| 摘要 |
<p>A starter motor comprising a fixed frame (11), an electric motor (13) carried by the frame (11), an output shaft (21) journaled for rotation and carrying an output pinion gear wheel assembly (22) for engagement, in use, with a ring gear of an internal combustion engine to be started, and, an epicyclic reduction gear mechanism (15) the sun gear (16) of which is driven by said electric motor (13), and the planetary gear carrier (18) of which drives said output shaft (21), the annular gear (19) of said epicyclic reduction gear mechanism (15) being fixed to a first component (23) having therein a recess (24) generally centred on the axis of the annular gear (19), there being provided a second component (25) fixed to said frame (11), said second component (25) having an annular projection (27) received within said recess (24) of said first component (23), the transverse dimensions of the projection (27) of the second component being less than those of the recess (24) of the first component by an amount such that relative angular movement of the first and second components can occur, some, or all of the space defined between the wall of the projection (27) and the wall of the recess (24) containing resilient material (28) whereby such relative movement of the first and second components is resisted.</p> |
