Flexible circuit board connector and manufacturing method

Abstract

The invention discloses a flexible circuit board connector and a manufacturing method, the flexible circuit board connector comprises a single-row wire group and a flexible circuit board, and the single-row wire group is electrically connected to the front surface of the flexible circuit board. The single-row wire group comprises a first wire section arranged on the flexible circuit board side by side and two second wire sections divided from the first wire section, and the two second wire sections are distributed on the two sides of a folding line of the flexible circuit board; and the flexible circuit board is configured to be folded towards the back surface of the flexible circuit board along the folding line, so that the two second lead sections form a double-row lead structure which corresponds to each other up and down. According to the invention, the problems of large size of a single-sided welding flexible circuit board connector and complex double-sided welding flexible circuit board process in the prior art are solved, and the manufacturing process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of connection equipment, and in particular to a flexible circuit board connector and a manufacturing method thereof. Background Art

[0002] The flexible circuit board connector is generally formed by welding wires on the flexible circuit board and then injection molding. The existing flexible circuit board connector is usually welded with a single row of metal wires on the flexible circuit board, and then the single row of metal wires and the flexible circuit board are injection molded to form a complete flexible circuit board connector.

[0003] In the prior art, after a single-row metal wire is welded to a flexible circuit board for injection molding, if the number of the single-row metal wires increases, the injection molding area will undoubtedly increase greatly, thereby increasing the volume of the flexible circuit board connector, which is not conducive to the miniaturization of the flexible circuit board connector; in addition, if the metal wires are welded on both sides of the flexible circuit board, the complexity of the process will undoubtedly increase. At the same time, due to problems such as thermal deformation during the welding process, the yield rate will be further reduced, and the production cost will be increased.

[0004] At present, no effective solution has been proposed for the problems that the existing single-sided soldered flexible circuit boards are large in size and the double-sided soldered flexible circuit boards have complex processes. Summary of the invention

[0005] In view of this, an embodiment of the present invention provides a flexible circuit board connector and a manufacturing method to at least solve the problem that the existing single-sided soldered flexible circuit board is large in size and the double-sided soldering process of the flexible circuit board is complicated.

[0006] The embodiment of the present invention provides the following technical solutions:

[0007] An embodiment of the present invention provides a flexible circuit board connector, comprising a single-row wire group and a flexible circuit board, wherein the single-row wire group is electrically connected to the front surface of the flexible circuit board, and the single-row wire group comprises a first wire segment arranged side by side on the flexible circuit board and two second wire segments branched from the first wire segment, wherein the two second wire segments are distributed on both sides of a fold line of the flexible circuit board;

[0008] The flexible circuit board is configured to be folded along the folding line toward the back side of the flexible circuit board, so that the two second wire segments form a double-row wire structure corresponding to each other up and down.

[0009] Furthermore, the flexible circuit board comprises:

[0010] A plurality of positioning holes are symmetrically distributed on both sides of the folding line of the flexible circuit board for folding and positioning.

[0011] Furthermore, the flexible circuit board is provided with a pre-folding structure along the folding line, and the pre-folding structure is used to suppress a rebound tendency of the flexible circuit board after the flexible circuit board is folded.

[0012] Furthermore, the flexible circuit board connector further comprises:

[0013] A reinforcing plate is attached to the back side of the flexible circuit board and is located at least on one side of the folding line. After the flexible circuit board is folded along the folding line, the reinforcing plate is located in the folding space formed on the back side of the flexible circuit board.

[0014] Furthermore, there are two reinforcing plates, which are respectively located on both sides of the folding line, and after the flexible circuit board is folded along the folding line, the two reinforcing plates are aligned and attached.

[0015] Further, the single-row wire group includes a plurality of wires arranged side by side, the plurality of wires are bent in a “╗” shape, the transverse portions of the plurality of wires are arranged side by side to form the first wire segment, and the transverse portions of the plurality of wires are set to different lengths so that the longitudinal portions of the plurality of wires are divided into two second wire segments; or

[0016] The single-row wire group includes a plurality of wires arranged side by side, the plurality of wires are bent in a "U" shape, the first longitudinal portions of the plurality of wires are arranged side by side to form the first wire segment, and the second longitudinal portions of the plurality of wires are divided into two second wire segments under the action of the middle portion thereof.

[0017] Furthermore, the single-row wire group is welded, fusion welded, ultrasonically welded or crimped onto the flexible circuit board.

[0018] Furthermore, the double-row wire structure and the folded portion of the flexible circuit board are enclosed by a shell, and the shell includes at least one of an injection molded block, a shell formed by upper and lower covers, and an encapsulation structure formed by winding.

[0019] The embodiment of the present invention further provides a method for manufacturing a flexible circuit board connector, comprising:

[0020] Pre-processing the flexible circuit board, the pre-processing comprising symmetrically pasting two reinforcing plates on both sides of the folding line on the back side of the flexible circuit board;

[0021] Soldering a single-row wire group to the front side of the flexible circuit board, the single-row wire group comprising a first wire segment and two second wire segments branched from the first wire segment, the two second wire segments being distributed on both sides of a fold line on the flexible circuit board;

[0022] Folding the flexible printed circuit board toward the back along the folding line so that the two reinforcing plates are attached to each other and the two second wire segments form a double-row wire structure corresponding to each other up and down;

[0023] The double-row wire structure and the flexible circuit board are placed in an injection molding cavity formed between an upper mold and a lower mold, and ends of the two reinforcing plates, ends of the flexible circuit board, and ends of the double-row wire structure extend from a wire outlet between the upper mold and the lower mold, so that the ends of the flexible circuit board, the two reinforcing plates, and the double-row wire structure block the wire outlet of the injection molding cavity;

[0024] Injection molding is performed into the injection molding cavity to form an injection molding block.

[0025] Furthermore, the pre-processing further includes forming symmetrical positioning holes on both sides of the folding line of the flexible circuit board, performing pre-folding processing on the folding line of the flexible circuit board, and forming a symmetrical positioning hole on both sides of the folding line of the flexible circuit board.

[0026] Compared with the prior art, the at least one technical solution adopted in the embodiment of the present invention can achieve the following beneficial effects:

[0027] A flexible circuit board connector of the present invention folds the flexible circuit board in half so that the two second wire segments on the front side of the flexible circuit board form a double-row wire structure corresponding to each other up and down, and finally encapsulates the double-row wire structure and the folded part of the flexible circuit board, thereby solving the problems of large size of the single-sided soldering flexible circuit board connector and complex double-sided soldering process of the flexible circuit board in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0029] Figure 1 A schematic diagram of a flexible circuit board connection structure according to an embodiment of the present invention;

[0030] Figure 2 Schematic diagram of the structure of a single-row cable group according to an embodiment of the present invention (I);

[0031] Figure 3 Schematic diagram of the structure of a single-row cable group according to an embodiment of the present invention (II);

[0032] Figure 4 This is a schematic diagram of the structure of a flexible circuit board pasted with a reinforcing plate according to an embodiment of the present invention;

[0033] Figure 5 A schematic structural diagram of a flexible circuit board provided with a pre-folded structure according to an embodiment of the present invention;

[0034] Figure 6 It is a structural schematic diagram of welding a single-row wire group on a flexible circuit board according to an embodiment of the present invention;

[0035] Figure 7 for Figure 6 Schematic diagram of the structure after the structure is folded in half;

[0036] Figure 8 for Figure 7 Side view of the structure being loaded between the upper and lower dies.

[0037] The accompanying drawings of the present invention are as follows:

[0038] 10. Single-row wire group; 11. First wire segment; 12. Second wire segment; 13. Double-row wire structure; 14. Wire;

[0039] 20. Flexible circuit board; 21. Positioning hole; 22. Pre-folding structure; 23. Reinforcement plate;

[0040] 30. Injection molding block;

[0041] 40. Upper mold;

[0042] 50. Lower mold;

[0043] 60. Cable outlet. DETAILED DESCRIPTION

[0044] The embodiments of the present application are described in detail below with reference to the accompanying drawings.

[0045] The following describes the implementation methods of the present application through specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. The present application can also be implemented or applied through other different specific implementation methods, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that, in the absence of conflict, the following embodiments and the features in the embodiments can be combined with each other. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work belong to the scope of protection of the present application.

[0046] It should be noted that various aspects of the embodiments within the scope of the appended claims are described below. It should be apparent that the aspects described herein can be embodied in a wide variety of forms, and any specific structure and / or function described herein is merely illustrative. Based on the present application, it should be understood by those skilled in the art that an aspect described herein can be implemented independently of any other aspect, and two or more of these aspects can be combined in various ways. For example, any number and aspect described herein can be used to implement the device and / or practice the method. In addition, other structures and / or functionalities other than one or more of the aspects described herein can be used to implement this device and / or practice this method.

[0047] It should also be noted that the illustrations provided in the following embodiments are only schematic illustrations of the basic concept of the present application. The drawings only show components related to the present application rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0048] Additionally, in the following description, specific details are provided to facilitate a thorough understanding of the examples. However, it will be understood by those skilled in the art that the examples can be practiced without these specific details.

[0049] At present, when the FPC flexible circuit board and the round copper wire 14 are welded to form a flexible circuit board connector, only single-row welding can be achieved, resulting in a larger injection molding area; if double-sided welding is performed on the flexible circuit board 20, it will undoubtedly increase the difficulty of welding the wire 14 to the flexible circuit board 20.

[0050] For example, when double-sided welding is performed on the flexible circuit board 20, the process is relatively simple when it is welded to the front side, but when it is welded to the back side, the product may be damaged during the welding process due to the high welding temperature. Therefore, double-sided welding is difficult and the process is relatively complicated.

[0051] Based on this, this specification embodiment proposes a processing solution: Figures 1 to 3 As shown in Figures 6 and 7, a flexible circuit board connector of the present invention electrically connects a single-row wire group 10 to the front side of a flexible circuit board 20, and then separates two second wire segments 12 from a first wire segment 11, and makes the two second wire segments 12 distributed on both sides of a folding line of the flexible circuit board 20, so that after the flexible circuit board 20 is folded along the folding line, the two second wire segments 12 form a double-row wire structure 13 corresponding to each other in the upper and lower parts, so as to reduce its packaging volume, thereby solving the problems of large volume of a single-sided soldered flexible circuit board connector and complex process of double-sided soldering of the flexible circuit board 20 in the prior art.

[0052] The technical solutions provided by various embodiments of the present application are described below in conjunction with the accompanying drawings.

[0053] Example 1

[0054] like Figures 1 to 6 As shown, a flexible circuit board connector according to an embodiment of the present invention includes a single-row wire group 10 and a flexible circuit board 20. The single-row wire group 10 is electrically connected to the front side of the flexible circuit board 20. The single-row wire group 10 includes a first wire segment 11 welded side by side on the flexible circuit board 20 and two second wire segments 12 separated from the first wire segment 11. The two second wire segments 12 are distributed on both sides of the folding line of the flexible circuit board 20. After the flexible circuit board 20 is folded along the folding line toward the back side of the flexible circuit board 20, the two second wire segments 12 form a double-row wire structure 13 corresponding to each other up and down.

[0055] The single row wire assembly 10 is welded, fused, ultrasonically welded or crimped onto the flexible circuit board 20 .

[0056] The single-row wire group 10 includes a plurality of wires 14 arranged side by side, for example, 20 to 100 wires 14 arranged side by side.

[0057] The plurality of wires 14 in the single-row wire group 10 are welded in parallel on one side of the flexible circuit board 20 , that is, the front side.

[0058] The first wire segment 11 is a portion where a plurality of wires 14 are arranged side by side; the second wire segment 12 is a portion where a plurality of wires 14 are bent.

[0059] In some of the embodiments, Figure 2 As shown, the single-row wire group 10 includes a plurality of conductors 14 arranged side by side, the plurality of conductors 14 are bent in an “╗” shape, the transverse portions of the plurality of conductors 14 are arranged side by side to form a first conductor segment 11, and the transverse portions of the plurality of conductors 14 are set to different lengths so that the longitudinal portions of the plurality of conductors 14 are divided into two second conductor segments 12.

[0060] The single-row wire group 10 as a whole forms an F-shaped structure, the two transverse parts of the F-shaped structure are two second wire segments 12 , and the longitudinal part of the F-shaped structure is the first wire segment 11 .

[0061] For example, when the single-row wire group 10 has 20 wires 14, one end of the 20 wires 14 are arranged side by side to form a first wire segment 11, and the other ends of the 20 wires 14 are bent from different lengths to form two second wire segments 12, each second wire segment 12 includes 10 wires 14, and the two second wire segments 12 are symmetrically arranged to facilitate folding with the flexible circuit board 20.

[0062] In some of the embodiments, Figure 3As shown, the single-row wire group 10 includes a plurality of conductors 14 arranged side by side, the plurality of conductors 14 are bent in a "U" shape, the first longitudinal portions of the plurality of conductors 14 are arranged side by side to form a first conductor segment 11, and the second longitudinal portions of the plurality of conductors 14 are divided into two second conductor segments 12 under the action of their middle portions.

[0063] The single-row wire group 10 is an H-shaped structure as a whole, the first wire segment 11 forms a first longitudinal portion of the upper end of the H-shaped structure, and the two second wire segments 12 form two second longitudinal portions of the lower end of the H-shaped structure.

[0064] For example, when the single-row wire group 10 has 20 wires 14, the first longitudinal portion of the 20 wires 14 arranged side by side is the first wire segment 11, the 20 wires 14 are bent in a "U" shape, and the transversely bent portion of each wire 14 is bent from different lengths to form two symmetrical second wire segments 12.

[0065] The spacing between the multiple wires 14 of the single-row wire group 10 can be flexibly set according to the design or electrical requirements of the flexible circuit board 20, for example, it can be set to 1 mm.

[0066] In the present application, the plurality of wires 14 in the first wire segment 11 and the plurality of wires 14 in the second wire segment 12 are arranged side by side.

[0067] In some embodiments, the two second wire segments 12 are symmetrically arranged about the folding line and have the same number. After the two second wire segments 12 are folded along the flexible printed circuit board 20 , the plurality of wires 14 in the two second wire segments 12 are arranged correspondingly up and down.

[0068] In other embodiments, the two second wire segments 12 may be arranged asymmetrically, and a different number of wires 14 may be arranged in each second wire segment 12.

[0069] In the embodiment of the present invention, all the wires 14 in the single-row wire group 10 are welded to the front side of the flexible circuit board 20, and one end of multiple wires 14 in the flexible circuit board 20 is arranged side by side, and the middle is bent to form two second wire segments 12, and the multiple wires 14 in each second wire segment 12 are also arranged side by side. After the two second wire segments 12 are distributed on both sides of the fold line on the flexible circuit board 20, a double-row wire structure 13 is formed. Finally, the double-row wire structure 13 and the flexible circuit board 20 are enclosed in a shell, thereby solving the problems of large area occupied by single-row injection molding and complex double-sided injection molding process in the prior art.

[0070] Furthermore, if Figure 2 As shown, the flexible circuit board 20 includes a plurality of positioning holes 21 symmetrically distributed on both sides of the folding line of the flexible circuit board 20 for folding and positioning.

[0071] The positioning hole 21 is used to indicate whether the flexible circuit board 20 is folded along the folding line, so that the two second wire segments 12 form a double-row wire structure 13 that is symmetrical in both directions after the flexible circuit board 20 is folded.

[0072] Specifically, there are four positioning holes 21 , and two of them are symmetrically arranged on both sides of the folding line of the flexible circuit board 20 .

[0073] Furthermore, if Figure 3 , 5 As shown, the flexible circuit board 20 is formed with a pre-folding structure 22 along the folding line, and the pre-folding structure 22 is used to suppress the rebound tendency of the flexible circuit board 20 after the flexible circuit board 20 is folded.

[0074] The pre-folding structure 22 may be a groove structure, and the groove structure is formed by pressing along the folding line of the flexible circuit board 20 .

[0075] For example, the pre-folded structure 22 may be an extruded wire groove structure.

[0076] The pre-folding structure 22 may also be a wire groove structure, such as a wire groove of sufficient length is provided along the folding line to facilitate the folding of the flexible circuit board 20 .

[0077] The present application forms a pre-folding structure 22 on the flexible circuit board 20 , which can suppress the restoring elastic force of the flexible circuit board 20 after being bent, so as to facilitate injection molding of the flexible circuit board 20 after being folded.

[0078] Furthermore, if Figures 5-6 As shown, Figure 6 Only part of the wires are shown. The flexible circuit board connector also includes a reinforcing plate 23, which is attached to the back of the flexible circuit board 20 and is located at least on one side of the fold line. After the flexible circuit board 20 is folded along the fold line, the reinforcing plate 23 is located in the folding space formed on the back of the flexible circuit board 20.

[0079] The reinforcing plate 23 is used to fill the folded space formed on the back side of the flexible circuit board 20 and increase the distance between the two second wire segments 12 .

[0080] Among them, after the reinforcing plate 23 is placed in the folding space, the flexible circuit board 20 can remain flat after being bent, thereby preventing the wire 14 from detaching from the flexible circuit board 20 due to the tilting and bending of the flexible circuit board 20, and keeping the end of the wire 14 extending from the double-row wire structure 13 horizontal.

[0081] The reinforcing plate 23 can be adhered to the back side of the flexible circuit board 20 by glue (such as thermosetting glue).

[0082] Preferably, there are two reinforcing plates 23 , which are respectively located on both sides of the folding line, and after the flexible circuit board 20 is folded along the folding line, the two reinforcing plates 23 are aligned and attached.

[0083] Specifically, after the flexible circuit board 20 is folded along the folding line, the two reinforcing plates 23 adhere to each other and are automatically located in the folding space formed on the back side of the flexible circuit board 20, so that the two second wire segments 12 on the flexible circuit board 20 remain horizontal, preventing the wires 14 in the two second wire segments 12 from tilting upward or downward.

[0084] Preferably, after the two reinforcing plates 23 are bent and fitted together, the two reinforcing plates 23 are glued and connected to be positioned after being folded in half.

[0085] After the flexible circuit board 20 is folded in half, the reinforcing plate 23 is used for bonding, so that the bent flexible circuit board 20 can be fixed to prevent the flexible circuit board 20 from recovering due to its own elasticity.

[0086] The reinforcing plate 23 is used to reduce the gap after the flexible circuit board 20 is folded in half, so as to avoid a large gap between the back sides of the flexible circuit board 20 and affect the injection molding effect.

[0087] The double-row conductor structure 13 and the folded portion of the flexible circuit board 20 are enclosed by a housing 30 , and the housing includes at least one of an injection molded block, a shell formed by upper and lower covers, and an encapsulation structure formed by winding.

[0088] Preferably, the double-row conductor structure 13 and the flexible circuit board 20 are encapsulated by an injection molding block to form a closed structure.

[0089] Specifically, after the flexible circuit board 20 is folded to form the double-row wire structure 13 , the double-row wire structure 13 and the flexible circuit board 20 are placed in a mold so that the double-row wire structure 13 and the flexible circuit board 20 are encapsulated by the injection molding block.

[0090] The thickness of the reinforcement plate 23 of the present application can be flexibly set according to needs. After the reinforcement plate 23 is set, the flexible circuit board 20 is folded along the folding line, and the distance between the two second wire segments 12 can be adjusted, such as adjusting the distance between the two second wire segments 12 to 1 mm.

[0091] Example 2

[0092] like Figures 3 to 8 As shown, an embodiment of the present invention provides a method for manufacturing a flexible circuit board connector, comprising:

[0093] Step S102 , pre-processing the flexible circuit board 20 , including symmetrically pasting two reinforcing plates 23 on both sides of the folding line on the back side of the flexible circuit board 20 .

[0094] The pre-processing further includes forming symmetrical positioning holes 21 on both sides of the folding line of the flexible circuit board 20 and performing pre-folding processing on the folding line of the flexible circuit board 20 .

[0095] Step S104 , soldering the single-row wire assembly 10 to the front side of the flexible circuit board 20 , wherein the single-row wire assembly 10 comprises a first wire segment 11 and two second wire segments 12 branching from the first wire segment 11 , and the two second wire segments 12 are distributed on both sides of the fold line on the flexible circuit board 20 .

[0096] In some embodiments, the two second wire segments 12 are vertically symmetrically arranged, and the two second wire segments 12 include the same number of wires 14 .

[0097] In other embodiments, the two second wire segments 12 may be asymmetrical structures according to the different numbers of wires 14 contained therein.

[0098] Step S106 , fold the flexible printed circuit board 20 along the folding line toward the back side, so that the two reinforcing plates 23 are attached to each other, and the two second wire segments 12 form a double-row wire structure 13 corresponding to each other.

[0099] The two reinforcing plates 23 are attached and aligned by means of adhesive tape.

[0100] Step S108, placing the double-row conductor structure 13 and the flexible circuit board 20 in the injection molding cavity formed between the upper mold 40 and the lower mold 50, and the ends of the two reinforcing plates 23, the ends of the flexible circuit board 20, and the ends of the double-row conductor structure 13 extend from the wire outlet 60 between the upper mold 40 and the lower mold 50, so that the ends of the flexible circuit board 20, the two reinforcing plates 23, and the ends of the double-row conductor structure 13 block the wire outlet 60 of the injection molding cavity.

[0101] An injection molding cavity is formed between the upper mold 40 and the lower mold 50 , and the size of the injection molding cavity is larger than the folded flexible circuit board 20 , so that when the injection molding material is filled in the injection molding cavity, an injection molding block 30 is formed outside the flexible circuit board 20 and the double-row wire structure 13 .

[0102] A wire outlet 60 is disposed between the upper mold 40 and the lower mold 50 , and a wire hole (semicircular hole) corresponding to the wire 14 is disposed on the wire outlet 60 .

[0103] Specifically, Figures 7-8 As shown, Figure 7Only part of the wires are shown. Before injection molding, the two reinforcing plates 23 and the folded flexible circuit board 20 form a folded structure, which is loaded into the injection molding space, and the wires 14 on the double-row wire structure 13 are correspondingly placed in the wire holes, and the ends of the two reinforcing plates 23 and the folded flexible circuit board 20 are extended from the wire outlet 60 to block the outlet, thereby closing the injection molding space and preventing the injection molding material from flowing out of the wire outlet 60.

[0104] Step S110 , injecting into the injection cavity to form an injection block 30 .

[0105] The present invention welds a single-row wire group 10 to the front side of a flexible circuit board 20, and divides the outlet end of the single-row wire group 10 into two symmetrically distributed second wire segments 12. After the flexible circuit board 20 is folded in half, the two second wire segments 12 form a double-row wire structure 13 distributed up and down, thereby realizing double-row injection molding after welding the flexible circuit board 20 and the wire 14, and realizing efficient welding of 20 to 100 wires 14, reducing the size of the injection molding block 30, and saving installation space.

[0106] In this specification, the same or similar parts between the various embodiments can be referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, for the product embodiment described later, since it corresponds to the method, the description is relatively simple, and the relevant parts can be referred to the partial description of the system embodiment.

[0107] The above is only a specific implementation of the present application, but the protection scope of the present application is not limited thereto. Any changes or substitutions that can be easily thought of by a person skilled in the art within the technical scope disclosed in the present application should be included in the protection scope of the present application. Therefore, the protection scope of the present application shall be based on the protection scope of the claims.

Claims

1. A flexible circuit board connector, comprising a single-row wire group and a flexible circuit board, wherein the single-row wire group is electrically connected to the front surface of the flexible circuit board, characterized in that: The single-row wire group includes a first wire segment arranged side by side on the flexible circuit board and two second wire segments branched from the first wire segment, and the two second wire segments are distributed on both sides of the folding line of the flexible circuit board; The flexible circuit board is configured to be folded along the folding line toward the back side of the flexible circuit board, so that the two second wire segments form a double-row wire structure corresponding to each other up and down.

2. The flexible circuit board connector according to claim 1, characterized in that: The flexible circuit board comprises: A plurality of positioning holes are symmetrically distributed on both sides of the folding line of the flexible circuit board for folding and positioning.

3. The flexible circuit board connector according to claim 1, characterized in that: The flexible circuit board is formed with a pre-folding structure along the folding line, and the pre-folding structure is used to suppress the rebound tendency of the flexible circuit board after the flexible circuit board is folded.

4. The flexible circuit board connector according to claim 1, characterized in that: Also includes: A reinforcing plate is attached to the back side of the flexible circuit board and is located at least on one side of the folding line. After the flexible circuit board is folded along the folding line, the reinforcing plate is located in the folding space formed on the back side of the flexible circuit board.

5. The flexible circuit board connector according to claim 4, characterized in that: There are two reinforcing plates, which are respectively located on both sides of the folding line, and after the flexible circuit board is folded along the folding line, the two reinforcing plates are aligned and attached.

6. The flexible circuit board connector according to claim 1, characterized in that: The single-row wire group includes a plurality of wires arranged side by side, the plurality of wires are bent in a "╗" shape, the transverse portions of the plurality of wires are arranged side by side to form the first wire segment, and the transverse portions of the plurality of wires are set to different lengths so that the longitudinal portions of the plurality of wires are divided into two second wire segments; or The single-row wire group includes a plurality of wires arranged side by side, the plurality of wires are bent in a "U" shape, the first longitudinal portions of the plurality of wires are arranged side by side to form the first wire segment, and the second longitudinal portions of the plurality of wires are divided into two second wire segments under the action of their middle portions.

7. The flexible circuit board connector according to any one of claims 1 to 6, characterized in that: The single row wire group is welded, fused, ultrasonically welded or crimped onto the flexible circuit board.

8. The flexible circuit board connector according to any one of claims 1 to 6, characterized in that: The double-row wire structure and the folded portion of the flexible circuit board are enclosed by a shell, and the shell includes at least one of an injection molded block, a shell formed by upper and lower covers, and an encapsulation structure formed by winding.

9. A method for manufacturing a flexible circuit board connector, characterized in that: include: Pre-processing the flexible circuit board, the pre-processing comprising symmetrically pasting two reinforcing plates on both sides of the folding line on the back side of the flexible circuit board; Soldering a single-row wire group to the front side of the flexible circuit board, the single-row wire group comprising a first wire segment and two second wire segments branched from the first wire segment, the two second wire segments being distributed on both sides of a fold line on the flexible circuit board; Folding the flexible printed circuit board toward the back along the folding line so that the two reinforcing plates are attached to each other and the two second wire segments form a double-row wire structure corresponding to each other up and down; The double-row wire structure and the flexible circuit board are placed in an injection molding cavity formed between an upper mold and a lower mold, and ends of the two reinforcing plates, ends of the flexible circuit board, and ends of the double-row wire structure extend from a wire outlet between the upper mold and the lower mold, so that the ends of the flexible circuit board, the two reinforcing plates, and the double-row wire structure block the wire outlet of the injection molding cavity; Injection molding is performed into the injection molding cavity to form an injection molding block.

10. The manufacturing method according to claim 9, characterized in that: The pre-processing further includes forming symmetrical positioning holes on both sides of the folding line of the flexible circuit board and performing pre-folding processing on the folding line of the flexible circuit board.

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