JPS60206754A - Car three alarm output circuit - Google Patents

Abstract

PURPOSE:To prevent car theft by producing alarm current continuously when unfit key is used for unlocking of door or starting of engine. CONSTITUTION:Door and a starter switch locks are incorporated with microswitches B, C for functioning key A identifier F and a magnetic resistance element E for converting the magnetic recognition code of key into a current signal. Upon insertion of unfit key into said lock, a mismatch signal voltage is produced from the identifier F to function a magnet switch H associated with interlock thus to produce alarm current continuously. While upon insertion of correct key, the alarm current produced from said switch H is interrupted.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention provides a method for solving discrepancies that occur from a key identification device when opening a locked car door or starting an engine using illegal means or using an inappropriate key for the 5 locks. A circuit with a magnetic switch with an interlock that operates an ICJ (analog switch) and continuously outputs an alarm current by using a signal voltage or a voltage emitted from a plate contact switch under the door's crow drainer rubber, and a starter. The alarm current output is cut off by the 5-alarm output circuit that outputs the current by illegal means to the ignition circuit of the switch, and the "AND" circuit that operates when the correct key is inserted. This invention relates to a six-theft alarm output circuit for automobiles that includes a recovery circuit, and an embodiment thereof will be described with reference to the drawings.

Use the key with the magnetic recognition symbol "M" shown in FIGS. 1, 2, and 5 in the key shown in FIG.

When inserting the rBJ and "C" microswitches and the magnetoresistive element "E" into the built-in lock, the "B" microswitch is pressed and the identification device HIF J is activated to pass through the W% resistance purple rEJ. The magnetic recognition code of the key rAJ is converted into a current signal by the identification device rFJ-, and when the microswitch "C" is subsequently pressed, the voltage signal and magnetic resistance possessed by the memory circuit of the identification device rFJ shown in Figure 2 are Input from element "E". The voltage signal of the magnetic recognition code input storage circuit shown in Fig. 2 is compared with the voltage signal of the magnetic recognition code input storage circuit shown in Fig. 2 by the verification circuit shown in Fig. 2.
Detected at output point "0" of FJ.

If this detected signal voltage is "low", that is, a 1 match signal, the "G""IC analog switch" does not operate.

The mismatch signal voltage “high” is the output point “0” of the identification device rFJ
If the magnetic recognition code of rAJ of the key is different from the voltage signal stored in the identification device "F", or if s! Magnetism J, UA
If something without the FmfF sequence is inserted, it is detected.

The signal voltage from this “0” [rGJ due to high J output
The IC analog switch is activated, and the current from the power supply of rNJ connects the interlock magnet switch of l''HJ to ON, and the alarm current is output to the output point rXJrX'J even if the key is removed from the lock. .

In addition, the plate contact switch rlJ under the crow drainer rubber of the car door adheres to a part of the door's locking device when it is unlocked using illegal means, and the operating current is applied to the magnetic switch with interlock "■1". Give the alarm current to the output point rX J
Continuously output to rX', l.

Starter switch lock rDJ ignition circuit rQ
If the current of "P" is connected to J by an illegal means other than the key, this current will be connected to the magnetic switch "
MJ is output to the alarm current output points "X" and "XI)", and continues while the circuit "P" 7rQJ is improperly connected.

In this way, the alarm current output point r
In order to release the output of JrX'J, the identification device r
If a person locks the key with the same magnetic recognition code rAJ stored in the FJ's memory circuit, the low signal voltage detected at the identification device rFJ output point ``0'' will be set to ``L''. The inverter inverts the "high" voltage signal and the voltage from the built-in "C" microswitch when the key is pressed.
It is put into an AND circuit of "1("), and a "high" signal voltage is obtained at the AND output point of +n<j by the logic of the AND circuit.

This voltage turns on the IC analog switch "J", activates the magnetic switch with interlock "■", turns off the contact connected to the alarm current, and outputs the alarm current output point rx J rX3". Cut off.

As explained above, the present invention provides an alarm current f('+i
fW can be output and this alarm current can be
J Release the block by inserting the correct IL into the lock 1
It has a return circuit. This is an automobile theft alarm output circuit.

[Brief explanation of drawings]

Figure 1 is a circuit diagram of the present invention Figure 2 is Figure 1 rFJ block diagram and lineup Figure 3 is a side view of the lock according to the present invention fjy Figure 4 is Figure 3 Y-YI: cross-sectional view Figure 5 is a side view of the key Figure 6 is a 9 layout position of the present invention Figure 7 is a partially enlarged view of Figure 6 Graphical symbol “A” = Magnetic recognition code r13JrcJ = Micro switch unit” = Ignition switch “E” = Magnetic resistor 4 redundant element “F” = Key identification device “G”
= Anacro switch [HJ: Macnet switch with interlock "■" =
Plate contact switch “J” = Anacro switch [+< J = AND circuit “L” = Inverter No.
2 Figure vs S4 1 Figure■

Claims (1)

[Claims] Car door and starter switch locks, keys,
It has a built-in microswitch that activates the identification device, a magnetic resistor (redundant element) that converts the key's 11-stop key, and U identification code into a current signal, and a plate contact switch is installed under the glass drain rubber of the door. However, by inserting an illegal key into this lock, a magnetic switch with an interlock that outputs an alarm current in R is activated by using the mismatch signal voltage from the identification device or by the voltage emitted from the plate contact switch. It has a circuit that outputs an alarm current to the ignition circuit of the starter switch, and an alarm output circuit that outputs current by operation other than the shaft in the ignition circuit of the starter switch, and by inserting the appropriate key to release this valley width output cutoff, Activate the “and” circuit,
A theft alarm output circuit for an automobile, characterized by having a return circuit that interrupts and releases an alarm current output from a magnetic switch with an interlock.