EP0376867B1 - Dispositif à serrure et à clé comportant un bloc de sûreté rapporté à la serrure - Google Patents

Dispositif à serrure et à clé comportant un bloc de sûreté rapporté à la serrure Download PDF

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Publication number
EP0376867B1
EP0376867B1 EP89440113A EP89440113A EP0376867B1 EP 0376867 B1 EP0376867 B1 EP 0376867B1 EP 89440113 A EP89440113 A EP 89440113A EP 89440113 A EP89440113 A EP 89440113A EP 0376867 B1 EP0376867 B1 EP 0376867B1
Authority
EP
European Patent Office
Prior art keywords
key
washer
safety block
entry
safety
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
EP89440113A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0376867A1 (fr
Inventor
Eric Barge
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.)
Deny
Original Assignee
Deny
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 Deny filed Critical Deny
Publication of EP0376867A1 publication Critical patent/EP0376867A1/fr
Application granted granted Critical
Publication of EP0376867B1 publication Critical patent/EP0376867B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • E05B17/00—Accessories in connection with locks
    • E05B17/14—Closures or guards for keyholes
    • E05B17/18—Closures or guards for keyholes shaped as lids or slides
    • E05B17/185—Closures or guards for keyholes shaped as lids or slides pivoting about an axis perpendicular to the lock face

Definitions

  • the present invention relates to a lock and key device comprising a key of a new type, the rod of which is in cross section, intended to cooperate with a security lock of the type comprising an added safety block.
  • the most commonly used include a rotor mounted movable in rotation in a stator.
  • the rotor can be rotated by a key, the end of which has a cutout corresponding to the combination of the lock.
  • Other safety blocks include a stack of washers, each of which has a very specific internal cutout, the relative position of these washers determining the combination of the lock at the same time as the rotation stroke of the key.
  • This last type of safety block is the more often associated with a round key, that is to say a key whose cross section of the rod is circular.
  • the end of the key is cut to correspond to the combination of the block, defined by the relative position of the washers.
  • This type of key has the disadvantage of having a fairly large circular section, so that the entrance to the corresponding safety block has a relatively large opening, and does not oppose a sufficient obstacle to an attempted break-in.
  • the reduced dimensions of the key entry of the safety block according to the invention are authorized by the profile which the key according to the invention has at its end, the double and flat bit which it comprises being thin, likewise than the two ribs which extend the stem of the key and which overcome it on both sides.
  • the key entry of the safety block according to the invention has approximately the shape of a rectangle of small width comprising in its middle two symmetrical enlargements of small dimensions for the passage of these two ribs.
  • the security resulting from the reduced dimensions of the key entry of the safety block according to the invention is further increased by the presence, in said safety block, immediately behind the entry washer movable in rotation under the action. of the key, of a safety washer forming a cover which has the function of closing off the entry of the key when the latter has turned in the safety block of the predetermined fraction of a turn, which frees the exit from said block by authorizing passing the key.
  • the safety washer placed behind the inlet washer of the safety block is advantageously extended by a flat ring of a certain thickness surrounding said inlet washer.
  • the key entry formed in the entry washer is, as has already been said, of reduced dimensions, affecting the shape of the profile of the key at the bit and having two enlargements for the passage of the ribs extending the key shank.
  • These ribs advantageously have an approximately square section, and the enlargements in question have a corresponding shape, so as to allow the ribs of the key rod to drive the inlet washer in rotation.
  • the safety washer positioned immediately behind the inlet washer has an opening widened at its central part so as not to give grip to the ribs of the key rod.
  • the inlet washer of the safety block further comprises, arranged in its thickness, regularly spaced cylindrical housings, arranged converging towards the center of the washer and opening at its periphery, these housings each containing a spring intended to apply a ball against the wall of the flat ring extending the safety washer.
  • Housing of the same number is also provided in this ring to receive the balls of the inlet washer, so as to lock the latter in the two positions that it is capable of adopting.
  • the safety washer is itself held in position by means of orifices, most often two in number, formed on its surface for the passage of the screws which secure all of the washers constituting the safety block.
  • the number of housings formed in the inlet washer as well as in the ring extending the safety washer is four, so that two consecutive housings of the washer entry are positioned at right angles to each other.
  • the key's rotational stroke is limited to a quarter of a turn, the key being positioned at a quarter of a turn.
  • bit 4 is symmetrical with respect to the axis of key 1 and has variations 4 ′ which are also symmetrical.
  • Figure 2b shows the profile of the key 1 at the bit 4, with the rib 5 of the rod 3 which partially covers it in the middle.
  • the opening 8 thus has the shape of a rectangle having in its middle two enlargements 9 symmetrical for passage ribs 5.
  • the inlet washer 7 is immobilized in rotation by means of four balls, not shown, placed in four housings 10 formed in the thickness of the washer 7 and opening at its periphery, the four balls being associated with four springs, also not shown, which tend to eject them out of the housings 10.
  • the washer 11 is surmounted by a ring 16 pierced with four holes 14 for receiving the balls in one or the other of the two possible positions of the inlet washer 7.
  • Two holes 15 formed in the bottom of the washer 11 allow the passage of two screws, not shown, which secure all of the washers constituting the safety block 2.
  • FIG. 6 clearly shows the safety washer 11 pierced with two holes 15 for the passage of the fixing screws, and surmounted by the ring 16 pierced with holes 14 intended to receive the balls placed in the housings 10 of the inlet washer 7.
  • this device is as follows: the key is inserted into the safety block 2, where its end comes into abutment on the exit face of the block. A quarter turn key rotation results in the same rotation of the inlet washer 7, the inlet 8 of which is then closed off by the safety washer 11 placed immediately behind it.
  • the set of cams and keys arranged at the outlet of the safety block 2 is rotated, freeing the passage of the key 1 and authorizing its access to the lock on which the safety block 2 is attached.
  • closing the key entry with the safety washer enhances the security of the device according to the invention, access to the mechanism of the safety block being completely prohibited when the key has operated the opening of the safety block.

Landscapes

  • Lock And Its Accessories (AREA)
  • Fuses (AREA)
  • Refuge Islands, Traffic Blockers, Or Guard Fence (AREA)
  • Supports Or Holders For Household Use (AREA)
  • Electrotherapy Devices (AREA)
EP89440113A 1988-12-27 1989-10-19 Dispositif à serrure et à clé comportant un bloc de sûreté rapporté à la serrure Expired - Lifetime EP0376867B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8817454A FR2641023B1 (ru) 1988-12-27 1988-12-27
FR8817454 1988-12-27

Publications (2)

Publication Number Publication Date
EP0376867A1 EP0376867A1 (fr) 1990-07-04
EP0376867B1 true EP0376867B1 (fr) 1994-08-03

Family

ID=9373599

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89440113A Expired - Lifetime EP0376867B1 (fr) 1988-12-27 1989-10-19 Dispositif à serrure et à clé comportant un bloc de sûreté rapporté à la serrure

Country Status (5)

Country Link
EP (1) EP0376867B1 (ru)
AT (1) ATE109539T1 (ru)
DE (1) DE68917282D1 (ru)
ES (1) ES2058587T3 (ru)
FR (1) FR2641023B1 (ru)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2734858B1 (fr) * 1995-06-02 1997-07-25 Deny Procede d'ouverture d'un cylindre de serrure a clavettes pivotantes d'obturation du passage de cle, cylindre et cle pour la mise en oeuvre de ce procede
FR2785322B1 (fr) 1998-11-02 2005-09-23 Deny Serrure mecanique a combinaison et blocage mecanique par commande electronique
FR2880646B1 (fr) * 2005-01-12 2007-04-06 Deny Fontaine Soc Par Actions Cylindre de serrure pour cle a tige de section non circulaire
EP2984259A1 (en) * 2013-04-09 2016-02-17 CISA S.p.A. Break-in resistant double-bit lock and related key
CN104372991A (zh) * 2014-10-20 2015-02-25 赵战西 一种钥匙及防盗锁具

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0368703A1 (fr) * 1988-10-24 1990-05-16 Charles Zaoui Dispositif de serrure perfectionné à rondelles de codage

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE402826C (de) * 1922-12-09 1924-09-18 Willi Korn Schluessellochverschluss
DE524308C (de) * 1928-10-26 1931-05-06 Hermann Kade Schluessellochverschluss

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0368703A1 (fr) * 1988-10-24 1990-05-16 Charles Zaoui Dispositif de serrure perfectionné à rondelles de codage

Also Published As

Publication number Publication date
ATE109539T1 (de) 1994-08-15
FR2641023A1 (ru) 1990-06-29
FR2641023B1 (ru) 1991-05-24
DE68917282D1 (de) 1994-09-08
ES2058587T3 (es) 1994-11-01
EP0376867A1 (fr) 1990-07-04

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