JP2006179408A - Connector - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a connector for a flat cable equipped with a plurality of connecting terminals with positions shifted from each other, wherein as many contact parts to make contact with the contact parts of the connecting terminals by the number of the connecting terminals are prepared. <P>SOLUTION: This connector is equipped with an insulator, and first and second conductive contacts held by the insulator, the insulator is equipped with a first insertion opening inserted with the first contact and a second insertion opening inserted with the second contact, When the first contact is inserted from the first insertion opening, it is engaged with the opening with a first contact part facing upward, and when the second contact is inserted from the second insertion opening, it is engaged with the opening with a second contact part facing downward at the position facing the first contact part of the first contact. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a board-to-FPC / FFC connector, and more specifically, an FPC / FFC having a structure in which a plurality of connection terminals of the FPC / FFC are provided to widen the pitch between contact terminals to prevent whisker. Concerning connectors.

A so-called FPC / FFC connector that connects an FPC (flexible printed cable) / FFC (flexible flat cable) in the prior art to a connector is known.
The FPC / FFC flat cable used here has a plurality of conductors arranged in parallel at predetermined intervals between two tape-like insulating plastic films, and the conductors at both ends are exposed to the required length and connected. The terminal portion is provided. Such a flat cable is connected by inserting the connection terminal portion into the connection connector.
As the flat cable conductor, a flat rectangular conductor whose outer periphery is plated in order to stabilize the connection quality is used. Conventionally, Sn (tin) plated rectangular conductors or Sn (tin) -Pb (lead) alloy rectangular conductors are used for these plated rectangular conductors.
However, with the recent trend toward downsizing and high performance of various electronic devices, printed circuit boards are becoming smaller and higher in density, and the pitch between connecting terminals of printed circuit boards is becoming increasingly narrower. For this reason, as for the flat cable connecting these printed circuit boards, a high-density flat cable in which the conductor interval is narrowed to match the pitch between the connection terminals of the printed circuit board is required, and the conventional conductor interval is 1 mm. For example, there is a demand for a high-density flat cable having a conductor interval of 0.3 mm.
Furthermore, as electronic devices become smaller and more dense, the interior of the device is often exposed to a high temperature environment, and from the viewpoint of improving the reliability of the device in a high temperature environment, the conductor of the flat cable used in the device The plating layer is required to have a high heat resistance.

Japanese Patent Application No. 2003-51706 (pages 5-9, Fig. 1)

However, with the narrowing of the conductor spacing of the flat cable of the prior art described in the background section above, there is a problem that the flat cable using the conventional Sn single plating conductor cannot meet such a demand. I came.
The conventional flat cable has a problem that whiskers are generated from the Sn plating layer of the flat cable conductor, and a short circuit accident is caused between the conductors arranged in parallel by the whisker. The conventional flat cable using the Sn single plating conductor has a problem when used as a high-density flat cable in which the conductor interval is narrowed.

  Therefore, even when used as a high-density flat cable, there is a problem that must be solved with a connector that does not cause a conductor short circuit accident due to whiskers.

  In order to solve the above problems, a connector and a connector connection method according to the present invention are configured as follows.

(1) The connector includes an insulator and conductive first and second contacts held by the insulator, and the insulator is inserted into the first insertion port into which the first contact is inserted and the second contact. The first contact is engaged with the first contact portion facing upward when inserted from the first insertion port, and the second contact is inserted into the second insertion port. The second contact portion is engaged with the first contact portion facing the first contact portion in the downward direction when inserted from the mouth.
(2) A plurality of conductors arranged in parallel at regular intervals, with two conductors with a connection terminal provided by exposing the conductor at the end for a certain length, and connecting the back to each other on both sides When a flat cable having a terminal portion is formed and the flat cable is inserted into the connector, the upper connection terminal portion is connected to the second contact portion, and the lower connection terminal portion is connected to the first contact portion. The connector according to (1), wherein the connector is connected in a mechanical manner.

(3) The connector includes an insulator and conductive first and second contacts held by the insulator, and the insulator is inserted into the first insertion port into which the first contact is inserted and the second contact. The first contact is engaged with the first contact portion facing upward when inserted from the first insertion port, and the second contact is inserted into the second insertion port. When the second contact portion is inserted from the mouth, the second contact portion is engaged with the first contact portion at a position shifted from the first contact portion and facing upward.
(4) Two cables having a structure in which a plurality of conductors are arranged in parallel at regular intervals, the conductors at the end portions are exposed over a certain length and connection terminal portions are provided, and the positions of the connection terminal portions are shifted and bonded together When the flat cable having two connection terminal portions in the same direction is formed and the flat cable is inserted into the connector, the front connection terminal portion is the second contact portion and the next connection terminal portion is The connector according to (3), wherein the connector is electrically connected to each of the first contact portions.

  The connector of the present invention prepares contacts corresponding to the number of connection terminal portions in the insulator corresponding to a flat cable having a plurality of connection terminal portions, and connects the connection terminal portions and the contacts when the flat cable is inserted. By doing in this way, even if it is a structure which obtains a desired pole number, since the pitch between the terminals of a connection terminal part can be widened, the short circuit by generation | occurrence | production of a whisker can be prevented.

  Next, embodiments of a connector and a connector connection method according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 to 4, the connector according to the present invention has a substantially long box-shaped insulator 11 and a conductive first electrode arranged at a predetermined pitch in the longitudinal direction of the insulator 11 and held by the insulator 11. The first contact 12 and a conductive second contact 13 that is arranged at a predetermined pitch in the longitudinal direction of the insulator 11 and is held by the insulator 11 are provided.

  The insulator 11 includes an installation plate portion 15 facing a substrate 14 such as a printed circuit board, a first insertion port 16 for inserting the first contact 12 from the front direction above the installation plate portion 15, and the first insertion port 16. A first contact accommodating portion 18 in which the first contact portion 17 of the first contact 12 faces upward in a continuous inside of the insertion port 16, and a cable insertion port for inserting a flat cable above the first insertion port 16 19 and a second insertion port 21 for inserting the second contact 13 from the rear side of the insulator 11, and corresponds to the upper position of the first contact accommodating portion 18 inside the second insertion port 21. The second contact accommodating portion 23 arranged so that the second contact portion 22 of the second contact 13 faces downward, and the ceiling positions of the second insertion opening 21 and the second contact accommodating portion 23. It is schematically configured from the top plate portion 24 for forming a.

  The first contact 12 is formed in a long shape, and one end portion is a first connection end portion 25 that is connected to a soldering portion of the substrate 14, and is bent and extended upward at a substantially central position. It is the structure provided with the convex 1st contact part 17 toward the upward direction in the edge part of one side.

  The second contact 13 is formed in a long shape, and one end portion is bent in a direction orthogonal to a second connection end portion 26 connected to the soldering portion of the substrate 14 and a position removed from the second connection end portion 26. Further, the second contact end portion 22 is bent in a direction orthogonal to the direction opposite to the second connection end portion 26, and the other end portion is provided with a convex second contact portion 22 facing downward.

As shown in FIGS. 5 to 7, the flat cable 27 has a configuration in which the back surfaces of the two cables 29 a and 29 b provided with the connection terminal portions 28 a and 28 b are bonded to each other and the connection terminal portions 28 a and 28 b are provided on both sides. ing. In the cables 29a and 29b to be bonded, a plurality of conductors 31 are arranged in parallel at a predetermined interval between the two insulating tapes 30a and 30b, and the conductors 31 at the end portions are exposed over a predetermined length, thereby connecting terminal portions 28a and 28b. The structure is provided.
In this way, by providing the connection terminal portions 28a and 28b on both sides, the number of poles can be doubled. For example, in the case of 0.5 mm pitch, the number of poles equivalent to 0.5 mm pitch can be secured by bonding two 1.0 mm pitch cables together.
As a result, the distance between the conductors is increased, so that the concern about short-circuiting is eliminated, and a connector and FPC / FFC with Sn plating can be selected, thereby contributing to cost.

  In the connector having such a structure, the first contact portion 17 is inserted into the first insertion port 16 from the first contact portion 17 side of the first contact 12 from the front side of the insulator 11 and the first contact portion 17 is moved upward. Arranged in a direction. And it inserts in the 2nd insertion port 21 from the 2nd contact part 22 side of the 2nd contact 13 from the back direction of the insulator 11, the 2nd contact part 22 is accommodated in the 2nd contact accommodating part 23, and a 2nd contact part It is arranged in a state of facing downward in a positional relationship facing 22.

  When the flat cable 27 having the connection terminal portions 28a and 28b on both sides is inserted into the cable insertion port 19 into the connector assembled in this manner, the connection terminal portion 28a on the surface is electrically connected to the second contact portion 22. Then, the connection terminal portion 28b on the back surface is engaged with the first contact portion 17 while maintaining the state of being electrically connected.

  By creating a connector and a cable that do not reduce the pitch interval even when the number of poles is large as described above, a structure that prevents a so-called short circuit due to the occurrence of whisker can be obtained.

  Next, the connector and cable of the second embodiment will be described below with reference to FIGS.

  As shown in FIG. 8, the connector of the second embodiment includes a substantially long box-shaped insulator 41 and a conductive first contact that is arranged at a predetermined pitch in the longitudinal direction of the insulator 41 and is held by the insulator 41. 42 and a conductive second contact 43 that is arranged at a predetermined pitch in the longitudinal direction of the insulator 41 and is held by the insulator 41 in the same manner as the first contact 42.

  The insulator 41 is disposed at a bottom position facing the substrate 44 such as a printed circuit board, and has a first contact engagement protrusion 45 that sandwiches the first arm portion 61 of the first contact 42 in the forward direction and a first direction in the rear direction. An installation plate 47 having a second contact engaging projection 46 that engages with the base end 63 of the two contacts 43, and a first contact 42 for inserting the first contact 42 from the front side on the side of the installation plate 47 A first insertion port 48, a first contact accommodating portion 51 in which the first contact portion 49 of the first contact 42 faces upward in a continuous interior of the first insertion port 48, and the first insertion port 48. A cable insertion port 52 for inserting the flat cable 67 at the upper portion and a second insertion port 53 for inserting the second contact 43 from the rear side of the insulator 41 are provided. In addition, the second contact accommodating portion 54 disposed so that the second contact portion of the second contact 43 faces upward in a position that is horizontally distant from the first contact accommodating portion 51, and the upper position of the installation plate portion 47 The support receiving portion 60 that supports the support portion 62 of the first contact 42, the top plate portion 55 that forms the ceiling position of the second insertion port 53 and the second contact accommodating portion 54, and the downward direction of the top plate portion 55. A guide portion 56 that extends from the front and guides the insertion direction of the flat cable 67 and the upper portion of the second arm 43 of the second contact 43 together with the top plate portion 55 at the upper portion, and a connection on the free end side of the guide portion 56 And a cable locking portion 57 for locking the flat cable 67 at the position.

  The first contact 42 is formed of a conductive member, one side separated from the base end portion 58 in a U shape forms a first contact support portion 59 having an elastic shape, and the other side is further separated in a U shape. The first arm portion 61 forms a support portion 62 on the other side. The first contact support portion 59 is provided with a first contact portion 49 facing upward at the tip of the first contact support portion 59.

  The second contact 43 is formed of a conductive member, and extends from the base end portion 63 in the vertically upward direction and separated into a U shape in the orthogonal direction. It has a configuration including an elastic second contact support portion 66 provided with a second contact portion 65 whose side is directed upward at the tip.

As shown in FIG. 9, the flat cable 67 is formed by bonding two cables 69a and 69b having connection terminal portions 68a and 68b so that the positions of the connection terminal portions 68a and 68b are shifted in the same direction on the same surface. It is configured. In the cables 69a and 69b to be bonded, a plurality of conductors 72 are arranged in parallel at a predetermined interval on two insulating tapes 71a and 71b, and the end portion of the conductor 72 is exposed over a predetermined length to connect the connection terminal portions 68a and 68b. The structure is provided.
By thus shifting the position in the same direction on the same surface and providing the two connection terminal portions 68a and 68b, the number of poles can be doubled. For example, in the case of 0.5 mm pitch, the number of poles equivalent to 0.5 mm pitch can be secured by bonding two 1.0 mm pitch cables together.
As a result, the distance between the conductors is increased, so that the concern about short-circuiting is eliminated, and a connector and FPC / FFC with Sn plating can be selected, thereby contributing to cost.

In the connector having such a configuration, when the first contact 42 is inserted from the first contact portion 49 side into the first insertion port 48 from the front side of the insulator 41, the first arm portion 61 and the support portion 62 are interposed. The first contact engaging protrusion 45 is engaged, the support portion 62 is supported by the support receiving portion 60, and the first contact portion 49 is arranged in the first contact accommodating portion 51 with the first contact portion 49 facing upward.
Then, the second arm portion 64 is inserted between the top plate portion 55 and the guide portion 56 by being inserted into the second insertion port 53 from the second contact portion 65 side of the second contact 43 from the rear side of the insulator 41. Thus, the second contact portion 65 is accommodated in the second contact accommodating portion 54, and the second contact portion 65 is disposed in a state of facing upward with a positional relationship shifted from the first contact portion 49 in the horizontal direction.

  When the flat cable 67 having the connection terminal portions 68a and 68b whose positions are shifted on the same surface is inserted into the connector thus assembled, the connection terminal portion 68a at the front end is connected to the second contact portion 65. The connection terminal portion 68b at the next end is engaged while maintaining the state of being electrically connected to the first contact portion 49.

  The connector of the present invention prepares contacts corresponding to the number of connection terminal portions in the insulator corresponding to a flat cable having a plurality of connection terminal portions, and connects the connection terminal portions and the contacts when the flat cable is inserted. By doing so, since the pitch between the terminals of the connection terminal portion can be widened even with a structure that obtains the desired number of poles, it is possible to provide a connector that can prevent a short circuit due to whisker generation.

It is a side view of the connector of 1st Example which concerns on this invention. FIG. 2 is a cross-sectional view of the connector. FIG. 2 is a front view of the connector. FIG. 2 is a plan view of the connector. It is a top view of the flat cable inserted in the connector of 1st Example. It is a side view of the flat cable. It is a rear view of a flat cable. It is sectional drawing of the connector of 2nd Example. It is a side view of the flat cable inserted in the connector of 2nd Example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11; Insulator, 12; 1st contact, 13; 2nd contact, 14; Board | substrate, 15; Installation board part, 16; 1st insertion port, 17; 1st contact part, 18; Cable insertion port, 21; second insertion port, 22; second contact portion, 23; second contact accommodating portion, 24; top plate portion, 25; first connection end portion, 26; second connection end portion, 27; Flat cable, 28a; Connection terminal, 28b; Connection terminal, 29a; Cable, 29b; Cable, 30a; Insulation tape, 30b; Insulation tape, 31; Conductor, 41; Insulator, 42; 2 contact 44; substrate 45; first contact engaging protrusion 46; second contact engaging protrusion 47; installation plate 48; first insertion port 49; first contact 51; first 1 contact housing 52; cable insertion port, 53; second insertion port, 54; second contact accommodating portion, 55; top plate portion, 56; guide portion, 57; cable locking portion, 58; base end portion, 59; Support portion 60; Support receiving portion 61; First arm portion 62; Support portion 63; Base end portion 64; Second arm portion 65; Second contact portion 66 66; Second contact support portion 67 Flat cable 68a; connection terminal portion 68b; connection terminal portion 69a; cable 69b; cable 71a; insulating tape 71b;

Claims (4)

An insulator, and conductive first and second contacts held by the insulator;
The insulator includes a first insertion port into which the first contact is inserted and a second insertion port into which the second contact is inserted,
The first contact is engaged with the first contact portion facing upward when inserted from the first insertion port, and the second contact is second contact portion when inserted from the second insertion port. Is engaged at a position facing the first contact portion of the first contact and facing downward. A plurality of conductors are arranged in parallel at regular intervals, the two conductors having a structure in which the conductors at the ends are exposed over a certain length and connection terminal portions are provided, and the connection terminal portions on both sides are bonded together. Forming a flat cable with
When the flat cable is inserted into the connector, an upper connection terminal portion is electrically connected to the second contact portion, and a lower connection terminal portion is electrically connected to the first contact portion. Item 10. The connector according to Item 1. An insulator, and conductive first and second contacts held by the insulator;
The insulator includes a first insertion port into which the first contact is inserted and a second insertion port into which the second contact is inserted,
The first contact is engaged with the first contact portion facing upward when inserted from the first insertion port, and the second contact is second contact portion when inserted from the second insertion port. Is engaged with the first contact portion being shifted from the first contact portion and facing upward. Two cables having a structure in which a plurality of conductors are arranged in parallel at regular intervals, the conductors at the end portions are exposed over a certain length, and connection terminal portions are provided are attached to each other by shifting the positions of the connection terminal portions. Forming a flat cable with two connection terminals in the direction,
When the flat cable is inserted into the connector, the connecting terminal portion at the front end is electrically connected to the second contact portion, and the connecting terminal portion at the next end is electrically connected to the first contact portion. The connector according to claim 3.

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