| 摘要 |
A portable handheld suction/blower apparatus includes a motor-driven blower ( 1 ) and at least one air guide tube ( 3 ) connected to the blower ( 1 ) at a connecting location ( 2 ) to conduct flow. The connecting location ( 2 ) is configured at least as a double-winding connection ( 9 ) which has pairs of outer thread sections ( 4 ) of an outer winding ( 5 ) and inner thread sections ( 7 ) of an inner winding ( 8 ). The pairs are distributed about the periphery of the threaded connection. The periphery of the connecting location ( 2 ) is subdivided by the number of pairs of thread sections ( 4, 7 ) into a corresponding number of angle segments ( 10 ). The sum of angle extents (alpha, beta) of a pair of individual thread sections ( 4, 7 ) is in total less than an angle extent (gamma) of the corresponding angle segment ( 10 ).
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