192 clutches and power-stop control – Clutches – Operators
Reexamination Certificate
2002-08-15
2004-10-26
Rodriguez, Saul (Department: 3681)
192 clutches and power-stop control
Clutches
Operators
C192S048910, C192S083000
Reexamination Certificate
active
06808054
ABSTRACT:
TECHNICAL FIELD
The invention relates to a torque transfer device with at least one first and at least one second clutch device.
BACKGROUND
A torque transfer device is in the sense of the present invention in particular a device which under predetermined conditions can convert at least one rotational characteristic of a rotationally mounted component part such as input shaft, into an identical or different rotational characteristic of another rotationally mounted component part such as an output shaft, wherein if required these component parts can be coupled and uncoupled. More particularly it is proposed that the torque transfer device can be shifted into different shift positions wherein at least one shift position is configured so that a rotational characteristic is transferred unchanged substantially between these rotationally mounted component parts and wherein at least one shift position is configured so that a rotational characteristic is not transferred by the torque transfer device and wherein if necessary at least one shift position is provided in which a rotational characteristic is transferred in modified form.
A rotational characteristic in the sense of the present invention is in particular a characteristic which describes at least the rotational status of a rotationally movable component part such as shaft. The rotational characteristic is in particular a torque or speed.
A torque transfer device has in the sense of the present invention in particular a clutch device and/or transmission device and/or torque converter device or the like.
Devices which can transfer torque and have clutch devices are already known.
The object of the invention is to provide a torque transfer device which is designed technically different.
According to one particular aspect the object of the invention is to provide a torque transfer device with several clutches which can be actuated at low structural cost as well as cost-effectively and with high operational reliability.
According to a particular aspect the object of the invention is to provide a torque transfer device having several clutches and at least a drive device so that the required drive energy is reduced at least during predetermined shifts of the clutch devices.
According to the invention in particular a torque transfer device is provided with a drive release device which has the effect with predetermined clutch actuations of reducing the power which is transferred by a drive device for actuating the first and/or second clutch device or a relevant release lever mechanism.
The drive release device acts in particular to reduce the maximum value of the power transferred by the drive device to the release lever device of the first and/or second clutch device. This maximum value is the maximum power which has to be discharged by the drive device in the direction of the relevant release lever device in order to produce any actuation of this release lever device.
The drive release device preferably has an energy accumulator which assists both actuation of the first and second clutch device under predetermined conditions, namely particularly so that a force of the energy accumulator device is superimposed on a force transferred by the drive device to a relevant release lever device whereby the force exerted by the drive device and the energy accumulator device on the release lever device of the first and/or second clutch device is in particular a pressurised force and wherein these forces are under predetermined conditions in the same direction at the relevant release lever device.
Where necessary these forces are directed opposite at the relevant release lever device when this release lever device is loaded with substantially less force and are in the same direction when this release lever device is loaded with a larger force so that in particular the maximum drive power required is reduced.
According to the invention it is proposed that a torque transfer device has a spring device.
The spring device has the effect with predetermined actuating processes of the release lever device that an actuating force exerted on the relevant release lever device has a proportion which is transferred by the spring device, as well as a proportion which is transferred by the drive device. These proportions of the force have under predetermined conditions the same active direction wherein the first and/or second release lever device is loaded in particular with a pressurised force. Where necessary the active direction of these forces on the relevant release lever device is opposing in the case of lower forces and in the same direction in the case of larger forces wherein the resulting force acting from an actuating device on the release lever device is preferably a pressurised force.
The spring device is configured as a mechanical spring device, such as spiral spring or torsion spring, or as an electromagnetic spring device or as a hydraulic spring device or as a pneumatic spring device or in some other way.
The torque transfer device has at least a change-over device which can be switched into different switch positions.
The change-over device acts in at least a first shift position so that the drive device loads the release lever device of the first clutch device and in at least a second shift position so that the drive device loads the release lever device of the second clutch device, namely in particular each time with a pressurised force.
The preferably electronically controlled change-over device is more particularly designed to be hydraulic and/or electric and/or electromagnetic and/or pneumatic and/or mechanical.
The change-over device preferably acts in at least a third shift position such that the drive device loads neither the release lever device of the first clutch device nor that of the second clutch device.
In this third shift position the signal or force transfer stretch between the drive device and the release lever devices of the first and second clutch device is preferably interrupted or uncoupled. It is also preferred if this signal or force transfer stretch in the third shift position is not interrupted whereby the drive device does not load the release lever devices and whereby the first and/or second clutch device can relax.
According to the invention an at least in part hydraulically designed actuating device of the first and/or second clutch device has at least one valve device.
Through this valve device it is possible to control which and where necessary whether any of the release lever devices is loaded by means of hydraulic fluid.
According to the invention it is proposed that a first release lever device of the first clutch device under predetermined conditions rotates opposite a first input or output part of this clutch device. Furthermore a second release lever device of the second clutch device rotates under predetermined conditions opposite a second input part or output part of this second clutch device. The first and second release lever devices are mounted outside of the relevant input and output parts which under predetermined conditions rotate relative to the relevant release lever device, and where necessary outside of component parts which are coupled rotationally secured and non-detachable to these input and output parts and which under predetermined conditions rotate relative to the relevant release lever device.
By outside is to mean in particular axially or radially outside or that the relevant release lever device does not extend through different openings in the component part or input part or output part which are connected together by a channel or the like. By outside a component part or input or output part is to mean in particular that the relevant release lever device does not extend through a full-length opening or full-length channel or the like of the component part or input or output part.
A transmission device is in the sense of the present invention more particularly a device which can be shifted stepped or continuously as well as with or without interruption in the tractive force into diffe
Berger Reinhard
Hirt Gunter
Meinhard Rolf
Darby & Darby
LuK Lamellen und Kupplungsbau Beteiligungs KG
Rodriguez Saul
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