A rotating shaft mechanism and a terminal device

Abstract

The embodiment of the present application relates to the technical field of terminal equipment, and provides a rotating shaft mechanism and terminal equipment, which can solve the problem that the shaft cover of the terminal equipment in the foldable terminal equipment in the related art cannot well cover the internal space of the terminal equipment. The rotating shaft mechanism comprises a base, a swing arm, a connecting assembly and a shaft cover. The shaft cover has an accommodating space, at least a part of the base is arranged in the accommodating space, the swing arm is rotatably connected to the base, so that the swing arm can rotate relative to the base between an unfolded position and a folded position. The connecting assembly is connected between the swing arm and the shaft cover. When the swing arm rotates from the unfolded position to the folded position, the swing arm can drive the shaft cover to move along the direction close to the base through the connecting assembly. The present application can be used in terminal equipment such as mobile phones.

Description

[0001] This application claims priority to Chinese patent applications filed on January 18, 2022, with application number 202210064711.X, entitled "A Folding Mechanism and Terminal Device for a Terminal Device"; and on January 20, 2022, with application number 202210071650.X, also entitled "A Folding Mechanism and Terminal Device for a Terminal Device", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of terminal equipment technology, and in particular to a rotating shaft mechanism and a terminal device. Background Technology

[0003] Foldable screen phones (or other terminal devices with foldable screens) are currently a hot topic in the electronics industry, and the hinge mechanism is a core component used to enable the folding and unfolding of the display screen. One type of hinge mechanism in related technologies includes a swing arm and a hinge cover. The two sub-body units of the terminal device support the display screen, and the hinge cover serves to conceal the internal structure and improve the appearance of the junction between the two sub-body units. The swing arm is connected to both the sub-body units and the hinge cover, and can swing with the sub-body units relative to the hinge cover, allowing the two sub-body units to switch between a folded and unfolded state.

[0004] In the aforementioned terminal device, during the folding of the display screen between the two sub-body units, due to the limited structural space at the junction of the two sub-body units, there is a large gap between the shaft cover and the sub-body units when the two sub-body units are in the folded state. The internal components of the terminal device can easily be exposed through the gap between the shaft cover and the sub-body units, which makes it easy for external water, dust, etc. to enter the interior of the terminal device, adversely affecting the normal operation of the internal components. Summary of the Invention

[0005] Embodiments of this application provide a rotating shaft mechanism and a terminal device to solve the problem that the shaft cover in the rotating shaft mechanism of the related art cannot properly cover the internal space of the terminal device.

[0006] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0007] In a first aspect, embodiments of this application provide a pivot mechanism, including a base, a swing arm, a connecting assembly, and a shaft cover; the shaft cover has a receiving space, at least a portion of the base is disposed in the receiving space, the swing arm is rotatably connected to the base, so that the swing arm can rotate relative to the base between an unfolded position and a folded position; the connecting assembly is connected between the swing arm and the shaft cover, and when the swing arm rotates from the unfolded position to the folded position, the swing arm drives the shaft cover to move in a direction close to the base through the connecting assembly.

[0008] By adopting the above technical solution, when the swing arm rotates from the unfolded position to the folded position, the shaft cover moves along the direction close to the base under the drive of the connecting component, so as to "lift" the shaft cover. This allows the shaft cover to extend into the gap formed between the two sub-body when the terminal device is in the folded state, thereby increasing the overlap between the shaft cover and the sub-body. This allows the shaft cover to better cover the internal components of the terminal device, thereby better preventing external water, dust, etc. from entering the interior of the terminal device, so as to ensure the normal operation of the internal components of the terminal device.

[0009] In some embodiments, the connecting assembly includes a toggle member that rotates with the swing arm as the swing arm rotates from the unfolded position to the folded position, thereby causing the shaft cover to move toward the base.

[0010] By adopting the above technical solution, the number of parts in the connecting assembly can be relatively small, which not only helps to reduce costs, but also helps to improve the connection reliability between the connecting assembly and the shaft cover.

[0011] In some embodiments, the actuating element includes a rotating shaft and an eccentric portion disposed eccentrically relative to the rotating shaft. The swing arm is rotatably connected to the base via the rotating shaft. The rotating shaft is fixed relative to the swing arm in the circumferential direction. When the swing arm rotates from the unfolded position to the folded position, the eccentric portion abuts against the shaft cover to drive the shaft cover to move towards the base.

[0012] By adopting the above technical solution and setting an eccentric part that is eccentric relative to the rotating shaft, the space occupied by the movement trajectory of the eccentric part is small when the swing arm rotates, and it is not easy to interfere with the surrounding components.

[0013] In some embodiments, the shaft cover is provided with a cavity, and the eccentric portion extends into the cavity. When the swing arm rotates relative to the base toward the folded position, the eccentric portion can move within the cavity and abut against the inner wall of the cavity, thereby driving the shaft cover to move toward the base.

[0014] By adopting the above technical solution, the cavity can limit the eccentric part, and the eccentric part can smoothly drive the shaft cover to move without easily disengaging from the shaft cover, thereby improving the connection reliability between the actuating part and the shaft cover.

[0015] In some embodiments, the eccentric portion can move within the cavity along the width direction of the shaft cover; along a first direction, the cavity has opposing first inner walls and second inner walls, the first inner walls and the second inner walls abutting against the eccentric portion, and the first direction is perpendicular to both the length direction and the width direction of the shaft cover.

[0016] By adopting the above technical solution, the eccentric part can both "lift" and "lower" the shaft cover, eliminating the need for springs or other components to reset the shaft cover. This simplifies the structure of the connecting assembly and reduces the number of parts. Furthermore, during the rotation of the swing arm, the eccentric part maintains contact with the first and second inner walls of the cavity, minimizing collisions between the eccentric part and the first or second inner walls at the beginning or end of the swing arm's rotation that could cause shaft cover wobbling or noise. It also minimizes lag in the shaft cover's lifting or lowering motion with the swing arm, ensuring smooth and stable movement of the shaft cover during the folding and unfolding of the display screen.

[0017] In some embodiments, the shaft cover includes a shaft cover wall and a shaft cover connector, the shaft cover wall enclosing the receiving space, the shaft cover connector being at least partially disposed in the receiving space and detachably connected to the shaft cover wall, and the cavity being disposed on the shaft cover connector.

[0018] By adopting the above technical solution, when the cavity structure is damaged, it is not necessary to replace the entire shaft cover, which helps to reduce maintenance costs.

[0019] In some embodiments, along the width direction of the shaft cover, one end of the shaft cover connector is provided with an opening communicating with the cavity, the opening allowing the eccentric portion to extend into the cavity.

[0020] By adopting the above technical solution, the eccentric part can be easily inserted into the concave cavity, which helps to improve the installation efficiency of the actuating part.

[0021] In some embodiments, the shaft cover wall is provided with a limiting flange, which is disposed opposite to the opening to restrict at least a portion of the eccentric portion in the cavity.

[0022] By adopting the above technical solution, it is possible to prevent the eccentric part from moving completely out of the cavity from the opening during the rotation of the shaft.

[0023] In some embodiments, the eccentric portion is a columnar structure that protrudes relative to the rotating shaft, and the central axis of the eccentric portion is parallel to but not on the same axis as the central axis of the rotating shaft.

[0024] By adopting the above technical solution, the space occupied by the motion trajectory of the eccentric part can be made relatively smaller.

[0025] In some embodiments, the rotating shaft includes a flat section and a cylindrical section, and the eccentric portion, the flat section, and the cylindrical section are connected sequentially; the swing arm is provided with a flat hole that mates with the flat section, so that the rotating shaft is fixed relative to the swing arm in the circumferential direction; the swing arm is also provided with a swing arm hole that mates with the cylindrical section; the base is provided with a base hole for the flat section and the cylindrical section to pass through, and the shaft section of the flat section exposed in the flat hole and the shaft section of the cylindrical section exposed in the swing arm hole respectively pass into the corresponding base hole.

[0026] By adopting the above technical solution, the structure of the actuating component is simple and compact. It can achieve the rotatable connection between the swing arm and the base, and at the same time, the swing arm drives the rotating shaft to rotate, thereby driving the eccentric part to rotate, without causing the base to move.

[0027] In some embodiments, the eccentric portion and the rotating shaft are an integral structure.

[0028] By adopting the above technical solution, the connection strength between the actuating part and the rotating shaft can be improved, and the number of parts in the rotating shaft mechanism can be reduced.

[0029] In some embodiments, the shaft cover is slidably connected to the base along a first direction, so that the shaft cover can approach the receiving space along the first direction, wherein the first direction is perpendicular to both the length direction and the width direction of the shaft cover.

[0030] By adopting the above technical solution, the shaking that occurs when the swing arm moves the shaft cover closer to or away from the accommodating space can be avoided, thus making the movement of the shaft cover more stable.

[0031] In some embodiments, when the swing arm rotates from the folded position to the unfolded position, the swing arm can drive the shaft cover to move in a direction away from the base via the connecting assembly.

[0032] By adopting the above technical solution, the swing arm can drive the shaft cover to achieve bidirectional movement through the connecting component, making the connection structure between the connecting component and the shaft cover relatively simple and the number of parts of the connecting component relatively small.

[0033] In some embodiments, the swing arm includes a first swing arm and a second swing arm, both of which are rotatably connected to the base. The second swing arm has an unfolded position and a folded position. The second swing arm is connected to the shaft cover via the connecting assembly. The first swing arm is connected to the second swing arm via a first connecting structure, so that the first swing arm drives the second swing arm to rotate between the unfolded position and the folded position.

[0034] By adopting the above technical solution, there is no need to set a sliding connection structure on the sub-body to connect with the swing arm, which simplifies the connection between the swing arm and the sub-body and improves the reliability of the connection between the swing arm and the sub-body.

[0035] In some embodiments, the first connection structure includes a groove and a sliding part. The groove is disposed on one of the first swing arm and the second swing arm, and the sliding part is disposed on the other of the first swing arm and the second swing arm. One end of the groove is disposed close to the base, and the other end of the groove is disposed away from the base. The sliding part slides in cooperation with the groove.

[0036] By adopting the above technical solution, the first connecting structure is simple in structure and occupies little space.

[0037] In some embodiments, the first swing arm and the second swing arm are arranged side by side along the length direction of the shaft cover.

[0038] By adopting the above technical solution, the installation and disassembly of the first swing arm and the second swing arm can be facilitated.

[0039] In some embodiments, the first swing arm is provided with a clearance notch, and the second swing arm extends into the clearance notch.

[0040] By adopting the above technical solution, the design of the second swing arm and the first swing arm can be made more compact, reducing the overall space occupied by the second swing arm and the first swing arm.

[0041] In some embodiments, the base is provided with a first arc-shaped groove, the first swing arm is provided with a first arc-shaped piece, and the first arc-shaped piece slides in conjunction with the first arc-shaped groove so that the first swing arm is rotatably connected to the base.

[0042] By adopting the above technical solution, the contact area between the first arc-shaped piece and the first arc-shaped groove is larger, and the first arc-shaped piece is less likely to wobble when it slides relative to the first arc-shaped groove.

[0043] In some embodiments, the pivot mechanism includes a support member, the front of which is used to mount a display screen, the back of which is rotatably connected to the swing arm, and the support member is rotatably connected to the base via a second connecting structure, so that the support member can swing relative to the base under the drive of the swing arm.

[0044] By adopting the above technical solution, the bent parts of the display screen can be well supported and protected.

[0045] In some embodiments, the second connection structure includes a third swing arm and a mating groove. The third swing arm is rotatably connected to the base, and the mating groove is disposed on the support member. One end of the mating groove is disposed close to the base, and the other end of the mating groove is disposed away from the base. The third swing arm is slidably engaged with the mating groove.

[0046] By adopting the above technical solution, the third swing arm and the support can be connected more compactly, effectively utilizing the space in the thickness direction of the support. Furthermore, during the process of switching the two sub-body to the unfolded state, the gap between the support and the base can be reduced, so that the support and the base can better support the display screen. During the process of switching the two sub-body to the folded state, the two support can be made into an "eight" shape to better accommodate the bending part of the display screen.

[0047] In some embodiments, one of the support member and the swing arm is provided with a second arc-shaped groove, and the other of the support member and the swing arm is provided with a second arc-shaped piece. The second arc-shaped piece slides into the second arc-shaped groove so that the support member and the swing arm are rotatably connected.

[0048] By adopting the above technical solution, the contact area between the second arc-shaped piece and the second arc-shaped groove is larger, and the second arc-shaped piece is less likely to wobble when it slides relative to the second arc-shaped groove.

[0049] Secondly, embodiments of this application provide a terminal device, including a display screen, at least two adjacently arranged sub-body units, and the pivot mechanism described in the first aspect, wherein the sub-body units are used to support the display screen, and the pivot mechanism is located at the junction of the sub-body units.

[0050] The terminal device achieves the same technical effect as the rotating shaft mechanism in the first aspect, and will not be described in detail here.

[0051] In some embodiments, the swing arm of the rotating shaft mechanism is connected to the sub-body. When the sub-body is in a folded state, the swing arm is located in the folded position; when the sub-body is in an unfolded state, the swing arm is located in the unfolded position.

[0052] By adopting the above technical solution, the sub-body can drive the swing arm to swing during the folding or unfolding process, thereby "lifting" the shaft cover, and the swing arm does not need to be equipped with other drive mechanisms. Attached Figure Description

[0053] Figure 1 This is a schematic diagram of the terminal device in its unfolded state in some embodiments of this application;

[0054] Figure 2 for Figure 1 A schematic diagram of the terminal device after the display screen has been removed;

[0055] Figure 3 for Figure 2 A schematic diagram of the structure on the back side of the terminal device in the diagram;

[0056] Figure 4 for Figure 2 A schematic diagram of the terminal device in a folded state;

[0057] Figure 5a This is a simplified structural diagram of the two sub-body sections of the terminal device in the unfolded state in some embodiments of this application;

[0058] Figure 5b This is a simplified structural diagram of the two sub-body sections of the terminal device in a folded state in some embodiments of this application;

[0059] Figure 6a This is a schematic diagram of the terminal device in the first embodiment of this application;

[0060] Figure 6b This is a schematic diagram of the terminal device in the second embodiment of this application;

[0061] Figure 6c This is a schematic diagram of the terminal device in the third embodiment of this application;

[0062] Figure 6d This is a schematic diagram of the terminal device in the fourth embodiment of this application;

[0063] Figure 6e This is a schematic diagram of the terminal device in the fifth embodiment of this application;

[0064] Figure 6f This is a schematic diagram of the terminal device in the sixth embodiment of this application;

[0065] Figure 6g This is a schematic diagram of the terminal device in the seventh embodiment of this application;

[0066] Figure 6h This is a schematic diagram of the terminal device in the eighth embodiment of this application;

[0067] Figure 6i This is a schematic diagram of the terminal device in the ninth embodiment of this application;

[0068] Figure 7 for Figure 2 The exploded view of the terminal device shown is from one perspective (viewed from the side where the display screen is set).

[0069] Figure 8 for Figure 2 An exploded view of the terminal device shown from another perspective (viewed from the side where the shaft cover is located);

[0070] Figure 9 Exploded views of the base and shaft cover in some embodiments of this application;

[0071] Figure 10 for Figure 9 A partial view of the base and shaft cover shown;

[0072] Figure 11 for Figure 2 A cross-sectional view of the terminal device in the image;

[0073] Figure 12 for Figure 2 A cross-sectional view of the terminal device in the folded state;

[0074] Figure 13 This is a schematic diagram of the structure of the rotating shaft mechanism in some embodiments of this application when it is in the unfolded state, viewed from a certain perspective (from the side where the display screen is installed);

[0075] Figure 14 This is a schematic diagram of the structure of the rotating shaft mechanism in some embodiments of this application in the unfolded state from another perspective (viewed from the side where the shaft cover is provided);

[0076] Figure 15 This is a schematic diagram of the rotating shaft mechanism in some embodiments of this application when it is in a folded state (a pair of first and second swing arms have been removed);

[0077] Figure 16a for Figure 15 A schematic diagram of the rotating shaft mechanism from another perspective;

[0078] Figure 16b for Figure 14 BB section view of the rotating shaft mechanism in the middle without removing the shaft cover;

[0079] Figure 16c for Figure 14 A BB section view of the rotating shaft mechanism in the folded state and without the shaft cover removed;

[0080] Figure 17 for Figure 13A partial view of one end (upper left end) of the central pivot mechanism;

[0081] Figure 18 for Figure 14 A partial view of one end (upper left end) of the central pivot mechanism;

[0082] Figure 19 for Figure 15 A partial view of one end (upper left end) of the central pivot mechanism;

[0083] Figure 20a for Figure 17 Exploded view of the first swing arm, second swing arm, base and bearing cap;

[0084] Figure 20b for Figure 17 Exploded view of the second swing arm and base;

[0085] Figure 20c for Figure 14 CC section view of the rotating shaft mechanism in the middle without removing the shaft cover;

[0086] Figure 20d for Figure 14 CC section view of the rotating shaft mechanism in the folded state and without the shaft cover removed;

[0087] Figure 21 This is a schematic diagram showing the connection between the actuating element and the shaft cover in some embodiments of this application;

[0088] Figure 22 This is a schematic diagram of the connection between the toggle member and the rotating shaft in some embodiments of this application;

[0089] Figure 23 This is a cross-sectional view showing the connection relationship between the base, the bushing, and the actuating element in some embodiments of this application;

[0090] Figure 24 This is a cross-sectional view of the connection between the rotating shaft and the first swing arm in some embodiments of this application;

[0091] Figure 25 This is a schematic diagram showing the change in the positional relationship of the shaft cover under the action of the actuating part during the rotation of the shaft in some embodiments of this application;

[0092] Figure 26 This is a schematic diagram illustrating the relationship between the rotation angle of the first swing arm and the lifting amount of the shaft cover in some embodiments of this application.

[0093] Figure 27 This is a schematic diagram of a cavity being a circular hole in some embodiments of this application;

[0094] Figure 28 This is a schematic diagram showing the installation relationship between the actuating element and the shaft cover in some embodiments of this application;

[0095] Figure 29 This is a schematic diagram illustrating the installation relationship between the actuating element and the shaft cover in some other embodiments of this application;

[0096] Figure 30 for Figure 13 A partial view of the middle section of the central pivot mechanism;

[0097] Figure 31 for Figure 14 A partial view of the middle section of the central pivot mechanism;

[0098] Figure 32 for Figure 15 A partial view of the middle section of the central pivot mechanism;

[0099] Figure 33 for Figure 30 Exploded view of the first swing arm, second swing arm, base and bearing cap;

[0100] Figure 34 for Figure 17 Exploded view of the second swing arm and base;

[0101] Figure 35 This is a schematic diagram of the toggle element in some embodiments of this application;

[0102] Figure 36 for Figure 30 Exploded view of the first swing arm and base. Detailed Implementation

[0103] In the embodiments of this application, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" and "second" may explicitly or implicitly include one or more of that feature.

[0104] The terminal device in this application embodiment can be a foldable terminal device such as a mobile phone, tablet computer, or laptop computer. The following uses a mobile phone as an example to illustrate the specific structure of the folding mechanism in the terminal device. Other terminal devices can be set up with reference to the folding mechanism in the mobile phone embodiment, and will not be described in detail here.

[0105] like Figures 1-4 , Figure 5a and Figure 5b As shown, Figure 1 This is a schematic diagram of the terminal device (mobile phone) in its unfolded state in some embodiments of this application. Figure 2 for Figure 1 A structural diagram of the terminal device after removing the display screen 200. Figure 3 for Figure 2A schematic diagram of the structure on the back side of the terminal device in the diagram. Figure 4 for Figure 2 A schematic diagram of the terminal device in a folded state. Figure 5a This is a simplified structural diagram of the two sub-body 11 of the terminal device in some embodiments of this application in the unfolded state. Figure 5b This is a simplified structural diagram of the two sub-body 11 of the terminal device in some embodiments of this application in the folded state.

[0106] The terminal device includes a hinge mechanism 120, a main body, and a display screen 200. The main body includes two or more adjacent sub-bodies 11, which support the display screen 200. The hinge mechanism 120 is located at the junction of two sub-bodies 11, allowing the two sub-bodies 11 to be in an unfolded state (e.g., Figure 2 (as shown) and folded state (as shown) Figure 4 Switching between (as shown). In some terminal devices, the entire assembly consisting of the hinge mechanism 120 and the sub-body 11 can also be referred to as the "folding mechanism 100", that is, the terminal device includes the folding mechanism 100 and the display screen 200.

[0107] like Figure 1 As shown, when the two sub-body 11s are in the unfolded state, the outer contour of the terminal device is roughly rectangular. For the convenience of the description of the embodiments below, an XYZ coordinate system is established for the terminal device with the two sub-body 11s in the unfolded state. The length direction of the terminal device is defined as the X-axis direction (also called "direction X" or "X direction"), the width direction of the terminal device is defined as the Y-axis direction (also called "direction Y" or "Y direction"), and the thickness direction of the terminal device is defined as the Z-axis direction (also called "direction Z" or "Z direction"). The X-axis direction mentioned above is not limited to... Figure 1 The single direction indicated by the arrow on the X-axis should be understood as both positive and negative directions parallel to the X-axis, including the positive and negative X-axis directions. The same applies to the Y and Z directions. It is understood that the coordinate system settings of the terminal device can be flexibly configured according to actual needs, and no specific limitations are made here. Of course, the outline shape of the terminal device is not limited to rectangles; it can be square, circular, elliptical, etc., depending on the actual situation. When the outline shape of the terminal device is not rectangular, the Z-direction mentioned above still represents the thickness direction of the terminal device, while the surfaces defined by the X and Y directions are basically parallel to the display surface of the screen when the terminal device is in its unfolded state. Figure 2As shown, each sub-body 11 is a shell structure. For example, the sub-body 11 can be a middle frame. The sub-body 11 includes a bottom wall 12 (also called a "cover plate") and a side wall 13 located at the edge of the bottom wall 12. The bottom walls 12 and side walls 13 of the two sub-body 11 together form a setting space 10. The display screen 200 is set in the setting space 10. The display screen 200 itself has bendable properties and can be bent and deformed after being subjected to external force.

[0108] like Figure 1 , Figure 2 and Figure 5a As shown, when the two sub-body units 11 are in the unfolded state, the display screen 200 unfolds, exposing its display area to facilitate the display of image information to the user. The display screen 200 includes a first display area 210, a second display area 220, and a third display area 230. The first display area 210 covers the bottom wall 12 of one sub-body unit 11, the second display area 220 covers the bottom wall 12 of the other sub-body unit 11, and the third display area 230 covers the pivot mechanism 120.

[0109] The aforementioned display screen 200 may be entirely a flexible screen structure. For example, the first display area 210, the second display area 220, and the third display area 230 of the display screen 200 may all be flexible screen structures. Alternatively, the display screen 200 may have a flexible screen structure in the middle folded part, while the two sides are rigid screen structures. For example, the first display area 210 and the second display area 220 of the display screen 200 may be rigid screen structures, while the third display area 230 may be a flexible screen structure.

[0110] like Figure 4 and Figure 5b As shown, when the two sub-body units 11 are in the folded state, they are stacked on top of each other, and the display screen 200 is folded between the two sub-body units 11, which facilitates the carrying of the terminal device. The first display area 210 and the second display area 220 of the display screen 200 are stacked. Here, "stacked" means that the thickness directions of the first display area 210 and the second display area 220 are parallel or approximately parallel (for example, the deviation is within 30°). The first display area 210 and the second display area 220 can be attached together, or there can be a gap between the first display area 210 and the second display area 220. No specific limitation is made here.

[0111] When the two sub-body panels 11 are in a folded state, the third display area 230 is folded into a teardrop shape. In this shape, the third display area 230 includes an arc segment 233, a first transition segment 231, and a second transition segment 232. The first transition segment 231 connects the arc segment 133 and the first display area 210. The second transition segment 232 connects the arc segment 233 and the second display area 220. Figure 5b As shown, the first transition segment 231 and the second transition segment 232 are in a figure-eight shape. Specifically, the distance between the end of the first transition segment 231 connecting to the first display area 210 and the end of the second transition segment 232 connecting to the second display area 220 is the third distance; the distance between the end of the first transition segment 231 connecting to the arc segment 233 and the end of the second transition segment 232 connecting to the arc segment 233 is the fourth distance, which is greater than the third distance. It is understood that when the two sub-body panels 11 are in a folded state, the third display area 230 of the display screen 200 can also be folded into other shapes as needed, and this application does not impose any restrictions on this.

[0112] like Figure 5a and Figure 5b As shown, the hinge mechanism 120 includes a hinge cover 3. The hinge cover 3 serves as the external appearance component (i.e., the externally visible part) of the hinge mechanism 120, used to cover the moving parts (not shown in the figure) within the hinge mechanism 120 to ensure the appearance of the foldable screen device and prevent external interference with the movement of the moving parts within the hinge mechanism 120. To ensure the appearance of the foldable screen device during its movement between the unfolded and folded states, such as... Figure 5a and Figure 5b As shown, both sub-fusels 11 have overlapping portions 16, such as Figure 5a As shown, the overlapping portion 16 can be a step formed on the bottom wall 12 of the fuselage of the two sub-fusels 11. The overlapping portion 16 and the axle cover 3 have a certain overlap amount h (also called overlap amount). When the two sub-fusels 11 move from the unfolded state to the folded state, the overlap amount h gradually decreases; when the two sub-fusels 11 move from the folded state to the unfolded state, the overlap amount h gradually increases. During the movement of the two sub-fusels 11 between the unfolded and folded states, the minimum overlap amount is the overlap amount when the two sub-fusels 11 are in the folded state. This minimum overlap amount should be greater than or equal to 0 millimeters (mm). If the overlap amount h between the overlapping portion 16 and the axle cover 3 is insufficient, the overlapping portion 16 will separate from the axle cover 3 when the two sub-fusels 11 are in the folded state. That is, the axle cover 3 will be located outside the gap 14 formed by the two overlapping portions 16, and the moving parts inside the axle cover 3 will be exposed. External dust and other contaminants can easily fall onto the moving parts inside the axle cover 3, affecting its normal operation.

[0113] Therefore, embodiments of this application provide a rotating shaft mechanism to solve the above problems, such as... Figure 6a As shown, Figure 6a This is a schematic diagram of the terminal device in the first embodiment of this application. The rotating mechanism 120 includes a shaft cover 3, a base 21 (also called a "rotating base"), a swing arm 22, and a connecting component 6 (also called a "connecting mechanism" or "transmission mechanism"). The shaft cover 3 has a receiving space 35, and at least a portion of the base 21 is disposed in the receiving space 35. The connecting component 6 is connected between the swing arm 22 and the shaft cover 3. When the swing arm 22 rotates from the unfolded position to the folded position, the swing arm 22 drives the shaft cover 3 to move in a direction close to the base 21 through the connecting component 6. With this configuration, during the folding process, the swing arm 22 of the rotating mechanism 120 drives the shaft cover 3 to move relative to the base 21 through the connecting component 6 to "lift" the shaft cover 3. This increases the overlap between the shaft cover 3 and the sub-body 11 when the terminal device is in the folded state, thereby reducing the gap between the shaft cover 3 and the sub-body 11, and allowing the shaft cover 3 to effectively prevent external water, dust, etc. from entering the interior of the terminal device.

[0114] In some embodiments, the shaft cover 3 includes a shaft cover wall 31, the shaft cover wall 31 forming a receiving space 35, for example, such as Figure 6a As shown, the shaft cover wall 31 includes a shaft cover bottom wall and a shaft cover side wall disposed at the periphery of the shaft cover bottom wall. The shaft cover bottom wall and the shaft cover side wall form an accommodating space 35, which is a trapezoidal groove. In addition to the above structure, the cross-section of the shaft cover wall 31 can also be U-shaped, semi-circular, arc-shaped, etc., which can be set according to the actual situation.

[0115] The base 21 is used to support part of the display screen 200. Specifically, the base 21 is used to support... Figure 1 The third display area 230 of the display screen 200 of the terminal device shown is, that is, one side of the base 21. Figure 6a The upper side of the base 21 has a mounting space 10 for accommodating the display screen 200.

[0116] A portion (or all) of the base 21 is disposed in the receiving space 35. The swing arm 22 is rotatably connected to the base 21, and the swing arm 22 is also directly or indirectly movably connected to the sub-body 11. Thus, when the display screen 200 is folded or unfolded, the swing arm 22 can rotate relative to the base as the sub-body 11 rotates, and at the same time, during the rotation, it drives the shaft cover 3 to "lift" along the direction close to the base 21.

[0117] In some embodiments, the swing arm 22 is slidably connected to the sub-body 11. For example, the swing arm 22 is provided with a sliding engagement part b, and the sub-body 11 is provided with a groove a. The sliding engagement part b is slidably engaged with the groove a. The sliding engagement part b can be plate-shaped, column-shaped, spherical, etc., and is not specifically limited here. The sliding connection between the swing arm 22 and the sub-body 11 is to ensure that the mechanism formed by the sub-body 11, the base 21, and the swing arm 22 has one degree of freedom, that is, it can rotate in the plane defined by the X and Z directions, so as to ensure that the two sub-body 11 can be smoothly unfolded and folded, and to avoid problems such as screen tilting during the folding and unfolding process.

[0118] In some embodiments, there are two swing arms 22. Along the width direction of the shaft cover 3 (X-axis direction in the figure), the two swing arms 22 are symmetrically arranged on opposite sides of the base 21. The two swing arms 22 are slidably connected to the two sub-body 11 respectively, and both swing arms 22 can be rotatably connected to the base 21.

[0119] When both sub-fusels 11 are in the deployed state, both swing arms 22 are in the deployed position, such as Figure 6a As shown, when the two sub-fusels 11 are in the folded state, both swing arms 22 are in the folded position. When the two sub-fusels 11 switch to the folded state, the swing arms 22 rotate relative to the base 21 towards the folded position. When the two sub-fusels 11 switch to the unfolded state, the swing arms 22 rotate relative to the base 21 towards the unfolded position.

[0120] The connecting assembly 6 connects the rocker arm 22 and the shaft cover 3, and is the main component that drives the rocker arm 22 to move the shaft cover 3. Figure 6a As shown, this illustrates a first embodiment of the terminal device (also referred to as the "first structure"). The connecting assembly 6 includes a winding roller 642, a connecting wire 641, and a rotating shaft 625. The swing arm 22 is rotatably connected to the base 21 via the rotating shaft 625. The winding roller 642 is sleeved on the rotating shaft 625. One end of the connecting wire 641 near the base 21 is wound around the winding roller 642, and the other end of the connecting wire 641 away from the base 21 is connected to the shaft cover 3.

[0121] Further reference Figure 6a When using the connecting assembly 6 shown in the figure, a reset member 47 is provided between the base 4 and the shaft cover 3. The reset member 47 is used to apply a reset force to the shaft cover 3, causing the shaft cover 3 to move relative to the base 4 in a direction away from the base 21 (downward direction in the figure). For example, the reset member 47 is a spring, which is in a compressed state. One end of the spring abuts against the base 21, and the other end of the spring abuts against the shaft cover 3. Here, "abutting" means that there is point contact, line contact, or surface contact between the two components. For example, the spring has point contact, line contact, or surface contact with the base 21 and the shaft cover 3.

[0122] The aforementioned reset component 47 can be provided in one or more ways, and no specific limitation is made here.

[0123] It is understood that the aforementioned reset component 47 is also suitable for use with other connecting components 6. It can be used whenever a separate reset mechanism is required for the shaft cover 3. Figure 6a The reset component 47 in the middle.

[0124] The following is based on Figure 6a The process of folding and unfolding the terminal device of this application is illustrated by taking the left-side swing arm 22 and the sub-body 11 as examples:

[0125] During the transition of the two sub-body 11 to the folded state, the swing arm 22 rotates clockwise with the sub-body 11 (that is, rotates towards the folded position relative to the base 21), and the rotating shaft 625 drives the winding roller 642 to rotate clockwise, so that the connecting wire 641 is gradually wound around the winding roller 642, thereby driving the shaft cover 3 to move in a direction closer to the base 21 (the upward direction in the figure, which is also the positive direction of the Z-axis), so as to achieve the "lifting" of the shaft cover 3. During the transition of the two sub-body 11 to the unfolded state, the swing arm 22 swings counterclockwise with the sub-body 11 (that is, rotates towards the unfolded position relative to the base 21), and drives the winding roller 642 to rotate counterclockwise through the rotating shaft 625, so as to unwind the connecting wire 641 wound on the winding roller 642. At this time, under the action of the reset force of the reset member 47, the shaft cover 3 moves away from the base 21 (the downward direction in the figure, which is also the negative direction of the Z-axis), so as to achieve the "lowering" of the shaft cover 3.

[0126] Specifically, the movement of the bearing cap 3 in the direction close to the base 21 means that the movement of the bearing cap 3 causes the base 21 to extend into the receiving space 35 relative to the bearing cap 3. The movement of the bearing cap 3 in the direction away from the base 21 means that the movement of the bearing cap 3 causes the base 21 to extend outward from the receiving space 35 relative to the bearing cap 3. Using the base 21 as a positional reference, based on... Figure 6a As shown in the orientation relationship, the movement of the cover 3 along the direction close to the base 21 is also called upward movement. The movement of the cover 3 away from the base 21 is also called downward movement. Among them, the upward and downward movements of the cover 3 can be movements along a first direction (the Z-axis direction in the figure), which is perpendicular to the width direction (X-axis direction in the figure) and the length direction (Y-axis direction in the figure) of the cover 3. The Z-axis can also be regarded as the depth direction of the accommodating space, that is, the direction perpendicular to the display surface of the display screen 200 when the display screen 200 is unfolded into a plane.

[0127] Of course, the trajectory of the upward or downward movement of the bearing cover 3 is not limited to being parallel to the first direction; it can also be tilted at a certain angle relative to the first direction, such as within 10°. It should be noted that when the trajectory of the upward or downward movement of the bearing cover 3 is tilted at an angle of less than 5° relative to the first direction, it can be considered that the bearing cover 3 is moving along the first direction.

[0128] In some embodiments, such as Figure 6a As shown, there are two connecting components 6. Each swing arm 22 is connected to the shaft cover 3 via a connecting component 6, increasing the number of connection points between the shaft cover 3 and the swing arm 22. During the transition of the two sub-body 11 to the folded state, the two swing arms 22 are connected to the shaft cover 3 via the connecting components 6 to drive the shaft cover 3 to move upward. In this way, the shaft cover 3 is subjected to more balanced forces during movement, resulting in a smoother upward movement of the shaft cover 3. In addition, in some other embodiments, a single connecting component 6 can be provided, which connects one swing arm 22 to the shaft cover 3. In this way, when the swing arm 22 rotates from the unfolded position to the folded position, the shaft cover 3 can also be driven to move upward via a single connecting component 6.

[0129] In some embodiments, to make the movement of the shaft cover 3 more stable under the drive of the connecting assembly 6, the shaft cover 3 is slidably connected to the base 3 along the Z-axis direction (that is, there is a sliding constraint between the shaft cover 3 and the base 21 in the Z-axis direction). As one implementation of this sliding connection, such as... Figure 6a As shown, for example, the shaft cover 3 is provided with a sliding rod (as indicated by the symbol c1 in the figure), and the base 21 is provided with a sliding hole (as indicated by the symbol c2 in the figure), with the sliding rod and the sliding hole slidingly engaged. This design can prevent the shaft cover 3 from shaking when the swing arm 22 moves it closer to the base 21, thus making the movement of the shaft cover 3 more stable.

[0130] like Figure 6b As shown, Figure 6b This is a schematic diagram of the terminal device in the second embodiment of this application. Figure 6b The illustrated embodiments and Figure 6a The main difference in the illustrated embodiment lies in the structure of the connecting component 6. Figure 6b In the embodiment shown, the connecting component 6 includes a connecting rod 65, one end of which is rotatably connected to the swing arm 22, and the other end of which is rotatably connected to the shaft cover 3.

[0131] Taking the left-side swing arm 22, connecting rod 65, and sub-body 11 as examples, the process of folding and unfolding the terminal device in this embodiment is explained as follows: During the process of switching the two sub-body 11 to the folded state, the swing arm 22 rotates counterclockwise relative to the base 21, and drives the shaft cover 3 to move in the direction close to the base 21 (upward direction in the figure) through the connecting rod 65, so as to achieve the "lifting" of the shaft cover 3; During the process of switching the two sub-body 11 to the unfolded state, the swing arm 22 rotates clockwise relative to the base 21, and at the same time as the swing arm 22 rotates clockwise, it drives the shaft cover 3 to move away from the base 21 (downward direction in the figure) through the connecting rod 65, so as to achieve the "lowering" of the shaft cover 3.

[0132] like Figure 6c As shown, Figure 6c This is a schematic diagram of the terminal device in the third embodiment of this application. Figure 6c The illustrated embodiments and Figure 6a The main difference in the illustrated embodiment lies in the structure of the connecting component 6. Figure 6c In the embodiment shown, the connecting component 6 includes a rotating shaft 625, a gear 661, and a rack 662.

[0133] The swing arm 22 is rotatably connected to the base 21 via a rotating shaft 625. The swing arm 22 is fixed relative to the rotating shaft 625 in the circumferential direction. A gear 661 is sleeved on the rotating shaft 625, and a rack 662 is fixedly connected to the shaft cover 3. One end of the rack 662 is located close to the base 21, and the other end is located away from the base 21. The gear 661 meshes with the rack 662. For example, the rack 662 extends along the Z-axis direction.

[0134] by Figure 6c The process of folding and unfolding the terminal device in this embodiment is illustrated by taking the swing arm 22 located on the left side and the sub-body 11 as examples:

[0135] During the transition of the two sub-fusels 11 to the folded state, the swing arm 22 swings clockwise with the sub-fuselage 11 and drives the gear 661 to rotate clockwise via the rotating shaft 625. Then, the gear 661 drives the axle cover 3 to move in the direction closer to the base 21 (upward in the figure) via the rack 662, thereby "lifting" the axle cover 3. During the transition of the two sub-fusels 11 to the unfolded state, the swing arm 22 swings counterclockwise with the sub-fuselage 11 and drives the gear 661 to rotate counterclockwise via the rotating shaft 625. Then, the gear 661 drives the axle cover 3 to move away from the base 21 (downward in the figure) via the rack 662, thereby "lowering" the axle cover 3.

[0136] like Figure 6d As shown, Figure 6d This is a schematic diagram of the terminal device in the fourth embodiment of this application. Figure 6dThe illustrated embodiments and Figure 6a The main difference in the illustrated embodiment lies in the structure of the connecting component 6. Figure 6d In the illustrated embodiment, the swing arm 22 is rotatably connected to the base 21 via a rotation shaft 625. The connecting assembly 6 includes a deflector 60. When the swing arm 22 rotates from the unfolded position to the folded position, the deflector 60 rotates with the swing arm 22 to drive the shaft cover 3 to move in a direction close to the base 21. The deflector 60 is connected to the swing arm 22 at a position offset from the axis O1 of the rotation shaft 625. The deflector 60 is connected to the shaft cover 3 in the Z-axis direction (i.e., the first direction) at an upper limit. In other words, the deflector 60 can drive the shaft cover 3 to move in the Z-axis direction.

[0137] It can be understood that a part of the actuating element 60 is connected to the swing arm 22, and the other part is connected to the shaft cover 3. When the swing arm 22 rotates, it drives the actuating element 60 to rotate. The part of the actuating element 60 connected to the shaft cover 3 can realize the conversion between rotation and translation, so that it can directly or indirectly drive the shaft cover 3 to move in the Z direction during the rotation process.

[0138] For example, the actuating member 60 is a raised structure. The actuating member 60 is columnar and parallel or approximately parallel to the rotating shaft 625 (with a deviation within 5°). The shaft cover 3 is provided with a groove c3, which extends along the X-axis direction (that is, the width direction of the shaft cover 3). The actuating member 60 extends into the groove c3 so that the actuating member 60 can slide relative to the groove c3 along the X-axis direction.

[0139] Among them, such as Figure 6d As shown, the actuating element 60 can be directly connected to the swing arm 22, or it can be connected to the swing arm 22 by means of snap-fit, screw-fit, adhesive, or plug-in. Alternatively, the actuating element 60 can also be indirectly connected to the swing arm 22, for example... Figure 6e As shown, Figure 6e This is a schematic diagram of the terminal device in the fifth embodiment of this application. The actuating member 60 is connected to the swing arm 22 via the swing arm connecting rod 69. One end of the swing arm connecting rod 69 is fixedly connected to the swing arm 22, and the other end of the swing arm connecting rod 69 is connected to the actuating member 60. The actuating member 60 can be connected to the end of the swing arm connecting rod 69 by means of snap-fit, screw-fit, adhesive, plug-in, etc.

[0140] like Figure 6e As shown, the swing arm link 69 and the swing arm 22 are an integral structure, but it is not limited to this. The swing arm link 69 and the swing arm 22 can also be set separately and fixedly connected by fasteners such as screws.

[0141] by Figure 6d and Figure 6e Taking the swing arm 22 located on the left side and the sub-body 11 as examples, the folding and unfolding motion process of the terminal device in this application embodiment is illustrated as follows:

[0142] like Figure 6d and Figure 6e As shown, during the switching of the two sub-body 11 to the folded state, the swing arm 22 swings clockwise with the sub-body 11. The actuating component 60 connected to the swing arm 22 moves to the upper right and abuts against the shaft cover 3. For example, the swing arm 22 abuts against the upper side wall of the groove c3 in the shaft cover 3. Through the limiting constraint between the actuating component 60 and the shaft cover 3, the upward movement component of the actuating component 60 drives the shaft cover 3 to move in the direction close to the base 21 (the upward direction in the figure) to achieve the "lifting" of the shaft cover 3. During the transition of the two sub-fusels 11 to the unfolded state, the swing arm 22 swings counterclockwise with the sub-fusel 11. The actuating component 60 connected to the swing arm 22 moves to the lower left and abuts against the shaft cover 3. For example, the swing arm 22 abuts against the lower side wall of the groove c3 in the shaft cover 3. Through the limiting constraint between the actuating component 60 and the shaft cover 3, the downward movement component of the actuating component 60 drives the shaft cover 3 to move away from the base 21 (downward direction in the figure) to achieve the "lowering" of the shaft cover 3.

[0143] like Figure 6f As shown, Figure 6f This is a schematic diagram of the terminal device in the sixth embodiment of this application. This embodiment is similar to... Figure 6d , Figure 6e The main difference between the embodiments shown is the structure of the toggle member 60.

[0144] exist Figure 6f In the embodiment shown, the actuating member 60 includes a rotating shaft 62 and an eccentric portion 61 that is eccentrically disposed relative to the rotating shaft 62. For example, the eccentric portion 61 is columnar, and the central axis of the eccentric portion 61 is not coaxial with the central axis of the rotating shaft 62.

[0145] The aforementioned eccentric part 61 can be an eccentric block, an eccentric column, an eccentric wheel, etc., and is not specifically limited here.

[0146] Next Figure 6fTaking the swing arm 22 and sub-body 11 located on the left side as an example, the process of folding and unfolding the terminal device of this application is explained as follows: During the process of switching the two sub-body 11 to the folded state, the sub-body 11 rotates clockwise relative to the base 4, thereby driving the swing arm 22 to rotate clockwise, and the rotating shaft 62 also rotates clockwise, so as to drive the eccentric part 61 to move to the upper right. Through the limiting constraint between the eccentric part 61 and the shaft cover 3, the upward movement component of the eccentric part 61 drives the shaft cover 3 to move in the direction close to the base 21 (that is, the upward direction in the figure), so as to realize the "lifting" of the shaft cover 3. During the transition of the two sub-fusels 11 to the unfolded state, the sub-fusels 11 rotate counterclockwise relative to the base 4, thereby causing the swing arm 22 to rotate counterclockwise, and the rotating shaft 62 also rotates counterclockwise, so as to drive the eccentric part 61 to move to the lower left. Through the limiting constraint between the eccentric part 61 and the shaft cover 3, the downward motion component of the eccentric part 61 drives the shaft cover 3 to move away from the base 21 (that is, the downward direction in the figure), thereby realizing the "lowering" of the shaft cover 3.

[0147] Therefore, when the swing arm 22 rotates from the unfolded position to the folded position, the actuating member 60 rotates with the swing arm 22 to drive the shaft cover 3 to move in the direction close to the base 21.

[0148] In the connecting assembly 6, the eccentric part 61 is eccentrically set with the rotating shaft 62. This way, when the swing arm 22 drives the rotating shaft 62 to rotate, the space occupied by the movement trajectory of the eccentric part 61 is relatively small, and it is not easy to interfere with other components.

[0149] like Figure 6g As shown, Figure 6g This is a schematic diagram of the terminal device in the seventh embodiment of this application. Figure 6g The illustrated embodiments and Figure 6f The main difference in the illustrated embodiment lies in the different structure of the swing arm 22.

[0150] exist Figure 6g In the embodiment shown, the swing arm 22 includes a first swing arm 26 (also called the main swing arm) and a second swing arm 23 (also called the slave swing arm), both of which are rotatably connected to the base 21. The first swing arm 26 is fixedly connected to the sub-body 11, and the first swing arm 26 is also slidably connected to the second swing arm 23. For example, the second swing arm 23 is provided with a groove m1, and the first swing arm 26 is provided with a sliding engagement part m2, which is slidably engaged with the groove m1.

[0151] The second swing arm 23 is connected to the shaft cover 3 via the connecting assembly 6. The second swing arm 23 has an unfolded position and a folded position. The first swing arm 26 can drive the second swing arm 23 to rotate relative to the base 21 between the unfolded and folded positions. When the second swing arm 23 is in the unfolded position, the two sub-fusels 11 are in the unfolded state. When the second swing arm 23 is in the folded position, the two sub-fusels 11 are in the folded state (e.g., ...). Figure 6g(As shown).

[0152] by Figure 6g Taking the second swing arm 23, the first swing arm 26, and the sub-body 11 located on the left side as an example, the folding and unfolding process of the terminal device in this application embodiment is explained as follows: During the switching of the two sub-body 11 to the folded state, the first swing arm 26 swings clockwise with the sub-body 11. Through the sliding constraint between the first swing arm 26 and the second swing arm 23, the first swing arm 26 drives the second swing arm 23 to swing clockwise while swinging. Then, through the actuating member 60, the shaft cover 3 is driven to move in the direction close to the base 21 to achieve the "lifting" of the shaft cover 3. During the switching of the two sub-body 11 to the unfolded state, the first swing arm 26 swings counterclockwise with the sub-body 11. Through the sliding constraint between the first swing arm 26 and the second swing arm 23, the first swing arm 26 drives the second swing arm 23 to swing counterclockwise while swinging. Then, through the actuating member 60, the shaft cover 3 is driven to move relative to the base 21 in the direction away from the base 21 to achieve the "lowering" of the shaft cover 3.

[0153] By configuring the swing arm 22 as a first swing arm 26 and a second swing arm 23, with the first swing arm 26 fixedly connected to the sub-body 11 and the first swing arm 26 and the second swing arm 23 slidably connected, the mechanism formed by the sub-body 11, the first swing arm 26, the second swing arm 23, and the base 21 has one degree of freedom. This ensures that the two sub-body 11 can be smoothly unfolded and folded, and allows the base and the axle cover to move relative to each other along the first direction, preventing the axle cover from wobbling relative to the base. Simultaneously, this design eliminates the need for a sliding connection structure on the sub-body 11 to connect with the swing arm 22, simplifying the connection between the swing arm 22 and the sub-body 11 and improving the reliability of the connection.

[0154] Of course, it is also possible to Figure 6d The middle swing arm 22 is configured as the first swing arm 26 and the second swing arm 23, as follows: Figure 6h As shown, Figure 6h This is a schematic diagram of the terminal device in the eighth embodiment of this application. For details regarding the connection relationship between the first swing arm 26 and the base 21, and the second swing arm 23, please refer to... Figure 6g The method for setting it up is described in the documentation and will not be elaborated upon here.

[0155] The above Figures 6d to 6h In the embodiment shown, the rocker arm 22 drives the actuating member 60 to move, thereby causing the actuating member 60 to "lift" the shaft cover 3. This makes the connection structure between the connecting component 6 and the shaft cover 3 relatively simple, and the number of parts in the connecting component 6 is relatively small. This not only helps to reduce costs, but also helps to improve the connection reliability between the connecting component 6 and the shaft cover 3.

[0156] The above Figures 6b to 6hIn the embodiment shown, the connecting component 6 can both drive the shaft cover 3 to move relative to the base 21 in a direction close to the base 21 to achieve "lifting" of the shaft cover 3, and drive the shaft cover 3 to move relative to the base 21 in a direction away from the base 21 to achieve "lowering" of the shaft cover 3. This allows for better control of the movement of the shaft cover 3, eliminating the need for additional reset components to reset the shaft cover 3, thereby improving the reliability of the movement of the shaft cover 3.

[0157] The above Figures 6a to 6h As shown, by constraining the cover 3 to slide relative to the base 21 along the Z-axis, the cover 3 can drive the swing arms 22 on both sides to move synchronously through the connecting component 6 when it moves along the Z-axis, thereby enabling the sub-body 11 on both sides to move synchronously.

[0158] It is understandable that due to manufacturing or assembly tolerances, the two swing arms 22 (which can be either the first swing arm 26 or the second swing arm 23) may have a certain angular deviation during rotation. Typically, this angular deviation can range from 0 to 20 degrees, and within this range, it can still be considered synchronous motion. Optionally, in practical use, other synchronization mechanisms can be used to achieve the corresponding synchronization effect.

[0159] like Figure 6i As shown, Figure 6i This is a schematic diagram of the terminal device in the ninth embodiment of this application. Figure 6i The rotating shaft mechanism 120 shown is in Figure 6g The pivot mechanism 120 shown is supplemented with a support member 27 and a third swing arm 281.

[0160] exist Figure 6i In the embodiment shown, the rotating shaft mechanism 120 further includes a support member 27 and a third swing arm 281. One side of the support member 27 has a mounting space 10 for mounting the display screen 200. The swing arm 22 is located on the side of the support member 27 away from the mounting space 10. The support member 27 and the swing arm 22 are rotatably connected. Specifically, the support member 27 is rotatably connected to the first swing arm 26.

[0161] The third swing arm 281 is rotatably connected to the base 21, and the third swing arm 281 is also slidably connected to the support member 27. For example, the support member 27 is provided with a mating groove 271, and the third swing arm 281 is slidably mated with the mating groove 271.

[0162] During the transition between the two sub-body units 11 and their folded state, the first swing arm 26 can drive the support member 27 to swing relative to the base 21, thereby allowing the support member 27 to support the bent portion of the display screen 200. Figure 1 The third display area (230) is well supported and protected.

[0163] By slidingly connecting the support member 27 to the third swing arm 281 and rotatably connecting it to the first swing arm 26, the mechanism formed by the sub-body 11, the first swing arm 26, the support member 27, the third swing arm 281 and the base 21 can have a degree of freedom of 1, thereby ensuring that the first swing arm 26 can smoothly drive the support member 27 to swing during the process of switching between the two sub-body 11 to the folded state.

[0164] The shape of the aforementioned support member 27 can be a plate-like structure or a frame structure, etc., and is not specifically limited here. When the support member 27 is a plate-like structure, the support member 27 can also be called a door panel, and the corresponding third swing arm 281 can also be called a door panel swing arm.

[0165] Through the above Figures 6a to 6i In the embodiment described above, the connecting component 6 is connected between the swing arm 22 and the shaft cover 3. When the swing arm 22 rotates from the unfolded position to the folded position, the swing arm 22 can drive the shaft cover 3 to move in the direction close to the base 21 through the connecting component 6, so as to "lift" the shaft cover 3. This increases the overlap between the shaft cover 3 and the sub-body 11 when the two sub-body 11 are in the folded state, thereby reducing the gap between the shaft cover 3 and the sub-body 11, so that the shaft cover 3 can effectively block external water, dust and other substances from entering the interior of the terminal device.

[0166] The following section uses the product structure diagram of the terminal equipment to illustrate... Figures 6d to 6i The schematic diagram of the rotating shaft mechanism 120 shown is described in detail.

[0167] like Figures 7-12 As shown, Figure 7 for Figure 2 The exploded view of the terminal device shown. Figure 8 for Figure 2 The exploded view of the terminal device shown is from another perspective (rear side view). Figure 9 This is an exploded view of the base 21 and the shaft cover 3 in some embodiments of this application. Figure 10 for Figure 9 Partial view of base 21 and shaft cover 3 shown. Figure 11 for Figure 2 The terminal device shown is an AA cross-sectional view. Figure 12 for Figure 2 The AA section view of the terminal device in the folded state.

[0168] like Figure 11 and Figure 12As shown, the shaft cover 3 is slidably connected to the base 21 along a first direction (the Z-axis direction in the figure). This first direction is perpendicular to both the length direction (the Y-axis direction in the figure) and the width direction (the X-axis direction in the figure) of the shaft cover 3. With this design, the shaft cover 3 is subjected to relatively balanced forces when it moves under the drive of the connecting component 6, making it less prone to tilting and preventing problems such as jamming.

[0169] The first direction is perpendicular to both the length direction and the width direction of the shaft cover 3. It can be either absolutely perpendicular or approximately perpendicular, for example, with a deviation within ±5 degrees.

[0170] For ease of description, the Z-axis direction will be used to represent the first direction in the following text, the width direction of the shaft cover 3 will be represented by the X-axis direction, and the length direction of the shaft cover 3 will be represented by the Y-axis direction.

[0171] There are several ways to achieve a sliding connection between the shaft cover 3 and the base 21 in the Z-axis direction. In some embodiments, the shaft cover 3 is provided with a limiting groove 30 that slides with the base 21. The depth direction of the limiting groove 30 is parallel to the Z-axis direction, so that the base 21 and the limiting groove 30 can slide relative to each other in the depth direction of the limiting groove 30, thereby achieving... Figure 6i The central cover 3 and the base 21 are slidably connected in the Z-axis direction.

[0172] Combination Figure 12 The parallelism of the groove depth direction and the Z-axis direction of the limiting groove 30 can be understood as the groove wall 30a on one side of the groove width direction being parallel to the Z-axis direction. The groove wall 30a and the Z-axis direction can be absolutely parallel or approximately parallel, for example, the deviation is within ±5 degrees.

[0173] By setting a limiting groove 30 to cooperate with the base 21, the limiting groove 30 can better guide the shaft cover 3 when it moves, allowing the shaft cover 3 to move more smoothly along the Z-axis. At the same time, since the structure of the limiting groove 30 is relatively robust, the structure of the limiting groove 30 is not easily damaged under the action of external forces, thereby improving the connection reliability between the shaft cover 3 and the base 21.

[0174] Of course, in addition to sliding connection through the limiting groove 30, the shaft cover 3 and the base 21 can also be slidingly connected through hole-shaft cooperation. For example, the base 21 is provided with a sliding hole that extends along the Z-axis, and the shaft cover connector 32 is provided with a sliding column that slides in cooperation with the sliding hole.

[0175] In some embodiments, such as Figure 9 and Figure 10As shown, the shaft cover 3 includes a shaft cover wall 31 and a shaft cover connector 32. The shaft cover wall 31 encloses a receiving space 35. A portion (or all) of the shaft cover connector 32 is disposed within the receiving space 35. The shaft cover connector 32 is detachably connected to the shaft cover wall 31. The shaft cover connector 32 is slidably connected to the base 21 along the Z-axis direction. For example, a limiting groove 30 is provided on the shaft cover connector 32, and the base 21 slides in conjunction with the limiting groove 30. With this design, when the sliding connection structure between the shaft cover 3 and the base 21 is damaged, the sliding connection structure can be repaired by disassembling and replacing the shaft cover connector 32, without replacing the entire shaft cover 3, thus reducing maintenance costs. Furthermore, placing the shaft cover connector 32 within the receiving space 35 reduces the space occupied by the connector 32.

[0176] Among them, such as Figure 10 As shown, the shaft cover connector 32 is detachably connected to the shaft cover wall 31 via fasteners (such as screws), but it is not limited to this; the shaft cover connector 32 can also be detachably connected to the shaft cover wall 31 via snap-fit, plug-in, or other methods. Figure 10 As shown, the cross-section of the shaft cover wall 31 is U-shaped, but it is not limited to this. The cross-section of the shaft cover wall 31 can also be arc-shaped or other shapes.

[0177] In some embodiments, such as Figure 9 As shown, multiple shaft cover connectors 32 are provided, such as three, and these multiple shaft cover connectors 32 are arranged at intervals along the Y-axis direction. This design allows for multiple connection points between the shaft cover 3 and the base 21. When the shaft cover 3 slides relative to the base 21 along the Z-axis direction, it helps to balance the forces on the shaft cover 3 in its length direction Y, thereby making the movement of the shaft cover 3 more stable.

[0178] like Figures 13-15 as well as Figure 16a As shown, Figure 13 This is a schematic diagram of the structure of the pivot mechanism 120 (with one side of the support member 27 removed) in some embodiments of this application in an unfolded state, viewed from a certain angle (from the side where the display screen 200 is installed). Figure 14 This is a schematic diagram of the structure of the rotating shaft mechanism 120 in some embodiments of this application when it is in the unfolded state, viewed from another perspective (from the side where the shaft cover 3 is provided). Figure 15 This is a schematic diagram of the rotating shaft mechanism 120 in some embodiments of this application when it is in a folded state (a pair of second swing arms 23 and first swing arms 26 have been removed). Figure 16a for Figure 15 A schematic diagram of the rotating shaft mechanism 120 from another perspective.

[0179] Along the width direction X of the shaft cover 3, swing arms 22 are provided at both sides of the shaft cover 3. This increases the number of connection points between the shaft cover 3 and the connecting assembly 6 in the width direction X, making the force on the shaft cover 3 in the width direction X more balanced, thereby making the movement of the shaft cover 3 driven by the connecting assembly 6 more stable.

[0180] In some embodiments, the swing arm 22 includes a first swing arm 26 and a second swing arm 23. Both the first swing arm 26 and the second swing arm 23 are rotatably connected to the base 21. The first swing arm 26 is used to be fixedly connected to the sub-body 11. For example, the first swing arm 26 can be fixedly connected to the sub-body 11 by fasteners such as screws.

[0181] In some embodiments, such as Figure 15 and Figure 16a As shown, there are multiple swing arms 22 located on the same side edge of the shaft cover 3, and these multiple swing arms 22 are arranged along the Y-axis. With this design, the shaft cover 3 can have multiple connection points with the connecting component 6 along its length Y, and the force on the shaft cover 3 along its length Y is more even, thus making the movement of the shaft cover 3 under the drive of the connecting component 6 more stable.

[0182] For example, such as Figure 15 and Figure 16a As shown, there are three swing arms 22 located on the same side edge of the shaft cover 3. The three swing arms 22 are respectively located at the two ends and the middle of the shaft cover 3.

[0183] Of course, in other embodiments, the number of swing arms 22 located on the same side edge of the shaft cover 3 may also be one, and the swing arm 22 is located at the middle position of the shaft cover 3 along its length direction Y.

[0184] The following is about Figures 13-15 as well as Figure 16a The structure and installation method of the swing arm 22, which is located at one end of the shaft cover 3, will be described in detail:

[0185] like Figures 17-23 As shown, Figure 17 for Figure 13 A partial view of one end (upper left end) of the central pivot mechanism 120. Figure 18 for Figure 14 A partial view of one end (upper left end) of the central pivot mechanism 120. Figure 19 for Figure 15 A partial view of one end (upper left end) of the central pivot mechanism 120. Figure 20a for Figure 17 Exploded view of the second swing arm 23, the first swing arm 26, the base 21, and the shaft cover 3. Figure 20b for Figure 17Exploded view of the first swing arm 26 and base 21 in the middle. Figure 21 This is a schematic diagram showing the connection between the actuating part 61 and the shaft cover 3 in some embodiments of this application. Figure 22 This is a schematic diagram of the structure of the toggle member 60 in some embodiments of this application. Figure 23 This is a cross-sectional view showing the connection relationship between the base 21, the shaft cover 3, and the actuating member 60 in some embodiments of this application.

[0186] like Figure 17 , Figure 18 and Figure 19 As shown, the swing arm 22 includes a first swing arm 26 and a second swing arm 23. The first swing arm 26 is fixedly connected to the sub-body 11. Both the first swing arm 26 and the second swing arm 23 are rotatably connected to the base 21. The second swing arm 23 has an extended position and a folded position. The first swing arm 26 is connected to the second swing arm 23 through a first connecting structure 24, so that the first swing arm 26 drives the second swing arm 23 in the extended position (e.g., ...). Figure 17 and Figure 18 (as shown) and folding position (as shown) Figure 19 (As shown) rotates relative to base 21.

[0187] The first swing arm 26 can be fixedly connected to the sub-body 11 by fasteners (such as screws), but it is not limited to this. The first swing arm 26 and the sub-body 11 can also be fixedly connected by snap-fit, plug-in or other methods.

[0188] The first swing arm 26 can be rotatably connected to the base 21 through the following structure, as in some embodiments, such as Figure 20b , Figure 20c as well as Figure 20d As shown, Figure 20c for Figure 14 CC section view of the rotating shaft mechanism 120 without removing the shaft cover 3. Figure 20d for Figure 14 The image shows a CC cross-sectional view of the rotating shaft mechanism 120 in its folded state with the shaft cover 3 intact. The base 21 has a first arc-shaped groove 210, and the first swing arm 26 has a first arc-shaped piece 263. The first arc-shaped piece 263 slides in conjunction with the first arc-shaped groove 210, allowing the first swing arm 26 to be rotatably connected to the base 21. Due to the sliding engagement between the first arc-shaped piece 263 and the first arc-shaped groove 210, the contact area between them is larger, making it less prone to wobbling when sliding relative to the first arc-shaped groove 210, thus ensuring smoother rotation of the first swing arm 26 relative to the base 21.

[0189] In some embodiments, such as Figure 20a as well as Figure 20bAs shown, the base 21 includes a base body 211 and a base connector 214 that is detachably connected to the base body 211. The base body 211 and the base connector 214 form a first arc-shaped groove 210.

[0190] This design allows for easy disassembly of the first arc-shaped groove 210, facilitating cleaning of the interior of the first arc-shaped groove 210 and installation and disassembly of the first swing arm 26.

[0191] The first arc-shaped groove 210 can be formed by the following structure, such as Figure 20a as well as Figure 20b As shown, the base body 211 has an arc-shaped protrusion a, and the base connector 214 has a cavity with an arc-shaped wall b. When the base connector 21 is installed on the base body 211, a first arc-shaped groove 210 is formed between the arc-shaped protrusion a and the arc-shaped wall b of the cavity.

[0192] like Figure 18 and Figure 20a As shown, the base body 211 and the base connector 214 are detachably connected by fasteners (such as screws), but this is not the only possibility. The base body 211 and the base connector 214 can also be detachably connected by snap-fit, plug-in or other means.

[0193] The first connection structure 24 is not unique; in some embodiments, such as... Figure 17 and Figure 18 As shown, the first connecting structure 24 includes a groove 232 and a sliding part 261. The groove 232 is disposed on the second swing arm 23, and the sliding part 261 is disposed on the first swing arm 26. One end of the groove 232 is disposed near the base 21, and the other end of the groove 232 is disposed away from the base 21. The sliding part 261 slides in conjunction with the groove 232 to allow the first swing arm 26 to slide in connection with the second swing arm 23. By setting the first connecting structure 24 to a structure in which the sliding part 261 and the groove 232 engage, the structure of the first connecting structure 24 is simple and occupies little space.

[0194] The sliding part 261 can be columnar, block-shaped, etc., and is not specifically limited here. When the sliding part 261 is columnar, the sliding part 261 can be mounted on the first swing arm 26 through the mounting hole.

[0195] The positions of the aforementioned groove 232 and sliding part 261 can also be interchanged, that is: the second swing arm 23 is provided with the sliding part 261, and the first swing arm 26 is provided with the groove 232. This design can also realize the sliding connection between the second swing arm 23 and the first swing arm 26.

[0196] Of course, the first connecting structure 24 is not limited to the slide groove 232 and the sliding part 261. It can also be a transmission link, with one end of the transmission link hinged to the first swing arm 26 and the other end of the transmission link hinged to the second swing arm 23. This can also enable the first swing arm 26 to drive the second swing arm 23 to rotate relative to the base 21 in the unfolded position and the folded position.

[0197] In some embodiments, such as Figure 18 and Figure 19 As shown, the first swing arm 26 is provided with a clearance opening 262, and the second swing arm 23 extends into the clearance opening 262. This design allows the second swing arm 23 and the first swing arm 26 to be designed more compactly, reducing the overall space occupied by the second swing arm 23 and the first swing arm 26.

[0198] In some embodiments, such as Figure 6f , Figure 6g , Figure 6i , Figures 21-23 As shown, the connecting assembly 6 includes an actuating element 60, which (also called a crank actuating element) includes a rotating shaft 62 and an eccentric portion 61 eccentrically disposed relative to the rotating shaft 62. The swing arm 22 is rotatably connected to the base 21 via the rotating shaft 62. The eccentric portion 61 is eccentrically disposed relative to the rotating shaft 62, and the rotating shaft 62 is fixed relative to the swing arm 22 in its circumferential direction. The shaft cover 3 is provided with a cavity 34, and the eccentric portion 61 extends into the cavity 34. The eccentric portion 61 can move in the cavity 34 along the X-axis direction. At the same time, due to the limiting connection between the shaft cover 3 and the base 21 in the X and Y directions, and the limiting effect of the cavity 34 on the eccentric portion 61 in the Z direction, the eccentric portion 61 can drive the shaft cover 3 to move in the Z direction when it rotates synchronously with the rotating shaft 62, but not in the X and Y directions.

[0199] Specifically, Figures 21-23 In the middle, the second swing arm 23 is connected to the rotating shaft 62.

[0200] In some embodiments, such as Figure 23 As shown, along the Z-axis, the cavity 34 has a first inner wall 341 and a second inner wall 343, both of which abut against the eccentric portion 61.

[0201] like Figure 6i and Figure 23 As shown, with 6i and Figure 23Taking the second swing arm 23 on the left as an example, the movement process is explained as follows: Since the rotating shaft 62 is fixed relative to the second swing arm 23 in its circumferential direction, when the second swing arm 23 on the left rotates clockwise under the drive of the first swing arm 26 (that is, when it rotates towards the folding position), the second swing arm 23 drives the rotating shaft 62 to rotate clockwise. The eccentric part 61 moves to the upper right under the drive of the rotating shaft 62 and presses against the first inner wall 341 located on the upper side, so that the eccentric part 61 drives the shaft cover 3 to move upward, so as to move in the direction close to the base 21, so as to lift the shaft cover 3.

[0202] When the second swing arm 23 on the left rotates counterclockwise (that is, when it rotates to the unfolded position), the second swing arm 23 drives the rotating shaft 62 to rotate counterclockwise. The eccentric part 61 moves to the lower left under the drive of the rotating shaft 62 and presses against the second inner wall 343 located on the lower side, so that the eccentric part 61 drives the shaft cover 3 to move downward, so as to move away from the base 21, so as to achieve the "lowering" of the shaft cover 3.

[0203] It should be noted that the first inner wall 341 and the second inner wall 343 of the cavity 34 are arranged opposite each other. They can be parallel or non-parallel; for example, if the included angle between the first inner wall 341 and the second inner wall 343 is within 20 degrees, they can be considered to be arranged opposite each other. Furthermore, the first inner wall 341 and the second inner wall 343 are not limited to flat surfaces. Specifically, the contact between the first inner wall 341, the second inner wall 343 and the eccentric part 61 involves point contact, line contact, or surface contact. During the rotation of the eccentric part 61 with the rotating shaft 61, a force can be generated between the eccentric part 61 and the first inner wall 341 or the second inner wall 343. When the display screen is not rotating, there may be no force between the eccentric part 61 and the first inner wall 341 or the second inner wall 343. It is understandable that due to manufacturing tolerances, the actual size of the eccentric part 61 deviates from the ideal size to a certain extent. This may result in at least one of the first inner wall 341 and the second inner wall 343 separating from the eccentric part 61 (i.e. not contacting it).

[0204] By abutting the first inner wall 341 and the second inner wall 343 against the eccentric part 61, when the rotating shaft 61 drives the eccentric part 61 to rotate, the eccentric part 61 can both move the shaft cover 3 towards the base 21 to "lift" the shaft cover and move the shaft cover 3 away from the base 21 to "lower" the shaft cover 3. In other words, the eccentric part 61 can apply force to the shaft cover 3 in both directions. Therefore, there is no need to set up springs or other reset components for the shaft cover 3, which makes the structure of the connecting assembly 6 simpler and reduces the number of parts. By setting the eccentric part 61 to slide along the cavity 34 in the X-axis direction, the mechanism formed between the second swing arm 23, the actuating member 60, and the shaft cover 3 has one degree of freedom, which allows the actuating member 60 to drive the shaft cover 3 to "rise and fall" while rotating. Furthermore, during the rotation of the swing arm 22, the eccentric part 61 can maintain contact with the first inner wall 341 and the second inner wall 342 of the cavity 34, so as to avoid collision between the eccentric part 61 and the first inner wall 341 or the second inner wall 342 at the beginning or end of the rotation of the swing arm 22, which would cause the shaft cover to shake or make noise. It can also avoid the shaft cover 3 from lagging behind the movement of the swing arm 33 as it rises or falls, so that the shaft cover 3 can move smoothly and steadily during the process of folding and unfolding the display screen.

[0205] In some embodiments, such as Figure 21 and Figure 22 As shown, the eccentric part 61 is a columnar structure that protrudes relative to the rotating shaft 62. The central axis of the eccentric part 61 is parallel to but not on the same axis as the central axis of the rotating shaft 62. With this design, the space occupied by the motion trajectory of the eccentric part 61 is smaller when the rotating shaft 62 rotates, so that the eccentric part 61 is less likely to interfere with the motion of surrounding components.

[0206] Among them, such as Figure 21 and Figure 22 As shown, the eccentric part 61 is a columnar protrusion structure, but it is not limited to this. The eccentric part 61 can also be designed as a conical protrusion structure, a frustum-shaped protrusion structure, a spherical protrusion structure, etc., depending on the actual situation.

[0207] In some embodiments, such as Figure 22 As shown, the eccentric part 61 and the rotating shaft 62 are an integral structure. This design not only improves the connection strength between the eccentric part 61 and the rotating shaft 62, making them less prone to breakage, but also reduces the number of parts in the rotating shaft mechanism 120, thus facilitating its assembly.

[0208] Of course, in other embodiments, the eccentric part 61 and the rotating shaft 62 can also be designed separately, and the eccentric part 61 and the rotating shaft 62 can be connected together by means of screwing, snap-fitting or other methods.

[0209] like Figure 25 As shown, Figure 25This is a schematic diagram illustrating the change in the positional relationship of the shaft cover 3 under the influence of the eccentric portion 61 during rotation of the rotating shaft 62 in some embodiments of this application. Figure 25 As shown in (a) to (d), during the clockwise rotation of the shaft 62, the position of the eccentric part 61 relative to the axis O1 of the shaft 62 gradually rises. As the eccentric part 61 rises, it presses against the inner wall of the cavity 34, thereby raising the position of the shaft cover 3. The changes in h1, h2, h3, and h4 in the figure reflect the change in distance from the axis O of the shaft 62 to the lower surface of the shaft cover 3. h4 is significantly smaller than h1, indicating that the shaft 62 significantly raises the shaft cover 3 during rotation. When the two sub-fusels 11 are in a folded state, this can significantly increase the overlap between the shaft cover 3 and the sub-fusels 11.

[0210] like Figure 26 As shown, Figure 26 This paper presents the relationship between the rotation angle of the second swing arm 23 and the lifting amount of the bearing cover 3 in some embodiments of this application. If the rotation angle of the second swing arm 23 is θ, the eccentricity between the axis O1 of the rotating shaft 62 and the axis O2 of the eccentric part 61 (which is cylindrical) is L, and the initial angle between the line connecting the axis O1 of the rotating shaft 62 and the axis O2 of the eccentric part 61 (also referred to as the "crank") and the horizontal plane is α, the gain h of the overlap between the bearing cover 3 and the sub-body 11 brought by this mechanism can be obtained as: h = 2Lsin(θ / 2)cos(α-θ / 2). The lifting value of the bearing cover 3 can be appropriately designed by properly designing the angle and length parameters.

[0211] In some embodiments, such as Figure 21 and Figure 23 As shown, along the X-axis, one end of the shaft cover connector 32 is provided with an opening 342 communicating with the cavity 34, allowing the eccentric part 61 to extend into the cavity 34. This design allows the eccentric part 61 to extend into the cavity 34 from the side, facilitating its insertion and improving the installation efficiency of the actuating member 60.

[0212] In some embodiments, such as Figure 21 and Figure 23 As shown, a limiting flange 36 is provided on the shaft cover wall 31, and the limiting flange 36 is arranged opposite to the opening 342. With this design, the limiting flange 36 acts as a stop, partially or completely confining the eccentric part 61 within the cavity 34, thereby preventing the eccentric part 61 from completely moving out of the cavity 34 from the opening 342 during the rotation of the shaft 62. Furthermore, since there is a certain gap between the limiting flange 36 and the opening of the cavity 34, space is provided for the movement of the eccentric part 61. Thus, the size of the cavity in the X direction does not need to be excessively large to meet the space requirements for the movement of the eccentric part in the X direction, improving the structural compactness in the X direction.

[0213] The aforementioned shaft cover connector 32 may have one or more recesses 34, depending on the arrangement of the second swing arm 23. For example, Figure 21 As shown, the shaft cover connector 32 is provided with two recesses 34, which are located at both ends of the shaft cover connector 32 along the width direction of the shaft cover 3.

[0214] In some embodiments, such as Figure 21 , Figure 22 and Figure 24 As shown, Figure 24 This is a cross-sectional view showing the connection between the rotating shaft 62 and the second swing arm 23 in some embodiments of this application. The rotating shaft 62 includes a flat section 621 and a cylindrical section 622. The eccentric portion 61, the flat section 621 and the cylindrical section 622 are connected in sequence. The second swing arm 23 is provided with a flat hole 235 that mates with the flat section 621, so that the rotating shaft 62 is fixed relative to the second swing arm 23 in the circumferential direction.

[0215] The second swing arm 23 is also provided with a swing arm hole 231 that mates with the cylindrical section 622; the base 21 is provided with a base hole 216 for the flat section 621 and the cylindrical section 622 to pass through. The shaft section of the flat section 621 exposed in the flat section hole 235 and the shaft section of the cylindrical section 622 exposed in the swing arm hole 231 respectively pass into the corresponding base hole 216. The base hole can be a circular hole. The two base holes are close to the two sides of the second swing arm 23. The base 21 protrudes and has base holes at the positions close to the two sides of the second swing arm 23.

[0216] This design makes the actuating element 60 simple, compact, and space-saving. It achieves both the rotatable connection between the second swing arm 23 and the base 21, and also enables the second swing arm 23 to drive the rotating shaft 23 to rotate, thereby driving the eccentric part 61 to rotate. Specifically, combined with... Figure 21 Due to the cooperation between the flat section 621 and the flat hole 235, the second swing arm 23 drives the eccentric part 61 to rotate. Due to the cooperation between the cylindrical section 622 and the base hole 216, especially when the base hole 216 is circular, the swing arm 22 can rotate smoothly based on the base 21. Furthermore, the base hole 216 that cooperates with the flat section 621 does not interfere with the flat section, does not restrict the rotation of the actuating member 60, and does not drive the base 21 to move.

[0217] Among them, the flat segment 621 has a flat surface on its side, as in some embodiments, such as Figure 24 As shown, the flat surfaces are disposed on opposite sides of the flat shaft segment 621. In other embodiments, the flat surfaces may also be disposed on one, three, or four sides of the circumferential flat shaft segment 621, without specific limitation here.

[0218] Of course, besides using the flat section 621 and the flat hole 235 to fix the rotating shaft 62 relative to the second swing arm 23 in the circumferential direction, the rotating shaft 62 can also be fixed relative to the second swing arm 23 in the circumferential direction by a key connection. The aforementioned eccentric part 61 can be connected not only to the rotating shaft 62, but also to a position on the second swing arm 23 that is offset from the axis of the rotating shaft 62 (e.g., Figure 6d As shown), during the process of switching the two sub-fusels 11 to the folded state, the eccentric part 61 can also drive the shaft cover 3 to move in the direction close to the base 21.

[0219] In some embodiments, such as Figure 18 , Figure 20a and Figure 21 As shown, the base 21 includes a base body 211 and a bearing 212 detachably disposed on the base body 211, and the rotating shaft 62 is rotatably disposed on the bearing 212. Specifically, a base hole 216 is disposed on the bearing 212.

[0220] With this design, when the connection of the rotating shaft 62 is damaged, the damaged structure can be repaired simply by disassembling and replacing the bearing seat 212, without having to replace the entire base 21, thus helping to reduce maintenance costs.

[0221] Among them, such as Figure 18 and Figure 20a As shown, the bearing seat 212 and the base body 211 are detachably connected together by fasteners (such as screws), but it is not limited to this. The bearing seat 212 and the base body 211 can also be detachably connected by snap-fit, plug-in or other means.

[0222] In some embodiments, such as Figure 20a and Figure 21 As shown, the cavity 34 is disposed on the shaft cover connector 32. This design allows for repair of the cavity 34 only by disassembling and replacing the shaft cover connector 32 when the structure of the cavity 34 is damaged, eliminating the need to replace the entire shaft cover 3, thus reducing maintenance costs. Furthermore, when the connection between the base 21 and the shaft cover 3 is also on the shaft cover connector 32, multiple uses can be achieved, saving components and design space.

[0223] The aforementioned cavity 34 can be a groove or a hole; the hole can be a round hole or a runway hole, and no specific limitation is made here. For example... Figure 27 As shown, Figure 27 This illustration shows a schematic diagram of a cavity 34 being a circular hole in some embodiments of this application. This embodiment is... Figure 23 and Figure 25The cavity 34 is designed to be circular, while the rest of the structure remains unchanged. There is a movable gap between the eccentric part 61 and the inner wall of the cavity 34. When the second swing arm 23 rotates relative to the base towards the folded position, the rotating shaft 62 rotates clockwise under the drive of the second swing arm 23. The eccentric part 61 can abut against the inner wall of the cavity 34, and the eccentric part 61 presses against the upper half of the inner wall of the cavity 34, thereby driving the shaft cover 3 to move closer to the base 21, thus achieving the "lifting" of the shaft cover 3. When the second swing arm 23 rotates relative to the base towards the unfolded position, the rotating shaft 62 rotates counterclockwise under the drive of the second swing arm 23. The eccentric part 61 abuts against and presses against the lower half of the inner wall of the cavity 34, thereby driving the shaft cover 3 to move away from the base 21, thus achieving the "lowering" of the shaft cover 3.

[0224] Besides being the protruding structure described above, the eccentric portion 61 can also be an eccentric wheel, such as... Figure 28 As shown, Figure 26 The diagram illustrates the installation relationship between the actuating member 60 and the shaft cover 3 in some embodiments of this application. In this embodiment, the eccentric portion 61 is an eccentric wheel, and the rotating shaft 62 is offset from the center of the eccentric wheel so that the eccentric wheel is eccentrically positioned relative to the rotating shaft 62. The rotating shaft 62 is fixed relative to the second swing arm 23 in the circumferential direction. The cavity 34 is a groove that extends along the Z-axis. A reset member 47 is provided between the base 21 and the shaft cover connector 32. The reset member 47 is used to apply a reset force to the shaft cover 3, causing the shaft cover 3 to move away from the base 21, so that the eccentric wheel abuts against the upper inner wall of the cavity 34. For example, the reset member 47 is a spring in a compressed state, with one end of the spring abutting against the shaft cover connector 32 and the other end of the spring abutting against the base 21.

[0225] Taking the actuating element 60 located on the left as an example, the movement process is explained as follows: When the rotating shaft 62 rotates clockwise (that is, when the second swing arm 23 rotates to the folded position), as the distance from the contact point between the eccentric wheel and the upper inner wall of the cavity 34 to the axis of the rotating shaft 62 increases, the eccentric wheel presses against the upper inner wall of the cavity 34, and the eccentric wheel drives the shaft cover 3 to move in the direction closer to the base 21 (the upward direction in the figure) to "lift" the shaft cover 3; when the rotating shaft 62 rotates counterclockwise (that is, when the second swing arm 23 rotates to the unfolded position), as the distance from the contact point between the eccentric wheel and the upper inner wall of the cavity 34 to the axis of the rotating shaft 62 decreases, at this time the eccentric wheel does not exert pressure on the upper inner wall of the cavity 34, and the shaft cover 3 moves away from the base 21 (the downward direction in the figure) under the action of the reset force of the reset element 47 to "lower" the shaft cover 3.

[0226] In the above Figures 21-28In the illustrated embodiment, the eccentric portion 61 extends into the cavity 34 on the shaft cover 3. When the rocker arm 22 rotates relative to the base 21 towards the folded position, the eccentric portion 61 can move within the cavity 34 and abut against the inner wall of the cavity 34, thereby driving the shaft cover 3 to move closer to the base 21, thus "lifting" the shaft cover 3. By placing the eccentric portion 61 in the cavity 34, the cavity 34 acts as a limit for the eccentric portion 61, making it less likely for the eccentric portion 61 to detach from the shaft cover 3, thereby improving the reliability of the connection between the actuating member 60 and the shaft cover 3.

[0227] In addition to the structure shown above, the eccentric portion 61 of the actuating member 60 can also be configured as a cam, such as... Figure 29 As shown, Figure 29 The diagram illustrates the installation relationship between the actuating member 60 and the shaft cover 3 in some other embodiments of this application. In this embodiment, the eccentric portion 61 is a cam, and the rotating shaft 62 is fixed relative to the cam in the circumferential direction. The cam profile is elliptical, and the cam is eccentrically positioned with respect to the rotating shaft 61, meaning that the geometric center axis of the cam is not aligned with the center axis of the rotating shaft 61. The shaft cover 3 also includes an abutting flange 37, which is disposed on the shaft cover wall 31 located on one side edge of the shaft cover 3 along the width direction X of the shaft cover 3. A reset member 47 is provided between the base 21 and the shaft cover connector 32. The reset member 47 is used to apply a reset force to the shaft cover 3, causing the shaft cover 3 to move away from the base 21, so that the cam abuts against the abutting flange 37. For example, the reset member 47 is a spring, which is in a compressed state, with one end of the spring abutting against the shaft cover wall 31 and the other end of the spring abutting against the base 21.

[0228] Taking the actuating element 60 located on the left as an example, the movement process is explained as follows: When the rotating shaft 62 rotates clockwise (that is, when the second swing arm 23 rotates to the folded position), as the distance from the contact point of the cam and the abutment flange 37 to the axis of the rotating shaft 62 increases, the cam and the abutment flange 37 are pressed together. The cam drives the shaft cover 3 to move in the direction closer to the base 21, so as to "lift" the shaft cover 3. When the rotating shaft 62 rotates counterclockwise (that is, when the second swing arm 23 rotates to the unfolded position), as the distance from the contact point of the cam and the abutment flange 37 to the axis of the rotating shaft 62 decreases, the cam does not exert a pressing force on the abutment flange 37. Under the action of the reset force of the reset element 47, the shaft cover 3 moves away from the base 21, so as to "lower" the shaft cover 3.

[0229] exist Figures 21-29In the illustrated embodiment, the actuating member 60 includes a rotating shaft 62 and an eccentric portion 61 offset from the rotating shaft 62. The swing arm 22 is rotatably connected to the base 21 via the rotating shaft 62. The rotating shaft 62 is fixed relative to the swing arm 22 in the circumferential direction. The eccentric portion 61 abuts against the shaft cover 3. When the swing arm 22 rotates from the unfolded position to the folded position, the eccentric portion 61 drives the shaft cover 3 to move closer to the base 21. By setting the eccentric portion 61 offset from the rotating shaft 62, the space occupied by the movement trajectory of the eccentric portion 61 is small when the swing arm 22 rotates, making it less likely to interfere with surrounding components.

[0230] With the design of the actuating element 60 in any of the above embodiments, when the second swing arm 23 rotates from the unfolded position to the folded position, the actuating element 60 can rotate with the swing arm 22 to drive the shaft cover 3 to move in the direction close to the base 21, thereby realizing the "lifting" of the shaft cover 3. This makes the connection structure between the connecting component 6 and the shaft cover 3 relatively simple, and the number of parts in the connecting component 6 is relatively small, which not only helps to reduce costs, but also helps to improve the connection reliability between the connecting component 6 and the shaft cover 3.

[0231] Figures 30-36 The diagram shows the structure and installation method of the swing arm 22 located at the middle of the shaft cover 3 along its length Y. Figure 30 for Figure 13 A partial view of the middle part of the central pivot mechanism 120. Figure 31 for Figure 14 A partial view of the middle part of the central pivot mechanism 120. Figure 32 for Figure 15 A partial view of the middle part of the central pivot mechanism 120. Figure 33 for Figure 30 Exploded view of the second swing arm 23, the first swing arm 26, the base 21, and the shaft cover 3. Figure 34 for Figure 17 Exploded view of the first swing arm 26 and base 21 in the middle. Figure 35 This is a schematic diagram showing the connection between the eccentric portion 61 and the shaft cover 3 in some embodiments of this application. Figure 36 for Figure 30 Exploded view of the first swing arm 26 and base 21.

[0232] Figures 30-36 The structure of the swing arm 22 shown is similar to Figures 17-23 The main differences in the structure of the swing arm 22 shown are: the positional relationship between the first swing arm 26 and the second swing arm 23 is different, and the structure of the rotating shaft 62 is different.

[0233] like Figure 31 and Figure 32As shown, along the Y-axis, the first swing arm 26 and the second swing arm 23 are arranged side by side, meaning the first swing arm 26 is located to one side of the second swing arm 23. This design facilitates the installation and removal of the first swing arm 26 and the second swing arm 23, and eliminates the need for clearance openings on the first swing arm 26, thus simplifying its structure.

[0234] like Figure 33 , Figure 34 and Figure 35 As shown, all parts of the shaft 62 along its length direction Y are flat shafts. Figure 22 The shaft 62 shown is partially flat, which simplifies the structure of the shaft 62 and makes it easier to process.

[0235] For the specific structure of the interconnection between the second swing arm 23, the first swing arm 26, the base 21, and the shaft cover 3 in this embodiment, please refer to... Figures 17-23 The settings described in the illustrated embodiments will not be repeated here.

[0236] In some embodiments, such as Figure 6i , Figure 11 and Figure 12 As shown, the rotating shaft mechanism 120 also includes a support member 27. The front of the support member 27 is used to mount the display screen 200. The back of the support member 27 is rotatably connected to the swing arm 22, and the support member 27 is also rotatably connected to the base 21 through the second connecting structure 29, so that the support member 27 can swing relative to the base 21 under the drive of the swing arm 22.

[0237] like Figure 11 and Figure 12 As shown, there are two support members 27, and each support member 27 has a swing arm 22 on the side away from the installation space 10.

[0238] Support member 27 is used to support part of the display screen 200. Specifically, support member 27 is used to support... Figure 1 The third display area 230 in the display screen 200 shown. When the two sub-bodies 11 of the terminal device are in the unfolded state, the surfaces on the sub-bodies 11 used to set the display screen 200, the surface on the support 27 used to set the display screen 200, and the surface on the base 21 used to set the display screen 200 are approximately coplanar (e.g., Figure 11 (As shown).

[0239] During the transition of the two sub-body 11 to a folded state, the first swing arm 26 can drive the support member 27 to swing relative to the base 21, thereby allowing the support member 27 to support the bent portion of the display screen 200. Figure 1 The third display area 230 in the middle is well supported and protected. When the two sub-fusels 11 are in the folded state, as Figure 6i and Figure 12 As shown, the rotation angle of the support member 27 relative to the base 21 is greater than the rotation angle of the sub-fuselage 11 relative to the base 21. Since the first swing arm 26 is fixed to the sub-fuselage 11, the rotation angle of the sub-fuselage 11 relative to the base 21 is equal to the rotation angle of the first swing arm 26 relative to the base 21. That is, the rotation angle of the support member 27 relative to the base 21 is greater than the rotation angle of the first swing arm 26 relative to the base 21. Given that the rotation angle of the first swing arm 26 is 90°, the rotation angle of the support member 27 is greater than 90°, for example, it could be 100°, 110°, etc., without specific limitation here. In this case, the two support members 27 together form an "eight" shape (e.g., ...). Figure 12 As shown), to better accommodate the bend in the display screen 200 (as shown). Figure 1 The third display area 230 is used to avoid excessive pressure on the bent part of the display screen 200, which would affect the normal operation of the display screen 200.

[0240] Among them, such as Figure 11 and Figure 12 As shown, the support member 27 has a plate-like structure, and in this case, the support member 27 can also be referred to as a "door panel". This design increases the contact area between the support member 27 and the display screen 200, allowing the two support members 27 to better support the display screen 200. Of course, in addition to being a plate-like structure, the support member 27 can also be set as a frame structure.

[0241] The structure of the second connection structure 29 is not unique; in some embodiments, such as... Figure 14 , Figure 15 as well as Figure 16a As shown, the second connecting structure 29 includes a third swing arm 281 and a mating groove 271. The third swing arm 281 is rotatably connected to the base 21 via a rotating shaft 282. The support member 27 is provided with a mating groove 271, one end of which is located close to the rotating shaft 282, and the other end of which is located away from the rotating shaft 282 (e.g., ...). Figure 16a As shown), the third swing arm 281 slides into the mating groove 271. With this design, the two sub-fusels 11 can slide into the deployed state during the transition (from...). Figures 15 to 14 During the process, driven by the first swing arm 26, the two support members 27 open while the third swing arm 281 slides relative to the support member 27, so that the support member 27 moves closer to the base 21, thereby reducing the gap between the support member 27 and the base 21, so that the support member 27 and the base 21 can provide better support for the display screen 200.

[0242] During the process of the two sub-fusels 11 switching to the folded state (by Figures 14 to 15In the process of moving the first swing arm 26, the two support members 27 move closer together while the third swing arm 281 slides relative to the support members 27, causing the support members 27 to move away from the base 21. This allows the two support members 27 to form an "eight" shape, better accommodating the bent portion of the display screen 200 and preventing excessive compression of the bent portion of the display screen 200 from affecting its normal operation. The second connection structure 29 is simple in structure, requires fewer parts, and has high connection reliability.

[0243] Of course, the second connecting structure 29 can be any other structure besides the structure described above, such as a structure that can slide through the shaft hole. The third swing arm 281 is set in the shape of a rod, and the support member 27 is provided with a sliding hole. One end of the sliding hole is set close to the rotating shaft 282, and the other end is set away from the rotating shaft 282. The third swing arm 281 slides with the sliding hole.

[0244] The support member 27 can be rotatably connected to the first swing arm 26 through the following structure, in some embodiments, such as Figure 16b , Figure 16c , Figure 19 as well as Figure 20a As shown, Figure 16b for Figure 14 A BB section view of the rotating shaft mechanism 120 without removing the shaft cover. Figure 16c for Figure 14 The BB cross-sectional view of the pivot mechanism 120 in the folded state and without removing the pivot cover is shown. The second swing arm 26 has a second arc-shaped groove 265, and the support member 27 has a second arc-shaped piece 272. The second arc-shaped piece 272 slides in conjunction with the second arc-shaped groove 265, allowing the support member 27 and the second swing arm 26 to be rotatably connected. This results in a larger contact area between the second arc-shaped piece 272 and the second arc-shaped groove 265, making it less prone to wobbling when sliding relative to the second arc-shaped groove 265, thus making the rotation of the support member 27 relative to the second swing arm 26 more stable.

[0245] Of course, the positions of the second arc groove 265 and the second arc plate 272 can also be interchanged, that is, the second arc groove 265 is set on the support member 27 and the second arc plate 272 is set on the second swing arm 26, which can also make the support member 27 rotate more smoothly relative to the second swing arm 26.

[0246] In some embodiments, such as Figure 11 As shown, the base 21 has a support surface 213 for supporting the display screen 200. When the two sub-body 11 are in the unfolded state, the shaft cover 3 does not protrude from the support surface 213. This design can prevent the shaft cover 3 from hitting the display screen 200 and causing damage to the display screen 200, thereby ensuring the normal operation of the display screen 200.

[0247] In some embodiments, such as Figure 11 and Figure 12 As shown, when the two sub-bodies 11 are in the folded state, the shaft cover 3 protrudes from the support surface 213, and there is a safety gap (not shown) between the shaft cover 3 and the display screen 200. By making the shaft cover 3 protrude from the support surface 213, sufficient "lifting amount" of the shaft cover 3 relative to the base 21 can be ensured, thereby increasing the overlap between the shaft cover 3 and the sub-bodies 11. At the same time, the safety gap between the shaft cover 3 and the display screen 200 can prevent the shaft cover 3 from hitting the display screen 200 and causing damage to the display screen 200, thereby ensuring the normal operation of the display screen 200.

[0248] In this embodiment, the number of sub-body 11 in the terminal device is not limited to two; it can also be three or more. Two adjacent sub-body 11 are connected by the aforementioned hinge mechanism 120, meaning the hinge mechanism 120 is located at the junction of the sub-body 11. This terminal device can fold the display screen more than 200 times, which is more conducive to reducing the size of the terminal device and making it easier to carry.

[0249] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0250] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rotating shaft mechanism, characterized in that, The invention relates to a foldable terminal device having a display screen and two adjacent sub-body units for supporting the display screen. The pivot mechanism is located at the junction of the two sub-body units and includes a base, a swing arm, a connecting assembly, and a shaft cover. The shaft cover has a receiving space, and at least a portion of the base is disposed in the receiving space. The swing arm is rotatably connected to the base, so that the swing arm can rotate relative to the base between an unfolded position and a folded position. The connecting assembly is connected between the swing arm and the shaft cover. When the swing arm is configured to rotate from the unfolded position to the folded position, the swing arm drives the shaft cover to move in a direction close to the base through the connecting assembly.

2. The rotating shaft mechanism according to claim 1, characterized in that, The connecting assembly includes a toggle member that rotates with the swing arm as the swing arm rotates from the unfolded position to the folded position, thereby causing the shaft cover to move in a direction close to the base.

3. The rotating shaft mechanism according to claim 2, characterized in that, The actuating element includes a pivot and an eccentric portion eccentrically disposed relative to the pivot. The swing arm is configured to be rotatably connected to the base via the pivot. The pivot is fixed relative to the swing arm in the circumferential direction. When the swing arm rotates from the unfolded position to the folded position, the eccentric portion abuts against the shaft cover to drive the shaft cover to move in a direction closer to the base.

4. The rotating shaft mechanism according to claim 3, characterized in that, The shaft cover has a recessed cavity, and the eccentric part extends into the recessed cavity. When the swing arm rotates relative to the base toward the folded position, the eccentric part can move in the recessed cavity and abut against the inner wall of the recessed cavity, thereby driving the shaft cover to move in a direction closer to the base.

5. The rotating shaft mechanism according to claim 4, characterized in that, The eccentric portion can move within the cavity along the width direction of the shaft cover; along the first direction, the cavity has opposing first and second inner walls, the first and second inner walls abutting against the eccentric portion, and the first direction is perpendicular to both the length direction and the width direction of the shaft cover.

6. The rotating shaft mechanism according to claim 4, characterized in that, The shaft cover includes a shaft cover wall and a shaft cover connector. The shaft cover wall encloses the receiving space. At least a portion of the shaft cover connector is disposed in the receiving space and is detachably connected to the shaft cover wall. The cavity is disposed on the shaft cover connector.

7. The rotating shaft mechanism according to claim 6, characterized in that, The shaft cover connector is slidably connected to the base along a first direction, which is perpendicular to both the length direction and the width direction of the shaft cover.

8. The rotating shaft mechanism according to claim 6, characterized in that, Along the width direction of the shaft cover, one end of the shaft cover connector is provided with an opening communicating with the cavity, and the opening allows the eccentric part to extend into the cavity.

9. The rotating shaft mechanism according to claim 8, characterized in that, The shaft cover wall is provided with a limiting flange, which is disposed opposite to the opening to restrict at least a portion of the eccentric part in the cavity.

10. The rotating shaft mechanism according to claim 3, characterized in that, The eccentric portion is a columnar structure that protrudes relative to the rotating shaft, and the central axis of the eccentric portion is parallel to but not on the same axis as the central axis of the rotating shaft.

11. The rotating shaft mechanism according to claim 10, characterized in that, The rotating shaft includes a flat section and a cylindrical section, and the eccentric part, the flat section and the cylindrical section are connected in sequence. The swing arm is provided with a flat hole that mates with the flat section, so that the rotating shaft is fixed relative to the swing arm in the circumferential direction; The swing arm is also provided with a swing arm hole that mates with the cylindrical section; The base has base holes for the flat section and the cylindrical section to pass through. The shaft section of the flat section exposed in the flat hole and the shaft section of the cylindrical section exposed in the swing arm hole are respectively inserted into the corresponding base holes.

12. The rotating shaft mechanism according to claim 10, characterized in that, The eccentric part and the rotating shaft are an integral structure.

13. The rotating shaft mechanism according to any one of claims 1-5 and 7-12, characterized in that, The shaft cover is slidably connected to the base along a first direction, so that the shaft cover can approach the base along the first direction. The first direction is perpendicular to both the length direction and the width direction of the shaft cover.

14. The rotating shaft mechanism according to any one of claims 1 to 12, characterized in that, When the swing arm is configured to rotate from the folded position to the unfolded position, the swing arm can drive the shaft cover to move away from the base via the connecting assembly.

15. The rotating shaft mechanism according to any one of claims 1 to 12, characterized in that, The swing arm includes a first swing arm and a second swing arm, both of which are rotatably connected to the base. The second swing arm has an unfolded position and a folded position. The second swing arm is connected to the shaft cover through the connecting assembly. The first swing arm is connected to the second swing arm through a first connecting structure, so that the first swing arm drives the second swing arm to rotate between the unfolded position and the folded position.

16. The rotating shaft mechanism according to claim 15, characterized in that, The first connecting structure includes a groove and a sliding part. The groove is disposed on one of the first swing arm and the second swing arm, and the sliding part is disposed on the other of the first swing arm and the second swing arm. One end of the slide groove is located close to the base, and the other end of the slide groove is located away from the base. The sliding part slides in cooperation with the slide groove.

17. The rotating shaft mechanism according to claim 15, characterized in that, The first swing arm and the second swing arm are arranged side by side along the length of the shaft cover; or, the first swing arm is provided with a clearance notch, and the second swing arm extends into the clearance notch.

18. The rotating shaft mechanism according to claim 15, characterized in that, The base is provided with a first arc-shaped groove, and the first swing arm is provided with a first arc-shaped piece. The first arc-shaped piece slides in conjunction with the first arc-shaped groove so that the first swing arm is rotatably connected to the base.

19. The rotating shaft mechanism according to claim 18, characterized in that, The base includes a base body and a base connector that is detachably connected to the base body, wherein the base body and the base connector form the first arc-shaped groove.

20. The rotating shaft mechanism according to any one of claims 1 to 12, characterized in that, The rotating shaft mechanism includes a support member. The front of the support member is used to mount the display screen, and the back of the support member is rotatably connected to the swing arm. The support member is rotatably connected to the base through a second connecting structure, so that the support member can swing relative to the base under the drive of the swing arm.

21. The rotating shaft mechanism according to claim 20, characterized in that, The second connection structure includes a third swing arm and a mating groove. The third swing arm is rotatably connected to the base. The mating groove is disposed on the support member, with one end of the mating groove close to the base and the other end of the mating groove away from the base. The third swing arm is slidably engaged with the mating groove.

22. The rotating shaft mechanism according to claim 20, characterized in that, One of the support member and the swing arm is provided with a second arc-shaped groove, and the other of the support member and the swing arm is provided with a second arc-shaped piece. The second arc-shaped piece slides in conjunction with the second arc-shaped groove so that the support member and the swing arm are rotatably connected.

23. A terminal device, characterized in that, The device includes a display screen, at least two adjacent sub-body units, and a pivot mechanism as described in any one of claims 1 to 22, wherein the sub-body units are used to support the display screen, and the pivot mechanism is located at the junction of the sub-body units.

24. The terminal device according to claim 23, characterized in that, The swing arm of the rotating shaft mechanism is connected to the sub-body. When the sub-body is in a folded state, the swing arm is located in the folded position; when the sub-body is in an unfolded state, the swing arm is located in the unfolded position.

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