| 摘要 |
A rotary power tool having a housing (10) with a tubular extension (12), a rotation motor located in the housing, and an output shaft (13), wherein the output shaft (13) comprises a first section (23), a second section (26) and a connection device (30) forming a drive connection between the shaft sections without any radial play but with a flexibility to angle deviations between the shaft sections (23, 26), the connection device (30) including a sleeve element (31) with a conical socket portion (32) for mounting on a conical surface (33) on the first shaft section (23), a recess (34) of rectangular cross section for torque transfer to a matching rectangular projection (35) on the second shaft section (26), and a ball bearing (43) mounted between a cylindrical socket portion (42) on the sleeve element (31) and a cylindrical end portion (36) of the second shaft section (26) for providing an accurate radial guidance and support of the rear end portion (36) of the second shaft section (26) relative to the sleeve element (31) under a certain flexibility to angle deviations between the two shaft sections (23, 26).
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