EP2803790A2 - Clé destinée à actionner une serrure cylindrique - Google Patents

Clé destinée à actionner une serrure cylindrique Download PDF

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Publication number
EP2803790A2
EP2803790A2 EP14450025.3A EP14450025A EP2803790A2 EP 2803790 A2 EP2803790 A2 EP 2803790A2 EP 14450025 A EP14450025 A EP 14450025A EP 2803790 A2 EP2803790 A2 EP 2803790A2
Authority
EP
European Patent Office
Prior art keywords
key
key according
hard plastic
shaft
lock cylinder
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Withdrawn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
EP14450025.3A
Other languages
German (de)
English (en)
Other versions
EP2803790A3 (fr
Inventor
Kristijan Davidovac
Reinhard Amon
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.)
EVVA Sicherheitstechnologie GmbH
Original Assignee
EVVA Sicherheitstechnologie GmbH
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 EVVA Sicherheitstechnologie GmbH filed Critical EVVA Sicherheitstechnologie GmbH
Publication of EP2803790A2 publication Critical patent/EP2803790A2/fr
Publication of EP2803790A3 publication Critical patent/EP2803790A3/fr
Withdrawn legal-status Critical Current

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Classifications

    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/26—Use of special materials for keys
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B15/00—Other details of locks; Parts for engagement by bolts of fastening devices
    • E05B15/16—Use of special materials for parts of locks
    • E05B15/1635—Use of special materials for parts of locks of plastics materials
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B19/00—Keys; Accessories therefor
    • E05B19/04—Construction of the bow or head of the key; Attaching the bow to the shank

Definitions

  • the invention relates to a key for actuating a lock cylinder comprising a Reide and a shaft with a mechanically and / or magnetically scannable coding, wherein the shaft has a stop the insertion of the shaft into the keyway of the lock cylinder stop.
  • Keys of the type mentioned above are usually made of metal.
  • the production of a metal key is very complex due to the many process steps that are required to provide the key with the respective individual mechanical and / or magnetic coding.
  • a mechanically scannable coding having key is usually from a blank, which already has a cross-sectional profile, which is adapted to the shape of the associated keyway of the lock cylinder.
  • a mechanical key has at one or two opposite edges of the key shank a plurality of successive projections and recesses with the projections respectively associated control edges, which are used to actuate blocking elements, such as e.g. Pin tumblers of a shooting cylinder are formed.
  • elevations and depressions are formed on the blank by means of a milling tool.
  • the reide of the key must still be edited in order to introduce markings, such as coding numbers or brand names, by embossing or the like.
  • a post-processing is required, for example, to avoid sharp edges.
  • the key shank has a stop, which is usually designed as a projection, which limits the insertability of the shank into the key channel of the associated lock cylinder and thereby the relative position of the mechanical or magnetic Coding of the key to the sensing elements of the lock cylinder determines.
  • the key shank In the area of the attack, the key shank usually goes overboard, with load tests by attaching a torque in the key inserted in the key channel showing that after the attack due to the notch effect, the highest stresses arise. This point therefore represents the weak point of the key, which leads to the abortion of the key in the event of violence.
  • the present invention therefore aims to increase the load capacity of the key to prevent breakage.
  • the invention provides for a key of the type mentioned that a material removal is formed on the inner edge bounding the stop.
  • the removal of material may in this case be designed in the manner of an undercut and reduces the otherwise occurring due to the sharp-edged transition to the shoulder of the attack voltage spikes. It has been found that only the inventively provided material removal in the sense of an undercut leads to an increase in the load capacity in the above-mentioned load tests, whereas a rounding of the sharp-edged inner edge does not lead to the desired reduction of voltage spikes.
  • the removal of material on the inner edge can take place in the longitudinal direction of the key shaft or perpendicular to it, whereby a combination is possible.
  • the best results have been obtained if, as is the case with a preferred development, the removal of material takes place only in the longitudinal direction of the shaft.
  • the notch effect can be reduced in a preferred embodiment, in particular if the material removal has a curved contour.
  • the curvature has a radius of 0.2-0.5 mm.
  • the improvement of the load capacity of the key caused by the invention is basically independent of the material of the key.
  • conventional keys are usually made of metal, especially nickel silver, a copper-nickel-zinc alloy.
  • metal keys have proven very useful, in addition to the complex and costly production, they have a number of other disadvantages.
  • Metal keys have a high weight and can trigger allergies especially in the case of a nickel containing material.
  • the profiling of the keys is subject to certain limitations due to the manufacturing process, so that the number of coding possibilities is low.
  • a colored design of metal keys is limited. The color of the metal can hardly be influenced. A color design is possible only by applying a paint, which is naturally subject to high wear.
  • Plastic keys have not prevailed despite various proposals for stiffening the key body in practice. Plastic keys are therefore carried out only as a toy key or possibly as a reserve key, which are carried in a check card-like holder and are used only in an emergency to lock a lock.
  • the key Due to the inventive design of the key on the key stop the resilience of the key, however, is improved so far that the key, as this corresponds to a preferred embodiment, consists of a hard plastic or is made of a hard plastic blank.
  • a particularly suitable plastic here is a hard plastic from the group of polyimides.
  • Polyimides are high-performance plastics whose most important structural feature is the imide group.
  • the polyimides include, for example, polyetherimides and polyamide-imides, which are shown in experiments has particular preference for polyetherimides for use in key production.
  • Polyimides are generally characterized by high mechanical strength, high chemical resistance and high temperature resistance. Polyetherimide meets the typical requirements for keys such as high strength, low abrasion and high temperature resistance.
  • polyetherimides are also to be regarded as preferred in particular because, in contrast to other polyimides, they can be processed by injection molding. This reduces the manufacturing costs and the corresponding costs.
  • the Reide and the key shank made of the same hard plastic, in particular polyetherimide, wherein the key shank and the Reide are preferably formed integrally with each other.
  • the entire key can thus preferably be produced in a single work step, in which connection preferably an injection molding process is used. If, as corresponds to a preferred development, the key or the blank made entirely of a hard plastic, the corresponding part or the entire key can be made in one piece and from a single plastic component by injection molding. If different parts of the key are to consist of different plastics, it is possible to proceed in such a way that a two- or multi-component injection molding process is used.
  • the use of two or more types of plastic may be advantageous, for example, when the Reide is to be coated with a softer material in comparison with the hard plastic, in particular polyetherimide, in order to improve the feel.
  • the hard plastic is mixed with a filler in at least one subregion of the key shaft.
  • the filler may preferably be ferromagnetic, so that a magnetic coding can take place in said at least one subregion.
  • the magnetic coding can be individualized in particular by the fact that the magnetic properties of said subregion depend on the volume fraction or the absolute amount of the ferromagnetic filler in the hard plastic.
  • the key body is made of the hard plastic, in particular polyetherimide and provided on the surface with a thin metal layer (for example 10-100 microns), in particular vapor-deposited.
  • the key has at least one magnetic or electronic coding component.
  • the said component can be embedded in the hard plastic of the key shaft or the Reide or be completely enclosed by the hard plastic.
  • the magnetic or electronic coding component is a microchip.
  • the microchip may be formed in a particularly preferred manner as an RFID transponder.
  • an embodiment in which the microchip operates passively that is, is particularly advantageous. without a separate power source.
  • a passive RFID transponder is preferred in this context.
  • the magnetic or electronic coding serving Component comprises a permanent magnetizable material, in particular samarium cobalt.
  • a component made of permanently magnetisable material is used, for example, in so-called magnetic locks, in which the locking elements of the lock cylinder comprise magnet rotors whose rotational position can be changed by magnetic forces resulting from said permanently magnetizable material, such as samarium cobalt inserts.
  • the integration of the component serving for magnetic or electronic coding into the key takes place, with particular preference in terms of production technology, by virtue of the fact that said component is inserted into the injection mold before injection molding.
  • the said component is encapsulated during the injection molding or embedded in the key body produced by the injection molding.
  • the injection mold may preferably be developed in such a way that during injection molding in the same working step the markings usually provided in the region of the Reide, such as e.g. a brand name or a coding identification.
  • the material properties can preferably be further improved by the fact that the hard plastic, in particular polyetherimide, is fiber-reinforced, with reinforcement preferably carbon and / or or glass fibers are used.
  • the fiber reinforcement serves in particular to increase the torsional and bending stiffness of the key body.
  • the fiber-reinforced hard plastic, in particular the fiber-reinforced polyetherimide has a fiber content of 5-40, preferably 20-35 vol .-% based on the hard plastic.
  • a preferred embodiment provides that the fibers are in the same orientation state.
  • FIG.1 a key with a mechanically scannable profile
  • FIG.1 a view of the detail X of the key according to Fig.1 in the area of the key stop in various embodiments
  • Figure 5 an injection mold for producing a key according to Fig.1 ,
  • Fig.1 shows a key 1 with a Reide 2 and a key shank 3.
  • the key shank 3 has a plurality of the cross-sectional profile of the key 1 defining longitudinal grooves 4 and a key bit with a plurality of recesses and elevations having profiling 5.
  • the key shank 3 also has a stop 6, which cooperates with a counter-stop in the lock cylinder and defines the maximum insertion depth of the key shaft 3 in the keyway of the associated lock cylinder.
  • the in Fig.1 The key shown is manufactured in one piece in an injection molding process and consists entirely of fiber-reinforced polyetherimide.
  • the injection mold for producing the key 1 is in Fig. 5 shown.
  • Fig.2 shows an enlarged view of the key in the region of the stop 6.
  • the inner edge 7 of the stopper 6 is shown in the case of a sharp-edged embodiment according to the prior art.
  • a material removal formed with a curved contour 8 so that a recess in the manner of an undercut arises.
  • the stop 6 itself has, starting from the abutment surface 12, a first region 13 with a rounded, outwardly curved contour and an adjoining region 11 with a continuously decreasing extent in the direction of the reide 2.
  • the material removal is made only in the longitudinal direction 9.
  • the curved contour 8 has a radius of curvature of 0.2 mm.
  • the curved contour 8 has a radius of curvature of 0.5 mm.
  • the material removal is also made both in the longitudinal direction 9 and vertically (arrow 10) thereto.
  • the curved contour 8 has the shape of a 3/4 circle and has a radius of curvature of 0.5 mm.
  • Fig. 5 is the injection mold 14 of an injection molding tool, not shown schematically.
  • the injection mold 14 comprises two mold halves delimiting a cavity.
  • the cavity has the shape of in Fig. 5 denoted by 15, counterparts arranged key.
  • the two mold halves may be separated from one another along a plane of separation in the plane of the drawing to release the interior of the mold 14 for removal of the injection-molded key.
  • Figure 5 shows the position of the mold images in the mold 14 and the course of the sprue 16.

Landscapes

  • Injection Moulding Of Plastics Or The Like (AREA)
  • Lock And Its Accessories (AREA)
  • Mutual Connection Of Rods And Tubes (AREA)
  • Clamps And Clips (AREA)
EP14450025.3A 2013-05-14 2014-05-08 Clé destinée à actionner une serrure cylindrique Withdrawn EP2803790A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
ATA396/2013A AT514508A1 (de) 2013-05-14 2013-05-14 Schlüssel zum Betätigen eines Schließzylinders

Publications (2)

Publication Number Publication Date
EP2803790A2 true EP2803790A2 (fr) 2014-11-19
EP2803790A3 EP2803790A3 (fr) 2016-05-04

Family

ID=50841728

Family Applications (1)

Application Number Title Priority Date Filing Date
EP14450025.3A Withdrawn EP2803790A3 (fr) 2013-05-14 2014-05-08 Clé destinée à actionner une serrure cylindrique

Country Status (2)

Country Link
EP (1) EP2803790A3 (fr)
AT (1) AT514508A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112381972A (zh) * 2020-11-10 2021-02-19 珠海优特电力科技股份有限公司 作业位置的确认方法及装置、存储介质、电子装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305588A2 (fr) 1987-09-03 1989-03-08 Axxess Entry Technologies Tige de la clé en plastique renforcée

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH495488A (de) * 1967-08-15 1970-08-31 Dana Eugene Schlüssel sowie Verfahren zu seiner Herstellung
DE2623539C3 (de) * 1976-05-26 1980-06-26 Neiman Gmbh & Co Kg, 5657 Haan Schließzylinder mit Flachschlüssel
IT7823336U1 (it) * 1978-11-20 1980-05-20 Silca Spa Struttura di chiave con impugnatura ricoperta.
DE3518354A1 (de) * 1985-05-22 1986-11-27 Heinrich Winkelhard GmbH & Co KG Plastik- u. Metallwarenfabrik, 4708 Kamen Verfahren zur herstellung von schluesseln oder von schluesselrohlingen fuer schloesser
ATA150086A (de) * 1986-06-03 1987-04-15 Klausser Konrad Drehzylinderschlossschluessel
JP2010236194A (ja) * 2009-03-30 2010-10-21 Denso Corp 電子キーシステムの携帯機、エマージェンシーキー
WO2011038372A1 (fr) * 2009-09-25 2011-03-31 Keyport, Inc. Ensemble outil standardisé pour organiseur universel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0305588A2 (fr) 1987-09-03 1989-03-08 Axxess Entry Technologies Tige de la clé en plastique renforcée

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112381972A (zh) * 2020-11-10 2021-02-19 珠海优特电力科技股份有限公司 作业位置的确认方法及装置、存储介质、电子装置

Also Published As

Publication number Publication date
AT514508A1 (de) 2015-01-15
EP2803790A3 (fr) 2016-05-04

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