JP3052308B2 - Vehicle instrumentation - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle instrument system, and more particularly to a vehicle instrument system capable of reducing costs.

[0002]

2. Description of the Related Art In recent years, various electrical components such as an illuminated entry system, a defogger timer, a seatbelt alarm, a warning to forget to turn off a light, a warning to forget to remove a key, a power door lock, and a keyless entry system have been installed in various parts of a vehicle. These electrical components are independently distributed, and are electrically connected to a meter unit installed in front of the driver's seat, controlled by a system such as a microcomputer in the meter unit. The detected state of the vehicle is displayed on a meter unit as necessary (for example, see Japanese Patent Application Laid-Open No. 7-203553).

[0003] As a means of reducing costs, it is conceivable to integrate electric components which are independently and separately arranged. However, the required electric components are different in combination depending on the destination and grade of the vehicle. Simply integrating the electrical components according to each combination increases the number of variations and cannot expect a significant cost reduction effect.

Japanese Patent Laid-Open Publication No. Hei 6-276571 discloses a multiplex transmission device for an electric system of a vehicle.
Conventionally, there has been disclosed a device in which an integrated electrical component (electric component) and a multiplex transmission device are separated from each other. However, since the individual components can be separately developed and manufactured, the electrical component and the multiplex transmission device are separated. Although there is an effect that it is not necessary to increase the total number of device numbers, even with such a configuration, it is still not possible to sufficiently cope with the reduction in the number of variations.

[0005]

Therefore, the inventors of the present application classify and integrate electrical components other than the meter unit into a plurality of types to form an electrical component unit, and attach / detach the electrical component unit to / from the meter unit. The meter unit is provided with a control unit for controlling the electrical component unit and a power supply unit for supplying power to the electrical component unit, and controls and supplies power to the electrical component unit. It has been proposed that the supply is performed through the attaching / detaching means (Japanese Patent Application No. 8-227256).
Nos. 8-250752 and 8-331938, hereinafter referred to as a prior application).

The present invention is a further improvement of each of the above-mentioned prior applications, and aims at further reducing costs.

[0007]

According to the present invention, a meter block including a control unit for controlling display and a power supply unit for supplying power to each unit is used as a reference for assembling the meter unit. The electronic component is mounted on a printed circuit board provided with predetermined electric wiring as a member, and electrical components other than the meter block are classified and integrated into a plurality of types and mounted on the substrate as an electrical component unit . Keyless
Entry system receiver, flasher relay
-Each circuit is connected to the wiring board via detachable means as a single electrical component unit , and other electrical components are appropriately classified and connected directly to the wiring board as a collective electrical component unit grouped into several groups It is.

[0008] Further, a pattern is printed on the substrate to enable the soldering and fixing connection of the collective electrical component unit directly, and a connector is provided as a detachable means for detachably attaching the single electrical component unit .

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A function-integrated meter unit 1 includes a display unit 2, a printed circuit board 3 provided with predetermined electric wiring serving as a reference member for assembling the meter unit 1, and selectively at a predetermined position on the printed circuit board 3. the physical and electrical connection self-contained set electric component unit to be made 4,5, external type printing substrate 3 to physical and electrical connection is made to a predetermined position of the selectively printed board 3 alone electrical Product unit 6.

[0010] A type approval procedure is required, such as a display section that requires a different design depending on the vehicle, or a receiver section of a keyless entry system, or it can be replaced during use, such as a relay circuit of a flasher. Electrical components with strong uniqueness, such as
These are connected to the wiring board 3 via the input / output port 7 by forming the indicating unit 2 (one of the individual electric component units ) or the individual electric component unit 6. On the other hand, other electric component by a set electric component unit 4,5 summarized into several groups by classifying appropriately according to the destination and grade of a vehicle, a set <br/> electric component unit 4, 5 is directly fixedly connected to the printed circuit board 3 on which the pattern provided when the device 5 is fully equipped, without passing through the input / output port 7.

With this configuration, the number of input / output ports 7 can be significantly reduced as compared with the above-mentioned prior application, thereby realizing cost reduction.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on embodiments shown in the accompanying drawings.

FIG. 1 is a block diagram for explaining the overall configuration. 1 is a function-integrated meter unit, 2 is a display unit, 3 is a printed circuit board provided with a predetermined electric wiring serving as a reference member for assembling the meter unit 1, and 4 and 5 are selectively located at predetermined positions on the printed circuit board 3. physical and self-contained sets electric component unit that electrical connection is made, 6 selectively printing substrate 3
Is a single electrical component unit external to the printed circuit board 3 where physical and electrical connections are made at predetermined locations. In addition,
The display unit 2 and the single electrical component unit 6 are connected to each other via an input / output port 7 which also functions as a detachable unit having a plug-in connection structure such as a connector provided on the printed circuit board 3.

The display section 2 is detachable so that a design corresponding to a vehicle to be mounted can be used. As shown in FIG. 2, in the case of a digital type, the display unit 2 includes a liquid crystal display member 221 and a driver circuit 22 for driving the same.
2 and a lighting unit 223 formed of a light emitting member such as a lamp or a light emitting diode for illuminating a predetermined alarm display or the liquid crystal display member 221.

Alternatively, in the case of the analog type, as shown in FIG. 3, a pointer indicating type instrument 231 such as a cross-coil type instrument or a stepping motor type instrument, a driver circuit 232 for driving the instrument, a predetermined alarm display and an instrument 231 are provided. An illumination unit 233 made of a light-emitting member such as a lamp or a light-emitting diode is provided for illumination.

Regardless of digital or analog type,
The display unit 2 is similar to a single electrical component unit 6 described later.
Single electrical component unit that does not include functions other than display unit 2
It is configured as one of the following.

The printed circuit board 3 includes the collective electrical component units 4 and 5
Are printed in a pattern provided when the device is fully equipped, and the connection terminals (not shown) of this pattern and the connection terminals (not shown) of the collective electrical component units 4 and 5 are directly soldered or the like. Fixed connection.

The printed circuit board 3 includes a meter block 8.
And a built-in control unit 9 composed of a microcomputer (microcomputer) for controlling display on the display unit 2 and a power supply unit 10 for supplying power to each unit.
Is connected to a vehicle-mounted battery (not shown) via the input / output port 7.

The collective electrical component units 4 and 5 are classified and integrated with an illuminated entry system, a defogger timer, a power door lock, a keyless entry system, and the like, and the combination method and configuration are the same as those of the above-mentioned prior application. Details are omitted.

The independent electrical component unit 6 includes electrical components that are preferably provided independently. In this embodiment, the single electrical component unit 6 is a receiver (RF) unit 61 of a keyless entry system. In the case of a radio keyless entry system, it is necessary to obtain a type approval in accordance with the regulations on radio waves in each country, and the receiver unit 61 is used together with other components of the keyless entry system in the collective electrical component unit 4 (or collective electrical component). Integrating with the component unit 5) and putting it inside the meter unit 1 means that the collective electrical component unit 4 (or the collective electrical component unit 5) is prepared for each country having a different type, and the collective electrical component unit 4 (or It is necessary to receive the certification work for each collective electrical component unit 5), which leads to an increase in cost, and is aimed at avoiding this.

Further, as the more desirable electrical component provided independently, electrical equipment with interchangeability in the middle using a vehicle meter device, for example, a relay circuit or the like of the flasher. These have to be replaced a little in view of the durability of the electrical components, and are unique electrical components compared to the collective electrical component units 4 and 5.

That is, a type approval procedure is required as in the case of a display unit that requires a different design according to the vehicle, or a receiver unit of a keyless entry system, or
Unique electrical components , such as a flasher relay circuit that can be replaced during use, are unitized separately
Then, by using the display unit 2 or the single electrical component unit 6 ,
These are connected to the wiring board 3 via the input / output port 7. On the other hand, other electrical components are appropriately classified according to the destination, grade, and the like of the vehicle, and are grouped into several groups (two groups in this embodiment) to form the collective electrical component units 4 and 5, so that direct wiring is possible. It is connected to the substrate 3 without passing through the input / output port 7. With such a configuration, the number of input / output ports 7 can be significantly reduced as compared with the above-mentioned prior application, thereby realizing cost reduction.

Further, since the number of connection points via the input / output port 7 which is easily affected by electric noise can be greatly reduced, it is possible to suppress the occurrence of malfunctions or stoppages in actual use. The reliability of the vehicle instrument system as a whole can also be improved.

[0024] The present invention is not limited to the above embodiments, for example, the number of single electrical component unit 6 set the electric component unit 4,5 or external type of built-in type, respectively 2, 1 Needless to say, it is not limited to the individual.

[0025]

According to the present invention, the number of connection points via input / output ports such as a connector, which is one of the factors of high cost, can be greatly reduced, so that the cost of a vehicle instrument device can be reduced. It becomes possible.

Further, since the number of input / output ports which are easily affected by electrical noise is reduced, it is possible to suppress the occurrence of malfunctions such as an instruction malfunction or operation stop caused by the noise.
It is also possible to improve the reliability of the vehicle instrument device.

[Brief description of the drawings]

FIG. 1 is a block diagram illustrating the configuration of an embodiment of the present invention.

FIG. 2 is a block diagram illustrating a configuration of a display unit according to the embodiment.

FIG. 3 is a block diagram illustrating a configuration of a display unit according to the embodiment.

[Description of Signs ] 1 Meter unit (vehicle instrument device) 2 Display unit (single electrical component unit) 3 Printed circuit board (reference member) 4,5 Collective electrical component unit 6 Single electrical component unit 7 Connector as input / output unit (input / output) port)

Claims (2)

(57) [Claims] 1. A meter block including a control section for controlling display and a power supply section for supplying power to each section is mounted on a printed circuit board provided with predetermined electric wiring serving as a reference member for assembling the meter unit. and, wherein a one to be mounted on the substrate as the electric component unit classifies integrates electrical components other than the meter block into a plurality of kinds, a display unit, keyless
Receiver and flasher of the entry system
Each of the circuit circuits is connected to the wiring board via a detachable means as a single electrical component unit, and the other electrical components are appropriately classified and connected directly to the wiring board as a collective electrical component unit assembled into several groups. Vehicle instrument system characterized by the above-mentioned. To wherein said substrate, said pattern to a set electronic component units allow direct soldered connection is printed, detachable means serving connector which is detachably mountable to said single electrical component unit are prepared The vehicle instrument device according to claim 1, wherein: