Folding screen assembly and electronic device

Abstract

A folding screen assembly and an electronic device relate to the technical field of electronic devices. The folding screen assembly comprises a first shell, a second shell, a rotating shaft device, a first transmission rod system and a first sliding plate. The first shell and the second shell are rotationally connected through the rotating shaft device, and the first sliding plate is slidingly connected to the first shell. The first transmission rod system comprises a first synchronous arm, one end of the first synchronous arm is rotationally connected to a rotating shaft of the rotating shaft device, and the other end is slidingly connected to the first shell. The first synchronous arm is connected to the first sliding plate through the first transmission rod system. When the first shell slides away from the first synchronous arm, the first synchronous arm drives the first sliding plate to move away from the rotating shaft device relative to the first shell. The folding screen assembly and the electronic device provided by the present disclosure can increase the distance between the display screen and the rotating shaft device in the folded state, and reduce the risk of screen damage when the device is knocked or dropped.

Description

Technical Field

[0001] This disclosure relates to the field of electronic device technology, and more specifically, to a foldable screen component and an electronic device. Background Technology

[0002] To combine large screens with portability, electronic devices can employ a foldable structure, where two housings can rotate relative to each other around a hinge to unfold or fold. Foldable screen devices offer a larger display area when unfolded and better portability when folded.

[0003] For foldable screens, when the screen is folded, the area near the hinge is closer to the hinge, which makes the hinge components more likely to collide with the screen and cause damage when the device is bumped or dropped. Summary of the Invention

[0004] This disclosure provides a foldable screen assembly and electronic device that can increase the distance between the display screen and the hinge device in the folded state, reducing the risk of screen damage or failure when the device is bumped or dropped.

[0005] According to one aspect of this disclosure, a foldable screen assembly is provided, including a first housing, a second housing, a pivot device, a first transmission rod system, and a first sliding plate; the first housing and the second housing are rotatably engaged by the pivot device, and the first sliding plate is slidably connected to the first housing.

[0006] The rotating shaft device includes a first synchronous arm, one end of which is rotatably connected to the rotating shaft of the rotating shaft device, and the other end is slidably engaged with the first housing. The first synchronous arm is connected to the first sliding plate through a first transmission rod system. When the first housing slides away from the first synchronous arm, the first synchronous arm drives the first sliding plate to move away from the first housing relative to the rotating shaft device.

[0007] In one exemplary embodiment of this disclosure, the first transmission linkage includes a first pull rod and a lever mechanism; one end of the first pull rod is slidably connected to a first synchronous arm, and the other end of the first pull rod is connected to the lever mechanism; the other end of the lever mechanism is connected to a first sliding plate; when the first housing slides away from the first synchronous arm, the first synchronous arm drives the first pull rod to move towards the rotating shaft device, and the first pull rod drives the end of the lever mechanism away from the first pull rod to move towards the first side, so as to drive the first sliding plate to move towards the first side, the first side being the side of the first housing away from the rotating shaft device.

[0008] In one exemplary embodiment of this disclosure, the first transmission linkage includes a second pull rod, the two ends of which are rotatably connected to the first synchronous arm and the first pull rod, respectively; the axis of rotation between the second pull rod and the first synchronous arm and the axis of rotation between the second pull rod and the first pull rod are both parallel to the axis of the rotating shaft device.

[0009] In one exemplary embodiment of this disclosure, the lever mechanism includes a swing arm, a first pull rod that rolls with a first end of the swing arm, a second end of the swing arm that is connected to a first sliding plate, a first fixing part that is located between the first end and the second end, and the swing arm that is rotatably connected to the first housing via the first fixing part.

[0010] In one exemplary embodiment of this disclosure, a first limiting groove is provided on the surface of the first housing facing the first sliding plate; the first limiting groove extends along the rotation axis device toward the first side; at least a portion of the first pull rod is slidably disposed in the first limiting groove.

[0011] In one exemplary embodiment of this disclosure, a second limiting groove is provided on the surface of the first housing facing the first sliding plate; a second fixing part is provided in the second limiting groove, and the second fixing part is rotatably connected to the shaft hole of the first fixing part; at least a portion of the swing arm is slidably disposed in the second limiting groove.

[0012] In one exemplary embodiment of this disclosure, the first end of the swing arm is provided with a rotating part, the first pull rod is provided with a first connecting groove, and the rotating part is rotatably disposed in the first connecting groove;

[0013] The second end of the swing arm is provided with a second connecting groove, which is connected to the first slide plate by a pin. One end of the pin is rotatably disposed in the second connecting groove, and the other end of the pin is fixedly connected to the first slide plate.

[0014] In one exemplary embodiment of this disclosure, the axis of the rotating part, the axis of the first fixed part, and the axis of the second connecting groove are coplanar.

[0015] In one exemplary embodiment of this disclosure, the distance from the first end of the swing arm to the first fixed part is greater than the distance from the second end of the swing arm to the first fixed part.

[0016] In one exemplary embodiment of this disclosure, the distance from the first end of the swing arm to the first fixed part is L1, the distance from the second end of the swing arm to the first fixed part is L2, and 4≤L1 / L2≤5.

[0017] In one exemplary embodiment of this disclosure, the first housing has a third limiting groove on the second side and / or the third side, the second side and the third side being two sides adjacent to the two ends of the rotating shaft device; a sliding part is provided on one side or opposite sides of the first slide plate, at least a portion of the sliding part slidingly engages in the third limiting groove.

[0018] In one exemplary embodiment of this disclosure, the first housing includes a first fixing frame and a first screen pressure plate, the first fixing frame and the first screen pressure plate are fixedly connected, and the first synchronizing arm is slidably disposed between the first fixing frame and the first screen pressure plate.

[0019] The first screen pressure plate is connected to the side of the first fixed frame near the first slide plate. The first screen pressure plate covers at least a portion of the first fixed frame and a portion of the first synchronous arm in a direction perpendicular to the first slide plate.

[0020] In one exemplary embodiment of this disclosure, the folding screen assembly further includes a second transmission rod system and a second sliding plate; the second sliding plate is slidably connected to the second housing; the rotating shaft device includes a second synchronizing arm, one end of which is rotatably connected to the rotating shaft of the rotating shaft device, and the other end is slidably engaged with the second housing; the second synchronizing arm is connected to the second sliding plate through the second transmission rod system, and when the second housing slides away from the second synchronizing arm, the second synchronizing arm drives the second sliding plate to move away from the rotating shaft device relative to the second housing.

[0021] According to another aspect of this disclosure, an electronic device is provided, comprising:

[0022] The foldable screen component of any of the aforementioned items;

[0023] The display screen has a first part connected to the first slide plate and a second part connected to the second housing.

[0024] The foldable screen assembly and electronic device disclosed herein, during the transition from an unfolded state to a folded state, involve the first housing rotating relative to the pivot device to cause a first synchronous arm to slide away from the first housing. The first synchronous arm can then drive a first sliding plate on the first housing to move further away from the pivot device via a first transmission rod system. The first sliding plate can be used to mount the first part of the display screen, thereby pushing the first part of the display screen located on one side of the first housing away from the pivot device. This increases the distance between the bent area of ​​the display screen and the pivot device in the folded state, making it less likely for the structural components of the pivot device to come into contact with the display screen in the event of an impact or drop, thus reducing the risk of damage or failure of the display screen.

[0025] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0026] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0027] Figure 1 This is a schematic diagram of an exemplary embodiment of the foldable screen component disclosed herein in its unfolded state.

[0028] Figure 2 This is a schematic diagram of an exemplary embodiment of the foldable screen component of this disclosure in a folded state.

[0029] Figure 3 This is an exploded view of the unfolded state in an exemplary embodiment of the foldable screen component disclosed herein.

[0030] Figure 4 This is a schematic diagram of the first transmission linkage in an exemplary embodiment of the foldable screen assembly disclosed herein.

[0031] Figure 5 This is a schematic diagram of the first transmission linkage in an exemplary embodiment of the foldable screen assembly disclosed herein.

[0032] Figure 6 This is a schematic diagram of the first transmission linkage in an exemplary embodiment of the foldable screen assembly disclosed herein.

[0033] Figure 7 This is a schematic diagram showing the sliding connection between the third limiting groove and the first sliding plate in an exemplary embodiment of the folding screen component disclosed herein.

[0034] Figure 8 This is a schematic diagram of the swing arm in one exemplary embodiment of the foldable screen component disclosed herein.

[0035] Figure 9 This is a schematic diagram of the connection between the first pull rod and the swing arm, and the posture of the swing arm in the second limiting groove, in an exemplary embodiment of the folding screen component disclosed herein.

[0036] Figure 10 This is a schematic diagram of the first pull rod in an exemplary embodiment of the foldable screen component disclosed herein.

[0037] Figure 11 This is a schematic diagram of a pin in one exemplary embodiment of the foldable screen component disclosed herein.

[0038] Figure 12 This is a schematic diagram showing the cooperation between the sliding part on one side of the first slide plate and the third limiting groove in an exemplary embodiment of the folding screen assembly disclosed herein.

[0039] Explanation of reference numerals in the attached figures:

[0040] 11. First housing; 111. First limiting groove; 112. Second limiting groove; 113. Second fixing part; 114. Third limiting groove; 115. Cut-off part; 116. First side part; 117. Second side part; 118. Third side part; 119. First fixing frame; 12. Second housing;

[0041] 2. Rotating shaft device; 21. First rotating shaft; 22. Second rotating shaft; 23. Back cover; 24. First screen pressure plate; 25. First gear; 26. Second gear; 271. First synchronous arm; 272. Second synchronous arm;

[0042] 31. First pull rod; 311. First connecting groove; 32. Swing arm; 321. First fixing part; 322. Rotating part; 323. Second connecting groove; 34. Second pull rod; 35. Pin; 351. First pin part; 352. Second pin part;

[0043] 4. First skateboard; 41. Sliding part; 5. Second skateboard. Detailed Implementation

[0044] Exemplary embodiments will now be described more fully with reference to the accompanying drawings. However, these exemplary embodiments can be implemented in many forms and should not be construed as limited to the embodiments set forth herein; rather, they are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and therefore detailed descriptions of them will be omitted. Furthermore, the drawings are merely illustrative of this disclosure and are not necessarily drawn to scale.

[0045] Unless otherwise specified or stated, the technical or scientific terms used in this disclosure shall have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms “a,” “an,” “the,” “the,” and “at least one” are used to indicate the presence of one or more elements / components / etc.; the terms “comprising” and “having” are used to indicate an open-ended inclusion and to mean that there may be other elements / components / etc. in addition to those listed; the terms “first” and “second” are used only as illustrative marks and are not intended to limit the number, importance, or order of the objects.

[0046] The terms “connection” and “fixation” in this disclosure should be interpreted broadly. For example, “connection” can mean an integral connection or a detachable connection; it can mean a direct connection or an indirect connection through an intermediate medium.

[0047] In the description of this disclosure, it should be understood that the terms “center”, “thickness”, “longitudinal / lateral”, “inner / outer”, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this disclosure and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this disclosure.

[0048] This disclosure provides a foldable screen component and an electronic device having the foldable screen component. The electronic device can be a user device or terminal, or a non-user device. For example, the electronic device can include, but is not limited to, mobile phones, portable Android devices (PADs), laptops, ultra-mobile personal computers (UMPCs), personal digital assistants (PDAs), walkie-talkies, virtual reality (VR) devices, augmented reality (AR) devices, Bluetooth speakers / headphones, in-vehicle display devices, security devices, etc., and can also be other mobile or fixed terminals with a display screen. The embodiments of this disclosure do not limit this.

[0049] For ease of description, the exemplary embodiments of this disclosure are illustrated using a handheld device with wireless communication capabilities as an example. For instance, a foldable mobile phone with a foldable flexible display screen is used as an example.

[0050] To balance the size and display area of ​​electronic devices, foldable structures can be employed. For example, an electronic device may include a foldable screen assembly comprising two housings that can rotate relative to each other around a hinge to unfold or fold. A flexible display screen covers the two housings. When the two housings are unfolded to the same plane, the flexible display screen is in an unfolded state. When the two housings are folded together, the flexible display screen is in a folded state. However, in the folded state, the bent portion of the flexible display screen is closer to the hinge, making it susceptible to damage or malfunction in the event of a collision or drop, as the hinge's structural components may impact the screen.

[0051] To address the aforementioned issues, this disclosure provides a foldable screen assembly that can increase the distance between the display screen and the hinge device in the folded state, thereby reducing the risk of screen damage when the device is bumped or knocked.

[0052] In this disclosure and the accompanying drawings, a foldable screen assembly comprising two housings, a first housing 11 and a second housing 12, is used as an example for illustration. It is understood that the foldable screen assembly may also include multiple housings and more than one pivot device, wherein the housings on either side of the pivot device can rotate relative to the pivot device to unfold or fold. The axes of the multiple pivot devices may be parallel, such that the flip axes of each housing are in the same direction; or the axes of the multiple pivot devices may not be parallel, such that the flip axes of each housing form a certain angle.

[0053] The following is in conjunction with the appendix Figures 1 to 12 The foldable screen component provided in this application will be described in detail through specific embodiments.

[0054] Please refer to Figure 1 The diagram shown illustrates the unfolded state of the foldable screen component. Figure 2 The diagram shown illustrates the folded state of the foldable screen component. Figure 3 An exploded view of the foldable screen component in its unfolded state is shown.

[0055] The foldable screen assembly includes a first housing 11, a second housing 12, a pivot device 2, a first transmission linkage, and a first sliding plate 4. The first housing 11 and the second housing 12 are rotatably connected via the pivot device 2, and the first sliding plate 4 is slidably connected to the first housing 11. The first transmission linkage includes a first synchronizing arm 271, one end of which is rotatably connected to the pivot of the pivot device 2, and the other end is slidably connected to the first housing 11. The first synchronizing arm 271 is connected to the first sliding plate 4 via the first transmission linkage. When the first housing 11 slides away from the first synchronizing arm 271, the first synchronizing arm 271 drives the first sliding plate 4 to move relative to the first housing 11 away from the pivot device 2.

[0056] Specifically, the first housing 11 and the second housing 12 are basic structural components that provide mounting bases for various components in the electronic device. The housing of the folding screen assembly may include a mid-frame; for example, the first housing 11 may include a first mid-frame, and the second housing 12 may include a second mid-frame. The first mid-frame and the second mid-frame can be rotatably engaged by the pivot device 2. The first housing 11 and the second housing 12 are used to mount the display screen. For example, the first housing 1, such as the first mid-frame, has a first sliding plate 4 slidably connected to it, and the first part of the display screen is connected to the first sliding plate 4; the second housing 12, such as the second mid-frame, has a second sliding plate 5 slidably connected to it, and the second part of the display screen is connected to the second sliding plate 5. When the first housing 11 and the second housing 12 (and the first sliding plate 4 and the second sliding plate 5) are unfolded to the same plane, the display screen is in an unfolded state, and the folding screen assembly is in an unfolded state. When the first housing 11 and the second housing 12 (and the first sliding plate 4 and the second sliding plate 5) are folded together, the display screen is in a folded state, and the folding screen assembly is also in a folded state. For example, in addition to maintaining in the unfolded and folded states, the folding screen assembly can also maintain stability in any state between the unfolded and folded states. In other embodiments, the second slide plate 5 may be fixedly connected to the second housing 12, and the second part of the display screen may be connected to the second slide plate 5; or the second part of the display screen may be connected to the second housing 12.

[0057] In the process of transitioning from an unfolded state to a folded state, the first housing 11 rotates relative to the pivot device 2, causing the first synchronous arm 271 to slide away from the first housing 11. The first synchronous arm 271 can drive the first sliding plate 4 to move further away from the pivot device 2 on the first housing 11 via the first transmission rod system. The first sliding plate 4 can be used to mount the first part of the display screen. Thus, when the folding screen assembly is folded, the first sliding plate 4 pushes the first part of the display screen located on one side of the first housing 11 away from the pivot device 2, increasing the distance between the bent area of ​​the display screen and the pivot device 2 in the folded state. When the electronic device is bumped or dropped, the structural components of the pivot device 2 are less likely to come into contact with the display screen, reducing the risk of damage or failure of the display screen.

[0058] Understandably, during the process of the folding screen assembly changing from a folded state to an unfolded state, the first housing 11 rotates relative to the pivot device 2 to drive the first synchronous arm 271 to slide closer to the first housing 11. The first synchronous arm 271 can drive the first slide plate 4 to move relative to the first housing 11 towards the pivot device 2 through the first transmission rod system to achieve reset.

[0059] In some exemplary embodiments of this disclosure, the folding screen assembly can be an outward-folding folding screen assembly, and the electronic device can be an outward-folding electronic device. That is, in the folded state, the side of the first housing 11 away from the display screen is stacked on the side of the second housing 12 away from the display screen, thereby achieving outward folding. In other exemplary embodiments of this disclosure, the folding screen assembly can be an inward-folding folding screen assembly, and the electronic device can be an inward-folding electronic device. That is, in the folded state, the side of the first housing 11 near the display screen is stacked on the side of the second housing 12 near the display screen, thereby achieving inward folding. In the following description, an inward-folding folding screen assembly and an inward-folding electronic device will be used as examples.

[0060] Please refer to Figure 4 The diagram shows a schematic of the first transmission linkage. It should be noted that, in order to more clearly illustrate the structures intended to be explained by the exemplary embodiments in the accompanying drawings, some parts or all of the structures are omitted in some of the drawings. Incomplete structural boundaries are indicated by double-dotted lines. This omission will not affect the understanding of the technical solutions of this disclosure by those skilled in the art.

[0061] In embodiments of this disclosure, the first housing 11 and the second housing 12 are rotatably coupled via a rotating shaft device 2. For example, see reference... Figure 2 As shown, the hinge device 2 includes a back cover 23 located between the first housing 11 and the second housing 12. When the first housing 11 and the second housing 12 are in the unfolded state, they can partially or completely cover the back cover 23; when the first housing 11 and the second housing 12 are in the folded state, at least a portion of the back cover 23 is exposed outside the first housing 11 and the second housing 12. Exemplarily, the side of the back cover 23 facing the display screen may have a receiving recess, thereby providing a mounting base for related structural components in the hinge device 2. (Reference) Figure 2 As shown, the back cover 23 can be a strip structure.

[0062] For example, the rotating shaft device 2 includes a rotating shaft and a rotating bracket. The rotating bracket is fixed to the back cover 23, and the first housing 11 is rotatably connected to the rotating bracket via the rotating shaft. For example, both the first housing 11 and the rotating bracket may have shaft holes. By correspondingly inserting the rotating shaft into the shaft holes of the first housing 11 and the rotating bracket, a rotatable connection can be formed between the first housing 11 and the rotating bracket. For example, the rotating shaft may be rotatably mounted on the rotating bracket, and the first housing 11 may be fixedly connected to the rotating shaft and rotate synchronously, thereby driving the rotating shaft to rotate relative to the rotating bracket when flipped. Another example is that the rotating shaft may be fixedly sleeved on the rotating bracket, and the first housing 11 may be rotatably connected to the rotating shaft.

[0063] In other embodiments of this disclosure, the first housing 11 and the rotating shaft may be integrally formed, that is, the first housing 11 itself includes the rotating shaft. By providing a shaft hole on the rotating bracket, the rotational connection between the first housing 11 and the rotating bracket can be realized.

[0064] In some embodiments of this disclosure, the rotating shaft of the rotating shaft device 2 may not be limited to one shaft. For example, refer to... Figure 4 As shown, the rotating shaft device 2 includes a first rotating shaft 21, a second rotating shaft 22, and a rotating bracket. The first rotating shaft 21 and the second rotating shaft 22 are installed parallel to each other on the rotating bracket. The first rotating shaft 21 is connected to the first housing 11, and the first housing 11 is rotatably connected to the rotating bracket through the first rotating shaft 21. The second rotating shaft 22 is connected to the second housing 12, and the second housing 12 is rotatably connected to the rotating bracket through the second rotating shaft 22.

[0065] The first rotating shaft 21 and the second rotating shaft 22 are arranged in parallel, so that the first housing 11 and the second housing 12 can rotate around two mutually parallel axes respectively, thereby increasing the space for the first housing 11 and the second housing 12 to avoid mutual interference during the unfolding or folding of the electronic device.

[0066] The first housing 11 is rotatably connected to the rotating bracket via the first rotating shaft 21. Referring to the description of the aforementioned exemplary embodiments, the first rotating shaft 21 may be rotatably mounted on the rotating bracket, and the first housing 11 and the first rotating shaft 21 may be fixedly connected and rotate synchronously, so that the first housing 11 can drive the first rotating shaft 21 to rotate relative to the rotating bracket when it is flipped. Alternatively, the first rotating shaft 21 may be fixedly sleeved on the rotating bracket, and the first housing 11 and the first rotating shaft 21 may be rotatably connected.

[0067] The second housing 12 is rotatably connected to the rotating bracket via the second rotating shaft 22. Alternatively, the second rotating shaft 22 can be rotatably mounted on the rotating bracket, and the second housing 12 and the second rotating shaft 22 are fixedly connected and can rotate synchronously, so that the second housing 12 drives the second rotating shaft 22 to rotate relative to the rotating bracket when it is flipped. Alternatively, the second rotating shaft 22 can be fixedly sleeved on the rotating bracket, and the second housing 12 and the second rotating shaft 22 are rotatably connected.

[0068] In some embodiments, the first housing 11 and the first rotating shaft 21 may also be integrally formed to achieve a rotatable connection between the first housing 11 and the rotating bracket; the second housing 12 and the second rotating shaft 22 may also be integrally formed to achieve a rotatable connection between the second housing 12 and the rotating bracket.

[0069] refer to Figure 4As shown, the rotating shaft device 2 includes a first synchronizing arm 271. One end of the first synchronizing arm 271 is rotatably connected to the rotating shaft of the rotating shaft device 2, for example, one end of the first synchronizing arm 271 is sleeved on the first rotating shaft 21; the other end of the first synchronizing arm 271 is slidably engaged with the first housing 11.

[0070] Specifically, the first housing 11 may include a first fixing frame 119 and a first screen pressure plate 24. The first fixing frame 119 and the first screen pressure plate 24 are fixedly connected, and a sliding space is formed between the first fixing frame 119 and the first screen pressure plate 24. The first synchronous arm 271 has a sliding end, which is slidably disposed within the sliding space between the first fixing frame 119 and the first screen pressure plate 24. In the unfolded state of the folding screen assembly, the sliding end of the first synchronous arm 271 slides into the sliding space, making the distance between the first fixing frame 119 and the first rotating shaft 21 smaller; in the folded state of the folding screen assembly, the sliding end of the first synchronous arm 271 slides out of the sliding space, making the distance between the first fixing frame 119 and the first rotating shaft 21 larger. Therefore, the rotating shaft device 2 can drive the first housing 11 towards the rotating shaft device 2 in the unfolded state through the relative movement of the first fixing frame 119 and the first synchronous arm 271; and drive the first housing 11 away from the rotating shaft device 2 in the folded state.

[0071] In an exemplary embodiment of this disclosure, during the transition from an unfolded state to a folded state, the first housing 11 moves away from the first synchronous arm 271, thereby moving away from the pivot device 2 and increasing the storage space of the display screen in the folded state. Simultaneously, as the first housing 11 and the first synchronous arm 271 move away from each other, the first synchronous arm 271 can also drive the first sliding plate 4 to slide on the first housing 11 towards the first side portion 116 via the first transmission rod system, further moving away from the pivot device 2. The first side portion 116 is the side of the first mid-frame away from the pivot device 2. Therefore, the exemplary embodiment of this disclosure can increase the outward movement stroke of the first part of the display screen, thereby increasing the distance between the bent area of ​​the display screen and the pivot device 2 in the folded state.

[0072] The first synchronous arm 271 is rotatably connected to the rotating bracket via the first rotating shaft 21. This can be referred to the description of the aforementioned exemplary embodiments, and will not be repeated here.

[0073] The first screen pressure plate 24 is connected to the side of the first fixing frame 119 near the first slide plate 4. (Reference) Figure 1 , Figure 3 and Figure 4As shown, in a direction perpendicular to the first sliding plate 4, from the display screen side towards the first housing 11 side, the first screen pressure plate 24 can at least cover a portion of the first fixing frame 119 and a portion of the first synchronous arm 271. The first screen pressure plate 24 can provide support for the display screen and facilitate guiding the display screen to bend in an ideal bending shape, for example, making it easier to bend the display screen into a teardrop shape, and making the radius of the bending area of ​​the display screen transition smoothly, making it less prone to damage or creases.

[0074] For example, the first rotating shaft 21 and the second rotating shaft 22 may each be provided with a first gear 25 for transmission connection. For instance, two first gears 25 are respectively sleeved on the first rotating shaft 21 and the second rotating shaft 22, and the two first gears 25 can act as synchronizing gears, so that the first housing 11 and the second housing 12 can rotate synchronously. The first gear 25 can be a complete gear or a part of a gear. The two first gears 25 are connected for transmission, for example, the two first gears 25 can be directly meshed for transmission connection, or a transition gear set can be provided between the two first gears 25 to achieve synchronous rotation of the two first gears 25. For example, refer to Figure 4 As shown, the transition gear set may include two second gears 26, which are directly meshed with two first gears 25 and driven by direct meshing. Exemplarily, the second housing 12 may also be rotatably connected to the rotating shaft device 2 via a second synchronizing arm 272 sleeved on the second rotating shaft 22. The two first gears 25 may be integrally formed with the first synchronizing arm 271 and the second synchronizing arm 272, respectively; specifically, the first gears 25 may be formed on the first synchronizing arm 271 and the second synchronizing arm 272.

[0075] In one exemplary embodiment of this disclosure, reference is made to Figure 3 , Figure 4 , Figure 5 as well as Figure 6 As shown, Figure 5 A schematic diagram of the first transmission linkage is shown. Figure 6 A schematic diagram of the folded state of the foldable screen assembly is shown. The first transmission linkage may include a first pull rod 31 and a lever mechanism. The first pull rod 31 is located between the first synchronizing arm 271 and the lever mechanism, that is, one end of the first pull rod 31 is slidably connected to the first synchronizing arm 271, and the other end is connected to the lever mechanism. The other end of the lever mechanism is connected to the first sliding plate 4. When the first housing 11 slides away from the first synchronizing arm 271, the first synchronizing arm 271 drives the first pull rod 31 to move towards the rotating shaft device 2. The first pull rod 31 drives the end of the lever mechanism away from the first pull rod 31 to move towards the first side 116, thereby driving the first sliding plate 4 to move towards the first side 116.

[0076] One end of the first pull rod 31 is slidably connected to the first synchronizer arm 271, or the connection can be direct. For example, one end of the first pull rod 31 connected to the first synchronizer arm 271 may have a sliding groove, and the other end may have a sliding shaft located within the sliding groove. This allows the first synchronizer arm 271 to move while simultaneously allowing relative rotation between the first synchronizer arm 271 and the first pull rod 31, preventing motion interference. Exemplarily, the first pull rod 31 may be connected to the sliding end of the first synchronizer arm 271.

[0077] One end of the first pull rod 31 is slidably connected to the first synchronous arm 271, or it can be indirectly slidably connected to the first synchronous arm 271. In an exemplary embodiment of this disclosure, the first transmission linkage may further include a second pull rod 34, with its opposite ends rotatably connected to the first synchronous arm 271 and the first pull rod 31, respectively; the axes of rotation between the second pull rod 34 and the first synchronous arm 271, and the axes of rotation between the second pull rod 34 and the first pull rod 31, are both parallel to the axis of the rotating shaft device 2. Thus, when the first housing 11 and the second housing 12 rotate relative to each other, the second pull rod 34 rotates in a plane perpendicular to the axis of the rotating shaft device 2.

[0078] Specifically, for ease of description, since the first housing 11 and the second housing 12 are rotatably engaged via the rotating shaft device 2, this disclosure uses the axial direction of the rotating shaft device 2 to refer to the axial direction of the rotating shafts of the first housing 11 and the second housing 12. It can be understood that the axial direction of the rotating shaft device 2 can be the axial direction of the first rotating shaft 21 and the second rotating shaft 22. When the first housing 11 flips from the unfolded state to the folded state, the first synchronous arm 271 is driven to rotate inward, the first synchronous arm 271 partially rotates out of the rotating shaft device 2, the sliding end slides out of the sliding space, and the second pull rod 34 pulls the first pull rod 31 towards the rotating shaft device 2. The two opposite ends of the second pull rod 34 are rotatably connected to the first synchronous arm 271 and the first pull rod 31 respectively, so that while the first synchronous arm 271 can drive the first pull rod 31 to move via the second pull rod 34, the first synchronous arm 271 and the first pull rod 31 can also rotate relative to each other, avoiding motion interference. For example, the second pull rod 34 can be connected to the sliding end of the first synchronous arm 271.

[0079] refer to Figure 3 , Figure 4 as well as Figure 6As shown, the surface of the first housing 11 facing the first sliding plate 4 may be provided with a first limiting groove 111. The first limiting groove 111 extends along the direction of the rotating shaft device 2 toward the first side portion 116, and the first limiting groove 111 may be parallel to the first sliding plate 4 and perpendicular to the axis of the rotating shaft device 2. At least a portion of the first pull rod 31 is slidably disposed in the first limiting groove 111, and the first limiting groove 111 may limit the first pull rod 31 to slide in a direction parallel to the first sliding plate 4 and perpendicular to the axis of the rotating shaft device 2.

[0080] refer to Figure 5 The diagram shows a cross-sectional view of the first limiting groove 111 and the first pull rod 31 slidably disposed therein. Figure 10 A schematic diagram of the first pull rod 31 is shown. The first limiting groove 111 can be a T-shaped groove, with its width away from the bottom of the first slide plate 4 being greater than its width near the top of the first slide plate 4; the first pull rod 31 can also be a T-shaped rod, with its width away from the bottom of the first slide plate 4 being greater than its width near the top of the first slide plate 4, thus allowing it to cooperate with the first limiting groove 111. After the first pull rod 31 is inserted into the first limiting groove 111, it is not easily dislodged upwards from a direction perpendicular to the first slide plate 4. In an exemplary embodiment, the first pull rod 31 can be entirely disposed within the first limiting groove 111.

[0081] The first transmission linkage includes a first pull rod 31 and a lever mechanism. The lever mechanism converts the motion component of the first pull rod 31 moving towards the rotating shaft device 2 into the motion component of the first slide plate 4 moving towards the first side portion 116. For example, the lever mechanism may include a gear set, a gear and rack mechanism, etc. Exemplarily, the first pull rod 31 may be provided with a first rack portion, which is connected to a second rack portion located at the bottom of the first slide plate 4 via a transmission gear or a transmission gear set, thereby realizing the reverse movement of the first pull rod 31 and the first slide plate 4 relative to the first housing 11. Exemplarily, the transmission ratio between the first rack portion and the transmission gear / transmission gear set, and the transmission ratio between the transmission gear / transmission gear set and the second rack portion may be unequal, thereby enabling the transmission of the movement of the first pull rod 31 to the reverse movement of the first slide plate 4 in an amplified or reduced manner.

[0082] In one exemplary embodiment of this disclosure, reference is made to Figures 3 to 6As shown, the lever mechanism includes a swing arm 32, a first pull rod 31 that rolls with the first end of the swing arm 32, and a second end of the swing arm 32 connected to the first slide plate 4. A first fixing part 321 is provided on the swing arm 32, located between the first end and the second end. The swing arm 32 is rotatably connected to the first housing 11 via the first fixing part 321. The middle part of the swing arm 32 rotates with the first housing 11 along a fixed axis. The first end and the second end of the swing arm 32 move in opposite directions, so that when the first pull rod 31 moves towards the rotating shaft device 2, the second end of the swing arm 32 drives the first slide plate 4 to move towards the first side portion 116.

[0083] In one exemplary embodiment of this disclosure, reference is made to Figure 4 , Figure 6 As shown, the surface of the first housing 11 facing the first sliding plate 4 is provided with a second limiting groove 112; a second fixing part 113 is provided in the second limiting groove 112, and the second fixing part 113 is rotatably connected to the shaft hole of the first fixing part 321; at least a portion of the swing arm 32 is slidably disposed in the second limiting groove 112. When the first pull rod 31 pulls the first end of the swing arm 32, the swing arm 32 rotates around the first fixing part 321 and the second fixing part 113 in the second limiting groove 112.

[0084] For example, the second fixing part 113 can be a protruding shaft, and the first fixing part 321 can be a through hole or blind hole opened in the middle between the first end and the second end of the second limiting groove 112. By fitting the hole of the first fixing part 321 onto the shaft of the second fixing part 113, a rotatable connection between the swing arm 32 and the second limiting groove 112 can be achieved. Alternatively, the second fixing part 113 can be a hole opened in the second limiting groove 112, and the first fixing part 321 can be a protruding shaft in the middle between the first end and the second end of the second limiting groove 112. By inserting the shaft of the first fixing part 321 into the hole of the second fixing part 113, a rotatable connection between the swing arm 32 and the second limiting groove 112 can be achieved.

[0085] refer to Figure 4 , Figure 6 The schematic diagram of the first transmission linkage shown and Figure 8 The schematic diagram of the swing arm 32 shown is as follows. Figure 9A partially enlarged view shows the connection between the first pull rod 31 and the swing arm 32, as well as the posture of the swing arm 32 within the second limiting groove 112. The first end of the swing arm 32 may have a rotating part 322, and the first pull rod 31 has a first connecting groove 311. The rotating part 322 is rotatably disposed within the first connecting groove 311, so that when the first pull rod 31 pulls the first end of the swing arm 32, the angle of the swing arm 32 relative to the first pull rod 31 can change. The second end of the swing arm 32 may have a second connecting groove 323, which is connected to the first slide plate 4 via a pin 35. One end of the pin 35 is rotatably disposed within the second connecting groove 323, and the other end of the pin 35 is fixedly connected to the first slide plate 4.

[0086] Specifically, refer to Figure 9 As shown, the rotating part 322 may include a cylindrical shaft, and the first connecting groove 311 may be a rectangular groove. The rotating part 322 can roll within the first connecting groove 311 because the outer cylindrical surface of the cylindrical shaft engages with the plane of the sidewall of the rectangular groove. The second connecting groove 323 may also be a rectangular groove, and the pin 35 can roll within the second connecting groove 323 because its outer cylindrical surface engages with the plane of the sidewall of the second connecting groove 323. For example, the axis of the rotating part 322, the axis of the first fixing part 321, and the axis of the second connecting groove 323 are coplanar. (Refer to...) Figure 8 As shown. The axis of the second connecting groove 323 in this disclosure can be the axis of the mating shaft defined by the second connecting groove 323, for example, the axis of the pin 35.

[0087] In one exemplary embodiment of this disclosure, the connection between the first limiting groove 111 and the second limiting groove 112 may have a cut-off portion 115, as shown in the reference. Figure 9 As shown, the shaving portion 115 can connect the first limiting groove 111 and the second limiting groove 112. During the movement of the first pull rod 31 within the first limiting groove 111 and the swing arm 32 within the second limiting groove 112, the shaving portion 115 can prevent motion interference between the swing arm 32 and the first limiting groove 111 and the second limiting groove 112. Exemplarily, the shaving portion 115 may not extend to the surface of the first housing 11 near the first sliding plate 4. For example, the bottom of the shaving portion 115 may be flush with the bottom surfaces of the first limiting groove 111 and the second limiting groove 112, and the top of the shaving portion 115 may be flush with the top surface of the first pull rod 31. As another example, the top of the shaving portion 115 may be flush with the top surface of the rotating part 322 of the swing arm 32.

[0088] The first sliding plate 4 is slidably connected to the first housing 11, and the first housing 11 may have a third limiting groove 114. (Reference) Figure 7As shown, the second side 117 and the third side 118, or one of them, of the first sliding plate 4 may have a third limiting groove 114. A sliding portion 41 may be provided on one side of the first sliding plate 4 perpendicular to the axis of the rotating shaft device 2, or on opposite sides. At least a portion of the sliding portion 41 is slidably engaged within the third limiting groove 114. The second side 117 and the third side 118 are the two sides adjacent to both ends of the rotating shaft device 2, that is, the two sides adjacent to the first side 116. For example... Figure 7 The image shows that the first sliding plate 4 has sliding portions 41 on both opposite sides. (Reference) Figure 12 The diagram shows a partially enlarged view of the sliding part 41 on one side of the first slide plate 4 engaging with the third limiting groove 114. The sliding part 41 can be a slider that protrudes from the side of the first slide plate 4 and extends in a direction perpendicular to the axis of the rotating shaft device 2 and parallel to the direction from the first housing 11 to the second housing. The third limiting groove 114 can be a groove with a correspondingly matching shape.

[0089] For example, refer to Figure 11 The schematic diagram of the pin 35 shown illustrates that the pin 35 has a first pin portion 351 for rotatable connection with the second connecting groove 323, and a second pin portion 352 for fixed connection with the first slide plate 4. The second pin portion 352 can be connected to the shaft hole of the first slide plate 4 and fixed by welding, riveting, bonding, or other methods, thereby enabling the pin 35 to drive the first slide plate 4 to move. Exemplarily, the diameter of the second pin portion 352 is larger than the diameter of the first pin portion 351, and the first pin portion 351 and the second pin portion 352 are coaxial.

[0090] In one exemplary embodiment of this disclosure, reference is made to Figure 8 , Figure 9 As shown, the distance from the first end of the swing arm 32 to the first fixed part 321 is greater than the distance from the second end of the swing arm 32 to the first fixed part 321, which reduces the thrust required for the first pull rod 31 to move the first slide plate 4 by a small amplitude. For example, if the distance from the first end of the swing arm 32 to the first fixed part 321 is L1 and the distance from the second end of the swing arm 32 to the first fixed part 321 is L2, and 4≤L1 / L2≤5, the larger displacement of the first pull rod 31 caused by the rotation of the first housing 11 can be converted into a smaller displacement of the pin 35 and the first slide plate 4, making the control of the movement of the first slide plate 4 more precise. Exemplarily, the folding screen assembly can maintain stability in any state between the unfolded state and the folded state. When the first housing 11 and the second housing 12 are at different angles, the displacement of the first pull rod 31 is different, corresponding to different displacements of the pin 35 and the first slide plate 4, which is adapted to the bending state of the display screen at that position, avoiding excessive stretching of the display screen.

[0091] The number of first transmission linkages is not limited to one. For example, the rotating shaft device 2 is rotatably connected to the first slide plate 4 through two first transmission linkages. The two first transmission linkages can be symmetrically or asymmetrically arranged on opposite sides of the first slide plate 4 along the axis of the rotating shaft device 2, and driven by two first synchronous arms 271, which can provide a more stable thrust to the first slide plate 4. Of course, the number of first transmission linkages can also be greater than two.

[0092] In one exemplary embodiment of this disclosure, the folding screen assembly further includes a second transmission linkage. For example, a second slide plate 5 is slidably connected to the second housing 12, the second part of the display screen is connected to the second slide plate 5, and the rotating shaft device 2 includes a second synchronous arm 272. One end of the second synchronous arm 272 is rotatably connected to the rotating shaft of the rotating shaft device 2, for example, sleeved on the second rotating shaft 22, and the other end is slidably engaged with the second housing 12. The second synchronous arm 272 is connected to the second slide plate 5 through the second transmission linkage. When the second housing 12 slides away from the second synchronous arm 272, the second synchronous arm 272 drives the second slide plate 5 to move away from the rotating shaft device 2. Exemplarily, the structure of the second synchronous arm 272 can be set with reference to the first synchronous arm 271; the slidable engagement between the second synchronous arm 272 and the second housing 12 can be set with reference to the slidable engagement between the first synchronous arm 271 and the first housing 11; the structure of the second transmission linkage can be set with reference to the first transmission linkage. Therefore, this disclosure will not further elaborate on the specific structure of the second transmission linkage and the connection method between the second transmission linkage and the second slide plate 5. For example, the number of second transmission links may also be greater than one.

[0093] This disclosure also provides an electronic device including the foldable screen assembly of any of the foregoing embodiments. The electronic device further includes a display screen, a first portion of which is connected to a first sliding plate 4, and a second portion of which is connected to a second housing 12, for example, to a second sliding plate 5. Of course, the electronic device may also include electronic components, which may be disposed within the first housing 11 and / or the second housing 12. For example, the electronic components may include, but are not limited to, a processor, memory, or a camera module. In some examples, a printed circuit board (PCB) is disposed within the first housing 11 and / or the second housing 12. The electronic components may be disposed on the printed circuit board.

[0094] For example, the display screen is a flexible display screen, and the components of the display screen may include polyethylene terephthalate (PET) film, foldable ultra-thin glass (UTG), pressure-sensitive adhesive (PSA), display panel and photoresist, etc. It is understood that the flexible display screen technology is currently mature, and the embodiments disclosed herein only exemplarily show some of the constituent materials of the flexible display screen and do not constitute a limitation on the technical solution of this disclosure.

[0095] In the process of transitioning from an unfolded state to a folded state, the first housing 11 of the folding screen assembly rotates relative to the pivot device 2, causing the first synchronizing arm 271 to slide away from the first housing 11. The first synchronizing arm 271 can drive the first sliding plate 4 to move further away from the pivot device 2 on the first housing 11 via the first transmission rod system. The first sliding plate 4 can be used to mount the first part of the display screen. Thus, when the folding screen assembly is folded, the first sliding plate 4 pushes the first part of the display screen located on one side of the first housing 11 away from the pivot device 2, increasing the distance between the bent area of ​​the display screen and the pivot device 2 in the folded state. When the electronic device is bumped or dropped, the structural components of the pivot device 2 are less likely to come into contact with the display screen, reducing the risk of damage or failure of the display screen.

[0096] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A folding screen assembly comprising: It includes a first housing (11), a second housing (12), a rotating shaft device (2), a first transmission rod system, and a first sliding plate (4); the first housing (11) and the second housing (12) are rotatably connected through the rotating shaft device (2), and the first sliding plate (4) is slidably connected to the first housing (11); The rotating shaft device (2) includes a first synchronizing arm (271), one end of which is rotatably connected to the rotating shaft of the rotating shaft device (2), and the other end is slidably engaged with the first housing (11); the first synchronizing arm (271) is connected to the first sliding plate (4) through the first transmission rod system; when the first housing (11) slides away from the first synchronizing arm (271), the first synchronizing arm (271) drives the first sliding plate (4) to move away from the rotating shaft device (2) relative to the first housing (11).

2. The foldable screen assembly according to claim 1, characterized in that, The first transmission linkage includes a first pull rod (31) and a lever mechanism; one end of the first pull rod (31) is slidably connected to the first synchronous arm (271), and the other end of the first pull rod (31) is connected to the lever mechanism; the other end of the lever mechanism is connected to the first slide plate (4); when the first housing (11) slides away from the first synchronous arm (271), the first synchronous arm (271) drives the first pull rod (31) to move closer to the rotating shaft device (2), and the first pull rod (31) drives the lever mechanism to move away from the first pull rod (31) towards the first side (116), so as to drive the first slide plate (4) to move towards the first side (116), where the first side (116) is the side of the first housing (11) away from the rotating shaft device (2).

3. The foldable screen assembly according to claim 2, characterized in that, The first transmission linkage includes a second pull rod (34), the two ends of which are rotatably connected to the first synchronous arm (271) and the first pull rod (31), respectively; the axis of rotation of the second pull rod (34) relative to the first synchronous arm (271) and the axis of rotation of the second pull rod (34) relative to the first pull rod (31) are both parallel to the axis of the rotating shaft device (2).

4. The foldable screen assembly according to claim 2 or 3, characterized in that, The lever mechanism includes a swing arm (32), the first pull rod (31) is in rolling engagement with the first end of the swing arm (32), the second end of the swing arm (32) is connected to the first slide plate (4), the swing arm (32) is provided with a first fixing part (321), the first fixing part (321) is located between the first end and the second end, and the swing arm (32) is rotatably connected to the first housing (11) through the first fixing part (321).

5. The foldable screen assembly according to claim 2, characterized in that, The first housing (11) has a first limiting groove (111) on the surface facing the first sliding plate (4); the first limiting groove (111) extends from the rotating shaft device (2) toward the first side (116); at least a portion of the first pull rod (31) is slidably disposed in the first limiting groove (111).

6. The foldable screen assembly according to claim 4, characterized in that, The first housing (11) has a second limiting groove (112) on the surface facing the first sliding plate (4); the second limiting groove (112) has a second fixing part (113) in it, and the second fixing part (113) is rotatably connected to the shaft hole of the first fixing part (321); at least part of the swing arm (32) is slidably disposed in the second limiting groove (112).

7. The foldable screen assembly according to claim 4, characterized in that, The first end of the swing arm (32) is provided with a rotating part (322), and the first pull rod (31) is provided with a first connecting groove (311). The rotating part (322) is rotatably disposed in the first connecting groove (311). The second end of the swing arm (32) is provided with a second connecting groove (323), and the second connecting groove (323) is connected to the first slide plate (4) by a pin (35). One end of the pin (35) is rotatably disposed in the second connecting groove (323), and the other end of the pin (35) is fixedly connected to the first slide plate (4).

8. The foldable screen assembly according to claim 7, characterized in that, The axis of the rotating part (322), the axis of the first fixing part (321), and the axis of the second connecting groove (323) are coplanar.

9. The foldable screen assembly according to claim 4, characterized in that, The distance from the first end of the swing arm (32) to the first fixing part (321) is greater than the distance from the second end of the swing arm (32) to the first fixing part (321).

10. The foldable screen assembly according to claim 9, characterized in that, The distance from the first end of the swing arm (32) to the first fixed part (321) is L1, and the distance from the second end of the swing arm (32) to the first fixed part (321) is L2, where 4≤L1 / L2≤5.

11. The foldable screen assembly according to claim 1, characterized in that, The first housing (11) has a third limiting groove (114) on the second side (117) and / or the third side (118), the second side (117) and the third side (118) being the two sides adjacent to the two ends of the first housing (11) and the rotating shaft device (2); a sliding part (41) is provided on one side or opposite sides of the first sliding plate (4), at least part of the sliding part (41) slidingly engaging in the third limiting groove (114).

12. The foldable screen assembly according to claim 1, characterized in that, The first housing (11) includes a first fixing frame (119) and a first screen pressure plate (24). The first fixing frame (119) and the first screen pressure plate (24) are fixedly connected. The first synchronization arm (271) is slidably disposed between the first fixing frame (119) and the first screen pressure plate (24). The first screen pressure plate (24) is connected to the side of the first fixing frame (119) near the first slide plate (4). The first screen pressure plate (24) at least covers a portion of the first fixing frame (119) and a portion of the first synchronization arm (271) in a direction perpendicular to the first slide plate (4).

13. The foldable screen assembly according to claim 1, characterized in that, The folding screen assembly also includes a second transmission rod system and a second sliding plate (5); the second sliding plate (5) is slidably connected to the second housing (12); the rotating shaft device (2) includes a second synchronous arm (272), one end of the second synchronous arm (272) is rotatably connected to the rotating shaft of the rotating shaft device (2), and the other end is slidably engaged with the second housing (12); the second synchronous arm (272) is connected to the second sliding plate (5) through the second transmission rod system, and when the second housing (12) slides away from the second synchronous arm (272), the second synchronous arm (272) drives the second sliding plate (5) to move away from the rotating shaft device (2) relative to the second housing (12).

14. An electronic device, characterized in that, include: The foldable screen assembly according to any one of claims 1 to 13; The display screen has a first part connected to the first slide plate (4) and a second part connected to the second housing (12).

Images