Electronic equipment and circuit connecting assembly

Abstract

The invention provides electronic equipment and a circuit connection assembly, the electronic equipment comprises a first fixed part, a rotating part, a second fixed part and at least one layer of flexible circuit board, and the second fixed part and the first fixed part are respectively located at two sides of the rotating part along a first direction; the two ends, in the first direction, of the flexible circuit board are connected to the first fixing part and the second fixing part respectively, and at least part of the portion, located between the first fixing part and the second fixing part, of the flexible circuit board is connected to the rotating part. The flexible circuit board is provided with at least one strip-shaped hole, the strip-shaped hole extends in the first direction, and at least part of the strip-shaped hole is located between the first fixing part and the second fixing part. According to the flexible circuit board, the strip-shaped holes are formed in the flexible circuit board, the part, located between the first fixing part and the second fixing part, of the flexible circuit board can be divided into the multiple transmission sections with the small widths, and therefore excessive twisting of the flexible circuit board in the bending process can be avoided, and the service life of the flexible circuit board can be prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to an electronic equipment and a circuit connection component. Background Art

[0002] For foldable electronic products, the devices on both sides of the bending area are generally electrically connected through flexible printed circuits (FPCs). As the size of foldable electronic products increases and their functions improve, the demand for the number of signals increases dramatically. Correspondingly, the width of FPCs is getting wider and wider. During the folding process of electronic products, the risk of wider FPCs being twisted along their width direction is increasing, and this twisting problem will seriously affect the service life of FPCs. Summary of the invention

[0003] The purpose of the present application is to provide an electronic device and a circuit connection assembly to solve the problem in the prior art that the FPC width is too large and a large degree of distortion occurs during the folding process of the electronic device, resulting in a reduced life of the FPC.

[0004] The present application provides an electronic device, which includes a first fixed part, a rotating part, a second fixed part and at least one layer of flexible circuit board, wherein the second fixed part and the first fixed part are respectively located on both sides of the rotating part along the first direction; the two ends of the flexible circuit board in the first direction are respectively connected to the first fixed part and the second fixed part, and at least a part of the flexible circuit board located between the first fixed part and the second fixed part is connected to the rotating part; the flexible circuit board is provided with at least one strip hole, the strip hole extends in the first direction, and at least a part of the strip hole is located between the first fixed part and the second fixed part.

[0005] By setting strip holes on the flexible circuit board, the present application can divide the part of the flexible circuit board located between the first fixed part and the second fixed part into multiple transmission segments with smaller widths, thereby avoiding large twisting of the flexible circuit board during the bending process, thereby improving the service life of the flexible circuit board.

[0006] In a possible design, a length of the strip-shaped hole in the first direction is greater than or equal to a distance between the first fixing portion and the second fixing portion.

[0007] Among them, the part of the flexible circuit board that is prone to twisting is at the position where the flexible circuit board is aligned with the inner edge of the first fixing part, and the inner edge of the first fixing part is the edge of the first fixing part facing the side of the second fixing part. Similarly, the part of the flexible circuit board that is prone to twisting is also at the position where the flexible circuit board is aligned with the inner edge of the second fixing part, and the inner edge of the second fixing part is the edge of the second fixing part facing the side of the first fixing part. In this embodiment, the length of the strip hole in the first direction X is greater than or equal to the distance between the first fixing part and the second fixing part, which can ensure that the end of the strip hole can extend to the inner edge of the first fixing part and the inner edge of the second fixing part, so that two adjacent transmission sections can be separated by the strip hole at the inner edge of the first fixing part and the inner edge of the second fixing part, so that each transmission section has a smaller width at the position aligned with the inner edge of the first fixing part and the inner edge of the second fixing part, and each transmission section does not affect each other, so that the twisting amount can be effectively reduced and the service life of the flexible circuit board can be improved.

[0008] In a possible design, one end of the strip hole in the first direction is aligned with the inner edge of the first fixing portion; and / or the other end of the strip hole in the first direction is aligned with the inner edge of the second fixing portion.

[0009] Among them, when the flexible circuit board is relatively easy to twist on one side of the first fixed part, one end of the strip hole in the first direction X can be aligned with the inner edge of the first fixed part, so that two adjacent transmission segments can be separated by the strip hole at the position aligned with the inner edge of the first fixed part, so that the transmission segment has a smaller width at the position aligned with the inner edge of the first fixed part, and the transmission segments do not affect each other, thereby effectively reducing the twisting amount and improving the service life of the flexible circuit board.

[0010] In a possible design, the flexible circuit board is divided into multiple transmission segments by the strip holes, and the multiple transmission segments are parts of the flexible circuit board located between the first fixed part and the second fixed part, and at least some of the multiple transmission segments have different widths along the second direction; the second direction is perpendicular to the first direction.

[0011] The edges of each transmission section connected to the first fixing portion and the second fixing portion have a smaller width in the second direction Y, which can be less than 15 mm, thereby reducing the amount of torsional deformation and even preventing torsional deformation.

[0012] In a possible design, a plurality of the strip-shaped holes are arranged at intervals along the second direction, wherein the plurality of strip-shaped holes can separate a plurality of transmission segments, and can ensure that each transmission segment has a smaller width while achieving normal functions, thereby preventing the flexible circuit board from generating a large twist.

[0013] In a possible design, the width of the strip hole along the second direction is greater than or equal to 1 mm, and the second direction is perpendicular to the first direction, thereby ensuring that the distortion of the flexible circuit board is fully absorbed by the strip hole to ensure the overall stability of the flexible circuit board.

[0014] In a possible design, at least one of the first fixing portion and the second fixing portion is provided with a protruding portion, the protruding portion protrudes toward between the first fixing portion and the second fixing portion, and the transmission section is connected to the protruding portion.

[0015] In a possible design, the protrusions on the first fixing portion and / or the second fixing portion are multiple, and at least some of the protrusions have different protrusion lengths in the first direction. By providing the first protrusion, the distance between the first fixing portion and the second fixing portion at some positions can be reduced, thereby reducing the length of the transmission section.

[0016] In a possible design, the rotating part includes multiple connecting parts, each of which is connected to a corresponding one of the transmission segments, and the distance between at least some of the connecting parts and the first fixed part is different, and / or the distance between at least some of the connecting parts and the second fixed part is different.

[0017] Among them, no twisting will occur at the position where the flexible circuit board is connected to the connecting part, but the part of the flexible circuit board between the connecting part and the first fixed part and the part between the connecting part and the second fixed part are prone to twisting. Since the connecting part covers a certain length of the transmission segment in the first direction X, the length of the transmission segment will be reduced, so that the transmission segment with a larger width can have a smaller length.

[0018] In a possible design, the electronic device includes a first housing, a second housing, and a shaft assembly, wherein the first housing and the second housing are respectively located on both sides of the shaft assembly, and the first housing and the second housing are respectively rotatably connected to the shaft assembly; a portion of the first housing forms the first fixed portion, a portion of the second housing forms the second fixed portion, and the shaft assembly is the rotating portion. Thus, the number of components can be reduced, which is conducive to miniaturization of the electronic device.

[0019] In a possible design, the electronic device includes a first shell, a second shell and a hinge assembly, the first shell and the second shell are respectively located on both sides of the hinge assembly, and the first shell and the second shell are respectively rotatably connected to the hinge assembly; one side of the first fixing portion is connected to the flexible circuit board, and the side of the first fixing portion facing away from the flexible circuit board is connected to the first shell, one side of the second fixing portion is connected to the flexible circuit board, and the side of the second fixing portion facing away from the flexible circuit board is connected to the second shell. Among them, by providing the first fixing portion and the second fixing portion as independent structural parts, the structural reliability of the assembly of the flexible circuit board with the first shell and the second shell can be improved, and the flexible circuit board can also be ensured to have a stable form in the electronic device.

[0020] In a possible design, the first fixing part or the second fixing part is an integrally formed structure. Thus, on the one hand, the structural strength of the first fixing part and the second fixing part can be improved, and the flexible circuit board can be fixed on the first fixing part and the second fixing part, so that the reliability of the relative connection between the flexible circuit board and the first shell and the second shell can be improved through the first fixing part and the second fixing part; on the other hand, the number of parts can be reduced, thereby reducing the number of assembly tolerances of parts and ensuring the assembly accuracy of the first fixing part and the second fixing part.

[0021] In a possible design, the flexible circuit board is divided into a plurality of transmission segments by the strip-shaped holes, a plurality of the first fixing parts or the second fixing parts are provided, and each of the first fixing parts or the second fixing parts is connected to a corresponding transmission segment.

[0022] Among them, each first fixing part and each second fixing part can be processed and manufactured separately, thereby facilitating the processing of first fixing parts and second fixing parts of different specifications and sizes. At the same time, each first fixing part and second fixing part can ensure the relative fixing strength of the flexible circuit board and the first shell and the second shell, and can also reinforce each transmission section to ensure the stability of each transmission section.

[0023] In a possible design, the first shell and the second shell are both provided with a first positioning column and a second positioning column, the first fixing part and the second fixing part are both provided with a first positioning hole and a second positioning hole, the first positioning hole on the first fixing part or the second fixing part is respectively matched with a corresponding first positioning column, and the second positioning hole on the first fixing part or the second fixing part is respectively matched with a corresponding second positioning column; the gap between the second positioning column and the second positioning hole is larger than the gap between the first positioning column and the first positioning hole.

[0024] Among them, there is a relatively small matching gap between the first positioning column and the first positioning hole, which can realize the precise positioning of the first fixing part and the second fixing part. There is a relatively large matching gap between the second positioning column and the second positioning hole, which can realize the rough positioning of the first fixing part and the second fixing part on the one hand, and on the other hand, the large matching gap can provide adjustment space for the first fixing part and the second fixing part. When the electronic device is folded, the first fixing part and the second fixing part can be automatically adjusted to a suitable position through the gap between the second positioning column and the second positioning hole, so that at least part of the twisting amount generated by the flexible circuit board when bending can be transferred to the movement amount of the first fixing part and the second fixing part at the gap between the second positioning column and the second positioning hole, so that the twisting amount of the flexible circuit board can be reduced and the service life of the flexible circuit board can be improved.

[0025] In a possible design, the electronic device also includes a locking structure, which is pressed on the side of the first fixing portion or the second fixing portion facing away from the first shell or the second shell, and the locking structure is connected to the first shell or the second shell.

[0026] Among them, after the electronic device is repeatedly folded and the first fixing part is adjusted to a suitable position through the gap between the second positioning column and the second positioning hole, a locking structure can be used to press the first fixing part and the second fixing part on the side away from the corresponding first shell and the second shell, and then screws, pins, rivets and other connecting parts can be used to fasten the locking structure to the corresponding first shell and the second shell, so that the first fixing part can be fastened to the first shell and the second fixing part can be fastened to the second shell through the pulling force of the above-mentioned connecting parts.

[0027] In one possible design, the flexible circuit board is provided with multiple layers along the thickness direction of the electronic device, so that the signal quantity requirement can be met by multiple flexible circuit boards, and the width dimension of each flexible circuit board in the second direction Y can be reduced to avoid twisting of the flexible circuit board when bending.

[0028] In a possible design, the flexible circuit board is an integrally formed structure, that is, the flexible circuit board is an integral circuit board, and the strip holes can be directly processed and formed on the flexible circuit board, thereby reducing the number of parts and components and reducing matching errors.

[0029] The present application also provides a circuit connection component, which includes a flexible circuit board, a first fixing portion and a second fixing portion, wherein one end of the flexible circuit board in a first direction is connected to at least one first fixing portion, and the other end of the flexible circuit board in the first direction is connected to at least one second fixing portion; at least one strip hole is provided on the flexible circuit board, the strip hole extends in the first direction, and at least part of the strip hole is located between the first fixing portion and the second fixing portion.

[0030] The present application also provides a circuit connection component, which includes a flexible circuit board, wherein two ends of the flexible circuit board in a first direction are respectively used to be connected to an electronic device, and at least one strip hole is provided on the flexible circuit board, and the strip hole extends in the first direction.

[0031] It should be understood that the foregoing general description and the following detailed description are exemplary only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 A schematic diagram of an overly wide FPC after being twisted;

[0033] Figure 2 Another schematic diagram of an over-wide FPC after being twisted;

[0034] Figure 3 Another schematic diagram of an overly wide FPC after being twisted;

[0035] Figure 4 A schematic diagram of an electronic device provided in an embodiment of the present application in a usage state;

[0036] Figure 5 A schematic diagram of an electronic device provided in an embodiment of the present application in another usage state;

[0037] Figure 6 A partial schematic diagram of an electronic device in a flattened state provided by an embodiment of the present application;

[0038] Figure 7 This is a schematic diagram of an ideal state in which a flexible circuit board 1 with a relatively large width does not produce twisting in application;

[0039] Figure 8 A schematic diagram of a flexible circuit board 1 having a relatively large width after being twisted during application;

[0040] Fig. 9 This is a simulation diagram of the bending life of an existing flexible circuit board with a larger width;

[0041] Fig.10A schematic diagram of the structure of a flexible circuit board provided in an embodiment of the present application;

[0042] Fig.11 A state diagram of a flexible circuit board in application provided by an embodiment of the present application;

[0043] Fig.12 Another state diagram of the flexible circuit board provided in the embodiment of the present application in application;

[0044] Fig.13 A simulation diagram of the bending life of the flexible circuit board provided in this application;

[0045] Fig.14 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0046] Fig.15 A partial schematic diagram of an electronic device in a closed state provided by an embodiment of the present application;

[0047] Fig.16 A partial schematic diagram of an electronic device provided by an embodiment of the present application during the process of opening from a closed state to a flat state;

[0048] Fig.17 A partial schematic diagram of an electronic device in a flattened state provided by another embodiment of the present application;

[0049] Fig.18 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0050] Fig.19 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0051] Fig. 20 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0052] Fig.21 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0053] Fig. 22 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0054] Fig.23 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0055] Fig.24 A schematic diagram of an electronic device provided in an embodiment of the present application in a flattened state before being folded;

[0056] Fig.25A schematic diagram of an electronic device provided in an embodiment of the present application in a flattened state after repeated folding;

[0057] Fig.26 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0058] Fig. 27 Another state diagram of the flexible circuit board in application provided by the embodiment of the present application;

[0059] Fig.28 An exploded view of a multi-layer flexible circuit board in the thickness direction of an electronic device.

[0060] Reference numerals:

[0061] 1-Flexible circuit board;

[0062] 11- Strip hole;

[0063] 12-marginal area;

[0064] 13-transmission segment;

[0065] 2- first fixing part;

[0066] 21 - medial edge;

[0067] 3- second fixing part;

[0068] 31 - medial edge;

[0069] 4- rotating part;

[0070] 41-connecting part;

[0071] 5- protrusion;

[0072] 6-locking structure;

[0073] 100-first housing;

[0074] 200- second housing;

[0075] 300-shaft assembly;

[0076] 400-first positioning column;

[0077] 500- second positioning column;

[0078] 600-first positioning hole;

[0079] 700-second positioning hole;

[0080] X-first direction;

[0081] Y-second direction;

[0082] Z-thickness direction.

[0083] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application. DETAILED DESCRIPTION

[0084] In order to better understand the technical solution of the present application, the embodiments of the present application are described in detail below in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present application and are not used to limit the present application.

[0085] In the description of this application, unless otherwise clearly specified and limited, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance; unless otherwise specified or explained, the term "plurality" refers to two or more; the terms "connected" and "fixed" should be understood in a broad sense, for example, "connected" can be a fixed connection, a detachable connection, an integral connection, or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0086] For foldable electronic products, the devices on both sides of the bending area are generally electrically connected through a flexible printed circuit (FPC), wherein the FPC can pass through the bending area and can use its own flexibility to cooperate with the electronic product to fold or flatten. However, with the expansion of the size and improvement of the function of foldable electronic products, the number of signals on the FPC has also increased dramatically, which requires the width of the FPC to be wider and wider. However, due to the existence of the assembly tolerance of the FPC, during the folding process of the electronic device, an overly wide FPC will cause distortion in its width direction, which seriously affects the bending life of the FPC. Figures 1 to 3 The figure is a schematic diagram of an overly wide FPC after being twisted. For the sake of convenience, the length direction of the FPC is defined as the first direction X, and the width direction of the FPC is defined as the second direction Y. The first direction X is perpendicular to the second direction Y. The FPC will be twisted in the first direction X, causing part of the FPC at one end in the second direction Y to be compressed and part of the other end to be stretched. Figure 1 The state of the FPC when twisted by 1° is shown. The length of one end of the FPC twisted area after being stretched is 4 mm, and the corresponding other end is less than 4 mm. Figure 2 The state of the FPC when twisted 3° is shown. The length of one end of the FPC twisted area after being stretched is 6 mm, and the corresponding other end is less than 6 mm. Figure 3The state of the FPC when twisted by 10° is shown. The length of one end of the FPC twisted area after being stretched is 8mm, and the corresponding other end is less than 8mm. The above-mentioned twisting problems of the FPC will seriously affect the bending life of the FPC.

[0087] To this end, an embodiment of the present application provides an electronic device, Figure 4 A schematic diagram of an electronic device in a usage state provided by an embodiment of the present application, Figure 5 This is a schematic diagram of an electronic device provided in an embodiment of the present application in another usage state, referring to Figure 4 and Figure 5 , Figure 4 and Figure 5 The electronic device is shown as a foldable mobile phone only as an example. Figure 4 The state shown is the state of the foldable phone when it is flattened. Figure 5 The state shown is the state of the foldable mobile phone after being folded. Figure 6 A partial schematic diagram of an electronic device in a flattened state provided by an embodiment of the present application, referring to Figure 6 , Figure 6 The figure exemplarily shows the connection status of some parts at the position of the hinge assembly 300 in a foldable mobile phone, wherein the electronic device includes a first shell 100, a second shell 200, a flexible circuit board 1 and a hinge assembly 300, and a screen module can be carried above the first shell 100, the second shell 200 and the hinge assembly 300, the flexible circuit board 1 can pass through the hinge assembly 300, and both ends of the flexible circuit board 1 can be connected to the first shell 100 and the second shell 200, respectively.

[0088] Of course, the electronic device can also be a foldable computer, a foldable display, a wearable device, a vehicle-mounted device, etc., which uses a flexible circuit board to connect the devices on both sides of the bending area. This embodiment does not limit the specific type of electronic device.

[0089] Specifically, refer to Figure 6 The electronic device provided in the embodiment of the present application includes a first fixing portion 2, a rotating portion 4, a second fixing portion 3 and at least one layer of a flexible circuit board 1. The second fixing portion 3 and the first fixing portion 2 are respectively located on both sides of the rotating portion 4 along the first direction X, and the first fixing portion 2 and the second fixing portion 3 can rotate relative to the rotating portion 4.

[0090] Among them, illustratively, refer to Figure 6When the electronic device is a foldable device such as a foldable mobile phone or a foldable computer, the rotating portion 4 may be a hinge assembly 300, and the electronic device can rotate at the hinge assembly 300 to switch between a folded state and an unfolded state. For example, when the electronic device is a foldable flexible display, such as a flexible display including an organic light-emitting diode (OLED), the rotating portion 4 may be a part of the flexible display to achieve bending of the flexible display.

[0091] In addition, the first fixing part 2 and the second fixing part 3 may be, for example, a housing, a middle frame, etc. of an electronic device, and functional devices may be arranged on the first fixing part 2 and the second fixing part 3. As described above, for the electronic device Figure 5 For the folding mobile phone shown, the rotating part 4 can be a rotating shaft assembly 300, and the first fixing part 2 and the second fixing part 3 can be connected to the rotating shaft assembly 300 respectively, so that the first fixing part 2 and the second fixing part 3 can rotate relative to the rotating shaft assembly 300. Exemplarily, the first fixing part 2 and the second fixing part 3 can also be independent structural parts, such as metal sheets, and the first fixing part 2 and the second fixing part 3 can be installed on the housing and the middle frame of the electronic device, which can strengthen the connection and structural strength of the flexible circuit board 1.

[0092] Wherein, the two ends of the flexible circuit board 1 in the first direction X are respectively connected to the first fixing part 2 and the second fixing part 3, and at least part of the flexible circuit board 1 between the first fixing part 2 and the second fixing part 3 is connected to the rotating part 4. Specifically, the flexible circuit board 1 can be respectively bonded to the first fixing part 2, the second fixing part 3 and the rotating part 4 by glue. Exemplarily, when the first fixing part 2 and the second fixing part 3 are the shell or middle frame of the electronic device, or are part of the structure on the shell or middle frame of the electronic device, the flexible circuit board 1 can be bonded to the shell or middle frame of the electronic device by glue. Exemplarily, when the first fixing part 2 and the second fixing part 3 are independent structural parts such as metal sheets, the two ends of the flexible circuit board 1 can be respectively bonded to the corresponding first fixing part 2 and the second fixing part 3, so that the flexible circuit board 1, the first fixing part 2 and the second fixing part 3 are an integral circuit connection component, and then the first fixing part 2 and the second fixing part 3 respectively connected with the flexible circuit board 1 can be assembled to the shell or the middle frame of the electronic device, thereby, through the constraints of the first fixing part 2 and the second fixing part 3, the stability of the overall shape of the flexible circuit board 1 after being installed on the electronic device can be ensured.

[0093] Figure 7 FIG. 1 is a schematic diagram of an ideal state in which a flexible circuit board 1 having a larger width does not produce twisting in application, referring to FIG. Figure 7In an ideal state where there is no assembly tolerance between the flexible circuit board 1 and the first fixing part 2 and the second fixing part 3, the flexible circuit board 1 does not twist during operation. However, in the actual assembly process, there will be a certain assembly tolerance between the flexible circuit board 1 and the first fixing part 2 and the second fixing part 3, and when the electronic device is repeatedly folded and used, there may be slight movement at the connection position between the flexible circuit board 1 and the first fixing part 2 and the second fixing part 3, which will cause a certain amount of twisting of the flexible circuit board 1. For example, Figure 8 FIG. 1 is a schematic diagram of a flexible circuit board 1 having a larger width and twisting in application, referring to FIG. Figure 8 When the first fixing portion 2 and the second fixing portion 3 drive the two ends of the flexible circuit board 1 to fold relative to the rotating portion 4, if the width of the flexible circuit board 1 in the second direction Y is too large, for example, the width of the flexible circuit board 1 in the second direction Y is 20 mm to 100 mm, or even larger, the portion of the flexible circuit board 1 between the first fixing portion 2 and the second fixing portion 3 is prone to large twisting, and this twisting will cause a portion of the flexible circuit board 1 to be stretched by 3 to 8 mm in the first direction X. Figure 8 As shown in FIG. 1 , one side edge of the flexible circuit board 1 in the width direction is elongated by a distance H1 of 3 to 8 mm, which results in accelerated fatigue of the flexible circuit board 1 at the twisted position and reduced service life. Fig. 9 This is a simulation diagram of the bending life of an existing flexible circuit board with a larger width. Fig. 9 The bending life of the flexible circuit board is 62,000 times.

[0094] In order to reduce fatigue of the flexible circuit board 1 and increase its service life, in this embodiment, Fig.10 The schematic diagram of the structure of the flexible circuit board 1 provided in the embodiment of the present application is shown in FIG. Fig.10 , the flexible circuit board 1 is provided with at least one strip hole 11, the strip hole 11 extends in the first direction X, and at least part of the strip hole 11 is located between the first fixing part 2 and the second fixing part 3. Among them, the flexible circuit board 1 is an integrally formed structure, that is, the flexible circuit board 1 is an integral circuit board, and the strip hole 11 will not penetrate the edge of the flexible circuit board 1 in the first direction X, that is, the area near the edge on both sides of the flexible circuit board 1 in the first direction X still has a certain width, and this part of the edge area 12 on both sides of the flexible circuit board 1 can be connected to the first fixing part 2 and the second fixing part 3, and this part of the edge area 12 can be arranged with a transmission line, that is, the flexible circuit board 1 has a transmission line layer inside, and part of the transmission line in the transmission line layer can be located in the above-mentioned edge area 12, and this part of the transmission line located in the above-mentioned edge area 12 can be easily connected to other devices or lines outside the flexible circuit board 1, such as being connected to an external connector.

[0095] In this embodiment, by setting a strip hole 11 between the first fixing portion 2 and the second fixing portion 3, the strip hole 11 can divide the portion of the flexible circuit board 1 located between the first fixing portion 2 and the second fixing portion 3 into a plurality of transmission segments 13, thereby making each transmission segment 13 have a smaller width, for example, the width of each transmission segment 13 in the second direction Y can be controlled within 15 mm. Fig.11 A state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.11 During the folding process of the electronic device, the transmission section 13 with a smaller width is less likely to twist. Fig.12 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.12 Even if the transmission segment 13 is twisted, due to the small width of the transmission segment 13, the twisting amount H2 of the transmission segment 13 in the first direction X can be controlled within 1.5 mm, and since two adjacent transmission segments 13 are separated by the strip hole 11, the states of the two adjacent transmission segments 13 do not affect each other, and the influence of this tiny twisting amount on the fatigue life of the flexible circuit board 1 can be ignored. Fig.13 The bending life simulation diagram of the flexible circuit board provided in this application is shown in FIG. Fig.13 The service life of the flexible circuit board with the strip hole 11 is 198,000 times, which is relatively Figure 7 The flexible circuit board shown in the figure has a bending life of more than 3 times that of the flexible circuit board provided in the embodiment of the present application.

[0096] Therefore, in this embodiment, by setting the strip hole 11 on the flexible circuit board 1, the part of the flexible circuit board 1 located between the first fixed part 2 and the second fixed part 3 can be divided into multiple transmission segments 13 with smaller widths, thereby avoiding the flexible circuit board 1 from generating large twisting during the folding process of the electronic device, thereby improving the service life of the flexible circuit board 1.

[0097] The width of the strip hole 11 along the second direction Y may be greater than or equal to 1 mm, so that the strip hole 11 can fully absorb the distortion of the flexible circuit board 1 and ensure the overall stability of the flexible circuit board 1. Of course, in some other application scenarios, the width of the strip hole 11 may also be less than 1 mm, which is not limited in this embodiment.

[0098] As a specific implementation, the length of the strip hole 11 in the first direction X is greater than or equal to the distance between the first fixing portion 2 and the second fixing portion 3. Fig.11The part of the flexible circuit board 1 that is prone to twisting is at a position where the flexible circuit board 1 is aligned with an inner edge 21 of the first fixing portion 2, and the inner edge 21 of the first fixing portion 2 is an edge of the first fixing portion 2 facing a side of the second fixing portion 3. Similarly, the part of the flexible circuit board 1 that is prone to twisting is also at a position where the flexible circuit board 1 is aligned with an inner edge 31 of the second fixing portion 3, and the inner edge 31 of the second fixing portion 3 is an edge of the second fixing portion 3 facing a side of the first fixing portion 2. In this embodiment, the length of the strip hole 11 in the first direction X is greater than or equal to the distance between the first fixing portion 2 and the second fixing portion 3, so that the end of the strip hole 11 can extend to the inner edge 21 of the first fixing portion 2 and the inner edge 31 of the second fixing portion 3, so that two adjacent transmission segments 13 can be separated by the strip hole 11 at the inner edge 21 of the first fixing portion 2 and the inner edge 31 of the second fixing portion 3, so that each transmission segment 13 has a smaller width at the position aligned with the inner edge 21 of the first fixing portion 2 and the inner edge 31 of the second fixing portion 3, and each transmission segment 13 does not affect each other, thereby effectively reducing the twisting amount and improving the service life of the flexible circuit board 1.

[0099] As a specific implementation method, one end of the strip hole 11 in the first direction X is aligned with the inner edge 21 of the first fixing part 2; and / or, the other end of the strip hole 11 in the first direction X is aligned with the inner edge 31 of the second fixing part 3.

[0100] For example, when the flexible circuit board 1 is relatively easy to twist on one side of the first fixing part 2, one end of the strip hole 11 in the first direction X can be aligned with the inner edge 21 of the first fixing part 2, so that two adjacent transmission sections 13 can be separated by the strip hole 11 at the position aligned with the inner edge 21 of the first fixing part 2, so that the transmission section 13 has a smaller width at the position aligned with the inner edge 21 of the first fixing part 2, and each transmission section 13 does not affect each other, so that the twisting amount can be effectively reduced and the service life of the flexible circuit board 1 can be improved. The other end of the strip hole 11 in the first direction X may not extend to the inner edge 31 of the second fixing part 3, but of course it can also extend to the inner edge 31 of the second fixing part 3.

[0101] Exemplarily, when the flexible circuit board 1 is relatively easy to twist on one side of the second fixing part 3, the end of the strip hole 11 away from the first fixing part 2 in the first direction X can be aligned with the inner edge 31 of the second fixing part 3. The effect is the same as described above and will not be repeated here.

[0102] Exemplarily, the two ends of the strip hole 11 can extend to positions aligned with the inner edge 21 of the first fixing portion 2 and the inner edge 31 of the second fixing portion 3, respectively, thereby reducing the amount of twisting of the flexible circuit board 1 at the connection position with the first fixing portion 2 and the second fixing portion 3, so as to improve the service life of the flexible circuit board 1.

[0103] As a specific implementation method, refer to Fig.10 The flexible circuit board 1 is divided into a plurality of transmission sections 13 by the strip holes 11, referring to Fig.11 , the plurality of transmission segments 13 are the portions of the flexible circuit board 1 located between the first fixing portion 2 and the second fixing portion 3, and at least some of the plurality of transmission segments 13 have different widths along the second direction Y, and the second direction Y is perpendicular to the first direction X. As described above, the portion of the flexible circuit board 1 where torsional deformation occurs is mainly located in the region between the first fixing portion 2 and the second fixing portion 3, especially at the position where the flexible circuit board 1 is aligned with the inner edge 21 of the first fixing portion 2 and the inner edge 31 of the second fixing portion 3. In this embodiment, for the sake of convenience, the portions of the flexible circuit board 1 located between the first fixing portion 2 and the second fixing portion and separated by the strip hole 11 can be defined as transmission segments 13, and the edges of each transmission segment 13 connected to the first fixing portion 2 and the second fixing portion 3 have a smaller width in the second direction Y, which can be less than 15 mm, thereby reducing the amount of torsional deformation, or even preventing torsional deformation. In addition, the widths of some transmission segments 13 can be different, so that different signal transmission functions can be realized respectively. Of course, in some other embodiments, the widths of some transmission segments 13 can be the same, and this embodiment is not limited to this.

[0104] As a specific implementation, a plurality of strip holes 11 may be arranged at intervals along the second direction Y. Optionally, two strip holes 11 may be arranged at intervals, and the two strip holes 11 can separate three transmission segments on the flexible circuit board 1. Optionally, when the overall size of the flexible circuit board 1 is large, more than three strip holes 11 may be arranged, and more than three strip holes 11 can separate more transmission segments 13, which can ensure that each transmission segment 13 has a smaller width while achieving normal functions, thereby avoiding large twisting of the flexible circuit board 1.

[0105] Of course, in some other embodiments, when the overall size of the flexible circuit board 1 is small, only one strip hole 11 may be provided to separate the two transmission sections 13, so that the two transmission sections 13 can both perform normal functions and have a smaller width to avoid large twisting.

[0106] As a specific implementation manner, the length of the transmission section 13 in the first direction X is inversely proportional to the width of the transmission section 13 in the second direction Y. Fig.14 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.14 The larger the width of the transmission section 13 is, the smaller the length of the transmission section 13 is required to be, wherein the length of the transmission section 13 can be designed according to the width of the transmission section 13. When the width of the transmission section 13 is larger, the transmission section 13 is more likely to twist. Therefore, the structural stability of the transmission section 13 can be improved and the twisting can be reduced by reducing the length of the transmission section 13.

[0107] also, Fig.15 A partial schematic diagram of an electronic device in a closed state provided in an embodiment of the present application, referring to Fig.15 When the electronic device is in a closed state, the flexible circuit board 1 can be stretched as a whole, and there can be basically no wrinkles on the flexible circuit board 1. Fig.16 A partial schematic diagram of an electronic device provided in an embodiment of the present application during the process of opening from a closed state to a flat state, referring to Fig.16 In the process of gradually opening the electronic device to a flat state, the flexible circuit board 1 will be gradually squeezed, causing wrinkles on each transmission section 13 on the flexible circuit board 1. Fig.17 This is a partial schematic diagram of an electronic device in a flattened state provided by another embodiment of the present application. Fig.17 Can show Fig.11 The flexible circuit board 1 is shown in a flattened state in the electronic device. Fig.11 The transmission segments 13 shown in the figure have the same length in the first direction X, but different widths in the second direction Y. This causes the transmission segments 13 to be bent to different degrees when the electronic device is flattened, resulting in inconsistent undulations of the transmission segments 13 in the thickness direction of the electronic device (see FIG. Fig.17 ), affecting consistency.

[0108] To this end, in this embodiment, by making the transmission segment 13 with a larger width have a relatively smaller length and making the transmission segment 13 with a smaller width have a relatively larger length, the bending state of each transmission segment 13 after being stressed can be adjusted, so that the bending state of each transmission segment 13 can be made consistent (refer to Figure 6 ).

[0109] As a specific implementation method, refer to Fig.14 At least one of the first fixing part 2 and the second fixing part 3 is provided with a protruding part 5, the protruding part 5 protrudes toward between the first fixing part 2 and the second fixing part 3, and the transmission section 13 is connected to the protruding part 5. By providing the protruding part 5, the distance between the first fixing part 2 and the second fixing part 3 at some positions can be reduced, so that the length of the transmission section 13 can be reduced.

[0110] For example, refer to Fig.14 , Fig.14 exemplarily shows that there are three transmission segments 13, namely, transmission segment 13a, transmission segment 13b and transmission segment 13c, and the widths of transmission segments 13a, 13b and 13c decrease in sequence, but the lengths of transmission segments 13a, 13b and 13c increase in sequence. Specifically, the first fixing portion 2 and the second fixing portion 3 are provided with protruding portions 5 at both ends of transmission segment 13a and transmission segment 13b, while the first fixing portion 2 and the second fixing portion 3 are not provided with protruding portions 5 at both ends of transmission segment 13c, thereby, the length of transmission segment 13a and transmission segment 13b connected at the position of protruding portion 5 can be made shorter than the length of transmission segment 13c not connected at the position of protruding portion 5, and at the same time, the protruding length of protruding portion 5 connected to transmission segment 13a in the first direction X is longer than the length of protruding portion 5 connected to transmission segment 13b in the first direction X, thereby, the length of transmission segment 13a can be made shorter than the length of transmission segment 13b.

[0111] Exemplarily, one of the first fixing portion 2 and the second fixing portion 3 may be provided with the protruding portion 5 , while the other one is not provided with the protruding portion 5 . Fig.18 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.18 No protrusion 5 is provided on the first fixing portion 2, and protrusions 5 are provided on the second fixing portion 3 at the positions connected to the transmission segment 13a and the transmission segment 13b, respectively, so that the lengths of the transmission segments 13a and 13b can be made smaller than the length of the transmission segment 13c. At the same time, by making the protruding length of the protruding portion 5 connected to the transmission segment 13a greater than the protruding length of the protruding portion 5 connected to the transmission segment 13b, the length of the transmission segment 13a with a larger width can be made smaller than the length of the transmission segment 13b with a smaller width.

[0112] In addition, refer to Fig.14 When there are multiple protrusions 5 on the first fixing portion 2 and / or the second fixing portion 3, a step structure can be formed between the protrusions 5, that is, at least part of the protrusions 5 protruding between the first fixing portion 2 and the second fixing portion 3 have different lengths, so that at least part of the transmission section 13 can have different lengths to match the corresponding width.

[0113] Of course, in some other embodiments, when there are two transmission segments 13 and the widths of the two transmission segments 13 are different, a protrusion 5 can be provided on the first fixing portion 2 and / or the second fixing portion 3 connected to the transmission segment 13 with a wider width to reduce the length of the transmission segment 13 with a wider width.

[0114] As a specific implementation method, Fig.19 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.19 The rotating part 4 includes a plurality of connecting parts 41, each connecting part 41 is connected to a corresponding transmission section 13, and the distance between at least some of the connecting parts 41 and the first fixing part 2 is different, and / or the distance between at least some of the connecting parts 41 and the second fixing part 3 is different. When the rotating part 4 is a hinge assembly on a folding mobile phone, the connecting part 41 can be a door panel in the hinge assembly. Of course, the connecting part 41 can also be a reinforcement structure, such as a reinforcement metal plate, which can be fixed on the door panel of the hinge assembly. The flexible circuit board 1 will not be twisted at the position connected to the connecting part 41, while the part of the flexible circuit board 1 between the connecting part 41 and the first fixing part 2 and the part between the connecting part 41 and the second fixing part 3 is prone to twisting. Since the connecting part 41 covers a certain length of the transmission section 13 in the first direction X, the length of the transmission section 13 is reduced, so that the transmission section 13 with a larger width can have a smaller length.

[0115] As a specific implementation method, refer to Fig.19 , there may be multiple connecting parts 41, and at least some of the connecting parts 41 have different lengths in the first direction X; along the first direction X, the transmission segment 13 has a first length L1 between the connecting part 41 and the first fixing part 2, and the transmission segment 13 has a second length L2 between the connecting part 41 and the second fixing part 3, and the sum of the first length L1 and the second length L2 is inversely proportional to the width of the transmission segment 13 in the second direction Y.

[0116] Among them, refer to Fig.19 , the length of the connecting portion 41 connected to the transmission segment 13a in the first direction X is greater than the length of the connecting portion 41 connected to the transmission segment 13b in the first direction X, so that the sum of the first length L1 and the second length L2 on the transmission segment 13a with a larger width can be smaller than the sum of the first length L1 and the second length L2 on the transmission segment 13b with a smaller width. In addition, the rotating portion 4 may not be provided with a connecting portion 41 at the transmission segment 13c with the smallest width, so that the sum of the first length L1 and the second length L2 on the transmission segment 13c with the smallest width can be relatively maximized.

[0117] As a specific implementation method, as described above, refer to Figure 6, the electronic device may include a first shell 100, a second shell 200 and a hinge assembly 300, the hinge assembly 300 is the above-mentioned rotating part 4, the first shell 100 and the second shell 200 are respectively located on both sides of the hinge assembly 300, and the first shell 100 and the second shell 200 are respectively rotatably connected to the hinge assembly 300. Among them, for the electronic device such as a folding mobile phone or a folding computer, the first shell 100 and the second shell 200 may specifically be a middle frame or a back cover, etc., the first fixing part 2 and the second fixing part 3 may be the first shell 100 and the second shell 200 respectively, and when connecting the flexible circuit board 1, parts of the first shell 100 and the second shell 200 may be used to connect the flexible circuit board 1. Or, Fig. 20 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig. 20 The first fixing portion 2 and the second fixing portion 3 can be part of the structure on the first shell 100 and the second shell 200 respectively. For example, a part of the first shell 100 forms the first fixing portion 2, and a part of the second shell 200 forms the second fixing portion 3. The first fixing portion 2 and the second fixing portion 3 can be part of the surface of the first shell 100 and the second shell 200 respectively, and the flexible circuit board 1 can be bonded to the corresponding surfaces by glue.

[0118] As a specific implementation method, Fig.21 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.21 The electronic device includes a first housing 100, a second housing 200 and a hinge assembly 300. The first housing 100 and the second housing 200 are respectively located on both sides of the hinge assembly 300, and the first housing 100 and the second housing 200 are respectively rotatably connected to the hinge assembly 300. One side of the first fixing portion 2 is connected to the flexible circuit board 1, and the side of the first fixing portion 2 facing away from the flexible circuit board 1 is connected to the first housing 100. One side of the second fixing portion 3 is connected to the flexible circuit board 1, and the side of the second fixing portion 3 facing away from the flexible circuit board 1 is connected to the second housing 200. In this embodiment, the first fixing portion 2 and the second fixing portion 3 can be structural parts that are separately processed and manufactured, such as metal sheets, and the edge area 12 of the flexible circuit board 1 can be fixedly bonded to the first fixing portion 2 and the second fixing portion 3 by glue, so that the flexible circuit board 1, the first fixing portion 2 and the second fixing portion 3 form an integral structure. Then, the first fixing portion 2 and the second fixing portion 3 can be fixed to the corresponding first housing 100 and the second housing 200 by gluing, welding, etc. By providing the first fixing portion 2 and the second fixing portion 3 , the structural reliability of the assembly of the flexible circuit board 1 with the first shell 100 and the second shell 200 can be improved.

[0119] As a specific implementation method, refer to Fig.21, the first fixing part 2 or the second fixing part 3 is an integrally formed structure, that is, the first fixing part 2 can be directly formed in one process, so that one end of the flexible circuit board 1 is connected to one first fixing part 2; similarly, the second fixing part 3 can also be directly formed in one process, so that the other end of the flexible circuit board 1 is connected to one second fixing part 3. Therefore, on the one hand, the structural strength of the first fixing part 2 and the second fixing part 3 can be improved, and the flexible circuit board 1 can be fixed on the first fixing part 2 and the second fixing part 3, so that the reliability of the relative connection between the flexible circuit board 1 and the first shell 100 and the second shell 200 can be improved through the first fixing part 2 and the second fixing part 3; on the other hand, the number of parts can be reduced, thereby reducing the number of assembly tolerances of parts, and ensuring the assembly accuracy of the first fixing part 2 and the second fixing part 3. In addition, since the first fixing part 2 or the second fixing part 3 is an integrally formed structure, the corresponding protrusion 5 can be directly formed at the corresponding position during the molding process of the first fixing part 2 or the second fixing part 3.

[0120] As a specific implementation method, Fig. 22 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig. 22 , the flexible circuit board 1 is divided into a plurality of transmission sections 13 by the strip holes 11, and a plurality of first fixing parts 2 or second fixing parts 3 are provided, and each first fixing part 2 or second fixing part 3 is connected to a corresponding transmission section 13. In this embodiment, each first fixing part 2 and each second fixing part 3 can be manufactured separately, so that first fixing parts 2 and second fixing parts 3 of different specifications and sizes can be easily processed. At the same time, each first fixing part 2 and second fixing part 3 can ensure the relative fixing strength of the flexible circuit board 1 and the first shell 100 and the second shell 200, and can also reinforce each transmission section 13 to ensure the stability of each transmission section 13. Refer to Fig. 22 , for example, a first fixing portion 2 with a smaller length dimension in the first direction X can be processed separately, so that the first fixing portion 2 does not protrude from the edge of the first shell 100, and the first fixing portion 2 can be connected to the transmission segment 13c, so that the transmission segment 13c with a smaller width has a larger length. For example, a first fixing portion 2 with a larger length dimension in the first direction X can also be processed separately, so that at least part of the first fixing portion 2 can protrude from the edge of the first shell 100 to form a protrusion 5, and the first fixing portion 2 can be connected to the transmission segment 13a or the transmission segment 13b, so that the transmission segment 13a or the transmission segment 13b with a larger width has a smaller length.

[0121] As a specific implementation method, Fig.23 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.23The first shell 100 and the second shell 200 are both provided with a first positioning column 400 and a second positioning column 500, the first fixing part 2 and the second fixing part 3 are both independently processed and manufactured structural parts, and the first fixing part 2 and the second fixing part 3 are both provided with a first positioning hole 600 and a second positioning hole 700, the first positioning hole 600 on the first fixing part 2 or the second fixing part 3 is respectively matched with a corresponding first positioning column 400, and the second positioning hole 700 on the first fixing part 2 or the second fixing part 3 is respectively matched with a corresponding second positioning column 500; the gap between the second positioning column 500 and the second positioning hole 700 is larger than the gap between the first positioning column 400 and the first positioning hole 600.

[0122] There is a relatively small matching gap between the first positioning column 400 and the first positioning hole 600, which can realize the precise positioning of the first fixing part 2 and the second fixing part 3. There is a relatively large matching gap between the second positioning column 500 and the second positioning hole 700, which can realize the rough positioning of the first fixing part 2 and the second fixing part 3 on the one hand, and on the other hand, the large matching gap can provide adjustment space for the first fixing part 2 and the second fixing part 3. When the electronic device is folded, the first fixing part 2 and the second fixing part 3 can be automatically adjusted to a suitable position through the gap between the second positioning column 500 and the second positioning hole 700, so that at least part of the twisting amount generated by the flexible circuit board 1 when bending can be transferred to the movement amount of the first fixing part 2 and the second fixing part 3 at the gap between the second positioning column 500 and the second positioning hole 700, so that the twisting amount of the flexible circuit board 1 can be reduced and the service life of the flexible circuit board 1 can be improved.

[0123] For example, Fig.24 This is a schematic diagram of an electronic device provided in an embodiment of the present application in a flattened state before being folded, with reference to Fig.24 When determining the appropriate positions of the first fixing portion 2 and the second fixing portion 3 relative to the first shell 100 and the second shell 200, the first fixing portion 2 and the second fixing portion 3 can be placed on the corresponding first shell 100 and the second shell 200 respectively, and at the same time, the first positioning hole 600 can be sleeved on the corresponding first positioning column 400, and the second positioning hole 700 can be sleeved on the corresponding second positioning column 500, while the first fixing portion 2 and the second fixing portion 3 will not be fastened to the corresponding first shell 100 and the second shell 200. At this time, there is a gap a between the first positioning column 400 and the first positioning hole 600 on the first fixing portion 2, and there is also a gap a between the first positioning column 400 and the first positioning hole 600 on the second fixing portion 3. The gaps a at the two locations exist on the side where the two first positioning columns 400 are close to each other.

[0124] Then, the electronic device can be folded repeatedly. During the folding process, the first fixing portion 2 and the second fixing portion 3 will automatically adjust to a suitable position by utilizing the gap between the second positioning hole 700 and the second positioning column 500, and after a certain frequency of repeated folding, the first fixing portion 2 and the second fixing portion 3 tend to a stable position relative to the corresponding first shell 100 and the second shell 200, and the stable position is the suitable position to be determined as mentioned above. Fig.25 This is a schematic diagram of an electronic device provided in an embodiment of the present application in a flattened state after repeated folding, with reference to Fig.25 , there is a gap b between the second positioning column 500 and the second positioning hole 700 on the first fixing part 2, and there is also a gap b between the second positioning column 500 and the second positioning hole 700 on the second fixing part 3. The gaps b at the two locations exist on the side where the two second positioning columns 500 are far away from each other, and there is no gap on the side where the two second positioning columns 500 are close to each other. In other words, after the electronic device is repeatedly folded, the first fixing part 2 and the second fixing part 3 adjust to the side close to each other and tend to be stable. At this position, the flexible circuit board 1 has a small torsional deformation during the bending process.

[0125] As a specific implementation method, Fig.26 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig.26 The electronic device further includes a locking structure 6, which is pressed on the side of the first fixing portion 2 or the second fixing portion 3 away from the first shell 100 or the second shell 200, and the locking structure 6 is connected to the first shell 100 or the second shell 200. After the electronic device is repeatedly folded, the first fixing portion 2 is adjusted to a suitable position through the gap between the second positioning column 500 and the second positioning hole 700, and the locking structure 6 can be pressed on the side of the first fixing portion 2 and the second fixing portion 3 away from the corresponding first shell 100 and the second shell 200, and then the locking structure 6 can be fastened to the corresponding first shell 100 and the second shell 200 by screws, pins, rivets and other connecting members, so that the first fixing portion 2 can be fastened to the first shell 100 and the second fixing portion 3 can be fastened to the second shell 200 by the pulling force of the above-mentioned connecting members.

[0126] As a specific implementation method, Fig. 27 Another state diagram of the flexible circuit board 1 provided in the embodiment of the present application in application, referring to Fig. 27 , along the thickness direction Z of the electronic device, the flexible circuit board 1 is provided with multiple layers, Fig. 27The flexible circuit board 1 is exemplarily shown to be provided with three layers. Among them, when the number of signals to be transmitted on the flexible circuit board 1 is large, a flexible circuit board 1 with a larger area is required. Since the length of the flexible circuit board 1 in the first direction X is relatively fixed, the demand for the number of signals can only be met by increasing the width of the flexible circuit board 1 in the second direction Y. However, increasing the size of the flexible circuit board 1 in the width direction will cause a large twisting amount of the flexible circuit board 1 when it is bent.

[0127] To this end, in this embodiment, by stacking multiple layers of flexible circuit boards 1 in the thickness direction Z of the electronic device, the signal quantity requirement can be met by multiple flexible circuit boards 1, and the width dimension of each flexible circuit board 1 in the second direction Y can be reduced, thereby avoiding twisting of the flexible circuit board 1 when bending.

[0128] The structures and sizes of the flexible circuit boards of the various layers may be the same or different. Fig.10 and Fig. 27 , three-layer flexible circuit boards can be used Fig.10 The structure shown, that is, each layer of the flexible circuit board is provided with two strip holes 11, and three transmission sections are separated by the two strip holes 11. For example, Fig.28 This is an exploded view of the multi-layer flexible circuit board in the thickness direction Z of the electronic device, refer to Fig.28 , the three-layer flexible circuit board is a flexible circuit board 1a, a flexible circuit board 1b and a flexible circuit board 1c from top to bottom, wherein the flexible circuit board 1a is provided with one strip hole 11, the flexible circuit board 1b and the flexible circuit board 1c are both provided with two strip holes 11, and the width dimension of the flexible circuit board 1a in the second direction Y is smaller than the width dimensions of the flexible circuit boards 1b and 1c in the second direction Y. If the width dimension of the flexible circuit board 1a in the second direction Y is small enough, for example, less than 15 mm, the strip hole 11 may not be provided on the flexible circuit board 1a.

[0129] In addition, in some other embodiments, the flexible circuit board may be provided with only two layers, or may be provided with more than three layers, which is not limited in this embodiment.

[0130] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An electronic device, characterized in that: include: a first fixing portion; Rotating part; a second fixing portion, wherein the second fixing portion and the first fixing portion are respectively located on two sides of the rotating portion along the first direction; At least one layer of flexible circuit board, the two ends of the flexible circuit board in the first direction are respectively connected to the first fixing part and the second fixing part, and at least a part of the flexible circuit board located between the first fixing part and the second fixing part is connected to the rotating part; the flexible circuit board is provided with at least one strip hole, the strip hole extends in the first direction, and at least a part of the strip hole is located between the first fixing part and the second fixing part.

2. The electronic device according to claim 1, characterized in that: The length of the strip-shaped hole in the first direction is greater than or equal to the distance between the first fixing portion and the second fixing portion.

3. The electronic device according to claim 1 or 2, characterized in that: One end of the strip-shaped hole in the first direction is aligned with the inner edge of the first fixing portion; and / or, The other end of the strip-shaped hole in the first direction is aligned with the inner edge of the second fixing portion.

4. The electronic device according to claim 1, characterized in that: The flexible circuit board is divided into a plurality of transmission segments by the strip-shaped holes, the plurality of transmission segments being portions of the flexible circuit board located between the first fixing portion and the second fixing portion, and at least portions of the plurality of transmission segments having different widths along the second direction; The second direction is perpendicular to the first direction.

5. The electronic device according to claim 4, characterized in that: Along the second direction, a plurality of the strip-shaped holes are arranged at intervals.

6. The electronic device according to any one of claims 1 to 5, characterized in that: The width of the strip-shaped hole along a second direction is greater than or equal to 1 mm, and the second direction is perpendicular to the first direction.

7. The electronic device according to claim 4, characterized in that: At least one of the first fixing portion and the second fixing portion is provided with a protruding portion, the protruding portion protrudes toward between the first fixing portion and the second fixing portion, and the transmission section is connected to the protruding portion.

8. The electronic device according to claim 7, characterized in that: There are multiple protruding portions on the first fixing portion and / or the second fixing portion, and at least some of the protruding portions have different protruding lengths in the first direction.

9. The electronic device according to any one of claims 6 to 8, characterized in that: The rotating part includes a plurality of connecting parts, each of which is connected to a corresponding one of the transmission sections, and the distances between at least some of the connecting parts and the first fixed part are different, and / or the distances between at least some of the connecting parts and the second fixed part are different.

10. The electronic device according to claim 1, characterized in that: The electronic device comprises a first housing, a second housing and a shaft assembly, wherein the first housing and the second housing are respectively located on two sides of the shaft assembly, and the first housing and the second housing are respectively rotatably connected to the shaft assembly; Part of the first shell forms the first fixing portion, part of the second shell forms the second fixing portion, and the rotating shaft assembly is the rotating portion.

11. The electronic device according to claim 1, characterized in that: The electronic device comprises a first housing, a second housing and a shaft assembly, wherein the first housing and the second housing are respectively located on two sides of the shaft assembly, and the first housing and the second housing are respectively rotatably connected to the shaft assembly; One side of the first fixing portion is connected to the flexible circuit board, one side of the first fixing portion facing away from the flexible circuit board is connected to the first shell, one side of the second fixing portion is connected to the flexible circuit board, and one side of the second fixing portion facing away from the flexible circuit board is connected to the second shell.

12. The electronic device according to claim 11, characterized in that: The first fixing portion or the second fixing portion is an integrally formed structure.

13. The electronic device according to claim 11, characterized in that: The flexible circuit board is divided into a plurality of transmission sections by the strip-shaped holes, a plurality of the first fixing parts or the second fixing parts are provided, and each of the first fixing parts or the second fixing parts is connected to a corresponding transmission section.

14. The electronic device according to claim 11, characterized in that: The first shell and the second shell are both provided with a first positioning post and a second positioning post, the first fixing portion and the second fixing portion are both provided with a first positioning hole and a second positioning hole, the first positioning hole on the first fixing portion or the second fixing portion is respectively matched with a corresponding first positioning post, and the second positioning hole on the first fixing portion or the second fixing portion is respectively matched with a corresponding second positioning post; A gap between the second positioning column and the second positioning hole is greater than a gap between the first positioning column and the first positioning hole.

15. The electronic device according to claim 14, characterized in that: The electronic device further includes a locking structure, which is pressed against a side of the first fixing portion or the second fixing portion away from the first shell or the second shell, and is connected to the first shell or the second shell.

16. The electronic device according to any one of claims 1 to 15, characterized in that: The flexible circuit board is provided with multiple layers along the thickness direction of the electronic device.

17. The electronic device according to any one of claims 1 to 15, characterized in that: The flexible circuit board is an integrally formed structure.

18. A circuit connection assembly, characterized in that: It comprises a flexible circuit board, a first fixing portion and a second fixing portion, wherein one end of the flexible circuit board in a first direction is connected to at least one first fixing portion, and the other end of the flexible circuit board in the first direction is connected to at least one second fixing portion; At least one strip-shaped hole is provided on the flexible circuit board, the strip-shaped hole extends in the first direction, and at least a portion of the strip-shaped hole is located between the first fixing portion and the second fixing portion.

Images