JPH0223663B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a keyless entry device in which a number input operation keyboard switch is disposed at or near the door of an automobile, and the door is unlocked using a password instead of a key. The present invention aims to provide a highly safe keyless entry device for automobiles in which the upper lid is configured to automatically close when the ignition switch is turned on.

Recently, as shown in Fig. 1, a number input operation keyboard switch 2 housed in a case 1 has been placed near the door handle of a car, so that it can be used in case the driver locks the key while leaving the key inside the car. A keyless entry device has been developed in which a door is unlocked by opening a lid 3 covering a case 1 and inputting a password using a number input operation keyboard switch.

However, in the conventional type, a cover 3 is provided to prevent the number input operation keyboard switch from being exposed to the outside at any time, but sometimes people forget to close the cover 3 and start the car with the cover 3 open. Since the lid 3 protrudes outward, there is a risk of hitting and injuring pedestrians while the vehicle is running, making it extremely dangerous.

The present invention is intended to eliminate the above-mentioned conventional drawbacks, and an object of the present invention is to provide a keyless entry device for a vehicle in which the lid automatically closes when the driver operates the ignition switch with the key. That is.

In order to achieve the above object, the present invention disengages the engaging piece from the lid by turning on the ignition switch, which sucks the engaging piece that engages with the edge of the lid when the lid is open. It is characterized by being configured with an electromagnet.

Embodiments of the present invention will be described below with reference to FIG. 2.

Reference numeral 4 denotes a door of the automobile or a body portion close to the door, and a case 5 is embedded in a part of this door or body 4.

A number input operation keyboard switch 6 constructed using a flexible printed circuit board or the like is attached to a printed circuit board 7 and incorporated into the case 5. This printed circuit board 7 is connected by a lead wire 9 to a main body circuit 8 consisting of a password storage circuit, a comparison circuit, an unlock drive circuit, an engine circuit, and the like.

A lid 11 is installed in the opening of the case 5 via a pivot 10 so as to be openable and closable, and the lid 11 is always urged to close by a spring 12 such as a spiral spring.

When the lid 11 is opened, the lid 11
An L-shaped engagement piece 13 that locks one end and latches the lid 11 in the open state is connected to the case 5 via a support shaft 14.
It is rotatably provided. This engaging piece 13 is made of magnetic metal such as iron, and one piece 13a
A spring 15 is tensioned at one end, and always biases the engaging piece 13 in the counterclockwise direction.
A force is obtained to maintain the engagement of the other piece 13b with one end of the lid 11.

An electromagnet 16 is arranged in a position close to one piece 13a of this engaging piece 13, and this electromagnet 16 is connected to the main body circuit 8 via a lead wire 17, a printed circuit board 7, and a lead wire 9, and is ignited by a key. When the tension switch is turned on, a current flows and causes one piece 13a of the engagement piece 13 to be connected to the spring 15.
The engaging piece 13 is rotated clockwise to release the engagement of the other piece 13b with one end of the lid 11.

The means for passing current from the main body circuit 8 to the electromagnet 16 may be provided by providing a switch means integrally or separately with the ignition switch linked to the ignition switch.

With this configuration, if you forget your key in the car, open the lid 11 by hand, latch it in that state with the engagement piece 13, and operate the number input operation keyboard switch 6 to enter your password. When inputted, if the input matches the password stored in the main body circuit 8, the unlock drive circuit operates to unlock the door. When the door is unlocked and opened in this way and the ignition switch is turned on using the key that was left behind, a current flows through the electromagnet 16, attracting the engaging piece 13 and releasing it from the lid 11. and then tighten the lid 11 with the spring 12
Rotate it so that it closes.

As described above, the automobile keyless entry device of the present invention releases the latch by the engaging piece when the lid is open using an electromagnet operated by operating the ignition switch. This eliminates the need to drive with the lid protruding from the vehicle, which eliminates the risk of hitting and injuring pedestrians on narrow roads, making it safer and protecting the number input operation keyboard switch. It can also be measured reliably and with high reliability, which is of great industrial value.

[Brief explanation of drawings]

FIG. 1 is a front view of a conventional automobile keyless entry device with the lid open, and FIG. 2 is a cross-sectional side view showing an embodiment of the automobile keyless entry device of the present invention. 4...door or body, 5...case, 6...number input operation keyboard switch, 7...printed circuit board, 8...main circuit, 9...lead wire, 10...pivot,
DESCRIPTION OF SYMBOLS 11... Lid, 12... Spring, 13... Engagement piece, 14... Support shaft, 15... Spring, 16... Electromagnet.

Claims (1)

[Claims] 1. A number input operation keyboard switch provided on the outer surface of the door or body for inputting a PIN number to release the lock, and a number input operation keyboard switch located above this number input operation keyboard switch and provided on the number input operation keyboard switch. A lid attached to a pivot so that it can be opened and closed, a spring that always biases the lid in a closing direction, and an engagement member at least partially made of a magnetic material that engages and latches with the lid when the lid is opened. an ignition switch; an electromagnet that is provided close to the magnetic part of the engagement piece and attracts the magnetic part to release the engagement between the engagement piece and the lid; and an ignition switch. A keyless entry device for an automobile comprising means for passing a current through the electromagnet in conjunction with the ON operation.