EP2093355B1 - Clé avec une tige améliorée - Google Patents

Clé avec une tige améliorée Download PDF

Info

Publication number
EP2093355B1
EP2093355B1 EP09152509.7A EP09152509A EP2093355B1 EP 2093355 B1 EP2093355 B1 EP 2093355B1 EP 09152509 A EP09152509 A EP 09152509A EP 2093355 B1 EP2093355 B1 EP 2093355B1
Authority
EP
European Patent Office
Prior art keywords
key
shank
wrapping
sheath
tumbler
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.)
Not-in-force
Application number
EP09152509.7A
Other languages
German (de)
English (en)
Other versions
EP2093355A1 (fr
Inventor
Lars Lundberg
Hans-Rainer Speckamp
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.)
Dorma Deutschland GmbH
Original Assignee
Dorma Deutschland 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 Dorma Deutschland GmbH filed Critical Dorma Deutschland GmbH
Publication of EP2093355A1 publication Critical patent/EP2093355A1/fr
Application granted granted Critical
Publication of EP2093355B1 publication Critical patent/EP2093355B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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

Definitions

  • the present invention relates to a key for the closure of a lock, in particular a tumbler lock.
  • the key is embodied as a tumbler key comprising a key body having a key shank extending along a shank axis and a reide at a first end of the key shank and a key bit at or near the second end of the key shank, the key shank encased in a sheath that extends concentrically about the shaft axis along the entire length from the first end to the second end of the key shank.
  • a tumbler corresponds to a very simple embodiment of a key, which usually has a cylindrical shank, which may be referred to as a key shank or as a key axis.
  • These types of keys are assigned to so-called tumbler locks, which have no cylinder that can be rotated within a cylinder housing.
  • the tumbler has a hole into which the key must be inserted, with rotational movement between the key shank and a guide structure within the tumbler lock.
  • the key body has a key shank extending along a shank axis, the key shank terminating in a recess at the first end and having at least one key bit at the opposite end of the recess of the key shank.
  • the key bit may be located at the end of the key shaft or at least near the end along the shaft axis.
  • the key shank has a round cross-section to a rotational movement to allow when the key is inserted in the tumbler lock.
  • the key bit has a leaf-like shape, which may have a special structure for the closure, in order to achieve the assignment to a corresponding lock, wherein the Reide also has a flat shape.
  • Both the key bit and the reide are integrally formed with the key shank, the key body comprising the key shank, the reide and the key bit, and is usually made of a steel material.
  • tumbler key Due to the flat design of the key bit and the Reide on the one hand and the circular cross-sectional shape of the key shank on the other hand, the production of such a tumbler key is very expensive. Usually, the key body must be made by a casting process or by a forging process. In conjunction with both methods, at least one further production step is necessary. The additional manufacturing step may involve a machining process such as milling or at least additional calibration by a punching operation. Another disadvantage is the weight of such a tumbler key having a body with a completely steel cross-sectional area of the key shank. Therefore, tumbler keys can be made with a hollow shaped key shank, with such shank shapes requiring at least one further manufacturing step.
  • the perception of quality by the customer such tumbler keys is disadvantageously not very high.
  • the cylinder housings of the tumbler locks are made of a steel material, resulting in a metal-to-metal pairing when the tumbler key is inserted into the cylinder housing. This leads to unwanted noise and can also lead to a jamming.
  • GB 854 868 A is a generic key for the closure of a lock, in particular a tumbler, known, the key is designed as a tumbler, comprising a key body with a key shank which extends along a shaft axis and at a first end of the key shaft and a Reide on or near the second end of the key shank has a key bit, wherein the key shank is enclosed in a sheath which extends concentrically around the shank axis.
  • the DE 20 37 071 A1 discloses another key for the closure of a tumbler lock.
  • the key is designed as a tumbler key, comprising a key body with a key shank having a beard at a first end and a twist grip at a second end.
  • the key shank, the beard and the turning handle are made of a plastic, wherein in the thus formed body, a reinforcement is incorporated.
  • the inserted into a lock part of the key, that is, the beard and the lower portion of the shaft, are coated with a metal layer, which is to allow wear resistance.
  • the key shank has a rotation guide structure that results in a rotation guide effect when the key is turned around inside the tumbler key.
  • the rotary guide structure in this case has two protruding out of the sheath projections, which are arranged in the sheet metal material of the key shank in opposite position.
  • the projections correspond to a type of lugs or protuberances formed by a corresponding shear cut die when the key body is produced by a punching stroke.
  • the projections penetrate out of the plastic jacket to allow metal-to-metal mating to form the pivotal guide.
  • the projections form a kind of bearing in an annular receptacle within the housing of the lock.
  • the key When the key is inserted into the tumbler, the key must be a keyed bearing.
  • the key must be rotatable in the housing of the lock, with high accuracies are required to ensure accurate interaction between the key bit and the lock mechanism.
  • the accuracies are in the range of a few tenths of a millimeter. Consequently, a rotary guide structure is necessary because a simple guide between the casing and the cylinder housing is not sufficient to achieve the required accuracies.
  • the sheath encloses the key shank, the sheath being formed along the entire length of the key shank.
  • the tumbler key comprises a leaflike reid and a leaflike key bit, the key shank having a circular cross-sectional area.
  • the tumbler key has various cross-sectional shapes, the manufacture of the key can be accomplished in very simple steps.
  • the key body may be provided by a simple flat metal part having a constant thickness with respect to the key shaft, the key bit and the reide. Only when the sheath is mounted to surround the key shank, the key shank receives a circular cross-section.
  • the sheath extends along the entire length of the key shank from the first to the second end, thus thus a metal-metal pairing can be avoided when the tumbler key is inserted into the lock. Therefore, the sheath does not have any metallic material.
  • the sheath is produced by an injection molding process, wherein the injection molding process is designed as a casting process.
  • Injection molding is also referred to as molding, which means a molding process in an injection mold.
  • the sheath may consist of an injection-moldable material which is sprayed onto the key shank.
  • the key shank In order to enable a casting process, in a first step, the key shank must be inserted into the injection mold in order to inject the material of the sheathing in a subsequent step.
  • This technique results in a component having a combination of materials, especially when the injection molded material of the sheath has a positive fit with the key body.
  • the injection molding process is an inexpensive manufacturing technique compared to metal forming processes such as forging. Therefore, the tumbler key according to the present invention can be manufactured by cost-minimized steps, whereby the consumer can obtain the perception of high quality.
  • the key bit extends out of the sheath.
  • the sheath completely encloses the key shank, resulting in passage of the key bit through the shroud at or near the second end of the key shank which is inserted into the lock. Therefore, the key bit has no shroud, since the key bit must interact with the locking mechanism of the tumbler.
  • the mold for casting the sheath onto the key shank is sealed in the transition area between the key shank and the shank to prevent the material of the sheath from being deposited on the shank Avoid surface of the key bit. In the same way, the Reide the tumbler key is sealed against the material of the sheath, while the key body is inserted within the mold and the material of the sheath is injected into the cavity.
  • the key body has a transition region between the key shank and the reide, with the sheath extending to the transition region.
  • the transitional area is at the end of the key shaft, where the key shaft merges into the reide of the key.
  • the mold seals the reide to prevent the formation of cladding material on the surface of the reide. It should be noted, however, that the key bit and / or the Reide of the key body can also be enclosed with a sheath, as the sheath of the key shank.
  • the Reide can be enclosed by a sheath, wherein the sheath can be the same sheath as the sheath of the key shank, or the Reide is sheathed with a sheath material, which has, for example, a different kind or a different color of the material.
  • the key body comprises a sheet metal material such as bronze material, nickel silver material or steel material, wherein the key body is made by a metal cutting method such as a punching method.
  • a sheet metal material such as bronze material, nickel silver material or steel material
  • metal cutting method such as a punching method.
  • Metal stamping methods are known as low cost mass production methods wherein the key body comprising the key shaft, the reide and the key bit, can be stamped in one stroke. Consequently, the key body can open be made very inexpensive manner, wherein the sheath, which is provided by an injection molding process, represents a way of completing the Zunoss banls. Sharp edges, which can arise through the shear cutting process, are covered by the sheathing.
  • the sheath is formed as a plastic sheath or as a rubber sheath, wherein the plastic sheath comprises a plastic material such as polyamide (PA), polyoxymethylene (POM) or polypropylene (PP).
  • PA polyamide
  • POM polyoxymethylene
  • PP polypropylene
  • the present invention is not limited to these materials of the sheath, since other materials are suitable for injection molding.
  • more than one rotary guide structure may be formed in the key shank around which Accuracy of the rotational movement of the tumbler key within the housing of the tumbler to improve.
  • the sheet thickness of the key body is 1 mm to 5 mm, preferably 2 mm to 4 mm and particularly preferably 3 mm.
  • the thickness of the key body corresponds to the thickness of the sheet material or the strip material used to punch out the key body.
  • the sheet material from which the key shank is formed has transverse bores extending perpendicular to the shank axis. Through this cross holes a positive connection of the sheath with the key shank is made possible, wherein the material passes through the injection molding process in the transverse bores. The transverse bores avoid loosening of the shroud since the shroud material penetrates through the transverse bores and the shroud can not be lost.
  • the key body has a roughened surface in order to improve the adhesion between the key body and the sheath.
  • the roughened surface can be replaced by a Embossing process, a sandblast process or, for example, be prepared by a rolling process.
  • the cross section of the sheath can be designed as a circular cross section and have a diameter of 3 mm to 7 mm, preferably from 4 mm to 6 mm and particularly preferably 5 mm.
  • the diameter of the sheath is greater than the width of the key shank to allow a circular cross-section of the sheath.
  • FIG. 1 shows an embodiment of a key.
  • the key 1 has a key shank 2, which extends along a key axis 3.
  • the key shank 2 is made of a sheet metal material by a metal cutting method such as a punching method.
  • a Reide 4 is formed, through which the key 1 can be gripped.
  • a key bit 5 is formed to cooperate with the locking mechanism within the housing of the tumbler lock.
  • the key bit 5 is exemplified, and may be formed with a specific shape.
  • the key shank 2 is enclosed by a sheath 6 which extends concentrically with the key axis 3 along the entire length of the key shank 2 from the first end to the second end.
  • the sheath 6 extends to a transition region 7 between the key shank 2 and the Reide 4. With respect to the key bit 5, the sheath 6 does not extend over the entire key bit 5, so that the key bit 5 protrudes from the sheath 6.
  • the sheath 6 is designed as a rubber or plastic sheath, wherein the synthetic material may comprise a plastic material such as polyamide (PA), polyoxymethylene (POM) or polypropylene (PP).
  • PA polyamide
  • POM polyoxymethylene
  • PP polypropylene
  • the material of the key body may consist of a bronze material, a nickel silver material or a steel material.
  • transverse bores 9 are punched into the key shank 2.
  • the transverse bores 9 extend along a bore axis, which is arranged perpendicular to the shaft axis 3.
  • the transverse bores 9 are punched into the key body, with five holes being provided.
  • FIG. 2 shows an inventive embodiment of the key 1 with a rotary guide structure.
  • the rotation guide structure 8 is formed by protrusions 10 formed in the sheet metal material of the key shank 2 in opposite positions. Consequently, the key body of the key 1 has a key shank 2 which extends along the key axis 3, two protrusions 10 being formed near the reide 4 and the key bit 5 and forming an additional molding of the key body, which is produced by a metal cutting method such as a die punching method. is made.
  • the transverse bores 9 are introduced into the sheet material. These features can be made in one stroke or in multiple strokes punched by successive steps.
  • the present invention is not limited to the embodiment described above, which is merely an example and may be modified in various ways within the scope indicated by the subclaims. Therefore, the present invention is also applicable to keys 1 comprising a shell 6 which extends over the entire key body with the reide 4 and the key bit 5 or which has interruptions along the shaft axis 3.

Landscapes

  • Lock And Its Accessories (AREA)
  • Supports Or Holders For Household Use (AREA)

Claims (10)

  1. Clé (1) pour le verrouillage d'une serrure, tout particulièrement une serrure à gâchette, la clé (1) étant aménagée comme clé à gâchette, comprenant un corps de clé avec une tige de clé (2), laquelle s'étend le long d'un axe de tige (3) et présente un anneaux (4) sur une première extrémité de la tige de clé (2) et présente un panneton de clé (5) sur ou tout près de la deuxième extrémité de la tige de clé (2),
    la tige de clé (2) étant enveloppée dans un enrobage (6), lequel s'étend concentriquement autour de l'axe de tige (3) le long de toute la longueur depuis la première extrémité vers la deuxième extrémité de la tige de clé (2),
    caractérisée en ce que
    la tige de clé (2) présente une structure de rotation guidée (8), qui cause un effet de rotation guidée lorsque la clé (1) est tournée au sein de la serrure à gâchette,
    et en ce que la structure de rotation guidée (8) présente deux projections (10) projetant depuis l'enrobage, lesquelles sont agencées dans le matériau de tôle métallique de la tige de clé (2) en position l'une en face de l'autre.
  2. Clé (1) selon la revendication 1, caractérisée en ce que l'enrobage (6) est fabriqué dans un procédé de moulage par injection, le procédé de moulage par injection étant aménagé comme procédé de surmoulage par injection.
  3. Clé (1) selon la revendication 1 ou 2, caractérisée en ce que le panneton de clé (5) fait saillie de l'enrobage (6).
  4. Clé selon l'une des revendications 1 à 3, caractérisée en ce que le corps de clé présentant une région de transition (7) entre la tige de clé (2) et l'anneau de clé (4), l'enrobage (6) s'étendant jusque vers la région de transition (7).
  5. Clé (1) selon l'une des revendications mentionnées ci-avant, caractérisée en ce que le corps de clé présente un matériau de tôle métallique comme par exemple du matériau de bronze, du maillechort ou métal d'acier, le corps de clé étant fabriqué dans un procédé de cisaillement par découpe de métal comme un procédé d'étampage.
  6. Clé (1) selon la revendication 5, caractérisée en ce que l'enrobage (6) est aménagé comme enrobage en matière plastique ou comme enrobage en caoutchouc, l'enrobage en matière plastique (6) comprenant une matière plastique comme du polyamide (PA), polyoxyméthylène (POM) ou polypropylène (PP).
  7. Clé (1) selon l'une des revendications mentionnées ci-avant, caractérisée en ce que l'épaisseur de tôle du corps de clé est de 1 mm à 5 mm, de préférence de 2 mm à 4 mm, et tout particulièrement de 3 mm.
  8. Clé (1) selon l'une des revendications mentionnées ci-avant, caractérisée en ce que le matériau de tôle dont la tige de clé (2) est faite, présente des perçages transversaux (9) qui s'étendent verticalement par rapport à l'axe de tige (3) pour créer une connexion par la forme de l'enrobage (6), le matériau de l'enrobage (6) aboutissant dans les perçages transversaux (9) par le procédé de moulage par injection.
  9. Clé (1) selon l'une des revendications mentionnées ci-avant, caractérisée en ce que l'enrobage (6) présente une coupe transversale circulaire avec un diamètre de 2 mm à 6 mm, de préférence de 3 mm à 5 mm, et tout particulièrement de 4 mm.
  10. Clé (1) selon l'une des revendications mentionnées ci-avant, caractérisée en ce que la tige de clé (2) présente une surface rendue rugueuse pour créer une meilleure adhérence entre le corps de clé et l'enrobage (6).
EP09152509.7A 2008-02-20 2009-02-11 Clé avec une tige améliorée Not-in-force EP2093355B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200810010164 DE102008010164A1 (de) 2008-02-20 2008-02-20 Schlüssel mit einem verbesserten Schlüsselschaft

Publications (2)

Publication Number Publication Date
EP2093355A1 EP2093355A1 (fr) 2009-08-26
EP2093355B1 true EP2093355B1 (fr) 2016-02-10

Family

ID=40659789

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09152509.7A Not-in-force EP2093355B1 (fr) 2008-02-20 2009-02-11 Clé avec une tige améliorée

Country Status (3)

Country Link
EP (1) EP2093355B1 (fr)
CN (1) CN101514598B (fr)
DE (1) DE102008010164A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015100441U1 (de) * 2015-01-30 2016-05-03 Schulte-Schlagbaum Aktiengesellschaft Buntbartschlüssel mit im Querschnitt kreuzförmigem Schaft

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1031677B (de) * 1953-04-22 1958-06-04 Heinz Roesinger Schluessel fuer Tuerschloesser od. dgl.
GB854868A (en) 1958-09-30 1960-11-23 Yale & Towne Mfg Co Keys for locks
DE2037071A1 (de) 1970-07-27 1972-02-03 Strohschnitter & Co, 2000 Hamburg Schlüssel
AT371532B (de) * 1978-12-15 1983-07-11 Grundmann Gmbh Geb Flachschluessel
JPH1113318A (ja) * 1997-06-20 1999-01-19 Alpha Corp キープレート及びその製造方法
CN2709588Y (zh) * 2003-02-28 2005-07-13 程耀永 隐蔽钥匙孔防盗锁
CN2635832Y (zh) * 2003-08-11 2004-08-25 曾军 易识别钥匙
CN2856296Y (zh) * 2006-01-11 2007-01-10 刘振胜 钥匙

Also Published As

Publication number Publication date
CN101514598B (zh) 2012-07-11
EP2093355A1 (fr) 2009-08-26
CN101514598A (zh) 2009-08-26
DE102008010164A1 (de) 2009-08-27

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