EP0801907A1 - Fermoir à baionnette pour colliers de perles - Google Patents

Fermoir à baionnette pour colliers de perles Download PDF

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Publication number
EP0801907A1
EP0801907A1 EP97106362A EP97106362A EP0801907A1 EP 0801907 A1 EP0801907 A1 EP 0801907A1 EP 97106362 A EP97106362 A EP 97106362A EP 97106362 A EP97106362 A EP 97106362A EP 0801907 A1 EP0801907 A1 EP 0801907A1
Authority
EP
European Patent Office
Prior art keywords
openings
stop
head
plug
shaft
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.)
Granted
Application number
EP97106362A
Other languages
German (de)
English (en)
Other versions
EP0801907B1 (fr
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 EP0801907A1 publication Critical patent/EP0801907A1/fr
Application granted granted Critical
Publication of EP0801907B1 publication Critical patent/EP0801907B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • A44C5/185—Attachment of fasteners to straps or chains
    • 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
    • A44C5/2057—Fasteners locked by sliding or rotating of the male element of the fastener; Turn-button fasteners
    • A44C5/2061—Fasteners locked by sliding or rotating of the male element of the fastener; Turn-button fasteners combined with spring means

Definitions

  • the invention relates to a bayonet clasp for pearl necklaces with the features specified in the preamble of claim 1.
  • a clasp is known from CH-608 703 A5.
  • the plug-in part is fastened to one end of the pearl necklace, by means of the thread on which the pearls of the pearl necklace are lined up.
  • the plug-in part is inserted and fixed with its shaft in the hole of the last pearl.
  • the head of the plug-in part serves to engage in the receiving part, with which it is locked in the manner of a bayonet catch.
  • the receiving part known from CH-608 703 A5 has a sleeve into which a plug-in part can be inserted from both ends.
  • a helical spring is provided in the sleeve, the ends of which act on disks which abut projections which are provided in the vicinity of the insertion openings of the sleeve and project radially inward into the sleeve.
  • the receiving part receives a plug-in part, which has a ball head on opposite areas its outside has two grooves that start from its tip and end in an undercut. This ball head is inserted into the receiving part so that its projections engage in the grooves.
  • the projections of the sleeve snap into the undercuts of the grooves of the head in a bayonet-like manner; in this position the ball head is secured by the force of the helical spring.
  • the plug has a head with two diametrically arranged, outwardly projecting arms, and the receiving part for receiving this plug part in the sleeve has two incisions starting from the insertion opening , which end in undercuts, and instead of a disc lying on the coil spring as a cover, a short sleeve engaging in the coil spring is provided, one edge of which is flanged outwards and rests on the end of the coil spring.
  • this is provided at the insertion end with a flange which has an inwardly projecting edge against which the inner sleeve abuts.
  • Such receiving parts into which a plug-in part can be inserted from both ends, can easily be completely removed from a necklace.
  • Clasps are also known, the receiving part of which is firmly connected to the thread at one end of the necklace and into which a head part can only be inserted from one end (DE-43 37 616 C2); with such closures, the receiving part cannot be easily replaced. Closing is also known from DE-43 37 616 C2. in the receiving part of your choice plug-in parts with ball head and plug-in parts with cross head can be inserted, this is a head with two diametrically arranged, outwardly projecting arms.
  • an axial bore runs from the rear end of the shaft to the tip of the head.
  • the thread of the pearl necklace is pushed through the axial bore from behind, emerges at the tip of the head, is looped around a pin running transversely in a recess at the tip of the head, is returned to the axial bore and emerges from the rear end of the axial bore.
  • the end of the thread is pulled through the last pearl of the pearl necklace, pulled tight and knotted with the strand of the pearl necklace.
  • this thread guide is that the shaft of the plug-in part, which is pushed into the bore of the last pearl and glued therein, does not have to be detached from the pearl for threading the thread, which is difficult because of the adhesive connection and can damage the pearl.
  • a disadvantage of this type of thread guide is that the thread is exposed at the head of the plug-in part, in part in the groove which is provided for the bayonet-like engagement in the receiving part. When opening and closing the clasp, therefore, friction on the thread can occur, so that it is gradually worn out and then has to be renewed.
  • an axial bore also runs from the rear end of the shaft to the tip of the head and opens there into a recess in which the thread which is pushed from behind through the axial bore , a knot is formed which is so thick that it does not fit through the axial bore.
  • the thread appears at the tip of the head, so that friction can occur on the thread when the head is inserted into a receiving part and it can rub through.
  • the tensioning of the thread is more difficult with this type of knotting of the thread.
  • the present invention has for its object to show a way how to get a bayonet clasp of the type mentioned, in which the thread with which the plug-in part is fastened is protected on the one hand against chafing through the plug-in process on the head and on the other hand is conveniently changed can be.
  • the abutment around which the thread is looped is neither at the tip of the head nor in the shaft of the plug-in part, but in the head close to the stop which marks the boundary between the shaft and the head.
  • the abutment is formed by the rear boundary of a passage running transversely in the head close to the stop, through which the thread is drawn.
  • the longitudinal channel ends near the stop and stands in with two openings arranged diametrically on the stop Connection.
  • a thread inserted into the longitudinal channel from the rear end can emerge from one of these two openings, be inserted through the transverse passage and be reinserted into the longitudinal channel through the other, opposite opening and pushed out of its rear end. If the thread is pulled taut, it lies sunk in the two incisions open to the outside, which form transitions between the longitudinal channel and the transverse passage. In these incisions, the thread is open, but is not subject to any abrasive stress when it is brought about and when the bayonet-like engagement of the plug-in part and the receiving part is brought about, because the bayonet-like engagement does not take place at the stop, but further forward at the head of the plug-in part.
  • the two openings with which the longitudinal channel is connected can be provided directly adjacent to the stop in the head part, but they can also extend beyond the stop and lie partly on the head and partly on the shaft. It is even possible to provide the two openings of the longitudinal channel adjacent to the stop on the shaft; Even in this case, in combination with the incisions and the spherical surface of the last pearl receding from the stop, there is still the possibility of pushing the thread from behind out of one opening and pushing it back into the longitudinal channel through the opposite opening, although the plug-in part up to to the stop in the hole in the pearl. The thread emerges and re-enters in the immediate vicinity of the stop, where it does not interfere with the use of the clasp. Nevertheless, a new thread can be pulled into the plug-in part while it is in the last pearl of the pearl necklace until it stops.
  • the longitudinal channel can be an axially extending bore in the shaft, which branches towards the two openings. But it is also possible to use a longitudinally slotted shaft, because the longitudinal slot through the Hole surrounding the pearl, in which the shaft is inserted, is in any case supplemented to form a closed channel.
  • the passage provided in the head can be a bore running transversely in the head, which should run parallel to the alignment of the two openings of the channel in order to keep the incisions connecting them short.
  • the distance of the transverse bore from the openings of the longitudinal channel is preferably kept as small as possible and is best not more than 1 mm.
  • the path for the thread in the head becomes particularly short when the transverse passage intersects the two openings of the longitudinal channel.
  • the stop can be formed by a collar surface at the rear end of the head. This training is recommended for a plug-in part with a ball head.
  • the stop can also be formed by a collar; this training is recommended for a plug-in part with a cross head.
  • the tip of the needle or thread inevitably hits one or the other guide surface, it being indifferent is which of the two guide surfaces it meets, and is inevitably guided through it to one or the other opening, it being particularly advantageous if the guide surfaces are concave.
  • a plug-in part according to the invention including the channel with its openings and including the passage, can be produced by casting, it also being possible to cast concave guide surfaces by using a mold core with a correspondingly convex design. Another possibility is to have an axial hole branch into two oblique holes near the stop. Such a plug-in part can also be cast; but one could also cast a plug-in part with initially only an axial bore, with a transverse passage and incisions and subsequently create the diametrical openings of the channel by drilling the channel obliquely from the incisions.
  • Another possibility is to cast a plug-in part, the shaft of which has a continuous slot and then to trim the front end of the slot from both sides with a milling disk, which results in two concave guide surfaces, the radius of curvature of which corresponds to the radius of the milling disk.
  • the invention is suitable for plug-in parts with a cross head as well as for plug-in parts with a spherical head and can be used for all types of receiving parts mentioned at the beginning.
  • the receiving part shown in Figure 1 has a cylindrical sleeve 1 with an insertion opening 2 at one end and with a bottom 3 at the opposite end.
  • two diametrically opposite pins 4 and 5 are provided, which are inserted into the wall of the sleeve 1 and project inwards. So that they can not be pushed out, an outer sleeve 6 is pushed over the sleeve 1, which is flush with the front edge of the sleeve 1 and there has a flange 7, which serves as an assembly aid for positioning the receiving part in a jewelry part, which can in turn be attached to the end of a pearl necklace as part of a clasp.
  • the outer sleeve 6 is e.g.
  • a helical spring 8 is clamped between the pins 4 and 5 on one side and the base 3 on the other side. Between the coil spring 8 and the pins 4 and 5 there is a disk 9 which is pressed by the coil spring 8 against the pins 4 and 5.
  • This receiving part fits on a plug-in part with a spherical head, as shown in FIGS. 2 to 4.
  • This plug-in part has a shaft 13 which carries at one end a spherical head 14 which has two grooves 16 and 17 starting near its tip, which initially extend a little parallel to the longitudinal axis of the plug-in part, then bend at right angles and engage piece extend far in the circumferential direction until they finally end in an undercut 18.
  • the receiving part FIG. 1
  • one of the pins 4 and 5 engages in these grooves 16 and 17 and passes through the combined pushing and rotating movement typical of a bayonet lock into the respective undercut 18 and is there by the force of the helical spring 8 recorded.
  • the ball head 14 When the ball head 14 is inserted into the receiving part, the ball head hits the disk 9 and pushes it back against the force of the spring 8.
  • a longitudinal, substantially cylindrical channel 15 extends from the rear end of the shaft 13 to almost the front end of the shaft 13, which is formed by a stop 25, which is a collar surface on the back of the head 14.
  • the channel 15 branches into two arcuate subchannels 26 and 27, which lead to two diametrically opposite openings 28 and 29, which are partly in front of the stop 25 in the lateral surface of the shaft 13 and partly behind the stop 25 in the head 14.
  • a passage 30 runs transversely through the head 14, which has openings 31 and 32 with the branch channels 26 and 27 which extend outwards and extend to the shaft 13 connected is.
  • An abutment 33 is delimited by the passage 30, the incisions 31 and 32 and by the branch channels 26 and 27, around which a thread 34 can be looped, which is pushed into the channel 15 from behind, for example exiting through the branch channel 26, passed through the passage 30, re-inserted into the channel 15 through the branch channel 27 and led out of the rear end thereof.
  • the thread 34 is only represented as a line. If the thread is pulled taut, it lies sunk in the incisions 31 and 32.
  • the two rear sides of the abutment 33 which delimit the branch channels 26 and 27, are designed as concave guide surfaces 35 and 36, which meet at an apex 37 and are helpful, the thread 34 from the channel 15 through one of the openings 28 or 29 lead out and when reintroduced through one of the two openings 28 and 29 in the channel 16 towards its rear end.
  • the plug-in part shown in FIG. 5 has a cross head 19, at the rear end of which there is a collar 20, the rear side of which forms a stop 25, up to which the shaft 13 is pushed into the bore of a pearl.
  • a cross head 19 At the crosshead 19 two diametrically arranged, radially outwardly projecting extensions 21 and 22 are provided, which are cylindrical.
  • the cross head For easier insertion into a receiving part, the cross head has a nose 23 with a chamfer 24.
  • a matching receiving part is shown in FIG. 6; In contrast to the receiving part shown in FIG.
  • the nose 23 engages through the opening of the ring 38.
  • the radial projections 21 and 22 can only get into the undercuts 12 if they have previously pressed the ring 38 backwards against the force of the coil spring 8.
  • the helical spring 8 presses the ring 38 against the pins 21 and 22 and thereby holds them in the undercuts 12.

Landscapes

  • Adornments (AREA)
  • Farming Of Fish And Shellfish (AREA)
EP97106362A 1996-04-17 1997-04-17 Fermoir à baionnette pour colliers de perles Expired - Lifetime EP0801907B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE29606737U 1996-04-17
DE29606737U DE29606737U1 (de) 1996-04-17 1996-04-17 Bajonettschließe für Perlenketten

Publications (2)

Publication Number Publication Date
EP0801907A1 true EP0801907A1 (fr) 1997-10-22
EP0801907B1 EP0801907B1 (fr) 2001-05-30

Family

ID=8022538

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97106362A Expired - Lifetime EP0801907B1 (fr) 1996-04-17 1997-04-17 Fermoir à baionnette pour colliers de perles

Country Status (3)

Country Link
EP (1) EP0801907B1 (fr)
AT (1) ATE201571T1 (fr)
DE (2) DE29606737U1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1512338A1 (fr) * 2003-09-03 2005-03-09 YKK Europe Limited Curseur pour fermeture à glissière avec une tirette détachable

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH608703A5 (fr) * 1975-06-14 1979-01-31 Joerg Heinz
DE8912545U1 (fr) * 1989-10-23 1991-02-28 Heinz, Joerg, 7530 Pforzheim, De
DE9406228U1 (de) * 1994-04-14 1994-08-11 Eberle Josef Gmbh & Co Kg Anordnung aus einem Steckteil und aus einem Handhabungsteil für eine Schließe für Perlenketten

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH608703A5 (fr) * 1975-06-14 1979-01-31 Joerg Heinz
DE8912545U1 (fr) * 1989-10-23 1991-02-28 Heinz, Joerg, 7530 Pforzheim, De
DE9406228U1 (de) * 1994-04-14 1994-08-11 Eberle Josef Gmbh & Co Kg Anordnung aus einem Steckteil und aus einem Handhabungsteil für eine Schließe für Perlenketten

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1512338A1 (fr) * 2003-09-03 2005-03-09 YKK Europe Limited Curseur pour fermeture à glissière avec une tirette détachable

Also Published As

Publication number Publication date
EP0801907B1 (fr) 2001-05-30
DE59703636D1 (de) 2001-07-05
ATE201571T1 (de) 2001-06-15
DE29606737U1 (de) 1996-07-25

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