JPH01239278A - Locking device for door lock of automobile - Google Patents

Abstract

PURPOSE: To prevent unlocking from the inside by joining an inner handle to a door lock via a joint removable from the outside by an operation driving device at locking time. CONSTITUTION: An outer security element 2 in the shape of a lock cylinder, a first inner security element 3 and a remote controllable security element 4 in the shape of a central locking control element are connected to a separating joint 6 by a mechanical connecting body 5. The separating joint 6 is arranged between a door lock 1 and an outer handle grip 7, the joint 6 is operated by the security elements 2, 3, 4, and the handle 7 is lockably arranged by separating from the lock 1. The connecting body 5 is moved in the arrow A direction by the security elements 2, 4 to release a locking state. The security element 3 is kinematically decoupled with the connecting body 5 by arrow A directional manual operation by a loosely connecting body 8 to which pre-stress is elastically imparted so that release of the locking state by the security element 3 is made impossible.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a locking device for an automobile door lock.

[Prior Art] A locking device according to the generic concept is known (German Patent Application No. 35 00 550), but it is disclosed in this publication that it can be operated by means of a joint (remotely controlled but not mechanically operated). It has already been mentioned that the internal handle can be separated from the door lock. However, in that case the joint would need to be the same separation joint that separates the external handle from the door lock when locked. In that case, the locked state can always be locked and unlocked by the internal safety element, which determines whether the door lock is locked from the inside or from the outside or the remote side ii1 ( locked by central remote control). moreover,
The locked state can also be released by a simple operation of the internal handle that cannot be removed during the process of opening the door from the inside.

In addition, door locks (West German Patent Application Publication No. 20009)
44, West German Patent Application No. 25 22 301), in which the external and internal handles are always free, regardless of whether they are locked from the outside or from the inside. , i.e. separated from the door lock, but if it is locked from the outside, the internal safety element is restrained, and if it is locked from the inside, the internal safety element is locked by the door lock itself. It can be canceled again.

In the case of this last-mentioned design, it is not possible, as in the case of the locking device forming the general concept, to arrange internal safety elements that are buried in the locking condition and cannot be grasped by hand;
To open a locked door from the inside, two grips must always be provided.

[Problem to be Solved by the Invention] The object of the invention is to construct the locking device according to the generic concept in such a way that it is sufficiently protected against being illegally opened from the inside by intrusion.

[Means for solving the problem] According to the invention, this object is achieved by providing a side suction according to the characterizing part of claim 1 for a locking device without a special external safety element (lock cylinder). achieved by In that case, it is provided that the external locking is carried out by remote control and can be controlled by the locking of the other doors, for example using the safety or control elements of the central locking device.

The features of the other claims make the locking device according to the invention even more advantageous and enable it to be used effectively in door locks, in particular with external safety elements and/or child safety devices. Disclosed. In this case, a child safety device refers to a well-known option that must be able to prevent inadvertent opening of the door from the inside, but that the door cannot be opened from the outside. Must be kept from being locked.

A combined central locking device and theft protection device (DE 33 07 542) is already known, with which it is possible to illegally open the door from the outside using external forces after locking. This is prevented by an additional detent engaged with the rotating latch bolt.

Furthermore, it is known to prevent unlocking of the door lock by means of an internal safety element, by preventing further movement of the locking means by the idle stroke of the internal safety element (
West German Patent Application Nos. 2709157 and 27
091511 specification), however, this countermeasure is
Its effect can only be achieved reliably if the integrated vacuum control element is operated continuously.

Finally, in the combined central locking device and intrusion theft alarm device, if the key identification signal of the lock cylinder switch is present at the same time, the control device of the intrusion theft alarm device
Similarly to the control of the central locking device, it is known to control it by means of the same potential change switch (DE 35 16 732).

Two different options are provided by the locking device according to the invention to prevent illegal use of the internal safety element in the direction of the unlocking operation.

EXAMPLES A more detailed explanation will be given by the examples shown in the figures and the detailed description below.

The locking device of the door lock l comprises, on the one hand, an external safety element 2 in the form of a lock cylinder and a first internal safety element 3;
and a remotely controllable safety element 4 in the form of a central locking control element. These three safety elements 2.3 and 4 act on a separation joint 6 by means of a mechanical coupling 5, which separation joint 6 is provided between the door lock l and the external handle 7 and is connected to the external handle. 7 to door lock 1
It can be removed by means of safety elements 2.3 and 4 in order to be separated from and therefore locked. Unlocking, carried out by moving the coupling body 5 in the direction of the arrow A, is initially possible only with the safety elements 2 and 4. The first internal safety element 3 is kinematically decoupled from the coupling 5 against manual manipulation in this direction by a resiliently prestressed play coupling 8 . This spring serves only to reliably drive the first internal safety element 3, which is designed, for example, as an internal safety knob, even in the case of remote control, in order to indicate the locked state. This spring is
The first internal safety element 3 is so weak that it cannot be released from the locked state.

On the other hand, the second internal safety element 9 is connected via the first releasable joint 10 with the separation joint 6 for operating it, and finally the internal handle 11 is connected to the second releasable joint 10. It is connected to a door lock l via a joint 12. In this case, the respective devices that serve to hold the vehicle door in the closed position are collectively referred to as door locks.

In particular, a common combination consisting of, for example, a rotating latch bolt and a detent can constitute a "door lock", in which case the handle for opening the door acts on the detent. Both releasable joints 10 or 12 are provided with a respective one for operating them in the direction of removal and in the direction of insertion.
Two operating drive elements 13 or 14 are provided. Unlike this, both joints basically need to be removed and inserted at the same time, so both joints 10.12
In a suitable construction of the locking device, a common actuating drive element 15 can also be provided, as shown in broken lines.

Separation joints 6.10 and 12, indicated only symbolically with interrupted force transmission arrows, are connected in the direction of the symbolic action arrow pointing at right angles to the force transmission arrow (e.g. pointing to the interlocking rod, adjusting element). operated by a safety element or operating drive element connected to the

A signal evaluation circuit 1G is provided to control the drive elements 13 and 14 or 15, which can only be activated from the outside in the locked position. This circuit receives, on the one hand, a potential change signal input from an electrical changeover switch 17 which is mechanically coupled to the central locking control element 4 and which leads, for example, to a locking position with a negative potential and to a release position with a positive potential. Ru. On the other hand, an adapted key (not shown) is attached to the external safety element 2 for locking or unlocking.
When used, a key identification signal is input to the signal evaluation circuit 16 from an electrical key identification device 18. This behavior is indicated by the dashed double line.

Only by means of the potential change signal that occurs when operating the first internal safety element 3, for example in the direction opposite to the direction of the arrow A, the signal evaluation circuit 1G can cause the central locking device containing the control element 4 to -
It is controlled by the system shown by the dotted chain line. Furthermore, in the presence of the key identification signal from the device I8, the operating drive elements 13 and 14 (or 15) are likewise driven by the signal evaluation circuit 16 in accordance with the simultaneously present potential change signal from the switch 17. .

Therefore, when a locked state is formed by the key in the external safety element 2, a) the central locking device is controlled in the locking direction based on the potential change from positive to negative of the switch 17, and the separation joint 6 is separated; b) if1 of the signal between the positive-negative potential change and the key identification signal;
Based on the alignment, the joints 10 and 12 are released by the actuating drive elements 13 and 14 or by the common actuating drive element I5.

Therefore, it is not possible for an outsider to release the lock by any handle or safety element without using force.

FIG. 2 shows a locking snowmaker 20 with no external safety elements and a child safety device 20 for a rear door lock l.
This child safety device j420 is assembled 111 with a lever handle 21 and a joint 22 that can be removed by hand using a known method. The girded safety device 20 is mechanically connected in series in the direction of force flow of the already mentioned releasable joint 12 and the internal handle 11 and can be operated completely independently. In other respects, the apparatus shown in FIG. 2 is substantially the same as the apparatus shown in FIG. 1, and like components are designated by like reference numerals.

In FIG. 2 the second internal safety element has been omitted.

The first internal safety element 3 and the second internal safety element 9 of FIG. 1 are structurally designed in such a way that they can both be separated from the actuating device of the separation joint 6 by the same releasable joint 10. You can also do it. This is connected by the broken line 2
3 shows. If this connection 23 is provided, the play connection 8 of the first internal safety element 3 to the connection 5 is omitted.

In that case, as described above, the first internal safety element can be used simply as a means of indicating the locked state, but the second internal safety element 9 is a manually operable slide that is not visible from the outside. For example, it can be installed inside the door.

Finally, it is self-evident that a mechanically acting device, not shown, can be provided, with which the separating joint of the external handle necessarily re-engages when the door is opened by releasing the lock from the inside. This device can be advantageously controlled, for example, by the action of a rotating latch bolt.

It is self-evident that the receiver of the infrared remote control device can be considered as an external safety element, which transmitter corresponds functionally to a key that fits into the lock cylinder.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing one embodiment of the invention, and FIG. 2 is a circuit diagram showing another embodiment of the invention. 1... Door rotor, 2... External safety element, 4...
Central lock control element, 6... Separation joint, 8... Play connection body, 9... Internal safety element, 10... Joint (connection body), 11... Internal handle, 12... joint, 1
3.14.15... Operation driving element, 17... Switch, 18... Key identification device, 20... Child safety device.

Claims (8)

[Claims] (1) at least one external handle of the door lock has a locking position that can be disconnected from the door lock by a separation joint operated by the safety element and locked by the safety element remotely or from a central station; , the door lock can be tripped in the process of opening the respective door after being manually locked at least in the locking position by an internal safety element connected to the separation joint via a coupling which operates the separation joint at least in the decoupling direction. In a car door lock locking device that can be released from a locked state by an internal handle connected to the door, when the door is locked in a locked state, the operation drive device (14; 15) indirectly releases the door from the outside. The internal handle (11) is connected to the door lock (1) via another joint (12) that can be connected between the internal safety element (3, 9) and the separating joint (6).
The coupling device (8, 10) is connected to at least the internal safety element (3).
, 9) A door lock locking device for an automobile, characterized in that it can be decoupled in the direction of the unlocking operation. (2) The internal safety element (9) provided for locking the locked state and releasing the locked state is indirectly released from the outside by the operation drive device (13; 15) when the locked state is locked. Claim 1 characterized in that the separation joint (6) is connected to the separation joint (6) via a second joint (10) capable of
Locking device as described. 3. Locking device according to claim 2, characterized in that a common operating drive (15) is provided for synchronously operating the two releasable joints (10 and 12). (4) The internal safety element (3), which is provided only for locking the locking device, connects the separating joint via a play connection (8) which is permanently free against manual operation in the unlocking direction. (6)
The locking device according to claim 1, characterized in that it is coupled with. (5) the external safety element (2) is provided with an electrical key identification device (18) for direct control of the respective separate tripping joint (10 and/or 12) operable by external force; 5. An external safety element according to any one of claims 1 to 4, characterized in that the external safety element is provided between the external handle and the door lock for operating at least the separation joint and is operable only by a key. Locking device. (6) the respective operating drive (13, 14, 15) of the releasable joint (10, 12) is mechanically coupled to the central locking control element (4) in the unlocked position and in the locked position; If the signals of the electrical key identification device (18) are simultaneously present by electrical switches (17) with different potentials, the electrical switch (17) is activated in a manner known per se.
provided between the external handle and the door lock for operating at least the separation joint, characterized in that it is controlled via a signal evaluation circuit (16) by a change in the potential of 6. Locking device according to claim 5, comprising a central locking control element movable into a locked position and an unlocked position. (7) Detachable joint (12) of internal handle (11)
Locking device according to claim 1 or 5, characterized in that the locking device (20) is provided mechanically in series with the child safety device (20). 8. Locking device according to claim 4, characterized in that the play connection (8) of the internal safety element (3) is prestressed by a separating joint (6) and a spring force.