JP2003129715A - In-vehicle remote control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an in-vehicle remote control device, in which a signal transmission-reception system is used efficiently as the whole system and which can give the arrangement of a circuit allowance. SOLUTION: The remote control device has an in-vehicle installed signal generating means SGE, on which a keyless entry device 4A transmitting an unlocking signal by a radio wave to an electronic lock for a door of a vehicle is mounted detachably by a mounting means CN, and an operating signal generated by the signal generating means SGE is input to a signal generating system STR for the keyless entry device 4A and the operating signal is transmitted to in-vehicle load.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention utilizes a transmission / reception function of a keyless entry device for unlocking a vehicle door from a remote location by an unlocking signal placed on a radio wave, and transmitting / receiving a remote control signal inside the vehicle. The present invention relates to a remote control (hereinafter referred to as a remote control) device.

[0002]

2. Description of the Related Art Conventionally, as an apparatus for transmitting an operation signal to an on-vehicle load (speaker section, air conditioner section, lamp section, etc.) by operating a remote control switch provided on a steering wheel, for example, Japanese Patent Laid-Open No. 11-11511 shown in FIGS. There is a vehicle antenna device described in Japanese Patent Publication No. 27023.

As shown in FIG. 5, this device is provided with a steering wheel 2 of a vehicle and a column switch 1 mounted on the rear side of the steering wheel 2, and the steering wheel 2 has an existing horn switch 2
C, the remote control switch 2D on the pad part of the handle 2,
A transmission / reception circuit 2E that modulates a corresponding operation signal coded by a microcomputer according to an operation of the remote control switch 2D on the handle 2 and demodulates a received signal, and a signal from the transmission / reception circuit 2E has been transmitted and transmitted as a radio wave. It has an antenna 2A that receives radio waves and sends them to the transmission / reception circuit 2E. 2B is an earth pattern.

The column switch 1 is mounted on, for example, a steering column portion (not shown) on the rear surface side of the steering wheel 2, and is operated by the driver on the left and right of the switch body 1C. Equipped with levers 1D and 1E for operating the signal lamp operating system circuit,
A transmitter / receiver circuit 1F for receiving radio waves transmitted from the remote control device 5 and the keyless entry device 4 in the vehicle through the built-in antenna 1A and transmitting an operation signal based on lever operation to an in-vehicle load inside the switch body 1C. Built in.

The configuration of this transmission / reception circuit 1F is shown in FIG.
As shown in, the radio wave received by the antenna 1A of the column switch 1 is demodulated by the transmission / reception unit 71 to extract a coded signal and input to the microcomputer (CPU) 72.
The microcomputer 72 determines the control code by referring to the input coded signal and the reference code stored in advance. Then, the microcomputer 72 outputs a control signal to the vehicle-mounted load 73 corresponding to the determined control code.

FIG. 6 shows a remote control switch 2D arranged on the pad portion of the handle 2, a microcomputer 2F that encodes a signal output by operating the remote control switch 2D, and the signal encoded by the microcomputer 2F and output as a modulation signal. Modulation signal output circuit 2G, transmission / reception circuit 2E that FM-modulates the transmitted carrier signal by the modulation signal and transmits from antenna 2A, microcomputer 2F, remote control switch 2
A voltage regulator 2H for supplying a stabilized power supply voltage is built in D and each circuit 2E, 2G.

In the conventional device having such a structure, when a radio wave is transmitted from the transmission circuit of the keyless entry device 4 outside the vehicle, the radio wave is received by the antenna 1A of the column switch 1 and input to the transmitting / receiving section 71. Transmitter / receiver 7
1 is a microcomputer 7 that demodulates radio waves and extracts a coded signal
Enter 2. The microcomputer 72 outputs a signal for instructing door unlock to a control unit (not shown) based on the result of the authentication processing of the coded signal.

As a result, the control unit outputs a control signal to the door lock actuator to unlock the vehicle door.

On the side of the handle 2, when the remote control switch 2D provided on the pad portion is operated, the input port of the microcomputer 2F corresponding to the operated switch S is L.
Invert to level.

The microcomputer 2F outputs a coded signal having a frequency corresponding to the port address inverted to the L level as a modulation signal to the modulation signal output circuit 2G. At this time, since the carrier wave is output from the microcomputer 2F to the transmission / reception circuit 2E having the FM modulator, the carrier wave is FM-modulated by the coded signal, and the modulated wave is used as the control signal for the antenna 2
Transmit from A to column switch 1.

On the side of the column switch 1, this radio wave is received by the antenna 1A and is input to the transmission / reception section 71. The transmitter / receiver 71 demodulates the radio wave to extract the coded signal and inputs it to the microcomputer 72. The microcomputer 72 decodes the coded signal and sends a control signal to a corresponding vehicle-mounted load, for example, an air conditioner.

[0012]

As described above, the conventional device has the antennas in the transmission / reception circuits on the steering wheel side and the steering column side, and the respective antennas transmit and receive radio waves of the same modulation method.

Further, since the keyless entry device also has a built-in transmission circuit and antenna for modulating and transmitting the coded signal by the same modulation method, the number of transmission / reception circuits and antennas is increased as a whole, and the vehicle door is unmounted. Considering the transmission / reception circuit and the antenna of the keyless entry device, in which the operation is unnecessary for a long period after locking, it cannot be said that an efficient signal transmission / reception system is utilized as the entire system.

Further, when the transmission / reception circuit and the antenna are arranged in a place where a large mounting space for the equipment cannot be secured such as a steering system of a vehicle, a considerably strict design requirement is imposed in consideration of heat dissipation. Become.

The present invention has been made in order to solve the above problems, and provides an in-vehicle remote control device which can efficiently use a signal transmission / reception system as a whole system and have a margin in circuit arrangement. The purpose is to do.

[0016]

As shown in the basic configuration diagram of FIG. 1, a vehicle remote control device according to the present invention is a keyless entry device 4A for transmitting an unlocking signal by radio waves to an electronic lock of a vehicle door. Wearing means CN
Signal generating means SG installed in the vehicle to be detachably attached by
E, and the operation signal generated by the signal generating means SGE is supplied to the signal transmission system STR of the keyless entry device 4A.
Is input to and the operation signal is transmitted to the vehicle-mounted load.
According to the present invention, after unlocking the vehicle door with the keyless entry device 4A, the keyless entry device 4A is attached to the signal generation means SGE installed in the vehicle, and the operation signal generated from this signal generation means SGE is keyless. It is input to the signal transmission system STR of the entry device 4A and transmits an operation signal to the vehicle-mounted load.

The signal generating means SGE of the in-vehicle remote control device according to the present invention is provided on the steering wheel of the vehicle,
The operation signal is generated in conjunction with the operation of the hand switch SOP of the handle. According to this invention, the signal generating means S is operated by operating the hand switch SOP of the handle.
An operation signal is generated from the GE, and this operation signal is input to the signal transmission system STR of the mounted keyless entry device 4A to transmit the operation signal to the vehicle-mounted load.

The keyless entry device 4A of the in-vehicle remote control device according to the present invention comprises the signal generating means S.
When mounted on the GE, the signal input system for inputting a signal to its own signal transmission system STR is automatically switched to the signal input from the signal generating means SGE. According to the present invention, when the keyless entry device 4A is mounted on the signal generating means SGE provided on the handle, the signal generating means SGE is automatically switched by switching its own signal input system SIN to the signal generating means SGE.
The operation signal from is taken in and transmitted from the signal transmission system STR.

The signal generating means SGE of the in-vehicle remote control device according to the present invention outputs a control signal for disabling the signal input system SIN of the keyless entry device 4A when the keyless entry device 4A is mounted. According to the present invention, when the keyless entry device 4A is mounted on the signal generating means SGE provided on the handle, the signal input system SIN is generated by the control signal output from the signal generating means SGE.
Is invalidated.

The keyless entry device 4A of the in-vehicle remote control device according to the present invention is a signal input system SI.
Between N and the signal transmission system STR, there is provided a signal cutoff means SOFF for performing a signal cutoff operation by a control signal from the outside. According to the present invention, when the keyless entry device 4A is mounted on the signal generating means SGE provided on the steering wheel, the control signal output from the signal generating means SGE causes a gap between the signal input system SIN and the signal transmitting system STR. The signal cut-off means SOFF provided is operated to cut off the signal input of the signal input system SIN to the signal transmission system STR.

[0021]

BEST MODE FOR CARRYING OUT THE INVENTION First Embodiment Hereinafter, an in-vehicle remote control device according to a first embodiment of the present invention will be described with reference to the drawings. In addition, in FIG.
The same reference numerals as 6 indicate the same or corresponding parts. FIG. 2 is a perspective view showing the entire in-vehicle remote control device according to the present embodiment. The handle 2 in the present embodiment has a built-in remote control switch 2D and a microcomputer 2F (see FIG. 4) that generates and outputs a coded signal corresponding to the switch S (see FIG. 4) in the remote control switch 2D. A modulation signal output circuit for outputting as a modulation signal, a transmission / reception circuit for modulating and transmitting a coded signal and an antenna for transmitting the transmitted coded signal are not provided,
The transmitting / receiving circuit and the antenna of the attached keyless entry device 4A are used.

As shown in FIG. 2, the pad portion of the handle 2 is provided with the key insertion portion 6 of the keyless entry device 4A. As shown in FIG. 3, the knob portion N of the keyless entry device 4A is inserted into the key insertion portion 6, and the blade portion B having the built-in antenna is projected from the key insertion portion 6. A switch signal input terminal T1B, a coded signal input terminal T2B, an oscillation start signal output terminal T3B, and a ground terminal T4B are provided at the bottom of the knob portion N, and a switch signal input terminal T1A exposed at the bottom of the insertion portion 6 and a microcomputer signal. It is provided corresponding to the input terminals T2A, T3A and the ground terminal T4A.

As shown in FIG. 4, the switch signal input terminal T1A and the microcomputer signal input terminals T2A and T3A provided at the bottom of the switch signal input terminal T1A are supplied with a + power supply voltage of the microcomputer to input the microcomputer signal. Terminal T
The coded signal output terminal T2B of the microcomputer is connected to 2A, and the oscillation start signal output terminal T3B of the microcomputer is connected to the microcomputer signal input terminal T3A. The ground terminal T4A is connected to the ground of the device.

As the configuration of the keyless entry device 4A, as shown in FIG. 4 as well, a switch DSW for performing an output operation of a door unlock signal and a door unlock signal which is coded in accordance with the operation of the switch DSW are output. A microcomputer 2Fa that generates and outputs, a modulation signal output circuit 2G that outputs a coded door unlock signal as a modulation signal, a transmission / reception circuit 2Ea that FM-modulates a carrier wave with the modulation signal, and transmits from a built-in antenna 2Aa, a microcomputer Two
Normally closed electronic switches ESW1 and ES are provided between the signal output terminal of Fa and the modulation signal output circuit 2G and the transmission / reception circuit 2Ea.
W2 is inserted.

The OFF signal input terminals T1 of the normally closed electronic switches ESW1 and ESW2 are commonly connected to the switch signal input terminal T1B. Modulation signal output circuit 2
The G coded signal input terminal T2B is connected to the microcomputer signal input terminal T2A, and the oscillation start signal output terminal T3B of the transceiver circuit 2Ea is connected to the microcomputer signal input terminal T3A. The ground terminals T4A and T4B are connected to the-terminal of the built-in battery 8.

Next, the operation of the in-vehicle remote control device having the above structure will be described. The operation of the keyless entry device 4A alone and the operation of the transmission / reception circuit 1F of the column switch 1 which receives a transmission radio wave from the remote control device 5 are the same as those of the conventional device.

Here, if the driver uses the keyless entry device 4A to unlock the vehicle door and gets into the vehicle and sits down on the seat, the keyless entry device 4
As shown in FIGS. 2 and 3, A is inserted from the knob portion N into the key insertion portion 6 provided in the pad portion of the handle 2. Since the knob portion N is inserted to the bottom against the pressing force of a leaf spring (not shown) provided on the inner side surface of the key insertion portion 6, after the insertion, it may fall off due to vibration or the insertion position may rattle. There is no.

When the knob portion N is inserted to the bottom of the key insertion portion 6, as shown in FIG. 3, a switch signal input terminal T1B, a coded signal input terminal T2B, and an oscillation start signal provided on the bottom portion of the knob portion N. Output terminal T3B, ground terminal T
4B is a switch signal input terminal T provided with the insertion portion 6.
1A, microcomputer signal input terminals T2A, T3A, and ground terminal T4A are electrically connected.

As a result, on the keyless entry device 4A side, the normally closed electronic switches ESW1 and ESW2 are turned off.
The switch signal input terminal T1B commonly connected to the signal input terminal T1 is applied with a + power supply voltage from the switch signal input terminal T1A to be in an open state, and the microcomputer 2Fa is disconnected from the modulation signal output circuit 2G and the transmission / reception circuit 2Ea. The keyless entry device 4A operates only the signal transmission function.

The coded signal input terminal T2B of the modulation signal output circuit 2G is connected to the microcomputer signal input terminal T2A, and the oscillation start signal input terminal T3B of the transmission / reception circuit 2Ea is connected to the microcomputer signal input terminal T3A. Ground terminal T4
B is connected to the ground terminal T4A on the handle 2 side.

As described above, when the keyless entry device 4A is incorporated in the signal transmission system on the handle 2 side and the remote control switch 2D of the pad portion is depressed by the switch S corresponding to the remote operation target, the switch S is dealt with. The input port of the microcomputer 2Fa is inverted to L level. As a result, the microcomputer 2Fa inputs a signal to the oscillation start signal input terminal T3B of the keyless entry device 4A through the microcomputer signal input terminal T3A.

In response to this signal, the oscillating section (comprising the transistor Q1, the crystal XL, etc.) of the transmitting / receiving circuit 2Ea built in the keyless entry device 4A starts the oscillating operation and the carrier wave of several hundred (MHz). Is output to the modulator (which is composed of the transistor Q2).

Further, the microcomputer 2Fa outputs a coded signal to the coded signal input terminal T2B of the modulation signal output circuit 2G through the microcomputer signal input terminal T2A and the transmission / reception circuit 2Ea through the modulation signal output circuit 2G as the coded signal as a modulation wave. Sent to the modulation section of.

In the modulator, the carrier wave is FM-modulated by the coded signal and transmitted to the antenna 1A on the column switch 1 side by the antenna 2Aa built in the keyless entry device 4A. As shown in FIG. 7, the column switch 1 demodulates the received radio wave in the transmission / reception unit 71 to extract a coded signal and sends it to the CPU 72. The CPU 72 outputs a load operation signal to the corresponding in-vehicle load 73 according to the coded signal to operate it.

To explain this operation in detail, the electric wave received by the antenna 1A of the column switch 1 is
The coded signal demodulated by the transmission / reception unit 71 is extracted and input to the microcomputer 72. The microcomputer 72 determines the control code by referring to the input coded signal and the reference code stored in advance.

Then, the microcomputer 72 outputs a control signal to the vehicle-mounted load 73 corresponding to the determined control code. In this way, by using the signal transmission system on the handle side and the signal transmission system of the keyless entry device in common, the signal transmission system in the vehicle can be simplified and the signal transmission system of the keyless entry device can be effectively used.

Embodiment 2 In Embodiment 1 described above, the antenna 2A built in the keyless entry device 4A transmits a radio wave to the column switch 1 side, and then transmits a control signal from the column switch side to each on-vehicle load. However, the radio waves may be directly transmitted to the vehicle-mounted loads from the antenna 2A built in the keyless entry device 4A, and the vehicle-mounted loads may operate by recognizing the frequency assigned to them by the transmitted radio waves.

As a result, the signal transmission system in the vehicle can be simplified and the amount of wire harness laid can be reduced.

[0039]

According to the present invention, after unlocking the vehicle door with the keyless entry device 4A, the keyless entry device 4A is mounted on the signal generating means SGE installed in the vehicle and generated by the signal generating means SGE. The signal transmission system S of the keyless entry device 4A
By inputting to TR and transmitting the operation signal to the vehicle-mounted load,
It is possible to effectively use the keyless entry device, reduce the signal transmission system as the in-vehicle remote control device, and simplify the entire device.

According to the present invention, the hand switch SOP of the handle is operated to generate an operation signal from the signal generating means SGE, and the operation signal is input to the signal transmission system STR of the mounted keyless entry device 4A to be mounted on the vehicle. By transmitting the operation signal to the load, the operation signal by operating the hand switch of the steering wheel is transmitted by the signal transmission system built in the keyless entry device when necessary, so that the entire device can be simplified.

According to the present invention, when the keyless entry device 4A is attached to the signal generating means SGE provided in the handle, the signal input system of itself is automatically switched to the signal generating means SGE and the operation signal from the signal generating means SGE is sent. By capturing and transmitting from the signal transmission system STR, there is an effect that the signal input switching to the signal transmission system STR of the keyless entry device 4A can be easily performed.

According to the present invention, when the keyless entry device 4A is attached to the signal generating means SGE provided in the handle, the signal input system SIN is invalidated by the control signal output from the signal generating means SGE, so that the keyless entry device 4A is disabled. There is an effect that the signal input switching to the signal transmission system STR of the device 4A can be performed without malfunction.

According to the present invention, when the keyless entry device 4A is mounted on the signal generating means SGE provided on the steering wheel, the control signal output from the signal generating means SGE causes the keyless entry device 4A to operate between the signal input system SIN and the signal transmitting system STR. The signal cut-off means SOFF provided in the
By cutting off the signal input of the signal input system SIN to the signal input system SIN, there is an effect that the signal input switching to the signal transmission system STR of the keyless entry device 4A can be performed without malfunction and can be easily performed.

[Brief description of drawings]

FIG. 1 is a diagram showing a basic configuration of an in-vehicle remote control device according to the present invention.

FIG. 2 is a perspective view showing the overall configuration of an in-vehicle remote control device according to the present embodiment.

FIG. 3 is a view showing a state where the handle of the keyless entry device according to the present embodiment is inserted into the pad portion.

FIG. 4 is a diagram showing an electric system of an in-vehicle remote control device according to the present embodiment.

FIG. 5 is a perspective view showing a configuration of a conventional device.

FIG. 6 is a diagram showing an electrical system of a conventional device.

FIG. 7 is a diagram showing a signal transmission system arranged on the steering column side.

[Explanation of symbols]

4A keyless entry device CN mounting means SGE signal generation means STR signal transmission system SIN signal input system SOP hand switch

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Claims (5)

[Claims] 1. A keyless entry device for transmitting an unlocking signal by radio waves to an electronic lock of a vehicle door is equipped with a signal generating means installed in a vehicle which is detachably mounted by a mounting means, and is generated by the signal generating means. An in-vehicle remote control device, characterized in that an operation signal is input to a signal transmission system of the keyless entry device to transmit the operation signal to a vehicle-mounted load. 2. The signal generating means is provided on a steering wheel of a vehicle,
2. The in-vehicle remote control device according to claim 1, wherein an operation signal is generated in association with the operation of the handle hand switch. 3. The keyless entry device, when mounted on the signal generating means, automatically switches a signal input system for inputting a signal to its own signal transmitting system to a signal input from the signal generating means. The in-vehicle remote control device according to claim 1 or 2. 4. The in-vehicle remote control device according to claim 3, wherein the signal generating means outputs a control signal for disabling a signal input system of the keyless entry device when the keyless entry device is mounted. 5. The in-vehicle remote according to claim 4, wherein the keyless entry device has a signal cutoff means for performing a signal cutoff operation according to a control signal from the outside, between the signal input system and the signal transmission system. Control device.