Foldable electronic device

Abstract

The application provides a foldable electronic device, comprising a first main body, a second main body, a rotating mechanism and a flexible circuit board, the rotating mechanism comprises a support seat and a support plate, and the support seat and the support plate are stacked along the thickness direction of the foldable electronic device; the support seat comprises a first base and a second base, the first base and the second base are arranged along the length direction of the support plate, the first base and the second base are separately arranged, the first base is detachably fixed to the support plate, a first interval is formed between the first base and the support plate, and a part of the flexible circuit board is located in the first interval; and the second base is fixed to the support plate. When the flexible circuit board is detached, only the first base and the support plate need to be separated, and the second base does not need to be detached. Therefore, the flexible circuit board can be quickly detached from the mobile phone, the second base can be prevented from being damaged, and the maintenance cost is reduced.

Description

Foldable electronic devices

[0001] This application claims priority to the Chinese patent application filed with the China Patent Office on January 30, 2024, with application number 202420231656.3 and application name “Foldable Electronic Device”, the entire contents of which are incorporated by reference into this application. Technical Field

[0002] The present application relates to the technical field of foldable electronic devices, and in particular to a foldable electronic device. Background Art

[0003] With the development of science and technology, various foldable electronic devices have gradually become an indispensable part of life. Taking mobile phones as an example, in order to improve user experience and increase the functions of mobile phones, the display screens of mobile phones are getting larger and larger. In order to increase the display screen area of ​​mobile phones while reducing the size of mobile phones, foldable electronic devices have emerged.

[0004] Current foldable electronic devices utilize two main bodies to support their display screens. These two main bodies are connected by a folding structure, allowing them to unfold or fold relative to each other, thus achieving the desired display screen. The two main bodies each house a different circuit module. To ensure electrical connection and communication between the two circuit modules within the two main bodies, these current foldable electronic devices employ a flexible printed circuit (FPC) to electrically connect the two circuit modules.

[0005] However, in current foldable electronic devices, when problems arise with the flexible circuit board and require repair, the entire base needs to be removed from the foldable electronic device because the shaft-penetrating portion of the flexible circuit board is connected to the base of the rotating mechanism. This makes disassembly very difficult, and the base is easily damaged during removal, leading to increased repair costs. Summary of the Invention

[0006] The present application provides a foldable electronic device that reduces the difficulty of disassembling a flexible circuit board, thereby reducing maintenance costs.

[0007] The present application provides a foldable electronic device, comprising: a first body, a second body, a rotating mechanism, and a flexible circuit board.

[0008] The rotating mechanism is connected between the first body and the second body, and the rotating mechanism can make the first body and the second body relatively unfolded or relatively folded.

[0009] The first body may specifically include a first housing and a first functional module, the first functional module being disposed within the first housing and including components such as a first circuit board and a processor. The second body may specifically include a second housing and a second functional module, the second functional module being disposed within the second housing and including components such as a second circuit board and a sensor.

[0010] The relative expansion or folding of the first and second bodies actually refers to the relative expansion or folding of the first and second shells. When the first and second shells are relatively expanded, they are arranged sequentially along the width of the foldable electronic device, with an angle of 180 degrees between them. The rotation mechanism is obscured by the first and second shells. The first and second shells are stacked and arranged along the thickness of the foldable electronic device, with an angle of 0 degrees between them.

[0011] The flexible circuit board is disposed within the first body, the rotating mechanism, and the second body to electrically connect the first and second bodies. Specifically, the flexible circuit board may include a first flexible segment, a through-shaft segment, and a second flexible segment, which are sequentially connected. The first flexible segment is disposed within the first housing and electrically connected to the first circuit board. The second flexible segment is disposed within the second housing and electrically connected to the second circuit board. The through-shaft segment is disposed within the rotating mechanism, electrically connecting the first and second circuit boards sequentially via the first flexible segment, the through-shaft segment, and the second flexible segment, enabling communication between the processor on the first circuit board and sensors and other devices on the second circuit board.

[0012] The rotating mechanism includes a support base and a support plate, which are stacked along the thickness of the foldable electronic device. The support base includes a first base and a second base, which are arranged along the length of the support plate. The first base and the second base are separate bodies, and the first base is detachably fixed to the support plate. A first gap is defined between the first base and the support plate, and a portion of the flexible printed circuit board is located within the first gap, namely, the through-shaft section is located within the first gap. The second base is fixed to the support plate.

[0013] In this application, when a problem with the flexible circuit board requires repair, the shaft cover is first opened, and then the first base is removed from the support plate. There is no need to separate the second base from the support plate. The flexible circuit board and the first base can now be removed from the phone together. This shows that in this embodiment, when removing the flexible circuit board, only the first base needs to be separated from the support plate; the second base does not need to be removed. This allows the flexible circuit board to be quickly removed from the phone while preventing damage to the second base, thereby reducing repair costs.

[0014] In some embodiments, a first connector is provided at one end of the first base facing the second base. The first connector is provided with a first connecting hole, which extends through the first connector along its thickness. A first mating hole is provided on the side of the support plate facing the first base, and the first connecting hole and the first mating hole are coaxial. The foldable electronic device also includes a first fastener, which is provided in the first connecting hole and the first mating hole to removably secure the first base to the support plate. Using the first fastener to connect the first base and the support plate provides a simple structure and ease of operation.

[0015] In some embodiments, a first extension member is protruding from a surface of one side of the support plate facing the first connecting member, one end of the first extension member is fixed to the support plate, and the other end of the first extension member faces the first connecting member. A first mating hole is provided in the first extension member. By providing the first extension member and providing the first mating hole on the first extension member, the depth of the first mating hole along the Z-axis direction can be increased, thereby increasing the number of mating parts between the first fastener and the first mating hole to increase the stability of the connection. In addition, the first extension member is closer to the first connecting member, and the length of the screw of the first fastener can match that of the first extension member, and does not need to be set too long, which can avoid structural instability caused by the first fastener being too long.

[0016] In some embodiments, the first base is provided with a first connector at each end along the length of the foldable electronic device, and the two first connectors are staggered along the width of the foldable electronic device. That is, the two first fasteners are located at two diagonal positions of the first base, forming two support points of the first base. The line connecting the two support points intersects with the central axis of the first base along the Y-axis. This prevents the first base from rocking around its central axis along the Y-axis, thereby increasing the stability of the first base.

[0017] In some embodiments, there are two second bases, and along the length direction of the foldable electronic device, the first base is located between the two second bases. The two second bases are each provided with a second connecting member at one end facing the first base.

[0018] The first and second connectors are arranged along the width of the foldable electronic device. The first connector is provided with a first support portion on a side facing the second connector, and the second connector is provided with a second support portion on a side facing the first connector. Along the thickness direction, the first and second support portions overlap and contact each other, with the first support portion located on the side of the second support portion facing away from the support plate.

[0019] As can be seen from the above, both ends of the first base are equipped with a first connecting member, and both first connecting members are equipped with a first support portion. Both second bases are equipped with a second connecting member, and both second connecting members are equipped with a second support portion. During the assembly of the rotating mechanism, after the second base is placed on the support plate, the first base is placed between the two second bases, so that the two first support portions are stacked and contact the two second support portions, which can support the first base and facilitate the assembly of the first fastener.

[0020] In addition, the two first support portions are stacked and in contact with the two second support portions, respectively. The two first support portions are offset along the X-axis, and correspondingly, the two first support portions are also offset along the X-axis. The two first support portions constitute the two supported points of the first base, and the line connecting the two supported points intersects with the center axis of the first base along the Y-axis. Therefore, before assembling the first fastener, the first support portion and the second support portion are stacked and in contact, which can prevent the first base from rotating around its center axis in the Y-axis, increase the stability of the first base, and reduce the difficulty of assembling the rotation mechanism.

[0021] In addition, the two first supporting parts are respectively stacked and in contact with the two second supporting parts, which can increase the supported points of the second base and prevent the second base from rotating around its central axis in the Y-axis direction.

[0022] In some embodiments, a support column is provided between the support plate and the first connecting member, and opposite ends of the support column are fixed to the support plate and the first connecting member, respectively. The support column and the first supporting portion are respectively located on both sides of the first connecting hole along the width direction of the first supporting portion. Thus, before assembling the first fastener, the first base has the first supporting portion and the support column as supported points, and the first supporting portion and the support column are arranged at intervals along the X-axis direction. At this time, the supported points of the first base are increased, which can also be understood as that before the first fastener is assembled, the first supporting portion and the support column pre-position the first base to reduce the risk of the first base rotating around its center axis in the Y-axis direction. After the first fastener is assembled, the support column and the first supporting portion can continue to prevent the first base from rotating around the center axis in the Y-axis direction, so that the structural strength of the rotating mechanism is better.

[0023] In some embodiments, a first escape groove is recessed on a surface of the first connector facing the support plate. Along the thickness direction of the foldable electronic device, the first escape groove and the first mating hole are opposite each other. The first connection hole extends through the bottom surface of the first escape groove and a side surface of the first connector facing away from the support plate. A first extension member extends into the first escape groove at one end facing the first connector, with a gap between the first extension member and the bottom surface of the first escape groove.

[0024] It is understandable that if the first extension member and the bottom surface of the first avoidance groove contact each other to form another supported point, each first connecting member will have three supported points arranged in sequence along the X-axis. If any of the three supported points is not in the same plane as the other two supported points, it will cause the first base to wobble. However, it is difficult to control the three supported points to be in the same plane. Therefore, if the first extension member is arranged to contact the bottom surface of the first avoidance groove, the risk of the first base shaking around its central axis in the Y-axis direction will increase.

[0025] In this embodiment, a gap is provided between the first extension member and the bottom surface of the first avoidance groove, so that each first connecting member has two supported points arranged in sequence along the X-axis direction. The difficulty of controlling the two supported points to be located in the same plane is significantly lower than the difficulty of controlling the three supported points to be located in the same plane, thereby reducing the risk of the first base shaking around its central axis along the Y-axis direction.

[0026] In other embodiments, the first avoidance groove is not provided on the surface of the first connecting member facing the support plate. In this case, there is a gap between the first extending member and the surface of the first connecting member facing the support plate along the thickness direction of the foldable electronic device.

[0027] In some embodiments, the first base is provided with a first positioning portion, and the second base is provided with a second positioning portion. The first positioning portion and the second positioning portion abut against each other to pre-position the first base before assembling the first fastener, so that the first connecting hole and the first mating hole are coaxial, thereby facilitating assembly of the first fastener. After assembly of the first fastener, the first positioning portion and the second positioning portion remain in abutment, thereby increasing the stability of the first and second bases.

[0028] In some embodiments, the first connector has a first positioning surface on one end facing the second base, and the second base has a first mating surface on one end facing the first connector. Both the first positioning surface and the first mating surface are parallel to the width of the foldable electronic device. The first positioning surface and the first mating surface abut each other along the length of the foldable electronic device. The first positioning portion includes a first positioning surface, and the second positioning portion includes a first mating surface. Thus, the first positioning surfaces of the two first connectors abut against the first mating surfaces of the two second bases, respectively, limiting displacement of the first base along the Y-axis. This prevents misalignment of the center axis of the first connecting hole and the center axis of the first mating hole along the Y-axis, thereby increasing the stability of the first base before assembly of the first fastener. Of course, after assembly of the first fastener, the first positioning surface and the first mating surface remain in contact, increasing the stability of the first base. Furthermore, based on the principle of mutual force, that is, the first mating surface applies a holding force to the first positioning surface while the first positioning surface also applies a holding force to the first mating surface. Therefore, the abutment between the first positioning surface and the first mating surface further increases the stability of the second base.

[0029] In some embodiments, a second positioning surface is provided on a side of the first connector facing the second connector, and a second mating surface is provided on a side of the second connector facing the first connector. Both the second positioning surface and the second mating surface are parallel to the length of the foldable electronic device. Along the width of the foldable electronic device, the second positioning surface and the second mating surface abut against each other. The first positioning portion includes the second positioning surface, and the second positioning portion includes the second mating surface.

[0030] Thus, the second positioning surfaces of the two first connecting members respectively abut the two second mating surfaces of the two second connecting members, thereby limiting the movement of the first base along the X-axis, thereby preventing the central axis of the first connecting hole and the central axis of the first mating hole from misaligning along the Y-axis, and increasing the stability of the first base before the first fastener is assembled. In addition, after the first fastener is assembled, the second mating surface abuts the second positioning surface, which can continuously stabilize the first base and also increase the stability of the second base.

[0031] Furthermore, if the first positioning surface and the first mating surface are not in contact, and the second positioning surface and the second mating surface are also not in contact, the first base may still rotate about its central axis in the Z-axis direction. However, by providing abutment between the two first positioning surfaces and the two first mating surfaces, and / or abutment between the two second positioning surfaces and the two second mating surfaces, the first base can be restricted from rotating about its central axis in the Z-axis direction.

[0032] In some embodiments, a third positioning surface is provided on one end of the first base facing the second connector, and a third mating surface is provided on one end of the second connector facing the first base. Both the third positioning surface and the third mating surface are parallel to the width of the foldable electronic device. Along the length of the foldable electronic device, the third positioning surface and the third mating surface abut against each other. The first positioning portion includes the third positioning surface, and the second positioning portion includes the third mating surface.

[0033] Thus, before assembling the first fastener, the two third positioning surfaces at either end of the first base abut against the third mating surfaces of the two second connectors, further limiting displacement of the first base along the Y-axis and preventing misalignment of the center axis of the first connecting hole and the center axis of the first mating hole along the Y-axis. This further enhances the stability of the first base before assembling the first fastener. Furthermore, after assembly of the first fastener, the abutment of the third mating surfaces against the third positioning surfaces maintains the stability of the first base while also enhancing the stability of the second base.

[0034] In some embodiments, the first connector is provided with a positioning hole, a positioning post is provided on the side of the support plate facing the first connector, the first positioning portion includes the positioning hole, and the second positioning portion includes the positioning post. Alternatively, the support plate is provided with a positioning hole, and a positioning post is provided on the side of the first connector facing the support plate. The first positioning portion includes the positioning post, and the second positioning portion includes the positioning hole. A portion of the positioning post extends into the positioning hole. This further constrains the first base about its central axis along the Z-axis, thereby further increasing the stability of the first base before assembly of the first fastener.

[0035] In some embodiments, the foldable electronic device further includes a second fastener, and the second base is detachably connected to the support plate via the second fastener.

[0036] In some embodiments, the foldable electronic device further includes a third fastener, and the support plate is detachably connected to the shaft cover via the third fastener.

[0037] In some embodiments, a second gap is provided between the shaft cover and the first base along the thickness direction of the foldable electronic device, and the second gap is used to avoid the first fastener. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0039] FIG1 is a schematic structural diagram of a foldable electronic device in a first state provided by an embodiment of the present application.

[0040] FIG2 is a schematic structural diagram of the foldable electronic device shown in FIG1 in a second state.

[0041] FIG3 is a schematic diagram of the split structure of the foldable electronic device shown in FIG2 .

[0042] FIG4 is a schematic diagram of a partial structure of the main body of the foldable electronic device shown in FIG3 .

[0043] FIG5 is a schematic diagram of a portion of the structure of the rotating mechanism of the foldable electronic device shown in FIG3 .

[0044] FIG6 is a schematic diagram of the split structure of the rotating mechanism shown in FIG5 .

[0045] FIG. 7 is a schematic structural diagram of the rotating mechanism shown in FIG. 5 from another perspective.

[0046] FIG8 is a structural schematic diagram of the rotating mechanism shown in FIG5 from another perspective.

[0047] FIG. 9 is a schematic diagram of a partial structure of the rotating mechanism shown in FIG. 6 .

[0048] FIG10 is a schematic split diagram of a partial structure of the rotating mechanism shown in FIG9 from another perspective.

[0049] FIG11 is a schematic cross-sectional structural diagram of the rotating mechanism shown in FIG5 .

[0050] FIG12 is a schematic cross-sectional view of a portion of the rotating mechanism shown in FIG5.

[0051] FIG13 is a schematic diagram of another partial structure of the rotating mechanism shown in FIG5.

[0052] FIG14 is a schematic diagram of a partial structure of the rotating mechanism shown in FIG5 . DETAILED DESCRIPTION

[0053] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0054] Foldable electronic devices include, but are not limited to, cell phones, notebook computers, tablet personal computers, personal digital assistants, wearable devices, or mobile devices. In the embodiments of the present application, a cell phone is used as an example for description.

[0055] Please refer to Figures 1 and 2. This application provides a schematic diagram of the structure of a foldable electronic device 1000 in a first state according to an embodiment of the present application, and Figure 2 is a schematic diagram of the structure of the foldable electronic device 1000 in a second state as shown in Figure 1. The foldable electronic device 1000 shown in Figure 1 is in a folded state, and the foldable electronic device 1000 shown in Figure 2 is in an unfolded state.

[0056] For the sake of convenience of description, the width direction of the foldable electronic device 1000 is defined as the X-axis direction, the length direction of the foldable electronic device 1000 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction and the Z-axis direction are perpendicular to each other.

[0057] It should be noted that the angles illustrated in the embodiments of this application are all allowed to have slight deviations. For example, the folding angle of the foldable electronic device 1000 shown in Figure 1 is 0 degrees, and the deviation can be ±5 degrees. The unfolding angle of the foldable electronic device 1000 shown in Figure 2 is 180 degrees, and the deviation can be ±5 degrees. The angles illustrated in the examples below should be understood in the same way.

[0058] Please refer to Figure 3, which is a schematic diagram of the split structure of the foldable electronic device 1000 shown in Figure 2. The embodiment of the present application is described using the foldable electronic device 1000 as a mobile phone. The mobile phone includes a main body 200 and a display screen 300, and the display screen 300 is installed on the main body 200. The display screen 300 is a flexible screen, and the display screen 300 includes a display surface and a mounting surface, and the display surface and the mounting surface are arranged opposite to each other. The display surface is used to display text, images, videos, etc. The display screen 300 includes a first display part 310, a second display part 320 and a third display part 330. The third display part 330 is located between the first display part 310 and the second display part 320.

[0059] The main body 200 includes a first body 210, a second body 220, and a rotating mechanism 230. The display screen 300 is mounted on the main body 200, and the mounting surface is fixedly connected to the main body 200. Specifically, the first display portion 310 is mounted on the first body 210, and the second display portion 320 is mounted on the second body 220. The rotating mechanism 230 and the third display portion 330 are arranged opposite to each other to achieve bending of the display screen 300. The width of the third display portion 330 along the X-axis direction can be greater than or equal to the width of the rotating mechanism 230. The side of the first body 210 and the second body 220 facing away from the display screen 300 is the outer side of the electronic device, and the side supporting the display screen 300 is the inner side.

[0060] It should be noted that the directional terms such as "top", "bottom", "left", "right", "front" and "back" used in the embodiment of the present application to describe the foldable electronic device 1000 are mainly explained based on the display orientation of the foldable electronic device 1000 in Figures 2 and 5, with the direction facing the positive direction of the Z axis as "top" and "up", the direction facing the negative direction of the Z axis as "bottom" and "back", the direction facing the positive direction of the X axis as "right", the direction facing the negative direction of the X axis as "left", the direction facing the positive direction of the Y axis as "back", and the direction facing the negative direction of the Y axis as "front". It does not constitute a limitation on the orientation of the foldable electronic device 1000 in actual application scenarios.

[0061] The rotating mechanism 230 enables the main body 200 to switch between a folded state and an unfolded state. Specifically, the rotating mechanism 230 also has a folded state and an unfolded state. When the rotating mechanism 230 is in the folded state, the mobile phone is in the folded state. At this time, the first body 210 and the second body 220 are stacked along the Z-axis with an angle of 0 degrees between them. The display screen 300 is in the folded state, with a smaller display area, making it easier for users to operate with one hand and convenient for storage and portability. When the rotating mechanism 230 is in the unfolded state, the mobile phone is in the unfolded state. At this time, the first body 210 and the second body 220 are arranged along the X-axis with an angle of 180 degrees between them. The display screen 300 is also in the unfolded state, with a larger display area, making it easier for users to view and improving the user experience. When the angle between the first body 210 and the second body 220 is 180 degrees and 0 degrees, there is a tolerance range for assembly use. For example, when the angle between the first body 210 and the second body 220 is 180 degrees, the tolerance is ±10 degrees. Similarly, when the included angle between the first body 210 and the second body 220 is 0 degrees, the tolerance is also ±10 degrees.

[0062] Please refer to Figure 4, which is a schematic diagram of a portion of the main body 200 of the foldable electronic device 1000 shown in Figure 3. The first main body 210 includes a first housing 240, a first functional module 250, and a first battery 260. The first housing 240 is provided with a first accommodating cavity and a first accommodating slot (not shown). The first functional module 250 and the first battery 260 are both mounted within the first accommodating cavity. The first accommodating slot is used to accommodate the rotating mechanism 230. The second main body 220 includes a second housing 270, a second functional module 280, and a second battery 290. The second housing 270 is provided with a second accommodating cavity and a second accommodating slot (not shown). The second functional module 280 is mounted within the second accommodating cavity. The second accommodating slot is used to accommodate the rotating mechanism 230. The first display portion 310 of the display screen 300 is actually mounted to the first housing 240, and the second display portion 320 of the display screen 300 is actually mounted to the second housing 270.

[0063] The first receiving groove and the second receiving groove are connected to form a receiving groove. The rotating mechanism 230 is installed in the receiving groove to realize the rotation connection between the first shell 240 and the second shell 270. The first shell 240 and the second shell 270 can rotate relative to each other through the rotating mechanism 230, so that the main body 200 can switch between the folded state and the unfolded state.

[0064] In this embodiment, the first functional module 250 is used to electrically connect to the second body 220 so that the first body 210 and the second body 220 can transmit information. The first functional module 250 may include a first printed circuit board (PCB), a processor, a memory, a communication module, and a first battery 260, among other components. The first PCB may be the motherboard of the mobile phone. The first battery 260 and the first PCB are arranged along the Y-axis. The processor, memory, and communication module are integrated on the first PCB. The memory and communication module are electrically connected to the processor, respectively. The memory is used to store instructions and data. The communication module can implement wireless communication such as G / G / G of the mobile phone. The communication module can also implement wireless communication such as wireless local area networks (WLAN), Bluetooth (BT), and near field communication (NFC) of the mobile phone. The first functional module 250 may also include components to implement other functions, which are not listed here.

[0065] In this embodiment, the second functional module 280 is used to be electrically connected to the first functional module 250 of the first body 210 , so that the second body 220 and the first body 210 can transmit information.

[0066] The second functional module 280 includes components such as a second circuit board, an antenna, a motor, and a sensor module. The antenna, motor, and sensor module are integrated on the second circuit board, and the second battery 290 is arranged along the Y-axis direction with the second circuit board. The first battery 260 and the second battery 290 can provide power to other components such as the motor, sensor module, antenna, and display screen 300 to ensure the normal use of the mobile phone. The motor can generate vibration prompts, which can be used for incoming call vibration prompts or touch vibration feedback. The sensor module includes a gyroscope sensor and a temperature sensor. The gyroscope sensor can be used to determine the movement posture of the mobile phone. The temperature sensor is used to detect the temperature so that the processor can execute the temperature processing strategy according to the temperature detected by the temperature sensor to prevent the mobile phone from overheating or abnormalities due to low temperature. The second functional module 280 can also include components that implement other functions, which are not listed here one by one.

[0067] Continuing with Figure 4 , the main body 200 also includes a flexible circuit board 400, which includes a first flexible segment 410, a through-shaft segment 420, and a second flexible segment 430, which are sequentially connected along the X-axis. The flexible circuit board 400 is disposed between the first main body 210, the rotation mechanism 230, and the second main body 220, so that the flexible circuit board 400 connects the first and second main bodies 210, 220, enabling communication between the first and second main bodies 210, 220. Specifically, the first flexible segment 410 is disposed within the first accommodating cavity and is electrically connected to the first circuit board. The through-shaft segment 420 is disposed within the rotation mechanism 230. The second flexible segment 430 is disposed within the second accommodating cavity of the second main body 220 and is electrically connected to the second circuit board.

[0068] In this embodiment, the first circuit board and the second circuit board are connected through a flexible circuit board 400 to realize electrical connection between the devices in the first functional module 250 and the devices in the second functional module 280. For example, the battery, antenna, motor and sensor module and other devices in the second functional module 280 can all be connected to the processor in the first functional module 250 through the flexible circuit board 400; the antenna in the second functional module 280 can also be connected to the communication module in the first functional module 250 through the flexible circuit board 400.

[0069] In this embodiment, please refer to Figures 5 and 6. Figure 5 is a schematic diagram of a portion of the rotating mechanism 230 of the foldable electronic device 1000 shown in Figure 3. Figure 6 is a schematic diagram of the separate structure of the rotating mechanism 230 shown in Figure 5. Figures 5 and 6 only show a portion of the rotating mechanism 230 along the Y-axis. In practice, the length of the rotating mechanism 230 along the Y-axis is substantially the same as the length of the first housing 240 and the second housing 270.

[0070] The rotating mechanism 230 includes a support base 100, a support plate 110, a shaft cover 120, a synchronization assembly (not shown), a damping assembly (not shown) and a swing arm assembly (not shown). The support base 100, the support plate 110 and the shaft cover 120 are all long strips, and the length directions of the support base 100, the support plate 110 and the shaft cover 120 are all parallel to the Y-axis direction. Along the Y-axis direction, the lengths of the support base 100, the support plate 110 and the shaft cover 120 are roughly the same. Along the Z-axis direction, the support plate 110, the support base 100 and the shaft cover 120 are stacked in sequence. The support base 100 and the support plate 110 are fixedly connected, and the support plate 110 and the shaft cover 120 are fixedly connected.

[0071] When the phone is folded, the shaft cover 120 is located within the receiving slot. When the phone is unfolded, the shaft cover 120 is exposed from the receiving slot. The shaft cover 120 is located between the first housing 240 and the second housing 270 and serves as the phone's exterior component. The support base 100 is used to mount the synchronization assembly, damping assembly, and swing arm assembly. The support plate 110 supports the third display portion 330 of the display screen 300.

[0072] In this embodiment, the support base 100 includes a first base 10 and two second bases 20. Along the Y-axis, the first base 10 is located between the two second bases 20, and the first base 10 and the two second bases 20 are separately provided. The first base 10 and the support plate 110 are detachably fixedly connected. Along the Z-axis, a first gap 101 is defined between the first base 10 and the support plate 110. This first gap 101 is used to accommodate the threading section 420 of the flexible printed circuit board 400, allowing for smooth threading of the flexible printed circuit board 400.

[0073] The length of the first base 10 along the Y-axis direction and the position of the first base 10 are determined according to the length and position of the through-axis section 420 of the flexible circuit board 400. When setting, the first base 10 and the through-axis section 420 are opposite to each other along the Z-axis direction, and the projection of the through-axis section 420 on the support base 100 is completely located on the first base 10.

[0074] In this embodiment, the support base 100 is divided into a first base 10 and a second base 20, and the first base 10 and the second base 20 are separately arranged. The first base 10 and the support plate 110 are detachably connected, and the second base 20 can be detachably connected to the support plate 110, or the second base 20 and the support plate 110 are integrally formed and fixed.

[0075] When a problem with the flexible circuit board 400 requires repair, the shaft cover 120 is first opened, and then the first base 10 is removed from the support plate 110. There is no need to separate the second base 20 from the support plate 110. The flexible circuit board 400 can now be removed from the phone together with the first base 10. As can be seen, in this embodiment, when removing the flexible circuit board 400, only the first base 10 needs to be separated from the support plate 110; the second base 20 does not need to be removed. This allows the flexible circuit board 400 to be quickly removed from the phone while preventing damage to the second base 20, thereby reducing repair costs.

[0076] In some embodiments, please refer to FIG. 7 , which is a schematic structural diagram of the rotating mechanism 230 shown in FIG. 5 , viewed from another perspective. Along the Z-axis, the two second bases 20 have equal thickness, and the thickness of each second base 20 is greater than that of the first base 10. When the support plate 110, support base 100, and shaft cover 120 are stacked sequentially along the Z-axis, the top surface of each second base 20 contacts the bottom surface of the support plate 110, and the bottom surface of each second base 20 contacts the top surface of the shaft cover 120. The first base 10 is located within the space enclosed by the support plate 110 and the two second bases 20. Because the thickness of the first base 10 is less than that of the second bases 20, the top surface of the first base 10 and the bottom surface of the support plate 110 do not contact each other, thereby forming a first gap 101. The first gap 101 accommodates the shaft-through section 420 of the flexible printed circuit board 400, and the shaft-through section 420 is fixed within the first gap 101. Similarly, the bottom surface of the first base 10 and the top surface of the shaft cover 120 may not be in contact with each other to form the second gap 102 .

[0077] In some embodiments, please refer to Figures 7 and 8. Figure 8 is a structural schematic diagram of the rotating mechanism 230 shown in Figure 5 from another perspective. The first base 10 can be detachably connected to the support plate 110 through a first fastener 130. Specifically, there can be two first fasteners 130, and the two first fasteners 130 respectively connect the first base 10 to the support plate 110 on two opposite sides along the X-axis direction. The first fastener 130 can be a screw or a bolt, etc. The first fastener 130 can include a nut and a screw, and the nut is fixed to the end of the screw. The above-mentioned second interval 102 can be used to accommodate the nut of the first fastener 130 to prevent the nut of the first fastener 130 from pressing against the shaft cover 120, thereby avoiding damage to the shaft cover 120 by the nut.

[0078] The second base 20 can be removably connected to the support plate 110 via a second fastener 140, which can be a bolt or screw. The number of second fasteners 140 can be three, two of which are disposed on the side of the second base 20 away from the first base 10. These two second bases 20 pass through the second base 20 and are fixed to the support plate 110, so that the side of the second base 20 away from the first base 10 is removably connected to the support plate 110; another second fastener 140 connects the side of the second base 20 facing the first base 10 to the support plate 110. The positions of the second fasteners 140 on the side of the second base 20 away from the first base 10 in Figures 7 and 8 are merely exemplary. In practice, the positions of the second fasteners 140 can be designed according to actual needs.

[0079] The support plate 110 can be removably connected to the shaft cover 120 via a third fastener 150, which can be a bolt or screw. Specifically, the support plate 110 is removably connected to the shaft cover 120 via the third fastener 150. The third fastener 150 sequentially passes through the support plate 110, the support base 100, and the shaft cover 120, thereby removably connecting the support plate 110 and the shaft cover 120. The positions of the third fastener 150 shown in Figures 7 and 8 are merely exemplary; in practice, the position of the third fastener 150 can be designed according to actual needs.

[0080] The assembly sequence of the first base 10, the second base 20, the support plate 110 and the shaft cover 120 is as follows: first, fix the two second bases 20 to the support plate 110 through the second fasteners 140, then fix the first base 10 to the support plate 110 through the first fasteners 130, and finally fix the support plate 110 to the shaft cover 120 through the third fasteners 150.

[0081] The following describes a specific implementation method of connecting the first base 10 to the support plate 110 via the first fastener 130:

[0082] In some embodiments, please refer to Figures 9 and 10. Figure 9 is a split schematic diagram of a partial structure of the rotating mechanism 230 in Figure 6. Figure 10 is a split schematic diagram of the partial structure of the rotating mechanism 230 shown in Figure 9 from another perspective. The support plate 110 is a rectangular plate. The top surface of the support plate 110 is used to support the third display portion of the flexible display screen 300. The support plate 110 is provided with a first matching hole 112. The first matching hole 112 can be a threaded hole. Specifically, a first extension member 111 is protruding from the bottom surface of the support plate 110. The axial direction of the first extension member 111 is parallel to the Z-axis direction, and one end of the first extension member 111 is fixed to the bottom surface of the support plate 110, and the other end of the first extension member 111 extends in a direction away from the bottom surface of the support plate 110. The first matching hole 112 is provided on the first extension member 111. Specifically, the first matching hole 112 may be recessed at one end of the first extending member 111 away from the bottom surface of the support plate 110 , or the first matching hole 112 may penetrate the first extending member 111 along the Z-axis direction.

[0083] The first base 10 is generally rectangular in shape. A first connecting member 11 is fixed to both the front and rear surfaces of the first base 10. The first connecting member 11 is provided with a first connecting hole 12, which extends through the first connecting member 11 along the Z-axis. In other words, the first connecting hole 12 extends through both the top and bottom surfaces of the first connecting member 11, with the top surface of the first connecting member 11 facing the first interval and the bottom surface of the first connecting member 11 facing the second interval. The first connecting hole 12 may be a threaded hole.

[0084] Please also refer to Figure 11, which is a schematic cross-sectional view of the rotating mechanism 230 shown in Figure 5. When the first base 10 and the support plate 110 are connected by the first fastener 130, the first base 10 and the support plate 110 are stacked along the Z-axis direction, and the first connecting hole 12 and the first matching hole 112 are coaxial. Then, the screw of the first fastener 130 is extended from the bottom surface of the first connecting member 11 into the first connecting hole 12, and the screw of the first fastener 130 is then inserted from the first connecting hole 12 into the first matching hole 112. The screw of the first fastener 130 can be threadedly engaged with the first connecting hole 12, and the screw of the first fastener 130 is threadedly connected to the first matching hole 112. The nut of the first fastener 130 can abut against the bottom surface of the first connecting member 11, thereby achieving a detachable connection between the first base 10 and the support plate 110. After the shaft cover 120 is assembled to the rotating mechanism 230, the nut of the first fastener 130 is located within the second gap 102. In other embodiments, the first mating hole 112 can also be configured as a blank hole, with the screw of the first fastener 130 having a clearance fit with the first mating hole 112. Thus, using the first fastener 130 to connect the first base 10 and the support plate 110 is simple in structure and easy to operate.

[0085] By providing the first extension member 111 and locating the first mating hole 112 on the first extension member 111, the depth of the first mating hole 112 along the Z-axis can be increased, thereby increasing the number of mating areas between the first fastener 130 and the first mating hole 112, thereby improving connection stability. Furthermore, since the first extension member 111 is closer to the first connector 11, the length of the screw of the first fastener 130 can be adjusted to match the length of the first extension member 111, without having to be excessively long. This can prevent structural instability caused by an overly long first fastener 130.

[0086] In other embodiments, the first extension piece 111 may not be provided, and the first matching hole 112 may be provided through the top and bottom surfaces of the support plate 110 , or the first matching hole 112 may be recessed in the bottom surface of the support plate 110 .

[0087] In some embodiments, referring to Figures 9 and 11 , a first avoidance groove 13 is recessed in the top surface of the first connecting member 11, and the first connecting hole 12 extends through the bottom surface of the first avoidance groove 13 and the bottom surface of the first connecting member 11. The first avoidance groove 13 is coaxial with the first connecting hole 12. A portion of the first extension member 111 extends into the first avoidance groove 13. On the one hand, the first avoidance groove 13 can provide space for the first extension member 111, allowing the first extension member 111 to be set longer, thereby further increasing the depth of the first matching hole 112 and increasing the length of the matching portion between the first extension member 111 and the screw of the first fastener 130. In other embodiments, the first extension member 111 can also directly contact the bottom surface of the first avoidance groove 13. In other embodiments, the first avoidance groove 13 may not be provided, and in this case, a gap can be provided between the first extension member 111 and the top surface of the first connecting member 11.

[0088] Those skilled in the art will understand that if the first base 10 has a support point at each of the opposite ends along the length direction, and the line connecting the two support points is parallel to the central axis of the first base 10 along the Y-axis direction, it is easy to cause the first base 10 to rotate around the central axis in the Y-axis direction.

[0089] In order to solve the above problems, in some embodiments, the two first connecting members 11 at both ends of the first base 10 are staggered along the X-axis direction, and therefore the two first fasteners 130 connecting the first base 10 and the support plate 110 are also staggered along the X-axis direction. Specifically, the two first fasteners 130 are located at two diagonal positions of the first base 10, and the two first fasteners 130 constitute two support points of the first base 10. The line connecting the two support points intersects with the central axis of the first base 10 along the Y-axis direction, which can prevent the first base 10 from shaking around its central axis in the Y-axis direction, thereby increasing the stability of the first base 10.

[0090] In some embodiments, please continue to refer to Figures 9, 10 and 11. The two second bases 20 are each provided with a second connecting member 21 on one end facing the first base 10. The side of the second base 20 facing the first base 10 is detachably fixed by the second connecting member 21 and a second fastener 140. A second extension member 113 may also be provided on the bottom surface of the support plate 110. The structure of the second extension member 113 and the matching relationship with other parts refer to the first extension member 111. The second connecting member 21 is provided with a second connecting hole 22, and the second extension member 113 is provided with a second matching hole 114. A second avoidance groove 23 is recessed on the top surface of the second connecting member 21. The way in which the second base 20 is detachably fixed by the second connecting member 21 and another second fastener 140 can refer to the way in which the first base 10 is detachably fixed by the first connecting member 11 and the first fastener 130. The structures and functions of the second connecting hole 22 , the second matching hole 114 and the second avoidance groove 23 may refer to the first connecting hole 12 , the first matching hole 112 and the first avoidance groove 13 , and are not described in detail herein.

[0091] In some embodiments, referring to Figures 9 and 10 , the first connector 11 and the second connector 21 are arranged along the X-axis, and a first support portion 14 is provided on the side of the first connector 11 facing the second connector 21. Along the Z-axis, the thickness of the first support portion 14 is less than the thickness of the first connector 11. The first support portion 14 and the first connector 11 are arranged in a stepped manner. The top surface of the first support portion 14 and the top surface of the first connector 11 have a height difference, and the bottom surface of the first support portion 14 and the bottom surface of the first connector 11 are flush or have a height difference.

[0092] A second support portion 24 is provided on the side of the second connecting member 21 facing the first connecting member 11. Along the Z-axis, the thickness of the second connecting member 21 is substantially the same as that of the first connecting member 11, while the thickness of the second support portion 24 is less than that of the second connecting member 21. The second support portion 24 and the second connecting member 21 are arranged in a stepped manner. The top surface of the second support portion 24 is flush with or has a height difference with the top surface of the second connecting member 21, and the bottom surface of the second support portion 24 has a height difference with the bottom surface of the second connecting member 21.

[0093] Please refer to Figure 12, which is a schematic cross-sectional view of a portion of the rotating mechanism 230 shown in Figure 5. Along the Z-axis, the first support portion 14 and the second support portion 24 are stacked and in contact, with the first support portion 14 located on the side of the second support portion 24 facing away from the support plate 110. Specifically, the top surface of the first support portion 14 and the bottom surface of the second support portion 24 are in contact. Furthermore, the combined thickness of the first support portion 14 and the second support portion 24 is substantially the same as that of the first connector 11, which in turn has the same thickness as the first connector 11. Therefore, after the first support portion 14 and the second support portion 24 are stacked, the top surface of the first connector 11 is substantially flush with the top surface of the second connector 21, and the bottom surface of the first connector 11 is substantially flush with the bottom surface of the second connector 21. Portions of the side surfaces of the first connector 11 and the second connector 21 may be in direct contact, thereby enhancing the stability of the first base 10. It can be understood that the side surface of the first connecting member 11 is the surface between the top surface and the bottom surface of the first connecting member 11, and the side surface of the second connecting member 21 is the surface between the top surface and the bottom surface of the second connecting member 21.

[0094] As can be seen from the above, both ends of the first base 10 are provided with a first connecting member 11, and both first connecting members 11 are provided with a first support portion 14. Both second bases 20 are provided with a second connecting member 21, and both second connecting members 21 are provided with a second support portion 24. During the assembly of the rotating mechanism 230, after the second bases 20 are placed on the support plate 110, the first base 10 is placed between the two second bases 20, so that the two first support portions 14 are respectively stacked and contact the two second support portions 24, which can support the first base 10 and facilitate the assembly of the first fastener 130.

[0095] In addition, the two first support parts 14 are stacked and in contact with the two second support parts 24 respectively. The two first support parts 14 are offset along the X-axis direction, and correspondingly, the two first support parts 14 are also offset along the X-axis direction. The two first support parts 14 constitute two supported points of the first base 10, where the supported point refers to the center point of the portion where the first support part 14 and the second support part 24 are stacked. The line connecting the two supported points intersects with the center axis of the first base 10 along the Y-axis direction. Therefore, before assembling the first fastener 130, the first support part 14 and the second support part 24 are stacked and in contact, which can prevent the first base 10 from rotating around its center axis in the Y-axis direction, thereby increasing the stability of the first base 10 and reducing the difficulty of assembling the rotating mechanism 230. After the first fastener 130 is assembled, the first support part 14 and the second support part 24 remain in a stacked state to maintain the stability of the first base 10.

[0096] In addition, the two first support parts 14 are respectively stacked and in contact with the two second support parts 24, which can also increase the stability of the second base 20. Specifically, before the first support part 14 and the second support part 24 are stacked, the second base 20 is fixed to the support plate 110 by three second fasteners 140, that is, the second base 20 has three support points. After the first support part 14 and the second support part 24 are stacked, the second base 20 has four support points, and the four support points are basically distributed in a trapezoidal shape. Compared with three supports, the second base 20 is more stable, reducing the risk of the second base 20 shaking around its center axis in the Y-axis direction.

[0097] In some embodiments, referring to Figures 9, 10, and 12 simultaneously, a support column 160 is provided between the support plate 110 and the first connecting member 11, with opposite ends of the support column 160 being fixed to the support plate 110 and the first connecting member 11, respectively; the support column 160 and the first supporting portion 14 are respectively located on either side of the first connecting hole 12 along the width direction of the first supporting portion 14. In one specific embodiment, one end of the support column 160 is fixed to the bottom surface of the support plate 110, and the other end of the support column 160 abuts against the top surface of the first connecting member 11, that is, the support column 160 is protruded from the bottom surface of the support plate 110. In another specific embodiment, one end of the support column 160 is fixed to the top surface of the first connecting member 11, and the other end of the support column 160 abuts against the top surface of the support plate 110, that is, the support column 160 is protruded from the top surface of the first connecting member 11. In another embodiment, the support column 160 includes a first support section and a second support section, the first support section is protruded from the bottom surface of the support plate 110, and the second support section is protruded from the top surface of the first connecting member 11, and the end of the first support section facing away from the bottom surface of the support plate 110 abuts against the end of the second support section facing away from the top surface of the first connecting member 11.

[0098] Therefore, before assembling the first fastener 130, the first base 10 has a first support portion 14 and a support column 160 to form multiple supported points. The support point formed by the support column 160 refers to the center point of the contact portion between the first base 10 and the support column 160. In addition, the first support portion 14 and the support column 160 are arranged at intervals along the X-axis direction. At this time, the number of supported points of the first base 10 increases, which can further reduce the risk of the first base 10 rotating around its center axis in the Y-axis direction. It can also be understood that before the first fastener 130 is assembled, the first support portion 14 and the support column 160 pre-position the first base 10. After the first fastener 130 is assembled, the support column 160 and the first support portion 14 can continue to prevent the first base 10 from rotating around its center axis in the Y-axis direction, thereby improving the structural strength of the rotating mechanism 230.

[0099] In some embodiments, each first connector 11 corresponds to two support columns 160 , with the two support columns 160 spaced apart along the Y-axis, and the line connecting the center axes of the two support columns 160 along the Y-axis is parallel to the Y-axis. Thus, each first connector 11 has a first support portion 14 and two support columns 160 , for a total of three supported points. The lines connecting the three supported points form a triangle, thereby stably supporting both ends of the first base 10 and further reducing the risk of the first base 10 rotating about its center axis along the Y-axis.

[0100] As can be seen above, before assembly of the first fasteners 130, each first connector 11 and support plate 110 has three supported points: one first support portion 14 and two support columns 160. It can be understood that these three supported points pre-position the first base 10 before assembly of the first fasteners 130. Furthermore, along the X-axis, a gap exists between the first extension member 111 located between the first support portion 14 and the support columns 160 and the bottom surface of the first avoidance groove 13. Furthermore, a gap K also exists between the first extension member 111 and the bottom surface of the first avoidance groove 13.

[0101] It is understood that if the first extension member 111 and the bottom surface of the first avoidance groove 13 contact each other to form another supported point, then each first connecting member 11 will have three supported points arranged in sequence along the X-axis direction, namely the first supporting portion 14, the first extension member 111, and the support column 160. If any of the three supported points is not on the same plane as the other two supported points, it will cause the first base 10 to wobble. It is difficult to control the three supported points to be located on the same plane. Therefore, if the first extension member 111 is set to contact the bottom surface of the first avoidance groove 13, the risk of the first base 10 shaking around its central axis in the Y-axis direction will increase.

[0102] In this embodiment, a gap is provided between the first extension member 111 and the bottom surface of the first avoidance groove 13, so that each first connecting member 11 has two supported points arranged in sequence along the X-axis direction. The difficulty of controlling the two supported points to be located in the same plane is significantly lower than the difficulty of controlling the three supported points to be located in the same plane, thereby reducing the risk of the first base 10 shaking around its central axis along the Y-axis direction.

[0103] In some embodiments, please refer to Figures 13 and 14. Figure 13 is a schematic diagram of another portion of the structure of the rotating mechanism 230 shown in Figure 5, and Figure 14 is a schematic diagram of a partial structure of the rotating mechanism 230 shown in Figure 5. The first base 10 is provided with a first positioning portion 15, and the second base 20 is provided with a second positioning portion 25. The first positioning portion 15 and the second positioning portion 25 abut against each other to pre-position the first base 10 before the first fastener 130 is assembled. This ensures that the first connecting hole 12 and the first mating hole 112 are coaxial, thereby facilitating the installation of the first fastener 130 and improving assembly efficiency and accuracy. After the first fastener 130 is assembled, the first positioning portion 15 and the second positioning portion 25 remain in abutment, which can enhance the stability of the first base 10 and the second base 20.

[0104] In some embodiments, please continue to refer to Figures 13 and 14. The first positioning surface 16 is provided at one end of the first connecting member 11 facing the second base 20, and the first mating surface 26 is provided at one end of the second base 20 facing the first connecting member 11. The first positioning surface 16 and the first mating surface 26 are both parallel to the X-axis direction. Along the Y-axis direction, the first positioning surface 16 and the first mating surface 26 abut. The first positioning portion 15 includes the first positioning surface 16, and the second positioning portion 25 includes the first mating surface 26. Thus, the first positioning surfaces 16 of the two first connecting members 11 abut against the first mating surfaces 26 of the two second bases 20, respectively, limiting the displacement of the first base 10 along the Y-axis direction, thereby preventing the central axis of the first connecting hole 12 and the central axis of the first mating hole 112 from being misaligned along the Y-axis direction, thereby increasing the stability of the first base 10 before assembling the first fastener 130. Of course, after the first fastener 130 is assembled, the first positioning surface 16 and the first mating surface 26 continue to maintain abutment, increasing the stability of the first base 10. At the same time, according to the principle that the action of force is mutual, that is, while the first mating surface 26 applies a holding force to the first positioning surface 16, the first positioning surface 16 also applies a holding force to the first mating surface 26. Therefore, the first positioning surface 16 and the first mating surface 26 are in abutment, which also increases the stability of the second base 20.

[0105] In some embodiments, referring again to Figures 13 and 14 , a second positioning surface 17 is provided on the side of the first connector 11 facing the second connector 21, and a second mating surface 27 is provided on the side of the second connector 21 facing the first connector 11. The second positioning surface 17 and the second mating surface 27 are both parallel to the Y-axis. Along the X-axis, the second positioning surface 17 and the second mating surface 27 abut against each other. The first positioning portion 15 includes the second positioning surface 17, and the second positioning portion 25 includes the second mating surface 27.

[0106] Because the two first connecting members 11 are staggered along the X-axis, the two second connecting members 21 are also staggered along the X-axis. Therefore, one of the second positioning surfaces 17 and the second mating surface 27 are arranged in sequence from the positive direction of the X-axis to the negative direction of the X-axis and abut against each other to limit the movement of the first base 10 in the positive direction of the X-axis. The other second positioning surface 17 and the other second mating surface 27 are arranged in sequence from the negative direction of the X-axis to the positive direction of the X-axis and abut against each other to limit the movement of the first base 10 in the negative direction of the X-axis. Thus, the second positioning surfaces 17 of the two first connecting members 11 abut against the two second mating surfaces 27 of the two second connecting members 21, respectively, to limit the movement of the first base 10 in the X-axis direction, thereby preventing the center axis of the first connecting hole 12 and the center axis of the first mating hole 112 from being misaligned along the Y-axis, thereby increasing the stability of the first base 10 before assembling the first fastener 130. In addition, after the first fastener 130 is assembled, the second mating surface 27 and the second positioning surface 17 abut against each other, which can continuously keep the first base 10 stable. At the same time, it can also increase the stability of the second base 20. The principle of the second mating surface 27 and the second positioning surface 17 abutting against each other to increase the stability of the second base 20 refers to the principle of the first mating surface 26 abutting against the first positioning surface 16 to increase the stability of the second base 20.

[0107] Furthermore, if the first positioning surface 16 and the first mating surface 26 are not in contact, and the second positioning surface 17 and the second mating surface 27 are also not in contact, the first base 10 may still rotate about its central axis in the Z-axis direction. However, by providing abutment between the two first positioning surfaces 16 and the two first mating surfaces 26, and / or abutment between the two second positioning surfaces 17 and the two second mating surfaces 27, the first base 10 can be restricted from rotating about its central axis in the Z-axis direction.

[0108] In some embodiments, referring again to Figures 13 and 14 , a third positioning surface 18 is defined on the end of the first base 10 facing the second connector 21, and a third mating surface 28 is defined on the end of the second connector 21 facing the first base 10. Both the third positioning surface 18 and the third mating surface 28 are parallel to the X-axis. Along the Y-axis, the third positioning surface 18 and the third mating surface 28 abut against each other. The first positioning portion 15 includes the third positioning surface 18, and the second positioning portion 25 includes the third mating surface 28.

[0109] Thus, before assembling the first fastener 130, the two third positioning surfaces 18 at both ends of the first base 10 respectively abut against the third mating surfaces 28 of the two second connectors 21, thereby further limiting the displacement of the first base 10 along the Y-axis direction and preventing the center axis of the first connecting hole 12 and the center axis of the first mating hole 112 from being misaligned along the Y-axis direction. This further increases the stability of the first base 10 before assembling the first fastener 130. In addition, after the first fastener 130 is assembled, the third mating surface 28 abuts against the third positioning surface 18, which can continuously stabilize the first base 10 and, at the same time, increase the stability of the second base 20. The principle of increasing the stability of the second base 20 by the abutment of the third mating surface 28 and the third positioning surface 18 is similar to the principle of increasing the stability of the second base 20 by the abutment of the first mating surface 26 against the first positioning surface 16.

[0110] Specifically, the first connecting member 11 and the second connecting member 21 have the same length dimension along the Y-axis direction. When the first base 10 and the second base 20 are arranged in sequence along the Y-axis direction, the first connecting member 11 and the second connecting member 21 are arranged along the X-axis direction. At this time, the overall structure of the support base 100 can be made more compact. In addition, the end face of the first connecting member 11 away from the first base 10 can be abutted against the end face of the second base 20 facing the first base 10, the side face of the first connecting member 11 facing the second connecting member 21 can be abutted against the side face of the second connecting member 21 facing the first connecting member 11, and the end face of the second connecting member 21 away from the second base 20 can be abutted against the end face of the first base 10 facing the second base 20. The end face of the first connecting member 11 away from the first base 10 is the first positioning surface 16, and the end face of the second base 20 facing the first base 10 is the first mating surface 26. The side of the first connector 11 facing the second connector 21 is the second positioning surface 17, and the side of the second connector 21 facing the first connector 11 is the second mating surface 27. The end surface of the first base 10 facing the second base 20 is the third positioning surface 18, and the end surface of the second connector 21 away from the second base 20 is the third mating surface 28.

[0111] In some embodiments, referring again to Figures 9, 10, and 11, the first connector 11 is provided with a positioning hole 19, and a positioning post 115 is provided on the side of the support plate 110 facing the first connector 11. A portion of the positioning post 115 extends into the positioning hole 19. The first positioning portion 15 includes the positioning hole 19, and the second positioning portion 25 includes the positioning post 115. This further constrains the first base 10 about its central axis along the Z-axis, thereby further increasing the stability of the first base 10 before assembly with the first fastener 130. Specifically, the first connector 11 extends a triangular extension toward the second connector 21. Accordingly, the second connector 21 forms a triangular escape space toward the first connector 11. The extension of the first connector 11 is located within the escape space of the second connector 21, increasing the volume of the first connector 11. This, in turn, provides sufficient space for the positioning hole 19 in the first connector 11, and further enhances the compactness of the structures of the first and second connectors 11 and 21.

[0112] In other embodiments, the support plate 110 is provided with a positioning hole 19 , and the first connecting member 11 is provided with a positioning column 115 on the side facing the support plate 110 . Accordingly, the first positioning portion 15 includes the positioning column 115 , and the second positioning portion 25 includes the positioning hole 19 .

[0113] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A foldable electronic device, characterized in that: include: a first body, a second body, a rotating mechanism, and a flexible circuit board; The rotating mechanism is connected between the first body and the second body, and the rotating mechanism can make the first body and the second body relatively unfold or fold; the flexible circuit board is provided on the first body, the rotating mechanism and the second body, so as to electrically connect the first body and the second body; The rotating mechanism includes a support seat and a support plate, and the support seat and the support plate are stacked along the thickness direction of the foldable electronic device; the support seat includes a first base and a second base, and the first base and the second base are arranged along the length direction of the support plate. The first base and the second base are separately arranged, and the first base is detachably fixed to the support plate. There is a first gap between the first base and the support plate, and a part of the flexible circuit board is located in the first gap; the second base is fixed to the support plate.

2. The foldable electronic device according to claim 1, wherein: A first connecting member is provided on one end of the first base facing the second base; the first connecting member is provided with a first connecting hole, which passes through the first connecting member along the thickness direction of the first connecting member; a first matching hole is provided on the side of the support plate facing the first base, and the first connecting hole and the first matching hole are coaxial; The foldable electronic device also includes a first fastener, which is arranged in the first connecting hole and the first matching hole, so that the first base can be detachably fixed to the support plate.

3. The foldable electronic device according to claim 2, wherein: A first extension piece is protruded from a surface of the support plate facing the first connecting piece. One end of the first extension piece is fixed to the support plate, and the other end of the first extension piece faces the first connecting piece. The first matching hole is provided in the first extension piece.

4. The foldable electronic device according to claim 3, wherein: The first base is provided with the first connecting members at both ends along the length direction of the foldable electronic device, and the two first connecting members are staggered in the width direction of the foldable electronic device.

5. The foldable electronic device according to claim 4, wherein: There are two second bases, and along the length direction of the foldable electronic device, the first base is located between the two second bases; the two second bases are each provided with a second connecting member at one end facing the first base; The first connecting member and the second connecting member are arranged along the width direction of the foldable electronic device, and the first connecting member is provided with a first supporting portion on the side facing the second connecting member, and the second connecting member is provided with a second supporting portion on the side facing the first connecting member; along the thickness direction, the first supporting portion and the second supporting portion are stacked and in contact, and the first supporting portion is located on the side of the second supporting portion facing away from the support plate.

6. The foldable electronic device according to claim 5, characterized in that: A support column is provided between the support plate and the first connecting member, and the opposite ends of the support column are respectively fixed to the support plate and the first connecting member; the support column and the first supporting part are respectively located on both sides of the first connecting hole along the width direction of the first supporting part.

7. The foldable electronic device according to claim 6, wherein: Along the thickness direction of the foldable electronic device, there is a gap between the first extending member and the first connecting member.

8. The foldable electronic device according to claim 6, wherein: A first avoidance groove is formed on a surface of the first connecting member facing the support plate. The first avoidance groove and the first matching hole are opposite to each other along the thickness direction of the foldable electronic device. The first connecting hole passes through the bottom surface of the first avoidance groove and the side surface of the first connecting member facing away from the support plate. One end of the first extending member extending toward the first connecting member extends into the first avoiding groove, and a gap is formed between the first extending member and the bottom surface of the first avoiding groove.

9. The foldable electronic device according to claim 5, wherein: The first base is provided with a first positioning portion, and the second base is provided with a second positioning portion. The first positioning portion and the second positioning portion abut against each other to pre-position the first base before the first fastener is assembled.

10. The foldable electronic device according to claim 9, wherein: The first connector has a first positioning surface at one end facing the second base, and the second base has a first mating surface at one end facing the first connector. The first positioning surface and the first mating surface are both parallel to the width direction of the foldable electronic device. The first positioning surface and the first mating surface abut against each other along the length direction of the foldable electronic device. The first positioning portion includes the first positioning surface, and the second positioning portion includes the first matching surface.

11. The foldable electronic device according to claim 9, wherein: The first connector has a second positioning surface on a side facing the second connector, and the second connector has a second mating surface on a side facing the first connector. The second positioning surface and the second mating surface are both parallel to the length direction of the foldable electronic device. The second positioning surface and the second mating surface abut against each other along the width direction of the foldable electronic device. The first positioning portion includes the second positioning surface, and the second positioning portion includes the second mating surface.

12. The foldable electronic device according to claim 9, wherein: A third positioning surface is provided on one end of the first base facing the second connector, and a third mating surface is provided on one end of the second connector facing the first base. Both the third positioning surface and the third mating surface are parallel to the width direction of the foldable electronic device; along the length direction of the foldable electronic device, the third positioning surface and the third mating surface abut against each other. The first positioning portion includes the third positioning surface, and the second positioning portion includes the third matching surface.

13. The foldable electronic device according to claim 9, wherein: The first connecting member is provided with a positioning hole, the support plate is provided with a positioning post on a side facing the first connecting member, the first positioning portion includes the positioning hole, and the second positioning portion includes the positioning post; Alternatively, the support plate is provided with a positioning hole, and the first connecting member is provided with a positioning column on a side facing the support plate; the first positioning portion includes the positioning column, and the second positioning portion includes the positioning hole; A portion of the positioning post extends into the positioning hole.

14. The foldable electronic device according to any one of claims 1 to 13, characterized in that: The foldable electronic device further includes a second fastener, and the second base is detachably connected to the support plate via the second fastener.

15. The foldable electronic device according to any one of claims 2 to 13, characterized in that: The foldable electronic device also includes a shaft cover, which is arranged on a side of the support base facing away from the support plate; the foldable electronic device also includes a third fastener, and the support plate is detachably connected to the shaft cover via the third fastener.

16. The foldable electronic device according to claim 15, wherein: Along the thickness direction of the foldable electronic device, there is a second gap between the shaft cover and the first base; the second gap is used to avoid the first fastener.

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