JP2004171958A - Terminal structure for flexible wiring board, and mounting method for flexible wiring board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a space saving terminal structure for a flexible wiring board which can be easily plugged and unplugged with respect to a connector, and a mounting method for the flexible wiring board. <P>SOLUTION: A reinforcing plate 12 reinforcing a connection terminal of the flexible wiring board 10 and used as a holding part when the connection terminal is plugged and unplugged with respect to the connector 20 is installed in the flexible wiring board 10. The reinforcing plate 12 has a base part 12a to be used as an attachment and detachment part to the connector 20 along with an FPC end part 10a, and protrusion parts 12b and 12b protruding in a length direction of the FPC 10 to be used as holding knob parts in plugging and unplugging with respect to the connector. In the reinforcing plate 12, only a predetermined area from an outermost end part to an inner side of the connection terminal is bonded to the flexible wiring board 10. The flexible wiring board 10 is bent from an inner side of the bonding area of the reinforcing plate 12 to protrude the protrusion parts 12b and 12b, and plugging and unplugging with respect to the connector 20 are carried out by holding the protrusion parts 12b and 12b. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a terminal structure of a flexible wiring board (hereinafter, appropriately abbreviated as FPC) and a method of mounting the flexible wiring board, and particularly to an FPC inserted into a connector.
[0002]
[Prior art]
In the FPC that is used by bending a part, there is the following conventional example.
Patent Literature 1 and Patent Literature 2 disclose examples in which a bent portion is cut out so as not to be bent to form a connector attaching / detaching operation holding portion.
[0003]
[Patent Document 1]
Japanese Utility Model Publication No. 3-33982 (FIG. 1)
[Patent Document 2]
Japanese Patent Application Laid-Open No. 3-101779 (FIG. 1)
[0004]
[Problems to be solved by the invention]
However, such a conventional FPC has a structure in which an opening is formed in the FPC, so that the wiring space is small and only a thin pattern can be wired. If a thick pattern such as a power supply / GND is required, application is not possible. There was a problem that it was difficult or that the width had to be increased.
[0005]
The present invention has been made in view of such problems, and provides a terminal structure of a flexible wiring board and a mounting method of the flexible wiring board which can be easily inserted into and removed from a connector in a small space. Aim.
[0006]
[Means for Solving the Problems]
The terminal structure of the flexible wiring board according to the present invention is a terminal structure of the flexible wiring board connected to the connector of the circuit board, which reinforces the connection terminal of the flexible wiring board and serves as a holding portion when the connector is inserted and removed. A reinforcing plate is provided, and the reinforcing plate is bonded to the flexible wiring board only in a predetermined region in a length direction from an outermost end of the connection terminal.
[0007]
More preferably, the reinforcing plate has a protrusion projecting in a length direction of the flexible wiring board.
When the flexible wiring board is bent inside the bonding area of the reinforcing plate, it is more preferable that the projections protrude and serve as holding knobs for connector insertion / removal.
[0008]
The method for mounting a flexible wiring board according to the present invention is a method for mounting a flexible wiring board for connecting a connection terminal of a flexible wiring board to a connector of a circuit board. A reinforcing plate serving as a holding portion at the time of insertion / extraction is bonded to a predetermined region inward from the outermost end of the connection terminal, and the flexible wiring board is bent inside the bonding region of the reinforcing plate to form one of the reinforcing plates. The connector is characterized in that it is made to protrude, and the protruding part is held and inserted into and removed from the connector.
[0009]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, a preferred embodiment of a terminal structure and a mounting method of a flexible wiring board according to the present invention will be described in detail with reference to the accompanying drawings.
[0010]
1 to 3 are views showing a connection configuration between a flexible wiring board and a connector of a circuit board according to an embodiment of the present invention. FIG. 1 is a perspective view, FIG. 2 is a plan view thereof, and FIG. FIG. 3 is a side view of FIG. 2 when the FPC is bent.
[0011]
In FIG. 1, reference numeral 10 denotes an FPC (flexible wiring board), reference numeral 20 denotes a connector which is a harness for mounting the FPC 10, and reference numeral 21 denotes a component mounting board on which the connector 20 is installed.
[0012]
On the FPC 10, a pattern 11 that is an electric signal wiring is printed. Further, a reinforcing plate 12 is attached to an end 10a of the FPC 10 corresponding to a connection portion with the connector 20 with an adhesive 13 (see FIG. 3).
[0013]
The reinforcing plate 12 is attached to the FPC end 10 a with an adhesive 13 to reinforce the FPC 10 and also has a function as a holding portion when the connector 20 is inserted and removed.
A reinforcing plate 12 is attached to the FPC end 10a, and together with the FPC end 10a, a base 12a serving as a detachable portion to the connector 20, and a protrusion protruding in the longitudinal direction of the FPC 10 and serving as a holding knob for inserting and removing the connector. 12b, 12b.
[0014]
Since only the base 12a of the reinforcing plate 12 is fixed to the end 10a of the FPC 10 by the adhesive 13, the FPC 10 can be used by bending a part of the FPC 10 from the vicinity of the bending position shown in FIGS. In this case, the base 12a is a predetermined area in the length direction from the outermost end of the connection terminal, which is bonded to the flexible wiring board 10.
[0015]
Hereinafter, a method of mounting the FPC 10 configured as described above on the connector 20 will be described.
A connector 20 which is a harness for connecting the FPC 10 is mounted on the component mounting board 21. Further, a reinforcing plate 12 is adhered to the connection portion between the FPC 10 and the connector 20 by an adhesive 13.
[0016]
In the step of inserting the FPC 10 into the connector 20, the FPC 10 can be freely bent (vertically in FIG. 3) from the bending position shown in FIG. 2, so that the insertion workability is improved. In addition, since the protrusions 12b of the reinforcing plate 12 protrude in the length direction from the bending position of the FPC 10, holding the protrusions 12b at the time of insertion improves the workability of insertion. be able to. Further, the reinforcing plate 12 has rigidity to protect the FPC end 10a. In addition to being able to securely attach and detach the connector 20, the FPC 10 may be detached even if the FPC 10 swings after the connector 20 is attached. Can be prevented, and the reliability can be improved.
[0017]
In the present embodiment, an example in which the FPC 10 is bent vertically downward has been described, but the bending position and direction are arbitrary. For example, if the interval between the protrusions 12b, 12b of the reinforcing plate 12 is wider than the line width of the FPC 10, the FPC 10 can be bent in the vertical direction.
[0018]
As described above, the flexible wiring board 10 according to the present embodiment reinforces the connection terminals of the flexible wiring board 10 and installs the reinforcing plate 12 serving as a holding portion when the connector 20 is inserted and removed. , A base portion 12a serving as a detachable portion to and from the connector 20 together with the FPC end portion 10a, and projection portions 12b and 12b projecting in the length direction of the FPC 10 and serving as holding knob portions when inserting and removing the connector. Only a predetermined area from the outermost end of the connection terminal to the inside is bonded to the flexible wiring board 10, and the flexible wiring board 10 is bent inside the bonding area of the reinforcing plate 12 to project the protrusions 12b, 12b. Then, since the projections 12b, 12b are held and inserted into and removed from the connector 20, the connector can be easily inserted into and removed from the connector in a small space.
[0019]
The flexible wiring board according to the above embodiment can be applied to a panel such as a liquid crystal display, a portable information terminal such as a PDA (Personal Digital Assistants), a mobile phone equipped with a wireless communication function and an acoustic output function, and a portable type. It goes without saying that the present invention can be applied to electronic devices such as audio devices and portable AV players.
[0020]
Further, in the above embodiment, the terminal structure of the flexible wiring board, the mounting method of the flexible wiring board, and the name of the reinforcing board are used, but this is for convenience of description, and for example, the flexible wiring board, the circuit board connection method, and the like. Or a connector member.
[0021]
Further, the shape of the flexible wiring board may be any shape, and the types and number of materials, shapes, and the like constituting the flexible wiring board and the reinforcing plate are not limited to the above-described embodiment.
[0022]
【The invention's effect】
As described above in detail, according to the present invention, it is possible to realize a terminal structure of a flexible wiring board and a method of mounting the flexible wiring board which can be easily inserted into and removed from a connector in a space-saving manner. It is suitable to be applied to.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a connection configuration between a flexible wiring board and a connector of a circuit board according to an embodiment of the present invention.
FIG. 2 is a plan view showing a configuration of a flexible wiring board according to the embodiment of the present invention.
FIG. 3 is a side view when the flexible wiring board according to the embodiment of the present invention is bent.
[Explanation of symbols]
10 FPC (flexible wiring board)
10a FPC end 11 electric signal wiring pattern 12 reinforcing plate 12a bases 12b, 12b protrusion 13 adhesive 20 connector 21 component mounting board

Claims (4)

A terminal structure of a flexible wiring board connected to a connector of a circuit board,
Along with reinforcing the connection terminals of the flexible wiring board, a reinforcing plate serving as a holding portion when inserting and removing the connector is installed,
The terminal structure of a flexible wiring board, wherein the reinforcing plate is adhered to the flexible wiring board only in a predetermined region in a length direction from an outermost end of the connection terminal. The terminal structure for a flexible wiring board according to claim 1, wherein the reinforcing plate has a protrusion protruding in a length direction of the flexible wiring board. 3. The flexible wiring board according to claim 2, wherein when the flexible wiring board is bent inside the bonding area of the reinforcing plate, the protrusions protrude and serve as holding knobs for connector insertion / removal. Terminal structure. A method of mounting a flexible wiring board for connecting a connection terminal of the flexible wiring board to a connector of a circuit board,
Along with reinforcing the connection terminals of the flexible wiring board, a reinforcing plate serving as a holding portion when the connector is inserted and removed is bonded to a predetermined area from the outermost end of the connection terminal to the inside,
A method of mounting a flexible wiring board, comprising: bending the flexible wiring board inside the bonding area of the reinforcing plate to project a part of the reinforcing board; holding the projected portion;

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