CN204885639U - Fixing structure of flexible flat cable electric connector - Google Patents

Abstract

The utility model discloses a flexible flat cable electrical connector fixing structure, which includes an electrical connector and a flexible flat cable. The electrical connector includes an insulator, a circuit board, a plurality of terminals and a cover. The insulator forms the insertion space. The circuit board has several conductive parts and several conductive through holes. The plurality of terminals extend into the insertion space and pass through the plurality of conductive through holes, so that the plurality of terminals are electrically connected to corresponding conductive parts of the circuit board. The welding parts of the flexible flat cable are connected to the conductive parts of the circuit board. The cover body includes a guide plate, and the cover body is assembled with the insulator, so that the circuit board is received between the cover body and the insulator. When the cover is assembled to the insulator, the guide plate protrudes from the plane of the circuit board, and the flexible flat cable is bent and wrapped around one end of the guide plate and extends outward.

Description

Flexible flat cable electrical connector fixing structure

technical field

The utility model relates to a fixing structure of a flexible flat cable electrical connector, in particular to a fixing structure of a flexible flat cable electrical connector used in SATA specifications.

Background technique

Flexible flat cable (FFC/Flexible Flat Cable) is widely used in related electronic products due to its characteristics of bending electric wires, and the end of flexible flat cable is usually equipped with an electrical connector to facilitate its electrical insertion. To achieve the purpose of electrical bending and conducting. A conventional electrical connector for connecting a flexible flat cable to an edge interface of a board has a housing, a circuit board and bifurcated contact assemblies arranged in the housing, each contact assembly having a first contact assembly with an exposed contact interface portion A contact portion and a second contact portion. Several conductive parts are arranged on the circuit board, which are respectively used for connecting the contact component and the flexible flat cable. Although the aforementioned flexible flat cable electrical connector can achieve its formation, connection and use, it still has its shortcomings. For example, the flexible flat cable is connected to the conductive circuit of the circuit board of the electrical connector by welding, but the welding area between the flexible flat cable and the circuit board is small, and the flexible flat cable is not supported by other components. . When the flexible flat cable is under tension, the welded portion of the flexible flat cable is easily damaged or even detached, resulting in electrical connection and transmission failures, which is not an ideal design.

In addition, in the prior art, there must be different fixing structures for the electrical connectors of the flexible flat cable at the edge of the board for different assembly methods of the board. In order to match different flexible flat cable electrical connector fixing structures, different molds must be designed to produce the corresponding flexible flat cable electrical connector fixing structures, which will result in considerable cost expenditure. Therefore, there is still a need to improve the structure of the existing board edge flexible flat cable electrical connector fixing structure.

Utility model content

Therefore, the purpose of this utility model is to provide a fixed structure for a flexible flat cable electrical connector. The flexible flat cable is bent and wrapped around one end of the guide plate of the cover of the electrical connector, which can strengthen the flexible flat cable and the electrical connector. connection strength. At the same time, the fixing structure of the flexible flat cable electric connector of the present invention separates the insulator and the cover. For different card assembly methods, only the design of the cover needs to be modified, and no additional modification of the insulator is required.

According to an embodiment of the present invention, it provides a flexible flat cable electrical connector fixing structure, which includes an electrical connector and a flexible flat cable. The electrical connector includes an insulator, a circuit board, several terminals and a cover. The insulator has several receiving grooves and several terminal holes, the insulator forms an inserting space, and the several terminal holes are located on one side of the inserting space. The circuit board has several conductive parts and several conductive through holes, the several conductive parts are electrically connected to the corresponding conductive through holes, and the several conductive through holes penetrate the circuit board. The plurality of terminals are embedded in the plurality of receiving grooves of the insulator, and the two ends of the plurality of terminals extend into the insertion space through the corresponding terminal holes and pass through the corresponding conductive through holes, so that the plurality of terminals are electrically connected. Sexually connected to the corresponding conductive part of the circuit board. The cover body includes a guide plate, and the cover body is combined with the insulator so that the circuit board is accommodated between the cover body and the insulator body. The flexible flat cable has several soldering parts, and the several soldering parts are connected to the several conductive parts of the circuit board. When the cover body is assembled with the insulator, the guide plate protrudes from the plane of the circuit board, and the flexible flat cable is bent and wrapped around one end of the guide plate and extends outward.

According to an embodiment of the present invention, the cover body includes several fastening parts, the insulator includes several fixing parts, each fixing part corresponds to one of the fastening parts, and when the several fastening parts of the cover body are fastened When the plurality of fixing parts of the insulator are used, the circuit board and part of the flexible flat cable are fixed between the cover and the insulator.

According to an embodiment of the present invention, the cover body has a guide groove, and the width of the guide groove is greater than or equal to the width of the flexible flat cable, so that the flexible flat cable extends outward along the guide groove.

According to an embodiment of the present invention, the cover body has a slit through the guide plate, the flexible flat cable is bent and wound around one end of the guide plate and passes through the guide plate, and then to the extend outside.

According to an embodiment of the present invention, the flexible flat cable extends outwards towards the normal direction of the plane of the circuit board.

According to an embodiment of the present invention, the front end of the flexible flat cable has a bending angle, and the plurality of welding portions extend according to the bending angle and contact the plurality of conductive portions.

According to an embodiment of the present invention, the plurality of terminals include a first contact end and a second contact end, the first contact end extends into the insertion space through the corresponding terminal hole, and the second contact end contacts the corresponding The conductive through holes make the terminals electrically connected to corresponding conductive parts of the circuit board.

According to an embodiment of the present invention, the circuit board includes a first surface and a second surface, the first surface is opposite to the second surface, and the second surface faces the insulator, and the plurality of conductive parts are located on the circuit board the first side of

According to an embodiment of the present invention, the flexible flat cable is a flexible flat cable, a flexible printed circuit board or a metal cable.

According to an embodiment of the present invention, it provides a flexible flat cable electrical connector fixing structure, which includes an electrical connector and a flexible flat cable. The electrical connector includes an insulator, a circuit board, several terminals and a cover. The insulator has several receiving grooves and several terminal holes, the insulator forms an inserting space, and the several terminal holes are located on one side of the inserting space. The circuit board has several conductive parts and several conductive through holes, the several conductive parts are electrically connected to the corresponding conductive through holes, and the several conductive through holes penetrate the circuit board. The plurality of terminals are embedded in the plurality of receiving grooves of the insulator, and the two ends of the plurality of terminals extend into the insertion space through the corresponding terminal holes and pass through the corresponding conductive through holes, so that the plurality of terminals are electrically connected. Sexually connected to the corresponding conductive part of the circuit board. The cover is combined with the insulator so that the circuit board is accommodated between the cover and the insulator, and the cover has a slit. The flexible flat cable has several soldering parts, and the several soldering parts are connected to the several conductive parts of the circuit board. When the cover body is combined with the insulator, the flexible flat cable is bent and wrapped around one end of the circuit board and extends outward through the slot.

According to an embodiment of the present invention, the cover body includes several fastening parts, the insulator includes several fixing parts, each fixing part corresponds to one of the fastening parts, and when the several fastening parts of the cover body are fastened When the plurality of fixing parts of the insulator are used, the circuit board and part of the flexible flat cable are fixed between the cover and the insulator.

According to an embodiment of the present invention, the opening direction of the slit is parallel to the normal direction of the plane of the circuit board, and the flexible flat cable extends outward toward the normal direction of the plane of the circuit board.

Compared with the prior art, the utility model bends and wraps the flexible flat cable around one end of the guide plate of the cover of the electrical connector, which can achieve the beneficial effect of enhancing the connection strength between the flexible flat cable and the electrical connector. In addition, the flexible flat cable electrical connector fixing structure of the utility model separates the insulator and the cover of the electrical connector, and the assembly method of the electrical connector of different boards only needs to modify the design of the cover without additional modification of the insulator. . Therefore, there is no need to design an insulator mold, and the beneficial effect of reducing the cost of producing the flexible flat cable electrical connector can also be achieved.

Description of drawings

Fig. 1-Fig. 3 depict the fixed structure of the utility model flexible flat cable electrical connector from different angles of view

exploded diagram.

FIG. 4 shows the assembled insulator, circuit board, terminals and flexible flat cable viewed from the perspective of FIG. 1 .

FIG. 5 shows the assembled flexible flat cable electrical connector fixing structure of the first embodiment viewed from the perspective of FIG. 1 .

FIG. 6 shows the assembled flexible flat cable electrical connector fixing structure of the first embodiment viewed from the perspective of FIG. 2 .

FIG. 7A is a top view of FIG. 5 .

Fig. 7B is a cross-sectional view along line A-A' of Fig. 7A.

FIG. 8 shows the assembled flexible flat cable electrical connector fixing structure of the second embodiment viewed from the perspective of FIG. 1 .

FIG. 9A is a top view of FIG. 8 .

Fig. 9B is a cross-sectional view along line B-B' of Fig. 9A.

FIG. 10A is a top view of the fixing structure of the flexible flat cable electrical connector according to the third embodiment of the present invention.

Fig. 10B is a cross-sectional view along line C-C' of Fig. 10A.

FIG. 11A is a top view of the fixing structure of the electrical connector of the flexible flat cable according to the fourth embodiment of the present invention.

Fig. 11B is a cross-sectional view along line D-D' of Fig. 11A.

Detailed ways

In order to further understand the features, technical means, and achieved specific functions and objectives of the utility model, more specific embodiments are listed, followed by drawings and drawing numbers for detailed description as follows.

The following descriptions of the various embodiments refer to the accompanying drawings to illustrate specific embodiments in which the present invention can be implemented. The direction terms mentioned in this utility model, such as "up", "down", "front", "back", "left", "right", "top", "bottom", "horizontal", "vertical" etc. are merely for reference to the directions of the attached drawings. Therefore, the used directional terms are used to illustrate and understand the present invention, but not to limit the present invention.

Please refer to FIG. 1-FIG. 3. FIG. 1-FIG. 3 illustrate exploded views of the fixing structure 1 of the flexible flat cable electrical connector of the present invention from different angles of view. In a preferred embodiment, the flexible flat cable electrical connector fixing structure 1 includes an electrical connector 5 and a flexible flat cable 50 . The electrical connector 5 includes an insulator 10 , a circuit board 20 , a plurality of terminals 30 and a cover 60 .

The insulator 10 has several terminal holes 11 and several receiving grooves 13 . The front end 101 of the insulator 10 forms an insertion space 15 . Another plug can be inserted into the insertion space 15 . The insulator 10 includes several fixing portions 16 .

The circuit board 20 has several conductive portions 21 and several conductive through holes 22 . The plurality of conductive portions 21 are located on the first surface 201 of the circuit board 20 , and the first surface 201 and the second surface 202 are respectively located on opposite sides of the circuit board 20 . A plurality of conductive through holes 22 penetrate the circuit board 20 and are coated with conductive material (such as copper foil). The plurality of conductive portions 21 are electrically connected to the corresponding conductive vias 22 through wires (not shown).

Terminal 30 is made of conductive material such as metal. The plurality of terminals 30 can be inserted from the rear end 102 of the insulator 10 to be embedded in the corresponding receiving groove 13 of the insulator 10 . The terminals 30 include a first contact end 301 and a second contact end 302 . The first contact ends 301 of the terminals 30 extend into the insertion space 15 through the corresponding terminal holes 11 , and the second contact ends 302 of the terminals 30 contact the corresponding conductive through holes 22 . Since the conductive through holes 22 are coated with conductive material and the plurality of conductive parts 21 are electrically connected to the corresponding conductive through holes 22 through wires, after the second contact end 302 touches the conductive through holes 22, the plurality of terminals 30 will be electrically connected to the conductive through holes 22. The corresponding conductive portion 21 of the circuit board 20 . When a socket is inserted into the insertion space 15 of the flexible flat cable electrical connector fixing structure 1, the socket can contact the protruding first contact end 301 so that the socket and the flexible flat cable 50 are electrically connected through the flexible flat cable The fixed structure 1 is used to transmit electrical signals.

The flexible flat cable 50 can be a flexible flat cable, a flexible printed circuit board or a metal cable, and has an insulating layer 52 and a soldering portion 53 . The insulating layer 52 is used to cover several electric wires (not shown), and the ends of the several electric wires are the welding parts 53 . The plurality of soldering portions 53 can be connected to the plurality of conductive portions 21 of the circuit board 20 by adhesive bonding or welding.

The cover body 60 includes a plurality of fastening components 61 , guide plates 62 , guide grooves 63 , slots 64 and a bottom plate 65 . The bottom plate 65 and the guide plate 62 are respectively disposed on the bottom surface and the top surface of the cover body 60 opposite to each other. A plurality of fastening components 61 are disposed on the bottom plate. Each fixing portion 16 of the insulator 10 corresponds to one of the fastening components 61 . In this embodiment, the fastening component 61 is an opening, and the fixing portion 16 is a protrusion. In another embodiment, the fastening member 61 is a protrusion, and the fixing portion 16 is an opening. The width D1 of the guide groove 63 is greater than or equal to the width D2 of the insulating layer 52 of the flexible flat cable 50 . The through slit 64 runs through the guide plate 62 .

Please refer to FIGS. 4-6 , 7A and 7B. FIG. 4 shows the assembled insulator 10 , circuit board 20 , terminals 30 and flexible flat cable 50 from the perspective of FIG. 1 . FIG. 5 shows the assembled flexible flat cable electrical connector fixing structure 1 of the first embodiment viewed from the perspective of FIG. 1 . FIG. 6 shows the assembled flexible flat cable electrical connector fixing structure 1 of the first embodiment viewed from the perspective of FIG. 2 . FIG. 7A is a top view of FIG. 5 , and FIG. 7B is a cross-sectional view of FIG. 7A along line A-A'. When assembling the insulator 10 and the cover 60 , the fastening part 61 of the cover 60 can be fastened to the corresponding fixing portion 16 of the insulator 10 . When the engaging parts 61 of the cover 60 are fastened to the fixing portions 16 of the insulator 10 , the circuit board 20 and part of the flexible flat cables 50 are accommodated and fixed between the cover 60 and the insulator 10 . When the cover body 60 is assembled with the insulator 10 , the guide plate 62 partially protrudes from the plane of the circuit board 20 . The flexible flat cable 50 is close to and bent around the guide plate 62 , so that the flexible flat cable 50 bypasses the guide plate 62 and protrudes from one end of the plane of the circuit board 20 .

Next, the flexible flat cable 50 bypasses the guide plate 62 and passes through the gap 67 between the cover 60 and the insulator 10 , and then the flexible flat cable 50 is placed in the guide groove 63 and extends outward. The flexible flat cable 50 extends outward toward the normal direction of the first surface 201 of the circuit board 20 (the direction indicated by the arrow E). At this time, one end of the flexible flat cable 50 has a bending angle C, and the plurality of welding portions 53 extend according to the bending angle C and contact the plurality of conductive portions 21 . Preferably, the bending angle C is 90 degrees. The bending angle C of 90 degrees allows the several welding portions 53 to be easily connected to the several conductive portions 21 of the circuit board 20 .

In this embodiment, when the flexible flat cable 50 is bent and wound around the guide plate 62 so that the flexible flat cable 50 bypasses the guide plate 62 and protrudes from one end of the plane of the circuit board 20, the bent flexible flat cable The cable 50 increases the connection strength of the flexible flat cable 50 . In this way, the external force pulling the flexible flat cable 50 will be counteracted, so the flexible flat cable 50 is less likely to be detached.

Please refer to FIG. 8 and FIGS. 9A-9B . FIG. 8 shows the assembled flexible flat cable electrical connector fixing structure 1 of the second embodiment viewed from the perspective of FIG. 1 . FIG. 9A is a top view of FIG. 8 . Fig. 9B is a cross-sectional view along line B-B' of Fig. 9A. Compared with the first embodiment shown in FIG. 7, the cover body 60 of this embodiment further includes a through slit 64, and the opening direction of the through slit 64 is perpendicular to the normal direction of the first surface 201 of the circuit board 20 ( That is, the direction indicated by arrow E). The flexible flat cable 50 passes through the slot 64 after going along the guide groove 63 and extends outward. The flexible flat cable 50 extends outward toward the normal direction of the first surface 201 of the circuit board 20 (the direction indicated by the arrow E). Since the flexible flat cable 50 not only bypasses the guide plate 62 protruding from one end of the plane of the circuit board 20, but also passes through the slit 64, there are more turning points than the flexible flat cable 50 in the first embodiment, so it is stronger. The connection strength of the flexible flat cable 50.

Please refer to FIGS. 10A and 10B . FIG. 10A is a top view of a flexible flat cable electrical connector fixing structure 1 according to a third embodiment of the present invention. Fig. 10B is a cross-sectional view along line C-C' of Fig. 10A. The conductive portions 21 of the circuit board 20 are located on the second surface 202 of the circuit board 20 , and the first surface 201 and the second surface 202 are respectively located on opposite sides of the circuit board 20 . A plurality of conductive through holes 22 penetrate the circuit board 20 and are coated with conductive material (such as copper foil). The plurality of conductive portions 21 are electrically connected to the corresponding conductive vias 22 through wires (not shown). The first contact ends 301 of the terminals 30 extend into the insertion space 15 through the corresponding terminal holes 11 , and the second contact ends 302 of the terminals 30 contact the corresponding conductive through holes 22 . Since the conductive through holes 22 are coated with conductive material and the plurality of conductive parts 21 are electrically connected to the corresponding conductive through holes 22 through wires, after the second contact end 302 touches the conductive through holes 22, the plurality of terminals 30 will be electrically connected to the conductive through holes 22. The corresponding conductive portion 21 of the circuit board 20 . When a socket is inserted into the insertion space 15 of the flexible flat cable electrical connector fixing structure 1, the socket can contact the protruding first contact end 301 so that the socket and the flexible flat cable 50 are electrically connected through the flexible flat cable The fixed structure 1 is used to transmit electrical signals.

When the cover 60 is assembled with the insulator 10 , the guide plate 621 of the cover 60 in this embodiment does not protrude from the plane of the circuit board 20 . The flexible flat cable 50 is tightly attached to the circuit board 20 and then passed through the gap 67 between the cover 60 and the insulator 10 . After passing through the slot 64 , the flexible flat cable 50 extends outward toward the normal direction of the first surface 201 of the circuit board 20 (the direction indicated by the arrow E). Since the flexible flat cable 50 not only bypasses the guide plate 621, but also passes through the slit 64, there are more turns than the flexible flat cable 50 in the first embodiment, so the connection of the flexible flat cable 50 is strengthened. strength.

Please refer to FIGS. 11A and 11B . FIG. 11A is a top view of a flexible flat cable electrical connector fixing structure 1 according to a fourth embodiment of the present invention. Fig. 11B is a cross-sectional view along line D-D' of Fig. 11A. The conductive portions 21 of the circuit board 20 are located on the second surface 202 of the circuit board 20 , and the first surface 201 and the second surface 202 are respectively located on opposite sides of the circuit board 20 . A plurality of conductive through holes 22 penetrate the circuit board 20 and are coated with conductive material (such as copper foil). The plurality of conductive portions 21 are electrically connected to the corresponding conductive vias 22 through wires (not shown). The first contact ends 301 of the terminals 30 extend into the insertion space 15 through the corresponding terminal holes 11 , and the second contact ends 302 of the terminals 30 contact the corresponding conductive through holes 22 . Since the conductive through holes 22 are coated with conductive material and the plurality of conductive parts 21 are electrically connected to the corresponding conductive through holes 22 through wires, after the second contact end 302 touches the conductive through holes 22, the plurality of terminals 30 will be electrically connected to the conductive through holes 22. The corresponding conductive portion 21 of the circuit board 20 . When a socket is inserted into the insertion space 15 of the flexible flat cable electrical connector fixing structure 1, the socket can contact the protruding first contact end 301 so that the socket and the flexible flat cable 50 are electrically connected through the flexible flat cable The fixed structure 1 is used to transmit electrical signals.

In this embodiment, the cover body 60 includes a through slit 641 . The opening direction of the through slit 641 is parallel to the normal direction of the first surface 201 of the circuit board 20 (ie, the direction indicated by the arrow E). After the flexible flat cable 50 is wound from the second surface 202 of the circuit board 20 to the first surface 201, then passes through the slit 641 of the cover 60, and extends outward toward the normal direction of the first surface 201 of the circuit board 20 ( in the direction indicated by arrow E).

In addition, the flexible flat cable electrical connector fixing structure 1 of the present utility model separates the insulator 10 and the cover 60 of the electrical connector 5, and only needs to modify the design of the cover 60 for different boards. Additional modifications to the insulator 10 are required. Therefore, there is no need to design a mold for the insulator 10, and the beneficial effect of reducing the cost of producing the fixed structure of the flexible flat cable electrical connector can also be achieved.

In summary, although the present utility model has been disclosed above with a preferred embodiment, the preferred embodiment is not intended to limit the present utility model, and those skilled in the art to which the utility model belongs will not depart from the spirit of the utility model Various changes and modifications can be made within the scope and range, so the scope of protection of the present utility model is subject to the scope defined by the claims.

Claims (10)

1. a flexible flat cable fixing structure for electrical connector, is characterized in that, it comprises:

One electric connector, it comprises:

One insulator, has several accepting groove and several terminals hole, and this insulator forms one and plugs space, and this several terminals hole is positioned at the side that this plugs space;

One circuit board, has several conductive part and several conductive through hole, and this several conductive part is electrically connected corresponding conductive through hole, and this several conductive through hole runs through this circuit board;

Several terminals, is embedded at several accepting grooves of this insulator, and the two ends of this several terminals are each passed through corresponding terminal hole and stretch into this conductive through hole plugging space and pass correspondence, make this several terminals be electrically connected at the corresponding conductive part of this circuit board; And

One lid, is connected to this insulator, makes this circuit board be contained between this lid and this insulator; And

One flexible flat cable, has several weld part, and this several weld part is connected to this several conductive part of this circuit board;

Wherein when this lid is connected to this insulator, the bending of this flexible flat cable is wound around one end of this circuit board and stretches out from through the gap this lid and this insulator.

2. flexible flat cable fixing structure for electrical connector as claimed in claim 1, it is characterized in that, this lid comprises several buckling piece, this insulator comprises several fixed part, each fixed part one of them buckling piece corresponding, when this several buckling piece button of this lid is fixed in this several fixed part of this insulator, this circuit board and this flexible flat cable of part are fixed between this lid and this insulator.

3. flexible flat cable fixing structure for electrical connector as claimed in claim 1, it is characterized in that, this lid has a guide groove, and the width of this guide groove equals the width of this flexible flat cable, and this flexible flat cable is stretched out along this guide groove.

4. flexible flat cable fixing structure for electrical connector as claimed in claim 1, it is characterized in that, this lid comprises a guide plate, when this lid is connected to this insulator, this guide plate protrudes from the plane of this circuit board, and the bending of this flexible flat cable is wound around one end of this guide plate and stretches out.

5. flexible flat cable fixing structure for electrical connector as claimed in claim 4, it is characterized in that, this lid has wears seam, this wears seam this guide plate through, and this wears the normal direction of opening direction perpendicular to the plane of this circuit board of seam, the bending of this flexible flat cable is wound around one end of this guide plate also through after this guide plate, then stretches out.

6. flexible flat cable fixing structure for electrical connector as claimed in claim 1, it is characterized in that, this flexible flat cable stretches out towards the normal direction of the plane of this circuit board.

7. flexible flat cable fixing structure for electrical connector as claimed in claim 1, it is characterized in that, the front end of this flexible flat cable has a bending angle, and this several weld part extends according to this bending angle and is contacted with this several conductive part.

8. a flexible flat cable fixing structure for electrical connector, is characterized in that, it comprises:

One electric connector, it comprises:

One insulator, has several accepting groove and several terminals hole, and this insulator forms one and plugs space, and this several terminals hole is positioned at the side that this plugs space;

One circuit board, has several conductive part and several conductive through hole, and this several conductive part is electrically connected corresponding conductive through hole, and this several conductive through hole runs through this circuit board;

Several terminals, is embedded at several accepting grooves of this insulator, and the two ends of this several terminals are each passed through corresponding terminal hole and stretch into this conductive through hole plugging space and pass correspondence, make this several terminals be electrically connected at the corresponding conductive part of this circuit board; And

One lid, is connected to this insulator, and make this circuit board be contained between this lid and this insulator, this lid has wears seam; And

One flexible flat cable, has several weld part, and this several weld part is connected to this several conductive part of this circuit board;

Wherein when this lid is connected to this insulator, the bending of this flexible flat cable is wound around one end of this circuit board and wears seam through this and stretch out.

9. flexible flat cable fixing structure for electrical connector as claimed in claim 8, it is characterized in that, this lid comprises several buckling piece, this insulator comprises several fixed part, each fixed part one of them buckling piece corresponding, when this several buckling piece button of this lid is fixed in this several fixed part of this insulator, this circuit board and this flexible flat cable of part are fixed between this lid and this insulator.

10. flexible flat cable fixing structure for electrical connector as claimed in claim 8, it is characterized in that, this opening direction wearing seam is parallel to the normal direction of the plane of this circuit board, and this flexible flat cable stretches out towards the normal direction of the plane of this circuit board.