FR2559828A1 - MOTOR VEHICLE DOOR LOCK OF THE PIVOTING LATCH TYPE, WITH PRELIMINARY AND MAIN STOP SHAFT AND DEVICE FOR CONTROLLING AN ELECTRIC MOTOR - Google Patents

Abstract

THIS LOCK INCLUDES A SWIVEL LATCH 2 ACTIVATED BY A CLOSING BOLT 1 SECURING THE VEHICLE, A STOP RATCHET 3, AN OPERATION LEVER 4 FOR THE STOP RATCHET AND A DEVICE WITH AN ELECTRIC MOTOR AND CONTROL CAM 5 TO CONTROL THE SWIVEL LATCH AND LEVER TO OPERATE BETWEEN THE "LOCK OPEN" AND "LOCK CLOSED" POSITIONS. IT HAS A PRELIMINARY STOP AND A MAIN STOP. THE ELECTRIC MOTOR CONTROL DEVICE INCLUDES A CONTROL SWITCH INSIDE THE MOTOR VEHICLE AND OR IN THE DOOR AS WELL AS LIMIT SWITCHES 9, 10 INCORPORATED IN THE LOCK, KNOWING A 9 FOR THE "ENGINE START" POSITION "AND ANOTHER 10 FOR THE" ENGINE STOP "POSITION, AT LEAST ONE OF THE LIMIT SWITCHES THAT CAN BE ACTUATED DEPENDING ON THE POSITION OF THE SWIVEL LATCH.

Description

The invention relates to a door lock of a motor vehicle

  equipped with a preliminary detent and a main detent with pivoting latch actuated by a closing bolt, ratchet, operating lever for the ratchet and control device with electric motor

  and radial cam for control by electric motor

  the pivoting latch as well as for an electric motor control of the operating lever between the "open door lock" and "closed door lock" positions,

  the device for the control by electric motor comprises

  a control switch inside the motor vehicle and / or in one of the doors as well as limit switches incorporated in the lock, namely one for the position "Starting the engine" and the another for the "Engine stop" position, and at least one of the limit switches that can be operated depending on the position of the pivoting latch. Locks

  motor vehicle doors of this kind are used

  especially for motor vehicle lifts.

  In the motor vehicle door lock of the aforementioned kind well known in the art, the limit switch for the "Starting the engine" position is connected directly to the pivoting latch and is therefore actuated directly by said latch. The arrangement is then chosen so that most of the path of the pivoting latch is controlled via the electric motor. Accordingly, this limit switch is immediately behind the preliminary stop position of the door lock of the motor vehicle. This is not without drawbacks. There is a risk that by slamming the door or door slightly

  tailgate equipped with the described door lock, this

  limit switch is struck but the door or tailgate bounces so that the pawl does not reach the latch and the door or tailgate opens again when the door lock of the door

  motor vehicle is fully electrically closed.

  The object of the present invention is to improve a motor vehicle door lock of the aforementioned type so that a lock of the lock of

  motor vehicle door controlled by electric motor

  can not occur when the door or

  Tailgate is closed sharply but bounces.

  According to the invention, this object is achieved by the fact that in the region of the radial cam is disposed a control lever with two arms loaded by a spring and rotatable about an axis parallel to the axis of the pivoting latch, which control lever is on the one hand applied with a control cam against control elements of the pivoting latch and actuates, on the other hand, the operating lever, that, in addition, a stop lever loaded by a spring is provided to permit the locking of the operating lever when it is brought into the open position while the pivoting latch is held in place, the stop lever being controllable, via an arm of stop lever control, by a pivoting latch element in the direction of release of the operating lever, and that, in addition, the limit switch for the "Starting the engine" position can be controlled by the control lever, while the switch limit switch for the "Engine stop" position can be

actuated by the control cam.

  The description that follows, next to the drawings

  annexed by way of non-limiting examples, will

  understand how the invention can be put into practice.

  FIG. 1 schematically represents a view of the essential elements of a vehicle door lock.

automobile according to the invention.

  Figure 2 schematically represents a view of

side of the object of Figure 1.

  Figure 3 schematically represents the object of

  Figure 1 in a different functional position.

  Figure 4 schematically represents the object of

  Figure 1 in another functional position.

  The motor vehicle door lock shown in the drawings basically consists of a pivoting latch 2 actuated by a closing bolt 1 secured to the vehicle, a pawl 3, a leyier maneuver 4 for the ratchet 3 and a device with electric motor and control cam 5 for the control

  motorized pivoting latch 2 and operating lever 4.

  The motor vehicle door lock is equipped with a preliminary detent and a main detent, the locking pawl 3 finding in V the preliminary stopper on the pivoting latch 2 and in H the main detent. It goes without saying that the elements mentioned are kept in a box or box 6. This box or box 6 has a recess 7 for the introduction of the bolt of

  closing 1 which, in the exemplary embodiment, is introduced

  from the bottom up in the direction of the arrow 8 indicated in Figure 1 because it is a door lock of a motor vehicle for a tailgate. The electric motor is not shown. It acts through a

  gear system on the control cam 5 mentioned.

  The operating lever 4 can be moved between the positions

  "lock open" and "lock closed". Figure 1 shows the position "lock closed", while Figure 3 indicates the position "" lock open ". Figure 4 shows a particular actuation phase that will be explained

further.

  The device for controlling the operating lever 4 by an electric motor comprises a control switch inside the motor vehicle or in one of the

  vehicle doors and is equipped with, in addition,

  limit switches 9, 10 incorporated in the door lock, namely a 9 for the position "Starting the

  motor "and another 10 for the" Engine stop "position.

  One of the limit switches 9, 10 can be actuated in the manner described below depending on the position of the pivoting latch 2. It goes without saying that the control by electric motor also requires a particular electrical circuit that allows the usual operation and described further from the control by electric motor. This is not described in detail since the present invention relates to a mechanical improvement of a

  motor vehicle door lock of this kind.

  In the region of the control cam 5 is disposed a two-arm control lever with a spring loaded and rotatable about an axis 13 parallel to the axis 12 of the pivoting latch. The control lever is applied with a control cam 11a against control elements 14 of the pivoting latch 2 and it acts, moreover, on the operating lever 4. In addition, the lock comprises a stop lever 16 loaded by a spring 15, which makes it possible to lock the operating lever 4 when it is pushed into the open position while the pivoting latch 2 is held in place. The stop lever 16 can be controlled, via a stop lever control arm 17, by an element 18 of the pivoting latch 2 in the direction of a release of the operating lever 4. Moreover, , the arrangement is chosen such that the limit switch 9 for the "Starting the engine" position can be operated by the control lever 11, while the limit switch 10 for the "Off" position

  of the motor "can be actuated by the control cam 5.

  Figures 1 and 2 show the pivoting latch 2 and the locking pawl 3 in the closed position. The control lever Il rests with its control cam ila on the control element 14 of the pivoting latch 2 made as a spoke. The control roller 19 of the limit switch 9 is in the raised position. In contrast, the limit switch 10 is applied with its control roller 20 against the control cam 5 and is actuated. This means that the electric motor is stopped. The stop lever 16 rests with its surface 16a on the pin 21 of the operating lever 4 which is located

in the rest position.

  In Figure 3, the door lock is open.

  With its operating surface 5a, the control cam 5 has brought the operating lever 4 onto the spindle 21 in the open position and this operating lever 4 releases, with its bend 22, the locking pawl 3 of the stop surface 2a of the pivoting latch 2. For this, the control switch inside the motor vehicle has been actuated adequately. If, for example in the case of a tailgate, the pivoting latch 2 remains in the closed position, for example because the tailgate is adhered by the gel on the rubber seal, the stop lever 16 urged by its spring falls behind pin 21 of the lever of

  maneuver. It memorizes, as it were, the opening position

  4. When the pivoting latch 2 is then brought into the open position, for example because the tailgate is raised, the element 18 of the pivoting latch 2 is shaped in accordance with FIGS. as reported spindle pushes the stop lever 16 by the surface 16b out of the lock function and the lever

  maneuver 4 returns to its rest position. In posi-

  waiting, the pawl 3 rests on the curve

2b swivel latch 2.

  An examination of Figure 4 leads to the following results: When the pivoting latch 2 is pushed in the direction of the closed position, the curve lb of the control lever 11 slides on the curve 2b of the pivoting latch 2 until the control lever it falls on the curve the. The surface Ilc locks the pivoting latch 2 on the surface 2c and the pawl 3 can engage in the preliminary stopper V of the pivoting latch 2. At the same time, the roller 19 of the end switch of race 9 can go down and the switch 9 is actuated. It causes the electric motor to start. With its surface 5a, the control cam 5 pushes the pivoting latch 2 on the control element 14 shaped as an inserted pin into the complete closed position, and the pawl 3 engages in the detent main switch 2 of the pivoting latch 2. The limit switch 10 then stops the electric motor via the operating flank 5b of the control cam 5. The disengaging lever 25 is

  mechanical emergency operation.

Claims (1)

CLAIM   Motor vehicle door lock equipped with a preliminary stop and a main detent, with pivoting latch actuated by a closing bolt, ratchet, operating lever for the ratchet and device with electric motor and cam radial for an electric motor control of the pivoting latch and for an electric motor control of the operating lever between the positions "door lock open" and "door lock closed", the device for the control by electric motor comprising a switch within the motor vehicle and / or in one of the doors as well as limit switches incorporated in the lock, namely one for the "Starting the engine" position and another for the "Off" position. of the engine ", and at least one of the limit switches that can be actuated according to the position of the pivoting latch, characterized in that in the r of the radial cam (5) is arranged a control lever (11) with two arms loaded by a spring and rotatable about a parallel axis (13).   to the axis (12) of the pivoting latch (2), which lever   mande (11) is on the one hand applied with a control cam (11a) against control elements (14) of the pivoting latch (2) and actuates, on the other hand, the operating lever (4), that , in addition, a spring-loaded stop lever (16) is provided to allow the operating lever (4) to be locked when it is brought into the open position while the pivoting latch ( 2) is held in place, the stop lever (16) being controllable via a stop lever control arm (17) by a member (18) of the pivoting latch (2). in the sense of a release of the operating lever (4), and that, in addition, the limit switch (9) for the position "Start of the engine" can be controlled by the control lever (11). ), while the limit switch (10) for the "Engine stop" position can be operated * by the radial cam (5).