Flexible printed circuit (FPC) capable of being folded and compressed

Abstract

An FPC capable of being folded and compressed comprises a folding part, two fixing parts and two connecting terminals, the two fixing parts are arranged on the two sides of the folding part, and the two connecting terminals are arranged at the ends of the outer sides of the two fixing parts; the folding part comprises two folding plates and a plurality of rotating shaft hinges, the two folding plates are horizontally arranged left and right and located between the two fixing parts, the rotating shaft hinges are connected with the two folding plates, the folding plates and the ends of the fixing parts respectively, and the rotating shaft hinges can movably rotate. According to the utility model, the FPC is designed into a combined structure of the folding part and the fixed part, and the folding part is provided with the plurality of rotating shaft hinges, so that the folding part can be folded and compressed, and therefore, the length of the FPC board body can be adjusted without being bent, and the problem of circuit damage caused by excessive bending of the FPC board body can be avoided; the structural strength of the FPC of the combined structure is complemented by the reinforcing part, so that the anti-pulling capability of the FPC can be greatly improved, and the risk of breakage and damage at the joint of the FPC is reduced; the utility model has the advantages of strong practicability and strong popularization significance.

Description

Technical Field

[0001] The utility model relates to a circuit board, in particular to a foldable and compressible FPC. Background Art

[0002] FPC stands for "flexible printed circuit board", which is a printed circuit made of flexible insulating substrate. FPC provides excellent electrical performance, can meet the design needs of smaller and higher density installation, and also helps to reduce assembly processes and enhance reliability; FPC is the only solution to meet the requirements of miniaturization and mobility of electronic products. It can be bent, wound, and folded freely, and can withstand millions of dynamic bends without damaging the wires. It can be arranged arbitrarily according to the requirements of spatial layout, and can be moved and stretched arbitrarily in three-dimensional space, so as to achieve the integration of component assembly and wire connection; FPC can greatly reduce the size and weight of electronic products, and meet the needs of electronic products developing in the direction of high density, miniaturization, and high reliability.

[0003] Most existing FPCs are designed with an integrated structure. Although they use flexible materials to allow the board to be bent and folded to achieve port connections at different distances, if the bending angle is too large, it may still cause damage to the circuit inside the circuit board, thereby causing the FPC to malfunction. Utility Model Content

[0004] Based on this, it is necessary to provide a foldable and compressible FPC to address the deficiencies in the prior art.

[0005] A foldable and compressible FPC includes a folding portion, two fixing portions and two connecting terminals, wherein the two fixing portions are arranged on both sides of the folding portion, and the two connecting terminals are arranged at the outer ends of the two fixing portions. The folding portion includes two folding plates and a plurality of rotating shaft pages, wherein the two folding plates are arranged horizontally left and right and are located between the two fixing portions, and the plurality of rotating shaft pages respectively connect the two folding plates and the ends of the folding plates and the fixing portions, and the rotating shaft pages can be movably rotated.

[0006] Furthermore, the folding parts on the foldable and compressible FPC are provided with two groups, the two groups of folding parts are symmetrically arranged up and down and are both connected to the inner end portions of the two fixing parts.

[0007] Furthermore, the foldable and compressible FPC also includes a reinforcement part, and the two fixed parts are both provided with a sliding groove with an inner end and front and rear openings. The reinforcement part includes a reinforcement plate and sliding bars arranged at both ends of the reinforcement plate, the reinforcement plate is arranged parallel to the folding part up and down and its two ends extend into the sliding groove of the fixed part, and the two sliding bars are respectively engaged in the sliding groove and can be adjusted to slide left and right.

[0008] Furthermore, the connecting terminal includes a fixing seat and a rotating head, one end of the fixing seat is fixedly connected to the outer end of the fixing portion, and the other end is provided with a rotating shaft, and one end of the rotating head is engaged with the rotating shaft and can rotate movably.

[0009] Furthermore, the connection terminal further comprises two auxiliary rotating rings, both of which are semi-circular in design and are respectively arranged at the upper and lower ends of the fixing seat. The two auxiliary rotating rings and one side of the fixing seat can be spliced ​​to form an annular turning track, and one side of the rotating head is correspondingly provided with an auxiliary rotating shaft, which is engaged in the annular turning track and can move and slide.

[0010] Furthermore, the two auxiliary swivels are both connected to the rotating shaft of the fixing base and can be rotated and folded.

[0011] In summary, the beneficial effects of the foldable and compressible FPC of the utility model are as follows: by designing the FPC as a combination structure of a folding part and a fixed part, and providing a plurality of rotating shaft pages on the folding part so that it can be folded and compressed, the length of the FPC plate body can be adjusted without bending, which can avoid the problem of circuit damage caused by excessive bending of the FPC plate body; the structural strength of the FPC of the combined structure is supplemented by the reinforcement part, which can greatly improve the tensile strength of the FPC and reduce the risk of breakage and damage at the connection of the FPC; the connection terminals with movable rotation angles are designed so that the FPC can achieve terminal connection at different angles without twisting the plate body; the utility model is highly practical and has a strong promotional significance. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 This is a schematic diagram of the structure of a foldable and compressible FPC of the utility model;

[0013] Figure 2 for Figure 1 Schematic diagram of the decomposition structure;

[0014] Figure 3 for Figure 2 Schematic diagram of the exploded structure of the middle folding part;

[0015] Figure 4 for Figure 2 A schematic diagram of the structure of the middle fixed part;

[0016] Figure 5 for Figure 2 Schematic diagram of the exploded structure of the connecting terminals;

[0017] Figure 6 for Figure 2 Schematic diagram of the structure of the middle reinforcement part. DETAILED DESCRIPTION

[0018] In order to make the purpose, technical solution and advantages of the utility model more clear, the utility model is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the utility model and are not used to limit the utility model.

[0019] like Figures 1 to 6 As shown, the utility model provides a foldable and compressible FPC 100, which includes a folding portion 10, two fixing portions 20 and two connecting terminals 30, wherein the two fixing portions 20 are arranged at both sides of the folding portion 10, and the two connecting terminals 30 are arranged at the outer ends of the two fixing portions 20.

[0020] The folding part 10 includes two folding plates 11 and a plurality of rotating shaft pages 12. The two folding plates 11 are horizontally arranged left and right and are located between the two fixed parts 20. The plurality of rotating shaft pages 12 are respectively connected to the two folding plates 11 and the ends of the folding plates 11 and the fixed parts 20. The rotating shaft pages 12 are movable and rotatable. Specifically, in this embodiment, the folding part 10 on the foldable and compressible FPC 100 is provided with two groups. The two groups of folding parts 10 are symmetrically arranged up and down and are both connected to the inner ends of the two fixed parts 20.

[0021] The rotating shaft 12 can support the folding plate 11 to rotate and transmit electrical signals of various parts of the FPC structure. When the length of the FPC needs to be adjusted to adapt to the distance between the two ports, the folding plate 11 only needs to be rotated along the rotating shaft 12 to make the folding plate 11 bulge, and the distance between the fixing parts 20 on both sides will be shortened to match the distance between the ports. Since the rotating shaft structure is used instead of directly bending the plate body, the circuit of the FPC will not be damaged.

[0022] The foldable and compressible FPC 100 further includes a reinforcing portion 40, and the two fixing portions 20 are both provided with a sliding groove 21 with an inner end and front and rear openings. The reinforcing portion 40 includes a reinforcing plate 41 and sliding bars 42 provided at both ends of the reinforcing plate 41. The reinforcing plate 41 is arranged vertically parallel to the folding portion 10 and its two ends extend into the sliding groove 21 of the fixing portion 20. The two sliding bars 42 are respectively engaged in the sliding groove 21 and can be adjusted to slide left and right.

[0023] The reinforcing portion 40 sandwiched between the folding portion 10 and the fixing portion 20 has a material strength that is more resilient than the strength of the FPC board. When the FPC is pulled, the reinforcing portion 40 can resist the pulling force to prevent the connection between the folding portion 10 and the fixing portion 20 from breaking. When the FPC is folded, the reinforcing portion 40 can extend into the sliding groove 21 without interfering with the shortening adjustment of the FPC.

[0024] The connection terminal 30 includes a fixing seat 31 and a rotating head 32. One end of the fixing seat 31 is fixedly connected to the outer end of the fixing portion 20, and the other end is provided with a rotating shaft 311. One end of the rotating head 32 is engaged with the rotating shaft 311 and can be movably rotated. When the required connection port is designed to be inclined, it is only necessary to synchronously adjust the rotating head 32 to rotate a certain angle to make it correspond to the connection port, and then plug it into the connection port. The rotatable connection terminal 30 allows the FPC to connect to the port at an inclined angle without twisting the board body, thereby preventing the FPC from being twisted and deformed for a long time and affecting the function of the internal circuit.

[0025] The connecting terminal 30 also includes two auxiliary swivels 33, both of which are semi-circular in design and are respectively arranged at the upper and lower ends of the fixing seat 31. The two auxiliary swivels 33 and one side of the fixing seat 31 can be spliced ​​to form an annular swivel track 331, and one side of the rotating head 32 is correspondingly provided with an auxiliary rotating shaft 321, and the auxiliary rotating shaft 321 is engaged in the annular swivel track 331 and can slide movably. Both of the auxiliary swivels 33 are connected to the rotating shaft of the fixing seat 31 and can be rotated and folded. The auxiliary swivels 33 are more convenient for adjusting and rotating the rotating head 32 of the connecting terminal 30, and the foldability of the auxiliary swivels 33 enables the FPC to save more space when no rotation adjustment is performed.

[0026] In summary, the beneficial effects of the foldable and compressible FPC100 of the utility model are: by designing the FPC as a combination structure of a folding part 10 and a fixed part 20, and providing a plurality of rotating shaft pages 12 on the folding part 10 so that it can be folded and compressed, the length of the FPC plate can be adjusted without bending, which can avoid the problem of circuit damage caused by excessive bending of the FPC plate; the structural strength of the FPC of the combined structure is supplemented by the reinforcement part 40, which can greatly improve the tensile strength of the FPC and reduce the risk of breakage and damage at the connection of the FPC; the design of the connection terminal 30 with a movable rotation angle allows the FPC to achieve terminal connection at different angles without twisting the plate; the utility model is highly practical and has a strong promotional significance.

[0027] The above-mentioned embodiment only expresses one implementation method of the utility model, and its description is relatively specific and detailed, but it cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. A foldable and compressible FPC, characterized in that: It includes a folding part, two fixed parts and two connecting terminals, the two fixed parts are arranged on both sides of the folding part, and the two connecting terminals are arranged at the outer ends of the two fixed parts; the folding part includes two folding plates and a plurality of rotating shaft pages, the two folding plates are arranged horizontally left and right and are located between the two fixed parts, the plurality of rotating shaft pages are respectively connected to the two folding plates and the ends of the folding plates and the fixed parts, and the rotating shaft pages can rotate movably.

2. The foldable and compressible FPC according to claim 1, characterized in that: The folding parts are provided with two groups, the two groups of folding parts are symmetrically arranged up and down and are both connected to the inner end portions of the two fixing parts.

3. The foldable and compressible FPC according to claim 2, characterized in that: It also includes a reinforcing part, and both fixed parts are provided with sliding grooves with inner ends and front and rear openings; the reinforcing part includes a reinforcing plate and sliding strips arranged at both ends of the reinforcing plate, the reinforcing plate and the folding part are arranged parallel to each other up and down and its two ends extend into the sliding groove of the fixed part, and the two sliding strips are respectively engaged in the sliding grooves and can be adjusted to slide left and right.

4. The foldable and compressible FPC according to claim 1, characterized in that: The connecting terminal comprises a fixing seat and a rotating head, one end of the fixing seat is fixedly connected to the outer end of the fixing part, and the other end is provided with a rotating shaft, and one end of the rotating head is engaged with the rotating shaft and can be movably rotated.

5. The foldable and compressible FPC according to claim 4, characterized in that: The connecting terminal also includes two auxiliary rotating rings, both of which are semi-circular in design and are respectively arranged at the upper and lower ends of the fixed seat; the two auxiliary rotating rings and one side of the fixed seat can be spliced ​​to form an annular turning track, and an auxiliary rotating shaft is correspondingly provided on one side of the rotating head, and the auxiliary rotating shaft is engaged in the annular turning track and can slide movably.

6. The foldable and compressible FPC according to claim 5, characterized in that: The two auxiliary rotating rings are both connected to the rotating shaft of the fixing base and can be rotated and folded.

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