• 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:
    ROTATABLE SLEEVE RACK An improved variable ratio steering apparatus is used to effect turning movement of steerable wheels of a vehicle. The apparatus includes a longitudinally extending force transmitting member or bar which is connected with the steerable vehicle wheels. A drive member is rotatably mounted on the bar. In order to effect axial movement of the bar and turning movement of the vehicle wheels, a pinion gear is disposed in meshing engagement with an array of helical rack gear teeth on the drive member. A cam track is also provided on the drive member. This cam track is coextensive with the array of rack gear teeth. The cam track cooperates with a follower to effect rotational movement of the drive member as the drive member and force transmitting bar are moved axially. This rotational movement of the drive member causes an interaction between the pinion and rack gear teeth to vary the rate of axial movement of the drive member and the force transmitting bar. The follower advantageously engages the cam track at a location which is axially aligned with the location where the pinion gear is disposed in meshing engagement with the rack gear teeth. This tends to minimize deflection of the components of the steering apparatus. Although an apparatus constructed in accordance with the present invention is advantageously used to turn the steerable wheels of a vehicle, it is also contemplated that the apparatus can be used in other environments.
    公开号:SU888808A3
    申请号:SU782599105
    申请日:1978-03-15
    公开日:1981-12-07
    发明作者:Джон Адамс Фредерик
    申请人:Кэм Гирз Лимитед (Инофирма)；
    IPC主号:
    专利说明:

    one
    The invention relates to the field of transport engineering, namely to the steering control of vehicles.
    A variable gear ratio steering is known, comprising a housing with a drive element accommodated therein, which has the ability to pivot and longitudinal, Q and has helical teeth, a pinion gear, a cam mounted with the ability to interact with the guide element and rod mounted on bearings in said drive element 1
    The disadvantage of this steering is its low reliability .20
    The aim of the invention is to improve the reliability of the steering.
    This goal is achieved in that the steering is provided with a sliding support, and said guideway 5 includes a central portion parallel to the axial line of the drive element, and two adjoining portions with a curvilinear cross-directional direction, 30
    moreover, the teeth of the drive element are permanently engaged with the teeth of the drive gear with a corresponding rotation of the drive element, and the sliding support is installed in the housing on the side opposite to the drive gear, with the possibility of interacting with the drive element is greater than or equal to the length of the drive element, as well as the fact that the sliding support is made in the form of a fork spanning the drive element.
    Figure 1 is a schematic representation of the steering, section j in figure 2 steering, partial section; on fig.Z - razperz aa in figure 2.
    The variable-ratio steering includes a housing 1, in which the actuating member 2 is mounted with the possibility of rotation and longitudinal movement with helical teeth 3 formed on it, the pinion gear 4 mounted in the housing 1, the cam 5 mounted in the housing 1 -C with interaction with the guide 6, made on the drive element 2 with the ability
    rotation of the latter relative to the ve; 1usche14 gear 4 with axial displacement of the drive element 2, the rod 7 mounted for rotation on bearings 8 and 9 in the drive element 2 and connected with the moving elements 10 and 11 of the steering system of the vehicle, conical support | 12, vshol, not in the form of a sleeve encompassing the drive element 2. The sliding support is installed in the housing from the side opposite to the drive pin; turn 4. Guide 6 contains a central section 13 parallel to the centerline at one element 2, and two adjoining sections 14 and 15 with curved guide antisymmetric location, wherein the length of the latter is greater than or equal to the length of the drive member 2,
    At low speeds, it is advisable to require a reduction in the force applied to the steering wheel, by increasing the gear ratio of the steering mechanism.
    For this, the drive element 2 is rotated about its axis. This rotation causes the helical teeth to slide on the drive element relative to the teeth of the pinion gear 4a and the drive element 2 is displaced relative to the guide 6. This slip displaces the drive element 2 longitudinally relative to the housing 1 in a direction opposite to the direction in which the drive element moves relative to the housing 2 by pinion 4, thereby increasing gear ratio. If pinion 4 rotates counterclockwise, as shown in Fig. 2, then the drive element 2 and rod 7 move to the right. During this movement, the drive element 2 is rotated upwards. (as shown in FIG. 2) or clockwise (as shown in FIG. 3).
    The helical teeth 3 of the pinion gear pass at an acute angle to the longitudinal axis of the drive element 2. Consequently, rotation of the drive element 2 relative to its axis causes the sliding gears to slip or move under the action of the cam of the gears of the gears of the pinion gear 4 through the leg profiles of the rack and pinion gears. Moving the actuator to the left is like a screw. This leads to a decrease in the speed of movement to the right of the drive element 2 and the rod 7, thereby enhancing the mechanical action provided by the steering transmission device.
    In the same way, pinion 4 turns clockwise
    to move the drive element 2 and the rod 7 to the left.
    The guide 6 has a central portion 13, which runs parallel to the longitudinal axis of the drive element 2. Therefore, when the cam 5 engages with the center, the guide portion 13 of the drive member 2 does not rotate relative to the housing. Therefore, the gear ratio remains constant.
    In order to ensure reliable engagement between the pinion gear 4 and the teeth of the 3 rack and pinion gears, during rotation, the drive element 2 of the pinion gear has a curved configuration that is the same with the configuration of the track 6,
    权利要求:
    Claims (3)
    [1]
    1. The steering gear with a variable gear ratio, comprising a housing with a drive element accommodated therein, which has the ability to turn and longitudinal movement and is made with helical teeth, a pinion gear, a cam mounted with the possibility of interaction with a guideway, made on the drive element, and rod mounted on bearings
    in the specified element, it is due to the fact that, with the aim of increasing reliability, it is provided with a sliding support, and said guide consists of a central section parallel to the axial line of the drive element, and two there are sections with a curvilinear antisymmetrical arrangement, the eub of the drive element being permanently engaged with the teeth of the pinion gear with the corresponding rotation of the drive element, and said sliding support is installed in the housing opposite the drive pin Thorns with the ability to interact with the drive element,
    [2]
    2. The steering control according to claim 1, characterized in that the length of said direction to the shaft is greater than or equal to the length of the drive element.
    [3]
    3. The steering control according to claim 1, characterized in that the sliding bearing is made in the form of a fork spanning the drive element.
    Information sources,
    taken into account in the examination
    1. Lysov M.I. Steering control cars. M., Mashinostroenie, 5 1972, p.25 (prototype).
    / Lz.
    s
    (2 f3 2
    A Fig2
    类似技术:
    公开号 | 公开日 | 专利标题
    US5284219A|1994-02-08|Steering apparatus with variable steering angle ratio
    SU888808A3|1981-12-07|Steering with variable transmission ratio
    JPH04118382A|1992-04-20|Variable gear ratio steering system
    US3944015A|1976-03-16|Rack and pinion steering gear
    US5386879A|1995-02-07|Steering angle ratio varying device for a vehicle
    JPH07257406A|1995-10-09|Vehicular steering device with variable rudder angle ratio
    US4221137A|1980-09-09|Ball nut type steering gear
    CA1085702A|1980-09-16|Steering gears
    US4270397A|1981-06-02|Rotatable sleeve rack
    KR920006188A|1992-04-27|Rear wheel steering of the vehicle
    CA1082002A|1980-07-22|Rack and pinion assemblies
    US3546957A|1970-12-15|Variable ratio steering gear
    GB1165993A|1969-10-01|Improvements in Gear Shift Mechanisms for Change-Speed Gear Boxes
    US3153948A|1964-10-27|Vehicular steering mechanism
    JP3233716B2|2001-11-26|Automotive steering system
    ES8305102A1|1983-04-01|Transmission with incorporated gear regulator.
    US4217793A|1980-08-19|Rack and pinion type steering gear
    US4993730A|1991-02-19|Rear-steering control device for automotive vehicle with four-wheel steering
    CA1100852A|1981-05-12|Rotatable sleeve rack
    SU872357A1|1981-10-15|Rack-type steering mechanism of vehicle
    JPH092312A|1997-01-07|Steering angle ratio variable device
    SU929489A1|1982-05-23|Vehicle transmission
    JPH03136975A|1991-06-11|Rear-wheel steering device of front-and-rear-wheel steering vehicle
    KR100468495B1|2005-01-27|Variable steering system for use in an automobile
    SU1579832A1|1990-07-23|Steering gear for vehicle having front and rear steerable wheels
    同族专利:
    公开号 | 公开日
    LU79225A1|1978-06-28|
    DE2809221C2|1982-04-01|
    ZA781395B|1979-02-28|
    JPS6033704B2|1985-08-05|
    DD134134A5|1979-02-07|
    IT7867551D0|1978-03-14|
    AU3416978A|1979-12-13|
    PL205328A1|1979-02-12|
    ES467816A1|1978-11-01|
    BE864870A|1978-07-03|
    SE7803022L|1978-09-16|
    AU516614B2|1981-06-11|
    JPS53133835A|1978-11-22|
    AR213757A1|1979-03-15|
    BR7801547A|1978-10-03|
    NL7802851A|1978-09-19|
    YU61578A|1983-01-21|
    FR2384172A1|1978-10-13|
    GB1546339A|1979-05-23|
    DK117878A|1978-09-16|
    FR2384172B1|1984-10-19|
    IT1107114B|1985-11-18|
    SE443754B|1986-03-10|
    CA1096755A|1981-03-03|
    DE2809221A1|1978-09-28|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    GB609356A|1946-03-12|1948-09-29|Frederick Osgood Hickling|Improvements in or relating to cam mechanisms for steering gears and other purposes|
    AU462162B2|1970-08-17|1975-05-30|Bishop, A.E.|Variable ratio steering mechanism for automotive vehicles|
    ZA722759B|1971-05-14|1973-04-25|Bendix Westinghouse Ltd|Vehicle steering mechanism|
    US3753375A|1971-11-29|1973-08-21|Trw Inc|Rack and pinion steering gear|
    FR2180157A5|1972-04-10|1973-11-23|Gemmer France|JPS625824B2|1978-01-17|1987-02-06|Nippon Seiko Kk|
    JPS589034B2|1978-04-24|1983-02-18|Tokai Trw & Co|
    GB2036240B|1978-11-27|1982-12-15|Cam Gears Ltd|Variable ratio rack and pinion gear|
    EP0012506B1|1978-12-07|1983-07-20|CAM GEARS Limited|Steering gear and method of assembling such gear|
    JPS5590224A|1978-12-27|1980-07-08|Tokai T R W Kk|Rack pinion steering gear and gear cutting method of its rack|
    US4263817A|1979-07-02|1981-04-28|The Bendix Corporation|Support member for rack and pinion assembly|
    JPS6210869B2|1982-09-09|1987-03-09|Tokai Trw & Co|
    JP2006168559A|2004-12-16|2006-06-29|Ogasawara Precision Engineering:Kk|Vehicular variable steering device|
    JP2010058599A|2008-09-02|2010-03-18|Jtekt Corp|Rack shaft support device and vehicular steering device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    GB10867/77A|GB1546339A|1977-03-15|1977-03-15|Gear assemblies|
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