DE202008007068U1 - Device for emergency unlocking of electronically operated locking cylinders - Google Patents

Abstract

Device (100) for emergency unlocking of electronically actuated closing devices (1), in which an axially displaceable rod (18) with an engagement section (20) arranged thereon is arranged via a thread (16) arranged at the other end of the rod (18) and rotatable in the Housing (2) accommodated central gear (4) with an with the thread (16) of the rod (18) cooperating internal thread (14) by rotating the central gear (4) by means of an electric motor (8) in the axial direction is displaceable to the Engages engaging portion (20) mechanically with a in a cylinder core (22) of the locking device (1) rotatably received mechanical locking lug (26), wherein the rotation of the central gear (4) via a sensor (28) is monitored, the Rotation of a diametrically polarized permanent magnet (30) detected, which is rotated via a in the central gear (4) engaging further pinion (32), characterized in that ss the device (100) comprises a hollow ring (102) with at least two mutually polarized magnets (104a, 104b), whose inner diameter (D) ...

Description

The The invention relates to an emergency release device of electronic lockable locking devices according to the generic term of claim 1.

nowadays come indoors in buildings Castles used, the electronically operated lock cylinder which has over an associated one Electronics z. B. by means of an identification card or a radio transmitter actuated is. The lock cylinder as such has a knob-like housing, within which one Closing electronics, a current source and an electric motor are arranged, the latter via the Electronics can be activated and over a pinion drives a central gear. In the turning center of the central Gear is an internally threaded hole arranged with a Externally threaded section cooperates at one end of an axially displaceable rod, the at its other end an engaging portion, for. B. an engagement pin bears, the z. B. in the manner of a pull-wedge in a corresponding groove of the Engaging section, or the displaceable rod surrounding cylinder core applies to the knob-like housing with a cylinder core rotatably mounted locking nose to mechanically couple or release the latter.

Around Here, the number of turns made the central gear - and thus the axial position of the engaging portion - to monitor is at this Type of lock another pinion rotatably arranged in the housing, which is also engaged with the central gear and at which one - in Direction of the rotation axis of the other pinion considered - diametrically polarized permanent magnet is fixed, its rotation by a sensor, in particular a reed contact or the like, is detected, which with the electronics of the castle in connection stands. If the central gear z. B. to open the lock on the Electric motor rotates by a predetermined number of revolutions and the rod accordingly into the cylinder core in the axial direction is moved, the electronics determined by the rotation of the further pinion caused number of associated pulses of the sensor and cuts off the power to the electric motor when the desired number of pulses is reached. This ensures that the engagement section is positioned at the correct axial position in which the lock z. B. is locked or unlocked, or in the engagement pin occupies a position in which only the housing cap is removable to make a battery change or the lock as such can be dismantled.

There in case of loss of the electronics activating code card or a corresponding radio remote control - that is the electronic key - not more is possible is to open the locks described above without being affected by violence In case of such loss, it required the lock too to destroy and to exchange for a new one, with a considerable amount of time Effort and costs associated with it. Also it is not possible the Castles in case of fire by authorized personnel in the shortest possible time To release the time to B. for people included as quickly as possible To create access to the free.

Accordingly, it is an object of the present invention to provide a device with which the previously described locks of authorized persons without mechanical damage emergency unlocking, especially in case of danger to let.

These The object is achieved by the Characteristics of claim 1 solved.

To The invention comprises an emergency release device previously described lock a cylindrical hollow ring, z. B. made of aluminum or another preferably diamagnetic material, the sleeve-shaped configured is and about the outside pushed the knob or housing becomes. In the hollow ring are preferably diametrically opposite arranged at least two magnets of different polarization. By a rotation of the hollow ring with the alternately contained therein polarized permanent magnets around the knob-shaped housing is due to the changing magnetic force effect on the magnet, which is coupled to the other pinion, the latter in rotation offset, whereby in turn due to the meshing the central Gear is rotated. This makes it possible, the aforementioned locks only by turning the hollow ring around the knob-like or bell-shaped housing of the closing device around in one direction to unlock, and by turning in the to lock opposite direction.

preferred Way are a total of four magnets diametrically opposite disposed within the hollow ring, wherein the polarization of a to next Magnet in the direction of rotation changes. Like the applicant has found, results in such an embodiment of the invention a total of four alternately polarized permanent magnets one very high efficiency when opening a lock, whereas with a larger number of permanent magnets, z. B. at 8 magnets, due to the overlap of the magnetic fields of magnet associated with the further pinion through the alternating fields not be further rotated.

The The invention will be described below with reference to the drawings a preferred embodiment described.

In show the drawings:

1 3 is a schematic cross-sectional view of an exemplary electronic locking device with a device according to the invention attached,

2 a schematic axial cross-sectional view of the locking device of 1 at the level of the central gear, and

3 a schematic spatial representation of the preferred embodiment of the device according to the invention with four mutually polarized permanent magnet.

As in 1 and 2 is shown, includes an electronically actuated locking device 1 , a knob-like housing 2 in which a central gear 4 is recorded rotatable. The central gear 4 is about one with an electronic control device 6 coupled electric motor 8th that has a pinion 10 on the gear 4 acts, in one or the other direction rotatable, as indicated by the double arrow 12 in 2 is indicated.

In the center of the gear 4 there is an internally threaded hole 14 through which a correspondingly shaped male threaded portion passes 16 a rod 18 extends through, at the other end an engaging portion 20 , z. B. in the form of an engagement pin is formed. The rod 18 and over this the engaging section 20 can by rotating the central gear 4 with a groove indicated by dashed lines 24 a mechanical locking nose 26 which are brought into a cylinder core 22 the locking device 1 rotatable is added to the latter mechanically with the housing 2 to pair.

Like the presentation of 1 can still be seen, the rotation of the central gear 4 via a sensor 28 monitors the rotation of a diametrically polarized permanent magnet 30 Detects which one in the central gear 4 engaging another pinion 32 is rotated. The central gear 4 , the rod 18 as well as the pinion 10 of the electric motor 8th and the other pinion 32 are in for better understanding again 2 shown.

Like the presentation of 1 and 2 as well as the representation of 3 can be taken in detail, comprises the device according to the invention 100 for emergency unlocking of the locking device a hollow ring 102 with at least two, but preferably four alternately polarized magnets 104a . 104b its inner diameter D - as in 2 clarified - greater than the outer diameter d of the housing 2 the electronically actuated locking device 1 , such that the hollow ring 102 with the magnets received in it 104a . 104b free around the case 2 the electronic locking device 1 is rotatable around.

1

electronic actuated closing device

2

knob-like casing

4

central gear

6

electronic control device

8th

electric motor

10

pinion

12

double arrow

14

Internally threaded bore

16

Externally threaded section

18

Rod

20

engagement pin

22

cylinder core

24

groove

26

Cam

28

sensor

30

permanent magnet

32

additional pinion

100

inventive device

102

hollow ring

104a

permanent magnet with polarization north

104b

permanent magnet with polarization south

D

Inner diameter of the hollow ring

d

outer diameter of the housing

Claims (3)

Contraption ( 100 ) for emergency unlocking of electronically actuated closing devices ( 1 ), in which an axially displaceable rod ( 18 ) with an engaging portion (FIG. 20 ) over one at the other end of the rod ( 18 ) arranged thread ( 16 ) and a rotatable in the housing ( 2 ) received central gear ( 4 ) with one with the thread ( 16 ) of the rod ( 18 ) cooperating internal thread ( 14 ) by rotating the central gear ( 4 ) by means of an electric motor ( 8th ) is displaceable in the axial direction to the engagement portion ( 20 ) mechanically with one in a cylinder core ( 22 ) of the locking device ( 1 ) rotatably received mechanical locking lug ( 26 ), wherein the rotation of the central gear ( 4 ) via a sensor ( 28 ), which monitors the rotation of a diametrically polarized permanent magnet ( 30 ), which via a in the central gear ( 4 ) engaging further pinion ( 32 ) is rotated, characterized in that the device ( 100 ) a hollow ring ( 102 ) with at least two alternately polarized magnets ( 104a . 104b ) whose inner diameter (D) is greater than the outer diameter (d) of the housing ( 2 ) of the electronically actuable locking device ( 1 ), such that the hollow ring ( 102 ) with the magnets ( 104a . 104b ) around the housing ( 2 ) of the electronically actuable locking device ( 1 ) is rotatable around. Device according to claim 1, characterized in that the hollow ring ( 102 ) a total of four permanent magnets ( 104a . 104b ) has alternating polarization. Device according to claim 2, characterized in that the hollow ring ( 102 ) consists of a non-magnetic or diamagnetic material, and that the four permanent magnets ( 104a . 104b ) in particular diametrically opposite holes of the hollow ring ( 102 ) are included.