JPH0613057U - Flexible printed circuit board connector - Google Patents

Abstract

(57) [Abstract] [Purpose] A flexible printed circuit board connector having a multi-pole structure and improved reliability in connection with a flexible printed circuit board can be obtained. A pair of guide portions 43a and 43b extending in the arrangement direction of the terminal portions 61 are arranged in parallel on one side surface of the housing 40, and the terminal portions 61 are arranged in each of the one and the other guide portions 43a and 43b. The guides 43a, 4
One of the terminals 3b and the other terminal 61 of the flexible printed circuit board 5 is bent outward so that the directions of the tip portions thereof are opposite to each other.
It has a first insertion hole group 5a into which the terminal portion 61 on the side of a, 43b is inserted, and a second insertion hole group 5b into which the terminal portion 61 on the other or one of the guide portions 43a and 43b is inserted. By bending the flexible printed circuit board 5 along the guide portions 43a and 43b, the first and second insertion hole groups 5 can be formed.
a, 5b, terminal portions 6 protruding from the guide portions 43a, 43b
1 is inserted and soldered.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a multi-pole connector connected to a flexible printed circuit board.

[0002]

[Prior art]

 Conventionally, a connector 1 shown in FIG. 4A as this type of connector includes a housing 11 formed of a synthetic resin material and a plurality of pin contacts 12 arranged in the housing 11. The housing 11 has a box-like shape with an opening 11a into which a mating connector is fitted, and the bottom wall 11b has pin contacts 12 planted in four rows. The pin contact 12 penetrates the contact portion 12a located in the opening 11a of the housing 11 and the bottom wall 11b, extends outward, and is connected to the flexible print substrate (hereinafter, referred to as FPC) 2. It has 12b and one. The terminal portion 12b is drawn straight out from the bottom wall 11b and then bent at a right angle to the FPC2 side. Next, in order to attach the connector 1 to the FPC 2, the surface 11c on the bending direction side of the terminal portion 12b is brought into contact with the surface of the FPC 2, the terminal portion 12b is inserted into the corresponding insertion hole 2a of the FPC 2, and then the terminal portion 12b. And FPC2 are soldered. As a result, the connector 1 is attached such that the opening direction of the opening 11a (the fitting direction of the mating connector) is parallel to the surface of the FPC 2. Next, in the connector 3 shown in FIG. 4B, the terminal portion 31 a of the pin contact 31 is drawn straight out from the bottom wall 32 a of the housing 32. Therefore, when the connector 3 is attached to the FPC 2, the bottom wall 32a is brought into contact with the surface of the FPC 2 so that the opening direction of the housing 32 is perpendicular to the surface of the FPC 2.

[0003]

[Problems to be solved by the device]

 By the way, in the connector 1 shown in FIG. 4A, by changing the bending dimension (A and B dimensions in the figure) of the terminal portion 12b, the arrangement pitch of the tip end portion of the terminal portion 12b becomes the contact portion 12a of the pin contact 12. It is set larger than the arrangement pitch of. Therefore, when the FPC is manufactured, the pitch of the insertion holes 2a can be made large corresponding to the arrangement pitch of the tips of the terminal portions 12b, so that the wiring pattern 2b can be easily arranged between the adjacent insertion holes 2a. . However, in the connector 1 described above, since the terminal portion 12b is bent toward the surface 11c which is the mounting surface of the FPC, the length dimension of the terminal portion 12b greatly changes for each row of the pin contacts 12. Therefore, when the connector 1 is mounted on the system, there may be a problem in terms of signal transmission speed time lag and noise. On the other hand, in the connector 3 of FIG. 4B, since the terminal portion 31a is pulled out straight from the surface of the bottom wall 32a which is the mounting surface, the length of the terminal portion 31a is different for each row. However, the above problems are solved. However, in the connector 3, since the arrangement pitch of the contact portions 31b of the contacts 31 and the arrangement pitch of the terminal portions 31a are the same, the pitch of the terminal portions 31a also becomes small when attempting to make the connector multipolar. For this reason, when the FPC 2 is manufactured, the pitch of the insertion holes 2a must be made small corresponding to the pitch of the terminal portions 31a, which makes the manufacture difficult, and in fact, it was impossible to make the connector 3 multipolar. Therefore, in connection with the system mounting, as shown in FIG. 5, when connecting the connector 3 to the printed circuit board 21 via the FPC 2, the FPC 2 may be multi-layered or the number of the FPCs 2 used may be increased. (2 in the figure) may be connected, but the FPC was expensive and not economical. The present invention has been made to solve the above-mentioned drawbacks, and it is an object of the present invention to provide a connector for a flexible printed circuit board that is connected to a flexible printed circuit board with increased reliability while increasing the number of poles.

[0004]

[Means for Solving the Problems]

 The present invention provides a connector for a flexible printed circuit board, in which a plurality of terminal portions to be soldered to a flexible printed circuit board are projected in a plurality of rows from one side surface of the housing, wherein one side surface of the housing has an arrangement direction of the terminal portions. A pair of guides extending in parallel are provided side by side, and the above-mentioned terminal portions are guided in each row by one and the other guide portion, and the direction of the tip portion between one of the guide portions and the other terminal portion is set. Are bent outward so that they are opposite to each other. On the other hand, the flexible printed circuit board has a first insertion hole group into which the terminal portion of the one or the other guide portion is inserted and the other or the other. A second insertion hole group into which the terminal portion of one of the guide portions is inserted, and by bending the flexible printed circuit board along the guide portion, the flexible printed circuit board is placed above the first and second insertion hole groups. And inserting the terminal portion projecting from the guide portion is for soldering.

As described above, in the connector of the present invention, the terminal portions are guided in each row by the pair of guide portions of the housing, and the terminal portions of the one guide portion and the other guide portion are oriented so that their tips are oriented toward each other. It is bent outward so that it is opposite. As a result, the length of the terminal portion can be shortened as compared with the conventional one, and the dimensional difference of the terminal portion between columns is reduced, and the problems of signal transmission speed time lag and noise are improved. Further, since the terminal portion has a bent shape, the pitch of the front end portion of the terminal portion can be made larger than that of the conventional connector having the straight terminal portion. For this reason, the flexible printed circuit board can be easily manufactured, the number of poles of the connector can be increased, and the flexible printed circuit board connector with improved reliability in connection with the flexible printed circuit board can be obtained.

[0006]

【Example】

 An embodiment of the present invention will be described below with reference to the drawings. FIG. 1A is a perspective view of a connector 4 of the present invention, and FIGS. 1B and 1C show a state in which an FPC 5 is connected to the connector 4. The connector 4 has a plurality of pin contacts 6 arranged in a housing 40 in a four-row configuration. The housing 40 is formed of an insulating material into a substantially rectangular parallelepiped shape, and a fitting recess 41 into which a mating connector is fitted is provided on the front surface of the housing 40. A plurality of contact insertion holes 41a are arranged in four rows in the longitudinal direction on the bottom portion 41b of the fitting recess 41. The contact insertion holes 41a of each row are formed at equal pitches, and the pitches of the other rows are formed to be shifted in the longitudinal direction with reference to the contact insertion holes 41a of a predetermined row. On the rear surface side of the housing 40, side walls 42 and 42 are integrally projected from both ends in the longitudinal direction, and between the side walls 42 and 42, a pair of interiors 43a, 42a extending along the column direction of the contact insertion holes 41a, 43b are arranged in upper and lower stages. Grooves 44, which communicate with the contact insertion holes 41a and into which the terminal portions 61 of the pin contacts 6 are fitted, are provided on both side surfaces of the guide portions 43a and 43b. That is, a groove 44a communicating with the first-row contact insertion hole 41a is provided on one side surface of the upper guide portion 43a. In the groove 44a, an arc-shaped corner portion 45 serving as a fulcrum when the terminal portion 61 fitted in the groove 44a is bent is formed. The corner portions 45 are sequentially and alternately provided from the groove 44a on the one end side in the longitudinal direction, at a position near the bottom portion 41b of the fitting recess 41 and at a position slightly offset from the bottom portion 41b to the open end side of the groove 44a. A groove 44b communicating with the second-row contact insertion hole 41a is formed on the other side surface of the guide portion 43a. The corners 45 on the groove 44b side are provided alternately in sequence from the groove 44b on the one end side in the longitudinal direction at a position on the open end side of the groove 44b and a position slightly offset from the open end to the bottom part 41b side. Further, a groove 44c communicating with the contact insertion hole 41a in the third row and a groove 44d communicating with the contact insertion hole 41a in the fourth row are formed on both side surfaces of the lower guide portion 43b. Has been done. The corners 45 are arranged in the grooves 44c and 44d so as to be symmetrical to the corners 45 provided in the grooves 44a and 44b of the upper guide portion 43a and the central axis of the connector 4. There is. Next, when assembling the pin contacts 6 into the housing 40, the pin contacts 6 are press-fitted into the contact insertion holes 41a of the first and second rows and fitted into the grooves 44a and 44b of the guide portion 43a. The terminal portion 61 is bent outward at a substantially right angle with the corner portion 45 as a bending fulcrum. The pin contacts 6 press-fitted into the contact insertion holes 41a of the third and fourth rows have the terminal portion 61 fitted in the grooves 44c and 44d of the guide portion 43b and the corner portion 45 as the fulcrum. Bend the terminal portions 61 of the first row and second row pin contacts 6 in a direction substantially opposite to the bending direction of the terminal portion 61. In this way, the terminal portions 61 of the pin contact 6 which are assembled in the housing 40, bent at the corner portions 45, and project from the guide portions 43a and 43b are arranged in four rows in the longitudinal direction, and between each row. It has a staggered arrangement. The terminal portion 61 projects at the same height from the surface of the guide portion 43a on the groove 44a side and the surface of the guide portion 43b on the groove 44d side. On the other hand, as shown in FIG. 3, the FPC 5 has an insertion hole group 5a in which a plurality of insertion holes 51 are arranged along the vicinity of one end side where the connector 4 is attached. Further, the insertion hole group 5b is arranged at a predetermined distance from the insertion hole group 5a, and the terminal portion 61 protruding from the guide portion 43a or 43b is inserted into the insertion hole group 5a, 5b. Further, an insertion hole group 5c to which a printed circuit board side connector is attached is arranged on the other end side surface of the FPC 5. Next, in order to connect the connector 4 to the FPC 5, first, the insertion hole group 5a side of the FPC 5 is positioned on the groove portion 44d of the guide portion 43b of the housing 40, and the guide hole 43b is inserted into the insertion hole 51 of the insertion hole group 5a. The protruding terminal portion 61 is inserted and soldered. After that, the FPC 5 is bent at a right angle along the end face of the guide portion 43b, and further, the insertion hole 51 of the insertion hole group 5b is bent at a substantially right angle inward so as to face the terminal portion 61 protruding from the guide portion 43a. Can be folded. Next, after inserting the terminal portion 61 into the insertion hole 51 of the insertion hole group 5b and soldering, the FPC 5 is folded back to the rear side at the base end side of the guide portion 43a. A printed circuit board connector 7 is attached to the insertion hole group 5c on the other end side of the folded FPC 5 as shown in FIG. By connecting the connector 7 for the printed board to the connector 9 mounted on the printed board 8, the connector 4 is connected to the printed board 8 through the FPC 5. In FIG. 2B, the insertion hole group 5a of the FPC 5 is arranged on the guide part 43a side of the connector 4 and the insertion hole group 5b of the FPC 5 is arranged on the guide part 43b side. And FPC5 are connected.

[0007]

[Effect of device]

 As described in the above embodiment, the invention is such that the terminal portions are guided in each row by a pair of guide portions projecting from the rear surface of the housing, and the tip portions of the one guide portion and the other guide portion end. The parts are bent outward so that the parts face in opposite directions. Therefore, the length of the terminal can be shortened compared to the case where the terminal is bent in the same direction as in the conventional example, and the dimensional difference of the terminal between each row is reduced, resulting in a signal transmission speed time lag and noise. Problems such as are improved. Further, by changing the bending position of the terminal portion, the arrangement pitch on the tip end side of the terminal portion can be made larger than that on the contact portion of the contact. As a result, when the FPC is manufactured, the arrangement pitch of the insertion holes can be increased corresponding to the arrangement pitch of the tip portions of the terminal portions, so that the FPC can be easily manufactured and the connector can have multiple poles. Furthermore, it is possible to connect the FPC to the FPC with a single sheet or a small number of sheets without forming the FPC into multiple layers, and thus it is possible to obtain a flexible printed circuit board connector that can reduce costs.

[Brief description of drawings]

1A is a perspective view of a connector according to an embodiment of the present invention, FIG. 1B is a cross-sectional view showing a connection state between a connector of FIG. 1A and a flexible printed circuit board, and FIG. A-A arrow view

2A and 2B are explanatory views showing a mounted state of the connector of FIG.

[Fig. 3] Development view of a flexible printed circuit board

4A and 4B are cross-sectional views illustrating a conventional connector.

FIG. 5 is an explanatory view showing a mounted state of a conventional connector.

[Explanation of symbols]

 4 Flexible Printed Circuit Board Connector 40 Housing 43a, 43b Guide Section 5 Flexible Printed Circuit Board 5a, 5b Insertion Hole Group 61 Terminal Section

Claims (1)

[Scope of utility model registration request] 1. A connector for a flexible printed circuit board, wherein a plurality of terminal portions to be soldered to the flexible printed circuit board are projected from one side surface of the housing in a plurality of rows. A pair of guide portions extending in the arrangement direction are arranged side by side, and the terminal portions are guided to each of the one and the other guide portions in each row, and a tip portion is provided between one of the guide portions and the other terminal portion. Are bent outward so that the directions thereof are opposite to each other. On the other hand, the flexible printed circuit board includes a first insertion hole group into which the terminal portion of the one or the other guide portion is inserted, and the other or one of the other insertion hole groups. A second insertion hole group into which the terminal portion of the guide portion is inserted, and by bending the flexible printed circuit board along the guide portion, the first and second
A connector for a flexible printed circuit board, wherein a terminal portion protruding from the guide portion is inserted into the insertion hole group and soldered.