JP3252256B2 - Through-hole type FPC connector - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a through-hole type FPC (flexible printed circuit).
The present invention relates to a connector for connection.

[0002]

2. Description of the Related Art A conventional FPC connector disclosed in Japanese Utility Model Laid-Open No. 5-6759 will be described with reference to FIGS.

[0003] A conventional FPC connection connector 11 includes a number of contacts 12, a base insulator 13, and a slide insulator 14.

A large number of substantially U-shaped contacts 12 are fixed to the base insulator 13 at predetermined intervals in a direction perpendicular to the paper surface.

[0005] The order in which the FPC 15 is fitted to the FPC connector 11 will be described. First, in the state of FIG.
When the FPC 15 is moved in the direction of the arrow and its tip is inserted between one piece 12A and the other piece 12B of the contact 12, the state shown in FIG. 6 is reached. Next, the slide insulator 14 is moved in the direction of the arrow, and
When the FPC 15 shown in FIG. 7 is fitted into the FPC connection connector 11, the press-fitting is performed between the upper surface of the tip of the contact member and the other piece 12 </ b> B of the contact 12.

[0006]

In the conventional connector for FPC connection, when the number of contacts, that is, the number of cores increases, the insertion force of the slide insulator must be increased. Also, it was necessary to make one piece of the contact and the other piece elastic, so that the size of the contact had to be increased. Therefore, the structure of the conventional connector for FPC connection hinders a low profile (low profile).

Accordingly, the present invention is to improve the drawbacks of the above-mentioned conventional connector for FPC connection, and to provide a through-hole type FPC connection which can be fitted with a low profile and a weak operating force even with a large number of cores. It is intended to provide a connector.

[0008]

The present invention employs the following means in order to solve the above-mentioned problems.

1. An FPC having a through hole, an elastic backing having a through hole superimposed on the FPC and having a diameter smaller than the diameter of the through hole of the FPC; an inner side of the through hole of the FPC and the elastic backing; A conductive thin film formed over the inside of the through hole, and a pin contact having a diameter smaller than the diameter of the through hole of the FPC and larger than the diameter of the through hole of the elastic backing. When the pin contact is inserted into the through hole of the FPC and the through hole of the elastic body backing, the contact pressure generated between the pin contact and the conductive thin film causes the FPC to contact the pin contact. Is a through-hole type FPC connector to which is connected.

[0010] 2. 2. The through-hole type FPC connector according to claim 1, wherein a plurality of the pin contacts are alternately arranged on the insulator, and a plurality of the through holes are respectively formed in the FPC and the elastic body lining corresponding to the pin contacts.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

[0012] Through-hole type FP of this embodiment
The connector 1 for C connection includes a board 2, a number of pin contacts 3 having no elasticity, an FPC 4, and an elastic backing 5.
, A conductive thin film 6 and an insulator 7.

As shown in FIGS. 1 and 2, a large number of pin contacts 3 are arranged and fixed on a substrate 2 in a line at regular intervals. A large number of pin contacts 3 are arranged so that every other pin portion 3a is alternately positioned. An insulator 7 is mounted on the many pin contacts 3, and each pin portion 3 a penetrates each through hole formed in the insulator 7 and is held by the insulator 7.

A large number of through holes are respectively formed in the FPC 4 and the elastic backing 5 corresponding to the respective pin portions 3a of the large number of pin contacts 3. Each through hole diameter of the elastic lining 5 is smaller than each through hole diameter of the FPC 4. FP
After superimposing the elastic backing 5 on C4 and bonding it, FPC4
Each conductive thin film 6 is formed by a method such as plating over the inside of each through-hole and the inside of each through-hole of the elastic backing 5. Each conductive thin film 6 is connected to a conductive pattern (not shown) of the FPC 4.

The diameter of each pin portion 3a of the many pin contacts 3 is formed smaller than the diameter of each through hole of the FPC 4 and larger than the diameter of each through hole of the elastic backing 5.

When connecting the FPC 4 and the substrate 2, as shown in FIG.
“a” penetrates each through hole of the FPC 4 without resistance and pushes out each through hole of the elastic lining 5, so that a contact pressure is generated between each pin portion 3 a and each conductive thin film 6.
Therefore, each pin portion 3 a of the many pin contacts 3 fixed to the substrate 2 is connected to the FPC 4 via each conductive thin film 6.
Can be in contact with each of the signal patterns. At this time, F
Each through hole of PC4 is not damaged.

In this through-hole type FPC connector 1, when the FPC 4 is connected to the substrate 2, the FPC 4
The entire through holes of the elastic body lining 5 and the pin portions 3a of the many pin contacts 3 are not fitted at once, but in the width direction of the FPC 4 and the elastic lining 5 (the pitch direction of the many pin contacts 3). FPC using the elasticity of
Each of the through holes 4 and the elastic backing 5 can be fitted into each of the pin portions 3a of the large number of pin contacts 3 little by little from an arbitrary position one after another. Can be fitted.

The pin contact 3 of the through-hole type FPC connector 1 can be connected not only to the end of the FPC 4 but also to an intermediate portion. That is, as shown in FIG. 4, the FPC 4 to be connected can be connected to the substrate 2 by providing a structure that fits into each of the pin portions 3a of the above-mentioned many pin contacts 3 in the intermediate portion of the FPC 4.

[0019]

As is apparent from the above description, the present invention has the following advantages.

1. Since the total thickness of the FPC and the elastic lining is equal to or less than the height of the pin contact, the height of the pin contact remains the same as the height of the connector even after fitting, so that the entire connector has a low profile.

2. Since both the FPC and the elastic backing have elasticity in the width direction, they can be sequentially fitted. Therefore, even if the number of cores is increased, the fitting can be performed with a weak operating force.

3. By providing not only the end of the FPC but also the structure that fits into the pin contact, the intermediate part can be connected to the substrate.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state before fitting according to an embodiment of the present invention. However, a part is shown in a sectional view.

FIGS. 2A and 2B show a state before fitting according to an embodiment of the present invention, wherein FIG. 2A is a plan view and FIG.

FIG. 3 is an enlarged sectional view of a main part in a fitted state according to the embodiment of the present invention.

FIG. 4 is a perspective view showing a fitting state of the embodiment of the present invention and an intermediate portion of the FPC. However, a part is shown in a sectional view.

FIG. 5 is a cross-sectional view showing a state before fitting of a conventional FPC connection connector.

FIG. 6 is a cross-sectional view showing a state in which a conventional FPC connector is being fitted.

FIG. 7 is a cross-sectional view showing a fitted state of a conventional FPC connection connector.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Through-hole type FPC connector 2 Board 3 Pin contact 3a Pin part 4 FPC 5 Elastic backing 6 Conductive thin film 7 Insulator

Claims (2)

(57) [Claims] An FPC having a through hole;
An elastic backing having a through hole superimposed on a PC and having a diameter smaller than the diameter of the through hole of the FPC; and straddling the inside of the through hole of the FPC and the inside of the through hole of the elastic backing. And a pin contact having a diameter smaller than the diameter of the through hole of the FPC, and having a diameter larger than the diameter of the through hole of the elastic body backing. The FPC and the pin contact are connected by a contact pressure generated between the pin contact and the conductive thin film when inserted into the through hole of the FPC and the through hole of the elastic backing. Through hole type F
Connector for PC connection. 2. A plurality of said pin contacts are alternately arranged on an insulator, and a plurality of said through holes are respectively formed in said FPC and said elastic lining corresponding to said pin contacts. The through-hole type FPC connector described.