Measuring and testing – Dynamometers – Responsive to torque
Reexamination Certificate
2001-09-02
2003-06-10
Williams, Hezron (Department: 2855)
Measuring and testing
Dynamometers
Responsive to torque
Reexamination Certificate
active
06575047
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Field of the Invention
The present invention relates to a torque sensor, to a continuously variable transmission that includes a torque sensor, as well as to a method for controlling a torque sensor associated with a continuously variable transmission.
2. Description of the Related Art
Torque sensors, continuously variable transmissions, as well as methods for controlling torque sensors and continuously variable transmissions are already known.
The invention is directed to a torque sensor with a different design, to a continuously variable transmission with a different design, as well as to a different method for controlling a torque sensor and/or for controlling a continuously variable transmission.
In accordance with one particular aspect, the invention is directed to a more consistent continuously variable transmission having a torque sensor.
In accordance with one particular aspect, the invention is directed to a torque sensor as well as to a continuously variable transmission that have a simpler design and that ensure higher operational reliability.
In accordance with one particular aspect, the invention is directed to a method for operating a torque sensor and/or a continuously variable transmission that can be conducted with little effort and high operational reliability.
The objects of the invention are achieved with a torque sensor that displays at least one of the features that are explained in the following description and claims, or that are shown in the drawing figures.
The objects of the invention are furthermore achieved with a continuously variable transmission that has at least one of the features that are explained in the following description or claims, or that are shown in the drawing figures.
The objects of the invention are furthermore achieved with a method for controlling a torque sensor, or for controlling a continuously variable transmission having a torque sensor that has at least one of the features that are explained in the following description or claims, or that are shown in the drawing figures.
SUMMARY OF THE INVENTION
The invention is directed in particular to a torque sensor that has at least one input member as well as at least one output member, and a transmitting element that is arranged between the input member and the output member and which can at least be moved in the radial direction. The transmitting element is arranged particularly in the axial direction between the input member and the output member of the torque sensor. The transmitting element can transmit power and possibly torque between the input member and the output member. Torque can be applied to the output member externally, wherein the transmitting element causes the output member to generate a pressing force.
In accordance with the present invention, the input member is in particular a component that is rotatably arranged, and the output member is in particular a component that is arranged in a fixed manner in relation to a shaft. The invention, however, should not thereby be limited. In accordance with the present invention, the input member preferably consists of a disk-like component, as does the output member. In accordance with the present invention, the output member may be coupled with a disk and/or a conical disk of a continuously variable transmission, or it can be designed as one piece together with the disk.
The transmitting element in accordance with the invention is particularly a component that is movably arranged relative to the output member and/or relative to the input member. The transmitting element can have the design of a ball, a roller, a spreader body, or other design.
The driving power generated by the output member in accordance with the present invention should be interpreted particularly as power that is applied onto the output member and can be passed on to surrounding components and preferably is linear.
The transmitting element's ability to move in the radial direction is designed in accordance with the present invention in such a way that the transmitting element can also be moved in the circumferential direction. In accordance with the present invention, it is particularly provided that the transmitting element is additionally movably arranged in at least one other direction relative to the input and/or output member, and particularly in the circumferential direction and/or in the axial direction.
In accordance with the invention there is particularly provided a torque sensor for a continuously variable transmission that can transmit torque in a frictionally-engaged manner. The power that is transmitted through at least one transmitting element between the input member and the output member has a component of power acting in the circumferential direction and a component of power acting in the axial direction. The continuously variable transmission is equipped with sets of disks, between which torque can be transmitted in a frictionally-engaged manner through an endless, torque-transmitting means. The power that is transmitted between the endless, torque-transmitting means and the respective disk set and/or the respective disks also has a component of power that acts largely in the circumferential direction. The torque sensor is associated with at least one of those disk sets. In accordance with the invention, the power component acting in the circumferential direction, for the power that is transmitted between the input member and the output member of the torque sensor, is proportional to the power component acting in the circumferential direction that is transmitted by the disk set associated with the torque sensor between the endless, torque-transmitting means and that disk set. The proportionality factor between those power components acting in the circumferential direction is preferably equal to 1, so that the power component transmitted between the input member and the output member in the circumferential direction corresponds with the power component transmitted in the circumferential direction between the disk set that is associated with that torque sensor and the endless, torque-transmitting means.
In accordance with the invention, a torque sensor is provided that is equipped with an input member as well as an output member and a transmitting element that is arranged between the input member and the output member. The transmitting element is supported against a ramp of the input member and the output member, respectively, during the transmission of torque and/or power between those parts. Torque that is applied to the input member generates a pressing force on the output member.
For the purpose of torque transmission in a continuously variable transmission, the respective disk sets of that transmission are loaded by a pressing force, particularly an axially acting pressing force. As a function of the torque that is to be transmitted, and possibly as a function of the transmission ratio that is established during torque transmission, the necessary pressing forces that are required to be able to transmit the torque that is to be transmitted between the disk sets are available for each of the disk sets. In accordance with the invention—both during a pushing operation as well as during a pulling operation—the same tracks and/or ramps that are arranged on the input member and/or the output member are acting, as are the same transmitting elements that are provided on the torque sensor, wherein the deviation between the pressing force generated by the torque sensor and the pressing force on the respective disk set required for torque transmission is largely identical during a pushing operation and a pulling operation. In accordance with the invention, preferably a feature is provided so that during a pushing operation as well as during a pulling operation, with a given torque that is supposed to be transmitted and/or a given transmission ratio, the same tracks and/or ramps of the torque sensor are used for generating the pressing force, without the deviation of the generated pressing force being differ
Haas Wolfgang
Mair Ulrich
Reik Wolfgang
Mack Corey D.
Mangels Alfred J.
Williams Hezron
WK Lamellen und Kupplungsban Beteiligungs KG
LandOfFree
Torque sensor for a continuously variable transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Torque sensor for a continuously variable transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Torque sensor for a continuously variable transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3132609