JPH067177U - Electrical connector - Google Patents

Abstract

(57) [Abstract] [Purpose] While the FPC is locked by pressing the contact metal fitting to the FPC, the FPC is hard to come off from the connector body, and the cover member and the FPC are incompletely mounted and locked (EN) Provided is an electrical connector which is prevented from being left in a state. [Structure] In a connector body, a portion corresponding to a bottom wall portion located directly under a front half of the contact fitting 15 is deleted, and a base portion 15a of the contact fitting 15 is attached to a cover member 13.
Between the pressing piece 15c and the pressing piece 15c.
A pressing portion 13d that holds the FPC 4 therebetween is provided, and a protruding holding portion 13f that holds the tip of the base portion 15a of the contact fitting 15 between the pressing portion 13d and the pressing portion 13d is provided.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an electric connector adapted to lock a flexible printed circuit board (hereinafter abbreviated as FPC) inserted in a connector body by a cover member mounted on the connector body mounted on the board.

[0002]

[Prior art]

 FIG. 4 shows a conventional example of this type of FPC electrical connector. The electrical connector 1 of this example comprises a connector body 2 mounted on a board and a cover member 3 attached to the connector body 2. The connector body 2 includes a top wall portion 2b, a bottom wall portion 2c, and a rear wall portion 2d. It has a box shape having an opening 2a for inserting the FPC 4 on its front side, and a plurality of contact fittings 5 that are brought into contact with the FPC 4 are fixed to the inside.

The contact fitting 5 includes a base portion 5a fixed to the bottom wall portion 2c of the connector body 2, a rising portion 5b rising from the base portion 5a, and a pressing piece protruding from the rising portion 5b along the base portion 5a. And the tip 5d of the pressing piece 5c is elastically brought into contact with the FPC 4. Further, a foot portion 5e is projectingly provided on the base 5a side of the contact fitting 5, and the foot portion 5e is connected to a wiring pattern of a substrate (not shown). In the connector body 2, a contact fitting 5 having a foot portion 5e formed on the front side and a contact fitting 5 formed on the rear side are alternately juxtaposed and fixed.

On the other hand, the cover member 3 has an insertion opening 3a having a tapered portion into which the FPC 4 is guided and inserted, and the FPC 4 inserted into the connector body 2 through the insertion opening 3a. A pressing portion 3c is provided for pressing the contact fitting 5 against the contact fitting 5.

In the electrical connector 1 having such a configuration, the tip side of the FPC 4 is inserted into the connector body 2 through the insertion port 3a of the cover member 3, and the contact portion formed on the tip side is inserted. The contact member 5 is positioned below the pressing piece 5c, and in this state, the cover member 3 is slid horizontally and pushed. As a result, as shown in FIG. 5, the tip of the FPC 4 is clamped and held by the pressing piece 5c and the pressing portion 3c, the FPC 4 and the contact fitting 5 are electrically connected, and the FPC 4 is locked. R.

Further, when the FPC 4 is unlocked, the cover member 3 is slid horizontally from the state shown in FIG. 5 and pulled out to the position shown in FIG. As a result, the holding condition of the FPC 4 is released, and the FPC 4 is pulled out from the insertion port 3a.

[0007]

[Problems to be solved by the device]

 By the way, in recent years, there have been increasing demands for downsizing and thinning of electronic devices, and accordingly, the electric connector 1 for the FPC as described above should be thinned as much as possible, that is, to the substrate. It may be strongly required to reduce the mounting height.

Further, in the electrical connector 1 as described above, it is also desired to minimize the stress due to the heat of the solder received from the board during mounting on the board.

As one measure to meet the above demands, it is conceivable to delete the bottom wall portion 2c located directly below the base portion 5a of the contact fitting 5 in the connector body 2, but in this case, The spring pressure of the contact metal fitting 5 cannot be sufficiently supported, the holding of the contact metal fitting 5 becomes unstable, the contact metal fitting 5 is likely to be tilted or its base portion 5a is easily bent, and the connection with the FPC 4 may be poor or the board may be damaged. There may be a short circuit or other trouble.

In view of the above points, the present invention can reduce the mounting height on the board by making it as thin as possible, and minimize the stress due to the heat of the solder received from the board. It is an object of the present invention to provide an electric connector for FPC, which is capable of maintaining the contact metal fittings in a stable manner.

[0011]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the electrical connector according to the present invention comprises a connector body to which a plurality of contact fittings that are brought into contact with a flexible printed circuit board inserted therein are fixed, and the contact body mounted on the connector body. And a cover member for pressing the flexible printed circuit board against the metal fitting to lock the flexible printed circuit board in the connector body. The contact metal fitting has a ceiling wall portion, a rear wall portion having a slit into which the contact metal fitting is inserted, and a holding wall portion provided so as to cross the slit. The part corresponding to the bottom wall located directly below the front half of the connector has been deleted, and the contact metal fitting has a base end between the retaining wall of the connector body and the slit bottom of the rear wall. The base member is sandwiched and has its tip side protruding in the horizontal direction, a rising portion rising from the base portion, and a pressing piece portion protruding from the rising portion in a direction along the base portion. A pressing part that is inserted between the base of the contact fitting and the pressing piece so that the flexible printed board can be sandwiched between the pressing piece and the contact fitting between the pressing part. It is characterized in that it is to have a, a projecting pinching portion which is adapted to obtain sandwich the distal end of the base portion.

[0012]

[Action]

 In the electrical connector according to the present invention configured as described above, there is no portion corresponding to the bottom wall portion located directly below the contact fitting in the connector body, which is present in the conventional connector, and therefore, The thickness of the connector body can be reduced by a thickness corresponding to the thickness of the bottom wall portion, and the mounting height on the board can be reduced.

Further, since there is no meat portion of the connector body in a portion located directly below the contact metal fitting, and only a protruding holding portion is provided on the cover member side, it is mounted on the board. At this time, the contact area with the board is significantly smaller than that of the conventional type, and as a result, the stress due to the heat of the solder received from the board can be effectively reduced.

Further, the cover member is provided with a projecting holding portion capable of holding the tip of the base portion of the contact fitting between the cover member and the pressing portion, so that the spring pressure of the contact fitting is sufficiently supported. Therefore, the holding of the contact fitting is stable, the contact fitting is less likely to be tilted or its base is bent, and problems such as poor connection with the FPC and short circuit with the board are less likely to occur.

[0015]

【Example】

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 3 show an embodiment of an electric connector for an FPC according to the present invention. An electric connector 10 according to the present embodiment includes a connector body 12 mounted on a board and a cover member 13 attached thereto. And a contact fitting 15.

The connector body 12 includes a top wall portion 12b, a rear wall portion 12d formed with slits 12e (FIG. 3) into which a large number (here, 20) of contact fittings 15 are inserted, and the above slits 12e. It has a holding wall portion 12c for holding the contact fitting 15, which is provided so as to cross, and an opening 12a for inserting the FPC 4 is formed on the front side of the connector body 12. There is no portion corresponding to the bottom wall portion located directly below the contact fitting 15, and as can be seen clearly in FIG. 3, the mounting surfaces 12h having a relatively small area which are brought into contact with the substrate are provided on both left and right sides. Is provided with a side wall portion 12f.

Inside the connector body 12, a contact metal fitting 15 that is brought into contact with the FPC 4 is inserted and fixed in each of the slits 12e. The contact fitting 15 has a base portion 15a whose base end side is sandwiched between the holding wall portion 12c of the connector body 12 and the slit bottom portion 12i of the rear wall portion 12d, and a front end side of which protrudes in the horizontal direction, and from this base portion 15a. The rising part 15b, the pressing piece part 15c protruding from the rising part 15b in the direction along the base part 15a so that the FPC 4 can be sandwiched between the tip part 15d and the cover member 13, and the rising part 15b. It has a pressing piece portion 15c at the center and a foot portion 15e projecting rearward on the opposite side, and the foot portion 15e is connected to a wiring pattern of a substrate (not shown).

On the other hand, the cover member 13 is formed with an insertion opening 13 a having a tapered portion into which the FPC 4 is guided and inserted, and the FPC 4 is attached to the contact fitting 15 with the insertion opening 13 a. Is provided with a pressing portion 13d that presses toward the pressing piece portion 15c side, and a protruding holding portion 13f that can hold the tip portion of the base portion 15a of the contact fitting 15 with the pressing portion 13d is provided. It is provided.

Although not shown in the figure, the side wall portion 12f of the connector body 12 and the both side portions of the cover member 13 are locked to each other when the cover member 13 is mounted on the connector body 12. A locking portion and a hook portion are provided for keeping the same.

In the electrical connector 10 of this embodiment having such a configuration, the tip side of the FPC 4 is inserted into the connector body 12 via the upper portion of the insertion port 13a of the cover member 13 and formed on the tip side. The contact point thus formed is positioned below the pressing piece 15c of each contact fitting 15, and in this state, the cover member 13 is slid horizontally to connect the pressing portion 13d to the base 15a of the contact fitting 15 and the FPC 4. Push in between. As a result, as shown in FIG. 2, the pressing portion 13d of the cover member 13 presses the pressing piece 15c of the contact tool 15 via the FPC 4, and the FPC 4 is pressed against the tip 15d of the pressing piece 15c. .

As a result, the tip of the FPC 4 is clamped and held by the pressing piece 15c and the pressing portion 13d, the FPC 4 and the contact fitting 15 are electrically connected, and the FPC 4 is locked.

When the cover member 13 is mounted as described above, the tip of the contact fitting 15 is clamped between the pressing portion 13d and the protruding clamping portion 13f.

According to the configuration as described above, there is no portion corresponding to the bottom wall portion located directly below the contact fitting 15 in the connector body 12 which is present in the conventional type, and accordingly, such a bottom portion is provided. The thickness of the connector body 12 can be reduced by a thickness corresponding to the wall thickness of the wall portion, and the mounting height on the board can be reduced.

Furthermore, since the meat portion of the connector body 12 does not exist in the portion located directly below the contact fitting 15 and only the protruding holding portion 13f is provided on the cover member 13 side, the protruding holding portion 13f is provided on the substrate. When mounted on, the contact area with the board is significantly smaller than that of the conventional type, and as a result, stress due to the heat of the solder received from the board can be effectively reduced.

Further, since the cover member 13 is provided with the projecting holding portion 13f which holds the tip end portion of the base portion 15a of the contact fitting 15 between the cover member 13 and the pressing portion 13d, the spring pressure of the contact fitting 15 is sufficiently increased. It can be supported, the holding of the contact fitting 15 is stable, the contact fitting 15 is less likely to be tilted or its base is bent, and problems such as poor connection with the FPC and short circuit with the board are less likely to occur.

[0026]

[Effect of device]

 As is clear from the above description, according to the present invention, it is possible to effectively reduce the thickness of the electrical connector and reduce the mounting height on the board, and to minimize the stress due to the heat of the solder received from the board. It has an excellent effect that it can be suppressed to the limit and that the contact metal can be stably held.

[Brief description of drawings]

FIG. 1 is an exploded sectional view showing an embodiment of an electric connector according to the present invention.

FIG. 2 is an assembled sectional view showing an embodiment of an electric connector according to the present invention.

FIG. 3 is a perspective view showing an embodiment of an electric connector according to the present invention.

FIG. 4 is an exploded sectional view showing an example of a conventional electric connector.

FIG. 5 is an assembled sectional view showing an example of a conventional electric connector.

[Explanation of symbols]

 4 FPC 10 Electric connector 12 Connector body 12b Top wall part 12c Holding part 12d Rear wall part 12e Slit 12i Solit bottom part 13 Cover member 13d Pressing part 13f Projection clamping part 15 Contact metal fittings 15a Base part 15b Standing part 15c Pressing piece part

Claims (1)

[Scope of utility model registration request] 1. A connector main body having a plurality of contact metal fittings fixed to be brought into contact with a flexible printed circuit board inserted therein, and a flexible printed circuit board mounted on the connector main body and pressing the flexible printed circuit board against the contact metal fittings. An electrical connector comprising: a cover member that locks a board in the connector body, wherein the contact fitting includes a top wall portion, a rear wall portion having a slit into which the contact fitting is inserted, and the slit. And a holding wall portion provided so as to cross, and a portion corresponding to a bottom wall portion located directly under the front half of the contact metal fitting is deleted, and the contact metal fitting has a base end side of the connector main body. A base part which is sandwiched between the holding wall part and the slit bottom part of the rear wall part and whose front end projects in the horizontal direction. , A rising portion rising from the base portion and a pressing piece portion protruding from the rising portion in a direction along the base portion, the cover member is inserted between the base portion and the pressing piece portion of the contact fitting. A pressing portion adapted to sandwich the flexible printed circuit board between the pressing piece portion and a protruding clamping portion adapted to sandwich the tip end portion of the base portion of the contact fitting between the pressing portion, An electrical connector, comprising: