A clasp for a watch bracelet or for a garment belt includes at least two unfolding arms articulated to each other, a first unfolding arm includes a first end attached to a bracelet strand and a second end pivotally articulated to a first end of a second unfolding arm, a second end of the second unfo
A clasp for a watch bracelet or for a garment belt includes at least two unfolding arms articulated to each other, a first unfolding arm includes a first end attached to a bracelet strand and a second end pivotally articulated to a first end of a second unfolding arm, a second end of the second unfolding arm is traversed by an arbour about which there is articulated a cover with first and second flaps and to which another bracelet strand is attached. The clasp includes a push button fastening system, including at least one push button that controls a bolt pivotally mounted on the cover, the bolt includes a first hook cooperating with a second hook fitted to the first unfolding arm and keeping the second hook locked when the push button is not manually activated, the first hook being kept engaged with the second hook by an elastic structure.
대표청구항▼
1. A clasp for a watch bracelet or for a garment belt comprising: at least two unfolding arms articulated to each other, wherein a first unfolding arm comprises a first end attached to a bracelet strand and a second end pivotally articulated to a first end of a second unfolding arm, wherein a second
1. A clasp for a watch bracelet or for a garment belt comprising: at least two unfolding arms articulated to each other, wherein a first unfolding arm comprises a first end attached to a bracelet strand and a second end pivotally articulated to a first end of a second unfolding arm, wherein a second end of the second unfolding arm is traversed by an arbour about which there is articulated a cover provided with first and second flaps and to which another bracelet strand is attached, wherein the clasp also comprises a push button fastening system, wherein at least one push button that acts in a direction perpendicular to a longitudinal axis of symmetry of the clasp controls a bolt pivotally mounted on the cover about an axis extending perpendicular to the longitudinal axis of symmetry of the clasp, wherein the bolt comprises a first hook devised to cooperate with a second hook fitted to the first unfolding arm and to keep said second hook locked when the push button is not being manually activated, wherein the first hook is kept engaged with the second hook by an elastic structure. 2. The clasp according to claim 1, wherein the elastic structure takes a form of a plate cut into a U-shape and including two external arms, which press on the bolt to keep the first hook engaged with the second hook in the closed position of the clasp. 3. The clasp according to claim 2, wherein, when the at least one push button is actuated, the push button forces the bolt to pivot against an elastic force of the elastic structure, so that the first hook is released from engagement with the second hook. 4. The clasp according to claim 3, wherein, when actuated, the at least one push button acts on corresponding inclined surfaces of the bolt. 5. The clasp according to claim 4, wherein, when the at least one push button is actuated, the bolt slides via the inclined surfaces thereof along corresponding inclined surfaces provided on the push button. 6. The clasp according to claim 1, wherein, when the at least one push button is actuated, the push button forces the bolt to pivot against an elastic force of the elastic structure, so that the first hook is released from engagement with the second hook. 7. The clasp according to claim 6, wherein, when actuated, the at least one push button acts on corresponding inclined surfaces of the bolt. 8. The clasp according to claim 7, wherein, when the at least one push button is actuated, the bolt slides via the inclined surfaces thereof along corresponding inclined surfaces provided on the push button. 9. The clasp according to claim 1, wherein the at least one push button acts on the bolt in a transverse direction to the longitudinal axis of symmetry of the clasp and which extends in a plane of the clasp. 10. The clasp according to claim 9, wherein the bolt is pivotally mounted on the cover by a hinge which extends parallel to the direction of actuation of the at least one push button. 11. The clasp according to claim 10, wherein the hinge is formed of two pins which penetrate holes made in the flaps of the cover. 12. The clasp according to claim 1, wherein the second hook is provided on a side of the first end of the first unfolding arm, opposite the second end of said first unfolding arm, which is pivotally articulated on the first end of the second unfolding arm.
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