| 摘要 |
Watch case comprising an unfolding clasp for a flexible strap, said unfolding clasp comprising: a middle ( 1 ) connected to a first end of the strap, a base ( 3 ) connected to the second end of the strap, an extension ( 2 ), connected in articulated fashion to the middle ( 1 ) and to the base ( 3 ), wherein the articulations ( 20, 21 ) between the middle ( 1 ) and the extension ( 2 ) and between the base ( 3 ) and the extension ( 2 ) are arranged in such a manner as to allow the middle, the extension and the base to superimpose in folded position, and to be juxtaposed in unfolded position, a regulating cam ( 34 ) for holding by compression and/or friction the strap against the base, the cam being capable of being swung to increase or reduce in a reversible manner the length of in folded position of the strap.
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