EP1767730A1 - Sicherheitssystem aus Schloss mit drehbaren Zuhaltungsscheiben und zugegörigem Schlüssel - Google Patents

Sicherheitssystem aus Schloss mit drehbaren Zuhaltungsscheiben und zugegörigem Schlüssel Download PDF

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Publication number
EP1767730A1
EP1767730A1 EP05077263A EP05077263A EP1767730A1 EP 1767730 A1 EP1767730 A1 EP 1767730A1 EP 05077263 A EP05077263 A EP 05077263A EP 05077263 A EP05077263 A EP 05077263A EP 1767730 A1 EP1767730 A1 EP 1767730A1
Authority
EP
European Patent Office
Prior art keywords
key
shaft
rotary
lock
discs
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Withdrawn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
EP05077263A
Other languages
English (en)
French (fr)
Inventor
Alfredo Muerza
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.)
Luma Industrias SA
Original Assignee
Luma Industrias SA
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 Luma Industrias SA filed Critical Luma Industrias SA
Priority to EP05077263A priority Critical patent/EP1767730A1/de
Publication of EP1767730A1 publication Critical patent/EP1767730A1/de
Withdrawn legal-status Critical Current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
    • E05B21/00—Locks with lamelliform tumblers which are not set by the insertion of the key and in which the tumblers do not follow the movement of the bolt e.g. Chubb-locks
    • E05B21/06—Cylinder locks, e.g. protector locks
    • E05B21/066—Cylinder locks, e.g. protector locks of the rotary-disc tumbler type

Definitions

  • This invention relates to a lock and key system based on rotary discs which is used extensively as a means for locking boxes and padlocks of motorcycles and their accessories.
  • These locking systems correspond to a general composition which comprises a plurality of combination discs which are each provided with conjugated rectangular central passages for the flat shaft of the key, in which passages there exists an edge which acts in combination with a respective bevel cut into this shaft, all such that at a first quarter-turn of the key all the combination discs are drawn forwards or backwards to a rotary position in which all of their peripheral notches are aligned with one another to form a continuous longitudinal depression which permits accommodation of a radially movable cotter, which until then had been interposed between the static body of the lock and a corresponding rotor, in the cavity of which this quarter-turn has been produced by a rotary body which accommodates the combination discs and incorporates the actuator body which gives rise to the opening of the mechanism of the lock, such that this rotor can now be rotated a further quarter-turn, which, when using the correct key, will give rise to this opening of the mechanism of the lock, and between each pair of adjacent combination discs there are interposed separator discs
  • This composition has a major disadvantage consisting of the fact that, when its own key is introduced into one of these locks, although this introduction is incomplete, it is still possible to carry out the first quarter turn; then, users who are unaware of the fact that the key has not been introduced as far as it will go, carry out this first quarter turn, and, when trying to carry out the second turn which opens the mechanism of the lock, they find that they are unable to do so.
  • the user is not aware of this, it is logical since the discs of the combination have not been matched with the respective bevels of the shaft of the key; the user may then think that the lock is awkward, and, by forcing the turn, will give rise to breakage of a type of key which, because of its particular design, is not very strong.
  • the first quarter-turn is used to set the combination, whereas the second quarter-turn is the actual active turn to give rise to the opening of the mechanism of the lock.
  • the present invention proposes a lock and key system with rotary discs which has the specific feature that in the circular hollow centre of the separator discs there exist some projecting means which are formed towards the inside and are arranged symmetrically relative to the path of entry of the shaft of the key into the lock, whilst in this shaft there are some recessed means which are reciprocal with the said projecting means, and are inter-penetrable with the latter by means of rotary adjustment, the said projecting means operating in conjunction with the said recessed means in relation to the rotary manoeuvre corresponding to the said first typical quarter-turn of the key of rotary-disc locks, and the shaft of which key has, starting from its tip a smooth area free from the said cut bevels, which has a length greater than the distance between two adjacent separator discs.
  • the said projecting means are two flanges in the form of a segment of a circle, and at their ends they have a separation which is adapted with excess to the thickness of the flat shaft of the key, and the said recessed means are all grooves which are symmetrical with one another in a rotary manner and are adapted with excess to the thickness and radial size of the said flanges, which grooves are already provided along the shaft of the key in rough-cut form, corresponding to the number and position of the separator discs, and, in the virgin state of this shaft, before the bevels of the combination specific to each key are cut.
  • the functionality of the ingenious and simple invention is apparent.
  • the said first 90° turn (putting into the combination position) can only be carried out when the correct key is introduced completely, since only then do the grooves cut in the shaft of this key coincide on the same transverse plane as the flanges of the separator discs, thus making it possible for the shaft of the key to rotate relative to the static separator discs, and, by means of the combination bevels cut in this shaft, to give rise to the said first 90° turn.
  • this solution proposed does not presuppose any increased difficulty or cost in the production of the lock system, or at least nothing which is significant. This is because the separator discs are obtained by die-casting, and it is sufficient simply to use a die with the new form. The execution of the grooves in the shaft of the key is also a simple operation.
  • the attached drawings illustrate a preferred embodiment of the invention which relates to a rotary disc lock and key system, the general composition of which comprises a plurality of combination discs 3 which are each provided with rectangular central passages 3a which are conjugated with the flat shaft 2 of the key 1, in which there is an edge which acts in combination with a respective bevel 4 cut into this shaft 2, all such that at a first quarter-turn of the key 1 all the combination discs 3 are drawn forwards or backwards to a rotary position in which all of their peripheral notches 3b are aligned with one another to form a continuous longitudinal depression which permits accommodation of a radially mobile cotter, which until then had been interposed between the static body of the lock and a corresponding rotor, in the cavity of which this quarter-turn has been produced by a rotary body 8 which accommodates the combination discs 3 and incorporates the actuator body 9 which gives rise to the opening of the mechanism of the lock, such that this rotor can now be rotated a further quarter-
  • the object of the invention consists in that (figure 1), in the circular hollow centre of the said separator discs 5 there exist some projecting means 6 which are formed towards the inside and are arranged symmetrically relative to the path of entry of the shaft 2 of the key 1 into the lock, whilst in this shaft 2 there are some recessed means 7 which are reciprocal with the said projecting means 6, and are inter-penetrable with the latter by means of rotary adjustment, the said projecting means 6 operating in conjunction with the said recessed means 7 in relation to the rotary manoeuvre corresponding to the said first typical quarter-turn of the key 1 of rotary-disc locks, and the shaft 2 of which key 1 has, starting from its tip, a smooth area free from the said cut bevels 4, which has a length greater than the distance between two adjacent separator discs 5.
  • the invention includes a preferred embodiment wherein the said projecting means 6 are two flanges 6 in the form of a segment of a circle, and at their ends they have a separation which is adapted with excess to the thickness of the flat shaft 2 of the key 1, and the said recessed means are all grooves 7 which are symmetrical with one another in a rotary manner and are adapted with excess to the thickness and radial size of the said flanges 6, which grooves 7 are already provided along the shaft 2 of the key 1 in rough-cut form, corresponding to the number and position of the separator discs 5, and, in the virgin state of this shaft 2, before the bevels 4 of the combination specific to each key 1 are cut.
  • a specific feature of the invention is that it can be distinguished visually simply by looking at a key 1 in the uncut or virgin state.
  • the type used hitherto will have a shaft 2 which is completely smooth; whereas the key 1 according to the invention will have toothing corresponding to the pre-production of the grooves 7 at the moment when the key leaves the production chain.
  • This specific feature is the one illustrated in figures 4 and 6; figures 5 and 7 are the cut states which correspond respectively to figures 4 and 6.

Landscapes

  • Lock And Its Accessories (AREA)
EP05077263A 2005-09-21 2005-09-21 Sicherheitssystem aus Schloss mit drehbaren Zuhaltungsscheiben und zugegörigem Schlüssel Withdrawn EP1767730A1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP05077263A EP1767730A1 (de) 2005-09-21 2005-09-21 Sicherheitssystem aus Schloss mit drehbaren Zuhaltungsscheiben und zugegörigem Schlüssel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP05077263A EP1767730A1 (de) 2005-09-21 2005-09-21 Sicherheitssystem aus Schloss mit drehbaren Zuhaltungsscheiben und zugegörigem Schlüssel

Publications (1)

Publication Number Publication Date
EP1767730A1 true EP1767730A1 (de) 2007-03-28

Family

ID=36013624

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05077263A Withdrawn EP1767730A1 (de) 2005-09-21 2005-09-21 Sicherheitssystem aus Schloss mit drehbaren Zuhaltungsscheiben und zugegörigem Schlüssel

Country Status (1)

Country Link
EP (1) EP1767730A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3922788A1 (de) * 2020-06-08 2021-12-15 ABUS August Bremicker Söhne KG Schlüsselrohling und schlüssel zum betätigen eines scheibenzylinders sowie verfahren zum herstellen eines solchen schlüsselrohlings und schlüssels

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245729A1 (de) * 1972-09-18 1974-04-04 Burnerd Clark Prescott Zylinderschloss
US4062211A (en) * 1977-02-07 1977-12-13 Miller Harry C Rotary plug cylinder lock
GB1543627A (en) * 1975-10-03 1979-04-04 Waertsilae Oy Ab Cylinder lock mechanism

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2245729A1 (de) * 1972-09-18 1974-04-04 Burnerd Clark Prescott Zylinderschloss
GB1543627A (en) * 1975-10-03 1979-04-04 Waertsilae Oy Ab Cylinder lock mechanism
US4062211A (en) * 1977-02-07 1977-12-13 Miller Harry C Rotary plug cylinder lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3922788A1 (de) * 2020-06-08 2021-12-15 ABUS August Bremicker Söhne KG Schlüsselrohling und schlüssel zum betätigen eines scheibenzylinders sowie verfahren zum herstellen eines solchen schlüsselrohlings und schlüssels
US11988017B2 (en) 2020-06-08 2024-05-21 ABUS August Bremicker Söhne KG Key blank and key for actuating a disk cylinder and method of manufacturing such a key blank and key

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