Foldable device

Abstract

The application provides a foldable device, and relates to the technical field of electronic products, which comprises a first folding body, a second folding body and a rotating shaft mechanism. The first folding body comprises a first part and a second part arranged in a first direction and connected with each other. A side surface of the first part in a second direction is a first surface. The second part has a boss protruding from the first surface. The second folding body has opposite first and second ends. The first end is rotatably connected with the first folding body through the rotating shaft mechanism. In a folded state, the second folding body is stacked on the first surface, and the first end is located between the second end and the boss. The rotating shaft mechanism is configured to drive the second folding body to move away from the first folding body along the second direction relative to the first folding body when an external force drives the foldable device to switch from a folded state to an open state. The foldable device is beneficial to increase the maximum opening angle between the first folding body and the second folding body, so as to meet the use requirements of users.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and more particularly to a foldable device. Background Technology

[0002] The hinge mechanism is a key component that enables the unfolding and folding of foldable devices such as laptops. Its main function is to connect the different folding sections of the foldable device, allowing it to switch between open and folded states. Taking laptops as an example, the hinge mechanism is primarily used to connect the laptop's display and keyboard.

[0003] The design of the pivot mechanism in the related technology is unreasonable, resulting in a small opening and closing angle of the foldable device, which is inconvenient for users. Summary of the Invention

[0004] This application provides a foldable device that increases the opening and closing angle of the foldable device, making it more convenient for users.

[0005] To achieve the above objectives, this application adopts the following technical solution:

[0006] This application provides a foldable device, including: a first folding body, a second folding body, and a pivot mechanism; the first folding body includes a first portion and a second portion arranged and connected in a first direction, the first portion having a first surface on one side in a second direction, and the second portion having a boss protruding from the first surface; the second folding body has a first end and a second end opposite to each other, the first end being rotatably connected to the first folding body via the pivot mechanism to allow the foldable device to switch between an open state and a folded state, the rotation center lines of the second folding body and the first folding body extending along a third direction, the third direction, the second direction, and the first direction being perpendicular to each other; in the folded state, the second folding body is stacked on the first surface, and the first end is located between the second end and the boss; the pivot mechanism is configured to drive the second folding body to move away from the first folding body along a second direction relative to the first folding body when an external force drives the foldable device to switch from a folded state to an open state.

[0007] According to the foldable device of this application, when the foldable device is in a folded state, the second folding body is stacked on the first surface. Therefore, the second folding body is located on the side of the second part closer to the first part, and the second folding body and the second part do not overlap in the second direction, which is beneficial to reducing the thickness of the foldable device in the folded state. Furthermore, since the pivot mechanism can drive the second folding body to move away from the first folding body relative to the first folding body along the second direction, the rotation center line of the relative rotation of the first and second folding bodies moves away from the first folding body along the second direction. At this time, the distance between the second folding body and the first surface in the second direction continuously increases; along the first direction, the area of ​​the vertical projection of the second folding body on the side of the boss continuously decreases. Therefore, the restrictive effect of the second part on the second folding body continuously weakens, thereby increasing the maximum opening angle between the first and second folding bodies to meet the user's usage needs. Furthermore, by driving the second folding body to move relative to the first folding body in the second direction through rotation, it is beneficial to reduce the gap size between the boss and the first end in the first direction when folded, improve the structural compactness of the foldable device, prevent dirt and grime from accumulating between the boss and the first end, and improve the size of the second folding body in the first direction.

[0008] In one possible implementation of this application, the pivot mechanism is configured to drive the second folding body to move relative to the first folding body along a second direction when the foldable device is switched from an open state to a folded state by an external force. This continuously reduces the distance between the second folding body and the first surface in the second direction, facilitating the stacking of the second folding body on the first surface when the foldable device is in the folded state. This reduces the gap between the side of the second folding body facing the first surface and the first surface in the second direction, thus improving the structural compactness.

[0009] In one possible implementation of this application, the keyboard section includes a housing, which comprises a first part and a second part. The housing has a receiving space, and the wall panel containing the first surface has an opening communicating with the receiving space. The hinge mechanism passes through the opening. This not only results in a compact structure, which helps reduce the thickness of the foldable device, but also facilitates the use of the housing to protect the hinge mechanism, thereby improving the reliability of the hinge mechanism's operation.

[0010] Specifically, the opening is located at the end of the wall panel containing the first surface, near the boss. This helps to reduce the distance between the first end and the boss in the first direction.

[0011] In one possible implementation of this application, the rotating shaft mechanism includes a drive gear and a mating component. The drive gear is fixed relative to the second folding body, and the mating component is fixed relative to the first folding body. The drive gear and the mating component cooperate to convert the rotation of the second folding body relative to the first folding body into movement of the second folding body relative to the first folding body in a second direction. Therefore, the structure is simple.

[0012] In one possible implementation of this application, the mating component is a rack. Thus, through the engagement of the drive gear and the rack, the drive gear can move relative to the rack in a second direction during rotation, converting the relative rotation between the second folding body and the first folding body into movement of the second folding body relative to the first folding body in a second direction. This design is simple and easy to manufacture.

[0013] In one possible implementation of this application, the first folding body includes a shell, which comprises a first part and a second part. The shell has a receiving space, and the wall panel on which the first surface is located has an opening communicating with the receiving space. A rack is fixed within the receiving space. The rotating shaft mechanism further includes an even number of meshing driven gears, which are arranged sequentially in a second direction and located on one side of the driving gear in the second direction. The rotation center lines of the driven gears are parallel to the rotation center lines of the driving gears. The driven gear closest to the driving gear meshes with the driving gear, and the driven gear farthest from the driving gear meshes with the rack. The even number of driven gears are integrally inserted through the opening. In this way, on the one hand, by using driven gears to connect between the driving gear and the rack, it is convenient to set the rack inside the shell to reasonably optimize the structural layout of the foldable device. On the other hand, the arrangement of an even number of driven gears ensures that the rotation direction of the driven gear meshing with the rack is consistent with that of the driving gear, so as to facilitate the smooth switching of the foldable device between the open and folded states.

[0014] In one possible implementation of this application, there are two driven gears, thereby reducing the size and cost of the foldable device.

[0015] In one possible implementation of this application, the rotating shaft mechanism includes a lifting bracket that is slidable relative to the housing in a second direction, and the driven gear is rotatably mounted on the lifting bracket. This configuration of the lifting bracket provides mounting space for the driven gear, facilitating its installation.

[0016] In one possible implementation of this application, there are two lifting brackets, which are arranged opposite each other along a third direction, with the driven gear and the driving gear located between the two lifting brackets. This results in a compact structure.

[0017] In one possible implementation of this application, the pivot mechanism further includes a base fixed within the receiving space, a rack fixed to the base, and a lifting bracket that slides with the base in a second direction via a sliding structure. The base facilitates the pivot mechanism forming a module, simplifying installation between the pivot mechanism and the first folding body, as well as between the pivot mechanism and the second folding body. Furthermore, the sliding engagement between the lifting bracket and the base via the sliding structure guides the relative movement of the first and second folding bodies in the second direction, thereby improving the reliability of the foldable device switching between open and folded states.

[0018] For example, the rack and the base can be integrally molded, which helps to simplify the overall processing of the rack and the base and reduce manufacturing costs.

[0019] In one possible implementation of this application, the rotating shaft mechanism includes a ball screw, which comprises a screw and a nut. The screw is a mating component, and the nut has a driven gear that meshes with a driving gear. The rotation center line of the driven gear extends along a second direction. Thus, through the meshing of the driving gear and the driven gear, the driven gear can move relative to the screw in the second direction during rotation, converting the relative rotation between the second folding body and the first folding body into movement of the second folding body relative to the first folding body in the second direction. This design is simple and easy to manufacture.

[0020] In one possible implementation of this application, the rotating shaft mechanism includes a fixed shaft, one end of which is fixed to the second folding body in a second direction; a drive gear is fixed to the fixed shaft. Thus, the structure is simple, and when the second folding body rotates relative to the first folding body, the drive gear rotates synchronously with the second folding body under its drive.

[0021] In one possible implementation of this application, the first end has a clearance notch, and the fixed shaft is located within the clearance notch. This improves the structural compactness of the foldable device.

[0022] In one possible implementation of this application, the first end has a protrusion that protrudes in a direction away from the second end relative to the clearance notch, and the fixing shaft is fixed to the wall surface of the protrusion facing the clearance notch. This facilitates the installation of the fixing shaft.

[0023] For example, the fixed shaft includes a fixed section. A mounting hole is provided on the wall surface of the protrusion facing the clearance notch. The fixed section is inserted into the mounting hole. This results in a simple structure.

[0024] For example, the fixing section may be interference-fitted with the mounting hole.

[0025] To prevent the fixed section from rotating within the mounting hole, the mounting hole is non-circular in shape, and the cross-sectional shape of the fixed section is also non-circular. The mounting hole is adapted to the shape and size of the fixed section.

[0026] In one possible implementation of this application, a clearance groove is formed at the end of the boss near the first portion in the first direction. The clearance groove extends through the boss in the second direction, and both the protrusion and the fixed shaft are located at the clearance groove. This is beneficial for improving the structural compactness of the foldable device.

[0027] In one possible implementation of this application, the drive gear has a first shaft hole, which is non-circular, and the fixed shaft has a mating section that is adapted to the first shaft hole. This facilitates synchronous rotation between the drive gear and the fixed shaft, thereby preventing relative rotation between them and improving the reliability of the rotating shaft mechanism.

[0028] In one possible implementation of this application, the rotating shaft mechanism includes a base and a lifting bracket; the base is fixed to the first folding body, the lifting bracket has a through hole, a fixed shaft passes through the through hole, and the fixed shaft is rotatable relative to the lifting bracket; the lifting bracket slides with the base in a second direction via a sliding structure. Therefore, the structure is simple.

[0029] In one possible implementation of this application, there are two lifting supports, which are arranged opposite each other along a third direction, and the drive gear is located between the two lifting supports. This results in a compact structure.

[0030] In one possible implementation of this application, the lifting bracket has a circular through hole, and the fixed shaft includes a mating section that passes through the through hole. The outer circumferential surface of the mating section is formed by arc segments and non-arc segments, which are distributed circumferentially. The diameter of the arc segments is equal to the diameter of the through hole, and the non-arc segments are located on the side of the cylindrical surface containing the arc segments, closer to the center line of the arc segments. In this way, when the fixed shaft rotates relative to the lifting bracket, the mating of the arc segments with the through hole can provide guidance. Furthermore, a gap can exist between the non-arc segments and the wall of the through hole, thereby reducing the frictional damping of the fixed shaft's rotation relative to the lifting bracket, facilitating rotation of the fixed shaft relative to the lifting bracket, and resulting in a simple structure.

[0031] In one possible implementation of this application, the sliding structure includes a first slider and a first slide groove. One of the first slider and the first slide groove is disposed on the base, and the other of the first slider and the first slide groove is disposed on the lifting bracket. The first slider and the first slide groove are in sliding engagement. Thus, the structure is not only simple, but also easy to assemble.

[0032] For example, the first groove is a dovetail groove. This prevents the first slider from disengaging from the first groove 3.

[0033] In one possible implementation of this application, the pivot mechanism further includes a damping structure for outputting damping force when the fixed shaft rotates. This improves the damping feel of the foldable device when switching between open and folded states, and also helps the foldable device maintain any open state.

[0034] In one possible implementation of this application, a damping structure is disposed on a fixed shaft, and a limiting part is provided on the fixed shaft. The lifting bracket and the drive gear are located between the limiting part and the damping structure. The damping structure applies a force from the damping structure to the drive gear on the lifting bracket and the drive gear. In this way, the lifting bracket and the drive gear can be clamped by the limiting part and the damping structure, which can provide damping force for the rotation of the fixed shaft, thereby improving the damping feel when the foldable device switches between the open and folded states.

[0035] In one possible implementation of this application, in the third direction, the damping structure is located on the side of the lifting bracket away from the drive gear; the damping structure includes: a friction pad, an elastic element, and an adjusting nut. The friction pad is sleeved on the fixed shaft and rotates synchronously with the fixed shaft. The friction pad is movable relative to the fixed shaft in the third direction and is used for frictional engagement with the lifting bracket; the elastic element is sleeved on the fixed shaft and located on the side of the friction pad away from the lifting bracket. The elastic element is used to apply a force toward the lifting bracket to the friction pad; the adjusting nut is threaded into the fixed shaft and is located on the side of the elastic element away from the friction pad. Therefore, the structure is simple.

[0036] In one possible implementation of this application, the base has an installation space, which is open in a second direction towards the drive gear. A lifting bracket is slidably connected to the installation space of the base via a sliding structure, and a mating component is located within the installation space. The rotating shaft mechanism also includes a protective cover, which is fixedly connected to the lifting bracket. The protective cover and the base enclose a protective space, where the fixed shaft, drive gear, and lifting bracket are all located. The protective cover has a clearance opening, through which one end of the fixed shaft in the second direction extends to the outside of the protective space. This provides protection for the fixed shaft, drive gear, driven gear, and the aforementioned damping structure.

[0037] In one possible implementation of this application, the foldable device is a laptop computer; wherein the first folding body is a keyboard host, the keyboard host includes a shell, the shell includes a first part and a second part, and the second folding body is a display.

[0038] In one possible implementation of this application, the first part has a first accommodating space, and the second part has a second accommodating space. The second accommodating space has a first spatial region and a second spatial region arranged and connected in a second direction. The first spatial region is directly opposite to and connected to the first accommodating space in the first direction, and the second spatial region is formed on a boss. An air outlet is formed on the wall panel of the second part facing away from the first part. The keyboard host includes a circuit board, a cooling fan, a heat-conducting component, and a heat sink. The circuit board and the cooling fan are both located within the first accommodating space. The cooling fan has an air supply outlet, which is directly opposite to the air outlet. The heat-conducting component includes a first heat-conducting section and a second heat-conducting section connected together. The first heat-conducting section is located within the first accommodating space and is thermally connected to the circuit board. The second heat-conducting section is located within the second spatial region. The heat sink is located within the first spatial region and is fixed to the second heat-conducting section. The heat sink is located between the air outlet and the air supply outlet.

[0039] In this way, by setting a second receiving space inside the boss protruding from the first surface, the second space area can be used to accommodate the second heat-conducting section. Therefore, the second heat-conducting section will not occupy the space of the air outlet in the second direction. That is, the orthogonal projection of the second heat-conducting section at the air outlet is located on the outer periphery of the air outlet. This allows the heat sink to occupy more space in the air outlet in the second direction, which is conducive to increasing the size of the heat sink in the second direction to match the size of the air outlet in the second direction. This, in turn, helps to increase the heat dissipation area of ​​the heat sink and improve the heat dissipation effect.

[0040] In one possible implementation of this application, the keyboard host includes a signal interface. The thickness of the second part is greater than the thickness of the first part. The signal interface is located within a second accommodating space of the second part, and the wall panel of the second part has an insertion port directly opposite the signal interface. Since the signal interface is relatively large in the second direction, installing it within the second accommodating space of the second part allows for sufficient accommodation of the signal interface using the thicker second part. Thus, when the foldable device is folded, the display is stacked on top of the first part and located on the side of the second part closer to the first part. Therefore, the display and the signal interface do not overlap in the direction perpendicular to the second direction. This is advantageous compared to placing the signal interface within the first part, where the second folding body overlaps with the signal interface in the direction perpendicular to the second direction in the folded state, thereby reducing the overall thickness of the foldable device in the folded state.

[0041] In one possible implementation of this application, the boss has a second surface facing the same direction as the first surface; the first folding body and the second folding body have a maximum opening angle, and when the angle between the first folding body and the second folding body is the maximum opening angle, the first end is located on the side facing the plane containing the second surface. This is beneficial for further increasing the maximum opening angle between the first folding body and the second folding body.

[0042] In one possible implementation of this application, the maximum opening angle ranges from 150° to 180°. This satisfies the user's requirements.

[0043] In one possible implementation of this application, in the folded state, the distance between the first end and the boss in the first direction is less than or equal to 1.2 mm. This improves the structural compactness and aesthetics of the foldable device and at least partially avoids the problem of dirt accumulating in the gap between the first end and the boss. Attached Figure Description

[0044] Figure 1 A perspective view of a laptop computer in the related art;

[0045] Figure 2 According to Figure 1 A partial schematic diagram of the cross-sectional structure of the keyboard unit in the laptop shown at line AA;

[0046] Figure 3 This is a schematic diagram of the structure of a foldable device provided in some embodiments of this application;

[0047] Figure 4 According to Figure 3 The diagram shown illustrates the foldable device in its folded state.

[0048] Figure 5 According to Figure 3 An exploded view of the keyboard unit shown;

[0049] Figure 6 According to Figure 4 A partial schematic diagram of the cross-sectional structure of the keyboard host at the BB line is shown;

[0050] Figure 7 According to Figure 4 A perspective view of the foldable device from another angle;

[0051] Figure 8 This is a schematic diagram illustrating the process of a foldable device switching between a folded state and a fully open state in some possible embodiments of this application.

[0052] Figure 9 According to Figure 3 The diagram shows the process of a foldable device switching between a folded state and a fully open state.

[0053] Figure 10 According to Figure 3 The cross-sectional view of the foldable device shown at point C;

[0054] Figure 11 According to Figure 10 The enlarged view of the circled part at point D of the structure shown;

[0055] Figure 12 According to Figure 3 An exploded view of the foldable device is shown below;

[0056] Figure 13 According to Figure 12 A three-dimensional view of the rotating shaft mechanism shown;

[0057] Figure 14 According to Figure 13 An exploded view of the rotating shaft mechanism shown;

[0058] Figure 15 According to Figure 13 A partial structural schematic diagram of the rotating shaft mechanism shown;

[0059] Figure 16 According to Figure 14 and Figure 15 The diagram shows a partial fit between the mating section and the lifting support in a plane perpendicular to the third direction.

[0060] Figure 17 According to Figure 15 The diagram shown is an exploded view of the damping structure.

[0061] Figure 18 Perspective view of a rotating shaft mechanism provided for other embodiments of this application;

[0062] Figure 19 According to Figure 18 The diagram shown is an exploded view of the rotating shaft mechanism. Detailed Implementation

[0063] In the embodiments of this application, the terms "exemplarily" or "for example" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplarily" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplarily" or "for example" is intended to present the relevant concepts in a specific manner.

[0064] In the description of the embodiments of this application, the term "and / or" refers to and covers any and all possible combinations of one or more of the associated listed items. The term "and / or" describes an association relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Additionally, the character " / " in this application generally indicates that the preceding and following related objects have an "or" relationship.

[0065] In the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation", "connection" and "linking" should be interpreted broadly. For example, "linking" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium.

[0066] In the description of embodiments of this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0067] As used herein, “parallel,” “perpendicular,” and “equal” include the described situation and situations that are similar to the described situation, within an acceptable range of deviation, which is determined by those skilled in the art taking into account the measurement under discussion and the error associated with the measurement of the particular quantity (i.e., the limitations of the measurement system). For example, “parallel” includes absolute parallelism and approximate parallelism, where the acceptable range of deviation for approximate parallelism may be, for example, within ±5° or ±10°; “perpendicular” includes absolute perpendicularity and approximate perpendicularity, where the acceptable range of deviation for approximate perpendicularity may also be, for example, within ±5° or ±10°. “equal” includes absolute equality and approximate equality, where the acceptable range of deviation for approximate equality may be, for example, the difference between the two equals being less than or equal to 5% of either one.

[0068] Please see Figure 1 and Figure 2 , Figure 1 This is a perspective view of a laptop computer in the related art. Figure 2 According to Figure 1The diagram shows a partial cross-sectional view of the keyboard unit 2 in the laptop computer at line AA. The laptop computer includes the keyboard unit 2 and the display 1.

[0069] The keyboard host 2 includes a casing 21, a circuit board (not shown in the figure), a cooling fan 23, a heat sink 24, and a heat-conducting component 25.

[0070] Specifically, an air inlet 21a is provided on the bottom wall of the outer casing 21. An air outlet 21b is provided on the rear side wall of the outer casing 21.

[0071] The circuit board is housed within the casing 21. A cooling fan 23 is located within the casing 21 to dissipate heat from the circuit board. The air inlet 231 of the cooling fan 23 faces the air outlet 21b. A heat sink 24 is located at the air inlet 231 of the cooling fan 23. The heat sink 24 includes multiple spaced-apart heat dissipation fins. The heat sink 24 is thermally connected to the circuit board via a thermally conductive component 25. One end of the thermally conductive component 25 connected to the heat sink 24 is located at the air inlet 231 of the cooling fan 23.

[0072] When the cooling fan 23 is working, the cooling fan 23 can drive the airflow to enter the housing 21 through the air inlet 21a, and blow it to the heat sink 24 and the heat conductor 25 through the air outlet 231, and exchange heat with the heat sink 24 and the heat conductor 25. The airflow after heat exchange is discharged from the air outlet 21b.

[0073] Because the heat sink 24 includes multiple spaced-apart heat dissipation fins, its heat dissipation area is relatively large. Therefore, the heat exchange capacity between the heat sink 24 and the airflow is better than that between the heat conductor 25 and the airflow. However, since a portion of the heat conductor 25 is located at the air outlet 231 of the cooling fan 23, it occupies a portion of the space at the air outlet 231. This results in a reduction in the height of the heat sink 24, thereby reducing its heat dissipation area and consequently worsening the laptop's cooling performance. If the height of the heat sink 24 were set to match the height of the air outlet 231 to improve cooling, the overall thickness of the heat sink 24 and the heat conductor 25 would increase, leading to an increase in the thickness of the keyboard 2. When the display 1 is covered by the keyboard 2, the increased thickness of the laptop makes it difficult to meet user needs.

[0074] To address the aforementioned technical problems, this application provides a foldable device. This foldable device includes, but is not limited to, electronic devices such as laptops, mobile phones, laptop computers, personal digital assistants (PDAs), personal computers, and in-vehicle devices. The foldable device can also be a combination of any of the aforementioned electronic devices and accessories for those devices (such as phone holders, tablet holders, selfie sticks, protective cases, etc.).

[0075] Please see Figure 3 , Figure 3 This is a schematic diagram of the structure of a foldable device 100 provided in some embodiments of this application. In this embodiment, the foldable device 100 is a laptop computer. The foldable device 100 includes a display 1 (also called a screen end), a keyboard host 2 (also called a system end), and a hinge mechanism 3.

[0076] Display 1 is used to display images, videos, etc. Display 1 can form the second fold of the foldable device 100.

[0077] Please continue reading. Figure 3 The display 1 has a first end 13 and a second end 14.

[0078] The display 1 includes a display screen 11 and a back cover 12. The display screen 11 can be a flexible display screen or a rigid display screen. The back cover 12 is used to protect the display screen 11. The back cover 12 can cover the perimeter of the display screen 11 and the back of the display screen 11.

[0079] The keyboard host 2 is used to input commands and data, and controls the display 1 to display images and videos based on the input commands and data. The keyboard host 2 can constitute the first fold of the foldable device 100.

[0080] The keyboard host 2 and the first end 13 of the display 1 are rotatably connected via a pivot mechanism 3. The rotatable connection between the keyboard host 2 and the display 1 allows the foldable device 100 to switch between an open state and a folded state.

[0081] For ease of description in the following embodiments, an XYZ coordinate system is established for the keyboard host 2. Specifically, the extension direction of the rotation center line between the keyboard host 2 and the display 1 is defined as the X-axis direction (i.e., the third direction), the thickness direction of the keyboard host 2 is defined as the Z-axis direction (i.e., the second direction), and the direction perpendicular to both the X-axis and Z-axis directions is defined as the Y-axis direction (i.e., the first direction). It is understood that the coordinate system settings of the keyboard host 2 can be flexibly set according to actual needs, and are not specifically limited here.

[0082] For example, there are two hinge mechanisms 3, which are arranged side-by-side and spaced apart along the X direction, and are symmetrically arranged to ensure the connection stability between the keyboard host 2 and the display 1, and also to ensure the stability of the rotation of the foldable device 100. In some other embodiments, there may be one hinge mechanism 3. In this case, the hinge mechanism 3 may be located in the middle area of ​​the keyboard host 2 in the X direction to ensure the stability of the rotation of the foldable device 100. In other embodiments, there may be more than two hinge mechanisms 3. This application does not specifically limit the number of hinge mechanisms 3.

[0083] Please continue reading. Figure 3 The keyboard host 2 includes a casing 21 and a keyboard 22.

[0084] The outer casing 21 serves as a supporting "skeleton" for the keyboard host 2, supporting and securing the keyboard 22. The outer casing 21 has a receiving space for accommodating circuit components (not shown). These circuit components include, but are not limited to, circuit boards, etc.

[0085] Please continue reading. Figure 3 The outer casing 21 includes a first part 211 and a second part 212.

[0086] Keyboard 22 is mounted on the first part 211. Exemplary methods of connection between keyboard 22 and the first part 211 include, but are not limited to, adhesive bonding, welding, snap-fitting, riveting, or screw connection. Keyboard 22 allows input of commands and data to the keyboard host 2.

[0087] The first surface of part 211 is a first surface on one side in the Z-axis direction, and this first surface faces the same direction as the outer surface of the keyboard. For ease of understanding, the first surface will be referred to as "keyboard surface A1" below.

[0088] The second part 212 is located at one circumferential end of the first part 211 and is connected to the first part 211. Specifically, in Figure 1 In the specific example shown, the second part 212 and the first part 211 are arranged in the Y-axis direction and connected. The surface of the second part 212 that faces the same direction as the keyboard surface A1 is the second surface A3.

[0089] Please continue reading. Figure 3 The second part 212 has a larger dimension in the Z-direction than the first part 211. As a result, a portion of the second part 212 protrudes from the keyboard surface A1; that is, in the Z-direction, the second surface A3 protrudes relative to the keyboard surface A1. Consequently, the portion of the second part 212 that protrudes from the keyboard surface A1 can form a boss 2121, meaning the second part 212 has a boss 2121 protruding from the keyboard surface A1.

[0090] When the foldable device 100 is in the open state, please continue reading. Figure 3 The angle α between the display 1 and the keyboard host 2 is greater than 0° and less than 360°. It should be noted that the "angle α between the keyboard host 2 and the display 1" in this embodiment refers to the angle between the display surface A2 of the display 1 and the keyboard surface A1 of the keyboard host 2.

[0091] The foldable device 100 can be opened in two states: fully open and partially open. When the foldable device 100 is fully open, the angle α between the display 1 and the keyboard host 2 is the maximum opening angle. This "maximum opening angle" refers to the angle α between the display 1 and the keyboard host 2 when they are opened to their limit.

[0092] Please see Figure 4 , Figure 4 According to Figure 3 The diagram shows the foldable device 100 in a folded state. When the foldable device 100 is in a folded state, the display 1 and the first part 211 of the keyboard host 2 are stacked, with the first end 13 located between the second end 14 and the boss 2121, and the display surface A2 of the display 1 facing the keyboard surface A1 of the keyboard host 22.

[0093] That is, the display 1 is stacked on the keyboard surface A1, the first end 13 is located between the second end 14 and the boss 2121, and the display surface A2 of the display 1 is opposite to the keyboard surface A1 of the keyboard host 22.

[0094] In this way, the display 1 is positioned on the side of the second part 212 closer to the first part 211, meaning that the display 1 is not stacked with the second part 212, and the opening angle between the display 1 and the keyboard host 2 is 0 degrees. In this state, the size of the foldable device 100 can be reduced, making it easier to store and carry, and the display interface of the display 1 and the keyboard surface A1 of the keyboard host 2 can be protected against scratches and dust.

[0095] Based on this, for example, in order to reduce the thickness of the foldable device 100 and optimize its appearance, and to prevent the display 1 from being scratched, in the folded state, the surface of the display 1 facing away from the display surface A2 (i.e., the surface facing away from the first part 211) and the second surface A3 are flush. In other examples, in the folded state, the surface of the display 1 facing away from the display surface A2 and the second surface A3 may not be flush. For example, in the folded state, the surface of the display 1 facing away from the display surface A2 is recessed from the second surface A3, so that the protrusion 2121 can protect the display 1 in the folded state. Or, in the folded state, the surface of the display 1 facing away from the display surface A2 protrudes from the second surface A3.

[0096] It is worth noting that in the intermediate open state of the foldable device 100, the angle α between the display 1 and the keyboard host 2 is less than the maximum opening angle in the fully open state, but greater than 0° in the folded state. The intermediate open state is located on the switching path of the foldable device 100 between the folded state and the fully open state.

[0097] Please see Figure 5 and Figure 6 , Figure 5 According to Figure 3 The diagram shown is an exploded view of the keyboard host 2. Figure 6 According to Figure 4 The diagram shows a partial cross-sectional view of the keyboard main unit 2 at the BB line. The outer casing 21 has an air inlet 21a and an air outlet 21b. The air inlet 21a is located on the first part 211. Specifically, the air inlet 21a is located on the side panel of the first part 211 facing away from the keyboard surface A1 in the Z direction. The air outlet 21b is located on the side panel of the second part 212 facing away from the first part 211.

[0098] Both the air inlet 21a and the air outlet 21b are connected to the accommodating space Q. In this way, outside air can enter the interior of the casing 21 through the air inlet 21a, exchange heat with the circuit components inside the casing 21, and then be discharged through the air outlet 21b to dissipate heat from the keyboard host 2.

[0099] Please continue reading. Figure 5 and Figure 6 The first part 211 has a first receiving space Q1. The second part 212 has a second receiving space Q2. The first receiving space Q1 and the second receiving space Q2 are connected to form the receiving space Q of the outer shell 21.

[0100] The second accommodating space Q2 includes a first spatial region Q21 and a second spatial region Q22. The first spatial region Q21 and the second spatial region Q22 are arranged in the Z direction and are connected. The first spatial region Q21 is directly opposite to and connected to the first accommodating space Q1 in the Y direction. The second spatial region Q22 is located on one side of the first spatial region in the Z direction and is formed within the boss 2121.

[0101] Please continue reading. Figure 5 and Figure 6 The keyboard host 2 also includes a circuit board 28, a cooling fan 23, a heat sink 24, and a heat-conducting component 25.

[0102] The circuit board 28 is mounted within the first receiving space Q1. For example, the circuit board 28 can be mounted within the first receiving space Q1 by means of adhesive, soldering, snap-fit, or screw connection.

[0103] The circuit board 28 can be a rigid circuit board, a flexible circuit board, or a rigid-flex circuit board. The circuit board 28 can use FR-4 dielectric substrate, Rogers dielectric substrate, or a hybrid dielectric substrate of Rogers and FR-4, etc.

[0104] Circuit board 28 is used to integrate electronic components. These electronic components include, but are not limited to, central processing unit (CPU), graphics processing unit (GPU), resistors, capacitors, inductors, potentiometers, electron tubes, electromechanical components, connectors, discrete semiconductor devices, electroacoustic devices, laser devices, electronic displays, optoelectronic devices, sensors, power supplies, switches, micro motors, electronic transformers, relays, etc.

[0105] The cooling fan 23 is installed within the first receiving space Q1. For example, the cooling fan 23 can be installed within the first receiving space Q1 by means of adhesive, welding, snap-fit ​​or screw connection.

[0106] The cooling fan 23 forces air from outside the housing 21 into the accommodating space Q through the air inlet 21a and then out through the air outlet 21b to form a first airflow. In some embodiments, the cooling fan 23 can be a centrifugal fan, with its axis aligned with the Z-direction. Centrifugal fans have a smaller axial dimension and occupy less height within the housing 21, which is beneficial for the thinness of the keyboard host 2. In other embodiments, the cooling fan 23 can also be an axial fan or a cross-flow fan, etc., without specific limitations.

[0107] Based on this, there are two cooling fans 23. There are two air inlets 21a and two air outlets 21b, with one cooling fan 23 corresponding to one air inlet 21a and one air outlet 21b. Each cooling fan 23 has an inlet and an outlet 231. The inlet of each cooling fan 23 is directly opposite to and connected to the corresponding air inlet 21a. The outlet 231 of each cooling fan 23 is directly opposite to and connected to the corresponding air outlet 21b.

[0108] In other examples, the relationship between the air inlet 21a and the cooling fan 23 may not be one-to-one. Similarly, the relationship between the air outlet 21b and the cooling fan 23 may not be one-to-one. For example, the inlets of all the cooling fans 23 may be directly opposite and connected to the same air inlet 21a, and the air outlets 231 of all the cooling fans 23 may be opposite and connected to the same air outlet 21b.

[0109] Furthermore, the number of cooling fans 23 is not limited to two. In other examples, the number of cooling fans 23 may also be one, three, or four.

[0110] The radiator 24 is located within the first spatial region Q21, and is positioned between the air inlet 231 and the air outlet 21b. In this example, the number of radiators 24 corresponds one-to-one with the number of cooling fans 23, and a radiator 24 is provided at the air inlet 231 of each cooling fan 23.

[0111] For example, the heat sink 24 is defined by a plurality of parallel and spaced-apart fins. An airflow channel is formed between two adjacent fins, connecting the outlet 21b and the inlet 231. For example, the plurality of fins are spaced apart along the X-axis. The material of the fins includes, but is not limited to, aluminum or copper.

[0112] The heat-conducting component 25 includes, but is not limited to, a heat spreader or a heat pipe. The heat pipe comprises a shell, a wick, and end caps. The shell is a hollow structure, and the wick covers the inner wall of the shell. After creating a negative pressure inside the shell, a suitable amount of working fluid is filled, filling the capillary porous material of the wick that is tightly attached to the inner wall of the tube with liquid. The end caps then seal the tube. When one end of the heat pipe (the evaporation section) is heated, the liquid in the wick evaporates and vaporizes. The vapor flows to the other end (the condensation section) under a small pressure difference, releasing heat and condensing into liquid. The liquid then flows back to the evaporation section along the porous material due to capillary force. This cyclical operation achieves rapid heat transfer.

[0113] A vapor chamber (VC), also known as a heat exchanger, is a vacuum chamber with a finely structured inner wall, typically made of copper, and filled with coolant. When heat is conducted from the heat source to the evaporation section, the coolant in the low-vacuum environment begins to vaporize, absorbing heat and rapidly expanding in volume. The gaseous cooling medium quickly fills the entire vacuum chamber. When the gaseous working fluid comes into contact with a cooler area, condensation occurs. This condensation releases the heat accumulated during evaporation. The condensed coolant then returns to the evaporation heat source through capillary channels in the microstructure. This cycle repeats continuously within the chamber, achieving rapid heat transfer.

[0114] The heat-conducting component 25 is located on one side of the circuit board 28 in the Z-axis direction and is thermally connected to the circuit board 28.

[0115] Specifically, the heat-conducting component 25 includes a first heat-conducting section 251 and a second heat-conducting section 252.

[0116] The first heat-conducting section 251 serves as the evaporation section of the heat-conducting element 25, that is, the first heat-conducting section 251 is the section of the heat-conducting element 25 that first comes into contact with the heat source. Therefore, the heat-conducting element 25 can be thermally connected to the circuit board 28 via the first heat-conducting section 251. Since the circuit board 28 is located within the first receiving space Q1, the first heat-conducting section 251 can be disposed within the first receiving space Q1.

[0117] Please continue reading. Figure 5 and Figure 6 The second heat-conducting section 252 is arranged and connected to the first heat-conducting section 251 in the XY direction. The second plate section serves as the condensation section of the heat-conducting element 25, that is, a section on the heat-conducting element 25 used for heat dissipation.

[0118] The second heat-conducting section 252 is located within the second spatial region Q22. The heat sink 24 is fixed to the second heat-conducting section 252 and is thermally connected to the second heat-conducting section 252. For example, the heat sink 24 can be fixed to the second heat-conducting section 252 by welding, snap-fitting, or gluing.

[0119] In this way, the heat generated by the electronic components on the circuit board 28 can be transferred to the first heat-conducting section 251, and then further transferred to the second heat-conducting section 252, and finally to the heat sink 24. At the heat sink 24, the heat is exchanged with the first airflow flowing through the heat sink 24 by the cooling fan 23 in a forced convection manner, thereby achieving the purpose of cooling the foldable device 100.

[0120] The above analysis shows that by setting the thickness of the second part 212 to be greater than the thickness of the first part 211, a portion of the second part 212 protrudes from the keyboard surface A1 to form a boss 2121. This allows the second space area Q22 within the boss 2121 to accommodate the second heat-conducting section 252. Consequently, the second heat-conducting section 252 will not occupy the space of the air outlet 231 in the Z direction. That is, the orthogonal projection of the second heat-conducting section 252 at the air outlet 231 is located on the outer periphery of the air outlet 231. This facilitates the heat sink 24 occupying more space in the air outlet 231 in the Z direction, which is beneficial for increasing the size of the heat sink 24 in the Z direction to match the size of the air outlet 231 in the Z direction. This, in turn, helps to increase the heat dissipation area of ​​the heat sink 24 and improve the heat dissipation effect. On the other hand, when the foldable device 100 is in the folded state, the display 1 is stacked on the keyboard surface A1 and is located on the side of the second part 212 closer to the first part 211. Compared with the method of avoiding the second heat-conducting section 252 occupying the space of the air outlet 231 in the Z direction by increasing the thickness of the entire keyboard host 2, this method is beneficial for reducing the thickness of the foldable device 100 in the folded state.

[0121] On a single heat-conducting element 25, the number of second heat-conducting sections 252 can be one or more. Figure 5 In the illustrated embodiment, there are two second heat-conducting sections 252. The two second heat-conducting sections 252 are located at opposite ends of the first heat-conducting section 251 along the X-axis. The number of heat sinks 24 is the same as the number of second heat-conducting sections 252, and they correspond one-to-one. However, this application is not limited to this; in other examples, when there is only one heat sink 24, there can also be only one second heat-conducting section 252. Alternatively, multiple second heat-conducting sections 252 can be connected to a single heat sink 24.

[0122] Please see Figure 7 , Figure 7 According to Figure 4 The foldable device 100 is shown from another perspective. The keyboard host 2 also includes a signal interface 26. The signal interface 26 includes, but is not limited to, a universal serial bus (USB) device. The USB device can be a USB Type-C interface device, a USB Type-A interface device, a USB Type-B Micro-B interface device, or a USB Type-B interface device.

[0123] Signal interface 26 is electrically connected to circuit board 28. Signal interface 26 is located within the second receiving space Q2 and is spaced apart from the second heat-conducting section 252 and heat sink 24 described above. Exemplarily, the connection between signal interface 26 and the second part 212 includes, but is not limited to, snap-fit, soldering, or screw connection.

[0124] Based on this, please continue to refer to Figure 7 The second part 212 has an insertion port 21c opposite to the signal interface 26 on its back panel facing the first part 211. Since the signal interface 26 has a relatively large Z-axis dimension, installing the signal interface 26 within the second accommodating space Q2 of the second part 212 allows for sufficient accommodation of the signal interface 26 using the thicker second part 212. Furthermore, when the foldable device 100 is folded, the display 1 is stacked on top of the first part 211 and located on the side of the second part 212 closest to the first part 211. Therefore, the display 1 and the signal interface 26 do not overlap in the XY direction. This is beneficial for reducing the overall thickness of the foldable device 100 in the folded state compared to placing the signal interface 26 within the first part 211, where the display 1 and signal interface 26 overlap in the XY direction in the folded state.

[0125] In other examples, the insertion port 21c may also be located on one or both sides of the second part 212 in the X-axis direction.

[0126] Please see Figure 8 , Figure 8This diagram illustrates the process of switching between a foldable device 100 and a fully open state in some possible embodiments of this application. In this foldable device 100, the display 1 rotates relative to the keyboard host 2 about a rotation center line o1. In this example, the position of the rotation center line o1 relative to the keyboard host 2 and the display 1 is fixed.

[0127] Based on this, in order to ensure that the foldable device 100 can switch between a folded state and a fully open state, there is a gap H in the Y-axis direction between the first end 13 and the second part 212. The size of the gap H is related to the thickness of the display 1; the greater the thickness of the display 1, the larger the gap H. Taking a thickness of 4.5mm for the display 1 as an example, to ensure normal opening and closing, the gap size H must be at least 3mm.

[0128] like Figure 8 In (a), the user can apply a force to the display 1 in the direction indicated by arrow F, so that the display 1 rotates relative to the keyboard host 2 about the rotation center line o1. When the display 1 rotates to the point where it interferes with the second part 212, the angle α between the display 1 and the keyboard host 2 reaches its maximum opening angle, as shown in (a). Figure 8 (b) In this context, the boss 2121 protrudes from the keyboard surface A1. Therefore, even with the aforementioned gap H, the boss 2121 significantly restricts the rotation of the monitor 1, resulting in a relatively small maximum opening angle between the monitor 1 and the keyboard host 2, which is insufficient to meet the user's needs.

[0129] One possible solution is to increase the size of the gap H in the Y-axis direction between the first end 13 and the second part 212 when folded, for example, H could be 5mm or 6mm. While this helps to increase the maximum opening angle between the display 1 and the keyboard host 2 to meet user needs, the larger gap H in the Y-axis direction when folded can lead to dirt accumulation and poor structural compactness. Furthermore, it can reduce the size of the display 1, decreasing its display area and affecting user experience.

[0130] To resolve the above technical issues, please refer to Figure 9 , Figure 9 According to Figure 3The diagram illustrates the switching process between a foldable device 100 and a fully open state. The hinge mechanism 3 is configured to drive the display 1 to move relative to the keyboard 2 along the Z-axis when an external force drives the display 1 to rotate relative to the keyboard 2. In other words, the hinge mechanism 3 allows relative rotation between the display 1 and the hinge mechanism 3, and when an external force drives the display 1 to rotate relative to the keyboard 2, the hinge mechanism 3 can also drive the display 1 to move along the Z-axis.

[0131] Specifically, when an external force drives the display 1 freely Figure 9 The folding state shown in (a) proceeds sequentially towards Figure 9 The intermediate open state shown in (b) and Figure 9 When the fully open state is switched as shown in (c), the hinge mechanism 3 can drive the display 1 to move away from the keyboard host 2 along the Z-axis relative to the keyboard host 2, that is, along... Figure 9 The movement is indicated by arrow F1. During this process, the rotation center line o1 of the relative rotation between the display 1 and the keyboard host 2 moves away from the keyboard host 2 along the Z-axis. At this time, the distance between the display 1 and the keyboard surface A1 in the Z-axis direction continuously increases, and along the Y-axis direction, the area of ​​the vertical projection of the display 1 on the side of the boss 2121 continuously decreases. Therefore, the restrictive effect of the second part 212 on the display 1 continuously weakens, which helps to increase the maximum opening angle between the display 1 and the keyboard host 2 to meet the user's usage needs. Moreover, by rotating the display 1 to move the display 1 relative to the keyboard host 2 in the Z-axis direction, it is beneficial to reduce the gap size between the boss 2121 and the first end 13 in the Y-axis direction when folded, improve the structural compactness of the foldable device 100, prevent the problem of dirt accumulation between the boss 2121 and the first end 13, and help to increase the size of the display 1 in the Y-axis direction, thereby increasing the display area of ​​the display 1.

[0132] When external force drives display 1 freely Figure 9 The fully open state shown in (c) in the diagram is sequentially moved towards... Figure 9 The intermediate open state shown in (b) and Figure 9 When switching between the folded states shown in (a), the hinge mechanism 3 can drive the display 1 to move relative to the keyboard host 2 along the Z-axis direction towards the keyboard host 2, that is, along... Figure 9The movement is indicated by arrow F2. During this process, the rotation center line o1 of the relative rotation between the display 1 and the keyboard host 2 also continuously moves closer to the keyboard host 2 along the Z-axis. At this time, the distance between the display 1 and the keyboard surface A1 in the Z-direction continuously decreases. This allows the display 1 to be stacked on the keyboard surface A1 when the foldable device 100 is in the folded state, reducing the gap between the display surface A2 of the display 1 and the keyboard surface A1 in the Z-direction and improving the compactness of the structure.

[0133] In some embodiments, in the folded state, the size of the gap H between the first end 13 and the boss 2121 in the Y-axis direction is greater than 0 and less than or equal to 1.2 mm. For example, the gap H between the first end 13 and the boss 2121 in the Y-axis direction can be 1.1 mm, 1 mm, 0.8 mm, 0.6 mm, 0.5 mm, 0.4 mm, 0.3 mm, or 0.2 mm. This improves the structural compactness and aesthetics of the foldable device 100 and at least partially solves the problem of dirt accumulation at the gap H.

[0134] Please continue reading. Figure 9 When the angle between the display 1 and the keyboard host 2 is the maximum opening angle, that is, when the folding device 100 is in the fully open state, the first end 13 is located on the side facing the plane containing the second surface A3. In other words, the height of the first end 13 relative to the keyboard surface A1 in the Z-direction is greater than or equal to the height of the second surface A3 relative to the keyboard surface A1 in the Z-direction. This helps to further increase the maximum opening angle between the display 1 and the keyboard host 2.

[0135] For example, the maximum opening angle ranges from 150° to 180°. For instance, the maximum opening angle can be 155°, 160°, 165°, 168°, 170°, 172°, 175°, 178°, or 180°.

[0136] Please see Figure 10 , Figure 11 and Figure 12 , Figure 10 According to Figure 3 The cross-sectional view of the foldable device 100 at CC is shown. Figure 11 According to Figure 10 The diagram shows an enlarged view of the circled portion at point D. Figure 12 According to Figure 3 The exploded view of the foldable device 100 shown is in... Figure 10 and Figure 12The keyboard 22 is not shown. The panel containing the keyboard surface A1 has an opening A21 communicating with the receiving space Q. A hinge mechanism 3 passes through the opening A21. One end of the hinge mechanism 3 is installed within the receiving space Q, and the other end is connected to the display 1. This design not only results in a compact structure, reducing the thickness of the foldable device 100, but also allows for protection of the hinge mechanism 3 by the outer casing 21, improving the reliability of its operation. In other examples, the hinge mechanism 3 may also be located on the outside of the keyboard main unit 2.

[0137] Specifically, the opening A21 is located at the end of the wall panel where the keyboard surface A1 is located, near the boss 2121. This helps to reduce the gap H between the first end 13 and the boss 2121 in the Y-axis direction.

[0138] The shape of the opening A21 includes, but is not limited to, a rectangle, a circle, a triangle, or an irregular shape.

[0139] Please continue reading. Figure 11 and Figure 12 To facilitate the connection between the hinge mechanism 3 and the display 1 and improve the structural compactness of the foldable device 100, the first end 13 has a clearance notch 132 and a protrusion 131. The protrusion 131 protrudes away from the second end 14 relative to the clearance notch 132. A portion of the hinge mechanism 3 is located within the clearance notch 132. In this way, by providing the clearance notch 132 to accommodate a portion of the hinge mechanism 3, the structural compactness of the foldable device 100 is improved.

[0140] Please continue reading. Figure 11 and Figure 12 In order to further improve the structural compactness of the foldable device 100, a relief groove 212a is formed at one end of the boss 2121 in the Y-axis direction near the first part 211. The relief groove 212a penetrates the boss 2121 in the Z-direction. The protrusion 131 is located in the relief groove 212a. The part of the rotating shaft mechanism 3 that is accommodated in the relief notch 132 is also located in the relief groove 212a.

[0141] exist Figure 11 and Figure 12 In the specific example shown, there are two rotating shaft mechanisms 3 and two corresponding clearance notches 132. The two clearance notches 132 are located at both ends of the protrusion 131 in the X-axis direction. There is one clearance groove 212a, and one protrusion 131 and two rotating shaft mechanisms 3 are located at this clearance groove 212a. It is understood that in other examples, the number of rotating shaft mechanisms 3 and clearance notches 132 may be one or more. This application does not impose any specific limitations in this regard.

[0142] The following section will focus on a detailed explanation of the specific structure of the rotating shaft mechanism 3.

[0143] Please see Figure 13 and Figure 14 , Figure 13 According to Figure 12 The three-dimensional view of the rotating shaft mechanism 3 shown. Figure 14 According to Figure 13 The exploded view of the rotating shaft mechanism 3 is shown. The rotating shaft mechanism 3 includes a base 31, a mating part 38, a fixed shaft 33, a drive gear 32, a lifting bracket 34, a damping structure 36, and a protective cover 37.

[0144] The base 31 supports and mounts the mating parts 38, the fixed shaft 33, the drive gear 32, the lifting bracket 34, the damping structure 36, and the protective cover 37, etc., so that the hinge mechanism 3 can form a module, thereby simplifying the installation between the hinge mechanism 3 and the keyboard host 2, and between the hinge mechanism 3 and the monitor 1. Of course, it is understood that in other examples, the base 31 may not be provided in the hinge mechanism 3.

[0145] To improve the structural strength of the base 31, the base 31 can be made of metal. In other examples, the base 31 can also be made of plastic.

[0146] The base 31 is fixed to the keyboard host 2. Specifically, the base 31 is fixed within the receiving space Q of the outer casing 21 (in conjunction with...). Figure 11 The connection between the base 31 and the housing 21 includes, but is not limited to, adhesive bonding, welding, snap-fitting, or screw connection. The base 31 has an installation space 311. The side of the base 31 facing the opening A21 is open.

[0147] The mating part 38 is fixed within the mounting space 311 of the base 31. In other examples, when the base 31 is not included in the hinge mechanism 3, the mating part 38 can also be directly fixed within the receiving space Q, as long as the mating part 38 is relatively fixed to the keyboard host 2.

[0148] exist Figure 13 and Figure 14 In the specific example shown, the mating component 38 is a rack. The rack extends along the Z-direction. The rack can be fixed to the inner wall of the mounting space 311. Exemplarily, the connection between the rack and the base 31 includes, but is not limited to, adhesive bonding, welding, snap-fitting, or screw connection. In other examples, the rack and base 31 can also be integrally molded, which helps to simplify the overall processing technology of the rack and base 31 and reduce manufacturing costs.

[0149] The fixing shaft 33 is located within the clearance notch 132 of the display 1 and at the clearance groove 212a of the boss 2121. One end of the fixing shaft 33 along the X-axis is fixed to the wall surface of the protrusion 131 facing the clearance notch 132. The connection method between the fixing shaft 33 and the display 1 includes, but is not limited to, adhesive bonding, welding, snap-fitting, or screw connection.

[0150] For details, please continue reading. Figure 13 and Figure 14 The fixed shaft 33 includes a fixed section 331. The protrusion 131 faces the wall surface of the clearance notch 132 (in conjunction with...). Figure 12 The mounting hole 1311 is provided on the mounting surface. The fixing segment 331 is inserted into the mounting hole 1311. For example, the fixing segment 331 may be interference-fitted with the mounting hole 1311. To prevent the fixing segment 331 from rotating within the mounting hole 1311, the shape of the mounting hole 1311 is non-circular, and the cross-sectional shape of the fixing segment 331 is also non-circular. The shape of the mounting hole 1311 is adapted to the shape and size of the fixing segment 331.

[0151] For example, the shapes of the fixing segment 331 and the mounting hole 1311 are both rectangular, triangular, oval or irregular.

[0152] In other examples, the protrusion 131 has a protruding post on the wall facing the clearance notch 132, and the fixed shaft 33 has a mounting hole at one end near the protrusion 131 along the X-axis direction, with the protruding post interference fit into the mounting hole.

[0153] Please continue reading. Figure 14 The fixed shaft 33 also includes a mating section 332. The mating section 332 is located at the end of the fixed section 331 away from the protrusion 131 in the X-axis direction. Exemplarily, the fixed section 331 and the mating section 332 are integrally formed, which helps to improve the connection reliability between the fixed section 331 and the mating section 332 and simplifies the manufacturing process of the fixed shaft 33. Also exemplaryly, the connection between the mating section 332 and the fixed section 331 can be achieved by adhesive bonding, welding, snap-fitting, or screw connection.

[0154] The drive gear 32 is fixed to the mating section 332. In other examples, the rotating shaft mechanism 3 may not include the fixed shaft 33. The drive gear 32 can be directly fixed within the clearance notch 132. This is as long as the drive gear 32 is fixed relative to the display 1.

[0155] In this way, when the monitor 1 rotates relative to the keyboard host 2, the drive gear 32 rotates synchronously with the monitor 1 under its drive. The rotation center line of the drive gear 32 is the aforementioned rotation center line o1.

[0156] Specifically, the drive gear 32 has a first shaft hole 321. The first shaft hole 321 is formed as a non-circular shape. The mating section 332 is adapted to the first shaft hole 321. For example, the shape of the first shaft hole 321 is rectangular, triangular, oblong, or irregular.

[0157] This facilitates the synchronous rotation of the drive gear 32 and the fixed shaft 33, thereby preventing relative rotation between the drive gear 32 and the fixed shaft 33, and thus improving the reliability of the rotating shaft mechanism 3.

[0158] Please continue reading. Figure 14 and combined Figure 15 , Figure 15 According to Figure 13 The diagram shows a partial structural schematic of the rotating shaft mechanism 3. The drive gear 32 engages with the rack. Through the engagement of the drive gear 32 and the rack, the drive gear 32 can move relative to the rack in the Z-axis during rotation. In this way, the engagement of the drive gear 32 and the rack converts the relative rotation between the display 1 and the keyboard host 2 into movement of the display 1 relative to the keyboard host 2 in the Z-axis. The structure is simple and easy to manufacture.

[0159] It is understandable that the "fitting" between the drive gear 32 and the rack can be either indirect or direct. Direct fit refers to the direct meshing of the drive gear 32 and the rack. Indirect fit refers to the indirect meshing between the drive gear 32 and the rack via a driven gear.

[0160] In this specific example, since the drive gear 32 is fixed relative to the display 1, the drive gear 32 is located outside the receiving space Q, and the mating part 38 is located inside the receiving space Q. To achieve the mating of the drive gear 32 and the rack, please refer to [further details needed]. Figure 14 and Figure 15 The rotating shaft mechanism 3 also includes driven gears 35. There are an even number of driven gears 35. The even number of driven gears 35 are arranged sequentially and mesh in the Z direction. The rotation center line o1 of each driven gear 35 is parallel to the rotation center line o1 of the drive gear 32. The even number of driven gears 35 are integrally inserted through the opening A21. The driven gear 35 closest to the drive gear 32 meshes with the drive gear 32, and the driven gear 35 farthest from the drive gear 32 meshes with the rack.

[0161] In this way, on the one hand, by using the driven gear 35 to connect between the drive gear 32 and the rack, it is easy to set the rack inside the housing 21 to reasonably optimize the structural layout of the foldable device 100. On the other hand, the setting of an even number of driven gears 35 can ensure that the rotation direction of the driven gear 35 that cooperates with the rack is consistent with that of the drive gear 32, so as to facilitate the smooth switching of the foldable device 100 between the open state and the folded state.

[0162] It is worth noting that when the rack is located on the outside of the housing 21, or when the rack is longer in the Z direction, the driven gear 35 may not be provided in the rotating shaft mechanism 3.

[0163] Considering that too many driven gears 35 would increase the size and cost of the foldable device 100, specifically, there are two driven gears 35. This reduces the size and cost of the foldable device 100. In other examples, there could also be four, six, or eight driven gears 35.

[0164] Please continue reading. Figure 14 and Figure 15 In order to facilitate the fixing of the driven gear 35, the rotating shaft mechanism 3 also includes two lifting brackets 34.

[0165] Two lifting brackets 34 are arranged opposite each other in the X-axis direction. The lifting bracket 34 farther from the fixed section 331 is the first lifting bracket 34a, and the lifting bracket closer to the fixed section is the second lifting bracket 34b. Each lifting bracket 34 can slide within the mounting space 311 connected to the base 31 via a sliding structure 39.

[0166] It is understandable that when the pivot mechanism 3 does not include the base 31, the lifting bracket 34 can be slidably connected to other structures of the keyboard host 2 through the sliding structure 39, as long as the lifting bracket 34 can slide relative to the keyboard host 2 in the Z direction.

[0167] The driven gear 35 and the drive gear 32 are located between the two lifting brackets 34. This makes the structure more compact.

[0168] The driven gear 35 is rotatably connected to the two lifting brackets 34. In this way, the lifting brackets 34 provide installation space 311 for the driven gear 35, and the sliding engagement between the lifting brackets 34 and the base 31 through the sliding structure 39 also guides the relative movement of the display 1 and the keyboard host 2 in the Z direction, thereby improving the reliability of the foldable device 100 when switching between the open and folded states.

[0169] For example, each driven gear 35 has a connecting shaft 351 at both axial ends, and each lifting bracket 34 has an even number of pivot holes 341. The pivot holes 341 can be blind holes or through holes. Each even number of pivot holes 341 corresponds one-to-one with an even number of driven gears 35. The connecting shaft 351 at one axial end of the driven gear 35 engages with one pivot hole 341 on one of the lifting brackets 34, and the connecting shaft 351 at the other axial end of the driven gear 35 engages with one pivot hole 341 on another lifting bracket 34. This results in a simple structure.

[0170] Please continue reading. Figure 14 and Figure 15 The sliding structure 39 includes a first sliding groove 392 and a first slider 391. The first sliding groove 392 is formed on the inner wall of the mounting space 311 of the base 31. The first slider 391 is disposed on the lifting bracket 34. The first slider 391 slides in engagement with the first sliding groove 392. Thus, the structure is not only simple but also easy to assemble.

[0171] For example, the first slider 391 and the lifting bracket 34 can be integrally molded, which helps to improve the connection reliability of the first slider 391 and the lifting bracket 34 and simplifies the overall processing technology of the first slider 391 and the lifting bracket 34. Also for example, the connection between the first slider 391 and the lifting bracket 34 can be achieved by adhesive bonding, welding, snap-fitting, or screw connection.

[0172] Of course, this application is not limited to this. In other examples, the first slider 391 can also be set on the base 31, and the first groove 392 can be opened on the lifting bracket 34. As long as one of the first groove 392 and the first slider 391 is set on the base 31, and the other of the first groove 392 and the first slider 391 is set on the lifting bracket 34, it is sufficient.

[0173] For example, the shape of the cross section of the first slider 391 parallel to the XY direction includes, but is not limited to, a triangle, a T-shape, a rectangle, or an irregular shape.

[0174] Based on this, to prevent the first slider 391 from disengaging from the first groove 392, the first groove 392 has two opposing sidewalls in the Y-axis direction. In the X-axis direction, facing the opening of the first groove 392, the distance between the two sidewalls gradually decreases. Thus, the first groove 392 can be formed as a dovetail groove, improving the reliability of the engagement between the first groove 392 and the first slider 391.

[0175] Please continue reading. Figure 14 and Figure 15Each lifting bracket 34 has a through hole 342. In the X-axis direction, the aforementioned mating section 332 passes through the through holes 342 on both lifting brackets 34. The mating section 332 is rotatable within the through holes 342. The drive gear 32 is located between the two lifting brackets 34. In this way, the lifting brackets 34 and the drive gear 32 can be supported and mounted using the fixed shaft 33, and since the driven gear 35 is mounted on the lifting bracket 34, the reliability of the engagement between the drive gear 32 and the driven gear 35 is improved.

[0176] For details, please refer to Figure 16 , Figure 16 According to Figure 14 and Figure 15 The diagram shows a partial fit between the mating section and the lifting bracket in a plane perpendicular to a third direction. The through hole 342 is circular, and the outer circumference of the mating section 332 is formed by an arc segment 3322 and a non-arc segment 3321. In this specific example, the non-arc segment 3321 is a planar segment.

[0177] Specifically, there are two circular arc segments 3322 and two non-circular arc segments 3321. The two circular arc segments 3322 are positioned opposite each other, and the two non-circular arc segments 3321 are positioned opposite each other. A circular arc segment 3322 connects the two non-circular arc segments 3321. In other examples, there can be one or more circular arc segments 3322 and non-circular arc segments 3321, as long as the circular arc segments 3322 and non-circular arc segments 3321 are distributed circumferentially in the mating segment 322.

[0178] The diameter of the arc segment 3222 is equal to the diameter of the through hole 342. The non-arc segment 3321 is located on the side of the arc surface containing the arc segment 3322, closer to the center line of the arc segment 3222. In this way, when the fixed shaft 33 rotates relative to the lifting bracket 34, the cooperation between the arc segment 3222 and the through hole 342 can play a guiding role. On the other hand, there can be a gap between the non-arc segment 3321 and the hole wall of the through hole 342, which can reduce the frictional damping of the rotation of the fixed shaft 33 relative to the lifting bracket 34, so as to facilitate the rotation of the fixed shaft 33 relative to the lifting bracket 34, and the structure is simple.

[0179] The relative rotation between the lifting bracket 34 and the fixed shaft 33 is not limited to this. In other possible examples, a rolling bearing (not shown in the figure) can be fitted onto the fixed shaft 33. The rolling bearing is installed in the through hole 342, which can be circular or non-circular.

[0180] Of course, it is understood that in other examples, the lifting bracket 34 and the fixed shaft 33 may not be assembled. Furthermore, in other embodiments, the lifting bracket 34 may not be limited to two; there may also be only one lifting bracket 34.

[0181] The damping structure 36 is used to output damping force for the rotation of the fixed shaft 33. This improves the damping feel when the foldable device 100 switches between the open and folded states, and also helps the foldable device 100 to maintain any open state.

[0182] For details, please continue reading. Figure 14 and Figure 15 A limiting part 333 is provided on the mating section 332. A damping structure 36 is installed on the mating section 332 of the fixed shaft 33. The lifting bracket 34 and the drive gear 32 are located between the limiting part 333 and the damping structure 36. Specifically, the damping structure 36 is located on the side of the first lifting bracket 34a away from the drive gear 32. The damping structure 36 applies a force from the damping structure 36 to the drive gear 32 on the lifting bracket 34 and the drive gear 32 as a whole. In this way, the lifting bracket 34 and the drive gear 32 as a whole can be clamped by the limiting part 333 and the damping structure 36, which can provide damping force for the rotation of the fixed shaft 33, thereby improving the damping feel when the foldable device 100 switches between the open and folded states.

[0183] Please see Figure 17 , Figure 17 According to Figure 15 The diagram shows an exploded view of the damping structure 36. The damping structure 36 includes a friction pad 361, an elastic element 362, and an adjusting nut 363.

[0184] The friction pad 361 is fitted onto the mating section 332 of the fixed shaft 33 and can rotate synchronously with the fixed shaft 33. The friction pad 361 is movable relative to the fixed shaft 33 in the X-axis direction.

[0185] The friction pad 361 is sheet-shaped. For example, the friction pad 361 is a circular sheet.

[0186] The friction pad 361 includes a first friction surface 3611 and a second friction surface 3612 that are opposite each other in its thickness direction (i.e., the X-axis direction). The first friction surface 3611 is used to abut against the lifting bracket 34, i.e., the first lifting bracket 34a. Thus, as the friction pad 361 rotates with the fixed shaft 33, the first friction surface 3611 of the friction pad 361 and the first lifting bracket 34a rub against each other to form damping.

[0187] To facilitate the assembly of the friction pad 361 with the fixed shaft 33 and to ensure that the friction pad 361 can rotate with the fixed shaft 33 and move relative to the fixed shaft 33 in the X-axis direction, the friction pad 361 is provided with a first mounting hole 3613 for engaging with the fixed shaft 33. The first mounting hole 3613 is non-circular. The first mounting hole 3613 penetrates the first friction surface 3611 and the second friction surface 3612, and the first mounting hole 3613 is adapted to the mating section 332.

[0188] Please continue reading. Figure 17 The friction pad 361 has grooves 3614 on its first friction surface 3611 and second friction surface 3612. These grooves 3614 are used to hold lubricants such as lubricating oil and grease, providing lubrication. Thus, when the friction pad 361 rotates relative to the first lifting bracket 34a, the lubricant effectively lubricates the contact surface between the friction pad 361 and the first lifting bracket 34a, reducing wear between them, extending the service life of the rotating shaft mechanism 3, and reducing friction noise.

[0189] The elastic element 362 is sleeved on the mating section 332 and is used to apply a force toward the first lifting bracket 34a to the friction pad 361 so that the friction pad 361 and the first lifting bracket 34a remain in contact.

[0190] In some embodiments, the elastic element 362 is a disc spring assembly, which includes multiple disc spring plates arranged in the X-axis direction. Each disc spring plate has a second mounting hole 3621, through which it is fitted onto the fixed shaft 33. Exemplarily, the second mounting hole 3621 is a circular hole. When the fixed shaft 33 rotates, the elastic element 362 does not rotate with the fixed shaft 33. It is understood that in other embodiments, the elastic element 362 may also be a spring, torsion spring, etc.

[0191] The adjusting nut 363 is threaded onto the mating section 332 and is located on the side of the elastic member 362 opposite to the friction pad 361. By rotating the adjusting nut 363, the elastic member 362 can be compressed, thereby applying a force towards the first lifting bracket 34a to the friction pad 361 through the elastic member 362. Furthermore, by rotating the adjusting nut 363, the preload of the elastic member 362 can be adjusted, thereby adjusting the magnitude of the initial rotational damping provided by the rotating shaft mechanism 3, thus meeting the needs of different damping scenarios and having a wide range of applications.

[0192] Furthermore, the damping structure 36 also includes a stop washer 364. The stop washer 364 is sleeved on the mating section 332 of the fixed shaft 33 and can rotate synchronously with the fixed shaft 33. The stop washer 364 is movable relative to the fixed shaft 33 in the X-axis direction. The stop washer 364 is located between the adjusting nut 363 and the elastic member 362.

[0193] The two opposing surfaces of the stop washer 364 contact and abut against the adjusting nut 363 and the elastic element 362, respectively. (See also...) Figure 17 The stop washer 364 is sheet-shaped. The stop washer 364 has a third mounting hole 3641. The third mounting hole 3641 is non-circular. The shape of the third mounting hole 3641 matches the shape of the mating section 332. Thus, when the fixed shaft 33 rotates relative to the lifting bracket 34, it drives the stop washer 364 and the adjusting nut 363 to rotate together. In this embodiment, by setting the stop washer 364, the adjusting nut 363 can be prevented from loosening, improving the connection stability between the adjusting nut 363 and the fixed shaft 33, thereby improving the structural stability of the rotating shaft mechanism 3.

[0194] Optionally, the structure of the stop washer 364 is the same as that of the friction pad 361. This simplifies the structure of the rotating shaft mechanism 3.

[0195] It is worth understanding that in some other embodiments, the limiting part 333 may not be provided on the fixed shaft 33, but instead the damping structure 36 may be symmetrically provided on both sides of the lifting bracket 34 and the drive gear 32 in the X-axis direction.

[0196] Please return to the reference. Figure 13 The protective cover 37 is fixedly connected to the lifting bracket 34. The protective cover 37 and the base 31 cooperate to form a protective space. The fixed shaft 33, the drive gear 32, the driven gear 35, the lifting bracket 34, and the aforementioned damping structure 36 are all located within the protective space. In this way, on the one hand, the fixed shaft 33, the drive gear 32, the driven gear 35, and the aforementioned damping structure can be protected; on the other hand, the protective cover 37 can be used to cover the opening A21, thereby providing dust and water protection, and also improving the aesthetic appearance of the foldable device 100.

[0197] To prevent the protective cover 37 from interfering with the connection between the fixed shaft 33 and the protrusion 131, the protective cover 37 has a clearance opening 371 at one end adjacent to the protrusion 131 along the X-axis. One end of the fixed shaft 33 in the X-axis direction extends through the clearance opening 371 to the outside of the protective space and connects with the protrusion 131. That is, the fixing section 331 of the fixed shaft 33 passes through the clearance opening 371.

[0198] It is understandable that the size of the clearance opening 371 is larger than the size of the portion of the fixed shaft 33 that passes through the clearance opening 371. This facilitates the relative rotation between the fixed shaft 33 and the clearance opening 371, as well as the movement of the protective cover 37 relative to the fixed shaft 33 in the Z direction.

[0199] Please see Figure 18 and Figure 19 , Figure 18 This is a perspective view of the rotating shaft mechanism 3 provided in other embodiments of this application. Figure 19 According to Figure 18 The diagram shows an exploded view of the rotating shaft mechanism 3. This embodiment differs from the previous embodiment in that the structure of the mating component 38 is different. In this embodiment, the rotating shaft mechanism 3 also includes a ball screw 30. The ball screw 30 includes a screw 301 and a nut 302. The screw 301 is the mating component 38.

[0200] The screw 301 extends along the Z-direction. The screw 301 is installed within the mounting space of the base 31. The nut 302 is fitted onto the screw 301 and is movable relative to the screw 301 in the Z-direction. The nut 302 is threadedly engaged with the screw 301.

[0201] A driven gear 35 is provided on the nut 302. The rotation center line o1 of the driven gear 35 extends along the Z direction. The rotation center line o1 of the driven gear 35 is perpendicular to the rotation center line o1 of the drive gear 32. The driven gear 35 meshes with the drive gear 32.

[0202] Specifically, in this example, both the driven gear 35 and the driving gear 32 are bevel gears or helical gears. It is sufficient to ensure that the driven gear 35 is perpendicular to the rotation center line o1 of the driving gear 32.

[0203] 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.

[0204] 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 foldable device, characterized by, The utility model relates to a foldable device, comprising: a first folding body, a second folding body and a hinge mechanism; the first folding body comprises a first part and a second part arranged in a first direction and connected, a side surface of the first part in a second direction is a first surface, and the second part has a boss protruding from the first surface; the second folding body has opposite first and second ends, the first end is rotatably connected to the first folding body through the hinge mechanism to switch the foldable device between an open state and a folded state, a rotation center line of the second folding body and the first folding body extends in a third direction, the third direction, the second direction and the first direction are perpendicular to each other; in the folded state, the second folding body is laminated on the first surface, and the first end is located between the second end and the boss; the hinge mechanism is configured to drive the second folding body to move away from the first folding body along the second direction relative to the first folding body when an external force drives the foldable device to switch from the folded state to the open state; the first folding body comprises a housing, the housing comprises the first part and the second part, the housing has a containing space, a wall plate where the first surface is located has an opening communicating with the containing space, and the hinge mechanism is arranged in the opening; the hinge mechanism comprises a drive gear and a matching part, the drive gear is located outside the containing space, the drive gear is fixed relative to the second folding body, and a rotation center line of the drive gear is the rotation center line of the second folding body and the first folding body; the matching part is a rack, the rack is located in the containing space, the rack is fixed relative to the first folding body, and extends along the second direction; the hinge mechanism further comprises a fixed shaft; the first end has an avoiding gap and a protruding part, the protruding part protrudes away from the second end relative to the avoiding gap, the fixed shaft is located in the avoiding gap, one end of the fixed shaft in the third direction is fixed to a wall surface of the protruding part facing the avoiding gap; and the drive gear is fixed to the fixed shaft; the hinge mechanism further comprises an even number of meshing driven gears, the even number of driven gears are arranged in sequence in the second direction, and the even number of driven gears are located on one side of the drive gear in the second direction; a rotation center line of the driven gear is parallel to the rotation center line of the drive gear, the driven gear closest to the drive gear is meshed with the drive gear, and the driven gear farthest from the drive gear is meshed with the rack; and the even number of driven gears are arranged in the opening as a whole. In the process that the second folding body is driven to rotate synchronously by the fixed shaft, the driving gear drives even number of the driven gears to rotate, so that the driving gear can move in the second direction relative to the rack, to convert the rotation of the second folding body relative to the first folding body into the movement of the second folding body relative to the first folding body in the second direction.

2. A foldable device, characterized by Comprise: A first folding body, a second folding body and a hinge mechanism; The first folding body comprises a first part and a second part arranged in a first direction and connected, a side surface of the first part in a second direction is a first surface, and the second part has a boss protruding from the first surface; The second folding body has opposite first and second ends, the first end is rotatably connected with the first folding body through the hinge mechanism to switch the foldable device between an open state and a folded state, a rotation center line of the second folding body and the first folding body extends along a third direction, the third direction, the second direction and the first direction are perpendicular to each other; in the folded state, the second folding body is laminated on the first surface, and the first end is located between the second end and the boss; The hinge mechanism is configured to drive the second folding body to move away from the first folding body along the second direction relative to the first folding body when an external force drives the foldable device to switch from the folded state to the open state; The first folding body comprises a shell, the shell comprises the first part and the second part, the shell has a containing space, a wall plate where the first surface is located has an opening communicating with the containing space, and the hinge mechanism passes through the opening; The hinge mechanism comprises a driving gear and a matching piece, the driving gear is located outside the containing space, the driving gear is fixed relative to the second folding body, and a rotation center line of the driving gear is the rotation center line of the second folding body and the first folding body; the matching piece is a screw rod, the screw rod is located in the containing space, the screw rod is fixed relative to the first folding body, and extends along the second direction; The hinge mechanism further comprises a fixed shaft; the first end has an avoiding notch and a protruding part, the protruding part protrudes away from the second end relative to the avoiding notch, the fixed shaft is located in the avoiding notch, one end of the fixed shaft in the third direction is fixed to a wall surface of the protruding part facing the avoiding notch; the driving gear is fixed to the fixed shaft; The hinge mechanism further comprises a nut, the nut is sleeved on the screw rod, the nut is provided with a driven gear, the driven gear is engaged with the driving gear, and a rotation center line of the driven gear extends along the second direction; In the process that the second folding body drives the driving gear to rotate synchronously through the fixed shaft, the driving gear drives the nut to rotate on the screw rod and move along the screw rod through the driven gear, so that the driving gear can move relative to the screw rod in the second direction, to convert the rotation of the second folding body relative to the first folding body into the movement of the second folding body relative to the first folding body in the second direction.

3. The foldable device of claim 1 or 2, wherein, The rotating shaft mechanism is configured to drive the second folding body to move along the second direction and close to the first folding body relative to the first folding body when an external force drives the foldable device to switch from the unfolded state to the folded state.

4. The foldable device of claim 1, wherein, The driven gear is two.

5. The foldable device of claim 1 or 4, wherein, The rotating shaft mechanism comprises a lifting support, the lifting support is relatively slidable with the shell in the second direction, and the driven gear is rotatably installed on the lifting support.

6. The foldable device of claim 5, wherein, The lifting support is two, and the two lifting supports are oppositely arranged along a third direction, and the driven gear and the driving gear are located between the two lifting supports.

7. The foldable device of claim 5 or 6, wherein, The rotating shaft mechanism further comprises a base fixed in the accommodating space, and the rack is fixed on the base, and the lifting support is slidably connected with the base in the second direction through a sliding structure.

8. The foldable device of any one of claims 1-7, wherein, One end of the boss close to the first part in the first direction is formed with a avoiding slot, the avoiding slot penetrates through the boss along the second direction, and the protruding part and the fixed shaft are located at the avoiding slot.

9. The foldable device of any one of claims 1-8, wherein, The driving gear has a first shaft hole, the first shaft hole is non-circular, the fixed shaft has a matching section, and the matching section is matched with the first shaft hole.

10. The foldable device of any one of claims 1-9, wherein, The rotating shaft mechanism comprises a base and a lifting support; The base is fixed to the first folding body, the lifting support has a through hole, the fixed shaft passes through the through hole, and the fixed shaft is rotatable relative to the lifting support, and the lifting support is slidably connected with the base in the second direction through a sliding structure.

11. The foldable device of claim 10, wherein, The lifting support is two, and the two lifting supports are oppositely arranged along a third direction, and the driven gear and the driving gear are located between the two lifting supports.

12. The foldable device of claim 10 or 11, wherein, The lifting support has a circular through hole, and the fixed shaft comprises a matching section which passes through the through hole. The outer circumferential surface of the matching section is formed by a circular arc section and a non-circular arc section, the circular arc section and the non-circular arc section are distributed in the circumferential direction of the matching section, the diameter of the circular arc section is equal to the diameter of the through hole, and the non-circular arc section is located on the side of the cylindrical surface of the circular arc section close to the center line of the circular arc section.

13. The foldable device of any of claims 7, 10-12, wherein, The sliding structure comprises a first sliding block and a first sliding groove, one of the first sliding block and the first sliding groove is arranged on the base, the other of the first sliding block and the first sliding groove is arranged on the lifting support, and the first sliding block is slidably connected with the first sliding groove.

14. The foldable device of any one of claims 10-13, wherein, The rotating shaft mechanism further comprises a damping structure for outputting damping force when the fixed shaft rotates.

15. The foldable device of claim 14, wherein, The damping structure is arranged on the fixed shaft, the fixed shaft is provided with a limiting portion, the lifting support and the drive gear are located between the limiting portion and the damping structure, and the damping structure applies an acting force to the lifting support and the drive gear as a whole from the damping structure to the drive gear.

16. The foldable device of claim 14 or 15, wherein, In the third direction, the damping structure is located on a side of the lifting support away from the drive gear; The damping structure comprises: a friction pad, which is sleeved on the fixed shaft and rotates synchronously with the fixed shaft, is movable relative to the fixed shaft in the third direction, and is used for frictionally matching with the lifting support; an elastic member, which is sleeved on the fixed shaft and located on a side of the friction pad away from the lifting support, and is used for applying an acting force to the friction pad towards the lifting support; an adjusting nut, which is in threaded cooperation with the fixed shaft and located on a side of the elastic member away from the friction pad.

17. The foldable device of any one of claims 10-16, wherein, The base has a mounting space, which is open on a side thereof towards the drive gear in the second direction; the lifting support is slidably connected to the mounting space of the base through a sliding structure, and the matching member is located in the mounting space; The rotating shaft mechanism further comprises a protective cover, which is fixedly connected with the lifting support, and the protective cover and the base enclose a protective space, and the fixed shaft, the drive gear and the lifting support are located in the protective space; The protective cover has an avoiding opening, and the one end of the fixed shaft extends to the outside of the protective space through the avoiding opening in the second direction.

18. The foldable device of any one of claims 1-17, wherein, The foldable device is a notebook computer; The first folding body is a keyboard host, the keyboard host comprises a shell, the shell comprises the first part and the second part, and the second folding body is a display.

19. The foldable device of claim 18, wherein, The first part has a first accommodating space, the second part has a second accommodating space, the second accommodating space has a first space region and a second space region arranged in a second direction and connected in communication, the first space region is opposite to and in communication with the first accommodating space in a first direction, and the second space region is formed in the boss; A blowout opening is formed on a wall plate of the second part opposite to the first part; The keyboard host comprises a circuit board, a heat dissipation fan, a heat conducting member and a radiator, the circuit board and the heat dissipation fan are located in the first accommodating space; the heat dissipation fan has a air outlet, and the air outlet is opposite to the blowout opening; The heat conducting member comprises a first heat conducting segment and a second heat conducting segment connected in series, the first heat conducting segment is located in the first accommodating space and is in thermal conduction connection with the circuit board; The second heat conducting segment is located in the second space region; the radiator is located in the first space region and is fixed to the second heat conducting segment, and the radiator is between the blowout opening and the air outlet.

20. The foldable device of claim 18 or 19, wherein, The keyboard host comprises a signal interface, the second part has a thickness greater than that of the first part, the signal interface is located in a second accommodating space of the second part, and the second part has an insertion opening opposite to the signal interface on a wall plate.

21. The foldable device of any one of claims 1-20, wherein, The boss has a second surface facing the same direction as the first surface; The first folding body and the second folding body have a maximum opening angle, and when the included angle between the first folding body and the second folding body is the maximum opening angle, the first end is located on the side facing the plane where the second surface is located.

22. The foldable device of claim 21, wherein, The maximum opening angle ranges from 150° to 180°.

23. The foldable device of any one of claims 1-22, wherein, In the folded state, the distance between the first end and the boss in the first direction ranges from 0 to 1.2 mm.

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