CN1209856A - Lock - Google Patents

Abstract

The invention relates to a lock with an operating device for a bolt (1), into which, in the open position, a staple (20) engages. The lock can be brought into lock-position manually, and the bolt (1) is spring-biased in locking-direction. Furthermore, the operating device (50 to 53) is connected with the bolt (1) by means of an electromechanical coupling device (30, 40, 60, 70). This particularity of this coupling device is that it creates a spring-actuated connection between the operating device (50 to 53) and the bolt (1) only when the bolt (1) is in lock-position, and only after an electric control command. The electric control command can be produced in particular by insertion of a coded card in a reader device, or without contact by means of a transponder.

Description

Lock

The present invention relates to a lock having a manual mechanism for moving a bolt between a locked position and a released position in which a tumbler operatively connected to the manual mechanism engages the bolt.

In such locks, the manual mechanism is usually formed by a key. We also generally know a so-called "card" type lock, in which the manual mechanism is constituted by a knob or a door handle, but said handle acts not on the bolt, but on a bolt that is spring-loaded in the locking direction , and only when the reader in the lock has read a valid inserted card and then sends an electrical control command to the electromechanical connection mechanism, the connection mechanism then forms a force-transmitting connection structure between the bolt and the manual mechanism.

The present invention is based on such object: design above-mentioned kind of lock, although it can be turned into its locking position from its unclamping position by manual mechanism, it only after detecting a verified card or verified transponder, It is only allowed to open the lock in the opposite direction.

According to the invention, this object is achieved by a bolt which is subjected to spring force in the locking direction and a manual mechanism which is connected to the bolt by means of an electromechanical connection which is only in the locked position of the bolt and only when received. After the electric control command forms the connection of power transmission between the manual mechanism and the dead bolt, but once the dead bolt is located on its loosening position again, it cancels the connection relationship of this power transmission at once.

Thus, although the manual mechanism allows the bolt to be brought into its locked position, it is then disengaged from the bolt until the electromechanical linkage receives an electrical command, which then creates a force-transmitting connection between the manual mechanism and the bolt until. The electrical commands are issued by a reader, which is usually incorporated into the lock and reads an inserted card or transponder. Such a reader is prior art and thus it is not part of the present invention.

For example, the proposed lock is suitable for incorporation in safes, locker rooms and facilities intended only for individuals or a specific group of people such as saunas, swimming pools, tennis courts, as is the case in many hotel facilities for example. By assembling the same reader, the lock proposed by the present invention can have a common structure with the house door lock.

The electromechanical connection mechanism preferably includes a slide block that can be moved by a manual mechanism and a pawl-type interlocking mechanism, wherein the locking tongue is movably guided in the slide block, and the pawl-type interlocking mechanism makes the sliding block in the connected state. The block is force-transmittingly connected to the bolt (claim 2). A manual mechanism, usually a knob or handle, is here permanently attached to the slider, but the slider only engages the deadbolt when commanded electronically.

Advantageously, the slider can be moved from its rest position into said release position against the force of the spring (claim 3). As a result, this can return the slider and manual mechanism to their initial or rest positions.

The slider can also be moved in the locking direction from its rest position against the force of the spring, which in its final position cancels the effective connection between the tumbler and the bolt (claim 4). For this purpose, the slide can have, for example, a bevel. When the slider moves in the locking direction, the ramp lifts the spring-loaded tumbler away from the bayonet provided in the deadbolt. Next, spring force acting on the slider returns the slider and manual mechanism to their rest positions.

According to a preferred embodiment of the invention, the detent interlocking mechanism comprises a detent pivotally mounted on the slider and a recess in the bolt, said axis being perpendicular to the main plane of the lock and The latch engages the recess in the connected state (claim 5). Therefore, only a small force is required to turn the catch.

It is also possible to further refine the above-described embodiment in that the catch is spring-loaded in the direction of the bolt recess (claim 6). In a suitable spatial arrangement of the pawl and the corresponding bolt recess, the spring force provides the force for turning the pawl into the connected state. However, the catch can also be configured such that it automatically falls into the deadbolt recess due to the force of gravity. In this case, however, the lock can no longer be adapted for both left-hand and right-hand hinged doors simply by turning the lock 180 degrees.

According to a preferred embodiment of the invention, the catch in its disengaged state contacts a slide which can slide into a position where the connected state is established by releasing the catch by an electromechanical mechanism (claim 7). In this embodiment, the electromechanical drive mechanism acting on the slide, such as a coil or a micromotor itself requires only low-power electrical energy. This is particularly advantageous with regard to constructional dimensions and battery life when the electronic component of the lock is a rechargeable battery.

In the simplest configuration, the carriage is arranged parallel to the slide and is movable parallel to the slide (claim 8). As a result, the insertion depth of the lock is very small.

Advantageously, the detent is a double-armed rocker (claim 9). Thus, one of the lever arms is designed to cooperate with the notch of the deadbolt, while the other lever arm remains in contact with the slide in the disengaged state of the catch until the electromechanical drive mechanism moves the slide into the released position.

In the connected state, the slider drives the bolt during its movement in the opening direction towards its released position, where the tumbler comes into play and retains the bolt which has returned to its rest position. The block is forced out of its force-transmitting connection with the bolt (claim 11 ). In this way, irrespective of the functioning of the electromechanical elements, it is always ensured that the bolt is brought into its locked position by the manual mechanism, but cannot be returned to its released position purely by mechanical operation.

The manual mechanism is designed as a rotating part and it has a pin which engages in a guide groove of the slider (claim 12). In this case, the pin can be designed with a predetermined breaking point, so that brute force will result in destruction of the entire lock structure.

In a development of the above-described embodiment, the guide groove is V-shaped and symmetrical with respect to the longitudinal axis of the slider (claim 13). Depending on which side of the guide slot cooperates with the pin of the manual mechanism, although the direction of actuation remains the same, the direction of movement of the slider changes, so that the lock can be selectively used for right-handed or left-handed doors.

In the accompanying drawings an embodiment of the lock according to the invention is shown, in which the electronic components are omitted (except for the electromechanical drive mechanism), in which:

Figure 1 is an exploded view of the components necessary for the lock to function;

Figure 2 is a plan view of the lock showing the deadbolt in the released position, wherein the housing is shown from a section parallel to the main plane of the lock;

Figure 3 is the same view as Figure 2, but with the bolt in the locked position;

Fig. 4 is the same view as Fig. 3, but it represents the situation after forming the force-transmitting connection between the deadbolt and the actuating mechanism;

Figure 5 is the same view as Figure 4 but showing the deadbolt immediately after it has been retracted to the released position.

FIG. 1 shows a bolt 1 which is composed of a bolt body 10 and a guide section 11 . The deadbolt body 10 is acted upon by a compressed coil spring 12 . The guide section 11 has a bayonet opening 13 into which a spring-loaded tumbler 20 with a bevel 21 engages in the released position of the bolt 1 .

In addition, the guide section 11 has a recess 15 and it can slide in a slide 30 which has, on one side, a bevel 31 capable of cooperating with the bevel 21 of the tumbler 20 . A stop pin 32 is provided on the slide 30 . This stopper pin compresses a coil spring 33 fitted in a hole provided on one side of the slider 30 when the slider 30 moves in the opening direction, ie, rightward in the drawing.

On the opposite side, the slider 30 has a recess in which a rocker 40 mounted rotatably about an axis perpendicular to the main plane of the lock is arranged. An extension spring 41 links to each other with this fork 40, and the other end of this extension spring is fixed on the slide block 30 and tries hard to make fork 40 rotate to the position shown in the figure, and on this position, a lever arm turns into deadbolt guide In the notch 15 of the segment 11.

A reed 36 is in contact with the surface of the slider 30 facing the deadbolt body 10 . The slider 30 is provided with a V-shaped guide groove 37 on its bottom side, which groove is symmetrical with respect to the longitudinal axis of the slider 30 . The guide 37 moves the slider 30 by means of a manual mechanism represented by a disc 50 in the center of which is provided a square hole 51 for receiving a square pin 52 . On the edge of the disc 50 is provided a pin 53 which fits into one side of the guide groove 37 .

A slide 60 with a recess 61 for the other lever arm of the rocker 40 is located on the side of the slide 30 . The slide 60 is acted upon by a compressed coil spring 62 and can be pulled for a distance in the direction of this coil against this spring force by a small electromagnet or a coil 70 whose armature rod 71 is connected to the slide 60 for this purpose.

FIG. 2 shows the above components housed in a plastic lock housing 80 . The lock housing includes a diaphragm 81 enclosing a cavity 82 for accommodating a battery and electrical control circuits (not shown) for the coil 70 . In addition, the web 81 serves as a stop for the bolt guide section 11 , the locking pin 32 of the slider 30 and the slider 30 itself (see FIG. 5 ).

The bolt is in its released position, in which the bolt is held by spring-loaded tumblers 20 embedded in the bayonet 13 . Slider 30 is in its rest position determined by spring 33 and reed 36 (see FIG. 1 ). The swing rod 40 turns into the notch provided on the side of the slide block 30 and contacts the side of the slide seat 60 through the lever arm on the left. in the rest position. The extension spring 41 acting on the fork 40 is tensioned.

Now, when the manual mechanism 50-53 (assuming that they are behind the drawing) is turned a small angle in the locking direction, that is, counterclockwise when viewed from above, the sliding block 30 inclined surface 31 cooperating with the inclined surface 21 of the tumbler 20 Lift the tumbler ramp out of the bayonet 13 of the guide section 11 of the bolt 1 .

The bolt 1 thus released is pushed forward by the pre-tensioned compression coil spring 12 into the locked position shown in FIG. 3 . At the same time, the slider 30 is urged by the reed 36 to return to its illustrated rest position. All other moving parts remain in their positions as shown in FIG. 2 . Subsequently, although the slider 30 can move in the opening direction by turning the manual mechanism clockwise, it does not carry the deadbolt 1 with it.

Only when the coil 70 receives a short current pulse-shaped control signal from the electric control circuit, the force transmission connection between the slider 30 and the guide section 11 of the deadbolt 1 is formed. Next, the coil 70 pulls the slider 60 into the position shown in FIG. 4 , ie the slider is pulled through the armature rod 71 against the spring force of the compression coil spring 62 . Thus, due to the pushing action of the tension spring 41, the swing link 40 can freely turn into the position shown in the figure. In this position, one lever arm falls into the recess 15 of the guide section 11 , while the other lever arm rests in the recess 61 of the carriage 60 . Simultaneously or substantially simultaneously the carriage 60 returning to its rest position acts on the rocker 40 in the same direction of rotation as the tension spring 41 . The resulting force-transmitting connection of the slider to the bolt remains in the position shown in FIG. 4 for as long as required.

When the manual mechanism is then rotated clockwise, its pin 53 drives the slide block 30 and the slide block drives the guide section 11 through the fork 40 and then drives the dead bolt 1 until the dead bolt reaches the release position shown in FIG. 5 . During this movement, the compression coil spring 33 inside the slider 30 is tensioned by the stop pin (see FIG. 1 ). In this position, the spring-loaded tumbler 20 quickly snaps back into the bayonet 13 . When the manual mechanism is released, the compression coil spring 33 relaxes, thereby returning the sliders and thus the manual mechanisms 50-53 to their rest positions. During the return stroke of the slider 30, the arm of the swing link 40 in the notch 15 of the guide section 11 slides along the side 15a of this notch (see Figure 1), and it thus turns back to its initial position parallel to the guide section 11. . In this way, whenever the lock is unlocked, the force transmission connection relationship between the slider 30 and the guide section 11 is automatically canceled. Now tension spring 41 again. Once the end of the fork 40 that advances along the moving direction of the slider passes over the adjacent edge of the notch 61 of the slide seat 60, the fork is in the position shown in Figure 2, that is, the side surfaces of the left arm and the slide seat 60 are in contact with each other. And lock the swing lever. At this point the lock is ready for a new locking operation.

Claims (13)

1. A lock comprising a manual mechanism for moving a bolt (1) between a locked position and a released position in which a tumbler (20) operatively connected to the manual mechanism (50-53) It engages with the lock tongue (1), which is characterized in that the lock tongue (1) bears spring force in the locking direction, and the manual mechanism (50-53) is connected to the lock tongue (30, 40, 50, 70) through an electromechanical connection mechanism The locking bolt (1) is connected, the electromechanical connection mechanism is only in the locked position of the locking bolt (1) and only after receiving a short electric control signal A force-transmitting connection is produced, but as soon as the bolt (1) is in its released position again, it cancels said force-transmitting connection. 2. The lock according to claim 1, characterized in that the connecting mechanism (30, 40, 50, 70) comprises a slider (30) movable by a manual mechanism (50-53) and a latch locking mechanism ( 40,15), the lock tongue (1) is movably guided in the slider (30), and the latch locking mechanism connects the slider (30) to the lock tongue (1) in a force-transmitting manner in the connected state. 3. 2. Lock according to claim 2, characterized in that the slider (30) is movable from its rest position into said release position against a spring force (33). 4. Lock according to claim 2 or 3, characterized in that the slider (30) is also movable in the locking direction from its rest position against a spring force (36), which cancels the tumbler (20) when it is in its final position. ) and the effective connection relationship between the deadbolt (1). 5. The lock according to any one of claims 2-4, characterized in that the catch locking mechanism comprises a catch (40) which is rotatably mounted on the slider (30) around a shaft and a catch (40) mounted on the bolt ( 1) a notch (15) in which said axis is perpendicular to the main plane of the lock and the catch (40) engages the notch (15) in the connected state. 6. 5. Lock according to claim 5, characterized in that the pawl (40) is spring-loaded in the direction of the recess (15) of the bolt (1). 7. A lock according to claim 5 or 6, characterized in that the pawl (40) in its disengaged state is in contact with a slide (60) which can slide into a ) The position where the detent (40) is released to form a connected state. 8. The lock according to claim 7, characterized in that the sliding seat (60) is arranged parallel to the sliding block (30) and is movable parallel to the sliding block. 9. A lock according to any one of claims 5-8, characterized in that the pawl (40) is a double-armed rocker (40). 10. 9. The lock according to claim 9, characterized in that the slide (60) has a recess (61) in which a lever arm is located in the released position of the rocker (40). 11. The lock according to any one of claims 2-10, characterized in that, in the connected state, the slider (30) drives the bolt (1) during its movement in the opening direction to its release position, and the tumbler (20) Fixing the deadbolt in this released position, and the slide (30) which has returned to its rest position, forcibly disengages its force-transmitting connection with the deadbolt (1). 12. The lock according to any one of claims 1-11, characterized in that the manual mechanism (50-53) is designed to be rotatable and it has a pin that engages with a guide groove (37) of the slider (30) (53). 13. The lock according to claim 12, characterized in that the guide grooves (37) are V-shaped and distributed symmetrically with respect to the longitudinal axis of the slider (30).

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