• 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 invention relates to an apparatus for controlling the fluid pressure in an operating space or cylinder (11) of a vehicle clutch. …<??>A control valve (18) controls the fluid supply to said operating space dependent on the input speed of rotation of the clutch because the valve body (18) is subjected to centrifugal forces. On the other hand the valve body is loaded by the fluid pressure in the operating space (11) to make the fluid pressure in the operating space (11) dependent on the input speed of rotation.
    公开号:SU837336A3
    申请号:SU792853132
    申请日:1979-12-04
    公开日:1981-06-07
    发明作者:Петрус Мария Каде Теодорус
    申请人:Ван Дорн Трансмисси Б.В. (Фирма)；
    IPC主号:
    专利说明:

    (54) Friction clutch
    one
    The invention relates to machine building and, in particular, to devices for transmitting rotation.
    A friction clutch is known, containing a driven coupling half placed in the housing and in contact with it through the friction disks located in the working cavity of the driving coupling half.
    with hydraulic cylinder, spring-loaded ZO-IQ
    a horseman and pressure channel l. This technical solution is closest to the invention.
    However, the known clutch has low performance. .
    The aim of the invention is to improve performance.
    The goal is achieved by the fact that the spool is made in the form of inertial mass, is spring-loaded to the center and expands the peripheral and central chambers with the body, and the hydraulic cylinder is connected to the peripheral chamber of the spool and the working cavity by channels. In this case, the central chamber of the spool 25 is connected to the pressure channel; the coupling is provided with a throttle device located in the channel connecting the hydraulic cylinder with the working cavity; the hydraulic cylinder is connected to the working cavity 30
    through the peripheral chamber of the valve with a channel that is closed when the valve is raised.
    FIG. 1 shows a friction clutch; in fig. 2 - the same embodiment of the connecting channel; in fig. 3 - the same, a variant of connection of a hydraulic cylinder.
    The coupling has an input shaft 1, to which a leading coupling half is attached, flange 2. Flange 2 is fastened, for example, from bolts 3 to housing 4, which rotates together with the input shaft 1. With ring housing, axially mounted friction disks 5 are fastened and the friction discs 6 are connected to the driven half-coupling disc 7 and the output shaft 8 of the coupling.
    The clutch contains a pressure disk 9 mounted concentrically to the output shaft 8, which can be moved in the axial direction by means of a piston 10 located on the hydraulic cylinder 11.
    The housing 4 of the coupling has an end wall 12 with a pressure channel 13 connected to the pipeline 14 in the stationary case 15, the driven coupling half is made with a channel 16 connected to the working cavity 17.
    The spool 18 has the ability to move in the radial direction and, together with the body, forms a central chamber 19, It is spring-loaded to the center by a spring 20 and forms with the body a peripheral chamber 21,
    When the housing 4 is rotated, the ashes 18, representing the portioned mass, are subjected to centrifugal force, depending on the speed of rotation. By displacing the spool 18, the connection between the liquid supply pipe 13 through the chamber 19 and the hydraulic cylinder 11 is opened. As a result, the pressure disk 9 is displaced, and the friction disks 5, 6 are pressed against each other and to the flange 2. The output shaft 8 depends on the pressure of the fluid in the hydraulic cylinder 11. The peripheral chamber 21 can be connected by a channel 22 to an annular cavity 23, - connected to the working cavity 17.
    The bypass channel 24 equalizes the fluid pressure in the hydraulic cylinder 11 and in the chamber 21. The channel 25 serves for limited passage, the value of the liquid between the hydraulic cylinder 11 and the working cavity 1: 10. Through the channel 26, the fluid diverging in the cavity 17 can flow out through the friction discs 5, 6; in the absence of rotation or at low speeds of rotation of the input shaft 1 and the housing 4 of the coupling, the spool 18 will be pressed to the censor under the action of the spring 20, as a result of which the bumper 13 turns out to be blocked by the 3 cylinder 11 (liquid may leak through channel 25).
    At a certain rotational speed, the spool 18 starts to move radially from the center under the action of centrifugal force, resulting in a connection between the supply pipe 13 and the hydraulic cylinder 11. Since the channel 25 allows only a limited flow of fluid to flow, it depends on the pressure of the fluid in the pipeline. 13, a certain fluid pressure is established in the hydraulic cylinder 11, this pressure of the fluid acting through the chamber 21 on the valve 18 in the form of a force acting, ntru. As a result, the spool 18 tends to increase the overlap of fluid supply to the hydraulic cylinder 11,
    Depending on the speed of rotation of the input shaft 1, the working element of the piston is installed in a certain equilibrium position. At a sufficiently high speed, the vrsocene provides a complete connection between the inlet fluid pipe 13 and the hydraulic cylinder 11, while the fluid pressure in it must be such as to ensure sufficient friction between the friction disks 5, 6 and the absence of slippage between them
    The slipping of the clutch discs takes place at a certain speed range of the input shaft 1 due to the fact that the spool 18, which is in the equilibrium position, provides limited fluid flow between the inlet pipe 13 and the hydraulic cylinder 11.
    As long as the fluid pressure in the hydraulic cylinder 11 is low, there is a large pressure difference on the spool, a large flow of fluid into the hydraulic cylinder 11 is provided, which is important when the pressure disk 9 travels a distance equal to the gap between the friction discs 5, 6. Only when the friction discs 5 , b come in contact with each other, the pressure of the fluid in the hydraulic cylinder 11, - and hence in the chamber 21, - can be raised.
    In the device shown in Fig. 2, the cooling elements are cooled due to the flow of liquid flowing out of the chamber 21 through the channel 22 with limited transmission of fluid to the rubbing elements, the liquid flowing out through the cavity 17 and the pipeline 16 located in the output shaft 8.
    Cooling is stopped if there is no pressure in the hydraulic cylinder 11 and if such a speed is reached that the valve 18 closes the channel 22 due to its radial displacement from the axis. . At the same time, the pressure of the fluid in the working volume is maximal, so that there is almost no slip at all.
    FIG. 3 shows a device in which there is no connection between the hydraulic cylinder 11 and the chamber 21, so that the fluid pressure in the chamber 21 will disappear. For the radial movement of the spool 18 from the center, the speed of the input shaft is lower. 1 As a result, if the clutch has already engaged, it continues to fully engage at speeds lower than the speed at which the slip originally existed.
    权利要求:
    Claims (4)
    [1]
    In all three embodiments of the proposed coupling, the fluid pressure in the inlet pipe 13 may affect the coupling characteristics (adhesion characteristics) due to the fact that the fluid pressure through the chamber 19 acts as a radial sieve directed outward on the spool 18, i.e. . acts in conjunction with centrifugal force, providing a rise in fluid pressure in the hydraulic cylinder 11 This may be important from the point of view of the possibility of external additional control. In addition, in the proposed variants of the coupling, it is possible to impose certain restrictions, for example, channel 24, in order to ensure slow movement of the spool 18. With a rapid increase in the speed of the input shaft, the coupling will provide a coupling at a higher speed which may be useful. Claims 1. A friction clutch comprising a driven half-body and a contacting with it through the friction disks located in the working cavity and leading the half-coupling with a hydraulic cylinder, a spring-loaded slide valve and a pressure channel, are missing. In order to improve performance, the spool is made in the form of inertial mass, is spring-loaded to the center and forms peripheral and central chambers with the body, and the hydraulic cylinder is connected to the peripheral chamber of the spool and the working cavity by channels.
    [2]
    2. A coupling according to claim 1, characterized in that the central chamber of the spool is connected to the pressure channel.
    [3]
    3. Mufta popp. 1 and 2, characterized in that it is provided with a throttle device located in the channel connecting the hydraulic cylinder to the working cavity.
    [4]
    4. Coupling on PP. 1-3, wherein the 4fo hydraulic cylinder is connected to the working cavity through the peripheral chamber of the spool by a channel blocked by the spool. Sources of information taken into account in the examination 1. US patent number 3602347,. 192-106, 1969 (prototype).
    类似技术:
    公开号 | 公开日 | 专利标题
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    同族专利:
    公开号 | 公开日
    DE2966973D1|1984-06-14|
    NL7811860A|1980-06-09|
    BR7907908A|1980-07-15|
    US4308940A|1982-01-05|
    EP0011908B1|1984-05-09|
    JPS5578821A|1980-06-13|
    AU531130B2|1983-08-11|
    JPS6230328B2|1987-07-01|
    EP0011908A1|1980-06-11|
    AU5305879A|1980-06-12|
    AT7420T|1984-05-15|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US2280042A|1939-08-17|1942-04-14|Amador Botello|Fluid coupling|
    US2642844A|1948-12-09|1953-06-23|Borg Warner|Clutch piston safety valve|
    US2903083A|1954-12-20|1959-09-08|Gen Motors Corp|Vehicle having auxiliary transmission for the operation of accessories|
    US3176813A|1962-08-30|1965-04-06|Consolidation Coal Co|Centrifugally actuated fluid clutch|
    US3358796A|1966-05-05|1967-12-19|Twin Disc Inc|Friction clutch having centrifugally operated ball valve means|
    DE1948266C3|1968-09-25|1974-07-25|General Motors Corp., Detroit, Mich. |Actuating device for a liquid-cooled friction disc clutch, in particular for motor vehicles|
    US3542174A|1969-03-04|1970-11-24|Honda Motor Co Ltd|Torque converter connected to fluid operated clutches|
    US3556271A|1969-06-02|1971-01-19|Twin Disc Inc|Clutch and torque converter transmission having an integral governor for constant output speed|
    US3712437A|1970-09-28|1973-01-23|Gen Motors Corp|Hydraulic clutch with centrifugal and manual valves|
    US3680398A|1971-08-13|1972-08-01|Twin Disc Inc|Torque converter power transmission having regulating valve means|
    US3819020A|1972-10-02|1974-06-25|Gen Motors Corp|Fluid operated starting clutch with centrifugally actuated control valves|JPS647256B2|1981-04-24|1989-02-08|Aisin Aw Co|
    JPS58500722A|1981-05-14|1983-05-06|
    US4529073A|1982-09-30|1985-07-16|Deere & Company|Cooling oil cut-off valve for a clutch|
    JPS633490Y2|1983-06-13|1988-01-28|
    AT32252T|1983-09-05|1988-02-15|Zahnradfabrik Friedrichshafen|FRICTION BRAKE OR -Coupling with a forced cooling.|
    US4679677A|1984-07-16|1987-07-14|Honda Giken Kogyo K.K. |Hydraulic type starting clutch|
    AT384086B|1984-09-07|1987-09-25|Steyr Daimler Puch Ag|LIQUID FRICTION COUPLING|
    NL8403461A|1984-11-13|1986-06-02|Doornes Transmissie Bv|INFLATABLE VARIABLE TRANSMISSION.|
    JPH043131Y2|1985-02-26|1992-01-31|
    JPH0749811B2|1985-04-02|1995-05-31|本田技研工業株式会社|Centrifugal clutch|
    JPS61175648U|1985-04-22|1986-11-01|
    JPH0718454B2|1986-03-03|1995-03-06|日野自動車工業株式会社|Hydraulic crimp type clutch|
    IT1188104B|1986-04-23|1987-12-30|Fiat Auto Spa|TRANSMISSION TO CONTINUOUS SPEED VARIATOR FOR MOTOR VEHICLES|
    US4688665A|1986-05-01|1987-08-25|Caterpillar Inc.|Apparatus for preventing engine stall|
    US5014839A|1987-11-18|1991-05-14|Honda Giken Kogyo Kabushiki Kaisha|Drive train of a wheeled vehicle and method for controlling the same|
    US5031746A|1990-03-30|1991-07-16|Erkki Koivunen|Multi-mode clutch for change-speed transmissions|
    FR2675867A1|1991-04-26|1992-10-30|Guimbretiere Pierre|DEVICE FOR TRANSMISSION WITH A VISCOCOUPLEUR CONTROL, IN PARTICULAR FOR A MOTOR VEHICLE.|
    US5720374A|1996-08-13|1998-02-24|General Motors Corporation|Backfill pressure control valve for a rotating clutch|
    DE19642305A1|1996-10-14|1998-04-16|Zahnradfabrik Friedrichshafen|Switchable clutch for heavy vehicles|
    US7165567B2|2004-06-17|2007-01-23|General Motors Corporation|Valve apparatus for compensating centrifugal forces|
    JP4319693B2|2007-08-21|2009-08-26|ヤマハ発動機株式会社|Stepped automatic transmission, power unit including the same, and vehicle|
    DE102009017063B4|2009-04-01|2018-12-27|Dr. Ing. H.C. F. Porsche Aktiengesellschaft|Multi-plate clutch with a locking device|
    US8408376B2|2009-07-13|2013-04-02|Clark Equipment Company|Drive uncoupler|
    JP5841355B2|2011-06-07|2016-01-13|アイシン・エィ・ダブリュ工業株式会社|Actuator powered by centrifugal force|
    US10563706B2|2015-09-14|2020-02-18|Honda Motor Co., Ltd.|Hydraulic power transmission device|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    NL7811860A|NL7811860A|1978-12-05|1978-12-05|HYDRAULICALLY OPERATED CLUTCH.|
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