Abstract:
The earring device ( 1 ) includes: a shaft ( 2 ) suitable for passing through the orifice; a catch ( 3 ) hinged with the shaft, the catch being suitable for adopting an unlocked position, wherein the catch is aligned with the shaft and a plurality of locking positions ( 17 ) along the shaft, wherein the catch is arranged transversely relative to the shaft; elements ( 17, 31, 32, 33 ) for reversibly locking the catch in one of the locking positions. The device makes it possible to adapt the earring to the thickness of the ear wearing same. The device is also suitable for other parts of the body liable to be pierced for the purposes of visual appeal.

Description:
BACKGROUND OF THE INVENTION 
     Field of the Invention 
     The invention relates to the field of jewellery, notably jewellery inserted via a body piercing, particularly an earring. 
     Description of the Related Art 
     Earrings generally have one size envisaged to fit, insofar as possible, all shapes and sizes of ears. However, ears can have shapes and sizes that can vary significantly; as such, such earrings rarely fit perfectly, such that, for example, the piece of jewellery decorating same is supported poorly and may adopt an unattractive position. 
     BRIEF SUMMARY OF THE INVENTION 
     The aim of the invention is particularly that of providing a device for attaching a piece of jewellery via an orifice created in the body, particularly an earring device, suitable for providing enhanced support of the jewellery on the ear. 
     According to the invention, such a device for attaching a piece of jewellery via a through orifice created in the body, particularly an earring device, consists of: 
     a shaft suitable for passing through the orifice; 
     a catch hinged with the shaft, the catch being suitable for adopting an unlocked position, wherein the catch is aligned with the shaft and a plurality of locking positions along the shaft, wherein the catch is arranged transversely relative to the shaft; 
     means for reversibly locking the catch in one of the locking positions. 
     Advantageously, this device further comprises means for reversibly locking the catch in the unlocked position thereof. 
     The catch may comprise a bolt and elastic means for holding the bolt in contact against the shaft, the shaft may comprise housings for receiving the bolt, the locking means being suitable for comprising the housings, the bolt and the elastic means. In this way, when the bolt is engaged in one of the housings, according to the position of the housing on the shaft, the catch is held in the unlocked position thereof or in one of the corresponding locking positions. A force greater than a locking force applied to the bolt by the elastic means makes it possible to extract the bolt from the housing thereof. 
     Preferably, the catch is in the shape of a bead held in contact, preferably rolling, against the shaft by the elastic means. The housings may be transverse notches relative to a direction of travel of the bolt along the shaft. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
       Some embodiments and alternative embodiments will be described hereinafter, as non-limiting examples, with reference to the appended figures wherein: 
         FIG. 1  is a schematic, partially transparent view of a device according to the invention for an earring, in a locking position; 
         FIG. 2  is a schematic view similar to that in  FIG. 1 , of the device in  FIG. 1 , in the unlocked position thereof; and, 
         FIG. 3  is a view along III of the device in the position in  FIG. 2 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 
     The figures illustrate an earring device  1  comprising a shaft  2 , envisaged to pass through the ear of a person wearing the earring, and a catch  3 , envisaged to hold the earring on the ear.  FIG. 1  further illustrates a mount  4  for a piece of jewellery  7 , designed separately, and envisaged to be attached to an attachment head  6  formed at the front of the shaft  2 . 
     The device  1 , regardless of the position thereof, particularly an unlocked position or a locking position, is substantially symmetrical relative to a plane P, which is that in  FIGS. 1 and 2 . 
     In the position in  FIG. 1 , the catch  3  is arranged transversely to the shaft, such that when the shaft is inserted through the ear, the catch arranged behind the ear, prevents the accidental removal of the earring fitted with the device  1 . 
     An example of a piece of jewellery decorating the earring, is represented schematically in dot and dash lines in  FIG. 1 ; attached to the mount  4 , preferably by soldering, it helps, with the catch, hold the earring on the ear, the ear being engaged between the piece of jewellery  7  and the catch  3 . A guide pin  5  extending to the rear of the mount  4  is provided to engage with a complementary shape  10  of the head  6 , in order to ensure the correct positioning of the piece of jewellery  7  in relation to the device  1 . 
     The head  6  of the shaft  2  is equipped with a spring ring  8  provided for fastening inside a housing  9  of the mount  4 , in order to attach the piece of jewellery  7  to the shaft  2 . A flat bar  11  extends from the head to the rear, along a direction X 2 . The bar  11  comprises two faces  12  parallel with each other and with the plane of symmetry P; the bar forms an oblong slot  13  passing through the bar from one face  12  to the other face  12  and extends along the direction X 2 . The rear end  14  of the bar  11 , opposite the head  6 , has a circular shape, in the plane of  FIG. 1 . An end notch  16  is formed in said end. Five side notches  17  are formed in a left lateral edge (in the position in  FIGS. 1 and 2 ) of the bar  11 . The notches are closer to the head  6  than the rear end  14 . The notches are portions of cylinders. 
     The catch  3  extends longitudinally along an axis X 3 , substantially merged with the direction X 2  when the device is in the unlocked position thereof. It has a substantially cylindrical shape having a diameter D 3 . 
     The catch  3  comprises a first part, on the right in  FIG. 1 , forming a cap  21  consisting of two flanges  22  (see  FIG. 3 ) between which the bar  11  is slidably mounted. A stud  23  is borne by the cap  21 , at a distance from the longitudinal ends  24 ,  26  of the catch  3 , particularly at a distance from a first longitudinal end  24  forming a free and open end between the two flanges  22 , of the cap  21 . 
     The catch  3  comprises a second part, on the left in  FIG. 1 , forming a cylindrical housing  27 . The housing  27  is closed on the side of the second longitudinal end  26 , longitudinally opposite the first longitudinal end  24 . On the other side, on the side of the stud  23 , the second part comprises a cylindrical passage  28  having a smaller diameter than that of the housing  27 ; a tapered neck  29  joins the housing  27  and the passage  28 . The housing  27  contains a ball  32  and a helical spring  31  arranged to push back the ball  32  towards the neck  29 . The catch  3  further comprises a bead  33 , housed in the passage  28 , and held pressed against the shaft  2  by the ball  32 , under the action of the spring  31 . 
     A bridge  36  connects the two flanges  22 , near the first end  24  of the catch  3 . The bridge is envisaged to be inserted into a recess  37  provided in a right edge of the shaft, in order to abut against same; in this way, when the catch is in the unlocked position, the second part cannot tip to the right, due to the abutment of the bridge  36  in the recess  37 , but merely to the left, i.e. in the position illustrated in  FIG. 1 . 
     When the device  1  is in the unlocked position in  FIGS. 2 and 3 , the bead engaged with the rear notch  16 ; it is held there by the ball  32 , under the pressure applied by the spring  31 , such that the catch remains naturally aligned with the shaft, facilitating the positioning of the earring through the ear. Rotating the catch to the left, about the rear end  14  of the shaft and the stud  23  in the slot  13 , requires the bead to move up along one side of the rear notch  16 , applying force against the action of the spring, pushing back the ball  32  towards the second end  26  of the catch  3  until the bead  33  comes out of the notch  16 . 
     The rotation may be continued until the catch is substantially perpendicular to the shaft, and, followed by a translation of the catch  3  along the shaft  2  and towards the head  6 , guided by the stud  33  engaged in the slot  13 . During this translation, the bead  33  first engages with the rearmost of the side notches  17 ; if the translation is continued towards the head  6 , the bead engages with one and then the other of the following side notches  17 . Each time, the bead comes out of the notch with which it is engaged, moving up along one side of this notch, as such applying a force against the action of the spring, pushing back the ball  32  towards the second end  26  of the catch  3  until the bead  33  comes out of the notch. Among the side notches  17 , the notch enabling the best hold of the ring  1 , 7  on the ear is chosen, according to ear thickness and the visual appeal and comfort sought. 
     The catch  3  and the notches  16 ,  17  are designed such that during normal use of the earring, the bead continues to remain engaged with the chosen notch, with the force required of the user of the earring to release the bead from a notch not being excessive. 
     In the example illustrated, in the unlocked position in  FIGS. 2 and 3 , the shaft and the catch are substantially inscribed in a cylinder having a diameter D 3  of 0.95 mm. 
     Obviously, the invention is not limited to the examples described herein. 
     In this way, unlike the embodiment described above, the cap may be formed by the shaft and the flat bar may be formed by the catch. 
     A device according to the invention is also particularly advantageous, because the catch remains rigidly connected to the shaft and thus cannot be misplaced.