
    KpitBBKa 17 is fixed to the housing of the crankcase 2 by means of screws 21.
    The steering mechanism (Fig. 2) differs in the 25 compartment. It can communicate with the outer zone. The tube is inserted into this fluid inlet (oil or grease) to fill the compartment. After filling, the channel is locked from the system of FIG. Only by the fact that the rod 18 is set at a distance of jO is burrowed with the help of local welding from the additional chamber 12 with possible or glue and a combination of two diaphragm joints with it through channel 22. At the same time stem 18 is limited in housing 14 to shoulder 23,
    and the fluid enclosed therein is installed as one piece in the crankcase 2 on the assembly line, eg. During operation of the mechanism, sealing is provided by pressing the cap 17 to the housing 2, in addition to welding or gluing the two diaphragms.
    and a seal ring 24 is installed on the I8 stem.
    The steering mechanism (FIG. 3) differs from the system of FIG. 1 in that, instead of the sealing ring 19, sealing means is associated with the piston 11 (Contains a deformable diaphragm 25 clamped along its side surface between the crankcase 2 and the cover 17, and its central part
    and the fluid enclosed in them is installed as one piece in the crankcase 2 on the assembly line, eg. During operation of the mechanism, it is sealed by pressing the cap 17 to the housing 2, in addition to welding or gluing two diaphragms.
    In the steering mechanism (FIG. 4), an additional 40 chamber 12 is filled
    rubber element 27 in the form of a disk
    The movement of the rod 18 is achieved by stretching along the circumference of the rubber ring in the nap
    attached to the piston P. A stem 18 of the zone, in which the rod is mounted to move axially parallel to the axis coinciding with the axis of the shaft 6, and instead of the sealing ring 24 (FIGS. 1 and 2) sealing means associated with the rod 18, contains a deformable diaphragm 36, also clamped along its lateral surface between the body of the chassis 2 and the lid 17, and its central part is connected to the end surface of the rod 18, which faces the additional chamber 12.
    In the steering mechanism (FIG. 3), the guarantee of an accidental triggering of the steering position is guaranteed. For a given ring shape of the rubber element and a significant distance of the rod from the zone of the rubber ring, which is located
    50 diametrically opposed to the rod, stretching along the circumference of the rubber ring is difficult to achieve and requires considerable effort on the piston. Rod 18 is in the center
    55 discs of the rubber element 27 and the distance of those that are the most distant from the rod 18 is limited. The rubber element 27 is pulled out when the piston is moved.
    control in the event of leakage of fluid from the additional chamber I2 is due to the fact that whenever such a condition occurs, the piston 11 is supplied by the axial force of the spring 10 to the edge 17 and prevents the rod 18 from entering
    The control mechanism may comprise two sealing means associated simultaneously with the piston.
    and a rod made in the form of two deformable diaphragms 25 and 26, the latter can be welded to each other or glued along their annular side surfaces, which should be clamped between the crankcase 2 and the cover 17 "Welding or gluing the two side surfaces is carried out along all these perimeters rings except
    zone having a width in the direction of the circumference of a few millimeters. Therefore, in this zone, a channel is formed through which the formed between the two diaphragms
    the compartment may communicate with the outside zone. The tube is inserted into this fluid inlet channel (oil or grease) to fill the compartment. After filling, the channel is closed using local welding or glue and a combination of two diaphragms.
    snuffed by local welding or glue and a combination of two diaphragms
    and the fluid enclosed therein is installed as one piece in the crankcase 2 on the assembly line. During operation of the mechanism, sealing is provided by pressing the cap 17 to the housing 2, in addition to welding or gluing the two diaphragms.
    In the steering mechanism (FIG. 4), an additional chamber 12 is filled
    rubber element 27 in the form of a disk.
    The movement of the rod 18 is achieved by stretching along the circumference of the rubber ring in the direction of the zone in which the rod
    located. For this annular shape of the rubber element and a considerable distance of the rod from the area of the rubber ring, which is diametrically opposite to the rod, stretching along the circumference of the rubber ring is difficult to achieve and requires considerable effort on the piston. Rod 18 is in the center
    rubber piece suit 27 and the distance of those most distant from stem 18 is limited. The removal of the rubber element 27, which occurs when the piston is moved, j,
    it is predominantly radial and therefore occurs much lighter and at much lower loads on the piston 11.
    FIG. another possible arrangement of elastic means is shown which presses the piston 11 in the direction of the additional chamber 12. The bearing 7, like the bearing 8, is a ball bearing and elastic means which presses the piston 11 in the direction of the additional chamber 12, contains a pair of cup springs 28, installed between the outer ring of the bearing 7 and the end wall 29 of the cylindrical chamber 9 located at the end opposite to the additional chamber 12. The inner ring of the bearing 7 receives the force of the annular shoulder 30 formed on the shaft 6, and thus contributes to the transfer of axial force applied by the spring 28 to the piston II through the shaft 6 and the bearing B. The device works as follows
    in a way. I
    The spring 10 holds the non-compressible deformable material in the additional chamber 12 under pressure and displaces the movable valve element 16 to the central neutral position when no torque is applied to the gear. When a torque is applied to the gear wheel, the latter is forced to move in the axial direction under the action of the axial force applied to it by the rack teeth. This causes a different pressure to be applied to the incompressible deformable material contained in the additional chamber 12, under the action of the piston 1I, which causes the movable element 16 of the control valve 15 to move from its neutral central position, making the control.
    Formula of Invention
    权利要求:
    Claims (7)
    [1]
    1. A rack and pinion steering mechanism containing a crankcase with a cylindrical chamber of which is axially movable by means of bearings; a shaft with a helical gear that engages with the rail;
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    an element mounted for movement in a chamber formed in a housing connected to the crankcase and kinematically connected to one end of the stem, the other end of which faces the additional chamber aligned with the cylindrical chamber of the crankcase and filled with an incompressible deformable material and separated from the cylindrical the crankcase chamber with a piston, having with one of the bearings the possibility of axial movement, limited by an elastic element -v volume mounted on the shaft, characterized in that, in order to simplify the piston is made in the form of a glass, with the open side facing the end surface of the shaft, and an additional chamber is located between the piston and the bolt.
    [2]
    2. The mechanism according to claim 1, characterized in that the additional chamber is filled with liquid, and in the housing there is a channel communicated with the cavity in which the stem is placed.
    [3]
    3. The mechanism according to claim 1, wherein the stem is installed in a channel, filled in the crankcase cover, can be moved in a direction parallel to the axis of the shaft.
    [4]
    4.Mechanism according to claim 3, characterized in that it is provided with a diaphragm fixed between the housing and the end of the crankcase, and the cavity formed between the diaphragm and the cavity is filled with liquid.
    [5]
    5. The mechanism according to claim 3, characterized in that the rod is provided with a diaphragm fixed between the roof and the end of the crankcase, with the cavity formed between the diaphragm and the piston filled with liquid.
    [6]
    6. A pop. 3 mechanism, characterized in that the piston and rod are provided with two diaphragms fixed between the cap and the end of the crankcase, with the cavity formed by the diaphragms filled with liquid.
    [7]
    7. The mechanism of claim 3, wherein the incompressible deformable material is rubber attached to the side wall of the cylindrical chamber and the end surfaces of the piston and rod.
    8 4 The mechanism of pop. 1, which differs from the fact that the elastic element is mounted on the other end of the shaft.
    .71296P018
    opposite to the additional chamber, made in the cylinder, between the bearing and the supporting bean chamber.
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    Editor N.Rogulich
    Compiled by V.Ionov Tehred L.Oleinik
    Order 629/63 Circulation 567 Subscription
    VNIIPI USSR State Committee
    for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5
    Production and printing company, Uzhgorod, Projecto st., 4
    4
    Proofreader A. Obruchar
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    同族专利:
    公开号 | 公开日
    DE3275827D1|1987-04-30|
    EP0078879A3|1984-05-30|
    EP0078879B1|1987-03-25|
    IT1145712B|1986-11-05|
    US4524631A|1985-06-25|
    IT8168449D0|1981-11-09|
    JPS58126259A|1983-07-27|
    EP0078879A2|1983-05-18|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB449518A|1934-09-22|1935-03-29|Gustaf Hoernell|Automatic tightening means for operating spindles and valve spindles of cocks, valves or the like|
    GB808373A|1955-05-05|1959-02-04|Hydrosteer Ltd|Improvements in vehicle power-assisted steering mechanism|
    GB1100059A|1965-08-16|1968-01-24|Burman & Sons Ltd|Power assisted rack and pinion steering gear|
    FR2133043A5|1971-04-06|1972-11-24|Gemmer France|
    US3997425A|1974-12-26|1976-12-14|Universal Oil Products Company|Process for the liquefaction of coal|
    US4182427A|1977-09-12|1980-01-08|The Bendix Corporation|Control mechanism for an integrated brake and steering system|
    JPS5761619B2|1978-09-01|1982-12-25|Toyota Motor Co Ltd|
    US4245815A|1979-02-23|1981-01-20|Linear Dynamics, Inc.|Proportional solenoid valve and connector|
    FR2459748B1|1979-06-22|1983-08-19|Citroen Sa|
    DE3277008D1|1981-06-03|1987-09-24|Trw Cam Gears Ltd|A power assisted steering gear assembly|EP0119170B1|1983-03-09|1987-05-06|CORINT S.r.l.|Power-assisted rack-and-pinion steering apparatus|
    DE3465444D1|1983-03-09|1987-09-24|Corint Srl|Power-assisted rack-and-pinion steering apparatus|
    DE3468386D1|1983-11-05|1988-02-11|Zahnradfabrik Friedrichshafen|Rack servo-steering, particularly for motor vehicles|
    IT1180050B|1984-04-11|1987-09-23|Corint Srl|IMPROVEMENTS TO RACK POWER STEERING DEVICES|
    JP3384105B2|1994-05-17|2003-03-10|トヨタ自動車株式会社|Rack and pinion type steering gear device|
    DE4422556C1|1994-06-28|1995-10-05|Daimler Benz Ag|Rack=and=pinion steering system for vehicle with servo motor|
    US6293164B1|1999-06-30|2001-09-25|Trw Inc.|Rack and pinion steering apparatus and method for manufacturing a helical pinion|
    US20100145516A1|2008-12-08|2010-06-10|Illinois Tool Works Inc.|High voltage monitoring system and method for spray coating systems|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    IT6844981A|IT1145712B|1981-11-09|1981-11-09|DISTRIBUTOR VALVE FOR THE POWER TO RACK POWER STEERING CONTROL FOR VEHICLES|
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