JPS58222268A - Control circuit of door lock for automobile - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a control circuit for an automobile door lock that unlocks the locked state of a door lock knob provided on an automobile door.

Conventionally, when locking an automobile door, a cylinder lock provided on the outdoor side of the door is operated with a key, or a door lock knob provided on the indoor side of the door is operated.

To unlock the door, operate the cylinder lock with the key from the outside, and operate the door lock knob from the inside to unlock.Furthermore, from this state, pull the inside handle provided on the indoor side of the door. Operate to open the door.

As described above, when exiting the vehicle from the interior side while the vehicle is locked, there is a drawback that the door cannot be opened unless the door lock knob and the insight knob are operated.

The object of the present invention is to eliminate such drawbacks by providing a system in which when the door is locked, the door lock knob is unlocked by one operation of the inside handle and the door is simultaneously opened, and the key is inserted into the steering lock. The purpose of the system is to issue an alarm when the door is open, and to prevent the door from being opened even if the door lock knob is unlocked and the bow or inside handle is operated.

Hereinafter, one embodiment of the present invention will be described based on the drawings.

When the key (not shown) is inserted into the steering lock, even if the inside handle is operated when the door lock knob is locked, the door lock knob remains locked.
No alarm will be issued.

That is, when the key is inserted into the steering lock, the steering lock switch 6 is closed.
A positive voltage (hereinafter referred to as high H9) is applied from the battery 1 to the resistor 9 and the AND gate 13 via the limiting resistor 3 and the steering lock switch 6, and the AND gate 1
3□.

Terminal 1 becomes high H, and terminal f also becomes high H, but terminal g receives a low voltage (hereinafter referred to as low) through the inverter 11.
becomes.

Next, when the door lock knob (not shown) is in the locked state, the door lock knob switch 7 is closed, so the limiting resistance 4° is applied from the battery 1 to the door lock knob switch 7.
The terminals of the resistor 10 and the AND gate 14 are set to high through
Also, since the terminal d of the AND gate 13 is connected to the inverter 12, it becomes low L. At this time, when the inside handle (not shown) is operated, the inside handle switch 5 is closed, and the battery 1 is connected to the limiting resistor 2.
．． Resistor 8 and AN via inside handle switch 5
The terminal a of the D gate 13 becomes high H. Also, the terminal e of the AND gate 14 becomes high H, and the AND gate 1
The input terminals a, b, and d of No. 3 are no, high, high, and high, respectively.

Since it is low L and no output is produced, there is no output from the AMP 15 and the alarm 17 does not issue an alarm.

Also, the input terminal e1g of the AND gate 14.

h also becomes high H, low L, and high H, and there is no output from the AMP 16, and the driving member C (motor 18 or actuator 19) does not operate.

Next, if you remove the key from the steering lock and operate the inside handle while the door lock knob is in the locked state, the door lock knob becomes unlocked and the door can be opened. (To prevent forgetting to remove the key, however, the alarm will not operate at this time.) In other words, when the key is removed from the steering lock, the steering lock switch 6 opens, and since it is connected to the shear side 21 through the resistor 9, it becomes low L. . The terminal g of the AND gate 14 becomes low by the inverter 1.

When the door lock knob is locked, the door lock knob switch 7 is closed, so the AN
The terminal d of the D gate 13 is low, and the terminal d of the AND gate 14 is low.

Also, when the inside handle is operated, the terminal a of the AND gate 13 becomes NO and IH, as described above, and the AND
Terminal e of gate 14 also becomes IH, and AND gate 1
3 terminals a, b, and d are high H, low L, and low L, respectively, and since there is no output from AMP15, the alarm 17 is activated 1 to 3.
do not have.

:1' Also, the terminals e9g and h of the AND gate 14 are output as high H, high II, and high H, and the output from the AMP 16 drives the driving member C (motor 18 or actuator 19).
The door lock (not shown) is unlocked by the operation of the door lock (not shown).

Next, the key is inserted into the steering lock, and if you operate the inside handle while the door lock knob is unlocked, an alarm will be activated to prevent you from forgetting to remove the key.

In other words, when the key is inserted into the steering lock, the steering lock switch is activated.

Chiro is opened, and when the door lock knob is unlocked, the door lock knob switch 7 is opened, and when the inside handle is operated, the inside handle switch 5 is closed, and as above, AND: □: Terminal a of the gate 13 , b and d are respectively high H, no tame i H,
It becomes high H, and the output from AMP15 activates the alarm 17, but terminals e, g, and h of AND gate 14 are high H, o-L, and low L, so AMP
16 and is in an unlocked state.

Unfortunately, the alarm will not activate even if you operate the inside handle when the key is removed from the steering lock and the door lock knob is unlocked.

That is, when the key is not inserted into the steering lock, the steering lock switch 6 is open, and when the door lock knob is unlocked, the door lock knob switch 7 is also open, and when the inside handle is operated at this time, the inside The handle switch 5 is closed,
As before, the terminal a of the AND gate 13.

Since b and d are high H, low L, and high H and are not output to the AMP 15, the alarm 17 is not activated.

Further, since the terminals e, g, and h of the AND gate 14 are high H, high H, and low L, and there is no output, the driving member C (motor 18 or actuator 19) also does not operate.

By connecting the inside handle switch 5 and the door switch 20 in parallel, an alarm may be issued while the door is open.

Since the present invention is configured as described above, when opening the door from the indoor side, it can be done by operating only the insight knob without operating the inside lock knob, and it also prevents forgetting to remove the key. This has the useful effect of being able to prevent this.

[Brief explanation of the drawing]

The figure represents an electrical circuit diagram of one embodiment of the present invention. ■...Rose f')-15...Inside handle switch, 6...Steering lock switch, 13.
14...AND gate, 7...Door lock knob switch, 17...Alarm. Patent applicant: Kokusan Metal Industry Co., Ltd.

Claims (1)

[Claims] There is an inside handle switch that closes when the inside handle is operated, a steering lock switch that closes when the key is inserted into the steering lock, and a door lock knob switch that closes when the door is locked.The inside handle switch is connected to each AND gate. At the same time, a steering lock switch and a door lock knob switch are connected to each AND gate via an inverter, and a driving member and an alarm are connected to each AND gate via each AMP. A control circuit for an automobile door lock, characterized in that when the handle is operated, the door lock knob is unlocked by a driving member, and when the key is forgotten to be removed, the door lock knob is unlocked, and when the inside handle is operated, an alarm is issued. .