Belt drive for a motor-driven tool
AssigneeMakita Corporation
InventorManfred DOERING
Life of this patent
Estimating the term…
Abstract
In order to provide a belt drive for a motor-driven tool with a first, drive-side belt pulley, a second, tool-side belt pulley and a belt that can be tensioned over the first and the second belt pulley, that is characterised by being easier to use, it is proposed that a cam, rigidly connected with a shaft, is arranged in the first or second belt pulley, whereby during a rotational movement of the shaft the belt pulley can be moved from an eccentric arrangement in relation to the shaft into a concentric arrangement by way of a translational movement and a rotational movement of the belt pulley.
Claims18
Belt drive for a motor-driven tool, with a first,
- work-side belt pulley,
- a second, tool-side belt pulley and
- a belt that can be tensioned over the first and the second belt pulley, characterised in that a cam, rigidly connected to a shaft is arranged in the first or second belt pulley,
- whereby during a rotating movement of the shaft the belt pulley can by way of the cam be moved from an eccentric arrangement with regard to the shaft into a concentric arrangement via a translational and a rotational movement of the belt pulley.
Method of assembling a belt on a belt drive of a motor-driven tool which has a first, drive-side belt pulley and a second, tool-side belt pulley in which
- a cam, rigidly connected to a shaft, is assembled with the first or second belt pulley whereby the cam is arranged in the belt pulley in such a way that the belt pulley is in an eccentric arrangement with the shaft.
- the belt is applied in an untensioned state onto the first and second belt pulley, and
- to transfer the belt from the untensioned state into a tensioned state the shaft performs a rotational movement, whereby during the rotational movement of the shaft the belt pulley is moved from an eccentric arrangement in relation to the shaft into a concentric arrangement by way of a translational movement and a rotational movement of the belt pulley.
Dependencies are inferred from the claim text.