A rotating shaft mechanism and a folding screen terminal

Abstract

The application provides a rotating shaft mechanism and a folding screen terminal, and relates to the technical field of terminal equipment. The rotating shaft mechanism is used to solve the problem of low local support strength of the rotating shaft mechanism, reduce the reliability of the whole rotating shaft mechanism, and affect the user experience. The rotating shaft mechanism comprises a base, a connecting block, a main swing arm and a secondary swing arm. The connecting block is arranged on one side of the base. One end of the main swing arm is rotationally connected with the base, the other end of the main swing arm is rotationally connected with the connecting block, and the main swing arm can only rotate relative to the connecting block. One end of the secondary swing arm is rotationally connected with the base, the other end of the secondary swing arm is rotationally connected with the connecting block, and the secondary swing arm can only rotate relative to the connecting block. The rotating shaft mechanism provided by the application is applied to the folding screen terminal.

Description

Technical Field

[0001] This application relates to the field of terminal equipment technology, and in particular to a hinge mechanism and a foldable screen terminal. Background Technology

[0002] Foldable screen devices are gaining popularity due to their large-screen display capabilities. These devices utilize an internal hinge mechanism to fold or unfold. However, the hinge mechanism in foldable screen devices often suffers from low local support strength, reducing its overall reliability and impacting the user experience. Summary of the Invention

[0003] This application provides a hinge mechanism and a foldable screen terminal to solve the problem that the local support strength of the hinge mechanism is low, which reduces the overall reliability of the hinge mechanism and affects the user experience.

[0004] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, a rotating shaft mechanism is provided, comprising a base, a connecting block, a main swing arm, and a secondary swing arm. The connecting block is disposed on one side of the base. One end of the main swing arm is rotatably connected to the base, and the other end of the main swing arm is rotatably connected to the connecting block; the main swing arm can only rotate relative to the connecting block. One end of the secondary swing arm is rotatably connected to the base, and the other end of the secondary swing arm is rotatably connected to the connecting block; the secondary swing arm can only rotate relative to the connecting block.

[0006] The pivot mechanism provided in the first aspect of this application has a secondary swing arm that is rotatably connected to the base and the connecting block at both ends, and the secondary swing arm can only rotate relative to the connecting block. Therefore, the secondary swing arm can form an effective support between the base and the connecting block, that is, the secondary swing arm and the connecting block will not slide relative to each other. This allows the secondary swing arm to transmit external impact force to the connecting block, thereby reducing the risk of the base deforming inward and causing the space accommodating the foldable screen to collapse, which is beneficial to improving the reliability of the overall structure.

[0007] In one possible implementation of the first aspect of this application, the rotation axis of the main swing arm relative to the connecting block is parallel to the rotation axis of the auxiliary swing arm relative to the connecting block. In this structure, the two are not collinear, allowing the main swing arm and the auxiliary swing arm to move along different trajectories, thereby preventing the base from rotating relative to the main swing arm and the auxiliary swing arm.

[0008] In one possible implementation of the first aspect of this application, the rotation axis of the main swing arm relative to the base is parallel to the rotation axis of the auxiliary swing arm relative to the base. In this structure, the two are not collinear, allowing the main swing arm and auxiliary swing arm to move along different trajectories, thereby preventing the connecting block from rotating relative to the main and auxiliary swing arms.

[0009] In one possible implementation of the first aspect of this application, along the thickness direction of the pivot mechanism, the distance between the rotation axis of the secondary swing arm relative to the base and the base is less than or equal to the distance between the rotation axis of the main swing arm relative to the base and the base. This structure prevents the secondary swing arm from protruding away from the base, thus avoiding pressure on the folding screen.

[0010] In one possible implementation of the first aspect of this application, the rotating shaft mechanism includes a first rotating shaft, and the auxiliary swing arm and the connecting block are rotatably connected via the first rotating shaft. This structure ensures that the auxiliary swing arm can only rotate circumferentially relative to the connecting block around the first rotating shaft, thereby preventing radial movement of the auxiliary swing arm relative to the connecting block along the first rotating shaft, thus improving the support strength of the auxiliary swing arm between the connecting block and the base.

[0011] In one possible implementation of the first aspect of this application, a first shaft hole is provided on the auxiliary swing arm, a first connecting hole is provided on the connecting block, and a first rotating shaft passes through the first shaft hole and the first connecting hole. Exemplarily, the first rotating shaft can be fixedly connected to the auxiliary swing arm or the connecting block.

[0012] In one possible implementation of the first aspect of this application, a first receiving groove is provided on the connecting block, and the secondary swing arm includes a first main body and a first connecting part. The first connecting part is fixed to the end of the first main body away from the base, a first shaft hole is formed on the first connecting part, and the first connecting part is disposed in the first receiving groove. This structure is advantageous for reducing the thickness of the hinge mechanism, which is beneficial for making the foldable screen terminal thinner and lighter.

[0013] For example, multiple first connecting parts are provided, each of which has a first shaft hole. The multiple first connecting parts are distributed at intervals along a direction parallel to the rotation axis of the auxiliary swing arm. Multiple first receiving grooves are provided on the connecting block, and the multiple first connecting parts are correspondingly provided with the multiple first receiving grooves. The first connecting parts are respectively disposed in the corresponding first receiving grooves, and the first rotating shaft passes through the multiple first shaft holes and the first connecting holes in sequence.

[0014] In one possible implementation of the first aspect of this application, a notch is formed on the bottom surface of the first receiving groove, the notch extends along the thickness direction of the connecting block and penetrates the connecting block, and a portion of the first connecting part is located within the notch. With this structure, it is not necessary to reduce the thickness of the secondary swing arm, which helps to ensure the structural strength of the secondary swing arm.

[0015] In one possible implementation of the first aspect of this application, the secondary swing arm further includes a first rotating part, which is fixed to the end of the first main body away from the first connecting part. The first rotating part has a first arc-shaped groove, the axis of which is parallel to a first direction, which is parallel to the rotation axis of the secondary swing arm relative to the connecting block. The base includes a base body and a first slider, which is disposed on the base body and extends into the first arc-shaped groove. In this structure, a virtual pivot is formed between the secondary swing arm and the base, thereby facilitating the adjustment of the relative position between the secondary swing arm and the main swing arm during rotation.

[0016] In one possible implementation of the first aspect of this application, a first arc-shaped groove is provided at the end of the first rotating part distributed along a first direction. This structure helps to reduce the distance between the two auxiliary swing arms on both sides of the base, thereby helping to reduce the thickness of the foldable screen terminal in the folded state.

[0017] In one possible implementation of the first aspect of this application, a first arc-shaped groove is formed at one end of the first connecting portion near the main swing arm; a cam surface is formed on the end face of the first connecting portion away from the main swing arm. In this structure, the cam surface can cooperate with a damping component to generate damping force during rotation, thereby improving the rotation feel.

[0018] In one possible implementation of the first aspect of this application, a first limiting groove is formed on the surface of the first rotating part distributed along the thickness direction; the base also includes a first limiting block, which is disposed on the base body and extends into the first limiting groove; during the rotation of the secondary swing arm relative to the base, the first limiting block slides along the first limiting groove. This structure further restricts the rotation trajectory of the secondary swing arm, which is beneficial to improving structural reliability.

[0019] In one possible implementation of the first aspect of this application, the bottom surface of the first limiting groove and the surface of the first limiting block facing the bottom surface of the first limiting groove are both formed as arc surfaces, and the axis of the arc surface coincides with the axis of the first arc-shaped groove. This structure ensures the movement trajectory of the auxiliary swing arm, prevents the auxiliary swing arm from deviating, and further improves the reliability of the overall structure.

[0020] In one possible implementation of the first aspect of this application, a first through hole is provided on the first main body, and the rotating shaft mechanism can rotate between an unfolded state and a folded state. When the rotating shaft mechanism is in the unfolded state, a first limiting block passes through the first through hole; when the rotating shaft mechanism is in the folded state, the first limiting block separates from the first through hole. This structure can prevent axial movement of the auxiliary swing arm rotating shaft mechanism, which is beneficial to improving structural reliability.

[0021] In one possible implementation of the first aspect of this application, the rotating shaft mechanism includes a second rotating shaft, and the main swing arm and the connecting block are rotatably connected via the second rotating shaft. This structure ensures that the main swing arm can only rotate circumferentially relative to the connecting block around the second rotating shaft, thereby preventing radial movement of the main swing arm relative to the connecting block along the second rotating shaft, thus improving the support strength of the main swing arm between the connecting block and the base.

[0022] In one possible implementation of the first aspect of this application, a second shaft hole is provided on the main swing arm, a second connecting hole is provided on the connecting block, and a second rotating shaft passes through the second shaft hole and the second connecting hole. Exemplarily, the second rotating shaft can be fixedly connected to the auxiliary swing arm or the connecting block.

[0023] In one possible implementation of the first aspect of this application, a second receiving groove is provided on the connecting block, the main swing arm includes a second main body and a second connecting part, the second connecting part is fixed to the end of the second main body away from the base, a second shaft hole is formed on the second connecting part, and the second connecting part is disposed in the second receiving groove. This structure is advantageous for reducing the thickness of the pivot mechanism, and facilitates the thinning and lightening of the foldable screen terminal.

[0024] For example, multiple second connecting parts are provided, each of which has a second shaft hole. The multiple second connecting parts are distributed at intervals along a direction parallel to the rotation axis of the auxiliary swing arm. Multiple second receiving grooves are provided on the connecting block, and the multiple second connecting parts are correspondingly provided with the multiple second receiving grooves. The second connecting parts are respectively disposed in the corresponding second receiving grooves, and the second rotating shaft passes through the multiple second shaft holes and the second connecting holes in sequence.

[0025] In one possible implementation of the first aspect of this application, the main swing arm further includes a second rotating part, which is fixed to the end of the second main body away from the second connecting part. The second rotating part has a second arc-shaped groove, the axis of which is parallel to a second direction, which is parallel to the rotation axis of the main swing arm relative to the connecting block. The base includes a base body and a second slider, the second slider being disposed on the base body and extending into the second arc-shaped groove. In this structure, a virtual pivot is formed between the main swing arm and the base, thereby facilitating the adjustment of the relative position between the auxiliary swing arm and the main swing arm during rotation.

[0026] In one possible implementation of the first aspect of this application, the second rotating part has two ends provided with second arc-shaped sliding grooves distributed along the second direction, and the base body is provided with two corresponding second sliders, which extend into the corresponding second arc-shaped sliding grooves. This structure helps to reduce the distance between the two main swing arms on both sides of the base, thereby helping to reduce the thickness of the foldable screen terminal in the folded state.

[0027] In one possible implementation of the first aspect of this application, a second limiting groove is formed on the surface of the second rotating part distributed along the thickness direction; the base also includes a second limiting block, which is disposed on the base body and extends into the second limiting groove; during the rotation of the main swing arm relative to the base, the second limiting block slides along the second limiting groove. This structure further restricts the rotation trajectory of the main swing arm, which is beneficial to improving structural reliability.

[0028] In one possible implementation of the first aspect of this application, a second through hole is provided on the second main body, and the rotating shaft mechanism can rotate between an unfolded state and a folded state. When the rotating shaft mechanism is in the unfolded state, a second limiting block passes through the second through hole; when the rotating shaft mechanism is in the folded state, the second limiting block separates from the second through hole. This structure can prevent axial movement of the main swing arm rotating shaft mechanism, which is beneficial to improving structural reliability.

[0029] In one possible implementation of the first aspect of this application, a protrusion is provided on the second rotating part, and a groove is formed on the surface of the second limiting block facing the bottom surface of the second limiting slide groove. The extending direction of the groove is the same as the extending direction of the second limiting slide groove. When the rotating shaft mechanism is in the folded state, the protrusion extends into the groove; when the rotating shaft mechanism is in the unfolded state, the protrusion is outside the groove. This structure further enhances the restriction on the movement trajectory of the main swing arm, thereby further improving structural reliability.

[0030] In one possible implementation of the first aspect of this application, the pivot mechanism includes multiple sets of swing arm groups, which are spaced apart along the axial direction of the pivot mechanism. Each set of swing arm groups includes at least one main swing arm and at least one auxiliary swing arm, and both the main and auxiliary swing arms in each set are connected to the same connecting block. This structure allows each set of swing arm groups to provide better support between the base and the connecting block, thereby reducing the risk of inward deformation of the base, i.e., reducing the risk of the base squeezing the folding screen.

[0031] Secondly, a foldable screen terminal is provided, which includes multiple housings and a hinge mechanism. The hinge mechanism is as described in any of the above technical solutions, and two adjacent housings are connected by a hinge mechanism.

[0032] The foldable screen terminal provided in the second aspect of this application, because it includes the hinge mechanism described in any of the above technical solutions, can solve the same technical problem and achieve the same technical effect.

[0033] In one possible implementation of the first aspect of this application, the connecting block of the rotating shaft mechanism is fixedly connected to the housing, and a clearance groove is provided on the surface of the housing facing the connecting block. A portion of the end of the rotating shaft mechanism that is connected to the connecting block is located in the clearance groove. Attached Figure Description

[0034] Figure 1 This application provides a structural diagram of a foldable screen terminal according to an embodiment of the present application.

[0035] Figure 2 This is a front view of a foldable screen terminal provided in an embodiment of this application;

[0036] Figure 3 This application provides a front view of a foldable screen terminal in a folded state, as shown in an embodiment.

[0037] Figure 4 A structural diagram of a rotating shaft mechanism provided in an embodiment of this application;

[0038] Figure 5 An enlarged view of a partial structure of a rotating shaft mechanism provided in an embodiment of this application;

[0039] Figure 6 An exploded view of a rotating shaft mechanism provided in an embodiment of this application;

[0040] Figure 7 A cross-sectional view of the auxiliary swing arm of a rotating shaft mechanism in a folded state, provided for an embodiment of this application;

[0041] Figure 8 for Figure 7 The provided schematic diagram of the rotating shaft mechanism;

[0042] Figure 9 A structural diagram of another rotating shaft mechanism provided in an embodiment of this application;

[0043] Figure 10 An exploded view of another rotating shaft mechanism provided in the embodiments of this application;

[0044] Figure 11 A cross-sectional view of the auxiliary swing arm of the rotating shaft mechanism provided in the embodiment of this application in a folded state;

[0045] Figure 12 for Figure 11 The provided schematic diagram of the rotating shaft mechanism;

[0046] Figure 13 A comparison diagram showing the distance between the rotation axis of the main swing arm and the base, and the distance between the rotation axis of the auxiliary swing arm and the base, provided in the embodiments of this application.

[0047] Figure 14 A comparison diagram showing the distance between the rotation axis of the main swing arm and the housing, and the distance between the rotation axis of the auxiliary swing arm and the housing, provided in the embodiments of this application.

[0048] Figure 15 for Figure 7 A schematic diagram of the linkage mechanism formed when the provided rotating shaft mechanism rotates to different positions;

[0049] Figure 16 for Figure 11 A schematic diagram of the linkage mechanism formed by the provided pivot mechanism;

[0050] Figure 17 A graph showing the distance between the axis of rotational connection between the auxiliary swing arm and the base and the reference boundary, provided in an embodiment of this application.

[0051] Figure 18 for Figure 15 A schematic diagram of the parameters of the two-bar linkage structure formed;

[0052] Figure 19 This is an enlarged view of the secondary swing arm of the rotating shaft mechanism provided in the embodiments of this application;

[0053] Figure 20 Other structural views of the rotating shaft mechanism provided in the embodiments of this application;

[0054] Figure 21 Another view of the enlarged structure of the secondary swing arm of the rotating shaft mechanism provided in the embodiment of this application;

[0055] Figure 22 for Figure 20 A partially enlarged view of the secondary swing arm of the provided rotating shaft mechanism;

[0056] Figure 23 An enlarged view of the main swing arm of the rotating shaft mechanism provided in the embodiments of this application;

[0057] Figure 24 Another perspective enlarged view of the main swing arm of the rotating shaft mechanism provided in the embodiments of this application;

[0058] Figure 25 for Figure 20 A partial enlarged view of the main swing arm of the provided rotating shaft mechanism;

[0059] Figure 26 An enlarged view of the main swing arm of the rotating shaft mechanism provided in the embodiment of this application in a folded state;

[0060] Figure 27 This is a structural diagram of the base of the rotating shaft mechanism provided in an embodiment of this application.

[0061] Reference numerals: 01-Folding screen terminal; 10-Folding screen; 11-First part; 12-Second part; 20-Support device; 21-Housing shell; 21a-Avoiding groove; 22-Rotating mechanism; 100-Shaft cover; 200-Base; 210-Arc groove; 220-Base body; 230-First slider; 240-First limiting block; 250-Second slider; 260-Second limiting block; 261-Groove; 270-Boss; 300-Door panel; 400-Connecting block; 410-Groove; 420-First connecting hole; 430-First receiving groove; 431-Notch; 440-Second connecting hole; 450-Second receiving groove; 500-Swing arm; 510-Main swing arm; 510a-Arc groove Block; 511-Second connecting part; 511a-Second shaft hole; 512-Second main body; 512a-Second through hole; 513-Second rotating part; 513a-Second arc-shaped slide groove; 513b-Second limiting slide groove; 513c-Second surface; 514-Protrusion; 520-Second swing arm; 521-First connecting part; 521a-First shaft hole; 522-First main body; 522a-First through hole; 523-First rotating part; 523a-First arc-shaped slide groove; 523b-Cam surface; 523c-First limiting slide groove; 523d-First surface; 530-Swing arm assembly; 600-First pin; 610-Second pin; 700-First rotating shaft; 710-Second rotating shaft; 30-Secondary screen. Detailed Implementation

[0062] The technical solutions of the embodiments of this application will be described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments.

[0063] Hereinafter, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature.

[0064] Furthermore, in this application, directional terms such as "upper" and "lower" are defined relative to the orientation of the components shown in the accompanying drawings. It should be understood that these directional terms are relative concepts, used for relative description and clarification, and can change accordingly depending on the orientation of the components in the accompanying drawings.

[0065] In this application, unless otherwise expressly specified and limited, the term "connection" shall be interpreted broadly. For example, "connection" may be a fixed connection, a detachable connection, or an integral part; it may be a direct connection or an indirect connection through an intermediate medium.

[0066] This application provides a foldable screen terminal, which can be an electronic device with a foldable screen. This application uses a mobile phone as an example of a foldable screen terminal for illustration.

[0067] Specifically, please refer to Figure 1 and Figure 2 , Figure 1 This is a structural diagram of a foldable screen terminal 01 provided in an embodiment of this application. Figure 2 This is a front view of a foldable screen terminal 01 provided in an embodiment of this application. The foldable screen terminal 01 may include a foldable screen 10 and a support device 20. The foldable screen 10 is supported and attached to the support device 20, and the support device 20 can drive the foldable screen 10 to rotate between an unfolded state and a folded state. It is understood that... Figure 1 and Figure 2 Only some components of the foldable screen terminal 01 are shown schematically. The actual shape, size, position, and structure of these components are not subject to change. Figure 1 and Figure 2 The limitations of the structure shown.

[0068] For ease of description in the following embodiments, an XYZ coordinate system is established. When the foldable screen terminal 01 is in the unfolded state, the width direction of the foldable screen terminal 01 is defined as the X-axis direction, the length direction of the foldable screen terminal 01 as the Y-axis direction, and the thickness direction of the foldable screen terminal 01 as the Z-axis direction. It should be noted that this XYZ coordinate system can be flexibly transformed according to actual needs. The embodiments of this application only provide one possible example and should not be considered as constituting a special limitation on this application.

[0069] The aforementioned foldable screen 10 is used to display images, videos, etc. The foldable screen 10 may include multiple first portions 11 and at least one second portion 12, with a second portion 12 positioned between two adjacent first portions 11. When the foldable screen terminal 01 is in a folded state, the second portion 12 of the foldable screen 10 is bent, and the multiple first portions 11 are stacked. At least the second portion 12 of the foldable screen 10 is a flexible screen, while the first portions 11 of the foldable screen 10 may be flexible screens, non-flexible screens, or a combination of both. Therefore, this application does not impose specific limitations in this regard.

[0070] Among them, the aforementioned foldable screen 10 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode (AMOLED) display, a mini organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MOLED) display, a quantum dot light-emitting diode (QLED) display, a liquid crystal display (LCD), etc.

[0071] The aforementioned support device 20 is used to support the folding screen 10. The support device 20 may include multiple housings 21 and a pivot mechanism 22, with adjacent housings 21 connected by the pivot mechanism 22. The first part 11 of the folding screen 10 is supported and attached to the corresponding housing 21, and the second part 12 of the folding screen 10 is supported and attached to the corresponding pivot mechanism 22. Adjacent housings 21 are rotatably connected by the pivot mechanism 22, thereby enabling the folding screen terminal 01 to rotate between the unfolded and folded states. In the following embodiment, the folding screen 10 includes two first parts 11 and one second part 12, and the support device 20 includes two housings 21 and one pivot mechanism 22, as an example for explanation.

[0072] With the foldable screen terminal 01 in its unfolded state, please continue reading. Figure 1 and Figure 2 , Figure 1 and Figure 2 The diagram shows the structure of the foldable screen terminal 01 in its unfolded state. At this time, the first part 11 and the second part 12 of the foldable screen 10 are on the same plane, ensuring the flatness of the foldable screen 10. In this state, the foldable screen terminal 01 can achieve a large-screen display, providing a better user experience. For example, when watching a movie, the user can use a large screen, which enhances the viewing experience.

[0073] When the aforementioned foldable screen terminal 01 is in a folded state, please refer to Figure 3 , Figure 3This is a front view of a foldable screen terminal 01 in a folded state, as provided in an embodiment of this application. In this state, the first part 11 of the foldable screen terminal 01 is stacked, the second part 12 of the foldable screen 10 is bent, and the support device 20 protects the foldable screen 10 from the outside, i.e., the foldable screen 10 is located between the two housings 21 of the support device 20. In this state, the foldable screen 10 is not visible to the user to prevent scratches or damage, thus providing effective protection for the foldable screen 10. For example, when the phone is not needed, the foldable screen terminal 01 can be folded to avoid screen damage.

[0074] In some embodiments, please continue reading Figure 3 The foldable screen terminal 01 may also include a secondary screen 30 (also referred to as an outer screen), which is disposed on the side of any housing 21 away from the foldable screen 10. When the foldable screen terminal 01 is in the folded state, the secondary screen 30 can be used to display images, allowing users to operate with one hand, thereby making the use scenarios of the foldable screen terminal 01 more diverse. For example, when a user is riding public transportation, one hand needs to hold the handrail. At this time, the secondary screen 30 can be used to display images for one-handed operation, which helps to further improve the user experience.

[0075] Based on this, please refer to Figure 4 , Figure 5 as well as Figure 6 , Figure 4 This is a structural diagram of a rotating shaft mechanism 22 provided in an embodiment of this application. Figure 5 This is an enlarged view of a partial structure of a rotating shaft mechanism 22 provided in an embodiment of this application. Figure 6 This is an exploded view of a rotating shaft mechanism 22 provided in an embodiment of this application. The rotating shaft mechanism 22 may include a shaft cover 100, a base 200, a door panel 300, a connecting block 400, and a swing arm 500. Figure 5 and Figure 6 Door panel 300 is not shown in the diagram.

[0076] The aforementioned shaft cover 100 is disposed between the two housings 21. When the foldable screen terminal 01 is in the folded state, the shaft cover 100 can be exposed, i.e., the shaft cover 100 is an external component. The base 200 is disposed inside the shaft cover 100. For example, the base 200 can be fixed to the shaft cover 100 by means of threaded connection, welding or bonding. The base 200 is provided with a swing arm 500, a door panel 300 and a connecting block 400 on both sides along the length direction (i.e., the aforementioned Y-axis direction).

[0077] The aforementioned door panel 300 is connected to the connecting block 400. For example, the door panel 300 and the connecting block 400 can be fixedly connected, or they can be rotatably connected. The surface of the door panel 300 away from the connecting block 400 is used to support a portion of the second part 12 of the aforementioned folding screen 10. The connecting block 400 is fixedly connected to the aforementioned housing 21. For example, the connecting block 400 can be fixedly connected to the housing 21 by bolts.

[0078] The first end of the aforementioned swing arm 500 is rotatably connected to the base 200, and the swing arms 500 located on both sides of the base 200 rotate in opposite directions. The rotation axis of the swing arm 500 is parallel to the Y-axis direction. The second end of the swing arm 500 is connected to the connecting block 400. When the swing arm 500 rotates relative to the base 200, it can drive the connecting block 400, the door panel 300, and the housing 21 to rotate. The door panel 300 can cause the second part 12 of the folding screen 10 to be bent, thereby enabling the folding screen terminal 01 to rotate between the unfolded state and the folded state.

[0079] The aforementioned swing arms 500 are provided in multiple manner, and the multiple swing arms 500 are distributed along the Y-axis direction. It is understood that multiple swing arms 500 are provided on both sides of the base 200; in the following embodiments, multiple swing arms 500 located on the same side of the base 200 are used as examples for illustration. For example, the multiple swing arms 500 may include a main swing arm 510 and a secondary swing arm 520.

[0080] The first end of the main swing arm 510 can be rotatably connected to the base 200 via an arc-shaped slider 510a and an arc-shaped groove 210. Specifically, the first end of the main swing arm 510 forms an arc-shaped slider 510a structure, and the base 200 has an arc-shaped groove 210. The first end of the main swing arm 510 extends into the arc-shaped groove 210, allowing the main swing arm 510 to be rotatably connected to the base 200. Furthermore, the second end of the main swing arm 510 can be rotatably connected to the connecting block 400 via a first pin 600. Specifically, the first pin 600 passes sequentially through the second end of the main swing arm 510 and the shaft hole on the connecting block 400, allowing the main swing arm 510 to be rotatably connected to the connecting block 400.

[0081] The first end of the aforementioned auxiliary swing arm 520 can be rotatably connected to the base 200 via a second pin 610. Specifically, the second pin 610 passes sequentially through shaft holes on both the auxiliary swing arm 520 and the base 200, allowing the auxiliary swing arm 520 to be rotatably connected to the connecting block 400. Furthermore, the second end of the auxiliary swing arm 520 can be slidably connected to the connecting block 400. Specifically, the connecting block 400 has a groove 410, and the second end of the auxiliary swing arm 520 extends into the groove 410, allowing the auxiliary swing arm 520 to be slidably connected to the connecting block 400.

[0082] Based on this, please refer to Figure 7 and Figure 8 , Figure 7 This is a cross-sectional view of the secondary swing arm 520 of a rotating shaft mechanism 22 in a folded state, provided in an embodiment of this application. Figure 8 for Figure 7 The provided schematic diagram of the motion principle of the rotating shaft mechanism 22 shows that during the rotation between the unfolded and folded states, the main swing arm 510 rotates relative to the base 200 and also rotates relative to the connecting block 400. The auxiliary swing arm 520 rotates relative to the base 200 while sliding relative to the connecting block 400, thus forming a motion mechanism with three revolute joints and one sliding joint between the main swing arm 510 and the connecting block 400. This allows for adaptive adjustment of the relative positions of the main swing arm 510 and the auxiliary swing arm 520 between the base 200 and the connecting block 400.

[0083] In some embodiments, please refer to Figure 9 and Figure 10 , Figure 9 This is a structural diagram of another rotating shaft mechanism 22 provided in an embodiment of this application. Figure 10 This is an exploded view of another rotating shaft mechanism 22 provided in an embodiment of this application. The rotating shaft mechanism 22 may include the aforementioned base 200, connecting block 400, main swing arm 510, and auxiliary swing arm 520. Furthermore, the rotating shaft mechanism 22 also includes components such as the aforementioned door panel 300 and shaft cover 100, whose connection structure is the same as in the previous embodiment. Figure 9 and Figure 10 Not shown in the text, and will not be described again.

[0084] Multiple sets of swing arm assemblies 530 can be provided on both sides of the base 200. These sets of swing arm assemblies 530, located on the same side of the base 200, are spaced apart along the Y-axis. Each set of swing arm assemblies 530 includes at least one main swing arm 510 and at least one auxiliary swing arm 520. It is understood that the swing arm assembly 530 may also include swing arms 500 with other structural forms; therefore, this application does not impose any special limitations on this. In the following embodiments, an example is provided where the swing arm assembly 530 includes one main swing arm 510 and one auxiliary swing arm 520.

[0085] Specifically, the connection structure between the main swing arm 510, the base 200, and the connecting block 400 provided in this embodiment can be the same as in the above embodiment. The first end of the secondary swing arm 520 provided in this embodiment is rotatably connected to the base 200, and the second end of the secondary swing arm 520 is rotatably connected to the connecting block 400. The secondary swing arm 520 can only rotate relative to the connecting block 400.

[0086] In some examples, the rotating shaft mechanism 22 may include a first rotating shaft 700, through which the secondary swing arm 520 and the connecting block 400 can be rotatably connected. For example, the second end of the secondary swing arm 520 may have a first shaft hole 521a, and the connecting block 400 may have a first connecting hole 420. The first rotating shaft 700 passes through the first shaft hole 521a and the first connecting hole 420, so that the secondary swing arm 520 and the connecting block 400 can rotate relative to each other, and the secondary swing arm 520 can only rotate circumferentially around the first rotating shaft 700 relative to the connecting block 400.

[0087] Alternatively, the first rotating shaft 700 can be fixedly connected to the connecting block 400, that is, the auxiliary swing arm 520 is sleeved on the first rotating shaft 700 through the first shaft hole 521a, so that the auxiliary swing arm 520 can rotate relative to the connecting block 400 and the first rotating shaft 700. Alternatively, the first rotating shaft 700 can be fixedly connected to the second end of the auxiliary swing arm 520, and the first rotating shaft 700 passes through the first connecting hole 420 on the connecting block 400, so that the auxiliary swing arm 520 and the first rotating shaft 700 can rotate relative to the connecting block 400. Therefore, the embodiments of this application do not impose special limitations on the arrangement of the first rotating shaft 700.

[0088] Please continue reading. Figure 9 and Figure 10 and in conjunction with reference Figure 11 and Figure 12 , Figure 11 This is a cross-sectional view of the secondary swing arm 520 of the rotating shaft mechanism 22 provided in the embodiment of this application in a folded state. Figure 12 for Figure 11 The provided schematic diagram illustrates the motion principle of the rotating shaft mechanism 22. Since the secondary swing arm 520 is rotatably connected to the connecting block 400, and the secondary swing arm 520 can only rotate relative to the connecting block 400 (i.e., there is no relative sliding between the secondary swing arm 520 and the connecting block 400), when the foldable screen terminal 01 is in the folded position, the first end of the secondary swing arm 520 is rotatably connected to the base 200, i.e., the first end of the secondary swing arm 520 abuts against the base 200, thus forming support. Furthermore, the second end of the secondary swing arm 520 is rotatably connected to the connecting block 400 via the first rotating shaft 700, meaning that the secondary swing arm 520 and the connecting block 400 can also form effective support through the first rotating shaft 700, preventing relative sliding between the secondary swing arm 520 and the connecting block 400.

[0089] Compared to Figure 7The auxiliary swing arm 520 shown in this embodiment can form an effective support between the connecting block 400 and the base 200. In the event of a drop of the foldable screen terminal 01, for example, when a collision occurs on one side of the shaft cover 100, the impact load is transmitted to the auxiliary swing arm 520 through the shaft cover 100 and the base 200. Since the auxiliary swing arm 520 and the connecting block 400 are connected by the first rotating shaft 700, they cannot slide relative to each other. Therefore, the impact load is transmitted to the connecting block 400 and the housing 21 fixedly connected to the connecting block 400 through the auxiliary swing arm 520, thereby reducing the risk of deformation of the shaft cover 100 and the base 200 in the direction closer to the foldable screen 10, which could lead to a collision or compression of the foldable screen 10. This is beneficial to improving the support strength of the rotating shaft mechanism 22 and the reliability of the overall structure.

[0090] In some examples, the rotation axis of the auxiliary swing arm 520 relative to the connecting block 400 is not collinear with the rotation axis of the main swing arm 510 relative to the connecting block 400; for example, they can be parallel to each other. Furthermore, the rotation axis of the auxiliary swing arm 520 relative to the base 200 is not collinear with the rotation axis of the main swing arm 510 relative to the base 200; for example, they can be parallel to each other. This ensures that during the rotation of the rotating shaft mechanism 22, the motion trajectories of the main swing arm 510 and the auxiliary swing arm 520 are not exactly the same, and their relative positions can be adaptively adjusted.

[0091] Please see Figure 13 , Figure 13 A comparison diagram showing the distance between the rotation axis of the main swing arm 510 and the base 200, and the distance between the rotation axis of the auxiliary swing arm 520 and the base 200, provided in this embodiment of the application. The rotation axis refers to the axis of relative rotation between the main swing arm 510 and the auxiliary swing arm 520 and the base 200. Along the aforementioned Z-axis direction, the rotation axis of the auxiliary swing arm 520 relative to the base 200 (…). Figure 13 The distance L1 between point A (as shown in the diagram) and base 200 is less than or equal to the axis of rotation of the main swing arm 510 relative to base 200. Figure 13 The distance L2 between the secondary swing arm 520 (as shown at point B) and the base 200. In this way, when the pivot mechanism 22 is in the unfolded state, the risk that the surface of the secondary swing arm 520 away from the base 200 is higher than the main swing arm 510 can be reduced, thereby reducing the risk that the secondary swing arm 520 will lift the folding screen 10 and improving the overall reliability of the structure.

[0092] And, please see Figure 14 , Figure 14This diagram compares the distances between the rotation axis of the main swing arm 510 and the housing 21, and the distances between the rotation axis of the auxiliary swing arm 520 and the housing 21, provided in this embodiment of the application. The rotation axis refers to the axis of rotation between the main swing arm 510 and the auxiliary swing arm 520 and the connecting block 400. The distance between the rotation axis of the auxiliary swing arm 520 relative to the connecting block 400 and the housing 21 can be less than or equal to the distance between the rotation axis of the main swing arm 510 relative to the connecting block 400 and the housing 21. That is, the distance between the auxiliary swing arm 520 and the housing 21 is smaller.

[0093] Therefore, a clearance groove 21a can be provided on the housing 21. A portion of the end of the auxiliary swing arm 520 connected to the connecting block 400 can be set in the clearance groove 21a. This ensures the strength of the auxiliary swing arm 520 while it is rotatably connected to the connecting block 400, without reducing the size of the end of the auxiliary swing arm 520, i.e., the radial size along the first shaft hole 521a.

[0094] Based on this, the dimensions of the secondary swing arm 520 of the aforementioned rotating shaft mechanism 22 can be calculated using the two-bar linkage rigid body guidance method. For details, please refer to... Figure 15 , Figure 15 for Figure 7 The provided schematic diagram shows the linkage mechanism formed when the rotating shaft mechanism 22 rotates to different positions, wherein... Figure 15 In the diagram, A0 represents the axis of rotational connection between the secondary swing arm 520 and the base 200. i B0 indicates the connection point between the secondary swing arm 520 and the connecting block 400, and B0 indicates the axis of rotational connection between the main swing arm 510 and the base 200. i The axis representing the rotatable connection between the main swing arm 510 and the connecting block 400 is indicated, and point P represents any point on the connecting block 400. Figure 15 In the left-middle image, the shaded area represents connector 400, and indicates that connector 400 is in an unfolded state and a folded state, respectively. Figure 15 The right-middle diagram shows the main swing arm 510 and the auxiliary swing arm 520 in the unfolded state, the folded state, and the state between the unfolded state and the folded state (the position shown in the diagram is 45°). The origin of the coordinate system is the midpoint of the line connecting the axis of rotation between the base 200 and the two auxiliary swing arms 520 on both sides.

[0095] As can be seen from the above embodiments, Figure 11 The rotating shaft mechanism 22 shown will Figure 7The sliding joints in the main swing arm 510 are replaced with revolute joints, that is, the sliding connection between the secondary swing arm 520 and the connecting block 400 is replaced with a revolute connection, so that the main swing arm 510 and the secondary swing arm 520 form a motion mechanism with four revolute joints between the base 200 and the connecting block 400. Therefore, under the premise that the various dimensional parameters of the main swing arm 510 remain unchanged, the various dimensional parameters of the secondary swing arm 520 can be calculated by the two-bar rigid body guidance method.

[0096] Specifically, please refer to Figure 16 , Figure 16 for Figure 11 The provided schematic diagram shows the linkage mechanism formed by the rotating shaft mechanism 22, wherein... Figure 16 The horizontal coordinate x corresponds to the X-axis direction mentioned above, and the vertical coordinate y corresponds to the Z-axis direction mentioned above. The uppercase letters and the origin in the figure are all aligned with... Figure 15 The meanings are the same. "P" in Pi represents any point on the connecting block 400, and "i" in Pi represents the connecting block 400 in different positions. For example, i can be 1, 2, 3, or 4, which means that the connecting block 400 is in four different positions.

[0097] and, Figure 16 In this context, δ0 represents the argument of r5, and this argument changes as the rotating shaft mechanism 22 rotates to different positions. Therefore, Δδ i This indicates the change value. r represents the line segment length; for example, r2 represents the distance from A0 to A... i The distance is the length of the secondary swing arm 520. Based on the vector closed-loop equation, we know that r6 + r2 + r5 - ρ = 0. Performing x-y decomposition and eliminating the argument of r2, we obtain the following nonlinear equation system:

[0098] 1 / 2[P ix 2 +P iy 2 +A 0x 2 +A 0y 2 -r2 2 +r5 2 ]-P ix A 0x -P iy A 0y -P ix r5cos(δ0+△δ i )+A 0x r5cos(δ0+△δ i )-P iy r5sin(δ0+△δ i )+A 0y r5sin(δ0+△δ i ) = 0. Rearranging, we get:

[0099] r5cosδ0[(A 0x -P ix cos△δ i -P iy sin△δ i ]+r5sinδ0[(P ix -A 0x sin△δ i -P iy cos△δ i ]-P iy A 0y +1 / 2(A 0y 2 -r2 2 +r5 2 )+A 0y r5sinδ0cos△δ i +A 0y r5cosδ0sin△δ i +[1 / 2(P ix 2 +P iy 2 +A 0x 2 )-A 0x P ix ].

[0100] Based on this, the parameter to be determined in the above formula is A. 0x A 0x r2, r5, δ0, the abscissa A of the axis connecting the auxiliary swing arm 520 and the base 200 is controlled by the rotation. 0x Find the optimal value. When i is 1, 2, 3, and 4, that is, when the auxiliary swing arm 520 rotates to four different positions, the distance between the axis of rotational connection between the auxiliary swing arm 520 and the base 200 and the reference boundary can be obtained by the above formula.

[0101] Please see Figure 17 , Figure 17 A graph showing the distance between the axis of rotational connection between the secondary swing arm 520 and the base 200 and the reference boundary, provided in an embodiment of this application. Figure 17 The horizontal axis represents the above A. 0x The vertical axis represents the distance between the point and the reference boundary. The reference boundary is... Figure 14 The inner wall of the housing 21 shown is the surface facing the auxiliary swing arm 520. As can be seen from the figure, A... 0x When the value is -2.194mm, the distance between this point and the reference boundary is close to 0, meaning that the distance between the auxiliary swing arm 520 and the housing 21 will not be too large, or they will interfere with each other.

[0102] Please see Figure 18, Figure 18 for Figure 15 A schematic diagram of the parameters of the two-bar linkage structure formed. The horizontal axis is A. 0x The ordinate represents the parameter value. In A... 0x The optimal parameter is -2.194mm, i.e., A. 0y The lengths of the secondary swing arm 520 are: r1 = 1.326mm, r2 = 6.528mm, r5 = 1.948mm, r3 = 1.154mm, and r1 = 0.1965mm. This allows for the calculation of the relevant dimensional parameters of the secondary swing arm 520, and, without altering the motion trajectory of the connecting block 400, [the following can be achieved]. Figure 7 The sliding pair between the auxiliary swing arm 520 and the connecting block 400 shown is replaced with... Figure 11 The rotating joint shown can further enhance the support strength of the auxiliary swing arm 520 between the base 200 and the connecting block 400.

[0103] Based on this, and building upon the above embodiments, the specific structure of the auxiliary swing arm 520 will be described in detail. Please refer to... Figure 19 , Figure 19 This is an enlarged view of the structure of the secondary swing arm 520 of the rotating shaft mechanism 22 provided in the embodiment of this application. The secondary swing arm 520 may include a first connecting part 521, a first main body 522 and a first rotating part 523. The first connecting part 521 and the first rotating part 523 are respectively fixed to both ends of the first main body 522. For example, the first connecting part 521, the first rotating part 523 and the first main body 522 can be integrally formed, that is, the secondary swing arm 520 forms an integral structure, which is beneficial to improving the overall structural strength.

[0104] The first shaft hole 521a is formed on the first connecting part 521, that is, the first rotating shaft 700 passes through the first shaft hole 521a on the first connecting part 521 and the first connecting hole 420 on the connecting block 400, so that the first connecting part 521 and the connecting block 400 are rotatably connected. In some examples, the connecting block 400 may have a first receiving groove 430, and the first connecting part 521 may be disposed in the first receiving groove 430, which helps to save the size along the Z-axis direction, that is, it can achieve thinning of the rotating shaft mechanism 22.

[0105] For example, one of each of the first connecting portion 521 and the first receiving groove 430 may be provided, or multiple of each may be provided. For instance, two first connecting portions 521 may be provided and distributed at intervals along the Y-axis direction, and two corresponding first receiving grooves 430 may be provided on the connecting block 400, with the first connecting portion 521 disposed within the corresponding first receiving groove 430. Therefore, this application embodiment does not impose any special limitations on this.

[0106] Furthermore, as can be seen from the above embodiments, the distance between the rotation axis of the auxiliary swing arm 520 relative to the connecting block 400 and the housing 21 is small. Therefore, a notch 431 can be provided on the bottom surface of the first receiving groove 430. The notch 431 extends along the Z-axis and penetrates the connecting block 400, and a portion of the first connecting part 521 can extend into the notch 431. In this way, it is not necessary to reduce the size of the connecting part along the Z-axis, which helps to ensure the strength of the connecting part.

[0107] In addition, please continue to refer to Figure 19 The first rotating part 523 of the aforementioned auxiliary swing arm 520 may be provided with a first arc-shaped groove 523a. The axis of the first arc-shaped groove 523a is parallel to a first direction, which is parallel to the rotation axis of the auxiliary swing arm 520 relative to the connecting block 400, that is, the first direction is parallel to the Y-axis direction. The aforementioned base 200 may include a base body 220 and a first slider 230. The first slider 230 is fixed on the base body 220 and extends into the first arc-shaped groove 523a.

[0108] For example, the first arc-shaped groove 523a can be provided on at least one of the two ends of the first rotating part 523 distributed along the Y-axis, so that the connection structure between the auxiliary swing arm 520 and the base 200 is arranged along the Y-axis direction, which is beneficial to save layout space along the X-axis direction, thereby reducing the size of the base 200 and the shaft cover 100 along the X-axis direction, so that when the foldable screen terminal 01 is in the folded state, it is beneficial to reduce the thickness of the terminal device.

[0109] It is understood that both ends of the first rotating part 523 may be provided with a first arc-shaped groove 523a, and correspondingly, two first sliders 230 are provided on the base body 220, with each first slider 230 extending into its corresponding first arc-shaped groove 523a. Alternatively, either end of the first rotating part 523 may have a first arc-shaped groove 523a, and the base body 220 may have a corresponding first slider 230 extending into the first arc-shaped groove 523a. Therefore, the embodiments of this application do not impose any special limitations on the number or position of the first arc-shaped grooves 523a.

[0110] For other examples, please refer to [link / reference]. Figure 19Along the Y-axis, one of the two end faces at both ends of the first rotating part 523 can form a cam surface 523b. In this case, the rotating shaft mechanism 22 may also include a damping assembly (not shown in the figure), which may include a cam support and an elastic element (e.g., a spring). The cam support is slidably connected to the base body 220. The cam support and the first rotating part 523 of the secondary swing arm 520 are distributed along the Y-axis. The surface of the cam support facing the first rotating part 523 also forms a cam surface 523b, and the cam surface 523b of the first rotating part 523 abuts against the cam surface 523b of the cam support.

[0111] Because the cam surface 523b has alternating protrusions and concaves, the distance between the first rotating part 523 and the cam support is minimal when the concaves and protrusions of the two cam surfaces 523b abut against each other; the distance between the first rotating part 523 and the cam support is maximum when the protrusions of the two cam surfaces 523b abut against each other. During the rotation of the secondary swing arm 520, since the secondary swing arm 520 cannot move along the Y-axis, it can push the cam support to move along the Y-axis, thereby compressing the elastic element and generating damping force to improve the folding feel during use.

[0112] In addition, please continue to refer to Figure 19 and in conjunction with reference Figure 20 , Figure 20 This is a structural view of the rotating shaft mechanism 22 provided in the embodiment of this application from another perspective. Along the Y-axis direction, the cam surface 523b on the first rotating part 523 can be set at the end of the first rotating part 523 away from the main swing arm 510, so that the distance between the main swing arm 510 and the auxiliary swing arm 520 along the Y-axis direction is reduced. When the main swing arm 510 and the auxiliary swing arm 520 are connected to the same connecting block 400, it is beneficial to reduce the size of the connecting block 400, so as to save layout space and improve the compactness of the overall structure.

[0113] Based on this, please continue to refer to Figure 19 and Figure 20 and in conjunction with reference Figure 21 , Figure 21This is an enlarged view of the secondary swing arm of the rotating shaft mechanism 22 provided in this application embodiment. The base 200 of the rotating shaft mechanism 22 may further include a first limiting block 240, which is fixed to the base body 220. A first limiting groove 523c may be formed on the surface of the first rotating part 523 distributed along the thickness direction (i.e., the Z-axis direction). The first limiting block 240 extends into the first limiting groove 523c. During the rotation of the secondary swing arm 520 relative to the base 200, that is, during the rotation of the secondary swing arm 520 between the unfolded state and the folded state, the first limiting block 240 slides along the first limiting groove 523c. In this way, the limiting structure formed by the cooperation of the first limiting block 240 and the first limiting groove 523c can further limit the rotation of the secondary swing arm 520.

[0114] For example, the bottom surface of the first limiting groove 523c and the surface of the first limiting block 240 facing the bottom surface of the first limiting groove 523c can both form an arc surface. The axis of the arc surface coincides with the axis of the first arc-shaped groove 523a, thereby ensuring the rotational displacement of the auxiliary swing arm 520, reducing the risk of the auxiliary swing arm 520 deviating during rotation, and improving the reliability of the overall structure.

[0115] Furthermore, a first through hole 522a may be provided on the secondary swing arm 520. For example, the first through hole 522a may be provided on the side of the first main body 522 near the first rotating part 523. When the rotating shaft mechanism 22 is in the unfolded state, the first limiting block 240 can pass through the first through hole 522a. When the rotating shaft mechanism 22 is in the folded state, the first limiting block 240 is separated from the first through hole 522a. In this way, during the rotation of the secondary swing arm 520, the first limiting block 240 and the first limiting groove 523c cooperate to limit the movement trajectory of the secondary swing arm 520, while also preventing the first limiting block 240 and the secondary swing arm 520 from abutting against each other and affecting the rotation of the secondary swing arm 520. Furthermore, when the rotating shaft mechanism 22 is in the unfolded state, the first limiting block 240 passes through the first through hole 522a and can also limit the position of the secondary swing arm 520 to prevent the secondary swing arm 520 from moving along the Y-axis, which helps to further improve the reliability of the overall structure.

[0116] In other examples, please refer to Figure 22 , Figure 22 for Figure 20A partially enlarged view of the secondary swing arm 520 of the provided pivot mechanism 22 shows that, when the pivot mechanism 22 is in the unfolded state, at least a portion of the surface of the first rotating part 523 away from the base body 220 is in the same plane as the surface of the first limiting block 240 away from the base body 220. For example, when the pivot mechanism 22 is in the unfolded state, the surface of the first rotating part 523 away from the base body 220 is the first surface 523d. The area on the first surface 523d ​​away from the first body 522 can be in the same plane as the surface of the first limiting block 240 away from the base body 220, and parallel to the XY plane, so that the two can provide better support for the folding screen 10.

[0117] Furthermore, the first surfaces 523d ​​on the two auxiliary swing arms 520 on both sides of the base 200 have the same structure. Therefore, along the X-axis, the areas where the first surfaces 523d ​​of the two auxiliary swing arms 520 are close to each other are in the same plane, which helps to further improve the support effect on the folding screen 10.

[0118] The above is a detailed description of the secondary swing arm 520 and the connecting structure of the rotating shaft mechanism 22 provided in the embodiments of this application. The following is a detailed description of the main swing arm 510 and the connecting structure of the rotating shaft mechanism 22 provided in the embodiments of this application. The first end of the main swing arm 510 is rotatably connected to the base 200, and the second end of the main swing arm 510 is rotatably connected to the connecting block 400. The main swing arm 510 can only rotate relative to the connecting block 400.

[0119] Specifically, please refer to Figure 23 , Figure 23 This is an enlarged view of the main swing arm 510 of the rotating shaft mechanism 22 provided in this embodiment. The rotating shaft mechanism 22 may further include a second rotating shaft 710, through which the main swing arm 510 and the connecting block 400 are rotatably connected. For example, a second shaft hole 511a may be provided at the second end of the main swing arm 510, and a second connecting hole 440 may be provided on the connecting block 400. The second rotating shaft 710 passes sequentially through the second shaft hole 511a and the second connecting hole 440, so that the main swing arm 510 and the connecting block 400 can rotate relative to each other, and the main swing arm 510 can only rotate circumferentially around the second rotating shaft 710 relative to the connecting block 400.

[0120] Alternatively, the second rotating shaft 710 can be fixedly connected to the connecting block 400, that is, the main swing arm 510 is sleeved on the second rotating shaft 710 through the second shaft hole 511a, so that the main swing arm 510 can rotate relative to the connecting block 400 and the second rotating shaft 710. Alternatively, the first rotating shaft 700 can be fixedly connected to the second end of the main swing arm 510, and the second rotating shaft 710 passes through the second connecting hole 440 on the connecting block 400, so that the main swing arm 510 and the second rotating shaft 710 can rotate relative to the connecting block 400. Therefore, the embodiments of this application do not impose special limitations on the arrangement of the second rotating shaft 710.

[0121] In some embodiments, the main swing arm 510 may include a second connecting portion 511, a second main body 512, and a second rotating portion 513. The second connecting portion 511 and the second rotating portion 513 are respectively fixed to both ends of the second main body 512. For example, the second connecting portion 511, the second rotating portion 513, and the second main body 512 can be integrally formed, that is, the main swing arm 510 forms an integral structure, which is beneficial to improving the overall structural strength.

[0122] The second shaft hole 511a is formed on the second connecting part 511. In some examples, a second receiving groove 450 may be formed on the connecting block 400, and the second connecting part 511 may be disposed in the second receiving groove 450, which helps to save the size along the Z-axis direction, that is, it can achieve the thinning of the rotating shaft mechanism 22.

[0123] Furthermore, each of the aforementioned second connecting portion 511 and second receiving groove 450 can be provided as a single unit. Alternatively, multiple second connecting portions 511 and multiple second receiving grooves 450 can be provided. For example, two second connecting portions 511 can be provided and spaced apart along the Y-axis direction, and two corresponding second receiving grooves 450 can be formed on the connecting block 400, with the second connecting portion 511 disposed within the corresponding second receiving groove 450. Therefore, this embodiment of the application does not impose any special limitations in this regard.

[0124] In this way, since the main swing arm 510 and the auxiliary swing arm 520 of the swing arm assembly 530 are both connected to the same connecting block 400, and both are rotatably connected to the connecting block 400 through a pivot, when the foldable screen terminal 01 is in the folded state, the main swing arm 510 and the auxiliary swing arm 520 can form a support between the base 200 and the connecting block 400. This allows external impacts to be transmitted to the connecting block 400 through the main swing arm 510 and the auxiliary swing arm 520, and further to the housing 21. This effectively disperses the external impact force, reducing the risk of deformation of the base 200 and the shaft cover 100 towards the foldable screen 10, which could cause collisions or compression to the foldable screen 10. This also helps to further improve the support strength of the pivot mechanism 22 and the reliability of the overall structure.

[0125] Furthermore, the second rotating part 513 of the aforementioned main swing arm 510 and the base 200 can be connected by... Figure 5 and Figure 6 The structure shown achieves a rotatable connection. Alternatively, a second arc-shaped groove 513a may be provided on the second rotating part 513. The axis of the second arc-shaped groove 513a is parallel to a second direction, which is parallel to the rotation axis of the main swing arm 510 relative to the connecting block 400, i.e., the second direction is parallel to the Y-axis direction. The base 200 also includes a second slider 250, which is fixed to the base body 220 and extends into the second arc-shaped groove 513a.

[0126] For example, the second arc-shaped groove 513a can be provided on at least one of the two ends of the second rotating part 513 distributed along the Y-axis direction, so that the connection structure between the main swing arm 510 and the base 200 is arranged along the Y-axis direction, which is beneficial to save layout space along the X-axis direction, thereby reducing the size of the base 200 and the shaft cover 100 along the X-axis direction, so that when the foldable screen terminal 01 is in the folded state, it is beneficial to reduce the thickness of the terminal device.

[0127] It is understood that both ends of the second rotating part 513 may be provided with second arc-shaped sliding grooves 513a, and correspondingly, two second sliders 250 are provided on the base body 220, with each second slider 250 extending into its corresponding second arc-shaped sliding groove 513a. Alternatively, either end of the second rotating part 513 may have a second arc-shaped sliding groove 513a, and the base body 220 may have a corresponding second slider 250 extending into the first arc-shaped sliding groove 523a. Therefore, the embodiments of this application do not impose any special limitations on the number or position of the second arc-shaped sliding grooves 513a.

[0128] Based on this, please refer to Figure 24 and Figure 25 , Figure 24 This is an enlarged view of the main swing arm 510 of the rotating shaft mechanism 22 provided in the embodiments of this application from another perspective. Figure 25 for Figure 20 A partially enlarged view of the main swing arm 510 of the provided rotating shaft mechanism 22 shows that the base 200 of the rotating shaft mechanism 22 may also include a second limiting block 260, which is fixed to the base body 220. A second limiting groove 513b may be formed on the surface of the second rotating part 513 distributed along the thickness direction (i.e., the Z-axis direction). The second limiting block 260 extends into the second limiting groove 513b, and slides along the second limiting groove 513b during the rotation of the main swing arm 510 relative to the base 200.

[0129] The bottom surface of the second limiting groove 513b and the surface of the second limiting block 260 facing the bottom surface of the second limiting groove 513b can both form arc surfaces, and the axis of the arc surface between the two coincides with the axis of the second arc-shaped groove 513a. Furthermore, a second through hole 512a can be provided on the second main body 512 of the main swing arm 510. When the rotating shaft mechanism 22 is in the unfolded state, the second limiting block 260 passes through the second through hole 512a; when the rotating shaft mechanism 22 is in the folded state, the second limiting block 260 separates from the second through hole 512a. Therefore, the limiting structure formed between the main swing arm 510 and the base 200 is similar to the limiting structure between the auxiliary swing arm 520 and the base 200 described above. Therefore, the limiting effect of the limiting structure between the main swing arm 510 and the base 200 will not be described again.

[0130] Furthermore, when the pivot mechanism 22 is in the unfolded state, at least a portion of the surface of the second rotating part 513 away from the base body 220 is in the same plane as the surface of the second limiting block 260 away from the base body 220. For example, when the pivot mechanism 22 is in the unfolded state, the surface of the second rotating part 513 away from the base body 220 is the second surface 513c, and the area on the second surface 513c away from the second main body 512 can be in the same plane as the surface of the second limiting block 260 away from the base body 220, so that the two can provide better support for the folding screen 10.

[0131] Furthermore, the second surfaces 513c on the two main swing arms 510 located on both sides of the base 200 have the same structure. Therefore, along the X-axis direction, the areas where the second surfaces 513c of the two main swing arms 510 are close to each other are in the same plane, which helps to further improve the support effect on the folding screen 10.

[0132] In other examples, when the pivot mechanism 22 is in the deployed state, a portion of the surface of the secondary swing arm 520 (i.e. Figure 22 A portion of the first surface 523d ​​of the first rotating part 523 shown) and a portion of the surface of the main swing arm 510 (i.e. Figure 25 The second surfaces 513c of the second rotating part 513 shown can be in the same plane, so that the main swing arm 510 and the auxiliary swing arm 520 of the swing arm assembly 530 can simultaneously provide effective support for the folding screen 10. Multiple swing arm assemblies 530 can further enhance the support effect on the folding screen 10, which helps to ensure the flatness of the folding screen 10 when it is unfolded.

[0133] In other embodiments, please continue to refer to Figure 24 and Figure 25 and in conjunction with reference Figure 26 , Figure 26This is an enlarged view of the main swing arm 510 of the rotating shaft mechanism 22 provided in this application embodiment in a folded state. A protrusion 514 may also be provided on the second rotating portion 513 of the main swing arm 510. This protrusion 514 may be located at the edge of the second rotating portion 513 away from the second main body 512. A groove 261 is provided on the surface of the second limiting block 260 facing the bottom surface of the second limiting groove 513b (i.e., the arc surface of the second limiting block 260). The extending direction of the groove 261 is the same as the extending direction of the second limiting groove 513b. When the rotating shaft mechanism 22 is in a folded state, the protrusion 514 extends into the groove 261. When the rotating shaft mechanism 22 is in an unfolded state, the protrusion 514 is outside the groove 261.

[0134] In this way, when the rotating shaft mechanism 22 is in the unfolded state, the second limiting block 260 extends into the second through hole 512a on the second main body 512 (e.g., Figure 25 As shown), to limit the movement of the main swing arm 510. When the pivot mechanism 22 is folded, the protrusion 514 extends into the groove 261 (as shown). Figure 26 As shown, this limits the movement of the main swing arm 510. This improves the structural reliability of the main swing arm 510, reduces the risk of displacement, and enhances its structural stability.

[0135] Furthermore, during the rotation of the pivot mechanism 22 between the unfolded and folded states, the protrusion 514 can slide along the groove 261, thereby further limiting the rotation trajectory of the main swing arm 510 to ensure that the main swing arm 510 rotates around the axis of the second arc-shaped slide groove 513a, which is conducive to further improving the reliability of the overall structure.

[0136] It is understood that in other possible embodiments, a limiting structure formed by the protrusion 514 and the groove 261 may also be provided between the first rotating part 523 of the auxiliary swing arm 520 and the first limiting block 240 of the base 200. Therefore, this application embodiment does not impose any special limitation on this.

[0137] Based on the above embodiments, please refer to Figure 27 , Figure 27 The diagram shows the structure of the base 200 of the rotating shaft mechanism 22 provided in this application embodiment. The base 200 may also include a boss 270, which is fixed to the base body 220. The boss 270 may be provided with the first slider 230 and the second slider 250 on two side walls distributed along the Y-axis direction. That is, the first rotating part 523 and the second rotating part 513 are respectively provided on both sides of the boss 270, so that the first slider 230 extends into the first arc-shaped slide groove 523a and the second slider 250 extends into the second arc-shaped slide groove 513a.

[0138] The first slider 230 and the base body 220 are spaced apart so that the end of the first rotating part 523 extends between the first slider 230 and the base body 220, that is, the first slider 230 extends into the first arc-shaped groove 523a on the first rotating part 523. Furthermore, the surface of the first slider 230 facing the inner wall of the first arc-shaped groove 523a can be formed into an arc surface and is coaxially arranged with the first arc-shaped groove 523a, thereby improving the reliability of the first slider 230 sliding within the first groove.

[0139] Accordingly, the second slider 250 and the base body 220 are spaced apart so that the end of the second rotating part 513 extends between the second slider 250 and the base body 220, that is, the second slider 250 extends into the second arc-shaped groove 513a on the second rotating part 513. Furthermore, the surface of the second slider 250 facing the inner wall of the second arc-shaped groove 513a can be formed into an arc surface and is coaxially arranged with the second arc-shaped groove 513a, thereby improving the reliability of the second slider 250 sliding within the second groove.

[0140] In this way, by fixing the first slider 230 and the second slider 250 to the two side walls of the boss 270 respectively, for example, the first slider 230, the second slider 250, and the boss 270 can be integrally formed, which helps to improve the structural strength of the first slider 230 and the second slider 250. This reduces the risk that the first slider 230 and the second slider 250 may be damaged during the rotation of the rotating shaft mechanism 22, causing the main swing arm 510 or the auxiliary swing arm 520 to fail to rotate normally, thus improving the reliability of the overall structure. Furthermore, since both the first slider 230 and the second slider 250 are fixed to the boss 270, it helps to improve the compactness of the overall structure.

[0141] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0142] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism, characterized in that, include: Base; A connecting block, wherein the connecting block is disposed on one side of the base; The main swing arm has one end rotatably connected to the base and the other end rotatably connected to the connecting block. The main swing arm can only rotate relative to the connecting block. A secondary swing arm, one end of which is rotatably connected to the base, and the other end of which is rotatably connected to the connecting block. The secondary swing arm can only rotate relative to the connecting block.

2. The rotating shaft mechanism according to claim 1, characterized in that, The rotation axis of the main swing arm relative to the connecting block is parallel to the rotation axis of the auxiliary swing arm relative to the connecting block.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that, The axis of rotation of the main swing arm relative to the base is parallel to the axis of rotation of the auxiliary swing arm relative to the base.

4. The rotating shaft mechanism according to any one of claims 1-3, characterized in that, Along the thickness direction of the rotating shaft mechanism, the distance between the axis of rotation of the auxiliary swing arm relative to the base and the base is less than or equal to the distance between the axis of rotation of the main swing arm relative to the base and the base.

5. The rotating shaft mechanism according to any one of claims 1-4, characterized in that, The rotating shaft mechanism includes a first rotating shaft, and the auxiliary swing arm and the connecting block are rotatably connected through the first rotating shaft.

6. The rotating shaft mechanism according to claim 5, characterized in that, The auxiliary swing arm has a first shaft hole, the connecting block has a first connecting hole, and the first rotating shaft passes through the first shaft hole and the first connecting hole.

7. The rotating shaft mechanism according to claim 6, characterized in that, The connecting block has a first receiving groove. The auxiliary swing arm includes a first body and a first connecting part. The first connecting part is fixed to the end of the first body away from the base. The first shaft hole is opened on the first connecting part. The first connecting part is disposed in the first receiving groove.

8. The rotating shaft mechanism according to claim 7, characterized in that, A notch is formed on the bottom surface of the first receiving groove. The notch extends along the thickness direction of the connecting block and penetrates the connecting block. A portion of the first connecting part is located within the notch.

9. The rotating shaft mechanism according to claim 7, characterized in that, The auxiliary swing arm further includes a first rotating part, which is fixed to the end of the first body away from the first connecting part. The first rotating part is provided with a first arc-shaped groove, the axis of which is parallel to a first direction, which is parallel to the rotation axis of the auxiliary swing arm relative to the connecting block. The base includes a base body and a first slider, which is disposed on the base body and extends into the first arc-shaped groove.

10. The rotating shaft mechanism according to claim 9, characterized in that, The first arc-shaped groove is provided at the end of the first rotating part distributed along the first direction.

11. The rotating shaft mechanism according to claim 10, characterized in that, The first arc-shaped groove is formed at one end of the first connecting portion near the main swing arm; a cam surface is formed on the end face of the first connecting portion away from the main swing arm.

12. The rotating shaft mechanism according to claim 10, characterized in that, A first limiting groove is formed on the surface of the first rotating part distributed along the thickness direction; the base also includes a first limiting block, which is disposed on the base body and extends into the first limiting groove; during the rotation of the auxiliary swing arm relative to the base, the first limiting block slides along the first limiting groove.

13. The rotating shaft mechanism according to claim 12, characterized in that, The bottom surface of the first limiting groove and the surface of the first limiting block facing the bottom surface of the first limiting groove are both formed into arc surfaces, and the axis of the arc surface coincides with the axis of the first arc groove.

14. The rotating shaft mechanism according to claim 12, characterized in that, The first main body has a first through hole, and the rotating shaft mechanism can rotate between an unfolded state and a folded state. When the rotating shaft mechanism is in the unfolded state, the first limiting block passes through the first through hole. When the rotating shaft mechanism is in the folded state, the first limiting block is separated from the first through hole.

15. The rotating shaft mechanism according to any one of claims 1-14, characterized in that, The rotating shaft mechanism includes a second rotating shaft, and the main swing arm and the connecting block are rotatably connected through the second rotating shaft.

16. The rotating shaft mechanism according to claim 15, characterized in that, The main swing arm has a second shaft hole, the connecting block has a second connecting hole, and the second rotating shaft passes through the second shaft hole and the second connecting hole.

17. The rotating shaft mechanism according to claim 16, characterized in that, The connecting block is provided with a second receiving groove. The main swing arm includes a second body and a second connecting part. The second connecting part is fixed to the end of the second body away from the base. The second shaft hole is opened on the second connecting part. The second connecting part is disposed in the second receiving groove.

18. The rotating shaft mechanism according to claim 17, characterized in that, The main swing arm further includes a second rotating part, which is fixed to the end of the second main body away from the second connecting part. The second rotating part is provided with a second arc-shaped sliding groove, the axis of which is parallel to a second direction, which is parallel to the rotation axis of the main swing arm relative to the connecting block. The base includes a base body and a second slider, which is disposed on the base body and extends into the second arc-shaped sliding groove.

19. The rotating shaft mechanism according to claim 18, characterized in that, The second rotating part is provided with the second arc-shaped sliding groove at both ends distributed along the second direction, and the base body is provided with two second sliders respectively, which extend into the corresponding second arc-shaped sliding groove.

20. The rotating shaft mechanism according to claim 19, characterized in that, A second limiting groove is formed on the surface of the second rotating part distributed along the thickness direction; the base also includes a second limiting block, which is disposed on the base body and extends into the second limiting groove; during the rotation of the main swing arm relative to the base, the second limiting block slides along the second limiting groove.

21. The rotating shaft mechanism according to claim 20, characterized in that, The second main body has a second through hole, and the rotating shaft mechanism can rotate between an unfolded state and a folded state. When the rotating shaft mechanism is in the unfolded state, the second limiting block passes through the second through hole. When the rotating shaft mechanism is in the folded state, the second limiting block is separated from the second through hole.

22. The rotating shaft mechanism according to claim 20, characterized in that, The second rotating part is provided with a protrusion, and the second limiting block has a groove on its surface facing the bottom surface of the second limiting slide groove. The extension direction of the groove is the same as the extension direction of the second limiting slide groove. When the rotating shaft mechanism is in the folded state, the protrusion extends into the groove. When the rotating shaft mechanism is in the unfolded state, the protrusion is outside the groove.

23. A foldable screen terminal, characterized in that, include: Multiple housings; At least one pivot mechanism, as described in any one of claims 1-22, wherein two adjacent housings are connected by one of the pivot mechanisms.

24. The foldable screen terminal according to claim 23, characterized in that, The connecting block of the rotating shaft mechanism is fixedly connected to the housing. A clearance groove is provided on the surface of the housing facing the connecting block. A portion of the end of the secondary swing arm of the rotating shaft mechanism that connects to the connecting block is located within the clearance groove.

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