JP2596173Y2 - Electronic control unit - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic control unit for remote control for achieving a vehicle anti-theft function and the like.

[0002]

2. Description of the Related Art FIG. 4 shows a conventional connection structure of a vehicle control receiving antenna. In the electronic control device 1, a control circuit including a microcomputer and its input / output circuit and the like are mounted in a rectangular parallelepiped (ie, box-shaped) case. The electronic control unit 1 receives a radio wave signal for remote control via the whip antenna 2. The whip antenna 2 includes a coaxial cable 3, a matching unit 4, and a rod unit 5. The rod portion 5 is, for example, 300M
The length is adjusted so as to tune to a radio wave of a pre-assigned frequency in the Hz band. The matching unit 4 matches and connects the impedance of the coaxial cable 3 and the impedance of the rod unit 5. This whip antenna 2
Is connected to the electronic control unit 1 by a plug 6. As shown in FIG. 4, the electronic control unit 1 is connected to connectors provided in various parts of the vehicle by a wire harness 8 via a connector 7 provided on a side surface of the case.

FIG. 5 shows a portion of the electronic control unit 1 shown in FIG. 4 where the whip antenna 2 and the wire harness 8 are connected. FIG. 4 for connection of whip antenna 2
The illustrated plug 6 is removably inserted into the jack 9. The jack 9 is fixed to the front surface of the wiring board 10 by soldering its leads 11 and 12 to the back surface. The plug 6 and the jack 9 for connecting the whip antenna 2 are of a so-called RCA type. When the plug 6 is inserted into the jack 9, the outer sheath of the coaxial cable 3 is connected to the lead 11, and the core wire is connected to the lead 12. The plug 6 is inserted so as to cover the outer surface of the jack 9, and the connection for the outer skin and the connection for the core wire are electrically insulated.

[0004] The connector 7 for connecting the wire harness 8 includes:
It is connected to the wiring board 10 via the leads 13 and 14.
The leads 13 and 14 are bent into an L-shape to form the connector 7.
From the wiring board 10.

[0005]

The conventional whip antenna 2 is directly connected to the electronic control unit 1 by a plug 6, as shown in FIG. For this reason, it is necessary to attach the antenna jack 9 to the wiring board 10 of the electronic control device 1. The conventional connection between the so-called RCA type plug and the jack is held by elastic force, and therefore, there is a high possibility that the connection may be loosened or removed due to vibration of the vehicle or the like.

Further, as shown in FIG. 5, when soldering to the wiring board 10 from the back surface, the distance between the leads 11 and 12 and the jack 9 is short, so that flux enters the inside due to a capillary phenomenon or the like. It easily adheres to the outer surface and electrical connection tends to be poor. Although such jacks that take measures against so-called solder drip have been commercialized, the cost of parts increases.

Although there are many more reliable connectors for connecting the whip antenna 2, such connectors are costly in terms of component parts and require much labor for mounting to the wiring board 10. It becomes like this.

SUMMARY OF THE INVENTION An object of the present invention is to provide an electronic control unit which does not require an independent connector for antenna connection, can be easily mounted, and has a highly reliable vehicle control receiving antenna connection structure. That is.

[0009]

SUMMARY OF THE INVENTION The present invention provides an electronic control unit for controlling a vehicle by receiving a radio wave from a transmitter operated by an operator, wherein the electronic control unit comprises a box-shaped case. A connector provided on the side surface, a wire harness for vehicle control signal input / output provided outside the case and having one end connected to the connector, and a wire harness provided outside the case and connected to the connector together with the wire harness at one end. A receiving antenna formed of one conductive wire, a receiving circuit provided in the case for processing a received signal from the receiving antenna, and a signal provided in the case for processing a signal input / output via the wire harness And a control circuit provided outside the case and responsive to each output of the receiving circuit and the input / output circuit. A system connected to the control circuit via the output circuit and connector, an electronic control device, characterized in that through the connector and the receiving circuit from the receiving antenna comprising from driving system and to the control circuit.

[0010]

According to the present invention, the electronic control unit inputs and outputs signals for vehicle control via a wire harness connected by a connector. A radio wave receiving antenna for remote control is also connected to the electronic control unit via the connector. This eliminates the need for an independent connector for connecting the antenna to the electronic control device, simplifies the connection between the antenna and the electronic control device, and improves reliability.

[0011]

FIG. 1 shows the appearance of an embodiment of the present invention. The lead antenna 22 is connected to the electronic control device 21 via a connector 27. The lead antenna 22 is
An antenna in which one conductive wire is extended. Connector 2
Reference numeral 7 is provided on the side surface of the case as in FIG. 4 and as apparent from FIG. The case is box-shaped, as described above in connection with the prior art. The wire harness 28 and the lead antenna 22 are provided outside the case.

FIG. 2 shows a state in which the electronic control unit 21 and the lead antenna 22 shown in FIG. The electronic control unit 21 is installed below the front seat 31 of the vehicle 30. Tip 2 of lead antenna 22
2a is pulled up from the lower side of the rear seat 32 along the backrest. The front end 22a of the lead antenna 22 is
Cover with 2 cover so that it is not visible from outside. The middle part of the lead antenna 22 is put on the floor plate 33.

Such an electronic control unit 21 includes a vehicle 30
Can be remotely controlled by a transmitter 34 from outside.
The transmitter 34 is provided with a push button 35. When the operator presses the push button 35, a radio wave is transmitted from the transmitter 34. The transmitted radio wave is received by the tip 22 a of the lead antenna 22 and becomes an input signal of the electronic control device 21.

FIG. 3 shows the electrical configuration of the embodiment shown in FIG. A control circuit 40 including a microcomputer and an external input / output circuit 4 are provided in a case of the electronic control unit 21.
1 and a receiving circuit 42 for processing a signal received from the lead antenna 22. The lead antenna 22 and the wire harness 28 are integrally connected via a connector 27. Thus, the inside of the case is controlled by the control circuit 40 from the wire harness 28 via the connector 27 and the input / output circuit 41.
Connected to the receiving antenna 22 and the connector 27
And a system connected to the control circuit 40 via the receiving circuit 42.

In the connector 27, for example, similarly to the connector 7 in FIG. 5, the lead for connecting to the wiring board can be lengthened to prevent the flux from rising. Prevention of such a rise in the flux is also necessary for securely connecting the electronic control device 21 and the wire harness 28. According to the present embodiment, the connection to the wire harness 28 and the lead antenna 22 can be reliably performed by taking sufficient measures for one connector 27.

In this embodiment, a radio wave for remote control uses a radio wave specified in the United States or the like as a so-called weak radio wave in the 300 MHz band, for example. According to the experiment of the present inventor, it has been found that even the simple lead antenna 22 can secure a radio wave receiving distance equal to or longer than that of the conventional whip antenna 2 shown in FIG. This reception distance is approximately 30 to
40m. According to the lead antenna 22 in this embodiment, only one terminal of the connector 27 is used, and the configuration is simple, so that the cost of the antenna can be reduced.

[0017]

As described above, according to the present invention, the vehicle control receiving antenna is connected to the side of the case of the electronic control unit together with the wire harness by the connector, whereby the inside of the case is connected from the wire harness to the connector and the input / output circuit. And a system connected from the receiving antenna to the control circuit via the connector and the receiving circuit, so that the connection is simplified and can be performed reliably. it can. In addition, since it is not necessary to prepare an independent connector for connecting the antenna, the number of parts can be reduced, and by using a highly reliable connector for the wiring harness, the connection with the antenna can be reduced. Reliability can also be improved.

[Brief description of the drawings]

FIG. 1 is a schematic plan view of an embodiment of the present invention.

FIG. 2 is a schematic side view showing a state where the lead antenna 22 shown in FIG. 1 is mounted on a vehicle 30.

FIG. 3 is a block diagram showing an electrical configuration of the embodiment shown in FIG. 1;

FIG. 4 is a plan view showing a connection structure of a conventional vehicle control receiving antenna.

5 is a schematic side view showing a structure for mounting a jack 9 for connecting an antenna to the electronic control device 1 shown in FIG. 4;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 21 Electronic control apparatus 22 Lead antenna 22a Tip 27 Connector 28 Wire harness 30 Vehicle 31 Front seat 32 Rear seat 33 Floor plate 34 Transmitter 40 Control circuit 41 Input / output circuit 42 Receiving circuit

Claims (1)

(57) [Scope of request for utility model registration] 1. An electronic control device for controlling a vehicle by receiving radio waves from a transmitter operated by an operator, wherein the electronic control device comprises a box-shaped case, a connector provided on a side surface of the case, and a case. A wire harness provided outside and having one end connected to the connector for vehicle control signal input / output; and a receiving wire provided outside the case and having one end connected to the connector together with the wire harness at one end. An antenna, a receiving circuit provided in the case for processing a signal received from the receiving antenna; an input / output circuit provided in the case for processing a signal input / output via the wire harness; And a control circuit responsive to each output of the receiving circuit and the input / output circuit. An electronic control unit, characterized in that consists of a system connected to the control circuit, system and connected to the control circuit via the connector and the receiver circuit from the receiving antenna through.