DE102011106896A1 - Coupling system for single/double-sided key-operated lock cylinder, has pressure element that is arranged between coupling portions is pressed along axial direction of cylinder core - Google Patents

Abstract

The system has rotary hub (5) that is fixed for rotation with respect to outer periphery of cam element (9). A pair of coupling portions (4,6) is rotatably fixed with respect to the hub. The opposite ends of the coupling portions are provided with key top (3) comprising a recess which is engaged with torque wrench. A pressure element arranged between the coupling portions is pressed along the axial direction of the cylinder core (7). An independent claim is included for clutch.

Description

The invention relates to a coupling system for one and / or two-sided with a key-operated lock cylinder,
which is freely rotatable in the cylinder housing when not inserted in the cylinder core or inserted, but not in closing function key.

Such coupling systems are well known in the art.

The invention has for its object to develop a coupling system described above for single and multi-sided lock cylinder, which is adaptable to different key systems and their different cylinder lengths resulting from the key systems limited coupling space. Attention should be paid to both a flexible adjustment of the closing bit position, as well as the two-sided lockability of the lock cylinder in versions double cylinder in all operating conditions.

• – eine in der Ebene der Schließbartposition mittig angeordneten Nabe, die an ihrem Außenumfang mit einem ein- oder mehrteiligen Schließbartelement drehfest an frei wählbaren Positionen verschiedener Gradteilung verbindbar ist, und
• – die im Inneren eine Kontur zur drehfesten Aufnahme von zwei in der Nabe axial ineinander relativ und zueinander verschiebbaren Kupplungsteilen aufweist, wobei
• – die Kupplungsteile an ihren voneinander abgewandten Enden jeweils eine mit der Schlüsselspitze in Eingriff bringbare Ausnehmung aufweisen, um ein mit dem Schlüssel einleitbares Drehmoment auf die Kupplung zu übertragen, sowie
• – ein axial wirkendes Druckelement zwischen den Kupplungsteilen, mit dem die Kupplungsteile axial in Richtung des jeweiligen Zylinderkernes drückbar sind.

This object is achieved according to the invention with a coupling system for one and / or two-sided with a key-operated lock cylinder, which is not freely inserted in the cylinder core or inserted, but not in closing function key, freely rotatable in the cylinder housing, which is characterized by

• - One in the plane of the cam position centrally arranged hub which is rotatably connected at its outer periphery with a one-part or multi-part cam element at freely selectable positions different degrees division, and
• - Which in the interior has a contour for non-rotatably receiving two axially in the hub relative to each other and mutually displaceable coupling parts, wherein
• - Have the coupling parts at their opposite ends in each case one with the key tip engageable recess to transmit a einleitbares with the key torque to the clutch, and
• - An axially acting pressure element between the coupling parts, with which the coupling parts can be pressed axially in the direction of the respective cylinder core.

According to an advantageous development is - one or both sides - in the hub at least one extension part used, the hub facing the end of the contour is adjusted inside the hub,
and whose end facing away from the hub has a contour which can be brought into non-rotatable engagement with the corresponding coupling part,
wherein the pressure element between the extension part and the coupling part is arranged, as well as in addition in multi-part extension structure for clearance compensation between the extension parts.

The pressure element may be a spring.

It is particularly advantageous if the coupling parts on the end facing the key have a circumferential groove for receiving the front region of the key tip.

According to the invention, it is also possible to arrange a torque transmission part, such as a gear, instead of the cam element on the hub.

The solution of the two-sided lockability in all operating states counteracts the functional position when one side put a key and the cylinder core is twisted, but the key tip is not aligned with the Kupplungseingriffsnut. In this operating position, the space for moving the coupling part of the opposite closing side is no longer available and the key of the opposite side can not be fully inserted. This observed in the known coupling solutions functional limitation is not given with the present construction.

The core idea of the invention is therefore a coupling system or unit for one-sided and two-sided with a key to be operated lock cylinder with a center in the plane of the cam position arranged hub; for external recording of a freely configurable in the geometric limits one or more parts, eg. Divided, cam or similar function-filling element, which is radially freely positionable in a grid, and an inner contour for receiving two slidable in the hub coupling parts, which differ geometrically from the design or the same, which opposes their axial limitation regarding the displaceability the direction of the hub in the idle state or in the key engagement always the corresponding side associated lock cylinder core by a central pressure element, preferably a compression spring, and are fixed according to the torque transmission in the radial degree of freedom to each other.

This coupling unit, which is constructed according to the above principle of the central hub can now to adapt to other dimensions of the lock cylinder, between the hub and coupling part extension parts within an extension grid having the same joining and functional contours and which opposes their axial limitation regarding the displacement the direction of the hub in the idle state or in key engagement always have the corresponding side associated lock cylinder core by a coupling element associated with each compression spring.

Compared with coupling systems known from practice, the solution according to the invention is thus characterized in particular by the central hub.

This hub makes it possible to radially freely position the element - cam - (SST adjustment)

The structure with the separate coupling parts, which individually associated with a pressure element, results in a permanent contact with the core that they can individually individually spring upon extension, the extension having a rigid axial connection to the hub. Thus, the reliability is increased since jamming of the coupling parts over the length of the extension can not take place.

The hub is stored in the core or in case of extension, the extension takes over the storage of the hub.

A particular advantage results from the fact that the structure is modular and can be installed in all lock cylinders, which has a center-centered flat key channel.

In the prior art, a fixed cam is usually provided with a torque-transmitting, positive-locking contour and with a fixed assignment to the points of engagement of the key, so that no conversion of the basic SST is possible.

Furthermore, a central compression spring is usually always provided in the region of the cam, which shifts the entire coupling extension, so that the displacement always takes place in the radial plane of the cam.

The coupling extension are finally not - as in the inventive solution - composed of individual elements, but have the explicit length as a full part.

The advantage of arranged in the end face of the coupling parts groove, in particular annular groove, arises from the following problem:
It is about the function "closable on both sides".

This function is not or only partially given in known coupling systems.

The difficulty lies in it. that the installation space for the displacement of the coupling part when the provided on the front side recess (not the annular groove) of the coupling part is not aligned with the key tip, is very small. This is potentially claimed by both sides.

The coupling part deviates when inserting the key, as long as the recess and key are aligned. Then the key snaps into the recess.

As long as this has not happened, the coupling part is pressed and takes up the space required for the displacement.

If, in this situation, a key is pushed in from the other side, under normal circumstances, the pressure piece can not be displaced due to a lack of installation space, the key can not be fully engaged and thus the cylinder core for finding the recess can not be rotated.

Here now enters the groove, d. H. the annular groove in function. Through this recess, in which a part of the key tip is immersed, the coupling part is pressed back a little bit. However, the necessary for the torque transfer coverage is the same as when engaged with a coupling part without recess.

The invention will be explained in more detail with reference to the drawings.

Showing:

1 a longitudinal section through a double lock cylinder with a simple coupling according to the invention,

2 a detail from 1

3 the structure with extension parts for the clutch

In the figures, the key is each with 1 referred to and the lock cylinder with 2 ,

In the lock cylinder 2 are the two cylinder cores 7 rotatably mounted.

Between the two cylinder cores is the cam 9 , which rotates with the hub 5 is connectable.

• – die Nabe am Außenumfang Ausnehmungen und am Innenumfang Nocken aufweist, wobei die Nocken am Innenumfang mit Ausnehmungen in oder an dem jeweiligen Kupplungsteil oder an der Kupplungsverlängerung in Eingriff bringbar sind
• – und die Ausnehmungen am Außenumfang der Nabe, die über den Umfang der Nabe verteilt sind, mit einer Bohrung in dem auf die Nabe über das entsprechende Kupplungsteil aufschiebbaren Schließbart ausrichtbar sind,

wobei die Nabe und der Schließbart durch einen durch diese Bohrung einführbaren und mit einer der Ausnehmungen am Außenumfang der Nabe in Eingriff bringbaren Stift drehfest verbindbar sind.This connection can take place according to an embodiment of the invention in that

• - The hub on the outer circumference recesses and on the inner circumference cams, wherein the cams on the inner circumference with recesses in or on the respective coupling part or on the coupling extension can be brought into engagement
• - And the recesses on the outer circumference of the hub, which are distributed over the circumference of the hub, are aligned with a bore in which can be pushed onto the hub via the corresponding coupling part cam,

wherein the hub and the cam are rotatably connected by an insertable through this bore and engageable with one of the recesses on the outer circumference of the hub engaging pin.

In the simple version of the coupling system according to 1 are inside the hub 5 the two coupling parts 4 and 6 relative to each other, wherein they by a compression spring 8th be pressed in the direction of the cylinder cores.

Through the key tip 3 become the coupling parts 4 and 6 against the pressure of the spring 8th moved to the middle.

Inside the hub elements are provided which connect the coupling parts rotationally fixed to the hub, but allow the axial displacement.

On the front side of the respective coupling part a recess is provided, wherein in the coupling position, the recesses in the two coupling parts 4 and 6 facing each other axially aligned. If the key tip 3 is engaged with the recess, the torque transmission of the key turn on the clutch, then the hub and then the cam is possible.

To uncouple, the key is slightly withdrawn, leaving the key tip 3 comes out of engagement with the recess.

The coupling parts have on the end facing the key a special contour, in the form of an annular groove 14 , which minimizes the required displacement path for evading the coupling part in non-aligned position of the previously described recesses of the coupling parts and the key so that the key can always be fully inserted, regardless of the cylinder core and key position of the opposite side.

The construction after 2 differs by the use of extension parts 11 , In the illustrated embodiment, two extension parts are provided, which have key-side end portions with the associated coupling corresponding contours to produce the rotationally fixed connection.

Preferably, both between the extension parts as well as these and the coupling parts compression springs 12 respectively. 8th provided to minimize a game between the parts. With 13 is called an axial compensation sleeve.

LIST OF REFERENCE NUMBERS

1

key

2

lock cylinder

3

key tip

4

coupling part

5

hub

6

coupling part

7

cylinder core

8th

compression spring

9

Cam

10

clutch extension

11

clutch extension

12

compression spring

13

compensating sleeve

14

ring groove

Claims (7)

Coupling system for one and / or two-sided with a key-operated lock cylinder, which is freely rotatable in not inserted into the cylinder core or inserted, but not in closing function key in the cylinder housing, characterized by - in the plane of the cam position centrally arranged hub ( 5 ), which is rotatably connected at its outer periphery with a one-part or multi-part cam bit element at freely selectable positions of different graduation, and - the inside of a contour for rotationally fixed receiving two in the hub ( 5 ) axially relative to each other and mutually displaceable coupling parts ( 4 . 6 ), wherein - the coupling parts ( 4 . 6 ) at their opposite ends one each with the key tip ( 3 ) have engageable recess to transmit a einleitbares with the key torque to the clutch, and - an axially acting pressure element between the coupling parts, with the coupling parts ( 4 . 6 ) axially in the direction of the respective cylinder core ( 7 ) are depressible. Coupling system according to claim 1, characterized in that - one or both sides - in the hub ( 5 ) At least one extension part is used, the hub facing the end of the contour in the interior of the Hub is adapted, and whose end remote from the hub has a contour which is rotatably engageable with the corresponding coupling part engageable, and that the pressure element between the extension part and coupling part is arranged, as well as in addition to multi-part extension structure for clearance compensation between the extension parts. Coupling system according to one of the preceding claims, characterized in that the coupling parts ( 4 . 6 ) on the end facing the key a circumferential groove ( 14 ) for receiving the front portion of the key tip. Coupling system according to one of the preceding claims, characterized in that the pressure element is a spring ( 8th ; 12 ). Coupling system according to one of the preceding claims, characterized in that instead of the cam element on the hub, a torque transmission part, such as a gear is arranged. Coupling system according to one of the preceding claims, characterized in that - the hub ( 5 ) on the outer circumference recesses and on the inner circumference cams, wherein the cams on the inner periphery with recesses in or on the respective coupling part ( 4 . 6 ) or at the coupling extension ( 10 . 11 ) are engageable - and the recesses on the outer circumference of the hub ( 5 ), which are distributed over the circumference of the hub, with a bore in the slidable on the clutch hub via the corresponding coupling sleeve cam ( 9 ) are alignable, wherein the hub ( 5 ) and the cam ( 9 ) are rotatably connected by an insertable through this bore and engageable with one of the recesses on the outer circumference of the hub in engagement pin. Coupling according to one of the preceding claims, characterized in that the coupling extension is designed in different lengths, so that the total length or axial extent of the coupling by replacing the coupling extension to standard lengths of the double-lock cylinder of 30-30, 30-35; 30-40 etc. is customizable

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