| 摘要 |
A transmission for transmitting torque smaller than an adjustable value includes three transmitting elements. The first transmitting element includes a non-circular tunnel and a shoulder. The second transmitting element includes a non-circular insert inserted in the non-circular tunnel, wedges and a shoulder. The third transmitting element includes wedges engaged with the wedges of the second transmitting element. An elastic element is compressed between the shoulders of the first and second transmitting elements so as to engage the wedges of the second transmitting element with the wedges of the third transmitting element. A first collar includes a thread. A second collar includes a thread engaged with the thread of the first collar so that the collars contain the transmitting elements and the elastic element and that the collars can be rotated relative to each other to change the relative axial position between them and adjust the adjustable value.
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