| 摘要 |
<p>An adjustable wrench (1) comprises a handle (10), a head portion (11) formed at one end of the handle, and an adjusting unit (16). The head portion (11) further includes a fixed jaw (12) and a movable jaw (13), which forms a clip surface for clipping a screwed part (20). The movable jaw (13) is provided with a slide rod (131) at a bottom side thereof that is retained along a slot (14) extended transversely across the head portion (11). The adjusting unit (16) controls the displacement of the movable jaw (13) along the slot (14). The ratio of a maximal outer width (W0) to a maximal inner width (W1) is selected from three ranges ≤ 210% - ≥ 150%, ≤ 180% - ≥ 150% or ≤ 175% - ≥ 150% so that the operation of the wrench (1) within a limited space can be facilitated, attaining the aim of quickly loosening the screwed part.
</p> |
