EP3421691B1 - Modular locking cylinder - Google Patents

Description

Field of technology

The invention relates to a cylinder lock with a cylinder housing consisting of several modules connected to one another by means of a connecting element and arranged one behind the other in an axial direction, the connecting element with form-fitting elements in a recess, having a base and two opposing walls, of a flange section of the cylinder housing having two broad sides facing away from one another is tied, wherein the form-fitting elements are each stuck in in particular aligned holes in the walls.

State of the art

A lock cylinder with the properties listed above is used by the DE 100 60 130 A1 disclosed. The lock cylinder has several modules arranged one behind the other in an axial direction that is defined by the axis of rotation of the cylinder cores. The modules are housing sections equipped with tumbler pins and optionally extension pieces arranged in between, with which the lock cylinder can be assembled to a predetermined length by an individual selection of the modules, the individual modules being connected to one another with a connecting element. The flange area of the cylinder housing forms a bottom-side groove in which the connecting element rests, the connecting element being positively tied to the modules with pins. The pins reach through bores open to the walls of the groove, which are aligned with bores in the connecting element.

From the DE 20 2010 007 969 U1 a lock cylinder is known in which a reinforcing insert rests in a broad side surface of the flange section.

The DE 100 41 650 B4 shows a modular lock cylinder, in which the connecting element forms lateral projections which engage in bulges in a wall of a bottom groove.

The EP 3 085 859 A1 discloses a bracing element in order to brace several interconnected modules of a lock cylinder against one another in the axial direction. The EP 1 802 831 B1 describes U-shaped interlocking elements for tying a connecting element to a cylinder housing.

Summary of the invention

The invention is based on the object of improving a cylinder lock of the generic type in terms of production technology.

The object is achieved by the invention specified in claim 1. The subclaims represent advantageous developments of the invention.

First and foremost, a cylinder lock is proposed in which each of the two broad sides has a recess in which a connecting element consisting of at least one component lies. The arrangement of several connecting elements in broad-side recesses has the advantage of increased stability and offers the possibility of using pins as form-locking elements that come from the narrow side of the cylinder housing are inserted into bores, the pins can be formed from U-shaped interlocking elements, as they are basically from the EP 1 802 831 B1 are previously known, while there the U-legs lie in a plane whose surface normal runs parallel to the axial direction, according to the invention, such U-shaped, cramp-like form-locking elements can be used in which the surface normal of the plane in which the U-legs extend, runs perpendicular to the axis of the lock cylinder. The form-locking elements are preferably inserted into the bores from a narrow side of the cylinder housing, the pins in particular crossing the recess and being inserted into bores in the two walls that are aligned with one another. The connecting elements can be arranged between the pins and the bottom of the recess. However, it is also provided that the pins reach through bores in the connecting element, these bores being able to be assigned to a rib pointing towards the bottom of the recess. To simplify production, the bores in the rib can form windows on the side of the connecting element facing away from the wall. The connecting element can be formed from several individual elements. The individual elements can have overlapping and / or interlocking areas. The individual elements preferably have a connecting area in which areas of the individual elements both overlap and intermesh. The individual elements are preferably one behind the other in the axial direction. A single element can form a rib which is directed towards the bottom of the recess. The rib can engage in a free space of another individual element. The free space can be formed by a fork-shaped opening of the individual element. The walls of the recess can have bulges which, in particular, are arranged one behind the other in the axial direction in the manner of a rack or wave. The connecting elements then have congruent projections which engage in the bulges, wherein the individual elements of the connecting elements can be assigned to one another in mutually different axial positions. The Projections or bulges can have a rounded contour line. The projections or bulges preferably have a teardrop-shaped outline. The uniform distances between the bulges or projections allow an individual element of a connecting element to be arranged in different axial positions. For this purpose, the bulges or projections are spaced apart from one another by the same, standardized distance. This distance defines, so to speak, a grid dimension for the axial positions. The edges of the projections and the edges of the bulges run parallel to one another and, in particular, are at a distance from one another, so that the connecting elements can be manufactured with a correspondingly greater tolerance. However, it is preferably provided that a saddle is located between each of the projections. The saddle has a saddle surface that is in contact with a contact flank that lies between bulges. If the axis of rotation of the cylinder core extends in an x-direction and the flange area of the cylinder housing extends in a y-direction, the flank contact of the saddle surface on the contact flank stabilizes the housing made up of several modules in the y-direction. In a further development of the invention it is provided that tensioning elements engaging the pins are provided. The clamping elements can have the task of securing the pins positively in the bores. However, the tensioning elements can also have the task of applying such elastic tension to the pins that a tensioning force is transmitted to the connecting element which generates a tensioning force directed towards one another on two modules. The tensioning elements are preferably assigned to the connecting element. They can be formed by rotating bodies which are inserted into bearing bores that are open towards the broad side. The rotating bodies can have an eccentric section which engages the form-locking elements. The eccentric section can have planes which meet in a corner region or a rounding and which have different radial distances from the axis of rotation of the clamping element, so that a rotation of the clamping element one of the two levels can be brought into contact with the form-fit element. A plane forms a clamping surface. The other level is a release surface. It is preferably provided that at least one connecting element is tied with a form-fitting element on the flange section of the cylinder housing. A clamping element engages the form-locking element in order to clamp the modules against one another in the axial direction. According to the invention, the clamping element is formed by a rotating body. The rotating body can be brought from a release position into a clamping position about an axis of rotation assigned to it. In the clamping position, a clamping surface engages the form-fit element. In the release position, a release surface arranged circumferentially offset from the clamping surface engages the form-fit element. The clamping surface and the release surface each have a surface normal that runs perpendicular to the axis of rotation of the clamping element. In the radial direction, the release surface is spaced less from the axis of rotation of the clamping element than the clamping surface. Clamping surface and release surface are connected to one another via a curve. A pressure flank is preferably assigned to the clamping surface. The pressure flank extends transversely to the clamping surface and has a surface normal which runs essentially in the direction of the axis of rotation of the clamping element. In the clamping position, this pressure flank engages the form-locking element in order to exert a force on the connecting element which is directed in the direction of the bottom of the recess in which the connecting element rests. The recess preferably extends in the area of a broad side, but can also extend in the area of the narrow side. By rotating the clamping element from the release position to the clamping position, the module is initially acted upon by means of the clamping surface engaging the form-fitting element in the axial direction (X-direction) of the axis of rotation of the cylinder cores. The modules arranged next to one another are braced. There is a stiffening of the cylinder lock. Since a pressure flank also acts on the connecting element in a transverse direction (Z direction), further tensioning takes place. In a further training of the In accordance with the invention it is provided that the form-fit elements and in particular the pins formed by them have latching bends with which the form-fit elements are held in the bores with a force fit. The form-fit elements are preferably formed by wire sections bent into a U. In the assembled position, the U-bars are located in depressions in which they can be gripped by means of a tool, for example the blade of a flat screwdriver, in order to be pulled out of the bores. With a central individual element of a connecting element, which has two arms pointing away from one another, two modules of a lock cylinder are preferably connected to one another, between which a locking element is located. By connecting several individual elements, connecting elements of any length can be produced, so to speak, which do not need to be connected to one another, but rather lie in the recesses in a form-fitting manner. The axial force transmission takes place via the bulges or projections of the wall of the recess into which the connecting element or the individual elements engage. In the overlapping areas, however, form-fit connections can be produced between the individual individual elements; this is done in particular by means of the form-fit elements.

Brief description of the drawings

Fig. 1

in einer Seitenansicht ein erstes Ausführungsbeispiel der Erfindung in Form eines Doppelschließzylinders;

Fig. 1a

vergrößert den Ausschnitt Ia in Fig. 1

Fig. 2

den Schnitt gemäß der Linie II - II in Fig. 1;

Fig. 3

den Schnitt gemäß der Linie III - III in Fig. 1;

Fig. 4

vergrößert den Ausschnitt IV in Fig. 2;

Fig. 5

den Schnitt gemäß der Linie V - V in Fig. 2;

Fig. 6

vergrößert den Ausschnitt VI in Fig. 5;

Fig. 7

den Schnitt gemäß der Linie VII - VII in Fig. 1;

Fig. 8

eine erste Explosionsdarstellung des Schließzylinders;

Fig. 9

eine zweite Explosionsdarstellung des Schließzylinders;

Fig. 10

ein zweites Ausführungsbeispiel der Erfindung, bei dem vier Module 1', 1", 1'", 1"" mittels Verbindungselementen 8, 9 miteinander verbunden sind;

Fig. 11

das in der Fig. 10 dargestellte Ausführungsbeispiel in einer Explosionsdarstellung betreffend die Einzelelemente des Verbindungselementes;

Fig. 12

vergrößert ein Einzelelement 8 eines Verbindungselementes,

Fig. 13

das in Fig. 12 dargestellte Einzelelement 8 in einer Rückseitendarstellung;

Fig. 14

perspektivisch ein Spannelement 24;

Fig. 15

das Spannelement in einer Draufsicht;

Fig. 16

ein drittes Ausführungsbeispiel der Erfindung;

Fig. 17

den Schnitt gemäß der Linie XIII - XIII in Fig. 16;

Fig. 18

den Schnitt gemäß der Linie XIV - XIV in Fig. 16;

Fig. 19

den Schnitt gemäß der Linie XV - XV in Fig. 16 und

Fig. 20

eine Explosionsdarstellung des in den Figuren 16 - 19 dargestellten Ausführungsbeispiels.

The invention is explained in more detail below on the basis of exemplary embodiments. Show it:

Fig. 1

in a side view a first embodiment of the invention in the form of a double lock cylinder;

Fig. 1a

enlarges the section Ia in Fig. 1

Fig. 2

the section along the line II - II in Fig. 1 ;

Fig. 3

the section along the line III - III in Fig. 1 ;

Fig. 4

enlarges the section IV in Fig. 2 ;

Fig. 5

the section along the line V - V in Fig. 2 ;

Fig. 6

enlarges the section VI in Fig. 5 ;

Fig. 7

the section along the line VII - VII in Fig. 1 ;

Fig. 8

a first exploded view of the lock cylinder;

Fig. 9

a second exploded view of the lock cylinder;

Fig. 10

a second embodiment of the invention, in which four modules 1 ', 1 ", 1'", 1 "" are connected to one another by means of connecting elements 8, 9;

Fig. 11

that in the Fig. 10 illustrated embodiment in an exploded view relating to the individual elements of the connecting element;

Fig. 12

enlarges an individual element 8 of a connecting element,

Fig. 13

this in Fig. 12 shown individual element 8 in a rear view;

Fig. 14

perspective a clamping element 24;

Fig. 15

the clamping element in a plan view;

Fig. 16

a third embodiment of the invention;

Fig. 17

the section along the line XIII - XIII in Fig. 16 ;

Fig. 18

the section along the line XIV - XIV in Fig. 16 ;

Fig. 19

the section along the line XV - XV in Fig. 16 and

Fig. 20

an exploded view of the in the Figures 16-19 illustrated embodiment.

Description of the embodiments

The one in the Figures 1 - 9 The first exemplary embodiment shown is a double lock cylinder with a cylinder housing 1 which has two modules 1 ', 1 ". Each module 1', 1" has a cylinder core with core pins, the cylinder core 4 being arranged in a cylinder section 3. In a flange section 2, which has two broad sides 2 'pointing away from one another, housing pins and housing pin springs are arranged in a pin bore 16.

The two broad sides 2 'have recesses 5 extending in the axial direction of the cylinder cores 4. These can be milled portions. The recesses 5 have walls 6 extending in the axial direction and a base 7. The bases 7 of the recesses pointing away from one another 5 of the two broad sides 2 'run parallel to one another. The walls 6 of a respective recess 5 face one another.

The walls 6, which extend in the axial direction, are undulating. They form bulges 18 that are evenly spaced from one another. The bulges 18 have the contour of a drop or a wave.

A connecting element is arranged in each of the recesses 5, the connecting element consisting of individual elements 8, 10. A central individual element 8 has a central area 8 ″. The closing element 17 is located in this area. In addition, the individual element 8 has two arms 8 ′ protruding in opposite directions from the central area 8 ″. The arms 8 'each lie in a recess 5 of one of the two modules 1', 1 ", so that the individual element 8 ties the two modules 1 ', 1" to one another, with the closing element 17 between the two modules 1', 1 " The central area 8 ″ has a faceplate screw passage opening.

In the walls 6 holes are provided. A bore 11 is open on both sides. A first opening of the bore 11 extends to the recess 5. The opposite opening of the bore 11 extends to a recess 23 which is arranged in the region of the narrow side of the flange section 2. The bore 12 in the opposite wall 6, which is aligned with the bore 11, is a blind bore. The bore 12 extends to adjoining the cylinder section 3 of the housing, so that the two bores 11, 12 in their entirety extend almost over the entire radial length of the flange section 2. A large number of bores 11, 12, which are evenly spaced in the axial direction, are provided, into each of which a pin 21 can be inserted in order to fix the connecting element or the individual elements 8, 9 in the recess 5 with a positive fit.

The pins 21 are formed by U-shaped interlocking elements 20. These are pieces of wire bent into a U shape. When inserted into the bores 11, 12, a U-web 22 lies in the recess 23.

The individual element 8 has a rib 14 on its side facing the bottom 7. In this rib there are bores 13 which are aligned with the bores 11, 12 and into which the pin 21 is inserted. On the side facing away from the rib 14, the bores 13 are open and each form a window 13 '.

A single element 10 of the connecting element, which is an end piece, has two fork-shaped sections extending in the axial direction, which leave a free space 15 between them. This fork-shaped free space 15 serves to accommodate the rib 14. The individual elements 8, 10 have projections 19 pointing away from one another, which can engage in the bulges 18 in a form-fitting manner. The bores 11, 12 are provided in the bulges 18 here.

Again Figure 1a As can be seen, the edges of the projections 19 run parallel to the edges of the bulges 18 at a slight distance of about 0.1 to 0.15 mm. This is preferably a tolerance-related play. If, however, an axial pull is exerted on the cylinder core in the direction X during a manipulation attempt, the edges of the bulges 18 can rest against the edges of the projections 19 in order to effect a form-fitting retention of the modules on one another. To stabilize the modules in the Y direction, provision is made for saddle surfaces 37 to rest on contact flanks 38 between two bulges 18 in the area of the saddles between the projections 19. The position of the saddle surfaces 37 is subject to a lower tolerance than the course of the projections 19.

The Figures 12 and 13 show teeth 35 protruding from the rib 14 which, when two individual elements 8 are put together, engage in recesses 36 which are formed by the fork prongs, between which the free space 15 extends.

The fork-tine-like sections of the individual element 10 have channel-shaped structures which are aligned with the bores 13 and in which the pins 21 extend.

A tensioning element 24 is rotatably mounted in a bore 25 of the connecting element and in particular of the individual element. The tensioning element 24 forms a rotating body and is tied rotatably in the bore 25 with a flange 27. It has an eccentric section 26 which forms two surfaces that are at an angle to one another. The surfaces are a clamping surface 28 and a release surface 29, which are connected to one another to form a curve 30. By rotating the clamping element 24, either the clamping surface 28 can be brought into contact with the pin 21 or the release surface 29. The clamping surface 28 has a greater radial distance from the axis of rotation of the clamping element 24 than the release surface 29. The contact of the release surface 29 with the pin 21 does not deform the pin. If, on the other hand, the clamping surface 28 rests against the pin 21, the pin is elastically deformed. The turning of the clamping element 24 from the clamping position into the release position takes place by overcoming a dead center. In the clamping position the pin 21 is bent out in its middle area in such a way that its end sections, which are inserted into the bores 11, 12, exert a force on the modules 1 ', 1 "which acts on the modules 1', 1" towards one another .

Like the one in particular Figures 14 and 15 As can be seen, a pressure flank 41 extends transversely to the clamping surface 28. While the surface normal of the clamping surface 28 and the surface normal of the release surface 29 transversely to the direction of rotation of the clamping element 24, the surface normal of the pressure flank 41 runs parallel to the axis of rotation of the clamping element 24. A flank 42 extending parallel to the pressure flank 41 is assigned to the release surface 29. The flank 42 is offset relative to the pressure flank 41 in the axial direction to the axis of rotation of the clamping element 24 such that the flank 42 does not exert any force on the form-locking element 20 in the release position, but the pressure flank 41 exerts a force on the form-locking element 20 in the clamping position.

In the release position, the individual element that is assigned to the tensioning element 24 is loosely in the recess 5, so that the modules 1 ', 1 ", 1'", 1 "" connected to one another slightly in the Z direction and in the X direction can be relocated. In the clamping position of the clamping element 24, the modules 1 ', 1 ", 1'", 1 "" are clamped towards one another in the X direction, so that the housing 1 is stiffened. Since the pressure flank 41 braces the individual element 9 in the clamping position against the base 7 of the recess 5, the housing 1 is additionally stiffened in the Z direction.

The Figures 10 and 11 show as a further embodiment a lock cylinder composed of four modules, the modules 1 ', 1 "being equipped with cylinder cores 4 and the modules 1", 1 "' forming extension pieces. A central individual element 8 of the connecting element is in an overlapping or engaging connection with an individual element 9, which is an extension piece of the connecting element. It forms an engagement or overlap area which has fork-shaped sections, as also has the end piece 10. The extension piece 9 also has a rib 14 as it has the arm 8 'of the central individual element 8. Several individual elements designed as extension pieces can thus be combined one behind the other in the axial direction, an axial force-locking connection being achieved on the one hand by the projections 19 engaging in the bulges 18 becomes. On the other hand, an axial positive coupling is also achieved via the positive locking elements 20, the pins 21 of which engage in the channel-shaped structure of the fork prongs. Here, too, the individual elements 9 have clamping elements 24 which interact with the form-fit elements 20.

The individual elements 9 used as extension pieces and the central individual element 8 can be combined with one another in different axial positions, the distance between the projections 19 and the bulges 18 representing a grid dimension. A projection 19 is provided for each bulge 18. However, a bore 11, 12, 13 is also provided for each bulge 18 or for each projection 19. Not each of the bores 11, 12, 13 has to be equipped with a pin 21. It is sufficient if only one form-fit element 20 interacts with an individual element 8, 9, 10.

The one in the Figures 16 to 20 The third embodiment shown, the connecting element is a one-part or multi-part, curved flat piece with an edge-side arrangement of projections 19, these being assigned to only one of the edges. A central piece 8 of the connecting element can be connected to an extension piece 9 with a connecting projection 32 engaging in a connecting recess 33.

The connecting element 8, 9 has a side wall pointing towards the bottom 7 of the recess 5, which rests flat on the bottom 7. A side wall pointing away therefrom is also essentially flat. The form-fit elements 20 are supported on this side wall. Here, too, the interlocking elements are formed from U-shaped wire sections and form pins 21 running parallel to one another. However, the pins 21 have a latching bend 21 'pointing towards the base 7, which is supported on the side wall of the connecting element 8, 9 pointing away from the base 7 .

The connecting element 8 has a central bulge which surrounds a central piece 31 which is arranged at the axial height of the closing element 17.

Connecting pieces 34 can be arranged between individual modules 1 '", 1" "or 1'" and 1 ".

The connecting protrusion 32 may be a button that engages a C-shaped eye formed by the connecting recess 33.

Here, too, the U-webs 22 of the form-locking elements 20 extend in recesses 23, which extend in the rounded area of the narrow side of the flange section 2 on the bottom. With a blade of a flat screwdriver, the U-webs 22 can be gripped under in order to thereby pull the clamp-like form-locking elements 20 out of their form-locking positions. They can be reinserted into the bores 11, 12, 13 without the use of tools.

List of reference symbols

1 Cylinder housing 20th Form-fit element 1' module 21st pen 1" module 21 ' Locking bend 1'" module 22nd U-bridge 1"" module 23 deepening 2 Flange section 24 Clamping element 2 ' Broadside 25th drilling 3 Cylinder section 26th Eccentric section 4th Cylinder core 27 Crimping 5 Recess 28 Clamping surface 6th wall 29 Release surface 7th ground 30th Rounding 8th Single element / central element 31 Center piece 8th' poor 32 Connecting protrusion 8th" Central area 33 Connection recess 9 Single element / extension piece 34 Connector 35 tooth 10 Single element / end piece 36 Recess 11 drilling 37 Saddle surface 12 drilling 38 Contact edge 13 drilling 39 drilling 13 ' window 40 slot 14th rib 41 Pressure edge 15th free space 42 Flank 16 Pin hole 17th Closing link 18th bulge 19th head Start

Claims (14)

1. Cylinder lock comprising a cylinder housing (1) consisting of a plurality of modules (1', 1", 1"', 1"") which are interconnected by means of a connecting element (8, 9, 10) and arranged one behind the other in an axial direction (x), the connecting element (8, 9, 10) being restrained, by means of positive engagement elements (20), in a recess (5), which has a base (7) and two opposite walls (6), of a flange portion (2) of the cylinder housing (1), which portion has two broad sides (2') that face away from one another, the positive engagement elements (20) each plugging into bores (11, 12) in at least one of the two walls (6), characterised in that the two broad sides (2') each have a recess (5) equipped with a connecting element (8, 9, 10).
2. Cylinder lock according to claim 1, characterised in that a clamping element (24) which acts on the positive engagement element (20) is provided in order to clamp the modules (1', 1", 1"', 1"") onto one another in the axial direction, the clamping element (24) being a rotary body comprising a clamping surface (28), which rests on the positive engagement element (20) in a clamping position, and a release surface (29), which is arranged so as to be circumferentially offset from said clamping surface and rests on the positive engagement element (20) in a release position, the distance from the release surface (29) to the rotational axis of the clamping element (24) being less than the distance of the clamping surface (28) from the rotational axis of the clamping element (24).
3. Cylinder lock according to either claim 1 or claim 2, characterised in that the positive engagement elements (20) form pins (21) which are inserted from a narrow side of the cylinder housing (1) into mutually aligned bores (11) in the two walls (6), two pins (21) being in particular formed by a U-shaped positive engagement element in each case, a U-web (22) which connects the pins (21) to one another in particular being located in a depression (23) in the narrow side of the cylinder housing (1), which side is rounded in cross section.
4. Cylinder lock according to any of the preceding claims, characterised in that the connecting element (8, 9, 10) has a plurality of individual elements (8, 9, 10) which have mutually overlapping and/or interlocking regions and are arranged one behind the other in the axial direction, teeth (35) in particular engaging in recesses (36).
5. Cylinder lock according to any of the preceding claims, characterised in that the walls (6) have bulges (18) into which protrusions (19) of the individual element (8, 9, 10) engage, a plurality of bulges (18) or projections (19) being in particular arranged one behind the other in the axial direction in the manner of a gear rack.
6. Cylinder lock according to claim 5, characterised in that the edges of the bulges (18) are spaced apart from the edges of the protrusions (19).
7. Cylinder lock according to either claim 5 or claim 6, characterised in that saddles (37) which extend between the protrusions (19) rest against contact flanks (38) which extend between the bulges (18).
8. Cylinder lock according to any of the preceding claims, characterised in that a clamping element (24) that acts on a pin (21) is provided, the clamping element (24) in particular applying to the pin (21) a force which acts in the axial direction (x) and/or in that the clamping element (24) is assigned to the individual element (8, 9, 10).
9. Cylinder lock according to claim 8, characterised in that the clamping element (24) is a rotary body comprising an eccentric portion (26) and/or in that a pressure flank (41) exerts a force on the pin (21) transversely to the axial direction (x).
10. Cylinder lock according to any of claims 3 to 9, characterised in that the pins (21) have latching outward bends (21') which are bent outwards in particular in the direction of the base (7).
11. Cylinder lock according to any of the preceding claims, characterised in that the mutually overlapping and/or interlocking portions of the individual elements (8, 9, 10) have a rib (14) which engages in a free space (15), the free space (15) in particular being arranged between two portions of the individual element (9, 10) that are arranged in a fork shape and/or in that the rib (14) is arranged on the side of the individual element (8, 9) that faces the base (7).
12. Cylinder lock according to any of the preceding claims, characterised in that the individual element (8, 9) has bores (13) which are aligned with the bores (11, 12) in the walls (6), the bores (13) being in particular assigned to a rib (14) and windows (13') being formed in the region of the rib (14), which windows are open towards the side of the individual element (8, 9) that faces away from the wall (6).
13. Cylinder lock according to any of claims 3 to 12, characterised in that the pins (21) extend substantially in parallel with pin bores (16) over the entire length of the flange portion (2), the bore (12) in which an end of the pin (21) that is at the front on the insertion side is plugged being a blind bore.
14. Cylinder lock according to any of claims 2 to 13, characterised in that the clamping element (24) has a pressure flank (41) which extends transversely to the clamping surface and, in the clamping position, exerts a force on the connecting element (8, 9, 10), which force is directed towards the base (7).

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