JP2005271898A - Anti-theft alarm device for automobile - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an anti-theft alarm device for an automobile. <P>SOLUTION: An alarm and a contact (2) separately making a power source and operated similarly to a contact (1) of a half-shut door alarm circuit of a conventional automobile are provided. The contact (2) is made to a time relay contact so that it becomes opened with a time after it is closed. Nextly, a contact (3) is provided and is made to a remote control operation contact such that the contact (3) also becomes closed if the door is closed by the remote control or the key for the door and the contact (3) also becomes opened if the door is opened by the remote control or the key. The alarm (5) is provided subsequently to the contact (3) and nextly welding-ground (6) is taken. Therefore, if the door is locked by the remote control key, the alarm is operated if the door is opened by duplicate key, picking, destroying the key and breaking glass. Even if the door is immediately closed, the alarm is operated for a set time and even if the alarm is stopped to sound, the alarm is made sound if the door is opened. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

Detailed Description of the Invention

    The present invention relates to an apparatus for generating an alarm by operating an alarm when a door of a car is opened by, for example, keying, picking, or breaking a window glass.

    Conventional anti-theft alarm devices for automobiles must be operated separately, because they are installed alone, the alarm device key and the door key.

Problems to be solved by the invention

    The present invention has been invented to eliminate such annoyance.

Means to solve the problem

Now, let me explain the configuration.
(B) As shown in FIG. 2, a time relay contact (2) that operates in the same manner as the contact (1) of the conventional half-door alarm circuit, with a separate power source, is provided. Even if the contact ((1) becomes open, it is provided so that it will open with a time limit.
(B) Next, a contact (3) that is used to open and close the door and that is operated by a remote control and key is provided.
(C) The contact (3) is provided so that it is closed when the door is locked with the remote control and key, and is opened when the door and lock are released with the remote control and key.
(D) The alarm (5) is provided next to the contact (3), and then the ground (6) is provided.

(1) The alarm device (3) may be used as a horn or a substitute.
(2) The alarm lamp may be turned on simultaneously with the alarm device (3).
(3) Wiring may be provided for each door as shown in FIG. 3 so that the alarm operates.

The invention's effect

Therefore, in this invention, when the door is locked with the remote control key, an alarm device circuit is formed, and when the door is opened by breaking the lock, picking, lock, breaking the window glass, etc., the alarm is activated and the door is opened. The alarm will continue to operate for a limited time even if the door is closed immediately, and the alarm will continue to operate when the door is closed.
Moreover, it does not operate by vibration or it operates by just touching it.

Claims (2)

  A conventional half-door alarm, which operates in the same way as the contact (1), has a time relay with a separate power supply, a contact (2), then a contact (3), then an alarm (5), Next, an alarm device provided with a ground (6)   The contact (3) is an alarm device provided with a remote control operation contact so that the contact (3) is closed when the door key is closed with the remote control key, and the contact (3) is opened when the door is opened with the remote control key.