Rear door safety lock arrangement
First Claim
1. A safety and locking arrangement for preventing unauthorized interior unlocking of at least one vehicle door, comprising:
- first switching means for alternately connecting a first voltage potential to a first or second conductive line;
first motor means, connected in series with a second voltage potential, for operating a door lock;
second switching means connected between said first and second conductive lines and said first motor means for connecting said first motor means by said first conductive line to said first switching means only when said door is unlocked, to activate said first motor means to lock the door in response to actuation of said first switching means, and for connecting said first motor means by said second conductive line to said first switching means only when said door is locked, to activate said motor means to unlock the door in response to actuation of said first switching means; and
indicator means connected in parallel with said first switching means and between said first voltage potential and said second conductive line, for indicating when said door is locked and unlocked.
1 Assignment
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Accused Products
Abstract
This invention relates to a locking mechanism for the locks of the rear doors of a motor vehicle with one locking device for each door lock acting against the unauthorized opening of the doors from the interior side of the doors, a so called child safety lock. Each locking device is assigned an electric-motor-driven control unit, the rotational direction of said control unit being reversible via a double pole changing switch (double throw switch) and said control unit being connected with it and being able to be remotely operated with respect to locking or unlocking of the lock by a switching element that can be operated from the front seats. The locking condition of the locking device is indicated by an optical display.
To reduce manufacturing parts and expenses for the circuit controlling the optical display, this circuit is formed by parts of the circuit controlling the locking devices themselves. In certain embodiments the optical display is connected in series with a p-n-p transistor having its base and collector connected with respective grounded "off" lines of the locking device control circuits.
25 Citations
14 Claims
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1. A safety and locking arrangement for preventing unauthorized interior unlocking of at least one vehicle door, comprising:
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first switching means for alternately connecting a first voltage potential to a first or second conductive line; first motor means, connected in series with a second voltage potential, for operating a door lock; second switching means connected between said first and second conductive lines and said first motor means for connecting said first motor means by said first conductive line to said first switching means only when said door is unlocked, to activate said first motor means to lock the door in response to actuation of said first switching means, and for connecting said first motor means by said second conductive line to said first switching means only when said door is locked, to activate said motor means to unlock the door in response to actuation of said first switching means; and indicator means connected in parallel with said first switching means and between said first voltage potential and said second conductive line, for indicating when said door is locked and unlocked. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification