DE10329969A1 - Battery supported lock for doors of flats, rooms, houses, cabinets etc. containing access control circuit, normally in sleeping mode, not consuming any current, activated by energizer - Google Patents

Abstract

Lock comprises handle(s) (3), rotatably and axially slidably mounted, for actuating locking member, between which and handle is fitted coupling (19) controlled by electronic access control circuit (31,32). The access control circuit is coupled to energizer (47) for temporarily transforming it from current saving sleeping mode to active mode. The energizer is connected to handle for its activatation by axial operation of handle. Preferably energizer is a switch (37) closed by axial motion of handle. Independent claims are included for reliable and battery saving operation.

Description

The The invention relates to a lock, for example, for apartment doors, room doors, front doors, showcases and the like, and a method for safe and battery-saving Operation of a battery-powered Castle.

Battery-backed door locks are for example from the DE 297 03 559 U1 known. The lock is designed in the manner of a lock cylinder, wherein in an externally provided handle an access control electronics is housed. This controls a coupling device, via which the handle is rotatably connected to a closing member. To operate a motor is provided, which is powered by a battery. The access control electronics include a code evaluation device, which can be kept in a stand-by mode normally for energy saving reasons. A wake-up circuit, which is driven by an inductive or capacitive sensor, for example, can activate the code evaluation device. The sensors of the wake-up circuit are also housed in the handle (handle).

The Queries the sensors needed a minimum energy that must be constantly applied by the battery.

From the DE 197 55 218 A1 There is known an electronic cylinder lock which operates battery-backed and has a code evaluation circuit for checking the code given by the key. To accommodate the key, the cylinder lock has a slot and a subsequent channel to this, at the end of a breaker switch is arranged. This includes the insertion of the key, the circuit between a battery and the microchip, ie the code evaluation circuit.

The activity the switch with the key requires that these over a slot is inserted into the lock. This offers over conventional mechanical cylinder locks no significant operating advantage.

From the DE 198 51 308 A1 Moreover, it is also known to operate electronic cylinder locks via a transponder, the transponder can operate passive or active. It is both possible to let the transponder work constantly or to activate only at the push of a button. Both presupposes, however, that the electronic lock is always ready to receive, which in turn leads to a not to be underestimated battery load.

From that Based on the object of the invention to provide a lock, which works very energy efficient.

This object is achieved with the lock according to claim 1 and furthermore by a method according to claim 16:
The lock according to the invention has a handle, which can be connected via a coupling device with the closing member. For this purpose, an electronic access control circuit actuates the coupling device when it determines the access authorization of a user. The clutch is closed. By turning the handle, the user can then open the lock and get the desired access. The access control circuit is not permanently active. It is usually in a sleep mode, which can also be considered a standby state. In the preferred case, it is completely de-energized, ie switched off. The shutdown can be done by electrical contact elements, such as micro-relays or the like or by suitable electronic components, provided that they have a negligible quiescent current. The handle is used to activate the access control circuit, ie to actuate the wake-up device, wherein preferably an axial movement of the handle for switching on the operating current of the access control circuit and thus for waking it is used. This has the significant advantage of intuitive operation for itself. This is especially true when, for example, a sheet-like object, such as a card or a flat disk-shaped body, is used as the key, which is applied to the opening of the lock on the front side of the handle. This results in a practical tactile actuation of the handle, ie it is moved axially by a few millimeters against a weak spring. If the thus activated access control circuit determines access authorization, it closes the coupling device. The operator can now turn the handle and thus open the lap. The key (card, disc, transponder or the like) he no longer has to keep to the knob.

preferably, tilts the access control circuit after a given time window from alone back into their passive state, i. she turns on her own Power supply off. Before that opens However, they do the clutch, at least when it was closed. In In this state, a rotation of the handle can not actuate the closing member cause the lock is thus closed.

One To press Although the handle causes an activation of the access control circuit for a given Time window, but not closing the clutch, resulting in opening the Castle would be synonymous. By activating the access control circuit only for a given time window will be extremely battery-friendly Operation achieved. Even relatively small batteries that are completely effortlessly in the handle or in one on the opposite side of the castle arranged handle can accommodate for a period in the castle remain basically determined only by their self-discharge is. Batteries with low self-discharge can serve for over ten years do.

The Coupling device is preferably actuated by an electric motor which only for implementation the setting process requires electricity, but not to hold the once set position. This too contributes energy-saving operation at. Alternatively, however, any other bistable electrical actuator be used only to a brief surge in the each other position is transferred. By the property of the access control circuit, the clutch In any case, before the expiry of the given time window, the Use of said bistable clutch actuators allows.

Preferably The handle includes at least one antenna that is wireless information transfer between the key and the access control circuit is used. The antenna can with the Key over one for radio waves permeable viewing window communicate. It is possible, a bidirectional traffic or a monodirectional To handle data traffic. It is also possible to get the key over the To supply the antenna with energy. For this purpose, several antennas may be provided be, for example, one for powering the key and another to read the information provided by the key serves. Preferably, the antenna is on the front side of the handle arranged to which, for example, the card-shaped key for activating and opening the Castle is created. This results in a particularly simple and safe operation, whereby the length of the radio link is minimal is. It is at best only a few millimeters, resulting in very low electromagnetic field strengths and with correspondingly very low energy consumption (battery consumption) can be worked.

Preferably is the lock with two opposing coaxial with one another provided common axis arranged handles, one of which on the inside of one door and the other on the outside Side of the door is arranged. The outside lying handle is connected to the closing member via the coupling device, while the inside handle be firmly connected to the closing member can. It is preferred that parts of the entire electronic device belonging to the castle To arrange circuit in the inner handle, while at least the antennas arranged in the outer handle are. This minimizes the risk of unauthorized manipulation. The both parts of the electronic circuit are connected to each other via lines, these are preferably dimensioned so that they are at extreme from the outside, evaporate during an attempted break-in, applied overvoltages and overcurrents, without one for electrical breakdown of the clutch control electronics premier Let energy through. They are designed as a backup. additionally or alternatively separate security elements, preferably in the inside Handle can be arranged.

It can embodiments be provided, in which the lock in a permanent open position is displaceable. This can be achieved, for example, by prolonged pressing, i. Actuate the outside Handle, be initiated.

Further Details of advantageous embodiments The invention are the subject of the drawing, the description or of dependent claims. In the drawing, an embodiment of the Invention illustrated. Show it:

1 a lock according to the invention in a schematic, partially longitudinally cut representation,

2 a block diagram of the castle after 1 .

3 Timing diagrams to explain the operation of the castle,

4 an inventive one-sided lock, in longitudinal horizontal sectional view and

5 the castle after 4 in longitudinal-vertical sectional view.

In 1 is a castle 1 illustrated, which is designed as a two-sided cylinder lock. One of the castle 1 door to be opened and closed 2 is in 1 indicated in extremely schematized representation by dash-dotted lines. On the outside of the door is a handle 3 arranged, for example, has the form of a cylindrical or otherwise shaped knob. she forms a housing 4 whose interior 5 frontally with a ceramic or other, permeable to radio waves substance plate 6 is closed. The plate 6 can for example consist of a plastic. It preferably takes the entire cross-sectional area of the interior 5 and is for example in the housing 4 glued or screwed.

From the case 4 extends a wave 7 into a hole 8th a cylinder housing 9 into it, which has the usual shape of a lock cylinder. The wave 7 is in the hole 8th rotatably mounted and axially displaceable. It points from one in the cylinder housing 9 lying stage 11 an extension 12 on, extending longitudinally through the cylinder housing 9 penetrating bore 8th extends.

On the extension 12 sits a sleeve 13 , which at the door inside end of the cylinder housing 9 protrudes and there with a radial flange 14 is provided. On this is a pot-shaped housing 15 screwed on, that is an inner handle 16 forms. The sleeve 13 is rotatable in the bore 8th stored and also sits freely rotatable on the extension 12 , At one in the cylinder housing 9 provided recess 17 is the sleeve 13 provided with a nose, which is a closing member 18 forms. The closing element 18 is rotatable with the sleeve 13 connected.

For optional rotationally fixed connection of the sleeve 13 with the wave 7 is a coupling device 19 provided by an electric motor 21 is to be operated. The motor 21 sits in a longitudinal bore 22 that in the extension 12 is trained. Its output shaft is equipped with an eccentrically mounted pin 23 connected, in a recess of a radially displaceably mounted locking pin 24 sitting. This is an axially extending, in the sleeve 13 trained slot 25 assigned, in which he can be moved in and out.

Between the stage 11 and the front end surface of the sleeve 13 sits a compression spring 26 that the wave 7 and with this the handle 3 biased to an outer position. The axial stroke of the shaft 7 is by a suitable limiting means 27 such as one radially from the shaft 7 away standing nose 28 bounded in an annular recess 29 engages in the wall of the hole 8th is trained.

In the case 4 as well as the housing 15 is an access control circuit 31 respectively. 32 arranged, the control of the engine 21 serves. The parts of the access control circuit 31 . 32 are interconnected by wires 33 connected in an outer groove 34 the wave 7 lie. Besides, the engine is 21 over lead wires 35 with the access control circuit 31 . 32 connected. This is powered by a battery 36 energized. The battery 36 is a switch 37 assigned. This is by a resilient contact tongue 38 formed at a small distance in front of the front end of the housing 15 stands. This distance is less than the maximum stroke of the handle 3 ,

The access control circuit 31 . 32 has at least one antenna 39 on the inside of the plate 6 or is arranged at a small distance to this. For example, the antenna may be a coil antenna that inductively couples with a key. It is also possible to provide another antenna suitable for transmitting radio waves. It is also possible to provide a combination of two different antennas, of which, for example, a coil antenna for powering a transponder or key 41 and the other is arranged to receive the data transmitted by the latter.

The key 41 for example, as a flat card 42 be formed, the one encoder means 43 contains.

The structure of the access control circuit 31 . 32 goes out too 2 out. To the access control circuit 31 . 32 includes a transmitting and receiving circuit 44 to which the antenna 39 connected. The transmitting and receiving circuit is connected to a code evaluation circuit 45 connected, which checks the received code for validity and, if this is valid, the engine 21 drives to the coupling device 19 in the closed position, ie coupling position to transfer.

The code evaluation circuit 45 and the connected to this transmitting and receiving circuit 44 gets from the battery 36 via a timer circuit 46 powered by the switch 37 triggered and thus triggered. The desk 37 and the timer circuit 46 together form a wake-up device 47 , with which the code evaluation circuit 45 and the transmitting and receiving circuit 44 can be turned on for a short time. The timer circuit 46 is over a first line 48 with the Codeaus value circuit 45 connected via the code evaluation circuit 45 is supplied with voltage. About a second line 49 gives the timer circuit 46 an opening pulse to the code evaluation circuit 45 , whereby this causes the clutch 19 open, if it was closed. The timer circuit 46 is set up in such a way that it first emits an opening pulse in quick succession (line 49 ) and then the operating voltage on line 48 off.

The timer circuit 46 and the code evaluation circuit 45 may be program parts of a microcontroller or components realized by circuitry.

The castle described so far 1 works as follows: In normal long-term holds the compression spring 26 the handle 3 in an external rest position. In this are in 1 both the handle 3 as well as the wave 7 and its extension 12 as well as the access control circuit supported by it 32 held in the left most shifted position. The desk 37 is thus open. In this state, the lock can 1 by operation of the handle 16 ie, from the inside of the door, be opened and closed by the handle 16 is rotated forwards or backwards.

Shall the door 2 be opened or closed from the outside, ie the lock 1 operated from the outside, this does not succeed by merely the handle 3 is turned. The coupling device 19 is in rest position in the 1 illustrated position, ie the locking pin 24 does not protrude into the slot 25 , The rotations of the handle 3 So do not be on the sleeve 13 and therefore not on the closing element 18 transfer.

To open the door 2 from the outside must be the key 41 to the front side of the handle 3 be created. This is the card 42 on the plate 6 placed and pressed. By the thus more or less involuntarily exerted pressure becomes the handle 3 inside, ie in 1 shifted to the right and against the force of the compression spring 26 , This preserves the contact tongue 38 Contact with the housing 15 ie the switch 37 will be closed. The length of the so plays on the timer circuit 46 ( 2 ) given electrical impulse initially a minor role. Happens the contact according to 3 At a time t1, the code evaluation circuit is obtained 46 and the transmitting and receiving circuit 44 that together with the timer circuit 46 the access control circuit 31 . 32 form, operating voltage from the battery 36 , This symbolizes in 3 the curve B. This will be the access control circuit 31 . 32 from its sleep mode to an active state in which it immediately begins the encoder facility 43 of the key 41 query. If the query leads to a positive result, the motor will be at a time t2 21 briefly energized, so that the coupling device 19 closes. This is in 3 symbolized by the front rise of a curve K.

The timer circuit 46 leaves the operating voltage for a period of time at the access control circuit 31 . 32 which lasts until a time t4. This time span may be, for example, 10 seconds or set to another value.

After the coupling of the coupling device, ie between the times t2 and t3 in 3 is the handle 3 rotatably with the closing member 18 connected, leaving the door 2 from the outside by turning the handle 3 can be opened and closed.

The access control circuit 31 . 32 monitors the passage of the time window t1, t4 and disengages the coupling device 19 before expiry of the same. For this purpose, at the time t3, the engine 21 briefly energized to the clutch 19 to transfer in Endkuppelstellung. After this is done, the operating voltage from the code evaluation circuit 45 and the transmitting and receiving circuit 44 taken back at the time t4, bringing the entire access control circuit 31 . 32 is again in sleep mode, in which she consumes no power.

The access control circuit 31 . 32 may be provided to improve the ease of use with a permanent opening function. This feature can be triggered, for example, by the handle 3 Kept for a long time, that is held axially displaced. In this case, the code evaluation circuit recognizes 45 the intention of the user to allow the door operation from the outside for a long time and waived at the time t3 on the opening of the coupling device 19 , It remains the handle 3 thus rotationally fixed to the closing member 18 coupled. Only after renewed short operation of the handle 3 formed button is the coupling device 19 then separated.

The code evaluation circuit 45 can be programmed to a single access code or, if necessary, by different access codes. Lock systems can thus be set up with keys that can each open one or more locks, with the lock groups thus formed also being able to overlap.

It is possible the access control circuit 31 . 32 by programming a programming device to program. For example, a corresponding connection in the inside of the housing 15 be provided. However, it is also possible to provide a privileged card which, when in the range of the antenna 39 is brought, the access control circuit 31 . 32 transferred into a programming mode in which the code of the next created card is adopted as an access code. In this way, access control circuits 31 . 32 be easily programmed and reprogrammed by the owner of the privileged card. It is also possible in the handle 16 to accommodate a programming switch that is only accessible if the handle 16 opened, ie the housing 15 is removed. Upon actuation of the programming switch is at the same time to the handle 3 created keys 41 programmed as a valid key.

The castle 1 can also be designed as a one-sided lock, like the 4 and 5 illustrate in horizontal or vertical longitudinal section. It differs from the castle after the 1 and 2 in that the handle 16 not applicable and the cylinder housing 9 not over the closing element 18 extends beyond. The access control circuit 31 . 32 is completely in the handle 3 accommodated. Otherwise, the structure is as follows:
The cylinder housing 9 indicates at its the closing member 18 facing end of a bearing ring 51 on top of the sleeve 13 is interspersed. This carries at one end the closing member 18 , Inside the cylinder housing 9 it widens cup-shaped, being with the cylinder housing 9 limited an annular gap. In this sits a sleeve-shaped hub 52 that in their function of the shaft 7 at the castle 1 to 1 equivalent. The hub 52 is for example axially displaceable by 1 mm and thereby rotatable in the cylinder housing 9 stored. The limitation of the axial movement can be achieved by an annular collar 53 take place in the annular recess 29 attacks.

At the out of the cylinder housing 9 protruding end carries the hub 52 a radial flange 54 to which the case 4 is attached.

In the sleeve 13 is a non-rotatable with the radial flange 54 and thus with the housing 4 connected wave 55 that against the sleeve 13 is rotatable. The sleeve 13 and the wave 55 form coupling halves of the coupling device 19 , The coupling halves can through the locking pin 24 rotatably connected to each other. For radial positioning of the same serves the engine 21 , which rotates with the shaft 55 is connected and extends radially away from this. The wave 55 has a longitudinal bore into which the output shaft of the engine 21 protrudes. On the output shaft sits a worm 56 that with a spring wire 57 combs. The latter stands with the locking pin 24 engaged. At its opposite end, it is preferably mounted deflectable on a resilient suspension device, which by a transversely through the longitudinal bore of the shaft 55 extending pen 58 and associated springs is formed.

This type of coupling device has the significant advantage of simple operation for itself. Will the engine 21 energized and turns the snail 56 becomes the spring wire 57 deflected, either so that he the locking pin 25 in 5 up or in 5 moved down. If the locking pin is adjusted and the engine is running 21 for a short time he does not block but the spring wire 57 hops over the continuing spiral 56 , This type of coupling device 19 It is very simple and sturdy and it is particularly easy to control. Because the engine 21 It also saves energy while it is not blocked.

The hub 52 is rotatably with the shaft 55 connected, but axially displaceable against this. Will the handle 3 axially against the force of the spring 26 Pressed the switch speaks 37 at ( 4 ), here in the handle 3 is arranged and the relative movement of the housing 4 against the wave 55 and the circuit board carried by this 59 used as a switching movement. Read the antenna 39 after activating the access control circuit 31 . 32 by axial pressing a valid code, it controls the engine 21 in the opening direction, whereby the locking pin 24 transferred to the coupling position or is biased to this. The lock can now be opened or closed. After expiration of a given opening time, the engine will start 21 briefly energized in the opposite direction to the locking pin 24 in release position to transfer. After that is the access control circuit 31 . 32 switched off again and the locking member 18 is from the handle 3 decoupled.

In addition, the description of the 1 to 3 for the 4 and 5 corresponding.

An electronic lock operates battery-backed, with an existing in the lock access control circuit 31 . 32 is usually in a sleep mode, where it consumes no power. The access control circuit 31 . 32 is only required if necessary by means of a wake-up device 47 activated, ie transferred to an active status for a certain time. Turning on the access control circuit 31 . 32 is done by pressing a button on the outer control knob. This results in a simple intuitive operation.

Claims (18)

Lock with at least one handle ( 3 ), which is used to actuate a closure member ( 18 ) is rotatably mounted and additionally axially displaceable, with a coupling device ( 19 ) between the handle ( 3 ) and the closing member ( 18 ) is arranged with an electronic access control circuit ( 31 . 32 ), the coupling device ( 19 ) to selectively engage and disengage it, and with a waking device ( 47 ) connected to the access control circuit ( 31 . 32 ) is temporarily connected to a power-saving Sleep mode into an active state, and with the handle ( 3 ) is connected to by an axial actuation of the handle ( 3 ) to be activated. Lock according to claim 1, characterized in that the wake-up device ( 47 ) by axial movement of the handle ( 3 ) to be closed electrical switch ( 37 ). Lock according to claim 1, characterized in that the wake-up circuit ( 47 ) with a timer circuit ( 46 ), the access control circuit ( 31 . 32 ) for a given time slot into its active state. Lock according to claim 1, characterized in that the access control circuit ( 31 . 32 ) is de-energized in the sleep state. Lock according to claim 1, characterized in that the coupling device ( 19 ) Motor is actuated. Lock according to claim 1, characterized in that the access control circuit ( 31 . 32 ) the coupling device ( 19 ) opens before she goes into her sleep state. Lock according to claim 1, characterized in that for supplying the access control circuit ( 31 . 32 ) a battery ( 36 ) is provided. Lock according to claim 1, characterized in that the handle ( 3 ) at least one to the access control circuit ( 31 . 32 ) connected antenna ( 39 ), which is used for the wireless transmission of information between a key ( 41 ) and the access control circuit ( 31 . 32 ) serves. Lock according to claim 8, characterized in that the antenna ( 39 ) on a substantially flat front side of the handle ( 3 ) is arranged. Lock according to claim 9, characterized in that the handle ( 3 ) through a metal housing ( 4 ) is formed, which has on the front side a window which is closed by an insulating material. Lock according to claim 1, characterized in that the key ( 41 ) by a card ( 42 ) with an electronic code carrier ( 43 ) is formed. Lock according to claim 1, characterized in that the code carrier ( 43 ) by the access control circuit ( 31 . 32 ) is queriable. Lock according to claim 1, characterized in that the handle ( 3 ) by a spring means ( 26 ) is biased to an end position. Lock according to claim 1, characterized in that the lock ( 1 ) is designed as a lock cylinder. Lock according to claim 1, characterized in that at the lock ( 1 ) two coaxial to the same axis of rotation handles ( 3 . 16 ) are provided, one of which in constant communication with the closing member ( 18 ) stands. Method for safe and battery-saving operation of a battery-backed lock ( 1 ) with a motor-actuated clutch ( 19 ), in which an access control circuit ( 31 . 32 ) is activated by a keystroke from a de-energized sleep state and then kept in operation only for a given time, the access control circuit ( 31 . 32 ) the engine ( 21 ) shortly before the end of the service interval, to start the clutch ( 19 ) to open. Method according to claim 16, characterized in that that the control is omitted if the clutch during the Operating interval has not been closed. Method according to claim 16, characterized in that that one over a minimum operation time In addition, continuous pressing the access control circuit in one Continuous operation offset with a then given short key press in the sleep state leads back.