EP1577465B1 - Lock element with fixation for actuating element - Google Patents

Abstract

Lock element comprises a lock body (2), a locking element (4) that rotates relative to the lock body, and a cavity protruding into the lock body in which an actuating element (8, 8') coupled to the lock element and rotating relative to the lock body is removably fixed to a cylindrical fixing section (9). The fixing section is provided with a peripheral groove engaging with a catch element that is displaceably guided in the lock body radially to the axis of the fixing section and is loaded by a spring in the direction of the groove. Preferred Features: The lock body is a profiled cylinder.

Description

The invention relates to a lock element with a lock body, a lock element which can be rotated relative to the lock body and an actuation element which can be coupled to the lock element and which can be rotated relative to the lock body.

Such lock elements are used, for example, in conventional mortise locks, in which a profile cylinder serves as a lock body and a door handle or door knob as an actuating element. When installing such mortise locks in a door is faced with the task of attaching the actuators in the simplest possible, space-saving and visually appealing manner on the lock body. In general, it is not possible to mount on both sides of the lock body before installing the lock element in the door actuators, as provided in the door opening for the lock element is usually smaller than the actuators, so that only the example with a Actuator coupled lock element with its side facing away from this actuator side must be inserted through the opening before then the other actuator can be mounted on the lock body. At least on one side of the door lock so an actuator after installation of the lock body in the door must be retrofitted. Particularly in the case of electronic locking systems, there is the additional problem that mechanical and electronic components must be accommodated in an actuating element embodied, for example, as a door knob, so that comparatively little space is available for fastening the actuating element to the lock body.

A common solution known from the prior art suggests mounting at least one of the two actuators on a shaft extending through the door lock and by means of a fastener element acting radially on the shaft, e.g. to fix a threaded pin. However, this solution is optically unsatisfactory because the fastener is visible on the outside of the actuator. In addition, a solid shaft is required for a sufficiently stable attachment, which limits the space available for mechanical and electronic components space. In addition, assembly and disassembly of an attachable in this way actuator are relatively expensive.

In the FR-A-1 480 360 a lock element is disclosed, which can be opened from one side of the lock with a key and from the other side of the lock with a rotary handle. The rotary handle is rotatably mounted with a shaft in the associated lock body and axially locked by means of a fixing element. The seated in the lock body fixing protrudes for this purpose in a formed on the shaft circumferential groove.

The GB 853 801 A discloses a door handle which is attachable with a hollow shaft portion on a through the lock nut inserted square bar. The fixation takes place via a locking pin mounted in a square bar, which springs in spring into a hole in the door handle.

Object of the present invention is to provide a lock element of the type mentioned, in which an actuator in a simple and space-saving manner is releasably fastened.

This object is achieved by the features of claim 1. The lock element in this case has a protruding into the lock body cavity, in which the actuating element with a cylindrical attachment portion is releasably fastened. The cylindrical attachment portion of the actuating element has on the outside a circumferential groove which can be latched with a latching element, which is guided radially to the axis of the cylindrical mounting portion slidably in the lock body and acted upon by a spring in the direction of the groove of the actuating element. The actuating element is thus secured by the latching of the groove with the corresponding locking element against axial displacement. Overall, virtually no installation space for the attachment is lost on the part of the actuator, so that, for example, in a door knob of an electronic door lock the entire interior of the doorknob for mechanical and electronic components is available. In addition, no fasteners are visible from the outside in the construction according to the invention, which is very advantageous in terms of the design of the castle.

According to the invention, both the latching element and the lock body each have a bore, wherein the two bores have at least substantially the same diameter and extend parallel to the axis of the cylindrical attachment portion. The two holes are arranged so that the lock body-side bore extending from the end of the lock body to which the actuator is fastened, up to the bore of the lock body mounted in the lock element, and that the two holes are aligned with each other in a compressed spring and overlap partially with a relaxed spring. With compressed spring are the two So drilling axially behind each other. Such an arrangement allows a release of the locking of the locking element with the actuating element by means of a special eccentric tool. Such a tool resembles a screwdriver with a handle and a round metal rod attached thereto. The tip of this metal rod forms a cylindrical extension whose cross-section is smaller than that of the metal rod, and which is arranged at the front end of the metal rod eccentrically on this. In a relaxed spring, the two holes overlap only partially and an eccentric can be introduced with its cylindrical extension through the lock body side bore in the overlap region of the hole provided in the locking element. When the eccentric tool is now rotated, the locking element is pulled away from the groove of the mounting portion and the spring is compressed. The two holes are aligned with each other and the locking of the locking element with the actuating element is released.

Advantageous embodiments of the invention are described in the description, the figures and the subclaims.

The cylindrical attachment portion may have at its protruding into the lock body end a conical taper, which allows a displacement of the locking element against the spring tension during insertion of the actuating element into the cavity of the lock body. If the lock body is already mounted in a door lock, the actuator can thus be easily attached to the lock element. When inserting the actuating element with its conically tapered attachment portion in the cavity of the lock body, the force applied during insertion force through the inclined surface on the tapered mounting portion in a radially extending force, which can compress the spring converted. If the actuating element is inserted far enough into the cavity, its circumferential groove engages with the locking element, wherein this is pressed by the spring in the direction of the groove. The actuator can therefore be attached by simply plugging, without the need for a tool would be necessary, at the same time assembly errors are reliably avoided.

According to an advantageous embodiment of the invention, the latching element may be guided along a running inside the lock body, in particular linear guideway, wherein its movement is limited in two opposite directions extending radially to the axis of the cylindrical mounting portion directions by means of stop elements. Along the guide track running completely outside the fastening element, the latching element is thus accommodated in a space-saving manner relative to the interior of the fastening element and the travel by which the latching element is displaceable radially relative to the axis of the cylindrical fastening section is limited by means of the stop elements. In the one extreme position of the locking element of the mounting portion of the actuating element is latched to the locking element, in the opposite extreme position, the locking element is spaced from the groove of the mounting portion, so that there is no engagement between locking element and groove, whereby the actuator with its cylindrical mounting portion in the lock body axially can be moved.

As stop elements, for example, provided in the locking element slot and provided in the lock body pin, which extends through the slot serve. The larger the longitudinal extent of the slot compared to the diameter of said pin, the more gets bigger, the distance by which the locking element can be moved in the radial direction. Such a construction is easy to implement and also durable and maintenance-free.

According to a preferred embodiment of the invention, the spring, which acts on the latching element in the direction of the groove of the fastening section, may be arranged in a recess of the latching element extending radially to the axis of the cylindrical fastening section. The above-mentioned pin, which serves as a stop element, can form a supporting element for the spring with an area extending into this recess. The recess in which the spring is arranged, may be open on the surface of the lock body, but also a chamber-like closed recess is conceivable.

The diameter of the two holes extending parallel to the axis of the cylindrical attachment portion may be between 2 mm and 5 mm, in particular approximately 3 mm. With a relaxed spring, the two holes overlap preferably about half of their diameter. In this way, an optimal force transmission when attaching an eccentric tool for releasing the locking is achieved at a reasonable engagement depth between locking element and groove.

The actuator is in the manner explained relatively easily detachable from the lock body, nevertheless, the fact that a special tool is necessary to release the locking, a certain protection against improper removal of the actuator. It is particularly advantageous that the actuator can be mounted and dismantled as often as desired, without the lock element is damaged or without signs of wear occur.

The lock element according to the invention can have a shaft rotatably mounted centrally in the cavity of the lock body, which shaft is non-rotatably connected at one end to a second actuation element, whereas the first actuation element has a receptacle for the other end of the shaft. With the help of additional coupling elements, it is possible due to the existing shaft to produce a frictional connection between the two actuators. Since the shaft according to the invention is not used for fixing the first actuating element, it can also be designed as a hollow shaft, whereby additional space for electronic components, cables or the like is available.

The attachment portion may have at its end projecting into the cavity of the lock body end face a first force transmission element, which is engageable with a corresponding thereto second power transmission element into engagement, which in turn is rotatably coupled to the closing element. In this way, a frictional connection between the releasably secured mounting portion and the closing element can be made, so that the closing element rotates upon actuation of the actuating element. As a force transmission elements, for example, a radially extending groove and at least one corresponding projection are possible.

The lock body may for example have the shape of a standard commercial profile cylinder. Such a lock body can, without additional adapters are necessary to be used in conventional door locks with standardized dimensions.

Such a molded lock body consists of an upper portion with a cylindrical cross section and a lower portion with an elongated cross section. The guided in the lower portion of the lock body portion of the locking element must be narrower than the lower portion of the lock body in a direction perpendicular to the longitudinal center plane of the lock member direction. In order to achieve a better power transmission between the latching element and the attachment portion, the latching element may have at its upper end a matching in the circumferential groove of the attachment portion locking portion, which in a direction perpendicular to the longitudinal center plane of the lock member direction a greater ready than the lower portion of the profile cylinder has. The area of the groove, with it is engaged with the locking element, is increased in this way, whereby a better grip is achieved.

Fig. 1

einen Schnitt durch die Längsmittelebene eines erfindungsgemäßen Schlosselements, wobei das Rastelement mit dem Betätigungselement verrastet ist, mit einem in das Schlosselement eingeführten Exzenterwerkzeug;

Fig. 1A

einen vergrößerten, das Rastelement und die Spitze des Exzenterwerkzeugs umfassenden Ausschnitt aus der Fig. 1;

Fig. 1B

den gleichen Ausschnitt wie die Fig. 1A, wobei im Gegensatz zur Fig. 1A das Rastelement nicht mit dem Betätigungselement verrastet und der Befestigungsabschnitt des Betätigungselements nicht vollständig in den schlosskörperseitigen Hohlraum eingeschoben ist;

Fig. 2

einen Längsschnitt durch ein Exzenterwerkzeug zum Lösen der Verrastung des Rastelements mit dem Betätigungselement;

Fig. 2A

einen vergrößerten, die Spitze des Exzenterwerkzeugs umfassenden Ausschnitt aus Fig. 2;

Fig. 3

eine perspektivische Ansicht des erfindungsgemäßen Schlosselements mit zur Montage eines Türknaufs geeigneten Betätigungselementen, und

Fig. 4

eine Ansicht eines erfindungsgemäßen Verriegelungsabschnitt des Rastelements mit senkrecht zur Längsmittelebene des Schlosselements verlaufender Blickrichtung.

In the following the invention will be described in more detail by means of a preferred embodiment and with reference to the accompanying drawings. Showing:

Fig. 1

a section through the longitudinal center plane of a lock element according to the invention, wherein the latching element is latched to the actuating element, with an inserted into the lock element eccentric tool;

Fig. 1A

an enlarged, the locking element and the tip of the eccentric comprehensive cutout of the Fig. 1 ;

Fig. 1B

the same section as the Fig. 1A , whereas contrary to Fig. 1A the locking element is not locked to the actuating element and the fastening portion of the actuating element is not completely inserted into the lock body side cavity;

Fig. 2

a longitudinal section through an eccentric tool for releasing the locking of the locking element with the actuating element;

Fig. 2A

an enlarged, the tip of the eccentric comprehensive cutout Fig. 2 ;

Fig. 3

a perspective view of the lock element according to the invention with suitable for mounting a door knob actuators, and

Fig. 4

a view of a locking portion of the locking element according to the invention with perpendicular to the longitudinal center plane of the lock element extending viewing direction.

The in Fig. 1 Lock body 2 shown has the outer shape of a profile cylinder. Approximately in the middle of the lock body 2 is located in the illustrated embodiment, a rotatable relative to the lock body closing element 4 with a cam 6 at its lower end. In other embodiments, the closing element may also be arranged asymmetrically in the lock body. The illustrated lock element 2 has two actuating elements 8, 8 'suitable for mounting a door knob, respectively, at its two opposite ends. The right actuating element 8 'is rotatably connected to a shaft 18. The shaft 18 is centered in a cylindrical cavity 3 (see Fig. 1B ) are arranged in the middle of the cylindrical upper region of the lock body 2 and rotatably mounted in the lock body 2. In turn, it has a cylindrical, over the entire length of the shaft 18 extending cavity 19 through which, for example, cables can be performed. The left operating element 8 is suitable, for example, for mounting a door knob. On its side facing the lock body 2, it has a cylindrical attachment section 9, which is located inside the cylindrical cavity 3 in the interior of the lock body 2 and, in turn, has a passage space for the shaft 18 in the center. Through this passageway The shaft 18 extends through the entire mounting portion 9 into the actuating element eighth

In Fig. 1 is the mounting portion 9 locked with the lock body 2 and pushed so far into the cavity 3 of the lock body 2, that it abuts the end face of an intermediate ring 7, which in turn is non-positively connected to the closing element 4. The cavity 3 is thus almost completely filled by the attachment portion 9.

In the lower elongate portion of the lock body 2, a bore 20 is formed perpendicular to the longitudinal center plane, which serves for fastening of the lock element in a door by means of a not shown forend screw.

In Fig. 1A the mechanism for locking the actuating element 8 in the cavity 3 of the lock body 2 is shown enlarged. The Fig. 1A and 1B each show the same section of the lock element 2. The in the Fig. 1 shown latched state is in the Fig. 1A shown while in the Fig. 1B the actuator 8 is only partially inserted into the cavity 3 of the lock body 2 and not yet latched to the locking element 10.

In Fig. 1A can recognize the locking element 10, which is guided in a guide track 32 in the interior of the lock body 2, and radially to the axis m of the cylindrical mounting portion 9 can be moved. On its upper side, the locking element 10 has a locking portion 16, which in more detail in Fig. 3 is shown. The locking portion 16 is held by a bolt-like fastening element 34 in the locking element 10.

The attachment portion 9 of the actuating element 8 has on the outside a circumferential groove 24. The locking portion 16 of the locking element 9 is seated in this groove 24, so that although the actuating element 8 is rotated about the axis m, but can not be moved in the axial direction.

A spring 22 is arranged in a recess 30, which is round in cross section, in the interior of the latching element 10, the cross section of the cutout 30 essentially corresponding to the diameter of the spring 22. The recess 30 is open at the bottom; the spring 22 is supported at its lower end on a pin 14 which is inserted perpendicular to the longitudinal center plane of the lock body 2 by the lower, elongated area. The pin 14 is held in a circular bore of the lock body 2, which has the same diameter as the pin 14. At the same time, the pin 14 extends through a slot 15 in the locking element 10, which allows a radial displacement of the locking element 10. By the interaction of slot 15 and pin 14, the radial displacement of the locking element 10 is limited up and down. In Fig. 1A the spring is relaxed and pushes the locking element 10 upwards and thus the locking element 16 in the groove 24. The pin 14 touches in this position, the upper end of the elongated hole 15th

In Fig. 1B is the cylindrical mounting portion 9 of the actuating element 8 is not fully inserted into the cavity 3 of the lock body 2.

The attachment portion 9 has according to Fig. 1B on its protruding into the lock body 2 end face 9 'a conical taper 5. When inserting the actuating element 8 with its mounting portion 9 in the cavity 3 is characterized by the tapered surface on the Front of the mounting portion 9, the locking element 10 is pressed down and the spring 22 thus compressed, as in Fig. 1B shown. When the actuator 8 is inserted into the cavity 3 until it stops, the latching element 10 engages with its locking portion 16 with the groove 24 in engagement. The spring 22 relaxes and the actuator is as in Fig. 1A shown locked with the lock body.

Furthermore, one can in the Fig. 1A and 1B Holes 12 and 28 recognize which serve to release the explained locking. A bore 12 in the lock body 2 and a bore 28 in the locking element 10 each have the same diameter d and both extend parallel to the axis m of the cylindrical mounting portion 9. In compressed spring 22 (FIG. Fig. 1B ) are the bore 12 in the lock body 2 and the bore 28 in the locking element 10 aligned with each other and thus form a continuous cylindrical bore. When the locking element 10 is locked to the actuating element 8, that is, when the spring as in Fig. 1A is relaxed, the two holes 12, 28 are offset from each other and overlap about half their diameter d.

To release the latch, an eccentric tool 40 can be used. In the Fig. 1 . 1A and 1B is an eccentric tool 40 can be seen, which is inserted through the bore 12 and into the bore 28. In the Fig. 2 and 2A the tool is shown alone. Such a tool consists of a handle 37 and a metal rod 36 with a round cross section, wherein the diameter of the rod 36 has to correspond approximately to the diameter d of the holes 12, 28 in the lock body 2 and in the locking element 10. At the front end of the tool is an eccentrically arranged smaller cylinder extension 38 whose diameter is at most the overlap of the two holes 12, 28 in the in Fig. 1A shown state of the lock element may correspond. Through the bore 12 in the lock body through the eccentric tool 40 can be inserted at a relaxed spring 22 with its cylindrical extension 38 into the bore 28 in the locking element 10 ( Fig. 1A ). When the tool is now rotated, the locking element 10 is pulled down by the cylinder extension 40 and the connection between the actuating element 8 and the lock body 2 is thus released, so that the actuating element 8 can be pulled out of the cavity 3 in the lock body 2 ( Fig. 1B ).

In Fig. 3 the lock element 2 according to the invention is shown in perspective. By the downwardly open guide track 32, the locking element 10 with the downwardly open recess 30 in its center can be seen. Above the pin 14 can be seen, which serves as a stop element and at the same time in Fig. 2 invisible spring 22 is supported. The locking portion 16 of the locking element 10 is located in a slot-like recess of the lock body 2 perpendicular to its longitudinal center plane.

In Fig. 4 the locking portion 16 of the locking element 10 is shown enlarged. The locking region 16 is a flat metal part whose surface lies substantially perpendicular to the axis m of the cylindrical fastening section 9. At its lower end, the locking portion 16 has a bore 17 through which a bolt for fixing the locking portion 16 in the locking element 10 can be inserted. The locking portion 16 of the locking element 10 is narrower in a direction perpendicular to the longitudinal center plane of the lock member direction than the lower portion of the lock body 2. Above this range, the locking portion 16 extends laterally in said direction and then has a greater width than that Lower portion of the lock body 2. At its upper end, the locking portion 16 is sickle-shaped, so that it is complementary to the annular groove 24 in the mounting portion 9 and at the same time does not protrude beyond the outer contour of the lock body 2.

In summary, the invention relates to a lock element with a lock body 2, a locking element 4 rotatable relative to the lock body 2 and a cavity 3 projecting into the lock body 2, in which an actuation element 8 which can be coupled to the lock element 4 and is rotatable relative to the lock body 2 is provided with a cylindrical attachment section 9 is releasably attachable. The mounting portion 9 of the actuating element 8 has on the outside a circumferential groove 24 which can be latched with a latching element 10. The latching element 10 is guided along a guide track 32 extending inside the lock body 2 and can be displaced radially between the two extreme positions radially to the axis m of the cylindrical fastening section 9. With a spring 22, the locking element 10 is biased in the direction of the groove 24 of the mounting portion 9.

LIST OF REFERENCE NUMBERS

2

lock body

3

cylindrical cavity

4

closing element

5

conical rejuvenation

6

Cam

7

intermediate ring

8th

actuator

8th'

actuator

9

cylindrical attachment section

9 '

End face of the cylindrical attachment portion

10

locking element

12

drilling

14

pen

15

Long hole

16

locking area

17

Bore in the locking area

18

wave

19

cavity

20

mounting hole

22

feather

24

groove

28

drilling

30

recess

32

guideway

34

fastener

36

metal rod

37

Handle

38

Cylindrical extension

40

Exzenterwerkzeug

d

Diameter of the holes 12 and 28

m

Axis of the cylindrical attachment portion 9

Claims (10)

1. A lock element having a lock body (2), a closing element (4) rotatable with respect to the lock body (2), a hollow space (3) which projects into the lock body (2) and in which an actuation element (8) couplable to the closing element (4) and rotatable with respect to
   the lock body (2) is releasably fastenable to a cylindrical fastening section (9), wherein the fastening section (9) of the actuation element (8) has a peripheral groove (24) at the outer side which is latchable to a latching element (10) which is guided displaceably in the lock body (2) radially to the axis (m) of the cylindrical fastening section (9) and which is loaded by means of a spring (22) in the direction of the groove (24) of the actuation element (8),
   characterised in that
   the latching element (10) and the lock body (2) each have a bore (12, 28), with both bores (12, 28) having at least substantially the same diameter (d) and extending parallel to the axis (m) of the cylindrical fastening section (9);
   in that the bore (12) on the lock body side extends from the end of the lock body (2,) to which the actuation element (8) can be fastened, up to the latching element (10) guided in the lock body (2); and
   in that the two bores (12, 28) are aligned with one another with a compressed spring (22) and overlap regionally with a relaxed spring (22).
2. A lock element in accordance with claim 1, characterised in that the fastening section (9) has a conical converging portion (5) at its end projecting into the lock body, said converging portion enabling a displacement of the latching element (10) against the spring tension on the introduction of the actuation element (8) into the hollow space (3) of the lock body (2).
3. A lock element in accordance with claim 1 or claim 2, characterised
   in that the latching element (10) is guided along a guide track (32) extending within the lock body (2), with its movement being bounded in two opposite directions extending radially to the axis (m) of the cylindrical fastening section (9) by means of abutment elements (14, 15).
4. A lock element in accordance with claim 3, characterised in that the abutment elements (14, 15) are realised by means of an elongate hole (15) provided in the latching element (10) and by means of a pin (14) provided on the lock body side and extending through the elongate hole (15).
5. A lock element in accordance with claim 4, characterised in that the spring (22) is arranged in a cut-out (30) of the latching element (10) extending radially to the axis (m) of the cylindrical fastening section (9), with the pin (14) forming a support element for the spring (22) with its region extending into this cut-out (30).
6. A lock element in accordance with any one of the preceding claims, characterised in that the diameter (d) of the two bores (12, 28) extending parallel to the axis (m) of the cylindrical fastening section (9) in the latching element (10) and in the lock body (2) in each case amounts to between 2 mm and 5 mm, in particular substantially 3 mm, and the two bores (12, 28) overlap by approximately half of their diameters (d) with a relaxed spring (22).
7. A lock element in accordance with any one of the preceding claims, characterised in that it has a shaft (18) which is rotatably guided centrally in the hollow space (3) of the lock body (2) and which is rotationally fixedly connected to a second actuation element (8') at one end, whereas the first actuation element (8) has a mount for the other end of the shaft (18).
8. A lock element in accordance with any one of the preceding claims, characterised in that the fastening section (9) has a force transmission element at the end face at its end projecting into the hollow space (3), said force transmission element being able to be brought into engagement with a second force transmission element which corresponds thereto and which is rotationally fixedly coupled to the closing element (4).
9. A lock element in accordance with any one of the preceding claims, characterised in that the lock body (2) has the form of a profile cylinder.
10. A lock element in accordance with claim 9, wherein the profile cylinder consists of an upper section with a cylindrical cross-section and a lower section with an elongated cross-section, characterised in that the region of the latching element (10) guided in the lower section of the profile cylinder is narrower than the lower section of the profile cylinder in a direction extending perpendicular to the longitudinal centre plane of the lock element (2); and in that the latching element (10) has a latching region (16) above this region which fits into the peripheral groove (24) of the fastening section (9) and which has a larger width than the lower section of the profile cylinder in the named direction.

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