| 摘要 |
The invention relates to a wrench (1) for unscrewing or screwing nuts and/or screws, which comprises a housing (2) with a handle, whereas inside the housing (2) a rotary clement (3) with a one direction locking element is located, placed between the housing (2) and the rotary element (3), to which a holder for a nut or a screw head is directly or indirectly mounted. The essence of the invention is that the wrench locking element has a form of a rolling element (3) placed in a wedge-shaped cavity (4) set by at least a first working wall (4a) and a second working wall (4b) with which this rolling element (3) is cooperating. The angle of inclination of the first working wall (4a) in relation to a circle set by the internal surface of housing (2) in which the rotary element (3) is rotating differs from the angle of inclination of the second working wall (4b) in relation to this circle. |
