| 摘要 |
An adjustable wrench or spanner is provided. It includes essentially an elongated handle element (1) with a convex urging portion (11) at one end, an upper jaw element (2) with a concave urging portion (21), a lower jaw element (4) with a protrusion portion (44) and a ratchet assembly (3). The upper jaw element (2) is movable with the assistance of the two engaging urging portions (11, 21) and the lower jaw element (4) is adjustable with the assistance of the ratchet assembly (3). Two jaw portions (22, 41) are operable in tightening or loosening positions, without having to be disengaged from a hexagonal nut. When the jaw portions (22, 41) are opened in a loosening position, gripping edges (23, 42) of the jaw portions (22, 41) are allowed to shift from one width across flats (f1) to another width across flats (f2).
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