JP2001310690A - Control unit for electric equipment of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To fix a control unit without increasing costs, to make it easy to fix the unit to a vehicle, and to improve maintainability. SOLUTION: A control unit 6 which controls lighting of headlights 3 of a vehicle is fixed in a relay box 5 disposed in an engine room 2 or in a vehicle room 8 in the same fixing method as a relay 9 disposed in the vehicle.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric component control device for controlling electric components of a vehicle.

[0002]

2. Description of the Related Art In a vehicle, a control device for controlling electric components (for example, lights) of the vehicle is provided with a TOYOTA CAMRY 1997 in order to improve appearance.
As shown on page 19 of MODEL (published by Toyota Motor Corporation in 1997), it is arranged in a place that cannot be seen from the outside (back side) such as an instrument panel in a room. In recent years, the computerization of vehicles has been advanced, and various control devices for performing vehicle control and the like have been arranged in the vehicle compartment after securing a wider space in the vehicle compartment. For this reason, the control device is installed via the mounting bracket even in a place where there is not much space.

[0003]

However, in consideration of mounting the control device in a place where there is not much space, a mounting bracket is usually required for fixing to the vehicle. If the control device is mounted on a vehicle via a bracket in a space that is narrow in space, a bracket is required for mounting, and the shape of the bracket becomes complicated, leading to an increase in cost. Also, if the control device is arranged in a complicated place to secure space, it will be difficult to assemble it to the vehicle, and if the operation of the control device is wrong, it will be difficult to perform the checking work, Maintainability deteriorates.

[0004] Therefore, the present invention has been made in view of the above-mentioned problems, and it is possible to dispose a control device without increasing the cost, to facilitate assembly to a vehicle, and to improve maintainability. That is a technical issue.

[0005]

A technical measure taken to solve the above-mentioned problem is a relay box provided in an engine room or a vehicle compartment of a vehicle and containing a relay for supplying power to electric components of the vehicle. And a control device for controlling electrical components.

According to this, the control device can be mounted on a relay box to which a relay is mounted, and no bracket is required for mounting, thereby preventing an increase in cost. Also, since the same mounting as the relay mounted on the relay box can be performed, the number of assembly steps is reduced, and the relay box is installed in the engine room or a place with good maintainability in the room, so maintenance is easy even if the control device breaks down. Is improved.

Preferably, the size of the control device is substantially equal to the size of a relay for supplying power to electrical components. By making the control device approximately the same size as the relay, it becomes possible to mount it on a relay box to which the relay can be mounted.
Brackets are not required for mounting. Therefore, an increase in cost when attaching the control device to the vehicle is prevented.

In this case, the control device can be easily mounted on the relay box by being inserted into the relay box.

[0009]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a power supply to various control devices of a vehicle (for example, a brake control device, an engine control device, a shift control device, etc.) and electric components (lamps such as a headlight 3) provided in the vehicle. FIG. 3 is a diagram showing a position where a box (herein, referred to as a relay box) 5 a in which a fuse 7 a for preventing a predetermined current or more from flowing through the relay 9 or these control devices or electric components is stored in the engine room 2. is there. FIG. 2 is a view showing that a similar relay box 5b is provided on the back side of the instrument panel 19 in the vehicle interior 8. Relay box 5 (5a, 5b) provided in such a place
Is mounted by fitting the relay 9 or the fuse 7 (7a, 7b) to the female terminal 20 provided on the relay box side, and is provided in a workable place for easy maintenance. I have.

Therefore, in the present invention, attention is paid to the relay 9 provided in the relay box 5 (5a or 5b) shown in FIG. 1 and FIG. Control device 6 for controlling (brightness)
(6a, 6b) is substantially the same size as the relay 9 and is mounted on at least one of the relay boxes 5 shown in FIGS. More specifically, the external dimensions of the control device 6 are made to conform to the size of the micro relay of the international standard ISO, so that the versatility is improved. Then, the control device is attached to the relay fitting opening in the relay box body. Can be easily detached. Thus, a configuration capable of effectively utilizing the space in the relay box, reducing the number of steps for assembling the control device 6, improving the maintainability, and reducing the cost associated with the reduction in the number of brackets holding the control device 6 can be realized.

FIG. 3 shows a specific configuration of the control device 6.
The control device 6 is configured so that the terminal 12 can be fitted to the female terminal 20 provided on the relay box side. The control device 6 has a terminal 12 formed by insert molding, supported and fixed on a U-shaped resin body 11 made of ABS resin, and a circuit board 13 provided in two grooves provided in the side direction of the resin body 11 in the arrow direction (insertion direction). Is inserted. The circuit board 13 is restricted from moving in one direction by two upper claws 11a shown in FIG. 3 provided on the resin body 11, and the terminals 12 are fixed at the upper ends by soldering.

On the circuit board, electronic circuit components (FET 16, FET 16) for lighting the head lamps 4 of the left and right head lights 3 are provided.
IC 14, capacitor 15, chip components, etc.) are mounted by surface mounting technology. Among them, the FET 16 which is a switching element at the time of circuit operation generates heat.
A heat radiating member 18 provided with a plurality of fins and made of a material having good heat radiating properties (for example, aluminum or the like) is fixed to the back surface of the circuit board at the place where the 16 is provided by screws 17.

A circuit board 13 on which these electronic components are mounted
After fixing the resin case 11 to the resin body 11, the resin case 10 is covered so as to cover other than the terminal surface, and the resin case 10 is fitted to the claw 11 b provided on the side of the resin body 11.
The control device 6 is configured.

FIG. 4 shows a circuit block diagram of the electrical component control device 1 for controlling the brightness of the headlight and a connection diagram with the outside. The control device 6 is supplied with power from a battery 21. The + terminal of the battery 21 is input to the IG terminal of the control device 6 via an ignition switch (IG SW) 23, and the battery 2
The-terminal of 1 is input to the GND terminal of the control device 6. When a vehicle key (not shown) is inserted into a key cylinder provided in the vehicle and the IG SW is turned on (closed state),
Power is supplied. The control device 6
In response to the brightness of the surroundings of the vehicle, a signal for instructing automatic dimming is input by a signal from an auto light switch or another control device for instructing automatic dimming of the headlamp 4. When the headlamp 4 connected to the output side is turned on, a high potential (H
i) is input, and when the light is turned off, a low potential (Lo) is input.

The control device 6 mainly includes a power supply circuit 31, an input circuit 32, an oscillation circuit 33, and an output circuit 34. The power supply circuit 31 regulates (10V) a battery voltage (12V) to generate the oscillation circuit 31 and the input circuit. 32 to 10
It is possible to supply a predetermined power with a stable voltage of V. When a predetermined power is supplied, the oscillation circuit 33 oscillates, and a signal in the oscillation state is transmitted to the output circuit 34, and the output circuit 3
4 can control the headlamps 4 of the left and right headlights 3 through the DRL terminal of the control device 6.

Next, the operation will be described. IG SW
When the switch 23 is turned on, a voltage is supplied from the battery 21 to the power supply circuit 31, a predetermined voltage of 10 V is supplied to the oscillation circuit 31 and the input circuit 32, and the control device 6 enters a standby state. In this state, when an operation signal is output from an external control device or an auto light switch (not shown), the state of the external signal is input to the IN terminal of the control device 6 and is input to the oscillation circuit 33 via the input circuit 32. Reportedly.
The oscillation circuit 33 receives the external signal and changes the oscillation state. As a result, the pulse signal activates a switching member (for example, FET) provided inside the output circuit 34, and changes the current amount of the headlamp 4 to PWM. The light is dimmed by adjustment by control, and the intensity of light can be adjusted.

Here, as an embodiment, a case where the present invention is applied to a known auto light system for adjusting the brightness of the headlight 3 has been described, but the present invention is not limited to this.

[0019]

According to the present invention, a control device for controlling electrical components is housed in a relay box provided in an engine room or a vehicle compartment of a vehicle and containing a relay for supplying power to the electrical components of the vehicle. The control device can be mounted on a relay box to which a relay is mounted, and no bracket is required for mounting, thereby preventing cost increase. Also, since the same mounting as the relay mounted on the relay box can be performed, the number of assembly steps is reduced, and the relay box is installed in the engine room or a place with good maintainability in the room, so maintenance is easy even if the control device breaks down. Is improved.

In this case, the control device can be easily mounted on the relay box by being inserted into the relay box.

[Brief description of the drawings]

FIG. 1 is a diagram showing a position of a relay box provided in an engine room of a vehicle.

FIG. 2 is a diagram illustrating a position of a relay box provided in a cabin of the vehicle.

FIG. 3 is a plan view of the electrical component control device according to the embodiment of the present invention.

FIG. 4 is a circuit block diagram and an external connection diagram of the electrical component control device according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 electronic component control device 2 engine room 3 headlight 4 headlamp (electric component) 5 (5a, 5b) relay box 6 (6a, 6b) control device 8 vehicle interior 9 relay

Claims (2)

[Claims] 1. A vehicle, wherein a control device for controlling the electrical components is housed in a relay box provided in an engine room or a vehicle interior of the vehicle and containing a relay for supplying power to the electrical components of the vehicle. Electrical components control device. 2. The control device according to claim 1, wherein the control device is inserted into the relay box.