JPS62256385A - Connector for flexible printed circuit - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] (Summary) For connecting a contact and a flexible printed board, a slit that opens at the tip of the contact is provided, and the flexible printed board is connected to the flexible printed board through the slit. It is a connector that can be easily and easily connected.

[Industrial application field]

The present invention relates to a connector for connecting flexible printed boards on which wiring patterns are formed, and particularly to a contact portion for connecting flexible printed boards.

[Prior art] Figure 5 shows a side sectional view of a conventional flexible printed board +7):1 connector, and Figure 6 (bnc) shows the area around the connection between the flexible printed board and the contact in Figure 5. show.

The conventional connector has an insulator 1' as shown in Figure 6 (al).
A continuous part of the flexible printed board 3' to which solder 6' has been applied in advance is brought into contact with the side surface of the rod-shaped contact 2' which has been bonded to n1e, and the contact is heated in the direction of arrow A' from the opposite side with the contact 2' in between. Solder 6' due to the heat transmitted through 2'
Melt and solder.

Thereafter, as shown in FIG. 6, 1b+, the insulator cover 4' is attached to the insulator 1' by deforming the flexible printed board 3'.
to fit. The purpose of deforming the flexible printed board 3' is to increase the tensile strength.

The connector completed in this way is shown in FIG. 5, in which the insulator 1' and the insulator cover 4' extend in a direction perpendicular to the plane of the paper, and the contacts 2'
A plurality of them are arranged in parallel in the same direction. When the plurality of contacts 2' are inserted into the insulator 1', they are integrated through connecting portions, and after the insulator 1' is inserted, the connecting portions are cut to separate them. With this cutting, there is a bar 1J2 at the cut part.
c' occurs, and when the flexible printed board 3' is connected and the insulator cover 4' is fitted, the flexible printed board 3' comes into contact with the burr 2c' of the contact 2', damaging the pattern of the flexible printed board 3'. become.

Therefore, insulator protrusions 81, ]a' that protrude upward from the contacts 2' between the plurality of contacts 2' are formed integrally with the insulator 1', and the insulator cover 4' is fitted into the insulator protrusion 81, ]a', which is fitted with the insulator cover 4'. Even if printed board 3' is deformed, contact 2
The burr 2c' of 2c' will be in a state where it will cross over without making contact. [The melting point that the present invention aims to solve] In the conventional connector described above, the contacts are heated during the heating process for soldering. If the width is wide, it takes a long time for the heat to reach the connection part in Figure 6 (because there is a lot of heat escaping downwards as shown by the arrow in al).

Further, since a broken body protrusion is formed between a plurality of contacts arranged in parallel, this gets in the way and makes it impossible to visually confirm the shape and consistency of the soldering.

When the insulator cover 4 is fitted as shown in FIG. 6, 1b+, the force exerted by the deforming flexible printed board 3/ to return to its original shape due to its own rigidity is weakened. That is, since the connection between the flexible printed board and the contact was bent in the direction of separation, poor contact often occurred.

The aim of the invention was to solve these problems.

[Means for solving problems]

In order to solve the above-mentioned problems, this Q-Mei includes an insulator into which the contact is inserted and fixed, a flexible printed board connected to one end of the contact exposed from the insulator, and a 7-rekin bull print temporary of the contact. and an insulator cover that fits into the insulator so as to cover the connection.

The contact is provided with a sled that opens toward the tip on the connection side of the flexible printed board, and the flexible printed board is connected to the inner surface of the slit. Ru.

〔Example〕

The present invention will be described in detail below with reference to the drawings.

Figures 1 to 4 are diagrams showing examples of the connector according to the present invention;
t (a cutaway view of the main parts explaining the process of connecting the flexible printed board and the contacts; FIG. 3 is an exploded perspective view with the flexible printed board omitted).

FIG. 4 is a diagram showing the fitted state of the insulator and the insulator cover.

In these figures, 1 is an insulator, 2 is a contact, 3 is a flexible printed board (hereinafter referred to as FPC), 4 is an insulator cover, and 5 is a slot 11 having an iK opening above the contact 2.
v), 5 is solder.

The structure of the non'AtM example will be explained with reference to Figure 1 of Nazuki.

A busy contact 2 for vertically transferring money is provided on the zetsukin body 1 so that its upper end is exposed.

At the exposed upper end of the contact 2, a slit 5 into which the FPC 3 is inserted is provided at an offset position with respect to the width direction of the contact 2. The other end of the 0 contact 2 which is inserted into the F P C3 connector and connected to the 23s of the contact 2 by soldering is the contact part 2c with the mating connector.
It becomes.

In addition, the insulator cover 4 is fitted with an insulator IK to protect the FPC connection part, and the inner wall of the insulator cover 4 is approximately U-shaped, so that the FPC 3 is connected between the contact 2 and the insulator 1. The FPC 3 is deformed so as to be bent by being inserted into the holder. By bending the KFPC 3 in this manner, the tensile strength of the FPC 3 is increased.

Next, the process of connecting KFPC3 and Konotact 2 is shown in Figure 2 (
al (explained by bl).

Before fitting the insulator cover 4, a slit 5KFPC3 opened at the upper end of the contact 2 implanted in the insulator is inserted using a guide (not shown).

At this time, as shown in FIG. 2, the KFPC 3 is held at 1° so that the contact 2 is bent at 2am&C. In this state, heat is applied as shown by arrow A 5, and the solder 6 is bathed by the heat transmitted through part 2a to make the connection. Contact 2 of 2
Part a is provided to be thin, and since the bottom part is also thin, there is little heat escaping upward, and the heating time is short, and there is no problem with the contact 2 and the insulator IK.

After connecting the FPC3, connect the L@edge cover 4 to the insulator lK as shown in the tb1 diagram. I will explain to Shun how to make money. With this fitting, FPC3t! Inner wall shape of absolute cover 4 KgA
It is bent so as to be pulled out from a part between the insulator l and the insulator cover 4. Due to the rigidity of the FPCa company itself, a force is applied to the original shape, but in soldering, contact 2's 2a is busy, so the possibility of peeling is extremely small. Insulator 1 and #! The fitting of the green pot body cover 4 will be explained with reference to FIGS. 3 and 4.

The insulator 1 is provided with a through hole 1b at both ends thereof, and fitting protrusions 1c and ld at both ends and the front surface, and an insulator cover 4K.
A fitting portion 4a that passes through the through hole 1b of the Fi insulator 1 and fits into the fitting projection 1cK, and a fitting Rib that fits into the fitting projection 1dK of the insulator 1 are provided.

Then, these were integrated to fit together, but at this time, since the insulator 1 (09 mating protrusion 1c, ld Fi has a sloped shape from the upper part to the middle part), the fitting is done smoothly. indicates the iron stand condition.

In addition, the contact 2 which is paralleled in II number is the contact λ to the insulator 1.
At the stage, Fi2bM is integrated through the connecting part and inserted.
kK is cut, but as in the past, when cutting, the 11th! IK
FP due to burr 2dK on the mouth where 2d is generated
In order to prevent problems with C3, KIIi! ! !
An edge protrusion 1a is formed, but as can be seen from Figure 3, this insulator protrusion 1a is only between the 2b parts of the contact 2 where the Paris 2d occurs and is not formed on the %2a2a, so that the FPC 3 and the contact 2 are not formed. Soldering with the condition 4i11
ad can be performed visually.

C effect] According to the connector of the present invention, the connection process between the FPC and the contact is easy and the VC time can be shortened by 1 uVC. becomes smaller.

[Brief explanation of drawings]

Figures 1 to 4 show examples of such connectors according to the present invention.
Figure 1 is a side cross-sectional view, Figure 2 (al (bl) is a cross-sectional view of the main parts for explaining iM follow-up work 8 for flexible printed boards and contacts, and Figure 3 is a cross-sectional view of the main parts to explain the
The figure is an exploded perspective view with the flexible printed board omitted, and FIG. 4 is a perspective view showing the fitted state of the U-shaped body and the insulator cover. Fig. 5 is a cross-sectional view of the conventional connector, and Fig. 6 is a cross-sectional view of the main parts for explaining the connection with the conventional 7 lexi-pulp 1J contact plate. [Explanation of symbols] l...Insulator 2...Contact, 3
...Flexible boot board (FPC),
4...Insulator cover, 5...Slit for inserting flexible printed circuit board, 6...Solder agent, patent attorney Igata Sada mourning for FPC] 77 town area $2ri(no
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Claims (3)

[Claims] (1) An insulator 1 into which the contact 2 is inserted and fixed, a flexible printed board 3 connected to one end of the contact 2 exposed from the insulator 1, and a connecting side of the flexible printed board 3 of the contact 2. It is composed of an insulator cover 4 that fits with the insulator 1 so as to cover the contact 2, and the contact 2 is provided with a slit 5 that opens toward the tip on the connection side of the flexible printed board 3. A flexible printed board connector characterized in that a flexible printed board 3 is connected to the inner surface. (2) The flexible printed board 3 on the inner surface of the slit 5 of the contact 2 is
2. A connector for a flexible printed board according to claim 1, wherein the connector is connected by heating solder 6 attached to the connector. (3) The connector for a flexible printed board according to claim 1, wherein the slit 5 of the contact 2 is provided at an offset position with respect to the width direction of the contact 2.