JP6181991B2 - Flexible printed circuit board connector connection structure - Google Patents

Description

  The present invention relates to an FPC connector connection structure for connecting a flexible printed circuit board (hereinafter sometimes abbreviated as FPC) to a front flip lock type board connector.

  6 shows an FPC connector connection structure disclosed in Patent Document 1 below, and FIG. 7 shows an FPC connector connection structure disclosed in Non-Patent Document 1 below.

  Each of the FPC connector connection structures shown in FIGS. 6 and 7 includes an FPC insertion hole 110 into which the board connector 100 inserts the connection end portion 310 of the FPC 300, and the FPC insertion hole 110 to prevent the FPC 300 from coming off. And a stopper 120. The arrow X1 shown in FIGS. 6 and 7 indicates the insertion direction of the FPC 300 with respect to the board connector 100.

  A plurality of lead wires 320 are exposed at the connection end 310 of the FPC 300. The plurality of lead wires 320 of the FPC 300 are covered with an overcoat layer 330 made of an insulating resin film or the like other than the connection end portion 310.

  By the way, in the FPC connector connection structure, in order to prevent an oversight of a connection failure, it is required that it can be easily visually discriminated whether or not the FPC 300 is properly inserted into the board connector 100.

  Therefore, in the case of the FPC connector connection structure disclosed in Patent Document 1, the FPC 300 is provided on both sides of the region exposed to the outside of the board connector 100 when insertion into the FPC insertion hole 110 is properly completed. Is protruding. Further, the stopper 120 is equipped with an ear pressing portion 125 that abuts the rear end of the ear portion 350 of the FPC 300 that has been properly inserted into the FPC insertion hole 110 and restricts the movement of the FPC 300 in the removal direction. Yes.

  Thereby, when the insertion operation of the FPC 300 and the stopper 120 into the FPC insertion hole 110 is completed, the ear portion 350 exposed to the outside of the board connector 100 and the ear pressing portion 125 are in proper contact with each other. It is possible to determine whether or not the FPC 300 is properly inserted into the board connector 100 by visually checking whether or not.

  In the case of the FPC connector connection structure disclosed in Non-Patent Document 1, the rear end of the stopper 120 when the FPC 300 is properly pushed into the FPC insertion hole 110 into the circuit board 200 on which the board connector 100 is mounted. The mark 210 which shows the position of is equipped. As a result, when the insertion work of the FPC 300 and the stopper 120 into the FPC insertion hole 110 is completed, the FPC 300 can be properly used for the board by visually checking whether or not the rear end of the stopper 120 exceeds the mark 210. It is possible to determine whether or not the connector 100 is inserted.

Japanese Utility Model Publication No. 7-19978 Japan Society of Invention and Innovation Technical Bulletin No. 2005-506770

  By the way, in recent years, as a board connector for connecting an FPC, a front flip lock type connector having a structure different from that of the board connector 100 described in Patent Document 1 and Non-Patent Document 1 has been developed.

  The board connector is closed with a terminal arrangement portion in which a plurality of connection terminals connected to a plurality of lead wires of the FPC are arranged in a plane at a predetermined arrangement pitch, and the upper portion of the terminal arrangement portion is openable and closable. In the state, it has a structure including an open / close cover that presses the flexible printed circuit board placed on the terminal placement portion against the terminal placement portion.

  In the case of such a front flip lock type board connector, there is an urgent need to develop a connector connection structure that can easily determine whether or not the FPC is properly inserted into the board connector when connecting the FPC. It was.

  Accordingly, an object of the present invention is to solve the above-mentioned problems, and when an FPC is connected to a front flip lock type board connector, whether or not the FPC is properly attached to the board connector is visually confirmed. An object of the present invention is to provide an FPC connector connection structure that can be easily discriminated.

The above-described object of the present invention is achieved by the following configuration.
(1) A terminal arrangement portion in which a plurality of connection terminals to be connected to a plurality of lead wires of a flexible printed circuit board are arranged in a plane at a predetermined arrangement pitch, and a state where the upper portion of the terminal arrangement portion is covered and opened and closed Then, an open / close cover that presses the flexible printed board placed on the terminal placement portion against the terminal placement portion, and a flexible print that connects the flexible printed board to a board connector mounted on the circuit board A board connector connection structure,
The flexible printed circuit board is a resin provided in a laminated state on a surface opposite to the surface on which the connection end portion is exposed and the terminal arrangement portion is exposed and the connection end portion is provided. A protective plate made of, and an indicator portion equipped at a position away from the connection end by a predetermined distance on both sides in the width direction of the portion leading out of the board connector of the protective plate,
On the surface of the circuit board on which the board connector is mounted, when the insertion length of the connection end part of the flexible printed board to the terminal arrangement part is an appropriate value, the index part and the position in the insertion direction are Equipped with a mark in the first position to align,
The indicator portion is a concave portion recessed inward in the width direction on both side surfaces in the width direction of the flexible printed board, or a convex portion protruding outward in the width direction,
The mark includes a first pattern formed on a surface of the circuit board in a region closer to the board connector than the first position in the insertion direction, and the board connector side from the first position in the insertion direction. And a second pattern formed in a region on the opposite side of the flexible printed circuit board, and a blank linear shape that traverses in the width direction between the respective positions on the outer side in the width direction from both end positions in the width direction of the flexible printed circuit board A connector connection structure for a flexible printed circuit board characterized by a pattern.

(2) Engaging portions are provided on both sides of the front end portion of the protective plate inserted into the board connector.
The above (1), characterized in that on both sides of the terminal arrangement portion, there are provided lock portions that engage with the engagement portion and restrict movement of the flexible printed circuit board in the extending direction of the lead wire. Connector connection structure of flexible printed circuit board as described in 1.

  According to the configuration of (1) above, the board connector for connecting the FPC covers the upper portion of the terminal arrangement portion so as to be openable and closable, and presses the FPC placed on the terminal arrangement portion against the terminal arrangement portion in the closed state. It is a front flip lock type connector provided with an open / close cover. When the mounting of the FPC to the board connector is properly completed, the position of the indicator portion provided on the FPC protective plate is aligned with the position of the mark on the surface of the circuit board. Therefore, after completion of the FPC mounting operation, whether or not the FPC is properly mounted on the board connector by visually checking whether or not the position of the index portion is aligned with the position of the mark on the surface of the circuit board. Can be easily determined.

  According to the configuration of (2) above, when the FPC is properly attached to the board connector, the lock parts provided on both sides of the terminal arrangement part of the board connector are the front end of the FPC protective plate. Is engaged with the engaging portions on both sides of the FPC to restrict the movement of the FPC in the extending direction of the lead wire.

  Therefore, it is possible to prevent the FPC from coming off the board connector due to the tension acting on the FPC, and to improve the connection reliability between the board connector and the FPC.

  According to the FPC connector connection structure of the present invention, when an FPC is connected to a front flip lock type board connector, it is easily determined visually whether or not the FPC is properly attached to the board connector. Can do.

  The present invention has been briefly described above. Further, the details of the present invention will be further clarified by reading through a mode for carrying out the invention described below (hereinafter referred to as “embodiment”) with reference to the accompanying drawings. .

FIG. 1 is a perspective view showing a state before an FPC is connected to a board connector in an embodiment of an FPC connector connection structure according to the present invention. FIG. 2 is a plan view showing a state in which the connection of the FPC to the board connector is completed in the FPC connector connection structure according to the embodiment of the present invention. FIG. 3A is a perspective view showing a state before the engaging portions equipped in the FPC are engaged with the lock portions on both sides of the terminal arrangement portion in the FPC connector connection structure according to the embodiment of the present invention; FIG. 3B is a perspective view illustrating a modification of the engaging portion. FIG. 4 is a perspective view showing a modification of the engaging portion and the locking portion according to the present invention. FIG. 5 is a plan view showing a modification of the indicator portion according to the present invention. FIG. 6 is an exploded perspective view of a conventional FPC connector connection structure. FIG. 7 is a plan view of another conventional FPC connector connection structure.

  DESCRIPTION OF EMBODIMENTS Hereinafter, preferred embodiments of an FPC connector connection structure according to the present invention will be described in detail with reference to the drawings.

  1 to 3 show an embodiment of an FPC connector connection structure according to the present invention. FIG. 1 shows an FPC connector connection structure according to an embodiment of the present invention, in which an FPC is connected to a board connector. FIG. 2 is a perspective view showing the previous state, FIG. 2 is a plan view of the FPC connector connection structure according to one embodiment of the present invention, and the connection of the FPC to the board connector is completed, and FIG. FIG. 3B is a perspective view showing a state before the engaging portion provided in the FPC engages with the lock portions on both sides of the terminal arrangement portion in the FPC connector connection structure according to the embodiment; FIG. FIG.

  The FPC connector connection structure of this embodiment is a structure in which the FPC 30 is connected to the board connector 20 mounted on the circuit board 10.

  The circuit board 10 is provided with a substantially linear mark 12 on the surface 11 on which the board connector 20 is mounted. The mark 12 is a blank linear pattern sandwiched between two patterns 13 and 14 formed on the surface 11. The patterns 13 and 14 are patterns formed on the surface 11 of the circuit board 10 by, for example, silk printing. Further, in the case of the present embodiment, as shown in FIG. 1, the mark 12 moves the FPC 30 in the width direction (in the direction of the arrow W1 in FIG. ). The position of the mark 12 is aligned with the indicator portion 35 provided in the FPC 30 when the insertion length of the connecting end portion 31 of the FPC 30 described later into the terminal arrangement portion 24 is an appropriate value.

  The board connector 20 of the present embodiment is a front flip lock type connector, and includes a housing 21 fixed to the circuit board 10 and an opening / closing cover 22 rotatably attached to the housing 21. An arrow R <b> 1 illustrated in FIG. 1 indicates a rotation direction of the opening / closing cover 22.

  The housing 21 includes a terminal arrangement portion 24 on which a connection end portion 31 of an FPC 30 described later is placed, and a lock portion 25 that engages with a distal end portion of a protection plate 32 of the FPC 30 described later.

  In the terminal arrangement portion 24, a plurality of connection terminals 241 connected to a plurality of lead wires (not shown) of the FPC 30 are arranged in a plane at a predetermined arrangement pitch. When a connection end portion 31 of an FPC 30 described later is placed on the terminal arrangement portion 24, a plurality of lead wires exposed at the connection end portion 31 are in contact with the corresponding connection terminal 241.

  The lock portion 25 is a protruding piece that engages with an engagement portion 34 of the FPC 30 described later, and is provided on both sides of the terminal arrangement portion 24. The lock portion 25 engages with a rear edge portion 34a of the engaging portion 34 of the FPC 30 described later, and restricts the movement of the FPC 30 in the extending direction of the lead wire.

  The opening / closing cover 22 covers the upper side of the terminal arrangement portion 24 so as to be opened and closed. When the open / close cover 22 is closed as shown in FIG. 2, the FPC 30 placed on the terminal placement portion 24 is pressed against the terminal placement portion 24 so that each lead wire on the FPC 30 is connected to the terminal placement portion. The state of being connected to the 24 connection terminals 241 is maintained.

  The FPC 30 includes a connection end portion 31 on one end surface (the back surface in FIG. 1). The connection end 31 is a portion that is overlapped with the terminal arrangement portion 24, and a plurality of lead wires are exposed. A plurality of lead wires of the FPC 30 are covered with an overcoat layer made of an insulating resin film or the like other than the connection end portion 31.

  A protective plate 32 made of resin is provided on the surface of the FPC 30 opposite to the surface on which the connection end 31 is provided. The protective plate 32 is provided in a laminated state on the overcoat layer of the FPC 30. The protective plate 32 is fixedly mounted on the FPC 30 by bonding with an adhesive or the like as appropriate. In the case of the present embodiment, as shown in FIG. 2, the protective plate 32 is set to have a length L1 (see FIG. 1) so as to extend to a position exceeding the position of the mark 12 on the circuit board 10. ing.

  As shown in FIG. 1, the FPC 30 of the present embodiment includes an engaging portion 34 and an index portion 35.

  The engaging portions 34 are provided on both sides of the distal end portion of the protection plate 32 inserted into the board connector 20. The engagement portion 34 is a protrusion that engages with the lock portions 25 provided on both sides of the terminal arrangement portion 24 when the connection end portion 31 of the FPC 30 is placed on the terminal arrangement portion 24 of the board connector 20. It is a piece. As shown in FIG. 3, the rear edge portion 34a of the engaging portion 34 is engaged with the front edge 25a of the lock portion 25, whereby the lead wire extending direction of the FPC 30 (in the direction of arrow Y1 in FIG. 3). Movement to is regulated.

  The engaging portion 34 may have a concave shape formed on the protective plate 32 as shown in FIG. In this case, the front end 34b of the engaging portion 34 is engaged with the front edge 25a of the lock portion 25, so that the movement of the FPC 30 in the extending direction of the lead wire (the arrow Y1 direction in FIG. 3) is restricted.

  The indicator portions 35 are provided on both sides of a portion of the protective plate 32 that leads to the outside of the board connector 20. The indicator part 35 of this embodiment is a recessed part. When the insertion length of the connection end portion 31 of the FPC 30 into the terminal arrangement portion 24 is an appropriate value, the indicator portion 35 of this embodiment overlaps the mark 12 on the circuit board 10 as shown in FIG. Are provided at a position away from the connection end 31 by a predetermined distance.

  In the FPC connector connection structure of the present embodiment described above, the board connector 20 to which the FPC 30 is connected covers the terminal arrangement part 24 so as to be openable and closable and is placed on the terminal arrangement part 24 in the closed state. This is a front flip lock type connector including an opening / closing cover 22 that presses the FPC 30 against the terminal arrangement portion 24.

  When the mounting of the FPC 30 to the board connector 20 is properly completed, the position of the indicator portion 35 provided on the protection plate 32 of the FPC 30 is aligned with the position of the mark 12 on the surface 11 of the circuit board 10. . Therefore, after the mounting operation of the FPC 30 is completed, the FPC 30 can be properly connected to the board connector 20 by visually checking whether or not the position of the index portion 35 is aligned with the position of the mark 12 on the surface 11 of the circuit board 10. It is possible to easily determine whether or not it is attached.

  For example, when the mark 12 is not located in the recesses of the two indicator portions 35, it can be determined that the FPC 30 is not properly mounted. In addition, when the positions of the marks 12 with respect to the two indicator portions 35 are different, it can be determined that the FPC 30 is mounted obliquely.

  Further, in the case of the FPC connector connection structure of the present embodiment, when the FPC 30 is properly attached to the board connector 20, as shown in FIG. 3, it is provided on both sides of the terminal arrangement portion 24 of the board connector 20. The equipped lock portion 25 engages with the engaging portions 34 on both sides of the front end portion of the protection plate 32 of the FPC 30 to restrict the movement of the FPC 30 in the extending direction of the lead wire.

  Therefore, it is possible to prevent the FPC 30 from coming off the board connector 20 due to the tension acting on the FPC 30, and the connection reliability between the board connector 20 and the FPC 30 can be improved.

  In addition, this invention is not limited to embodiment mentioned above, A deformation | transformation, improvement, etc. are possible suitably. In addition, the material, shape, dimensions, number, arrangement location, and the like of each component in the above-described embodiment are arbitrary and are not limited as long as the present invention can be achieved.

  For example, the engaging portions 34 provided on both sides of the front end portion of the protection plate 32 for preventing the FPC from being detached are not limited to the projecting pieces shown in FIG. 1, but as shown in FIG. You may make it the concave shape which the lock part 25 engages.

  Further, the specific shape of the indicator portion mounted on the protective plate 32 for visual discrimination as to whether or not the FPC is properly attached to the board connector is not limited to the concave portion shown in FIG. As shown in FIG. 5, the indicator portion 35 provided on the protection plate 32 may be a convex portion that overlaps the mark 12 on the circuit board 10. Further, when forming the index portion 35, for example, by forming a triangular concave or convex portion with a sharp tip, it is possible to determine the degree of matching with higher accuracy. The indicator portion can be a position indicating line printed on the protective plate 32.

  Here, the features of the embodiment of the connector connection structure of the flexible printed circuit board according to the present invention described above are briefly summarized and listed in the following [1] to [2], respectively.

[1] A terminal arrangement part (24) in which a plurality of connection terminals (241) connected to a plurality of lead wires of the flexible printed circuit board (30) are arranged in a plane at a predetermined arrangement pitch, and the terminal arrangement part (24 An open / close cover (22) that presses the flexible printed circuit board (30) placed on the terminal arrangement part (24) against the terminal arrangement part (24) in a state of covering and closing the upper part of A flexible printed circuit board connector connection structure for connecting the flexible printed circuit board (30) to a board connector (20) mounted on the circuit board (10),
The flexible printed circuit board (30) has a connection end portion (31) where the plurality of lead wires are exposed and overlapped with the terminal arrangement portion (24), and a surface on which the connection end portion (31) is provided. The protective plate (32) made of resin provided in a laminated state on the opposite side surface, and the connection end (31) on both sides of the portion leading out of the board connector (20) of the protective plate (32). And an indicator part (35) mounted at a predetermined distance from
On the surface (11) of the circuit board (10) on which the board connector (20) is mounted, the connection end part (31) of the flexible printed board (30) is connected to the terminal arrangement part (24). A flexible printed circuit board connector connection structure comprising a mark (12) whose position is aligned with the indicator portion (35) when the insertion length is an appropriate value.

[2] Engaging portions (34) are provided on both sides of the front end portion of the protective plate (32) inserted into the board connector (20),
On both sides of the terminal arrangement portion (24), a lock portion (25) that engages with the engagement portion (34) to restrict movement of the flexible printed circuit board (30) in the extending direction of the lead wire. The connector connection structure for a flexible printed circuit board according to [1] above, comprising:

DESCRIPTION OF SYMBOLS 10 Circuit board 11 Surface 12 Mark 20 Board connector 22 Opening / closing cover 24 Terminal arrangement part 25 Lock part 30 FPC (flexible printed circuit board)
31 Connection end 32 Protection plate 34 Engagement part 35 Index part 241 Connection terminal

Claims (2)

A terminal arrangement part in which a plurality of connection terminals to be connected to a plurality of lead wires of the flexible printed circuit board are arranged in a plane at a predetermined arrangement pitch, and the terminal in the closed state while covering the terminal arrangement part so as to be openable and closable A connector for a flexible printed circuit board that connects the flexible printed circuit board to a connector for a circuit board that is mounted on a circuit board, and includes an opening and closing cover that presses the flexible printed circuit board placed on the placement unit against the terminal placement unit. A connection structure,
The flexible printed circuit board is a resin provided in a laminated state on a surface opposite to the surface on which the connection end portion is exposed and the terminal arrangement portion is exposed and the connection end portion is provided. A protective plate made of, and an indicator portion equipped at a position away from the connection end by a predetermined distance on both sides in the width direction of the portion leading out of the board connector of the protective plate,
On the surface of the circuit board on which the board connector is mounted, when the insertion length of the connection end part of the flexible printed board to the terminal arrangement part is an appropriate value, the index part and the position in the insertion direction are Equipped with a mark in the first position to align,
The indicator portion is a concave portion recessed inward in the width direction on both side surfaces in the width direction of the flexible printed board, or a convex portion protruding outward in the width direction,
The mark includes a first pattern formed on a surface of the circuit board in a region closer to the board connector than the first position in the insertion direction, and the board connector side from the first position in the insertion direction. And a second pattern formed in a region on the opposite side of the flexible printed circuit board, and a blank linear shape that traverses in the width direction between the respective positions on the outer side in the width direction from both end positions in the width direction of the flexible printed circuit board A connector connection structure for a flexible printed circuit board characterized by a pattern. On both sides of the front end of the protective plate inserted into the board connector, an engagement portion is provided,
The lock part which controls the movement to the extension direction of the said lead wire of the said flexible printed circuit board is provided in the both sides of the said terminal arrangement | positioning part, and it engages with the said engaging part. The connector connection structure of the described flexible printed circuit board.

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