JPS5881837A - Remote control device mounted to automobile handle - Google Patents

Abstract

PURPOSE:To safely drive an automobile, by forming only a horn separately soundable even if a remote control device causes a trouble. CONSTITUTION:If a horn switch 16 is turned ON, an electric current flows in a horn driving relay 21 from a battery 13 through a slip ring mechanism 15, and a horn 14 generates an alarm sound. This horn switch 16 is normally turned OFF, and a capacitor 20 is applied with stable voltage by a fixed resistor 17 and Zener diode 18, then charged through a transistor 19. The charged voltage of said capacitor 20 is utilized as a power source for a remote control transmitter 5. A signal from the transmitter 5 is wirelessly fed to a remote control receiver 9, and a corresponding signal to a remote control transmission control switch 4 is output from the receiver 9.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a remote control device attached to an automobile steering wheel, in which a remote control transmitter for controlling various devices is installed on the steering wheel of an automobile,
The present invention aims to provide a system that uses a unique slip ring that can be easily incorporated into a general steering wheel, and allows only the horn to operate even if the remote control device fails.

As a conventional device of this kind, one has been developed in which a large number of operation switches are arranged on the steering wheel, making it easy and safe to operate even while driving a car.

However, with this configuration, it is necessary to use a slip ring to electrically connect each operation switch.
As many slip rings as there are operation switches are required, a special configuration is required. For this reason, the number of operation switches was determined by how many slip rings were provided, and the handle used in the past could not be used as is. An example of this is the configuration shown in FIG. 1 (,). That is, a conductive arm 2 is connected to the upper part of the steering shaft 1, a handle 3 is connected around the arm 2, and a remote control transmitter 5 equipped with various operation switches 4 is installed in the center of the handle 3. Attach the ring-shaped slip ring 6 that is electrically insulated from the steering shaft 1 to the center of the steering wheel 3, and then slide the remote control transmitter 5 onto the arm 2! A bearing 8 that is connected to a ring 6 etc. with a lead wire 7 and into which the steering shaft 1 is fitted.
A remote control receiver 9 is provided on the steering column 10 that covers the remote control receiver 9, and a combination switch 11 that is a collection of various automotive switches is installed on the steering column 10 that covers these.
The electrically connected slip ring 6 is provided with a contact 12 that is always in pressure contact with the slip ring 6. The slip ring 6 and the contact 12 function to supply the power supply voltage supplied to the combination switch 11 to the remote control transmitter 5. This remote control transmitter 5 is installed together with switches for audio equipment, and if this remote control transmitter 5 malfunctions, there is a big problem in that the most important thing in an automobile, the alarm, will not be issued.

FIG. 1(b) shows a block diagram of only the remote control device of FIG. 1(,). The ←) side of the battery 13 is connected to the receiver 9 and further connected as a power source for the transmitter 5 via a slip ring mechanism 15 consisting of a slip ring 6 and contacts 12. 4 - a horn switch in the aFi operation switch 4; 14 is a horn driven by the receiver 9; In this case, the horn is included in the remote control control, and there is a drawback that the alarm will not go off if the transmitter or receiver breaks down.The present invention solves these conventional drawbacks. It is intended to remove. The present invention is an improvement on the conventional circuit configuration shown in FIG. The present invention aims to provide a remote control device attached to an automobile steering wheel.

The embodiment will be described below with reference to FIGS. 2 and 3. First, 13 in Figure 2 is a car battery,
A horn switch 16 is connected to the battery 13 via an excitation coil inside a horn drive relay 21 and a slip ring mechanism 15.
A series circuit of a fixed resistor 17 and a Zener diode 18 is connected in parallel with the fixed resistor 17 and the Zener diode 1.
At the connection point of 8%npn) base 2 of transistor 19
6 is connected, a herrector 24 is connected to the terminal of the resistor 17, and a capacitor 20 is connected to the emitter 25 of the transistor 19.
Power is supplied to the remote control transmitter 5 from the connection point between the and the capacitor 2o. Also battery 1
3 is connected to a remote control receiver 9.

With this configuration, when the horn switch 16 is turned on, current flows from the battery 13 to the horn/drive relay 21 via the slip ring mechanism 15, generating a horn 1.4Fi alarm sound. This horn switch 1
6 is normally turned off, and the voltage of the capacitor 20 is stabilized by a fixed resistor 17 and a Zener diode 18, and is charged via a transistor 19. The charging voltage of the capacitor 20 is used as a power source for the remote control transmitter 5. In this case,
Since the diode characteristic of the emitter side of the transistor 19 is used, the charge in the capacitor 20 will not be discharged even when the horn switch 16 is turned on. can do. The signal from the remote control transmitter 5 is wirelessly sent to the remote control receiver 9, and the receiver 9 outputs a signal corresponding to the remote control transmission operation switch 4.

In the embodiment shown in FIG. 3, a charging resistor 23 is connected to the rechargeable battery 22 in place of the capacitor 20 shown in FIG. In this configuration, the rechargeable battery 22 is charged at 70°C when the horn switch is OFF, so that it can sufficiently cope with the case where the power consumption of the remote control transmitter 5 is large.

As described above, with the remote control device attached to the automobile nozzle of the present invention, even if the remote control device breaks down, only the horn will operate independently, ensuring safe driving of the vehicle. Moreover, it has the advantage that a conventional slip ring mechanism can be used and no special handle mechanism is required. Also, when transmitting, and capacitor 20
Alternatively, when charging the rechargeable battery 22, the necessary current can be supplied from the transistor 19, while the current consumption in the power supply circuit can be limited by the fixed resistor 17, so the current consumption when the transmission is not in operation can be suppressed as much as possible. 0

[Brief explanation of drawings]

FIG. 1(a) is a sectional view showing the structure of a control device installed in a conventional automobile steering wheel, and FIG. 1(b) is a block diagram of the remote control device shown in FIG. 1(,). FIG. 2 is an electric circuit diagram showing one embodiment of the remote control device attached to an automobile steering wheel according to the present invention, and FIG. 3 is an electric circuit diagram showing another embodiment.

Claims (1)

[Claims] A remote control transmitter with various operation switches is attached to the handle connected to the steering shaft, and power voltage is supplied from the battery to the remote control transmitter via the ring mechanism.1. In a remote control device attached to an automobile steering wheel, which is equipped with a remote control receiver that receives a signal and controls the operation of the device, the horn is transmitted from the battery to the excitation coil inside the horn drive relay and the slip ring mechanism. Connect the switch, connect a resistor in parallel to the horn switch, and a series circuit of a Zener diode, connect the pace of an Sflpn transistor to the connection point of the resistor and Zener diode, and connect it to the 10,000-pin terminal of the resistor. An automobile steering wheel is characterized in that the collector of a transistor is connected, the emitter of the transistor is connected to a capacitor or a rechargeable battery, and the connection point of the emitter is connected to the power supply input of a remote control transmitter. Remote control device for producing electricity.