EP0637664B1 - Kombinationsschloss - Google Patents
Kombinationsschloss Download PDFInfo
- Publication number
- EP0637664B1 EP0637664B1 EP94305578A EP94305578A EP0637664B1 EP 0637664 B1 EP0637664 B1 EP 0637664B1 EP 94305578 A EP94305578 A EP 94305578A EP 94305578 A EP94305578 A EP 94305578A EP 0637664 B1 EP0637664 B1 EP 0637664B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cam plate
- fence lever
- spring
- lock
- spring means
- 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
Links
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
- E05B37/00—Permutation or combination locks; Puzzle locks
- E05B37/08—Permutation or combination locks; Puzzle locks with tumbler discs on a single axis, all the discs being adjustable by a rotary knob which is not shifted for adjusting the discs
Definitions
- This invention relates to combination locks. More particularly, the invention relates to tumbler scrambling manipulation combination locks, of the kind including a housing with a lock dial shaft rotatably mounted therein, a lock bolt movable in the housing, a fence lever pivotally coupled to the lock bolt, a spring means constantly urging the fence lever into an operative lock bolt displacing position thereof, an assembly of gated tumbler wheels rotatable by the lock dial shaft, and a slotted driver disc mounted on the tumbler wheel assembly, the fence lever being adapted to close against the said gated tumbler wheels when in alignment therewith and thereby enter its operative position to enable the displacement of the lock bolt by the fence lever.
- Such a combination lock is known from GB-A-735 148, which represents the closest prior art, and US-A-2 601 774.
- an assembly comprising a displaceable cam plate coupled to a cam disc associated with the slotted driver disc and a second spring means coupled between the fence lever and the cam plate, and acting in opposition to the first spring means, the assembly operating such that on every revolution of the cam disc the cam plate is displaced thereby varying the tension in the second spring means so that the fence lever moves between a non-operative position when the cam plate is in its non-displaced position and an operative position when the cam plate is in its displaced position depending on the balance of the forces exerted on the fence lever by the first and second spring means.
- a conventional combination lock mechanism generally denoted 10 disposed within a housing 12.
- the mechanism 10 comprises a plurality of tumbler wheels, generally denoted W (the upper, exposed tumbler wheel is designated W1), axially mounted and coupled to a lock shaft 14. Every tumbler wheel is provided with a recess or gate G (for example the tumbler wheel W1 comprises a gate G1).
- the gates G of all wheels become aligned, so that fence arm feeler pin 16'' (shown only from above) can enter into the space formed by the gates G and, thereby, nose 16' of the pivoted, spring-biased fence lever 16 enters cam slot 18' of driver disc 18.
- a spring 20 is coupled to the fence lever 16 for normally urging the fence lever 16 into its active, gates penetrating position.
- the driver disc 18 is keyed to the lock shaft 14 by key 22. Turning the lock shaft 14 from the outside of the door by the dial knob (not shown) causes the withdrawal of lock bolt 24 to open the door. All these features of construction and operation are well-known and need not be further described in the present context.
- a driver disc 118 provided according to the present invention is of a little smaller diameter than the disc 18 of the conventional lock mechanism of Fig. 1. Furthermore, the disc 118 is formed with an upwards protruding, concentric cam disc 126 (which may conveniently be integrally made with the driver disc 118). The cam disc 126 is circular except for a segment 126' which is removed or cut away as shown. The location of the segment 126' relative to the fence lever nose engaging recess 118' is preset according to a functional consideration explained below.
- the fence lever 116 having the conventional fence feeler pin 116" further comprises a tiny bore 128 for a purpose to be described further below.
- the cam spring plate comprises a generally U-shaped opening 132, configured at one side with a radius 132' somewhat larger than that of the cam disc 126, and at its other side with a linear surface 132".
- the cam plate 130 further comprises at its other end U-shaped cut-off 134 configured to slidingly receive between its legs 134a and 134b the head portion of the conventional bolt 136.
- An opening 138 which is preferably but not necessarily elongated, is provided in the cam plate 130 at a portion 139 thereof, which extends in the direction of the respective housing wall (see Fig. 4), and comprises a linear surface 139'.
- a profiled wire spring 140 comprising four portion 140a, 140b, 140c and 140d which are bent away relative to each other as shown.
- the portion 140a is inserted from above into the opening 128 of the fence lever 116 and the portion 140d, in turn, is inserted from below into the opening 138 of the cam spring plate 130.
- the tension of the wire spring 140 is such that in one position of the cam plate 130 relative to the fence lever 116 (as explained below), the spring 140 overcomes the force of the spring 120, and in another position of the plate the spring 120 overcomes the attraction of the spring 140.
- the cam plate 130 In the assembled state of the lock 110, the cam plate 130 is seated over both the driver disc 118 and the fence lever 116.
- the cam disc 126 freely fits into the opening 132, and the bolt 136 into the cut-out 134.
- the spring 140 is installed as described above so that in the depicted, inoperative position of the lock, the spring is in tension, biasing the portion 140b to move in the clockwise direction (as seen in Fig. 3), so that the lever 116 is constantly pushed away from the tumbler wheels engaging position, i.e. neutralizing the force of the spring 120. Therefore, for as long as the cam plate 130 is stationary, no contact will be made between the lever 116 and the driving disc 118.
- the cam plate 130 During rotation of the driver disc 118 (and of the cam disc 126) by the dial shaft 114 in the conventional manner, the cam plate 130 remains in fact stationery, except for when the cut-away segment 126' becomes operative - see Fig. 4 - namely once on every full rotation. At such point, the displacement of the cam plate 130 by a small distance (to the right) under the influence of the spring 140 relieves some of the tension of the spring, so that it no longer overcomes the force of the spring 120. The spring 120 therefore moves the lever 116 towards its operative position allowing momentary contact of the fence feeler pin 116" against the rim of the tumbler W or of the nose 116' into the engaging recess 118', if the proper combination dialling has been completed.
- the manipulation tampering method is based on the fact that, in the known lock, the nose 16' of the fence lever 16 (Fig. 1) becomes released from the outer contour of the driver disc 18, to somewhat enter into and then withdraw from the slot 18' in a cyclic fashion, and that the skilled manipulator is able to detect these two occurrences ("contact points").
- the nose 116' is held out of contact with the driver disc 118' except for the momentary contact area during each revolution of the disc. It is thus clear that due to the operation of the cam plate 130, such tempering method is completely obviated.
- the dial shaft must be rotated in a reverse direction (from the "0" position).
- the nose portion 116' will become engaged by the cam slot 118', as shown in Figure 4, and the lock bolt 124 may thus be displaced into its unlocked, withdrawn position , Fig. 4.
- the application of the present invention is extremely simple and low-cost. It involves the addition of only two additional components (cam plate 130 and spring 140) and minor alteration of the driver disc 18; the general design of the convention lock is not upset whatsoever, which renders the incorporation of the extra parts in most existing models of non-manipulation-proof combination locks fairly convenient.
Landscapes
- Lock And Its Accessories (AREA)
Claims (4)
- Kombinationsschloß mit einem Gehäuse (112) mit einer Schloß-Wählwelle (114), die hierin drehbar angebracht ist, einem Sperrbolzen (124), der im Gehäuse (112) beweglich ist, einem Führungshebel (116), der schwenkbar mit dem Sperrbolzen (124) gekoppelt ist, Federmitteln (120), die ständig den Führungshebel (116) in seine wirksame, den Sperrbolzen versetzende Lage belasten, eine Anordnung (W) aus mit einer Aussparung versehenen Zuhaltungsrädern (W1), die von der Schloß-Wählwelle (114) drehbar sind, und einer geschlitzten Antriebsscheibe (118'), die an der Zuhaltungsradanordnung (W) angebracht ist, wobei der Führungshebel (116) dazu eingerichtet ist, mit den genannten Zuhaltungsrädern (W) in schlüssigen Eingriff zu treten, wenn er sich in Ausrichtung hierauf befindet, und dadurch in seine wirksame Lage zu gelangen, um die Versetzung des Sperrbolzens (124) durch den Führungshebel (116) zu ermöglichen, gekennzeichnet durch eine Anordnung, die eine verschiebliche Nockenplatte (130) aufweist, die mit einer Nockenscheibe (126) gekoppelt ist, die der geschlitzten Antriebsscheibe (118') zugeordnet ist, und zweite Federmittel (140), die zwischen dem Führungshebel (116) und der Nockenplatte (130) angekoppelt sind und den ersten Federmitteln entgegenwirken, wobei die Anordnung auf eine solche Weise wirksam wird, daß bei jeder Umdrehung der Nockenscheibe (126) die Nockenplatte (130) versetzt wird und hierdurch die Spannung in den zweiten Federmitteln (140) so ändert, daß der Führungshebel (116) sich zwischen einer unwirksamen Lage, wenn sich die Nockenplatte in ihrer nicht-versetzten Lage befindet, und einer wirksamen Lage bewegt, wenn sich die Nockenplatte (130) in ihrer versetzten Lage befindet, abhängig vom Gleichgewicht der Kräfte, die auf den Führungshebel (116) von den ersten (120) und zweiten (140) Federmitteln ausgeübt werden.
- Kombinationsschloß, wie beansprucht in Anspruch 1, worin die genannten zweiten Federmittel (140) eine Drahtfeder sind.
- Kombinationsschloß, wie beansprucht in Anspruch 2, worin die Drahtfeder (140) einen ersten Abschnitt (140b) aufweist, der am einen Ende (140a) mit dem Führungshebel (116) verbunden ist, und einen zweiten Abschnitt (140c), der am einen Ende mit der Nockenplatte (130) verbunden ist, wobei die beiden Abschnitte (140b, 140c) unter einem solchen Winkel zueinander angeordnet sind, daß sich die Feder (140) unter Spannung befindet, wenn sich die Nockenplatte (130) in der nicht-verschobenen Lage befindet, in der der erste Abschnitt (140b) gespannt ist, um eine Kraft auf den Führungshebel (116) auszuüben, die die Kraft überwindet, die von den ersten Federmitteln (120) ausgeübt wird, und daß die Spannung der Feder (140) mindestens teilweise entlastet wird, wenn sich die Nockenplatte (130) in der verschobenen Lage befindet, so daß die Kraft, die von den ersten Federmitteln (120) ausgeübt wird, die Kraft überwindet, die auf den Führungshebel (116) von der Drahtfeder (140) ausgeübt wird.
- Kombinationsschloß, wie beansprucht in Anspruch 2 oder Anspruch 3, worin die Nockenplatte (130) mit der Nockenscheibe (126) mittels einer Öffnung (132) mit der allgemeinen Form eines geschlossenen U gekoppelt ist und die Nokkenscheibe (126) kreisförmig ist, mit einem entfernten Segmentabschnitt (126'), der in Eingriff mit der geschlossenen Seite (132") der Öffnung (132) bringbar ist.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IL106534A IL106534A0 (en) | 1993-07-30 | 1993-07-30 | Manipulation proof combination lock |
IL10653493 | 1993-07-30 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0637664A1 EP0637664A1 (de) | 1995-02-08 |
EP0637664B1 true EP0637664B1 (de) | 1997-10-29 |
Family
ID=11065095
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94305578A Expired - Lifetime EP0637664B1 (de) | 1993-07-30 | 1994-07-28 | Kombinationsschloss |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0637664B1 (de) |
CA (1) | CA2119985A1 (de) |
DE (1) | DE69406508T2 (de) |
IL (1) | IL106534A0 (de) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2660873A (en) * | 1949-08-11 | 1953-12-01 | Yale & Towne Mfg Co | Combination lock |
US2601774A (en) * | 1949-09-29 | 1952-07-01 | Diebold Inc | Combination lock |
GB735148A (en) * | 1953-06-19 | 1955-08-17 | Chubb & Sons Lock & Safe Co | Improvements in and relating to permutation locks |
US2807954A (en) * | 1954-07-06 | 1957-10-01 | Harry C Miller | Combination lock |
US3045466A (en) * | 1960-02-08 | 1962-07-24 | Diebold Inc | Manipulation resistive combination lock |
US3176486A (en) * | 1963-07-12 | 1965-04-06 | Diebold Inc | Manipulation resistive combination lock |
US4756176A (en) * | 1985-11-30 | 1988-07-12 | La Gard, Inc. | Fence lever control device for a combination lock |
US4910981A (en) * | 1989-03-17 | 1990-03-27 | Gartner Klaus W | Automatically locking and tumbler scrambling manipulation proof lock |
-
1993
- 1993-07-30 IL IL106534A patent/IL106534A0/xx unknown
-
1994
- 1994-03-25 CA CA002119985A patent/CA2119985A1/en not_active Abandoned
- 1994-07-28 DE DE69406508T patent/DE69406508T2/de not_active Expired - Fee Related
- 1994-07-28 EP EP94305578A patent/EP0637664B1/de not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
DE69406508D1 (de) | 1997-12-04 |
EP0637664A1 (de) | 1995-02-08 |
IL106534A0 (en) | 1993-11-15 |
DE69406508T2 (de) | 1998-03-26 |
CA2119985A1 (en) | 1995-01-31 |
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