JPH0685462B2 - Flexible printed wiring cable connector - Google Patents

Description

TECHNICAL FIELD The present invention relates to a connector for connecting an electronic device and a flexible printed wiring cable.

(Prior Art) With the high-density mounting of electronic devices, in order to improve work efficiency at the time of assembly, components are connected using a flexible printed wiring cable.

By the way, in order to couple the end portion of such a flexible printed wiring cable and the electronic component, a method of attaching a socket to the end portion of the cable and inserting the socket into a connecting pin of the electronic component is generally adopted. However, there is a problem in that not only the socket needs to be attached to the end of the cable, but also the size of the connecting portion becomes large because the socket is used.

In order to solve such problems, a method is widely adopted in which a flexible printed wiring cable is provided with a connection part at the end of which a conductive pattern is formed corresponding to the connection pin arrangement of the mounting target component and this is soldered to the pin. It has started to be done.

However, due to the recent miniaturization of components, the pin spacing of electronic components becomes narrower, and the conductive pattern of the connection part is complicated, which makes soldering work difficult, and the conductive path of the pattern becomes thin, which reduces reliability. There is a problem that this leads to a decrease in current capacity.

Of course, in order to improve the current density, it is conceivable to form conductive patterns on both sides of the substrate to reduce the pattern density, but it is necessary to gather the lead-out parts on one side in relation to the soldering work with electronic parts. However, there is a problem that the density of the soldered portion inevitably increases in any case.

(Purpose) In view of such a problem, an object of the present invention is to provide a connector for a flexible printed wiring cable in which soldering portions can be arranged in a dispersed manner.

That is, the feature of the present invention is that the ends of the flexible printed wiring cable are branched so that they can be overlapped with each other to form a plurality of attachment connection parts, and a pattern is dispersed in each connection part. The connecting portions are oriented so that the front surface and the back surface thereof are in contact with each other, and substantially the entire surfaces of these connecting portions are superposed on each other.

(Structure) Therefore, details of the present invention will be described below based on illustrated embodiments.

FIG. 1 shows an embodiment of the present invention. In the figure, reference numerals 1 and 2 respectively branch a substrate 3a of a flexible cable body 3 into two at an end portion thereof to attach a component P ( FIG. 2) is a connecting portion formed to cover the pin disposition surface, and is provided with an extension portion 4 having a play l capable of vertically superposing one connecting portion 2 on the other base portion 1. There is. The connection portion 1 which is on the lower side when folded is connected to the connection pins 40, 41, 42, 43, ...
Through holes 11, 12, 13, 14, 15, 16 ..
While providing a pin insertion path by drilling
A soldering island 12 in which conductive patterns 31, 32, 33, ... Are extended from the cable body 3 so as to surround 12, 16 ,.
a, 16a ... Are formed. On the other hand, the base 2 that is on the upper side when folded is cut so as to allow the solder of the lower base to pass through to the position corresponding to the through hole in which the soldering island is formed in the lower connection 1. While forming the insertion passages 22 and 26 formed by the notches, the through holes 21, 23, 24, 25, ... Are bored at the positions corresponding to the remaining pins to form the pin insertion passages, which are wrapped around. Thus, the conductive patterns 37, 38, 39, ... From the cable body 3 are extended to form the soldering islands 21a, 23a, 25a.

In this embodiment, the connecting portion 1 pin insertion passages 11, 12, 13,
14, 15, 16 ... Are the connection pins 40, 41,
The pins 41 and 43 protruding from the insertion passages 12 and 16 in which the soldering islands are formed and the islands 12a and 16a are connected and fixed by soldering in accordance with the pins 42 and 43. When the soldering of the pins to be connected to the connecting portion 1 is completed in this manner, the extension portion 4 is bent and the other connecting portion 2 is aligned with the pins 40, 41, 42, 43, ... , And the remaining pins 42 are connected and fixed by soldering (FIG. 3).

As a result, the pins of the attachment target component are dispersed and soldered in the patterns of the upper and lower two bases 1 and 2 to be electrically connected to the flexible printed wiring cable main body 3.

In this embodiment, the lower connecting portion is soldered to the connecting pin, and then the upper connecting portion is overlapped and soldered to the connecting pin. However, the two connecting portions 1 and 2 are vertically arranged. It is also possible to form a laminated body together and then insert it into the connection pin of the target component, and connect and fix the connection pin protruding from the connection portions 1 and 2 and the soldering island by soldering.

In this embodiment, the cable main body is branched to form two connecting portions, but the cable main body is branched into three or more.
The same effect can be obtained by stacking more layers.

Further, in this embodiment, the insertion passage is formed by the notches 22, 26, ... In the upper connection portion at the position facing the connection portion of the lower base portion, but it is formed by a relatively large through hole through which the solder can pass. May be. Furthermore, in this embodiment, the description has been given taking as an example the component in which the pins are radially arranged, but it goes without saying that the same can be applied to the case where the pins are arranged in a straight line.

(Effect) As described above, according to the present invention, the ends of the flexible printed wiring cable are branched to form a plurality of bases that can be overlapped with each other, and each base is made to correspond to the pin of the attachment target component. Since the through holes are formed and the conductive paths to be connected are dispersed and arranged, the shape of the pattern to be formed in the connecting portions can be simplified, and moreover, the entire surfaces of these connecting portions are superposed so as to overlap each other. It is possible to maximize the width of the wiring pattern provided in the mutual connection part and increase the width of the pattern conductive path to improve the current capacity. Since the wiring patterns are overlapped with each other in a direction of contacting with each other, contact between the wiring patterns arranged on each surface is prevented, and reliability can be improved.

[Brief description of drawings]

FIG. 1 is a plan view showing an embodiment of the present invention, and FIG.
FIG. 3 is an explanatory view showing the relationship between pin insertion passages and patterns and connection pins in the same apparatus, and FIG. 3 is an explanatory view showing a mounted state of the same apparatus. 1, 2 ...... Connection part 3 ...... Flexible printed wiring cable main body 11, 12, 13, 14 ...... Pin insertion passage 12a, 16a ...... Soldering islands 21, 22, 23, 24 ...... Pin insertion passage 21a 16a ... … Islands for soldering

Claims (1)

[Claims] Claim: What is claimed is: 1. A flexible printed wiring cable body is branched at one end to form a plurality of superimposable connection portions, and a pin insertion passage is provided at a position corresponding to a connection pin of an attachment target component. In a connector for a flexible printed wiring cable in which a wiring pattern is distributed to each connection portion and the wiring pattern is extended to an insertion hole corresponding to a connection pin, the plurality of connection portions are oriented such that their front and back surfaces are in contact with each other, and A connector for a flexible printed wiring cable, wherein substantially the entire surfaces of the connecting portions are overlapped with each other.