• 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:
    In a clutch with coolant flow over cooperating clutch members 20, means 55 are provided for shutting off the coolant flow during the initial stage of clutch engagement and initiating coolant flow when the actuating force on the clutch members is at a higher value. This reduces the drag torque of the clutch and the delay in operation. Preferably the clutch is hydraulically actuated, with a predetermined hydraulic control pressure being needed to bring the clutch plates into clutching engagement and a greater hydraulic control pressure being needed to open one or more coolant flow passages 50 to the clutch members. The same control pressure preferably acts both on the clutch actuator 25 and on a piston 60 controlling a coolant flow control valve 55 within a clutch drum. Such a clutch is of use in a jet engine start system. <IMAGE>
    公开号:SU786931A3
    申请号:SU782643647
    申请日:1978-07-28
    公开日:1980-12-07
    发明作者:Х. Гримм Дуан；Б. Блэкберн Рональд
    申请人:Сандстрэнд Корпорейшн (Фирма)；
    IPC主号:
    专利说明:

    The space between the inner and outer drums of the coupling is a chamber; in which the friction clutch discs 7 are located. Alternating clutch discs. 7 are associated with an inner drum. 1 by means of a key 8. The clutch plates of the outer drum are mounted on the keys 9.
    The clutch disc clutch occurs under the action of the piston Ø, which is mounted in the central tubular cavity 11 of the inner drum. To compress the clutch discs, the nopuierib 10 comes into contact with the end thrust washer 12, which is secured with the key 8 of the inner clutch drum. The pressure for engaging the clutch is supplied through the opening 13 in the tubular cavity 11 through the bore holes 14, which are connected to the cylinder 15, in which the piston 10 is sealed with a sealing ring. The clutch discs are disconnected by the engagement spring 16 acting on the piston 10. A flow of coolant for cooling the clutch discs 7 passes through the inlet 17 of the clutch inner drum and through the radial holes 18.
    Inside the hollow inner part of the drum there is mounted a sleeve 19, which separates two chambers 20 and 21 and has a connecting channel, 22. At one end of the chamber 21 there is a series of radial bores 23 for guiding the flow of coolant from the chamber 21 to the clutch through the radial bores 18. The control valve with valve element 24 is located inside the chamber 21. It is spring-loaded 25, therefore The valve element 24 closes the radial bores 23, preventing the flow of coolant from the inlet 17 to the clutch chamber.
    The chamber 20 has an additional piston 26, which is moved by the pressure of the energy carrier flowing through the channel 27. The piston 26 and the valve element 24 are mechanically interconnected by a rod 28 located in the channel 22, whereby the piston controls the position of the valve element 24.
    When the pressure in the control system
    has a relatively low value, the force generated by it on the piston 26 is not enough to overcome the force of the spring 25, and the valve element 24 remains stationary 1. Coolant flow does not flow into chamber.
    . the clutch creates a braking moment. When the pressure in the control system rises to a value sufficient to overcome the force of the spring 25, the piston 26 and valve element 24 are mixed to the right so that the valve element opens the radial bore holes 23, so that coolant can flow into the chamber clutches. This coolant flow passes through a series of channels 29 in the valve element. These channels allow the coolant to always stick on both sides of the valve body to equalize the forces on the valve element against the coolant pressure. As soon as the valve element moves to the right and opens the radial bore holes 23, the coolant will flow through the valve element channels 29 and through the radial bores 23 to the clutch chamber. When, the pressure in the control system drops to a value sufficient to allow the spring
    25Move the valve element back, the flow of coolant is cut off from the clutch chamber. In the chamber 20 there are from-and-off 30, designed to enable the camera to be connected behind the rear
    26 with pressure in the housing. In the wall of the coupling half 2, there are a plurality of apertures 31, designed to allow the release of coolant from the clutch chamber.
    At the initial moment, the pressure in the clutch control system is low, the coolant flow does not flow into the clutch chamber and does not create a braking torque. When the turbo starter reaches operating speed, the pressure in the control system increases, the force of the spring 25 is overcome, the valve element 24 is moved and the coolant flow is allowed to flow into the clutch chamber.
    Formula and 30 brethren
    权利要求:
    Claims (5)
    [1]
    1. The friction clutch, containing the inner and outer coupling halves with coolant channels, mounted with the possibility of axial movement of the friction discs and the inclusion mechanism, made
    in the form of a cylinder with a piston, the cavity of the cylinder is connected to the source of the energy carrier through the drive spool, characterized in that, in order to increase the efficiency of the initial switching on of the friction discs by reducing the torque, simplifying the design and reducing the weight, a channel is made in the inner coupling half which is located drive valve.
    [2]
    2. The coupling according to Claim 1, is made in such a way that the switching mechanism is located in the inner coupling half.
    [3]
    3. The coupling according to claim 2, characterized in that the drive of the slide valve is made in the form of a hydraulic connection with the source carrier of the additional cylinder and the piston rigidly connected with the slide valve.
    [4]
    4. The coupling according to claim 3, characterized in that the additional cylinder is filled
    with a balancing channel.
    [5]
    5. A clutch according to claim 3, characterized in that the spool is made with parallel oat channels for cooling the liquid.
    Sources of information taken into account in the examination 1. US patent N 2979176, cl. 192-37.17, 1972.
    , 2. US patent N 3369639. class. 192-87.17, 1968 (prototype).
    类似技术:
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    同族专利:
    公开号 | 公开日
    FR2398928B1|1986-05-23|
    DE2829782A1|1979-02-15|
    FR2398928A1|1979-02-23|
    IL54968D0|1978-08-31|
    SG57482G|1983-09-02|
    JPS5433936A|1979-03-13|
    IL54968A|1980-11-30|
    CA1095844A|1981-02-17|
    GB2001713A|1979-02-07|
    GB2001713B|1982-05-12|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US3105582A|1961-03-13|1963-10-01|Twin Disc Clutch Co|Oil pressure actuated clutch|
    US3301367A|1965-02-11|1967-01-31|Twin Disc Clutch Co|Double hydraulic operated clutch having low pressure fluid plate cooling means|
    US4004670A|1975-07-09|1977-01-25|Caterpillar Tractor Co.|Self-modulated clutch with drag-reduction valve|JPS6329141B2|1981-12-10|1988-06-13|Honda Motor Co Ltd|
    EP0188415B1|1983-09-15|1987-12-02|ZF FRIEDRICHSHAFEN Aktiengesellschaft|Power train|
    FR2557232B1|1983-12-27|1989-06-09|Valeo|MULTIDISC CLUTCH WITH IMPROVED LUBRICATION AND COOLING|
    AT386870B|1984-05-18|1988-10-25|Steyr Daimler Puch Ag|Pressure-medium-operable clutch with coolant-supplied friction bodies, in particular discs|
    US4718308A|1985-03-29|1988-01-12|Borg-Warner Automotive, Inc.|Hydraulic control system for continuously variable transmission|
    EP0293377B1|1986-02-14|1991-05-02|ZF FRIEDRICHSHAFEN Aktiengesellschaft|Forced cooling device for friction brakes or clutches|
    JPH0666770B2|1986-12-19|1994-08-24|三洋電機株式会社|Clock signal reproduction circuit|
    AT395903B|1987-09-10|1993-04-26|Steyr Daimler Puch Ag|CLUTCH DEVICE FOR POWERTRAIN TRANSMISSION|
    JPH01295541A|1988-01-08|1989-11-29|Japan Radio Co Ltd|Waveform shaping and identifying circuit|
    JPH02101836A|1988-10-11|1990-04-13|Kokusai Electric Co Ltd|High speed synchronizing circuit|
    DE10230183B4|2002-07-05|2013-06-06|Zf Friedrichshafen Ag|Method for cooling fluid supply for multi-plate clutches and brakes in automatic transmissions and device for cooling fluid supply|
    US7694794B2|2007-05-29|2010-04-13|Deere & Company|PTO clutch with lubrication oil shut-off valve and integrated relief valve|
    DE102010039171A1|2010-08-11|2012-02-16|Zf Friedrichshafen Ag|Clutch, particularly multi-plate clutch for automatic transmission of motor vehicle, has switchable cooling unit e.g. wet running switching or starting element, where adjustable medium is arranged for cooling oil supply control within shaft|
    CN102619895B|2012-04-18|2013-09-18|重庆威马农业机械有限公司|Normally-open clutch of micro-cultivator|
    US10041549B2|2016-01-18|2018-08-07|Deere & Company|Disk pack cooling arrangement|
    JP6733574B2|2017-02-20|2020-08-05|トヨタ自動車株式会社|Hydraulic control device for engagement mechanism|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    US81967977A| true| 1977-07-28|1977-07-28|
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