Classifications

• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B77/00—Vehicle locks characterised by special functions or purposes
  • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
  • E05B77/12—Automatic locking or unlocking at the moment of collision
• • E—FIXED CONSTRUCTIONS
  • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
  • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
  • E05B81/00—Power-actuated vehicle locks
  • E05B81/12—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators
  • E05B81/14—Power-actuated vehicle locks characterised by the function or purpose of the powered actuators operating on bolt detents, e.g. for unlatching the bolt

Definitions

• the invention relates to a motor vehicle door lock, with a locking mechanism made of a rotary latch and pawl, furthermore with at least one actuating lever, for. B. external actuation lever, which carries out an idle stroke with respect to the locking mechanism in the closed state of the motor vehicle door lock, and with an electric drive for the locking mechanism, the electrical drive mechanism for an electrical opening of the locking mechanism, and wherein for emergency opening of the locking mechanism a mechanical connection between the operating lever and the locking mechanism can be set up.
• a motor can be acted upon by a control unit in connection with a disc as a clutch, which has an effective connection in one position. binding with a lock cylinder and in another position does not establish an operative connection.
• the procedure is such that the outer door handle, lock cylinder, door lock and a mechanical function chain are provided between the lock cylinder and the door lock, the lock cylinder and the mechanical function chain being connected to one another via an electromagnetic clutch.
• a dynamo that can be activated by the handle movements of the outer door handle in conjunction with an energy store ensures that the electromagnetic clutch is engaged without a battery and in order to achieve sufficient security against theft only after a positive check of an electrical monitoring system (see DE 197 24 085 Cl ).
• the invention is based on the technical problem of further developing a motor vehicle door lock of the design described at the outset in such a way that reliable operation is ensured with a simple and inexpensive construction.
• the invention proposes in a generic Kra tGermantrastuß that the electric drive not only acts on the locking mechanism for electrical opening, but also couples the actuating lever in the event of an emergency opening with the pawl and / or the catch.
• the electric drive controls an intermediate lever into a position coupling the actuating lever with the pawl to represent an actuating stroke of the actuating lever when the locking mechanism is in the closed position.
• the intermediate lever can also basically couple the rotary latch in its closed position in the course of an emergency opening with the actuating lever - controlled by the electric drive for the locking mechanism.
• a connection is made from the operating lever to the pawl via the intermediate lever.
• a release lever is usually also implemented, the intermediate lever being arranged between the release lever interacting with the actuating lever and the pawl.
• the electric drive regularly has an output shaft with a worm wheel, which engages in an output disk.
• This driven pulley is equipped with at least one control pin which follows the rotary movements of the driven pulley initiated by the electric drive or the associated electric motor.
• the control pin is able to act on the pawl to trigger the rotary latch in one direction of rotation of the driven disk and to control the intermediate lever for coupling the release lever and pawl in the other direction of rotation of the driven disk.
• the intermediate lever is equipped with a cross arm which is acted upon by this control pin on the driven pulley of the electric drive.
• the intermediate lever advantageously has a through pin, with the aid of which the release lever and pawl are coupled to one another. This through pin engages on the one hand in an extension of the locking link with preferably an L-shaped slot guide, and on the other hand in a likewise preferably L-shaped slot guide in the release lever.
• the emergency opening operation of the locking mechanism is regularly made dependent on the signal from a sensor.
• This sensor can be an airbag sensor.
• the invention is based on the knowledge that even in the event of an accident, the corresponding signal from the airbag sensor is sufficient to rotate the driven disk of the electric drive in such a way that the intermediate lever can then couple the release lever and pawl ,
• the intermediate lever is in a position that mechanically connects the actuating lever to the locking mechanism and here in particular the pawl. This ensures that, for example, an outside door handle connected to the actuating lever no longer performs an idle stroke, even when the locking mechanism is in the closed position. Rather, the outer door handle is able to open the locking mechanism in the course of an actuation stroke, which can be life-saving, in particular for persons who may be inside the vehicle and may be injured. Because assistants the door can be opened easily from the outside, even if it was previously locked while driving.
• the invention naturally also opens up the option of using a voltage or energy sensor as the sensor, which largely monitors a vehicle battery. If the charge state or the available voltage fall below a certain value here, a corresponding sensor signal can be evaluated and interpreted by a control device in such a way that it opens up the possibility of being able to open a motor vehicle door from the outside.
• the corresponding sensor signal of the energy or voltage sensor ensures that the electric drive enables an emergency opening by coupling the actuating lever (and thus the outer door handle mostly connected to it) with the locking mechanism.
• the intermediate lever can be moved additionally or alternatively with the aid of a locking cylinder or a comparable mechanical adjusting device into the position that couples the release lever with the pawl.
• the electric drive usually does not ensure the transition of the intermediate lever into the coupling position described, rather this is accomplished with the help of the lock cylinder or a comparable mechanical adjusting device.
• La and b show an exploded view of the essential components of the invention of the described motor vehicle door lock in two different configurations
• FIG. 2 shows the motor vehicle door lock according to FIG. 1b in the assembled state, specifically in the closed position of the locking mechanism
• FIG. 3 shows the object according to FIG. 2 after an electrical opening process
• Fig. 5 shows the open locking mechanism after an emergency opening.
• a motor vehicle door lock which is equipped with a locking mechanism 1, 2 consisting of a rotary latch 1 and pawl 2.
• a locking mechanism 1, 2 consisting of a rotary latch 1 and pawl 2.
• an actuating lever 3 according to the exemplary embodiment an external actuating lever 3, which is mechanically operatively connected to an external door handle.
• This actuating lever 3 strikes against a cantilever 5 of a release lever 6 during rotational movements about its axis 4 (cf. FIG. 5).
• Corresponding pivoting movements of the actuating lever 3 lead when the locking mechanism is in the closed position (cf. FIG. 2). to the fact that the trigger lever 6 and thus also the actuating lever 3 and the outer door handle connected thereto perform an idle stroke.
• this inner actuation lever which is not expressly shown, is able to turn the pawl 2 in the figures clockwise about its axis 8, so that the catch 1 rotates in a spring-assisted manner about its axis 9 and also rotates clockwise in FIG. 5 is transferred by an arrow indicated opening position.
• the locking link 2 can be opened not only with the help of the inner operating lever, but also electrically. This is ensured by an electric drive 10, 11, 12, 13.
• This electric drive 10, 11, 12, 13 in the context of the exemplary embodiment consists of an electric motor 10, an output shaft 11 rotatably driven by the latter, a worm wheel 12 on the output shaft 11 and an output disk 13 meshing with the worm wheel 12.
• This output disk 13 is capable of rotating movements in a clockwise and counterclockwise direction.
• a driven cam 14 located below the driven pulley 13 provides a connection with a cam counterpart 15 on the pawl 2 for the pawl 2 to make a clockwise movement about its axis 8, so that - as in the mechanical opening described, by means of the internal actuating lever acting on the extension arm 7 - the catch 1 is released spring-assisted.
• This process can be understood by comparing FIGS. 2 and 3. Corresponding arrow entries ensure that the movements of the individual components of the motor vehicle door lock become clear.
• the relevant electrical drive 10, 11, 12, 13 is also and additionally capable of opening the emergency Locks 1, 2 can take care of.
• the locking mechanism 1, 2 is mechanically connected to the actuating lever 3 and thus, of course, to the outside door handle, so that it now no longer performs an idle stroke.
• This emergency opening of the locking mechanism 1, 2 is achieved by the fact that the driven pulley 13 executes a clockwise movement this time (in contrast to the electrical opening, where the driven pulley 13 is moved in the counterclockwise direction).
• the intermediate lever 19 is arranged between the release lever 6 and the pawl 2.
• the intermediate lever 19 can also be located in front of the release lever 6, as shown in FIG. 1b.
• this sensor is the airbag sensor, the signals of which are evaluated by a control device (also not shown) and processed to control the electric drive 10, 11, 12, 13.
• the invention opens up the possibility of using any sensor signals for the described adjustment of the driven pulley 13 in a clockwise direction so that the emergency opening is successful.

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• Lock And Its Accessories (AREA)

Applications Claiming Priority (3)

Publications (2)

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ID=7658373

Family Applications (1)

Country Status (6)

Cited By (3)

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• 2000
  • 2000-09-30 DE DE10048709A patent/DE10048709A1/de not_active Withdrawn
• 2001
  • 2001-09-25 WO PCT/EP2001/011067 patent/WO2002031298A1/fr active IP Right Grant
  • 2001-09-25 DE DE50108196T patent/DE50108196D1/de not_active Expired - Lifetime
  • 2001-09-25 EP EP01974293A patent/EP1320652B1/fr not_active Expired - Lifetime
  • 2001-09-25 JP JP2002534653A patent/JP2004511687A/ja not_active Withdrawn
  • 2001-09-25 AU AU2001293844A patent/AU2001293844A1/en not_active Abandoned
  • 2001-09-25 AT AT01974293T patent/ATE310878T1/de not_active IP Right Cessation

Non-Patent Citations (1)

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