Foldable device and display terminal

Abstract

A foldable device (20) and a display terminal, which relate to the technical field of foldable display, and are used for solving the problem of the complex structure of a mechanism in a foldable display terminal that enables an automatic spring-open function. The foldable device (20) comprises a first housing (11), a second housing (12), a third housing (13), first magnetic attraction members (21), a first hinge mechanism (101), a second hinge mechanism (102), a sliding assembly (30) and second magnetic attraction members (22). The sliding assembly (30) is connected to the first hinge mechanism (101), and the sliding assembly (30) is further slidably connected to the first housing (11) in a first direction (X). The second magnetic attraction members (22) are disposed on the sliding assembly (30), and when the second housing (12) is in a closed state and a flattened-out state, the second magnetic attraction members (22) are located at a first position (A1). When the second housing (12) is in a spring-open state, the second magnetic attraction members (22) are located at a second position (A2), and magnetically repel the first magnetic attraction members (21). Relative to the first position (A1), the second position (A2) is farther from the first hinge mechanism (101). During rotation, the first hinge mechanism (101) can drive the second magnetic attraction members (22) disposed on the sliding assembly (30) to move in the first direction together with the sliding assembly (30).

Description

A folding device, a display terminal

[0001] This application claims priority to Chinese Patent Application No. 202410526757.8, filed with the State Intellectual Property Office of China on April 26, 2024, entitled "A Folding Device and Display Terminal", the entire contents of which are incorporated herein by reference. Technical Field

[0002] This application relates to the field of foldable display technology, and more particularly to a foldable device and a display terminal. Background Technology

[0003] With the continuous development of display technology, foldable display terminals are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable display terminals offer a larger display area, enhancing the viewing experience. When folded, they also boast a smaller size, making them easy for users to carry. Currently, multi-fold display terminals, such as tri-fold terminals, allow the other two folds to automatically unfold when one fold is opened, facilitating the unfolding of the entire display terminal. However, the mechanisms used to achieve this automatic unfolding are complex in size and structure, hindering product structure simplification. Summary of the Invention

[0004] This application provides a folding device and a display terminal to solve the problem of complex structure of the mechanism for realizing the automatic pop-out function in folding display terminals.

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

[0006] One aspect of this application provides a folding device. The folding device may include a first housing, a second housing, a third housing, a first magnetic chuck, a first hinge mechanism, a second hinge mechanism, a sliding assembly, and a second magnetic chuck. Accordingly, the first magnetic chuck is disposed on the second housing. The first hinge mechanism is located between the first housing and the third housing, and the first and third housings are rotatably connected to the first hinge mechanism. The second hinge mechanism is located between the first housing and the second housing, and the first and second housings are rotatably connected to the second hinge mechanism. The sliding assembly is connected to the first hinge mechanism and is also slidably connected to the first housing along a first direction. The first direction is perpendicular to the extension direction of the first hinge mechanism. The second magnetic chuck is disposed on the sliding assembly. When the second housing is in a closed state and a flattened state, the second magnetic chuck is located in a first position. When the second housing is in a spring-open state, the second magnetic chuck is located in a second position and is magnetically repelled by the first magnetic chuck. The second position is farther from the first hinge mechanism than the first position. The angles between the second shell in the closed state, the flattened state, and the spring-open state and the first shell are α1, α2, and α3, respectively; α1 < α3 < α2.

[0007] In summary, when the display terminal is in a closed state, and the user needs to flatten the display terminal to flip the third housing counterclockwise, the first hinge mechanism rotates counterclockwise relative to the first housing. This causes the sliding component to slide along the first direction away from the first hinge mechanism relative to the first housing. In this case, the second magnetic attractor on the sliding component can move along the first direction from a first position close to the first hinge mechanism to a second position away from the first hinge mechanism, following the movement of the sliding component. When the second magnetic attractor is in the second position, it repels the first magnetic attractor magnetically. Under the repulsive force of the first and second magnetic attractors, the second housing with the second magnetic attractor can spring open from the first housing, thus facilitating the user to flatten the second housing. Furthermore, since the first hinge mechanism is connected to the sliding component, the rotation of the first hinge mechanism can cause the second magnetic attractor on the sliding component to move along the first direction with the sliding component. The displacement of the sliding component during the movement of the second magnetic attractor from the first position to the second position is the displacement of the second magnetic attractor. Therefore, in the folding device provided in this application embodiment, the sliding component can directly drive the second magnetic component without the need for additional driving components, thus the structure of the folding device that realizes the pop-out function is simple.

[0008] In one optional embodiment, the sliding assembly includes a slider mechanism and a bracket. The slider mechanism is connected to a first hinge mechanism and is slidably connected to a first housing along a first direction. The end of the bracket facing away from the first hinge mechanism is elastically connected to the first housing. A second magnetic member is disposed on the bracket. Therefore, the bracket can serve as a support component for the second magnetic member. When the second magnetic member is in a first position and a second position, the slider mechanism engages with the bracket. Thus, as the slider mechanism slides along the first direction relative to the first housing away from the first hinge mechanism, it can drive the bracket engaged with the slider mechanism to slide along the first direction relative to the first housing away from the first hinge mechanism. Since the bracket carries the second magnetic member, the second magnetic member can follow the bracket as it slides along the first direction relative to the first housing away from the first hinge mechanism, allowing the second magnetic member to move from the first position to the second position. Furthermore, when the second magnetic member is in the second position on the side facing away from the first position, the slider mechanism disengages from the position engaged with the bracket. Because the end of the bracket facing away from the first hinge mechanism is elastically connected to the first housing... Therefore, when the slider mechanism disengages from the bracket engagement position, the elastic force provided by the part of the bracket that is elastically connected to the first housing can push the bracket and the second magnetic attractor on the bracket to the initial position (i.e., the first position).

[0009] In one optional embodiment, the folding device further includes a guide rod disposed on the first housing along a first direction. Furthermore, the slider mechanism includes a slider body and a latching member. The slider body is connected to a first hinge mechanism, and the slider body slides with the guide rod, allowing the slider body to slide relative to the first housing along the extension direction of the guide rod, i.e., the aforementioned first direction. Additionally, one end of the latching member is hinged to the slider body. When the second magnetic member is in the first and second positions, the other end of the latching member latches with a bracket, thereby fixing the relative positions of the slider mechanism and the bracket. A sliding groove is provided on the first housing, and the groove wall of the sliding groove has a guide surface. The other end of the latching member is located within the sliding groove and slides along the guide surface. Specifically, along the first direction, from the end of the guide surface facing the first hinge mechanism to the end of the guide surface facing away from the first hinge mechanism, the distance between the guide surface and the guide rod gradually decreases in the extension direction of the first hinge mechanism. In this way, during the process of unfolding and folding the device from the closed state, when the end of the latching member away from the slider body slides from the guide surface toward the end of the first hinge mechanism, the distance between the end of the latching member away from the slider body and the slider body gradually decreases, so that the latching member can first latch with the bracket and then disengage from the latching position of the bracket.

[0010] In one optional embodiment, the latching member includes a latch and a guide post. One end of the latch is hinged to the slider body, and the other end of the latch is engaged with the bracket, so that the latching member can be fixed in position relative to the bracket. Furthermore, the guide post is disposed at the other end of the latch, facing one side of the sliding groove, and is located within the sliding groove, sliding along the guide surface. Thus, during the unfolding and folding process from the closed state, the guide post can slide from the end of the guide surface facing the first hinge mechanism to the end of the guide surface facing away from the first hinge mechanism.

[0011] In one optional embodiment, the bracket and the slider body are stacked, with the bracket located on the side of the slider body facing away from the first housing. A slot is provided on the surface of the bracket facing the slider body. The sidewall of the slot has a stepped surface, comprising a first surface, a second surface, and a third surface sequentially away from the first hinge mechanism. The first and third surfaces are arranged along a first direction, and the second surface connects the first and third surfaces, protruding from the first surface. When the second magnetic member is in the first and second positions, the latching member engages with the first and second surfaces. Because the third surface can protrude from the first surface, the first and third surfaces are not on the same horizontal plane, thus creating a corner at the junction of the first and second surfaces. In this case, when the second magnetic member is in the first and second positions, the latching member engages with the first and second surfaces, i.e., the latching member engages at the corner, thereby limiting the latching member through the first and second surfaces with different extending directions, thus fixing the relative positions of the latching member and the bracket. Furthermore, when the second magnetic member is located in the second position on the side opposite to the first position, the snap-fit ​​member contacts the third surface to disengage from the position snapped with the bracket.

[0012] In one optional embodiment, the sliding assembly includes two engaging members, a first engaging member and a second engaging member, which are symmetrically arranged about the slider body. Two sliding grooves, a first sliding groove and a second sliding groove, are formed on the first housing; these grooves are symmetrically arranged about the guide rod. The end of the first engaging member facing away from the slider body is located within the first sliding groove and slides in engagement with it. The end of the second engaging member facing away from the slider body is located within the second sliding groove and slides in engagement with it. In this way, when the second magnetic suction member is in the first and second positions, the first and second engaging members located on both sides of the slider body can be engaged with the bracket, reducing the offset of the slider body within the surface of the first housing and improving the accuracy of the slider body's movement.

[0013] In one optional embodiment, the sliding assembly further includes a first spring. The first spring is located on the side of the bracket away from the first hinge mechanism, with one end connected to the bracket and the other end connected to or abutting against the first housing. This allows for an elastic connection between the bracket and the first housing via the first spring. As the slider body moves the bracket toward the first housing, the first spring is continuously compressed. When the latching member disengages from the bracket's latching position, the compressed first spring, during its elastic recovery, provides a force that can push the bracket and the second magnetic member on the bracket back to their initial position (i.e., the first position).

[0014] In one optional embodiment, the sliding assembly includes two first springs, one on each side of the slider mechanism along the extending direction of the first hinge mechanism. In this case, as the slider mechanism drives the bracket carrying the second magnetic member to slide along the first direction away from the first hinge mechanism, both first springs on both sides of the slider mechanism can be compressed. Thus, when the latching member in the slider mechanism disengages from the bracket, the first springs on both sides of the slider mechanism, during their elastic recovery, apply elastic force to the portions of the bracket located on both sides of the slider mechanism. This results in uniform force distribution on both sides of the bracket, reducing the offset of the bracket within the surface of the first housing, and improving the accuracy of movement of the bracket and the second magnetic member located on the bracket.

[0015] In one optional embodiment, a first receiving groove is formed on the first housing along a first direction, and a first spring is located in one of the first receiving grooves, with the other end of the first spring abutting or connected to the groove wall. The folding device also includes a cover plate, which is fastened to the first receiving groove and connected to the first housing. The cover plate and the first receiving groove enclose a space for accommodating the first spring. In this way, by providing the aforementioned first receiving groove on the first housing, the first spring can be avoided, thereby improving the utilization of the internal layout space of the folding device.

[0016] In one optional embodiment, the sliding assembly further includes a second spring. The second spring is disposed between the slider body and the latching member, with one end connected to the slider body and the other end connected to the latching member. In this way, when compressed, the spring provides elastic force that compresses the latching member, ensuring close contact between the latching member and the first and second surfaces at corners, thereby improving the stability of the latching member's engagement with the bracket.

[0017] In one optional embodiment, a second receiving groove is provided on the slider body, the second receiving groove being arranged along the extending direction of the first hinge mechanism, and the second spring being located within the second receiving groove. This allows the second spring to be embedded within the second receiving groove, which in turn avoids the second spring, thereby improving the utilization rate of the fabric space in the sliding assembly and facilitating product miniaturization.

[0018] In one optional embodiment, when the second magnetic member is in the second position, the vertical projection of the first magnetic member onto the first housing overlaps with the vertical projection of the second magnetic member onto the first housing. This makes it easier for the second magnetic member in the second position to generate magnetic repulsion with the first magnetic member.

[0019] In one optional embodiment, the magnetic poles of both the first and second magnetic attractors are oriented along a second direction, which is perpendicular to the first direction and the extension direction of the first hinge mechanism. When the second housing is in the spring-open state, the surface of the first magnetic attractor facing the second magnetic attractor has the same magnetism as the surface of the second magnetic attractor facing the first magnetic attractor. Therefore, the second magnetic attractor in the second position can magnetically repel the first magnetic attractor.

[0020] In one optional embodiment, the magnetic poles of both the first and second magnetic attractors are oriented along a first direction. When the second housing is in the spring-open state, the first magnetic attractor is away from the surface of the first hinge mechanism, and the magnetic properties of the second magnetic attractor away from the surface of the first hinge mechanism are the same. Therefore, the second magnetic attractor in the second position can magnetically repel the first magnetic attractor.

[0021] In one optional embodiment, a third receiving groove is formed on the first housing, and the third receiving groove is arranged along a first direction. The folding device also includes a limiting post, one end of which is connected to the bracket, and the other end of which is slidably engaged with the third receiving groove. When the latching member disengages from the latching position of the bracket, the elastic force provided by the elastic connection between the bracket and the first housing will push the bracket and the second magnetic member located on the bracket back to the initial position, i.e., the first position. In this case, in order to limit the position of the bracket, it is necessary to ensure that the bracket can move accurately to the first position.

[0022] In another aspect, this application provides a display terminal that may include a display screen and a folding device as described above. The display screen is connected to a first housing and a second housing in the folding device. This display terminal has the same technical effects as the folding device provided in the foregoing embodiments, and will not be repeated here. Attached Figure Description

[0023] Figure 1 is a schematic diagram of the structure of a display terminal provided in an embodiment of this application;

[0024] Figure 2 is an exploded structural diagram of the display terminal shown in Figure 1;

[0025] Figure 3 is a schematic diagram of a pop-up state of the display terminal provided in an embodiment of this application;

[0026] Figure 4 is a schematic diagram of a closed state of the display terminal provided in an embodiment of this application;

[0027] Figure 5 is a schematic diagram of a folded state of the display terminal provided in an embodiment of this application;

[0028] Figure 6 is a schematic diagram of an exploded structure of the folding device shown in Figure 2;

[0029] Figure 7 is a partial schematic diagram of the folding device shown in Figure 2;

[0030] Figure 8 is a cross-sectional view obtained by cutting along the dashed line O1-O2 in Figure 7;

[0031] Figure 9 is a cross-sectional view obtained by cutting along the dashed line O3-O4 in Figure 4;

[0032] Figure 10 is a cross-sectional view obtained by cutting along the dashed line O5-O6 in Figure 3;

[0033] Figure 11 is a dynamic folding diagram of a folding device provided in an embodiment of this application;

[0034] Figure 12 is an exploded structural diagram of a sliding component provided in an embodiment of this application;

[0035] Figure 13 is a schematic diagram of another exploded structure of the folding device shown in Figure 2;

[0036] Figure 14 is a bottom view obtained along the Z direction in Figure 12;

[0037] Figure 15 is an enlarged exploded view of point B in Figure 13;

[0038] Figure 16 shows another bottom view obtained along the Z direction in Figure 12;

[0039] Figure 17 is an enlarged view of point C in Figure 15;

[0040] Figure 18 shows another bottom view obtained along the Z direction in Figure 12;

[0041] Figure 19 is another dynamic folding diagram of a folding device provided in an embodiment of this application;

[0042] Figure 20 shows another bottom view obtained along the Z direction in Figure 12;

[0043] Figure 21 is a schematic diagram of another explosive structure of the folding device shown in Figure 2;

[0044] Figure 22 is another partial schematic diagram of the folding device shown in Figure 2;

[0045] Figure 23 is a schematic diagram of another explosive structure of the folding device shown in Figure 2;

[0046] Figure 24 is another partial schematic diagram of the folding device shown in Figure 2;

[0047] Figure 25 is another partial schematic diagram of the folding device shown in Figure 2;

[0048] Figure 26 is another partial schematic diagram of the folding device shown in Figure 2;

[0049] Figure 27 is a schematic diagram of another folding dynamic of a folding device provided in an embodiment of this application;

[0050] Figure 28 is a schematic diagram of the magnetic attraction method of a magnetic attractor provided in an embodiment of this application;

[0051] Figure 29 is a dynamic folding diagram of a folding device provided in an embodiment of this application;

[0052] Figure 30 is a schematic diagram of another magnetic attraction method provided in the embodiment of this application.

[0053] Reference numerals: 01-Display terminal; 10-Display screen; 20-Folding device; 11-First housing; 12-Second housing; 13-Third housing; 101-First hinge mechanism; 102-Second hinge mechanism; 21-First magnetic clasp; 22-Second magnetic clasp; 30-Sliding assembly; 301-Slider mechanism; 302-Bracket; 3011-Slider body; 3012-Snap-fit ​​component; 311-First spring; 312-Second spring; 230-First groove; 30 12a-First snap-fit ​​component; 3012b-Second snap-fit ​​component; 23-Guide rod; 3000-Step surface; S1-First surface; S2-Second surface; S3-Third surface; 3020-Slot; 30110-Second receiving slot; 110-First receiving slot; 24-Cover plate; 25-Threaded connector; 30121-Lock; 30122-Guide post; 120-Sliding groove; 1201-Guide surface; 26-Limiting post; 130-Third receiving slot. Detailed Implementation

[0054] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0055] In the following description, the terms "first," "second," etc., are used for descriptive convenience only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0056] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed mechanical connection, a detachable mechanical connection, or an integral part; or, "connection" may be a direct connection or an indirect connection through an intermediate medium.

[0057] In the embodiments of this application, the terms "vertical" and "parallel" respectively indicate approximately vertical and approximately parallel within a certain error range. This error range can be a range where the deviation angle relative to absolute verticality and absolute parallelism is less than or equal to 5°, 8°, or 10°, respectively, and is not specifically limited here.

[0058] In the embodiments of this application, directional terms such as "up," "down," "left," and "right" may be defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms can be relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0059] In the accompanying drawings of the embodiments of this application, components are represented by guide lines with arrows; parts are represented by guide lines only; openings, holes, and other openings are represented by guide lines with wavy lines at the ends.

[0060] This application provides a display terminal that can be applied to various communication systems or protocols, such as Bluetooth (BT), Global Positioning System (GPS), Global System for Mobile Communication (GSM), Wireless Fidelity (WiFi), Wideband Code Division Multiple Access (WCDMA), Long Term Evolution (LTE), 5G, and other future communication technologies. The display terminal in this application can be a mobile phone, tablet, laptop, smart home device, smart wearable device (e.g., smartwatch, smart bracelet, smart glasses, smart helmet), virtual reality (VR) display terminal, augmented reality (AR) display terminal, etc. The display terminal can also be a handheld device with wireless communication function, a computing device or other processing device connected to a wireless modem, a vehicle-mounted device, a display terminal in a 5G network, or a display terminal in a future public land mobile network (PLMN), etc., and the embodiments of this application are not limited to this.

[0061] In some embodiments, the display terminal may have a display function. In this case, the display terminal may include a display screen and a processor electrically connected to the display screen. The processor may provide display data to the display screen to drive the display screen to display images. For example, the processor may include one or more processing units, such as an application processor (AP), a modem processor, a graphics processing unit (GPU), an image signal processor (ISP), a controller, a video codec, a digital signal processor (DSP), a baseband processor, and / or a neural network processing unit (NPU). Different processing units may be independent devices or integrated into one or more processors.

[0062] In addition, the aforementioned display terminal may also include an external memory interface electrically connected to the processor, internal memory, a universal serial bus (USB) interface, a charging management module, a power management module, a battery, an antenna, a mobile communication module, a wireless communication module, an audio module, a speaker, a receiver, a microphone, a headphone jack, a sensor module, buttons, and a camera. The sensor module may include pressure sensors, gyroscopes, barometric pressure sensors, magnetic sensors, accelerometers, proximity sensors, near-field sensors, fingerprint sensors, temperature sensors, touch sensors, ambient light sensors, and bone conduction sensors.

[0063] For ease of explanation, the following description uses a foldable phone as an example of the display terminal. In this case, as shown in FIG1, the display terminal 01 may include a display screen 10. In some embodiments of this application, the display screen 10 may be a self-emissive display screen, such as an organic light-emitting diode (OLED) display screen, a micro (or mini) light-emitting diode (LED) display screen, or a quantum dot light-emitting diode (QLED) display screen, etc. Alternatively, in other embodiments of this application, the display screen 10 may also be a liquid crystal display (LCD) that requires a backlight.

[0064] Furthermore, during the folding or flattening of the display terminal 01, in order to support the display screen 10, as shown in FIG1, the display terminal 01 may also include a folding device 20. This folding device 20 can be stacked on the back of the display screen 10. In some embodiments of this application, when the display terminal 01 is a tri-fold display terminal, the folding device 20 may include a first housing 11, a second housing 12, and a third housing 13. The first housing 11 may be located between the second housing 12 and the third housing 13. The display screen 10 is connected to the first housing 11, the second housing 12, and the third housing 13.

[0065] For example, any one of the first housing 11, the second housing 12, and the third housing 13 described above may include a middle frame and a rear housing located on the side of the middle frame opposite to the display screen 10. The middle frame and the rear housing may enclose a receiving space for accommodating components such as circuit boards, batteries, cameras, and sensors.

[0066] Furthermore, when the display terminal 01 is in the flattened state as shown in FIG. 1, the included angle α between the first housing 11 and the second housing 12, or the included angle β between the first housing 11 and the third housing 13, can be or is approximately 180°. Alternatively, where a certain angular tolerance is allowed, for example, the aforementioned included angle α or β can also be a value such as 165°, 177°, or 185°. In this case, the surfaces of the first housing 11, the second housing 12, and the third housing 13 facing the display screen 10 can be on or approximately on the same plane. In this case, when the display terminal 01 is in the flattened state as shown in FIG. 1, the first housing 11, the second housing 12, and the third housing 13 are also in the flattened state.

[0067] Therefore, in order to enable the display terminal 01 to be folded, as shown in Figure 2, the folding device 20 may further include a first hinge mechanism 101 and a second hinge mechanism 102. The first hinge mechanism 101 is located between the first housing 11 and the third housing 13, and the first housing 11 and the third housing 13 are rotatably connected to the first hinge mechanism 101. Furthermore, the second hinge mechanism 102 may be located between the first housing 11 and the second housing 12, and the first housing 11 and the second housing 12 may be rotatably connected to the second hinge mechanism 102.

[0068] In this application embodiment, the structure of the first hinge mechanism 101 and the second hinge mechanism 102 is not limited, as long as the first housing 11 and the third housing 13 are rotatably connected to the first hinge mechanism 101 respectively, and the first housing 11 and the second housing 12 are rotatably connected to the second hinge mechanism 102 respectively.

[0069] In this case, when the display terminal 01 is in the flattened state as shown in Figure 1, the user applies an external force to the third housing 13 or the second housing 12, as shown in Figure 3, which can fold the second housing 12 and the third housing 13, so that the second housing 12 is flipped above the first housing 11 through the second hinge mechanism 102 (as shown in Figure 2), and the third housing 13 is flipped above the first housing 11 through the first hinge mechanism 101 (as shown in Figure 2), so that the entire display terminal 01 is in the folded state shown in Figure 3 or Figure 4.

[0070] For example, in some embodiments of this application, the folded state of the display terminal 01 can refer to the angle α between the first housing 11 and the second housing 12, or the angle β between the first housing 11 and the third housing 13, being less than 180°. For example, as shown in Figure 3, the angle α can be 0° < α < 180°; or the angle β can be 0° < β < 180°. Alternatively, as shown in Figure 4, the angle between the first housing 11 and the second housing 12, or the angle between the first housing 11 and the third housing 13, can be 0°. In this case, the folded state of the display terminal 01 can also be called the closed state. Alternatively, where a certain angular tolerance is allowed, the above-mentioned closed state can also be where the angle α or angle β can be a value such as 2° or 5°.

[0071] In this case, when the display terminal 01 is in the closed state as shown in FIG4, the first housing 11, the second housing 12 and the third housing 13 are also in the closed state.

[0072] To illustrate the positional relationships of the components in the display terminal 01, an XYZ coordinate system is established in the accompanying drawings. For example, the XY plane can be parallel to the display surface (the surface used to display images) of the display screen 10 when the display terminal 01 is in the flattened state shown in Figure 1. The Y direction can be parallel to the extension direction of the first hinge mechanism 101 or the second hinge mechanism 102. The Z direction can be the stacking direction of the first housing 11, the second housing 12, and the third housing 13 when the display terminal 01 is in the closed state shown in Figure 4. That is, the Z direction can be the thickness direction of the display terminal 01 or the aforementioned housings. The Y and Z directions are perpendicular. The X direction can be perpendicular to the extension direction of the first hinge mechanism 101 or the second hinge mechanism 102 (i.e., the Y direction), and the X direction is also perpendicular to the thickness direction of the display terminal 01 or the aforementioned housings (i.e., the Z direction). Therefore, the X, Y, and Z directions are mutually perpendicular. For ease of explanation, the X direction will be referred to as the first direction X, the Y direction as the third direction Y, and the Z direction as the second direction Z.

[0073] The above description illustrates the distance arrangement using the example of the first housing 11, the second housing 12, and the third housing 13 being stacked sequentially from bottom to top when the display terminal 01 is in the closed state shown in Figure 4. In other embodiments of this application, when the display terminal 01 is in the closed state shown in Figure 4, the first housing 11, the third housing 13, and the second housing 12 may be stacked sequentially from bottom to top. This application does not limit the stacking method of the above three housings.

[0074] Furthermore, the above example illustrates that the folding device 20 has three sequentially adjacent housings, such as a first housing 11, a second housing 12, and a third housing 13. This application does not limit the number of housings in the folding device 20, as long as it includes at least three sequentially adjacent housings (e.g., a first housing 11, a second housing 12, and a third housing 13). For ease of explanation, the following examples all use the folding device 20 having the aforementioned first housing 11, second housing 12, and third housing 13.

[0075] This application does not limit the position of the display screen 10 when the display terminal 01 is folded. For example, the display terminal 01 can be an inward-folding display terminal, in which case, when the display terminal 01 is folded, the display screen 10 is enclosed by the first housing 11, the second housing 12, and the third housing 13. Alternatively, as another example, the display terminal 01 can be an outward-folding or partially outward-folding display terminal, in which case, when the display terminal 01 is folded, at least one of the first housing 11, the second housing 12, and the third housing 13 is enclosed by the display screen 10, and at least a portion of the display surface of the display screen 10 can serve as the outer side of the display terminal 01.

[0076] Figure 4 illustrates an example of the folding configuration where the second housing 12 is folded between the first housing 11 and the third housing 13 when the display terminal 01 is in the closed state. In this case, the third housing 13, the second housing 12, and the first housing 11 can be folded into a "G" shape. In other embodiments of this application, when the display terminal 01 is in the closed state, the second housing 12 can be folded onto the side of the first housing 11 facing away from the third housing 13. In this case, the third housing 13, the second housing 12, and the first housing 11 can be folded into an "S" shape. This application does not limit the folding form of the third housing 13, the second housing 12, and the first housing 11 in the closed state; for ease of explanation, the following examples all use a "G" shape as an example.

[0077] Furthermore, when the display terminal 01 is in the closed state shown in Figure 4, and it is necessary to flatten the display terminal 01, as shown in Figure 5, the third housing 13 can be flipped counterclockwise along the direction of the arc arrow. Based on this, to facilitate the user in flattening the display terminal 01, the second housing 12 can first be in the closed state shown in Figure 4 (i.e., the angle between the first housing 11 and the second housing 12 can be 0° or approximately 0°). Next, during the flipping of the third housing 13, the second housing 12 can be opened clockwise along the direction of the arc arrow shown in Figure 3, so that the second housing 12 is in the opened state. At this time, as shown in Figure 3, the second housing 12 can have a small angle α with the first housing 11. This makes it easier for the user to hold the upward-curving part of the second housing 12 and flip the second housing 12 clockwise, so that the entire display terminal 01 is in the flattened state shown in Figure 1.

[0078] As described above, the second shell 12 can have a flattened state as shown in Figure 1, a spring-open state as shown in Figure 3, and a closed state as shown in Figure 4 or Figure 5. Both the spring-open and closed states are folded states. To explain these different states of the second shell 12, the included angle α between the second shell 12 and the first shell 11 in these different states is defined below.

[0079] For example, when the second housing 12 is in the closed state shown in Figure 4 or Figure 5, the angle α between the second housing 12 and the first housing 11 is α1. When the second housing 12 is in the flattened state shown in Figure 1 or Figure 2, the angle α between the second housing 12 and the first housing 11 is α2. When the second housing 12 is in the spring-open state shown in Figure 3, the angle α between the second housing 12 and the first housing 11 is α3. Wherein, α1 < α3 < α2. This application does not limit the specific values ​​of the above-mentioned angles α1, α2, and α3, as long as α1 < α3 < α2 is satisfied.

[0080] Furthermore, in order to enable the folding device 20 provided in this application embodiment to allow the second housing 12 to spring open from the first housing 11, in some embodiments of this application, as shown in FIG6, the folding device 20 may further include a first magnetic chuck 21, a second magnetic chuck 22, and a sliding assembly 30. This application does not limit the number of first magnetic chuck 21 and second magnetic chuck 22. The following embodiments are all illustrative examples using two first magnetic chuck 21 and two second magnetic chuck 22. In addition, for example, the first magnetic chuck 21 or the second magnetic chuck 22 may include at least one magnet. When the first magnetic chuck 21 or the second magnetic chuck 22 includes multiple magnets, the multiple magnets may be arranged in an array, and this application does not limit the arrangement of the multiple magnet arrays.

[0081] Based on this, as shown in Figure 7, the first magnetic chuck 21 can be disposed on the second housing 12, and the second magnetic chuck 22 can be disposed on the sliding assembly 30. The sliding assembly 30 can be connected to the first hinge mechanism 101, and the sliding assembly 30 is also slidably connected to the first housing 11 along the first direction X. In this case, when the first hinge mechanism 101 rotates relative to the first housing 11, it can drive the sliding assembly 30 to slide relative to the first housing 11 along the first direction X.

[0082] Based on this, when the second housing 12 is in the flattened state shown in FIG. 7, the second magnetic chuck 22 can be located at the first position A1 as shown in FIG. 8 (a cross-sectional view obtained by cutting along the dotted line O1-O2 in FIG. 7). The distance between the end of the second magnetic chuck 22 at the first position A1 facing the first hinge mechanism 101 and the end of the first housing 11 near the first hinge mechanism 101 can be L1.

[0083] Furthermore, when the second housing 12 is in the closed state as shown in Figure 9 (a cross-sectional view obtained by cutting along the dashed lines O3-O4 in Figure 4), the second magnetic member 22 can be located at the aforementioned first position A1. Similarly, the distance between the end of the second magnetic member 22 located at the first position A1 facing the first hinge mechanism 101 and the end of the first housing 11 facing the first hinge mechanism 101 can be the aforementioned L1.

[0084] When the second housing 12 is in the spring-open state as shown in Figure 10 (a cross-sectional view obtained by cutting along the dashed lines O5-O6 in Figure 3), the second magnetic member 22 moves to the right to the second position A2 along the direction of the black arrow. The distance between the end of the second magnetic member 22 at the second position A2 facing the first hinge mechanism 101 and the end of the first housing 11 near the first hinge mechanism 101 can be L2. The second position A2 is farther from the first hinge mechanism 101 than the first position A1. Therefore, L2 > L1. Furthermore, when the second magnetic member 22 is in the second position A2, it can magnetically repel the first magnetic member 21, causing the second housing 12 to spring open from the first housing 11. The included angle between the second housing 12 and the first housing 11 is α3 as described above.

[0085] In summary, when the display terminal 01 is in the closed state as shown in Figure 9, when the user needs to flatten the display terminal 01 to flip the third housing 13 counterclockwise along the direction of the arc arrow shown in Figure 10, the first hinge mechanism 101 rotates counterclockwise relative to the first housing 11, thereby driving the sliding component 30 to slide away from the first hinge mechanism 101 relative to the first housing 11 along the first direction X (i.e., slide along the direction of the black arrow in Figure 10).

[0086] In this case, the second magnetic chuck 22, as shown in FIG11, provided on the sliding assembly 30, can move along the first direction X from a first position A1 close to the first hinge mechanism 101 to a second position A2 far away from the first hinge mechanism 101. When the second magnetic chuck 22 is in the second position A2, the second magnetic chuck 22 can magnetically repel the first magnetic chuck 21. Thus, under the repulsive force of the first magnetic chuck 21 and the second magnetic chuck 22, the second housing 12 with the second magnetic chuck 22 can spring open from the first housing 11, thus being in a spring-open state. At this time, the included angle between the second housing 12 and the first housing 11 is α3 as described above, which makes it easier for the user to flatten the second housing 12.

[0087] Furthermore, continuing as shown in Figure 10, since the first hinge mechanism 101 is connected to the sliding component 30, during the rotation of the first hinge mechanism 101, it can drive the second magnetic suction member 22 disposed on the sliding component 30 to move along the first direction X together with the sliding component 30. Continuing as shown in Figure 11, during the process of the second magnetic suction member 22 moving from the first position A1 (as shown in Figure 9) to the second position A2, the displacement of the sliding component 30 (as shown in Figure 10) is the displacement ΔL of the second magnetic suction member 22 (i.e., ΔL = L2 - L1). Therefore, in the folding device 20 provided in this embodiment, the sliding component 30 can directly drive the second magnetic suction member 22 without the need for additional driving components, thus the structure of the folding device 20 that realizes the spring-opening function is simple.

[0088] Furthermore, as described above, when the second housing 12 is in the flattened state shown in Figure 7, the second magnetic chuck 22 can be located at the first position A1 as shown in Figure 8 (a cross-sectional view obtained by cutting along the dotted line O1-O2 in Figure 7). When the second housing 12 is in the closed state, the second magnetic chuck 22 can also be located at this first position A1. This first position A1 can be the initial position of the second magnetic chuck 22. In this way, when the second housing 12 changes from the flattened state shown in Figure 7 to the closed state shown in Figure 9, the second magnetic chuck 22 can move from the first position A1 to the second position A2 and then return to the first position A1 as the initial position. This allows the second magnetic chuck 22 to move from the initial position to the second position A2 again during the next unfolding process of the folding device 20, which is beneficial to improving the displacement accuracy of the second magnetic chuck 22.

[0089] The structure of the sliding assembly 30 described above is illustrated below. In some embodiments of this application, as shown in FIG12, the sliding assembly 30 may include a slider mechanism 301 and a bracket 302. The second magnetic attractor 22 may be disposed on the bracket 302, thus the bracket 302 may serve as a support component for the second magnetic attractor 22. Furthermore, the slider mechanism 301 may be connected to the first hinge mechanism 101 shown in FIG13, and the slider mechanism 301 is slidably connected to the first housing 11 along the first direction X.

[0090] For example, the end of the slider mechanism 301 facing the first hinge mechanism 101 can be connected to the first hinge mechanism 101 via a connecting component such as a pin or threaded connector, so that the relative position of the slider mechanism 301 and the first hinge mechanism 101 can be fixed. Alternatively, the slider mechanism 301 and the first hinge mechanism 101 can be manufactured as an integral structural component by injection molding. In this case, when the first hinge mechanism 101 rotates counterclockwise relative to the first housing 11, it can drive the slider mechanism 301 connected to the first hinge mechanism 101 to slide along the first direction X relative to the first housing 11 away from the first hinge mechanism 101.

[0091] Based on this, when the second magnetic member 22 is located at the first position A1 and the second position A2 as shown in Figure 11, as shown in Figure 14 (a bottom view along the Z direction in Figure 12), the slider mechanism 301 can engage with the bracket 302. In this way, as the slider mechanism 301 slides along the first direction X relative to the first housing 11 away from the first hinge mechanism 101, it can drive the bracket 302, which is engaged with the slider mechanism 301, to slide along the first direction X relative to the first housing 11 away from the first hinge mechanism 101. Since the bracket 302 carries the second magnetic member 22, the second magnetic member 22 can follow the bracket 302 as it slides along the first direction X relative to the first housing 11 away from the first hinge mechanism 101, allowing the second magnetic member 22 to move from the first position A1 to the second position A2 as shown in Figure 11.

[0092] In some embodiments of this application, in order for the slider mechanism 301 to slide relative to the first housing 11 when the second magnetic chuck 22 is located at the first position A1 and the second position A2 shown in FIG. 11, the folding device may further include a guide rod 23 as shown in FIG. 15 (an enlarged exploded view of point B in FIG. 13), which is disposed on the first housing 11 along the first direction X. For example, the guide rod 23 can be connected to the first housing 11 by adhesive or threaded connection. Alternatively, as another example, the guide rod 23 and the first housing 11 can be formed as an integral structural component by injection molding.

[0093] Based on this, continuing as shown in Figure 14, the slider mechanism 301 may include a slider body 3011 and a snap-fit ​​member 3012. The slider body 3011 can be connected to the first hinge mechanism 101 (as shown in Figure 13), and the slider body 3011 can slide in engagement with the guide rod 23 (as shown in Figure 15). For example, a first groove 230 may be formed on the surface of the slider body 3011 facing the guide rod 23 (as shown in Figure 15). When the slider body 3011 is disposed on the first housing 11, a portion of the guide rod 23 can be located within the first groove 230, and the guide rod 23 slides in engagement with the first groove 230, thereby allowing the slider body 3011 to slide relative to the first housing 11 along the extending direction of the guide rod 23, i.e., the aforementioned first direction X.

[0094] Furthermore, when the second magnetic member 22 is located at the first position A1 and the second position A2 shown in FIG. 11, continuing as shown in FIG. 14, one end of the latching member 3012, for example, the end facing the slider body 3011, can be hinged to the slider body 3011, and the other end of the latching member 3012, for example, the end facing away from the slider body 3011, can be latched to the bracket 302. Based on this, in order to enable the latching member 3012 to latch with the bracket 302, in some embodiments of this application, the bracket 302 and the slider body 3011 can be stacked, and the bracket 302 can be located on the side of the slider body 3011 facing away from the first housing 11 (as shown in FIG. 15). In addition, as shown in FIG. 16 (another bottom view obtained along the Z direction in FIG. 12), the surface of the bracket 302 facing the slider body 3011 is provided with a slot 3020.

[0095] As shown in Figure 16, the sidewall of the slot 3020 may have a stepped surface 3000. This stepped surface 3000 may include a first surface S1, a second surface S2, and a third surface S3, sequentially located away from the first hinge mechanism 101 (as shown in Figure 13). The first surface S1 and the third surface S3 are disposed along a first direction X, and the second surface S2 connects the first surface S1 and the third surface S3. Furthermore, the third surface S3 may protrude beyond the first surface S1, thereby preventing the first surface S1 and the third surface S3 from being on the same horizontal plane, thus enabling a corner Q to be present at the junction of the first surface S1 and the second surface S2.

[0096] In this case, when the second magnetic suction member 22 is located at the first position A1 and the second position A2 as shown in FIG11, the snap-fit ​​member 3012 snaps onto the first surface S1 and the second surface S2, that is, the snap-fit ​​member 3012 snaps onto the corner Q formed by the first surface S1 and the second surface S2 (as shown in FIG14), thereby limiting the snap-fit ​​member 3012 by the first surface S1 and the second surface S2 with different extension directions, so that the positions of the snap-fit ​​member 3012 and the bracket 302 are relatively fixed.

[0097] As shown in Figure 14, when the slider body 3011 slides along the first direction X relative to the first housing 11 shown in Figure 13, the slider body 3011 can drive the bracket 302, which is engaged with the bracket 3012, to move together along the first direction X. This allows the second magnetic suction member 22 on the bracket 302, as shown in Figure 11, to move from the first position A1 to the second position A2 along the first direction X.

[0098] In some embodiments of this application, continuing as shown in FIG15, the sliding component 30 may include two latching members, which may be a first latching member 3012a and a second latching member 3012b, respectively. The first latching member 3012a and the second latching member 3012b may be symmetrically arranged about the slider body 3011. In this way, when the second magnetic suction member 22 is located at the first position A1 and the second position A2 shown in FIG11, the first latching member 3012a and the second latching member 3012b located on both sides of the slider body 3011 can be latched with the bracket 302, reducing the offset of the slider body 3011 in the XY surface and improving the accuracy of the movement of the slider body 3011.

[0099] In addition, in order to ensure that the first snap-fit ​​member 3012a and the second snap-fit ​​member 3012b can be stably snapped into the bracket 302 during the snap-fit ​​process, the sliding assembly 30 may also include a second spring 312 as shown in FIG15. The second spring 312 may be disposed between the slider body 3011 and the snap-fit ​​member (the first snap-fit ​​member 3012a or the second snap-fit ​​member 3012b).

[0100] Based on this, as shown in Figure 17 (an enlarged view of point C in Figure 15), one end of the second spring 312 can be connected to the slider body 3011, and the other end of the second spring 312 can be connected to the snap-fit ​​member 3012. For example, the other end of the second spring 312 can be connected to the surface of the snap-fit ​​member 3012 facing the slider body 3011 by welding, bonding, or snap-fitting. In this way, the elastic force provided by the second spring 312 in the compressed state can compress the snap-fit ​​member 3012, so that the snap-fit ​​member 3012 is in close contact with the first surface S1 and the second surface S2 at the corner Q in Figure 16, thereby improving the snap-fit ​​stability between the snap-fit ​​member 3012 and the bracket 302.

[0101] Building upon this, as shown in Figure 17, a second receiving groove 30110 can be formed on the slider body 3011. The second receiving groove 30110 is positioned along the extension direction of the first hinge mechanism 101, i.e., in the third direction Y. The second spring 312 can be located within the second receiving groove 30110. In this way, the second spring 312 can be embedded within the second receiving groove 30110, which can avoid the second spring 312, thereby improving the utilization rate of the fabric space in the sliding assembly 30 and facilitating the miniaturization of the product size.

[0102] As shown in Figure 11, when the bracket 302 drives the second magnetic chuck 22 to the second position A2, the repulsive force of the first magnetic chuck 21 and the second magnetic chuck 22 allows the second housing 12 to spring open from the first housing 11. Furthermore, to allow the bracket 302 to drive the second magnetic chuck 22 back to its initial position (i.e., the first position A1) after the second housing 12 springs open from the first housing 11, the end of the bracket 302 facing away from the first hinge mechanism 101 can be elastically connected to the first housing 11. Moreover, when the second magnetic chuck 22 is located at the second position A2 on the side facing away from the first position A1, as shown in Figure 18 (another bottom view along the Z direction in Figure 12), the slider mechanism 301 can disengage from the position where it is engaged with the bracket 302 (i.e., at corner Q).

[0103] For example, in order to make the end of the bracket 302 away from the first hinge mechanism 101 (as shown in Figure 13) elastically connected to the first housing 11, the sliding assembly 30 may further include a first spring 311 as shown in Figure 15. The first spring 311 can be located on the side of the bracket 302 away from the first hinge mechanism 101 (as shown in Figure 13), one end of the first spring 311 can be connected to the bracket 302, and the other end of the first spring 311 can be connected to or abut against the first housing 11. In this way, the elastic connection between the bracket 302 and the first housing 11 can be achieved through the first spring 311. As the slider body 3011 moves the bracket 302 toward the first housing 11, the compression of the first spring 311 gradually increases.

[0104] In this situation, continuing as shown in Figure 18, after the slider mechanism 301 disengages from the position where it is engaged with the bracket 302 (i.e., at corner Q), that is, after the engaging member 3012 of the slider mechanism 301 disengages from the position where it is engaged with the bracket 302 (i.e., at corner Q), the engaging member 3012 of the slider mechanism 301 will first contact the third surface S3 in the side wall of the slot 3020. As can be seen from the above, when the second magnetic attractor 22 is located in the second position A2 shown in Figure 11, the engaging member 3012 of the slider mechanism 301 is engaged at the corner Q of the bracket 302. Under the magnetic repulsion between the second magnetic attractor 22 and the first magnetic attractor 21, the second housing 12 springs open from the first housing 11, and an angle α3 is formed between the second housing 12 and the first housing 11. After the latching member 3012 of the slider mechanism 301 disengages from the latching position of the bracket 302 (i.e., at the corner Q), the user can apply force to the second housing 12 to unfold the second housing 12 until the second housing 12 is in a flat state. Alternatively, when the user does not apply force to the second housing 12, the aforementioned included angle α3 can be maintained between the second housing 12 and the first housing 11.

[0105] Next, as shown in Figure 19, as described above, the end of the bracket 302 facing away from the first hinge mechanism 101 is elastically connected to the first housing 11. For example, the bracket 302 is elastically connected to the first housing 11 via a first spring 311. Therefore, when the latching member 3012 (as shown in Figure 18) disengages from the latching position of the bracket 302, the compressed first spring 311, during its elastic recovery process, provides a force that can push the bracket 302 and the second magnetic member 22 on the bracket 302 to the initial position (i.e., the first position A1) in the direction of the black arrow. At this time, as shown in Figure 20 (another bottom view obtained along the Z direction in Figure 12), a portion of the latching member 3012 of the slider mechanism 301 can extend out of the slot 3020.

[0106] As shown in Figure 19, when the second magnetic member 22 moves from the side opposite to the first position A1 at the second position A2 to the initial position (i.e., the first position A1), as shown in Figure 20, a portion of the latching member 3012 of the slider mechanism 301 can extend out of the slot 3020. In this case, during the process of folding the third housing 13 again, the first hinge mechanism 101 (as shown in Figure 19) can drive the slider body 3011 connected to the first hinge mechanism 101 to slide towards the first hinge mechanism 101, so that the latching member 3012 can once again latch with the bracket 302 at the corner Q shown in Figure 14. This allows the slider mechanism 301 to push the bracket 302 away from the first hinge mechanism 101 again, thereby triggering the second housing 12 to spring open again from the first housing 11 during the process of flattening the folding device 20.

[0107] This application does not limit the number of first springs 311 used to achieve the elastic connection between the bracket 302 and the first housing 11. For example, continuing as shown in FIG20, the above-mentioned sliding assembly 30 may include at least two first springs 311 (in FIG20, four first springs 311 are used as an example). Along the extension direction of the first hinge mechanism, i.e., the third direction Y, at least one first spring 311 may be provided on each side of the slider mechanism 301 (in FIG20, two first springs 311 are provided on one side of the slider mechanism 301 as an example).

[0108] In this situation, as the slider mechanism 301 drives the bracket 302, which carries the second magnetic attractor 22 as shown in Figure 19, to slide along the first direction X, away from the direction of the first hinge mechanism 101, the first springs 311 on both sides of the slider mechanism 301 shown in Figure 20 can be compressed. Thus, when the latching member 3012 in the slider mechanism 301 disengages from the latching position of the bracket 302 (i.e., at corner Q), the first springs 311 on both sides of the slider mechanism 301 apply elastic force to the portions of the bracket 302 located on both sides of the slider mechanism 301 during the elastic recovery process. This results in uniform force distribution on both sides of the bracket 302, reducing the offset of the bracket 302 within the XY surface and improving the accuracy of movement of the bracket 302 and the second magnetic attractor 22 located on the bracket 302.

[0109] Based on this, in order to accommodate the aforementioned first spring 311, as shown in Figure 21, a first receiving groove 110 is provided on the first housing 11 along the first direction X, and one first spring 311 is located in one first receiving groove 110. For example, the other end of the first spring 311, that is, the end of the first spring 311 facing away from the bracket 302, can abut against the groove wall of the first receiving groove 110. For example, the end of the first spring 311 facing away from the bracket 302 can be connected to the groove wall of the first receiving groove 110 by an adhesive bonding process. In this way, by providing the aforementioned first receiving groove 110 on the first housing 11, the first spring 311 can be avoided, improving the utilization rate of the internal space of the folding device 20.

[0110] Furthermore, to prevent the first spring 311 from dislodging from the first receiving groove 110 during compression or elastic recovery, as shown in FIG21, the folding device 20 may also include a cover plate 24, which can be fastened to the first receiving groove 110. As shown in FIG22, the cover plate 24 can be connected to the first housing 11. For example, a threaded connector 25 can pass through the cover plate 24 and be threadedly connected to the first housing 11. In this case, the cover plate 24 and the first receiving groove 110 shown in FIG21 can enclose a space for accommodating the first spring 311 and prevent the first spring 311 from dislodging from the first receiving groove 110.

[0111] Furthermore, as described above, when the user unfolds the folding device 20 from its closed state, causing the second housing 12 in the folding device 20 to spring open from the first housing 11, the slider mechanism 301 shown in FIG. 22 can engage with the bracket 302 (for example, as shown in FIG. 14, the engaging member 3012 in the slider mechanism 301 engages at the corner Q), thereby allowing the slider mechanism 301 to drive the bracket 302 to move along the first direction X toward the direction of compressing the first spring 311. In this way, the second magnetic member 22 can move from the first position A1 shown in FIG. 11 to the second position A2, thereby causing the second housing 12 to spring open from the first housing 11.

[0112] Furthermore, after the second housing 12 is released from the first housing 11, as shown in Figure 18, the snap fastener 3012 needs to disengage from the snap fastener position of the bracket 302, i.e., the corner Q, so that during the elastic recovery process of the first spring 311, as shown in Figure 19, the bracket 302 and the second magnetic suction member 22 located on the bracket 302 are pushed back to the initial position, i.e., the first position A1.

[0113] Based on this, in order to achieve the process of unfolding the folding device 20 from its closed state, the latching member 3012 in the slider mechanism 301 can first latch onto the bracket 302, and then disengage from the latching position of the bracket 302, as shown in Figure 23. A sliding groove 120 can be provided on the first housing 11. The groove wall of the sliding groove 120 has a guide surface 1201. The other end of the latching member 3012, that is, the end opposite to the slider body 3011, can be located in the sliding groove 120, and the end of the latching member 3012 opposite to the slider body 3011 can slide along the guide surface 1201.

[0114] In some embodiments of this application, the snap-fit ​​member 3012 is designed to both snap onto the bracket 302 and slide along the guide surface 1201 of the sliding groove 120 in FIG. 23. Continuing with FIG. 23, the snap-fit ​​member 3012 may include a latch 30121 and a guide post 30122. One end of the latch 30121 may be hinged to the slider body 3011, and the other end of the latch 30121 may snap onto the bracket 302 at the snap-fit ​​position (i.e., point Q shown in FIG. 14). Furthermore, the guide post 30122 may be disposed at the other end of the latch 30121 (i.e., the end facing away from the sliding body 3011). The side of the guide post 30122 facing the sliding groove 120 may be located within the sliding groove 120 and slide along the guide surface 1201.

[0115] For example, the latch 30121 and guide post 30122 can be formed as a single structural component by injection molding. Alternatively, the guide post 30122 can be connected to the latch 30121 by bonding or threaded connection processes.

[0116] Based on this, continuing as shown in Figure 23, along the first direction X, from the end of the guide surface 1201 facing the first hinge mechanism 101 to the end of the guide surface 1201 away from the first hinge mechanism 101, the distance H between the guide surface 1201 and the guide rod 23 gradually decreases in the third direction Y. The technical effects of adopting the above-described arrangement of the guide surface 1201 are explained below.

[0117] As can be seen from the above, when the user unfolds the folding device 20 from the closed state so that the second housing 12 in the folding device 20 springs open from the first housing 11, the snap-fit ​​member 3012 in the slider mechanism 301 shown in FIG14 needs to snap into the corner Q formed by the first surface S1 and the second surface S2.

[0118] At this time, relative to the slider body 3011, the end of the latching member 3012 that latches with the bracket 302 is closer to the corner Q. Therefore, in the third direction Y, the distance between the end of the latching member 3012 away from the slider body 3011 and the slider body 3011 is relatively large. Thus, as shown in Figure 24, when the slider body 3011 begins to slide along the first direction X, away from the first hinge mechanism 101, the guide post 30122 in the latching member 3012 is located at the end of the guide surface 1201 facing the first hinge mechanism 101 (i.e., in the third direction Y, the end where the distance H between the guide surface 1201 and the guide rod 23 is larger). This allows the guide post 30122 to be positioned further away from the slider body 3011 in the third direction Y, making it easier for the end of the latch 30121 with the guide post 30122 to latch with the bracket 302.

[0119] Furthermore, after the second housing 12 springs apart from the first housing 11, as shown in Figure 18, the latching member 3012 needs to disengage from the latching position of the bracket 302, i.e., at the corner Q. Therefore, in the third direction Y, the distance between the end of the latching member 3012 away from the slider body 3011 and the slider body 3011 is relatively small. Thus, as shown in Figure 25, when the slider body 3011 continues to slide along the first direction X, away from the first hinge mechanism 101, the guide post 30122 in the latching member 3012 is located at the end of the guide surface 1201 away from the first hinge mechanism 101 (i.e., in the third direction Y, the end where the distance H between the guide surface 1201 and the guide rod 23 is smaller). This allows the guide post 30122 to be positioned closer to the slider body 3011 in the third direction Y, thereby enabling the end of the latch 30121 with the guide post 30122 to disengage from the latching position of the bracket 302.

[0120] In this way, during the process of unfolding the closed-state folding device 20, as the guide post 30122 slides from the guide surface 1201 toward one end of the first hinge mechanism 101 to the guide surface 1201 away from one end of the first hinge mechanism 101, the distance between the end of the latch 30121 where the guide post 30122 is located and the slider body 3011 gradually decreases, thereby enabling the snap-fit ​​member 3012 to snap into the bracket 302 first, and then disengage from the snap-fit ​​position of the bracket 302.

[0121] Furthermore, when the latching member 3012 disengages from the latching position of the bracket 302, as shown in FIG26, during the elastic recovery process of the first spring 311, the bracket 302 and the second magnetic member 22 located on the bracket 302 will be pushed back to the initial position, i.e., the first position A1. In this case, in order to limit the position of the bracket 302 and ensure that the bracket 302 can move accurately to the first position A1, as shown in FIG25, a third receiving groove 130 is provided on the first housing 11, which can be set along the first direction X. In addition, as shown in FIG26, the folding device 20 may also include a limiting post 26. For example, the limiting post 26 can be set on the side of the bracket 302 facing the slider mechanism 301, one end of the limiting post 26 is connected to the bracket 302, and the other end of the limiting post 26 can slide and engage with the third receiving groove 130 (as shown in FIG25).

[0122] As described above, during the movement of the slider body 3011 towards the first housing 11, the compression of the first spring 311 gradually increases. By controlling the compression of the first spring 311, when the latching member 3012 disengages from the latching position of the bracket 302, the compressed first spring 311, during its elastic recovery, provides a force that can push the bracket 302 and the second magnetic member 22 located on the bracket 302 back to the first position A1. Furthermore, since the limiting post 26 connected to the bracket 302, as shown in Figure 26, slides in conjunction with the third receiving groove 130 (as shown in Figure 25), when the bracket 302 drives the second magnetic member 22 back to the first position A1, the limiting post 26 can abut against the groove wall of the third receiving groove 130, thereby limiting the second magnetic member 22 and ensuring that the bracket 302 can accurately move to the first position A1.

[0123] For example, in order to control the compression of the first spring 311, when the second magnetic member 22 is in the first position A1 (as shown in Figure 19), the first spring 311 in the initial state can be in a pre-compressed state so that the first spring 311 has a certain amount of pre-compression, thereby ensuring that the compressed first spring 311 has enough elastic force during the elastic recovery process so that the second magnetic member 22 can return to the first position A1.

[0124] Furthermore, as described above, as shown in Figure 27, during the process of the user unfolding the folding device 20 from its closed state, when the second magnetic chuck 22 moves from the first position A1 to the second position A2, the second magnetic chuck 22 can magnetically repel the first magnetic chuck 21, thereby allowing the second housing 12, on which the first magnetic chuck 21 is located, to spring open from the first housing 11. Therefore, in order to make it easier for the second magnetic chuck 22 located at the second position A2 to generate a magnetic repulsion with the first magnetic chuck 21, when the second magnetic chuck 22 is located at the second position A2, the vertical projection of the first magnetic chuck 21 on the first housing 11 can overlap with the vertical projection of the second magnetic chuck 22 on the first housing 11.

[0125] For example, the vertical projection of the second magnetic member 22 located at the second position A2 onto the first housing 11 can completely overlap with the vertical projection of the first magnetic member 21 onto the first housing 11. Alternatively, the vertical projection of the second magnetic member 22 located at the second position A2 onto the first housing 11 can partially overlap with the vertical projection of the first magnetic member 21 onto the first housing 11; this application does not limit this.

[0126] Based on this, in order to enable the second magnetic attractor 22 located at the second position A2 to generate a magnetic repulsion effect with the first magnetic attractor 21, in some embodiments of this application, as shown in FIG27, the magnetic pole directions of both the first magnetic attractor 21 and the second magnetic attractor 22 are along the second direction Z. Here, "the magnetic pole directions of both the first magnetic attractor 21 and the second magnetic attractor 22 are along the second direction Z" can mean that the direction from the S pole of the first magnetic attractor 21 to the N pole of the second magnetic attractor 22, or the direction from the N pole to the S pole, is parallel to the second direction Z.

[0127] Furthermore, when the second housing 12 is in the spring-open state as shown in FIG. 27, the surface of the first magnetic member 21 facing the second magnetic member 22 has the same magnetism as the surface of the second magnetic member 22 facing the first magnetic member 21. For example, as shown in FIG. 28, along the second direction Z, the upper surface of the second magnetic member 22 can be an S pole and the lower surface can be an N pole. The lower surface of the first magnetic member 21 can be an S pole and the upper surface can be an N pole. Thus, continuing as shown in FIG. 27, since the surface of the second magnetic member 22 at the second position A2 facing the first magnetic member 21 and the surface of the first magnetic member 21 facing the second magnetic member 22 at the second position A2 both have the S pole polarity and the same magnetism, the second magnetic member 22 at the second position A2 can magnetically repel the first magnetic member 21.

[0128] Alternatively, as another example, along the second direction Z, the upper surface of the second magnetic attractor 22 can be the N pole, and the lower surface can be the S pole. The lower surface of the first magnetic attractor 21 can be the N pole, and the upper surface can be the S pole. The technical effect of magnetic repulsion between the second magnetic attractor 22 and the first magnetic attractor 21 located at the second position A2 is the same as described above, and will not be repeated here.

[0129] Furthermore, in some embodiments of this application, continuing as shown in FIG27, when the folding device 20 is in the closed state, the vertical projection of the second magnetic member 22 located at the first position A1 on the first housing 11 may not overlap with the vertical projection of the first magnetic member 21 on the first housing 11. At this time, there may be no magnetic attraction between the second magnetic member 22 and the first magnetic member 21.

[0130] Alternatively, in order to enable the second magnetic attractor 22 located at the second position A2 to generate a magnetic repulsion with the first magnetic attractor 21, in some embodiments of this application, as shown in FIG29, the magnetic pole directions of both the first magnetic attractor 21 and the second magnetic attractor 22 are along the first direction X. Here, "the magnetic pole directions of both the first magnetic attractor 21 and the second magnetic attractor 22 are along the first direction X" can mean that the direction from the S pole of the first magnetic attractor 21 to the N pole of the second magnetic attractor 22, or the direction from the N pole to the S pole, is parallel to the first direction X.

[0131] Furthermore, when the second housing 12 is in the spring-open state shown in FIG. 29, the first magnetic member 21 has the same magnetism as the surface of the first hinge mechanism 101 facing away from it, and the second magnetic member 22 has the same magnetism as the surface of the first magnetic member 21 facing away from it. For example, along the first direction X, the surfaces of the first magnetic member 21 and the second magnetic member 22 facing away from the first hinge mechanism 101 are N poles, and the surfaces of the first magnetic member 21 and the second magnetic member 22 facing away from the first hinge mechanism 101 are S poles. In this way, since the surfaces of the first magnetic member 21 facing away from the first hinge mechanism 101 and the second magnetic member 22 facing away from the first hinge mechanism 101 are both N poles and have the same magnetism, the second magnetic member 22 located at the second position A2 can magnetically repel the first magnetic member 21.

[0132] Alternatively, as another example, along the first direction X, the surfaces of the first magnetic member 21 and the second magnetic member 22 facing away from the first hinge mechanism 101 are the S poles, and the surfaces of the first magnetic member 21 and the second magnetic member 22 facing the first hinge mechanism 101 are the N poles. The technical effect of the magnetic repulsion between the second magnetic member 22 and the first magnetic member 21 at the second position A2 is the same as described above, and will not be repeated here.

[0133] Furthermore, in some embodiments of this application, continuing as shown in FIG29, when the folding device 20 is in the closed state, the vertical projection of the second magnetic member 22 located at the first position A1 onto the first housing 11 does not overlap with the vertical projection of the first magnetic member 21 onto the first housing 11. At this time, as shown in FIG30, along the first direction X, since the polarity of the left side of the first magnetic member 21 is S and the polarity of the right side of the second magnetic member 22 is N, with opposite polarities, the second magnetic member 22 and the first magnetic member 21 can attract each other.

[0134] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any changes or substitutions within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A folding device (20), characterized in that, include: First shell (11); Second shell (12); Third shell (13); The first magnetic suction element (21) is disposed on the second housing (12); A first hinge mechanism (101) is located between the first housing (11) and the third housing (13), and the first housing (11) and the third housing (13) are respectively rotatably connected to the first hinge mechanism (101); The second hinge mechanism (102) is located between the first housing (11) and the second housing (12), and the first housing (11) and the second housing (12) are rotatably connected to the second hinge mechanism (102); A sliding component (30) is connected to a first hinge mechanism (101), and the sliding component (30) is also slidably connected to a first housing (11) along a first direction (X); the first direction (X) is perpendicular to the extension direction of the first hinge mechanism (101); A second magnetic chuck (22) is disposed on the sliding assembly (30); when the second housing (12) is in the closed state and the flattened state, the second magnetic chuck (22) is located in the first position (A1); when the second housing (12) is in the spring-open state, the second magnetic chuck (22) is located in the second position (A2) and is magnetically repelled by the first magnetic chuck (21); relative to the first position (A1), the second position (A2) is away from the first hinge mechanism (101); The angles between the second shell (12) in the closed state, the flattened state and the spring-open state and the first shell (11) are α1, α2 and α3 respectively; α1 < α3 < α2.

2. The folding device (20) according to claim 1, characterized in that, The sliding component (30) includes: The slider mechanism (301) is connected to the first hinge mechanism (101) and is slidably connected to the first housing (11) along the first direction (X); A bracket (302) is provided, the end of which is elastically connected to the first housing (11) away from the first hinge mechanism (101); a second magnetic member (22) is provided on the bracket (302); When the second magnetic suction member (22) is located at the first position (A1) and the second position (A2), the slider mechanism (301) engages with the bracket (302); when the second magnetic suction member (22) is located at the second position (A2) on the side away from the first position (A1), the slider mechanism (301) disengages from the position engaged with the bracket (302).

3. The folding device (20) according to claim 2, characterized in that, The folding device (20) further includes a guide rod (23), which is disposed on the first housing (11) along the first direction (X); The slider mechanism (301) includes: The slider body (3011) is connected to the first hinge mechanism (101), and the slider body (3011) is slidably engaged with the guide rod (23); A snap-fit ​​member (3012) is provided, one end of which is hinged to the slider body (3011); when the second magnetic suction member (22) is located in the first position (A1) and the second position (A2), the other end of the snap-fit ​​member (3012) is snapped to the bracket (302); a sliding groove (120) is provided on the first housing (11), and the groove wall of the sliding groove (120) has a guide surface (1201); the other end of the snap-fit ​​member (3012) is located in the sliding groove (120) and slides along the guide surface (1201); Along the first direction (X), from the end of the guide surface (1201) facing the first hinge mechanism (101) to the end of the guide surface (1201) away from the first hinge mechanism (101), the distance between the guide surface (1201) and the guide rod (23) gradually decreases in the extending direction of the first hinge mechanism (101).

4. The folding device (20) according to claim 3, characterized in that, The connector (3012) includes: A latch (30121) is provided, one end of which is hinged to the slider body (3011), and the other end of which is engaged with the bracket (302). A guide post (30122) is disposed at the other end of the latch (30121) and faces one side of the sliding groove (120); the guide post (30122) is located in the sliding groove (120) and slides along the guide surface (1201).

5. The folding device (20) according to claim 3 or 4, characterized in that, The bracket (302) is stacked with the slider body (3011), and the bracket (302) is located on the side of the slider body (3011) away from the first housing (11); The bracket (302) has a slot (3020) on its surface facing the slider body (3011); the sidewall of the slot (3020) has a stepped surface (3000); the stepped surface (3000) includes a first surface (S1), a second surface (S2), and a third surface (S3) sequentially away from the first hinge mechanism (101); the first surface (S1) and the third surface (S3) are arranged along the first direction (X), the second surface (S2) connects the first surface (S1) and the third surface (S3); the third surface (S3) protrudes from the first surface (S1); When the second magnetic suction member (22) is located at the first position (A1) and the second position (A2), the snap-fit ​​member (3012) snaps onto the first surface (S1) and the second surface (S2); when the second magnetic suction member (22) is located at the second position (A2) on the side away from the first position (A1), the snap-fit ​​member (3012) contacts the third surface (S3) to disengage from the position snapped onto the bracket (302).

6. The folding device (20) according to any one of claims 3-5, characterized in that, The sliding component (30) includes two latching members (3012), namely a first latching member (3012a) and a second latching member (3012b); the first latching member (3012a) and the second latching member (3012b) are symmetrically arranged about the slider body (3011); The first housing (11) has two sliding grooves (120), namely a first sliding groove (120) and a second sliding groove (120); the first sliding groove (120) and the second sliding groove (120) are symmetrically arranged about the guide rod (23); Wherein, the end of the first snap-fit ​​member (3012a) facing away from the slider body (3011) is located in the first sliding groove (120) and is slidably engaged with the first sliding groove (120); the end of the second snap-fit ​​member (3012b) facing away from the slider body (3011) is located in the second sliding groove (120) and is slidably engaged with the second sliding groove (120).

7. The folding device (20) according to any one of claims 2-6, characterized in that, The sliding component (30) further includes: The first spring (311) is located on the side of the bracket (302) away from the first hinge mechanism (101). One end of the first spring (311) is connected to the bracket (302), and the other end of the first spring (311) is connected to or abuts against the first housing (11).

8. The folding device (20) according to claim 7, characterized in that, The sliding assembly (30) includes two first springs (311), and one first spring (311) is provided on each side of the slider mechanism (301) along the extending direction of the first hinge mechanism (101).

9. The folding device (20) according to claim 7 or 8, characterized in that, The first housing (11) has a first receiving groove (110) arranged along the first direction (X), and a first spring (311) is located in a first receiving groove (110). The other end of the first spring (311) abuts or connects with the groove wall of the first receiving groove (110). The folding device (20) also includes a cover plate, which is fastened to the first receiving groove (110) and connected to the first housing (11). The cover plate and the first receiving groove (110) enclose a space for accommodating the first spring (311).

10. The folding device (20) according to any one of claims 3-9, characterized in that, The sliding component (30) further includes: A second spring (312) is disposed between the slider body (3011) and the snap-fit ​​member (3012). One end of the second spring (312) is connected to the slider body (3011), and the other end is connected to the snap-fit ​​member (3012).

11. The folding device (20) according to claim 10, characterized in that, The slider body (3011) is provided with a second receiving groove (30110), the second receiving groove (30110) is arranged along the extension direction of the first hinge mechanism (101), and the second spring (312) is located in the second receiving groove (30110).

12. The folding device (20) according to any one of claims 1-11, characterized in that, When the second magnetic member (22) is in the second position (A2), the vertical projection of the first magnetic member (21) on the first housing (11) overlaps with the vertical projection of the second magnetic member (22) on the first housing (11).

13. The folding device (20) according to claim 12, characterized in that, The magnetic poles of the first magnetic attractor (21) and the second magnetic attractor (22) are both along the second direction (Z), which is perpendicular to the first direction (X) and the extension direction of the first hinge mechanism (101). When the second housing (12) is in the spring-open state, the surface of the first magnetic member (21) facing the second magnetic member (22) has the same magnetism as the surface of the second magnetic member (22) facing the first magnetic member (21).

14. The folding device (20) according to claim 12, characterized in that, The magnetic poles of the first magnetic attractor (21) and the second magnetic attractor (22) are both along the first direction (X); When the second housing (12) is in the spring-open state, the first magnetic attractor (21) is away from the surface of the first hinge mechanism (101), and the second magnetic attractor (22) is away from the surface of the first hinge mechanism (101) with the same magnetism.

15. The folding device (20) according to any one of claims 2-14, characterized in that, The first housing (11) is provided with a third receiving groove (130), which is arranged along the first direction (X); The folding device (20) further includes a limiting post (26), one end of which is connected to the bracket (302), and the other end of which is slidably engaged with the third receiving groove (130).

16. A display terminal, characterized in that, include: Display screen (10); And a folding device (20) as described in any one of claims 1-15; the display screen (10) is connected to a first housing (11) and a second housing (12) in the folding device (20).

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