Rotating shaft device and electronic equipment
By incorporating an arc-shaped sliding connection between a sliding component and a synchronous rotating component in the pivot device, the problem of low structural reliability in the folded state is solved, improving the reliability of electronic devices during drops and preventing damage to the display screen.
Patent Information
- Application Number
- CN202411012868.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-25
- Publication Date
- 2026-01-27
AI Technical Summary
The hinge mechanism of existing foldable electronic devices has low structural reliability in the folded state, and the flexible display screen is easily damaged by impact when dropped.
A rotating shaft device is designed, including a base, a first rotating mechanism, and a second rotating mechanism. By setting an arc-shaped sliding connection between a first sliding member and a first synchronous rotating member, the uniqueness and reliability of the motion trajectory are ensured, and support is provided during a fall. The rotation angle of the synchronous rotating member is reduced to avoid impacting the display screen.
It achieves uniqueness and reliability of the motion trajectory of the rotating shaft device in the folded state, improves reliability during drops, avoids impact between the synchronous rotating parts and the display screen, and increases the gap in the folded state.
Smart Images
Figure CN121408352A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of folding structure technology, specifically to a pivot device and electronic device. Background Technology
[0002] With the continuous development of display technology, various types of electronic devices have been launched. Foldable electronic devices, which combine a small overall size with a large display screen, are increasingly popular. However, to meet the folding requirements of electronic devices, the key lies in the rational design of the hinge mechanism. To achieve synchronous flipping and stable support within a limited space, multiple different movable components are often required. The movement trajectories of these movable components are not unique, and the direction of movement of the electronic device's casing is generally consistent with the direction of the force exerted by a drop impact, which reduces the structural reliability in the folded state. Summary of the Invention
[0003] On one hand, this application provides a rotating shaft device, including a base, a first rotating mechanism, and a second rotating mechanism. The first rotating mechanism and the second rotating mechanism are rotatably connected to opposite sides of the base to enable the rotating shaft device to have a folded state and an unfolded state. The first rotating mechanism includes a first trajectory rotating member, a first synchronous rotating member, and a first sliding member. The first trajectory rotating member is rotatably connected to the base around a first fixed rotation axis, and the first synchronous rotating member is rotatably connected to the base around a first fixed synchronous axis. The first fixed rotation axis is parallel to and does not coincide with the first fixed synchronous axis. The first sliding member is connected to the end of the first trajectory rotating member away from the base, and the first sliding member can slide relative to the first trajectory rotating member along a first direction. The first sliding member is connected to the end of the first synchronous rotating member away from the base, and the first sliding member can slide relative to the first rotating member along a third direction. The projection of the first direction and the third direction onto a first plane is not parallel, and the projection of the third direction onto the first plane is arc-shaped. The third direction is the direction in which the first sliding member moves toward or away from the base. The first plane is a reference plane perpendicular to the first fixed rotation axis.
[0004] On the other hand, this application provides an electronic device including a first housing, a second housing, a flexible display screen, and the aforementioned rotating shaft device, wherein the first housing is connected to the first rotating mechanism, the second housing is connected to the second rotating mechanism, and the flexible display screen continuously covers the first housing, the base, and the second housing.
[0005] The beneficial effects of the embodiments of this application are as follows:
[0006] 1. The rotating shaft device provided in this application embodiment can not only be folded, but also move according to a preset folding trajectory to obtain the desired folding shape. One end of the first trajectory rotating member and the first synchronous rotating member are rotatably connected to the base, and the other end is slidably connected to the first sliding member. When the first sliding member rotates relative to the base, it drives the first trajectory rotating member and the first synchronous rotating member to rotate relative to the base. Since the first sliding member can slide relative to the first trajectory rotating member and the first synchronous rotating member respectively, a movable mechanism with a planar degree of freedom of 1 is formed, which can realize the uniqueness and reliability of the movement trajectory of the first trajectory rotating member, the first synchronous rotating member and the first sliding member.
[0007] 2. By setting the first direction and the third direction to be non-parallel, the first trajectory rotating component and the first synchronous rotating component can be mutually restrained during the movement of the first rotating mechanism, so as to avoid the first sliding component from undergoing a large instantaneous displacement relative to the first trajectory rotating component or the first synchronous rotating component.
[0008] 3. By setting the relative sliding direction of the first sliding member and the first synchronous rotating member to an arc shape, so that it is not consistent with the falling direction of the first sliding member, the first synchronous rotating member can provide upward support for the first sliding member during the falling process, thereby improving the reliability of the first sliding member during the falling.
[0009] 4. When the first sliding member rotates at a 90° angle when the rotating shaft device switches between folded and unfolded states, setting the third direction to an arc shape can reduce the required rotation angle of the first synchronous rotating member, thereby increasing the gap between the first synchronous rotating member and the flexible display screen in the folded state and preventing the first synchronous rotating member and the first trajectory rotating member from colliding with the flexible display screen when the electronic device is subjected to a drop impact. Attached Figure Description
[0010] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0011] Figure 1 These are cross-sectional views of electronic devices in some embodiments of this application;
[0012] Figure 2 yes Figure 1 A partial structural schematic diagram of the rotating shaft device in the embodiment;
[0013] Figure 3 yes Figure 2 A partial structural schematic diagram of the first rotating mechanism in the embodiment;
[0014] Figure 4 yes Figure 3 A partial exploded view of the first rotating mechanism in the embodiment;
[0015] Figure 5 yes Figure 3 A simplified structural diagram of the first rotating mechanism in its deployed state in the embodiment;
[0016] Figure 6 yes Figure 5 A simplified structural diagram of the first rotating mechanism in its folded state in the embodiment;
[0017] Figure 7 This is a simplified structural diagram of the first rotating mechanism in its deployed state in another embodiment;
[0018] Figure 8 yes Figure 7 A simplified structural diagram of the first rotating mechanism in its folded state in the embodiment;
[0019] Figure 9 yes Figure 3 A cross-sectional view of the rotating shaft device in the embodiment at one section;
[0020] Figure 10 yes Figure 9 A cross-sectional view of the rotating shaft device in the embodiment at another section;
[0021] Figure 11 yes Figure 3 A schematic diagram of the structure of the first support member in the embodiment;
[0022] Figure 12 yes Figure 3 A schematic diagram of the structure of the first support member and the first sliding member in the embodiment. Detailed Implementation
[0023] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.
[0024] Please see Figure 1 as well as Figure 2 , Figure 1 These are cross-sectional views of electronic devices in some embodiments of this application. Figure 2 yes Figure 1A partial structural diagram of the pivot device in the embodiment. This application provides an electronic device, including a first housing 41a, a second housing 41b, a pivot device, and a flexible display screen 500. The first housing 41a and the second housing 41b are rotatably connected by the pivot device. The flexible display screen 500 can continuously cover the surfaces of the first housing 41a and the second housing 41b. When the first housing 41a and the second housing 41b are folded or unfolded with the pivot device, the flexible display screen 500 can be bent or flattened along with the first housing 41a and the second housing 41b.
[0025] The aforementioned electronic devices include, but are not limited to, mobile terminals such as mobile phones, tablets, laptops, PDAs, personal computers (PCs), personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, and pedometers, as well as fixed terminals such as digital TVs and desktop computers. This embodiment is only illustrative when the electronic device is a mobile phone. Of course, in other embodiments, the electronic device can be of other types, and should also fall within the protection scope of this application.
[0026] Furthermore, the aforementioned hinge device is a folding device capable of relative rotation to achieve folding and unfolding. The hinge device provided in this embodiment can be applied to a wide variety of fields, such as door locks, vehicles, machinery, and electronic products. This embodiment only illustrates the application of the hinge device in a foldable electronic device within the field of electronic products.
[0027] In some embodiments, the rotating shaft device includes a base 100, a first rotating mechanism 200a, and a second rotating mechanism 200b. The first rotating mechanism 200a and the second rotating mechanism 200b are rotatably connected to opposite sides of the base 100 so that the rotating shaft device has a folded state and an unfolded state.
[0028] It is understood that in this embodiment, the first rotating mechanism 200a and the second rotating mechanism 200b may be arranged symmetrically or asymmetrically with respect to the base 100. For ease of description, this application mainly describes the first rotating mechanism 200a and the second rotating mechanism 200b as symmetrically arranged. In the following embodiments, the specific arrangement of the first rotating mechanism 200a and the connection relationship between the first rotating mechanism 200a and the base 100 are mainly used as examples to describe the rotating shaft device, while the second rotating mechanism 200b can be arranged with reference to the first rotating mechanism 200a.
[0029] The base 100 is the fundamental structural component of the rotating shaft device, primarily serving a supporting and mounting function, allowing other structural components of the rotating shaft device to be mounted on the base 100. Furthermore, in some embodiments, the base 100 can also support the flexible display screen 500. This embodiment does not limit the shape, structure, material, or other parameters of the base 100, as long as it provides an assembly base for other structural components. The flexible display screen 500 includes, but is not limited to, various flexible components, various rigid components, or other parts.
[0030] It is worth mentioning that in some scenarios, multiple first rotating mechanisms 200a and second rotating mechanisms 200b can be provided, and multiple first rotating mechanisms 200a and second rotating mechanisms 200b can all use the same base 100 as the supporting component to improve the integration of the rotating shaft device; in other scenarios, the number of first rotating mechanisms 200a, second rotating mechanisms 200b and base 100 is the same, so that each first rotating mechanism 200a and second rotating mechanism 200b uses the corresponding base 100 as the supporting component.
[0031] Please see Figures 2 to 4 , Figure 3 yes Figure 2 A partial structural diagram of the first rotating mechanism in the embodiment. Figure 4 yes Figure 3 A partial exploded view of the first rotating mechanism in the embodiment.
[0032] The first rotating mechanism 200a includes a first trajectory rotating member 21a, a first synchronous rotating member 22a, and a first sliding member 24a. The first trajectory rotating member 21a is rotatably connected to the base 100 about a first fixed rotation axis 201a, and the first synchronous rotating member 22a is rotatably connected to the base 100 about a first fixed synchronous axis 202a. The first fixed rotation axis 201a and the first fixed synchronous axis 202a are parallel and do not coincide.
[0033] Please see Figure 2 as well as Figure 5 , Figure 5 yes Figure 3A simplified structural diagram of the first rotating mechanism in its deployed state in this embodiment. In this embodiment, the first sliding member 24a is slidably connected to the end of the first trajectory rotating member 21a away from the base 100, and the first sliding member 24a can slide relative to the first trajectory rotating member 21a along the first direction A1; the first sliding member 24a is connected to the end of the first synchronous rotating member 22a away from the base 100, and the first sliding member 24a can slide relative to the first synchronous rotating member 22a along a third direction A2. The projections of the first direction A1 and the third direction A2 onto the first plane C1 are not parallel, and the projection of the third direction A2 onto the first plane C1 is arc-shaped. The third direction A2 is the direction in which the first sliding member 24a moves toward or away from the base 100. The first plane C1 is a reference plane perpendicular to the first fixed rotation axis 201a, and the first plane C1 is parallel to... Figure 1 The XZ plane.
[0034] This embodiment does not limit the shape, structure, material, or other parameters of the first trajectory rotating member 21a, the first synchronous rotating member 22a, and the first sliding member 24a. As long as one end of the first trajectory rotating member 21a and the first synchronous rotating member 22a can be rotatably connected to the base 100 and the other end can be slidably connected to the first sliding member 24a, it is acceptable.
[0035] It should be noted that the first trajectory rotating member 21a and the first synchronous rotating member 22a can only rotate relative to the base 100 and cannot slide. The first trajectory rotating member 21a and the base 100 form a low pair fit, and the first synchronous rotating member 22a and the base 100 form a planar low pair fit with 1 degree of freedom. The specific connection structure between the first trajectory rotating member 21a and the first synchronous rotating member 22a and the base 100 will be described in detail later in this application.
[0036] Please see Figure 4 , Figure 5 as well as Figure 6 , Figure 6 yes Figure 5 A simplified structural diagram of the first rotating mechanism in the folded state in the embodiment.
[0037] Exemplarily, a third groove 242a and a third slider 224a are provided between the first sliding member 24a and the first synchronous rotating member 22a. The third groove 242a is disposed between one of the first sliding member 24a and the first synchronous rotating member 22a, and the third slider 224a is disposed between the other. The third groove 242a is an arc-shaped groove. In this embodiment, the third groove 242a is only used as an example where the third groove 242a is disposed on the first sliding member 24a. The third groove 242a extends from the first sliding member 24a in the direction of movement toward or away from the base 100. When the rotating shaft device is in the unfolded state, the axis of the third groove 242a is located on the side of the third groove 242a facing the base 100. Then, when the first synchronous rotating member 22a rotates from the unfolded state to the folded state, the first sliding member 24a moves along the third groove 242a in the direction away from the base 100. In the clockwise direction of the first synchronous rotating member 22a (i.e., Figure 5 During the rotation (in the R direction), since the third slide groove 242a is an arc-shaped slide groove, the first sliding member 24a can rotate clockwise relative to the first synchronous rotating member 22a by a certain angle on top of the clockwise rotation of the first synchronous rotating member 22a relative to the base 100. That is to say, the rotation angle of the first sliding member 24a relative to the second plane C2 is greater than the rotation angle of the first synchronous rotating member 22a relative to the second plane C2. The second plane C2 is a reference plane perpendicular to the thickness direction of the base 100 and located at the bottom of the base 100. The second plane C2 is parallel to the... Figure 2 The XY plane. For example, if the first synchronous rotating member 22a needs to rotate 90°, and the first sliding member 24a, in addition to rotating 90° with the first synchronous rotating member 22a, also needs to slide relative to the arc-shaped groove on the first synchronous rotating member 22a, then the rotation angle of the first synchronous rotating member 22a is greater than 90°. Conversely, if the rotation angle of the first sliding member 24a relative to the second plane C2 is 90°, then the rotation angle of the first synchronous rotating member 22a is less than 90°. Therefore, when the first rotating mechanism 200a switches between the folded state and the unfolded state, that is, when the rotation angle of the first sliding member 24a relative to the second plane C2 is 90°, the required rotation angle of the first synchronous rotating member 22a is less than 90°.
[0038] A first groove 241a and a first slider 212a are provided between the first sliding member 24a and the first trajectory rotating member 21a. The first groove 241a is disposed between one of the first sliding member 24a and the first trajectory rotating member 21a, and the first slider 212a is disposed between the other of the first sliding member 24a and the first trajectory rotating member 21a. In this embodiment, the first groove 241a is disposed on the first sliding member 24a as an example. In this embodiment, the first groove 241a is a straight groove. The first sliding member 24a may include a first inner side 245a and a first outer side 246a disposed opposite to each other. The first inner side 245a may be the side close to the flexible display screen 500. The first direction A1 may be the direction from the first inner side 245a toward the first outer side 246a, or the direction from the first outer side 246a toward the first inner side 245a. When the rotating shaft device is in the unfolded state, the distance from the end of the first slide groove 241a near the base 100 to the second plane C2 is less than the distance from the end of the first slide groove 241a away from the base 100 to the second plane C2.
[0039] Please see Figure 5 as well as Figure 6 When the rotating shaft device is in motion, the movable mechanism is composed of the base 100, the first trajectory rotating member 21a, the first synchronous rotating member 22a, and the first sliding member 24a. The base 100 and the first trajectory rotating member 21a, the base 100 and the first synchronous rotating member 22a, the first sliding member 24a and the first synchronous rotating member 22a, and the first sliding member 24a and the first trajectory rotating member 21a respectively form planar lower-pair fits with 1 degree of freedom. Taking the base 100 as the fixed component, this movable mechanism has 3 movable components and 4 planar lower-pair fits with 1 degree of freedom. According to the formula for calculating the degree of freedom, the degree of freedom of this movable mechanism is:
[0040] F=3n-2PL-Ph=3×3-2×4-0=1,
[0041] Where n is the number of moving components, PL is the number of lower pair constraints, and Ph is the number of higher pair constraints. Since the moving mechanism has 1 degree of freedom, it can ensure the uniqueness and reliability of the motion trajectory of each moving component.
[0042] Similarly, the second rotating mechanism 200b includes a second trajectory rotating member 21b, a second synchronous rotating member 22b, and a second sliding member 24b. The second trajectory rotating member 21b is rotatably connected to the base 100 about a second fixed rotation axis 201b, and the second synchronous rotating member 22b is rotatably connected to the base 100 about a second fixed synchronous axis 202b. The second fixed rotation axis 201b and the second fixed synchronous axis 202b are parallel but not coincident. The second sliding member 24b is connected to the end of the second trajectory rotating member 21b away from the base 100, and the second sliding member 24b can slide relative to the second trajectory rotating member 21b along a second direction B1. The second sliding member 24b is connected to the end of the second synchronous rotating member 22b away from the base 100, and the second sliding member 24b can slide relative to the second synchronous rotating member 22b along a fourth direction B2. The projections of the second direction B1 and the fourth direction B2 onto the first plane C1 are not parallel, and the projection of the fourth direction B2 onto the first plane C1 is arc-shaped.
[0043] Based on the above connection relationship, the rotating shaft device can not only be folded, but also move according to a preset folding trajectory to obtain the desired folding shape. When the first sliding member 24a rotates relative to the base 100, it drives the first trajectory rotating member 21a and the first synchronous rotating member 22a to rotate relative to the base 100. Since the first sliding member 24a can slide relative to the first trajectory rotating member 21a and the first synchronous rotating member 22a respectively, and the sliding directions are not parallel, it can be seen that when the first sliding member 24a slides along the first direction A1 relative to the first trajectory rotating member 21a, the first synchronous rotating member 22a restricts the movement of the first sliding member 24a; or it can be understood that when the first sliding member 24a slides along the third direction A2 relative to the first synchronous rotating member 22a, the first trajectory rotating member 21a restricts the movement of the first sliding member 24a. In this way, during the movement of the first rotating mechanism 200a, the first trajectory rotating member 21a and the first synchronous rotating member 22a can restrain each other, thus preventing the first sliding member 24a from undergoing a large instantaneous displacement relative to the first trajectory rotating member 21a or the first synchronous rotating member 22a.
[0044] Furthermore, in related technologies, the first sliding member 24a is only connected by a straight groove. During a fall, the first sliding member 24a will move downwards. Since the sliding direction of the first sliding member 24a and the first synchronous rotating member 22a is linear, it is consistent with the falling direction of the first sliding member 24a and cannot provide support, resulting in poor fall reliability. In this embodiment, the first sliding member 24a is connected to the third slider 224a of the first synchronous rotating member 22a through a third groove 242a. Since the third groove 242a is arc-shaped, it is not consistent with the falling direction of the first sliding member 24a. During the fall, the third slider 224a on the first synchronous rotating member 22a can provide upward support to the side wall of the third groove 242a, improving the reliability of the first sliding member 24a during a fall.
[0045] Furthermore, a larger rotation angle of the first synchronous rotating member 22a means a smaller gap between the first synchronous rotating member 22a and the flexible display screen 500 in the folded state. This makes it more likely that a drop impact will cause the first synchronous rotating member 22a to collide with the flexible display screen 500, leading to problems with the flexible display screen 500. In this embodiment, while ensuring that the rotation angle of the first sliding member 24a is 90° when the pivot device switches between the folded and unfolded states, the required rotation angle of the first synchronous rotating member 22a can be designed to be smaller. This increases the gap between the first synchronous rotating member 22a and the flexible display screen 500 in the folded state, preventing the first synchronous rotating member 22a from colliding with the flexible display screen 500 during a drop impact.
[0046] Please see Figure 7 as well as Figure 8 , Figure 7 This is a simplified structural diagram of the first rotating mechanism in its deployed state in another embodiment. Figure 8 yes Figure 7 A simplified structural diagram of the first rotating mechanism in the folded state in the embodiment.
[0047] In some embodiments, the projection of the first direction A1 onto the first plane C1 can be arc-shaped, meaning the first slider 24a slides relative to the first trajectory rotating member 21a along an arc-shaped trajectory. In this embodiment, both the first slide groove 241a and the third slide groove 242a are arc-shaped slide grooves. The first slider 212a is in clearance fit with the first slide groove 241a, and the third slide groove 242a is in clearance fit with the third slider 224a. Furthermore, when the rotating shaft device is in the unfolded state, the axis of the first slide groove 241a is located on the side of the first slide groove 241a facing the base 100, and the axis of the third slide groove 242a is located on the side of the third slide groove 242a facing the base 100. As can be seen from the foregoing, by setting the third slide groove 242a as an arc-shaped slide groove, the required rotation angle of the first synchronous rotating member 22a can be reduced when the first rotating mechanism 200a switches between the folded and unfolded states, thereby increasing the gap between the first synchronous rotating member 22a and the flexible display screen 500 in the folded state. Similarly, by setting the first slide groove 241a as an arc-shaped slide groove, the first sliding member 24a can slide along the arc-shaped slide groove relative to the first track rotating member 21a after rotating clockwise relative to the base 100. During the sliding process, it rotates clockwise relative to the first track rotating member 21a by a certain angle. So when the first rotating mechanism 200a switches between the folded and unfolded states, that is, when the rotation angle of the first sliding member 24a relative to the second plane C2 is 90°, the required rotation angle of the first track rotating member 21a is less than 90°. In other words, the required rotation angle of the first track rotating member 21a can be designed to be smaller. This can increase the gap between the first track rotating member 21a and the flexible display screen 500 in the folded state, and prevent the first track rotating member 21a from hitting the flexible display screen 500 during a drop impact.
[0048] Similarly, the projection of the second direction B1 onto the first plane C1 can also be arc-shaped. Therefore, both the second slide groove 241b and the fourth slide groove 242b are arc-shaped slide grooves, with the second slider 212b and the second slide groove 241b in clearance fit, and the fourth slider 224b and the fourth slide groove 242b in clearance fit. Furthermore, when the rotating shaft device is in the unfolded state, the axis of the second slide groove 241b is located on the side of the second slide groove 241b facing the base 100, and the axis of the fourth slide groove 242b is located on the side of the fourth slide groove 242b facing the base 100.
[0049] In this embodiment, the movement of the first trajectory rotating member 21a and the first synchronous rotating member 22a relative to the base 100 is configured to rotate around a specific center. The movement of the first trajectory rotating member 21a and the first synchronous rotating member 22a relative to the first sliding member 24a is configured to slide in an arc shape, which can also be understood as rotating around a specific center in the form of a large arc. By adjusting the position of the center of the large arc, the rotation angle of the first trajectory rotating member 21a and the first synchronous rotating member 22a relative to the base is reduced, so as to increase the clearance space with the flexible display screen 500 and improve the drop reliability.
[0050] Please see Figure 9 as well as Figure 10 , Figure 9 yes Figure 3 A cross-sectional view of the rotating shaft device in the embodiment. Figure 10 yes Figure 9 A cross-sectional view of the rotating shaft device at another section in the embodiment.
[0051] The connection structure between the first trajectory rotating member 21a, the first synchronous rotating member 22a, and the base 100 is further described below. Exemplarily, the base 100 is provided with a first arc-shaped groove 11a. One end of the first trajectory rotating member 21a, which is rotatably connected to the base 100, is provided with a first arc-shaped rotating block 211a. The first arc-shaped rotating block 211a is housed within the first arc-shaped groove 11a and can rotate along the arc surface of the first arc-shaped groove 11a. The axis corresponding to the first arc-shaped groove 11a is the first fixed rotation axis 201a. The axis of the first fixed rotation axis 201a can be located inside or outside the base 100.
[0052] As the first rotating mechanism 200a rotates from the unfolded state to the folded state, the first arc-shaped rotating block 211a moves in the direction of sliding out of the first arc-shaped groove 11a, thereby reducing the size of the portion of the first arc-shaped rotating block 211a corresponding to the inner part of the first arc-shaped groove 11a. The design of the first arc-shaped groove 11a and the first arc-shaped rotating block 211a enables the rotational connection between the first trajectory rotating component 21a and the base 100. This not only satisfies the rotatable angle requirement of the first trajectory rotating component 21a relative to the base 100, realizing the switching between the folded and unfolded states, but also allows for a thinner design of the base 100, achieving a lightweight design of the rotating shaft device within the thickness of the base 100.
[0053] Of course, the first trajectory rotating component 21a can also be connected to the base 100 via a solid shaft. For example, a first fixed rotating shaft is fixedly connected to the base 100. The first fixed rotating shaft is cylindrical and has a first fixed rotating axis 201a as its center. The first trajectory rotating component 21a is sleeved on the first fixed rotating shaft and rotates around the first fixed rotating shaft.
[0054] Furthermore, the first synchronous rotating member 22a and the base 100 can also be rotatably connected to the base 100 via an arc-shaped groove and an arc-shaped rotating block or as a solid shaft, as long as the end of the first synchronous rotating member 22a near the base 100 can rotate around the first fixed synchronous axis 202a. No specific limitation is made here. In this embodiment, a first fixed synchronous axis is fixedly connected to the base 100. The first fixed synchronous axis is cylindrical and has the first fixed synchronous axis 202a as its axis. The first synchronous rotating member 22a is sleeved on the first fixed synchronous axis and rotates around it.
[0055] Given that the first trajectory rotating component 21a adopts an arc-shaped groove and an arc-shaped rotating block, the larger the rotation angle of the first trajectory rotating component 21a, the smaller the overlap between the first trajectory rotating component 21a and the base 100 in the folded state, making it prone to yielding deformation of parts upon drop. In a scenario where the first trajectory rotating component 21a and the first sliding component 24a slide relative to each other using an arc-shaped groove, the rotation angle of the first trajectory rotating component 21a can be designed to be smaller. This increases the overlap between the first trajectory rotating component 21a and the base 100 in the folded state, improving structural stability.
[0056] Please see Figure 4 In some embodiments, a first connecting member 23a is provided between the first trajectory rotating member 21a and the first synchronous rotating member 22a. The first connecting member 23a includes a first guiding part 231a and a first mating part 232a. The first guiding part 231a is fixedly connected to one of the first trajectory rotating member 21a and the first synchronous rotating member 22a, and the first mating part 232a is connected to the other of the first trajectory rotating member 21a and the first synchronous rotating member 22a. The first mating part 232a and the first guiding part 231a are slidably and rotatably connected.
[0057] In this embodiment, the first connecting member 23a includes a first guide groove 2311a and a first slide rod 2321a that slide and rotate in cooperation. The first guide groove 2311a is fixedly disposed at one end of the first trajectory rotating member 21a facing the first synchronous rotating member 22a, and the first slide rod 2321a is disposed on the first synchronous rotating member 22a and inserted into the first guide groove 2311a. In this embodiment, the first slide rod 2321a is cylindrical, and the first slide rod 2321a can be fixedly connected to the first synchronous rotating member 22a or rotatably connected to the first synchronous rotating member 22a.
[0058] In some scenarios, the first guide groove 2311a can also be fixedly set at one end of the first synchronous rotating member 22a facing the first trajectory rotating member 21a, and the first slide rod 2321a can be fixedly or rotatably set on the first trajectory rotating member 21a and inserted into the first guide groove 2311a.
[0059] Similarly, a second connecting member 23b is provided between the second trajectory rotating member 21b and the second synchronous rotating member 22b. The second connecting member 23b includes a second guide portion 253b and a second mating portion. The second guide portion 253b is fixedly connected to one of the second trajectory rotating member 21b and the second synchronous rotating member 22b, and the second mating portion is connected to the other of the second trajectory rotating member 21b and the second synchronous rotating member 22b. The second mating portion and the second guide portion 253b are slidably and rotatably connected.
[0060] By setting the first connector 23a, the degree of coordination between the first trajectory rotating member 21a and the first synchronous rotating member 22a can be improved. In the folded state, the first connector 23a can also make the first trajectory rotating member 21a and the first synchronous rotating member 22a mutually restrain each other, so as to avoid the first trajectory rotating member 21a or the first synchronous rotating member 22a from undergoing large displacement instantaneously when subjected to a drop impact.
[0061] Please see Figure 1 In some embodiments, the rotating shaft device further includes a first support member 25a, which is rotatably connected to a first sliding member 24a and slidably and rotatably connected to at least one of a first trajectory rotating member 21a and a first synchronous rotating member 22a. When the first rotating mechanism 200a and the second rotating mechanism 200b rotate toward each other to a folded state, the distance from the end of the first support member 25a away from the base 100 to the second rotating mechanism 200b is less than the distance from the end of the first support member 25a close to the base 100 to the second rotating mechanism 200b.
[0062] Similarly, the second rotating mechanism 200b also includes a second support member 25b, a second trajectory rotating member 21b and a second synchronous rotating member 22b disposed between the second support member 25b and the base 100. The second support member 25b is rotatably connected to the second sliding member 24b, and is also slidably and rotatably connected to at least one of the second trajectory rotating member 21b and the second synchronous rotating member 22b. When the second rotating mechanism 200b rotates towards each other to a folded state, the distance from the end of the second support member 25b away from the base 100 to the first rotating mechanism 200a is less than the distance from the end of the second support member 25b closer to the base 100 to the first rotating mechanism 200a.
[0063] This embodiment does not limit the shape, structure, material, or other parameters of the first support member 25a and the second support member 25b. As long as the first support member 25a can support the flexible display screen 500 and rotatably connect to at least one of the first sliding member 24a and slidably and rotatably connect to at least one of the first trajectory rotating member 21a and the first synchronous rotating member 22a; and the second support member 25b can support the flexible display screen 500 and rotatably connect to the second sliding member 24b and slidably and rotatably connect to at least one of the second trajectory rotating member 21b and the second synchronous rotating member 22b.
[0064] The first support member 25a and the second support member 25b are mainly used to support the flexible display screen 500 in the rotating shaft device. The first support member 25a includes a first support portion 251a, and the second support member 25b includes a second support portion 251b. The first support portion 251a and the second support portion 251b can be fixedly connected to the flexible display screen 500. Both the first support portion 251a and the second support portion 251b are rectangular plate structures. As driven mechanisms of the rotating shaft device, the first support member 25a moves under the constraint of the movement trajectory of the first rotating mechanism 200a, and the second support member 25b moves under the constraint of the movement trajectory of the second rotating mechanism 200b, ultimately achieving the desired folding shape. In this embodiment, when the first rotating mechanism 200a and the second rotating mechanism 200b rotate towards each other to a folded state, the distance from the end of the first support member 25a away from the base 100 to the second rotating mechanism 200b is less than the distance from the end of the first support member 25a near the base 100 to the second rotating mechanism 200b, and the distance from the end of the second support member 25b away from the base 100 to the first rotating mechanism 200a is less than the distance from the end of the second support member 25b near the base 100 to the first rotating mechanism 200a. This can be understood as the distance between the ends of the first support member 25a and the second support member 25b away from the base 100 being less than the distance between the ends of the first support member 25a and the second support member 25b near the base 100. In other words, the first support member 25a and the second support member 25b form a V-shape with a smaller top and a larger bottom relative to the base 100. In the folded state, the first support member 25a, the second support member 25b and the base 100 form an accommodating space for the flexible display screen 500. The first support member 25a and the second support member 25b form a figure-eight shape with the smaller upper part and the larger lower part, which can avoid squeezing the flexible display screen 500 and make the flexible display screen 500 fold into a continuous teardrop shape.
[0065] Regarding the aforementioned first support member 25a being slidably and rotatably connected to at least one of the first trajectory rotating member 21a and the first synchronous rotating member 22a, this application describes three specific implementation methods: the first support member 25a is slidably and rotatably connected to the first trajectory rotating member 21a; the first support member 25a is slidably and rotatably connected to the first synchronous rotating member 22a; and the first support member 25a is simultaneously slidably and rotatably connected to both the first trajectory rotating member 21a and the first synchronous rotating member 22a.
[0066] Please see Figure 4 as well as Figure 11 , Figure 11 yes Figure 3 A schematic diagram of the structure of the first support member in the embodiment. In the first embodiment, the first support member 25a and the first trajectory rotating member 21a are connected by a first guide portion 253a and a first rolling portion 214a. The first guide portion 253a is provided in one of the first support member 25a and the first trajectory rotating member 21a, and the first rolling portion 214a is provided in the other of the first support member 25a and the first trajectory rotating member 21a.
[0067] In this embodiment, only the first guide portion 253a is provided on the first support member 25a, and the first rolling portion 214a is provided on the first track rotating member 21a for description. Exemplarily, the first guide portion 253a includes a first guide hole 2531a provided on the side of the first support portion 251a away from the folded object, and the first rolling portion 214a includes a first rolling shaft 2141a provided on the first track rotating member 21a. The first rolling shaft 2141a can be inserted into the first guide hole 2531a and slide and rotate relative to the first guide hole 2531a, thereby causing the first support member 25a to slide and rotate relative to the first track rotating member 21a.
[0068] Alternatively, the first rolling shaft 2141a can be fixedly connected to the first trajectory rotating member 21a, or it can be rotatably connected. For example, in this embodiment, the first rolling shaft 2141a is disposed on the first trajectory rotating member 21a, and the first rolling shaft 2141a is fixedly connected to the first trajectory rotating member 21a so that the first rolling shaft 2141a and the first trajectory rotating member 21a remain relatively stationary, thereby allowing the first guide hole 2531a to slide and rotate relative to the first rolling shaft 2141a.
[0069] Optionally, the first guide hole 2531a can be a through hole that penetrates the first guide portion 253a, or it can be a non-penetrating blind hole.
[0070] Optionally, the first guide hole 2531a can be an arc-shaped strip hole or a straight strip hole.
[0071] In the second embodiment, for example, the first support member 25a and the first synchronous rotating member 22a are connected by a first guide portion 253a and a first rolling portion 214a. The first guide portion 253a is provided in one of the first support member 25a and the first track rotating member 21a, and the first rolling portion 214a is provided in the other of the first support member 25a and the first track rotating member 21a.
[0072] The design of the first guide portion 253a and the first rolling portion 214a can be referred to the first embodiment that has been described in detail above, and will not be repeated here.
[0073] In the third embodiment, for example, the first support member 25a and the first trajectory rotating member 21a are connected by a first guide portion 253a and a first rolling portion 214a; the first support member 25a and the first synchronous rotating member 22a are connected by a first guide portion 253a and a first rolling portion 214a. That is, the third embodiment provided in this application simultaneously satisfies the first and second embodiments. Therefore, the third embodiment will not be described in detail here; please refer to the two embodiments described above.
[0074] Please see Figure 12 , Figure 12 yes Figure 3 A schematic diagram of the structure of the first support member and the first sliding member in the embodiment. In addition to being rotatably and slidably connected to the first trajectory rotating member 21a and / or the first synchronous rotating member 22a, the first support member 25a is also rotatably connected to the first sliding member 24a, that is, the end of the first support member 25a away from the base 100 is rotatably connected to the first sliding member 24a. Specifically, a first rotational guide portion 243a and a first rotational mating portion 254a are provided between the first support member 25a and the first sliding member 24a. The first rotational guide portion 243a is provided in one of the first support member 25a and the first sliding member 24a, and the first rotational mating portion 254a is provided in the other of the first support member 25a and the first trajectory rotating member 21a.
[0075] The first rotary guide portion 243a includes a first rotary groove 2431a, and the first rotary mating portion 254a includes a first rotary block 2541a. The first rotary groove 2431a is arc-shaped, and the first rotary block 2541a is in clearance fit with the first rotary groove 2431a and slides within the first rotary groove 2431a. In some scenarios, the first rotary block 2541a is disposed on the first support member 25a, and the first rotary groove 2431a is disposed on the first sliding member 24a; in other scenarios, the first rotary block 2541a is disposed on the first sliding member 24a, and the first rotary groove 2431a is disposed on the first support member 25a.
[0076] This embodiment is described only with the first rotary mating part 254a disposed on the first support member 25a. The first rotary mating part 254a is disposed on the side of the first support member 251a away from the flexible display screen 500. The first rotary mating part 254a and the first support member 251a can be an integral structure or a separate structure. When the first rotary mating part 254a and the first support member 251a are an integral structure, they are manufactured in one process. However, for ease of understanding, the first rotary mating part 254a and the first support member 251a are given different names. When the first rotary mating part 254a and the first support member 251a are separate structures, they are manufactured separately and then connected together by various methods. Alternatively, the first rotating engagement portion 254a and the first guide portion 253a are both disposed on the first support portion 251a, and the first rotating engagement portion 254a and the first rolling portion 214a are both located on the side of the first support portion 251a away from the flexible display screen 500.
[0077] The terms "first," "second," and "third" used in the embodiments of this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific posture (as shown in the figures). If the specific posture changes, the directional indication will also change accordingly. The terms "comprising" and "having," and any variations thereof, in the embodiments of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or components inherent to these processes, methods, products, or devices.
[0078] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0079] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.
Claims
1. A rotating shaft device, characterized in that, The device includes a base, a first rotating mechanism, and a second rotating mechanism. The first rotating mechanism and the second rotating mechanism are rotatably connected to opposite sides of the base to allow the rotating shaft device to have a folded state and an unfolded state. The first rotating mechanism includes a first trajectory rotating component, a first synchronous rotating component, and a first sliding component, wherein: The first trajectory rotating component is rotatably connected to the base around the first fixed rotation axis, and the first synchronous rotating component is rotatably connected to the base around the first fixed synchronous axis. The first fixed rotation axis is parallel to and does not coincide with the first fixed synchronous axis. The first sliding member is connected to the end of the first trajectory rotating member away from the base, and the first sliding member can slide relative to the first trajectory rotating member along a first direction; the first sliding member is connected to the end of the first synchronous rotating member away from the base, and the first sliding member can slide relative to the first synchronous rotating member along a third direction; the projection of the first direction and the third direction onto the first plane is not parallel, and the projection of the third direction onto the first plane is arc-shaped, the third direction being the direction in which the first sliding member moves toward or away from the base, and the first plane being a reference plane perpendicular to the first fixed rotation axis.
2. The rotating shaft device according to claim 1, characterized in that, The projection of the first direction onto the first plane is arc-shaped.
3. The rotating shaft device according to claim 1 or 2, characterized in that, A third sliding groove and a third slider are provided between the first sliding member and the first synchronous rotating member. The third sliding groove is provided between one of the first sliding member and the first synchronous rotating member, and the third slider is provided between the other of the first sliding member and the first synchronous rotating member.
4. The rotating shaft device according to claim 3, characterized in that, When the rotating shaft device is in the unfolded state, the axis of the third slide groove is located on the side of the third slide groove facing the base.
5. The rotating shaft device according to claim 1 or 2, characterized in that, A first groove and a first slider are provided between the first sliding member and the first track rotating member. The first groove is provided between one of the first sliding member and the first track rotating member, and the first slider is provided between the other of the first sliding member and the first track rotating member.
6. The rotating shaft device according to claim 5, characterized in that, When the rotating shaft device is in the unfolded state, the axis of the first slide is located on the side of the first slide facing the base.
7. The rotating shaft device according to claim 1 or 2, characterized in that, The second rotating mechanism includes a second trajectory rotating component, a second synchronous rotating component, and a second sliding component, wherein, The second trajectory rotating component is rotatably connected to the base around the second fixed rotation axis, and the second synchronous rotating component is rotatably connected to the base around the second fixed synchronous axis. The second fixed rotation axis is parallel to and does not coincide with the second fixed synchronous axis. The second sliding member is connected to the end of the second trajectory rotating member away from the base, and the second sliding member can slide relative to the second trajectory rotating member along a second direction; the second sliding member is connected to the end of the second synchronous rotating member away from the base, and the second sliding member can slide relative to the second synchronous rotating member along a fourth direction; the projection of the second direction and the fourth direction onto the first plane is not parallel, and the projection of the fourth direction onto the first plane is arc-shaped.
8. The rotating shaft device according to claim 7, characterized in that, The projection of the second direction onto the first plane is arc-shaped.
9. The rotating shaft device according to claim 1 or 2, characterized in that, The rotating shaft device further includes a first support member, which is rotatably connected to the first sliding member and slidably and rotatably connected to at least one of the first trajectory rotating member and the first synchronous rotating member. When the first rotating mechanism and the second rotating mechanism rotate towards each other to a folded state, the distance from the end of the first support member away from the base to the second rotating mechanism is less than the distance from the end of the first support member closer to the base to the second rotating mechanism.
10. The rotating shaft device according to claim 1 or 2, characterized in that, A first connecting member is provided between the first trajectory rotating member and the first synchronous rotating member. The first connecting member includes a first guiding part and a first mating part. The first guiding part is fixedly connected to one of the first trajectory rotating member and the first synchronous rotating member, and the first mating part is connected to the other of the first trajectory rotating member and the first synchronous rotating member. The first mating part and the first guiding part are slidably and rotatably connected.
11. The rotating shaft device according to claim 10, characterized in that, The first connecting member includes a first guide groove and a first slide rod that slide and rotate together. The first guide groove is fixedly disposed at one end of the first trajectory rotating member facing the first synchronous rotating member, and the first slide rod is disposed on the first synchronous rotating member and inserted into the first guide groove.
12. An electronic device, characterized in that, It includes a first housing, a second housing, a flexible display screen, and a rotating shaft device as described in any one of claims 1 to 11, wherein: The first housing is connected to the first rotating mechanism, the second housing is connected to the second rotating mechanism, and the flexible display screen continuously covers the first housing, the base, and the second housing.