JPH0219335Y2 - - Google Patents

Description

[Detailed description of the invention] (Field of industrial application) This invention is an anti-theft device for automobiles. Specifically, by opening the hood panel that covers the opening of the engine room so that it can be opened and closed, the battery power terminal can be unplugged. This prevents the anti-theft system from being stopped.

(Prior art) As a conventional anti-theft device for a car, when the engine key is removed, opening/closing objects such as side doors, back doors, and sliding roofs that can be opened and closed between the inside and outside of the car are closed. The starter does not start even if the opening/closing body is opened without using the specified key in a state in which the locking device provided on these opening/closing bodies is locked, that is, in a normal parking state. This prevents the engine from starting, sounds the horn, and flashes the turn lamps to sound an alarm, thereby preventing theft of the car and the items stored inside the car. What is done is known.

However, with this type of conventional anti-theft device, even though the hood panel, or bonnet, which covers the opening of the engine compartment is closed and locked,
If you forcefully open the battery and remove the battery power supply located near the engine, the above horn will sound,
Warnings such as flashing turn lamps will no longer occur. Therefore, although it is possible to prevent the vehicle from being stolen while the vehicle is running, it is not possible to prevent theft of items and engine parts inside the vehicle.

Therefore, there are anti-theft devices for automobiles that are designed to prevent the hood panel from being opened from the outside if the opening/closing body is locked in the closed state during normal parking of the automobile (for example, Japanese Patent Application Laid-Open No. 56-99843 Public bulletin).

In this type of anti-theft device, when the hood panel is closed, the wire connected to the hood panel is wound up by the spring force of the mainspring, and when the wire is tensioned, a locking mechanism such as a ratchet mechanism is used to unwind the wire. Although the hood panel is configured to be locked and difficult to open, if the hood panel were to be opened, no detection device is provided to detect this open state.

Therefore, even if the hood panel is forcibly opened from the outside, no alarm is issued, so there is a drawback that theft of items and engine parts inside the vehicle cannot be prevented.

(Purpose of the invention) This invention was made to improve the above-mentioned conventional drawbacks.When the hood panel that covers the opening provided in the vehicle body is opened during normal parking, this open state is To provide an anti-theft device for an automobile that detects theft and activates an alarm device to prevent theft of articles and engine parts inside a vehicle.

(Structure of the invention) In order to achieve the above purpose, in the present invention,
It has the following structure. That is, a theft prevention device by opening a hood panel that freely opens and closes an opening provided in a vehicle body, the device comprising: a striker provided on either one of the hood panel and the vehicle body; and a striker provided on the other, horizontally an engaging member that is swingable around an axis and can be freely engaged with and detached from the striker; a detection means for detecting the lock; an opening/closing body that freely opens and closes the interior and exterior of the vehicle; a lock state detection device that detects the locked state of a lock device provided on the opening/closing body; and signals from the two detection devices. a control device that outputs an alarm signal on the condition that rocking of the engaging member in the disengagement direction is detected when the locking device of the opening/closing body is in the locked state; and an alarm device that is activated in response to an alarm signal.

(Example) Hereinafter, an example of this invention will be described with reference to the drawings.

FIG. 1 shows a plan view of an automobile equipped with an anti-theft device according to this invention. In the figure, 1 is a car body, 2 is a hood panel (bonnet);
The upper opening 3 of the engine room (not shown) provided in the engine compartment is covered so as to be openable and closable. Reference numeral 4 denotes an opening/closing body that can open and close the interior of the vehicle and the outside of the vehicle. A device 5 is provided.

The lock device 5 consists of a cylinder lock 5A, a lock mechanism 5B consisting of a striker and a latch plate (not shown), and an inner lock knob 5C provided inside the left and right side doors 4A, 4B.
Cylinder lock 5A of lock device 5, lock mechanism 5
B. The inner lock knob 5C is equipped with a lock state detection device 6 for detecting the lock state as shown in FIG.
is provided.

The lock state detection device 6 in FIG. 2 includes key cylinder switches 6A and 6B that turn off when the key is not inserted into the cylinder lock 5A (FIG. 1) of the left and right side doors 4A and 4B, and the back door 4C.
The key cylinder switch 6C turns OFF when the key is not inserted into the cylinder lock 5A (Fig. 1), and the lock mechanism 5B (Fig. 1) of the left and right side doors 4A, 4B is locked. OFF
lock link switches 6D, 6E, and inner lock knobs 5C of left and right side doors 4A, 4B.
Inner lock knob unlock switch 6F, 6G that turns OFF when (Fig. 1) is locked
and door switches 6H, 6I that turn off when the left and right side doors 4A, 4B (Fig. 1) are closed.
The door switch 6J is turned off when the back door 4C (Fig. 1) is closed.

In FIG. 3, a striker 7 is attached to the inner surface of a hood panel 2 that covers the opening 3 of the vehicle body 1 in an openable and closable manner, and an engagement member 8 that can be engaged with and detached from the striker 7 is provided on the vehicle body 1 side.

The engagement member 8 is comprised of a latch 8A and a claw lever 8B, which are rotatably attached to a base 10 bolted 9 to the vehicle body 1 and pivoted around pins 11 and 12, so that the hood panel 2 can be closed. If the striker 7 is engaged with the claw 8a of the latch 8A as shown in the figure, it is held in a locked state, and when this locked state is released, for example, when the latch 8A is operated in the release direction. A detection device 13 that detects this operation and turns on is provided. Also, an opener wire 14 is attached to one end of the latch 8A and can be pulled in the direction of arrow A from inside the vehicle.
By pulling the opener wire 14 from inside the vehicle and rotating the latch 8A clockwise about the pin 11 against the spring force of the spring 15, the claw portion 8a of the latch 8A and the striker can be connected. 7 is disengaged, the hood panel 2 is unlocked, and a state in which it can be opened can be obtained. do
A switch (not shown) is provided to turn it off.
This switch is connected in series to the detection device 13. Therefore, even if the detecting device 13 is turned on by operating the engaging member 8, that is, the latch 8A in the disengagement direction in order to unlock the hood panel 2 from the vehicle interior, the above-mentioned device connected in series to the detecting device 13 Since the switch (not shown) is turned off, the state is the same as when the detection device 13 is turned off.

In FIG. 2, 15 is a control device, and one terminal of this control device is c, d, e, f, g, h, i,
Between j, k, l and ground 16 are key cylinder switches 6A, 6B, 6C, lock link switches 6D, 6E, inner lock knob unlock switches 6F, 6G, door switches 6H, 6I, 6J,
A detection device 13 is provided.

17 is an ignition switch, and ignition output terminal 1 of the ignition switch 17
7A is connected to a terminal a on one side of the control device 15, and is also connected to a terminal p on the other side of the control device 15 via a starter cut relay 18. The starter output terminal 17B of the ignition switch 17 is connected to the starter cut relay 1.
8 to ground 16.

On the other hand, the + terminal of the battery power supply 19 is connected to the input terminal 17C of the ignition switch 17 and the input terminal μ of the control device 15, and is also connected to the other terminal o of the control device 15 via the security lamp 20. It is connected to a terminal b on one side of the control device 15 via a keyless switch 21, and further connected to a terminal q on the other side of the control device 15 and a horn 23 via a horn relay 22.

On the other hand, the terminals r and s on the other side of the control device 15 are
Each is connected to a turn lamp 24. In the figure, 25 is an alternator, 26 is a ground terminal of the control device 15, and the horn 23 and turn lamp 24 constitute an alarm device 27.

In the above configuration, when the engine key is removed after the vehicle has stopped operating, the keyless switch 21 shown in FIG. 2 is turned OFF. Next, the crew got off the train and
By closing all of the opening/closing bodies 4 in FIG. 1, that is, the right side door 4A, the left side door 4B, and the back door 4C, the door switch 6 in FIG.
H, 6I, and 6J are each turned off. Also,
By locking the locking device 5 shown in FIG. 1 to obtain the locked state of the left and right side doors 4A, 4B, the second
The lock link switches 6D, 6E, inner lock knob unlock switches 6F, 6G, and key cylinder switches 6A, 6B, 6C shown in the figure are respectively
It will be turned off. In this case, since the hood panel 2 shown in FIG. 1 closes the opening 3, the detection device 13 shown in FIG. 2 is in a standby state in which it is turned off.

In the above-mentioned standby state, if one or more of the following conditions are satisfied, that is, if an operation for theft is performed, the alarm device 27 is activated and an alarm is issued.

(1) Open any one of the left and right side doors 4A, 4B and back door 4C in Figure 1 without using the key.
When one of the door switches 6H, 6I, and 6J in the lock state detection device 6 shown in FIG. 2 is opened, a signal is output from the other terminals q, r, and s of the control device 15. When the excitation coil 22a of the horn relay 22 is excited, the relay contact 22b closes, thereby causing the horn 23 to sound and issue an alarm, and the turn lamp 24 to flash to issue an alarm.

(2) Door lock device 5 in Figure 1 without using a key
In other words, the lock mechanism 5B of the lock device 5 is directly released without using a key, or the inner lock knob 5C of the side doors 4A, 4B is unlocked by using a tool or by breaking the door glass. Therefore, when the lock device 5 is released, either the lock link switches 6D, 6E or the inner lock knob unlock switches 6F, 6G shown in FIG. As in case (1), a warning is issued by sounding the horn 23 and flashing the turn lamp 24.

(3) When the hood panel 2 shown in Fig. 1 is forcibly opened from the outside, the latch 8A constituting the engaging member 8 shown in Fig. 3 is rotated in the release direction (clockwise) about the pin 11, and the latch 8A is rotated about the pin 11 as a fulcrum. At the same time as the engagement between the portion 8a and the striker 7 is released, the movement in the detachment direction is detected by the detection device 13, and the detection device 13 shown in FIG. 2 is turned on. To that end, the above
As in cases (1) and (2), a warning is issued by blowing the horn 23 and flashing the turn lamp 24.

Note that the above-mentioned standby state is canceled when one or more of the following conditions are satisfied.

(1) When the lock device 5 in Fig. 1 is released using the key, the key cylinder switch 6 in Fig. 2
The standby state is canceled by turning on A, 6B, and 6C.

(2) If the ignition switch 17 in Figure 2 is turned on using the key, the keyless switch 2
When 1 is turned ON, the standby state is canceled.

Further, the above-mentioned alarm state can be canceled by rotating the cylinder lock 5A of FIG. 1 using a key and turning on either one of the key cylinder switches 6A, 6B.

In the above embodiment, the striker 7 is provided on the hood panel 2, and the engaging member 8 that engages with and disengages from the striker 7 is provided on the vehicle body 1 side, but this invention is limited only to the above embodiment. Instead, the striker 7 is provided on the vehicle body 1 side, and the engagement member 8
Even if the structure is provided in the hood panel 2, the same effects as in the above embodiment can be obtained.

(Effects of the invention) As explained above, according to this invention, when the hood panel is opened from the outside in the standby state, this opening state is detected by the detection device, and a signal is output from the control device. Since the alarm system is activated by the vehicle, the theft of engine parts and theft of items inside the vehicle can be prevented.

In addition, instead of placing the detection device that detects the opening of the hood panel directly facing the hood panel, which tends to vibrate up and down due to vibrations of the vehicle body, this detection device is installed only when the hood panel is opened. Since it is provided facing the swinging engagement member, it is possible to prevent the detection device from erroneously operating, that is, the alarm device from erroneously operating.

[Brief explanation of the drawing]

Fig. 1 is a plan view showing an example of an automobile equipped with an anti-theft device according to the invention, Fig. 2 is a circuit diagram of the device, and Fig. 3 is an example of an engaging member for keeping the hood panel locked. FIG. DESCRIPTION OF SYMBOLS 1... Vehicle body, 2... Hood panel, 3... Opening, 4... Opening/closing body, 5... Lock device, 6... Lock state detection device, 7... Striker, 8... Engaging member, 13 ...Detection device, 15...Control device,
27...Alarm device.

Claims (1)

[Scope of Claim for Utility Model Registration] A device for preventing theft by opening a hood panel that freely opens and closes an opening provided in a vehicle body, comprising: a striker provided on either the hood panel or the vehicle body; an engaging member provided on the other side, which is swingable around a horizontal axis and capable of engaging and detaching from the strucker; and an engaging member provided facing the swinging range of the engaging member and capable of disengaging the engaging member. a detection means for detecting rocking in the direction; an opening/closing body for freely opening/closing partitioning between the interior of the vehicle and the outside of the vehicle; a lock state detection device for detecting the locked state of a locking device provided in the opening/closing body; A control device that receives signals from two detection devices and outputs an alarm signal on the condition that rocking of the engaging member in the disengagement direction is detected when the locking device of the opening/closing body is in the locked state. An anti-theft device for an automobile, comprising: and an alarm device that operates in response to an alarm signal from the control device.