EP0200799B1 - Snap fastening - Google Patents

Snap fastening Download PDF

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Publication number
EP0200799B1
EP0200799B1 EP85105615A EP85105615A EP0200799B1 EP 0200799 B1 EP0200799 B1 EP 0200799B1 EP 85105615 A EP85105615 A EP 85105615A EP 85105615 A EP85105615 A EP 85105615A EP 0200799 B1 EP0200799 B1 EP 0200799B1
Authority
EP
European Patent Office
Prior art keywords
box
tongue
insertion end
opening
lock plate
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
EP85105615A
Other languages
German (de)
French (fr)
Other versions
EP0200799A1 (en
Inventor
Carolyn Marie Sturm
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.)
Individual
Original Assignee
Individual
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Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE8585105615T priority Critical patent/DE3585371D1/en
Priority to EP85105615A priority patent/EP0200799B1/en
Priority to AT85105615T priority patent/ATE72383T1/en
Priority to US06/785,890 priority patent/US4667378A/en
Publication of EP0200799A1 publication Critical patent/EP0200799A1/en
Application granted granted Critical
Publication of EP0200799B1 publication Critical patent/EP0200799B1/en
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
    • A44C5/20—Fasteners for straps, chains or the like for open straps, chains or the like
    • A44C5/2047—Fasteners provided with a V-shaped spring-tongue male member
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/39—Cord and rope holders
    • Y10T24/3902—Chain
    • Y10T24/3904—Bead chain fasteners
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T24/00—Buckles, buttons, clasps, etc.
    • Y10T24/45—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock]
    • Y10T24/45225—Separable-fastener or required component thereof [e.g., projection and cavity to complete interlock] including member having distinct formations and mating member selectively interlocking therewith
    • Y10T24/45471—Projection having movable connection between components thereof or variable configuration
    • Y10T24/45524—Projection having movable connection between components thereof or variable configuration including resiliently biased projection component or surface segment
    • Y10T24/45529—Requiring manual force applied against bias to interlock or disengage
    • Y10T24/45534—Requiring manual force applied against bias to interlock or disengage having connected leading edge and separated trailing arms

Definitions

  • the invention relates to a box lock for jewelry with a box and a cutter that protrudes into the box with an insertion end and engages in the striking plate with a resilient tongue relative to a fixed part, which is provided at its rear end facing away from the insertion end with an actuating part.
  • Such a box lock has become known from CH-A 138 957.
  • a snap spring part protrudes into the box of this box lock, which is locked with a nose in incisions made in a narrow side of the box. After the nose has snapped into the incision, part of the bending stresses in the area of the insertion end are equalized. However, the total tension cannot be compensated for, since the snap spring part can only be held in the latched position if the two opposite spring legs are pressed against the narrow sides of the box.
  • the snap spring part is constantly under bending stress when inserted into the box. In view of the fact that this bending stress is limited to the insertion end of the snap spring part, it is foreseeable that at this insertion end fatigue of the material forming the snap spring part occurs. This fatigue initially leads to the fact that the nose can no longer be properly engaged in the incisions. This creates a considerable risk that the snap spring part will come loose from the box.
  • the object of the present invention is therefore to improve the box lock of the type mentioned in the introduction in such a way that it ensures a secure closure in the long term, which can be produced relatively easily and cheaply with high precision, and allows any assignment of snappers and boxes.
  • the box and the cutter consist of a casting material and the cutter has a cast fixed front end, from which extends parallel to the fixed part in the direction of the operating part, the resilient tongue, which starts from the front part to the actuating part has a cross-section that initially decreases and then increases again and is relaxed in the engaged state.
  • the selection of the casting material gives the Schnepper its characteristic two-leg shape. During production, the material in the region of the front end is therefore not deformed in order to bend the resilient tongue around the front end. Rather, the material is in its idle state at the front end. There is therefore no severe deformation of the material for the purpose of manufacturing the cutter.
  • the Schnepper is relaxed in the locked state. Deformations are generated when the cutter snaps into place only during relatively short periods in which the cutter snaps into the striking plate or is released from it.
  • the resilient tongue is both in the engaged state and outside the box in the undeformed idle state.
  • the resilient tongue is deformed along its entire length.
  • deformations in the area of the front end take place at most in a negligible amount.
  • the cutter and the box can be manufactured with high precision. This ensures that the box can be assigned a variety of different trappers.
  • the material is uniformly homogeneous.
  • This design of the cast material results in a uniform distribution of the bending stress over the entire length of the resilient tongue.
  • the cast material is advantageously quenched at a predetermined temperature.
  • the cast material treated in this way has good elastic properties for a long time.
  • a box lock essentially consists of a box 1 and a cutter 2.
  • the cutter 2 projects with an insertion end 3 facing the box 1 through an opening 5 provided in a striking plate 4 into an interior 11 of the box 1 enclosed by walls 6,7,8,9,1o.
  • the striking plate 4 delimits the interior 11 in the direction of an actuating part 12 of the cutter 2, which is connected to the insertion end 3 via a resilient tongue 13.
  • the actuating part 12 lies directly against the striking plate 4 with its end wall 14 facing the insertion end 3.
  • the resilient tongue 13 is fixedly connected in the region of the insertion end 3 via a rigid unit 15 to a fixed part 16 which extends in the direction and essentially parallel to the resilient tongue 13 from the unit 15 in the direction of a connecting part 17 of the tractor 2.
  • this connecting part 17 the cross section of which corresponds approximately to that of the box 1
  • the fixed part 16 is firmly connected.
  • the fixed part 16 has a reduced cross section compared to the connecting part 17, the width of which corresponds to that of the opening 5.
  • This opening 5 is delimited in the longitudinal direction of the fixed part 16 on both sides by limiting webs 18, 19, which each form parts of the striking plate 4.
  • the striking plate 4 is provided on its underside 2o facing the wall 7 with a web, the height of which corresponds approximately to a distance 21 between a lower edge 22 of the fixed part 16 facing the wall 7 and a lower edge 23 of the latter which runs approximately parallel Connection part 17 is.
  • the size of this distance 21 is essentially predetermined by the wall thickness of the wall 7.
  • the fixed part 16 and the resilient tongue 13 each form legs of a U-shape whose yoke is formed by the unit 15. At its end facing the connection part 17, the fixed part 16 is firmly connected to the connection part 17, while the actuating part 12 connects to the resilient tongue 13 in the direction of the connection part 17.
  • a slot 24 extends between the resilient tongue 13 and the fixed part 16, the width of which corresponds to the maximum spring travel of the resilient tongue 13.
  • the resilient tongue 13 On its upper side 25 facing away from the slot 24, the resilient tongue 13 has an indentation 26 narrowing its cross section. Because of this indentation 26, the cross section of the resilient tongue 13 is reduced by so much that the resilient tongue is exerted on an actuating surface 27 of the actuating part 12 13 is elastically deformed in the direction of the slot 24. With such an elastic deformation, the unit 15 remains relatively at rest.
  • An increase extends in the longitudinal direction of the tongue 13 on the insertion end 3.
  • This increase 28 corresponds to a recess 31 provided in the striking plate 4, which extends from a boundary of the opening 5 in the direction of the upper wall 6.
  • the elevation 28 is guided in this recess 31 when the cutter 2 is pushed into the box 1.
  • the opening 5 has a cross section into which the cutter 2 can only be inserted in a predetermined correct position.
  • the insertion end 3 has a stem 32 which has rounded portions 29, 30 in the direction of a central plane extending vertically through the tongue.
  • the stem 32 has in the area of the lower edge 22 of the fixed part 16 has a front surface 33 which rises conically to the elevation 28 and which facilitates the insertion of the insertion end 3 into the opening 5.
  • the indentation 26 runs in the direction of the actuating part 12 with a tendency rising in the direction of an elevation 35.
  • this elevation 35 forms a grid 36 which is delimited on its side facing the insertion end 3 by an approximately vertically running stop surface 37.
  • the grid 36 is delimited by a delimitation surface 38 which forms a front delimitation of the actuating part 12 facing the insertion end 3.
  • the width of the grid 36 lying between the boundary surface 38 and the stop surface 37 corresponds to a wall thickness of the striking plate 4. This protrudes in the undeformed idle state of the resilient tongue 13 in the region of the opening 5 except for a base 39 delimiting the grid 36 in the direction of the slot 24 into the grid 36.
  • the height of the stop surface 37 corresponds approximately to that of the slot 24. In this way, the tongue 13 must be deformed very far in the direction of the slot 24 so that the striking plate 4 releases the stop surface 37 and thus the cutter 2 with its insertion end 3 from the opening 5 can be pulled out.
  • the actuating part 12 extends over the entire width of the cutter 2, so that the actuating surface 27 can be felt well. In order to prevent the operating surface 27 from sliding off, this is provided with a friendly surface for the operation of the tractor 2. This can have, for example, a groove 40 which extends transversely to the longitudinal direction of the tongue 13.
  • a bore 41 extends through the connecting part 17 transversely to the direction of the fixed part 16 and is used to connect a piece of jewelry, for example a chain 42.
  • a piece of jewelry for example a chain 42.
  • an eyelet can also be attached to the cutter 2.
  • This eyelet can also be formed by a screw extending through a U-shaped recess, to which the chain is attached.
  • a corresponding fastening option for example in the form of a hole 43, is attached to the box 1.
  • the chain 42 extends through this hole 43 with its end facing away from the bore 41.
  • An actuating distance 44 extends between the actuating part 12 and the connecting part 17, the width of which is dimensioned such that the actuating part 12 can be pressed down to the bottom of the slot 24 without the actuating part 12 having previously touched a wall 45 of the connecting part 17 adjacent to it strikes.
  • the cutter 2 When the chain 42 is put on, the cutter 2 is inserted with its insertion end 3 into the opening 5 such that the elevation 28 is guided through the recess 31 in the opening 5.
  • the elevation 35 By a slight pressure on the actuating part 12 in the direction of the slot 24, the elevation 35 is lowered so far in the direction of the fixed part 16 that it slides through the opening 5 without difficulty.
  • the pressure on the actuating part 12 is reduced so that the striking plate 4 engages in the grid 36 and thus prevents the cutter 2 with its insertion end 3 from being pulled out of the interior 11 of the box 1 again.
  • the box lock is now locked.
  • the actuating part 12 is pressed down again in the direction of the fixed part 16 until the elevation 35 can be pulled out of the opening 5 of the opening 5. Now the cutter 2 pulled out of the opening 5 slides out of the box 1 and is guided through the striking plate 4 by the elevation 28.
  • the upper side 25 of the cutter 2 can also be designed to run approximately parallel to the lower edge 22 of the fixed part 16.
  • a rigid unit 15 is provided at the insertion end 3.
  • This unit 15 is formed by a material accumulation from which the cross section of the tongue 13 can be drastically reduced in the direction of the slot 24. This reduction can either be carried out continuously from the elevation 28 in the direction of the indentation 26. However, it is also possible to carry out the reduction discontinuously, although care must be taken to ensure that the bending stresses that occur cannot cause a permanent fracture at a corner that is being formed.
  • the resilient tongue 13 opens into the grid 36 with a reduced cross section. However, it is also possible at this point form an elevation 35 to which the resilient tongue 13 can rise steadily or discontinuously.
  • the insertion end 3 can be designed in any way, as long as it is ensured that the unit 15 is rigid. For example, the elevation 28 as well as the stem 32 may be missing. These only make it easier to insert the insertion end 3 into the opening 5.
  • the cutter 2 is manufactured using the casting process. In this way, it obtains a uniformly homogeneous structure, which is of great importance particularly in the area of the insertion end 3. Preference is given to precious metals as the material for producing both the box 1 and the cutter 2. However, it is also possible to use other metals. Depending on the metal used, the entire cutter 2 is subjected to a heat treatment. In particular, the insertion end 3 and the tongue 13 can be deterred.

Landscapes

  • Snaps, Bayonet Connections, Set Pins, And Snap Rings (AREA)
  • Knives (AREA)
  • Adornments (AREA)
  • Connection Or Junction Boxes (AREA)
  • Insertion Pins And Rivets (AREA)

Abstract

A clasp lock whose clasp is a homogeneous one-piece U-shaped metallic casting having a rigid leg, a resilient leg and a rigid web which is integral with one end portion of the rigid leg as well as with one end portion of the resilient leg and is first to enter the chamber of the receptacle when the clasp is inserted through the opening in the front wall of the receptacle. The cross-sectional area of one or more parts of the intermediate portion of the resilient leg diminishes gradually or abruptly in a direction from one toward the other end portion of such leg.

Description

Die Erfindung betrifft ein Kastenschloß für Schmückstücke mit einem Kasten und einem Schnepper, der in den Kasten mit einem Einsteckende hineinragt und in dessen Schließblech mit einer gegenüber einem Festteil federnden Zunge einrastet, die an ihrem dem Einsteckende abgewandten hinteren Ende mit einem Betätigungsteil versehen ist.The invention relates to a box lock for jewelry with a box and a cutter that protrudes into the box with an insertion end and engages in the striking plate with a resilient tongue relative to a fixed part, which is provided at its rear end facing away from the insertion end with an actuating part.

Ein derartiges Kastenschloß ist aus der CH-A 138 957 bekanntgeworden. In den Kasten dieses Kastenschlosses ragt ein Schnappfederteil hinein, der mit einer Nase in Einschnitten verriegelt ist, die in einer Schmalseite des Kastens angebracht sind. Nach dem Einrasten der Nase in den Einschnitt gleicht sich ein Teil der Biegespannungen im Bereich des Einsteckendes aus. Jedoch kann nicht die gesamte Spannung ausgeglichen werden, da der Schnappfederteil in der eingerasteten Stellung nur gehalten werden kann, wenn die beiden sich gegenüberliegenden Federschenkel jeweils gegen die Schmalseiten des Kastens gedrückt werden. Damit steht der Schnappfederteil in seinem in den Kasten eingeschobenen Zustand ständig unter Biegespannung. Angesichts der Tatsache, daß diese Biegespannung auf das Einsteckende des Schnappfederteils beschränkt ist, ist abzusehen, daß an diesem Einsteckende eine Ermüdung des den Schnappfederteil bildenden Materials eintritt. Dieses Ermüdung führt zunächst dazu, daß mit einem ordnungsgemäßen Einrasten der Nase in die Einschnitte nicht mehr gerechnet werden kan. Dadurch entsteht eine erhebliche Gefahr, daß sich der Schnappfederteil aus dem Kasten löst.Such a box lock has become known from CH-A 138 957. A snap spring part protrudes into the box of this box lock, which is locked with a nose in incisions made in a narrow side of the box. After the nose has snapped into the incision, part of the bending stresses in the area of the insertion end are equalized. However, the total tension cannot be compensated for, since the snap spring part can only be held in the latched position if the two opposite spring legs are pressed against the narrow sides of the box. Thus, the snap spring part is constantly under bending stress when inserted into the box. In view of the fact that this bending stress is limited to the insertion end of the snap spring part, it is foreseeable that at this insertion end fatigue of the material forming the snap spring part occurs. This fatigue initially leads to the fact that the nose can no longer be properly engaged in the incisions. This creates a considerable risk that the snap spring part will come loose from the box.

Um diesem Nachteil zu begegnen, muß damit gerechnet werden, daß ein Benutzer des Kastenschlosses den Schnappfederteil an seinem Einsteckende aufweitet, um neuerdings für die eine ordnungsgemäße Verriegelung des Schnappfederteils im Kasten notwendige Spannung zu sorgen. Durch das notwendige Verbiegen tritt eine frühzeitige Ermüdung des Materials ein. Darüber hinaus ragt der zwischen den beiden Federschenkeln vorhandene freie Raum mit einem sehr spitzen Ende in Richtung auf das Einsteckende. Dieses spitze Ende ist die Ursache von Dauerbrüchen, die sich von dem spitzen Ende in Richtung auf das Einsteckende aufgrund der auftretenden Wechselbeanspruchungen fortpflanzen. Mit einem baldigen Bruch im Bereich des Einsteckendes muß gerechnet werden. Er tritt auch erfahrungsgemäß bei derartigen Kastenschlössern auf.In order to counter this disadvantage, it must be expected that a user of the box lock will widen the snap spring part at its insertion end in order to ensure the proper locking of the snap spring part in the box. The necessary bending causes the material to fatigue at an early stage. In addition, the free space between the two spring legs protrudes with a very pointed end towards the insertion end. This pointed end is the cause of fatigue breaks, which extend from the pointed end towards the insertion end due to the alternating stresses that occur reproduce. An early break in the area of the insertion end must be expected. Experience has also shown that it occurs with such box locks.

Aufgabe der vorliegenden Erfindung ist es daher, das Kastenschloß der einleitend genannten Art so zu verbessern, daß es auf Dauer einen sicheren Abschluß gewährleistet, der relativ einfach und billig mit hoher Präzision hergestellt werden kann, und eine beliebige Zuordnung von Schneppern und Kästen erlaubt.The object of the present invention is therefore to improve the box lock of the type mentioned in the introduction in such a way that it ensures a secure closure in the long term, which can be produced relatively easily and cheaply with high precision, and allows any assignment of snappers and boxes.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß der Kasten und der Schnepper aus einem Gußmaterial bestehen und der Schnepper ein gegossenes festes vorderes Ende aufweist, von dem sich parallel zu dem Festteil in Richtung auf den Bedienungsteil die federnde Zunge erstreckt, die ausgehend vom vorderen Teil bis zum Betätigungsteil einen zunächst abnehmenden und anschließend wieder zunehmenden Querschnitt aufweist und im eingerasteten Zustand entspannt ist.This object is achieved in that the box and the cutter consist of a casting material and the cutter has a cast fixed front end, from which extends parallel to the fixed part in the direction of the operating part, the resilient tongue, which starts from the front part to the actuating part has a cross-section that initially decreases and then increases again and is relaxed in the engaged state.

Durch die Auswahl des Gußmaterials erhält der Schnepper seine charakteristische zweischenklige Form. Bei der Herstellung wird daher das Material im Bereich des vorderen Endes nicht verformt, um die federnde Zunge um das vordere Ende zu biegen. Vielmehr befindet sich das Material am vorderen Ende in seinem Ruhezustand. Eine starke Verformung des Materials zum Zwecke der Herstellung des Schneppers tritt daher nicht ein.The selection of the casting material gives the Schnepper its characteristic two-leg shape. During production, the material in the region of the front end is therefore not deformed in order to bend the resilient tongue around the front end. Rather, the material is in its idle state at the front end. There is therefore no severe deformation of the material for the purpose of manufacturing the cutter.

Darüber hinaus ist der Schnepper im eingerasteten Zustand entspannt. Verformungen werden beim Einrasten des Schneppers nur während relativ kurzen Zeiträumen erzeugt, in denen der Schnepper in das Schließblech einrastet bzw. aus diesem gelöst wird. Im übrigen befindet sich die federnde Zunge sowohl im eingerasteten Zustand als auch außerhalb des Kastens im unverformten Ruhezustand.In addition, the Schnepper is relaxed in the locked state. Deformations are generated when the cutter snaps into place only during relatively short periods in which the cutter snaps into the striking plate or is released from it. In addition, the resilient tongue is both in the engaged state and outside the box in the undeformed idle state.

Schließlich finden beim Einrasten bzw. Lösen des Schneppers aus seiner Einrastung Verformungen der federnden Zunge entlang ihrer gesamten Länge statt. Verformungen im Bereich des vorderen Endes finden demgegenüber höchstens in einem zu vernachlässigenden kleinen Umfange statt. Durch die Ausbildung der federnden Zunge im Sinne des in ihrer Mitte etwa angeordneten kleinsten Querschnittes wird erreicht, daß sich die Zunge auf ihrer gesamten Länge etwa gleichmäßig verformt. Dadurch wird das vordere Ende der Zunge stark entlastet.Finally, when the cutter is snapped in or released, the resilient tongue is deformed along its entire length. In contrast, deformations in the area of the front end take place at most in a negligible amount. By designing the resilient tongue in the sense of the smallest cross-section arranged in its middle it is achieved that the tongue deforms approximately uniformly over its entire length. This greatly relieves the front end of the tongue.

Durch die Verwendung der Gießtechnik kann der Schnepper und auch der Kasten mit hoher Präzision hergestellt werden. Damit ist gewährleistet, daß dem Kasten eine Vielzahl verschiedener Schnepper zugeordnet werden kann.By using the casting technique, the cutter and the box can be manufactured with high precision. This ensures that the box can be assigned a variety of different trappers.

Gemäß einer bevorzugten Ausführungsform der Erfindung ist das Material gleichmäßig homogen ausgebildet. Durch diese Ausbildung des Gußmaterials findet eine gleichmäßige Verteilung der Biegespannung über die gesamte Länge der federnden Zunge statt. Darüber hinaus wird das Gußmaterial zweckmäßigerweise bei einer vorgegebenen Temperatur abgeschreckt. Das auf diese Weise behandelte Gußmaterial besitzt auf lange Zeit gute federnde Eigenschaften.According to a preferred embodiment of the invention, the material is uniformly homogeneous. This design of the cast material results in a uniform distribution of the bending stress over the entire length of the resilient tongue. In addition, the cast material is advantageously quenched at a predetermined temperature. The cast material treated in this way has good elastic properties for a long time.

Weitere Einzelheiten der Erfindung ergeben sich aus der nachfolgenden ausführlichen Beschreibung und den beigefügten Zeichnungen, in denen eine bevorzugte Ausführungsform der Erfindung beispielsweise veranschaulicht ist.Further details of the invention will become apparent from the following detailed description and the accompanying drawings, in which a preferred embodiment of the invention is illustrated, for example.

In den Zeichnungen zeigen:

Fig. 1:
eine Seitenansicht eines Schneppers,
Fig. 2:
eine Draufsicht auf einen Schnepper,
Fig. 3:
eine Seitenansicht eines Kastenschlosses mit einem teilweise geschnittenen Kasten,
Fig. 4:
eine Vorderansicht eines Kastens.
The drawings show:
Fig. 1:
a side view of a tractor,
Fig. 2:
a top view of a snapper,
Fig. 3:
a side view of a box lock with a partially cut box,
Fig. 4:
a front view of a box.

Ein Kastenschloß besteht im wesentlichen aus einem Kasten 1 und einem Schnepper 2. Der Schnepper 2 ragt mit einem dem Kasten 1 zugewandten Einsteckende 3 durch eine in einem Schließblech 4 vorgesehene Öffnung 5 in einen von Wandungen 6,7,8,9,1o umschlossenen Innenraum 11 des Kastens 1 hinein. Das Schließblech 4 begrenzt den Innenraum 11 in Richtung auf ein Betätigungsteil 12 des Schneppers 2, das über eine federnde Zunge 13 mit dem Einsteckende 3 verbunden ist. Bei einem in den Innenraum 11 eingefahreren Einsteckende 3 liegt das Betätigungsteil 12 mit seiner dem Einsteckende 3 zugewandten Stirnwand 14 unmittelbar am Schließblech 4 an.A box lock essentially consists of a box 1 and a cutter 2. The cutter 2 projects with an insertion end 3 facing the box 1 through an opening 5 provided in a striking plate 4 into an interior 11 of the box 1 enclosed by walls 6,7,8,9,1o. The striking plate 4 delimits the interior 11 in the direction of an actuating part 12 of the cutter 2, which is connected to the insertion end 3 via a resilient tongue 13. When an insertion end 3 is inserted into the interior 11, the actuating part 12 lies directly against the striking plate 4 with its end wall 14 facing the insertion end 3.

Die federnde Zunge 13 ist im Bereich des Einsteckendes 3 über eine biegesteife Einheit 15 fest mit einem festen Teil 16 verbunden, das sich in Richtung und im wesentlichen parallel zur federnden Zunge 13 von der Einheit 15 in Richtung auf ein Anschlußteil 17 des Schneppers 2 erstreckt. Mit diesem Anschlußteil 17, dessen Querschnitt in etwa demjenigen des Kastens 1 entspricht, ist das Festteil 16 fest verbunden. Allerdings besitzt das Festteil 16 einen gegenüber dem Anschlußteil 17 vermindert Querschnitt, dessen Breite derjenigen der Öffnung 5 entspricht. Diese Öffnung 5 wird in Längsrichtung des Festteils 16 auf ihren beiden Seiten durch Begrenzungsstege 18,19 begrenzt, die jeweils Teile des Schließbleches 4 bilden. Darüber hinaus ist das Schließblech 4 an seiner der Wandung 7 zugekehrten Unterseite 2o mit einem Steg versehen, dessen Höhe in etwa einem Abstand 21 entspricht, der zwischen einer der Wandung 7 zugekehrten Unterkante 22 des Festteils 16 und einer dieser in etwa parallel verlaufenden Unterkante 23 des Anschlußteiles 17 liegt. Die Größe dieses Abstandes 21 wird im wesentlichen vorgegeben von der Wandstärke der Wandung 7.The resilient tongue 13 is fixedly connected in the region of the insertion end 3 via a rigid unit 15 to a fixed part 16 which extends in the direction and essentially parallel to the resilient tongue 13 from the unit 15 in the direction of a connecting part 17 of the tractor 2. With this connecting part 17, the cross section of which corresponds approximately to that of the box 1, the fixed part 16 is firmly connected. However, the fixed part 16 has a reduced cross section compared to the connecting part 17, the width of which corresponds to that of the opening 5. This opening 5 is delimited in the longitudinal direction of the fixed part 16 on both sides by limiting webs 18, 19, which each form parts of the striking plate 4. In addition, the striking plate 4 is provided on its underside 2o facing the wall 7 with a web, the height of which corresponds approximately to a distance 21 between a lower edge 22 of the fixed part 16 facing the wall 7 and a lower edge 23 of the latter which runs approximately parallel Connection part 17 is. The size of this distance 21 is essentially predetermined by the wall thickness of the wall 7.

Der Festteil 16 und die federnde Zunge 13 bilden jeweils Schenkel einer U-Form deren Joch von der Einheit 15 gebildet wird. An seinem dem Anschlußteil 17 zugewandten Ende ist der Festteil 16 fest mit dem Anschlußteil 17 verbunden, während sich an die federnde Zunge 13 in Richtung auf den Anschlußteil 17 das Betätigungsteil 12 anschließt. Zwischen der federnden Zunge 13 und dem Festteil 16 erstreckt sich ein Schlitz 24, dessen Breite dem maximalen Federweg der federnden Zunge 13 entspricht. Auf ihrer dem Schlitz 24 abgewandten Oberseite 25 besitzt die federnde Zunge 13 eine ihren Querschnitt verengende Einbuchtung 26. Aufgrund dieser Einbuchtung 26 wird der Querschnitt der federnden Zunge 13 um soviel vermindert, daß bei einem auf eine Betätigungsfläche 27 des Betätigungsteils 12 ausgeübten Druck die federnde Zunge 13 in Richtung auf den Schlitz 24 elastisch verformt wird. Bei einer derartigen elastischen Verformung bleibt die Einheit 15 relativ in Ruhe.The fixed part 16 and the resilient tongue 13 each form legs of a U-shape whose yoke is formed by the unit 15. At its end facing the connection part 17, the fixed part 16 is firmly connected to the connection part 17, while the actuating part 12 connects to the resilient tongue 13 in the direction of the connection part 17. A slot 24 extends between the resilient tongue 13 and the fixed part 16, the width of which corresponds to the maximum spring travel of the resilient tongue 13. On its upper side 25 facing away from the slot 24, the resilient tongue 13 has an indentation 26 narrowing its cross section. Because of this indentation 26, the cross section of the resilient tongue 13 is reduced by so much that the resilient tongue is exerted on an actuating surface 27 of the actuating part 12 13 is elastically deformed in the direction of the slot 24. With such an elastic deformation, the unit 15 remains relatively at rest.

Auf dem Einsteckende 3 erstreckt sich eine Erhöhung in Längsrichtung der Zunge 13. Dieser Erhöhung 28 entspricht eine im Schließblech 4 vorgesehene Ausneh - mung 31, die sich von einer Begrenzung der Öffnung 5 in Richtung auf die obere Wandung 6 erstreckt. In dieser Ausnehmung 31 wird die Erhöhung 28 geführt, wenn der Schnepper 2 in den Kasten 1 eingeschoben wird. Auf diese Weise erhält die Öffnung 5 einen Querschnitt, in den der Schnepper 2 nur in einer vorgegebenen richtigen Lage eingeführt werden kann.An increase extends in the longitudinal direction of the tongue 13 on the insertion end 3. This increase 28 corresponds to a recess 31 provided in the striking plate 4, which extends from a boundary of the opening 5 in the direction of the upper wall 6. The elevation 28 is guided in this recess 31 when the cutter 2 is pushed into the box 1. In this way, the opening 5 has a cross section into which the cutter 2 can only be inserted in a predetermined correct position.

Darüber hinaus weist das Einsteckende 3 einen Vorbau 32 auf, der in Richtung auf eine sich vertikal durch die Zunge erstreckende Mittelebene Abrundungen 29, 3o aufweist. Der Vorbau 32 besitzt im Bereich der Unterkante 22 des Festteils 16 eine konisch zur Erhöhung 28 ansteigende Vorderfläche 33, die die Einführung des Einsteckendes 3 in die Öffnung 5 erleichtert.In addition, the insertion end 3 has a stem 32 which has rounded portions 29, 30 in the direction of a central plane extending vertically through the tongue. The stem 32 has in the area of the lower edge 22 of the fixed part 16 has a front surface 33 which rises conically to the elevation 28 and which facilitates the insertion of the insertion end 3 into the opening 5.

Die Einbuchtung 26 verläuft in Richtung auf den Betätigungsteil 12 mit einer in Richtung auf eine Erhöhung 35 ansteigenden Tendenz. Diese Erhöhung 35 bildet auf ihrer der Einbuchtung 26 abgewandten Seite ein Raster 36 aus, das auf seiner dem Einsteckende 3 zugewandten Seite durch eine etwa vertikal verlaufende Anschlagfläche 37 begrenzt ist. Auf ihrer der Anschlagfläche 37 gegenüberliegenden Seite wird das Raster 36 von einer Begrenzungsfläche 38 begrenzt, die eine dem Einsteckende 3 zugewandte vordere Begrenzung des Betätigungsteils 12 bildet. Die zwischen der Begrenzungsfläche 38 und der Anschlagfläche 37 liegende Breite des Rasters 36 entspricht einer Wandstärke des Schließbleches 4. Dieses ragt im unverformten Ruhezustand der federnden Zunge 13 im Bereich der Öffnung 5 bis auf einen das Raster 36 in Richtung auf den Schlitz 24 begrenzenden Grund 39 in das Raster 36 hinein.The indentation 26 runs in the direction of the actuating part 12 with a tendency rising in the direction of an elevation 35. On its side facing away from the indentation 26, this elevation 35 forms a grid 36 which is delimited on its side facing the insertion end 3 by an approximately vertically running stop surface 37. On its side opposite the stop surface 37, the grid 36 is delimited by a delimitation surface 38 which forms a front delimitation of the actuating part 12 facing the insertion end 3. The width of the grid 36 lying between the boundary surface 38 and the stop surface 37 corresponds to a wall thickness of the striking plate 4. This protrudes in the undeformed idle state of the resilient tongue 13 in the region of the opening 5 except for a base 39 delimiting the grid 36 in the direction of the slot 24 into the grid 36.

Die Höhe der Anschlagfläche 37 entspricht in etwa derjenigen des Schlitzes 24. Auf diese Weise muß die Zunge 13 sehr weit in Richtung des Schlitzes 24 verformt werden, damit das Schließblech 4 die Anschlagfläche 37 freigibt und damit der Schnepper 2 mit seinem Einsteckende 3 aus der Öffnung 5 herausgezogen werden kann.The height of the stop surface 37 corresponds approximately to that of the slot 24. In this way, the tongue 13 must be deformed very far in the direction of the slot 24 so that the striking plate 4 releases the stop surface 37 and thus the cutter 2 with its insertion end 3 from the opening 5 can be pulled out.

Das Betätigungsteil 12 erstreckt sich über die gesamte Breite des Schneppers 2, so daß die Betätigungsfläche 27 gut ertastet werden kann. Um ein Abgleiten von der Betätigungsfläche 27 zu verhindern, ist diese mit einer für die Betätigung des Schneppers 2 freundlichen Oberfläche versehen. Diese kann beispielsweise eine Nut 4o aufweisen, die sich quer zur Längsrichtung der Zunge 13 erstreckt.The actuating part 12 extends over the entire width of the cutter 2, so that the actuating surface 27 can be felt well. In order to prevent the operating surface 27 from sliding off, this is provided with a friendly surface for the operation of the tractor 2. This can have, for example, a groove 40 which extends transversely to the longitudinal direction of the tongue 13.

Durch den Anschlußteil 17 erstreckt sich quer zur Richtung des Festteils 16 eine Bohrung 41, die dem Anschluß eines Schmuckstückes, beispielsweise einer Kette 42 dient. Statt einer Bohrung 41 kann auch am Schnepper 2 eine Öse befestigt sein. Diese Öse kann auch durch eine sich durch eine U-förmige Vertiefung erstreckende Schraube gebildet sein, an der die Kette befestigt wird. Eine entsprechende Befestigungsmöglichkeit beispielsweise in Form eines Loches 43 ist am Kasten 1 angebracht. Durch dieses Loch 43 erstreckt sich die Kette 42 mit ihrem der Bohrung 41 abgewandten Ende.A bore 41 extends through the connecting part 17 transversely to the direction of the fixed part 16 and is used to connect a piece of jewelry, for example a chain 42. Instead of a bore 41, an eyelet can also be attached to the cutter 2. This eyelet can also be formed by a screw extending through a U-shaped recess, to which the chain is attached. A corresponding fastening option, for example in the form of a hole 43, is attached to the box 1. The chain 42 extends through this hole 43 with its end facing away from the bore 41.

Zwischen dem Betätigungsteil 12 und dem Anschlußteil 17 erstreckt sich ein Betätigungsabstand 44, dessen Weite so bemessen ist, daß das Betätigungsteil 12 bis auf den Boden des Schlitzes 24 hinabgedrückt werden kann, ohne daß das Betätigungsteil 12 zuvor an einer ihm benachbarten Wandung 45 des Anschlußteils 17 anschlägt.An actuating distance 44 extends between the actuating part 12 and the connecting part 17, the width of which is dimensioned such that the actuating part 12 can be pressed down to the bottom of the slot 24 without the actuating part 12 having previously touched a wall 45 of the connecting part 17 adjacent to it strikes.

Beim Anlegen der Kette 42 wird der Schnepper 2 mit seinem Einsteckende 3 so in die Öffnung 5 eingeführt, daß die Erhöhung 28 durch die Ausnehmung 31 der Öffnung 5 geführt wird. Durch einen leichten Druck auf den Betätigungsteil 12 in Richtung auf den Schlitz 24 wird die Erhöhung 35 soweit in Richtung auf den Festteil 16 abgesenkt, daß sie ohne Schwierigkeiten durch die Öffnung 5 hindurchgleitet. Nachdem das Schließblech 4 an der ihm zugewandten Stirnwand 14 des Betätigungsteils 12 anliegt, wird der Druck auf das Betätigungsteil 12 vermindert, so daß das Schließblech 4 in den Raster 36 einrastet und damit verhindert, daß der Schnepper 2 mit seinem Einsteckende 3 wieder aus dem Inneren 11 des Kastens 1 herausgezogen werden kann. Nunmehr ist das Kastenschloß verriegelt.When the chain 42 is put on, the cutter 2 is inserted with its insertion end 3 into the opening 5 such that the elevation 28 is guided through the recess 31 in the opening 5. By a slight pressure on the actuating part 12 in the direction of the slot 24, the elevation 35 is lowered so far in the direction of the fixed part 16 that it slides through the opening 5 without difficulty. After the striking plate 4 on the end wall 14 of the actuating part facing it 12 is present, the pressure on the actuating part 12 is reduced so that the striking plate 4 engages in the grid 36 and thus prevents the cutter 2 with its insertion end 3 from being pulled out of the interior 11 of the box 1 again. The box lock is now locked.

Zum Entriegeln des Kastenschlosss wird der Betätigungsteil 12 wieder in Richtung auf den Festteil 16 herabgedrückt, bis die Erhöhung 35 aus der Öffnung 5 der Öffnung 5 herausgezogen werden kann. Nunmehr gleitet der aus der Öffnung 5 herausgezogene Schnepper 2 aus dem Kasten 1 heraus und wird dabei von der Erhöhung 28 durch das Schließblech 4 hindurchgeführt.To unlock the box lock, the actuating part 12 is pressed down again in the direction of the fixed part 16 until the elevation 35 can be pulled out of the opening 5 of the opening 5. Now the cutter 2 pulled out of the opening 5 slides out of the box 1 and is guided through the striking plate 4 by the elevation 28.

Statt der Einbuchtung 26 kann die Oberseite 25 des Schneppers 2 auch etwa parallel zur Unterkante 22 des Festteils 16 verlaufend ausgebildet sein. Entscheidend ist lediglich, daß am Einsteckende 3 eine biegesteife Einheit 15 vorgesehen ist. Diese Einheit 15 wird von einer Materialansammlung gebildet, von der aus der Querschnitt der Zunge 13 drastisch in Richtung auf den Schlitz 24 vermindert werden kann. Diese Verminderung kann entweder stetig von der Erhöhung 28 in Richtung auf die Einbuchtung 26 vorgenommen werden. Es ist jedoch auch möglich, die Verminderung unstetig vorzunehmen, wobei allerdings dafür gesorgt sein muß, daß die auftretende Biegespannungen nicht an einer sich etwa ausbildenden Ecke einen Dauerbruch erzeugen können.Instead of the indentation 26, the upper side 25 of the cutter 2 can also be designed to run approximately parallel to the lower edge 22 of the fixed part 16. The only decisive factor is that a rigid unit 15 is provided at the insertion end 3. This unit 15 is formed by a material accumulation from which the cross section of the tongue 13 can be drastically reduced in the direction of the slot 24. This reduction can either be carried out continuously from the elevation 28 in the direction of the indentation 26. However, it is also possible to carry out the reduction discontinuously, although care must be taken to ensure that the bending stresses that occur cannot cause a permanent fracture at a corner that is being formed.

Darüber hinaus ist es möglich, daß die federnde Zunge 13 mit vermindertem Querschnitt in das Raster 36 einmündet. Es ist jedoch auch möglich, an dieser Stelle eine Erhöhung 35 auszubilden, zu der die federnde Zunge 13 stetig oder unstetig aufsteigen kann.In addition, it is possible that the resilient tongue 13 opens into the grid 36 with a reduced cross section. However, it is also possible at this point form an elevation 35 to which the resilient tongue 13 can rise steadily or discontinuously.

Schließlich ist es denkbar, den Grund 39 des Rasters 36 glatt auszubilden. Es ist jedoch auch möglich, stattdessen im Grund 39 Löcher vorzusehen, die in Richtung auf den Schlitz 24 ragen. In diese Löcher können entsprechende am Schließblech 4 vorzusehende Vorsprünge hineinragen, von denen die entsprechenden Löcher abgezogen werden, wenn die Feder 13 durch Druck auf den Betätigungsteil 12 in Richtung auf den Schlitz 24 verformt wird.Finally, it is conceivable to make the base 39 of the grid 36 smooth. However, it is also possible instead to provide 39 holes in the base which protrude in the direction of the slot 24. Corresponding projections to be provided on the striking plate 4 can protrude into these holes, from which the corresponding holes are pulled off when the spring 13 is deformed in the direction of the slot 24 by pressure on the actuating part 12.

Das Einsteckende 3 kann in beliebiger Weise ausgestaltet werden, solange dafür gesorgt ist, daß die Einheit 15 biegesteif ist. Beispielsweise kann sowohl die Erhöhung 28 als auch der Vorbau 32 fehlen. Diese erleichtern jeweils nur das Einstecken des Einsteckendes 3 in die Öffnung 5.The insertion end 3 can be designed in any way, as long as it is ensured that the unit 15 is rigid. For example, the elevation 28 as well as the stem 32 may be missing. These only make it easier to insert the insertion end 3 into the opening 5.

Der Schnepper 2 wird im Gußverfahren hergestellt. Auf diese Weise erhält er einen gleichmäßig homogenen Aufbau, der insbesondere im Bereich des Einsteckendes 3 von großer Wichtigkeit ist. Als Material zur Herstellung sowohl des Kastens 1 als auch des Schneppers 2 kommen bevorzugt Edelmetalle in Betracht. Es ist jedoch auch möglich andere Metalle zu verwenden. Je nach dem verwendeten Metall wird der gesamte Schnepper 2 eine Wärmebehandlung unterzogen. Insbesondere kommt eine Abschreckung des Einsteckendes 3 und der Zunge 13 in Betracht.The cutter 2 is manufactured using the casting process. In this way, it obtains a uniformly homogeneous structure, which is of great importance particularly in the area of the insertion end 3. Preference is given to precious metals as the material for producing both the box 1 and the cutter 2. However, it is also possible to use other metals. Depending on the metal used, the entire cutter 2 is subjected to a heat treatment. In particular, the insertion end 3 and the tongue 13 can be deterred.

Claims (8)

  1. A box lock for items of jewellery comprising a box (1) and a latch (2) which projects into the box (1) with an insertion end (3) and engages into the lock plate (4) thereof with a tongue (13) which is springy relative to a fixed portion (16) and which is provided with an actuating portion (12) at its rear end which is remote from the insertion end (3), characterised in that the box (1) and the latch (2) comprise a cast material and the latch (2) has a cast fixed front end (32) from which a springy tongue (13) extends parallel to the fixed portion (16) and towards the actuating portion (12), the tongue (13) being of a cross section which initially decreases and then increases again, starting from the front end (32) towards the actuating portion (12), and the tongue (13) being unstressed in the engaged condition.
  2. A box lock according to claim 1 characterised in that the cast material is of uniformly homogeneous nature
  3. A box lock according to claim 1 and claim 2 characterised in that the cast material is quenched at a predetermined temperature.
  4. A box lock according to claims 1 to 3 characterised in that a slit (24) is provided between the fixed portion (16) and the springy tongue (13) to provide for the spring travel of the tongue (13).
  5. A box lock according to claims 1 to 4 characterised in that provided on the spring (13) is a retaining means (36) which accommodates the lock plate (4) and which is in the form of a groove adapted to the thickness of the lock plate (4), the groove extending before the actuating portion (12) transversely relative to a longitudinal axis which extends towards the insertion end (3) and the groove engaging into an opening (5) in the lock plate (4) through which the tongue (13) passes towards the insertion end (3) as far as the actuating portion (12), the cross section of the opening (5) in the lock plate being adapted to a raised portion (28) at the insertion end (3).
  6. A box lock according to claims 1 to 5 characterised in that the retaining means (36) is defined on its side towards the insertion end (3) by a raised portion (35) whose upper edge is at a spacing from a lower edge (22) which defines the fixed portion (16) on its underside which is remote from the tongue (13), wherein in the unstressed condition of the tongue (13) said spacing is greater than an internal width of the opening (5) which is provided for receiving the latch (27 in the lock plate (4) and said spacing is smaller than said internal width of the opening (5) under the influence of pressing forces applied to the tongue (13).
  7. A box lock according to claim 1 to 7, characterised in that it is provided between the raised portion (35) and a ground (39) of the retaining means (36), which takes up the lock plate (4), with a hight for the retaining means, which is like the clear hight of the slit (24).
  8. A box lock according to claim 1 to 7, characterised in that the cross-section of the actuating portion (12) is like that of the box (1).
EP85105615A 1985-05-08 1985-05-08 Snap fastening Expired - Lifetime EP0200799B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DE8585105615T DE3585371D1 (en) 1985-05-08 1985-05-08 BOX LOCK.
EP85105615A EP0200799B1 (en) 1985-05-08 1985-05-08 Snap fastening
AT85105615T ATE72383T1 (en) 1985-05-08 1985-05-08 BOX LOCK.
US06/785,890 US4667378A (en) 1985-05-08 1985-10-09 Clasp lock

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP85105615A EP0200799B1 (en) 1985-05-08 1985-05-08 Snap fastening

Publications (2)

Publication Number Publication Date
EP0200799A1 EP0200799A1 (en) 1986-11-12
EP0200799B1 true EP0200799B1 (en) 1992-02-05

Family

ID=8193485

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85105615A Expired - Lifetime EP0200799B1 (en) 1985-05-08 1985-05-08 Snap fastening

Country Status (4)

Country Link
US (1) US4667378A (en)
EP (1) EP0200799B1 (en)
AT (1) ATE72383T1 (en)
DE (1) DE3585371D1 (en)

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IT1230355B (en) * 1989-07-14 1991-10-18 G T Di Giuseppe Tibiletti & C METHOD FOR OBTAINING SEALS, IN PARTICULAR FOR LABELS OF CLOTHING, AND SEALING ACCORDING TO SUCH METHOD.
US5309616A (en) * 1991-06-26 1994-05-10 Do-All J.M.C. Inc. Method of making a catch for jewelry clasp
FR2679741B1 (en) * 1991-08-01 1993-11-19 Charles Ballenegger CLASP FOR PEARL CHAIN.
FR2688834B1 (en) * 1992-03-19 1995-08-04 Cartier Int Bv FASTENING MECHANISM WITH QUICK LOCKING AND UNLOCKING.
US5416954A (en) * 1993-03-19 1995-05-23 Nei/Do-All Corporation Flexible fastener member having distributed spring action area
JP3764786B2 (en) * 1996-10-30 2006-04-12 株式会社セベル・ピコ Fasteners for jewelry
US5933923A (en) * 1997-02-13 1999-08-10 Tatra Corporation Buckle for cargo control strap
US6134917A (en) * 1997-03-21 2000-10-24 Kohl; Thomas D. Jewelry retention system
US6138475A (en) * 1997-06-19 2000-10-31 Kohl; Thomas D. Jewelry retention system
US6167725B1 (en) * 1997-06-26 2001-01-02 Neometal, Inc. Threadless jewelry connector assembly
US20100000256A1 (en) * 2008-07-03 2010-01-07 Continental Jewelry (Usa) Inc. Locking device
US8196267B2 (en) * 2009-11-11 2012-06-12 Trueposition, Inc. Assistance required locking clasp
US20130152631A1 (en) * 2011-11-29 2013-06-20 Steve Hyppolite Toy Bracelet Unit With Detachable Wristband And Interchangeable Key
US10772627B2 (en) * 2014-12-11 2020-09-15 Covidien Lp Stapler with auto-matic lockout mechanism
USD890013S1 (en) * 2018-05-29 2020-07-14 Virgil Abloh Jewelry item

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Also Published As

Publication number Publication date
ATE72383T1 (en) 1992-02-15
DE3585371D1 (en) 1992-03-19
US4667378A (en) 1987-05-26
EP0200799A1 (en) 1986-11-12

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