JPH068942Y2 - Remote control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION <Industrial field of application> The present invention relates to a remote control device, and more particularly to a remote control device that automatically detects a stationary state and transmits a remote control signal.

<Prior art> Locking doors of cars and homes with electromagnetic switches,
There is one that unlocks the door lock by operating a hand-held remote control device.

In addition, there is a device that operates a remote control device to stop the operation of the anti-theft device when entering the vehicle when the anti-theft device that prevents the automobile from being stolen is operating. If the operation of the anti-theft device is not stopped, the anti-theft siren will sound when the door of the car is opened, the car is given a considerable shock, or the trunk is opened.

<Problems to be solved by the invention> As described above, in order to unlock the door or stop the operation of the anti-theft device with the conventional remote control device, the switch of the remote control device is manually operated to set a predetermined remote control signal. There is a problem that it is very annoying when you have luggage in your hand.

In view of the above, an object of the present invention is to provide a remote control device that can automatically issue a remote control signal for unlocking the door or stopping the operation of the anti-theft device without operating the remote control device.

<Means for Solving the Problem> In the present invention, the above-mentioned problem is to provide a switch provided with a movable contact member having a spring supporting structure which is separated from the fixed contact member when stationary and swings to contact the fixed contact member when moving. ,
It is connected to the switch and keeps the output voltage constant when touching,
This is achieved by a time constant circuit that changes the output voltage with a predetermined time constant when shifting to the isolated state, and a transmission unit that transmits a remote control signal when the output voltage exceeds a predetermined threshold level.

<Operation> When the remote control device is put in a pocket or the like and walks, the fixed contact member and the movable contact member of the switch are intermittently contacted by vibration. The output voltage of the time constant circuit is reset to a constant voltage at the time of contact, changes with a predetermined time constant in the isolated state, and when the output voltage exceeds the threshold level, the transmitter outputs and outputs a remote control signal. Therefore, while the user is walking toward the door and approaching the door, the switch is turned on and off, so that the output voltage of the time constant circuit cannot exceed the threshold level and the remote control signal is not output. However, when it comes near the door and stops, the switch does not turn on and off, and the isolated state occurs, so that the output voltage changes and exceeds the threshold level. As a result, a remote control signal is output and the door lock is released.

<Embodiment> FIG. 1 is a block diagram of a remote control device according to the present invention, in which 1 is a switch, 2 is a time constant circuit, 3 is a remote control signal transmitter, and 4 is a manually operated state of a controlled object. An operation unit 5 for setting the operating state is an antenna.

The switch 1 includes a case 1a, a fixed contact member 1b fixed to the case, and springs 1c, 1d made of a conductive material,
1e and a spherical movable contact member 1f supported by these springs. The movable contact member 1f serves as the fixed contact member 1 when the entire remote control device is in a stationary state.
It is separated from b, and swings to intermittently contact the fixed contact member 1b when the entire remote control device is moving. Further, the spring 1d supports the movable contact member 1f in the vertical direction and the springs 1c and 1e in the horizontal direction, so that even if vibration occurs, the spring 1d is rapidly damped.

The time constant circuit 2 is configured by arranging a series circuit of a resistor 2a and a capacitor 2b between a power source Vcc and a ground, and a connection point of the resistor and the capacitor is electrically connected to the movable contact member 1f via a conductive spring 1e. Has been done. Movable contact member 1f
When the fixed contact member 1b is separated from the fixed contact member 1b, the capacitor 2b is charged and its output voltage Eout is a constant voltage (= Vc).
In the state c), when the contact state is reached, the voltage is discharged to 0 V, and when the contact state is changed to the isolated state, the output voltage Eout is changed toward Vcc with a predetermined time constant.

The transmission unit 3 is composed of a control unit 3a having a microcomputer configuration and a transmission circuit 3b, and the control unit 3a outputs the output voltage Eout of the time constant circuit 2.
Is above the threshold, or operation unit 4
When an operation release key (not shown) is operated, a predetermined code signal is modulated by the transmission circuit 3b and transmitted from the antenna 5.

Now, when you walk with the remote control device in your pocket,
Due to the vibration, the fixed contact member 1f of the switch 1 and the movable contact member 1b come into contact with each other intermittently. The output voltage Eout of the time constant circuit 2 is reset to 0 volt at the time of contact and changes with a predetermined time constant in the isolated state. When the output voltage exceeds the threshold level, the remote control signal is output from the transmitter 3. To be done. Therefore, when the user is walking toward the door of a car or home, the switch 1
The output voltage Eout of the time constant circuit repeats charging / discharging as shown in FIG. 2 and therefore cannot exceed the threshold level Vth. However, when it comes close to the door and stops (see the fourth step in FIG. 2), the switch does not switch on and off and the isolated state occurs. Therefore, the charging of the capacitor continues and the output voltage Eout exceeds the threshold level Vth. As a result, the transmitting unit 3 transmits a remote control signal for releasing the operation from the antenna 5 to release the door lock or stop the operation of the antitheft device. In a place away from the controlled object (automobile, home door), if the output voltage Eout exceeds the threshold level when stationary, the remote control signal is output at this time. In such a case, the remote control signal is the controlled object. There is no problem because it does not reach.

In the above description, the movable contact member 1f is configured to make electrical contact with the fixed contact member 1b when large vibrations occur both vertically and horizontally. However, the movable contact member 1f is contacted only by vertical vibration. It may be configured.

<Effects of the Invention> As described above, according to the present invention, a switch provided with a movable contact member having a spring support structure that is isolated from the fixed contact member when stationary and swings to contact the fixed contact member when moving, and is connected to the switch. A constant circuit that changes the output voltage with a predetermined time constant when the output voltage is kept constant at the time of contact and shifts to an isolated state, and a remote control signal is output when the output voltage exceeds a predetermined threshold level. Since the remote control device is composed of the transmitting unit for transmitting the signal, it is convenient that the user can automatically output a desired remote control signal such as operation release when the user comes near the control target such as a door and stops.

[Brief description of drawings]

FIG. 1 is a block diagram of a remote control device of the present invention, and FIG. 2 is an output voltage waveform diagram for explaining the operation. 1 ... switch 1b ... fixed contact member 1f ... movable contact member 2 ... time constant circuit 3 ... transmitter

Claims (1)

[Scope of utility model registration request] 1. A switch provided with a movable contact member having a spring supporting structure which is separated from a fixed contact member when stationary and swings to contact the fixed contact member when moving, and an output voltage which is connected to the switch and which is connected to the switch. A time constant circuit that changes the output voltage with a predetermined time constant when the output voltage is kept constant and moves to an isolated state, and a transmission unit that transmits a remote control signal when the output voltage exceeds a predetermined threshold level. Remote control device characterized by.