EP0749709B1 - Verbindungselement für Armbänder - Google Patents

Verbindungselement für Armbänder Download PDF

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Publication number
EP0749709B1
EP0749709B1 EP96101185A EP96101185A EP0749709B1 EP 0749709 B1 EP0749709 B1 EP 0749709B1 EP 96101185 A EP96101185 A EP 96101185A EP 96101185 A EP96101185 A EP 96101185A EP 0749709 B1 EP0749709 B1 EP 0749709B1
Authority
EP
European Patent Office
Prior art keywords
pin
connecting element
links
tubular element
extremities
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP96101185A
Other languages
English (en)
French (fr)
Other versions
EP0749709A1 (de
Inventor
Giovanni Rasia
Pierre Jean Marie Buise
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PROMOTION SRL
Original Assignee
PROMOTION SpA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by PROMOTION SpA filed Critical PROMOTION SpA
Publication of EP0749709A1 publication Critical patent/EP0749709A1/de
Application granted granted Critical
Publication of EP0749709B1 publication Critical patent/EP0749709B1/de
Anticipated expiration legal-status Critical
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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
    • A44C5/10—Link constructions not extensible
    • A44C5/107—Link constructions not extensible with links made of more than two elements including connecting elements
    • 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

Definitions

  • the invention concerns a connecting element particularly suited for arm bands.
  • a connecting element according to the preamble of claim 1 is known from the pratice.
  • one of the methods for manufacturing arm bands consists of linking together a plurality of links by means of a plurality of pins. More specifically, a plurality of central links and a plurality of lateral links, arranged side by side to said central links from both sides, are connected with one another by means of pins, wherein each pin is placed passing through one or more central links and presents its extremities inserted in dead holes drilled in the lateral links placed by the sides of said central link.
  • the pins which connect the links together essentially consist of a central cylindrical body the extremities of which have a smaller diameter than the central body and a longitudinal knurl. Each extremity is inserted by interference within a corresponding dead hole drilled in the lateral link and the length of such a dead hole is greater than the length of the extremity of the pin, so as to allow the central body to rest flush against the link.
  • a first inconvenience is that in case the interference is too great, during the fitting of the extremity of the pin into the corresponding dead hole, it may happen that one or more knurls are torn.
  • the knurl which is torn curls on itself and positions itself between the link and the pin, thus preventing the latter from completely resting against the link itself. Therefore, between pin and link there will be a crack which allows the penetration of perspiration into the hole which lodges the knurled extremity: in the course of time, the perspiration corrodes the knurl and compromises the resistance of the coupling, causing the links to come apart.
  • the US-A-4106877 discloses an improved pin of the type used in coupling mechanical parts together which presents a body containing a cross section of arcuate polygonal lobular configuration, but this kind of pin does not permit the rotation between said coupled parts.
  • the present invention proposes to overcome all the mentioned inconveniences.
  • One of the purposes of the invention is to obtain a connecting element for arm bands, which prevents the links of the arm band from becoming loose because of the corrosion of the connecting element in the point where it fits inside the links.
  • the arches which form the bulging profile of the transversal section of said pin are three in number and consist of the arches of three reciprocally intersecting circumferences.
  • the centres of said circumferences are off-set by the same distance in relation to the centre of the transversal section of the pin along three directions converging toward the centre of the section and forming together an angle of 120°.
  • the three circumference arches are tangent inside an ideal circumference having its centre in the centre of the transversal section of the pin.
  • the connecting element is made of stainless steel containing a low percentage of sulphur.
  • Fig. 1 The connecting element for arm bands according to the invention, indicated as a whole with 1, is represented in Fig. 1 wherein it can be observed that it is composed by a tubular element 2 inside which a pin 3 is inserted, the latter being visible in better detail in the drawing representations of the Figs. 2 and 3.
  • Said pin 3 presents its body complete with three lobes 150 which develop following a longitudinal direction according to the axis 31 of the pin 3, the transversal section 30 of which presents, therefore, a bulging profile formed by three arches 50.
  • Said three arches 50 belong to as many circumferences 51, the centres 61 of which are arranged along three axes 91 and at the same distance 71 in relation to the centre 81 of said transversal section 30, toward which said axes 91 converge.
  • Said distance 71 is the radius of a circumference 710 having a centre 81 in which said centres 61 are lined up.
  • said axes are reciprocally slanted of an angle 70 equivalent to 120°.
  • the connecting element 1 has the function of connecting a plurality of links with one another, which are represented in the Figs. 5 and 6, wherein they are indicated as a whole with 4, and which form the arm band.
  • said links, indicated as a whole with 4 comprise a plurality of central links 41 which are comprised between a plurality of first lateral links 42 and second lateral links 43, arranged on opposite sides in relation to said central links 41 and constituting the edges of the arm band, wherein said central links and said lateral links are joined together through a plurality of connecting means 1.
  • central links can be one or more than one, arranged side by side.
  • each of said central links 41 presents a pair of through holes 410, the diameter of which is equivalent to the outer diameter of the tubular element 2 and such, therefore, as to lodge a connecting element 1.
  • each of said lateral links 42 and 43 presents a pair of dead holes 420 and 430 respectively, within each of which the extremity 310 of each pin 3, which protrudes in relation to the width 40 of the corresponding central link, fits by interference.
  • the tubular element 2 also fits by interference in the corresponding hole 410 of each central link 41, so that the reciprocal rotation between central links and lateral links can be ensured by the rotation of the pin 3 inside the tubular element 2.
  • each tubular element 2 is equivalent to the width 40 of the central links 41, so that when each connecting element 1 is inserted in the corresponding central link 41, only the extremities 310 of the pins 3 protrude from the latter.
  • the lateral links 42 and 43 are laterally pressed against the central links 41, so that the dead holes 420 and 430 of the lateral links can receive the extremities 310 of the pins 3 which present bevelled sections 80 to make easier their insertion into the dead holes 420 and 430. Since the depth 450 of each dead hole 420 and 430 is bigger than the length 350 of the extremity 310 of each pin 3, the extremity of each tubular element 2 rests flush against the surface of the corresponding lateral link adjacent to it, thus isolating the extremity 310 of each pin 3 from the outside environment.
  • the first purpose that has been achieved is that of avoiding the eventual formation of burrs, during the insertion of the extremities of the pins into the corresponding dead holes of the lateral links, which can penetrate between each tubular element 2 and the corresponding lateral link thus compromising the orthogonality of the fitting.
  • the outer profile of the extremities 310 of the pins 3 are shaped like arches 50 of circumferences 51, the possibility of material protruding, due to an excessive interference between the pin and the hole is avoided. This, on the contrary, may happen in the pins according to the known technique since their extremities present knurls.
  • the profile of the pin is preferably obtained by means of a roll-forming operation, beginning from a pin having a circular section.
  • the roll-forming operation ensures the perfect symmetry of the pin section which is obtained and consequently, the perfect co-axiality between the pin and the tubular element within which it is inserted.
  • the pin and its corresponding tubular element which form each connecting element may be obtained in whichever sizes and of any material, preferably stainless steel of the AISI 316L type.
  • the transversal profile of the pin can also consist of a number of arches differing from three and such arches can be also arranged in a non-symmetrical position in relation to the centre of the transversal section of the pin itself.

Landscapes

  • Mutual Connection Of Rods And Tubes (AREA)
  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)

Claims (9)

  1. Verbindungselement (1) für Armbänder, bestehend aus Gliedern, wobei das Verbindungselement angepasst ist, die mittleren Glieder (41) eines Armbands mit den entsprechenden seitlichen Gliedern (42, 43) zu verbinden, wobei letztere nebeneinanderliegend angeordnet sind und die Seiten des Armbands darstellen, folgendes umfassend:
    ein röhrenförmiges Element (2), geeignet, in eine durchgehende Öffnung (410) zu passen, die in jedes der mittleren Glieder (41) gebohrt ist;
    ein Stift (3), der in dieses röhrenförmige Element (2) eingesteckt ist und dessen Enden (310) aus dem röhrenförmigen Element (2) herausragen und angepasst sind, um jeweils in ein entsprechendes, blindes Loch (420, 430) eingesteckt zu werden, welches in das entsprechende, seitliche Glied (42, 43) gebohrt ist, dadurch gekennzeichnet, dass der Stift (3) mit wenigstens drei Nocken (150) versehen ist, die seiner axialen Richtung entlang verlaufen und dem Querschnitt (39) des Steckers (3) ein ausgebauchtes Profil verleihen, das durch wenigstens drei sich gegenseitig überschneidende Bögen (50) gebildet ist, wobei dieser Stift drehbar ist innerhalb des röhrenförmigen Elements (2) und an seinen Enden (310) angepasst ist, durch Interferenz mit dem blinden Loch (420, 430) des seitlichen Glieds (42, 43) zusammenzupassen.
  2. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass das ausgebauchte Profil durch drei Bögen (50) gebildet ist, von denen jeder zu einem Umfang (51) gehört, wobei die Mittelpunkte (61) dieser Umfänge an drei Achsen (91) und im selben Abstand (71) zum Mittelpunkt (81) des Querschnitts (30), zu dem die Achsen (91) konvergieren, angeordnet sind, wobei diese Achsen (91) gegenseitig um einen Winkel (70) von 120° geneigt sind.
  3. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass das röhrenförmige Element (2) eine Länge (300) aufweist, die der Breite (40) einer oder mehrerer, seitlich nebeneinander liegender mittlerer Glieder (41) entspricht.
  4. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass das jedes Ende (310) des Stifts (3) eine Länge (350) aufweist, die kürzer ist als die Länge (450) des entsprechenden, blinden Lochs (420, 430) des seitlichen Glieds (42, 43).
  5. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass der Stift (3) und das röhrenförmige Element (2) für die Aufnahme des Stifts (3) miteinander eine Laufpassung bilden.
  6. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass jedes der Enden (310) des Stifts (3) zur Bildung einer Interferenzpassung mit jedem blinden Loch (420, 430) angepasst ist.
  7. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass der Stift (3) aus Edelstahl besteht.
  8. Verbindungselement (1) gemäß Patentanspruch 1), dadurch gekennzeichnet, dass das röhrenförmige Element (2) aus Edelstahl besteht.
  9. Verbindungselement (1) gemäß Patentanspruch 7) oder 8), dadurch gekennzeichnet, dass der Edelstahl vom Typ AISI 316L ist.
EP96101185A 1995-06-22 1996-01-29 Verbindungselement für Armbänder Expired - Lifetime EP0749709B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT95VI000099A IT1280522B1 (it) 1995-06-22 1995-06-22 Elemento di giunzione per bracciali
ITVI950099 1995-06-22

Publications (2)

Publication Number Publication Date
EP0749709A1 EP0749709A1 (de) 1996-12-27
EP0749709B1 true EP0749709B1 (de) 2001-05-02

Family

ID=11425811

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96101185A Expired - Lifetime EP0749709B1 (de) 1995-06-22 1996-01-29 Verbindungselement für Armbänder

Country Status (3)

Country Link
EP (1) EP0749709B1 (de)
DE (1) DE69612642T2 (de)
IT (1) IT1280522B1 (de)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE281089T1 (de) * 2000-05-17 2004-11-15 Promotion Spa Metallisches gliederarmband
EP1175844B1 (de) * 2000-07-19 2004-10-06 Montres Rado S.A. Uhrarmband mit angelenkten Gliedern
TW512054B (en) 2000-07-19 2002-12-01 Rado Montres Sa Wristband with articulated links
US8602638B2 (en) 2010-12-08 2013-12-10 Rolex S.A. Bracelet with articulated links and use of this bracelet

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH263364A (de) * 1948-05-08 1949-08-31 Ag Rodana Verfahren zum Befestigen eines zylindrischen Metallstiftes in einem Körper aus weicherem Metall und nach diesem Verfahren hergestelltes metallenes Glieder-Armband.
JPS5330352B2 (de) * 1971-12-14 1978-08-26
US4106877A (en) * 1976-09-16 1978-08-15 Research Engineeering & Manufacturing, Inc. Lobular pin
FR2594306B1 (fr) * 1986-02-14 1988-08-05 Omega Sa Bracelet non extensible a charnieres apparentes
FR2627677A1 (fr) * 1988-02-29 1989-09-01 Eterna Sa Dispositif d'assemblage a charniere pour maillons de br acelet
DE8907443U1 (de) * 1989-06-19 1989-09-14 Aesculap AG, 7200 Tuttlingen Intramedullärschiene für einen Röhrenknochen
US5197274A (en) * 1991-10-15 1993-03-30 E. Gluck Corporation Link assembly for a watch bracelet

Also Published As

Publication number Publication date
EP0749709A1 (de) 1996-12-27
DE69612642T2 (de) 2001-12-06
DE69612642D1 (de) 2001-06-07
ITVI950099A0 (it) 1995-06-22
IT1280522B1 (it) 1998-01-22
ITVI950099A1 (it) 1996-12-22

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