EP0801908A1 - Fermoir pour chaines ornementales - Google Patents

Fermoir pour chaines ornementales Download PDF

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Publication number
EP0801908A1
EP0801908A1 EP97106363A EP97106363A EP0801908A1 EP 0801908 A1 EP0801908 A1 EP 0801908A1 EP 97106363 A EP97106363 A EP 97106363A EP 97106363 A EP97106363 A EP 97106363A EP 0801908 A1 EP0801908 A1 EP 0801908A1
Authority
EP
European Patent Office
Prior art keywords
ring
opening
clasp
annular structure
eyelet
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.)
Withdrawn
Application number
EP97106363A
Other languages
German (de)
English (en)
Inventor
Wilfried Stalling
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.)
JOSEF Eberle GmbH and Co KG
Original Assignee
JOSEF Eberle GmbH and Co KG
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 JOSEF Eberle GmbH and Co KG filed Critical JOSEF Eberle GmbH and Co KG
Publication of EP0801908A1 publication Critical patent/EP0801908A1/fr
Withdrawn legal-status Critical Current

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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
    • A44C5/18—Fasteners for straps, chains or the like
    • A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
    • A44C5/2009—Fasteners for straps, chains or the like for open straps, chains or the like of the ring type

Definitions

  • the invention relates to a clasp for jewelry chains with the features specified in the preamble of claim 1.
  • a clasp is known from DE-74 12 327 U.
  • the known clasp has a closed ring attached to one end of the chain and an open ring attached to the other end of the chain by means of an eyelet, into which the closed ring can be inserted at a point offset by 90 ° relative to the eyelet, for which purpose the open ring has a radial slot has, which is narrower than the closed ring is thick, so that it can only be inserted into this by bending the open ring.
  • larger clasps such as are required for voluminous chains, in particular pearl necklaces, this mode of operation requires a thin, weak formation of the ring, which makes it unstable and unattractive.
  • the present invention has for its object to provide a clasp without locking mechanism, which is easy to handle not only in small, but also in large dimensions and in which the risk of permanent deformation that could affect the safety of the clasp is less than that known clasp.
  • the opening existing between the two ends of the annular structure does not have to be elastically widened in order to insert the ring attached to the second end of the jewelry chain, because the clear width of the opening between the two ends of the annular structure is not less than the thickness of the ring to be inserted.
  • the ring-shaped structure can be designed to be so stable that it can be regarded as rigid when handled as intended and with the typical loads that occur in daily use. Permanent deformations are therefore not to be feared in practical use. Because easy bendability is not required, the jewelry designer is given additional options for designing the clasp from an aesthetic point of view.
  • the ring can easily have a shape that deviates from the circular shape and preferably also has a shape that deviates from the circular shape. This enables not only a more pleasing appearance of the clasp, but also greater functional reliability, because in this way you can remove the center of gravity of the ring-shaped structure from the eyelet, for example in the vicinity of the opening, so that gravity always opens the opening pulls downward and thereby keeps it away from the suspended ring, making unintentional sliding out of the ring from the opening of the annular structure unlikely.
  • the clasp can easily be made difficult also means that it automatically moves into a position away from the neck in a necklace, which further increases the security against unintentional opening of the clasp.
  • a "ring-shaped structure" in the sense of the present invention does not necessarily mean a structure that is circular in plan view, but also forms that deviate greatly from the circular shape, provided that they only completely enclose a free space in plan view.
  • the complete encapsulation should take place by an overlap of the two ends of the annular structure, the overlap being to take place in that the two ends of the annular structure are offset transversely to the surface enclosed by the annular structure. This transverse offset is essential for the locking security.
  • GB-2 269 627 A shows an offset of the two ends of an annular structure in the plane of the surface enclosed by the structure; Therefore, the clear width of the opening through which the ring can be inserted into the clasp must be dimensioned so narrow that the ring can only be inserted and moved out under elastic deformation in the known clasp.
  • the transverse offset provided according to the invention, similar to a helix, it is achieved, however, that the ring does not automatically find its way through the opening in the overlap region when the clasp is hanging, although the ring-shaped structure does not have to be elastically bent open to open the clasp.
  • the position of the eyelet relative to the position of the overlap area is expediently chosen so that the distance that the ring has to travel in order to reach the opening from a position normal when wearing a jewelry chain is sufficiently long. Due to the overlap and the proposed transverse offset in the The overlap area does not pose any difficulties for the jewelry designer, since he can change both the position of the ends of the annular structure and the length of the overlap area.
  • the clasp according to the invention is preferably designed such that the ring can only be pushed onto one of the two ends of the annular structure and can thus be inserted into the structure. This can be achieved in that the two ends of the annular structure are made of different thicknesses.
  • a shape deviating from the circular shape is preferred not only for the ring-shaped structure but also for the ring to be inserted therein, in combination with the fact that it is so narrow that it can only be in a selected orientation by pushing it onto one end of the annular structure is insertable in this.
  • this one end has a cross-sectional shape deviating from the circular shape.
  • the ring must be oval and the one end of the ring-shaped structure has an oval outline, so that the ring can only be pushed onto the one end of the ring-shaped structure if the main axes of the two ovals are oriented approximately the same, whereas at some distance from the end the cross-sectional shape of the structure can be such that it enables further orientations of the suspended ring. This measure again significantly increases the security against unintentional opening of the clasp.
  • the clear width of the opening provided in the overlap region of the clasp is so large that the ring can be inserted without elastic deformation of the annular structure.
  • the clear width of the opening should not be arbitrarily large, but should advantageously only be a little larger than is necessary for the convenient insertion of the ring in order to combine convenient handling and sufficient security against closure.
  • the locking security is particularly high if the ring is blocked by one of the Circular deviating or otherwise asymmetrical design can only pass through the opening in a selected orientation.
  • the invention leads to a clasp which, despite the lack of a locking mechanism, combines a high level of locking security with mechanical stability and great design freedom.
  • the drawing shows a pearl necklace 1, at one end of which an oval ring 2 and at the other end of which an annular structure 3 is fastened by means of an eyelet 4.
  • the annular structure 3 has a thin end 5 and a thick end 6, which overlap one another and have an offset transversely to the surface 7 enclosed by the structure, so that the thinner end 5 is largely covered by the thicker end 5 when the necklace is worn.
  • the thickness of the ring-shaped structure gradually increases from the thin end 5 to the thick end 6, similar to a screw.
  • the center of gravity of the structure 3 is closer to the opening 8 formed in the overlap area of the two ends 5 and 6 than to the eyelet 4, so that gravity automatically pulls the overlap area downwards and the ring 2 closer to when wearing the necklace Eyelet 4, further away from the opening 8 holds.
  • the cross section of the structure 3 deviates from the circular shape.
  • the clear width of the opening 8 is dimensioned so small that the oval ring 2 can only be passed through the opening 8 with its weakly curved section, but not with its more curved section.
  • the oval ring 2 can only be threaded out of the structure 3 in a certain orientation. If it does not have this orientation, it is inhibited in the narrow opening 8 and / or inevitably strikes the end face of the end 6 and cannot pass through the opening 8.
  • the ring 2 would still have to travel a distance over a circumferential angle of more than 90 ° in order to reach the end of the structure 3. This prevents accidental opening of the clasp.

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  • Adornments (AREA)
EP97106363A 1996-04-17 1997-04-17 Fermoir pour chaines ornementales Withdrawn EP0801908A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29606741U DE29606741U1 (de) 1996-04-17 1996-04-17 Schließe für Schmuckketten
DE29606741U 1996-04-17

Publications (1)

Publication Number Publication Date
EP0801908A1 true EP0801908A1 (fr) 1997-10-22

Family

ID=8022542

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106363A Withdrawn EP0801908A1 (fr) 1996-04-17 1997-04-17 Fermoir pour chaines ornementales

Country Status (2)

Country Link
EP (1) EP0801908A1 (fr)
DE (1) DE29606741U1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29611289U1 (de) * 1996-06-28 1996-09-12 Toennsen Silke Schmuckstück mit sichtbarer Öffnung zur Befestigung an Nadel, Kette, Knopf
DE19714754C2 (de) * 1996-11-12 2000-06-29 Hartung Hans Joachim Verschlußeinrichtung für ein Schmuckstück, insbesondere für eine Kette oder ein Collier

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB241414A (en) * 1924-12-12 1925-10-22 Ernest Alexander Earl A new or improved key-ring
DE3906175A1 (de) * 1988-03-01 1989-09-14 Kock Rainer Dipl Volksw Verschluss fuer ein arm-, schmuck- oder sonstiges band
DE9417434U1 (de) * 1994-11-02 1995-01-26 Foerster Bernhard Gmbh Schließe für Schmuckwaren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB241414A (en) * 1924-12-12 1925-10-22 Ernest Alexander Earl A new or improved key-ring
DE3906175A1 (de) * 1988-03-01 1989-09-14 Kock Rainer Dipl Volksw Verschluss fuer ein arm-, schmuck- oder sonstiges band
DE9417434U1 (de) * 1994-11-02 1995-01-26 Foerster Bernhard Gmbh Schließe für Schmuckwaren

Also Published As

Publication number Publication date
DE29606741U1 (de) 1996-06-05

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