A rotating mechanism, a support device, and an electronic device

Abstract

The application provides a rotating mechanism, a supporting device and an electronic device, relates to the technical field of electronic devices, and can increase the R angle of a folding screen, prolong the service life of the folding screen, and has a simple structure. The rotating mechanism comprises a base, a first door plate, a first connecting piece and a first swing arm. The first door plate is hinged to the base, the first connecting piece is hinged to the first door plate, and the first connecting piece is used for fixing a first shell. The base is also used for connecting a second shell. The base, the first door plate, the first shell and the second shell all have a fitting surface, and the fitting surface is used for fitting the folding screen. A first guide sliding groove is arranged on the first door plate; a second guide sliding groove is arranged on the first connecting piece. One end of the first swing arm is hinged to the base, the other end of the first swing arm is provided with a first sliding piece, and the first sliding piece is slidably connected in the first guide sliding groove and the second guide sliding groove. The rotating mechanism provided in the application is used for supporting the bending part of the folding screen.

Description

[0001] This patent application is a divisional application. The original application number is 202110587689.2, the application date is May 27, 2021, and the title is: A rotating mechanism, a support device and an electronic device. Technical Field

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

[0003] With the development of foldable screen technology, foldable phones have become a hot topic. Current folding methods are divided into inward folding and outward folding, meaning the screen folds to the inside or outside of the screen. The problem with outward folding is that the screen is exposed and easily scratched by hard objects.

[0004] Currently, the folding mechanisms used to achieve inward folding of foldable screens are complex in structure and have too many parts. They achieve large inward folding angles (i.e., R-angles) through complex rotation mechanisms to protect the foldable screen from damage. However, the complexity of the mechanisms and components makes the folding process unstable and prone to errors. Summary of the Invention

[0005] The embodiments of this application provide a rotating mechanism, a support device, and an electronic device that can fold the folding area of ​​a foldable screen into a teardrop shape when it is in a folded state, increase the folding radius (R-angle), and extend the service life of the foldable screen.

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

[0007] In a first aspect, some embodiments of this application provide a rotating mechanism, which includes a base, a first door panel, a first connecting member, and a first swing arm. The first door panel is hinged to the base, and the first connecting member is hinged to the first door panel. The first connecting member is used to fix to a first housing. A first guide groove is provided on the first door panel. A second guide groove is provided on the first connecting member. One end of the first swing arm is hinged to the base, and the other end of the first swing arm is provided with a first sliding member, which is slidably connected in the first guide groove and the second guide groove. The base, the first door panel, and the first housing all have a contact surface for contacting a folding screen. The first connecting member is rotatable relative to the base between an unfolded position and a folded position. When the first connecting member is in the unfolded position, the contact surfaces of the base, the first door panel, and the first housing are coplanar and face the same direction. When the first connector is in the folded position, the angle between the mating surface of the base and the mating surface of the first door panel on the side used to mate the folded screen is α, where α is less than 90°, and the angle between the mating surface of the first door panel and the mating surface of the first housing on the side used to mate the folded screen is β, where β is greater than 180°, and the mating surface of the first housing is perpendicular or approximately perpendicular to the mating surface of the base.

[0008] The support device provided in this embodiment can fold the folding screen portion attached to the bonding surface of the base, the bonding surface of the first door panel, and the bonding surface of the first housing into a teardrop shape, thereby increasing the R-angle of the folding screen in the bending area and thus extending the service life of the folding screen.

[0009] In one possible implementation of the first aspect, α is greater than or equal to 65° and less than or equal to 82°. This ensures that the angle between the mating surface of the base and the mating surface of the first door panel is moderate, increasing the radius (R) of the bending area of ​​the folding screen and effectively extending its lifespan.

[0010] In one possible implementation of the first aspect, the hinge axis between the first door panel and the base is a first hinge axis, located on the side facing the mating surface of the base, and spaced apart from the mating surface of the base. Thus, when the first connector rotates from the unfolded position to the folded position, the base can be lowered to avoid obstructing the folding screen, thereby allowing the folding screen to have a larger inward folding angle and extending its lifespan. When the first connector rotates from the folded position to the unfolded position, the base can be raised so that the mating surface of the base is flush with the mating surfaces of the first door panel and the first housing, ensuring the folding screen remains flat.

[0011] In one possible implementation of the first aspect, the hinge axis between the first connector and the first door panel is a second hinge axis, which coincides with the edge of the first door panel's contact surface near the contact surface of the first housing. Thus, when the first connector moves between the unfolded and folded positions, the relative position between the edge of the first door panel's contact surface near the contact surface of the first housing and the contact surface of the first housing remains fixed, preventing damage to the folding screen and extending its lifespan.

[0012] In one possible implementation of the first aspect, the first guide groove and the second guide groove are located on the side of the first door panel's mating surface away from the folding screen. The orthographic projection of the first guide groove onto the mating surface of the first door panel is the first projection, and the orthographic projection of the second guide groove onto the mating surface of the first door panel is the second projection. The edge of the mating surface of the first door panel near the base is the first edge, and the edge of the mating surface of the first door panel near the first housing is the second edge. The first projection and the second projection are located between the straight lines containing the first edge and the second edge. This results in a simple and compact rotating mechanism. Furthermore, the first and second guide grooves do not interfere with the folding screen.

[0013] In one possible implementation of the first aspect, the first guide groove has two ends, a first end and a second end, which extend from the first end to the second end towards the base. The second guide groove has two ends, a third end and a fourth end, which extend from the third end to the fourth end towards the base. When the first connector rotates from the unfolded position to the folded position, the first slider slides from the first end of the first guide groove and the third end of the second guide groove towards the second end of the first guide groove and the fourth end of the second guide groove. This results in better smoothness when the first connector rotates from the unfolded position to the folded position, and reduces the difficulty of unfolding and folding the electronic device.

[0014] In one possible implementation of the first aspect, the second guide groove extends from the third end to the fourth end in a direction away from the plane where the mating surface of the first housing is located. That is, the vertical distance from different portions of the second guide groove from the third end to the fourth end to the plane where the mating surface of the first housing is located gradually increases. Thus, during the rotation of the first connector from the unfolded position to the folded position, the second guide groove can push the first slider to gradually move away from the folding screen, thereby causing the end of the first door panel near the base to gradually tilt away from the folding screen relative to the end of the first door panel near the first connector. This gradually rotates the device to the folded position. This structure is simple, and the driving force applied to the first housing can be directly transmitted to the first slider to push the first door panel to tilt. Therefore, the folding driving force of the electronic device is strong, and the probability of jamming is low.

[0015] In one possible implementation of the first aspect, the second guide groove is an arc-shaped groove, and the extension path of the second guide groove arches towards the mating surface of the first door panel. Thus, during the rotation of the first connector from the unfolded position to the folded position, the tilt angle of the first door panel can be smoothly controlled by the second guide groove, thereby increasing the folding stability of the electronic device and reducing the probability of jamming.

[0016] In one possible implementation of the first aspect, the first guide groove is an arc-shaped groove, and the extension path of the first guide groove arches away from the mating surface of the first door panel. In this way, during the rotation of the first connector from the unfolded position to the folded position, the second guide groove cooperates with the first guide groove to control the change of the tilt angle of the first door panel to be gradual and the force to be stable, thereby further increasing the folding stability of the electronic device and reducing the probability of jamming.

[0017] In one possible implementation of the first aspect, the length range of both the first guide groove and the second guide groove along their own extension paths is [3.5mm, 10mm]. Further optionally, the length range of both the first guide groove and the second guide groove along their own extension paths is [3.5mm, 5mm].

[0018] In one possible implementation of the first aspect, the radius of curvature of the first guide groove and the second guide groove at various positions along their extension paths is in the range of [3mm, 7mm]. Further optionally, the radius of curvature of the first guide groove and the second guide groove at various positions along their extension paths is in the range of [4mm, 5.5mm].

[0019] In one possible implementation of the first aspect, the hinge axis between the first connector and the first door panel is the second hinge axis. When the first connector is in the unfolded position, the angle between the vertical line from the second end of the first guide groove to the second hinge axis and the vertical line from the fourth end of the second guide groove to the second hinge axis is γ, where γ = 90° - α = β - 180°.

[0020] In one possible implementation of the first aspect, the base is provided with a first hinge groove, and a first arc-shaped rib is provided within the first hinge groove. The first door panel is provided with a first hinge block, and the first hinge block is provided with a first arc-shaped elongated groove. The first hinge block is fitted and accommodated within the first hinge groove, and the first arc-shaped rib is fitted and embedded within the first arc-shaped elongated groove. This achieves a hinge connection between the base and the first door panel.

[0021] In one possible implementation of the first aspect, the first door panel is provided with a second hinge block, and the second hinge block is provided with a second arc-shaped elongated groove. The first connector is provided with a second hinge groove, and a second arc-shaped rib is provided within the second hinge groove. The second hinge block is fitted and accommodated within the second hinge groove, and the second arc-shaped rib is fitted and accommodated within the second arc-shaped elongated groove. This achieves the hinge connection between the first connector and the first door panel.

[0022] In one possible implementation of the first aspect, the rotating mechanism further includes a second door panel, a second connecting member, and a second swing arm. The second door panel is hinged to the base, and the second connecting member is hinged to the second door panel for fixing to the second housing. A third guide groove is provided on the second door panel. A fourth guide groove is provided on the second connecting member. One end of the second swing arm is hinged to the base, and the other end of the second swing arm is provided with a second sliding member, which is slidably connected within the third and fourth guide grooves. Both the second door panel and the second housing have mating surfaces for mating the folding screen. The second connecting member is rotatable relative to the base between an unfolded position and a folded position. When the second connecting member is in the unfolded position, the mating surfaces of the base, the second door panel, and the second housing are coplanar and face the same direction. When the second connector is in the folded position, the angle between the mating surface of the base and the mating surface of the second door panel on the side used for mating the folding screen is less than 90°, and the angle between the mating surface of the second door panel and the mating surface of the second housing on the side used for mating the folding screen is greater than 180°. Furthermore, the mating surface of the second housing is perpendicular or nearly perpendicular to the mating surface of the base. Thus, when the support device is in the folded state, the folding screen portion supported on the rotating mechanism (i.e., the third part described below) can be teardrop-shaped, thereby increasing the inward folding angle of the folding screen and extending its service life.

[0023] Secondly, some embodiments of this application provide a support device, which includes a first housing, a second housing, and a rotating mechanism as described in any of the above technical solutions. The rotating mechanism is located between the first housing and the second housing, and a first connecting member of the rotating mechanism is fixed to the first housing. The base of the rotating mechanism is also connected to the second housing.

[0024] Since the support device provided in this application embodiment includes the rotation mechanism as described in any of the above technical solutions, both can solve the same technical problem and achieve the same effect.

[0025] Thirdly, some embodiments of this application provide an electronic device including a foldable screen and a support device as described above. The foldable screen includes a first part, a second part, and a bent part, the bent part being located between the first part and the second part, the first part being supported and fixed to a first housing, the second part being supported and fixed to a second housing, and the bent part being supported on a rotating mechanism of the support device.

[0026] Since the electronic device provided in this application embodiment includes the support device described in the above technical solution, the two can solve the same technical problem and achieve the same effect. Attached Figure Description

[0027] Figure 1Perspective views of electronic devices provided in some embodiments of this application;

[0028] Figure 2 for Figure 1 The diagram shows the structure of the electronic device when the folding screen is in the unfolded state.

[0029] Figure 3 for Figure 1 The diagram shows the structure of the electronic device when the foldable screen is in a folded state.

[0030] Figure 4 for Figure 1 A perspective view of the support device in the electronic device shown.

[0031] Figure 5 for Figure 4 A partially exploded view of the support device shown.

[0032] Figure 6 A schematic diagram of the assembly structure of the first middle frame, the rotating mechanism, and the second middle frame within the support device provided in some embodiments of this application;

[0033] Figure 7 for Figure 6 A schematic diagram of the assembly structure of the first middle frame, base, first door panel, first connector and first swing arm in the assembly structure shown;

[0034] Figure 8 for Figure 7 Exploded view of the assembly structure shown;

[0035] Figure 9 for Figure 7 A schematic diagram of the base in the assembly structure shown;

[0036] Figure 10 for Figure 7 A structural schematic diagram of the first door panel in the assembly structure shown;

[0037] Figure 11 for Figure 10 A structural schematic diagram of the first door panel shown from another perspective;

[0038] Figure 12 for Figure 7 Assembly drawing of the first middle frame and the first connecting piece in the assembly structure shown;

[0039] Figure 13 for Figure 12 A magnified view of region I in the assembly drawing shown;

[0040] Figure 14 for Figure 7 The sectional view of the assembly structure shown at line AA;

[0041] Figure 15 for Figure 14 The diagram shown is a structural schematic of the first connector in the unfolded position.

[0042] Figure 16 for Figure 14 The diagram shown is a structural schematic of the first connector in the folded position.

[0043] Figure 17 for Figure 7 A schematic diagram of the first swing arm in the assembly structure shown;

[0044] Figure 18 for Figure 7 A schematic diagram of the assembly structure shown from another perspective;

[0045] Figure 19 for Figure 18 A magnified view of a portion of region II;

[0046] Figure 20 This is a schematic diagram showing the relative positions of the first sliding member, the first guide groove, the second guide groove, the mating surface of the base, the mating surface of the first door panel, and the mating surface of the first middle frame when the first connecting member is in the unfolded position.

[0047] Figure 21 This is a schematic diagram showing the relative positions of the first slider, the first guide groove, the second guide groove, the mating surface of the base, the mating surface of the first door panel, and the mating surface of the first middle frame when the first connector is in the folded position.

[0048] Figure 22 This diagram shows the relationship between the first guide groove, the second guide groove, and the second hinge axis when the first connector is in the unfolded position.

[0049] Figure 23 for Figure 6 The assembly structure shown is a schematic diagram of the folding screen in its unfolded state.

[0050] Figure 24 for Figure 6 The assembly structure shown is a schematic diagram of the foldable screen in the folded state. Detailed Implementation

[0051] In the embodiments of this application, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," "third," and "fourth" may explicitly or implicitly include one or more of that feature.

[0052] In 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 limitation, 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.

[0053] This application provides an electronic device, which is a type of electronic device with a foldable screen. Specifically, the electronic device includes, but is not limited to, mobile phones, tablet computers, laptop computers, personal digital assistants (PDAs), personal computers, notebook computers, in-vehicle devices, and wearable devices (such as watches).

[0054] Please see Figure 1 , Figure 1 This is a perspective view of an electronic device 100 provided in some embodiments of this application. In this embodiment, the electronic device 100 is a foldable screen phone. The electronic device 100 includes a foldable screen 10 and a supporting device 20. It is understood that... Figure 1 The electronic device 100 is shown only schematically, and the actual shape, size, location, and construction of these components are not subject to change. Figure 1 Restrictions.

[0055] The foldable screen 10 is used to display images, videos, etc. The foldable screen 10 can be folded into a first part 11 and a second part 12. The foldable screen 10 also includes a third part 13 located between the first part 11 and the second part 12. At least the third part 13 of the foldable screen 10 is made of a flexible material. The first part 11 and the second part 12 can be made of flexible materials, rigid materials, or a combination of both; no specific limitations are made here.

[0056] Specifically, the foldable screen 10 can be an organic light-emitting diode (OLED) screen, a micro organic light-emitting diode (micro organic light-emitting diode) screen, a quantum dot light-emitting diode (QLED) screen, a liquid crystal display (LCD) screen, etc.

[0057] The foldable screen 10 can fold between an unfolded state and a folded state.

[0058] Please see Figure 2 , Figure 2 for Figure 1 The diagram shows the structure of the electronic device 100 when the folding screen 10 is in the unfolded state. When the folding screen 10 is unfolded, the first part 11, the second part 12, and the third part 13 are coplanar and face the same direction. In this state, a large-screen display can be achieved, providing users with richer information and a better user experience.

[0059] Please see Figure 3 , Figure 3 for Figure 1 The diagram shows the structure of the electronic device 100 when the folding screen 10 is in a folded state. When the folding screen 10 is in a folded state, the third part 13 is in a bent state, and the first part ( Figure 3 (not shown in the image) and the second part ( Figure 3 (Not shown in the image) The folding screen 10 is invisible to the user, and the support device 20 protects the folding screen 10 from being scratched by hard objects.

[0060] The support device 20 supports the folding screen 10 and allows the folding screen 10 to fold between an unfolded state and a folded state. See also... Figure 4 , Figure 4 for Figure 1 The diagram shows a perspective view of the support device 20 in the electronic device 100. In this embodiment, the support device 20 includes a first housing 21, a second housing 22, and a rotating mechanism 23. It is understood that... Figure 4 The support device 20 is shown only schematically, and the actual shape, size, position, and construction of these components are not subject to change. Figure 4 Restrictions.

[0061] The first housing 21 is used for fixing and supporting. Figure 1The first part 11 of the folding screen 10. Specifically, the first housing 21 has a bonding surface M1, which is used to fix and support the screen via the bonding surface M1. Figure 1 The first part 11 of the foldable screen 10.

[0062] The second housing 22 is used for fixing and supporting. Figure 1 The second part 12 of the folding screen 10. Specifically, the second housing 22 has a bonding surface M2, which is used to fix and support the screen via the bonding surface M2. Figure 1 The second part 12 of the foldable screen 10.

[0063] The interior of the first housing 21 forms a first receiving cavity (not shown in the figure). The interior of the second housing 22 forms a second receiving cavity (not shown in the figure). The first and second receiving cavities are used to accommodate electronic components such as the motherboard, battery, camera module, speaker, and earpiece of the electronic device 100.

[0064] The first housing 21 can be a single structural unit or assembled from multiple parts. Similarly, the second housing 22 can be a single structural unit or assembled from multiple parts.

[0065] In some embodiments, please refer to Figure 5 , Figure 5 for Figure 4 An exploded view of the support device 20 is shown. The first housing 21 includes a first middle frame 211 and a first back cover 212. A mating surface M1 is located on the first middle frame 211. The first back cover 212 is fixed to the side of the first middle frame 211 opposite to the mating surface M1. A first receiving cavity is formed between the first middle frame 211 and the first back cover 212.

[0066] The second housing 22 includes a second middle frame 221 and a second back cover 222. A mating surface M2 is located on the second middle frame 221. The second back cover 222 is fixed to the side of the second middle frame 221 opposite to the mating surface M2. A second receiving cavity is formed between the second middle frame 221 and the second back cover 222.

[0067] The rotating mechanism 23 supports the third part 13 of the foldable screen 10. Furthermore, the rotating mechanism 23 connects the first housing 21 and the second housing 22, enabling a rotatable connection between them. In some embodiments, the rotating mechanism 23 connects the first middle frame 211 of the first housing 21 and the second middle frame 221 of the second housing 22. In other embodiments, the rotating mechanism 23 may also connect the first back cover 212 of the first housing 21 and the second back cover 222 of the second housing 22.

[0068] The number of rotating mechanisms 23 can be one, two, or more. Figure 4 and Figure 5 The example given is only that there are two rotating mechanisms 23, which should not be considered a particular limitation of this application. The two rotating mechanisms 23 are spaced apart along the length of the folding axis of the folding screen 10.

[0069] Please see Figure 6 , Figure 6 This is a schematic diagram of the assembly structure of the first middle frame 211, the rotating mechanism 23, and the second middle frame 221 within the support device 20 provided in some embodiments of this application. In this embodiment, the rotating mechanism 23 includes a base 231, a first door panel 232, a first connecting member Q1, and a first swing arm 233. It can be understood that... Figure 6 The diagram only schematically illustrates some of the components included in the rotating mechanism 23; the actual shape, size, position, and construction of these components are not subject to change. Figure 6 Restrictions.

[0070] Please see Figure 7 and Figure 8 , Figure 7 for Figure 6 The diagram shows the assembly structure of the first middle frame 211, base 231, first door panel 232, first connector Q1, and first swing arm 233. Figure 8 for Figure 7 The exploded view of the assembly structure shown. The first door panel 232 is hinged to the base 231.

[0071] In some embodiments, please refer to Figure 9 , Figure 9 for Figure 7 The diagram shows the structural design of the base 231 in the assembly structure. In this embodiment, the base 231 is provided with a first hinge groove 2311. The inner wall of the first hinge groove 2311 is provided with a first arc-shaped rib 2312. The extension path of the first arc-shaped rib 2312 can be a major arc (i.e., an arc with a central angle greater than 180°), a minor arc (i.e., an arc with a central angle less than 180°), or a semi-circular arc (i.e., an arc with a central angle equal to 180°), and is not specifically limited here. Figure 9 In the illustrated embodiment, the extension path of the first arc-shaped rib 2312 is a minor arc. In some embodiments, there are two first arc-shaped ribs 2312, which are respectively disposed on two opposite inner walls of the first hinge groove 2311, and the center lines of the two first arc-shaped ribs 2312 are collinear. In other embodiments, there may be only one first arc-shaped rib 2312. The base 231 is also provided with a hinge shaft 2313, which is parallel to the center line of the first arc-shaped rib 2312.

[0072] Please see Figure 10 , Figure 10 for Figure 7 The diagram shows the structure of the first door panel 232 in the assembly structure. In this embodiment, the first door panel 232 is provided with a first hinge block 2321. The first hinge block 2321 can be fixed to the first door panel 232 by adhesive, or it can be integrally formed with the first door panel 232, that is, the first hinge block 2321 and the first door panel 232 are a single structural component. The first hinge block 2321 is provided with a first arc-shaped long groove 2322. In some embodiments, there are two first arc-shaped long grooves 2322, which are respectively provided on two opposite side walls of the first hinge block 2321, and the center lines of the two first arc-shaped long grooves 2322 are collinear. In other embodiments, there may be only one first arc-shaped long groove 2322.

[0073] Figure 10 The first hinge block 2321 in the middle is fitted and accommodated in Figure 9 It is located within the first hinge groove 2311 and can rotate around the center line of the first arc-shaped rib 2312 within the first hinge groove 2311. Figure 9 The two first arc-shaped ribs 2312 are respectively fitted into Figure 10 The first door panel 232 is located within the two first arc-shaped long grooves 2322. This achieves the hinge connection between the first door panel 232 and the base 231. This structure is simple and easy to implement.

[0074] In the above embodiments, the first arc-shaped long groove 2322 can also be disposed on the inner wall of the first hinge groove 2311, and the first arc-shaped rib 2312 can also be disposed on the first hinge block 2321, without specific limitations.

[0075] The first connector Q1 is hinged to the first door panel 232.

[0076] In some embodiments, please refer to Figure 11 , Figure 11 for Figure 10 The diagram shows the structure of the first door panel 232 from another perspective. In this embodiment, the first door panel 232 is provided with a second hinge block 2323. The second hinge block 2323 can be fixed to the first door panel 232 by adhesive, or it can be integrally formed with the first door panel 232, that is, the second hinge block 2323 and the first door panel 232 are a single structural component. The second hinge block 2323 is provided with a second arc-shaped elongated groove 2324. The first door panel 232 is also provided with a first guide groove C1.

[0077] Please see Figure 12 , Figure 12 for Figure 7 The diagram shows the assembly structure of the first connector Q1 and the first middle frame 211. The first connector Q1 also has a second guide groove C2. (Please refer to...) Figure 13 , Figure 13 for Figure 12 The diagram shows a partial enlarged view of region I in the assembly drawing. In this embodiment, the first connector Q1 is provided with a second hinge groove 2111. The second hinge groove 2111 is provided with a second arc-shaped rib 2112.

[0078] Figure 11 The second hinge block 2323 in the middle is fitted and accommodated in Figure 13 It is located within the second hinge groove 2111 and can rotate within the second hinge groove 2111 around the center line of the second arc-shaped long groove 2324. Figure 13 The second arc-shaped rib 2112 in the middle fits and is accommodated in Figure 11 The first connector Q1 is hinged to the first door panel 232 within the second arc-shaped long groove 2324. This structure is simple and easy to implement.

[0079] The first connector Q1 is fixed to the first middle frame 211. Specifically, the first connector Q1 can be fixed to the first middle frame 211 by means of threaded connection, riveting, bonding, etc., or it can be integrally formed with the first middle frame 211.

[0080] Please see Figure 14 , Figure 14 for Figure 7 The diagram shows a cross-sectional view of the assembly structure at line AA. The hinge axis between the first door panel 232 and the base 231 is the first hinge axis L1, and the hinge axis between the first connector Q1 and the first door panel 232 is the second hinge axis L2. The first hinge axis L1 and the second hinge axis L2 are arranged parallel to each other. Both the base 231 and the first door panel 232 have mating surfaces. Specifically, the first door panel 232 has a mating surface M2, and the base 231 has a mating surface M3. The mating surfaces M2 and M3 are used to mat the third part 13 of the folding screen 10.

[0081] The first connector Q1 can rotate relative to the base 231 between an unfolded position and a folded position about the first hinge axis L1 and the second hinge axis L2.

[0082] For details, please refer to Figure 15 , Figure 15 for Figure 14 The diagram shows the structure when the first connector Q1 is in the unfolded position. In this position, the mating surfaces M1, M2, and M3 are coplanar and face the same direction. This position represents the location of the first connector Q1 relative to the base 231 and the first door panel 232 when the folding screen 10 is in the unfolded state.

[0083] Please see Figure 16 , Figure 16 for Figure 14The diagram shows the structure when the first connector Q1 is in the folded position. In this position, the mating surface M1 is perpendicular to the mating surface M3. This position represents the location of the first connector Q1 relative to the base 231 when the folded screen 10 is in the folded state.

[0084] In some embodiments, please refer to Figures 14-16 The first hinge axis L1 is located on the side facing the mating surface M3, and the first hinge axis L1 is spaced apart from the mating surface M3. Thus, when the first connector Q1 rotates from the unfolded position to the folded position, the base 231 can sink to avoid obstructing the folding screen 10, thereby giving the folding screen 10 a larger inward folding angle and extending its service life. When the first connector Q1 rotates from the folded position to the unfolded position, the base 231 can be raised so that the mating surface M3 of the base 231 is flush with the mating surfaces M1 and M2, ensuring the folding screen 10 remains flat.

[0085] In some embodiments, please continue reading Figures 14-16 The second hinge axis L2 coincides with the edge of the mating surface M2 near the mating surface M1 (that is, the second edge b mentioned below). In this way, when the first connector Q1 moves between the unfolded position and the folded position, the relative position between the edge of the mating surface M2 near the mating surface M1 and the mating surface M1 is fixed, which will not damage the folding screen 10, thereby extending the service life of the folding screen 10.

[0086] The first swing arm 233 is used to control the movement state of the first door panel 232 when the first connecting member Q1 rotates between the unfolded position and the folded position, so that when the first connecting member Q1 is in the folded position, please refer to [the previous text]. Figure 16 The angle between bonding surfaces M2 and M3 on the side used for bonding the folding screen 10 is α, which is less than 90°. The angle between bonding surfaces M2 and M1 on the side used for bonding the folding screen 10 is β, which is greater than 180°. Bonding surfaces M1 and M3 are perpendicular or approximately perpendicular. α + β is approximately equal to 270°. This allows the folding screen portion bonded to bonding surfaces M1, M3, and M2 to be folded into a teardrop shape, increasing the inward folding angle (R angle) of the folding screen 10 and extending its lifespan. Optionally, 65° ≤ α ≤ 82°. This moderate angle α increases the R angle of the bending area of ​​the folding screen 10, effectively extending its lifespan.

[0087] To achieve the above objective, specifically, one end of the first swing arm 233 is hinged to the base 231. In some embodiments, please refer to... Figure 17 , Figure 17 for Figure 7The diagram shows the structure of the first swing arm 233 in the assembly structure. One end of the first swing arm 233 has a hinge hole 2331. The first swing arm 233 is hinged to the hinge shaft 2313 of the base 231 through the hinge hole 2331 (see [reference]). Figure 9 The first rocker arm 233 is mounted on the other end of a first sliding member 234. In some embodiments, the first sliding member 234 is a pin. In other embodiments, the first sliding member 234 may also be a roller. The first sliding member 234 is interference-fitted into the mounting hole 2332 of the first rocker arm 233. Please refer to... Figure 18 and Figure 19 , Figure 18 for Figure 7 The diagram shows the assembly structure from another perspective. Figure 19 for Figure 18 Enlarged view of a portion of region II. The first sliding member 234 is slidably connected to the first guide groove C1 of the first door panel 232 and the second guide groove C2 of the first connecting member Q1.

[0088] When the first connector Q1 rotates relative to the base 231 between the unfolded position and the folded position, it can push the first slider 234 through the second guide groove C2, so that the first slider 234 slides along the first guide groove C1 and the second guide groove C2, thereby driving the first door panel 232 to move together with the first connector Q1. Thus, the purpose of controlling the movement state of the first door panel 232 is achieved.

[0089] Please see Figure 20 and Figure 21 , Figure 20 This is a schematic diagram showing the relative positions of the first sliding member 234, the first guide groove C1, the second guide groove C2, the mating surface M3, the mating surface M2, and the mating surface M1 when the first connecting member Q1 is in the unfolded position. Figure 21 This is a schematic diagram showing the relative positions of the first slider 234, the first guide groove C1, the second guide groove C2, the mating surface M3, the mating surface M2, and the mating surface M1 when the first connector Q1 is in the folded position. In this embodiment, the first guide groove C1 and the second guide groove C2 are located on the side of the plane where the mating surface M2 is located that is away from the folded screen 10. The orthographic projection of the first guide groove C1 on the mating surface M2 is the first projection K1. The orthographic projection of the second guide groove C2 on the mating surface M2 is the second projection K2. The edge of the mating surface M2 near the mating surface M3 is the first edge a, and the edge of the mating surface M2 near the mating surface M1 is the second edge b. The first projection K1 and the second projection K2 are located between the straight line where the first edge a is located and the straight line where the second edge b is located. In this way, the rotating mechanism 23 has a simple structure and a small volume. Moreover, the first guide groove C1 and the second guide groove C2 will not interfere with the folded screen 10.

[0090] Based on the above embodiments, optional provisions may be made; please continue to refer to [the relevant documentation]. Figure 20 and Figure 21 The first guide groove C1 has two ends, A1 and A2, respectively. The first guide groove C1 extends from A1 to A2 towards the base 231. The second guide groove C2 has two ends, B1 and B2, respectively. The second guide groove C2 extends from B1 to B2 towards the base 231. When the first connector Q1 rotates from the unfolded position to the folded position, the first slider 234 slides from the first end A1 of the first guide groove C1 and the third end B1 of the second guide groove C2 towards the second end A2 of the first guide groove C1 and the fourth end B2 of the second guide groove C2. This results in better smoothness when the first connector Q1 rotates from the unfolded position to the folded position, making the unfolding and folding of the electronic device easier.

[0091] Based on the above embodiments, optionally, please refer to... Figure 20 and Figure 21 The second guide groove C2 extends from the third end B1 to the fourth end B2 in a direction away from the plane where the mating surface M1 is located. That is, as the second guide groove C2 slides from the third end B1 to the fourth end B2, the vertical distance between it and the plane where the mating surface M1 is located increases. Please refer to [link / reference needed]. Figure 20 During the rotation of the first connector Q1 from the unfolded position to the folded position along direction a1, the second guide groove C2 can push the first slider 234 to gradually move away from the folding screen 10 (i.e., direction a2), thereby causing the end of the first door panel 232 near the base 231 to gradually tilt away from the end of the first door panel 232 near the first connector Q1 in a direction away from the folding screen 10 (i.e., direction a3). This gradually rotates the device to the folded position. This structure is simple, and the driving force applied to the first middle frame 211 can be directly transmitted to the first slider 234 to push the first door panel 232 to tilt. Therefore, the folding driving force of the electronic device 100 is strong, and the probability of jamming is low.

[0092] In the above embodiments, the second guide groove C2 can extend along a straight line or along an arc, without specific limitation. Figure 20 and Figure 21 In the illustrated embodiment, the second guide groove C2 is an arc-shaped groove. That is, the second guide groove C2 extends along an arc. The extension path of the second guide groove C2 arches towards the mating surface M2. In this way, during the rotation of the first connector Q1 from the unfolded position to the folded position along direction a1, the tilt angle of the first door panel 232 can be smoothly controlled by the second guide groove C2, thereby increasing the folding stability of the electronic device 100 and reducing the probability of jamming.

[0093] Based on the above embodiments, the first guide groove C1 can extend along a straight line or along an arc, without specific limitation. Optionally, please refer to... Figure 20 and Figure 21 The first guide groove C1 is an arc-shaped groove. That is, the first guide groove C1 also extends along an arc. The extension path of the first guide groove C1 arches away from the mating surface M2. In this way, during the rotation of the first connector Q1 from the unfolded position to the folded position along direction a1, the second guide groove C2 cooperates with the first guide groove C1 to control the change of the tilt angle of the first door panel 232 to be gradual and the force to be stable, thereby further increasing the folding stability of the electronic device 100 and reducing the probability of jamming.

[0094] In some embodiments, please refer to Figure 22 , Figure 22 This diagram illustrates the relationship between the first guide groove C1, the second guide groove C2, and the second hinge axis L2 when the first connector Q1 is in the deployed position. The length of the first guide groove C1 along its extension path is d1, and the length of the second guide groove C2 along its extension path is d2. The range of d1 and d2 is [3.5mm, 10mm]. Alternatively, the range of d1 and d2 can be [3.5mm, 5mm].

[0095] In some embodiments, please refer to... Figure 22 The radius of curvature of the first guide groove C1 at each position along its extension path is R1, and the radius of curvature of the second guide groove C2 at each position along its extension path is R2. The range of R1 and R2 is [3mm, 7mm]. Optionally, the range of R1 and R2 is [4mm, 5.5mm].

[0096] In some embodiments, when the first connector Q1 is in the unfolded position, please refer to [the documentation / reference needed]. Figure 22 The angle between the perpendicular line from the second end A2 to the second hinge axis L2 and the perpendicular line from the fourth end B2 to the second hinge axis L2 is γ. This γ = 90° - α = β - 180°. Where α and β are... (See...) Figure 16 .

[0097] Please return to the reference. Figure 6The rotating mechanism 23 also includes a second door panel 235, a second connector Q2, and a second swing arm 236. The second door panel 235 is located between the base 231 and the second connector Q2, and is hinged to the base 231. The second connector Q2 is hinged to the second door panel 235 and fixed to the second middle frame 221. The second door panel 235 has a mating surface for mating the folding screen 10. The second door panel 235 has a third guide groove. The second connector Q2 has a fourth guide groove. One end of the second swing arm 236 is hinged to the base 231, and the other end of the second swing arm 236 has a second sliding member that is slidably connected within the third and fourth guide grooves. The second connector Q2 can rotate relative to the base 231 between an unfolded position and a folded position. When the second connector Q2 is in the unfolded position, the contact surfaces of the base 231, the second door panel 235, and the second middle frame 221 are coplanar and face the same direction. When the second connector Q2 is in the folded position, the angle between the contact surfaces of the base 231 and the second door panel 235 on the side for attaching the folded screen 10 is less than 90°, the angle between the contact surfaces of the second door panel 235 and the second middle frame 221 on the side for attaching the folded screen 10 is greater than 180°, and the contact surface of the second middle frame 221 is perpendicular or approximately perpendicular to the contact surface of the base 231. Specifically, the structure, assembly, and movement of the second door panel 235, the second connector Q2, the second swing arm 236, the third guide groove, the fourth guide groove, and the second sliding member are the same as those of the first door panel 232, the first connector Q1, the first swing arm 233, the first guide groove C1, the second guide groove C2, and the first sliding member 234, respectively, and will not be described in detail here. In this way, the support device 20 can fold the third part 13 of the folding screen 10 into a teardrop shape. The inner folding angle (R angle) of this third part 13 is relatively large, thus extending the lifespan of the folding screen 10.

[0098] Please see Figure 23 , Figure 23 for Figure 6 The assembly structure shown is a schematic diagram of the folding screen 10 in its unfolded state. In this state, the mating surfaces of the first middle frame 211, the first door panel 232, the base 231, the second door panel 235, and the second middle frame 221 are coplanar. The first part 11 of the folding screen 10 is supported and fixed to the mating surface of the first middle frame 211. The second part 12 of the folding screen 10 is supported and fixed to the mating surface of the second middle frame 221. The third part 13 of the folding screen 10 is supported and fixed to the mating surfaces of the first door panel 232 and the second door panel 235. The third part 13 of the folding screen 10 is also supported on the mating surface of the base 231.

[0099] Please see Figure 24 , Figure 24 for Figure 6 The assembly structure shown is a schematic diagram of the foldable screen 10 in the folded state. In this state, the mating surfaces of the first middle frame 211 and the second middle frame 221 are positioned opposite each other. Both the mating surfaces of the first middle frame 211 and the second middle frame 221 are perpendicular to the mating surface of the base 231. The mating surface of the first door panel 232 slopes away from the foldable screen 10 from one end near the mating surface of the first middle frame 211 to one end near the mating surface of the base 231. The mating surface of the second door panel 235 slopes away from the foldable screen 10 from one end near the mating surface of the second middle frame 221 to one end near the mating surface of the base 231. The first part 11 of the foldable screen 10 is supported and fixed to the mating surface of the first middle frame 211. The second part 12 of the foldable screen 10 is supported and fixed to the mating surface of the second middle frame 221. The third part 13 of the folding screen 10 is supported and fixed to the bonding surfaces of the first door panel 232 and the second door panel 235. The third part 13 of the folding screen 10 is teardrop-shaped. The inner folding angle (R angle) of this third part 13 is relatively large, thus extending the lifespan of the folding screen 10.

[0100] In this embodiment of the application, it is worth noting that the rotating mechanism 23 may also exclude the second door panel 233, the second connector Q1, the third guide slide, the fourth guide slide, and the second swing arm 236, and directly fix the second housing 22 to the base 231, so that the contact surface of the second housing 22 is perpendicular or approximately perpendicular to the contact surface M3 of the base 231, so as to achieve 90° opening and closing folding.

[0101] Since the support device 20 provided in this application embodiment includes the rotation mechanism 23 described in any of the above embodiments, the two can solve the same technical problem and achieve the same effect.

[0102] Since the electronic device 100 provided in this application embodiment includes the support device 20 described in any of the above embodiments, the two can solve the same technical problem and achieve the same effect.

[0103] 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.

[0104] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. A rotating mechanism (23), characterized in that, Includes a base (231), a first door panel (232), a first connector (Q1), and a first swing arm (233); The first door panel (232) is hinged to the base (231), and the first connector (Q1) is hinged to the first door panel (232). The first connector (Q1) is used to fix to the first housing (21). The first door panel (232) is provided with a first guide groove (C1), the first connector (Q1) is provided with a second guide groove (C2), one end of the first swing arm (233) is hinged to the base (231), and the other end of the first swing arm (233) is provided with a first sliding member (234). The first sliding member (234) is slidably connected in the first guide groove (C1) and the second guide groove (C2). The first guide groove (C1) has two ends, namely a first end (A1) and a second end (A2), and the first guide groove (C1) extends from the first end (A1) to the second end (A2) in a direction close to the base (231); The two ends of the second guide groove (C2) are the third end (B1) and the fourth end (B2), respectively. The second guide groove (C2) extends from the third end (B1) to the fourth end (B2) in a direction close to the base (231). The base (231), the first door panel (232) and the first housing (21) all have a bonding surface, which is used to bond the folding screen (10). The first connector (Q1) is rotatable relative to the base (231) between an unfolded position and a folded position; when the first connector (Q1) is in the unfolded position, the mating surfaces of the base (231), the first door panel (232), and the first housing (21) are coplanar and face the same direction; when the first connector (Q1) is in the folded position, the angle between the mating surfaces of the base (231) and the first door panel (232) on the side for mating the folded screen (10) is less than 90°, and the angle between the mating surfaces of the first door panel (232) and the first housing (21) on the side for mating the folded screen (10) is greater than 180°. When the first connector (Q1) rotates from the unfolded position to the folded position, the sliding direction of the first slider (234) in the first guide groove (C1) is from the first end (A1) to the second end (A2), and the sliding direction of the first slider (234) in the second guide groove (C2) is from the third end (B1) to the fourth end (B2).

2. The rotating mechanism (23) according to claim 1, characterized in that, When the first connector (Q1) is in the folded position, the mating surface of the first housing (21) is perpendicular to the mating surface of the base (231).

3. The rotating mechanism (23) according to claim 1, characterized in that, The first guide groove (C1) and the second guide groove (C2) are located on the side of the first door panel (232) away from the folding screen (10) on the mating surface.

4. The rotating mechanism (23) according to claim 3, characterized in that, The orthographic projection of the first guide groove (C1) on the mating surface of the first door panel (232) is the first projection (K1), and the orthographic projection of the second guide groove (C2) on the mating surface of the first door panel (232) is the second projection (K2). The edge of the mating surface of the first door panel (232) near the mating surface of the base (231) is the first edge (a), and the edge of the mating surface of the first door panel (232) near the mating surface of the first housing (21) is the second edge (b). The first projection (K1) and the second projection (K2) are located between the straight line where the first edge (a) is located and the straight line where the second edge (b) is located.

5. The rotating mechanism (23) according to claim 1, characterized in that, When the first connector (Q1) is in the unfolded position, the first slider (234) is located at the first end (A1) and the third end (B1); when the first connector (Q1) is in the folded position, the first slider (234) is located at the second end (A2) and the fourth end (B2).

6. The rotating mechanism (23) according to claim 1, characterized in that, The second guide groove (C2) extends from the third end (B1) to the fourth end (B2) in a direction away from the plane where the mating surface of the first housing (21) is located.

7. The rotating mechanism (23) according to claim 6, characterized in that, The second guide groove (C2) is an arc-shaped groove, and the extension path of the second guide groove (C2) arches towards the mating surface of the first door panel (232).

8. The rotating mechanism (23) according to claim 7, characterized in that, The first guide groove (C1) is an arc-shaped groove, and the extension path of the first guide groove (C1) arches away from the mating surface of the first door panel (232).

9. The rotating mechanism (23) according to claim 8, characterized in that, The length range of the first guide groove (C1) and the second guide groove (C2) along their own extension path is [3.5mm, 10mm].

10. The rotating mechanism (23) according to claim 8, characterized in that, The curvature radius range of the first guide groove (C1) and the second guide groove (C2) at various positions along their extension paths is [3mm, 7mm].

11. The rotating mechanism (23) according to any one of claims 1-10, characterized in that, When the first connector (Q1) is in the folded position, the angle between the contact surface of the base (231) and the contact surface of the first door panel (232) on the side used to contact the folded screen (10) is greater than or equal to 65° and less than or equal to 82°.

12. The rotating mechanism (23) according to any one of claims 1-10, characterized in that, The base (231) is provided with a first arc-shaped rib (2312); the first door panel (232) is provided with a first arc-shaped long groove (2322); the first arc-shaped rib (2312) is fitted into the first arc-shaped long groove (2322).

13. The rotating mechanism (23) according to claim 12, characterized in that, The base (231) is provided with a first hinge groove (2311), and the first arc-shaped rib (2312) is disposed in the first hinge groove (2311); The first door panel (232) is provided with a first hinge block (2321), and the first arc-shaped long groove (2322) is provided on the first hinge block (2321); the first hinge block (2321) is fitted and accommodated in the first hinge groove (2311).

14. The rotating mechanism (23) according to any one of claims 1-10, characterized in that, The first door panel (232) is provided with a second arc-shaped long groove (2324); the first connector (Q1) is provided with a second arc-shaped rib (2112), and the second arc-shaped rib (2112) is fitted into the second arc-shaped long groove (2324).

15. The rotating mechanism (23) according to claim 14, characterized in that, The first door panel (232) is provided with a second hinge block (2323), and the second arc-shaped long groove (2324) is provided on the second hinge block (2323); The first connector (Q1) is provided with a second hinge groove (2111), and the second arc-shaped rib (2112) is disposed in the second hinge groove (2111); the second hinge block (2323) is fitted and accommodated in the second hinge groove (2111).

16. The rotating mechanism (23) according to any one of claims 1-10, characterized in that, The hinge axis between the first door panel (232) and the base (231) is the first hinge axis (L1). The first hinge axis (L1) is located on the side facing the mating surface of the base (231) and is spaced apart from the mating surface of the base (231).

17. The rotating mechanism (23) according to claim 4, characterized in that, The hinge axis between the first connector (Q1) and the first door panel (232) is the second hinge axis (L2). The second hinge axis (L2) coincides with the second edge (b).

18. The rotating mechanism (23) according to any one of claims 1-10, characterized in that, It also includes a second door panel (235), a second connector (Q2), and a second swing arm (236); The second door panel (235) is hinged to the base (231), and the second connector (Q2) is hinged to the second door panel (235). The second connector (Q2) is used to fix the second housing (22). The second door panel (235) is provided with a third guide groove; the second connector (Q2) is provided with a fourth guide groove; one end of the second swing arm (236) is hinged to the base (231), and the other end of the second swing arm (236) is provided with a second sliding member, which is slidably connected to the third guide groove and the fourth guide groove; The second door panel (235) and the second housing (22) both have a bonding surface, which is used to bond the folding screen (10). The second connector (Q2) is rotatable relative to the base (231) between an unfolded position and a folded position. When the second connector (Q2) is in the unfolded position, the mating surfaces of the base (231), the second door panel (235), and the second housing (22) are coplanar and face the same direction. When the second connector (Q2) is in the folded position, the angle between the mating surfaces of the base (231) and the second door panel (235) on the side for mating the folded screen (10) is less than 90°, and the angle between the mating surfaces of the second door panel (235) and the second housing (22) on the side for mating the folded screen (10) is greater than 180°.

19. A support device (20), characterized in that, It includes a first housing (21), a second housing (22) and a rotating mechanism (23) as described in any one of claims 1-18, wherein the rotating mechanism (23) is located between the first housing (21) and the second housing (22), and the first connecting member (Q1) of the rotating mechanism (23) is fixed to the first housing (21), and the base (231) of the rotating mechanism (23) is connected to the second housing (22).

20. An electronic device (100), characterized in that, Includes a foldable screen (10) and the support device (20) as described in claim 19; The folding screen (10) includes a first part (11), a second part (12) and a third part (13), wherein the third part (13) is located between the first part (11) and the second part (12); The first part (11) is supported and fixed on the mating surface of the first housing (21) of the support device (20), the second part (12) is supported and fixed on the mating surface of the second housing (22) of the support device (20), and the third part (13) is supported and fixed on the rotating mechanism (23) of the support device (20).

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