Folding electronic device

Abstract

The present disclosure provides a foldable electronic device, which includes a central base, a pivot module, two wing members, two transmission members, a panel body, a water droplet plate, a connecting member, at least one pushing block, a synchronization module, an elastic module, and a flexible screen. The pivot module is arranged on the central base, and the wing members are pivoted relative to the central base. The transmission members are connected to the pivot module, the synchronization module, and the elastic module. The panel body is connected to the wing members. The water droplet plate is connected to the panel body. The connecting member is connected to the transmission members and the water droplet plate. The pushing block is arranged on the central base and pushes the wing members. The synchronization module drives the transmission members to be synchronously reversed. The flexible screen is arranged on the central base, the panel body, and the water droplet plate, and includes a bendable area.

Description

Technical Field

[0001] This disclosure provides a foldable electronic device, and more particularly a foldable electronic device with a flexible screen. Background Technology

[0002] Flexible screens are widely used in smartphones and tablets, typically supported by a linkage structure. Besides providing support, the linkage structure also provides the necessary space for the bendable area of ​​the screen, for example, by using corresponding curved sliders and curved rails to control the size and angle of the bendable area. However, in existing linkage structures, gaps remain between the curved sliders and curved rails during folding. These gaps can easily cause the curved sliders to detach from the curved rails after folding, becoming stuck outside the rails and preventing the linkage structure from reverting to its original position. Summary of the Invention

[0003] This disclosure provides a foldable electronic device, comprising: a central base including a body portion, a track portion, at least one first inner arc-shaped slider and at least one second inner arc-shaped slider, the track portion extending outward from the body portion, the first inner arc-shaped slider and the second inner arc-shaped slider being formed on the body portion at intervals from each other; a pivot module disposed on the central base and including a first shaft and a second shaft respectively pivotally connected to the body portion; a first wing member including at least one first inner arc-shaped slide rail and a first pivot portion, the first inner arc-shaped slider sliding on the first inner arc-shaped slide rail, thereby the first wing member being pivotable relative to the body portion about a first inner virtual axis; and a first transmission member sleeved on the first shaft and including at least A first arc-shaped slider; a first panel body including a first support member having a first pivot portion and a first straight groove, the first pivot portion being pivotally connected to the first pivot portion and jointly defining a first outer virtual axis, thereby enabling the first support member to rotate relative to the first wing member about the first outer virtual axis, and the first transmission member slidingly disposed in the first straight groove, thereby enabling the first support member to slide linearly relative to the first transmission member; a first teardrop plate pivotally supported on the first support member; a first connector pivotally connected to the first teardrop plate and including at least one first arc-shaped groove for the first arc-shaped slider to slide in; a second wing member including at least one second inner arc-shaped slide and a second pivot portion, the second inner arc-shaped slider sliding in the second inner arc-shaped groove. The system includes: a slide rail, through which the second wing member can pivot relative to the main body about a second inner virtual axis; a second transmission member, sleeved on the second shaft, and including at least one second arc-shaped slider; a second panel body, including a second support member having a second pivot portion and a second straight slide groove, the second pivot portion being pivotally connected to the second pivot portion and jointly defining a second outer virtual axis, thereby allowing the second support member to rotate relative to the second wing member about the second outer virtual axis; the second transmission member sliding in the second straight slide groove, thereby allowing the second support member to slide linearly relative to the second transmission member; a second water droplet plate, pivotally supported on the second support member; and a second connecting member, pivotally connected to the second water droplet plate and including at least one [missing information - likely a device or component] for the second arc-shaped slider to slide on. A second arc-shaped slide groove; at least one pushing block, disposed on the main body and spaced apart from the first inner arc-shaped slider and the second inner arc-shaped slider, and contacting and pushing the first wing and the second wing toward the first inner arc-shaped slider and the second inner arc-shaped slider respectively; a synchronization module, including a synchronization slider body slidably disposed between the first transmission member and the second transmission member, and the first transmission member and the second transmission member are respectively connected to the synchronization slider body, and the synchronization slider body can drive the first transmission member and the second transmission member to rotate synchronously in opposite directions when sliding; an elastic module, including a pushing member, the pushing member being slidably sleeved on the first shaft and the second shaft, and movably engaging with the first transmission member and the second transmission member;A flexible screen is disposed on the first panel body, the second panel body, the first water droplet plate, the second water droplet plate, and the central base, and includes a bendable area; wherein the first panel body and the second panel body can switch between an unfolded state and a folded state. When the first panel body and the second panel body are in the unfolded state, the flexible screen is flat, and the first water droplet plate, the second water droplet plate, and the central base jointly support the bendable area. When the first panel body and the second panel body are in the folded state, the bendable area of ​​the flexible screen flexes, and the first water droplet plate, the second water droplet plate, and the central base jointly define an accommodating space to accommodate the bendable area, and the first wing and the second wing will not detach from the first inner arc-shaped slider and the second inner arc-shaped slider by being pushed by the pushing block.

[0004] As described above in the foldable electronic device, the push block includes a main block, a first extension and a second extension. The main block is located between the first wing and the second wing. The first extension and the second extension are respectively bent outward from opposite sides of the main block. The first extension is located between the first wing and the central base, and the second extension is located between the second wing and the central base.

[0005] As described above in the foldable electronic device, the first wing further includes at least one first inner arcuate protrusion surrounding the first inner arcuate slide, and the second wing further includes at least one second inner arcuate protrusion surrounding the second inner arcuate slide. The first extension and the second extension respectively abut against and push the first inner arcuate protrusion and the second inner arcuate protrusion, so that the first wing and the second wing respectively move closer to the first inner arcuate slider and the second inner arcuate slider. The pushing block is made of an elastic material.

[0006] As described above in the foldable electronic device, the first water droplet plate includes a first outer arc-shaped slider and a first top rod. The first support member also has a first outer arc-shaped slide, in which the first outer arc-shaped slider slides. The first connector also includes a first rotating shaft, in which the first top rod passes. The second water droplet plate includes a second outer arc-shaped slider and a second top rod. The second support member also has a second outer arc-shaped slide, in which the second outer arc-shaped slider slides. The second connector also includes a second rotating shaft, in which the second top rod passes. The central base also includes a locking block. The shapes of the main block, the first extension, and the second extension of the pushing block match the shapes of the locking block, so that the pushing block locks into the locking block.

[0007] As described above in the foldable electronic device, the first shaft extends along a first axis, the first straight slide groove is substantially perpendicular to the first axis, the first transmission member further includes a first bending plate and a first straight slider, the first bending plate is bent in the radial direction of the first axis, the first straight slider extends outward from the first bending plate in the radial direction of the first axis and slides in the first straight slide groove, and a first intermediate arc-shaped slider is formed in the first straight slider. The second shaft extends along a second axis, the second straight slide groove is substantially perpendicular to the second axis, the second transmission member further includes a second bending plate and a second straight slider, the second bending plate is bent in the radial direction of the second axis, the second straight slider extends outward from the second bending plate in the radial direction of the second axis and slides in the second straight slide groove, and a second intermediate arc-shaped slider is formed in the second straight slider.

[0008] The aforementioned foldable electronic device further includes a first spring and a second spring. The first spring is engaged with the first straight slider and is located away from the first bending plate. The second spring is engaged with the second straight slider and is located away from the second bending plate. The first support member also has a first rib, and the second support member also has a second rib. When the first panel body and the second panel body are in the unfolded state, the first spring abuts against the first rib, and the second spring abuts against the second rib. During the process of the first panel body and the second panel body changing from the unfolded state to the folded state, the first spring is compressed by the first rib and moves past and gradually away from the first rib. The second spring is compressed by the second rib and moves past and gradually away from the second rib.

[0009] As described above in the foldable electronic device, the first transmission member further includes a first active cam, the second transmission member further includes a second active cam, the pusher has a first driven cam and a second driven cam, the first active cam is slidably sleeved on the first shaft along the first axis and connected to the first bending plate, and cooperates with the first driven cam, the second active cam is slidably sleeved on the second shaft along the second axis and connected to the second bending plate, and cooperates with the second driven cam.

[0010] As described above, in the foldable electronic device, the pivot module includes a mounting base, a first shaft hole, and a second shaft hole. The mounting base has a first wing and a second wing. The first shaft hole is formed through the first wing along the first axis, and the first shaft passes through the first shaft hole. The second shaft hole is formed through the second wing along the second axis, and the second shaft passes through the second shaft hole.

[0011] As described above in the foldable electronic device, the first driven cam is sleeved on the first shaft, and the second driven cam is sleeved on the second shaft. The first driving cam and the first driven cam mesh with each other, and the second driving cam and the second driven cam mesh with each other. The elastic module also includes a first elastic element and a second elastic element, which are respectively sleeved on the first shaft and the second shaft. The two ends of the first elastic element abut against the first wing and the first driven cam, and the two ends of the second elastic element abut against the second wing and the second driven cam, respectively. When the first panel body and the second panel body are in a half-open state between the unfolded state and the folded state, the first driving cam and the second driving cam abut against the first driven cam and the second driven cam, thereby compressing the first elastic element and the second elastic element. When the first support member and the second support member are in the unfolded state or the folded state, the first elastic element and the second elastic element are released accordingly.

[0012] As described above in the foldable electronic device, the first axis, the first inner virtual axis, the first outer virtual axis, the second axis, the second inner virtual axis, and the second outer virtual axis are parallel.

[0013] As described above in the foldable electronic device, the synchronization module further includes a first spiral bump, a second spiral bump, a first spiral groove and a second spiral groove, wherein the first spiral bump is matchedly received in the first spiral groove and the second spiral bump is matchedly received in the second spiral groove.

[0014] As described above in the foldable electronic device, the first spiral groove is recessed in the first transmission member along a first spiral direction, the second spiral groove is recessed in the second transmission member along a second spiral direction and corresponds to the first spiral groove, and the first spiral protrusion and the second spiral protrusion are respectively formed on opposite sides of the synchronous slider body.

[0015] As in the aforementioned foldable electronic device, the first spiral direction is opposite to the second spiral direction.

[0016] As described above, the central base also includes a housing that covers the main body. When the first panel body and the second panel body are in the unfolded state, the first water drop plate and the second water drop plate contact the top side of the housing. When the first panel body and the second panel body are in the folded state, the first water drop plate and the second water drop plate move away from the housing.

[0017] As described above, the central base of the foldable electronic device also includes a track groove through which the track portion is formed, and the synchronization module also includes a limiting rib formed in the synchronization slider body, the limiting rib being slidably accommodated in the track groove.

[0018] In summary, the foldable electronic device disclosed herein uses the push block to abut against the first and second wings, shortening the gap between the lower edge of the first inner arc-shaped slider and the upper edge of the first inner arc-shaped protrusion, and the gap between the lower edge of the second inner arc-shaped slider and the upper edge of the second inner arc-shaped protrusion. This ensures that when the first and second wings are folded, the first inner arc-shaped slider does not disengage from the first inner arc-shaped slide rail, the first inner arc-shaped protrusion does not disengage from the sliding space between the first inner arc-shaped slider and the first extension, the second inner arc-shaped slider does not disengage from the second inner arc-shaped slide rail, and the second inner arc-shaped protrusion does not disengage from the sliding space between the second inner arc-shaped slider and the second extension. This provides the user with a smooth operating feel during repeated folding. Furthermore, the matching arrangement of the first spring, the first rib, the second spring, and the second rib provides the user with a smooth operating feel during folding. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the foldable electronic device disclosed herein in its unfolded state.

[0020] Figure 2 This is an exploded view of the foldable electronic device disclosed in its unfolded state.

[0021] Figure 3 This is an exploded view of the foldable electronic device disclosed herein.

[0022] Figure 4 This is an exploded view of some components of the foldable electronic device disclosed herein.

[0023] Figure 5 This is an exploded view of some components of the foldable electronic device disclosed herein.

[0024] Figure 6 This is a bottom view of the first droplet plate, the first carrier, the second droplet plate, and the second carrier of the foldable electronic device disclosed herein.

[0025] Figure 7 This is a top view of the first transmission component, the second transmission component, and the synchronization module of the foldable electronic device disclosed herein.

[0026] Figure 8 This is a top view of the first transmission component, the second transmission component, and the elastic module of the foldable electronic device disclosed herein in the unfolded state.

[0027] Figure 9 This is a top view of the first transmission component, the second transmission component, and the elastic module of the foldable electronic device disclosed herein in a half-open state.

[0028] Figure 10This is a top view of the first transmission component, the second transmission component, and the elastic module of the foldable electronic device disclosed herein in the folded state.

[0029] Figure 11 and Figure 12 This is a cross-sectional schematic diagram showing different sections of the foldable electronic device in its unfolded state.

[0030] Figure 13 This is a cross-sectional schematic diagram of the foldable electronic device disclosed herein in a semi-open state.

[0031] Figure 14 and Figure 15 This is a cross-sectional schematic diagram showing different sections of the folded electronic device disclosed herein in its folded state.

[0032] Explanation of main component symbols Detailed Implementation

[0033] Please see Figure 1 , Figure 2 and Figure 3The disclosed foldable electronic device 1000 includes a central base 1, a pivot module 2, a first wing 3, a first transmission component 4, a first panel body 5, a first teardrop plate 6, a first connector 7, a first spring 8, a second wing 9, a second transmission component A, a second panel body B, a second teardrop plate C, a second connector D, a second spring E, two push blocks F, a synchronization module G, an elastic module H, and a flexible screen I. The pivot module 2 is located on the central base 1. The first wing 3 and the second wing 9 are pivotally connected to both sides of the central base 1. The first transmission component 4 and the second transmission component A are respectively connected to the pivot module 2 and the synchronization module G and the elastic module H on both sides. The first panel body 5 is connected to the first wing 9. A wing 3, a first water droplet plate 6 connected to a first panel body 5, a first connector 7 connected to a first transmission component 4 and a first water droplet plate 6, a first spring plate 8 disposed on the first transmission component 4, a second panel body B connected to a second wing 9, a second water droplet plate C connected to a second panel body B, a second connector D connected to a second transmission component A and a second water droplet plate C, a second spring plate E disposed on the second transmission component A, push blocks F are disposed at intervals on a central base 1, a synchronization module G is disposed on a central base 1 and can slide between the first transmission component 4 and the second transmission component A, an elastic module H is disposed on a central base 1 and connected to a pivot module 2, and a flexible screen I is disposed on a central base 1, a first panel body 5, a first water droplet plate 6, a second panel body B and a second water droplet plate C. The structure of each component and their interconnections will be described in detail below. Some diagrams show a first inner virtual axis V1, a second inner virtual axis V2, a first outer virtual axis V3, a second outer virtual axis V4, a first axis X1, and a second axis X2 that are parallel to each other. Some components of the disclosed foldable electronic device 1000 can be in one or more groups, all of which can achieve similar actuation effects. For the sake of simplicity, only one group is shown as an example below, and some diagrams only show one group.

[0034] Please refer to the following: Figure 4 and Figure 5 The central base 1 includes a body portion 11, a track portion 12, two first inner arc-shaped sliders 13, two second inner arc-shaped sliders 14, a track groove 15, a locking block 16, and a housing 17. The body portion 11 has two spaced recesses 111 and two limiting blocks 112. The recesses 111 are formed along a first axis X1 and a second axis X2, respectively. The limiting blocks 112 are generally square plates and are adjacent to the recesses 111. The track portion 12 is generally a long plate extending outward from the body portion 11. The first inner arc-shaped sliders 13 are generally semi-arc-shaped, protruding from the body portion 11 at intervals and opposite to each other, adjacent to one side of the body portion 11 (i.e., adjacent to the first panel body 5), and their common axis is defined as the first inner virtual axis V1. Figure 11The second inner arc-shaped slider 14 is generally semi-arc-shaped, protruding from the body portion 11 at intervals and opposite to each other, spaced apart from the first inner arc-shaped slider 13, and adjacent to the other side of the body portion 11 (i.e., adjacent to the second panel body B), and their common axis is defined as the second inner virtual axis V2. Figure 11 A track groove 15 is formed through the track portion 12 and extends parallel to either the first axis X1 or the second axis X2. A locking block 16 is fixed to the body portion 11 and located between the first inner arc-shaped slider 13 and the second inner arc-shaped slider 14, and is spaced apart from both the first inner arc-shaped slider 13 and the second inner arc-shaped slider 14. A housing 17 covers the bottom and front sides of the body portion 11.

[0035] The pivot module 2 includes a first shaft 21, a second shaft 22, a fixing base 23, a first shaft hole 24, a second shaft hole 25, a first nut 26, and a second nut 27. The first shaft 21 extends along a first axis X1 and has a first head 211, a first limiting part 212, and a first rod part 213 connected in sequence. The first head 211 is pivotally connected to one of the recesses 111, and the first limiting part 212 abuts against and is limited by one of the limiting blocks 112, so that the first shaft 21 cannot rotate on its own along the first axis X1. The second shaft 22 extends along a second axis X2 and has a second head 221, a second limiting part 222, and a second rod part 223 connected in sequence. The second head 221 is pivotally connected to one of the recesses 111, and the second limiting part 222 abuts against and is limited by one of the limiting blocks 112, preventing the second shaft 22 from rotating along the second axis X2. The fixing seat 23 has a body 231, a first wing 232, a second wing 233, and a positioning tenon 234. The seat body 231 is disposed on the track part 12 and exposed in the track groove 15, and is spaced apart from the body part 11. The first wing 232 and the second wing 233 extend outward from opposite sides of the seat body 231. The positioning tenon 234 is disposed on the seat body 231 and located between the first wing 232 and the second wing 233. The first shaft hole 24 is provided in the first wing 232 along the first axis X1 for the first rod part 213 to pass through for pivoting. The second shaft hole 25 is provided in the second wing 233 along the second axis X2 for the second rod part 223 to pass through for pivoting. The first nut 26 is screwed into the first rod portion 213 at one end away from the first limiting portion 212, and the second nut 27 is screwed into the second rod portion 223 at one end away from the second limiting portion 222.

[0036] The first wing member 3 includes a first wing body 31, two first inner arc-shaped slides 32, a first pivot portion 33, and two first inner arc-shaped protrusions 34. The first wing body 31 is a bent cuboid. The first inner arc-shaped protrusions 34 extend outward from both sides of the first wing body 31 and are adjacent to the body portion 11. The first inner arc-shaped slides 32 are respectively defined by the first wing body 31 and the first inner arc-shaped protrusions 34, and are respectively provided for the corresponding sliding of the first inner arc-shaped sliders 13, thereby enabling the first wing member 3 to pivot relative to the body portion 11 about the first inner virtual axis V1. The first pivot portion 33 is provided in the first wing body 31 on the side away from the body portion 11, and has a first pivot hole 331 extending along the first outer virtual axis V3 and a first pivot rod 332 passing through the first pivot hole 331.

[0037] The first transmission component 4 includes a first drive cam 41, a first bent plate 42, a first straight slider 43, and two first intermediate arc-shaped sliders 44. The first drive cam 41 is an end-face cam and has three first main protrusions 411, three first main concave portions 412, and a first main through hole 413. The first main protrusions 411 and the first main concave portions 412 extend outward along the first axis X1 and are staggered around each other. The first main through hole 413 is formed through the first axis X1 and allows the first rod portion 213 to pass through. The first bent plate 42 extends outward from the first drive cam 41 in the radial direction along the first axis X1. The first straight slider 43 extends outward from the first bent plate 42 in the radial direction along the first axis X1. The first intermediate arc-shaped sliders 44 are formed alternately on the first straight slider 43.

[0038] Please see Figure 6 The first panel body 5 includes a first support member 51 and a first panel housing 52. The first support member 51 has a first support body 511, a first pivot portion 512, a first straight slide groove 513, a first outer arc-shaped slide rail 514, and a first protruding rib 515. The first pivot portion 512 extends outward from the first support body 511 and is pivotally connected to a first pivot rod 332, thereby jointly defining a first outer virtual axis V3. Figure 11 The first support member 51 can rotate relative to the first wing member 3 about the first outer virtual axis V3. The first straight slide groove 513 is defined by the first support body 511, roughly perpendicular to the first axis X1, and allows the first straight slider 43 to slide linearly, thereby enabling the first support member 51 to move linearly relative to the first transmission member 4. The first outer arc-shaped slide rail 514 is formed in the first support body 511 and spaced apart from the first pivot portion 512. The first protruding rib 515 extends parallel to the first axis X1 and is formed in the first support body 511, adjacent to the first straight slide groove 513. The first panel housing 52 is generally square and fixed to the first support member 51. In addition, the first panel body 5 also contains electronic components, but these are not related to the folding operation and will not be described in detail.

[0039] The first water droplet plate 6 includes a first plate body 61, a first outer arc-shaped slider 62, a first fixing member 63, and a first push rod 64. The first plate body 61 is generally rectangular. The first outer arc-shaped slider 62 is located at one corner of the first plate body 61 and slides on the first outer arc-shaped slide rail 514, so that the first water droplet plate 6 can be pivotally supported on the first supporting member 51. The first fixing member 63 is fixed to the bottom surface of the first plate body 61 and has a first through hole 631. The first push rod 64 passes through the first through hole 631, and the opposite ends of the first push rod 64 are exposed outside the first fixing member 63.

[0040] The first connecting member 7 includes a first connecting body 71, a first rotating shaft 72, and two first arc-shaped sliding grooves 73. The first connecting body 71 is generally arc-shaped. The first rotating shaft 72 is located on one side of the first connecting body 71 and has two first through holes 721. The first push rod 64 passes through the first through holes 721 of the first rotating shaft 72, allowing the first connecting body 71 to pivot relative to the first water drop plate 6. The first arc-shaped sliding grooves 73 are recessed at intervals on opposite sides of the first connecting body 71, and the first arc-shaped sliders 44 are respectively slidably disposed in the first arc-shaped sliding grooves 73.

[0041] The first spring clip 8 includes a first sheet 81 and a first bent body 82. The first sheet 81 is generally U-shaped and is snapped into the first straight slider 43 at one end away from the first bent plate 42. The first bent body 82 generally has a V-shaped cross section and is formed by bending outward from the first sheet 81.

[0042] The second wing member 9 includes a second wing body 91, two second inner arc-shaped slides 92, a second pivot portion 93, and two second inner arc-shaped protrusions 94. The second wing body 91 is a bent cuboid. The second inner arc-shaped protrusions 94 extend outward from both sides of the second wing body 91 and are adjacent to the body portion 11. The second inner arc-shaped slides 92 are defined by the second wing body 91 and the second inner arc-shaped protrusions 94, and are respectively slidably provided for the second inner arc-shaped sliders 14, thereby enabling the second wing member 9 to pivot relative to the body portion 11 about the second inner virtual axis V2. The second pivot portion 93 is provided on the side of the second wing body 91 away from the body portion 11, and has a second pivot hole 931 extending along the second outer virtual axis V4 and a second pivot rod 932 passing through the second pivot hole 931.

[0043] The second transmission component A includes a second driving cam A1, a second bent plate A2, a second straight slider A3, and two second intermediate arc-shaped sliders A4. The second driving cam A1 is an end-face cam and has three second main convex portions A11, three second main concave portions A12, and a second main through hole A13. The second main convex portions A11 and the second main concave portions A12 extend outward along the second axis X2 and are staggered around each other. The second main through hole A13 is formed through the second axis X2 and allows the second rod portion 223 to pass through. The second bent plate A2 extends outward from the second driving cam A1 in the radial direction along the second axis X2. The second straight slider A3 extends outward from the second bent plate A2 in the radial direction along the second axis X2. The second intermediate arc-shaped sliders A4 are formed spaced apart from each other on the second straight slider A3.

[0044] The second panel body B includes a second support member B1 and a second panel housing B2. The second support member B1 has a second support body B11, a second pivot portion B12, a second straight slide groove B13, a second outer arc-shaped slide rail B14, and a second protruding rib B15. The second pivot portion B12 extends outward from the second support body B11 and is pivotally connected to a second pivot rod 932, thereby jointly defining the second outer virtual axis V4. Figure 11 The second support member B1 can rotate relative to the second wing member 9 about the second outer virtual axis V4. The second straight slide groove B13 is defined by the second support body B11, roughly perpendicular to the second axis X2, and allows the second straight slider A3 to slide linearly, thereby enabling the second support member B1 to move linearly relative to the second transmission member A. The second outer arc-shaped slide rail B14 is formed on the second support body B11 and spaced apart from the second pivot part B12. The second rib B15 is formed parallel to the second axis X2 on the second support body B11 and adjacent to the second straight slide groove B13. The second panel housing B2 is generally square-shaped, fixed to the second support member B1, and coplanar with the first support member 51. In addition, the second panel body B also contains electronic components, which will not be described in detail here.

[0045] The second water droplet plate C includes a second plate body C1, a second outer arc-shaped slider C2, a second fixing member C3, and a second push rod C4. The second plate body C1 is generally rectangular. The second outer arc-shaped slider C2 is located at one corner of the second plate body C1 and slides on the second outer arc-shaped slide rail B14, allowing the second water droplet plate C to be pivotally supported on the second supporting member B1. The second fixing member C3 is fixed to the bottom surface of the second plate body C1 and has a second through hole C31. The second push rod C4 passes through the second through hole C31, and the opposite ends of the second push rod C4 are exposed outside the second fixing member C3.

[0046] The second connector D includes a second connector D1, a second pivot D2, and two second arc-shaped grooves D3. The second connector D1 is generally arc-shaped. The second pivot D2 is located on one side of the second connector D1 and has two second through holes D21. The second push rod C4 passes through the second through holes D21 of the second pivot D2, allowing the second connector D1 to pivot relative to the second water droplet plate C. The second arc-shaped grooves D3 are recessed at intervals on opposite sides of the second connector D1, and the second arc-shaped sliders A4 are respectively slidably disposed in the second arc-shaped grooves D3.

[0047] The second spring piece E comprises a second sheet body E1 and a second bent body E2. The second sheet body E1 is roughly U-shaped and is snapped into the second straight slider A3 at one end away from the second bent plate A2. The second bent body E2 has roughly a V-shaped cross section and is formed by bending outward from the second sheet body E1.

[0048] The pushing blocks F are spaced apart on the main body 11 and each has a main block F1, a first extension F2, and a second extension F3. The main block F1 is located between the first wing 3 and the second wing 9. The first extension F2 and the second extension F3 bend outward from both sides of the main block F1. The first extension F2 is located between the main body 11 and the first inner arc-shaped protrusion 34, abutting against and pushing the first inner arc-shaped protrusion 34, causing the first inner arc-shaped protrusion 34 to move closer to the first inner arc-shaped slider 13, reducing the gap between the first inner arc-shaped protrusion 34 and the first inner arc-shaped slider 13, and forming a sliding space between the first inner arc-shaped slider 13 and the first extension F2 for the first inner arc-shaped protrusion 34 to slide. The second extension F3 is located between the main body 11 and the second inner arc-shaped protrusion 94, abutting against and pushing the second inner arc-shaped protrusion 94, causing the second inner arc-shaped protrusion 94 to move closer to the second inner arc-shaped slider 14, reducing the gap between the second inner arc-shaped protrusion 94 and the second inner arc-shaped slider 14, and forming a sliding space between the second inner arc-shaped slider 14 and the second extension F3 for the second inner arc-shaped protrusion 94 to slide. The shapes of the main body F1, the first extension F2, and the second extension F3 are matched with the shape of the engaging block 16, so that the pushing block F engages with the engaging block 16. In this embodiment, the pushing block F is made of an elastic material, such as plastic.

[0049] Please also refer to Figure 7The synchronization module G includes a synchronization slider G1, a limiting rib G2, a first helical protrusion G3, a second helical protrusion G4, a first helical groove G5, and a second helical groove G6. The synchronization slider G1 is slidably disposed between the first transmission member 4 and the second transmission member A, and on the track portion 12, and is connected to the first transmission member 4 and the second transmission member A. The limiting rib G2 extends outward from the bottom surface of the synchronization slider G1 and is slidably accommodated in the track groove 15, thereby allowing the synchronization slider G1 to move along the track groove 15. The first helical protrusion G3 is formed along a first helical direction R1 on one of the two opposite sides of the synchronization slider G1. The second helical protrusion G4 is formed along a second helical direction R2 on the other of the two opposite sides of the synchronization slider G1. The first helical groove G5 is recessed along the first helical direction R1 in the first active cam 41 and is matched to accommodate the first helical protrusion G3. The second helical groove G6 is recessed in the second active cam A1 along the second helical direction R2, and is matched to accommodate the second helical protrusion G4. In this embodiment, the first helical direction R1 and the second helical direction R2 are opposite, but this is not a limitation. In other embodiments, the first helical groove G5 and the second helical groove G6 may also be recessed on opposite sides of the synchronous slider body G1, and the first helical protrusion G3 and the second helical protrusion G4 may also be formed on the first active cam 41 and the second active cam A1, respectively.

[0050] The elastic module H includes a pusher H1, a first elastic element H2, a second elastic element H3, and a third elastic element H4. The pusher H1 is slidably sleeved on the first rod portion 213 and the second rod portion 223, and has a pusher body H11, a first driven cam H12, a second driven cam H13, and a positioning pin H14. The pusher body H11 is generally rectangular, and the first driven cam H12 is an end-face cam that extends outward from one side of the pusher body H11 and is movably engaged with the first driving cam 41. Figures 8 to 10 The cam has three first follower convex portions H121, three first follower concave portions H122, and a first follower through hole H123. The first follower convex portions H121 extend outwards at intervals along the first axis X1, and the first follower concave portions H122 are formed at intervals between any two of the first follower convex portions H121. The first follower through hole H123 is formed through the first axis X1 and allows the first rod portion 213 to pass through. Its cross-sectional area is larger than that of the first rod portion 213 and is circular, thereby allowing the first follower cam H12 to slide along the first axis X1 on the first rod portion 213 but not rotate. The second follower cam H13 is an end-face cam that extends outwards from one side of the pusher body H11 and is movably engaged with the second driving cam A1. Figures 8 to 10The first driven cam H131 has three second driven protrusions H131, three second driven recesses H132, and a second driven through hole H133. The second driven protrusions H131 extend outward at intervals along the second axis X2, and the second driven recesses H132 are formed at intervals between any two second driven protrusions H131. The second driven through hole H133 is formed through the second axis X2 and allows the second rod 223 to pass through. Its cross-sectional area is larger than that of the second rod 223 and is circular, thereby allowing the second driven cam H13 to slide along the second axis X2 on the second rod 223 but not rotate. The positioning pin H14 extends outward from the rear side of the pusher body H11 in a direction parallel to the first axis X1 or the second axis X2. The first elastic member H2 is sleeved on the first rod 213 and its two ends abut against the first wing 232 and the first driven cam H12, respectively. The second elastic element H3 is sleeved on the second rod portion 223, with its two ends abutting against the second wing portion 233 and the second driven cam H13, respectively. The third elastic element H4 is sleeved on the positioning tenon 234 and the positioning post H14 and is located between the first elastic element H2 and the second elastic element H3, with its two ends abutting against the fixing seat 23 and the pushing member H1, respectively. In this embodiment, the first elastic element H2, the second elastic element H3, and the third elastic element H4 are each a compression spring.

[0051] The flexible screen I is disposed on the first panel body 5, the first water drop plate 6, the second panel body B, the second water drop plate C and the central base 1, and includes a bendable area I1, which roughly corresponds to the central base 1, the first wing 3, the first water drop plate 6, the second wing 9 and the second water drop plate C.

[0052] The following describes the operation of the foldable electronic device 1000 disclosed herein. The first panel body 5 and the second panel body B can be in an unfolded state ( Figure 8 , Figure 11 and Figure 12 ) and a folded state ( Figure 10 , Figure 14 and Figure 15 ( ) In the unfolded state, the flexible screen I flattens out, and the first water droplet plate 6, the second water droplet plate C, and the central base 1 jointly support the bendable area I1, with the first water droplet plate 6 and the second water droplet plate C contacting the top side of the outer shell 17. For example... Figure 8As shown (only pivot module 2, first transmission member 4, second transmission member A, and elastic module H are illustrated), at this time, the first driving cam 41 and the first driven cam H12 are matched and engaged, that is, each of the first main cams 411 extends into each of the first driven recesses H122, and respectively, they are locally rubbed against each other, and the sum of the lengths of the first driving cam 41 and the first driven cam H12 on the first axis X1 is minimized. Meanwhile, the second driving cam A1 and the second driven cam H13 are matched and engaged, that is, each of the second main cams A11 extends into each of the second driven recesses H132, and respectively, they are locally rubbed against each other, and the sum of the lengths of the second driving cam A1 and the second driven cam H13 on the second axis X2 is minimized. At the same time, the first elastic member H2, the second elastic member H3, and the third elastic member H4 are correspondingly released (i.e., the compression is minimized). Figure 11 As shown, the first extension F2 abuts against and pushes against all of the first inner arc-shaped protrusions 34, causing the first inner arc-shaped protrusions 34 to approach or adhere to the first inner arc-shaped slider 13; the second extension F3 abuts against and pushes against all of the second inner arc-shaped protrusions 94, causing the second inner arc-shaped protrusions 94 to approach or adhere to the second inner arc-shaped slider 14. Simultaneously, as... Figure 12 As shown, a small portion of the first arc-shaped slider 44 is located in the first arc-shaped groove 73, a small portion of the second arc-shaped slider A4 is located in the second arc-shaped groove D3, the first bent body 82 of the first spring piece 8 abuts against the left side of the first protruding rib 515, and the second bent body E2 of the second spring piece E abuts against the right side of the second protruding rib B15.

[0053] When the first panel body 5 and the second panel body B change from the unfolded state to the folded state, the first wing 3 and the second wing 9 pivot relative to the body part 11 around the first inner virtual axis V1 and the second inner virtual axis V2 respectively and gradually move closer to each other (that is, the first water drop plate 6 and the second water drop plate C gradually change from a coplanar state to an oblique state). At this time, the first support member 51 and the second support member B1 also pivot relative to the first wing 3 and the second wing 9 around the first outer virtual axis V3 and the second outer virtual axis V4 respectively, causing the first straight slider 43 and the second straight slider A3 to slide linearly in the first straight slide groove 513 and the second straight slide groove B13 respectively (gradually sliding away from the first straight slide groove 513 and the second straight slide groove B13). At the same time, the first active cam 41 and the first bending plate 42 pivot around the first axis X1, and the second active cam A1 and the second bending plate A2 pivot around the second axis X2. Because the first spiral direction R1 and the second spiral direction R2 of the first spiral groove G5 and the second spiral groove G6 on both sides of the synchronous slider body G1 are opposite, the first spiral protrusion G3 and the second spiral protrusion G4 slide along the first spiral groove G5 and the second spiral groove G6 respectively, driving the first transmission member 4 and the second transmission member A to synchronously reverse. At the same time, the first connecting member 7 pivots relative to the first water drop plate 6 with the first push rod 64 as the axis, the first arc-shaped slider 44 slides in the first arc-shaped slide groove 73, the first bent body 82 is compressed towards the first straight slider 43 by the pressure of the first protruding rib 515, the second connecting member D pivots relative to the second water drop plate C with the second push rod C4 as the axis, the second arc-shaped slider A4 slides in the second arc-shaped slide groove D3, and the second bent body E2 is compressed towards the second straight slider A3 by the pressure of the second protruding rib B15.

[0054] During the aforementioned transformation process, the first active cam 41 and the second active cam A1 will gradually push open the first driven cam H12 and the second driven cam H13 respectively, and gradually compress the first elastic element H2, the second elastic element H3, and the third elastic element H4 (the compression gradually increases). When the first panel body 5 and the second panel body B are transformed to a half-open state between the unfolded state and the folded state, as... Figure 9As shown, the first active cam 41 and the second active cam A1 are respectively in an opposing state with the first driven cam H12 and the second driven cam H13. That is, each of the first main convex portions 411 corresponds to each of the first driven convex portions H121, each of the first main concave portions 412 corresponds to each of the first driven concave portions H122, each of the second main convex portions A11 corresponds to each of the second driven convex portions H131, and each of the second main concave portions A12 corresponds to each of the second driven concave portions H132. The pusher H1 moves along the first shaft 21 and the second shaft 22 toward the fixed seat 23, thereby compressing the first elastic element H2, the second elastic element H3, and the third elastic element H4 (that is, the compression is at its maximum). At this time, the total length of the first active cam 41 and the first driven cam H12 on the first axis X1 is at its maximum, and the total length of the second active cam A1 and the second driven cam H13 on the second axis X2 is at its maximum. At the same time, as Figure 13 As shown, the first arc-shaped slider 44 is partially increased in the first arc-shaped groove 73, and one end of the first water droplet plate 6 extends from the adjacent first active cam 41 ( Figure 12 ) transform into the adjacent first bending plate 42 ( Figure 13 ), and roughly oblique to the first support member 51 (i.e., the first water drop plate 6 is forced to rotate by an angle), and the second arc-shaped slider A4 is located in the second arc-shaped groove D3, and one end of the second water drop plate C is adjacent to the second active cam A1 ( Figure 12 ) transforms into the adjacent second bending plate A2 ( Figure 13 The first bent body 82, after passing the first rib 515, springs back and then gradually moves away from the right side of the first rib 515. The second bent body E2, after passing the second rib B15, springs back and then gradually moves away from the left side of the second rib B15.

[0055] When the operation continues, the first panel body 5 and the second panel body B are transformed into a folded state, such as... Figure 10As shown, the first driving cam 41 and the first driven cam H12 gradually become mutually engaged, that is, each of the first main cams 411 gradually penetrates into each of the first driven recesses H122, and the side of each of the first main cams 411 contacts the side of each of the first driven cams H121 (becoming contact on opposite sides) and generates friction. The second driving cam A1 and the second driven cam H13 also gradually become mutually engaged, that is, each of the second main cams A11 gradually penetrates into each of the second driven recesses H132, and the side of each of the second main cams A11 contacts the side of each of the second driven cams H131 (becoming contact on opposite sides) and generates friction, causing the first elastic element H2, the second elastic element H3, and the third elastic element H4 to be gradually released (i.e., the compression gradually decreases). Simultaneously, as... Figure 14 As shown, a portion of the first extension F2 still abuts against and pushes the end of the first inner arc-shaped protrusion 34, so that the first inner arc-shaped slider 13 will not disengage from the first inner arc-shaped slide rail 32 (i.e., the first inner arc-shaped protrusion 34 is still slidably disposed in the sliding space between the first inner arc-shaped slider 13 and the first extension F2), and a portion of the second extension F3 still abuts against and pushes the end of all the second inner arc-shaped protrusions 94, so that the second inner arc-shaped slider 14 will not disengage from the second inner arc-shaped slide rail 92 (i.e., the second inner arc-shaped protrusion 94 is still slidably disposed in the sliding space between the second inner arc-shaped slider 14 and the second extension F3). Meanwhile, as Figure 15 As shown, most of the first arc-shaped slider 44 is located in the first arc-shaped groove 73, most of the second arc-shaped slider A4 is located in the second arc-shaped groove D3, the first bent body 82 is also away from the other side of the first protruding rib 515, and the second bent body E2 is also away from the other side of the second protruding rib B15.

[0056] When the screen is switched to the folded state, the sum of the lengths of the first active cam 41 and the first driven cam H12 on the first axis X1 is at its minimum, while the sum of the lengths of the second active cam A1 and the second driven cam H13 on the second axis X2 is at its minimum. The first elastic element H2, the second elastic element H3 and the third elastic element H4 are released, and the first water drop plate 6 and the second water drop plate C are moved away from the top side of the outer shell 17. The first water drop plate 6 and the second water drop plate C are obliquely intersecting the main body 11, and the bendable area I1 of the flexible screen I flexes. The first water drop plate 6, the second water drop plate C and the central base 1 together define an accommodating space S to accommodate the bendable area I1, and the bendable area I1 and the first water drop plate 6 and the second water drop plate C are roughly teardrop-shaped as a whole.

[0057] In summary, the foldable electronic device disclosed herein uses the push block to abut against the first and second wings, shortening the gap between the lower edge of the first inner arc-shaped slider and the upper edge of the first inner arc-shaped protrusion, and the gap between the lower edge of the second inner arc-shaped slider and the upper edge of the second inner arc-shaped protrusion. This ensures that when the first and second wings are folded, the first inner arc-shaped slider does not disengage from the first inner arc-shaped slide rail, the first inner arc-shaped protrusion does not disengage from the sliding space between the first inner arc-shaped slider and the first extension, the second inner arc-shaped slider does not disengage from the second inner arc-shaped slide rail, and the second inner arc-shaped protrusion does not disengage from the sliding space between the second inner arc-shaped slider and the second extension. This provides the user with a smooth, non-jamming operating feel during repeated folding. Furthermore, the matching arrangement of the first spring, the first rib, the second spring, and the second rib provides the user with a smooth, controlled operating feel during folding.

Claims

1. A foldable electronic device, characterized in that, The foldable electronic device includes: A central base includes a body portion, a track portion, at least one first inner arc-shaped slider and at least one second inner arc-shaped slider, the track portion being formed extending outward from the body portion, and the first inner arc-shaped slider and the second inner arc-shaped slider being formed on the body portion at intervals from each other. A pivot module is disposed on the central base and includes a first shaft and a second shaft respectively pivotally connected to the body portion; A first wing member includes at least one first inner arc-shaped slide rail and a first pivot portion. The first inner arc-shaped slide rail is slidably disposed on the first inner arc-shaped slide rail, thereby enabling the first wing member to pivot relative to the main body about a first inner virtual axis. A first transmission component is sleeved on the first shaft and includes at least one first arc-shaped slider; A first panel body includes a first support member, the first support member having a first pivot portion and a first straight slide groove, the first pivot portion being pivotally connected to the first pivot portion and jointly defining a first outer virtual axis, thereby the first support member can rotate relative to the first wing member about the first outer virtual axis, and a first transmission member is slidably disposed in the first straight slide groove, thereby the first support member can slide linearly relative to the first transmission member; A first water droplet plate is pivotally supported by the first support member; A first connector is pivotally connected to the first water droplet plate and includes at least one first arc-shaped sliding groove, wherein the first arc-shaped slider is slidably disposed in the first arc-shaped sliding groove. A second wing member includes at least a second inner arc-shaped slide rail and a second pivot portion. The second inner arc-shaped slide rail is slidably disposed on the second inner arc-shaped slide rail, thereby enabling the second wing member to pivot relative to the main body about a second inner virtual axis. A second transmission component is sleeved on the second shaft and includes at least one second arc-shaped slider; A second panel body includes a second support member, the second support member having a second pivot portion and a second straight slide groove, the second pivot portion being pivotally connected to the second pivot portion and jointly defining a second outer virtual axis, thereby the second support member can rotate relative to the second wing member about the second outer virtual axis, and the second transmission member is slidably disposed in the second straight slide groove, thereby the second support member can slide linearly relative to the second transmission member; A second water droplet plate is pivotally supported by the second support member; A second connector is pivotally connected to the second water droplet plate and includes at least one second arc-shaped sliding groove, wherein the second arc-shaped slider is slidably disposed in the second arc-shaped sliding groove; At least one pushing block is disposed on the main body and spaced apart from the first inner arc-shaped slider and the second inner arc-shaped slider, and contacts and pushes the first wing and the second wing toward the first inner arc-shaped slider and the second inner arc-shaped slider respectively. A synchronization module includes a synchronization slider body slidably disposed between the first transmission member and the second transmission member, and the first transmission member and the second transmission member are respectively connected to the synchronization slider body. When the synchronization slider body slides, it can drive the first transmission member and the second transmission member to rotate synchronously in opposite directions. An elastic module includes a pushing member slidably sleeved on the first shaft and the second shaft, and movably engaged with the first transmission member and the second transmission member; and A flexible screen is disposed on the first panel body, the second panel body, the first water drop plate, the second water drop plate and the central base, and includes a bendable area; The first panel body and the second panel body can switch between an unfolded state and a folded state. When the first panel body and the second panel body are in the unfolded state, the flexible screen is flattened, and the first water drop plate, the second water drop plate and the central base jointly support the bendable area. When the first panel body and the second panel body are in the folded state, the bendable area of ​​the flexible screen flexes, and the first water drop plate, the second water drop plate and the central base jointly define an accommodating space to accommodate the bendable area. The first wing and the second wing will not detach from the first inner arc-shaped slider and the second inner arc-shaped slider by being pushed by the pushing block.

2. The foldable electronic device as claimed in claim 1, characterized in that, The push block includes a main block, a first extension and a second extension. The main block is located between the first wing and the second wing. The first extension and the second extension extend outward from opposite sides of the main block. The first extension is located between the first wing and the central base, and the second extension is located between the second wing and the central base.

3. The foldable electronic device as described in claim 2, characterized in that, The first wing also includes at least one first inner arc-shaped protrusion surrounding the first inner arc-shaped slide rail, and the second wing also includes at least one second inner arc-shaped protrusion surrounding the second inner arc-shaped slide rail. The first extension and the second extension respectively abut against and push the first inner arc-shaped protrusion and the second inner arc-shaped protrusion, so that the first wing and the second wing respectively move closer to the first inner arc-shaped slider and the second inner arc-shaped slider. The pushing block is made of elastic material.

4. The foldable electronic device as claimed in claim 3, characterized in that, The first water droplet plate includes a first outer arc-shaped slider and a first push rod. The first support member also has a first outer arc-shaped slide rail, in which the first outer arc-shaped slider slides. The first connector also includes a first rotating shaft, through which the first push rod passes. The second water droplet plate includes a second outer arc-shaped slider and a second push rod. The second support member also has a second outer arc-shaped slide rail, in which the second outer arc-shaped slider slides. The second connector also includes a second rotating shaft, through which the second push rod passes. The central base also includes a locking block. The shapes of the main block, the first extension, and the second extension of the pushing block match the shape of the locking block, so that the pushing block locks into the locking block.

5. The foldable electronic device as claimed in claim 4, characterized in that, The first shaft extends along a first axis, and the first straight slide groove extends substantially perpendicular to the first axis. The first transmission member further includes a first bent plate and a first straight slider. The first bent plate bends and extends radially along the first axis, and the first straight slider extends outward from the first bent plate along the radial direction of the first axis and slides in the first straight slide groove. The first intermediate arc-shaped slider is formed in the first straight slider. The second shaft extends along a second axis, and the second straight slide groove extends substantially perpendicular to the second axis. The second transmission member further includes a second bent plate and a second straight slider. The second bent plate bends and extends radially along the second axis, and the second straight slider extends outward from the second bent plate along the radial direction of the second axis and slides in the second straight slide groove. The second intermediate arc-shaped slider is formed in the second straight slider.

6. The foldable electronic device as claimed in claim 5, characterized in that, The foldable electronic device also includes a first spring and a second spring. The first spring is engaged with the first straight slider and is away from the first bending plate. The second spring is engaged with the second straight slider and is away from the second bending plate. The first support member also has a first rib and the second support member also has a second rib. When the first panel body and the second panel body are in the unfolded state, the first spring abuts against the first rib and the second spring abuts against the second rib. During the process of the first panel body and the second panel body changing from the unfolded state to the folded state, the first spring is compressed by the first rib and passes over and gradually moves away from the first rib. The second spring is compressed by the second rib and passes over and gradually moves away from the second rib.

7. The foldable electronic device as claimed in claim 6, characterized in that, The first transmission member further includes a first driving cam, and the second transmission member further includes a second driving cam. The pushing member has a first driven cam and a second driven cam. The first driving cam is slidably sleeved on the first shaft along the first axis and connected to the first bent plate, and cooperates with the first driven cam. The second driving cam is slidably sleeved on the second shaft along the second axis and connected to the second bent plate, and cooperates with the second driven cam. The pivot module includes a fixed seat, a first shaft hole, and a second shaft hole. The fixed seat has a first wing and a second wing. The first shaft hole is formed through the first wing along the first axis, and the first shaft passes through the first shaft hole. The second shaft hole is formed through the second wing along the second axis, and the second shaft passes through the second shaft hole.

8. The foldable electronic device as claimed in claim 7, characterized in that, The first driven cam is sleeved on the first shaft, and the second driven cam is sleeved on the second shaft. The first driving cam and the first driven cam mesh with each other, and the second driving cam and the second driven cam mesh with each other. The elastic module also includes a first elastic element and a second elastic element, which are respectively sleeved on the first shaft and the second shaft. The two ends of the first elastic element abut against the first wing and the first driven cam, and the two ends of the second elastic element abut against the second wing and the second driven cam, respectively. When the first panel body... When the second panel body is in a half-open state between the unfolded state and the folded state, the first active cam and the second active cam abut against the first driven cam and the second driven cam, thereby compressing the first elastic member and the second elastic member. When the first support member and the second support member are in the unfolded state or the folded state, the first elastic member and the second elastic member are released accordingly. The first axis, the first inner virtual axis, the first outer virtual axis, the second axis, the second inner virtual axis, and the second outer virtual axis are parallel to each other.

9. The foldable electronic device as claimed in any one of claims 1 to 8, characterized in that, The synchronization module also includes a first spiral bump, a second spiral bump, a first spiral groove and a second spiral groove, wherein the first spiral bump is matched and accommodated in the first spiral groove, and the second spiral bump is matched and accommodated in the second spiral groove.

10. The foldable electronic device as claimed in claim 9, characterized in that, The first helical groove is recessed in the first transmission member along a first helical direction, and the second helical groove is recessed in the second transmission member along a second helical direction and corresponds to the first helical groove. The first helical protrusion and the second helical protrusion are respectively formed on opposite sides of the synchronous slider body, and the first helical direction is opposite to the second helical direction.

11. The foldable electronic device as claimed in claim 10, characterized in that, The central base also includes an outer shell that covers the main body. When the first panel body and the second panel body are in the unfolded state, the first water droplet plate and the second water droplet plate contact the top side of the outer shell. When the first panel body and the second panel body are in the folded state, the first water droplet plate and the second water droplet plate move away from the outer shell. The central base also includes a track groove that extends through the track portion. The synchronization module also includes a limiting rib formed in the synchronization slider body. The limiting rib is slidably accommodated in the track groove.

Images