EP0950783A1 - Controlling device with a cylinder lock - Google Patents

Abstract

A key (4) for operating the lock has teeth with control surfaces (7) for moving the pin keepers or tumblers (5), which are extended to the key tip. The amount of the extension of the control surfaces, corresponds to at least the engagement depth of the key in the coupling, so that the key pushes the pin tumblers already before the reaching of the coupling in the released position.

Description

The invention relates to a control device with a Lock cylinder for an electric motor and alternatively mechanical lockable lock, especially multi-bolt lock, wherein at least one cylinder core is rotatable in a housing is stored and spring-loaded pin tumblers through the teeth a key from a locked position to a release position are displaceable for twisting the cylinder core, the rotation of the cylinder core when fully inserted Key via a clutch to the cylinder housing outstanding locking nose is transferable and furthermore an electrical switch between the cylinder core and the housing, especially with magnets and reed contacts for input and if necessary Switching off the electric motor for the lock actuation is provided.

Both so-called engine cylinders are known, the one Have an electric motor in a knob of a double locking cylinder, as well as servo-operated locks with an electric motor, who intervenes in the lock mechanism. The activation the engine is accessible from the interior via freely accessible Buttons similar to a knob cylinder or hotel cylinder, which can also be operated from the inside without a key. In which inner cylinder connected to the knob or the electric motor A double locking cylinder therefore also lacks the pin tumblers. A key is inserted from the outside into the Key channel of the outward-facing cylinder core inserted, where the code correct toothing of the key Pin tumblers of this cylinder core in the release position (Division between cylinder core and housing bore) the cylinder core is then turned using the key and turned on Key switch can be operated. In addition to one mechanical switch actuation is also electronic Operation possible with reed contacts and permanent magnets.

In the event of a power failure, the lock actuation must be ensured be. It is therefore known to use backup batteries that the period until the energy supply is restored bridge.

The invention aims to operate a lock to enable each individual or system key so that an emergency key does not have to be used, but instead every beneficiary with his / her, Can lock the key immediately. This is achieved that the key, as known per se, is to shift the Pin tumblers has a toothing with control surfaces that are extended to the top of the key and that the extent the extension of the control surfaces at least the depth of engagement corresponds to the key in the coupling, whereby the key the tumbler before reaching the Clutch moves to the release position. In normal operation the key works without clutch actuation. But it can as known with an emergency key of a double locking cylinder, the cylinder core can already be rotated as this is the allow extended control surfaces of the key toothing. With the rotation of the cylinder core, e.g. by 30 ° to the left and or or to the right, there is an electrical switching process triggered the electromotive lock actuation starts. The multi-bolt lock as a typical lock, for which a motor drive is designed, can without Effort is blocked.

In the event of a power failure or when the batteries are empty or batteries, the key can be fully inserted. The key tip actuates the clutch or engages this. There is still division of the tumblers reached, so the rotation of the cylinder core also in the whole inserted key position guaranteed. As a result of effected coupling between cylinder core and locking lug rotates the locking nose when opening with the key along a circular path and transfers the force to the lock mechanism. As a coupling between the cylinder core and locking lug any known construction can be used that is reliable Torque transmission from the cylinder core, e.g. on a locking nose ring with locking nose. To do this for example axially displaceable claws possible in the cylinder core, when the key is fully inserted the key tip for coupling into the interior of the locking nose ring be taken against spring force. The claws as well the inner surface of the locking nose ring have positive locking elements to transfer the torque.

To a limited insertion for the switch actuation of distinguish between a complete insertion of the key a ball catch can be provided on the cylinder side, which noticeably fixes the first incomplete insertion depth. The ball catch can only be engaged with a further axial effort overcome and the key entirely in the key channel for a mechanical locking process.

See a variant of the slot limit for the key before that the insertion depth of the key into one Key channel limiting removable stop on the key is provided, which is preferably in a recess of the Key cross section includes push-in feather leaf, which extends from the key bow to the key shaft and the end face of the key cross section protrudes and in Seen in the longitudinal direction towards the tip of the key a firm stop for the full insertion depth of the key is.

So if the key is executed, it is already sufficient squeeze the key on the reed tightly to make one Spring catch, which forms the stop, push back and the Way for another full insertion of the key free. Alternatively, it is useful if a limiting the insertion depth of the key into a key channel Stop on the cylinder side as electromagnetically actuated Bolt is provided to which a stop surface of the Key is present and in the event of a power failure, in particular by spring force, is retractable and the full insertion path releases for the key. This version gives the insertion path the key is automatically released in the event of a power failure, so that only the effort during the locking process and on Because of the 360 ° rotation it can be determined that without motor assistance locked or opened.

An embodiment of the control device according to the invention is shown in the drawings. Fig. 1 shows one Longitudinal section of a so-called engine cylinder according to the invention, 2 shows a cross section along the line II-II in FIG. 1, FIG. 3 shows a variant of the key in a top view, FIG. 4 the key in side view, Fig. 5 is a longitudinal section by part of the engine cylinder of FIG. 1 with completely inserted key and Fig. 6 shows a cross section the line VI - VI in Fig. 5 with dash-dotted lines, the symbolize the lock mechanism.

A double lock cylinder according to FIGS. 1 and 5 has two rotatable cylinder cores 2 and 3 supported in a cylinder housing 1 on. The cylinder core 2 is actuated by a key 4, the pin tumblers 5 from a locked position to a release position shifts for rotation. The pin tumblers 5 each have a core and a spring-loaded housing pin on. The core pins protrude into the key channel 6 and are through control surfaces 7 in the tooth area of the key 4 (or the key chest) so that the contact surfaces the core pins with the housing pins exactly in the cylindrical core surface or bore surface of the cylinder housing lies. This corresponds to the usual function of a locking cylinder. The key 4 now has control surfaces 7, which in Are extended towards the tip of the key. This will the release position of the pin tumblers 5 (there are five Pairs of core and housing pins shown in Fig. 1 and Fig. 5, respectively) already reached before the key tip in the clutch 8 engages with locking nose ring 9 and locking nose 10 or actuated this. So that the key 4 in this position persists, there is either a ball catch in the cylinder core and a groove in the key shaft or a stop in accordance with FIG. 1 Form of a spring plate 11 is provided on the key 4. Just if the ball catch is due to increased effort when inserting of the key 4 in the key channel 6 overcome or the spring plate 11 is depressed, the key 4 fully inserted into the key channel 6 according to FIG. 5 become. The division remains unchanged.

In the position of the key 4 according to FIG. 1, the cylinder core can 2 are rotated without the clutch 8 and Locking nose ring 9 or locking nose 10 is also rotated. The Rotation of the cylinder core 2, e.g. by 30 ° to the left or right, triggers one or more switches, one of which here as reed contact 12 with control magnets 13, 14 (Fig. 2) is shown. A rotation of the cylinder core 2 after left or right is sent as a control signal to an electric motor 15 passed on, which is housed in the knob of the inner cylinder is and the tumbler cylinder core 3, if necessary actuated via a gear transmission. This is with the Locking nose ring 9 and with the locking nose 10 via the coupling 8 connected. The clutch 8 is only disengaged when the Key 4 according to FIG. 5 fully inserted into the key channel is and the key tip accordingly connecting elements (not shown) between locking nose ring 9 and cylinder core 3 pushes back. By a small turn with the Key 4 to the left or right is shown in FIG Electric motor 15, the locking lug 10 in the unlocking or locking direction (Clockwise or counterclockwise) moves. she drives a lock mechanism of a mortise lock in a known manner, e.g. a multi-bolt lock. Fig. 6 shows as Example a gear 16 in which the double lock cylinder is inserted and its locking lug 10 rotates the same, this directly or via further, not shown Gears that move racks 17, 18, 19 with Push rods or bolts are connected. The lock actuation 1 is particularly simple and without effort possible with complex multi-bolt locks.

However, if the power fails or a battery discharges then the effort must be exerted manually. For this purpose, the spring plate 11 or one according to FIGS. 3 and 4 Spring plate 20 attached to the side of the key cord indented so that it is no longer a stop against the Front side of the cylinder core 3 or the housing 1 acts, but can also be inserted into the key channel 6. As already explained above, there is still a key slot 5, the release position of the pin tumblers 5 received, because the core pins slide on the elongated Control surfaces 7, which are yes in the direction of insertion extend and an unchanged position of the pin tumblers 5 also during the key movement from FIG. 1 to FIG. 5 guarantee. The key tip moves the clutch 8 with from the cylinder core 3 and engages itself in the clutch 8 a (Fig. 6). Coupling elements can also be used the key tip pushed out of the cylinder core 2 and positively inserted in recesses of the locking nose ring 9 so that larger torques between the cylinder core 2 and locking nose ring 9 or locking nose 10 transmitted become. When the key 4 is turned immediately Turning the locking lug 10, the torque on the sprocket 16 (Fig. 6) transmits the racks 17, 18, 19th or push rods and bolts of a multi-bolt lock directly or with the interposition of further gear wheels shifts.

In this way, each key 4 has a double function, so that every person authorized to access without a power failure Emergency key is, as usual, access to the premises to get.

According to FIG. 1, the electric motor 15 can also be turned on in the knob elsewhere, e.g. in the multi-bolt lock or flanged to it be. He can also in the handle plate on the inside of the door be housed. The control of the electric motor is in any case detached from the mechanical lock actuation over the freely rotatable cylinder core 2 with its Switches for left and right rotation of the electric motor. It can be a double cylinder with a clutch that can be operated from both sides and cylinder cores 2, 3 each provided with pin tumblers 5 be when the electric motor is on the lock (Multi-bolt lock) attacks. The switches (reed contacts 12, In this case, magnets 13, 14) are a cylinder core 2 or also assigned to two cylinder cores 2, 3. So that Control of the engine (unlocking, locking) via the key done from inside and outside. It is usually separated at electric motors arranged directly by the double cylinder the lock mechanism act, be sufficient, a knob cylinder or hotel cylinders. It is about around a double lock cylinder that is not from the inside is operated by means of a key but by means of a knob. Of the Inner cylinder is tumbler-free and with clutch 8 or the locking nose ring 9 and the locking nose 10 firmly connected.

Claims (3)

Control device with a locking cylinder for an electromotive and, in the alternative, mechanically lockable lock, in particular a multi-bolt lock, wherein at least one cylinder core is rotatably mounted in a housing and spring-loaded pin tumblers can be displaced from a locked position into a release position for rotating the cylinder core by the teeth of a key, the Rotation of the cylinder core when the key is fully inserted can be transmitted via a coupling to a locking lug projecting beyond the cylinder housing and an electrical switch, in particular with magnets and reed contacts, is also provided between the cylinder core and the housing for switching the electric motor on and possibly off for the lock actuation, characterized in that the key (4), as known per se, has a toothing with control surfaces (7) for displacing the pin tumblers (5), which are extended towards the key tip and that s the extent of the extension of the control surfaces (7) corresponds at least to the depth of engagement of the key into the coupling (8), the key (4) moving the pin tumblers (5) into the release position before the coupling (8) is reached. Control device according to Claim 1, characterized in that a removable stop on the key which limits the insertion depth of the key (4) into a key channel (6) is provided, which preferably comprises a spring leaf (11, 20) which can be pressed into a recess in the key cross-section and which is extends from the key ring to the key shaft and the end face of which extends beyond the key cross section and, seen in the longitudinal direction towards the key tip, is preceded by a fixed stop for the full insertion depth of the key (4). Control device according to claim 1, characterized in that a stop limiting the insertion depth of the key (4) into a key channel is provided on the cylinder side as an electromagnetically actuated bolt, against which a stop surface of the key (4) bears and which can be pushed back in the event of a power failure, in particular by spring force and clears the full slot for the key (4).

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