JPH0453019Y2 - - Google Patents

Description

[Detailed description of the invention] "Industrial application field" The present invention relates to a flexible circuit board with a reinforcing plate that allows circuit components to be mounted with high precision, and is particularly suitable for mounting components required when mounting circuit components. The present invention relates to a flexible circuit board with a reinforcing member, which is characterized by the structure of positioning holes.

"Prior art" In a flexible circuit board with a reinforcing plate for forming circuit components on the flexible circuit board,
As a means for facilitating the mounting of circuit components, there is a structure conceptually shown in FIG. 3, for example. That is, in FIG. 3, the flexible circuit board 1 has, for example, component mounting sections 2 and 3, and wiring patterns are formed to connect required wiring patterns of these component mounting sections 2 and 3. An integrated flexible portion 4 is manufactured in advance. The component mounting portions 2 and 3 are provided with necessary lands 5 and 6 formed so that circuit components including chip components and the like can be mounted thereon. On the back surface of such a flexible circuit board 1, reinforcing plates 8 and 9 disposed at the parts corresponding to the component mounting parts 2 and 3 are bonded with a suitable adhesive or adhesive, and for example, the flexible parts A connecting portion 10 for temporarily connecting both reinforcing plates 8 and 9 on the back side of the flexible portion 4 is provided through a suitable dividing slit 12 without being joined to the flexible portion 4. Further, on the side of one of the reinforcing plates 8, an overhang 11 is provided through a dividing slit 13 to facilitate the component mounting process, and the overhang 11 is positioned at an appropriate position for component mounting. An appropriate number of holes 15 are formed in advance. In this way, when the reinforcing member 7 having both the reinforcing plates 8 and 9, the connecting part 10 and the overhanging part 11 is joined to the flexible circuit board 1, the common positioning hole 14 for bonding is used for both. and are joined together.

In order to mount circuit components on the flexible circuit board 1 supported by the reinforcing member 7 as described above, the positioning holes 15 for component mounting provided in the overhang 11 of the reinforcing member 7 are used to mount the circuit components on the flexible circuit board 1 supported by the reinforcing member 7. component mounting section 2 of circuit board 1;
With the positions of lands 5 and 6 in 3 determined,
After mounting the required circuit components on these lands 5 and 6, the connecting portion 10 and the overhanging portion 11 of the reinforcing member 7 are separated by the separating slits 12 and 13, thereby forming the structure shown in FIG. As shown conceptually, a flexible circuit board 1 with reinforcing plates 8 and 9 on which circuit components 17 are mounted can be obtained.

"Problems to be solved by the invention" Reinforcing member 7 having the above-mentioned overhang 11 used as a positioning means when mounting circuit components
Now, the flexible circuit board 1 and the reinforcing member 7 are connected to each other by the holes 14 provided for bonding the flexible circuit board 1 and the reinforcing member 7.
In addition, since the positioning hole 15 of the component mounting part is provided only in the overhanging part 11 of the reinforcing member 7, if this positioning hole 15 is used as a reference, the flexible circuit board 1 component mounting section 2,
There is a problem in that it is difficult to ensure positional accuracy with respect to lands 5 and 6 formed on 3. Such a situation becomes a serious problem as the circuit wiring pattern of the flexible circuit board 1 is formed with high density and the lands 5 and 6 are miniaturized.

"Means for solving the problem" The present invention is a flexible circuit board with reinforcing members devised to easily eliminate the above-mentioned land misalignment, which is a problem when mounting circuit components. This is what we provide. Therefore, in the present invention, an overhang is also provided on the flexible circuit board side, and this overhang and the overhang on the reinforcing member side are overlapped and joined, and both overhangs are connected to each other. Positioning holes for component mounting that match the positions are provided, and of the two positioning holes, the hole on the reinforcing plate side is formed to be larger than the hole on the flexible circuit board side.

``Example'' The present invention will be further described below with reference to FIGS. 1 and 2. 1, 2 and 2, the same reference numerals as in FIG. 3 indicate the same components, and as shown in FIG. In addition to the required component mounting parts 2 and 3 and the flexible part 4, the circuit board 1 is formed so as to integrally include an overhang part 1A on the component mounting part 2 side via a suitable dividing slit S. Ru. This overhang 1
A is provided to correspond to the arrangement position of the overhang part 11 of the reinforcing member 7 shown in FIG. 2, and also matches the position of the component mounting positioning hole 16 formed in the overhang part 11. As shown, the same number of component mounting positioning holes P are also formed in the overhanging portion 1A of the flexible circuit board 1. This positioning hole P for component mounting can be formed in the overhanging portion 1A so as to ensure sufficient positional accuracy with the required lands 5 and 6 formed on the component mounting portions 2 and 3 of the flexible circuit board 1. It is something. Here, both the above-mentioned overhanging parts 1A, 11
As shown in FIG.
The positioning hole 16 of the reinforcing member 7 is appropriately enlarged with respect to the positioning hole P of the reinforcing member 7.

The flexible circuit board 1 and the reinforcing member 7 formed as described above are bonded together using a suitable adhesive or pressure-sensitive adhesive except for the flexible portion 4 and the connecting portion 10. That is, the reinforcing member 7 is attached to the flexible circuit board 1.
The flexible circuit board 1 is provided with holes 14 for bonding and bonding formed on the back side of the circuit board 1, and holes 14 for bonding are formed on both sides of the circuit board 1 for bonding. Since the hole P is provided, there will be no change in the positional accuracy between the hole P and the lands 5 and 6. Then, during this bonding process, positioning holes P for mounting each component on both overhangs 1A and 11 are provided.
Even if some misalignment occurs between the reinforcing member 7 and the overhang 11, the positioning hole 16 on the side of the overhang 11 of the reinforcing member 7 is formed slightly larger, so that the misalignment between the two can be suitably eliminated. Therefore, the flexible circuit board 1
After bonding and bonding with the reinforcing member 7, each land 5, 6 of the component mounting portions 2, 3 is adjusted with precision based on the component mounting positioning hole P formed in the overhang portion 1A of the flexible circuit board 1. It becomes easy to mount required circuit components. After such component mounting processing, bending processing is performed at the parts of the dividing slits S and 13 to remove unnecessary parts of both the overhanging parts 1.
A, 11 are separated, and the connecting portion 1 of the reinforcing member 7 is
By separating 0 using the slit 12, a flexible circuit board product with a reinforcing plate on which circuit components are mounted can be efficiently obtained in the same manner as shown in FIG.

"Effect of the invention" As described above, the flexible circuit board with a reinforcing member of the present invention has an overhang on the flexible circuit board side that corresponds to the positioning hole for component mounting provided on the overhang of the reinforcing member. Similar positioning holes are also formed in the parts mounting holes, and among the positioning holes for mounting parts, the holes on the reinforcing member side are made appropriately larger than the positioning holes on the flexible circuit board side. When mounting components, the required circuit components can be mounted on the lands of the component mounting area with high precision based on the component mounting positioning holes of the flexible circuit board, without being influenced by the component mounting positioning holes on the reinforcing member side. It becomes possible to do so. Therefore,
According to the present invention, it is extremely advantageous for automatic mounting processing of circuit components, etc.

[Brief explanation of drawings]

1 and 2 are plan configuration diagrams conceptually showing the configuration of a flexible circuit board and a reinforcing member formed according to the present invention, and FIG. FIG. 3 is a diagram for explaining the configuration of positioning holes for component mounting formed in each overhang, and FIG. FIG. 4 is a diagram showing a flexible circuit board product with a reinforcing plate on which circuit components are mounted. 1...Flexible circuit board, 1A...Protrusion part, 2,
3...Component mounting part, 4...Flexible part, 5, 6...Land, P...Positioning hole for component mounting, S...Slit for division, 7...Reinforcement member, 8, 9...Reinforcement plate , 10...Connection part, 11...Protrusion part, 12,1
3... Slit for dividing, 14... Hole for bonding,
16...Positioning hole for component mounting.

Claims (1)

[Scope of utility model registration request] A flexible circuit board with a reinforcing plate, which includes a flexible circuit board having a component mounting part formed to mount a circuit component, and a reinforcing plate bonded to the back surface of the component mounting part, The mounting part and the reinforcing plate are each provided with an overhanging part that is joined to each other via a separating slit, and both of these overhanging parts are provided with positioning holes for component mounting whose positions match each other, and the mounting part and the reinforcing plate are provided with a positioning hole for mounting the components. A flexible circuit board with a reinforcing member configured such that among the positioning holes, the hole on the reinforcing plate side is formed larger than the hole on the flexible circuit board side.