CVT

A technology for transmissions and transmission housings, applied to components with teeth, belts/chains/gears, mechanical equipment, etc., which can solve problems such as short life, high friction of CVT-transmissions, etc.
CN103180642BActive Publication Date: 2016-08-17SCHAEFFLER TECH AG & CO KG
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SCHAEFFLER TECH AG & CO KG
Publication Date
2016-08-17

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Abstract

The invention relates to a CVT transmission for an essentially continuously variable transmission of a torque, comprising a first conical disk pair on the input side having a first adjusting disk moving in the axial direction relative to a first counter disk, a second conical disk pair on the output side having a second adjusting disk moving in the axial direction relative to a second counter disk, and further comprising a belt means which is received by the first and the second conical disk pair for transmitting the torque from the first conical disk pair to the second conical disk pair, an essentially electrically driven first adjustment device for pressing the belt means between the first counter disk and the first adjusting disk and an essentially electrically driven second adjustment device for pressing the belt means between the second counter disk and the second adjusting disk. According to the invention, the second adjustment device can be actuated independently from the first adjustment device for varying the pretension of the belt means. As a result, the CVT transmission is characterized by little wear over a high torque range.
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Description

technical field

[0001] The invention relates to a continuously variable transmission (CVT) by means of which the torque transmission of a drive engine of a motor vehicle, for example, can be continuously adjusted. Background technique

[0002] For example, JP 2005036855 A discloses a CVT transmission designed as a winding transmission for the small power range. The CVT transmission has two cone pairs coupled to each other by plastic belts, wherein one cone pair can be moved axially relative to a stationary cone, whereby the belts can act with different radii on the The corresponding cones are aligned to change the transmission ratio. In order to move the cone pair axially, exactly one adjusting device is used, which moves a cone on the input-side cone pair and is connected to the axially displaceable cone of the output-side cone pair by means of gears. coupling.

[0003] CVT-transmissions of this type are preferably used in relatively small power and torque ranges, since ...

Claims

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