FR2786801A1 - CONDEMNATION / UNLOCKING STATE CONTROL SYSTEM OF A MOTORIZED OPENING LOCK, ESPECIALLY OF MOTOR VEHICLES - Google Patents

Abstract

The system uses a single pole switch (1) which detects the opening or closing of the door or other aperture controlled and a changeover switch (2) linked (4) to the lock motor (3). Two wires (9,10) signal switch logic states to a processor (7) through terminals (E1,E2) and the data is used to control the sense of electricity supply to the lock motor (3) from a battery (8)

Description

The present invention relates to a system for controlling the state of

  locking / unlocking of a motorized lock opening in particular of

motor vehicle.

  Systems of this type are already known in the state of the art, which include a switch for detecting the opening / closing state of the opening leaf and a locking / unlocking switch for the lock thereof.

  Generally, the switch is associated with means of mo-

  torisation of the locking / unlocking of the lock and the switch and the switch are connected to means for analyzing the state of these switches and switches, to control the operation of these motorization means

  in a sense of condemnation or in a sense of unlocking.

  Three connecting wires are then used between the switch and the commu-

and the means of analysis.

  One of these wires is associated with the open state detection switch

  opening / closing of the sash, while the other two are associated with both

  switch lockout and unlock information outputs.

  The information from the two terminals of this switch is

  therefore complementary to each other.

  However, and although this structure has a certain number of advantages in terms of its inviolability, its operational safety and the possibilities of fault diagnosis, it has a major drawback

  residing in its cost due to the use of these three connecting wires.

  It was then proposed in the prior art, control systems in which one of the information terminals of the switch

  conviction / unlocking is not connected to the means of analysis.

  This makes it possible to reduce the cost of this function, by eliminating one of the connecting wires, but it is understandable that this has negative repercussions on the inviolability of the lock, its operational safety in particular in the event of

  accident and the fact that it is impossible to diagnose a dysfunction

system.

  The object of the invention is therefore to solve these problems by proposing

  sant a control system that is both economical and safe.

  To this end, the subject of the invention is a system for controlling the state of locking / unlocking of a motorized lock, in particular of a door leaf of a motor vehicle, of the type comprising a state detection switch.

  opening / closing of the sash and a locking switch

  tion / unlocking associated with means of motorization of the condemnation-

  tion / unlocking of the lock, this switch and this switch being connected

  strung to means of analysis of the state of these switch and switch for

  control the operation of the motorization means in a locking direction

  nation or in a sense of unlocking, characterized in that the terminal

  Lockout / Lockout Switch Lockout Information

  tion is connected to the information terminal of the switch for detecting the opening / closing state of the opening, so as to allow connection of

  these switch and switch by two wires connecting to the processing means

is lying.

  The invention will be better understood with the aid of the description which follows.

  vre, given only by way of example and made with reference to the drawings an-

  attached, in which: - Fig.1 shows a block diagram illustrating the structure of a control system according to the invention; and

  - Fig.2 shows a table illustrating the operation of this.

  FIG. 1 shows a control system for

  the state of locking / unlocking of a motorized door lock, no-

many motor vehicles.

  This system generally comprises a switch designated by the general reference 1 for detecting the opening / closing state of the opening

  and a switch designated by the general reference 2 of condemnation

  tion / unlocking associated with means of motorization of the condemnation-

  tion / unlocking of the lock, designated by the general reference 3.

  These motorization means comprise for example a motor

  electrically connected by a mechanical link to switch 2, this mechanical link

  pic being shown schematically by a dotted line designated by the general reference

line 4 in this figure.

  This switch 1 and this switch 2 are then connected by the

  intermediary of connecting wires designated by the general reference 5 to analysis means 6 of the state thereof to control the operation of the

  motorization 3 in a locking direction or in a unlocking direction

nation.

  These analysis means then comprise for example a central unit

  information processing channel designated by the general reference 7 adapted to analyze the signals from the switch and the switch to drive a power stage designated by the general reference 8, for supplying the

  motor in one direction of rotation or the other.

  According to the invention, the condemnation information terminal of the community

  locking / unlocking sensor 2 is connected to the information terminal

  tion of the switch for detecting the opening / closing state of the opening so as to allow these switches and switches to be connected by

  two connecting wires 9 and 10, to the central unit 7 of the analysis means 6.

  The operation of this system is illustrated in FIG. 2, in which a 0 represents an entry to ground, a 1 represents an entry into

  open circuit, an F indicates that the door is closed, an O that the door is open

  green, D a state of unlocking the lock, C a state of locking

  lock nation, a P a permanent state and a T a transient state.

  It is clear from this table that the condemnation or the

  locking the lock requires a crossed evolution of the inputs E1 and E2 on the central information processing unit 7 of the analysis means 6,

  these inputs from switch 1 and switch 2.

  This structure therefore has a number of advantages including

  economically compared to the solutions proposed in the state of

  the technique, insofar as only two connecting wires are used between the

  switch and switch and central information processing unit.

  Furthermore, this structure also has good inviolability.

  because there is no action in the event of a cut in the electrical harness or disconnection

  door lock or interconnect connectors.

  Such a structure also has good operational safety.

  operation in the event of an accident, since there is also no action in this case in the event of a cut in the wiring harness or the disconnection of the lock connector or the door interconnection connector or short-circuit to the mass

of this beam during the accident.

  Finally, the functioning of this system can also be analyzed.

  for most faults, i.e. actually a disconnected connector, a

  cut, loss of mass at the lock or poor sec-

  quence of system operation, etc. It goes without saying of course that still other embodiments of

  this system can be considered.

Claims (3)

  1. System for controlling the state of locking / unlocking a motorized door lock, in particular of a motor vehicle, of the type comprising a switch (1) for detecting the opening / closing state of the door, and a locking / unlocking switch (2) associated with means (3) for motorizing the locking / unlocking of the lock, this switch and this switch being connected to means (6) for analyzing the state of these switches and switch for controlling the operation of the motorization means (3) in a locking direction or in a unlocking direction, characterized in that the locking information terminal of the locking / unlocking switch (2) is connected to the terminal   of the opening / closing state detection switch   vrant, so as to allow a connection of these switch and   tor by two wires connecting to the analysis means (6).   2. System according to claim 1, characterized in that the analysis means (6) comprise a central information processing unit (7) associated with a power stage (8) for controlling the operation of the means motorization.   3. System according to claim 1 or 2, characterized in that the motorization means are associated with the switch (2) through a link mechanical (4).