JPH07181063A - Instrument unit - Google Patents

Abstract

PURPOSE:To utilize a structure where a printed board is housed in an instrument case effectively. CONSTITUTION:The instrument unit comprises a box-like first case body 3 having open rear side, a second case body 4 closing the open rear side of the first case body 3, a fuel gauge 2 housed in an instrument case formed of the case bodies 3, 4, and a flexible printed board 5 disposed along the bottom wall of the second case body 4 and forming a power supply path for the fuel gauge 2, wherein the side wall of the instrument case is entirely formed of the side wall of the first case body 3. The inner unit 201 of the fuel gauge 2 is connected electrically with the flexible printed board 5 through a screw 9 being driven into the inner unit 201 while penetrating the second case body 4 from the outside thereof.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument device to which a printed circuit board is applied as a power feeding means.

[0002]

2. Description of the Related Art Conventionally, there is known an instrument device to which a printed circuit board is applied as a power feeding means, and JP-A-61-68.
In Japanese Patent No. 515, in order to prevent water, dust, and the like from adhering to the printed circuit board, it is proposed to store the printed circuit board inside the instrument case.

[0003]

However, the above publication merely proposes to store the printed circuit board inside the instrument case, and a structure relating to the assembly of the printed circuit board accommodated in the instrument case, Further, details such as a structure relating to electrical connection between the electric component and the printed circuit board are not taught.

Therefore, the present invention is not limited to simply storing the printed circuit board inside the instrument case, but it is an object of the present invention to effectively utilize the configuration for storing the printed circuit board inside the instrument case.

[0005]

According to the present invention, as described in claim 1, there is provided a box-shaped first case body having a display portion on the front surface and an opening on the rear surface, and the first case body. Of the second case body, a second case body that closes the open rear surface of the second case body, a display means that is housed in an instrument case formed by these case bodies, and that performs various displays on the display unit, and a second case body of the second case body. A printed circuit board that is arranged along a bottom wall and forms a power supply path to the display means, wherein a half or less of a side wall of the measuring case formed by the first and second case bodies is provided. Is provided by the side wall of the second case body.

As described in claim 2, it is preferable that all of the side walls of the instrument case are formed by the side walls of the first instrument case. Further, the present invention provides claim 3
And a second case body having a display part on the front surface and having a rear surface opened, and a second case body closing the opened rear surface of the first case body. It is stored in the instrument case formed by the case body,
Display means for performing various displays on the display unit;
In the instrument device provided with a printed circuit board arranged along the bottom wall of the case body and forming a power feeding path to the display means, an open power feeding portion is formed at the bottom of the display means. The power supply section and the wiring section of the printed circuit board corresponding to the power supply section are fixed to the second instrument case, and are connected by a metal terminal protruding from the printed circuit board side to the front surface. A measuring instrument device is provided.

[0007]

According to the invention described in claim 1, the side wall of the second case body occupies less than half of the side wall of the entire instrument case, and therefore the printed circuit board is housed in the instrument case. Regarding the side wall of the instrument case, which becomes an obstacle in the case, the side wall of the second instrument case is smaller than the side wall of the first instrument case. For this reason, the printed circuit board can be arranged more easily in the second instrument case than in the first instrument case, and good assembling to the second case body can be obtained.

According to the second aspect of the present invention, since the side wall of the entire instrument case is formed only by the side wall of the first instrument case, the second instrument case does not have the side wall, and thus the better assembling property is obtained. Obtainable. According to the invention of claim 3, the power supply terminal of the display device and the wiring of the printed circuit board can be connected by the metal terminal, and the display device can be positioned with respect to the second instrument case. Therefore, good assembling property can be obtained.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. 1 is an exploded perspective view of a vehicle instrument device, FIG.
Is a front view thereof, and FIG. 3 is a sectional view thereof. Based on these drawings, first, the configuration of the measuring instrument device according to the first embodiment will be described.

The speedometer (display means) 1 is an internal unit 1
01, scale plate 102, and pointer 103. The inner unit 101 is of a type that is mechanically driven by a cable connected to wheels. The fuel gauge (display means) 2 includes an internal unit 201 and a scale plate 2.
02 and a pointer 203. Internal machine 20
1 is of a type electrically driven by a signal from a fuel sensor (not shown).

The speedometer 1 and the fuel gauge 2 are housed in an instrument case formed by a first case body 3 and a second case body 4 made of an insulating material such as resin. The first case body 3 is formed in a box shape having an open rear surface, and the front surface thereof has an opening portion (display portion) 3 corresponding to the scale plate 102 of the speedometer 1.
01 and an opening portion (display portion) 302 corresponding to the scale plate 202 of the fuel gauge 2, both scale plates 102,
202 is visible. In addition, the first case body 3
A display lens (display unit) 303 that indicates an operating state of a direction indicator or the like is also provided on the front surface of the. First case body 3
The dustproof windshield 304 covering the front surface of the first case body 3 is fixed to the first case body 3 by an adhesive material.

The second case for closing the rear surface opening of the first case body 3
The case body 4 is integrally formed with a fixing pin 401 protruding inward. The fixing pin 401 penetrates (press-fits) into a flexible printed circuit board (hereinafter, referred to as “FPC”) 5 arranged along the bottom wall 402 of the second case body 4 to insert the FPC 5 into the second case body 4. Fixed to. Further, as shown in detail in FIG. 4, the second case body 4 is integrally formed with a valve mounting portion 403 protruding outward. An electrode accommodating portion 404 is formed in the valve mounting portion 403. In the electrode accommodating portion 404, a part of the wiring of the FPC 5 and a positive electrode for contacting the wiring and electrically conducting are formed. Two terminals 601 and 602 for the negative electrode
And are stored. In the valve (display means) 7, the electrode parts 701 and 702 are inserted (press-fitted) into the electrode housing part 404, and the FPC is inserted through the terminals 601 and 602.
It is electrically connected to the wiring 5 and is fixed to the second case body 4.

Screw 8 and screw (metal terminal)
9 is attached from the outside of the bottom plate 1 through the second case body and screwed into the inner units 101 and 201, respectively.
The inner units 101 and 201 are fixed to the second case body 4. A part of the FPC 5 is arranged so as to be folded back from the inner side to the outer side in a portion where the screw 9 on the outer side of the second case body 4 is mounted.
The wiring to 01 is arranged. And screw 9
Is connected to this wiring and the power supply terminal of the internal unit 201,
It also achieves electrical continuity.

On the other hand, the second case body 4 is integrally formed with an external connection connector 405 which projects inward, opposite to the valve mounting portion 403. On the other hand, FPC5
The wiring part that is electrically connected to the outside is taken out from the inside to the outside of the second case body 4 through the through hole 406 of the second case body 4. Then, the extracted wiring portion is housed in the external connection connector 405, and is electrically connected to the outside collectively via the jack (see FIG. 4) of the wire harness 10 attached to the external connection connector 405. It is possible. A valve holder 407 is also integrally formed with the second case body 4.

As described above, since the FPC 5 is housed in the instrument case, as shown in FIG. 5, behind the instrument case,
Even if in-vehicle components such as the wire harness 10, the link hose 11, the duct 12, and the instrument panel 13 are arranged close to each other, it is possible to prevent them from interfering with the FPC 2. Further, the side wall of the instrument case is formed by the side wall 305 of the first case body 3, and F
Since the second case body 4 in which the PC 5 is arranged is formed into a flat plate shape without a side wall at the outer edge thereof, the FPC 5 can be easily attached and the assembling property is excellent.

FIG. 5 shows a second embodiment. This second
The embodiment is different from the above-described first embodiment in a conductive structure between the electrically driven inner unit 110 and the FPC 5 and a fixing structure between the inner unit 110 and the second case body 4. There is. The parts corresponding to the parts shown in the first embodiment are designated by the same reference numerals, and the description thereof will be omitted. That is, the conductive pin (metal terminal) 14 protruding inward is fixed to the second case body 4.
The FPC wiring is connected to 4. This conduction pin 1
4 is press-fitted into a terminal (not shown) provided at the bottom of the inner unit 110 to achieve electrical connection between the inner unit 110 and the FPC 5.

Further, a claw portion 407 protruding inward is integrally formed on the second case body 4, and the fixing plate 111 fixed to the inner unit 110 by engaging with the claw portion 407.
Are integrally formed. The claw portion 407 and the fixing plate 11
By engaging with 1, the inner unit 110 is fixed to the second case body 4. In addition, at the bottom of the fixed plate 111 of the internal unit 110,
The biasing member 112 is fixed, and strengthens the connection between the claw portion 407 and the fixed plate 111. The internal unit 110 is for a speedometer, and it has a scale 113, a pointer 11
4 composes a speedometer.

With the above structure, by simply mounting the inner unit 110 on the second case body 4, electrical connection between the inner unit 110 and the FPC 5 and fixing of the inner unit 110 to the second case body 4 can be achieved. This can be achieved at the same time, and the screwing step of the screw 8 or 9 which is required in the first embodiment is not necessary, and the assembling property is excellent.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a first embodiment of the present invention.

FIG. 2 is a front view showing the first embodiment.

FIG. 3 is an enlarged view of a valve mounting portion.

FIG. 4 is a perspective view for explaining the operation of the first embodiment.

FIG. 5 is an exploded perspective view showing a second embodiment of the present invention.

[Explanation of symbols]

 1 Speed Meter (Display Means) 2 Fuel Gauge (Display Means) 3 First Case Body 4 Second Case Body 5 Flexible Printed Circuit Board 7 Valve (Display Means) 8 Screw 9 Screw (Metal Terminal) 14 Conduction Pin (Metal) (Made terminal)

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Masaya Tsuji, 1-1, Showa-machi, Kariya city, Aichi Prefecture, Nihon Denso Co., Ltd. (72) Inventor, Masato Terazawa, 1-1, Showa-cho, Kariya city, Aichi prefecture Sozo Co., Ltd.

Claims (3)

[Claims] 1. A box-shaped first case body having a display portion on the front surface and having an open rear surface, a second case body closing the open rear surface of the first case body, and these cases. A display means which is housed in an instrument case formed by the body and which performs various displays on the display section, and which is arranged along the bottom wall of the second case body to form a power supply path to the display means. And a printed circuit board for performing the measurement, wherein the side wall of the second case body occupies less than half of the side wall of the instrument case formed by the first and second case bodies. apparatus. 2. The instrument device according to claim 1, wherein all side walls of the instrument case are formed by side walls of the first case body. 3. A box-shaped first case body having a display portion on the front surface and having an open rear surface, a second case body closing the open rear surface of the first case body, and these cases. A display means which is housed in an instrument case formed by the body and which performs various displays on the display section, and which is arranged along the bottom wall of the second case body to form a power supply path to the display means. In a measuring device including a printed circuit board, a power supply section having an opening is formed at a bottom portion of the display means, and the power supply section and a wiring section of the printed circuit board corresponding to the power supply section, Fixed to the second instrument case,
An instrument device characterized in that the terminals are made of metal and project from the printed board side to the front side.