JPS6245945B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a locking device for an opening/closing body.

As a conventional locking device for an opening/closing body, for example, a locking device for a vehicle door will be described. In this type of door locking device, a lock knob and a key cylinder are connected to the door lock body by a link mechanism, and by operating the lock knob or key cylinder, The door lock itself can be locked and unlocked. In addition, a door lock actuator is provided in the door lock body so that all the doors of the vehicle can be locked and unlocked at the same time. When locking the door lock body from outside the vehicle, the key plate must be inserted into the key cylinder and rotated to perform the locking operation, making it cumbersome to perform the locking operation using the key plate from outside the vehicle. It was hot.

The present invention has been made in view of the above-mentioned conventional problems, and an object of the present invention is to lock the door lock body from outside the vehicle interior using a simple means using a key plate. As a means for achieving such an object, the present invention provides a lock for an opening/closing body consisting of a lock body, a lock actuator for locking and unlocking the lock body, and a lock circuit for operating the lock actuator. In the device, a reed switch for locking the lock actuator is provided in the lock circuit, a magnet is provided near the reed switch, and a key plate or an attachment to the key plate changes the magnetic field between the reed switch and the magnet. The gist is that the reed switch is activated by

Hereinafter, the present invention will be described in detail based on embodiments shown in the accompanying drawings.

1 to 3 show an embodiment in which a locking device according to the present invention is applied to a vehicle door. In FIG. 1, 1 is an escutcheon of an outside handle attached to the door outer panel, 2 is a door handle rotatably attached to the escutcheon 1, and 3 is a key cylinder. As shown in FIG. 2, on the back surface of the escutcheon 1, a reed switch 4 and a magnet 5 are arranged close to both sides of a recess 6 formed in the escutcheon 1. The reed switch 4 acts as an operating switch for a door lock actuator which will be described later, but in this embodiment a normally closed type is used, and in normal times it is turned off by the magnetic force of the magnet 5. By inserting the key switch 7 or a key switch accessory into the recess 6 of the escutcheon 1, the magnetic field is blocked or attenuated, and the magnetic force from the magnet 5 is weakened to turn on. Note that the reed switch 4 is not limited to a normally closed type, but a normally open type can also be used, in which case the signal from the reed switch is processed electrically. Further, in the above embodiment, a recess 6 is formed in the escutcheon 1 between the reed switch 4 and the magnet 5.
is not necessarily necessary, and it is sufficient that the magnetic field of the magnet 5 can be interrupted or attenuated by bringing the key switch 7 or the like close to the reed switch 4 or the magnet 5. The reed switch 4 may be turned on and off by appropriately adjusting the installation position and sensitivity.

FIG. 3 shows a circuit diagram of a door lock device including the reed switch 4. As shown in FIG. In the figure, 8 is a battery, 9 is a fuse, and 10 is a transistor 12 connected to the battery 8 via a relay coil 11 when the reed switch 4 is turned on.
13 is a door lock actuator, which in this embodiment is a solenoid for the door lock. 14,
15 is a relay coil connected in series to the battery 8 and an unlock switch; 11a and 14a are relay switches that are switched by the energization of the respective relay coils 11 and 14, and supply voltage to the door lock solenoid of the battery 8; Acts to switch direction. A bidirectional Zener diode 16 is connected in parallel to the end of the solenoid 13 to absorb the back electromotive force of the door lock solenoid 13.
In this embodiment, the reed switch 4 is equipped with an ajar door detection function to reliably prevent the door lock body from being locked when the door is incompletely closed, and to reliably prevent the key plate 7 from being left behind in the vehicle interior. A switch 17 and a key plate detection switch 18 are connected in series, and these three switches 4,
The door lock solenoid 13 can be operated only when the solenoid 17 and 18 are turned on. The half-door detection switch 17 detects the incompletely closed state of the door, and is turned on only when the door is completely closed. Further, the key plate detection switch 18 maintains an off state when the key plate 7 is inserted into the key groove of the ignition switch, and turns on when the key plate 7 is pulled out from the key groove. Therefore, even if you leave the vehicle with the key plate 7 still inserted in the keyway of the ignition switch and try to lock the door with something other than the key plate 7, the key plate detection switch 18 will not turn on. When the door lock solenoid 13 does not operate, the driver can realize that the key plate 7 has been left behind in the vehicle interior.

Further, the above-mentioned door lock device is provided with an antenna storage device 19 that automatically stores the radio antenna when the door lock body is locked.
As shown in FIG. 3, the circuit of this antenna storage device 19 is a timer circuit that operates a transistor 20 for a certain period of time when the reed switch 4, door ajar detection switch 17, and key plate detection switch 18 are all turned on. 21, a relay coil 22 connected in series to the transistor 20, an ignition switch 23 connected to the power source 8, an antenna lift/lower switch 24, an antenna drive motor 25, and the ignition switch 23 and antenna lift/lower switch 24. The relay switch 26 is connected in parallel to the antenna drive motor 25 by bypassing the antenna drive motor 25. A limit switch 27 is used to prevent the antenna drive motor 25 from producing a clutch sound until the timer circuit 21 stops operating after the antenna is lowered.

Next, the operation of the vehicle door lock device constructed as described above will be explained.

Currently, when the driver locks the door lock body from outside the vehicle, the key plate 7 is required.
Instead of the troublesome operation of inserting the tip of the key plate 7 into the key cylinder 3 and performing the locking operation as in the past, after the door is completely closed, the tip of the key plate 7 is inserted into the recess 6 of the escutcheon 1. By hitting it, you can lock the door lock body.

With such a simple operation, the reed switch 4, the door ajar detection switch 17, and the key plate detection switch 1 of the door lock circuit shown in FIG.
8 turns on, thereby turning on the timer circuit 10.
operates to supply base current to the transistor 12 for a certain period of time. Therefore, the transistor 12 is turned on, current flows from the battery 8 to the relay coil 11, and the relay switch 11a is connected to the battery side. Current flows in a fixed direction. As a result, the door lock body of each door is locked by the electromagnetic attraction force of the door lock solenoid 13. In this way, the key plate 7 or the attachments of the key plate 7 can be viewed from outside the vehicle, for example.
Locking can be easily performed by simply touching or approaching a predetermined part of the escutcheon 1 with the key holder, and if the key plate 7 is not taken out of the vehicle and the door is not fully closed, the door lock body will be locked. Since the door cannot be locked, it is possible to prevent the key plate 7 from being left behind in the vehicle interior and from locking the door lock body when the door is left ajar.

In addition, when the reed switch 4, door ajar detection switch 17, and key plate detection switch 18 of the door lock circuit are turned on, the timer circuit 21 of the antenna storage circuit is activated, and the transistor 20 is driven for a set time to drive the relay coil 2.
2 is energized. As a result, relay switch 26
is closed, the antenna drive motor 25 is driven in the downward direction of the antenna, and the antenna can be retracted. In this way, by connecting the antenna storage device to the door lock device, it is possible to reliably prevent forgetting to store the antenna, and there is no risk of the antenna being accidentally broken when you leave the car without storing it. There is no such thing. In particular, conventional radio antenna storage devices do not operate when the ignition switch is off, so if you realize that you forgot to lower it after getting out of the car, you must operate the ignition switch and antenna switch inside the vehicle again. There are some hassles you have to go through. In the case of this embodiment, since the door is automatically stored when the door is locked, there is no need for the troublesome work of the conventional method.

Next, to explain the unlocking operation, first of all, when unlocking from outside the vehicle, all you have to do is insert the tip of the key plate 7 into the key cylinder 3 and perform the unlocking operation, as in the conventional case. To lock the lock, pull up the lock knob and turn on the unlock switch 15 interlocked with the lock knob to cause current from the battery 8 to flow through the relay coil 14 and switch the relay switch 14a to the battery 8 side. By doing this, the relay switch 14 is connected to the door lock solenoid 13 from the battery 8.
A current flows in the opposite direction to that described above through a, and the door body is unlocked by the electromagnetic attraction force in the opposite direction of the door lock solenoid 13.

In the above embodiment, the solenoid 13 is used as the door lock actuator, but a motor may be used instead of the solenoid 13. In addition, door ajar detection switch 1
If only the reed switch 4 is turned on while the key plate detection switch 7 or the key plate detection switch 18 is in the off state, a buzzer may be sounded to warn that the door is incompletely closed or the key plate 7 has been left behind. Furthermore, in the above embodiment, the reed switch 4 is connected to the door ajar detection switch 17 and the key plate detection switch 18, and the door lock device is connected to the antenna storage device. Of course, the door lock device can also be operated.

As explained above, according to the locking device for an opening/closing body according to the present invention, the locking operation of the opening/closing body locking device can be performed extremely easily from outside the vehicle interior.
In addition, since the locking operation is performed using the key plate or key plate attachment, it is necessary to take the key plate out of the vehicle. It is expected that this will solve the problem of locking the lock device. Additionally, a conventional key plate can be used, compared to, for example, a case where the key plate is equipped with a magnet. figure,
Also, even if the key plate is dropped on the ground,
No iron sand or the like adheres to the key cylinder, and the operation of the key cylinder is not obstructed.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the escutcheon of the outside handle according to the present invention, Fig. 2 is a sectional view taken along the line taken in Fig. 1, and Fig. 3 is a circuit diagram showing an embodiment of the locking device for the opening/closing body according to the present invention. It is. 4... Reed switch, 5... Magnet, 7... Key plate, 13... Door lock solenoid (lock actuator).

Claims (1)

[Claims] 1. In a lock device for an opening/closing body consisting of a lock body, a lock actuator for locking and unlocking the lock body, and a lock circuit for operating the lock actuator, the lock actuator is locked in the lock circuit. In addition to providing a reed switch to be activated, a magnet is provided near the reed switch, and the reed switch is activated by changing the magnetic field between the reed switch and the magnet using a key plate or an attachment to the key plate. Features a locking device for the opening and closing body.