| 摘要 |
<p>A power tool comprising:- a driving motor; - a footer adapted to receive therein a working tool such as a screwdriver or a drill (708); and - a coupling system (737) whose first-side shaft is connected to said driving motor and whose second-side shaft is connected to said footer, said coupling system comprising:- a planetary gear comprising the following gear elements:i a planet carrier; ii at least one planet gear mounted on said planet carrier; and at least one of:iii a sun gear; and iv a ring gear; a first-side mechanism comprising a chamber and said first-side shaft having a connection end connected to said chamber, and a free end; at least one transfer arrangement, the or each such arrangement comprising a transfer mechanism and a transfer shaft having a first end connected to said transfer mechanism; and a second-side mechanism comprising said second-side shaft; said chamber being fluidly coupled to said transfer mechanism for transfer of rotary motion therebetween, and being connected to one of the gear elements (i), (iii) and (iv); said transfer shaft being connected to one of the gear elements (i) to (iv); and said second-side shaft being connected to one of the gear elements (i). such that each of said gear elements is only coupled to one of said chamber, said transfer shaft and said second-side shaft.</p> |
