| 摘要 |
A bi-directional adjustable spanner (1) with a driving roller (40) comprises a head (2) and a handle (3). The head (2) includes a movable jaw (20) slidably received within a sliding groove of the head; an adjustable sliding rod; a retaining jaw (10) and a driving roller (40). The retaining jaw (10) has a receiving chamber (11); one side of the receiving chamber (11) having an opening facing the movable jaw (20). The receiving chamber (11) has a straight receiving groove with a U shape end; the receiving chamber (11) being communicated to the straight receiving groove. The driving roller (40) is received in the receiving chamber (11) of the retaining jaw (10); and a part of the driving roller (40) protruding out of the opening of the receiving chamber (11) towards the movable jaw (20). An elastomer (60) is received within the receiving groove. A resisting pin of the elastomer resists against the driving roller (40). A cover sheet is screwed to the opening of the retaining jaw by a screw.
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