JP2008010308A - Connecting connector of flexible wiring board - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a means in which connection is enabled so that an FPC is not damaged by preventing peeling-off of a plated reed of the FPC that may occur when the FPC is inserted into an insertion type FPC connector. <P>SOLUTION: The FPC connector 26 has a mold 21 as the base, and at an insertion port 22 of the FPC, numerous metallic lead terminals 24 are aligned, while on its upper part, an actuator 23 for locking after the FPC has been inserted is installed as a movable part. A corner R27 is formed at the corner part facing the insertion port 22 of the metallic lead terminal 24, and since there is scarce anxiety that the plated lead of the FPC may be damaged even if the plated lead of the FPC is contacted and rubbed by the corner part of the metallic lead terminal 24 when the FPC is inserted, defects such as a short-circuit, disconnection or the like that may be caused by peeled-off plating can be prevented, so that improvement of connection reliability can be improved. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an insertion type connector used for electrically and structurally connecting a flexible printed circuit (hereinafter referred to as FPC).

  In recent years, as electronic devices such as mobile phones have become smaller, lighter, and more multifunctional, the circuit boards that make up these electronic devices are thin and flexible and can be arranged in a microstrip line structure. FPC is frequently used. At present, a large number of folding types are employed in mobile phones, and the folding portions (hinge portions) are generally electrically connected by FPC. Further, FPC is also frequently used as movable part wiring and space saving wiring of electrical products such as computer terminals, printers, and cameras. As a means for electrically and structurally connecting these FPCs, insertion type or stack type (stacking) connectors are used (see Patent Documents 1 to 3, etc.).

  A conventional insertion type FPC and FPC connector and a method of connecting them will be described with reference to FIGS.

  4A and 4B are diagrams showing a configuration example of an FPC connected to an insertion type FPC connector. FIG. 4A is a plan view of a portion in contact with a metal lead terminal of the FPC connector, and FIG. It is sectional drawing which shows the layer structure of FPC in the location which contacts the metallic lead terminal of an FPC connector.

  A copper foil pattern wiring 13 is bonded to the surface of the insulating film 12 serving as the base of the FPC 10, and plating 14 is applied to a range 16 in contact with the FPC connector on the copper foil pattern wiring 13. Further, a plating lead 14a necessary for performing electroplating is present at the front end of the FPC. A portion where the copper foil pattern wiring 13 other than the range 16 in contact with the FPC connector is joined is covered with an insulating film 15. Further, a reinforcing plate 11 is bonded to the back surface of the portion inserted into the FPC connector at the tip of the insulating film 12 serving as a base with an adhesive. Corners R17 are provided at both corners of the front end portion of the FPC, thereby facilitating insertion into the FPC connector.

  FIG. 5 is a schematic perspective view showing a configuration of a conventional FPC connector.

  The FPC connector 20 is based on a mold 21 made of insulating resin or the like, and has an FPC insertion port 22 into which the range 16 of the FPC 10 that comes into contact with the FPC connector is inserted. A large number of metallic lead terminals 24 are arranged in the insertion port 22, and an actuator 23 is provided as a movable part on the upper part for locking after the FPC is inserted. In addition, in FIG. 5, although the metallic lead terminal 24 is typically shown by the lead wire which has a contact edge part, as shown in patent documents 1-3 etc., an actual shape is a metal plate, for example It has a shape formed by die cutting or the like. Further, in the conventional FPC connector, the shape of the corner portion facing the FPC insertion port 22 of the metal lead terminal 24 is an edge shape 25.

  6A and 6B are diagrams illustrating the operation of inserting the FPC into the FPC connector. FIG. 6A is a top view when the FPC 10 is inserted into the FPC connector 20, and FIG. 6B is a diagram after the FPC 10 is inserted into the FPC connector 20. It is a top view which shows the state.

  The FPC 10 shown in FIG. 4 is inserted into the insertion port 22 of the FPC connector 20 with the reinforcing plate 11 facing upward. After contacting the plating 14 on the copper foil pattern wiring 13 of the FPC 10 and the metal lead terminal 24, the connecting portion 16 of the FPC 10 is fixed by closing the actuator 23 so that the FPC 10 does not come off from the FPC connector 20. ing.

Japanese Patent Laid-Open No. 8-315928 JP 2001-357918 A JP 2002-170641 A

  In the conventional insertion type FPC connector, since the corner portion 25 facing the insertion port 22 of the metallic lead terminal 24 is formed in an edge shape, when the FPC 10 is inserted into the FPC connector 20, the FPC 10 Since the plating lead 14a contacts the edge-shaped corner 25, the FPC plating lead 14a is damaged, so that the terminal is broken and the connection reliability of the FPC is lowered. FPC is a material that is strong against bending and twisting, but it is weak against plating peeling at the end face of the FPC, so once it is triggered, such as scratching the plating, the plating easily peels off and the FPC Will damage the connection terminals.

  SUMMARY OF THE INVENTION An object of the present invention is to provide means for preventing an FPC plating lead from being peeled off during insertion in an insertion type FPC connector so that the FPC can be connected without being damaged.

  The present invention relates to an insertion type flexible wiring board connector in which a plurality of metal lead terminals are arranged on an insertion port side into which a flexible wiring board is inserted, based on an insulating resin mold. A feature is that an angle R is formed at an edge portion facing the insertion slot.

  Further, in another embodiment of the present invention, in an insertion type flexible wiring board connector in which a plurality of metal lead terminals are arranged on the insertion port side where the flexible wiring board is inserted, based on an insulating resin mold, The edge portion of the metallic lead terminal facing the insertion port is embedded in a groove formed in the insulating resin mold so that the edge portion and the flexible wiring board are not in direct contact with each other. A corner R or C cut is formed in an edge portion facing the insertion port of the insulating resin mold.

  In yet another embodiment of the present invention, in an insertion type flexible wiring board connector in which a plurality of metal lead terminals are arranged on an insertion port side into which a flexible wiring board is inserted, based on an insulating resin mold. The periphery of the edge portion of the metallic lead terminal facing the insertion port is embedded in a groove formed in the insulating resin mold, and the edge portion of the embedded metallic lead terminal and the insulating resin mold are embedded. By forming the corners R at the edge portions facing the insertion port, the single edge having the corner R by the metallic lead terminal and the mold resin at the edge portion facing the insertion port. It is characterized by forming a surface.

  In the present invention, in the insertion type FPC connector in which the metal lead terminal is arranged on the insertion port side, the corner R facing the insertion port of the metal lead terminal is formed with a corner R. Scratching of the plating lead due to contact between the plated lead of the FPC and the corner portion of the metal lead terminal when the FPC connector is inserted can be avoided, thereby improving the connection reliability of the FPC.

  In the present invention, in order to improve the connection reliability between the FPC connector and the FPC, there is no need to change the current material for both the FPC connector and the FPC, so the connection reliability between the FPC connector and the FPC without increasing the material cost. Can be improved.

  FIG. 1 is a schematic perspective view of an FPC connector showing a first embodiment of the present invention.

  In this embodiment, the shape of a conventional FPC connector is partially improved. The FPC connector 26 of this embodiment is also based on the mold 21 and has a large number of metallic lead terminals 24 in the insertion opening 22 of the FPC. Are arranged, and the locking actuator 23 after the FPC is inserted is provided as a movable part on the upper part thereof, which is the same as the conventional FPC connector shown in FIG.

  In the FPC connector 26 of the present embodiment, a corner R27 is formed at the corner facing the insertion port 22 of the metallic lead terminal 24. When the FPC is inserted into the FPC connector 26 of the present embodiment, the FPC is inserted into the corners of the metal lead terminal 24 when inserted compared to the metal lead terminal having the edge shape 25 as in the conventional FPC connector 20. Since there is little fear of damaging the FPC plating lead 14a due to the corner R formed at the corner even if it is rubbed in contact with the portion, it prevents problems such as peeled or shorted plating and improves connection reliability. Can be planned.

  As described above, in this embodiment, only a very simple configuration for forming the corner R at the corner (edge) facing the insertion opening of the metal lead terminal in the conventional FPC connector is added, and the cost is low. It is possible to improve the connection reliability by preventing the occurrence of defects at the end of the FPC connected to the FPC connector.

  FIG. 2 is a schematic perspective view of an FPC connector showing a second embodiment of the present invention.

  The FPC connector 28 of this embodiment is also based on the mold 21, and a number of metallic lead terminals 24 are arranged in the insertion port 22 of the FPC, and a locking actuator 23 after the FPC is inserted is provided as a movable part on the upper part. This is similar to the conventional FPC connector shown in FIG.

  In the FPC connector 28 of this embodiment, the metal lead terminal 24 is embedded in the groove of the mold 21 of the FPC connector so that the edge of the metal lead terminal 24 and the FPC do not directly contact each other, and the mold itself also has a corner R. Alternatively, a C cut 29 is formed. Even when the FPC is inserted into the FPC connector 28 configured in this way, as described above, even if the FPC comes into contact with the insertion port 22, there is little fear of damaging the FPC plating lead 14a, and connection reliability can be improved. It is.

  In the present embodiment, the corner R of the metallic lead terminal 24 embedded in the groove of the mold 21 of the FPC connector is formed, and the corner R is also formed at the corner of the mold resin insertion port 22. The metallic lead terminal 24 and the molding resin insertion port 22 can be configured to form the same surface, and the same effect can be obtained.

  In the above embodiment, the case where the FPC 10 is configured as a single-sided wiring FPC with a reinforcing plate has been described. However, the present invention can also be applied to a double-sided wiring FPC. In that case, the configuration of this embodiment is provided for the upper and lower corners of the FPC insertion slot.

  FIG. 3 is a schematic cross-sectional view of an FPC connector showing a third embodiment of the present invention that can also be applied to a double-sided wiring FPC.

  Although the FPC connector 30 of this embodiment is also based on an insulating resin mold, in this embodiment, a large number of metallic lead terminals 31 and 32 are arranged at the lower and upper portions of the FPC insertion slot, respectively. Since corners R33 and R34 are formed at the corners facing the insertion openings of these metallic lead terminals 31 and 32, the FPC is metallic even when the FPC is inserted into the FPC connector 30 of this embodiment. Even if the lead terminals 31 and 32 are rubbed in contact with the corners, the corners R formed at the corners are less likely to damage the plating leads formed on both sides of the FPC. Problems can be prevented and connection reliability can be improved.

1 is a schematic perspective view of an FPC connector showing a first embodiment of the present invention. It is a schematic perspective view of the FPC connector which shows the 2nd Embodiment of this invention. It is a schematic perspective view of the FPC connector which shows the 3rd Embodiment of this invention. It is a figure which shows the structural example of FPC connected to an insertion type FPC connector. It is a schematic perspective view which shows the structure of the conventional FPC connector. It is a figure which shows the operation | movement which inserts FPC in a FPC connector.

Explanation of symbols

10 FPC
11 Reinforcing plate 12 Insulating film 12
13 Copper foil pattern wiring 14 Plating 14a Plating lead 15 Insulating film 16 Range in contact with FPC connector on copper foil pattern wiring 17 Corner R
20, 26, 28 FPC connector 21 Mold 22 FPC insertion slot 23 Actuator 24 Metal lead terminal 25 Edge shape 27 Corner R
29 Corner R or C cut

Claims (4)

  In an insertion type flexible wiring board connector in which a plurality of metal lead terminals are arranged on an insertion port side where a flexible wiring board is inserted based on an insulating resin mold, facing the insertion port of the metal lead terminal. A connector for a flexible wiring board, wherein a corner R is formed at the edge portion.   In an insertion type flexible wiring board connector in which a plurality of metal lead terminals are arranged on the side of an insertion port on which a flexible wiring board is inserted based on an insulating resin mold, the metal lead terminal faces the insertion port. The edge portion is embedded in a groove formed in the insulating resin mold so that the edge portion and the flexible wiring board are not in direct contact with each other and faces the insertion port of the insulating resin mold. A connector for a flexible wiring board, characterized in that a corner R or C cut is formed in the edge portion.   In an insertion type flexible wiring board connector in which a plurality of metal lead terminals are arranged on the side of an insertion port on which a flexible wiring board is inserted based on an insulating resin mold, the metal lead terminal faces the insertion port. The periphery of the edge portion is embedded in a groove formed in the insulating resin mold, and the edge portion of the embedded metal lead terminal and the edge portion facing the insertion port of the insulating resin mold are respectively provided. By forming the corner R, a single surface having the corner R is formed by the metallic lead terminal and the molding resin at the edge portion facing the insertion port. connector. The flexible wiring board connector is configured to be applicable to a double-sided wiring type flexible wiring board in which the metal lead terminals are arranged above and below an insertion port into which the flexible wiring board is inserted. The connector for flexible wiring boards according to any one of claims 1 to 3.

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