Door locking device, especially electromagnetic door locking device

Abstract

The invention relates to a door locking device (10), in particular an electromagnetic door locking device (10), for a door with a plunger (14) arranged linearly movable in an energizable or energized coil (18) for a locking element, in particular a locking bolt (12), of the door, wherein the plunger (14) is or is moved linearly between a closed position and an open position, wherein the plunger (14) is coupled at one end side by means of a rotatably mounted rocker (15) to a, preferably rigid, weight body (16), wherein the weight body (16) is linearly movable, wherein in the closed position of the plunger (14) the weight body (16) is or is subjected to a force directed in the direction of the rocker (15) by means of a, in particular pre-tensioned, spring device (17).

Description

[0001] The invention relates to a door locking device, in particular an electromagnetic door locking device, for a door or the like.

[0002] It is known in the prior art that a rotary latch is used to lock a door, flap, or the like, in order to hold the door or flap in a closed position. The rotary latch has a recess which, in the closed position, receives a locking bolt or strike plate during the closing movement of the door. To lock the rotary latch, it is pivoted into a locked position such that the movement of the locking bolt or strike plate is blocked. To hold the rotary latch in the locked position, a locking pawl or similar device is provided to prevent the rotary latch from pivoting into the unlocked position, which would release the locking bolt or strike plate.

[0003] For example, an electromagnetic door lock with a rotary latch is disclosed in DE 40 31 077 A1. Another electromagnetic door lock is known from EP 3 348 755 B1.

[0004] One object of the invention is to provide a simple and vibration-resistant, in particular electromagnetic, door locking mechanism.

[0005] This problem is solved by a door locking device, in particular an electromagnetic door locking device, for a door with a plunger arranged linearly movable in an energizable or energized coil for a locking element, in particular a locking bolt, of the door, wherein the plunger is or is moved linearly between a closed position and an open position, wherein the plunger is coupled at one end side by means of a rotatably mounted rocker to a, preferably rigid, weight body, wherein the weight body is linearly movable, wherein in the closed position of the plunger the weight body is or is subjected to a force directed in the direction of the rocker by means of a, in particular pre-tensioned, spring device.

[0006] The invention is based on the idea that by using a pre-tensioned weight, in particular a counterweight for the plunger, a vibration-resistant and shock-resistant door locking device is created, wherein the door locking device is mechanically simple in design and is also easy to control. This provides a reliably functioning locking device. To open the door locking device and release the locking element, the coil is energized, so that the plunger and a latch connected to the plunger are moved towards the rocker arm, thereby exerting a counterforce on the spring device acting on the weight.

[0007] According to a further development of the door locking device, the weight, in particular the rod-shaped weight, is directly coupled to the rocker arm. This connects the linearly movable or movable weight, in particular the counterweight for the plunger, to the rocker arm on one side. The other side of the rocker arm is connected to the plunger, which is arranged to be linearly movable within the coil. The weight is preferably subjected to a force, in particular a continuous force, by the pre-tensioned spring device in the closing and / or opening position of the plunger, in order to move the plunger into the closing position. When the coil in which the plunger is movably arranged is energized, the plunger is moved linearly from the closing position to the opening position, so that the plunger exerts a counterforce on the weight in the opening position via the rotatable rocker arm.

[0008] According to an advantageous embodiment of the door locking device, the linear direction of movement of the plunger is parallel to the linear direction of movement of the weight. This ensures that, for example, in the event of mechanical impacts or vibrations on the door locking device, the acceleration forces act equally on both sides of the rocker arm, affecting the plunger and the weight, so that the plunger or the latch connected to the plunger remains in the locked, particularly the upper, position.

[0009] Preferably, according to one embodiment, the rocker has one lever arm for the plunger and one lever arm for the weight. The rotatable rocker is connected to the plunger and the weight, respectively, at the corresponding lever arm.

[0010] Furthermore, one design of the door locking device is characterized by the fact that the length of the lever arm of the rocker for the plunger and the length of the lever arm of the rocker for the weight body are the same or different.

[0011] According to an advantageous embodiment, the door locking device is designed such that the coil is energized to move the plunger from the closed to the open position. In a further preferred embodiment, the plunger is connected to a locking element or the like to hold or lock the door's locking element, in particular the locking bolt, in the closed position of the door locking device.

[0012] Preferably, the plunger is equipped with a locking latch, in particular a soft magnetic one, at the end facing away from the rocker.

[0013] In a further embodiment of the door locking device, the door locking device has a rotary latch for the door to be locked, with the plunger being positioned in the closed position of the rotary latch. To open the rotary latch, the plunger is moved linearly by energizing the coil, in order to release the rotary latch, in which the door's locking element is located.

[0014] Furthermore, the door locking device is characterized in another aspect by the fact that the door locking device has a locking monitoring sensor for monitoring the locking status of the door locking device, in particular for monitoring the locking status of the lock latch and / or the rotary latch.

[0015] Advantageously, the spring device, especially the pre-tensioned one, is designed as a compression spring.

[0016] Further features of the invention will become apparent from the description of embodiments according to the invention, together with the claims and the accompanying drawings. Embodiments according to the invention may fulfill individual features or a combination of several features.

[0017] Within the scope of the invention, features marked with "in particular" or "preferably" are to be understood as optional features.

[0018] The invention is described below, without limiting the general concept, with reference to exemplary embodiments and the drawings, whereby for all details of the invention not explained in detail in the text, explicit reference is made to the drawings. The drawings show: Fig. 1a schematically shows a cross-section through a door locking device according to a first embodiment, wherein the locking device is in the open position; Fig. 1b schematically shows a cross-section through the door locking device made of Fig. 1a in the closed position; Fig. 2 schematically a perspective view of the door locking device and Fig. 3 schematically a perspective view of a door locking device according to a further embodiment.

[0019] In the drawings, identical or similar elements and / or parts are provided with the same reference numbers, so that a re-presentation is omitted.

[0020] In Fig. 1a and Fig. 1b Cross-sectional views of a door locking device 10 according to a first embodiment are shown. Fig. 1a shows the door locking device 10 in the open position, while Fig. 1bThe door locking device 10 is illustrated in the closed position. The door locking device 10 is preferably mounted in a fixed position on one side.

[0021] The door locking device 10 has a latch 13 for a locking bolt 12 of a hook 22 of a door or the like. The latch 13 is connected to a rotatable rocker 15 via a linearly movable or movable plunger 14. Furthermore, the door locking device 10 has a counterweight 16, designed as a weight body, on the other side of the rocker 15 for the plunger 14 and the latch 13 connected thereto. A pre-tensioned spring 17, in particular a compression spring, is arranged on the side of the counterweight 16 facing away from the rocker 15 in order to exert a force on the linearly movable or movable counterweight 16 in the direction of the rocker 15 and to press it. The counterweight 16 and the pre-tensioned spring 17 load one side of the rocker 15.

[0022] The lock latch 13 is made of a soft magnetic material, in particular soft magnetic steel, and is surrounded by a coil 18. Alternatively or additionally, the plunger 14 is made of a soft magnetic material, in particular soft magnetic steel.

[0023] The door (not shown here) can be opened manually or by motor (compare Fig. 1a ) into the closed position (compare Fig. 1b ) by a movement, in particular a linear movement, by pressing the locking bolt 12 against an ascending slope of the lock latch 13 facing the locking bolt 12 in the open position of the door locking device 10.

[0024] The latch 13, guided in the coil body of the coil 18, is pressed downwards, causing the plunger 14 and the latch 13 to perform a linear movement within the coil 18. The pre-tensioned spring 17 is compressed via the plunger 14, the rocker 15, and the counterweight 16. Once the locking bolt 12 is brought into the locked position via the latch 13, the spring 17, via the counterweight 16, the rocker 15, and the plunger 14, pushes the latch 13, preferably back upwards, into its initial position (compare Fig. 1a ), whereby the locking bolt 12 of the hook 22 is locked.

[0025] To open the door locking device 10, the coil 18 is energized, drawing the soft magnetic latch 13 into the coil 18. This causes the plunger 14 to perform a linear movement within the coil 18, releasing the locking bolt 12. The linear movement of the plunger 14 exerts a force and counterforce via the rocker 15 on the coupled spring 17, compressing the spring 17 when the door locking device 10 is opened.

[0026] The linear movement of the plunger 14 is parallel to the linear movement of the counterweight 16 coupled to it via the rocker 15.

[0027] In the event of mechanical impacts or vibrations in the direction of the linear movement of the plunger 14 and the counterweight 16, acceleration forces act on the latch 13 and the counterweight 16, with the forces acting equally on both sides of the rocker 15, so that the latch 13 remains in the locked (upper) position.

[0028] In Fig. 2 is a perspective view of the door locking device 10 according to the one in the Fig. 1a and 1bThe embodiment shown is illustrated. In this configuration, the door locking device 10 has a locking monitoring sensor 20, by means of which the locking of the locking bolt 12 in the closed position of the locking device 10 is monitored. For example, the locking monitoring sensor 20 is designed as a touch sensor, preferably an electromechanical one. In the locked position of the locking bolt 12, an electrical signal is triggered within the locking monitoring sensor 20 when the locking bolt 12 makes mechanical contact with a movable sensing element 21 of the locking monitoring sensor 20.

[0029] At the in Fig. 3In a further embodiment, the door locking device 10 shown has a rotary latch 30 for the locking bolt 12, wherein the locking bolt 12 is received in the locking position in a locking bolt receptacle 31 of the rotary latch 30.

[0030] All features mentioned, including those discernible from the drawings alone as well as individual features disclosed in combination with other features, are considered essential to the invention, both individually and in combination. Inventive embodiments may be fulfilled by individual features or by a combination of several features. Reference symbol list

[0031] 10 Door locking device 12 Locking bolt 13 Latch 14 Piston 15 Rocker 16 Counterweight 17 Spring 18 Coil 20 Locking monitoring sensor 21 Touch probe 22 Hook 30 Rotary latch 31 Locking bolt receptacle

Claims

1. Door locking device (10), in particular electromagnetic door locking device (10), for a door with a plunger (14) arranged linearly movable in an energizable or energized coil (18) for a locking element, in particular a locking bolt (12), of the door, wherein the plunger (14) is or is moved linearly between a closed position and an open position, wherein the plunger (14) is coupled at one end side by means of a rotatably mounted rocker (15) to a, preferably rigid, weight body (16), wherein the weight body (16) is linearly movable, wherein in the closed position of the plunger (14) the weight body (16) is or is subjected to a force directed in the direction of the rocker (15) by means of a, in particular pre-tensioned, spring device (17).

2. Door locking device (10) according to claim 1, characterized by the fact that the, in particular rod-shaped, weight body (16) is directly coupled to the rocker (15).

3. Door locking device (10) according to claim 1 or 2, characterized by the fact that the linear direction of movement of the plunger (14) is parallel to the linear direction of movement of the weight body (16).

4. Door locking device (10) according to one of claims 1 to 3, characterized by the fact that the rocker (15) has a lever arm of the rocker (15) for the plunger (14) and a lever arm of the rocker (15) for the weight body (16).

5. Door locking device (10) according to claim 4, characterized by the fact that the length of the lever arm for the plunger (14) and the length of the lever arm for the weight body (16) are the same or different.

6. Door locking device (10) according to one of claims 1 to 5, characterized by the fact that for the movement of the plunger (14) from the closed position to the open position the coil (18) is energized or is energized.

7. Door locking device (10) according to one of claims 1 to 6, characterized by the fact thatthe plunger (14) is formed at the end facing away from the rocker (15) with a lock latch (13), in particular a soft magnetic one.

8. Door locking device (10) according to one of claims 1 to 7, characterized by the fact that the door locking device (10) has a rotary latch (30) for the door to be locked, wherein in the closed position of the rotary latch (30) the plunger (14) is arranged in the closed position.

9. Door locking device (10) according to one of claims 1 to 8, characterized by the fact that the door locking device (10) has a locking monitoring sensor (20) for monitoring the locking status of the door locking device (10), in particular for monitoring the locking status of the lock latch (13) and / or the rotary latch (30).

10. Door locking device (10) according to one of claims 1 to 10, characterized by the fact that the spring device (17), in particular pre-tensioned, is designed as a compression spring (17).

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