Classifications

• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
  • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
  • A44C5/02—Link constructions
  • A44C5/04—Link constructions extensible
  • A44C5/08—Link constructions extensible having separate links
• • A—HUMAN NECESSITIES
  • A44—HABERDASHERY; JEWELLERY
  • A44C—PERSONAL ADORNMENTS, e.g. JEWELLERY; COINS
  • A44C5/00—Bracelets; Wrist-watch straps; Fastenings for bracelets or wrist-watch straps
  • A44C5/02—Link constructions
  • A44C5/10—Link constructions not extensible
  • A44C5/107—Link constructions not extensible with links made of more than two elements including connecting elements

Definitions

• the invention relates to a watch bracelet or a jewelry or precious metal article, formed by an assembly of articulated sets.
• Bracelets comprising assemblies of links with at least some of the links made of a hard material such as diamond or ceramic are well known from the prior art. Such bracelets are described, for example, in the documents EP2803286 And EP2057914 .
• a three-row bracelet consists of several side links with central links between them.
• the side links typically each have a blind hole, and the central link has a through hole.
• a pin is inserted into the through hole of the central links and has, at one end, a thread that engages with a threaded hole in the blind hole of one of the side links. At its other end, the pin is driven in and possibly welded into a socket screwed into the blind hole of the other side link.
• This assembly solution allows the three rows of links to be joined without plastic deformation of the lateral links, while ensuring permanent fixing of the links to each other.
• the invention overcomes the aforementioned drawbacks and, to this end, relates to a bracelet comprising a plurality of articulated assemblies formed by two central links joined to each other by first and second lateral links between which the central links are interposed.
• the first lateral link comprises two pins, each engaged in a hole extending through one of the central links, each pin being fixed to a socket on the second lateral link.
• Each socket comprises two distinct fixing zones through each of which the pin is driven into the socket.
• the invention may further comprise one or more of the following features, taken individually or in all technically possible combinations.
• the sockets extend into the central links by a distal part and extend into the second link by a proximal part.
• the proximal and distal parts each have one of the fixation zones.
• one of the fixing areas is formed by a radial boss of the sleeve configured to apply clamping forces on the pin, the boss having a convex cross-section shape.
• one of the fixing areas is formed by a collar configured to apply clamping forces on the pin, the collar being formed by a constant reduction in the cross-section of the sleeve.
• the pins comprise a proximal and a distal portion, each cooperating with a different attachment area of the socket, the distal portion having a cross-section smaller than the cross-section of the proximal part, the pin having an internal diameter at the boss larger than at the neck.
• the present invention relates to a watch bracelet or a jewelry item comprising several articulated assemblies 10 formed by two central links 13 joined to each other by two opposing lateral links 11 and 12, as shown in the figure 1 .
• the bracelet according to the invention is particularly adapted so that the lateral links 11 and 12 and central links 13 have a body 130 made of ceramic material, but the invention is not limited to the use of such a material.
• the first lateral link 11 comprises a body 110 to which are fixed without degree of freedom two pins 111.
• the body 110 of the first lateral link 11 comprises two recesses 112, each receiving a pin 111 with which it cooperates via a helical connection.
• Each pin 111 is preferably also glued into the recess 112 with which it cooperates.
• the pins 111 extend parallel to each other.
• the second lateral link 12 comprises a body 120 to which two bushings 121 are fixed without degrees of freedom.
• the body 120 of the second lateral link 12 includes two recesses 122, each receiving a bushing 121 with which it cooperates via a helical connection.
• Each bushing 121 is preferably also bonded in the recess 122 with which it cooperates.
• the sockets 121 extend parallel to each other, in a manner analogous to the pins 111.
• the pins 111 and the bushings 121 are intended to cooperate with each other so as to ensure the assembly of the first and second lateral links 11 and 12 and the central links 13 with each other to form an articulated assembly 10. This cooperation is described in detail later in the text.
• the pins 111 are made of titanium, as are the bushings 121.
• the use of titanium to make the pins 111 and the bushings 121 has the particular advantage of making a more rigid fixing of the links than with the use of steel and therefore allows better resistance to the mechanical stresses of the articulated assembly 10.
• Each central link 13 has two through holes 131, visible on the figures 1 and 2 , through each of which one of the pins 111 is engaged.
• the pins 111 of the first lateral link 11 are intended to be engaged respectively in holes 131 of two different central links 13 to form an articulated assembly 10. It is understood that the pins 111 and the holes 131 are dimensioned so as to allow rotational mobility of the central links 13 relative to the first and second lateral links 11 and 12.
• each pin 111 is made in one piece and has three successive portions. More precisely, as shown in the figure 2 In detail, each pin 111 has a first portion 113 by which it is fixed to the first lateral link 11, a second portion 114 extending the first portion 113 and engaged in a hole 131 of the central link 13 with a mechanical play allowing one degree of freedom in rotation, and a third portion 115 extending the second portion 114 and linked without degree of freedom with the sleeve 121.
• Each socket 121 is configured to cooperate with a pin 111 by means of two distinct fixing zones 123 visible in detail on the figure 3 and at each of which the pin 111 is driven in.
• the third portion 115 of each pin 111 comprises for this purpose two parts, including a proximal part 1150 and a distal part 1151, each cooperating with a different fixing zone 123 of the sleeve 121.
• the distal part 1151 has a smaller cross-section than the cross-section of the proximal part 1150, so as to facilitate the engagement of the pin 111 in the sleeve 121.
• one of the fixing areas 123 is formed by a radial boss 124 of the sleeve 121 configured to apply clamping forces on the proximal part 1150 of the pin 111.
• the boss 124 is characterized by a convex section shape.
• the other fixing area 123 of the sleeve 121 is formed by a collar 125 configured to apply clamping forces on the distal part 1151 of the pin 111.
• the collar 125 is characterized by a constant reduction in the cross-section of the sleeve 121, the contact area between the sleeve 121 and the pin 111 thus materializing a straight cylindrical surface.
• the internal diameter of the pin 111 at the boss 124 is larger than at the collar 125, in order to facilitate the driving of the pin 111 into the sleeve 121.
• the bushings 121 advantageously have a proximal portion 1211 through which they extend into the second lateral link 12 and a distal portion 1212 through which they extend into one of the holes 131 of a central link 13.
• the distal portion 1212 is fitted into the hole 131 with a mechanical clearance allowing one degree of rotational freedom of the bushing 121 relative to the central link 13.
• the proximal and distal portions 1211 and 1212 each have one of the attachment zones 123, as can be seen in the cross-sectional view of the figure 3
• the boss 124 is arranged on the distal part 1212 of the sleeve 121 and the collar 125 on the proximal part 1211. This feature helps to facilitate the driving of the pin 111 into the sleeve 121.
• the pins 111 are preferably all identical, as are the sockets 121.
• an articulated assembly 10 is carried out by first fixing the pins 111 to the body 110 of the first lateral link 11 and the bushings 121 to the body 120 of the second lateral link 12.
• the bushings 121 are then inserted into the through holes 131 of different central links 13, and then each of the pins 111 is inserted into one of said holes 131, until it penetrates a bushing 121 into which it is then driven.
• an articulated assembly 10 is formed.
• the present invention is not limited to the illustrated examples but is susceptible to various variations and modifications within the grasp of those skilled in the art.
• the number of central links 13 and lateral links 11 and 12 composing an articulated assembly according to the invention can vary.
• the sockets 121 and the pins 111 can be fixed to the lateral links 11 and 12 by any suitable fastening means such as bayonet-type devices, etc.

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Citations (6)

• 2024
  • 2024-06-03 EP EP24179599.6A patent/EP4659618A1/de active Pending
• 2025
  • 2025-05-09 US US19/203,247 patent/US20250366575A1/en active Pending
  • 2025-05-19 KR KR1020250064413A patent/KR20250173411A/ko active Pending
  • 2025-05-21 JP JP2025084666A patent/JP2025182680A/ja active Pending
  • 2025-05-27 CN CN202510690026.1A patent/CN121058981A/zh active Pending

Patent Citations (6)

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