EP0042756B1 - Magnetschlüsselbetätigtes Schloss - Google Patents

Magnetschlüsselbetätigtes Schloss Download PDF

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Publication number
EP0042756B1
EP0042756B1 EP81302811A EP81302811A EP0042756B1 EP 0042756 B1 EP0042756 B1 EP 0042756B1 EP 81302811 A EP81302811 A EP 81302811A EP 81302811 A EP81302811 A EP 81302811A EP 0042756 B1 EP0042756 B1 EP 0042756B1
Authority
EP
European Patent Office
Prior art keywords
gate member
spigot
assembly according
key
drive
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
Application number
EP81302811A
Other languages
English (en)
French (fr)
Other versions
EP0042756A1 (de
Inventor
Roger Michael Smith
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.)
Allegion UK Ltd
Original Assignee
Newman Tonks 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 Newman Tonks Ltd filed Critical Newman Tonks Ltd
Priority to AT81302811T priority Critical patent/ATE9374T1/de
Publication of EP0042756A1 publication Critical patent/EP0042756A1/de
Application granted granted Critical
Publication of EP0042756B1 publication Critical patent/EP0042756B1/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
    • E05B47/0041—Operating or controlling locks or other fastening devices by electric or magnetic means using permanent magnets with tumbler pins suspended for a pendulum movement

Definitions

  • a conventional form of cylinder lock is operated by a key so as to enable the cylinder to rotate and drive a drive tongue which controls opening and closing of a latch on the lock.
  • the cylinder incorporates a number of tumblers which are moved by the key into positions enabling the cylinder to be rotated if the right key is used.
  • the pins can either be moved by the particular profile of the key used or can be orientated into the necessary positions by means of magnets distributed within the key which attract the tumblers.
  • Such locks are of relatively intricate construction requiring a large number of parts and a complicated assembly process.
  • the magnetic key operated lock assembly of this invention starts from a construction wherein a body portion houses magnetic pins which are swivel-mounted on a support lock member, the ends of the magnetic pins face a slidable gate member which is displaceable towards the magnetic pins, the gate member is provided with holes for the receipt of the ends of the magnetic pins, the support lock member head is formed to receive a key having recesses incorporating magnets which are intended to attract the other ends of the magnetic pins, so as to pivot them into alignment with the holes in the gate member, and the gate member is guided in the body portion by means of a spigot.
  • the invention is characterised by the features that the support lock member is a drive head rotatably mounted in the body portion, the spigot by means of which the slidable gate member is guided, is carried by the drive head, and the gate member is keyed onto and displaceable along the said spigot, the body housing is provided with stops cooperating with the slidable gate member, whereby the gate members can only become disengaged from the stops by riding up the magnetic pins where these are aligned with the holes in the gate members.
  • the magnetic pins With such an assembly the magnetic pins will be totally enclosed within the lock body and thus cannot be manipulated by a lock-picking tool.
  • the magnetic pins In order to be able to rotate the spigot it is essential that the magnetic pins should be aligned with the holes in the gate member and this can only be achieved by using a key which has magnets disposed therein in the correct array. For each position corresponding to each magnetic pin a large number of possible magnet locations within the key body can be provided so that the total number of combinations of magnet positions can be very large.
  • the avoidance of the conventional tumblers leads to a much simpler form of assembly which can be put together quite easily and does not require carefully matched parts for each particular lock combination.
  • the only features defining the particular lock combination are the positions of the holes in the gate member which receive the magnetic pins.
  • the stops and gate member define cam and cam follower surfaces for directing the gate member towards the magnetic pins as the spigot rotates.
  • the gate members is biased towards the pins, such as by a compression spring acting on the gate member.
  • the stops may be designed to slide below outward extensions of the gate member when the stops are disengaged.
  • the cam and cam follower surfaces may be designed in the form of ramps which slide against one another as the gate member rotates. Alternatively the cam could be just a pin projecting into an angled slot within the gate member which defines the cam follower surfaces.
  • the assembly may effectively include a drive plate keyed onto the spigot and engaged with the gate member by interposed lugs and recesses, the drive plate and gate member moving apart as the gate member rides up the spigot.
  • the assembly could of course be returned to the locked position by reverse rotation of the key it may be preferred that the assembly should include return biasing means for driving the rotational parts of the assembly back to a condition wherein the gate member is disengaged from the magnetic pins.
  • the return biasing means effectively comprises a torsion spring acting on the spigot.
  • the stops or separate stop members may be so positioned that they act to define the maximum limit of rotation of the rotational parts of the assembly.
  • Keying of the gate member onto the spigot may be achieved in any convenient manner but a preferred arrangement is to form the spigot with D-shaped cross-section, the parts engaging with the spigot being provided with correspondingly shaped holes.
  • a D-shaped cross-section (or some other cross-section which is symmetrical only in one plane) ensures that the various parts are assembled together in one particular orientation only.
  • the drive head should incorporate recesses which house the heads of the magnetic pins, each recess being of polygonal cross-section such that the corners of the recesses define possible operating positions of the magnetic pin as determined by a magnet position in the key.
  • the magnetic pins themselves are ideally formed with a waist approximately midway between their ends, which waists are held within slots in a plate mounted on the drive head.
  • the outer face of the drive head has a shaped recess to receive a key head such that interengagement of the key and recess enables the drive head to be rotated by the key.
  • the sides of the recess are ideally chamfered so that the key will ride out of engagement before excessive rotational force can be applied to the drive head.
  • the recess in the drive head is covered by a bezel having an opening with notches for the receipt of a correctly aligned key formed with flanges corresponding to the position of the notches, to enable the key to locate with the recess and be rotated so that the flanges ride below the rim of the bezel opening.
  • the invention further extends to the lock operating assembly as hereinbefore described in combination with a key to be engaged with the drive head so as to cause the magnetic pins to be aligned with holes in the gate member.
  • the key will have a head which fits with the drive head of the assembly together with a grip portion extending therefrom which may take many forms.
  • the key will be so formed that there are groups of cavities in the keyhead which correspond to each pin position, a magnet being enclosed within one cavity of each group.
  • a key will be of standard construction for each lock combination which is determined solely by the cavities chosen for a magnet in each group of cavities.
  • FIG. 1 the assembly is housed within a body portion 1 which will be set into a hole drilled through a door or the like.
  • the body portion 1 is held in position by means of screws which pass through a back plate and are received within screwthreaded holes 2 at the back of the body 1 ( Figure 3).
  • the parts of the assembly shown in Figure 2 are then assembled within the body portion 1.
  • These parts comprise firstly a drive plate 3 which is interconnected with a gate moulding 4 by means of lugs 5 received in recesses 6 in the outer edges of the gate moulding 4.
  • a coil spring 7 operates to drive the parts 4 and 5 away from one another.
  • a pin disc 8 is positioned about a drive spigot 9 carried by a drive head 10.
  • An anti friction ring 10A is provided between the drive head 10 and the body portion 1.
  • the pin disc 8 has a central hole 11 which fits over an enlargement 46 of the drive spigot 9.
  • the pin disc has four holes 12A near its outer edge which locate over bosses 12B projecting down from the lower surface of the drive head 10 (as shown in Figures 3 and 6).
  • the pin disc 8 also carries four pins 13, each formed with a waist 14 which is held in a hole 15.
  • Each hole 15 is in the centre of a slit 16, the pin disc 8 being formed from a flexible metal (thin phosphor bronze sheet) enabling the pins to be pushed into position as a snap-fit.
  • the top ends 17 of the pins 14 are received within recesses 18 in the drive head 10 ( Figure 6).
  • the other ends 19 of the pins 13 are tapered to a point to enable them to enter holes 20 drilled into the gate moulding 4 in a manner which will be described hereinafter.
  • a drive ring 23 of a plastics material is mounted on and linked to the drive head 10.
  • a location moulding 26A is keyed onto the drive spigot 9.
  • the top end of a drive tongue 26B is also received in the lower portion of a slit 27 and the complete assembly is held in position by a circlip 28 which is snap fitted into a groove 29 in the drive spigot 9.
  • a bezel 30 is secured onto the body 1 by rivets passing through holes 31 A in the body ( Figure 3).
  • a pin 30A projecting from the bezel 30 will fix into the door body and resist attempts to rotate the whole assembly within the door.
  • FIGs 9 to 12 illustrate the essential features of a key which will be used to operate the complete drive assembly illustrated in Figure 3.
  • This key has a grip portion 32 carrying a head 33 of generally circular cross-section incorporating a key insert 34 having one part cut away at 35 so that this portion of the key head corresponds to the shape of a recess 36 formed in the drive ring 23.
  • Within the key insert 34 are formed four groups of cavities 37. These cavities are of cylindrical form and there are six in each group.
  • a magnet is positioned in one cavity of each group 37 and the key insert is then inserted into a recess 38 of the key grip portion 32 to hide the magnets inside the key head 33.
  • the key grip portion 32 has upstanding ears 39 with flanges 40 which will fit into the notches 41 of the bezel 30 and will be held below the rim 42 of the bezel as the key is rotated.
  • the magnets attract the pins 13 (formed from soft iron) and, if the correct key is used, these pins are then aligned with the holes 20 drilled in the gate moulding 4 (these holes 20 will have been pre-drilled at any one of six position in each of the four areas spaced at 90° from each other around the gate moulding 4).
  • the parts 42 of a central boss 43 of the gate moulding 4 are cut away to allow for the necessary movement of the pins 13.
  • the pins 13 will be pivoted into such positions that they do not all align themselves with the holes 20 in the gate moulding 4. Thus after a small movement of the gate moulding 4 towards the drive head 10 the pins 13 will contact the surface of the gate moulding and prevent further movement along the drive spigot 9. The abutment of the stops 21 against the edge surfaces 48 of the flanges 44 of the gate moulding will also prevent further rotation of the gate moulding and thus of the drive spigot 9.
  • the key can only be removed from the recess 36 by rotating the flanges 39 back into alignment with the notches 41 in the bezel 30, with the result that the assembly will naturally revert to the normal, or locking, position.
  • the ramps 22 will come into engagement with the cam follower surfaces 25 on the gate moulding 4 causing the gate moulding to be driven, against the bias of the spring 7, into the condition shown in Figure 3 where the pins 13 are free of the holes 20 in the gate moulding.
  • the bezel 30 may be modified to have four equiangularly spaced notches 41 enabling the key to be removed in the unlocking position.
  • the location moulding 26A carries bosses 53 on arms 54 which click into recesses 55 in the base of the body portion 1 (see Figures 1 and 4) to hold the assembly in the alternative locked and unlocked conditions.
  • each pin 13 may be moved from the rest position 13A to the correct angled position 13B where the tip 19 will lie directly above the hole 20 in the gate moulding 4.
  • the provision of four pins with six positions for each pin provides a total of 1296 alternative pin configurations (or combinations).
  • FIG. 9 which also serve as a fob for carrying other conventional keys etc. on the ring portion 56.
  • the key grip portion 32 could lie at right angles to the head 33 producing a key of T-shaped form in side view.
  • automatic machinery could be programmed to drill the four holes 20 in the gate moulding to a predetermined pattern in accordance with the 1296 combinations available.
  • the machine could also assemble the magnets into two or three key mouldings to be supplied with the lock and issue a print-out of the combination.
  • the lock assembly could be modified in various ways.
  • the cam follower surfaces 25 and end surfaces 48 of the flange 44 of the gate moulding 4 could be formed to define an angled slot receiving a pin-like stop 21.
  • the number of possible combinations can be varied by changing the number of pins 13 and the possible orientations thereof.
  • the bezel 30 may be formed without the notches 41 and with a reduced rim 42 so that the key can be applied directly to the recess 36 in the drive ring 23.
  • the notches 57 and the ears 40 on the key will be omitted, but the edge wall of the recess 36 will be chamfered inwardly.
  • the drive tongue 26B may be offset from the axis of the assembly defined by the drive spigot 9. This could be achieved by providing a drive member for the drive tongue which is offset to one side of the body portion 1 and interconnected with the drive spigot 9 by gearing.

Landscapes

  • Lock And Its Accessories (AREA)
  • Feeding And Guiding Record Carriers (AREA)
  • Switches With Compound Operations (AREA)
  • Endoscopes (AREA)

Claims (20)

1. Durch einen Magnetschlüssel betätigbare Schließeinrichtung mit einem Gehäuse (1), in dem Magnetstifte (13) pendelnd an einem Tragglied (23, 10, 8) gelagert sind, deren Enden (19) einem Sperrglied (4) gegenüberliegen, das auf die Magnetstifte (13) zu verschiebbar auf einem Zapfen (9) im Gehäuse (1) geführt und mit Löchern (20) zur Aufnahme der Enden (19) der Magnetstifte (13) versehen ist, wobei der Kopf (23) des Traggliedes zur Aufnahme eines Schlüssels (33) ausgebildet ist, der in Aussparungen (37) angeordnete Magnete aufweist, die dazu bestimmt sind, die anderen Enden der Magnetstifte (13) anzuziehen und in eine zu den Löchern (20) in dem Sperrglied (4) fluchtende Lage zu schwenken, dadurch gekennzeichnet, daß das Tragglied (23, 10, 8) ein drehbar im Gehäuse (1) angeordneter Körper ist, daß der Zapfen (9), durch den das Sperrglied (4) verschiebbar geführt ist, an dem Körper (10) angebracht und das Sperrglied (4) undrehbar, jedoch verschiebbar auf dem Zapfen (9) angeordnet ist, und daß das Gehäuse (1) mit Anschlägen (21) versehen ist, die mit dem verschiebbaren Sperrglied (4) zusammenwirken, derart, daß das Sperrglied (4) nur dann durch ausschieben auf die Magnetstifte (13) von den Anschlägen (21) freikommt, wenn die Magnetstifte (13) mit den löchern (20) in dem Sperrglied fluchten.
2. Schließeinrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Anschläge (21) und das Sperrglied (4) Nocken (22) und Nockenflächen (25) aufweisen, um das Sperrglied (4) auf die Magnetstifte (13) hin zu Führen, wenn der Zapfen (9) mit dem Körper (10) gedreht wird.
3. Schließeinrichtung nach Anspruch 1 oder 2, dadurch gekennzeichnet, daß das Sperrglied (4), beispielsweise durch eine Druckfeder (7), in Richtung auf die Magnetstifte beaufschlagt ist.
4. Schließeinrichtung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Bewegung des Sperrgliedes (4) entlang des Zapfens (9) durch Anlage an dem Körper (10) begrenzt ist, und das Sperrglied (4) in dieser Stellung von den Anschlägen (21) frei ist.
5. Schließeinrichtung nach Anspruch 4, dadurch gekennzeichnet, daß die Anschläge (21) unter äußere Fortsätze (44) des Sperrgliedes (4) gleiten, wenn sie außer Eingriff sind.
6. Schließeinrichtung nach einem der Ansprüche 1 bis 5, gekennzeichnet durch eine Antriebsplatte (3), die durch Keile auf dem Zapfen (9) angebracht und mit dem Sperrglied (4) durch ineinandergreifende Vorsprünge (5) und aussparungen (6) verbunden ist, wobei sich die Antriebsplatte (3) und das Sperrglied (4) voneinander entfernen, wenn sich das Sperrglied (4) auf dem Zapfen (9) nach oben verschiebt.
7. Schließeinrichtung nach einem der Ansprüche 1 bis 6, gekennzeichnet durch Mittel zum Rückführen der drehbaren Teile der Einrichtung in eine Lage, in der das Sperrglied (4) von den Magnetstiften (13) frei ist.
8. Schließeinrichtung nach Anspruch 7, dadurch gekennzeichnet, daß die Rückführmittel von einer auf den Zapfen (9) wirkenden Torsionsfeder gebildet sind.
9. Schließeinrichtung nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, daß die Anschläge (21) oder eigene Anschlagelemente (47) aur Begrenzung der maximalen Drehbewegung der Drehbaren Teile der Einrichtung vorgesehen sind.
10. Schließeinrichtung nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, daß der Zapfen (9) einen D-förmigen Querschnitt hat und die auf diesem sitzenden Teile entsprechend geformte Löcher aufweisen.
11. Schließeinrichtung nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, daß der Zapfen (9) eine Zunge (26B) zur Betätigung einer Schloßfalle aufweist.
12. Schließeinrichtung nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, daß der Kopf (10) Aussparungen (18) zur Aufnahme der Köpfe der Magnetstifte (13) aufweist und jede Aussparung (18) einen mehreckigen Querschnitt hat, derart, daß die Ecken der Aussparungen mögliche Arbeitslagen der Magnetstifte (13) entsprechend einer Magnetlage im Schlüssel (33) definieren.
13. Schließeinrichtung nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, daß die Magnetstifte etwa in der Mitte zwischen ihren Enden mit einer Einschnürung (14) versehen sind und die Einschnürungen (14) in Schlitzen in einer Platte (8) gehalten sind, die an dem Körper (10) angebracht ist.
14. Scließeinrichtung nach einem der Ansprüche 1 bis 13, dadurch gekennzeichnet, daß die Außenfläche des Traggliedes (23, 10) eine Aussparung (36) zur Aufnahme eines Schlüsselkopfes aufweist, die so geformt ist, daß der Körper (10) durch das Zusammenwirken von Schlüssel (33) und Aussparung (26) gedreht werden kann.
15. Schließeinrichtung nach Anspruch 14, dadurch gekennzeichnet, daß die Seiten der Aussparung (36) abgeschrägt sind, so daß der Schlüssel (33) außer Eingriff kommt, bevor eine übermäßige Drehkraft auf den Körper (10) ausgeübt werden kann.
16. Schließeinrichtung nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, daß die Außenfläche des Tragglied (23, 10) in das Gehäuse der Einrichtung eingelassen ist.
17. Schließeinrichtung nach einem der Ansprüche 1 bis 16, gekennzeichnet durch einen Schlüssel (33), der mit dem Tragglied (23, 10) in Wirkverbindung bringbar ist, um die Magnetstifte (13) in eine mit den Löchern (20) in dem Sperrkörper (14) fluchtende Lage zu bringen.
18. Schließeinrichtung nach Anspruch 17, dadurch gekennzeichnet, daß jeder Stift-Position entsprechend eine Gruppe von Aussparungen (37) im Schlüssel (33) vorgesehen ist und in einer Aussparung jeder Gruppe ein Magnet angeordnet ist.
19. Schließeinrichtung nach einem der Ansprüche 1 bis 18, dadurch gekennzeichnet, daß der Zapfen (9) aus zwei Teilen besteht, die miteinander derart in Eingriff sind, daß der zweite Teil aus der Achse der Schließeinrichtung versetzt ist.
EP81302811A 1980-06-24 1981-06-23 Magnetschlüsselbetätigtes Schloss Expired EP0042756B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT81302811T ATE9374T1 (de) 1980-06-24 1981-06-23 Magnetschluesselbetaetigtes schloss.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8020676 1980-06-24
GB8020676 1980-06-24

Publications (2)

Publication Number Publication Date
EP0042756A1 EP0042756A1 (de) 1981-12-30
EP0042756B1 true EP0042756B1 (de) 1984-09-12

Family

ID=10514284

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81302811A Expired EP0042756B1 (de) 1980-06-24 1981-06-23 Magnetschlüsselbetätigtes Schloss

Country Status (3)

Country Link
EP (1) EP0042756B1 (de)
AT (1) ATE9374T1 (de)
DE (1) DE3166005D1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926592A (zh) * 2011-11-25 2013-02-13 叶剑清 环形对吸旋转磁极定位、离合锁

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1911413C3 (de) * 1969-03-06 1974-02-14 Fa. Carl Sievers, 5628 Heiligenhaus Sperrvorrichtung in einem magnetbetätigbaren Schloß
DE2132917A1 (de) * 1971-07-02 1973-01-18 Huwil Werke Gmbh Magnetisch betaetigbares schloss
US4133194A (en) * 1976-12-02 1979-01-09 Bruce S. Sedley Magnetic key operated door lock

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102926592A (zh) * 2011-11-25 2013-02-13 叶剑清 环形对吸旋转磁极定位、离合锁
CN102926592B (zh) * 2011-11-25 2014-12-24 叶剑清 环形对吸旋转磁极定位、离合锁

Also Published As

Publication number Publication date
EP0042756A1 (de) 1981-12-30
DE3166005D1 (en) 1984-10-18
ATE9374T1 (de) 1984-09-15

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