JPH0223662B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a keyless entry device for automobiles, in which a number input operation keyboard switch is disposed at or near the door of the 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 lid above the operating keyboard switch 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. , lid 3
A keyless entry device for automobiles has been developed in which the door is unlocked by opening the door and entering a password using a number input operating 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. It was extremely dangerous as it protruded outward and could cause injury to pedestrians.

The present invention has been made to eliminate the above-mentioned conventional drawbacks, and an object of the present invention is to provide a keyless entry device for an automobile in which the lid is automatically closed when the driver operates the ignition switch using the key. That is.

In order to achieve the above object, the present invention provides an electromagnetic coil corresponding to the magnet that latches with the lid open, which cancels the attraction force of the magnet, and links this electromagnetic coil with the ignition switch. The device is characterized in that when the ignition switch is turned on, the lid is unlatched by magnet attraction and the lid is automatically closed.

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

Reference numeral 4 denotes a car door. A case 5 made of synthetic resin or the like is embedded in a part of the outer surface of the door 4. Inside this case 5 is a number input operation keyboard switch made of a flexible printed circuit board or the like. 6 is attached to and incorporated into the printed circuit board 7. This printed circuit board 7 is connected by a lead wire 9 to a main body circuit 8 which includes a password storage circuit, a comparison circuit, an unlock drive circuit, various control circuits, and the like.

A lid 11 is pivotally attached to the opening of the case 5 via a pivot 10, and the lid 11 is always biased in the closing direction by a spiral spring 12.
Furthermore, a part of this lid 11 has a magnetic material 1 such as iron.
3 is attached and the lid 11 is opened, the magnetic body 13 is attracted to the part of the case 5 corresponding to the magnetic body 13 and the permanent latching mechanism latches the lid 11 in the open state against the spiral spring 12. A magnet 14 is attached, and an electromagnetic coil 15 is installed in the case 5 corresponding to the permanent magnet 14. This electromagnetic coil 15
is connected to a printed circuit board 7 by a lead wire 16, and connected to a main body circuit 8 via this printed circuit board 7 and a lead wire 9.

When the ignition switch is turned on using the key, a current flows through the electromagnetic coil 15, and the permanent magnet 14 flows through the electromagnetic coil 15.
The magnetic body 13 is configured to generate a magnetic force that cancels out the magnetic force that attracts the magnetic body 13 .

With this configuration, if you leave the key in the car, open the lid 11, enter the password using the number input operation keyboard switch 6, unlock the door 4 using the main body circuit 8, and open the door 4. When the ignition switch is turned on with the key left behind and the engine is started, current flows from the main body circuit 8 to the electromagnetic coil 15 and the permanent magnet 1
4 is generated, the latch of the lid 11 by the permanent magnet 14 is released, and the spiral spring 12
Due to the elasticity of the lid 11, the lid 11 is switched from the open state to the closed state.

In addition, in the above embodiment, the explanation has been given of a device provided on the door 4, but it can also be provided on the body near the door 4.

Further, the means for causing current to flow from the main body circuit to the electromagnetic coil in conjunction with the ON operation of the ignition switch may be provided as a switch means, either integrally with the ignition switch or separately.

As described above, the automotive keyless entry device of the present invention is configured, and by operating the ignition switch, the permanent magnet-based lid opening latch is released and the lid is automatically closed, allowing the vehicle to be started. Even if the vehicle is driven with the lid on, there is no risk of hitting pedestrians with the lid and injuring them, making it extremely safe.Furthermore, the number input operation keyboard switch section can also be used to ensure safety. It has many advantages and is of great industrial value.

[Brief explanation of drawings]

FIG. 1 is a front view showing a conventional keyless entry device for an automobile with the lid open, and FIG. 2 is a side sectional view showing an embodiment of the keyless entry device for an automobile according to the present invention. 4...Door, 5...Case, 6...Number input operation keyboard switch, 7...Printed circuit board, 8...Main circuit, 9...Lead wire, 10...Pivot, 11...Lid, 12
...Spiral spring, 13...Magnetic material, 14...Permanent magnet,
15...Electromagnetic coil, 16...Lead wire.

Claims (1)

[Claims] 1. A number input operation keyboard switch installed on the outer surface of the door or body of the car where a PIN code is entered to release the lock, and a number input operation keyboard switch located on the number input operation keyboard switch, at least a part of which is made of magnetic material. , a lid attached to the pivot provided on the number input operation keyboard switch so that it can be opened and closed, a spring that always biases the lid in the closing direction, and a magnetic material on the lid that attracts the lid when the lid is opened. , a permanent magnet provided to maintain the open state of the lid against the biasing spring; and a permanent magnet provided in proximity to the permanent magnet to generate a magnetic force in a direction that cancels the magnetic force of the permanent magnet. A keyless entry device for an automobile comprising an electromagnetic coil and means for operating the electromagnetic coil in conjunction with the ON operation of an ignition switch.