Foldable electronic device

Abstract

The invention relates to foldable electronic equipment, the foldable electronic equipment comprises a rotating shaft, a shell assembly and a flexible circuit board, the shell assembly comprises a first shell and a second shell, and the first shell and the second shell are rotationally connected to the two sides of the rotating shaft respectively; wherein the first shell is provided with a first arc-shaped surface, and in the process of switching from the folding state to the flattening state, the first arc-shaped surface abuts against the bending part so as to guide the bending part to be bent into a preset shape; and / or the second shell is provided with a second arc-shaped surface, and the second arc-shaped surface abuts against the bending part in the process of switching from the folding state to the flattening state so as to guide the bending part to be bent into a preset shape. According to the foldable electronic equipment, the risk of fracture failure of the flexible circuit board can be reduced, and the service life of the foldable electronic equipment is prolonged.

Description

Technical Field

[0001] The present disclosure relates to the technical field of electronic devices, and in particular to a foldable electronic device. Background Art

[0002] Foldable electronic devices have attracted widespread attention and favor from consumers because they can provide a large display area when in use and can be folded for easy storage when stored. Foldable electronic devices include a rotating shaft and a shell provided on both sides of the rotating shaft, and folding or unfolding is achieved by rotating the shell relative to the rotating shaft. Electronic components are provided inside the shell, and the electronic components in the two shells are electrically connected through a flexible circuit board passing through the rotating shaft. The flexible circuit board usually includes a fixed portion and a bending portion, and the fixed portion is connected to the shell to achieve the installation and fixation of the flexible circuit board; the bending portion is provided in the space surrounded by the rotating shaft and the shell, and the bending portion enables the flexible circuit board to have sufficient redundant length to meet the bending requirements. During the use of foldable electronic devices, the bending portion of the flexible circuit board has the problem of large local stress, which makes the flexible circuit board prone to breakage and failure, affecting the service life of the foldable electronic device. Summary of the invention

[0003] The present disclosure aims to solve one of the technical problems in the related art at least to some extent.

[0004] To this end, an embodiment of the present disclosure proposes a foldable electronic device to reduce the risk of fracture and failure of the flexible circuit board and extend the service life of the foldable electronic device.

[0005] The foldable electronic device of the disclosed embodiment includes a rotating shaft, a shell assembly and a flexible circuit board, wherein the shell assembly includes a first shell and a second shell, wherein the first shell and the second shell are respectively rotatably connected to the two sides of the rotating shaft so that the foldable electronic device can switch between a flattened state and a folded state; the flexible circuit board includes a bendable bending portion; wherein the first shell has a first arcuate surface, and in the process of switching from the folded state to the flattened state, the first arcuate surface stops at the bending portion to guide the bending portion to bend into a preset shape; and / or the second shell has a second arcuate surface, and in the process of switching from the folded state to the flattened state, the second arcuate surface stops at the bending portion to guide the bending portion to bend into a preset shape

[0006] Optionally, the foldable electronic device also includes a first pressing member and / or a second pressing member, the first pressing member is connected to the first shell, the first pressing member has a third curved surface, and in the process of switching from the folded state to the flattened state, the third curved surface stops at the bending portion to guide the bending portion to bend into the preset shape; the second pressing member is connected to the second shell, the second pressing member has a fourth curved surface, and in the process of switching from the folded state to the flattened state, the curved surface of the fourth curved surface stops at the bending portion to guide the bending portion to bend into the preset shape.

[0007] Optionally, in the flattened state, the shell assembly has a first surface and a second surface arranged opposite to each other, and one of the first surface and the second surface is used to support the flexible screen; wherein: the bending portion includes a first convex portion, a second convex portion and a third convex portion arranged in sequence, the second convex portion is protruded toward the first surface, the first convex portion and the third convex portion are both protruded away from the first surface, the first curved surface stops at a portion of the first convex portion close to the second convex portion along the direction toward the first surface, and the third curved surface stops at a portion of the third convex portion close to the second convex portion along the direction toward the first surface; and / or, the bending portion includes a fourth convex portion, a fifth convex portion and a sixth convex portion arranged in sequence, the fifth convex portion is protruded toward the first surface, the fourth convex portion and the sixth convex portion are both protruded away from the first surface, the second curved surface stops at a portion of the fourth convex portion close to the fifth convex portion along the direction toward the first surface, and the fourth curved surface stops at a portion of the sixth convex portion close to the fifth convex portion along the direction toward the first surface.

[0008] Optionally, the first shell further has a fifth curved surface, and during the switching process between the flattened state and the folded state, the portion of the third protrusion close to the second protrusion is clamped between the third curved surface and the fifth curved surface; and / or, the second shell further has a sixth curved surface, and during the switching process between the flattened state and the folded state, the portion of the sixth protrusion close to the fifth protrusion is clamped between the fourth curved surface and the sixth curved surface.

[0009] Optionally, at least one of the third arc-shaped surface and the fifth arc-shaped surface is a convex arc-shaped surface protruding toward the bending portion; and / or, at least one of the fourth arc-shaped surface and the sixth arc-shaped surface is a convex arc-shaped surface protruding toward the bending portion.

[0010] Optionally, the radius of curvature of the first curved surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the third curved surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the fifth curved surface is greater than or equal to 1 mm; and / or the radius of curvature of the second curved surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the fourth curved surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the sixth curved surface is greater than or equal to 1 mm.

[0011] Optionally, the first arc-shaped surface is a convex arc-shaped surface protruding toward the bending portion; and / or the second arc-shaped surface is a convex arc-shaped surface protruding toward the bending portion.

[0012] Optionally, in the flattened state, a ratio of a radius of curvature at any point in the bending portion to a thickness of the bending portion is greater than or equal to 5.

[0013] Optionally, the first shell has a first through-hole for the bending portion to pass through, a portion of the first clamping member is arranged outside the first through-hole and connected to the first shell, another portion of the first clamping member is arranged in the first through-hole and adapted to the first through-hole, and the third curved surface is arranged at the portion of the first clamping member located in the first through-hole; the second shell has a second through-hole for the bending portion to pass through, a portion of the second clamping member is arranged outside the second through-hole and connected to the second shell, another portion of the second clamping member is arranged in the second through-hole and adapted to the second through-hole, and the fourth curved surface is arranged at the portion of the second clamping member located in the second through-hole.

[0014] Optionally, the first clamping member includes a first rigid portion and a first elastic portion connected to each other, the first rigid portion is connected to the first shell, and the first elastic portion is interference fit with the hole wall of the first perforation; and / or, the second clamping member includes a second rigid portion and a second elastic portion connected to each other, the second rigid portion is connected to the second shell, and the second elastic portion is interference fit with the hole wall of the second perforation.

[0015] Optionally, the third arcuate surface is provided on the first elastic portion; and / or the fourth arcuate surface is provided on the second elastic portion.

[0016] Optionally, the first elastic part includes a first main body and a first limiting rib, the first main body is connected to the first rigid part, the first limiting rib is arranged around the first main body, and the first limiting rib has an interference fit with the hole wall of the first through hole; and / or, the second elastic part includes a second main body and a second limiting rib, the second main body is connected to the second rigid part, the second limiting rib is arranged around the second main body, and the second limiting rib has an interference fit with the hole wall of the second through hole.

[0017] Optionally, the first rigid part includes a first connecting part and a first supporting part, the first connecting part is connected to the first shell, at least a portion of the first supporting part extends into the first through-hole, and at least a portion of the first supporting part is embedded in the first elastic part; and / or, the second rigid part includes a second connecting part and a second supporting part, the second connecting part is connected to the second shell, at least a portion of the second supporting part extends into the second through-hole, and at least a portion of the second supporting part is embedded in the second elastic part.

[0018] Optionally, the first through-hole is a long strip hole, the first shell is provided with a plurality of first positioning portions, the plurality of first positioning portions are arranged at intervals along the length direction of the first through-hole, the first clamping member is provided with a plurality of second positioning portions, the second positioning portions correspond one-to-one to the first positioning portions, and each second positioning portion is positioned and matched with the corresponding first positioning portion; and / or, the second through-hole is a long strip hole, the second shell is provided with a plurality of third positioning portions, the plurality of third positioning portions are arranged at intervals along the length direction of the second through-hole, the second clamping member is provided with a plurality of fourth positioning portions, the fourth positioning portions correspond one-to-one to the third positioning portions, and each fourth positioning portion is positioned and matched with the corresponding third positioning portion.

[0019] Optionally, the first positioning portion is a first positioning column, which is cylindrical, and the second positioning portion is a first positioning hole, a portion of which is a circular hole, and another portion of which is an elongated hole; and / or, the third positioning portion is a second positioning column, which is cylindrical, and the fourth positioning portion is a second positioning hole, a portion of which is a circular hole, and another portion of which is an elongated hole.

[0020] Optionally, the first pressing member is detachably connected to the first shell; and / or the second pressing member is detachably connected to the second shell.

[0021] Optionally, the first through-hole is an elongated hole, the first shell includes a first part and a second part arranged relatively to each other along the width direction of the first through-hole, a part of the first clamping member is connected to the first part, and a first stopping part is provided on a side of the second part away from the bending part, and the first stopping part is used to stop the first clamping member; and / or, the second through-hole is an elongated hole, the second shell includes a third part and a fourth part arranged relatively to each other along the width direction of the second through-hole, a part of the second clamping member is connected to the third part, and a second stopping part is provided on a side of the fourth part away from the bending part, and the second stopping part is used to stop the second clamping member.

[0022] The foldable electronic device of the embodiment of the present disclosure includes a rotating shaft, a housing assembly and a flexible circuit board, wherein the housing assembly includes a first housing and a second housing, wherein the first housing and the second housing are respectively rotatably connected to the two sides of the rotating shaft so that the foldable electronic device can switch between a flattened state and a folded state; the flexible circuit board includes a multi-layer circuit board body arranged in layers; wherein the first housing has a first mounting portion, the flexible circuit board includes a first fixed portion and a bendable bending portion arranged in sequence, the first fixed portion is connected to the first mounting portion, the first fixed portion includes a first adhesive portion and a first non-adhesive portion, two adjacent layers of the circuit board body are bonded at the first adhesive portion, and the two adjacent layers of the circuit board body can move relative to each other at the first non-adhesive portion; and / or the second housing has a second mounting portion, the flexible circuit board includes a bendable bending portion and a second fixed portion arranged in sequence, the second fixed portion is connected to the second mounting portion, the second fixed portion includes a second adhesive portion and a second non-adhesive portion, the two adjacent layers of the circuit board body are bonded at the second adhesive portion, and the two adjacent layers of the circuit board body can move relative to each other at the second non-adhesive portion.

[0023] Optionally, the first adhesive portion is connected to the first mounting portion, and the first non-adhesive portion and the first mounting portion can move relative to each other; and / or the second adhesive portion is connected to the second mounting portion, and the second non-adhesive portion and the second mounting portion can move relative to each other.

[0024] Optionally, the foldable electronic device further comprises a first fixing frame and / or a second fixing frame, the first fixing frame is connected to the first fixing portion, the first fixing frame comprises a third adhesive portion and a third non-adhesive portion, the third adhesive portion is arranged corresponding to the first adhesive portion and is bonded to the first adhesive portion, the third non-adhesive portion is arranged corresponding to the first non-adhesive portion and can move relative to the first non-adhesive portion; the second fixing frame is connected to the second fixing portion, the second fixing frame comprises a fourth adhesive portion and a fourth non-adhesive portion, the fourth adhesive portion is arranged corresponding to the second adhesive portion and is bonded to the second adhesive portion, the fourth non-adhesive portion is arranged corresponding to the second non-adhesive portion and can move relative to the second non-adhesive portion

[0025] Optionally, the first fixing portion is in the shape of an elongated strip, and the first adhesive portion is arranged on both sides of the first non-adhesive portion in the length direction of the first fixing portion; and / or, the second fixing portion is in the shape of an elongated strip, and the second adhesive portion is arranged on both sides of the second non-adhesive portion in the length direction of the second fixing portion.

[0026] Optionally, the first fixing portion includes a first protrusion protruding from the bending portion in its length direction, and the first protrusion forms the first bonding portion; and / or the second fixing portion includes a second protrusion protruding from the bending portion in its length direction, and the second protrusion forms the second bonding portion.

[0027] Optionally, the width of the third adhesive portion is greater than the width of the third non-adhesive portion; and / or the width of the fourth adhesive portion is greater than the width of the fourth non-adhesive portion.

[0028] Optionally, the third non-adhesive portion is disposed toward a side of the third adhesive portion away from the bending portion; and / or the fourth non-adhesive portion is disposed toward a side of the fourth adhesive portion away from the bending portion.

[0029] Optionally, the first fixing frame is U-shaped, and / or the second fixing frame is U-shaped.

[0030] Optionally, the flexible circuit board also includes an electrical connection portion for connecting to a printed circuit board, and the electrical connection portion and one of the third bonding portions are arranged on the same side of the third non-bonding portion in the length direction of the first fixed portion; in the length direction of the first fixed portion, the size of the third bonding portion arranged adjacent to the electrical connection portion is larger than the size of the third bonding portion arranged away from the electrical connection portion.

[0031] Optionally, the first mounting portion has a plurality of first limiting portions, the third adhesive portion has a second limiting portion, the second limiting portions correspond one-to-one to the first limiting portions, and each second limiting portion is positioned and matched with the corresponding first limiting portion; and / or, the second mounting portion has a plurality of third limiting portions, the fourth adhesive portion has a fourth limiting portion, the fourth limiting portion corresponds one-to-one to the third limiting portions, and each fourth limiting portion is positioned and matched with the corresponding third limiting portion.

[0032] Optionally, the first limiting portion is a limiting column, and the second limiting portion is a limiting groove or a limiting hole; and / or, the third limiting portion is a limiting column, and the fourth limiting portion is a limiting groove or a limiting hole.

[0033] The foldable electronic device of the disclosed embodiment is provided with a first curved surface on the first housing. In the process of switching from the folded state to the flattened state, the first curved surface is used to stop against the bending portion, so as to guide the bending portion to bend into a preset shape, and the first curved surface is also made to be in surface contact with the bending portion, and when the first curved surface stops against the bending portion, the portion of the bending portion in contact with the first curved surface is consistent with the shape of the first curved surface, so that the bending radius of the portion of the bending portion in contact with the first curved surface is controllable. The second curved surface is provided on the second housing. In the process of switching from the folded state to the flattened state, the second curved surface is used to stop against the bending portion, so as to guide the bending portion to bend into a preset shape, and the second curved surface is also made to be in surface contact with the bending portion, and when the second curved surface stops against the bending portion, the portion of the bending portion in contact with the second curved surface is consistent with the shape of the second curved surface, so that the bending radius of the portion of the bending portion in contact with the second curved surface is controllable. By reasonably designing the first curved surface and the second curved surface, the bending radius of the bending portion can be made larger, thereby alleviating the problem of large local stress in the flexible circuit board, reducing the risk of fracture and failure of the flexible circuit board, and extending the service life of the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the internal structure of an electronic device from one perspective of an embodiment of the present disclosure.

[0035] Figure 2 It is a schematic diagram of the internal structure of an electronic device from another perspective of an embodiment of the present disclosure.

[0036] Figure 3 is a cross-sectional view of a front view of an electronic device according to an embodiment of the present disclosure.

[0037] Figure 4 yes Figure 3 Schematic diagram of the structure located on one side of the rotating shaft.

[0038] Figure 5 yes Figure 3 Schematic diagram of the structure located on the other side of the shaft.

[0039] Figure 6 FIG. 1 is a top view of an electronic device according to an embodiment of the present disclosure (some components are not shown).

[0040] Figure 7 yes Figure 6 The schematic diagram of the structure of the first pressing member from one perspective is also a schematic diagram of the structure of the second pressing member from one perspective.

[0041] Figure 8 yes Figure 6 The schematic diagram of the structure of the first pressing member from another perspective is also a schematic diagram of the structure of the second pressing member from another perspective.

[0042] Fig. 9 yes Figure 6 The front view of the first clamping member is also the front view of the second clamping member.

[0043] Fig.10 The figure is a three-dimensional diagram of a flexible circuit board of an electronic device according to an embodiment of the present disclosure.

[0044] Fig.11 FIG. 4 is a top view of a flexible circuit board of an electronic device according to an embodiment of the present disclosure.

[0045] Fig.12 yes Fig.11 A schematic diagram of the structure when the first fixing frame is hidden.

[0046] Fig.13 yes Fig.11 Schematic diagram of the structure of the first fixed frame.

[0047] Fig.14 FIG. 4 is a top view of a flexible circuit board of an electronic device according to another embodiment of the present disclosure.

[0048] Fig.15 yes Fig.14 A schematic structural diagram when the first fixing frame and the second fixing frame are hidden.

[0049] Reference numerals:

[0050] 100. Electronic equipment;

[0051] 1. Rotating shaft;

[0052] 2. Shell assembly; 21. First shell; 211. First mounting portion; 2111. First limiting portion; 212. First arcuate surface; 213. Fifth arcuate surface; 214. First through hole; 2141. First portion; 2142. Second portion; 2143. First stop portion; 215. First positioning portion; 22. Second shell; 221. Second mounting portion; 2211. Third limiting portion; 222. Second arcuate surface; 223. Sixth arcuate surface; 224. Second through hole; 2241. Third portion; 2242. Fourth portion; 2243. Second stop portion; 225. Third positioning portion; 23. First surface; 24. Second surface; 25. Shaft cover;

[0053] 3. Flexible circuit board; 31. First fixing part; 311. First bonding part; 312. First non-bonding part; 32. Bending part; 321. First convex part; 322. Second convex part; 323. Third convex part; 324. Fourth convex part; 325. Fifth convex part; 326. Sixth convex part; 327. Through-shaft part; 33. Second fixing part; 331. Second bonding part; 332. Second non-bonding part; 35. Electrical connection part;

[0054] 4. first pressing member; 41. third arc-shaped surface; 42. second positioning portion; 43. first connecting hole; 401. first rigid portion; 402. first elastic portion; 4021. first main body portion; 4022. first limiting rib;

[0055] 5. second pressing member; 51. fourth arc-shaped surface; 52. fourth positioning portion; 53. second connecting hole; 5021. second main body portion; 5022. second limiting rib; 501. second rigid portion; 502. second elastic portion;

[0056] 61. first screw; 62. second screw;

[0057] 7, first fixing frame; 71, third bonding portion; 711, second limiting portion; 72, third non-bonding portion;

[0058] 8. Second fixing frame; 81. Fourth bonding portion; 811. Fourth limiting portion; 82. Fourth non-bonding portion. DETAILED DESCRIPTION

[0059] In the foldable electronic device in the related art, a stopper is usually provided on the housing and other components, and the stopper is stopped at the bending portion of the flexible circuit board to make the bending portion bend. The stopper is in line contact with the bending portion of the flexible circuit board, and the bending radius of the bending portion cannot be controlled, resulting in a small local bending radius of the bending portion. During the use of the foldable electronic device, that is, during the process of folding or unfolding the foldable electronic device, stress concentration occurs at the small bending radius of the flexible circuit board, resulting in greater stress at the small bending radius, which in turn causes the flexible circuit board to be prone to fracture and failure, affecting the service life of the foldable electronic device.

[0060] The foldable electronic device of the disclosed embodiment has an innovative design for the stop portion that contacts the bending portion of the flexible circuit board. The stop portion cooperates with the bending portion of the flexible circuit board to control the bending radius of the bending portion, thereby preventing the bending radius of the bending portion from being too small. This can alleviate the problem of large local stress in the flexible circuit board during use of the foldable electronic device, reduce the risk of breakage and failure of the flexible circuit board, and extend the service life of the foldable electronic device.

[0061] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0062] Example 1

[0063] like Figures 1 to 9 As shown, the foldable electronic device 100 of the embodiment of the present disclosure includes a rotating shaft 1, a housing assembly 2 and a flexible circuit board 3. The housing assembly 2 includes a first housing 21 and a second housing 22. The first housing 21 and the second housing 22 are respectively connected to the two sides of the rotating shaft 1, so that the foldable electronic device 100 can switch between a flat state and a folded state. The flexible circuit board 3 includes a bendable bending portion 32. The first housing 21 is connected to the rotating shaft 1 in a rotational manner, so that the first housing 21 can rotate relative to the rotating shaft 1; the second housing 22 is connected to the rotating shaft 1 in a rotational manner, so that the second housing 22 can rotate relative to the rotating shaft 1. A part of the flexible screen of the foldable electronic device 100 is connected to the first housing 21, and a part is connected to the second housing 22. When the first housing 21 and the second housing 22 move relative to each other, the flexible screen can be driven to fold, and when the first housing 21 and the second housing 22 move in opposite directions, the flexible screen can be driven to flatten. It should be noted that, in addition to the flattened state and the folded state, the foldable electronic device 100 can also be in an intermediate state between the flattened state and the folded state, and any state between the flattened state and the folded state can be understood as an intermediate state, that is, the intermediate state is not unique.

[0064] In which, the first shell 21 has a first curved surface 212, and in the process of switching from the folded state to the flattened state, the first curved surface 212 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape; and / or, the second shell 22 has a second curved surface 222, and in the process of switching from the folded state to the flattened state, the second curved surface 222 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape. In other words, only the first curved surface 212 is provided on the first shell 21, and when the foldable electronic device 100 is switched from the folded state to the flattened state, the first curved surface 212 is used to stop at the bending portion 32 to guide the bending portion 32 to bend into a preset shape; or, only the second curved surface 222 is provided on the second shell 22, and when the foldable electronic device 100 is switched from the folded state to the flattened state, the second curved surface 222 is used to stop at the bending portion 32 to guide the bending portion 32 to bend into a preset shape; or, the first curved surface 212 is provided on the first shell 21, and the second curved surface 222 is provided on the second shell 22, and when the foldable electronic device 100 is switched from the folded state to the flattened state, the first curved surface 212 and the second curved surface 222 are used to stop at parts of the bending portion 32 respectively to guide the bending portion 32 to bend into a preset shape. The first arc surface 212 is disposed on a side of the first housing 21 close to the flexible circuit board 3 , and the second arc surface 222 is disposed on a side of the second housing 22 close to the flexible circuit board 3 .

[0065] The first arc surface 212 guides the bending portion 32 to bend into a preset shape, which can be understood as: a portion of the bending portion 32 fits with at least a portion of the first arc surface 212, so that the shape of a portion of the bending portion 32 is consistent with the shape of at least a portion of the first arc surface 212, and then the bending portion 32 is bent into a preset shape as a whole. The second arc surface 222 guides the bending portion 32 to bend into a preset shape, which can be understood as: a portion of the bending portion 32 fits with at least a portion of the second arc surface 222, so that the shape of a portion of the bending portion 32 is consistent with the shape of at least a portion of the second arc surface 222, and then the bending portion 32 is bent into a preset shape as a whole. Among them, the preset shape can be understood as: a pre-designed shape, that is, a designed shape.

[0066] The foldable electronic device 100 of the disclosed embodiment can be folded and unfolded by rotating the first shell 21 and the second shell 22 relative to the rotation axis 1, that is, the foldable electronic device 100 can be switched between a flattened state and a folded state.

[0067] By setting the first curved surface 212 on the first shell 21, in the process of switching from the folded state to the flattened state, the first curved surface 212 is used to stop at the bending portion 32, so as to guide the bending portion 32 to bend into a preset shape, and also make the first curved surface 212 and the bending portion 32 in surface contact, and when the first curved surface 212 stops at the bending portion 32, the portion where the bending portion 32 contacts the first curved surface 212 is consistent with the shape of the first curved surface 212, so that the bending radius of the portion where the bending portion 32 contacts the first curved surface 212 is controllable, and by reasonably designing the first curved surface 212, the bending radius of the bending portion 32 can be made larger, thereby alleviating the problem of large local stress in the flexible circuit board 3, reducing the risk of fracture and failure of the flexible circuit board 3, and extending the service life of the foldable electronic device 100.

[0068] By providing a second curved surface 222 on the second shell 22, in the process of switching from the folded state to the flattened state, the second curved surface 222 is used to stop at the bending portion 32, so as to guide the bending portion 32 to bend into a preset shape, and the second curved surface 222 and the bending portion 32 are in surface contact, and when the second curved surface 222 stops at the bending portion 32, the portion where the bending portion 32 contacts the second curved surface 222 is consistent with the shape of the second curved surface 222, so that the bending radius of the portion where the bending portion 32 contacts the second curved surface 222 is controllable, and by reasonably designing the second curved surface 222, the bending radius of the bending portion 32 can be made larger, thereby alleviating the problem of large local stress in the flexible circuit board 3, reducing the risk of fracture and failure of the flexible circuit board 3, and extending the service life of the foldable electronic device 100.

[0069] like Figures 3 to 5 As shown, the flexible circuit board 3 includes a first fixing portion 31 and a second fixing portion 33, and the bending portion 32 is arranged between the first fixing portion 31 and the second fixing portion 33. The first housing 21 has a first mounting portion 211, and the first fixing portion 31 is connected to the first mounting portion 211. The second housing 22 has a second mounting portion 221, and the second fixing portion 33 is connected to the second mounting portion 221. Among them, the first arc surface 212 is arranged between the first mounting portion 211 and the rotating shaft 1, and the second arc surface 222 is arranged between the second mounting portion 221 and the rotating shaft 1.

[0070] The first fixing portion 31 of the flexible circuit board 3 is connected to the first mounting portion 211 of the first housing 21 to realize the connection between the flexible circuit board 3 and the first housing 21, so that when the first housing 21 rotates relative to the rotation shaft 1, the first fixing portion 31 can move with the first housing 21 by bending the bending portion 32, thereby ensuring the reliable connection between the flexible circuit board 3 and the internal components of the first housing 21. The second fixing portion 33 of the flexible circuit board 3 is connected to the second mounting portion 221 of the second housing 22 to realize the connection between the flexible circuit board 3 and the second housing 22, so that when the second housing 22 rotates relative to the rotation shaft 1, the second fixing portion 33 can move with the second housing 22 by bending the bending portion 32, thereby ensuring the reliable connection between the flexible circuit board 3 and the internal components of the second housing 22. This is conducive to improving the reliability of the foldable electronic device 100.

[0071] like Figure 3 and Figure 4 As shown, the bending portion 32 further includes a shaft-penetrating portion 327 , which passes through the rotating shaft 1 , so that a portion of the bending portion 32 is located inside the rotating shaft 1 , a portion is located on one side of the rotating shaft 1 , and another portion is located on the other side of the rotating shaft 1 .

[0072] like Figure 3 and Figure 4 As shown, the housing assembly 2 further includes a shaft cover 25, the shaft cover 25 is connected to the rotating shaft 1, and the shaft-penetrating portion 327 is disposed between the rotating shaft 1 and the shaft cover 25. The first housing 21 and the shaft cover 25 are sealed together, and the second housing 22 and the shaft cover 25 are sealed together.

[0073] By providing the shaft cover 25, and sealingly matching the first shell 21 with the shaft cover 25, and sealingly matching the second shell 22 with the shaft cover 25, on the one hand, it can prevent the shaft 1 from being exposed to the outside during the use of the foldable electronic device 100, thereby affecting the aesthetics of the foldable electronic device 100; on the other hand, it can improve the sealing of the shell assembly 2 and the waterproof performance of the shell assembly 2, thereby improving the waterproof performance of the foldable electronic device 100.

[0074] Alternatively, if Figures 3 to 5 As shown, the foldable electronic device 100 further includes a first pressing member 4. The first pressing member 4 is connected to the first housing 21. The first pressing member 4 has a third arcuate surface 41. In the process of switching from the folded state to the flattened state, the third arcuate surface 41 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape. The third arcuate surface 41 is arranged on a side of the first pressing member 4 close to the flexible circuit board 3, and the third arcuate surface 41 is arranged between the first mounting portion 211 and the rotating shaft 1.

[0075] By providing the third curved surface 41 on the first pressing member 4, when the foldable electronic device 100 switches from the folded state to the flattened state, the third curved surface 41 is used to stop at the bending portion 32, and the third curved surface 41 can be used to guide the bending portion 32 to bend into a preset shape, so that the bending portion 32 is easier to bend into the preset shape. By reasonably designing the third curved surface 41, the bending radius of the bending portion 32 can be made larger, the problem of large local stress in the flexible circuit board 3 can be alleviated, the risk of fracture and failure of the flexible circuit board 3 can be further reduced, and the service life of the foldable electronic device 100 can be extended.

[0076] Optionally, the foldable electronic device 100 further includes a second pressing member 5, which is connected to the second housing 22. The second pressing member 5 has a fourth arcuate surface 51, and in the process of switching from the folded state to the flattened state, the fourth arcuate surface 51 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape. The fourth arcuate surface 51 is provided on a side of the second pressing member 5 close to the flexible circuit board 3, and the fourth arcuate surface 51 is provided between the second mounting portion 221 and the rotating shaft 1.

[0077] By providing the fourth curved surface 51 on the second pressing member 5, when the foldable electronic device 100 switches from the folded state to the flattened state, the fourth curved surface 51 is used to stop at the bending portion 32, and the fourth curved surface 51 can be used to guide the bending portion 32 to bend into a preset shape, so that the bending portion 32 is easier to bend into the preset shape. By reasonably designing the fourth curved surface 51, the bending radius of the bending portion 32 can be larger, the problem of large local stress in the flexible circuit board 3 can be alleviated, the risk of fracture and failure of the flexible circuit board 3 can be further reduced, and the service life of the foldable electronic device 100 can be extended.

[0078] like Figure 3 and Figure 4 As shown, in the flattened state, the housing assembly 2 has a first surface 23 and a second surface 24 disposed opposite to each other, and one of the first surface 23 and the second surface 24 is used to support the flexible screen. Figure 3 and Figure 4 In the embodiment, the first surface 23 is used to support the flexible screen.

[0079] Optionally, in the flattened state, the bending portion 32 includes a first convex portion 321, a second convex portion 322, and a third convex portion 323 arranged in sequence, the second convex portion 322 is convexly arranged toward the first surface 23, and the first convex portion 321 and the third convex portion 323 are both convexly arranged away from the first surface 23. The first arcuate surface 212 stops at a portion of the first convex portion 321 close to the second convex portion 322 in the direction toward the first surface 23, and the third arcuate surface 41 stops at a portion of the third convex portion 323 close to the second convex portion 322 in the direction toward the first surface 23.

[0080] It can be understood that, in the flattened state, the portion of the first protrusion 321 close to the second protrusion 322 and the portion of the third protrusion 323 close to the second protrusion 322 both have a restoring elastic force in the direction away from the first surface 23. The first curved surface 212 is used to stop at the portion of the first protrusion 321 close to the second protrusion 322 in the direction toward the first surface 23, and the third curved surface 41 is used to stop at the portion of the third protrusion 323 close to the second protrusion 322 in the direction toward the first surface 23, so that the bending portion 32 is easier to bend according to the preset shape, which is beneficial to further reduce the risk of breakage and failure of the flexible circuit board 3 and extend the service life of the foldable electronic device 100.

[0081] In addition, the arrangement of the first protrusion 321, the second protrusion 322 and the third protrusion 323 allows the bending portion 32 to be bent more times, thereby making the overall length of the bending portion 32 longer within a limited space, that is, reducing the redundant length of the flexible circuit board 3, which is beneficial to improving the space utilization inside the shell assembly 2.

[0082] Alternatively, if Figure 3 and Figure 5 As shown, in the flattened state, the bending portion 32 includes a fourth convex portion 324, a fifth convex portion 325 and a sixth convex portion 326 arranged in sequence, the fifth convex portion 325 is convexly arranged toward the first surface 23, and the fourth convex portion 324 and the sixth convex portion 326 are both convexly arranged away from the first surface 23. The second arcuate surface 222 stops at a portion of the fourth convex portion 324 close to the fifth convex portion 325 in the direction toward the first surface 23, and the fourth arcuate surface 51 stops at a portion of the sixth convex portion 326 close to the fifth convex portion 325 in the direction toward the first surface 23.

[0083] It can be understood that, in the flattened state, the portion of the fourth protrusion 324 close to the fifth protrusion 325 and the portion of the sixth protrusion 326 close to the fifth protrusion 325 both have a reset elastic force in the direction away from the first surface 23. The second curved surface 222 is used to stop at the portion of the fourth protrusion 324 close to the fifth protrusion 325 in the direction toward the first surface 23, and the fourth curved surface 51 is used to stop at the portion of the sixth protrusion 326 close to the fifth protrusion 325 in the direction toward the first surface 23, so that the bending portion 32 is easier to bend according to the preset shape, which is beneficial to further reduce the risk of breakage and failure of the flexible circuit board 3 and extend the service life of the foldable electronic device 100.

[0084] In addition, the arrangement of the fourth protrusion 324, the fifth protrusion 325 and the sixth protrusion 326 allows the bending portion 32 to be bent more times, thereby making the overall length of the bending portion 32 longer within a limited space, that is, reducing the redundant length of the flexible circuit board 3, which is beneficial to improving the space utilization inside the shell assembly 2.

[0085] Alternatively, if Figure 3 and Figure 4 As shown, the first housing 21 further has a fifth arcuate surface 213, and during the switching process between the flattened state and the folded state, the portion of the third protrusion 323 close to the second protrusion 322 is clamped between the third arcuate surface 41 and the fifth arcuate surface 213. The fifth arcuate surface 213 is provided on one side of the first housing 21 close to the flexible circuit board 3.

[0086] The portion of the third convex portion 323 close to the second convex portion 322 is clamped between the third arc surface 41 and the fifth arc surface 213. On the one hand, the bending portion 32 is easier to bend according to the preset shape, which is beneficial to further reduce the risk of fracture failure of the flexible circuit board 3 and extend the service life of the foldable electronic device 100; on the other hand, the sealing between the first shell 21 and the first pressing member 4 can be achieved to prevent water and the like from entering the interior of the first shell 21 through the first shell 21 and the first pressing member 4, which is beneficial to improve the waterproof performance of the foldable electronic device 100. In addition, it can be understood that the flexible circuit board 3 usually includes a multi-layer circuit board body arranged in a stacked manner. In order to ensure the bending performance of the bending portion 32, the adjacent circuit board bodies at the bending portion 32 can move relative to each other. The portion of the third convex portion 323 close to the second convex portion 322 is clamped between the third arc surface 41 and the fifth arc surface 213, which can also prevent the adjacent circuit board bodies from being delaminated during the bending process of the flexible circuit board 3, thereby reducing the risk of abnormal slapping noise during the bending process of the flexible circuit board 3.

[0087] Alternatively, if Figure 3 and Figure 4 As shown, at least one of the third arcuate surface 41 and the fifth arcuate surface 213 is a convex arcuate surface convexly arranged toward the bending portion 32. In other words, the third arcuate surface 41 is a convex arcuate surface convexly arranged toward the bending portion 32, and the fifth arcuate surface 213 is a concave arcuate surface concavely arranged toward the bending portion 32; or, the third arcuate surface 41 is a concave arcuate surface concavely arranged toward the bending portion 32, and the fifth arcuate surface 213 is a convex arcuate surface convexly arranged toward the bending portion 32; or, both the third arcuate surface 41 and the fifth arcuate surface 213 are convex arcuate surfaces convexly arranged toward the bending portion 32. Preferably, both the third arcuate surface 41 and the fifth arcuate surface 213 are convex arcuate surfaces convexly arranged toward the bending portion 32.

[0088] By making at least one of the third curved surface 41 and the fifth curved surface 213 a convex curved surface protruding toward the bending portion 32, each part of the convex curved surface can apply a force toward the bending portion 32, thereby making it easier for the three curved surfaces 41 and the fifth curved surface 213 to maintain a state of clamping the third convex portion 323 during the switching of the foldable electronic device 100 between the flattened state and the folded state, thereby making the seal between the first shell 21 and the first clamping member 4 more reliable, and helping to further improve the waterproof performance of the foldable electronic device 100.

[0089] Optionally, the first curved surface 212 has a radius of curvature greater than or equal to 0.5 mm, and / or the third curved surface 41 has a radius of curvature greater than or equal to 0.5 mm, and / or the fifth curved surface 213 has a radius of curvature greater than or equal to 1 mm. Preferably, the first curved surface 212 has a radius of curvature greater than or equal to 0.5 mm, the third curved surface 41 has a radius of curvature greater than or equal to 0.5 mm, and the fifth curved surface 213 has a radius of curvature greater than or equal to 1 mm.

[0090] Through the above-mentioned design of the first arcuate surface 212, the third arcuate surface 41 and the fifth arcuate surface 213, the bending radius of the portion of the bending portion 32 located in the first shell 21 can be made larger, further extending the service life of the foldable electronic device 100.

[0091] Optionally, the first arc surface 212 is a convex arc surface that is convexly disposed toward the bending portion 32 .

[0092] By configuring the first arc surface 212 to be a convex arc surface protruding toward the bending portion 32, the first arc surface 212 can more easily contact the bending portion 32 during the process of switching the foldable electronic device 100 from the flat state to the folded state, thereby making it easier to use the first arc surface 212 to guide the bending portion 32 to bend into a preset shape.

[0093] Alternatively, if Figure 3 and Figure 5 As shown, the second housing 22 further has a sixth arc surface 223. During the switching process between the flattened state and the folded state, the portion of the sixth protrusion 326 close to the fifth protrusion 325 is clamped between the fourth arc surface 51 and the sixth arc surface 223. The sixth arc surface 223 is provided on a side of the second housing 22 close to the flexible circuit board 3.

[0094] The portion of the sixth convex portion 326 close to the fifth convex portion 325 is clamped between the fourth arc surface 51 and the sixth arc surface 223. On the one hand, the bending portion 32 is easier to bend according to the preset shape, which is beneficial to further reduce the risk of fracture failure of the flexible circuit board 3 and extend the service life of the foldable electronic device 100; on the other hand, the sealing between the second shell 22 and the second pressing member 5 can be achieved to prevent water and the like from entering the interior of the second shell 22 through the second shell 22 and the second pressing member 5, which is beneficial to improve the waterproof performance of the foldable electronic device 100. In addition, it can be understood that the flexible circuit board 3 usually includes a multi-layer circuit board body arranged in a stacked manner. In order to ensure the bending performance of the bending portion 32, the adjacent circuit board bodies at the bending portion 32 can move relative to each other. The portion of the sixth convex portion 326 close to the fifth convex portion 325 is clamped between the fourth arc surface 51 and the sixth arc surface 223, which can also prevent the occurrence of delamination between the adjacent circuit board bodies during the bending process of the flexible circuit board 3, thereby reducing the risk of abnormal slapping noise during the bending process of the flexible circuit board 3.

[0095] Alternatively, if Figure 3 and Figure 5 As shown, at least one of the fourth arcuate surface 51 and the sixth arcuate surface 223 is a convex arcuate surface convexly arranged toward the bending portion 32. In other words, the fourth arcuate surface 51 is a convex arcuate surface convexly arranged toward the bending portion 32, and the sixth arcuate surface 223 is a concave arcuate surface concavely arranged toward the bending portion 32; or, the fourth arcuate surface 51 is a concave arcuate surface concavely arranged toward the bending portion 32, and the sixth arcuate surface 223 is a convex arcuate surface convexly arranged toward the bending portion 32; or, both the fourth arcuate surface 51 and the sixth arcuate surface 223 are convex arcuate surfaces convexly arranged toward the bending portion 32. Preferably, both the fourth arcuate surface 51 and the sixth arcuate surface 223 are convex arcuate surfaces convexly arranged toward the bending portion 32.

[0096] By making at least one of the fourth arc surface 51 and the sixth arc surface 223 a convex arc surface protruding toward the bending portion 32, each part of the convex arc surface can apply a force toward the bending portion 32 to the bending portion. Therefore, in the process of switching the foldable electronic device 100 between the flattened state and the folded state, it is more conducive to keeping the three arc surfaces 41 and the sixth arc surface 223 in a state of clamping the fourth convex portion 324, so that the seal between the second shell 22 and the second clamping member 5 is more reliable, which is beneficial to further improve the waterproof performance of the foldable electronic device 100.

[0097] Optionally, the radius of curvature of the second curved surface 222 is greater than or equal to 0.5 mm, and / or the radius of curvature of the fourth curved surface 51 is greater than or equal to 0.5 mm, and / or the radius of curvature of the sixth curved surface 223 is greater than or equal to 1 mm. Preferably, the radius of curvature of the second curved surface 222 is greater than or equal to 0.5 mm, the radius of curvature of the fourth curved surface 51 is greater than or equal to 0.5 mm, and the radius of curvature of the sixth curved surface 223 is greater than or equal to 1 mm.

[0098] Through the above-mentioned design of the second arcuate surface 222, the fourth arcuate surface 51 and the sixth arcuate surface 223, the bending radius of the part of the bending portion 32 located in the second shell 22 can be made larger, further extending the service life of the foldable electronic device 100.

[0099] Optionally, the second arc surface 222 is a convex arc surface that is convexly disposed toward the bending portion 32 .

[0100] By configuring the second arc surface 222 to be a convex arc surface protruding toward the bending portion 32, the second arc surface 222 can more easily contact the bending portion 32 during the process of switching the foldable electronic device 100 from the flat state to the folded state, thereby making it easier to use the second arc surface 222 to guide the bending portion 32 to bend into a preset shape.

[0101] Optionally, in a flattened state, a ratio of a radius of curvature at any point in the bending portion 32 to a thickness of the bending portion 32 is greater than or equal to 5.

[0102] By designing the curvature radius of the bending portion 32 as described above, the problem of large local stress on the flexible circuit board 3 can be effectively alleviated, further extending the service life of the foldable electronic device 100.

[0103] Alternatively, if Figure 4 and Figure 6 As shown, the first housing 21 has a first through hole 214 for the bent portion 32 to pass through, a portion of the first pressing member 4 is disposed outside the first through hole 214 and connected to the first housing 21, and another portion of the first pressing member 4 is disposed inside the first through hole 214 and matched with the first through hole 214. The third arc surface 41 is disposed on the portion of the first pressing member 4 located inside the first through hole 214.

[0104] Therefore, when the first pressing member 4 is connected to the first housing 21, a part of the first pressing member 4 can be placed in the first through-hole 214, and the first pressing member 4 can be pre-positioned by fitting the part of the first pressing member 4 with the first through-hole 214, and then the other part of the first pressing member 4 can be connected to the first housing 21. This is conducive to improving the convenience of connecting the first pressing member 4 with the first housing 21, and is conducive to reducing the assembly cost of the foldable electronic device 100.

[0105] Alternatively, if Figure 5 and Figure 6 As shown, the second housing 22 has a second through hole 224 for the bent portion 32 to pass through, a portion of the second pressing member 5 is disposed outside the second through hole 224 and connected to the second housing 22, and another portion of the second pressing member 5 is disposed inside the second through hole 224 and adapted to the second through hole 224. The fourth arcuate surface 51 is disposed on the portion of the second pressing member 5 located inside the second through hole 224.

[0106] Therefore, when the second pressing member 5 is connected to the second housing 22, a part of the second pressing member 5 can be placed in the first through-hole 214 first, and the second pressing member 5 can be pre-positioned by fitting the part of the second pressing member 5 with the first through-hole 214, and then the other part of the second pressing member 5 can be connected to the second housing 22. This is conducive to improving the convenience of connecting the second pressing member 5 with the second housing 22, and is conducive to reducing the assembly cost of the foldable electronic device 100.

[0107] Alternatively, if Figure 4 , Figures 7 to 9 As shown, the first pressing member 4 includes a first rigid portion 401 and a first elastic portion 402 connected to each other, the first rigid portion 401 is connected to the first shell 21 , and the first elastic portion 402 is interference fit with the hole wall of the first through hole 214 .

[0108] Utilizing the first rigid portion 401 to connect with the first shell 21 is beneficial to improving the connection reliability between the first clamping member 4 and the first shell 21, and utilizing the interference fit between the first elastic portion 402 and the hole wall of the first perforation 214 can achieve sealing of the first perforation 214, thereby preventing water and the like from entering the interior of the first shell 21 through the first perforation 214, which is beneficial to improving the waterproof performance of the foldable electronic device 100.

[0109] Alternatively, if Figure 5 , Figures 7 to 9 As shown, the second pressing member 5 includes a second rigid portion 501 and a second elastic portion 502 connected to each other, the second rigid portion 501 is connected to the first shell 21 , and the second elastic portion 502 is interference fit with the hole wall of the second through hole 224 .

[0110] Utilizing the second rigid portion 501 to connect with the second shell 22 is beneficial to improving the connection reliability between the second clamping member 5 and the second shell 22, and utilizing the interference fit between the second elastic portion 502 and the hole wall of the second perforation 224 to achieve sealing of the second perforation 224, thereby preventing water vapor and the like from entering the interior of the second shell 22 through the second perforation 224, which is beneficial to improving the waterproof performance of the foldable electronic device 100.

[0111] Alternatively, if Figure 4 , Figure 5 and Figure 8As shown, the third arc surface 41 is disposed on the first elastic portion 402 .

[0112] By arranging the third curved surface 41 on the first elastic portion 402, the third curved surface 41 is in elastic contact with the bending portion 32. This can reduce the risk of collision during the assembly and bending of the flexible circuit board 3, which is conducive to extending the service life of the flexible circuit board 3, thereby further extending the service life of the foldable electronic device 100.

[0113] Optionally, the fourth arc surface 51 is provided on the second elastic portion 502 .

[0114] By arranging it on the second elastic part 502, the fourth arc surface 51 is in elastic contact with the bending part 32. The risk of collision during the assembly and bending of the flexible circuit board 3 can be reduced, which is conducive to extending the service life of the flexible circuit board 3, thereby further extending the service life of the foldable electronic device 100.

[0115] Alternatively, if Figures 7 to 9 As shown, the first elastic portion 402 includes a first main body portion 4021 and a first limiting rib 4022 . The first main body portion 4021 is connected to the first rigid portion 401 . The first limiting rib 4022 is arranged around the first main body portion 4021 . The first limiting rib 4022 is interference fit with the hole wall of the first through hole 214 .

[0116] The first limiting rib 4022 has greater elasticity than the first main body 4021 and is more susceptible to elastic deformation. The interference fit between the first limiting rib 4022 and the hole wall of the first perforation 214 is beneficial to improving the sealing of the first perforation 214 and further improving the waterproof performance of the foldable electronic device 100.

[0117] Alternatively, if Figures 7 to 9 As shown, the second elastic portion 502 includes a second main body portion 5021 and a second limiting rib 5022 . The second main body portion 5021 is connected to the second rigid portion 501 . The second limiting rib 5022 is arranged around the second main body portion 5021 . The second limiting rib 5022 is interference fit with the hole wall of the second through hole 224 .

[0118] The second limiting rib 5022 has greater elasticity than the second main body 5021 and is more susceptible to elastic deformation. The interference fit between the second limiting rib 5022 and the hole wall of the second perforation 224 is beneficial to improving the sealing of the second perforation 224, which is beneficial to further improving the waterproof performance of the foldable electronic device 100.

[0119] Alternatively, if Figure 4As shown, the first rigid part 401 includes a first connecting part and a first supporting part, the first connecting part is connected to the first shell 21, at least a part of the first supporting part extends into the first through hole 214, and at least a part of the first supporting part is embedded in the first elastic part 402. At least a part of the first supporting part is embedded in the first elastic part 402, which can be understood as: at least a part of the first supporting part is embedded in the first elastic part 402, or in other words, the first elastic part 402 wraps at least a part of the first supporting part. Among them, the first elastic part 402 can be fixed to the first supporting part by hot pressing or vulcanization.

[0120] For example, Figure 4 As shown, the first rigid part 401 includes a first fixed arm, a first connecting arm and a first cantilever connected in sequence, the first cantilever and the first fixed arm are parallel to each other and spaced apart, and the first connecting arm is perpendicular to the first fixed arm. The first fixed arm is connected to the first shell 21, and the first connecting arm and the first cantilever extend into the first through hole 214 and are embedded in the first elastic part 402.

[0121] By performing the above-mentioned design on the first rigid part 401 , it is helpful to improve the connection reliability between the first rigid part 401 and the first elastic part 402 , thereby helping to further improve the sealing reliability at the first perforation 214 , and helping to further improve the waterproof performance of the foldable electronic device 100 .

[0122] Alternatively, if Figure 5 As shown, the second rigid part 501 includes a second connecting part and a second supporting part, the second connecting part is connected to the second shell 22, at least a part of the second supporting part extends into the second through hole 224, and at least a part of the second supporting part is embedded in the second elastic part 502. At least a part of the second supporting part is embedded in the second elastic part 502, which can be understood as: at least a part of the second supporting part is embedded in the second elastic part 502, or in other words, the second elastic part 502 wraps at least a part of the second supporting part. The second elastic part 502 can be fixed to the second supporting part by hot pressing or vulcanization.

[0123] For example, Figure 5 As shown, the second rigid part 501 includes a second fixed arm, a second connecting arm and a second cantilever connected in sequence, the second cantilever and the second fixed arm are parallel to each other and spaced apart, and the second connecting arm is perpendicular to the second fixed arm. The second fixed arm is connected to the second shell 22, and the second connecting arm and the second cantilever extend into the second through hole 224 and are embedded in the second elastic part 502.

[0124] By designing the second rigid part 501 as above, it is helpful to improve the connection reliability between the second rigid part 501 and the second elastic part 502, thereby further improving the sealing reliability at the second through hole 224, and further improving the waterproof performance of the foldable electronic device 100. Optionally, the first rigid part 401 and the second rigid part 501 are steel sheets, and the first elastic part 402 and the second elastic part 502 are rubber parts.

[0125] Alternatively, if Figures 6 to 8 As shown, the first through hole 214 is a long strip hole, the first shell 21 is provided with a plurality of first positioning portions 215, and the plurality of first positioning portions 215 are arranged at intervals along the length direction of the first through hole 214, and the first pressing member 4 is provided with a plurality of second positioning portions 42. The second positioning portions 42 correspond to the first positioning portions 215 one by one, and each second positioning portion 42 is positioned and matched with the corresponding first positioning portion 215. Among them, the long strip hole can be a waist-shaped hole.

[0126] For example, Figures 6 to 8 As shown, the number of the first positioning portion 215 and the number of the second positioning portion 42 are both two, and the two second positioning portions 42 are respectively disposed on both sides of the first through hole 214 in the length direction.

[0127] When the first clamping piece 4 is connected to the first shell 21, the second positioning portion 42 is used to cooperate with the corresponding first positioning portion 215 to achieve positioning between the first clamping piece 4 and the first shell 21. On the one hand, it is beneficial to improve the connection convenience between the first clamping piece 4 and the first shell 21; on the other hand, it is beneficial to improve the assembly accuracy between the first clamping piece 4 and the first shell 21.

[0128] Optionally, the second through hole 224 is a long strip hole. The second shell 22 is provided with a plurality of third positioning portions 225, and the plurality of third positioning portions 225 are arranged at intervals along the length direction of the second through hole 224, and the second pressing member 5 is provided with a plurality of fourth positioning portions 52. The fourth positioning portions 52 correspond to the third positioning portions 225 one by one, and each fourth positioning portion 52 is positioned and matched with the corresponding third positioning portion 225. Among them, the long strip hole can be a waist-shaped hole.

[0129] For example, Figures 6 to 8 As shown, the number of the third positioning portions 225 and the number of the fourth positioning portions 52 are both two, and the two fourth positioning portions 52 are respectively disposed on both sides of the second through hole 224 in the length direction.

[0130] When connecting the second clamping piece 5 with the second shell 22, the fourth positioning portion 52 and the corresponding third positioning portion 225 are used to position and cooperate with each other, so as to achieve positioning between the second clamping piece 5 and the second shell 22. On the one hand, it is beneficial to improve the connection convenience between the second clamping piece 5 and the second shell 22; on the other hand, it is beneficial to improve the assembly accuracy between the second clamping piece 5 and the second shell 22.

[0131] Alternatively, if Figures 6 to 8 As shown, the first positioning portion 215 is a first positioning column, which is cylindrical. The second positioning portion 42 is a first positioning hole, a portion of which is a circular hole, and another portion of which is a long strip hole.

[0132] For example, Figure 7 and Figure 8 As shown, one of the two second positioning portions 42 is a circular hole, and the other is an elongated hole. The elongated hole can be a waist-shaped hole.

[0133] By setting a portion of the first positioning holes as elongated holes, when the processing error between two adjacent second positioning portions 42 is large, each first positioning column can also be positioned and matched with the corresponding first positioning hole, thereby improving the tolerance between the first clamping member 4 and the first shell 21.

[0134] Alternatively, if Figures 6 to 8 As shown, the third positioning portion 225 is a second positioning column, the second positioning column is cylindrical, the fourth positioning portion 52 is a second positioning hole, a part of the second positioning hole is a circular hole, and another part of the second positioning hole is a long strip hole.

[0135] For example, Figure 7 and Figure 8 As shown, one of the two fourth positioning portions 52 is a circular hole, and the other is an elongated hole. The elongated hole may be a waist-shaped hole.

[0136] By setting a portion of the second positioning holes as elongated holes, when the processing error between two adjacent fourth positioning portions 52 is large, each second positioning column can also be positioned and matched with the corresponding second positioning hole, thereby improving the tolerance between the second clamping member 5 and the second shell 22.

[0137] Optionally, the first pressing member 4 is detachably connected to the first shell 21 .

[0138] For example, Figures 6 to 8 As shown, the first pressing member 4 is detachably connected to the first housing 21 by a first screw 61. Specifically, the first pressing member 4 is provided with a first connecting hole 43, the first housing 21 is provided with a first threaded hole, and the first screw 61 passes through the first connecting hole 43 and is threadedly connected with the first threaded hole.

[0139] The first pressing member 4 is detachably connected to the first shell 21 , which facilitates the maintenance and replacement of the first pressing member 4 , and is beneficial to improving the maintenance convenience of the foldable electronic device 100 .

[0140] Optionally, the second pressing member 5 is detachably connected to the second housing 22 .

[0141] For example, Figures 6 to 8 As shown, the second pressing member 5 is detachably connected to the second housing 22 by a second screw 62. Specifically, the second pressing member 5 is provided with a second connecting hole 53, the second housing 22 is provided with a second threaded hole, and the second screw 62 passes through the second connecting hole 53 and is threadedly connected with the second threaded hole.

[0142] The second pressing member 5 is detachably connected to the second shell 22 , which facilitates the maintenance and replacement of the second pressing member 5 , and is beneficial to improving the maintenance convenience of the foldable electronic device 100 .

[0143] Alternatively, if Figure 4 As shown, the first shell 21 includes a first part 2141 and a second part 2142 which are arranged relatively along the width direction of the first through hole 214, a part of the first clamping member 4 is connected to the first part 2141, and a first stopping portion 2143 is provided on the side of the second part 2142 away from the bending portion 32, and the first stopping portion 2143 is used to stop the first clamping member 4.

[0144] It can be understood that when a portion of the first clamping member 4 is connected to the first portion 2141 and the third curved surface 41 of the first clamping member 4 stops at the bending portion 32, the bending portion 32 will exert a reaction force on the first clamping member 4 to cause the portion of the first clamping member 4 located in the first through-hole 214 to tilt up, thereby affecting the sealing of the first clamping member 4 to the first through-hole 214 and the reliability of stopping at the bending portion 32.

[0145] By providing a first stopper 2143 on the side of the second portion 2142 away from the bent portion 32, and using the first stopper 2143 to stop the first clamping member 4, the part of the first clamping member 4 located in the first through hole 214 can be effectively prevented from tilting, thereby ensuring the sealing performance of the first clamping member 4 to the first through hole 214 and the reliability of the stopper 32 to the bent portion 32. In addition, when the first clamping member 4 is connected to the first housing 21, the first stopper 2143 can be firstly stopped and matched with a part of the first clamping member 4, and then the other part of the first clamping member 4 can be connected to the first housing 21, which is conducive to improving the assembly convenience of the first clamping member 4.

[0146] Optionally, the second shell 22 includes a third part 2241 and a fourth part 2242 arranged relatively to each other along the width direction of the second through hole 224, a part of the second clamping member 5 is connected to the third part 2241, and a second stopping portion 2243 is provided on the side of the fourth part 2242 away from the bending portion 32, and the second stopping portion 2243 is used to stop the second clamping member 5.

[0147] It can be understood that when a portion of the second clamping member 5 is connected to the third portion 2241 and the fourth arc surface 51 of the second clamping member 5 stops at the bending portion 32, the bending portion 32 will exert a reaction force on the second clamping member 5 to cause the portion of the second clamping member 5 located in the second through-hole 224 to tilt up, thereby affecting the sealing of the second clamping member 5 to the second through-hole 224 and the reliability of stopping at the bending portion 32.

[0148] By providing a second stopper 2243 on the side of the second portion 2142 away from the bending portion 32, and using the second stopper 2243 to stop the second pressing member 5, the part of the second pressing member 5 located in the second through hole 224 can be effectively prevented from tilting, thereby ensuring the sealing performance of the second pressing member 5 to the second through hole 224 and the reliability of the second pressing member 5 to stop the bending portion 32. In addition, when connecting the second pressing member 5 to the second housing 22, the second stopper 2243 can be firstly engaged with a part of the second pressing member 5, and then the other part of the second pressing member 5 can be connected to the second housing 22, which is conducive to improving the assembly convenience of the second pressing member 5.

[0149] Optionally, the first stopping portion 2143 is plate-shaped, and a surface of the first elastic portion 402 away from the bending portion 32 fits with a surface of the first stopping portion 2143 close to the bending portion 32 .

[0150] The first elastic portion 402 is fitted with the first stopping portion 2143 , which is beneficial to further improve the sealing of the first through hole 214 and further improve the waterproof performance of the foldable electronic device 100 .

[0151] The second stopping portion 2243 is in a plate shape, and a surface of the second elastic portion 502 away from the bending portion 32 is in contact with a surface of the second stopping portion 2243 close to the bending portion 32 .

[0152] The second elastic portion 502 is fitted with the second stopping portion 2243 , which is beneficial to further improve the sealing of the second through hole 224 and further improve the waterproof performance of the foldable electronic device 100 .

[0153] The flexible circuit board 3 in the foldable electronic device 100 of the disclosed embodiment has a bending life of 20W times without failure after the 100-level verification; 40W times without failure after the 20-level verification; and 50W times without failure after the 10-level verification. In the process of the foldable electronic device 100 switching from the folded state to the unfolded state, the flexible circuit board 3 is folded without abnormal sound. The shell assembly 2 and the clamping member (the first clamping member 4 and the second clamping member 5) work together to achieve the installation and fixation of the clamping member, avoid manpower waste, and improve assembly efficiency.

[0154] It should be noted that Figures 1 to 6 In the structure shown, the bending portion 32 of the flexible circuit board 3 is a symmetrical structure, that is, the first part of the bending portion 32 is arranged corresponding to the first shell 21, the second part of the bending portion 32 is arranged corresponding to the second shell 22, and the first part and the second part of the bending portion 32 are symmetrical about the rotation axis 1. The first shell 21 and the second shell 22 are both provided with an arc surface for guiding the bending portion 32 to bend, and the first pressing member 4 connected to the first shell 21 and the second pressing member 5 connected to the second shell 22 are provided with an arc surface for guiding the bending portion 32 to bend. In other embodiments, the bending portion 32 may also be an asymmetric structure. For example, an arcuate surface for guiding the bending portion 32 to bend is only provided on the first shell 21, and an arcuate surface for guiding the bending portion 32 to bend is provided on the first clamping member 4. As for the structure of the second shell 22 and the structure of the second clamping member 5 connected to the second shell 22, the structure in the related technology may be adopted; or, an arcuate surface for guiding the bending portion 32 to bend is only provided on the second shell 22, and an arcuate surface for guiding the bending portion 32 to bend is provided on the second clamping member 5. As for the structure of the first shell 21 and the structure of the first clamping member 4 connected to the first shell 21, the structure in the related technology may be adopted.

[0155] Example 2

[0156] The only difference between the foldable electronic device 100 of the disclosed embodiment and the above-mentioned embodiment 1 is that the first curved surface 212 and the fifth curved surface 213 are not provided on the first shell 21, and the second curved surface 222 and the sixth curved surface 223 are not provided on the second shell 22, and only the curved surface is provided on the clamping member, and in the process of switching from the folded state to the flattened state, only the curved surface on the clamping member is used to guide the bending portion 32 to bend into a preset shape.

[0157] Specifically, the foldable electronic device 100 includes a rotating shaft 1, a housing assembly 2 and a flexible circuit board 3. The housing assembly 2 includes a first housing 21 and a second housing 22. The first housing 21 and the second housing 22 are respectively rotatably connected to both sides of the rotating shaft 1, so that the foldable electronic device 100 can switch between a flattened state and a folded state. The flexible circuit board 3 includes a bendable bending portion 32.

[0158] Among them, the foldable electronic device 100 also includes a first pressing member 4, which is connected to the first shell 21, and the first pressing member 4 has a third curved surface 41. In the process of switching from the folded state to the flattened state, the third curved surface 41 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape; and / or, the foldable electronic device 100 also includes a second pressing member 5, which is connected to the second shell 22, and the second pressing member 5 has a fourth curved surface 51. In the process of switching from the folded state to the flattened state, the fourth curved surface 51 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape.

[0159] In addition, in the foldable electronic device in the related art, the flexible circuit board usually includes a multi-layer circuit board body arranged in a stacked manner, and the two adjacent layers of the circuit board body are bonded at the fixed part by colloid to improve the rigidity of the fixed part, thereby facilitating the connection between the fixed part and the shell. In addition, a fixing frame (such as a fixed steel sheet) is usually bonded at the fixed part by colloid to further improve the rigidity of the fixed part. This results in a larger rigidity at the edge of the bending part, that is, the part of the bending part close to the fixed part has a larger rigidity, which in turn leads to a larger edge stress during the bending process of the bending part, resulting in the problem that the flexible circuit board is prone to fracture and failure, affecting the service life of the foldable electronic device. In addition, since the two adjacent layers of the circuit board body are bonded at the fixed part by colloid, and the fixed part and the fixing frame are bonded by colloid, the colloid used for bonding is easy to overflow to the edge of the bending part, further increasing the stress at the edge during the bending process of the bending part, and further increasing the risk of fracture and failure of the flexible circuit board.

[0160] The foldable electronic device of the disclosed embodiment innovatively designs the fixing part of the flexible circuit board so that the fixing part includes a part with greater rigidity and a part with less rigidity. The part with greater rigidity can facilitate the positioning and fixation between the flexible circuit board and the shell, while the stiffness of the edge of the bending part corresponding to the part with less rigidity will also be smaller, thereby reducing the stress on the edge of the bending part during the bending process, reducing the risk of breakage and failure of the flexible circuit board, and extending the service life of the foldable electronic device.

[0161] Embodiments of the present disclosure are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present disclosure, but should not be understood as limiting the present disclosure.

[0162] Example 3

[0163] like Figures 3 to 5 , Figures 10 to 15As shown, the foldable electronic device 100 of the embodiment of the present disclosure includes a rotating shaft 1, a housing assembly 2 and a flexible circuit board 3. The housing assembly 2 includes a first housing 21 and a second housing 22. The first housing 21 and the second housing 22 are respectively rotatably connected to both sides of the rotating shaft 1, so that the foldable electronic device 100 can switch between a flattened state and a folded state. The flexible circuit board 3 includes a multi-layer circuit board body arranged in layers.

[0164] The first housing 21 has a first mounting portion 211, the flexible circuit board 3 includes a first fixed portion 31 and a bendable bending portion 32 arranged in sequence, the first fixed portion 31 is connected to the first mounting portion 211, the first fixed portion 31 includes a first adhesive portion 311 and a first non-adhesive portion 312, the two adjacent layers of the circuit board bodies are bonded at the first adhesive portion 311, and the two adjacent layers of the circuit board bodies can move relative to each other at the first non-adhesive portion 312. And / or, the second housing 22 has a second mounting portion 221, the flexible circuit board 3 includes a bendable bending portion 32 and a second fixed portion 33 arranged in sequence, the second fixed portion 33 is connected to the second mounting portion 221, the second fixed portion 33 includes a second adhesive portion 331 and a second non-adhesive portion 332, the two adjacent layers of the circuit board bodies are bonded at the second adhesive portion 331, and the two adjacent layers of the circuit board bodies can move relative to each other at the second non-adhesive portion 332. Can move relative to each other Can move relative to each other.

[0165] The foldable electronic device 100 of the disclosed embodiment can be folded or unfolded by rotating the first shell 21 and the second shell 22 relative to the rotation axis 1. The first fixing portion 31 of the flexible circuit board 3 is connected to the first mounting portion 211 of the first shell 21 to achieve the connection between the flexible circuit board 3 and the first shell 21, so that when the first shell 21 rotates relative to the rotation axis 1, the first fixing portion 31 can move with the first shell 21 by bending the bending portion 32. The second fixing portion 33 of the flexible circuit board 3 is connected to the second mounting portion 221 of the second shell 22 to achieve the connection between the flexible circuit board 3 and the second shell 22, so that when the second shell 22 rotates relative to the rotation axis 1, the second fixing portion 33 can move with the second shell 22 by bending the bending portion 32.

[0166] The two adjacent layers of the circuit board bodies can move relative to each other at the first non-adhesive portion 312, which can be understood as: the two adjacent layers of the circuit board bodies are not connected at the first non-adhesive portion 312. The two adjacent layers of the circuit board bodies are not connected at the first non-adhesive portion 312, so that there is a gap between the two adjacent layers of the circuit board bodies of the first non-adhesive portion 312, which is softer and easier to bend. The two adjacent layers of the circuit board bodies can move relative to each other at the second non-adhesive portion 332, which can be understood as: the two adjacent layers of the circuit board bodies are not connected at the second non-adhesive portion 332. The two adjacent layers of the circuit board bodies are not connected at the second non-adhesive portion 332, so that there is a gap between the two adjacent layers of the circuit board bodies of the second non-adhesive portion 332, which is softer and easier to bend.

[0167] When the bending portion 32 is bent, two adjacent layers of the circuit board body are bonded at the first bonding portion 311, and two adjacent layers of the circuit board body can move relative to each other at the first non-bonding portion 312. On the one hand, the rigidity of the first bonding portion 311 of the first fixed portion 31 is larger, which can facilitate the connection between the first fixed portion 31 and the first shell 21. On the other hand, the rigidity of the first non-bonding portion 312 of the first fixed portion 31 is smaller, thereby reducing the rigidity of the edge of the bending portion 32 corresponding to the first non-bonding portion 312, thereby reducing the stress on the edge of the bending portion 32 during the bending process, reducing the risk of breakage and failure of the flexible circuit board 3, and extending the service life of the foldable electronic device 100.

[0168] When the bending portion 32 is bent, two adjacent layers of the circuit board body are bonded at the second bonding portion 331, and two adjacent layers of the circuit board body can move relative to each other at the second non-bonding portion 332. On the one hand, the rigidity at the second bonding portion 331 of the second fixed portion 33 is larger, which can facilitate the connection between the second fixed portion 33 and the second shell 22. On the other hand, the rigidity at the second non-bonding portion 332 of the second fixed portion 33 is smaller, thereby reducing the rigidity of the edge of the bending portion 32 corresponding to the second non-bonding portion 332, thereby reducing the stress on the edge of the bending portion 32 during the bending process, reducing the risk of breakage and failure of the flexible circuit board 3, and extending the service life of the foldable electronic device 100.

[0169] Optionally, the first adhesive portion 311 is connected to the first mounting portion 211 , and the first non-adhesive portion 312 is connected to the first mounting portion 211 so as to be movable relative to each other.

[0170] When the bending portion 32 is bent, the first non-adhesive portion 312 and the first mounting portion 211 can move relative to each other, which is beneficial to further reduce the stiffness of the first non-adhesive portion 312 of the first fixed portion 31, thereby further reducing the stiffness of the edge of the bending portion 32 corresponding to the first non-adhesive portion 312, thereby reducing the stress on the edge of the bending portion 32 during the bending process, reducing the risk of breakage and failure of the flexible circuit board 3, and extending the service life of the foldable electronic device 100.

[0171] Optionally, the second adhesive portion 331 is connected to the second mounting portion 221 , and the second non-adhesive portion 332 and the second mounting portion 221 are movable relative to each other.

[0172] When the bending portion 32 is bent, the second non-adhesive portion 332 and the second mounting portion 221 can move relative to each other, which is beneficial to further reduce the stiffness of the second non-adhesive portion 332 of the second fixed portion 33, thereby further reducing the stiffness of the edge of the bending portion 32 corresponding to the second non-adhesive portion 332, thereby reducing the stress on the edge of the bending portion 32 during the bending process, reducing the risk of breakage and failure of the flexible circuit board 3, and extending the service life of the foldable electronic device 100.

[0173] Alternatively, if Figure 4 , Figure 5 , Fig.10 , Fig.11 and Fig.14 As shown, the foldable electronic device 100 further includes a first fixing frame 7, and the first fixing frame 7 is connected to the first fixing portion 31. Fig.11 , Fig.13 and Fig.14 As shown, the first fixing frame 7 includes a third adhesive portion 71 and a third non-adhesive portion 72 . The third adhesive portion 71 is arranged corresponding to the first adhesive portion 311 and is bonded to the first adhesive portion 311 , and the third non-adhesive portion 72 is arranged corresponding to the first non-adhesive portion 312 and can move relative to the first non-adhesive portion 312 .

[0174] The third non-adhesive portion 72 can move relative to the first non-adhesive portion 312, which can be understood as: the third non-adhesive portion 72 is not connected to the first non-adhesive portion 312. The third non-adhesive portion 72 is not connected to the first non-adhesive portion 312, so that there is a gap between the third non-adhesive portion 72 and the first non-adhesive portion 312, making the first non-adhesive portion 312 softer and easier to bend.

[0175] The third adhesive portion 71 is provided corresponding to the first adhesive portion 311 and is bonded to the first adhesive portion 311, which can increase the rigidity of the first adhesive portion 311 of the first fixing portion 31, thereby improving the convenience of connection between the first fixing portion 31 and the first housing 21. The third non-adhesive portion 72 is provided corresponding to the first non-adhesive portion 312 and can move relative to the first non-adhesive portion 312, so that the first non-adhesive portion 312 of the first fixing portion 31 maintains a relatively low rigidity, and when the bending portion 32 is bent, the risk of fracture and failure of the flexible circuit board 3 is reduced, thereby extending the service life of the foldable electronic device 100.

[0176] like Figure 4 , Figure 5 , Fig.10 , Fig.11 and Fig.14 As shown, the foldable electronic device 100 further includes a second fixing frame 8, and the second fixing frame 8 is connected to the second fixing portion 33. Fig.14 and Fig.15 As shown, the second fixing frame 8 includes a fourth bonding portion 81 and a fourth non-bonding portion 82 . The fourth bonding portion 81 is arranged corresponding to the second bonding portion 331 and bonded to the second bonding portion 331 . The fourth non-bonding portion 82 is arranged corresponding to the second non-bonding portion 332 and can move relative to the second non-bonding portion 332 .

[0177] The fourth non-adhesive portion 82 can move relative to the second non-adhesive portion 332, which can be understood as: the fourth non-adhesive portion 82 is not connected to the second non-adhesive portion 332. The fourth non-adhesive portion 82 is not connected to the second non-adhesive portion 332, so that there is a gap between the fourth non-adhesive portion 82 and the second non-adhesive portion 332, making the second non-adhesive portion 332 more flexible and easy to bend.

[0178] The fourth adhesive portion 81 is provided corresponding to the second adhesive portion 331 and is bonded to the second adhesive portion 331, which can increase the rigidity of the second adhesive portion 331 of the second fixing portion 33, thereby improving the connection convenience between the second fixing portion 33 and the first housing 21. The fourth non-adhesive portion 82 is provided corresponding to the second non-adhesive portion 332 and can move relative to the second non-adhesive portion 332, so that the second non-adhesive portion 332 of the second fixing portion 33 maintains a relatively low rigidity, and when the bending portion 32 is bent, the risk of fracture and failure of the flexible circuit board 3 is reduced, thereby extending the service life of the foldable electronic device 100.

[0179] Alternatively, if Fig.12 and Fig.15 As shown, the first fixing portion 31 is in a long strip shape, and the first bonding portions 311 are arranged on both sides of the first non-bonding portion 312 in the length direction of the first fixing portion 31 .

[0180] Therefore, even if the first adhesive portion 311 overflows the colloid, at least part of the colloid can overflow to the outside of the flexible circuit board 3, for example, overflow along the length direction of the first fixed portion 31 to the side of the first adhesive portion 311 away from the first non-adhesive portion 312, thereby reducing the risk of the colloid overflowing to the bending portion 32, reducing the stiffness of the edge of the bending portion 32 corresponding to the first adhesive portion 311, further reducing the risk of the flexible circuit board 3 breaking and failing, and extending the service life of the foldable electronic device 100.

[0181] Alternatively, if Fig.15 As shown, the second fixing portion 33 is in an elongated strip shape, and the second adhesive portions 331 are arranged on both sides of the second non-adhesive portion 332 in the length direction of the second fixing portion 33 .

[0182] Therefore, even if the second adhesive portion 331 overflows, at least part of the colloid can overflow to the outside of the flexible circuit board 3, for example, overflow along the length direction of the second fixed portion 33 to the side of the second adhesive portion 331 away from the second non-adhesive portion 332, thereby reducing the risk of the colloid overflowing to the bending portion 32, reducing the stiffness of the edge of the bending portion 32 corresponding to the second adhesive portion 331, further reducing the risk of the flexible circuit board 3 breaking and failing, and extending the service life of the foldable electronic device 100.

[0183] Alternatively, if Fig.12 As shown, the first fixing portion 31 includes a first protruding portion protruding from the bending portion 32 in the length direction thereof, and the first protruding portion forms a first bonding portion 311 .

[0184] The first adhesive portion 311 protrudes from the bending portion 32, so that the first adhesive portion 311 and the bending portion 32 are arranged in a staggered manner, that is, the portion of the first fixed portion 31 corresponding to the bending portion 32 is only the first non-adhesive portion 312. As a result, the edge stiffness of the bending portion 32 is only affected by the first non-adhesive portion 312. Since the stiffness of the first non-adhesive portion 312 of the first fixed portion 31 is relatively small, the stress on the edge of the bending portion 32 during the bending process is relatively small, which is beneficial to further reduce the risk of fracture failure of the flexible circuit board 3 and extend the service life of the foldable electronic device 100.

[0185] Optionally, the second fixing portion 33 includes a second protruding portion disposed protruding from the bending portion 32 in the length direction thereof, and the second protruding portion forms a second bonding portion 331 .

[0186] The second adhesive portion 331 is arranged to protrude from the bending portion 32, so that the second adhesive portion 331 and the bending portion 32 are arranged in a staggered manner, that is, the portion of the first fixing portion 31 corresponding to the bending portion 32 is only the second non-adhesive portion 332. As a result, the edge stiffness of the bending portion 32 is only affected by the second non-adhesive portion 332. Since the stiffness of the second non-adhesive portion 332 of the second fixing portion 33 is relatively small, the stress on the edge of the bending portion 32 during the bending process is relatively small, which is beneficial to further reduce the risk of fracture failure of the flexible circuit board 3 and extend the service life of the foldable electronic device 100.

[0187] Alternatively, if Fig.11 and Fig.13 As shown, the width of the third adhesive portion 71 is greater than the width of the third non-adhesive portion 72 , and correspondingly, the width of the first adhesive portion 311 is greater than the width of the first non-adhesive portion 312 .

[0188] The third adhesive portion 71 needs to be bonded to the first adhesive portion 311, while the third non-adhesive portion 72 does not need to be connected to the flexible circuit board 3. In fact, the third non-adhesive portion 72 mainly serves to improve the overall rigidity of the first fixing frame 7. Therefore, by setting the width of the third adhesive portion 71 to be greater than the width of the third non-adhesive portion 72, the overall material amount of the first fixing frame 7 can be reduced while ensuring the reliability of the connection between the third adhesive portion 71 and the first adhesive portion 311, which is conducive to reducing the cost of the foldable electronic device 100.

[0189] Optionally, the width of the fourth adhesive portion 81 is greater than the width of the fourth non-adhesive portion 82 , and correspondingly, the width of the second adhesive portion 331 is greater than the width of the second non-adhesive portion 332 .

[0190] The fourth adhesive portion 81 needs to be bonded to the second adhesive portion 331, while the fourth non-adhesive portion 82 does not need to be connected to the flexible circuit board 3. In fact, the fourth non-adhesive portion 82 mainly serves to improve the overall rigidity of the second fixing frame 8. Therefore, by setting the width of the third adhesive portion 71 to be greater than the width of the fourth non-adhesive portion 82, the overall material amount of the second fixing frame 8 can be reduced while ensuring the reliability of the connection between the fourth adhesive portion 81 and the second adhesive portion 331, which is conducive to reducing the cost of the foldable electronic device 100.

[0191] Alternatively, if Fig.11 As shown, the third non-bonding portion 72 is biased toward a side of the third bonding portion 71 away from the bending portion 32 .

[0192] By arranging the third non-adhesive portion 72 toward the side of the third adhesive portion 71 away from the bending portion 32, the third non-adhesive portion 72 is farther away from the bending portion 32. Therefore, during the bending process of the bending portion 32, it is possible to avoid the third non-adhesive portion 72 pressing the edge of the bending portion 32, resulting in greater stress on the edge of the bending portion 32, thereby further reducing the risk of fracture failure of the flexible circuit board 3 and extending the service life of the foldable electronic device 100.

[0193] Optionally, the fourth non-bonding portion 82 is disposed toward a side of the fourth bonding portion 81 away from the bending portion 32 .

[0194] By arranging the fourth non-adhesive portion 82 toward the side of the fourth adhesive portion 81 away from the bending portion 32, the fourth non-adhesive portion 82 is farther away from the bending portion 32. Therefore, during the bending process of the bending portion 32, it is possible to avoid the fourth non-adhesive portion 82 pressing the edge of the bending portion 32, resulting in greater stress on the edge of the bending portion 32, thereby further reducing the risk of fracture failure of the flexible circuit board 3 and extending the service life of the foldable electronic device 100.

[0195] Alternatively, if Fig.10 , Fig.11 and Fig.13 As shown, the first fixing frame 7 is U-shaped.

[0196] By setting the first fixing frame 7 to be U-shaped, the processing and manufacturing of the first fixing frame 7 is facilitated, which is beneficial to further reduce the cost of the foldable electronic device 100.

[0197] Alternatively, if Fig.10 , Fig.11 and Fig.13 As shown, the second fixing frame 8 is U-shaped.

[0198] By setting the second fixing frame 8 to be U-shaped, the processing and manufacturing of the second fixing frame 8 is facilitated, which is conducive to further reducing the cost of the foldable electronic device 100.

[0199] Optionally, the flexible circuit board 3 further includes an electrical connection portion 35 for connecting to the printed circuit board, and the electrical connection portion 35 and one of the third bonding portions 71 are arranged on the same side of the third non-bonding portion 72 in the length direction of the first fixing portion 31. In the length direction of the first fixing portion 31, the size of the third bonding portion 71 arranged adjacent to the electrical connection portion 35 is larger than the size of the third bonding portion 71 arranged away from the electrical connection portion 35. Correspondingly, in the length direction of the first fixing portion 31, the size of the first bonding portion 311 arranged adjacent to the electrical connection portion 35 is larger than the size of the first bonding portion 311 arranged away from the electrical connection portion 35.

[0200] It is understandable that the first adhesive portion 311 of the flexible circuit board 3 disposed adjacent to the electrical connection portion 35 is usually subjected to greater force. In the length direction of the first fixing portion 31, the size of the third adhesive portion 71 disposed adjacent to the electrical connection portion 35 is larger than the size of the third adhesive portion 71 disposed away from the electrical connection portion 35, so that the connection area between the first adhesive portion 311 disposed adjacent to the electrical connection portion 35 and the first housing 21 is larger, which is beneficial to improving the connection reliability between the first fixing portion 31 and the first housing 21.

[0201] Alternatively, if Figure 6 , Fig.11 , Fig.13 and Fig.14 As shown, the first mounting portion 211 has a plurality of first limiting portions 2111 , and the third bonding portion 71 has a second limiting portion 711 , the second limiting portions 711 correspond one-to-one to the first limiting portions 2111 , and each second limiting portion 711 is positioned and matched with the corresponding first limiting portion 2111 .

[0202] For example, the number of the first limiting portion 2111 and the number of the second limiting portion 711 are both two, and the two second limiting portions 711 are respectively arranged on both sides of the first fixing frame 7 .

[0203] Since the third bonding portion 71 is bonded to the first bonding portion 311, when the first fixing portion 31 is connected to the first shell 21, the second limiting portion 711 and the first limiting portion 2111 are used for positioning and cooperation, so as to achieve the positioning between the first fixing portion 31 and the first shell 21. On the one hand, it is beneficial to improve the connection convenience between the first fixing portion 31 and the first shell 21; on the other hand, it is beneficial to improve the assembly accuracy between the first fixing portion 31 and the first shell 21.

[0204] Alternatively, if Figure 6 and Fig.14 As shown, the second mounting portion 221 has a plurality of third limiting portions 2211 , and the fourth bonding portion 81 has a fourth limiting portion 811 , which corresponds one to one with the third limiting portions 2211 , and each fourth limiting portion 811 is positioned and matched with the corresponding third limiting portion 2211 .

[0205] For example, the number of the third limiting portions 2211 and the number of the fourth limiting portions 811 are both two, and the two fourth limiting portions 811 are respectively arranged on both sides of the second fixing frame 8 .

[0206] Since the fourth bonding portion 81 is bonded to the second bonding portion 331, when the second fixing portion 33 is connected to the first shell 21, the fourth limiting portion 811 and the third limiting portion 2211 are used for positioning and cooperation, so as to achieve the positioning between the second fixing portion 33 and the first shell 21. On the one hand, it is beneficial to improve the connection convenience between the second fixing portion 33 and the first shell 21; on the other hand, it is beneficial to improve the assembly accuracy between the second fixing portion 33 and the first shell 21.

[0207] Optionally, the first limiting portion 2111 is a limiting column, and the second limiting portion 711 is a limiting groove or a limiting hole.

[0208] The first limiting portion 2111 and the second limiting portion 711 have simple structures and are easy to manufacture.

[0209] The third limiting portion 2211 is a limiting column, and the fourth limiting portion 811 is a limiting groove or a limiting hole.

[0210] The third limiting portion 2211 and the fourth limiting portion 811 have simple structures and are easy to manufacture.

[0211] The foldable electronic device 100 of the disclosed embodiment adopts a method of partially connecting the fixed part of the flexible circuit board 3, which can increase the softness of the flexible circuit board 3, extend the service life of the flexible circuit board 3, and improve the assembly efficiency of the flexible circuit board 3.

[0212] Example 4

[0213] The foldable electronic device 100 of the embodiment of the present disclosure is different from the above-mentioned embodiment 1 in that the foldable electronic device 100 has the structure of the above-mentioned embodiment 3 in addition to the structure of the above-mentioned embodiment 1.

[0214] Specifically, the foldable electronic device 100 includes a rotating shaft 1, a housing assembly 2 and a flexible circuit board 3. The housing assembly 2 includes a first housing 21 and a second housing 22. The first housing 21 and the second housing 22 are respectively rotatably connected to both sides of the rotating shaft 1, so that the foldable electronic device 100 can switch between a flat state and a folded state. The flexible circuit board 3 includes a bendable bending portion 32, and the flexible circuit board 3 includes a multi-layer circuit board body arranged in layers.

[0215] The first shell 21 has a first curved surface 212, and in the process of switching from the folded state to the flattened state, the first curved surface 212 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape; and / or the second shell 22 has a second curved surface 222, and in the process of switching from the folded state to the flattened state, the second curved surface 222 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape;

[0216] The first shell 21 has a first mounting portion 211, the flexible circuit board 3 includes a first fixed portion 31 and a bendable bending portion 32 arranged in sequence, the first fixed portion 31 is connected to the first mounting portion 211, the first fixed portion 31 includes a first bonding portion 311 and a first non-bonding portion 312, the two adjacent layers of the circuit board body are bonded at the first bonding portion 311, and the two adjacent layers of the circuit board body can move relative to each other at the first non-bonding portion 312; and / or, the second shell 22 has a second mounting portion 221, the flexible circuit board 3 includes a bendable bending portion 32 and a second fixed portion 33 arranged in sequence, the second fixed portion 33 is connected to the second mounting portion 221, the second fixed portion 33 includes a second bonding portion 331 and a second non-bonding portion 332, the two adjacent layers of the circuit board body are bonded at the second bonding portion 331, and the two adjacent layers of the circuit board body can move relative to each other at the second non-bonding portion 332.

[0217] Example 5

[0218] The difference between the foldable electronic device 100 of the embodiment of the present disclosure and the above-mentioned embodiment 2 is that the foldable electronic device 100 has the structure of the above-mentioned embodiment 3 in addition to the structure of the above-mentioned embodiment 2.

[0219] Specifically, the foldable electronic device 100 includes a rotating shaft 1, a housing assembly 2 and a flexible circuit board 3. The housing assembly 2 includes a first housing 21 and a second housing 22. The first housing 21 and the second housing 22 are respectively rotatably connected to both sides of the rotating shaft 1, so that the foldable electronic device 100 can switch between a flat state and a folded state. The flexible circuit board 3 includes a bendable bending portion 32, and the flexible circuit board 3 includes a multi-layer circuit board body arranged in layers.

[0220] Wherein, the foldable electronic device 100 further includes a first pressing member 4, the first pressing member 4 is connected to the first shell 21, the first pressing member 4 has a third arcuate surface 41, in the process of switching from the folded state to the flattened state, the third arcuate surface 41 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape; and / or, the foldable electronic device 100 further includes a second pressing member 5, the second pressing member 5 is connected to the second shell 22, the second pressing member 5 has a fourth arcuate surface 51, in the process of switching from the folded state to the flattened state, the fourth arcuate surface 51 stops at the bending portion 32 to guide the bending portion 32 to bend into a preset shape;

[0221] The first shell 21 has a first mounting portion 211, the flexible circuit board 3 includes a first fixed portion 31 and a bendable bending portion 32 arranged in sequence, the first fixed portion 31 is connected to the first mounting portion 211, the first fixed portion 31 includes a first bonding portion 311 and a first non-bonding portion 312, the two adjacent layers of the circuit board body are bonded at the first bonding portion 311, and the two adjacent layers of the circuit board body can move relative to each other at the first non-bonding portion 312; and / or, the second shell 22 has a second mounting portion 221, the flexible circuit board 3 includes a bendable bending portion 32 and a second fixed portion 33 arranged in sequence, the second fixed portion 33 is connected to the second mounting portion 221, the second fixed portion 33 includes a second bonding portion 331 and a second non-bonding portion 332, the two adjacent layers of the circuit board body are bonded at the second bonding portion 331, and the two adjacent layers of the circuit board body can move relative to each other at the second non-bonding portion 332.

[0222] Although the embodiments of the present disclosure have been shown and described above, it is to be understood that the above embodiments are illustrative and cannot be construed as limitations on the present disclosure. Changes, modifications, substitutions and variations of the above embodiments by those of ordinary skill in the art are all within the scope of protection of the present disclosure.

Claims

1. A foldable electronic device, characterized in that: include: Rotating shaft; A housing assembly, the housing assembly comprising a first housing and a second housing, wherein the first housing and the second housing are rotatably connected to two sides of the rotating shaft, respectively, so that the foldable electronic device can be switched between a flattened state and a folded state; A flexible circuit board, wherein the flexible circuit board comprises a bendable bending portion; Wherein, the first shell has a first arcuate surface, and in the process of switching from the folded state to the flattened state, the first arcuate surface stops at the bent portion to guide the bent portion to bend into a preset shape; and / or The second shell has a second arc surface, and in the process of switching from the folded state to the flattened state, the second arc surface stops at the bending portion to guide the bending portion to bend into a preset shape.

2. The foldable electronic device according to claim 1, characterized in that: The foldable electronic device further comprises: a first pressing member, the first pressing member being connected to the first shell, the first pressing member having a third arcuate surface, and in the process of switching from the folded state to the flattened state, the third arcuate surface abuts against the bent portion to guide the bent portion to bend into the preset shape; and / or The second pressing member is connected to the second shell, and the second pressing member has a fourth arcuate surface. During the process of switching from the folded state to the flattened state, the arcuate surface of the fourth arcuate surface stops at the bending portion to guide the bending portion to bend into the preset shape.

3. The foldable electronic device according to claim 2, characterized in that: In the flattened state, the housing assembly has a first surface and a second surface disposed opposite to each other, and one of the first surface and the second surface is used to support the flexible screen; wherein: The bending portion includes a first convex portion, a second convex portion and a third convex portion arranged in sequence, the second convex portion is convexly arranged toward the first surface, the first convex portion and the third convex portion are both convexly arranged away from the first surface, the first arcuate surface stops at a portion of the first convex portion close to the second convex portion along a direction toward the first surface, and the third arcuate surface stops at a portion of the third convex portion close to the second convex portion along a direction toward the first surface; and / or The bending portion includes a fourth protrusion, a fifth protrusion and a sixth protrusion arranged in sequence, the fifth protrusion is protruded toward the first surface, the fourth protrusion and the sixth protrusion are both protruded away from the first surface, the second arcuate surface stops at a portion of the fourth protrusion close to the fifth protrusion along the direction toward the first surface, and the fourth arcuate surface stops at a portion of the sixth protrusion close to the fifth protrusion along the direction toward the first surface.

4. The foldable electronic device according to claim 3, characterized in that: The first shell further has a fifth arcuate surface, and during the switching process between the flattened state and the folded state, a portion of the third convex portion close to the second convex portion is clamped between the third arcuate surface and the fifth arcuate surface; and / or The second shell further has a sixth arcuate surface, and during the switching process between the flattened state and the folded state, a portion of the sixth protrusion close to the fifth protrusion is clamped between the fourth arcuate surface and the sixth arcuate surface.

5. The foldable electronic device according to claim 4, characterized in that: At least one of the third arcuate surface and the fifth arcuate surface is a convex arcuate surface convexly arranged toward the bending portion; and / or At least one of the fourth arcuate surface and the sixth arcuate surface is a convex arcuate surface protruding toward the bending portion.

6. The foldable electronic device according to claim 4, characterized in that: The radius of curvature of the first arcuate surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the third arcuate surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the fifth arcuate surface is greater than or equal to 1 mm; and / or The radius of curvature of the second arcuate surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the fourth arcuate surface is greater than or equal to 0.5 mm, and / or the radius of curvature of the sixth arcuate surface is greater than or equal to 1 mm.

7. The foldable electronic device according to claim 1, characterized in that: The first arc-shaped surface is a convex arc surface convexly arranged toward the bending portion; and / or The second arc surface is a convex arc surface protruding toward the bending portion.

8. The foldable electronic device according to any one of claims 1 to 7, characterized in that: In the flattened state, the ratio of the radius of curvature of any point in the bending portion to the thickness of the bending portion is greater than or equal to 5.

9. The foldable electronic device according to claim 2, characterized in that: The first shell has a first through hole for the bent portion to pass through, a portion of the first pressing member is disposed outside the first through hole and connected to the first shell, another portion of the first pressing member is disposed in the first through hole and adapted to the first through hole, and the third arc-shaped surface is disposed at a portion of the first pressing member located in the first through hole; The second shell has a second through-hole for the bending portion to pass through, a portion of the second clamping member is arranged outside the second through-hole and connected to the second shell, another portion of the second clamping member is arranged in the second through-hole and adapted to the second through-hole, and the fourth arcuate surface is arranged on the portion of the second clamping member located in the second through-hole.

10. The foldable electronic device according to claim 9, characterized in that: The first pressing member comprises a first rigid portion and a first elastic portion connected to each other, the first rigid portion is connected to the first shell, and the first elastic portion is interference fit with the hole wall of the first through hole; and / or The second pressing member includes a second rigid portion and a second elastic portion connected to each other, the second rigid portion is connected to the second shell, and the second elastic portion is interference fit with the hole wall of the second through hole.

11. The foldable electronic device according to claim 10, characterized in that: The third arc-shaped surface is provided on the first elastic portion; and / or The fourth arc surface is provided on the second elastic portion.

12. The foldable electronic device according to claim 10, characterized in that: The first elastic part includes a first main body and a first limiting rib, the first main body is connected to the first rigid part, the first limiting rib is arranged around the first main body, and the first limiting rib is interference fit with the hole wall of the first through hole; and / or The second elastic portion includes a second main body portion and a second limiting rib, the second main body portion is connected to the second rigid portion, the second limiting rib is arranged around the second main body portion, and the second limiting rib is interference fit with the hole wall of the second through hole.

13. The foldable electronic device according to claim 11, characterized in that: The first rigid portion includes a first connecting portion and a first supporting portion, the first connecting portion is connected to the first shell, at least a portion of the first supporting portion extends into the first through hole, and at least a portion of the first supporting portion is embedded in the first elastic portion; and / or The second rigid portion includes a second connecting portion and a second supporting portion, the second connecting portion is connected to the second shell, at least a portion of the second supporting portion extends into the second through hole, and at least a portion of the second supporting portion is embedded in the second elastic portion.

14. The foldable electronic device according to claim 10, characterized in that: The first through hole is a long strip hole, the first shell is provided with a plurality of first positioning portions, the plurality of first positioning portions are arranged at intervals along the length direction of the first through hole, the first pressing member is provided with a plurality of second positioning portions, the second positioning portions correspond to the first positioning portions one by one, and each second positioning portion is positioned and matched with the corresponding first positioning portion; and / or The second through-hole is an elongated hole, the second shell is provided with a plurality of third positioning portions, the plurality of third positioning portions are arranged at intervals along the length direction of the second through-hole, the second clamping member is provided with a plurality of fourth positioning portions, the fourth positioning portions correspond one-to-one to the third positioning portions, and each fourth positioning portion is positioned and matched with the corresponding third positioning portion.

15. The foldable electronic device according to claim 14, characterized in that: The first positioning portion is a first positioning column, the first positioning column is cylindrical, the second positioning portion is a first positioning hole, a part of the first positioning holes is a circular hole, and another part of the first positioning holes is a long strip hole; and / or The third positioning portion is a second positioning column, the second positioning column is cylindrical, the fourth positioning portion is a second positioning hole, a part of the second positioning hole is a circular hole, and another part of the second positioning hole is an elongated hole.

16. The foldable electronic device according to claim 9, characterized in that: The first pressing member is detachably connected to the first housing; and / or The second pressing member is detachably connected to the second shell.

17. The foldable electronic device according to claim 9, characterized in that: The first through hole is a long strip hole, the first shell includes a first part and a second part arranged opposite to each other along the width direction of the first through hole, a part of the first pressing member is connected to the first part, and a first stopper is provided on a side of the second part away from the bending part, and the first stopper is used to stop the first pressing member; and / or The second through-hole is an elongated hole, and the second shell includes a third part and a fourth part which are arranged relatively to each other along the width direction of the second through-hole, a part of the second clamping member is connected to the third part, and a second stopping part is provided on a side of the fourth part away from the bending part, and the second stopping part is used to stop the second clamping member.

18. A foldable electronic device, characterized in that: include: Rotating shaft; A housing assembly, the housing assembly comprising a first housing and a second housing, wherein the first housing and the second housing are rotatably connected to two sides of the rotating shaft, respectively, so that the foldable electronic device can be switched between a flattened state and a folded state; A flexible circuit board, the flexible circuit board comprising a multi-layer circuit board body arranged in a stacked manner; Wherein, the first shell has a first mounting portion, the flexible circuit board includes a first fixing portion and a bendable bending portion arranged in sequence, the first fixing portion is connected to the first mounting portion, the first fixing portion includes a first bonding portion and a first non-bonding portion, two adjacent layers of the circuit board body are bonded at the first bonding portion, and two adjacent layers of the circuit board body can move relative to each other at the first non-bonding portion; and / or The second shell has a second mounting portion, the flexible circuit board includes a bendable bending portion and a second fixed portion arranged in sequence, the second fixed portion is connected to the second mounting portion, the second fixed portion includes a second adhesive portion and a second non-adhesive portion, two adjacent layers of the circuit board body are bonded at the second adhesive portion, and two adjacent layers of the circuit board body can move relative to each other at the second non-adhesive portion.

19. The foldable electronic device according to claim 18, characterized in that: The first adhesive portion is connected to the first mounting portion, and the first non-adhesive portion and the first mounting portion are movable relative to each other; and / or The second adhesive portion is connected to the second mounting portion, and the second non-adhesive portion and the second mounting portion are movable relative to each other.

20. The foldable electronic device according to claim 18, characterized in that: The foldable electronic device further comprises: a first fixing frame, the first fixing frame being connected to the first fixing portion, the first fixing frame comprising a third adhesive portion and a third non-adhesive portion, the third adhesive portion being arranged corresponding to the first adhesive portion and being bonded to the first adhesive portion, and the third non-adhesive portion being arranged corresponding to the first non-adhesive portion and being movable relative to the first non-adhesive portion; and / or a second fixing frame, the second fixing frame being connected to the second fixing portion, The second fixing frame includes a fourth adhesive portion and a fourth non-adhesive portion, the fourth adhesive portion is arranged corresponding to the second adhesive portion and is bonded to the second adhesive portion, and the fourth non-adhesive portion is arranged corresponding to the second non-adhesive portion and can move relative to the second non-adhesive portion.

21. The foldable electronic device according to claim 20, characterized in that: The first fixing portion is in a long strip shape, and the first bonding portion is arranged on both sides of the first non-bonding portion in the length direction of the first fixing portion; and / or The second fixing portion is in a long strip shape, and the second adhesive portion is arranged on both sides of the second non-adhesive portion in a length direction of the second fixing portion.

22. The foldable electronic device according to claim 21, characterized in that: The first fixing portion comprises a first protruding portion protruding from the bending portion in the length direction thereof, and the first protruding portion forms the first bonding portion; and / or The second fixing portion includes a second protruding portion that is arranged to protrude from the bending portion in the length direction of the second fixing portion, and the second protruding portion forms the second bonding portion.

23. The foldable electronic device according to claim 22, characterized in that: The width of the third adhesive portion is greater than the width of the third non-adhesive portion; and / or The width of the fourth adhesive portion is greater than the width of the fourth non-adhesive portion.

24. The foldable electronic device according to claim 23, characterized in that: The third non-adhesive portion is disposed toward a side of the third adhesive portion away from the bending portion; and / or The fourth non-adhesive portion is disposed toward a side of the fourth adhesive portion away from the bending portion.

25. The foldable electronic device according to claim 24, characterized in that: The first fixing frame is U-shaped; and / or The second fixing frame is U-shaped.

26. The foldable electronic device according to claim 22, characterized in that: The flexible circuit board further comprises an electrical connection portion for connecting to a printed circuit board, wherein the electrical connection portion and one of the third adhesive portions are arranged on the same side of the third non-adhesive portion in the length direction of the first fixing portion; In the length direction of the first fixing portion, a size of the third adhesive portion disposed adjacent to the electrical connecting portion is larger than a size of the third adhesive portion disposed away from the electrical connecting portion.

27. The foldable electronic device according to claim 21, characterized in that: The first mounting portion has a plurality of first limiting portions, the third bonding portion has a second limiting portion, the second limiting portions correspond to the first limiting portions one by one, and each second limiting portion is positioned and matched with the corresponding first limiting portion; and / or The second mounting portion has a plurality of third limiting portions, the fourth bonding portion has a fourth limiting portion, the fourth limiting portions correspond to the third limiting portions one by one, and each of the fourth limiting portions is positioned and matched with the corresponding third limiting portion.

28. The foldable electronic device according to claim 27, characterized in that: The first limiting portion is a limiting column, and the second limiting portion is a limiting groove or a limiting hole; and / or The third limiting portion is a limiting column, and the fourth limiting portion is a limiting groove or a limiting hole.

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