EP0515922B1 - Combination lock, especially for suitcase, furniture or similar - Google Patents

Abstract

The invention relates to a combination lock, especially for suitcases or the like, having a plurality of number discs (12), rotatable by rotation into the secret-code open position, and an operating handle, during the opening displacement of which the set secret code changes; to achieve a simple solution advantageous in terms of use, it is proposed that each number disc (12) be assigned a control cam (45) which, during the displacement of the operating handle (35), rotates the number disc into a specific basic position different from the secret code. <IMAGE>

Description

The invention relates to a permutation lock according to the preamble of claim 1.

A permutation lock of the type in question is known from DE-A-3 246 272, the compression spring-loaded, frame-shaped window sash having rungs in the form of material-uniform transverse webs which interact with flattening of the locking sleeves. If the key secret is set correctly after the number disks have been rotated beforehand, the operating handle can be moved in the opening direction with the help of the window sash, the rungs of which face the flattened locking sleeves. The dragging of the window slide by means of the operating handle takes place via the one fork leg of a spring-loaded shoe. During the dragging movement of the window sash, the shoe is moved downwards by control cams, the leg of the shoe releasing the spring-loaded window squeegee for displacement. The operating handle can still be relocated, part of which acts on the control surface of a lever. The latter pivots and kicks against the heart-shaped control curve while rotating the number plate, including the locking sleeves coupled with it. This is made possible because the spring tongues, which have been dragged in the direction of displacement of the operating handle, have come into a release position to the number disks by driving under projections on the housing side.

Furthermore, a permutation lock is known from US-A-4 905 488, in which the number disks are in meshing engagement with toothed wheels, which in turn are equipped with heart-shaped control cams. Each control cam works together with an angle lever which, after the gear wheel has been released, rotates it via the control cam into a specific position.

The object of the invention is to provide a permutation lock of the type in question with a simple structure of increased security value.

This object is achieved in a generic permutation lock by the features specified in the characterizing part of claim 1.

The subclaims relate to advantageous developments of the inventive solution.

As a result of such an embodiment, a generic permutation lock with a simple construction that is favorable in terms of control technology is specified. After turning the number disks into the key secret opening position, the window slide is dragged along by the operating handle, the middle rungs designed as bascule bridges running over the flats of the locking sleeves and then being on the other side of the flats. Although the dials with the locking sleeves have already been rotated, the backward movement of the operating handle can nevertheless be carried out due to the fact that the clapper-type rungs swing out and can thus drive over the locking sleeves. After moving the sash back In the starting position and the swiveling out of the folding bridge-like rungs, they block the area in front of the flattened areas. Then, however, it is no longer possible to move the window sash forward, unless the correct key secret is set again. In terms of control technology, it proves that the bascule bridges designed as rungs have control slopes that point in the return direction, so that the window sash can be moved back with little effort. The reduction in friction when adjusting the spring-loaded rungs when the window sash is moved back is optimized in that each locking sleeve on its flank facing the number plate, starting from the area of the flattening, forms a truncated cone-shaped cross-sectional taper. The displacement of the window slide is used to move a slide transversely to the plane of movement of the window slide via a corresponding coupling engagement, the latter causing the spring tongues to be released. The slide can then be used to apply a lever that moves against the control cam during its transverse movement, the lever turning the number discs back into a neutral position. If only the release of the spring tongues is brought about by the slide, rod-shaped spring elements bring the control cam back into the neutral position. The corresponding rod-shaped spring elements are anchored in the lock case base and are supported on the heart base of the heart-shaped heart opposite the tip of the heart Control curve. A coupling in the manner of a pin / slot control is provided between the window slide and the aforementioned slide, with an idle stroke lying at the beginning of the movement. The window sash can therefore move in the initial phase of its displacement by a certain amount corresponding to the idle stroke, without the number disks being released. For the purpose of changing the key secret, a key secret readjustment device is provided which is locked in the open position of the operating handle by closing the passage of the adjusting lever by means of a projection of the window slide. Therefore, even if the permutation lock is in the open position, the key secret can only be reset if one knows the key secret previously set. A change in the key secret therefore requires that the closed position of the permutation lock be brought about when the container is open. Then turn the number disks according to the key secret set. Subsequently, the locking sleeves can be displaced by means of the adjusting lever, the flats passing through the middle folding bridge-like rungs and the locking sleeves disengaging from the number disks. Then twisting them towards the new key secret respectively. Then the adjustment lever is returned to its starting position. The permutation lock according to the invention can be used favorably in the furniture sector. For example, it is possible to couple the window sash with a central lock. This allows several drawers to be locked or released. Along with a displacement of the window slide, a handlebar is pivoted via a coupling projection which pivots an angle lever. This is equipped with a support pin to control the central locking rod. Depending on the position of the window slide or the operating handle, the central locking rod is moved into one or the other position. Doors equipped with an espagnolette lock can also be coupled with the window slide. For this purpose, a coupling projection of the window slide acts via a link on a control lever which causes the locking of the espagnolette lock. Along with a shift of the operating handle and the window slide, the control lever is pivoted into one or the other position, taking the rotary rod of the rotary rod lock with it. Sliding doors can also be equipped with the permutation lock. Then the coupling projection of the window slide acts on the locking hook of the sliding door lock via a handlebar. Along with a shift in the operating handle and simultaneous entrainment of the window slide, the locking hook is pivoted. The window slide can then be designed in such a way that it forms a bolt tail protruding into the espagnolette lock. This is attacked by a rotary nut which represents the operating handle. The permutation lock is then actuated by turning the operating handle. In a modified permutation lock, overload protection can thereby be avoided Realize that the axle pin of the lever is mounted to avoid spring loading. It cannot therefore occur that, when the operating handle is in the open position, when the control cam is acted upon by the lever, turning the number plate leads to destruction of the lock mechanism. Rather, with such a rotation, the pivot of the lever can deflect against spring loading. Due to the spring load, it is also realized that after a possible rotation of the number disk in such a case, it always returns to its neutral position. In a simple manner, the storage is formed by slots pointing towards the floor. When the overload protection comes into effect, these allow the axle journal to move in the direction of the ground. However, the spring load always leads the journal back to its starting position by acting on the bottom of the slot. For example, the spring load acting on the axle journal can be formed by bar springs running transversely to the housing, which act on the end sections of the axle journal. Another overload protection device is a spring-loaded slip clutch between the window sash and the operating handle / rotating nut. If the permutation lock assumes its locking position, no major forces can be directed into the lock mechanism. As soon as the rungs of the window slide step against the locking sleeves and prevent further displacement of the window slide, the slip clutch allows a further displacement of the operating handle / wrench, so that only the rungs step against the locking sleeves with a predeterminable force. In particular, this measure proves to be advantageous in the case of a rotary nut-operated permutation lock, since relatively large forces can be applied here. This overload protection sees in detail so that the rotary nut is coupled with a rotary actuating handle in such a way that there is a rib / groove engagement which can be disengaged against the action of the spring. This assigned control bevels allow an axial displacement of the rotary operating handle relative to the turning nut while lifting the ribs / Nutein handle with increasing load. The spring loading is achieved by means of a compression spring arranged in a cup-shaped recess in the rotary actuation handle. This is accordingly in a hiding position and does not take up additional space. The compression spring is supported on a plate arranged on the front end of the axis of rotation of the rotary actuation handle. Since the axis of rotation is stationary, this leads to the fact that the rotary actuation handle can be displaced relative to the turning nut against the force of the compression spring. This is the case if there is greater resistance in the lock setup, for example if the key secret is not set correctly.

Fig. 1

eine perspektivische Darstellung eines Schubladen aufweisenden Möbelstücks. wobei die obere Schublade mit einem Permutationsschloß gemäß der ersten Ausführungsform ausgestattet ist,

Fig. 2

eine Ansicht der Schublade im Bereich des Permutationsschlosses,

Fig. 3

eine Draufsicht auf das seine Verschlußstellung einnehmende Permutationsschloß, vergrößert dargestellt,

Fig. 4

den Schnitt nach der Linie IV-IV in Figur 3,

Fig. 5

den Schnitt nach der Linie V-V in Figur 4,

Fig. 6

den Schnitt nach der Linie VI-VI in Figur 4, wobei die Zahlenscheibe nebst Sperrhülse in eine bestimmte, vom Schlüsselgeheimnis abweichende Grundstellung verdreht ist,

Fig. 7

eine der Figur 6 entsprechende Darstellung, jedoch bei richtig eingestelltem Schlüsselgeheimnis,

Fig. 8

einen Längsschnitt gemäß Figur 4 durch das Zahlenschloß, jedoch mit auf das Schlüsselgeheimnis eingestellten Zahlenscheiben während der Verlagerung der Bedienungshandhabe mit Fensterschieber in Richtung der Offenstellung,

Fig. 9

den Schnitt nach der Linie IX-IX, wobei über den Schieber eine Entrastung der Zahlenscheiben erfolgt,

Fig. 10

die Folgedarstellung, wobei über die stabförmigen Federelemente die Zahlenscheiben in der Offenstellung in die vom Schlüsselgeheimnis abweichende Grundstellung verdreht sind,

Fig. 11

das Permutationsschloß im Längsschnitt in seiner Offenstellung,

Fig. 12

einen Längsschnitt durch das Permutationsschloß während der Zurückverlagerung der Bedienungshandhabe in die Verschlußstellung, wobei die mittleren Sprossen des Fensterschiebers mit ihren Steuerschrägen gegen die Sperrhülsen treten,

Fig. 13

in stark vergrößerter Darstellung eine Draufsicht auf die Anlenkstelle einer Sprosse,

Fig. 14

den Schnitt nach der Linie XIV-XIV in Figur 13,

Fig. 15

einen Längsschnitt durch das Permutationsschloß in einer weiteren Zwischenstellung, die sich beim Verlagern des Fensterschiebers in die Verschlußstellung ergibt,

Fig. 16

einen der Figur 14 entsprechenden Schnitt, jedoch bei entsprechend Figur 15 verschwänkter Sprosse,

Fig. 17

einen Längsschnitt durch das Permutationsschloß in seiner Verschlußstelllung, wobei zwecks Veränderung des Schlüsselgeheimnisses der Einstellhebel mit den Sperrhülsen verlagert ist,

Fig. 18

in stark vergrößerter Ausschnittsdarstellung den Schnitt nach der Linie XVIII-XVIII in Figur 4, also die Verschlußstellung betreffend,

Fig. 19

den Schnitt nach der Linie XIX-XIX in Figur 11, die Offenstellung des Permutationsschlosses betreffend,

Fig. 20

den Schnitt nach der Linie XX-XX in Figur 1,

Fig. 21

den Schnitt nach der Linie XXI-XXI in Figur 20,

Fig. 22

den Schnitt nach der Linie XXII-XXII in Figur 20,

Fig. 23

eine der Figur 20 entsprechende Darstellung, jedoch bei die Offenstellung einnehmendem Permutationsschloß,

Fig. 24

einen horizontalen Schnitt durch das Möbelstück auf Höhe des Permutationsschlosses, die Verschlußstellung betreffend,

Fig. 25

in Übereinanderdarstellugn die Abdeckplatte des Permutationsschlosses, das Verschlußgehäuse und Abdeckkappe desselben,

Fig. 26

einen Vertikalschnitt durch ein abweichend gestaltetes Möbelstück mit Blick auf die Innenseite einer mit einem Drehstangenschloß ausgestatteten Schranktür, welches Drehstangenschloß mit dem Permutationsschloß gekuppelt ist, betreffend die Verschlußstellung,

Fig. 27

in vereinfachter Darstellung einen Schnitt durch das Treibstangenschloß sowie das den Lenker und den Steuerhebel aufnehmende Adaptergehäuse,

Fig. 28

den Schnitt nach der Linie XXVIII-XXVIII in Figur 27,

Fig. 29

einen der Figur 27 entsprechenden Schnitt, betreffend die Offenstellung,

Fig. 30

den Schnitt nach der Linie XXX-XXX in Figur 29,

Fig. 31

einen Schnitt durch das einen Lenker und den Schließhaken einer Schiebetür aufnehmende Adaptergehäuse mit Blick auf die Innenseite einer vertikal verlagerbaren Schiebetür eines Möbelstückes, die Verschlußlage betreffend,

Fig. 32

eine der Figur 31 angepaßte Darstellung mit in Öffnungsstellung befindlichem Schließhaken,

Fig. 33

einen Querschnitt durch ein abweichend gestaltetes Permutationsschloß, wobei die Drehverstellung der Zahlenscheiben über einen vom Schieber gesteuerten Hebel erfolgt gemäß der Verschlußstellung des Permutationsschlosses,

Fig. 34

eine der Figur 33 ähnliche Darstellung, und zwar bei richtig eingestelltem Schlüsselgeheimnis der Zahlenscheiben,

Fig. 35

die Folgedarstellung bei Verlagerung der Bedienungshandhabe in Richtung der Offenstellung bei gleichzeitiger Entrastung der Zahlenscheiben,

Fig. 36

einen der vorangegangenen Darstellung entsprechenden Schnitt gemäß der Offenstellung des Permutationsschlosses, wobei die Zahlenscheiben in die vom Schlüsselgeheimnis abweichende Grundstellung gedreht sind,

Fig. 37

eine Draufsicht auf das Permutationsschloß gemäß einer weiteren Ausgestaltung, wobei der Fensterschieber den Riegelschwanz eines Drehstangenschlosses ausbildet gemäß der Verschlußstellung des Permutationsschlosses,

Fig. 38

eine der Figur 37 angepaßte Darstellung, jedoch während der Schließdrehung der Nuß in die Öffnungsstellung des Permutationsschlosses,

Fig. 39

das Permutationsschloß in seiner Öffnungsstellung,

Fig. 40

einen Querschnitt durch das Permutationsschloß gemäß der Verschlußstellung mit auf das Schlüsselgeheimnis eingestellten Zahlenscheiben,

Fig. 41

eine der Figur 40 entsprechende Darstellung, jedoch die Offenstellung betreffend,

Fig. 42

den Schnitt nach der Linie XLII-XLII in Figur 39,

Fig. 43

den Schnitt nach der Linie XLIII-XLIII in Figur 42,

Fig. 44

den Schnitt nach der Linie XLIV-XLIV in Figur 42,

Fig. 45

eine Frontansicht eines abweichend gestalteten Permutationsschlosses, welches eine Drehbetätigungshandhabe besitzt,

Fig. 46

einen Längsschnitt durch das Permutationsschloß in seiner Verschlußstellung,

Fig. 47

den Schnitt nach der Linie XLVII-XLVII in Fig. 46,

Fig. 48

eine der Fig. 47 entsprechende Darstellung, wobei abweichend von dieser die Offenstellung vorliegt mit gegen die Steuerkurve getretenem Hebel,

Fig. 49

die Folgedarstellung der Fig. 48, wobei in der Offenstellung die Zahlenscheibe verdreht wird,

Fig. 50

eine Teildraufsicht auf das betätigungsseitige Ende des Permutationsschlosses bei abgenommener Blendplatte und bei in Verschlußstellung befindlichem Fensterschieber,

Fig. 51

eine Darstellung gemäß Fig. 50, und zwar bei ausgelöster Rutschkupplung,

Fig. 52

ebenfalls eine der Fig. 50 entsprechende Darstellung, wobei der Fensterschieber bei richtig eingestellter Permutation in die Offenstellung verlagert ist,

Fig. 53

den Schnitt nach der Linie LIII-LIII in Fig. 50 und

Fig. 54

die der Fig. 53 entsprechende Darstellung, jedoch bei ausgelöster Rutschkupplung.

Several exemplary embodiments of the invention are explained below with reference to the drawings. It shows:

Fig. 1

a perspective view of a piece of furniture. the upper drawer being equipped with a permutation lock according to the first embodiment,

Fig. 2

a view of the drawer in the area of the permutation lock,

Fig. 3

2 shows a plan view of the permutation lock taking up its locked position, shown enlarged,

Fig. 4

the section along the line IV-IV in Figure 3,

Fig. 5

the section along the line VV in Figure 4,

Fig. 6

4 shows the section along the line VI-VI in FIG. 4, the number disk and the locking sleeve being rotated into a specific basic position which differs from the key secret,

Fig. 7

6 shows a representation corresponding to FIG. 6, but with the key secret correctly set,

Fig. 8

4 shows a longitudinal section according to FIG. 4 through the combination lock, but with the number disks set to the key secret during the shifting of the operating handle with window slide in the direction of the open position,

Fig. 9

the section along the line IX-IX, with the number disks being released via the slide,

Fig. 10

the subsequent representation, the number disks being rotated in the open position into the basic position deviating from the key secret via the rod-shaped spring elements,

Fig. 11

the permutation lock in longitudinal section in its open position,

Fig. 12

a longitudinal section through the permutation lock during the shifting back of the operating handle into the closed position, the middle rungs of the window sash step against the locking sleeves with their bevels,

Fig. 13

in a greatly enlarged representation a plan view of the articulation point of a rung,

Fig. 14

the section along the line XIV-XIV in Figure 13,

Fig. 15

a longitudinal section through the permutation lock in a further intermediate position, which results when the window slide is moved into the closed position,

Fig. 16

14 shows a section corresponding to FIG. 14, but with the rung twisted according to FIG. 15,

Fig. 17

2 shows a longitudinal section through the permutation lock in its locked position, the adjusting lever with the locking sleeves being shifted for the purpose of changing the key secret,

Fig. 18

in a greatly enlarged sectional view of the section along the line XVIII-XVIII in Figure 4, ie regarding the closed position,

Fig. 19

the section along the line XIX-XIX in Figure 11, regarding the open position of the permutation lock,

Fig. 20

the section along the line XX-XX in Figure 1,

Fig. 21

the section along the line XXI-XXI in Figure 20,

Fig. 22

the section along the line XXII-XXII in Figure 20,

Fig. 23

20 shows a representation corresponding to FIG. 20, but with the permutation lock taking the open position,

Fig. 24

a horizontal section through the piece of furniture at the level of the permutation lock, regarding the locking position,

Fig. 25

the cover plate of the permutation lock, the lock housing and the cover cap of the same,

Fig. 26

2 shows a vertical section through a piece of furniture of different design with a view of the inside of a cabinet door equipped with an espagnolette lock, which espagnolette lock is coupled to the permutation lock, with respect to the locking position,

Fig. 27

in a simplified representation a section through the connecting rod lock and the adapter housing accommodating the handlebar and the control lever,

Fig. 28

the section along the line XXVIII-XXVIII in Figure 27,

Fig. 29

27 a section corresponding to FIG. 27, relating to the open position,

Fig. 30

the section along the line XXX-XXX in Figure 29,

Fig. 31

FIG. 2 shows a section through the adapter housing receiving a handlebar and the locking hook of a sliding door with a view of the inside of a vertically displaceable sliding door of a piece of furniture, regarding the locking position,

Fig. 32

FIG. 1 a representation adapted to FIG. 31 with the locking hook in the open position,

Fig. 33

3 shows a cross section through a differently designed permutation lock, the rotary adjustment of the number disks being carried out via a lever controlled by the slide in accordance with the closed position of the permutation lock,

Fig. 34

33 shows a representation similar to FIG. 33, namely with the key secret of the number disks correctly set,

Fig. 35

the subsequent display when the operating handle is shifted in the direction of the open position with simultaneous unlocking of the number disks,

Fig. 36

1 shows a section corresponding to the previous illustration, according to the open position of the permutation lock, the number disks being rotated into the basic position which differs from the key secret,

Fig. 37

2 shows a top view of the permutation lock according to a further embodiment, the window slide forming the bolt tail of an espagnolette lock in accordance with the closed position of the permutation lock,

Fig. 38

37 shows a representation adapted to FIG. 37, but during the closing rotation of the nut in the open position of the permutation lock,

Fig. 39

the permutation lock in its open position,

Fig. 40

a cross section through the permutation lock according to the locking position with number disks set on the key secret,

Fig. 41

a representation corresponding to FIG. 40, but relating to the open position,

Fig. 42

the section along the line XLII-XLII in Figure 39,

Fig. 43

the section along the line XLIII-XLIII in Figure 42,

Fig. 44

the section along the line XLIV-XLIV in Figure 42,

Fig. 45

2 shows a front view of a differently designed permutation lock, which has a rotary actuation handle,

Fig. 46

a longitudinal section through the permutation lock in its closed position,

Fig. 47

the section along the line XLVII-XLVII in Fig. 46,

Fig. 48

a representation corresponding to FIG. 47, with the open position deviating from this is present with the lever stepping against the control curve,

Fig. 49

48, the number plate being rotated in the open position,

Fig. 50

2 shows a partial top view of the actuation-side end of the permutation lock with the cover plate removed and with the window slide in the closed position,

Fig. 51

50, namely when the slip clutch is triggered,

Fig. 52

likewise a representation corresponding to FIG. 50, the window slide being shifted into the open position when the permutation is set correctly,

Fig. 53

the section along the line LIII-LIII in Fig. 50 and

Fig. 54

the representation corresponding to FIG. 53, but when the slip clutch is triggered.

According to the first exemplary embodiment, shown in FIGS. 1 to 25, a permutation lock 1 designed according to the invention is assigned to a piece of furniture 4 having drawers 2, 3. The closure housing 5 of the permutation lock is let into the front plate 3 '. The closure housing 5, which is designed in the form of an elongated box, has a base 6 with transverse side walls 7, 8 and longitudinal side walls 9, 10 extending therefrom.

In the upper region, the transverse side walls 7, 8 carry an undrotatable, immovable axis of rotation 11 for receiving number disks 12 of circular cross-section which are arranged next to one another at a distance. Each number plate 12 is in coupling tooth engagement to a respective rotatable on the axis of rotation 11 locking sleeve 13 which passes through a central bore of the number plate 12, so that there is an indirect storage thereof on the axis of rotation 11. To produce the coupling engagement, a radially directed projection 14 extends from each locking sleeve 13 and engages in a tooth gap 15 of the number plate 12 in a form-fitting manner. There are ten such tooth gaps in the same circumferential distribution on each number plate 12, so that the locking sleeve 13 can assume ten different positions relative to the number plate 12.

A compression spring 16 arranged on one free end of the axis of rotation 11 loads the locking sleeves 13 in the engagement direction via a plate 17. The displacement of the plate 17 is limited by two webs 18 directed towards the housing and extending from the longitudinal side walls 9, 10. In the webs 18 existing through the plate 17 pins 19 serve as a rotation lock for the plate 17. The webs 18 ensure that the spring force by the plate 17 supported on them no longer acts on the locking sleeves 13. In the coupling position of the locking sleeves 13, radially projecting collars 20 of the locking sleeves 13 engage in recesses 21 facing them on the broad sides of the number disks 12 in a form-fitting manner.

Each locking sleeve 13 has a truncated cone-shaped annular collar 22 which starts from it and is provided with a flattened portion 23. The cross-sectional taper points in the direction of the number plate 12 coupled to it.

All locking sleeves 13 are arranged on the axis of rotation 11 so that they abut each other. An intermediate ring 24 is assigned to the locking sleeve 13 facing the transverse side wall 8. The bearing eye 25 of an adjusting lever 26, which is displaceably arranged on the axis of rotation 11 and passes through a U-shaped slot 27 in the bottom 6 of the closure housing 5, acts against this. Aligned with the slot 27 is a recess of a cover cap 28 which is U-shaped in cross section and extends over the closure housing 5 from below. The slot 27 is composed of a slot section 27 'running parallel to the axis of rotation 11 and two slot sections 27' arranged at right angles to this. 'and 27' ''. The setting lever 26 is moved from the slot section 27 '' into the slot section 27 '' 'exclusively for the purpose of changing the key secret, cf. Dash-dotted representation in Figure 18. A displacement of the adjusting lever 26 causes a displacement of the locking sleeves 13 against spring action, the coupling engagement between the radially directed projections 14 of the locking sleeves 13 and the number disks 12 is canceled. Then these can be brought into a different rotational position and, after returning the adjusting lever 26 to the starting position, come into clutch engagement, the flats 23 of the locking sleeves 13 coming into a different position to the number disks 12.

Each number disk 12 is provided on its circumference with ten latching cutouts 29 arranged in the same angular distribution. Between these, each number plate carries the digits from 0 to 9 corresponding to the ten different coupling positions of the locking sleeves 13 the number disks 12. When the key secret is set correctly, the number disks 12 are rotated with the locking sleeves 13 in such a way that their flats 23 face away from the bottom 6 of the closure housing 5 and run parallel to a window slide 30. The latter is frame-shaped and has a shorter length than the lock housing 5. One frame cross leg 31 is wider than the other frame cross leg 32 and forms a hole 33 in the middle for engaging the coupling pin 34 of an operating handle 35. Extending between the latter and the window slide 30 is a cover plate 36 which overlaps the closure housing 5 and is provided with recesses 37 in flush alignment with the number disks 12.

The window slide 30 is supported by the webs 18 as well as by further webs 38 of the longitudinal side walls 9.10. The frame longitudinal leg 39 facing the longitudinal side wall 10 continues in the direction of the housing into a bend 40. This is provided with two pins 41 arranged one behind the other at the same height and pointing in the direction of the longitudinal side wall 10, which engage in angular slots 42 of a slide 43. This is guided between the webs 18 and 38 and between the longitudinal side wall 10 and the bend 40. The slide 43 thus extends parallel to the axis of rotation 11 and is displaced transversely to its plane of movement when the window slide 30 is displaced by means of the operating handle 35.

The angular slot 42 is composed of a short slot section 42 ', which is oriented parallel to the axis of rotation 11, and a longer slot section 42''which rises to it. In the locked position of the permutation lock, cf. in particular FIGS. 3 and 4, is the pin 41 at the end of the slot portion 42 '. As long as the pin 41 moves in the slot section 42 ', there is no displacement of the slide 43. There is thus an idle stroke of the window slide 30 to the slide 43.

Each number plate 12 is assigned a locking lever 44, the free end 44 'of which is supported on the lower edge of the slide 43. Furthermore, the locking lever 44 engages with a locking tooth 44 ″ in one of the locking cutouts 29 of the number plate 12. According to the first embodiment, the locking lever 44 is made of the same material from the longitudinal side wall 9 of the closure housing 5, which is preferably made of appropriate plastic.

Each number plate 12 forms a control curve 45 on the broad surface opposite the recess 21. This is designed as a disk with a heart-shaped circumference. The tip 45 'of the heart-shaped control curve points into the area between two mutually adjacent latching cutouts 29. A rod-shaped spring element 46 is supported on the heart base 45' 'opposite the heart tip, which runs either flat or fluted. The spring element 46 is anchored in the closure housing base 6. It can therefore never occur that the force component exerted by the spring element 46 is conducted into the heart tip 45 '.

The locking sleeves 13 act together with middle rungs 47 of the window slide 30. In the closed position, cf. 3 and 4 in particular, the rungs 47 extend at a short distance in front of the annular collar 22 of the locking sleeves 13. The rungs 47 are supported by means of end journals 48 which enter into cross-section-adapted bores 50 of the longitudinal frame legs 39, 39 '. These rungs 47 are designed as spring-loaded bascule bridges, which extend beyond the flats 23 of the locking sleeves 13. A torsion spring 50 assigned to a bearing journal 48 is used to spring load each bascule bridge or rung 47, which is supported on the one hand on the longitudinal frame leg 39 and on the other hand on a stop web 51 which overlaps the latter. Each rung 47 forms a blocking edge 47 'on its side facing the operating handle 35, to which a control bevel 47''in the return direction adjoins at an acute angle. Their angle corresponds to that of the frustoconical cross-sectional tapering of the ring collar 22.

The frame cross leg 31 bears a projection 52, which lies in the open position of the lock in front of the adjusting lever 26 and thus extends in the passage thereof.

The projection 52 is surmounted by a coupling pin 53. This passes through a slot in both the bottom 6 and the cover cap 28 and engages in an elongated hole 54 of an adapter housing 55. The latter is screwed onto the back of the front plate 3 'of the drawer 3 and is also connected to the cover plate 35 while simultaneously fixing the lock housing 5.

The coupling pin 53 passes through a bore 56 of a link 57, which in turn articulates on an angle lever 58. A pin 59 arranged in the region of the angle apex serves to support the same. The longer leg of the angle lever 58 has a support pin 60 at its end. This supports a curved slot 61 of the housing 55 arranged concentrically to the bearing pin 59 and acts on a cross bolt 62 on upper end of a central locking rod 63. This in turn is guided in bearings 64 of one side wall 4 'of the piece of furniture 4. Below the cross bolt 62, the central locking rod 63 carries a locking projection 65 which, in the closed position of the permutation lock, lies in front of a laterally protruding projection 66 of the one longitudinal wall 3 '' of the drawer 3 pointing in the direction of the side wall 4 '. The lower drawer 2 is blocked in the same way.

The following mode of action occurs:
If the predetermined key secret is not set by turning the number disks 12 to open the permutation lock, the rungs 47 act on the ring collars 22 of the locking sleeves 13 when the operating handle 35 is shifted in an attempted opening Figure 7, in which the flats 23 run parallel to the rungs 47. The operating handle 35 can now be moved in the direction of the arrow x while simultaneously taking the window slide 30 with it. Its pin 41 passes through the slot section 42 'in an empty path. In the meantime, the rungs 47 run over the annular collar 22 of the locking sleeves 13. As soon as the pins 41 dip into the obliquely rising slot sections 42 ″, this causes the slide 43 to move downward in the direction of the arrow y. Its lower edge acts on the spring tongues 44, cf. FIG. 9. The locking teeth 44 ″ accordingly leave the locking cutouts 29 of the number disks 12 assigned to them. The tensioned spring elements 46 can now take effect by moving the number disks 12 into a certain basic position deviating from the key secret via the heart-shaped control cam 45 twist. The rotational displacement has ended when the heart base 45 ″ lies opposite the spring element 46, cf. FIG. 10. At the same time, the locking sleeves 13 coupled to the number disks 12 have also rotated, so that their flats 23 have assumed a different position. This means that the annular collar 22 of the locking sleeves 13 lie in the path of movement of the rungs 47.

When the operating handle 35 is moved in the direction of the arrow x into the open position, the projection 52 is carried along. This is then in front of the adjusting lever 26. Furthermore, the coupling pin 53 extending from the projection 52 has shifted the handlebar 47 and rotated the angle lever 58 by this, cf. Figure 23. The support pin 60 at the free end of the angle lever 58 allows the central locking rod 63 to be lowered. As a result, the locking projection 65 moves away from the projection 66 of the drawer 3. Only this and the drawer 2 can be pulled out.

Locking the drawers 2, 3 requires the inserted position of the same. Then the operating handle 35 is to be shifted in the direction of the arrow z, the window slide 30 being carried along. Its rungs 47 step with their control bevel 47 ″ against the frustoconical flank of the ring collar 22, cf. 12, 15 and 16. As a result, the rungs 47 designed as bascule bridges pivot against spring loading. As soon as the rungs have passed the annular collar 22 of the locking sleeves 13, the rungs 47 pivot into their stop-limited locking position. With the relocation of the window slide 30, the slide 43 is moved back by the pin / slot engagement in the direction of the window slide with the release of the spring tongues 44, the Immerse the locking teeth 44 '' in the shape of the locking cutouts 29 of the number disks 12 and adjust them in a locking manner.

With the displacement of the window slide 30, the link 57 is also taken over the coupling pin 53, which gives away the angle lever 58 and raises the central locking rod 63 by means of the support pin 60 and transverse bolt 62, the locking projections 65 of which come in front of the projections of the drawers 2, 3 and secure them .

If a change in the key secret set is desired, the operating handle 35 is to be shifted from its open position into the closed position according to FIG. 17 when the drawer 3 is open. Then, the protrusion 52 of the window pusher 30 clears the passage for the adjustment lever 26 of the key secret resetting device. The free end of the adjusting lever 26, since it passes through a slot of the adapter housing 55 which has the same contour as the slot 27, can be grasped when the drawer 3 is open and can be inserted from the slot section 27 '' into the slot section 27 ''', cf. Fig. 18. The locking sleeves 13 are moved over the intermediate ring 24 with simultaneous tensioning of the compression spring 16, cf. Figure 17. The radial projections 14 of the locking sleeves 13 consequently come out of engagement with the tooth gaps 15 of the number disks 12. These can now be rotated relative to the locking sleeves 13 while adjusting the new key secret. If the adjusting lever 26 is now moved back, the coupling of the locking sleeves 13 to the number disks 14 takes place.

The specific basic position deviating from the key secret can be such that the digits used for the assessment are then zeros.

According to FIGS. 26 to 30, the permutation lock 1 works together with an espagnolette lock 67. The latter is fixed on the inside of a door 68. The espagnolette lock 67 has a bolt 69 and a bushing 71 penetrated by the pivot rod 70. The bushing 71 is rotated as a function of the closing movement of the bolt 69. Locking hooks 72 are provided on the free ends of the pivot rod 70, which in the closed position of the permutation lock pins on the cabinet 73 reach behind.

The opening or closing movement of the permutation lock is transmitted by the coupling pin 53 seated on the window slide 30. This engages in a longitudinal slot 74 of an adapter housing 75 and is coupled to a link 76. The latter articulates in the central region of a control lever 78 which can be pivoted about the bearing journal 77. Its free end dips into a closing recess 79 of the bolt 69. According to FIGS. 27 and 28, the closed position of the permutation lock is present. Both the bolt 69 and the locking hook 72 are in the locking position.

If the open position is to be brought about, after setting the key secret, the operating handle 35 of the permutation lock 1 is to be shifted in the opening direction while taking the window slide 30, the coupling pin 53 of which takes the handlebar 76 with it and pivots the control lever 78. Through this, the bolt 69 is withdrawn and the rotary rod 70 is rotated, whereby the locking hooks 72 reach the pins 73 in a release position, cf. 29 and 30.

FIGS. 31 and 32 illustrate the interaction of the permutation lock with a sliding door lock 80. The coupling pin 53 is now coupled to a link 84 which articulates on a locking hook 81. A bolt 82 of the housing 83 of the sliding door lock 80 is used to support the same. In the closed position of the permutation lock, the locking hook 81 is pivoted over the coupling pin 53 and handlebar 84 in such a way that its free end has entered an opening 85 of a locking plate 86 and this with it Hook underpinned, cf. Fig. 31.

The opening in turn requires the correct key secret to be set by rotating the number disks as well as moving the operating handle in the opening direction while simultaneously taking the coupling pin 53, which pivots the locking hook 81 into the position according to FIG. 32 via the handlebar 84. The sliding door 87, which carries the permutation lock and the sliding door lock, can accordingly be opened in the direction of the arrow.

Figures 33 to 36 illustrate a modified embodiment of the permutation lock 1 '. The same parts have the same reference numbers. According to this version, rod-shaped spring elements are missing, which are constantly supported on the heart-shaped control curve 45. Instead of the rod-shaped spring elements, levers 88 are provided in the same cross-sectional plane with the control cams. Each of these levers 88 is designed as a double lever. Each lever 88 is supported about an axle pin 89 on the lock housing side and oriented parallel to the axis of rotation 11.

The end of the lever 88 facing the slide 43 is in the pin / slot engagement with the slide 43. For this purpose, the shorter lever arm 88 'is equipped with a cross pin 90 which engages in a transverse slot 91 in the lower region of the slide 43. The longer lever arm forms an obliquely rising flank 88 ″ which faces the control curve 45 and which in the closed position, cf. 33, in particular, lies at a distance from the heart-shaped control cam 45. Also in this version of the permutation lock 1 ', a spring tongue 44 is provided, the latching tooth 44' 'of which dips into a latching cutout 29.

If the permutation lock is to be brought into the open position, the key secret must be set by turning the number disks 12. Then the flats 23 of the locking sleeves 13 reach in parallel to the rungs 47 of the window sash, cf. 34. The window slide 30 can now be displaced in the direction of the open position by means of the operating handle 35, a downward control of the slide 43 being forced via the pin / slot engagement 41, 42. At the same time, the lever 88 is pivoted about its axis 89. An intermediate position is shown in Figure 35. Upon further downward displacement, the flank 88 ″ of the lever 88 then hits the circumferential surface of the heart-shaped control cam 45 and rotates it with the number disk 12 and the locking sleeve 13 into the position according to FIG. 36. The tip 45 ′ of the heart curve 45 is thus the number disk 12 assigned that there is a lever arm on the control cam with respect to the axis of rotation 11 in each latching position of the number plate at the time when the control cam 45 is loaded. The direction of force exerted by the lever 88 over its flank 88 ″ can therefore never pass through the heart tip 45 ′ and axis of rotation 11. The permutation is therefore adjusted in the open position, so the key secret is not apparent.

37 to 44 show a further embodiment of the permutation lock 1 ″. The same components have the same reference numbers here. Deviating from this version, the window slider 30 is designed, which continues into a bolt tail 92 of a espagnolette lock 93 which projects beyond the transverse side wall 8. A longitudinal slot-like recess 94 is machined from the free end of the bolt tail 92. A locking engagement recess 95 for the arm 96 of a rotary nut 97 mounted in the espagnolette lock 93 extends from the one narrow edge thereof. Sloping flanks 98, 99 are adjacent to closing engagement opening 95. In the closed position, the radial of the rotating nut passing through the arm 96 runs perpendicular to the oblique flank 98, cf. Fig. 37.

The bolt tail 92 is equipped on its two outer longitudinal flanks with one coupling pin 100 each, which engages in a longitudinal slot 101 of a rotatable coupling piece 102. This receives a rotary rod 107 in a form-fitting manner, so that when the window slide 30 is moved with the bolt tail 92, a rotary displacement of the rotary rods 107 is caused.

Deviating from the permutation lock 1 ″, the spring tongues 103 are designed. They are now mounted about an axis 104 on the housing side. They receive their spring action at their free end 103 'from a compression spring 105 supported on the bottom 6 of the housing 5. Approximately in the central region, the spring tongue 103 forms a locking tooth 106 pointing in the direction of the number plate 12 depending on the rotational position of the number plate 12 with a corresponding latching cutout 29 of the same cooperates. In this solution too, it is realized that when the window slide 30 is displaced from its closed position according to FIG. 40 into the open position according to FIG. 41, the spring tongue 103 is pivoted by releasing the number disk 12. Then, in this solution, the heart-shaped control curve is acted upon 45 also by a rod-shaped spring element 46. The heart tip 45 'is also assigned to the number plate 12 in such a way that the direction of force does not pass through the heart tip, so that the heart curve 45 with the number plate 12 is always rotated in one direction or the other until the bottom of the heart 45 '' rests on the rod-shaped spring element 46 and the rotational displacement ends.

38 shows an intermediate position when closing in the open position. Then the rotating nut 97, which is coupled with a rotatable operating handle, has rotated by approximately 45 °. After another 45 ° rotation, the open position according to FIG. 39 is reached. Then the radial going through the arm 96 runs perpendicular to the oblique flank 99. Along with a displacement of the bolt tail 92 with window slide 30, the rotary rods 107 are taken along via the coupling pieces 102, cf. dash-dotted representation in FIG. 44.

The same components are also provided with the same reference numbers in the permutation lock 1 '''. The window slide 30 also continues into a bolt tail 92, on which a rotary actuation handle 110 engages. This is the holder of a knob 111. By means of the rotary actuation handle 110, a turning nut 97 can be brought from one to the other end position, cf. Fig. 50 and 52. For this purpose the turning nut 97 is also provided with an arm 96 which engages in a locking engagement opening 95 of the bolt tail 92 of the window slide 30.

A slip clutch 112 is switched on between the window slide 30 or bolt tail 92 and the rotary actuation handle 110. For this purpose, the rotary nut 97 is coupled to the rotary actuation handle 110 in such a way that there is a rib / groove engagement which can be disengaged against the spring action. A rib 113 with a trapezoidal cross section extends from the side of the rotary nut 97 facing the rotary actuating handle 110, which rib fits in a form-fitting manner in a diametrical groove 114 of the opposite end of the rotary actuating handle 110. The side flanks of the rib 113 and the groove 114 run towards one another in a roof shape. The rotary nut 97 is mounted on an axis of rotation 115 anchored in the closure housing 5. At the same time, this passes through a bore 117 of the rotary actuation handle 110 opening into a cup-shaped recess 116. The axis of rotation 115 protrudes into the cup-shaped recess 116 and carries a fixed distance there from the recess bottom its connected plate 118. Between this and the base of the recess extends on the axis of rotation 115 a spring designed as a compression spring 119, which maintains the joint engagement between rib 113 and groove 114. Instead of a compression spring, a set of disc springs could also be used to provide a short spring travel to be able to transmit greater forces.

The above-described slip clutch 112 fulfills the task of overload protection. This is the case if the correct key secret is not set. If the rotary actuation handle 110 is displaced by means of the knob 111, the window slide 30 is carried by the rotary nut 97 by a small amount. until its rungs 47 act on the locking sleeves 13. If the rotary actuation handle 110 is displaced further, this leads to a superimposed axial displacement of the rotary actuation handle 110 against the force of the compression spring 119 occurring over the inclined flanks of the rib 113 and the groove 114, cf. Fig. 51 and 54. The composite engagement or the slip clutch 112 is released so that a further displacement of the rotary operating handle 110 does not exert any forces on the lock mechanism.

Furthermore, in this version, the three levers 120 arranged one behind the other are connected to one another by a bridge 121. Cross pins 122 are formed on the shorter lever arm 120 ′ of the outside lever 120, which engage in transverse slots 123 of the slide 43. A shaft journal 124, which extends through the latter and which lies in slots 125 of the closure housing 5 which are open towards the bottom 6, is used to mount the levers 120. Two rod springs 126 extending transversely in the closure housing 5 act on the ends of the axle pin 124 and bring this into abutment position at the bottom of the slots 125, cf. Fig. 47. The longer lever arm, which is supported in the basic position on the bottom 6 of the closure housing, forms a flank 120 ″ interacting with the control curve 45.

The spring tongues 127 assigned to the number disks 12 are mounted about an axis 128 on the housing side. Each spring tongue 127 is equipped with a latching tooth 127 'which engages in a latching cutout of the number disk 12 in a spring-loaded manner. Compression springs 125, which act on the free end of the spring tongues 127, serve for spring loading. The free end of the same lies in the range of movement of the slide 43 and is controlled by it as in the aforementioned exemplary embodiments.

In this version too, moving the window slide 30 requires the correct setting of the key secret by means of the number disks 12. At the same time, the locking sleeves 13 are rotated such that they allow the rungs 47 of the window slide 30 to pass. The window slide 30 effects a downward displacement of the slide 43 via the pin / slot control, the spring tongues 127 being brought out of engagement with the number disks 12. Furthermore, the slider 43 pivots the levers 120, which with their flanks 120 ″ act on the control cam 45 and cause the number disks 12 to rotate into a certain basic position that differs from the key secret, cf. Fig. 48. If the number disc 12 is rotated unnecessarily in this position, a position as shown in Fig. 49 occurs. The sloping flank 120 ″ of the lever 120 is acted upon by the control curve 45. Due to the existing pin / slot engagement between cross pin 122 and cross slot 123, the axle pin 124 is displaced in the downward direction against spring loading, so that no destructive constraining forces occur due to this evasive movement of the lever (s) 120. If the number plate 12 is released from the position according to FIG. 49, the spring load acting on the axle journal 124 brings about the position of the number plate 12 according to FIG. 48.

Another modification of this permutation lock is that the adjusting lever 130 is now designed as a pivot lever. The adjusting lever 130 is mounted around cross pins 131 near its end engaging the axis of rotation 11. A pivoting of the adjusting lever 130 leads to a displacement of the locking sleeves 13 against the compression spring 16 which loads them. A displacement is done when the key secret is to be changed.

Claims (20)

1. Permutation lock, in particular for suitcases, furniture or the like, with several number discs (12) which can be brought into the key code open position by rotation, are mounted on a rotary shaft (11) and are latched by means of spring tongues (44, 103, 127), and locking sleeves (13) associated therewith and comprising flattened portions (23), opposite which locking sleeves is a window slide (30) which is displaceable parallel to the rotary shaft (11) and comprises staves (47) and which can be entrained by an operating handle (35) only in the key code open position, wherein associated with each number disc (12) is a control cam (45) which, as a result of being acted upon during opening displacement of the operating handle (35) and when the spring tongue (44, 103, 127) is brought into the release position in the process, rotates the number disc (12) into a given normal position differing from the key code, characterised in that the central staves (47) of the window slide (30) are constructed as folding bridges which are spring-loaded in the locking direction and move beyond the flattened portions (23) and swing out in the return direction against spring loading.
2. Permutation lock according to claim 1, characterised in that the folding bridges constructed as staves (47) have control ramps (47'') pointing in the return direction.
3. Permutation lock according to claim 1, characterised in that each locking sleeve (13) forms on its flank facing towards the number disc (12), starting from the region of the flattened portion (23), a frustoconically sloping cross-sectional taper.
4. Permutation lock according to claim 1, characterised in that the window slide (30) is in coupling engagement with a slide (43) which causes unlatching of the spring tongues (44, 103, 127) and which extends parallel to the rotary shaft (11) and is movable transversely to the plane of movement of the window slide (30).
5. Permutation lock according to claim 1, characterised in that the slide (43) during its transverse movement acts upon a lever (88) which moves towards the control cam (45).
6. Permutation lock according to claim 1, characterised in that in the bottom (6) of the lock housing is fixed a rod-shaped spring element (46) which is supported on the base (45'') of the heart-shaped control cam (45) opposite the apex (45') of the heart.
7. Permutation lock according to claim 4, characterised by mortise and tenon control (41, 42) between window slide (30) and slide (43) with an idle stroke at the commencement of movement.
8. Permutation lock according to claim 1, characterised by a key code resetting device which is locked in the open position of the operating handle by closing the passage of the adjusting lever (26) by means of a projection (52) of the window slide (30).
9. Permutation lock according to claim 1, characterised in that the window slide (30) is coupled to a central lock (A).
10. Permutation lock according to claim 1 or 9, characterised in that a coupling pin (53) of the window slide (30) engages via a link (57) an angle lever (58) which is provided with a support pin (60) for control of the central locking rod (63).
11. Permutation lock according to claim 1, characterised in that the window slide (30) is coupled to an espagnolette lock (67, 93).
12. Permutation lock according to claim 1 or 11, characterised in that the coupling pin (53) of the window slide (30) engages via a link (76) a control lever (78) which causes bolting of the espagnolette lock (67).
13. Permutation lock according to claim 1, characterised in that the window slide (30) is coupled to a sliding door lock (80).
14. Permutation lock according to claim 1 or 13, characterised in that the coupling pin (53) of the window slide (30) engages via a link (84) a locking hook (81) of the sliding door lock (80).
15. Permutation lock according to claim 1 or 11, characterised in that the window slide (30) forms a bolt tail (92) which extends into the espagnolette lock (93) and which is engaged by a rotary nut (97) forming the operating handle.
16. Permutation lock according to claim 1, characterised in that the axle journal (124) of a lever (12) acting upon the control cam (45) is mounted so as to be capable of yielding against spring loading.
17. Permutation lock according to claim 16, characterised in that the bearing of the axle journal (124) is formed by slots (125) pointing towards the bottom (6).
18. Permutation lock according to claim 15, characterised by a sprung sliding coupling (112) between window slide (30) and operating handle (35)/rotary nut (97).
19. Permutation lock according to claim 15, characterised in that the rotary nut (97) is coupled to a rotary operating handle (110) in such a way that there is rib/groove engagement (113, 114) which can be unlatched against spring action.
20. Permutation lock according to claim 19, characterised in that spring loading is obtained by means of a spring (119) which is arranged in a cup-shaped recess (116) of the rotary operating handle (110) and which is supported on a plate (118) arranged at the front end of the rotary shaft (115) of the rotary operating handle (110).

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