Machine element or mechanism – Gearing – Interchangeably locked
Reexamination Certificate
2002-08-15
2004-06-29
Pang, Roger (Department: 3681)
Machine element or mechanism
Gearing
Interchangeably locked
C074S335000, C074S340000
Reexamination Certificate
active
06755089
ABSTRACT:
TECHNICAL FIELD
The invention relates to a torque transfer device which has in particular a double clutch transmission.
BACKGROUND
A torque transfer device is already known which is designed as a double clutch transmission (see G. Lechner, H. Naunheimer; Vehicle transmissions; Berlin 1994). This double clutch transmission has a gear input shaft which is divided into a solid and a hollow shaft. Two drive trains are provided for the power flow. One clutch thereby serves the second and fourth gear and a second clutch serves the first and third gear. The gears of the relevant train which is not active can be preselected. Gear change is then carried out by changing over the coupling from one clutch to the other clutch.
The object of the invention is to provide a torque transfer device which has a different configuration.
According to a particular aspect the object of the invention is to provide a torque transfer device of a different configuration which has a double clutch transmission.
According to a further aspect the object of the invention is to provide a torque transfer device which has a structurally simple design and which can be manufactured cost-effectively and which, particularly when fitted in a motor vehicle ensures a good comfortable ride.
This is achieved through a torque transfer device which has at least one feature from those described in the following description or in the claims or are illustrated in the accompanying drawings.
The object of the invention is further achieved through a control device for controlling a torque transfer device which has at least one feature from the features described in the following description or claims or illustrated in the accompanying drawings.
The object is further achieved through a method for operating a torque transfer device which has at least one feature from the features described in the following description or claims or illustrated in the drawings.
The object is further achieved through a torque transfer device according to claim 1 or claim 2 or claim 4 or claim 6.
The object is further achieved through a control device for controlling a torque transfer device according to claim 4.
The object is further achieved through a method for operating a torque transfer device according to claim 5.
A torque transfer device according to the invention has at least a first, at least a second and at least a third shaft as well as a transmission device. The first and/or second and/or third shaft is at least in part a constituent part of the transmission device or is mounted outside of the transmission device.
A torque transfer device is in the sense of the present invention a device which can transfer torque and which can be shifted into different shift positions. Preferably a torque transfer device has in the sense of the present invention at least a clutch device as well as at least a transmission device.
A transmission device is in the sense of the present invention in particular a device which can be shifted into different shift positions stepped or continuously as well as with or without tractive force interruption by generating a different transmission ratio between two predetermined shafts. Controlling the shift processes of the transmission device can be undertaken automatically or manually or part-automatically or automatically with additional manual override facility or in some other way. Shift processes in the transmission device are controlled in particular electronically. It is particularly preferred if the transmission device is configured so that shifting between different transmission stages is possible without any interruption in the tractive force.
A transmission stage in the sense of the present invention is in particular component parts of a transmission device, such as toothed wheels which can cause torque to be transferred between two predetermined shafts.
According to the invention the transmission device has several different transmission stages of which one part can be shifted between the first shaft and third shaft and of which one part can be shifted between the second shaft and third shaft.
In these transmission stages torque is transferred directly or indirectly between the first and third shaft or between the second and third shaft.
It is also preferred if the torque between the first shaft and third shaft or between the second shaft and third shaft is transferred indirectly.
By direct transfer is meant in the sense of the present invention that torque from one shaft or a component part coupled rotationally secured thereto is introduced directly into the other shaft or a component part coupled rotationally secured to this shaft, without the interposition of any further components.
By indirect transfer of the torque is meant in the sense of the present invention that the torque is introduced from one shaft or a component part connected rotationally secured to this shaft into an intermediate component part or assembly of such components, and then the torque is passed from this intermediate component part to the other shaft or to a component part connected rotationally secured thereto.
The torque transfer can be carried out in the sense of the present invention through toothed wheels or contact means or in some other way. The spline of the toothed wheels is straight or inclined or designed in some other way. The toothed wheels can be in particular bevel wheels or spur wheels and internally or externally cogged wheels.
The torques can in particular also be transferred through friction wheels. According to the invention at least one transmission stage which can be shifted between the first and third shaft has the same transmission ratio as a transmission stage which can be shifted between the second shaft and third shaft.
One part of the transmission stages can be shifted between the first shaft and third shaft and one part of the transmission stages can be shifted between the second shaft and third shaft.
The transmission device is preferably configured so that the torque flow through the torque transfer device can flow through a transmission stage arranged between the first and second shaft or alternatively through a transmission stage arranged between the second and third shaft or both through a transmission stage arranged between the first shaft and third shaft as well as through a transmission stage arranged between the second shaft and third shaft.
This is further achieved through a torque transfer device according to claim 2.
A torque transfer device according to the invention has at least one first, at least one second and at least one third shaft, as well as a transmission device. The transmission device can be shifted into different shift positions. The transmission device furthermore has several transmission stages which differ at least in part through the transmission ratios which are or can be shifted in these transmission stages. A part of these transmission stages can be shifted between the first and third shaft and a part of these transmission stages can be shifted between the second and third shaft.
In a preferred embodiment of the invention a torque transfer device according to the invention is integrated in a vehicle which has a vehicle drive device which is preferably designed as an internal combustion engine and loads a crankshaft in a predetermined rotational direction. Several of the transmission stages are preferably designed so that with this rotational direction of the crankshaft in the different transmission stages the same rotational direction of the third shaft is effected each time whereby the transmission stages are preferably arranged in the torque flow between the crankshaft and third shaft or can be shifted into this torque flow.
The transmission stages are preferably designed so that with a rotational direction of the crankshaft which is preset through the vehicle drive device a rotational direction of the third shaft is produced which has the effect of driving the motor vehicle in the forward drive direction.
Where necessary at least a further transmission stage is configur
Darby & Darby
LuK Lamellen und Kupplungsbau Beteiligungs KG
Pang Roger
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