EP1617019B1 - Electromechanical door lock - Google Patents

Abstract

The lock has a door lock housing (2) with a closing latch plate (3) in the housing and a protruding position which is lockable. An electrical operating device (4) in the housing withdraws the latch. A spring-tensioned cage (5) centers the latch plate in its blocking position in an opening of an impact plate (6). The cage has a central part which is mobile inside the housing having a wedge-shaped part. The wedge-shaped part is connected in relation to the central part which lags the wedge-shaped part. Actuatuors (7, 28) move according of the strength of the electrical operating device to the latch plate with a first closing device locked for the blocking the cage in its protruding position, during which the latch plate is in a blocking position. In longitudinal direction of the door lock housing the movable actuator is moved in a direction along the longitudinal axis of the door lock housing with the blockage of the latch plate. The latch plate during its movement in the door lock housing with the second actuator brings a connection to the cage. The second actuator of the first lock is spring-tensioned and has a swiver release (12) stored in the door lock housing.

Description

The invention relates to an electromechanical door lock according to the preamble of claim 1.

Such a door lock is from the DE 39 38 655 C2 known.

Although with the door lock according to this patent u. a. Even a simple structure is to be achieved, this goal can only be partially realized. Because according to the teaching of this patent, a single power transmission member is provided in the form of a movable in the longitudinal direction of the door lock actuator which cancels both the blocking of the bolt and the case in the course of its transfer movement. However, this combined function requires a relatively complicated structure of this transfer member so that it can engage with the two locking devices for the latch or the case for unlocking them.

It is therefore an object of the present invention to provide an electromechanical door lock specified in the preamble of claim 1 way, which allows a simplification of its structure over known constructions.

The solution of this object is achieved by the features of claim 1.

The fact that according to the invention the bolt is exploitable in its withdrawal into the door lock housing for unlocking the case, results in a considerable simplification of the overall construction and thereby a reduction in manufacturing costs.

The dependent claims have advantageous developments of the invention to the content.

Further details, features and advantages of the invention will become apparent from the following description of embodiments with reference to the drawing.

Figur 1:

eine schematisch leicht vereinfachte Darstellung einer ersten Ausführungsform eines erfindungsgemäßen Türschlosses in verriegelter Position;

Figur 2:

eine der Figur 1 entsprechende Darstellung in entriegelter Posi- tion;

Figur 3:

eine der Figur 1 entsprechende Darstellung eines nicht zur Erfindung gehörenden Beispiels , das als Beispiel zum Verständnis der Erfindung dient (ver- schlossene Tür und gesperrter Riegel);

Figur 4:

eine der Figur 2 entsprechende Darstellung des Beispiels gemäß Figur 3 , die als Beispiel zum Verständnis der Erfin- dung dient (entsperrter Riegel/geöffnete Tür);

Figur 5:

eine abgewandelte erfindungsgemäße Ausführungsform von Übertragungsgliedern zur Entriegelung der Falle (in Teilansicht);

Figur 6:

eine der Figur 5 entsprechende Darstellung eines Zwischenzu- standes und

Figur 7:

eine der Figur 6 entsprechende Darstellung bei zurückge- schlossener Position des Riegels und entsperrter Falle.

Show it:

FIG. 1:

a schematically slightly simplified representation of a first embodiment of a door lock according to the invention in the locked position;

FIG. 2:

one of the FIG. 1 corresponding representation in unlocked position;

FIG. 3:

one of the FIG. 1 corresponding representation of a non-inventive example, which serves as an example for understanding the invention (locked door and locked latch);

FIG. 4:

one of the FIG. 2 corresponding representation of the example according to FIG. 3 as an example for understanding the invention (unlocked latch / open door);

FIG. 5:

a modified embodiment according to the invention of transmission elements for unlocking the trap (in partial view);

FIG. 6:

one of the FIG. 5 corresponding representation of an intermediate state and

FIG. 7:

one of the FIG. 6 Corresponding illustration with closed position of the bolt and unlocked latch.

In the FIGS. 1 and 2 a first embodiment of an electromechanical door lock 1 according to the invention is shown.

The door lock 1 has a door lock housing 2 with a locking latch 3, which is guided in the door lock housing 2 movable. The bolt 3 can be in projecting position, as in FIG. 1 is locked and can be retracted by means of an electrical actuator 4 (eg., In the form of a suitable electric motor, possibly with gear) in the door lock housing 2.

The door lock 1 also has a spring-loaded latch 5, which serves to center the bolt 3 in its locked position in an opening of a baffle plate 6. This can be z. B. by a so-called cross latch according to DE 38 12 313 C2 be executed. The case 5 has in the illustrated embodiment a movable inside the door lock housing 2 central part 5b and a wedge-shaped part 5a, at least partially from the door lock 2 in the in FIG. 1 shown projecting position of the case 5 protrudes. The wedge-shaped part is connected to the central part 5b for enabling pivotal movement of the wedge-shaped part 5a relative to the central part 5b. As a result, the latch 5 can be pushed into the interior of the door lock housing 2 when a force acts on the wedge-shaped protruding part 5a from one or the other side of the door lock housing 2 in the direction of opening or closing a door provided with the door lock 1.

FIG. 1 further shows that the door lock 1 has first transmission links 7 and 28 which serve to transmit the force of the electric actuator 4 to the latch 3. The transmission member 7 is formed in the illustrated embodiment as a worm wheel which is rotatably mounted in the lock housing 2. The transmission member 7 has a pin 7a, which can engage with a driver 34 of an actuator 28 of the first transmission members 7,28, preferably in the form of a longitudinally movably mounted in the door lock housing 2 slide. The transmission member 7 is driven by the drive means 4, for example, arranged on the output shaft of the motor drive screw.

The door lock 1 also has a first locking device 10 for locking the latch 5 in its projecting position. This position is in FIG. 1 shown. In this position, the bolt 3 is also in the locked position.

The actuating or transmission member 28 is a component of the first transmission members and has a second locking device 11 for the bolt 3 in its locked position. FIG. 1 illustrates for this purpose that the bolt 3 has a pin 3a, which can slide along in a slot-like link 30 of the transmission member 28, which is each provided with at an angle to the slot 30 recesses 8 and 9, in which the pin 3a engage in its end positions can. In the locking position shown in Figure 1, the pin 3a is arranged in the recess 8, as can be seen in detail from the illustration of FIG. 1 opens.

As FIG. 1 further clarified, second transmission members 12 and 13 are mounted to cancel the blocking of the case 5 in the lock housing 2. In the illustrated embodiment, the transmission member 12 is a spring-loaded and rotatably mounted in the door lock housing 2 release lever 12 and the transmission member 13 to a spring-loaded and stored in the door lock housing 2 component that can interact with the release lever 12 in operative connection. The transmission member 13 is supported by the in FIG. 1 shown latch position on a locking surface 24 on a rear end face of the central part 5b.

The aforementioned components are the basic components of the embodiment of the door lock according to the invention. The other components and the function are described below:

Force transmission into the door lock via a pusher or via a nut

When opening the door, a force via a (not shown) door handle or a nut 15 is introduced into the door lock 1. The nut 15 is pressed in its normal position by a pusher retaining spring 18, wherein the nut 15 is held simultaneously in the basic position by a nut stop 25. The nut 15 in this case performs a clockwise rotation. Because the nut 15 is in contact with a driver 29 of the transmission member or slider 28, the transmission member 28 performs a vertical movement (in FIG. 1 to the top). By thus initiated movement of the transmission member 28, the locking of the second locking device 11 is released. Upon further rotation of the nut 15, the transmission member 28 is pushed further upwards. Due to the curve contour of the link 30, the spring-loaded latch 3 is simultaneously pulled into the door lock housing 2.

Just before the spring-loaded latch 3 is in the fully zurückgeschlossenen position (ie no longer can come into contact with the baffle plate or the striking plate 6), the latch 3 actuates the spring-loaded transmission member 12 in the form of the release lever. The transmission member 12 performs a directed counterclockwise rotational movement and thus actuates the transmission member 13, which in turn, as FIG. 2 shows, is pivoted about its pivot point in the housing 2 upwards and so a first locking device 10 is actuated.

In this state (see FIG. 2 ), the spring-loaded latch 5 can move into the door lock housing 2, while a spring-loaded additional latch 16 can extend out of the door lock housing 2 out. In this state, the door (not shown) can be opened and committed.

Once the latch 3 is in its retracted position, the spring-loaded auxiliary latch 16 engages behind a retainer 31, preferably in the form of a retaining lug of the transmission member 28, and holds the transmission member 28 in this position as well as the latch 3 is held in its retracted position. The door can now be committed, with the spring-loaded latch 5 can push into the door lock housing 2, whereas, how FIG. 2 shows, the spring-loaded additional case 16 can be moved out of the door lock housing 2. When closing the door, the case 5 hits the baffle plate 6 and is pressed into the door lock housing 2. Likewise, the additional trap 16 hits the baffle plate 6 and is also pressed into the lock housing 2. While the additional latch 16 is pressed into the door lock housing 2, this dissolves the blocking on the holding device 31, so that the transmission member 28 is released. By a locking spring 27, the transmission member 28 in its initial position and at the same time the bolt 3 in its fully excluded, in FIG. 1 moved visible position, wherein the first locking device 10 locks the latch 5 and then the second locking device 11 locks the latch 3. The door, which is not shown in the figures for simplicity, is thus closed and locked twice.

Force transmission into the door lock via a key or a lock bit

When opening the door, the force is introduced via a key or a cam 19 into the lock 1 in this mode. The cam 19 performs a clockwise rotation. By thus initiated movement of the cam 19, the transmission member 28 via a driver 32, which is preferably an integral part of the transmission member 28, moves upward.

By thus initiated movement of the transmission member 28, the locking of the second locking device 11 is released.

Upon further rotation of the cam 19, the transmission member 28 is pushed further upwards. Due to the curve contour of the link 30, the spring-loaded latch 3 is retracted at the same time.

With advanced rotation of the cam 19 this comes with a driver 33 of the bolt 3 in engagement. The bolt 3 is now pulled directly over the cam 19, wherein the transmission member 28, due to the gate 30, is pushed further upwards.

Just before the spring-loaded latch 3 is in the fully zurückgeschlossenen position (ie no longer can come into contact with the baffle plate 6), this actuates the spring-loaded transmission member 12. The transmission member 12 in turn performs a directed counterclockwise rotational movement and actuated Thus, the first locking device 10. By touching the first locking device 10 with the transmission member 12, the first locking device 10 performs a rotational movement in a clockwise direction and releases the blocking of the spring-loaded latch 5.

The door can now be committed, with the spring-loaded latch 5 moving into the door lock housing 2 and the spring-loaded additional latch 16 moving out of the door lock housing 2.

As soon as the latch 3 is in its retracted position, the spring-loaded additional latch 16 engages behind the holding device 31 and holds the transmission member 28 in this position. Likewise, the latch 3 is held in its retracted position.

The door can now be committed, with the spring-loaded latch 5 in the door lock housing 2 inside and the spring-loaded additional latch 16 can move out of the door lock housing 2.

Force transmission into the door lock via an electromechanical actuator

When opening the door, the force is introduced via the electromechanical actuator 4 or via the transmission member (actuator 7) in the door lock 1 and on the transmission member 28 via the driver 34. The transmission member 7 thereby performs a rotation in Clockwise and moves the transmission member 28 vertically upward.

By thus initiated movement of the transmission member 28, the locking of the second locking device 11 is released.

Upon further rotation of the transmission member 7, the transmission member 28 is further pushed upwards. Due to the curve contour of the link 30, the spring-loaded latch 3 is retracted at the same time.

Just before the spring-loaded latch 3 is in the fully zurückgeschlossenen position (ie no longer can come into contact with the baffle plate 6), this actuates the spring-loaded transmission member 12. The transmission member 12 in turn performs a directed counterclockwise rotational movement and actuated Thus, via the transmission member 13, the first locking device 10. By the operation of the transmission members 12 and 13 performs the first locking device 10 in turn a rotary movement in a clockwise direction and releases the blocking of the spring-loaded latch 5.

The door can now be committed, with the spring-loaded latch 5 moved into the door lock housing 2 and the spring-loaded additional latch 16 from the door lock housing.

As soon as the latch 3 is in its retracted position, the spring-loaded additional latch 16 engages behind the holding device 31 and holds the transmission member 28 in this position. Likewise, the latch 3 is held in its retracted position, so that the door can now be committed.

The abovementioned operations result from a synopsis of FIGS. 1 and 2 ,

Below is an example based on the Figures 3 and 4 to clarify the understanding of the invention. This example described below does not include any embodiment of the invention. With regard to all matching components and functions, reference may be made to the preceding description.

Accordingly, the differences are described on the basis of the following functional description using the example of different force entries into the door lock 1:

Force transmission into the door lock via the handle or over the nut

When opening the door, the force on the door handle or the nut 15 is introduced into the lock 1. The nut 15 performs a clockwise rotation. By a driver 20 on the nut 15 and a transmission member or Nussmittenteil 14 performs this rotation with.

Due to the fact that the nut central part 14 is in contact with the carrier 29 of the transmission member or slide 28, this carries out a vertical upward movement.

By thus initiated movement of the transmission member 28, the locking of the second locking device 11 is released.

Upon further rotation of the nut 15, the transmission member 28 is pushed further upwards. Due to the curve contour of the link 30, the spring-loaded latch 3 is retracted at the same time.

Just before the spring-loaded latch 3 is in the fully retracted position, a follower 35 of the nut center 14 actuates the first tumbler 10 on a pin 36 disposed on a trigger portion of the tumbler 10 corresponding to the link 13 of the first embodiment. This is accordingly mounted rotatably and spring loaded in the lock housing 2 and is located with its locking surface 24 on the rear end face of the central part 5b in the locked position.

By touching the first locking device 10 with the driver 35 of the transmission member 14, the first locking device 10 performs a rotational movement in a clockwise direction and releases the blocking of the spring-loaded latch 5.

The door can now be committed, with the spring-loaded latch 5 moving into the door lock housing 2 and the spring-loaded additional latch 16 moving out of the door lock housing 2.

As soon as the latch 3 is in its retracted position, the spring-loaded additional latch 16 engages behind the holding device 31 and holds the transmission member 28 in this position. Likewise, the latch 3 is held in its retracted position.

When closing the door, the case 5 hits the baffle plate 6 and is pressed into the door lock housing 2.

Likewise, the additional trap 16 hits the baffle plate 6 and is pressed into the door lock housing 2.

While the additional latch 16 is pressed into the door lock housing 2, this releases the lock on the holding device 31, and the transmission member 28 is released.

By the locking spring 27, the transmission member 28 are moved to its initial position and at the same time the bolt 3 in its fully excluded position, wherein the first locking device 10 locks the latch 5 and then the second locking device 11 locks the latch 3.

By a positive guidance of the driver 29 of the transmission member 28 in a gate 37 of the transmission member 14 and the transmission member 14 is brought back into its original position. The door is thus closed and locked twice.

Force application discloses the door lock on the key-side closing

When opening the door, the force is introduced via the key or the cam 19 into the door lock 1. The cam 19 performs a clockwise rotation.

By thus initiated movement of the cam 19, the transmission member 28 is moved via the driver 32 vertically upwards. By thus initiated movement of the transmission member 28, the locking of the second locking device 11 is released.

Upon further rotation of the cam 19, the transmission member 28 is pushed further upwards. Due to the curve contour of the link 30, the spring-loaded latch 3 is retracted at the same time. With advanced rotation of the cam 19 this comes with the driver 33 of the bolt 3 in engagement. The bolt 3 is now pulled directly over the cam 19, wherein the transmission member 28, due to the gate 30, is pushed further upwards.

Due to the positive sliding guide 37 of the transmission member 14 with the driver 29 of the transmission member 28 and the transmission member 14 also carries out a clockwise movement with.

Shortly before the spring-loaded latch 3 is in the fully zurückgeschlossenen position, the driver 35 of the transmission member 14 actuates the first locking device 10 on the pin 36th

By touching the first locking device 10 with the driver 35 of the transmission member 14, the first locking device 10 performs a rotational movement in a clockwise direction and releases the blocking of the spring-loaded latch 5.

The door can now be committed, with the spring-loaded latch 5 moved into the door lock housing 2 and the spring-loaded additional latch 16 from the door lock housing 2.

As soon as the latch 3 is in its retracted position, the spring-loaded additional latch 16 engages behind the holding device 31 and holds the transmission member 28 in this position. Likewise, the latch 3 is held in its retracted position.

Force transmission into the door lock via the electromechanical actuator

When opening the door, the force is introduced via the electromechanical actuator 4 or via the transmission member 7 in the door lock 1 and on the transmission member 28 via the driver 34.

The transmission member 7 in this case performs a clockwise rotation and moves the transmission member 28 vertically upward. By thus initiated movement of the transmission member 28, the locking of the second locking device 11 is released.

Upon further rotation of the transmission member 7, the transmission member 28 is further pushed upwards. Due to the curve contour of the link 30, the spring-loaded latch 3 is retracted at the same time.

By the leadership of the driver 29 in the gate 37 and the transmission member 14 in the clockwise direction performs a movement with.

Shortly before the spring-loaded latch 3 is in the fully zurückgeschlossenen position, the driver 35 of the transmission member 14 actuates the first locking device 10 on the pin 36th

By touching the first locking device 10 with the driver 35 of the transmission member 14, the first locking device 10 performs a rotational movement in a clockwise direction and releases the blocking of the spring-loaded latch 5.

The door can now be committed, with the spring-loaded latch 5 extending into the door lock housing 2 and the spring-loaded additional latch 16 protruding from the door lock housing.

As soon as the latch 3 is in the retracted position, the spring-loaded additional latch 16 engages behind the holding device 31 and holds the transmission member 28 in this position. Likewise, the latch 3 is held in its retracted position.

In the FIGS. 5 to 7 a variant of an actuator according to the invention for the first locking device 10 is shown.

Instead of the release lever 12 here is a chain of transfer members 38, 39 and 40 is provided, whose function corresponds approximately to a parallel arm. The transmission members or transmission levers 38, 39 and 40 are in each case rotatably in the in the FIGS. 5 to 7 (not shown) housed housing 2, wherein the pivot points in FIG. 5 denoted by D1 and D2. The pivot point D1 is located approximately in the middle of the lever 38, while the pivot point D2 is located at the free end of the lever 40.

The levers 38, 39 and 40 are rotatably attached to each other.

The transmission levers 38, 39 and 40 are also actuated by the latch 3. This is in the FIGS. 5 to 7 symbolized by the arrows.

After a movement of the bolt 3 from the position in FIG. 5 in the position of FIG. 6 begins a movement of the lever 38 in the arrow direction, whereby the lever 39 is moved approximately vertically upwards.

FIG. 6 This shows the moment in which the transmission lever 40, the locking of the first locking device 10 begins to pick up.

FIG. 7 shows the previously explained arrangement in the unlocked position of the first locking device 10. The bolt 3 is in this case in its zurückgeschlossenen position and has thereby caused the unlocking movement of the lever 38 to 40. The locking device has been pivoted against the spring force acting on it in a clockwise direction upwards.

In this position, the door can now be committed.

LIST OF REFERENCE NUMBERS

1

electromechanical door lock

2

Door lock housing / lock box

3

bars

3a

Cones of 3

4

electrical / electromechanical actuator

5

spring-loaded trap

5a

wedge-shaped part

5b

movable central part

6

Flapper / keeper

7

Transmission element / actuator

7a

Tenon of 7

8th

recess

9

recess

10

first locking device (for the trap)

11

second locking device (for the bolt)

12

Transmission member / release lever

13

Transmission element / locking lever

14

Transmission member / walnut middle part

15

nut

16

additional case

18

Oppressors high retaining spring

19

Cam

20

takeaway

24

blocking surface

25

Nuss stop

27

latch spring

28

Transmission member / slider / actuating lever

29

takeaway

30

scenery

31

holder

32

takeaway

33

takeaway

34

takeaway

35

takeaway

36

spigot

37

Link / link guide

38

transmission member

39

transmission member

40

transmission member

D1

pivot point

D2

pivot point

Claims (5)

1. An electro-mechanical door lock (1);

   - with a door lock housing (2);

   - with a blocking dead-bolt (3), which is lockable in the door lock housing (2) in a projecting position and is retractable back into the door lock housing (2) by means of an electrical actuation device (4);

   - with a spring-loaded latch-bolt (5) for centring the dead-bolt (3) in its dead-bolt locking position in an opening of an impact plate (6), the latch-bolt (5) having a central part (5b), which is movable inside the door lock housing (2), and a wedge-shaped part (5a), which, in a projecting position of the latch-bolt (5), is at least partially protruding from the door lock housing (2), and wherein the wedge-shaped part (5a) is connected to the central part (5b) to allow for a pivotable movement of the wedge-shaped part (5a) in relation to the central part (5b), such that the latch-bolt (5) can be pressed into the inside of door lock housing (2), if a force acts upon the wedge-shaped part (5a) from one side of the door lock housing (2) or from another side thereof in the direction of opening or closing of a door equipped with the door lock (1);

   - with first transmission members (7, 28) for transmitting a force from the electrical actuation device (4) to the dead-bolt (3);

   - with at first keeper device (10) for locking the latch-bolt (5) in the projecting position thereof, while the dead-bolt (3) is in the dead-bolt locking position, and

   - with an actuating member (28), which is at least partially movable essentially in the longitudinal direction of the door lock housing (2) and is part of the first transmission members (7, 28), which has a second keeper device (11) for the dead-bolt (3) in its dead-bold locking position, and which, upon movement in a direction along the longitudinal axis of the door lock housing (2), releases the blocking of the dead-bolt (3), characterized in that

   - the dead-bolt (3), when being retracted into the inside of the door lock housing (2), can be brought into operational connection with secondary transmission members (12, 13; 38, 39, 40) for releasing the blocking of the latch-bolt (5), wherein

   - one of the secondary transmission members (12, 13; 38, 39, 40) is composed of a spring-loaded blocking lever (13), which is rotatably supported in the door lock housing (2), and

   - upon retracting the dead-bolt (3) into the door lock housing (2), another one of the secondary transmission members (12, 13; 38, 39, 40) reaches engagement with the blocking lever (13) and the blocking lever (13) is pivoted into an unblocking position, in which the blocking of the latch-bolt (5) is cancelled.
2. A door lock according to claim 1, characterized in that the at least one secondary transmission member (12, 13; 38, 39, 40) comprises a spring-loaded release lever (12) which is rotatably supported in the door lock housing (2), wherein the dead-bolt (3), when being retracted into the door lock housing (2), reaches engagement with the release lever (12) and brings the blocking lever (13) into the unblocking position by means of pivoting the release lever (12).
3. A door lock according to claim 1, characterized in that the at least one secondary transmission member (12, 13; 38, 39, 40) has a series of transmission levers (38 to 40), which are configured according to a parallel arm assembly.
4. A door lock according to claim 3, characterized in that a first transmission lever (38) is rotatably supported in the door lock housing (2) approximately in the centre with regard to a longitudinal extension of the first transmission lever (38) and pivotally connected to one secondary transmission lever (39), which is pivotally connected to a third transmission lever (40) which is rotatably supported in the door lock housing (2).
5. A door lock according to one of the claims 1 to 4, characterized in that the second keeper device (11) has a coulisse (30) with holding recesses (8, 9) at terminal sides, which are disposed in the first transmission member (28) and cooperate with a finger (3a) of the dead-bolt (3).

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