EP3725181A1 - Device for opening and closing an article, especially made of leather, and article comprising such a device - Google Patents

Abstract

The invention relates to a device for opening / closing an article, comprising an assembly button (3) and a clasp housing (2) provided with a mechanism comprising a palastre (4), a locking member ( 60) and a latch (45); said mechanism being configured so that when said palastre is in a first position and said button is inserted into said housing, said locking member immobilizes said button at least in translation, when said palastre is rotated and passes from its first position at a second position, said member is moved until said button is released and said latch is driven in translation in said housing until said button is pushed out of said housing and immobilized said palastre and said member, when said button is reintroduced into said housing , it pushes said latch which releases said palastre, which is set in rotation and passes from its second position to its first position and said member is moved until said button is immobilized in translation.

Description

Technical field of the invention

The invention relates to a device for opening and closing an article, in particular leather goods, also more commonly called a clasp.

The invention also relates to an article, in particular of leather goods, provided with such an opening and closing device.

State of the art

There are known devices for opening and closing an article, in particular leather goods, provided with a key and a barrel allowing the locking and unlocking of the device and therefore the opening and closing of the article. , by inserting the key into the barrel and driving it in rotation. These are devices often referred to as a lock.

Devices are also known for opening and closing an article, in particular leather goods, provided rather with a housing comprising a palastre movable in rotation between a first stable position and a second position. An assembly button, also called tibi, is provided to be introduced into the housing and withdrawn from this housing when the palastro is brought into its second position. These are devices often called clasps. When the palastre is in its first stable position and the tibi introduced into the case, then the clasp is closed; while when the palastre is in its first stable position and the tibi withdrawn from the case, then the clasp is open and the insertion of the tibi into the case is not possible.

Disclosure of the invention

The invention aims to provide a device for opening and closing an article, in particular leather goods, of the clasp type, without a key or cylinder, which is particularly simple and convenient both in manufacture and in use.

• lorsque ledit palastre est dans sa première position stable et que ledit bouton d'assemblage est introduit dans ledit boîtier de fermoir, ledit au moins un organe de verrouillage immobilise ledit bouton d'assemblage au moins en translation ;
• lorsque ledit palastre est mis en rotation et passe de sa première position stable à sa deuxième position, ledit au moins un organe de verrouillage est déplacé jusqu'à libérer ledit bouton d'assemblage et ledit loquet est entraîné en translation dans ledit boîtier de fermoir jusqu'à pousser ledit bouton d'assemblage hors dudit boîtier de fermoir ;
• lorsque ledit palastre est dans sa deuxième position, ledit loquet immobilise ledit palastre et ledit au moins un organe de verrouillage ; et lorsque ledit bouton d'assemblage est réintroduit dans ledit boîtier de fermoir, ledit bouton d'assemblage pousse ledit loquet qui libère ledit palastre et ledit au moins un organe de verrouillage, ledit palastre est mis en rotation et passe de sa deuxième position à sa première position stable et ledit au moins un organe de verrouillage est déplacé jusqu'à immobiliser ledit bouton d'assemblage au moins en translation.

The subject of the invention is thus, in a first aspect, a device for opening and closing an article, in particular leather goods, comprising a clasp case and an assembly button configured to cooperate with said clasp case, which clasp case is provided with a mechanism admitting a locked configuration in which said article can be closed and an unlocked configuration in which said article can be opened, characterized in that said mechanism comprises a mounted palastre movable in rotation with respect to said clasp housing, between a first stable position and a second position, at least one locking member movably mounted in said clasp case and configured to be driven by said palastre, and a latch mounted movable in translation in said clasp housing and configured to cooperate with said palastre; said mechanism being configured such that:

• when said palastre is in its first stable position and when said assembly button is introduced into said clasp housing, said at least one locking member immobilizes said assembly button at least in translation;
• when said palastre is rotated and passes from its first stable position to its second position, said at least one locking member is moved until said assembly button is released and said latch is driven in translation in said clasp housing until pushing said assembly button out of said clasp housing;
• when said palastre is in its second position, said latch immobilizes said palastre and said at least one locking member; and when said assembly button is reintroduced into said clasp housing, said assembly button pushes said latch which releases said palastre and said at least one locking member, said palastre is rotated and passes from its second position to its first stable position and said at least one locking member is moved to immobilize said assembly button at least in translation.

The opening and closing device according to the invention is particularly convenient in that it allows the article to be opened by simple rotation of the palastre, the assembly button being automatically released from the clasp housing by the action of the latch and the mechanism thus being in the unlocked configuration.

In addition, the opening and closing device according to the invention is particularly convenient in that it allows the article to be closed by simply inserting the assembly button into the clasp case, without having to actuate the palastre.

Indeed, the translation of the latch when the palastro is driven in rotation from its first stable position towards its second position makes it possible to maintain the palastro in its second position, in which the assembly button can easily be withdrawn and / or introduced. Moreover, since the palastre drives the locking member into a position where it releases the assembly button, the latter remains in this position and the assembly button can easily be withdrawn and / or introduced.

Particularly simple, convenient and economical preferred features of the opening and closing device according to the invention are presented below.

Said palastre has a plurality of windows, said mechanism comprises a palastre plate provided with a plurality of chimneys which extend from an internal face of said palastre plate and which are received in said windows of said palastre, and said chimneys are moved in said windows when said palastre is rotated and passes from its first stable position to its second position, and vice versa.

Said mechanism comprises a first return member configured to return said palastre to its first stable position, said first return member being formed for example by a tension spring.

Said palastre comprises a complementary window, a first attachment rod as well as an internal wall at least partially circular, said palastre plate is provided with a second attachment rod which protrudes from said internal face of said palastre plate and which is received in said complementary window of said palastro, and said first return member is at least partially disposed along said internal wall of said palastro and mechanically secured, by a first end to said first attachment rod and, by a second end opposite said first end, said second tie rod.

Said palastre comprises a first attachment rod, said mechanism comprises a crown housed in said palastre, said crown is provided with an at least partially circular wall from which protrudes a second attachment rod as well as mounting lugs in which are received said chimneys of said palastre plate, and said first return member is at least partially disposed along said wall of said crown and mechanically secured, by a first end to said first attachment rod and, by a second end opposite to said first end, to said second tie rod.

Said palastre comprises a plurality of drive pins which extend from an external face of said palastre, in the direction of said internal face of said palastre plate, said mechanism comprises a plurality of blades forming said locking members, said blades are pivotally mounted on said chimneys of said palastre plate and are provided with notches in which are inserted in displacement the said drive pins of said palastre, said assembly button comprises a finger provided with a circular groove, and when said palastre is in its first stable position, said blades are at least partially housed in said groove of said finger thus locking said assembly button in said palastre, while when said palastre is in its second position, said blades are pivoted relative to said plate of palastre by the action of said drive pins of said palastre in said notches of said blades, the said blades are spaced from said groove of said finger and said assembly button can be released

Said palastre comprises a central opening opening, teeth which project into said central opening and which form said locking members, said assembly button comprises a finger provided with a circular groove and flats formed at a free end of said finger, and when said palastre is in its first stable position, said teeth of said palastre are at least partially housed in said groove of said finger and said flats of said finger are disposed substantially perpendicular to said teeth thus locking said assembly button in said palastre, while when said palastre is in its second position, said flats are substantially aligned with said teeth and said assembly button can be released.

Said assembly button comprises a flange mechanically secured to said finger at an end opposite to said circular groove.

A space is provided between said flange and said finger to interpose therein a first portion of said article, in particular of leather goods, for the securing of said assembly button on said article.

Said mechanism further comprises a cover relative to which said palastre is movable in rotation, said latch is mounted on said cover and secured in rotation with respect to the latter, said latch is provided with at least one locking member and said palastre is provided with at least one complementary locking member configured to cooperate with said at least one locking member of said latch when said palastre is in its second position, to immobilize said palastre and said at least one locking member.

Said cover is provided with a plurality of chimneys which extend from an internal face of said cover and said latch has the general shape of a plate in which are formed notches receiving said chimneys of said cover, to immobilize the latter in rotation by report to said cover.

Said latch is provided with at least one recess forming said at least one locking member and said palastre is provided with at least one stud projecting from an internal face of said palastre and forming said at least one complementary locking member.

Said mechanism is configured so that said at least one stud of said palastre abuts against an edge of said at least one recess of said latch, or is introduced into said at least one recess of said latch, when said palastre is in its second position.

Said latch is further provided with at least one shoulder forming at least one said obviously which is progressive.

Said mechanism further comprises a second return member configured to press said latch against said palastre in the absence of external stress, said second return member being formed for example by a compression spring.

Said cover is provided with a seat formed in its internal face and partially accommodating said second return member.

Said mechanism comprises a support pin having a base disposed against an internal face of said cover and a rod on which is mounted said second return member, said mechanism further comprises a sleeve provided with an internal space into which said second member is introduced. return mounted on said support pin, and also provided with an external flange, and said latch is provided with an orifice and is slidably mounted on said sleeve, with said outer flange of said sleeve which bears against one face of said latch in look at said internal face of said cover.

Said palastro is mounted so as to be able to rotate between a palastro plate and a cover, which are mechanically secured to one another, for example using fixing screws.

Said mechanism comprises a palastre plate relative to which said palastre is movable in rotation, said palastre plate is provided with a wall at least partially circular, and said clasp housing further comprises a backplate mechanically secured with said plate palastre and disposed against said wall so as to leave a space between said palastre plate and said backplate, to interpose therein a second portion of said article, in particular of leather goods, for securing said clasp case on said article.

The invention also relates, in a second aspect, to an article, in particular of leather goods comprising an opening and closing device as described above, a first portion on which is fixed an assembly button of said device. opening and closing, and a second portion to which is fixed a clasp housing of said opening and closing device, said opening and closing device being configured to receive and immobilize said assembly button in said housing. clasp in a locked configuration of a mechanism of said opening and closing device, and for releasing said assembly button from said clasp housing in an unlocked configuration of said mechanism.

Brief description of the figures

• La figure 1 représente schématiquement en perspective un dispositif d'ouverture et de fermeture conforme à l'invention, ayant un boîtier de fermoir fixé sur une première partie d'un article de maroquinerie, montrée seulement partiellement, et un bouton d'assemblage fixé sur une seconde partie dudit article de maroquinerie, montrée aussi seulement partiellement, dans une configuration déverrouillée où le bouton d'assemblage est libéré et à distance du boîtier de fermoir.
• La figure est une vue similaire à celle de la figure 1, montrant le dispositif d'ouverture et de fermeture dans une configuration verrouillée où le bouton d'assemblage est inséré dans le boîtier de fermoir.
• La figure 3 représente schématiquement en perspective éclatée le dispositif d'ouverture et de fermeture des figures 1 et 2.
• La figure 4 représente schématiquement en perspective éclatée le dispositif d'ouverture et de fermeture des figures 1 et 2.
• La figure 5 représente schématiquement en perspective un loquet du dispositif d'ouverture et de fermeture.
• La figure 6 représente schématiquement en perspective éclatée un palastre du dispositif d'ouverture et de fermeture.
• La figure 7 représente schématiquement en vue de face le palastre du dispositif d'ouverture et de fermeture.
• La figure 8 représente schématiquement en vue de face une lame du dispositif d'ouverture et de fermeture.
• La figure 9 représente schématiquement en vue de côté une plaque de palastre du dispositif d'ouverture et de fermeture.
• La figure 10 est une vue de face du dispositif d'ouverture et de fermeture, dans la configuration verrouillée et avec un couvercle du boitier de fermoir qui a été retiré.
• La figure 10A est une vue en coupe repérée A-A sur la figure 10.
• La figure 10B est une vue en coupe repérée B-B sur la figure 10A.
• La figure 11 est une vue similaire à celle de la figure 10, montrant le passage de la configuration verrouillée du dispositif d'ouverture et de fermeture à sa configuration déverrouillée.
• La figure 11A est une vue similaire à celle de la figure 10A, montrant le passage de la configuration verrouillée du dispositif d'ouverture et de fermeture à sa configuration déverrouillée.
• La figure 11B est une vue similaire à celle de la figure 10B, montrant le passage de la configuration verrouillée du dispositif d'ouverture et de fermeture à sa configuration déverrouillée.
• La figure 12 est une vue similaire à celle de la figure 11, montrant le dispositif d'ouverture et de fermeture dans sa configuration déverrouillée.
• La figure 12A est une vue similaire à celle de la figure 11A, montrant le dispositif d'ouverture et de fermeture dans sa configuration déverrouillée.
• La figure 12B est une vue similaire à celle de la figure 11B, montrant le dispositif d'ouverture et de fermeture dans sa configuration déverrouillée.
• La figure 13 est une vue similaire à celle de la figure 12, montrant le passage de la configuration déverrouillée du dispositif d'ouverture et de fermeture à sa configuration verrouillée.
• La figure 13A est une vue similaire à celle de la figure 12A, montrant le passage de la configuration déverrouillée du dispositif d'ouverture et de fermeture à sa configuration verrouillée.
• La figure 13B est une vue similaire à celle de la figure 12B, montrant le passage de la configuration déverrouillée du dispositif d'ouverture et de fermeture à sa configuration verrouillée.
• La figure 14 montre en perspective une variante du dispositif d'ouverture et de fermeture, dans une configuration déverrouillée.
• La figure 15 montre en perspective une variante du dispositif d'ouverture et de fermeture, dans une configuration verrouillée.
• La figure 16 est une vue en perspective éclatée similaire à celles de la figure 3, pour la variante du dispositif d'ouverture et de fermeture.
• La figure 17 est une vue en perspective éclatée similaire à celles de la figure 4, pour la variante du dispositif d'ouverture et de fermeture.
• La figure 18 est une vue similaire à celle de la figure 10, montrant la variante du dispositif d'ouverture et de fermeture dans sa configuration verrouillée.
• La figure 18A est une vue similaire à celle de la figure 10A, montrant la variante du dispositif d'ouverture et de fermeture dans sa configuration verrouillée.
• La figure 18B est une vue similaire à celle de la figure 10B, montrant la variante du dispositif d'ouverture et de fermeture dans sa configuration verrouillée.
• La figure 19 est une vue similaire à celle de la figure 11, montrant le passage de la configuration verrouillée de la variante du dispositif d'ouverture et de fermeture à sa configuration déverrouillée.
• La figure 19A est une vue similaire à celle de la figure 11A, montrant le passage de la configuration verrouillée de la variante du dispositif d'ouverture et de fermeture à sa configuration déverrouillée.
• La figure 19B est une vue similaire à celle de la figure 11B, montrant le passage de la configuration verrouillée de la variante du dispositif d'ouverture et de fermeture à sa configuration déverrouillée.
• La figure 20 est une vue similaire à celle de la figure 12, montrant la variante du dispositif d'ouverture et de fermeture dans sa configuration déverrouillée.
• La figure 20A est une vue similaire à celle de la figure 12A, montrant la variante du dispositif d'ouverture et de fermeture dans sa configuration déverrouillée.
• La figure 20B est une vue similaire à celle de la figure 12B, montrant la variante du dispositif d'ouverture et de fermeture dans sa configuration déverrouillée.

The description of the invention will now be continued with the description of exemplary embodiments, given below by way of illustration and not by way of limitation, with reference to the accompanying drawings.

• The figure 1 schematically shows in perspective an opening and closing device according to the invention, having a clasp case fixed to a first part of a leather goods article, shown only partially, and an assembly button fixed to a second part of said article of leather goods, also shown only partially, in an unlocked configuration where the assembly button is released and away from the clasp case.
• The figure is a view similar to that of the figure 1 , showing the opening and closing device in a locked configuration where the assembly button is inserted into the clasp housing.
• The figure 3 schematically shows in exploded perspective the device for opening and closing the figures 1 and 2 .
• The figure 4 schematically shows in exploded perspective the device for opening and closing the figures 1 and 2 .
• The figure 5 schematically shows in perspective a latch of the opening and closing device.
• The figure 6 schematically shows in exploded perspective a palastre of the opening and closing device.
• The figure 7 schematically shows a front view of the palastre of the opening and closing device.
• The figure 8 schematically shows a front view of a blade of the opening and closing device.
• The figure 9 schematically shows a side view of a palastre plate of the opening and closing device.
• The figure 10 is a front view of the opening and closing device, in the locked configuration and with a cover of the clasp case which has been removed.
• The figure 10A is a sectional view marked AA on the figure 10 .
• The figure 10B is a sectional view marked BB on the figure 10A .
• The figure 11 is a view similar to that of the figure 10 , showing the passage from the locked configuration of the opening and closing device to its unlocked configuration.
• The figure 11A is a view similar to that of the figure 10A , showing the passage from the locked configuration of the opening and closing device to its unlocked configuration.
• The figure 11B is a view similar to that of the figure 10B , showing the passage from the locked configuration of the opening and closing device to its unlocked configuration.
• The figure 12 is a view similar to that of the figure 11 , showing the opening and closing device in its unlocked configuration.
• The figure 12A is a view similar to that of the figure 11A , showing the opening and closing device in its unlocked configuration.
• The figure 12B is a view similar to that of the figure 11B , showing the opening and closing device in its unlocked configuration.
• The figure 13 is a view similar to that of the figure 12 , showing the passage from the unlocked configuration of the opening and closing device to its locked configuration.
• The figure 13A is a view similar to that of the figure 12A , showing the passage from the unlocked configuration of the opening and closing device to its locked configuration.
• The figure 13B is a view similar to that of the figure 12B , showing the passage from the unlocked configuration of the opening and closing device to its locked configuration.
• The figure 14 shows in perspective a variant of the opening and closing device, in an unlocked configuration.
• The figure 15 shows in perspective a variant of the opening and closing device, in a locked configuration.
• The figure 16 is an exploded perspective view similar to those of the figure 3 , for the variant of the opening and closing device.
• The figure 17 is an exploded perspective view similar to those of the figure 4 , for the variant of the opening and closing device.
• The figure 18 is a view similar to that of the figure 10 , showing the variant of the opening and closing device in its locked configuration.
• The figure 18A is a view similar to that of the figure 10A , showing the variant of the opening and closing device in its locked configuration.
• The figure 18B is a view similar to that of the figure 10B , showing the variant of the opening and closing device in its locked configuration.
• The figure 19 is a view similar to that of the figure 11 , showing the passage from the locked configuration of the variant of the opening and closing device to its unlocked configuration.
• The figure 19A is a view similar to that of the figure 11A , showing the passage from the locked configuration of the variant of the opening and closing device to its unlocked configuration.
• The figure 19B is a view similar to that of the figure 11B , showing the passage from the locked configuration of the variant of the opening and closing device to its unlocked configuration.
• The figure 20 is a view similar to that of the figure 12 , showing the variant of the opening and closing device in its unlocked configuration.
• The figure 20A is a view similar to that of the figure 12A , showing the variant of the opening and closing device in its unlocked configuration.
• The figure 20B is a view similar to that of the figure 12B , showing the variant of the opening and closing device in its unlocked configuration.

detailed description

The figures 1 and 2 illustrate an opening and closing device 1, also called a clasp, of a leather article (not shown).

The leather goods article may for example comprise a first portion, or body, to which a second portion of the article, or flap, can be attached by a first end (not shown).

The opening and closing device 1, hereinafter clasp, comprises a clasp case 2 and an assembly button 3 configured to cooperate with the clasp case 2.

For example, assembly button 3 may be secured to the first portion, or body, of the item, while the clasp housing 2 may be secured to the second portion, or flap, of the item.

The clasp housing 2 is provided with a mechanism allowing a locked configuration in which the article can be closed and an unlocked configuration in which the article can be opened.

The unlocked configuration of the clasp case mechanism 2 can be seen on the figure 1 , where the assembly button 3 is remote from the clasp case 2, while the locked configuration of the mechanism of the clasp case 2 is visible on the figure 2 , where the assembly button 3 is not visible because it is partially inserted into the clasp case 2.

In particular, the mechanism of the clasp case 2 comprises a palastre 4 mounted movable in rotation with respect to the clasp case 2, between a first stable position in which the mechanism is in the locked configuration ( figure 2 ), and a second position ( figure 1 ) in which the mechanism is in the unlocked configuration.

The palastre 4 is movably mounted between a cover 5 of the mechanism, located on a first side 6 of the clasp housing 2, and a palastre plate 7 of the mechanism, located on a second side 9 of the clasp housing 2, opposite to the first side 6.

The palastre 4 is interposed between the cover 5 and the palastre plate 7 and is movable in rotation with respect to the latter, between its first stable position and its second position.

The clasp housing 2 can be provided with a backplate 8 located on the second side 9 and mechanically secured to the palastric plate 7, while leaving a space 10 between the palastro plate 7 and the counterplate 8, for example to interpose therein the second portion, or flap, of the article, for the securing of the clasp case 2 on this article.

The assembly button 3 comprises a finger 11 and a flange 12 mechanically secured to the finger 11, while leaving a space 13 between the flange 12 and the finger 11, for example to interpose therein the first portion, or body, of the item, for securing assembly button 3 to this item.

The assembly button 3 is provided with a circular groove 14 formed near a free end 15 of the finger 11, opposite the flange 12. In other words, the flange 12 is mechanically secured to the finger 11. at an end opposite to the circular groove 14.

The opening and closing device 1 is here configured so that the assembly button 3 is introduced into and withdrawn from the clasp housing 2 by the second side 9 of the latter, that is to say from the side of the palastre plate 7 and the counterplate 8, opposite the cover 5.

The clasp housing 2 and the assembly button 3 will now be described in more detail with reference to figures 2 to 9 .

The palastre 4 of the clasp housing 2 has substantially the shape of a rim and has a cylindrical outer wall 16 and a main wall 17 extending inside the cylindrical outer wall 16.

The palastre 4 has a central opening opening 18 made in the main wall 17.

The palastre 4 comprises a plurality of windows 19 formed in the main wall 17 around the central opening 18.

The central opening 18 of the palastre allows the passage of the finger 11 of the assembly button 3.

The palastre 4 comprises a complementary window 20 formed in the main wall 17 and situated substantially between a window 19 and the cylindrical outer wall 16.

The palastre 4 comprises an internal wall at least partially circular 21 which extends from an internal face 22 of the main wall 17.

The internal wall 21 extends here substantially concentrically and at a distance from the cylindrical external wall 16, around the windows 19.

The complementary window 20 is thus located between the internal wall 21 and the cylindrical external wall 16.

A hole 23 is made in the internal wall 21 and the palastre 4 comprises a first attachment rod 24 located opposite the hole 23.

The first attachment rod 24 extends from the internal face 22 of the main wall 17, near the cylindrical external wall 16.

The first attachment rod 24 can also be located near the complementary window 20.

The palastre 4 here comprises a plurality of so-called complementary locking members 25 formed here in the main wall 17.

In the example described, the complementary locking members of the palastre 4 are formed by studs 25 projecting from the internal face 22 of the main wall 17.

Each stud 25 can be located between two successive windows 19 and be connected to the partially circular internal wall 21.

The palastre 4 also has a first shoulder 26 formed in the cylindrical outer wall 16, on the side of the inner face 22 of the main wall 17 and on the first side 6 of the clasp housing 2, and intended to form a seat for the cover 5.

The palastre also comprises one or more drive pins 27 which extend from an outer face 28 of the main wall 17.

In the example described, each drive pin 27 can be located between two successive windows 19 and thus be located substantially opposite the studs 2, that is to say on the other side of the main wall 17 .

The palastre 4 also has a second shoulder 29 formed in the cylindrical outer wall 16, on the side of the outer face 28 of the main wall 17 and on the second side 9 of the clasp housing 2, and intended to form a seat for the plate. palace 7.

The cover 5 of the clasp case 2 has an internal face 30 from which protrude several first chimneys 31, as well as a seat 32 formed in its internal face 30.

The first chimneys 31 of the cover 5 here have threaded holes and can be regularly distributed around the seat 32.

The palastre plate 7 of the clasp housing 2 has an internal face 33 from which protrude several second chimneys 34 which are configured to be received in the windows 19 of the palastre 4.

Palastre plate 7 has a central opening 35 around which the second chimneys 34 can be regularly distributed.

The central opening 35 of the palastre plate 7 allows the passage of the finger 11 of the assembly button 3.

The second chimneys 34 of the palastre plate 7 here have threaded holes which open into an external face 37 of the palastro plate 7 which is opposite the internal face 33, at the level of the first orifices 40.

Palastre plate 7 comprises a second attachment rod 36 which protrudes from internal face 33 of palastre plate and which is located for example here near the periphery of palastre plate 7.

The second attachment rod 36 is configured to be received in the complementary window 20 of the palastre 4.

Palastre plate 7 further comprises an at least partially circular wall 39 which protrudes from the external face 37 of palastre plate 7. Wall 39 extends for example here around central opening 35.

The palastre plate 7 further comprises third chimneys 38 which project from the external face 37 and which may for example be regularly distributed around the wall 39.

The third chimneys 38 of the palastre plate 7 here have threaded holes which open into the internal face 33.

It will be noted that the first orifices 40 are for example here regularly distributed around the wall 39 and between the third chimneys 38.

The backplate 8 is configured to be mechanically secured with the palastre plate 7 and has an internal face 41 designed to be placed against the wall 39 so as to provide the space 10 between the palastro plate 7 and the backplate. 8.

The backplate 8 has a central opening 42 opening out on either side of the internal face 41 and from an external face 43 opposite the internal face 41 of the backplate 8.

The central opening 42 of the counter-plate 8 allows the passage of the finger 11 of the assembly button 3.

The back plate 8 has second orifices 44 opening out on either side of the inner and outer faces 41 and 43 of the back plate 8.

These second orifices 44 of the back plate 8 are for example here regularly distributed around the central opening 42 of this back plate 8.

The mechanism is provided with a latch 45 mounted movable in translation in the clasp housing 2 and configured to cooperate with the palastre 4.

The latch 45 has the general shape of a plate in which there are notches 46 configured to receive the first chimneys 31 of the cover, so as to immobilize the latch 45 in rotation relative to the cover 5.

The notches 46 have for example here a substantially round bottom to accommodate a respective section of the first respective chimneys 31.

The latch 45 is thus mounted on the cover 5 and secured in rotation with respect to the latter.

The latch 45 is provided with one or more locking members, here formed by recesses 47, and configured to cooperate with the studs 25 of the palastre 4 when the latter is in its second position.

The latch 45 is further provided with shoulders 48 formed in the plate forming the latch 45, so as to form recesses 47 which are progressive.

In particular, the mechanism of the clasp case 2 is here configured so that the studs 25 of the palastre 4 come into abutment against the edges of the respective recesses 47 of the latch 45.

This makes it possible to gradually block the palastre 4 in its first stable position.

The mechanism of the clasp case 2 is also provided with one or more locking members 60 movably mounted in the clasp case 2 and configured to be driven by the palastre 4.

These locking members are formed by blades 60 which have substantially the shape of hooks, and which are each provided with a third orifice 61 for the pivoting mounting of each of the blades 60 on the second chimneys 34 of the palastre plate 7.

The blades 60 are each provided with a notch 62, having an elongated shape and in which is configured to be to receive in displacement a respective drive pin 27 of the palastre 4.

The blades 60 also each have an outline having a section 63 which is curved and intended to be housed at least partially in the groove 14 of the finger 11 of the assembly button 3 when the palastre 4 is in its first stable position.

The mechanism of the clasp housing 2 is furthermore provided with a first return member 64, formed for example here by a tension spring, and with a second return member 65, formed for example here by a compression spring.

The first return member 64 has a substantially semi-circular shape and is provided with attachment points 66 at the first and second opposite ends of this first return member 64.

The first return member 64 is housed in the palastre 4, between the cylindrical outer wall 16 and the semi-circular internal wall 21, and is mechanically secured to both the first attachment rod 24 of the palastre 4 by one attachment points of the first return member 64 and to the second attachment rod 36 of the palastre plate 7 by the other of the attachment points of the first return member 64.

The second return member 65 is configured to press the latch 45 against the palastre 4 in the absence of external stress.

In particular, the second return member 65 is partially housed in the seat 32 provided in the cover 5 and bears against an external face 49 of the latch 45.

The mechanism of the clasp case 2 also comprises first fixing screws 67 which make it possible to mechanically secure the palastre plate 7 to the cover 5, passing through the first orifices 40, the second chimneys 34 of the palastre plate 7 and the ears. 85 of the crown 81, and by being inserted into the first chimneys 31 of the cover 5 which are located directly opposite the second chimneys 34 of the palastre plate 7 and the ears 85 of the crown 81.

The palastre 4 is thus interposed between the palastre plate 7 and the cover 5 while being movable in rotation between the latter.

The mechanism of the clasp case 2 comprises second fixing screws 68 which make it possible to mechanically secure the back plate 8 to the palastre plate 7, by passing through the second holes 44 of the back plate 8 and coming in. in the third chimneys 38 of the palastre plate 7.

A third fixing screw 69 is also provided to mechanically secure the flange 12 of the assembly button 3 to its finger 11.

We will now describe the operation of the opening and closing device 1 and the cooperation of the parts that it comprises, with reference to figures 10, 10A , 10B to 13 , 13A, 13B .

The figures 10, 10A and 10B show the opening and closing device 1 when the mechanism is in its locked configuration.

In this locked configuration of the mechanism, the palastre 4 is in its first stable position, the assembly button 3 is introduced into the clasp housing 2, and the blades 60 immobilize the finger 11 of the assembly button 3 at least in translation. .

In particular, the first return member 64 is not stressed and has its attachment points 66 mechanically secured respectively to the first attachment rod 24 of palastre 4 and to the second attachment rod 36 of palastre plate 7, this second attachment rod 36 being introduced into the complementary window 20 of palastre 4.

In the first stable position of the palastre 4, the second attachment rod 36 is located here at a first end of the complementary window 20.

The second return member 65 is compressed between the cover 5 and the external face 49 of the latch 45 and the latter rests, by an internal face 50 opposite its external face 49, on the studs 25 of the palastre 4.

The latch 45 is also immobilized in rotation by the first chimneys 31 of the cover 5 which are located in the notches 46 of the latch 45.

The blades 60 are pivotally mounted on the palastre plate 7 by virtue of the second chimneys 34 of the palastre plate 7 which are introduced into the third orifices 61 of the blades 60.

The drive pins 27 of the palastre 4 are received in the notches 62 of the blades 60, and are located at a first end of the notches 62, so that the blades 60 are in a configuration where they are most tightened to each other .

Thus, the blades 60 are at least partially housed in the groove 14 of the finger 11, with the sections 63 of the contours of the blades 60 which thus lock the assembly button 3 in the palastre 4.

The figures 11, 11A and 11B show the opening and closing device 1 when the mechanism changes from its locked configuration to its unlocked configuration.

The palastre 4 is driven in rotation from its first stable position to its second position.

The first return member 64 is tensioned by the movement of the first attachment rod 24 of the palastre 4 vis-à-vis the second attachment rod 36 which remains fixed.

The complementary window 20 of the palastre 4 is also moved so that the second attachment rod 36 is found substantially in the center of this complementary window 20.

The studs 25 of the palastre 4 are also moved relative to the latch 45.

These studs 25 slide against the internal face 50 of the latch 45 until they are found facing the recesses 47 formed in the latch 45.

The latch 45 is then driven in translation in the clasp housing 2 by the action of the second return member 65 which relaxes.

In addition, the movement of the palastre 4 causes the movement of its drive pins 27, which themselves move in the notches 62 of the blades 60, thus moving the blades 60 away from each other by pivoting.

The drive pins 27 of the palastre 4 are found substantially in the center of the notches 62 of the blades 60, the blades 60 withdraw from the groove 14 of the finger 11 and the sections 63 of the contours of the blades 60 unlock the assembly button 3.

The action of the second return member 65 on the latch 45 causes the latter to push the finger 11 of the assembly button 3 out of the clasp housing 2.

The figures 12, 12A and 12B show the opening and closing device 1 when the mechanism is in its unlocked configuration and the palastre 4 has been turned to the maximum.

In this unlocked configuration of the mechanism, it can be seen that the palastre 4 can still be rotated, always moving away from its first stable position, even after removing the assembly button 3.

The first return member 64 is further tensioned by the movement of the first attachment rod 24 of the palastre 4 vis-à-vis the second attachment rod 36 which remains fixed.

The complementary window of the palastre 4 is further moved so that the second fastening rod 36 is found substantially at an opposite end of this complementary window.

The studs 25 of the palastre 4 are also moved relative to the latch 45.

These pads 25 move along the recesses 47 of the latch 45 and move closer to the notches 46.

In addition, the movement of the palastre 4 further drives the movement of its drive pins 27, which themselves move in the notches 62 of the blades 60 until they reach an opposite end of the latter, thus further spreading by pivoting the blades 60 from each other.

The figures 13, 13A and 13B show the opening and closing device 1 when the mechanism changes from its unlocked configuration to its locked configuration.

The palastre 4 has been partially recalled by the first return member 64 to its first stable position.

The first attachment rod 24 of the palastre 4 has been moved vis-à-vis the second attachment rod 36 which remains fixed, the complementary window 20 of the palastre 4 has also been moved so that the second attachment rod 36 is found substantially between the opposite end and the center of this complementary window 20.

The pads 25 of the palastre 4 have also been moved relative to the latch 45 until it comes into abutment against the edges of the recesses 47 of the latch 45.

In addition, the return of the palastre 4 causes the movement of its drive pins 27, which themselves move in the notches 62 of the blades 60 until they are between the opposite end and the center of the latter. The blades 60 pivot and move slightly closer to each other.

It is therefore the cooperation of the studs 25 of the palastre with the edges of the recesses of the latch 45 which makes it possible to immobilize the palastre 4 and prevent its return to its first stable position, and which also makes it possible to immobilize the blades 60 and prevent qu 'they don't tighten too much.

The finger 11 of the assembly button 3 is then reintroduced into the clasp housing 2.

The free end 15 of the finger 11 bears against the internal face 50 of the latch 45 and pushes the latter against the second return member 65, which compresses.

The latch 45 is then driven in rotation in the direction of the cover 5. The latch 45 thus moves away from the palastre 4 until the cooperation between the studs 25 of the palastre 4 and the edges of the recesses 47 of the latch 45 is interrupted.

This interruption can be done in two stages thanks to the shoulders 48 formed at the level of the recesses 47.

This ensures that the finger 11 of the assembly button 3 is sufficiently reintroduced into the clasp housing 2

The latch 45 therefore releases the palastre 4, which is returned to its first stable position by the action of the first return member 64, thus bringing the blades 60 together until they enter the groove 14 of the finger 11 and thus lock the assembly button 3 in the clasp housing 2. We then find ourselves in the configuration of 10, 10A and 10B.

The opening and closing device 1 is particularly convenient in that it makes it possible to open the article by simply rotating the palastre 4, the assembly button 3 being automatically released from the clasp housing 2 by the action of the latch 45 and the mechanism thus being in the unlocked configuration.

In addition, the opening and closing device 1 is particularly convenient in that it makes it possible to close the article by simply inserting the assembly button 3 into the clasp housing 2, without having to actuate the palastre 4.

Indeed, the translation of the latch 45 when the palastre 4 is rotated from its first stable position to its second position makes it possible to maintain the palastre 4 in its second position, in which the assembly button 3 can easily be withdrawn and / or introduced. In addition, since the palastre 4 drives the blades 60 in a position where they release the button assembly 3, the latter remains in this position and it can easily be removed and / or inserted.

The figures 14 to 21B illustrate an alternative embodiment of the opening and closing device described above. The same reference numbers have been used for similar elements.

The opening and closing device shown on figures 14 to 21B structurally differs from that shown on the figures 1 to 13B essentially in that the finger of the assembly button has a different shape, in that this finger is blocked directly by the palastre, in that the second attachment rod comes from a part inserted in the palastre, and in this that the second return member is mounted on a pin itself inserted into a sleeve, between the latch and the cover.

In particular, the figures 14 and 15 are similar to figures 1 and 2 and illustrate the opening and closing device 1, which comprises the clasp housing 2 provided with the mechanism admitting a locked configuration in which the article can be closed and an unlocked configuration in which the article can be opened, and the button assembly 3 configured to cooperate with the clasp housing 2.

The mechanism of the clasp housing 2 comprises the palastre 4 mounted to be movable in rotation with respect to the clasp housing 2, between the first stable position in which the mechanism is in the locked configuration ( figure 15 ), and a second position ( figure 14 ) in which the mechanism is in the unlocked configuration. The palastre 4 is movably mounted between the cover 5 of the mechanism, located on the first side 6 of the clasp housing 2, and the palastre plate 7 of the mechanism, located on the second side 9 of the clasp housing 2, opposite the first side 6, and it is interposed between the cover 5 and the palastre plate 7 and is movable in rotation relative to the latter, between its first stable position and its second position. The clasp housing 2 can be provided with the counterplate 8 located on the second side 9 and mechanically secured to the palastro plate 7, while leaving a space 10 between the counterplate 8 and the palastro plate 7.

The assembly button 3 comprises a finger 11 and a flange 12 mechanically secured to the finger 11, while leaving a space 13 between the flange 12 and the finger 11. The assembly button 3 is provided with a circular groove 14 formed. near a free end 15 of the finger 11, opposite the flange 12. In other words, the flange 12 is mechanically secured to the finger 11 at an end opposite to the circular groove 14. The assembly button 3 also has flats 80 formed at this free end 15, beyond the groove 14, as well as a hole 91 opening at its free end 15. The groove 14 is thus located between the flange 12 and flats 80.

The clasp housing 2 and the assembly button 3 will now be described in more detail with reference to figures 16 and 17 .

The palastre 4 has a cylindrical outer wall 16 and a main wall 17 extending inside the cylindrical outer wall 16. The palastre 4 has a central opening 18 provided in the main wall 17. The palastre 4 comprises a plurality windows 19 formed in the main wall 17 around the central opening 18. The central opening 18 of the palastre allows the passage of the finger 11 of the assembly button 3. The palastre 4 comprises a first fastening rod 24 which s 'extends from an internal face 22 of the main wall 17, close to the cylindrical external wall 16. The palastre 4 here comprises a plurality of so-called complementary locking members 25 formed here in the main wall 17. In the example described. , the complementary locking members of the palastre 4 are formed by studs 25 projecting from the internal face 22 of the main wall 17. Each stud 25 can be located between two successive windows 19 and be connected to the partially circular internal wall 21. The palastre 4 is also provided with teeth 82 projecting into the central opening 18. These teeth 82 are here arranged opposite one another.

The mechanism comprises a crown 81 housed in the palastre 4, formed mainly of an at least partially circular wall which is provided with a hole 83 at the level of which is formed a second fastening rod 84 as well as mounting ears 85 The crown 81 is placed against the internal face 22 of the main wall 17 of the palastre 4 and extends here substantially concentrically and at a distance from the cylindrical outer wall 16, around the windows 19 of the palastre 4.

The cover 5 has an internal face 30 from which protrude several first chimneys 31 which are connected by a side wall 86 forming a rim. The first chimneys 31 of the cover 5 here have threaded holes and can be regularly distributed along the side wall 86.

The palastre plate 7 has an internal face 33 from which protrude several second chimneys 34 which are configured to be received in the windows 19 of the palastre 4. The palastre plate 7 has a central opening 35 around which the palaster plates can be regularly distributed. second chimneys 34. The central opening 35 of the palastre plate 7 allows the passage of the finger 11 of the assembly button 3. The second chimneys 34 of the palastre plate 7 have here threaded holes which open into an external face 37 of the palastre plate 7 which is opposite the internal face 33, at the level of the first orifices 40. The palastre plate 7 further comprises a wall 39 at least partially circular which protrudes from the external face 37 of the palastre plate 7 The wall 39 extends for example here around the central opening 35. The palastre plate 7 further comprises third chimneys 38 which project from the external face 37 and q ui can for example be regularly distributed around the wall 39. The third chimneys 38 of the palastre plate 7 here have threaded holes which open into the internal face 33. It will be noted that the first orifices 40 are for example here regularly distributed around the wall 39 and between the third chimneys 38.

The backplate 8 is configured to be mechanically secured with the palastre plate 7 and has an internal face 41 designed to be placed against the wall 39 so as to provide the space 10 between the palastro plate 7 and the backplate. 8. The backing plate 8 has a central opening 42 opening out on either side of the internal face 41 and from an external face 43 opposite the internal face 41 of the backing plate 8. The central opening 42 of the back plate 8 allows the passage of the finger 11 of the assembly button 3. The back plate 8 has second openings 44 opening out on either side of the internal and external faces 41 and 43 of the back plate 8. These second openings 44 of the back plate 8 are for example here regularly distributed around the central opening 42 of this back plate 8.

The mechanism is provided with a latch 45 mounted movably in translation in the clasp housing 2 and configured to cooperate with the palastre 4. The latch 45 has the general shape of a plate in which are formed notches 46 configured to receive the latch. first stacks 31 of the cover, so as to immobilize the latch 45 in rotation relative to the cover 5. The notches 46 have for example here a substantially round bottom to accommodate a respective section of the respective first stacks 31. The latch 45 is thus mounted on the cover 5 and secured in rotation with respect to the latter. The latch 45 is provided with one or more locking members, here formed by recesses 47, or holes, and configured to cooperate with the studs 25 of the palastre 4 when the latter is in its second position. The latch 45 is further provided with shoulders 48 formed in the plate forming the latch 45, so as to form recesses 47 which are progressive. In particular, the mechanism of the clasp housing 2 is here configured so that the studs 25 of the palastre 4 are introduced into the respective recesses 47 of the latch 45. This makes it possible to progressively block the palastre 4 in its first stable position. The latch 45 is here also provided with a central opening 87.

The mechanism is also provided with a first return member 64, formed for example here by a tension spring. The first return member 64 has a substantially semi-circular shape and is provided with attachment points 66 at the first and second opposite ends of this first return member 64. The first return member 64 is housed in the palastre 4, between the cylindrical outer wall 16 and the wall of the crown 81, and is mechanically secured both to the first attachment rod 24 of the palastre 4 by one of the attachment points of the first return member 64 and to the second attachment rod 84 of the crown 81 by the other of the attachment points of the first return member 64.

The mechanism is further provided with a second return member 65, formed for example here by a compression spring, with a support pin 88 having a base disposed against an internal face 30 of the cover 5 and a rod on which is mounted the second return member 65, and a sleeve 89 provided with an internal space into which can be introduced the second return member 65 mounted on the support pin 88 and provided with an external flange 90 at one end of the sleeve 89 The latch 45 is configured to be slidably mounted on the sleeve 89 through its central opening 87, with the outer flange 90 which bears against an outer face 49 of the latch 45 opposite the inner face 30 of the cover 5. The second return member 65 is configured to press the latch 45 against the palastre 4 in the absence of external stress.

The mechanism also includes first fixing screws 67 which make it possible to mechanically secure the palastre plate 7 to the cover 5, by passing through the first orifices 40 and the second chimneys 34 of the palastre plate 7 and by fitting into the first chimneys 31 of the cover 5 which are located directly opposite the second chimneys 34 of the palastre plate 7. The palastre 4 is thus interposed between the palastre plate 7 and the cover 5 while being movable in rotation between the latter. The mechanism also includes second fixing screws 68 which make it possible to mechanically secure the back plate 8 to the palastre plate 7, by passing through the second holes 44 of the back plate 8 and inserting itself into the third chimneys. 38 of the palastre plate 7. A third fixing screw 69 is also provided to mechanically secure the flange 12 of the assembly button 3 to its finger 11.

We will now describe the operation of the variant of the opening and closing device 1 and the cooperation of the parts that it comprises, with reference to figures 18, 18A , 18B to 20 , 20A, 20B .

The figures 18, 18A and 18B show the opening and closing device 1 when the mechanism is in its locked configuration. In this locked configuration of the mechanism, the palastre 4 is in its first stable position, the assembly button 3 is introduced into the clasp housing 2, with the teeth 82 of the palastre 4 which are at least partially housed in the groove 14 of the finger 11 and the flats 80 of the finger 11 which are arranged substantially perpendicular to the teeth 82 of the palastre 4, thus locking the assembly button 3 in the palastre 4. The first return member 64 is not stressed and has its points of. fastener 66 mechanically secured respectively to the first fastening rod 24 of the palastre 4 and to the second fastening rod 84 of the crown 81. The second return member 65 is compressed between the base of the support pin 88 and the bottom of the sleeve 89, which is partially introduced into the hole 91 made in the finger 11 of the assembly button 3, and the latch 45 rests, by an internal face 50 opposite its external face 49, on the studs 25 of the palastre 4. The latch 45 is out re immobilized in rotation by the first chimneys 31 of the cover 5 which are located in the notches 46 of the latch 45.
The figures 19, 19A and 19B show the opening and closing device 1 when the mechanism changes from its locked configuration to its unlocked configuration. The palastre 4 is driven in rotation from its first stable position to its second position. The first return member 64 is tensioned by the movement of the first attachment rod 24 of the palastre 4 vis-à-vis the second attachment rod 84 which remains fixed. The pads 25 of the palastre 4 are themselves also moved relative to the latch 45. These pads 25 slide against the internal face 50 of the latch 45 until they are facing the recesses 47 formed in the latch 45. The latch 45 is then driven. in translation in the clasp housing 2 by the action of the second return member 65 which relaxes. In particular, the latch 45 is driven by the collar 90 of the sleeve 89. In addition, the movement of the palastre 4 causes the movement of the teeth 82 relative to the flats 80 of the finger 11 of the assembly button 3. The flats 80 are then substantially aligned with the teeth 82 and the assembly button 3 can be released. The action of the second return member 65 on the latch 45 causes the latter to push the finger 11 of the assembly button 3 out of the clasp housing 2.

The figures 20, 20A and 20B show the opening and closing device 1 when the mechanism changes from its unlocked configuration to its locked configuration. The finger 11 of the assembly button 3 is reintroduced into the clasp housing 2. The free end 15 of the finger 11 bears against the internal face 50 of the latch 45 and pushes the latter against the second return member. 65, which compresses in the sleeve 89. The latch 45 is then driven in translation in the direction of the cover 5. The latch 45 thus moves away from the palastre 4 until the studs 25 of the palastre 4 come out of the recesses 47 of the latch. 45. This withdrawal therefore frees the palastre 4, which is returned to its first stable position by the action of the first return member 64, placing the teeth 82 of the palastre 4 in a position substantially perpendicular to the flats 80 of the finger 11 of the button d 'assembly 3, so as to lock the assembly button 3 in the clasp housing 2. We then find ourselves in the configuration of 19, 19A and 19B.

The variant of the opening and closing device 1 is also particularly convenient in that it allows the article to be opened by simply rotating the palastre 4, the assembly button 3 being automatically released from the clasp housing 2 by the action of the latch 45 and the mechanism thus being in the unlocked configuration. In addition, the variant of the opening and closing device 1 is particularly convenient in that it allows the article to be closed by simply inserting the assembly button 3 into the clasp housing 2, without having to actuate the palastre. 4. Indeed, the translation of the latch 45 when the palastre 4 is driven in rotation from its first stable position to its second position makes it possible to maintain the palastre 4 in its second position, in which the assembly button 3 can easily be withdrawn. and / or introduced. In addition, since the palastre 4 directly drives the teeth 82 that it comprises into a position where they release the assembly button 3, the latter remains in this position and it can easily be withdrawn and / or introduced.

Variants not shown are presented below.

The shapes of the locking members and complementary locking members may be different from those of the studs and recesses described and illustrated.

The shapes of the blades and / or teeth may be different from those described and illustrated.

The first and second return members can be different from tension and compression springs.

The device may be devoid of a backplate attached to the clasp housing.

The device may be without a flange attached to the assembly button.

It is recalled more generally that the invention is not limited to the examples described and represented.

Claims (20)

Device for opening and closing an article, in particular leather goods, comprising a clasp case (2) and an assembly button (3) configured to cooperate with said clasp case, which clasp case is provided with a mechanism admitting a locked configuration in which said article can be closed and an unlocked configuration in which said article can be opened, characterized in that said mechanism comprises a palastre (4) mounted movably in rotation with respect to said clasp housing (2) , between a first stable position and a second position, at least one locking member (60; 82) movably mounted in said clasp housing (2) and configured to be driven by said palastre (4), and a latch (45) mounted movably in translation in said clasp housing (2) and configured to cooperate with said palastre (4); said mechanism being configured such that: when said palastre (4) is in its first stable position and said assembly button (3) is introduced into said clasp housing (2), said at least one locking member (60; 82) immobilizes said button of assembly (3) at least in translation; when said palastre (4) is rotated and passes from its first stable position to its second position, said at least one locking member (60; 82) is moved until said assembly button (3) and said latch (45) is driven in translation in said clasp housing (2) until pushing said assembly button (3) out of said clasp housing (2); when said palastro (4) is in its second position, said latch (45) immobilizes said palastro (4) and said at least one locking member (60; 82); and when said assembly button (3) is reinserted into said clasp housing (2), said assembly button (3) pushes said latch (45) which releases said palastre (4) and said at least one locking member ( 60; 82), said palastre (4) is rotated and passes from its second position to its first stable position and said at least one locking member (60; 82) is moved until said assembly button ( 3) at least in translation. Device according to claim 1, characterized in that said palastre (4) comprises a plurality of windows (19), said mechanism comprises a palastre plate (7) provided with a plurality of chimneys (34) which extend from a inner face (33) of said palastre plate (7) and which are received in said windows (19) of said palastre (4), and said chimneys (34) are moved in said windows (19) when said palastre (4) is rotated and goes from its first stable position to its second position, and vice versa. Device according to Claim 2, characterized in that the said mechanism comprises a first return member (64) configured to return the said palastre (4) to its first stable position, the said first return member being formed for example by a tension spring. Device according to Claim 3, characterized in that the said palastre (4) comprises a complementary window (20), a first fastening rod (24) as well as an internal wall (21) at least partially circular, the said palastro plate (7) is provided with a second attachment rod (36) which protrudes from said internal face (33) of said palastre plate (7) and which is received in said complementary window (20) of said palastre (4), and said first return member (64) is at least partially disposed along said internal wall (21) of said palastre (4) and mechanically secured, by a first end to said first attachment rod (24) and, by a second end opposite said first end, said second tie rod (36). Device according to Claim 3, characterized in that said palastre (4) comprises a first attachment rod (24), said mechanism comprises a crown (81) housed in said palastre, said crown is provided with a wall at least partially circular from which protrudes a second attachment rod (84) as well as mounting lugs (85) in which said chimneys (34) of said palastre plate (7) are received, and said first return member (64) is at least partially disposed along said wall of said ring (81) and mechanically secured, by a first end to said first attachment rod (24) and, by a second opposite end to said first end, to said second tie rod (84). Device according to any one of claims 2 to 5, characterized in that said palastre (4) comprises a plurality of drive pins (27) which extend from an external face (28) of said palastre (4), in direction of said internal face (33) of said palastre plate (7), said mechanism comprises a plurality of blades (60) forming said locking members, said blades (60) are pivotally mounted on said chimneys (34) of said palastre plate (7) and are provided with notches (62) in which are inserted for displacement said drive pins (27) of said palastre (4), said assembly button (3) comprises a finger (11) provided of a circular groove (14), and when said palastre (4) is in its first stable position, said blades (60) are at least partially housed in said groove (14) of said finger (11) thus locking said button of assembly (3) in said palastre (4), while when said palastre (4) is in s in the second position, said blades (60) are pivoted relative to said palastre plate (7) by the action of said drive pins (27) of said palastre (4) in said notches (62) of said blades (60), said blades (60) are thus at a distance from said groove (14) of said finger (11) and said assembly button (3) can be released. Device according to any one of claims 1 to 5, characterized in that said palastre (4) comprises a central opening opening (18), teeth (82) which project into said central opening (18) and which form said organs locking, said assembly button (3) comprises a finger (11) provided with a circular groove (14) and flats (80) formed at a free end (15) of said finger (11), and when said palastro (4) is in its first stable position, said teeth (82) of said palastre (4) are at least partially housed in said groove (14) of said finger (11) and said flats (80) of said finger (11) are disposed substantially perpendicular to said teeth (82) thus locking said assembly button (3) in said palastre (4), while when said palastre (4) is in its second position, said flats (80) are substantially aligned with said teeth (82) and said assembly button (3) can be released. Device according to one of claims 6 and 7, characterized in that said assembly button (3) comprises a flange (12) mechanically secured to said finger (11) at an end opposite to said circular groove (14). Device according to Claim 8, characterized in that a space (13) is formed between said flange (12) and said finger (11) to interpose therein a first portion of said article, in particular of leather goods, for securing said button. assembly (3) on said article. Device according to any one of claims 1 to 9, characterized in that said mechanism further comprises a cover (5) relative to which said palastre (4) is movable in rotation, said latch (45) is mounted on said cover ( 5) and fixed in rotation with respect to the latter, said latch (45) is provided with at least one locking member and said palastro (4) is provided with at least one complementary locking member (25) configured to cooperate with said at least one blocking member of said latch (45) when said palastro (4) is in its second position, to immobilize said palastro (4) and said at least one locking member (60; 82). Device according to claim 10, characterized in that said cover (5) is provided with a plurality of chimneys (31) which extend from an internal face (30) of said cover (5) and said latch (45) has the general form of a plate in which are formed notches (46) receiving said stacks (31) of said cover (5) to immobilize the latter in rotation relative to said cover (5). Device according to one of claims 10 and 11, characterized in that said latch (45) is provided with at least one recess (47) forming said at least one locking member and said palastre (4) is provided with at least one stud (25) projecting from an internal face (22) of said palastre (4) and forming said at least one complementary locking member. Device according to claim 12, characterized in that said mechanism is configured so that said at least one stud (25) of said palastre (4) abuts against an edge of said at least one recess (47) of said latch (45), or is introduced into said at least one recess (47) of said latch (45), when said palastre (4) is in its second position. Device according to one of Claims 12 and 13, characterized in that said latch (45) is further provided with at least one shoulder (48) formed in a plate forming said latch (45), so as to form at least a said obviously (47) which is progressive in the sense that it allows to gradually block said palastre (4) in its first stable position. Device according to any one of claims 10 to 14, characterized in that said mechanism further comprises a second return member (65) configured to press said latch (45) against said palastre (4) in the absence of external bias, said second return member being formed for example by a compression spring. Device according to Claim 15, characterized in that the said cover (5) is provided with a seat (32) formed in its internal face (30) and partially accommodating the said second return member (65). Device according to claim 15, characterized in that said mechanism comprises a support pin (88) having a base disposed against an internal face (30) of said cover (5) and a rod on which said second return member (65) is mounted. , said mechanism further comprises a sleeve (89) provided with an internal space into which is introduced said second return member (65) mounted on said support pin (88) and provided with an external flange (90), and said latch (45) is provided with an orifice (87) and is slidably mounted on said sleeve (89), with said outer flange (90) of said sleeve (89) which bears against a face (49) of said latch ( 45) facing said internal face (30) of said cover (5). Device according to any one of claims 1 to 17, characterized in that said palastre (4) is mounted movably in rotation between a palastre plate (7) and a cover (5), which are mechanically secured together with the 'other, for example using fixing screws (67). Device according to any one of claims 1 to 18, characterized in that said mechanism comprises a palastre plate (7) by relative to which said palastre (4) is movable in rotation, said palastre plate (7) is provided with a wall (39) at least partially circular, and said clasp housing (2) further comprises a backplate ( 8) mechanically secured with said palastre plate (7) and disposed against said wall (39) so as to provide a space (10) between said palastro plate (7) and said backplate (8), to interpose a second portion of said article, in particular of leather goods, for securing said clasp case (2) on said article. Article, in particular of leather goods, comprising an opening and closing device (1) according to any one of claims 1 to 19, a first portion on which is fixed an assembly button (3) of said opening device and closure (1), and a second portion to which is fixed a clasp housing (2) of said opening and closing device (1), said opening and closing device (1) being configured to receive and immobilize said assembly button (3) in said clasp housing (2) in a locked configuration of a mechanism of said opening and closing device (1), and for releasing said assembly button (3) from said housing clasp (2) in an unlocked configuration of said mechanism.

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