EP2628874A2 - Locking cylinder - Google Patents

Abstract

The lock cylinder has two housing portions (12) which are interconnected with variable spacing by an elongated coupling element (14). The coupling element is retained in receptacles of the housing portions along the longitudinal axis of the lock cylinder. The coupling element is adjustable between locking position in which the coupling element is axially locked in the receptacles, and an adjustment position in which the coupling element is axially slidably received in the receptacles by rotation about the longitudinal axis.

Description

The present invention relates to a lock cylinder with two housing parts, which are connected to each other via an elongated coupling element with a variable distance, wherein the coupling element is held in receptacles of the housing parts, which extend along the longitudinal axis of the lock cylinder.

Such a lock cylinder, as he, for example, in EP 1 802 831 B1 is described, is used as intended in a mortise a door and fixed there by means of a cuff screw to allow by means of an associated key a locking or unlocking the locking mechanism of the mortise.

A generic lock cylinder, for example, as a double cylinder, as in EP 1 802 831 B1 is described, be formed, wherein in both housing parts, a respective key-operated cylinder core is provided. The rotary actuation of a core is usually transmitted via a coupling to a cam, which cooperates with the locking mechanism of the mortise.

However, the invention also relates to a designed as a knob cylinder lock cylinder, in which a key-operated cylinder core is arranged only in a housing part, while in the other housing part a designated as Knaufeinsatz shaft is arranged, which is rotatably connected to an associated knob. In such a knob cylinder, the locking mechanism of the mortise lock both by a key-operated rotation of the cylinder core (on the outside of the door) and by a rotary operation of the knob (on the inside of the door). The basic structure of a knob cylinder is for example in DE 10 2010 022 275 A1 described.

Due to different door thicknesses and varying installation positions of the mortise lock, both the overall length of the lock cylinder and the position of the lock bolt can vary with respect to the longitudinal axis of the lock cylinder in the case of both lock cylinder types. To avoid a costly stockpiling of lock cylinders of different lengths and to simplify the production proposes EP 1 802 831 B1 a modular lock cylinder, in which the two housing parts are connected via an elongated coupling element with a variable distance. The coupling element is positively received in selectable axial position in groove-shaped receptacles of the housing parts and secured by means of securing clips. For a mounting of such a lock cylinder, however, a certain number of items must be handled, which can be difficult for the inexperienced user in the final assembly, which usually takes place only on site.

It is therefore an object of the invention to provide an improved lock cylinder of the type mentioned.

The object is achieved by the features of claim 1 and in particular by the fact that the coupling element by rotation about its longitudinal axis between a locking position in which the coupling element is axially locked in the receptacles, and an adjustment position in which the coupling element axially displaceable in the Recorded is adjustable. The lock cylinder according to the invention is characterized by its ease of assembly and adjustability. In the adjustment position, the distance between the housing parts can be changed within the scope of a length range specified by the manufacturer. Once the desired distance between the two housing parts is set, the coupling element can be locked axially by simply rotating about its longitudinal axis in the receptacles, wherein the lock cylinder is configured, for example, that for this purpose a rotation angle of about 90 ° is required. Handling of retaining rings or the like is just as little required as the use of special tools. As a result, the final assembly and / or adjustment of the lock cylinder simplified considerably.

Where directional indications are given in connection with the invention (e.g., "transverse" or "axial"), these generally refer to the longitudinal axis of the lock cylinder. Said receptacle of the respective housing part generally designates the structure of the housing part or on the housing part (for example as a separate securing pin and / or as a separate sleeve), which defines the required opening for the engagement of the elongate coupling element.

According to a preferred embodiment, engage behind the coupling element and the respective receptacle in the locking position of the coupling element, but not in the adjustment position of the coupling element, each other in a positive manner. As a result, a stable connection of the two housing parts is ensured in the locked position.

Preferably, the coupling element and the respective receptacle engage behind each other in the locking position of the coupling element according to a predetermined Verstellraster. The measure of Verstellrasters can be, for example, 5 mm. This is a simple length adjustment for customization guaranteed to different Einsteckschlosstypen and door thicknesses, which are usually also made according to the Verstellraster.

According to a further advantageous embodiment, the coupling element has a plurality of transverse, axially spaced securing recesses, wherein each of the receptacles has at least one securing projection, wherein the securing projection is in the locking position of the coupling element with one of the securing recesses engaged. In particular, the said securing projection can be oriented transversely. As a result, the variable adjustability of the lock cylinder can be realized in a particularly simple manner. Due to the distance of the securing recesses the Verstellraster can be specified for the length adjustment. According to a particularly simple embodiment, only a single securing projection is provided in the respective receptacle. In order to increase the strength of the connection between the coupling element and the housing parts, however, a plurality of securing projections may be provided in the respective receptacle. The securing projections can be arranged opposite one another in the transverse direction and / or arranged axially spaced from one another along the longitudinal axis of the closing cylinder.

According to an advantageous development, said securing projection is integrally formed on the relevant housing part. However, the securing projection is preferably formed by a partial section of a securing element extending transversely through the respective receptacle. The securing element can be designed, for example, as a securing pin or as a securing plate. Such a configuration of the securing projection can be realized in a simple manner in terms of manufacturing technology.

Preferably, the securing element is detachably or fixedly arranged in a securing element recess provided in the respective housing part. The securing element may be caulked into the securing element recess, that is to be held by clamping in the securing element recess. In a fuse element designed as a locking pin, however, it is also possible to provide the locking pin and designed as a locking pin hole securing element recess with a respective thread, so that the locking pin can be screwed into the securing hole.

According to a preferred embodiment, the securing element recess runs parallel to housing pin bores provided in the respective housing part. This simplifies the manufacturing process even further. Machines for the production of lock cylinders usually have devices for the introduction of housing pin holes for pin tumblers, which can also be used for the production of Sicherungselementaussparung. Therefore, no special modifications must be made to the machines. In particular, the housing part during processing only offset laterally, but not rotated. In principle, however, the securing element recess can also be arranged at a different angle with respect to the housing pin bores, for example offset by 90 °.

According to a further advantageous development, the respective section of the coupling element held in the receptacles has the basic shape of a cylinder with a flattening extending in the axial direction, the plurality of securing recesses being offset angularly (ie in the circumferential direction) with respect to the flattening and merging into the flattening. The transition between the flattening and the Locking recesses allows the rotation of the coupling element in the recordings.

Preferably, the receptacles essentially have a circular, corresponding to the maximum cross-section of the coupling element cross-section, wherein a conditional by the securing projection cross-sectional reduction of the recording corresponds to a conditional by the flattening of the coupling element necking. In the adjustment position of the coupling element, the flattening of the coupling element is aligned with the securing projection of the respective receptacle, so that the coupling element can be guided past the securing projection, without the securing projection can engage in one of the securing recesses. The amount of the reduction in area caused by the flattening and the dimensions of the securing projection are preferably selected such that the greatest possible strength of the connection between the coupling element and the housing part is ensured.

In the embodiment described above, the coupling element has a plurality of transverse securing recesses, wherein each of the receptacles has at least one securing projection. Alternatively, it is also possible in principle to provide the arrangement of the securing recesses and securing projections in the reverse manner. In this alternative embodiment, each of the receptacles on a plurality of transverse, axially spaced securing recesses, wherein the coupling element has at least one securing projection (in particular only a single securing projection), and wherein the securing projection in the locking position of the coupling element with one of the securing recesses of the respective receptacle in engagement stands.

In this alternative embodiment, the developments described above may be provided in a corresponding manner. For example, said locking projection of the coupling element can be transversely aligned. The securing recesses of the respective receptacle may be formed by the gaps between a plurality of axially spaced transverse securing means (e.g., securing pins) extending through the respective receptacle. The respective section of the coupling element held in the receptacles may also have a flattening extending in the axial direction in this embodiment, wherein the at least one securing projection of the coupling element is offset angularly with respect to the flattening. In particular, the securing projection with respect to a further flattening of the coupling element form a hook-like lateral Abkragung.

Preferably, the receptacles for the coupling element are provided in a flange portion of the respective housing part, in which usually also the housing pins of pin tumblers are arranged. In this case, the receptacles are preferably circumferentially closed.

Preferably, at least one of the receptacles is formed by a sleeve, which is received in a bore of the respective flange portion. Such a design has proven to be particularly advantageous in terms of production since the flange section can initially be provided with housing pin bores which extend continuously between the cylinder core bore and the underside of the flange section and serve to receive housing pins and associated housing springs. The sleeve is then inserted after carried out insertion of the housing pin holes with housing pins and housing springs in the axial bore of the flange and serves with its outer circumference as a support for the housing springs. Thus, a fundamental modification of existing manufacturing machines and processes is not required. The sleeve may additionally be penetrated by the already mentioned securing element (eg securing pin), which thus likewise forms a section of the respective receptacle.

The coupling element may comprise a central portion and two adjoining arms which engage in the receptacles of the housing parts. The central portion may serve as a stop for the housing parts or associated extension parts to set the maximum penetration depth of the arms in the respective recording.

According to a further preferred embodiment, the coupling element in one or said central portion has a threaded bore which is aligned such that in the locking position of the coupling element, a lock cylinder associated with the forend screw is screwed into the threaded bore. After installation of the lock cylinder in a mortise the screwed-in forend screw is not only an axial fixation of the lock cylinder in the mortise, but also secures the coupling element in its locked position, since rotation in the adjustment position is prevented by the forend screw. A for the installation and / or adjustment of the lock cylinder temporarily screwed into the threaded hole forend screw can also serve as additional lever during rotation of the coupling element between the adjustment position and the locking position.

In order to ensure sufficient strength, the coupling element in the region of the threaded bore, ie in said central portion, have a cross-sectional widening. The coupling element may be integrally formed, including the central portion.

Further advantageous embodiments of the invention are specified in the subclaims, the description and the drawings.

Fig. 1

eine perspektivische Ansicht eines erfindungsgemäßen Schließzylinders;

Fig. 2

eine perspektivische Ansicht des Schließzylinders von Fig. 1 in Explosionsdarstellung;

Fig. 3

einen Querschnitt des Schließzylinders von Fig. 1;

Fig. 4

einen Längsschnitt des Schließzylinders von Fig. 1; und

Fig. 5

eine perspektivische Ansicht eines Koppelelements des Schließzylinders von Fig. 1.

The invention will now be described by way of example with reference to the drawings. Show it:

Fig. 1

a perspective view of a lock cylinder according to the invention;

Fig. 2

a perspective view of the lock cylinder of Fig. 1 in exploded view;

Fig. 3

a cross section of the lock cylinder of Fig. 1 ;

Fig. 4

a longitudinal section of the lock cylinder of Fig. 1 ; and

Fig. 5

a perspective view of a coupling element of the lock cylinder of Fig. 1 ,

An inventive lock cylinder 10, which is formed in the present embodiment as a knob cylinder comprises according to Fig. 1 to 4 two identical housing parts 12, which are connected to each other via an elongated coupling element 14 with a variable distance.

The housing parts 12 each have a Zylinderkern- or axial bore 24, in which a housing part 12, a cylinder core 16 and in the other housing part 12, a shaft 18 is received. A locking pin 20 for actuating a locking mechanism of a mortise lock (not shown) is mounted on the shaft 18 in a variable axial position.

At the free end of the shaft 18, a knob 22 for a rotary operation of the shaft 18 is fixed. The length of a shaft receptacle 23 provided in the interior of the knob 22 is selected such that differences in length of the section of the shaft 18 projecting into the shaft receptacle 23 can be compensated for by different distances between the housing parts 12.

Both the cylinder core 16 and the shaft 18 each have at one end an annular groove 44 and 46, which (not shown) for receiving retaining rings, with the help of the cylinder core 16 and the shaft 18 in cooperation with on the housing parts 12 trained in the axial bores 24 slots 48 can be set in its axial position. In particular, the shaft 18 is thereby axially fixed to the door outer side housing part 12.

The securing of the knob 22 and / or the Schließbarts 20 on the shaft 18 can be done in a conventional manner by suitable means, such as grub screws or the like.

The cylinder core 16 may be coupled to the shaft 18 in a manner not in itself known here. Such a coupling is for example in DE 10 2010 022 275 A1 described.

Each housing part 12 also has a flange portion 26 in which a trained in the embodiment as a blind hole, parallel to the axial bore 24 extending bore 28 is introduced. In each bore 28, a respective sleeve 30 is received, which forms a receptacle 32 for a respective insertion section 33 of the coupling element 14.

As in particular in Fig. 3 As can be clearly seen, each flange portion 26 has a securing element recess in the form of a securing pin bore 35 which extends transversely to the bore 28 and extends tangentially through a corresponding bore of the sleeve 30 and thus through the receptacle 32. A securing element in the form of a securing pin 34 is pressed into the securing pin bore 35, wherein a section of the securing pin 34 projecting into the sleeve 30 forms a securing projection and thus defines a reduction in cross-section of the receptacle 32. Each housing part 12 furthermore has a plurality of housing pin bores 36 which are introduced on the underside of the flange section 26 and run parallel to the securing pin bore 35.

The coupling element 14 has the basic shape of a cylinder, wherein a central portion 38 of the coupling element 14 forms a cross-sectional widening and has a threaded bore 40. At the middle section 38, the two mentioned insertion sections 33 of the coupling element 14 thus close as arms.

At the insertion portions 33 of the coupling element 14 are on both sides of the central portion 38 a plurality of transverse, axially spaced with a pitch of example 5 mm Sicherungsausnehmungen 42 are provided, one of which depending on the selected distance of the housing parts 12 with the securing projection, so through the sleeve 30 extending portion of the respective locking pin 34 ( Fig. 3 ) is engaged.

As in particular in Fig. 3 can be clearly seen, each of the insertion portions 33 of the coupling element 14 has a flattening 50 extending in the axial direction, which is offset from the securing recesses 42 by an angle of approximately 90 °. The securing recesses 42 merge into the flattening 50 such that a rotational movement of the coupling element 14 is not hindered by the securing pin 34. As in particular in Fig. 5 can be seen, the flats 50 with respect to the identical design of the housing parts 12 (asymmetrical arrangement of the locking pins 34) offset by 180 ° to each other.

To the coupling element 14 of its locking position, as in Fig. 1 to 4 is shown to convert into its adjustment position, the coupling element 14 - based on Fig. 3 - be rotated 90 ° counterclockwise, as indicated by the arrow in Fig. 3 is indicated. In the adjustment position, the respective flattening 50 is thus aligned with the associated securing pin 34, so that the coupling element 14 can be displaced in the receptacles 32 in the axial direction. Once the desired distance between the housing parts 12 and / or the desired relative position of the threaded bore 40 is set with respect to the housing parts 12, the coupling element 14 can be rotated back into the locked position.

The threaded bore 40 in the middle section 38 extends radially to the longitudinal axis of the coupling element 14 and serves to receive a forend screw for securing the lock cylinder 10 in a mortise lock (not shown). Since the threaded bore 40 is aligned correctly only for the purpose of receiving the forend screw in the locking position of the lock cylinder 10 (see FIG Fig. 1 ), it is ensured that the Coupling element 14 must always be completely transferred to the locked position before mounting in the mortise lock can take place, and is fixed after installation in the locked position.

According to a modification of the above-described lock cylinder 10 may be formed as a double cylinder. Instead of the shaft 18 and the knob 22, a second cylinder core 16 (not shown) is provided, between the two cylinder cores 16 a suitable means for length compensation and respective couplings for coupling the cylinder cores 16 are provided with the cam 20.

In both cases (knob cylinder or double cylinder) can be provided between the respective housing part 12 and the central portion 38 of the coupling element 14, a connecting part (not shown), if the relevant insertion section 33 of the coupling element 14 does not fully engage in the associated receptacle 32. Such a connecting part thus serves as a filling piece, and it may have a cross section which corresponds to the cross section of the adjacent housing part 12 (FIG. Fig. 3 ) corresponds.

LIST OF REFERENCE NUMBERS

10

lock cylinder

12

housing part

14

coupling element

16

cylinder core

18

wave

20

Cam

22

knob

23

shaft mount

24

axial bore

26

flange

28

drilling

30

shell

32

admission

33

insertion

34

safety pin

35

Safety pin hole

36

Housing pin bore

38

midsection

40

threaded hole

42

securing recess

44, 46

ring groove

48

slot

50

flattening

Claims (12)

Lock cylinder with two housing parts (12) which are connected to each other via an elongated coupling element (14) with a variable distance, wherein the coupling element (14) in receptacles (32) of the housing parts (12) is held, along the longitudinal axis of the lock cylinder (10 ),
characterized,
in that the coupling element (14) is rotated axially about its longitudinal axis between a locking position in which the coupling element (14) is axially locked in the receptacles (32) and an adjustment position in which the coupling element (14) is axially displaceable in the receptacles (32 ), is adjustable. Lock cylinder according to claim 1,
characterized,
that the coupling element (14) and the respective receptacle (32) in the locking position of the coupling element (14), but not in the adjustment position of the coupling element (14) engage behind each other in a form-fitting manner. Lock cylinder according to claim 1 or 2,
characterized,
that the coupling element (14) and the respective receptacle (32) in the locking position of the coupling element (14) engage behind each other according to a predetermined adjustment grid. Locking cylinder according to one of the preceding claims,
characterized,
that the coupling element (14) has a plurality of transverse, axially spaced securing recesses (42), and
in that each of the receptacles (32) has at least one securing projection, wherein the securing projection engages in one of the securing recesses (42) in the locking position of the coupling element (14). Lock cylinder according to claim 4,
characterized,
in that the securing projection is formed by a partial section of a securing element (34) extending transversely through the respective receptacle (32). Lock cylinder according to claim 5,
characterized,
in that the securing element (34) is detachably or fixedly arranged in a securing element recess (35) provided in the respective housing part (12). Lock cylinder according to claim 6,
characterized,
in that the securing element recess (35) runs parallel to housing pin bores (36) provided in the respective housing part (12). Locking cylinder according to one of claims 4 to 7,
characterized,
in that the respective section of the coupling element (14) held in the receptacles (32) has the basic shape of a cylinder with a flattening (50) extending in the axial direction, wherein the plurality of securing recesses (32) are offset angularly with respect to the flattening (50) and go over to the flattening (50). Lock cylinder according to claim 8,
characterized,
in that the receptacles (32) essentially have a circular cross section corresponding to the maximum cross section of the coupling element (14), wherein a cross section reduction of the receptacle (32) due to the securing projection corresponds to a reduction in cross section caused by the flattening (50) of the coupling element (14) , Locking cylinder according to one of the preceding claims,
characterized,
that the receptacles (32) for the coupling element (14) in a flange (26) of the respective housing part (12) are provided. Lock cylinder according to claim 10,
characterized,
in that at least one of the receptacles (32) is formed by a sleeve (30) which is accommodated in a bore (28) of the respective flange section (26). Locking cylinder according to one of the preceding claims,
characterized,
that the coupling element (14) has a threaded bore (40) in a central portion (38) which is oriented such that in the locking position of the coupling element (14) the lock cylinder (10) associated with the fixing screw can be screwed into the threaded bore (40).

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