Rotating shaft structure and folding electronic device

Abstract

This application provides a hinge structure and a foldable electronic device. A first structural component has a fixing part with a through hole, and a second structural component has a sliding part with a groove. The opening of a first sub-through hole within the through hole is smaller than the opening of a second sub-through hole. The first annular sidewall of the first sub-through hole and the second annular sidewall of the second sub-through hole are connected by an annular connecting wall. The first annular sidewall is partially recessed to form a groove. The pin includes a first part and a second part, the size of which is larger than the size of the second part and also larger than the size of the first sub-through hole. A first limiting post is provided on the sidewall of the second part. One part of the second part is located within the through hole, and the other part is located within the groove. The distance from the surface of the fixing part adjacent to the first part to the annular connecting wall is greater than the distance from the first limiting post to the first part. By using an interference fit to clamp the pin, not only are problems such as inability to disassemble after welding and the presence of welding slag and foreign matter effectively improved, but costs and process difficulty are also effectively reduced.

Description

Technical Field

[0001] This application relates to the field of electronic product technology, and in particular to a hinge structure and a foldable electronic device. Background Technology

[0002] With the continuous development of display technology, foldable electronic devices (such as foldable phones) are gradually becoming a development trend for future mobile electronic products. When unfolded, foldable electronic devices offer a larger display area, enhancing the visual experience; when folded, they achieve a smaller size, making them easy for users to carry. Therefore, they are gaining increasing popularity among users.

[0003] The structure that enables the unfolding or folding of foldable electronic devices is a hinge structure. The hinge structure has numerous parts and is complex; some parts require pins to connect and generate rotational movement (such as the main swing arm and door panel being connected by a pin). Due to the size limitations of foldable electronic devices (e.g., their thinness), the pins are generally small, making pin assembly difficult and prone to problems such as insecure fixing leading to pin detachment. Summary of the Invention

[0004] To address the aforementioned technical problems, this application provides a hinge structure and a foldable electronic device, which solves the problems of difficult pin assembly and the tendency for the pin to come loose due to insecure fixing.

[0005] In a first aspect, this application provides a rotating shaft structure, comprising: a first structural member, a second structural member, and a pin; the first structural member has a fixing portion, and the second structural member has a sliding portion; the fixing portion has a through hole, and the sliding portion has a groove; the through hole includes a first sub-through hole and a second sub-through hole that communicate with each other, the opening of the first sub-through hole being smaller than the opening of the second sub-through hole; the first sub-through hole includes a first annular sidewall, the second sub-through hole includes a second annular sidewall, and the first annular sidewall and the second annular sidewall are connected by an annular connecting wall; the first annular sidewall is partially recessed to form at least one groove, and the groove communicates with the second sub-through hole; the pin includes... The first part and the second part are respectively, the first part having a larger dimension on the reference surface than the second part on the reference surface, and also larger than the first sub-through hole on the reference surface, wherein the extension direction of the pin is perpendicular to the reference surface; at least one first limiting post is provided on the side wall of the second part; a part of the second part is located in the through hole, and another part of the second part is located in the slide groove; along the extension direction of the pin, the first part is located on the side of the fixing part away from the sliding part; the first limiting post is located in the second sub-through hole and is adjacent to the annular connecting wall; the distance from the surface of the fixing part adjacent to the first part to the annular connecting wall is greater than the distance from the first limiting post to the first part.

[0006] A groove is provided in the first through hole, allowing the first limiting post on the pin to enter the through hole of the fixing part through the groove. The pin is secured by an interference fit (i.e., the distance from the surface of the fixing part that is in close contact with the first part to the annular connecting wall is greater than the distance from the first limiting post to the first part). This design not only effectively improves the problems of inability to disassemble after welding and the presence of welding slag and foreign matter, as well as the problems of easy detachment after adhesive application leading to failure of the flexible display screen, but also effectively reduces costs and process difficulty.

[0007] For example, the opening of the first sub-through hole is smaller than the opening of the second sub-through hole, which means that the area of ​​the projection of the first sub-through hole on the reference surface is smaller than the area of ​​the projection of the second sub-through hole on the reference surface.

[0008] For example, the shape of the projection of the groove onto the reference surface can be either arc-shaped or circular. The shape of the projection of the groove onto the reference surface can be determined according to the connection relationship between the first structural member and the second structural member. For example, when the first structural member and the second structural member are slidably connected, the shape of the projection of the groove onto the reference surface can be arc-shaped; when the first structural member and the second structural member are rotatably connected, the shape of the projection of the groove onto the reference surface can be circular.

[0009] For example, the extension direction of the pin can be the Y-axis direction as described below, and the reference surface can be a plane composed of the X-axis and Z-axis.

[0010] For example, the surface of the fixing part that is adjacent to the first part is the entry surface as described below.

[0011] According to the first aspect, the chute includes a first sub-chute and a second sub-chute that are interconnected, the opening of the first sub-chute being smaller than the opening of the second sub-chute; at least one second limiting post is provided on the side wall of the second part, the second limiting post being located in the second sub-chute.

[0012] The second sub-groove can limit the second limiting post in the Y-axis direction. In this way, both limiting posts can limit the pin in the Y-axis direction, meaning that not only does the first limiting post bear a portion of the force in the Y-axis direction, but the second limiting post also bears a portion of the force in the Y-axis direction, resulting in better pin strength.

[0013] According to the first aspect, or any implementation of the first aspect above, the projection of the first limiting post on the reference plane does not overlap with the projection of the second limiting post on the reference plane.

[0014] This design facilitates the placement of the second limiting post within the second sub-slide groove, preventing the second limiting post from being unable to be placed within the second sub-slide groove when the first limiting post cannot rotate too much due to interference fit.

[0015] According to the first aspect, or any implementation of the first aspect above, the line segment connecting the center of the projection of the first limiting post on the reference plane and the center of the projection of the second part on the reference plane is the first line segment, and the line segment connecting the center of the projection of the second limiting post on the reference plane and the center of the projection of the second part on the reference plane is the first line segment. The included angle λ between the first line segment and the second line segment satisfies: 45°≤λ≤135°.

[0016] This design not only prevents the second limiting post from being unable to be positioned in the second sub-slide groove when the first limiting post cannot rotate too much due to interference fit, but also ensures that the first and second limiting posts are subjected to balanced forces. That is, the first and second limiting posts limit the pin in the Y-axis direction at different positions, further improving the strength of the pin.

[0017] For example, the included angle λ between the first line segment and the second line segment includes, but is not limited to, 45°, 60°, 90°, 100°, 105°, 110°, 120°, 130° or 135°, etc.

[0018] According to the first aspect, or any implementation of the first aspect above, the connection between the sidewall of the groove and the annular connecting wall is an inclined surface or a curved surface.

[0019] This design gradually increases the distance between the fixed part and the surface adjacent to the first part (i.e., the entry surface) and the annular connecting wall, making it easier to clamp the pin and thus achieving a better interference fit.

[0020] According to the first aspect, or any implementation of the first aspect above, a positioning structure is provided on the surface of the first part away from the fixed part along the extension direction of the pin shaft, for determining the position of the first limiting post.

[0021] In this way, when assembling the pin, the workers can determine the position of the limiting post through the positioning structure.

[0022] According to the first aspect, or any implementation of the first aspect above, the surface of the first part facing away from the fixing part is partially recessed to form a positioning structure, and the extending direction of the positioning structure is the same as the extending direction of the first limiting post.

[0023] This setup eliminates the need for a separate positioning structure, simplifying the pin's structure.

[0024] According to the first aspect, or any implementation of the first aspect above, a second limiting post is provided on the side wall of the second part; a positioning structure is formed by a partial recess on the surface of the first part away from the fixing part, and the extension direction of the positioning structure is the same as the extension direction of the second limiting post.

[0025] This setup eliminates the need for a separate positioning structure, simplifying the pin's structure.

[0026] According to the first aspect, or any implementation of the first aspect above, the surface of the first structural member is recessed to form a strip-shaped receiving cavity, and the fixing part is disposed in the receiving cavity.

[0027] This design facilitates a thinner and lighter design for the pivot structure, avoiding increased thickness due to the addition of a fixing part. Furthermore, the strip-shaped receiving cavity facilitates the assembly of the pin and ensures the strength of the main swing arm, preventing the cavity from affecting the strength of the first structural component.

[0028] According to the first aspect, or any implementation of the first aspect above, the first structural component is a swing arm with a pivot structure, and the second structural component is a door panel with a pivot structure.

[0029] The sliding and rotating connection between the swing arm and the door panel is achieved through the aforementioned pin, fixing part and sliding part. This not only effectively improves the problems of the swing arm and pin being unable to be disassembled after being fixed by welding and the presence of welding slag and foreign matter, as well as the problem of the flexible display screen failing due to easy detachment after glue application, but also effectively reduces costs and process difficulty.

[0030] For example, the swing arm can be a main swing arm or a secondary swing arm, and this application does not limit it in this way.

[0031] According to the first aspect, or any implementation of the first aspect above, the first structural component is a swing arm with a rotating shaft structure, and the second structural component is a connector with a rotating shaft structure.

[0032] The sliding and rotating connection between the swing arm and the connector is achieved through the aforementioned pin, fixing part and sliding part. This not only effectively improves the problems of the swing arm and connector being unable to be disassembled after being fixed by welding and the presence of welding slag and foreign matter, as well as the problem of the flexible display screen failing due to easy detachment after glue application, but also effectively reduces costs and process difficulty.

[0033] For example, the swing arm can be a main swing arm or a secondary swing arm, and this application does not limit it in this way.

[0034] According to the first aspect, or any implementation of the first aspect above, the shape of the first limiting post includes, but is not limited to, a cuboid, a cube, a cylinder, or a triangular prism, etc. The shape of the second limiting post includes, but is not limited to, a cuboid, a cube, a cylinder, or a triangular prism, etc.

[0035] Secondly, embodiments of this application provide a foldable electronic device, which includes: a hinge structure according to the first aspect and any implementation thereof.

[0036] The second aspect and any implementation thereof correspond to the first aspect and any implementation thereof, respectively. The technical effects of the second aspect and any implementation thereof are similar to those of the first aspect and any implementation thereof, and will not be repeated here.

[0037] According to the second aspect, the foldable electronic device also includes a flexible display screen and at least two bodies; at least one hinge structure is provided between two adjacent bodies; and a support mechanism for the bodies and hinge structure is used to support the flexible display screen.

[0038] For example, foldable electronic devices may include foldable phones or foldable tablets. Attached Figure Description

[0039] Figure 1 This is a schematic diagram of the structure of a foldable electronic device provided in an embodiment of this application;

[0040] Figure 2 This is a schematic diagram of the structure of another foldable electronic device provided in an embodiment of this application;

[0041] Figure 3a This is a schematic diagram of a foldable phone when folded.

[0042] Figure 3b This is a schematic diagram of a foldable phone when folded.

[0043] Figure 4 This is a partial structural diagram of a rotating shaft structure provided in an embodiment of this application;

[0044] Figure 5 for Figure 1 A cross-sectional view of the foldable electronic device along the AA' direction;

[0045] Figure 6 A positional relationship diagram between a main swing arm and a first door panel from a certain perspective is provided for an embodiment of this application;

[0046] Figure 7 A diagram showing the positional relationship between a main swing arm and a first door panel from another perspective, provided as an embodiment of this application.

[0047] Figure 8 A split view of a main swing arm, a pin shaft, and a first door panel provided for an embodiment of this application;

[0048] Figure 9 A diagram showing the positional relationship between a main swing arm and a first door panel from a different perspective, provided as an embodiment of this application.

[0049] Figure 10A split view of a main swing arm, a pin shaft, and a first door panel provided for an embodiment of this application;

[0050] Figure 11 This is a schematic diagram of the structure of a pin from one perspective, provided in an embodiment of this application.

[0051] Figure 12 A diagram showing the positional relationship between the first limiting post and the second limiting post provided in this application embodiment;

[0052] Figure 13 This is a schematic diagram of the structure of a main swing arm from one perspective, provided in an embodiment of this application.

[0053] Figure 14 for Figure 13 Enlarged view of the BB region in the main swing arm shown;

[0054] Figure 15 A structural schematic diagram of a main swing arm from another perspective, provided for an embodiment of this application;

[0055] Figure 16 for Figure 15 An enlarged view of the CC region in the main swing arm shown;

[0056] Figure 17 A diagram showing the size relationship between the first sub-through hole and the second sub-through hole within the first through hole provided in an embodiment of this application;

[0057] Figure 18 This is a structural schematic diagram of a door panel from one perspective, provided as an embodiment of this application.

[0058] Figure 19 This is a structural schematic diagram of a door panel from another perspective, provided as an embodiment of this application.

[0059] Figure 20 A positional relationship diagram of a pin, a fixed part, and a sliding part provided for an embodiment of this application;

[0060] Figure 21 A positional relationship diagram of a second limiting post, a first sub-slide groove, and a second sub-slide groove provided in an embodiment of this application;

[0061] Figure 22 This is a structural schematic diagram of a pin shaft from another perspective, provided as an embodiment of this application.

[0062] Figure 23 This is a structural schematic diagram of a pin shaft from another perspective, provided as an embodiment of this application. Detailed Implementation

[0063] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0064] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone.

[0065] The terms "first" and "second," etc., used in the specification and claims of this application are used to distinguish different objects, not to describe a specific order of objects. For example, "first target object" and "second target object," etc., are used to distinguish different target objects, not to describe a specific order of target objects.

[0066] In the embodiments of this application, the terms "exemplary" or "for example" are used to indicate that something is an example, illustration, or description. Any embodiment or design that is described as "exemplary" or "for example" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or design. Specifically, the use of the terms "exemplary" or "for example" is intended to present the relevant concepts in a specific manner.

[0067] In the description of the embodiments in this application, unless otherwise stated, "multiple" means two or more. For example, multiple processing units means two or more processing units; multiple systems means two or more systems.

[0068] This application provides a foldable electronic device. The foldable electronic device provided in this application can be a mobile phone, tablet computer, personal digital assistant (PDA), in-vehicle computer, television, smart wearable device, smart home device, or other electronic device with folding functionality. This application does not limit the specific form of the aforementioned foldable electronic device. For ease of explanation, the following description uses a foldable mobile phone as an example.

[0069] See Figure 1 , Figure 1 This is a schematic diagram of the structure of a foldable electronic device provided in an embodiment of this application. Figure 1 As shown, the foldable phone 100 includes a flexible display screen (also known as a foldable screen or flexible display) 10.

[0070] The flexible display screen 10 is a flexible display screen. The flexible display screen 10 may include an organic light-emitting diode (OLED) display screen. OLED displays do not require a backlight module, and the substrate in the OLED display screen can be made of a flexible resin material, such as polyethylene terephthalate (PET), giving the OLED display screen a bendable characteristic. Of course, the type of flexible display screen 10 includes, but is not limited to, OLED displays; any display screen that can be bent is within the scope of protection of this application, such as a liquid crystal display (LCD) screen, an LED display screen (e.g., including Micro-LED displays, Mini-LED displays), etc.

[0071] It should be noted that, in order to clearly describe the subsequent structural features and their positional relationships, the positional relationships of the structures within the foldable phone 100 are defined using the X-axis, Y-axis, and Z-axis directions. Specifically, the X-axis direction represents the width of the foldable phone 100 when unfolded, the Y-axis direction represents the length of the foldable phone 100 when unfolded, and the Z-axis direction represents the thickness of the foldable phone 100 when unfolded.

[0072] See also Figure 1 The foldable phone 100 also includes a first body 20, a second body 30, and a hinge structure 40. Along the X-axis, the first body 20 and the second body 30 are located on either side of the hinge structure 40, and the hinge structure 40 is connected to both the first body 20 and the second body 30. The first body 20, the hinge structure 40, and the second body 30 can support the flexible display screen 10. The first body 20 and the second body 30 can rotate around the hinge structure 40, causing the flexible display screen 10 to be in a folded or unfolded state, thus enabling the foldable phone 100 to be in a folded or unfolded state.

[0073] It is understandable that the foldable phone 100 has two states during use: a folded state and an unfolded state. In the unfolded state, the first body 20 and the second body 30 are roughly on the same plane, making the flexible display screen 10 roughly flat. Users can operate the flexible display screen 10, and the flexible display screen 10 can display images or videos, achieving a large-screen display and improving the user's viewing experience. When the foldable phone 100 is in the unfolded state, the first body 20 and the second body 30 can rotate towards each other (i.e., relative rotation where the first body 20 and the second body 30 move closer to each other), thereby causing the hinge structure 40 to fold. During the folding process, the ends of the first body 20 and the second body 30 away from the hinge structure 40 move closer to each other until they touch, at which point the foldable phone 100 is in the folded state. In this folded state, the foldable phone 100 is easy to store and carry. Furthermore, when the foldable phone 100 is in the folded state, the first body 20 and the second body 30 can rotate (in the opposite direction to the rotation direction when folded), thereby causing the hinge structure 40 to unfold, so that the foldable phone 100 is in the unfolded state. Therefore, in this application, the hinge structure 40 is used to realize the folding and unfolding of the foldable phone 100.

[0074] It should be noted that the foldable phone 100 can fold at multiple locations. Accordingly, the foldable phone 100 may include multiple hinge structures 40 and multiple bodies. For example, it may include two hinge structures 40 and three bodies, with adjacent bodies connected by a hinge structure 40. In this way, the foldable phone 100 has two folding positions. Thus, the structural mechanism includes at least one hinge structure 40 and at least two bodies, with adjacent bodies connected by a hinge structure 40. For ease of explanation, this application embodiment uses a foldable phone 100 including one hinge structure 40 and two bodies (i.e., the first body 20 and the second body 30) as an example for illustration.

[0075] It should also be noted that, Figure 1 This description uses a foldable phone 100 folded longitudinally (i.e., along the Y-axis), meaning the foldable phone 100 forms two screens when folded, as an example, but it does not constitute a limitation of this application. In other optional embodiments of this application, such as Figure 2 As shown, the foldable phone 100 can also be folded horizontally (i.e., along the X-axis), meaning that the foldable phone 100 forms two screens, one above the other, when folded. The following description uses the foldable phone 100 folding vertically as an example.

[0076] Figure 1 The image shown is a schematic diagram of a foldable phone unfolded. Figure 3a and 3b The diagram shown illustrates a foldable phone when folded. Figure 3aIn the case of a foldable phone 100 folded, it can face the light-emitting direction of the flexible display screen 10. Figure 3a (As indicated by the middle arrow) Folding means that the first body 20 and the second body 30 rotate around the pivot structure 40 in the same direction as the light emission direction of the flexible display screen 10. That is, when the foldable phone 100 is in a folded state, the flexible display screen 10 is folded inward. In this case, the foldable phone 100 can also be called an inward folding phone. Figure 3b In the case of the foldable phone 100, when it is folded, it can emit light in a direction away from the flexible display screen 10. Figure 3b (As indicated by the middle arrow) Folding means that the direction in which the first body 20 and the second body 30 rotate around the pivot structure 40 is opposite to the direction of light emission from the flexible display screen 10. In other words, when the foldable phone 100 is in a folded state, the flexible display screen 10 is exposed on the outside. In this case, the foldable phone 100 can also be called an outward folding phone.

[0077] It should be noted that the embodiments of this application use an inward-folding folding phone 100 as an example for illustration.

[0078] See also Figure 1 The flexible display screen 10 can be divided into different parts. When folded, the part of the flexible display screen 10 that bends is the bending display segment 12. Along the X-axis, the parts on both sides of the bending display segment 12 in the flexible display screen 10 are the first flat display segment 11 and the second flat display segment 13, respectively. During the process of the foldable phone 100 changing from the unfolded state to the folded state, the angle between the plane where the first flat display segment 11 is located and the plane where the second flat display segment 13 is located changes as the bending display segment 12 bends, for example, from 180° to 0°.

[0079] The first fuselage 20 includes a first outer shell 21 and a first mid-frame 22. The second fuselage 30 includes a second outer shell 31 and a second mid-frame 32.

[0080] The first outer casing 21 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display screen for display purposes, and this embodiment of the application does not limit this. The second outer casing 31 can be the back cover (also called the battery cover) of the foldable mobile phone 100; it can also be a display screen for display purposes, and this embodiment of the application does not limit this.

[0081] The first middle frame 22 includes a first outer component (the structure exposed on the outside of the first middle frame 22) 221 and a first support component (not shown in the figure) located between the first flat display segment 11 and the first outer shell 21 of the flexible display screen 10. The first outer component 221 is fixedly connected to the first support component. The first outer component 221 and the first support component can be integrally formed or separately formed and then fixed together by welding or bonding. The second middle frame 32 includes a second outer component (the structure exposed on the outside of the second middle frame 32) 321 and a second support component (not shown in the figure) located between the second flat display segment 13 and the second outer shell 31 of the flexible display screen 10. The second outer component 321 is fixedly connected to the second support component. The second outer component 321 and the second support component can be integrally formed or separately formed and then fixed together by welding or bonding.

[0082] The first flat display segment 11, the first outer appearance component 221, and the first outer shell 21 of the flexible display screen 10 form a first complete cavity. The second flat display segment 13, the second outer appearance component 321, and the second outer shell 31 of the flexible display screen 10 form a second complete cavity. The first and second complete cavities contain structures such as printed circuit boards, flexible circuit boards, functional devices, and batteries (not shown in the figures). The functional devices include, for example, a processing module and a power management module. The flexible display screen 10 and some structures within the complete cavity are supported by the first support member of the first middle frame 22 and the second support member of the second middle frame 32. For example, the flexible display screen 10 can be adhered to the first support member of the first middle frame 22 and the second support member of the second middle frame 32 using adhesive (not shown in the figures). The first support member supports the first flat display segment 11 of the flexible display screen 10, and the second support member supports the second flat display segment 13 of the flexible display screen 10.

[0083] See Figure 4 , Figure 4 This is a partial exploded view of a rotating shaft structure provided in an embodiment of this application. The rotating shaft structure 40 includes a shaft cover 41, a rotating mechanism 42, and a support mechanism 43. In some embodiments, the rotating shaft structure 40 may further include a synchronization mechanism and a damping mechanism, etc., to more clearly illustrate the inventive points of this application. Figure 4 The synchronization mechanism and damping mechanism are not shown in the figure.

[0084] The hinge cover 41 serves as the mounting base in the hinge structure 40, providing a mounting base for other mechanisms within the hinge structure 40 (such as the rotating mechanism 42). The hinge cover 41 can be located between the first body 20 and the second body 30. When the two bodies rotate relative to the hinge structure 40, the position of the hinge cover 41 remains relatively fixed. In some examples, when the first body 20 and the second body 30 are in the unfolded state, they can cover the hinge cover 41, making it invisible. When the first body 20 and the second body 30 are in the folded state, at least a portion of the hinge cover 41 can be exposed and visible, and the hinge cover 41 can also cover other mechanisms within the hinge structure 40, resulting in a neat and aesthetically pleasing appearance for the foldable phone 100. In some examples, the hinge cover 41 can be a strip-shaped structure extending in the Y-axis direction.

[0085] The number of rotating mechanisms 42 can be multiple, and they can be evenly distributed on the shaft cover 41 along the Y-axis. For example, there are three rotating mechanisms 42, with two located at both ends of the shaft cover 41 and the third located in the middle of the shaft cover 41. Figure 4 Only one rotating mechanism 42 is shown in the figure.

[0086] The rotating mechanism 42 includes a rotating base 421 and a rotating assembly.

[0087] Combination Figure 5 , Figure 5 for Figure 1 In the cross-sectional view along the AA' direction of the foldable electronic device, along the Z-axis, the rotating base 421 is located on one side of the shaft cover 41, for example, the rotating base 421 is disposed on the side of the shaft cover 41 facing the flexible display screen 10. Exemplarily, the shaft cover 41 is provided with a fixing hole (not shown in the figure), and the rotating base 421 is provided with a locking hole (not shown in the figure). A screw passes through the locking hole of the rotating base 421 and extends into the fixing hole of the shaft cover 41 to lock the rotating base 421 onto the shaft cover 41, thus achieving a fixed connection between the shaft cover 41 and the rotating base 421. Of course, the fixed connection method between the shaft cover 41 and the rotating base 421 is not limited to this; for example, adhesive or other methods can also be used to fix the shaft cover 41 and the rotating base 421 together. The rotating base 421 can cooperate with a rotating assembly to realize the rotation of the rotating assembly and constrain the rotation trajectory of the rotating assembly.

[0088] The rotating assembly includes a main swing arm assembly. The main swing arm assembly includes two main swing arms 422 disposed on both sides of the shaft cover 41 along the X-axis direction.

[0089] The rotating assembly also includes two connectors (also called wedges, etc.) 423 disposed on both sides of the shaft cover 41 along the X-axis direction. The two connectors 423 are a first connector 4231 and a second connector 4232, respectively. The first connector 4231 is fixedly connected to the first body 20, and the second connector 4232 is fixedly connected to the second body 30. For example, both the first connector 4231 and the second connector 4232 have at least one connecting hole (not shown in the figure). The first connector 4231 is fixedly connected to the first support member of the first middle frame 22 through its connecting hole to achieve a fixed connection with the first body 20; the second connector 4232 is fixedly connected to the first support member of the second middle frame 32 through its connecting hole to achieve a fixed connection with the second body 30. That is, the rotating shaft structure 40 is connected to the first body 20 and the second body 30 through the two connectors 423, so that the first body 20 and the second body 30 can be folded or unfolded through the rotating shaft structure 40.

[0090] See also Figure 5 The main swing arm 422 includes a first rotating part 4221, a second rotating part 4222, and a connecting part 4223 located between the first rotating part 4221 and the second rotating part 4222. Along the X-axis, the first rotating part 4221, the connecting part 4223, and the second rotating part 4222 are arranged sequentially and fixedly connected. The cross-sectional shape of the first rotating part 4221 is, for example, arc-shaped or approximately arc-shaped, meaning that the projection of the first rotating part 4221 onto the plane formed by the X-axis and Z-axis is arc-shaped or approximately arc-shaped. Correspondingly, the rotating base 421 is provided with a base groove 4211 adapted to the first rotating part 4221. At least a portion of the first rotating part 4221 is located in the base groove 4211, allowing for rotatable connection between the first rotating part 4221 and the rotating base 421, thereby enabling the main swing arm 422 to rotate relative to the rotating base 421 when the position of the rotating base 421 remains unchanged.

[0091] The second rotating part 4222 has a rotating hole 42221. Correspondingly, the connecting member 423 has a fixing hole (not shown in the figure). A fixing shaft 44 is inserted into the rotating hole 42221 of one of the main swing arms 422 and the fixing hole of the first connecting member 4231. The fixing shaft 44 is fixed in the rotating hole 42221 of one of the main swing arms 422, and the fixing hole of the first connecting member 4231 can rotate relative to the fixing shaft. Another fixing shaft 44 is inserted into the rotating hole 42221 of the other main swing arm 422 and the fixing hole of the second connecting member 4232. The fixing shaft 44 is fixed in the rotating hole 42221 of the other main swing arm 422, and the fixing hole of the second connecting member 4232 can rotate relative to the fixing shaft. In this way, the main swing arms 422 and the connecting members are rotated.

[0092] In other words, one main swing arm 422 is rotatably connected to the rotating base 421 and the first connecting member 4231 respectively, and the other main swing arm 422 is rotatably connected to the rotating base 421 and the second connecting member 4232 respectively. In this way, when the position of the rotating base 421 remains unchanged, the two connecting members (fixedly connected to their corresponding fuselage) 423 can rotate relative to the rotating base 421, thereby realizing the opening and closing of the first fuselage 20 and the second fuselage 30.

[0093] In some embodiments, the rotating assembly includes a secondary swing arm assembly. The secondary swing arm assembly includes two secondary swing arms disposed on both sides of the shaft cover 41 along the X-axis direction. The specific structure of the secondary swing arms can be found in the prior art, and will not be described again in the embodiments of this application.

[0094] See also Figure 4 and Figure 5 The support mechanism 43 includes two door panels, namely a first door panel 431 and a second door panel 432. The first door panel 431 and the second door panel 432 are located on both sides of the shaft cover 41. When the foldable mobile phone 100 is in a flattened state, the first door panel 431 and the second door panel 432 can support the flexible display screen 10.

[0095] Combination Figures 6-8 , Figure 6 This application provides a diagram showing the positional relationship between a main swing arm and a first door panel from a certain perspective, as illustrated in an embodiment of the present application. Figure 7 This application provides a diagram showing the positional relationship between a main swing arm and a first door panel from another perspective, as provided in an embodiment of the present application. Figure 8 This is an exploded view of a main swing arm, a pin, and a first door panel provided for an embodiment of this application. The diagram is designed to more clearly illustrate the connection relationship between the main swing arm and the door panel. Figures 6-8The structure of the middle door panel is only partially shown, not the entire structure. The corresponding figures below are the same, and will not be repeated hereafter. Along the Z-axis, the first door panel 431 is located on the side of a main swing arm 422 facing the flexible display screen 10. A sliding part 4311 is provided on the surface of the first door panel 431 facing away from the flexible display screen 10. Along the extension direction of the shaft cover, i.e., the Y-axis, the sliding part 4311 includes two opposing sidewalls 4312, and a door panel groove 43111 is provided on the sliding part 4311 that penetrates the two sidewalls 4312 (of course, the door panel groove 43111 can also penetrate only one sidewall 4312). The door panel groove 43111 can be an arc-shaped groove, that is, the projection of the door panel groove 43111 on the plane formed by the X-axis and Z-axis is arc-shaped. Along the Z-axis, a fixing part 42231 is provided on the surface of the connecting part 4223 of a main swing arm 422 facing away from the first door panel 431. Along the extension direction of the shaft cover, i.e., the Y-axis direction, the fixing part 42231 includes an entry surface 42232 and a connecting surface 42235 facing away from each other. The entry surface 42232 is located on the side of the connecting surface 42235 opposite to the side wall 4312 of the sliding part 4311. The fixing part 42231 of the main swing arm 422 has a first through hole 42233 penetrating the entry surface 42232 and the connecting surface 42235, and a second through hole 42234 communicating with the first through hole 42233. A portion of a pin 45 is fixed in the first through hole 42233 (the pin 45 is fixedly connected to the fixing part 42231 through the second through hole 42234), and the other portion protrudes through the first through hole 42233. The exposed portion of the pin 45 can be located within the door panel slide groove 43111 of the first door panel 431, and can slide and rotate within the door panel slide groove 43111 to achieve a sliding and rotating connection between the first door panel 431 and a main swing arm 422.

[0096] Similarly, along the Z-axis, the second door panel 432 is located on the side of the other main swing arm 422 facing the flexible display screen 10. A sliding portion 4311 is provided on the surface of the second door panel 432 facing away from the flexible display screen 10. Along the extension direction of the shaft cover, i.e., the Y-axis, the sliding portion 4311 includes two opposing sidewalls 4312, and a door panel groove 43111 is provided on the sliding portion 4311, penetrating both sidewalls 4312 (of course, the door panel groove 43111 can also penetrate only one sidewall 4312). The door panel groove 43111 can be an arc-shaped groove, that is, the projection of the door panel groove 43111 onto the plane formed by the X-axis and Z-axis is arc-shaped. Along the Z-axis, a fixing portion 42231 is provided on the surface of the connecting portion 4223 of the other main swing arm 422 facing away from the second door panel 432. Along the extension direction of the shaft cover, i.e., the Y-axis direction, the fixing part 42231 includes an entry surface 42232 and a connecting surface 42235 facing away from each other. The entry surface 42232 is located on the side of the connecting surface 42235 opposite to the side wall 4312 of the sliding part 4311. The fixing part 42231 of the main swing arm 422 has a first through hole 42233 penetrating the entry surface 42232 and the connecting surface 42235, and a second through hole 42234 communicating with the first through hole 42233. A portion of a pin 45 is fixed in the first through hole 42233 (the pin 45 is fixedly connected to the fixing part 42231 through the second through hole 42234), and the other portion protrudes through the first through hole 42233. The exposed portion of the pin 45 can be located within the door panel slide groove 43111 of the second door panel 432, and can slide and rotate within the door panel slide groove 43111 to achieve sliding and rotating connection between the second door panel 432 and the other main swing arm 422.

[0097] In this way, the door panel movement trajectory can be controlled by the cooperation of the door panel slide groove, the pin on the main swing arm, the connecting parts and the auxiliary swing arm (not shown in the figure), etc., and the structure is simple.

[0098] The pin 45 and the fixing part 42231 are usually fixedly connected together through the second through hole 42234 by laser welding (the pin 45 and the fixing part 42231 are directly welded together by laser welding at the second through hole 42234 to achieve a fixed connection between the pin 45 and the fixing part 42231) or by applying glue (the pin 45 and the fixing part 42231 are directly glued together by applying glue at the second through hole 42234 to achieve a fixed connection between the pin 45 and the fixing part 42231).

[0099] However, research has revealed that directly welding the pin 45 to the fixing part 42231 using laser welding to achieve a fixed connection between the pin 45 and the fixing part 42231 is difficult to disassemble and assemble, and the production assembly process is not easy to repair, leading to increased costs. Furthermore, welding slag and other foreign matter are prone to appear after welding, the height of the slag is difficult to control, and the slag is prone to falling off, potentially damaging the flexible display screen 10 and causing it to fail. In addition, the welding process is complex, has high production costs, and is difficult to control. Directly fixing the pin 45 to the fixing part 42231 using adhesive dispensing also presents problems. After adhesive dispensing, excess adhesive is prone to falling off, which may also cause the flexible display screen 10 to fail. Moreover, adhesive dispensing requires space, placing higher demands on the hinge structure space, making it difficult to meet the requirements for a thinner and lighter folding machine.

[0100] Based on this, the present application provides a technical solution that not only effectively improves the problems of being unable to disassemble after welding and the presence of welding slag and foreign matter, but also does not affect the flexible display screen 10 and does not occupy a large space, and can also effectively reduce the cost and process difficulty of the hinge structure.

[0101] The technical solutions provided in the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0102] See Figures 9-11 , Figure 9 This application provides another example of a positional relationship diagram between a main swing arm and a first door panel from a specific perspective. Figure 10 This is an exploded view of a main swing arm, a pivot pin, and a first door panel provided in an embodiment of this application. Figure 11 This is a schematic diagram of the structure of a pin from one perspective, provided as an embodiment of this application, and is consistent with the above-described embodiment ( Figures 6-8The difference from the corresponding embodiment is that, along the Y-axis, the pin 45 includes a first part 451 and a second part 452 fixedly connected. The size of the projection of the first part 451 onto the plane formed by the X-axis and Z-axis is larger than the size of the projection of the second part 452 onto the plane formed by the X-axis and Z-axis. For example, both the first part 451 and the second part 452 can be cylindrical, and the diameter of the projection of the first part 451 onto the plane formed by the X-axis and Z-axis is larger than the diameter of the projection of the second part 452 onto the plane formed by the X-axis and Z-axis. Along the Y-axis, the first part 451 includes a first surface 4511 and a second surface 4512 facing away from each other, and also includes an annular side surface 4513 connecting the first surface 4511 and the second surface 4512. Along the Y-axis, the second part 452 includes a first surface 4521 and a second surface 4522 facing away from each other, and also includes an annular side surface 4523 connecting the first surface 4521 and the second surface 4522. The second surface 4512 of the first portion 451 contacts the first surface 4521 of the second portion 452, and the projection of the annular edge of the second surface 4512 of the first portion 451 onto the plane formed by the X-axis and Z-axis surrounds the projection of the annular edge of the first surface 4521 of the second portion 452 onto the plane formed by the X-axis and Z-axis. The first surface 4511 of the first portion 451 is located on the side of its second surface 4512 opposite to the first surface 4521 of the second portion 452, and the second surface 4522 of the second portion 452 is located on the side of its first surface 4521 opposite to the second surface 4512 of the first portion 451.

[0103] The pin 45 also includes at least one limiting post disposed on the side surface 4523 of the second portion 452. It should be noted that the shape and number of the limiting posts are not limited in this embodiment; those skilled in the art can set them according to actual conditions. For example, the shape of the limiting post may include a cuboid, cube, cylinder, or triangular prism, etc. For example, the number of limiting posts may be two, including a first limiting post 4531 and a second limiting post 4532. The distance from the first limiting post 4531 to the first portion 451 is less than the distance from the second limiting post 4532 to the first portion 451, and the projection of the first limiting post 4531 onto the plane formed by the X-axis and Z-axis does not overlap with the projection of the second limiting post 4532 onto the plane formed by the X-axis and Z-axis. For example, see [link to example]. Figure 12 , Figure 12The diagram illustrates the positional relationship between the first and second limiting posts in this embodiment. The line segment connecting the center O1 of the projection 4531' of the first limiting post 4531 onto the plane formed by the X and Z axes with the center O1 of the projection of the second part 451 onto the plane formed by the X and Z axes is the first line segment L1. The line segment connecting the center O1 of the projection 4532' of the second limiting post 4532 onto the plane formed by the X and Z axes with the center O1 of the projection of the second part 451 onto the plane formed by the X and Z axes is the second line segment L2. The included angle λ between the first line segment L1 and the second line segment L2 can satisfy: 45° ≤ λ ≤ 135°. For example, the included angle λ between the first line segment L1 and the second line segment L2 includes, but is not limited to, 45°, 60°, 90°, 100°, 105°, 110°, 120°, 130°, or 135°, etc. This embodiment uses an included angle λ of 90° between the first line segment L1 and the second line segment L2 as an example for illustration.

[0104] See Figures 13-17 , Figure 13 This is a schematic diagram of the main swing arm from one perspective, provided in an embodiment of this application. Figure 14 for Figure 13 The enlarged view of the BB region in the main swing arm is shown. Figure 15 This is a structural schematic diagram of a main swing arm from another perspective, provided as an embodiment of this application. Figure 16 for Figure 15 An enlarged view of the CC region in the main swing arm is shown. Figure 17 The size relationship diagram of the first sub-through hole and the second sub-through hole within the first through hole provided in the embodiments of this application is compared with the above embodiments ( Figures 6-8Unlike the corresponding embodiment, the fixing portion 42231 on the connecting portion 4223 of the main swing arm 422 only has a first through hole 42233 that penetrates the entry surface 42232 and the connecting surface 42235, and does not have a second through hole 42234. Furthermore, the first through hole 42233 includes a first sub-through hole 422331 and a second sub-through hole 422332 that are interconnected. The first sub-through hole 422331 includes a first annular sidewall 422331a, and the second sub-through hole 422332 includes a second annular sidewall 422332a. The first annular sidewall 422331a of the first sub-through hole 422331 and the second annular sidewall 422332a of the second sub-through hole 422332 can both be annular, and the diameter H1 of the annulus formed by the first annular sidewall 422331a of the first sub-through hole 422331 is smaller than the diameter H2 of the annulus formed by the second annular sidewall 422332a of the second sub-through hole 422332. In other words, the projection of the first sub-through hole 422331 onto the plane formed by the X-axis and Z-axis is a first circle, and the projection of the second sub-through hole 422332 onto the plane formed by the X-axis and Z-axis is a second circle. The diameter of the first circle is smaller than the diameter of the second circle, and the projection of the annular edge of the second sub-through hole 422332 onto the plane formed by the X-axis and Z-axis surrounds the projection of the annular edge of the first sub-through hole 422331 onto the plane formed by the X-axis and Z-axis. The first annular sidewall 422331a and the second annular sidewall 422332a are connected by an annular connecting wall 422333, and the first annular sidewall 422331a, the annular connecting wall 422333, and the second annular sidewall 422332a are connected sequentially. The first annular sidewall 422331a, the annular connecting wall 422333, and the second annular sidewall 422332a together form the sidewall of the first through hole 42233.

[0105] The first annular sidewall 422331a of the first sub-through hole 422331 is partially recessed to form a groove 422334, and the groove 422334 penetrates the entry surface 42232 of the fixing part 42231 and the annular connecting wall 422333.

[0106] Furthermore, the diameter of the projection of the second portion 452 of the pin 45 onto the plane formed by the X and Z axes is smaller than the diameter of the projection of the first sub-through hole 422331 onto the plane formed by the X and Z axes, while the diameter of the projection of the first portion 451 of the pin 45 onto the plane formed by the X and Z axes is larger than the diameter of the projection of the first sub-through hole 422331 onto the plane formed by the X and Z axes. Thus, the second portion 452 of the pin 45 can enter the first sub-through hole 422331, while the first portion 451, due to its larger size, cannot enter the first sub-through hole 422331.

[0107] Furthermore, when the second part 452 of the pin 45 moves along the Y-axis in the first sub-through hole 422331, the gap between the side surface 4523 of the second part 452 and the first annular sidewall 422331a of the first sub-through hole 422331 must be less than the height of the limiting post. In this way, the limiting post can only enter the second sub-through hole 422332 through the groove 422334 in the first sub-through hole 422331. And when the limiting post is located in the second sub-through hole 422332 and is not opposite to the groove 422334, the first sub-through hole 422331 can limit the limiting post in the Y-axis direction, preventing the limiting post from entering the first sub-through hole 422331.

[0108] See Figure 18 and Figure 19 , Figure 18 This is a structural schematic diagram of a door panel from one perspective, provided in an embodiment of this application. Figure 19 This is a structural schematic diagram of a door panel from another perspective, provided as an embodiment of this application, and is different from the above embodiment ( Figures 6-8 Unlike the corresponding embodiment, the door panel slide groove 43111 includes a first sub-slide groove 431111 and a second sub-slide groove 431112 that are interconnected. Along the Y-axis direction, the second sub-slide groove 431112 is located on the side of the first sub-slide groove 431111 that is away from the fixing part 42231. The first sub-slide groove 431111 and the second sub-slide groove 431112 can both be arc-shaped slide grooves, that is, the projections of the first sub-slide groove 431111 and the second sub-slide groove 431112 on the plane formed by the X-axis and the Z-axis are both arc-shaped, and the projection of the annular edge of the second sub-slide groove 431112 on the plane formed by the X-axis and the Z-axis surrounds the projection of the annular edge of the first sub-slide groove 431111 on the plane formed by the X-axis and the Z-axis.

[0109] See Figure 20 , Figure 20 The positional relationship diagram of the pin, the fixing part and the sliding part provided in the embodiment of this application shows that, along the Y-axis direction, the distance H3 between the entry surface 42232 and the annular connecting wall 422333 is greater than the distance H4 from the first limiting post 4531 to the first part 451; the distance H5 from the second limiting post 4532 to the first part 451 is greater than the distance H6 between the entry surface 42232 and the second sub-slide groove 431112.

[0110] See also Figure 20 and combined Figure 9 and Figure 10The assembly process of the pin 45 can be as follows: One end of the pin 45 (i.e., the end of the second part 452 facing away from the first part 451) passes through the entry surface 42232 and enters the first sub-through hole 422331, and then enters the second sub-through hole 422332 through the first sub-through hole 422331. At the same time, the second limiting post 4532 enters the second sub-through hole 422332 through the groove 422333. Then the pin 45 is rotated 90°, at which point the first limiting post 4531 enters the groove 422333. One end of the pin 45 continues to move along the Y-axis and enters the door panel slide groove 43111, and the second limiting post 4532 is located in the second sub-slide groove 431112. The pin 45 is rotated further, so that the first limiting post 4531 enters the second sub-through hole 422332 from the groove 422333. Since the distance H3 between the entry surface 42232 and the annular connecting wall 422333 is greater than the distance H4 from the first limiting post 4531 to the first part 451, the pin 45 can be fixedly connected to the fixing part 42231 of the main swing arm 422 by an interference fit. Furthermore, since one end of the pin 45 is located within the door panel slide groove 43111, and the second limiting post 4532 is located within the second sub-slide groove 431112, on the one hand, one end of the pin 45 can slide and rotate within the door panel slide groove 43111; on the other hand, the second sub-slide groove 431112 can limit the second limiting post 4532 in the Y-axis direction, preventing the second limiting post 4532 from moving towards the first sub-slide groove 431111.

[0111] In other words, a groove 422333 is provided in the first through hole 422331, allowing the limiting post on the pin 45 to enter the fixing part 42231 of the main swing arm 422 through the groove 422333. The pin 45 is secured by an interference fit (i.e., the distance H3 between the entry surface 42232 and the annular connecting wall 422333 is greater than the distance H4 from the first limiting post 4531 to the first part 451). This not only effectively improves the problems of being unable to disassemble after welding and the presence of welding slag and foreign matter, as well as the problems of easy detachment after glue application leading to failure of the flexible display screen 10, but also effectively reduces costs and process difficulty.

[0112] It should be noted that the above example is based on the scenario where two limiting posts (i.e., a first limiting post 4531 and a second limiting post 4532) are set on the pin 45. When two limiting posts are provided on the pin 45, both limiting posts can limit the pin 45 in the Y-axis direction. That is, not only does the first limiting post 4531 bear a portion of the force in the Y-axis direction, but the second limiting post 4532 also bears a portion of the force in the Y-axis direction (e.g., ...). Figure 21As shown, the size of the first sub-slide groove 431111 is smaller and the size of the second sub-slide groove 431112 is larger. This allows the second limiting post 4532 to be limited by the second sub-slide groove 431112 and unable to move along the Y-axis, thus improving the strength of the pin 45.

[0113] Of course, in some other alternative embodiments, the number of limiting posts may be only one, such as including only the first limiting post 4531.

[0114] In some other alternative embodiments, see Figure 22 , Figure 22 This is a structural schematic diagram of a pin shaft from another perspective, provided in an embodiment of this application. The number of limiting posts is multiple, such as four. The four limiting posts include two first limiting posts 4531 and two second limiting posts 4532. The two first limiting posts 4531 are equidistant from the first portion 451, and their positions on the side surface 4523 of the second portion 452 are different, such as the two first limiting posts 4531 facing each other. Similarly, the two second limiting posts 4532 are equidistant from the first portion 451, and their positions on the side surface 4523 of the second portion 452 are different, such as the two second limiting posts 4532 facing each other. When the two first limiting posts 4531 are facing each other, and the two second limiting posts 4532 are facing each other, the line connecting the projections of the two first limiting posts 4531 onto the plane formed by the X-axis and the Z-axis, and the line connecting the projections of the two second limiting posts 4532 onto the plane formed by the X-axis and the Z-axis, intersect at a cross point, and the intersection point passes through the center O1 of the projection of the second part 451 onto the plane formed by the X-axis and the Z-axis. Correspondingly, there can also be two grooves 422334, with the openings of the two grooves 422334 facing each other.

[0115] In this case, the assembly process of the pin 45 can be as follows: One end of the pin 45 (i.e., the end of the second part 452 facing away from the first part 451) passes through the entry surface 42232 and enters the first sub-through hole 422331, and then enters the second sub-through hole 422332 through the first sub-through hole 422331. At the same time, the two second limiting posts 4532 enter the second sub-through hole 422332 through the two grooves 422333 respectively. Then, the pin 45 is rotated 90°, at which point the two first limiting posts 4531 enter the two grooves 422333 respectively. One end of the pin 45 continues to move along the Y-axis and enters the door panel slide groove 43111, and the two second limiting posts 4532 are located in the second sub-slide groove 431112. The pin 45 is rotated further, so that the two first limiting posts 4531 enter the second sub-through hole 422332 from their respective corresponding grooves 422333 respectively. Since the distance H3 between the entry surface 42232 and the annular connecting wall 422333 is greater than the distance H4 between the first limiting post 4531 and the first part 451, the pin 45 can be fixedly connected to the fixing part 42231 of the main swing arm 422 by means of interference fit.

[0116] In some embodiments, see continue to see Figure 16 The connection between the sidewall of the groove 422333 and the annular connecting wall 422333 (e.g. Figure 16 The DD region in the diagram is an inclined or curved surface. This design gradually increases the distance between the entry surface 42232 and the annular connecting wall 422333, facilitating the locking of the pin 45 and thus achieving a better interference fit.

[0117] In some embodiments, see continue to see Figure 9 and Figure 10 The connecting portion 4223 of one main swing arm 422 has a recessed surface on the side opposite to the first door panel 431, forming a receiving cavity 42230, and a fixing portion 42231 is disposed within the receiving cavity 42230. The connecting portion 4223 of the other main swing arm 422 has a recessed surface on the side opposite to the second door panel 432, forming another receiving cavity 42230, and another fixing portion 42231 is disposed within this receiving cavity 42230. This arrangement facilitates the thinner design of the pivot structure 40 and avoids an increase in thickness due to the installation of the fixing portion 42231.

[0118] In this case, the receiving cavity 42230 extends along the Y-axis direction, and the fixing part 42231 is provided at the edge of the receiving cavity 42230. This arrangement facilitates the assembly of the pin 45 and also ensures the strength of the main swing arm 422, so that the strength of the main swing arm 422 is not affected by the setting of the receiving cavity 42230 (too much hollowing out would affect the strength).

[0119] In some embodiments, see Figure 23 , Figure 23 This is a structural schematic diagram of a pin shaft from another perspective, provided in an embodiment of this application. A positioning structure 454 is provided on the first surface 4511 of the first portion 451 of the pin shaft 45 to determine the position of the limiting post. Thus, during the assembly of the pin shaft 45, the worker determines the position of the limiting post using the positioning structure 454.

[0120] The specific structure of the positioning structure 454 is not limited in this application embodiment, as long as the position of the limiting post can be determined.

[0121] See also the following for some possible implementations. Figure 23 The positioning structure 454 can be formed by a partial recess in the first surface 4511 of the first part 451, and the extension direction of this recess is the same as the extension direction of the first limiting post 4531 (i.e., the height direction of the first limiting post 4531), that is, the recess is an elongated groove. In this way, when assembling the pin 45, the operator can determine the position of the first limiting post 4531 according to the extension direction of the recess, and then determine the position of the second limiting post 4532 (because the first limiting post 4531 and the second limiting post 4532 satisfy an included angle relationship, such as 90°).

[0122] Of course, the extension direction of the recess is the same as the extension direction of the second limiting post 4532 (i.e., the height direction of the second limiting post 4532). In this way, when assembling the pin 45, the operator can determine the position of the second limiting post 4532 based on the extension direction of the recess, and then determine the position of the first limiting post 4531 (because the first limiting post 4531 and the second limiting post 4532 satisfy an included angle relationship, such as 90°).

[0123] In some possible implementations, the positioning structure 454 can be formed by a partial protrusion on the first surface 4511 of the first portion 451 (not shown in the figure), and the extension direction of the protrusion is the same as the extension direction of the first limiting post 4531 (i.e., the height direction of the first limiting post 4531). In this case, the protrusion can be a cuboid. In this way, when assembling the pin 45, the operator can determine the position of the first limiting post 4531 based on the extension direction of the protrusion, and then determine the position of the second limiting post 4532 (because the first limiting post 4531 and the second limiting post 4532 satisfy an included angle relationship, such as 90°).

[0124] Of course, the extension direction of the protrusion is the same as the extension direction of the second limiting post 4532 (i.e., the height direction of the second limiting post 4532). In this way, when assembling the pin 45, the operator can determine the position of the second limiting post 4532 based on the extension direction of the protrusion, and thus determine the position of the first limiting post 4531 (because the first limiting post 4531 and the second limiting post 4532 satisfy an included angle relationship, such as 90°).

[0125] It should be noted that the above description is based on the example of the first door panel 431 being fixedly connected to one of the main swing arms 422 through a pin 45, and the second door panel 432 being fixedly connected to another main swing arm 422 through another pin 45. However, this does not constitute a limitation on this application. As long as the two structural components can be fixedly connected through the aforementioned pin 45, they are within the scope of protection of this application.

[0126] In some alternative embodiments, the aforementioned fixing part can be provided on one of the main swing arms 422, and a sliding part can be provided on the first connecting member 4231. A pin 45 is then used to achieve a fixed connection with the fixing part, thereby achieving a fixed connection between the pin 45 and one of the main swing arms 422, with one end of the pin 45 exposed. In this way, one end of the pin 45 can rotate and / or slide within the sliding part of the first connecting member 4231, thereby achieving a rotational and / or sliding connection between the main swing arm 422 and the first connecting member 4231. Alternatively, the aforementioned fixing part can be provided on another main swing arm 422, and a sliding part can be provided on the second connecting member 4232. Another pin 45 is then used to achieve a fixed connection with the fixing part, thereby achieving a fixed connection between the pin 45 and the other main swing arm 422, with one end of the pin 45 exposed. In this way, one end of the pin 45 can rotate and / or slide within the sliding part of the second connector 4232, thereby realizing the rotational and / or sliding connection between the main swing arm 422 and the second connector 4232.

[0127] In other words, see [link / reference] Figure 4 and Figure 5 The fixed shaft 44 mentioned above can be replaced by a pin 45 to achieve a rotatable connection between the main swing arm 422 and the connecting piece 423.

[0128] Any content in the various embodiments of this application, as well as any content in the same embodiment, can be freely combined. Any combination of the above content is within the scope of this application.

[0129] The embodiments of this application have been described above with reference to the accompanying drawings. However, this application is not limited to the specific embodiments described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this application without departing from the spirit and scope of the claims, and all of these forms are within the protection scope of this application.

Claims

1. A rotating shaft structure, characterized in that, include: The structure comprises a first structural component, a second structural component, and a pin; the first structural component is provided with a fixing part, and the second structural component is provided with a sliding part; the fixing part is provided with a through hole, and the sliding part is provided with a sliding groove; The through hole includes a first sub-through hole and a second sub-through hole that communicate with each other. The opening of the first sub-through hole is smaller than the opening of the second sub-through hole. The first sub-through hole includes a first annular sidewall, and the second sub-through hole includes a second annular sidewall. The first annular sidewall and the second annular sidewall are connected by an annular connecting wall. The first annular sidewall is partially recessed to form at least one groove, and the groove communicates with the second sub-through hole. The pin includes a first part and a second part. The size of the first part on the reference surface is larger than the size of the second part on the reference surface, and larger than the size of the first sub-through hole on the reference surface. The extension direction of the pin is perpendicular to the reference surface. At least one first limiting post is provided on the side wall of the second part. A portion of the second part is located within the through hole, and another portion of the second part is located within the slide groove; along the extending direction of the pin, the first part is located on the side of the fixing part opposite to the sliding part; the first limiting post is located within the second sub-through hole and is adjacent to the annular connecting wall; The distance from the surface of the fixing part that is adjacent to the first part to the annular connecting wall is greater than the distance from the first limiting post to the first part.

2. The rotating shaft structure according to claim 1, characterized in that, The slide groove includes a first sub-slide groove and a second sub-slide groove that communicate with each other, wherein the opening of the first sub-slide groove is smaller than the opening of the second sub-slide groove; The second part has at least one second limiting post on its side wall, and the second limiting post is located in the second sub-slide groove.

3. The rotating shaft structure according to claim 2, characterized in that, The projections of the first limiting post on the reference surface and the projections of the second limiting post on the reference surface do not overlap.

4. The rotating shaft structure according to claim 3, characterized in that, The line segment connecting the center of the projection of the first limiting post on the reference surface and the center of the projection of the second part on the reference surface is the first line segment, and the line segment connecting the projection of the second limiting post on the reference surface and the center is the second line segment. The included angle λ between the first line segment and the second line segment satisfies: 45°≤λ≤135°.

5. The rotating shaft structure according to any one of claims 1-4, characterized in that, The connection between the sidewall of the groove and the annular connecting wall is an inclined surface or a curved surface.

6. The rotating shaft structure according to any one of claims 1-5, characterized in that, Along the extension direction of the pin, a positioning structure is provided on the surface of the first part opposite to the fixing part, for determining the position of the first limiting post.

7. The rotating shaft structure according to claim 6, characterized in that, The first part has a partial recess on the side of the surface opposite to the fixing part to form the positioning structure, and the extending direction of the positioning structure is the same as the extending direction of the first limiting post.

8. The rotating shaft structure according to claim 6, characterized in that, The second part has a second limiting post on its side wall; the surface of the first part away from the fixing part is partially recessed to form the positioning structure, and the extension direction of the positioning structure is the same as the extension direction of the second limiting post.

9. The rotating shaft structure according to any one of claims 1-8, characterized in that, The surface of the first structural member is recessed to form a strip-shaped receiving cavity, and the fixing part is disposed in the receiving cavity.

10. The rotating shaft structure according to any one of claims 1-9, characterized in that, The first structural component is the swing arm of the pivot structure, and the second structural component is the door panel of the pivot structure.

11. The rotating shaft structure according to any one of claims 1-9, characterized in that, The first structural component is the swing arm of the rotating shaft structure, and the second structural component is the connector of the rotating shaft structure.

12. The rotating shaft structure according to any one of claims 1-11, characterized in that, The shape of the first limiting post includes a cuboid, a cube, a cylinder, or a triangular prism.

13. A foldable electronic device, characterized in that, include: At least one rotating shaft structure as described in any one of claims 1-12.

14. The foldable electronic device according to claim 13, characterized in that, The foldable electronic device also includes a flexible display screen and at least two housings; At least one of the aforementioned rotating shaft structures is provided between two adjacent fuselages; The support mechanism of the body and the pivot structure is used to support the flexible display screen.

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