JP3178575B2 - Flexible circuit board harness device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a FPC (flexible circuit board) harness apparatus for interconnecting electronic devices, electric devices, printed circuit boards, and the like using a flexible printed circuit (FPC).

[0002]

2. Description of the Related Art Conventionally, electronic and electric devices are often
Devices on the same printed circuit board are electrically interconnected through circuits formed on the printed circuit board, and devices on other printed circuit boards are connected by electrical connectors between the printed circuit boards. Electrically interconnected.

[0003] For example, in an example of a connector assembly of a card connector, a printed circuit board having a circuit formed on both front and back sides, that is, a so-called double-sided circuit board is sandwiched between a pair of connectors, and the contacts of each connector and the printed circuit board are connected. The pads on the board are connected by soldering or the like. Further, on the double-sided circuit board, a communication connector for connection to an external circuit is arranged so as to be fitted with a mating connector and connected to another circuit board or another device.

[0004]

However, in this type of connector assembly which is connected to a double-sided circuit board by soldering, it is necessary to perform a soldering operation for each side, which is troublesome.

Further, since the above-mentioned communication connector is fixedly attached to the double-sided circuit board, there is no flexibility in the connection position with the mating device or the mating printed circuit board, and the position is slightly shifted or the circuit arrangement is changed. I couldn't respond.

Furthermore, the use of a large number of connectors complicates the assembly process, especially when the wiring from the card connector assembly described above to external devices or circuit boards is relatively simple , and Economically disadvantageous, simpler wiring was desired.

[0007]

Means for Solving the Problems According to claim 1 of the present invention,
Such a flexible circuit board harness device is provided only on one side.
A flexible circuit board having a pad;
Solder connection for surface mounting solder connection to the pad of the circuit board
From two connector elements with contacts with
The pad and the connector.
After the solder connection of the solder connection part of the tact, the two cores
The solder connection portions of the contacts of the nectar element face each other.
The flexible circuit board is folded back to form a two-layer structure
It is characterized by making.

[0008] A flex according to claim 2 of the present invention.
Shiburu circuit board harness devices have pads only on one side.
And a flexible circuit board in front of the flexible circuit board.
Solder connection part for surface mounting solder connection to the pad
Connector consisting of two connector elements with contacts
And the flexible circuit board on one side.
A connector connected to the pad, the pad and the connector
After the solder connection of the solder connection part of the contact, the two
The solder connection portions of the contacts of the connector element face each other
The flexible circuit board is folded back so that
It is characterized by making.

The present invention relates to an FP for interconnecting devices, printed circuit boards, etc., via an FPC (flexible circuit board).
Obtain C harness device. The FPC has pads and the like for soldering connection of a connector on one surface side. Connector is FPC
And the contacts are soldered to pads and the like.

In the FPC harness device of the present invention, the FPC
The PC is folded, and a wiring structure of at least two layers is realized. The two layers of wiring have flexibility in close proximity and independently.
At least one pair of connectors attached to the FPC can be assembled integrally, and soldering portions of the contacts to the FPC are arranged substantially back to back.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the FPC harness device of the present invention will be described below in detail with reference to the drawings.

FIG. 1 is a plan view of an FPC harness device according to the present invention. As shown, the FPC harness device 10 includes a card connector assembly 20, a first connector 30, and a second connector.
And a FPC (flexible circuit) 100 for connecting and connecting them by wiring.

FIGS. 3A and 3B show a part of the card connector assembly in a side view and a sectional view. As shown in FIGS. 3A and 3B, the card connector assembly 20 has a two-tiered structure of connectors (connector elements) 21a and 21b. This structure is disclosed in Japanese Utility Model Application No. 4-92 filed by the present applicant.
No. 948. This two-stage structure is PC
MCIA ( personal computer memory card
International Association ) T according to the standard
ype I, II, and III cards can be selectively accepted.

FIG. 2 is a plan view showing an FPC 100 used in the card connector assembly 20. As shown in FIG. The FPC 100 includes the connector 21 and the first connector 30 of the card connector assembly 20.
And pads 111 and 112 to be soldered and connected to each of them, and pads 113 with openings for attaching and connecting the second connector 40. The pads 111 are formed at positions apart from each other in FIG. 2 as 111a and 111b to be connected to the upper and lower connectors 21a and 21b of the card connector assembly 20, respectively. Port connection part 50
Has conductor surfaces 51 arranged at an appropriate width (pitch) to be received by a mating connector (not shown). Further, as a reinforcing member for the connector portion or as a spacer for filling an extra space, a resin plate 10 is provided at an appropriate position on the FPC 100.
5 can be glued. In addition, FPC100
Tape 106 may be placed to smooth the bend. The positions of the resin plate 105 and the tape 106 are indicated by broken lines in FIGS. At appropriate positions of the FPC 100, mounting holes 120, 121, 122, 123 for mounting to the base are formed.

The assembly of the connector circuit assembly will be described. In the first step, the connector 21a for the card is placed on the FPC.
, 21b, the first connector 30, and the second connector 40 are connected by soldering. In particular, the second connector 40 has a large number of arranged pins (not shown), and each pin penetrates through the opening of the pad 113 with an opening of the FPC 100 toward the front side from the back side of the plane of FIG. Soldered on the near side. That is, all of the card connectors 21a and 21b, the first connector, and the second connector are connected by soldering on the same surface side.

In the second step, the FPC is bent. 1 and 2 show the bending position by line AA. As a result, the mounting holes 120, 121, and 123 are substantially overlapped to form a through hole. The mounting hole 122 in FIG. 2 is used for assembling and mounting the card connector assembly.

In the third step, the card connector assembly 20
Is assembled. In the connectors 21a and 21b, the connector assembly 20 is assembled in the second step. In the second step, the connectors 21a and 21b are connected to the FPC as shown in FIGS.
It is placed in a position to hold 100. At this position, it is assembled together with the frame 25 and the like contacted by screws and metal fittings.
That is, the FPC 100 is sandwiched between the connectors 21a and 21b together with the resin plate 105 , and is soldered to the contacts 22a, 22a ', 22b and 22b'. As shown in FIG. 1, when the assembly is completed, the card connector assembly 20 is wired to another connector and port connection portion by the FPC 100 to enable electrical connection with an external device. As shown in FIGS. 1 and 3A and 3B, the FPC 10
Numeral 0 is composed of a front circuit board 100a and a rear circuit board 100b which are substantially close to each other and each has flexibility independently. For example, a mating connector to be fitted with the second connector can select a fitting direction within a certain range.

Although the preferred embodiment of the circuit assembly of the present invention has been described above, the preferred embodiment does not limit the present invention, and various modifications and changes can be made by those skilled in the art.

[0019]

According to the FPC harness device of the present invention, the work of soldering to a double-sided board, which has conventionally been troublesome, is unnecessary for manufacturing a connection device with an external device, and the soldering process is performed on one side of the FPC. Since it is carried out only by the above, the manufacturing process is simplified.
In the soldering process, the input / output connectors of the electric device and the external device are collectively connected to the FPC, and the FPC performs wiring between them, so that the labor of assembling the connection device can be greatly reduced.

Further, in the FPC harness device of the present invention, the multi-layered FPCs extending from the integral connector assembly and having connectors for connection with the outside are arranged almost independently of each other with flexibility. Therefore, there is flexibility in the connection position and the fitting direction of the connector, and it is possible to realize wiring that effectively utilizes space.

[Brief description of the drawings]

FIG. 1 is a plan view of a circuit connector assembly according to a preferred embodiment of the present invention. The wiring in the FPC is omitted.

FIG. 2 is an FPC used in the circuit connector assembly of FIG. 1;
FIG.

3A is a side view and FIG. 3B is a cross-sectional view showing an assembly position of a card connector and an FPC.

[Explanation of symbols]

20 Connector assembly (Card connector assembly) 21a, 21b Connector element 22a, 22a ', 22b, 22b' Contact 30, 40 Connector 100 Flexible circuit (FPC)

Claims (2)

(57) [Claims] 1. A flexiv having a pad only on one side.
A circuit board and a surface on the pad of the flexible circuit board.
Has contacts with solder connections for mounting solder connections
A connector assembly comprising two connector elements
The solder of the solder connection part of the pad and the contact
After connection, the contacts of the two connector elements
The flexible circuit so that the solder connection portions face each other.
A flexible circuit board harness device, wherein the board is folded to form a two-layer structure . 2. A flexiv having a pad only on one side.
A circuit board and a surface on the pad of the flexible circuit board.
Has contacts with solder connections for mounting solder connections
A connector assembly consisting of two connector elements
The connector connected to the flexible circuit board on one side by soldering
And a solder of the solder connection part of the pad and the contact.
After connection, the contacts of the two connector elements
The flexible circuit so that the solder connection portions face each other.
A flexible circuit board harness device, wherein the board is folded to form a two-layer structure .