Clasp for jewelry item
The present invention provides for a universal stud earring clasp that allows for fastening jewelry and jewelry devices. The present invention facilitates and improves the clasp system for jewelry by providing for a universal fastening device that is particularly compatible with stud earrings, but not limited to stud earring compatibility. The clasp provides for a greater pressure surface and a more ergonomic grip. People from almost all age ranges can handle the clasp, and the clasp is cost-efficient for manufacturing. The clasp also provides for a stud earring clap that is compatible with pins from the ALPA locking system. This invention solves the unmet need of a more secure clasp alternative to existing stud earrings and jewelry items.
1. A clasp device for a jewelry article, the clasp comprising:
a base body ( 100 ) having a horizontal base ( 101 ) pierced at its center with an orifice for receiving a notched rod ( 1 ), said base body ( 100 ) comprising a vertical guide cylinder ( 102 ), a first support leg ( 110 ) and a second support leg ( 120 ), wherein the first support leg has in its lower part a first bore ( 111 ) intended to receive a horizontal assembly and hinge pin ( 800 ), wherein the second support leg ( 120 ) has in its lower part a second bore ( 121 ) intended to receive said horizontal assembly and said hinge pin ( 800 );
a first jaw ( 200 ) having a first leg ( 210 ) having a third bore ( 211 ) and a second leg ( 220 ) having a fourth bore ( 221 ), said third and fourth bores being configured to come in alignment with said first and second bores ( 111 , 121 );
a second jaw ( 300 ) having a first leg ( 310 ) having a fifth bore ( 311 ) and a second leg ( 320 ) having a sixth bore ( 321 ), said fifth ( 311 ) and sixth ( 321 ) bores being configured to come in alignment with said first and second bores ( 111 , 121 );
wherein edges of said first and second jaws ( 200 ; 300 ) have a slightly convex profile and configured to cooperate with sides of said support legs ( 110 , 120 ) to allow a slight rotation about an alignment axis of the bores for a purpose of implementing a locking mechanism of a notched pin.
2. The device according to claim 1 characterized in that the base body ( 100 ) comprises, above said first and second bore ( 111 , 121 ) a horizontal reinforcing beam ( 103 ) connecting said support legs ( 110 , 120 ) to said guide cylinder ( 120 ), wherein said reinforcing beam ( 103 ) has a vertical pin ( 104 ) disposed in a middle of a space between said guide cylinder ( 102 ) and the support leg ( 120 ), said vertical pin ( 104 ) being configured to receive a return spring ( 400 ) for the locking mechanism.
3. The device according to claim 2 characterized in that said return spring ( 400 ) has two ends having an angle of between 70° and 110° and preferably equal to 85.5°, and
wherein said first jaw ( 200 ) has a first guide groove ( 230 ) for guiding a first end of said return spring ( 400 );
wherein said second jaw ( 300 ) has a second guide groove ( 330 ) for guiding a second end of said return spring ( 400 );
wherein guiding said first and second ends of said return spring ( 400 ) provides a restoring force of the jaws to their initial position when a pressure on said jaws is released.
4. The device according to claim 3 characterized in that the ends of said spring are curved so as to facilitate their sliding in said first ( 230 ) and second ( 330 ) guide grooves.
5. The device according to claim 1 characterized in that
said first jaw ( 200 ) has a first bearing surface ( 250 ) and fixed thereto, a first locking blade ( 500 ) having a thickness which corresponds to said notched rod ( 1 ); and
said second jaw ( 300 ) has a first bearing surface ( 240 ) and fixed thereto, a second locking blade ( 600 ) having a thickness which corresponds to said notched rod ( 1 );
wherein said first and second locking blades are U-shaped and are positioned relative to one another so as to form a central space which can be enlarged when exerting a pressure will cause rotation of said first and second jaws ( 200 , 300 ).
6. The device according to claim 5 characterized in that it comprises a cover ( 700 ) abutting on said first and second blades, wherein said cover closes the device.
7. The device according to claim 5 characterized in that said guide cylinder ( 102 ) comprises, in its upper part, a slightly rounded shape so as to facilitate respective movements of said first and second blades ( 500 , 600 ) when said first and second jaws ( 200 , 300 ) slightly rotate.
8. The device according to claim 1 , characterized in that said first and second jaws ( 200 , 300 ) have a shape of a duckbill comprising an outer surface, a surface profile for making it possible to increase a user's feeling of a pressure exerted by his fingers.
9. The device according to claim 1 , characterized in that the first jaw comprises a spacing between said first and second legs equal to D, and in that said second jaw ( 300 ) has a spacing between said first and second legs equal to d, with d<D.
10. The device according to claim 1 , characterized in that said base body ( 100 ) comprises a recess between an outer contour of said guide cylinder ( 102 ) and a vertical pin so as to facilitate an introduction of a spiral return spring ( 400 ).
11. The device according to claim 1 , characterized in that said guide cylinder ( 102 ) and a first and second blades ( 500 , 600 ) are configured to allow an insertion of an ALPA type rod.