| 摘要 |
An automatic screw clamping device for automatically tightening bolts fitted in a metallic mount member, which is hard to nail includes a casing (2), a rotator (4) disposed in the casing (2) in a manner that the rotator may rotate and move up and down, a biasing member (5) connected with the rotator (4) and the casing (2), and a covering member for covering over the casing (2). Fitments are provided on the lower end of the casing (2). The rotator (4) includes an inner periphery having an engaging portion (41) that can unrotatably mesh with the clamped member (n), and includes an outer periphery with a locking portion (42) which is unrotatably lockable to the casing (2). The rotator (4) locked to the casing (2) is engaged with the clamped member (n) to press the casing (2) downward. This may cause the casing (2) to be detached from the rotator (4), then the casing (2) turns and the fitments (71) enter into the corresponding fitment-receptive portions (82) of the washer member (8) disposed beneath the clamped member (n) until the casing (2) is fixed to the washer member (8), whereby the rotator (4) can be maintained in a position where the clamped member (n) is biased in a direction when being tightened.
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