JP2528821Y2 - Wiring connection structure of meter case - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wiring connection structure of a meter case, and in particular, it is possible to reliably prevent unnecessary short-circuit of an FPC board disposed in a meter case of an automobile combination meter. The wiring connection structure of the meter case.

[0002]

2. Description of the Related Art In general, a flexible printed wiring board (FPC board) in which a desired electric wiring pattern is formed on a flexible synthetic resin sheet is often used. Even if there is some unevenness in the mounting place, it can be relatively flexed and mounted, and is used, for example, for wiring on the rear side of an automobile combination meter.

In this kind of vehicle combination meter, a desired instrument unit such as a speedometer unit is disposed inside a meter case formed of a synthetic resin, and a predetermined meter unit is provided on the rear side of the meter case. An FPC board on which a desired wiring pattern for transmitting a measurement signal to the instrument unit is provided.

FIG. 3 shows the structure of such a conventional meter case. A meter (not shown) such as a speedometer is provided inside a meter case 1 of a box-shaped vehicle combination meter having an open front side. A unit is built in, and a dial (not shown) provided with a predetermined scale or the like for indicating a position indicated by a pointer driven by the meter unit is disposed on the front side of the meter unit.

On the back of the meter case 1, there is provided an FPC board 2 on which a desired wiring pattern for transmitting a predetermined measurement signal to the meter unit is formed. The portion is provided with a positioning hole 3 for arranging the FPC board 2 at a predetermined position. Also, on the back of the meter case 1, the FP
Positioning projection 4 engaged with positioning hole 3 of C board 2
Is formed on the rear surface of the meter case 1, and an engagement hole 5 is formed in the rear surface of the meter case 1 for engaging a connector of a wire harness (not shown) for transmitting a predetermined measurement signal.
Further, a part of the FPC board 2 extends to the engaging hole 5, and the extending part of the FPC board 2 includes
A plurality of terminal plates 6 connected to the terminals of the connector are formed.

In the above-mentioned conventional combination meter, a predetermined measurement signal such as the speed of an automobile is sent to the FPC board 2 via a connector by a wire harness, and the meter unit is driven based on the measurement signal to operate the hands. By doing so, the measured amount is visually recognized.

On the other hand, in recent automobiles, there are a plurality of variations even for the same vehicle type. As a result, in the above-described automobile combination meter, there are many meter cases 1 which are the same but have different internal structures. I have. For this reason, conventionally, the meter case 1 and the FPC board 2 are commonly formed, and when it is necessary to connect a predetermined measuring unit to the FPC board 2 according to variations, a connector is connected to the terminal plate 6 of the FPC board 2. Is connected, and when it is not necessary to connect a predetermined measuring unit to the FPC board 2, the connector is not connected, so that various variations can be accommodated.

However, when the connector is not connected and the terminal plate 6 of the FPC board 2 is exposed, a short circuit occurs due to the contact of the conductor with the terminal board 6 and the FPC board 2 Conventionally, there is a risk of damage or malfunction of the instrument unit, etc.
As shown in FIG.
By attaching the insulating tape 7 so as to cover the portion and the portion of the engagement hole 5, the occurrence of short-circuit or the like of the terminal plate 6 is prevented.

[0009]

However, in the conventional wiring connection structure for a meter case, the terminal plate 6 of the unnecessary FPC board 2 formed on the meter case 1 is covered with an insulating tape 7 to insulate it. Is performed, the insulating tape 7 is peeled off or damaged.
There is a disadvantage that the terminal board 6 of the PC board 2 is exposed and a short circuit of the FPC board 2 is likely to occur. Since the work of pasting the insulating tape 7 to each other is necessary, the connection work of the wiring is extremely troublesome,
There is a disadvantage that the material cost is increased by the insulating tape 7.

The present invention has been made in view of the above points, and can prevent unnecessary exposure of a terminal board of an FPC board without using an insulating tape, and can reliably prevent occurrence of a short circuit of the FPC board. It is an object of the present invention to provide a wiring connection structure for a meter case.

[0011]

In order to achieve the above object, a wiring connection structure for a meter case according to the present invention is provided in a box-shaped vehicle combination meter having a predetermined meter unit and a dial disposed therein. the predetermined measurement signal to the back of the meter case is disposed the FPC board desired wiring pattern is coated form for sending to the meter unit, a connector for sending a predetermined measurement signal to a portion of the FPC board In the wiring connection structure of the meter case formed by forming a terminal plate to be connected , the wiring pattern is exposed ,
On the back of the meter case, a board insertion groove is formed for accommodating the terminal board portion of the FPC board by bending the board.
The exposed wiring pattern part of the terminal board by the groove
It is characterized by being hidden from the outside of the meter case .

[0012]

According to the present invention, when a combination meter for an automobile is used in various variations, when it is not necessary to connect a predetermined measuring section to the FPC board according to the variation, a terminal board not using the FPC board is used. The terminal portion of the FPC board is exposed by accommodating the bent portion in the board insertion groove of the meter case.
The exposed wiring pattern is exposed outside the meter case.
Since the terminal plate portion is insulated by preventing it from being damaged, the terminal plate portion of the FPC board is not exposed due to peeling or breakage of the insulating tape as in the related art, Unnecessary short-circuiting of the unnecessary terminal plate portion of the FPC board can be reliably prevented.

Further, since it is not necessary to prepare an insulating tape as in the prior art and to attach the insulating tape, connection and disconnection of wiring can be performed extremely easily, and furthermore, material cost is reduced. Reduce, easily and
It can be manufactured at low cost.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 and 2 show an embodiment of a wiring connection structure of a meter case according to the present invention, in which a predetermined dial plate corresponding to an instrument unit such as a speedometer and a pointer driven by the instrument unit is provided. A desired wiring pattern for transmitting a predetermined measurement signal to the meter unit is formed on the back surface of the meter case 1 of the vehicle combination meter (both not shown), and a positioning hole is partially formed. An FPC board 2 on which a FPC board 3 is drilled is provided. A positioning projection which is engaged with a positioning hole 3 of the FPC board 2 and holds the FPC board 2 at a predetermined position is provided on the back surface of the meter case 1. 4 are formed to protrude.

On the back of the meter case 1, there is formed an engagement hole 5 for engaging a connector of a wire harness (not shown) for transmitting a predetermined measurement signal. In the vicinity of the engagement hole 5 on the side where the FPC board 2 is provided, a wiring pad (not shown in FIG. 1) formed at the tip of the FPC board 2 and connected to the connector .
A board insertion groove 8 for accommodating and concealing the portion of the terminal plate 6 where the turn is exposed is formed.

Next, the operation of this embodiment will be described.
In this embodiment, a predetermined measurement signal such as the speed of an automobile is transmitted to the FPC board 2 via a connector by a wire harness.
The measured amount is visually recognized by driving the meter unit based on the measurement signal and operating the pointer.

When the combination case for an automobile is used in various variations by forming the meter case 1 and the FPC board 2 in common, it is necessary to connect a predetermined measuring section to the FPC board 2 according to the variation. The terminal board 6 of the FPC board 2
Extending into the engaging hole 5 of the case 1, the inner wall of the engaging hole 5
And the wiring pattern of the FPC board 2 is exposed.
The exposed terminal plate 6 is exposed inside the engagement hole 5 so as to be exposed.
In this state, a connector of a wire harness is inserted into the engagement hole 5 of the meter case 1 and the connector is connected to the terminal plate 6 of the FPC board 2.

On the other hand, when it is not necessary to connect a predetermined measuring unit to the FPC board 2, various connectors can be connected without connecting a connector.
By bending the unused terminal plate 6 portion of the substrate 2 and accommodating the terminal plate 6 portion in the substrate insertion groove 8 of the meter case 1, the exposed wiring pattern portion of the terminal plate 6 can be removed.
The terminal board 6 is exposed by being concealed in the board insertion groove 8.
The exposed wiring pattern is exposed outside the meter case 1.
In this case, the terminal plate 6 is insulated.

Therefore, in this embodiment, the wiring pattern
Of the terminal plate 6 of the FPC board 2 with the
The terminal plate 6 into the board insertion groove 8 of the meter case 1
The terminal plate 6 that is not used can be folded and accommodated.
Hiding the exposed wiring pattern inside the substrate insertion groove 8
To prevent the meter case 1 from being exposed outside
However, since the unnecessary portion of the terminal plate 6 of the FPC board 2 is insulated, the terminal plate 6 portion of the FPC board 2 may be exposed due to peeling or breakage of the insulating tape as in the related art. Therefore, occurrence of an unnecessary short circuit at the terminal plate 6 of the FPC board 2 can be reliably prevented.

Further, since it is not necessary to prepare an insulating tape as in the prior art and to attach the insulating tape, the work of connecting and disconnecting the wiring can be performed very easily, and the material cost is reduced. Reduce, easily and
It can be manufactured at low cost. The present invention is not limited to the above embodiment, but can be variously modified as needed.

[0021]

As described above, the wiring connection structure of the meter case according to the present invention is such that the unused terminal plate portion of the FPC board is bent and accommodated in the board insertion groove of the meter case. Terminal board part of the above FPC board
Of the exposed wiring pattern outside the meter case
Because the terminal board is insulated by preventing it from being exposed, the terminal board of the FPC board is not exposed, and short-circuiting of the terminal board is reliably prevented. Can be.

Further, since it is not necessary to prepare an insulating tape as in the prior art and to attach the insulating tape, connection and disconnection of wiring can be performed extremely easily, and furthermore, the cost of material is reduced. Reduce, easily and
This has the effect that it can be manufactured at low cost.

[Brief description of the drawings]

FIG. 1 is a partial perspective view showing one embodiment of a wiring connection structure of a meter case according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is a partial perspective view showing a conventional wiring connection structure of a meter case.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Meter case 2 FPC board 3 Positioning hole 4 Positioning protrusion 5 Engagement hole 6 Terminal plate 7 Insulating tape 8 Board insertion groove

Claims (1)

(57) [Scope of request for utility model registration] A desired wiring pattern for sending a predetermined measurement signal to the meter unit is provided on the back of a meter case of a box-shaped vehicle combination meter in which a predetermined meter unit and a dial are disposed. Coated F
The above-mentioned wiring pattern in which a PC board is provided, and a connector for transmitting a predetermined measurement signal is connected to a part of the FPC board.
In the wiring connection structure of the meter case made by forming a terminal plate to expose the over down, the back surface of the meter case, to form a board insertion groove for accommodating by bending the terminal board portion of the FPC board, the Wiring pattern with the terminal board exposed by the board insertion groove
Around the meter case from the outside of the meter case.
A meter case wiring connection structure.