EP0145420A2 - Schloss - Google Patents

Schloss Download PDF

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Publication number
EP0145420A2
EP0145420A2 EP84308305A EP84308305A EP0145420A2 EP 0145420 A2 EP0145420 A2 EP 0145420A2 EP 84308305 A EP84308305 A EP 84308305A EP 84308305 A EP84308305 A EP 84308305A EP 0145420 A2 EP0145420 A2 EP 0145420A2
Authority
EP
European Patent Office
Prior art keywords
barrel
bolt
key
tumblers
thrown
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.)
Granted
Application number
EP84308305A
Other languages
English (en)
French (fr)
Other versions
EP0145420B1 (de
EP0145420A3 (en
Inventor
John Rogers
William Keith Robinson
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.)
Gunnebo UK Ltd
Original Assignee
Chubb and Sons Lock and Safe Co Ltd
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 Chubb and Sons Lock and Safe Co Ltd filed Critical Chubb and Sons Lock and Safe Co Ltd
Priority to AT84308305T priority Critical patent/ATE45406T1/de
Publication of EP0145420A2 publication Critical patent/EP0145420A2/de
Publication of EP0145420A3 publication Critical patent/EP0145420A3/en
Application granted granted Critical
Publication of EP0145420B1 publication Critical patent/EP0145420B1/de
Expired 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
    • E05B47/00—Operating or controlling locks or other fastening devices by electric or magnetic means
    • E05B47/0038—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets
    • E05B47/0042—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets with rotary magnet tumblers
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B35/00—Locks for use with special keys or a plurality of keys ; keys therefor
    • E05B35/08—Locks for use with special keys or a plurality of keys ; keys therefor operable by a plurality of keys
    • E05B35/12—Locks for use with special keys or a plurality of keys ; keys therefor operable by a plurality of keys requiring the use of two keys, e.g. safe-deposit locks

Definitions

  • the present invention relates to locks and seeks in particular to provide a high-security key-operated door lock of robust construction.
  • a lock comprises: a bolt adapted to slide between locking and unlocking positions; a drive element for sliding the bolt as aforesaid in response to manipulation of an associated handle; the bolt or a member movable therewith being formed with a slot comprising two pocket portions lying on an axis parallel to the direction of movement of the bolt and separated by a gate portion having a lesser dimension in a direction transverse to said axis; a rotatable barrel separate from said drive element intersecting the said slot; said barrel having an external profile where it intersects said slot such as to be accommodated for rotation in either of said pocket portions but such that in a first rotational position thereof the gate portion of the slot is unable to pass over the barrel by movement with the bolt along said axis while in a second rotational position thereof said gate portion is able so to pass; and said barrel carrying a plurality of permanently-magnetised tumblers the magnetic fields of which normally interact to bias said tumblers into positions in which they collectively block rotation of the barrel from its first to its
  • the bolt is adapted to slide between an unlocking position and a single-thrown locking position, and between said single-thrown position and a double-thrown locking position, and there are two such barrels each intersecting a respective said slot and arranged so that a first said barrel must be rotated to its said second rotational position to permit movement of the bolt .between its unlocking and single-thrown positions, and the second said barrel must be rotated to its second rotational position to permit movement of the bolt between its single-thrown and double-thrown positions.
  • the lock shown in Figures 1 and 2 has a reciprocable dead bolt borne in a case 1 and comprising a head 2 fast with a plate-like tail 3.
  • This bolt can be thrown and withdrawn by turning handles (not shown) which are connected to a spindle 4 on either side of the lock; the spindle 4 turns a follower 5 keyed to it inside the lockcase and which drives the bolt 2/3 through a pin-and-slot connection 6/7.
  • the illustrated embodiment is a double-throw lock.
  • the bolt is arranged to be extended from its illustrated, withdrawn, position to a single-thrown position in which its head 2 protrudes from the lockcase by a certain distance (indicated at 2' in Figure 1), and can then be further extended to a double-thrown position in which the head 2 protrudes from the lockcase by a greater distance (as indicated at 2" in Figure 1).
  • two magnetic locking barrels 8 and 9 are provided, each being rotatable about an axis transverse to the direction of movement of the bolt by operation of a respective correct key.
  • the bolt tail 3 has two profiled slots 10 and 11, each comprising three distinct portions arranged along a respective axis parallel to the direction of movement of the bolt. That is to say the slot 10 comprises a first, generally circular pocket 12 adjacent to the bolt head 2, followed by a gate 13 of lesser width which opens out into a second, elongate pocket 14.
  • the profile of the slot 11 is similar, except that the order of its three portions is reversed as compared with slot 10, so that from its leading to its trailing end it comprises an elongate pocket 15, a gate 16 and a generally circular pocket 17.
  • the barrels 8 and 9 each intersect a respective slot 10,11, the cross- sectional profiles of the barrels where they extend through the slots being indicated in Figure 1 from which it is seen that in this region each barrel presents a truncated cylindrcal exterior surface with two opposed flats 18 and 19 respectively; the dimension between the respective pairs of flats 18 and 19 is just slightly less than the width of the gate 13,16 in the corresponding bolt slot 10 or 11.
  • Each barrel 8,9 is normally locked against rotation relative to the lockcase with its flats 18,19 oriented as shown in Figure 1, ie perpendicular to the direction of movement of the bolt.
  • Each barrel can, however, be released for rotation by the insertion of a correct "servant” or “master” key, as the case may be, into the respective barrel's key-guide 20 or 21.
  • the magnetic key-recognition mechanism by which the barrels are selectively locked or freed for rotation will be described hereinafter.
  • the correct "master” key is inserted into the key-guide 21 and turned to rotate the barrel 9 through 90° so that its flats 19 are aligned with the gate 16.
  • the bolt can now be moved to its double-thrown (2") position as the gate 16 passes over the barrel 9, the locked “servant” barrel 8 imposing no constraint on this movement until the double-thrown position is reached (8") as it lies within the elongate pocket 14.
  • the "master" barrel 9 through 90° to its locked condition (9") now blocks the bolt against retraction towards its single-thrown position, so it will be seen tha the "master” barrel 9 controls movement of the bolt in either direction between its single and double-thrown conditions independently of the "servant" barrel 8.
  • each locking barrel 8 and 9 by which the respective barrel is freed for rotation as described above is based upon the provision of a series of magnetically-coded tumblers, as will now be more fully explained with reference to Figures 3 and 4 which illustrate more fully the structure of the "servant" barrel 8.
  • the structure of the "master" barrel 9 is identical - the difference between the barrels being only in the coding of the magnetic tumblers described below - so the drawings and description will not be duplicated in this respect.
  • the barrel 8 is provided with a pair of opposed radial bores 22 within which a pair of plungers 23 are slidably borne and biased to protrude beyond the periphery of the barrel by light springs 24. In their extended condition the plungers 23 lie in respective recesses 25 ( Figure 4) in a fixed housing 26 surrounding that part of the barrel, to lock the barrel against rotation.
  • a pair of rotary tumblers 26A,26B and 26C,26D respectively borne for rotation about radially- aligned pins 27.
  • Each rotor is of generally cylindrical form having an arcuate segmental cut-out 28.
  • the cut-outs 28 in the rotor pairs 26A,26B and 26C,26D are profiled such that in a specified relative rotational position of the rotors in each pair the associated plunger 23 is able to be displaced radially inwards to release the barrel 8 for rotation in the housing 26, the plunger extending into the aligned cut-outs 28 in this movement, but in all other relative rotational positions of the rotors they block the plungers 23 against such retraction.
  • Mounted to each rotor 26A-26D is a respective ferrite element 29A-29D upon which permanent magnetic poles have been induced in a specified relationship to the respective rotor cut-outs 28.
  • the principle of operation of the magnetic rotors 26A-26D is as follows. That is to say the interaction of the magnetic forces between the rotors in each pair normally acts to bias each rotor to a position in which it blocks the retraction of the corresponding plunger 23 into the barrel 8. If, however, a correctly coded magnetic key is slid into the key-guide 20, (the flanks of which are defined by plates 30 of a non-magnetic grade of stainless steel or other non-magnetic material) the resultant magnetic forces established between each rotor and the adjacent key portions serve to rotate each rotor to the position in which its cut-out 28 aligns with the corresponding plunger 23, thereby allowing retraction of the latter.
  • a form of key 31 suitable for this purpose is illustrated in Figure 5.
  • zone A on flank 34 comes into register with the magnetic rotor element 29A, zone B on flank 34 registers with element 29B, zone C on flank 33 registers with element 29C and zone D on flank 33 registers with element 29D.
  • zone B on flank 33 registers with element 29B
  • zone C on flank 34 registers with element 29C
  • zone D on flank 34 registers with element 29D.
  • permanent magnetic poles have been induced in such orientations as to cause the rotors 26A-26D to move to their unblocking positions by the magnetic forces established between those zones and the rotor elements 29A-29B respectively.
  • FIG 4 this shows the interrelationship between the barrel plungers 23 and the surrounding housing 26.
  • a strip 36 of spring metal presenting an inclined face to the corresponding plunger 23.
  • turning the barrel clockwise causes the domed outer ends of the plungers 23 to run along the strips 36 and cam the plungers into the barrel, overcoming the bias of springs 24, thus permitting unblocking of the lock bolt 2/3, rotation of the barrel being stopped by a radial pin 37 ( Figure 3) contacting a fixed abutment (not shown) in the lockcase when the 90° position has been reached.
  • a lock constructed as described above is capable of providing a high degree of security against unauthorised operation or "picking", through use of the magnetised rotors 26.
  • the key(s) 31 being coded magnetically as opposed to mechanically coded with cuts or other formations characteristic of conventional keys, are impossible to duplicate by any "sight reading” technique.
  • the lock is well adapted to resist forceful attacks or other forms of abuse.
  • the interlocking of the barrels 8,9 within the slots 10,11 provides strong resistance to forcing of the bolt, either by pressure applied directly to the bolt head 2 or through the associated handle(s). Forced turning of the barrels 8,9 is also resisted without risk of damage to the rotors 26 by provision of the spring strips 36 as previously described.
  • the totally enclosed (in the peripheral sense) key-guides 20,21 provide no access to the rotors 26 for manipulation or forcing of the same. Being in the form simple channels extending all the way through the barrels 8,9, however, the key-guides 20,21 cannot easily be blocked up, or if extraneous objects should be inserted into them they will be easy to clear, attempts to frustrate the authorised key-operation of locks by the insertion of articles into their keyholes being a particular problem in certain kinds of institution in which the above-described lock will find application.

Landscapes

  • Lock And Its Accessories (AREA)
  • Switch Cases, Indication, And Locking (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Hydrogenated Pyridines (AREA)
  • Telephone Set Structure (AREA)
EP84308305A 1983-12-10 1984-11-29 Schloss Expired EP0145420B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT84308305T ATE45406T1 (de) 1983-12-10 1984-11-29 Schloss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8333049 1983-12-10
GB838333049A GB8333049D0 (en) 1983-12-10 1983-12-10 Locks

Publications (3)

Publication Number Publication Date
EP0145420A2 true EP0145420A2 (de) 1985-06-19
EP0145420A3 EP0145420A3 (en) 1986-06-25
EP0145420B1 EP0145420B1 (de) 1989-08-09

Family

ID=10553170

Family Applications (1)

Application Number Title Priority Date Filing Date
EP84308305A Expired EP0145420B1 (de) 1983-12-10 1984-11-29 Schloss

Country Status (6)

Country Link
EP (1) EP0145420B1 (de)
AT (1) ATE45406T1 (de)
AU (1) AU569594B2 (de)
DE (1) DE3479327D1 (de)
GB (2) GB8333049D0 (de)
IE (1) IE56038B1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7698917B2 (en) * 2006-03-06 2010-04-20 Handytrac Systems, Llc Electronic deadbolt lock with a leverage handle

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503315A (en) * 1947-11-11 1950-04-11 Baker Harold Ernest Dean Latch for doors
DE2365990A1 (de) * 1973-10-10 1977-05-18 Mrt Magnet Regeltechnik Gmbh Mittels eines permanentmagnet-schluessels betaetigbares drehzylinderschloss

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2503315A (en) * 1947-11-11 1950-04-11 Baker Harold Ernest Dean Latch for doors
DE2365990A1 (de) * 1973-10-10 1977-05-18 Mrt Magnet Regeltechnik Gmbh Mittels eines permanentmagnet-schluessels betaetigbares drehzylinderschloss

Also Published As

Publication number Publication date
GB8430442D0 (en) 1985-01-09
EP0145420B1 (de) 1989-08-09
AU3646384A (en) 1985-06-13
AU569594B2 (en) 1988-02-11
GB2151295A (en) 1985-07-17
EP0145420A3 (en) 1986-06-25
ATE45406T1 (de) 1989-08-15
GB8333049D0 (en) 1984-01-18
IE56038B1 (en) 1991-03-27
DE3479327D1 (en) 1989-09-14
IE843073L (en) 1985-06-10
GB2151295B (en) 1987-03-11

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