JP3087271B2 - FPC board connection device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an FPC board connecting device used for an instrument exposed to wind and rain, such as a motorcycle.

[0002]

2. Description of the Related Art Conventionally, in a case where a concave portion is provided in a case and an FPC board and a connector are electrically connected in the concave portion, water penetrates into a conductive portion between the FPC plate and the connector, causing poor conduction. For example, Japanese Utility Model Laid-Open Publication No. Sho 61-176785 discloses a connector in which a waterproof wall is formed around a concave portion and a connector is covered with a waterproof cover.

[0003]

However, in the above-mentioned conventional example, although waterproof walls are provided integrally with the case above and on the right and left of the case, the lower part of the case, that is, F
Since the waterproof part cannot be provided by the wiring of the FPC board on the conductive part side of the PC board and the connector and is flat, rainwater easily penetrates from between the FPC board and the waterproof cover even on the lower side of the case, Therefore, there is a possibility that a conduction failure such as a short circuit may occur. Also, due to the structure of the instrument, FP
In many cases, the C board is wired, so that a waterproof wall cannot be provided on the upper side of the case, and the same problem may occur. Further, in the second embodiment of the conventional example, since the waterproof wall and the packing are provided around the entire periphery of the concave portion, the penetration of rainwater can be prevented, but the number of parts increases because the waterproof wall and the packing are separate, Assembly is also difficult.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and an object of the present invention is to provide an FPC board connecting apparatus which has a simple structure and can prevent water from penetrating into a conductive portion between an FPC board and a connector. And

[0005]

According to the present invention, there is provided an instrument case, an FPC board disposed on a back surface of the instrument case, and a plurality of conductive portions formed on the FPC board and arranged in parallel. A connecting tongue provided with: a storage recess formed on the back surface of the instrument case to bend and store the connection tongue; a waterproof wall protruding around the entire circumference of the storage recess; A connector having a terminal which is electrically connected to a conductive portion of the connection tongue, and a connector cover which is covered with the connector and covers the waterproof wall. At least the connection tongue of the waterproof wall Abut
The waterproof wall of that point as viewed from the back of the instrument case, instrument
The connecting tongue piece is housed in the housing recess by being inclined downward or rightward or downward with respect to the horizontal direction of the case, over the inclined waterproof wall. Further, a groove is provided at the side of the storage recess side of the inclined waterproof wall.

[0006]

DETAILED DESCRIPTION OF THE INVENTION An FPC disposed on the back of an instrument case
A storage recess for storing the connecting tongues of the plate by bending is provided, and a waterproof wall is projected around the entire circumference of the storage recess. At this time,
The waterproof wall over which the connecting tongue gets over is viewed from the back of the instrument case.
And tilt it to the lower right with respect to the horizontal direction of the instrument case . Then, the connection tongue piece is stored in the storage recess after climbing over the inclined waterproof wall. Then, the connector with the built-in terminal is inserted into the storage recess, and the connection tongue of the FPC board is electrically connected to the terminal of the connector. Since the connector is covered with the connector cover and the waterproof wall at the place where the connecting tongue of the FPC board gets over is inclined, water adhering to the back of the case or the FPC board flows down the inclined waterproof wall. An FPC board connecting device in which water does not penetrate into the conductive portion and the terminal of the connecting tongue in the storage recess.

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described based on an embodiment.
FIG. 3 is a partial perspective view of the back side of the instrument case as viewed from below. An FPC board 2 is disposed on the back of an instrument case 1 made of synthetic resin. The instrument case 1 is provided with a storage recess 5 for folding and storing a connecting tongue 4 provided with a plurality of conductive portions 3 formed on an FPC board 2, and is integrated with the instrument case 1 around the entire circumference of the storage recess 5. Of the waterproof walls 6 and 6A are projected.
At this time, the waterproof wall 6 over which the connecting tongue 4 of the FPC board 2 gets over
A is a horizontal view of the instrument case 1 when viewed from the back of the instrument case 1.
It shall be inclined to the right with respect to the direction . Then, the connecting tongue piece 4 is stored in the storage recess 5 over the inclined waterproof wall 6A. A groove 7 is provided in a range wider than the width of the connecting tongue piece 4 on the side of the storage recess 5 of the waterproof wall 6A,
A pin 8 for fixing the connecting tongue 4 is projected from the bottom of the storage recess 5, and one end of the connecting tongue 4 is engaged and fixed to the pin 8.

When the connector 10 having the terminal 9 is inserted into the housing recess 5 and mounted, the conductive portion 3 of the connecting tongue 4 and the terminal 9 of the connector 10 are electrically connected to each other. The connector 10 is covered with a connector cover 11 formed of an elastic member. The connector 10 is configured to cover the outer periphery of the waterproof walls 6 and 6A when the connector 10 is inserted into the housing recess 5 and mounted.

[0009] In FPC board connecting device constructed in this manner, it takes water by rainwater or wash the rear surface of the instrument case 1, even if water adheres in the FPC board 2 and the connector cover 11, water It does not flow down the FPC board 2 or the connector cover 11 and penetrate into the conductive portion 3 of the connecting tongue 4 and the terminal 9 of the connector 10. Also, the instrument case
Water has adhered to the waterproof wall 6A between the switch 1 and the FPC board 2.
Even when the waterproof wall 6A is viewed from the back of the instrument case 1,
Since the water is inclined downward, the water is inclined to the waterproof wall 6A.
And flows down to the right, and the conductive part 3 and the end of the connector 10
It does not penetrate the child 9.

Also, if the water gets over the waterproof wall 6A, it is prevented.
Penetration between the storage recess 5 side wall surface of the water wall 6A and the connecting tongue 4
Even if it does, the groove is formed on the storage recess 5 side of the waterproof wall 6A.
By providing the part 7, a gap is created there,
Infiltration of the above water is prevented.

In the present embodiment, the waterproof wall 6A is inclined downward to the right as viewed from the back of the instrument case 1, but may be inclined downward to the left .

[0012]

As described above, according to the present invention, a waterproof wall is projected around the entire periphery of the storage recess for storing the connecting tongue of the FPC board formed on the back surface of the instrument case by bending it. When viewing the waterproof wall provided at least at the place where the connecting tongue abuts from the back of the instrument case , the right side with respect to the horizontal direction of the instrument case
Tilt down or left . Then, since the connecting tongue is stored in the storage recess over the inclined waterproof wall, water attached to the back side of the instrument case flows down along the inclined waterproof wall, and the conductive portion of the connecting tongue and the connector It does not penetrate into the terminal side. In addition, since the groove is provided on the storage recess side of the inclined waterproof wall, even if the water gets over the waterproof wall, the water is further provided by the groove, so that more water is supplied to the conductive portion of the connecting tongue and the terminal of the connector. Penetration to the side is prevented.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an FPC board connection device according to an embodiment of the present invention.

FIG. 2 is a cross-sectional view of a main part of the FPC board connection device showing the embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument case 2 FPC board 3 Conductive part 4 Connecting tongue 5 Storage recess 6, 6A Waterproof wall 7 Groove 9 Terminal 10 Connector 11 Connector cover

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁷ , DB name) H01R 13/52 H01R 12/28

Claims (2)

(57) [Claims] 1. An instrument case, an FPC board disposed on a back surface of the instrument case, a connecting tongue formed on the FPC board and having a plurality of parallel conductive portions, and a back face of the instrument case. A storage recess formed to store the connection tongue by bending, a waterproof wall protruding around the entire circumference of the storage recess, and inserted into the storage recess to be electrically connected to the conductive portion of the connection tongue. and a connector with a built-in terminal to, coated on the connector consists of a connector cover which covers the waterproof wall, of said waterproof walls, abutting at least the connecting tongue piece
Waterproof wall portion which as seen from the back side of the instrument case, a total of
Provided by inclined <br/> obliquely downward sloping or left edge in the horizontal direction of the vessel casing, and wherein the accommodating said connecting tongue piece housing recess overcame this inclined so waterproof wall FPC
Board connection device. 2. The FP according to claim 1, wherein a groove is provided on the inclined recessed wall on the side of the storage recess.
C board connection device.