A rotating shaft mechanism and an assembling method thereof, and a foldable device

Abstract

The application provides a rotating shaft mechanism, an assembling method thereof and a foldable device. The rotating shaft mechanism comprises a main shaft, connecting rods, support members and a disassembling member. The connecting rods are pivotally connected to the two sides of the main shaft. The support members on the two sides of the main shaft are movably connected to the corresponding connecting rods, so that the rotating shaft mechanism can be switched between an unfolded state and a closed state. The disassembling member is arranged on the connecting rod or the main shaft. The disassembling member is used as a rotating stop of the connecting rod, and is clamped between the connecting rod and the main shaft when the rotating shaft mechanism is in the unfolded state. The disassembling member is used as a key part of the support members on the two sides of the main shaft, and a disassembling member with a proper size can make the unfolding angle reach a preset value. The unfolding angle of the rotating shaft mechanism can be determined by the single size of the distance between the two side surfaces of the disassembling member in the clamping direction, and the size chain is shortened. If the unfolding angle of the rotating shaft mechanism in the assembled state is poor, the disassembling member can be directly disassembled from the rotating shaft mechanism, and a disassembling member with a proper size is installed to make the unfolding angle reach the preset value, so that the unfolding angle correction is realized quickly and at low cost.

Description

Technical Field

[0001] This application relates to the field of hinge technology for foldable devices, and more particularly to a hinge mechanism and its assembly method, and a foldable device. Background Technology

[0002] Foldable devices (such as foldable flexible screen phones) achieve the unfolding and folding of two shells through a central hinge mechanism. The hinge mechanism includes a main shaft, connecting rods on both sides of the main shaft, and support components. The connecting rods on both sides of the main shaft are pivotally connected to the main shaft, and the support components support the flexible screen. When the hinge mechanism is in the flattened state, the connecting rods on both sides of the main shaft abut against the main shaft, and the flattening angle formed by the support components on both sides of the main shaft needs to reach a preset value of 180°. However, due to constraints such as production costs, fluctuations in part dimensions, and assembly processes, the tolerance range of the flattening angle of the hinge mechanism is relatively large (greater than ±1.5°), making it difficult to achieve the preset value of 180° in actual assembly. The area on the flexible screen corresponding to the hinge mechanism has poor flatness, resulting in poor light and shadow display effects and low overall flattening precision. Summary of the Invention

[0003] This application provides a rotating shaft mechanism and its assembly method, as well as a foldable device, which solves the problem of large tolerance zones in the flattening angle of related art rotating shaft mechanisms.

[0004] The embodiments of this application adopt the following technical solutions:

[0005] In a first aspect, embodiments of this application provide a rotating shaft mechanism, comprising: a main shaft, a plurality of connecting rods, paired support members, and one or more disassembly members. One or more connecting rods are respectively disposed on both sides of the main shaft along its width direction, with one end of each connecting rod pivotally connected to the main shaft. Each pair of support members is respectively disposed on both sides of the main shaft along its width direction, with the support member on the same side of the main shaft corresponding to a connecting rod. The support member can be movably connected to the connecting rod of the corresponding support member, and each support member has a support surface. The connecting rods located on both sides of the main shaft can rotate relative to the main shaft, and the support member can follow the movement of the connecting rod of the corresponding support member, thereby switching the rotating shaft mechanism between a flattened state and a closed state. Disassembly members are provided on the main shaft or at least one connecting rod. When the rotating shaft mechanism is in the flattened state, the disassembly member is clamped between the connecting rod of the corresponding disassembly member and the main shaft.

[0006] The rotating shaft mechanism provided in this embodiment has connecting rods pivotally connected to both sides of the main shaft. Support members on both sides of the main shaft are movably connected to the corresponding connecting rods, enabling the rotating shaft mechanism to switch between a flattened state and a closed state. A disassembly piece is provided on the connecting rod or main shaft, serving as a rotation stop for the connecting rod. When the rotating shaft mechanism is in the flattened state, the disassembly piece is clamped between the connecting rod and the main shaft. The disassembly piece is a key component affecting the flattening angle between the supports on both sides of the main shaft. The dimensions of the disassembly piece are stable and can be accurately measured or controlled. Using a disassembly piece of appropriate size allows the flattening angle to reach a preset value. Unlike related rotating shaft mechanisms, this embodiment does not require consideration of the dimensions of multiple parts, including the main shaft, connecting shaft or virtual shaft, connecting rods on both sides, and supports on both sides. The dimensional tolerances of these parts can be relaxed, reducing component costs. It also eliminates the need to consider the difficulty in accurately measuring the arc-shaped arms and arc-shaped grooves in the virtual shaft. Compared to the long dimensional chain of multiple parts in related rotating shaft mechanisms, the flattening angle of this rotating shaft mechanism only requires considering the single dimension of the distance between the disassembly pieces on opposite sides in the clamping direction, thus shortening the dimensional chain. If the flattening angle of the rotating shaft mechanism in the assembled state is not good, the disassembled parts can be directly removed from the rotating shaft mechanism, and then the disassembled parts of appropriate size can be installed to make the flattening angle reach the preset value. This eliminates the need for complete disassembly and reassembly of the rotating shaft mechanism as required by related technologies, achieving fast and low-cost flattening angle correction and improving the yield and production capacity of the rotating shaft mechanism.

[0007] In one alternative implementation, the support member and the connecting rod are movably connected, and the support member can move with the connecting rod when the connecting rod rotates relative to the main shaft. The movable connection between the support member and the connecting rod can be a sliding connection, a pivotal or rotatable connection, or a movable connection between the support member and the connecting rod via a predetermined structural member.

[0008] In one alternative implementation, the spindle is flat and strip-shaped, making the spindle structure compact. The spindle includes a first shell and a second shell stacked together, and the first shell and the second shell can be connected by fasteners, snap-fits, or other means.

[0009] In one alternative implementation, the support member is plate-shaped, with a compact structure and small footprint. When the pivot mechanism is in a flattened state, the support members on both sides of the main shaft can reliably support the flexible screen.

[0010] In one alternative implementation, the connecting rod and the main shaft are connected by a connecting shaft. The connecting shaft can rotate about the axis of the connecting hole, achieving a rotatable connection between the two parts.

[0011] In one alternative implementation, the main spindle is provided with a connecting shaft, and the connecting rod is provided with a connecting hole. The connecting shaft and the connecting hole are rotatably engaged, so that the connecting rod is rotatably connected to the main spindle.

[0012] In one alternative implementation, the connecting rod and the main shaft are connected by a virtual axis. An arc-shaped arm is slidably mounted within an arc-shaped groove, enabling a rotational connection between the connecting rod and the main shaft. This results in a smaller footprint for the rotating shaft mechanism.

[0013] In one alternative implementation, the connecting rod has an arc arm and the main shaft has an arc groove. The arc arm and the arc groove are slidably engaged, so that the connecting rod is rotatably connected to the main shaft.

[0014] In one alternative implementation, the spindle includes a first housing and a second housing. The first housing has a concave first arc surface, and the second housing has a convex second arc surface. The axes of the first and second arc surfaces coincide. When the first housing is mounted on the second housing, the first and second arc surfaces form an arc groove. The arc arm and the arc groove slide together to achieve a rotational connection between the connecting rod and the spindle.

[0015] In one alternative implementation, the arc groove can be directly formed on the spindle, and the arc arm and the arc groove slide together to achieve a rotational connection between the connecting rod and the spindle.

[0016] In one alternative implementation, the arc arms on the connecting rods on both sides of the main shaft can be staggered along the axial direction of the main shaft, and multiple arc grooves on the main shaft can be staggered along the axial direction of the main shaft. Within a limited space, arc arms and arc grooves with larger diameters can be provided to improve structural strength.

[0017] In one alternative implementation, the connecting rod or spindle has a positioning part, and the disassembled part is positioned and mounted on the positioning part. The positioning part allows the disassembled part to be quickly positioned in a predetermined position on the connecting rod or spindle, improving assembly efficiency.

[0018] In one alternative implementation, the positioning part includes a groove extending along a predetermined path. The groove has an opening through which the component can enter and exit and be slidably mounted. The opening of the groove allows the component to enter and exit. Assembly and disassembly of the component are convenient.

[0019] In one alternative implementation, the positioning part includes a protrusion, and the disassembled part has a positioning hole that matches the protrusion. By inserting the protrusion into the positioning hole, the disassembled part can be quickly positioned and installed at a predetermined position on the connecting rod or spindle.

[0020] In one alternative implementation, the main shaft has a first horizontal mating surface, and the connecting rod has a second horizontal mating surface. A disassembly piece is provided on the first horizontal mating surface or at least one of the second horizontal mating surfaces. When the rotating shaft mechanism is in a flattened state, the first and second horizontal mating surfaces face each other, and the disassembly piece is clamped between the corresponding first and second horizontal mating surfaces.

[0021] When disassembly parts are respectively set on the second horizontal mating surfaces of the connecting rods on both sides of the first horizontal mating surface of the main shaft, during the process of the rotating shaft mechanism switching from the closed state to the flattened state, the connecting rods unfold and rotate relative to the main shaft. The second horizontal mating surfaces of the connecting rods gradually approach the first horizontal mating surface of the main shaft until the opposite sides of the disassembly parts abut against the first and second horizontal mating surfaces respectively, thereby stopping the rotation of the connecting rods on both sides of the main shaft.

[0022] When a disassembly piece is installed on one side of the first horizontal mating surface of the main shaft or on the second horizontal mating surface of a single-sided connecting rod, for the side of the rotating shaft mechanism with the disassembly piece, the connecting rod on the side with the disassembly piece is stopped from rotating by the opposite sides of the disassembly piece abutting against the first and second horizontal mating surfaces of the corresponding disassembly piece. For the side of the rotating shaft mechanism without the disassembly piece, during the process of the rotating shaft mechanism switching from the closed state to the flattened state, the connecting rod unfolds and rotates relative to the main shaft, and the second horizontal mating surface of the connecting rod gradually approaches the first horizontal mating surface of the main shaft until the second horizontal mating surface abuts against the first horizontal mating surface, thus stopping the rotation of the connecting rod on the side without the disassembly piece.

[0023] In one alternative implementation, a first horizontal mating surface is formed on the surface of the spindle; or, the spindle has bosses on both sides, and the first horizontal mating surface is formed on the bosses.

[0024] In one alternative implementation, the component includes a sheet-like portion. When the shaft mechanism is in a flattened state, the opposite sides of the sheet-like portion along the thickness direction of the main shaft abut against the first horizontal mating surface and the second horizontal mating surface, respectively. The sheet-like portion has a small dimension in the thickness direction of the main shaft, occupying less space, making the overall structure of the shaft mechanism compact.

[0025] In one alternative implementation, the component further includes a first connecting portion that connects to the sheet-like portion. This component structure is easy to form and assemble.

[0026] In one alternative implementation, the connecting rod has a groove for sliding installation of the disassembled component. The groove extends along the length of the connecting rod, and the opening of the groove is located on one side of the connecting rod in the X direction when it is in the flattened state. The disassembled component can easily enter and exit the groove through the opening.

[0027] In one alternative implementation, the spindle has two first vertical mating surfaces distributed opposite to each other along the width direction of the spindle, and the connecting rod has a second vertical mating surface. A disassembly piece is provided on at least one of the first vertical mating surfaces or at least one of the second vertical mating surfaces. When the rotating shaft mechanism is in a flattened state, the first and second vertical mating surfaces face each other, and the disassembly piece is sandwiched between the corresponding first and second vertical mating surfaces.

[0028] In one alternative implementation, when a disassembly piece is installed on the first vertical mating surface on both sides of the spindle or the second vertical mating surface on both sides of the connecting rod, during the process of the rotating shaft mechanism switching from the closed state to the flattened state, the connecting rod unfolds and rotates relative to the spindle. The second vertical mating surface of the connecting rod gradually approaches the first vertical mating surface of the spindle until the opposite sides of the disassembly piece abut against the first vertical mating surface and the second vertical mating surface respectively, thereby stopping the rotation of the connecting rods on both sides of the spindle.

[0029] When a disassembly piece is installed on the first vertical mating surface of a single side of the main shaft or the second vertical mating surface of a single-side connecting rod, for the side of the rotating shaft mechanism with the disassembly piece, the connecting rod on the side with the disassembly piece is stopped by its opposite sides abutting against the first and second vertical mating surfaces of the corresponding disassembly piece. For the side of the rotating shaft mechanism without the disassembly piece, during the process of switching the rotating shaft mechanism from the closed state to the flattened state, the connecting rod unfolds and rotates relative to the main shaft. The second vertical mating surface of the connecting rod gradually approaches the first vertical mating surface of the main shaft until the second vertical mating surface abuts against the first vertical mating surface, thus stopping the rotation of the connecting rod on the side without the disassembly piece.

[0030] In one optional implementation, the disassembled component may include a mating portion; when the rotating shaft mechanism is in a flattened state, the opposite sides of the mating portion abut against a first vertical mating surface and a second vertical mating surface, respectively. One side of the disassembled component abuts against the first vertical mating surface, and the other side of the disassembled component abuts against the second vertical mating surface. The mating portion of the disassembled component is used as a vertical stop surface, and the mating portion is set to a predetermined size along the X direction. The mating portion is sandwiched between the first vertical mating surface and the second vertical mating surface of the corresponding mating portion, so that the flattening angle reaches a preset value.

[0031] In one alternative implementation, the component further includes a second connecting part that connects to the mating part, and the second connecting part connects to a connecting rod or a main shaft. This component is easy to form and assemble.

[0032] In one alternative implementation, the connecting rod has a groove for sliding installation of the disassembled component. The groove extends along the thickness direction of the connecting rod, and the opening of the groove is located on one side of the connecting rod in the Z-direction when it is flattened. The disassembled component can easily enter and exit the groove through the opening.

[0033] In one alternative implementation, multiple components can be provided, with different spacing between their opposite sides in the clamping direction. Each time, components with different spacing can be selected and placed on the connecting rod or spindle. When the rotating shaft mechanism is in a flattened state, clamping the components between the corresponding connecting rod and spindle will result in different flattening angles. If the flattening angle of the rotating shaft mechanism is unsatisfactory in the assembled state, the component can be directly removed from the spindle or connecting rod, and another component with a suitable spacing can be placed on the spindle or connecting rod to ensure the measured flattening angle reaches the preset value.

[0034] In one alternative implementation, the component is made of a machinable material. When the component is spaced at a first distance between its two opposite sides in the clamping direction, the rotating shaft mechanism is in a flattened state, and a first flattening angle is formed between the support surfaces of the supports on both sides of the spindle. When the component is spaced at a second distance between its two opposite sides in the clamping direction, the rotating shaft mechanism is in a flattened state, and a second flattening angle is formed between the support surfaces of the supports on both sides of the spindle. The component can be made of a material that is easy to machine (e.g., grinding), such as iron, aluminum, or other metals, to change the distance between the two opposite sides in the clamping direction of the component.

[0035] In one alternative implementation, multiple components can be provided, and the distance between the opposite sides of the components in the clamping direction can be set to different dimensions. The components can be made of machinable materials, so that the distance between the opposite sides of the components in the clamping direction can be changed. This makes it easier and more accurate to correct the flattening angle.

[0036] In one alternative implementation, the two opposite sides of the disassembled parts in the clamping direction can be parallel to each other. When the disassembled parts are separated from the spindle or connecting rod, it is convenient to use the measuring jaws of calipers to abut against the opposite sides of the disassembled parts to measure the distance between the opposite sides of the disassembled parts, and then select a disassembled part of appropriate size.

[0037] In one alternative implementation, the two opposite sides of the component in the clamping direction form a predetermined angle, and the two opposite sides of the component do not have to be parallel. When the rotating shaft mechanism is in a flattened state, the two opposite sides of the component abut against the connecting rod and the main shaft respectively, which also allows the flattening angle to reach the preset value.

[0038] In one alternative implementation, the component is fixed to the connecting rod or spindle by fasteners; or, the component is fixed to the connecting rod or spindle by adhesive bonding; or, the component is fixed to the connecting rod or spindle by snap-fit; or, the component is fixed to the connecting rod or spindle by welding. By pre-installing a component of appropriate size on the spindle or connecting rod, the flattening angle of the rotating shaft mechanism reaches a preset value, and then using a fixing method, the component can be conveniently and reliably fixed to the spindle or connecting rod.

[0039] In one alternative implementation, the component is secured to the connecting rod or spindle by screws. The component has a stepped hole, and the connecting rod or spindle has a threaded hole corresponding to the stepped hole. By aligning the stepped hole and the threaded hole, passing the screw through the stepped hole and threading it into the threaded hole, with the screw head abutting against the stepped surface of the stepped hole, the component can be secured to the connecting rod or spindle.

[0040] In one alternative implementation, the component is secured to the connecting rod or spindle by a snap-fit ​​mechanism. The component has a snap-fit ​​position, and the connecting rod or spindle has a snap-fit ​​mechanism. By engaging the snap-fit ​​mechanism with the snap-fit ​​position, the component can be secured to the connecting rod or spindle.

[0041] Secondly, this application provides a foldable device, including a hinge mechanism, a first housing, a second housing, and a flexible screen. The hinge mechanism is located between the first housing and the second housing. A connecting rod on one side of the main shaft is connected to the first housing, and a connecting rod on the other side of the main shaft is connected to the second housing. The two ends of the flexible screen are fixed to the first housing and the second housing, respectively, and the middle area of ​​the flexible screen corresponds to the hinge mechanism. The area of ​​the flexible screen corresponding to the hinge mechanism has good flatness, resulting in good light and shadow display effects and high overall flatness and refinement.

[0042] In one alternative implementation, the connecting rod and the first housing (or the second housing) can be directly connected, such as through a fixed connection or a movable connection. Alternatively, the connecting rod and the first housing (or the second housing) can be indirectly connected. For example, each housing may have a predetermined structural component fixed to it, and the connecting rod located on the same side of the spindle may be movably connected to the predetermined structural component, thus achieving an indirect connection between the connecting rod and the housing located on the same side of the spindle via the predetermined structural component.

[0043] In one alternative implementation, the flexible screen and the first housing (or the second housing) can be connected by means of bonding or other methods. The flexible screen and the pivot mechanism are not connected; when the first and second housings are folded, the corresponding area of ​​the flexible screen bends accordingly.

[0044] In one alternative implementation, the foldable device has an inward folding structure. When the pivot mechanism is in the closed state, a screen-accommodating space is formed between the first housing, the pivot mechanism, and the second housing. The flexible screen is partially bent and located in the screen-accommodating space.

[0045] In one alternative implementation, the foldable device has an outward folding structure. When the pivot mechanism is in the closed state, the flexible screen is partially bent and covers the first and second housings.

[0046] In one alternative implementation, the foldable device may include a pivot mechanism and a first housing and a second housing respectively connected to both sides of the pivot mechanism, the first housing and the second housing being folded and unfolded via the pivot mechanism.

[0047] In one alternative implementation, the foldable device may include two or more first housings, with a second housing disposed between each pair of adjacent first housings, and a pivot mechanism connecting the adjacent first and second housings, so that the foldable device forms a stacked structure of three or more layers when folded.

[0048] Thirdly, embodiments of this application provide an assembly method for a rotating shaft mechanism, comprising: pivotally connecting multiple connecting rods to a main shaft, wherein one or more connecting rods are respectively provided on both sides of the main shaft in the width direction;

[0049] Support members are arranged on both sides of the spindle in the width direction, so that the support members are movably connected to the connecting rods of the corresponding support members;

[0050] Measure the flattening angle when no parts are disassembled;

[0051] Pre-install the disassembled parts onto the connecting rod or spindle;

[0052] Measure the flattening angle when disassembling components;

[0053] If there is a deviation in the flattening angle, change the distance between the two opposite sides of the disassembled parts in the clamping direction to make the flattening angle reach the preset value.

[0054] Once the flattening angle reaches the preset value, fix the disassembled parts to the connecting rod or spindle.

[0055] The assembly method of the pivot mechanism provided in this application embodiment involves setting a disassembled component on the connecting rod or main shaft. This disassembled component is a key part affecting the flattening angle between the supports on both sides of the main shaft. The disassembled component can be accurately measured or controlled, and its dimensions are stable. Using a disassembled component of appropriate size ensures the flattening angle reaches a preset value. The flattening angle of the pivot mechanism only requires considering the distance between the disassembled component and its opposite sides in the clamping direction, thus shortening the dimensional chain. If the flattening angle of the pivot mechanism in the assembled state is poor, the disassembled component can be directly removed from the pivot mechanism, and a disassembled component of appropriate size can be installed to achieve the preset flattening angle. This achieves rapid and low-cost flattening angle correction, improving the yield and production capacity of the pivot mechanism. When the pivot mechanism is applied to foldable devices, when the flattening angle reaches the preset value, the area on the flexible screen corresponding to the pivot mechanism has good flatness, resulting in good light and shadow display effects and high overall flattening precision.

[0056] In one alternative implementation, the flattening angle is measured by combining a camera and data processing. The rotating shaft mechanism is in a flattened state. The camera takes pictures of the rotating shaft mechanism along its axial direction, capturing the corresponding sides of the support surfaces of the support members on both sides of the main shaft. The processor calculates the included angle between the corresponding sides of the two support surfaces, and the calculated included angle is the flattening angle of the rotating shaft mechanism.

[0057] In one alternative implementation, the flattening angle is measured by using an angle measuring tool. The rotating shaft mechanism is in a flattened state, and the angle measuring tool is placed on one side of the axial direction of the rotating shaft mechanism. The angle of the rotating shaft mechanism can be measured by measuring the angle of the corresponding side of the support surface of the support member on both sides of the main shaft. Attached Figure Description

[0058] Figure 1 This is a structural schematic diagram of a foldable device in related technologies;

[0059] Figure 2 This is a schematic diagram of another foldable device in the related technology;

[0060] Figure 3 A schematic diagram of the foldable device provided in the embodiments of this application in its flattened state;

[0061] Figure 4 for Figure 3 Exploded 3D view of a foldable device;

[0062] Figure 5 for Figure 3 A schematic diagram of the foldable device in its closed state;

[0063] Figure 6 A schematic diagram of the structure of a foldable device in a flattened state, provided for another embodiment of this application;

[0064] Figure 7 for Figure 6 A schematic diagram of the foldable device in its closed state;

[0065] Figure 8 A schematic diagram of the rotating shaft mechanism provided in the embodiment of this application in a flattened state;

[0066] Figure 9 for Figure 8 A schematic diagram of the rotating shaft mechanism in the closed state;

[0067] Figure 10 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0068] Figure 11 A three-dimensional assembly drawing of a rotating shaft mechanism provided in another embodiment of this application;

[0069] Figure 12 for Figure 11 A schematic diagram of the rotating shaft mechanism from another angle;

[0070] Figure 13 (a), (b), and (c) in the text are respectively Figure 11 A schematic diagram of the rotating shaft mechanism in the flattened state, closed state, and intermediate state;

[0071] Figure 14 for Figure 11 An exploded three-dimensional view of the rotating shaft mechanism;

[0072] Figure 15 for Figure 14 A further exploded three-dimensional view of the rotating shaft mechanism;

[0073] Figure 16 for Figure 15 Another perspective exploded view of the rotating shaft mechanism;

[0074] Figure 17 for Figure 11 A cross-sectional view of the rotating shaft mechanism along line BB;

[0075] Figure 18 for Figure 13 (b) is a cross-sectional view of the rotating shaft mechanism along line CC.

[0076] Figure 19 for Figure 11 A schematic diagram of the rotating shaft mechanism in the flattened state and the assembly of the flexible screen;

[0077] Figure 20 for Figure 11 A schematic diagram of the assembly of the rotating shaft mechanism and the flexible screen in the closed state;

[0078] Figure 21 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0079] Figure 22 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0080] Figure 23 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0081] Figure 24 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0082] Figure 25 This is a schematic diagram of the rotating shaft mechanism in a flattened state according to another embodiment of this application;

[0083] Figure 26 for Figure 25 An exploded three-dimensional view of the rotating shaft mechanism;

[0084] Figure 27 for Figure 25 A cross-sectional view of the rotating shaft mechanism along line DD;

[0085] Figure 28 for Figure 25 A schematic diagram of the rotating shaft mechanism in the closed state;

[0086] Figure 29 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0087] Figure 30 This is a schematic diagram of the structure of a rotating shaft mechanism provided in another embodiment of this application;

[0088] Figure 31 A schematic diagram showing a rotating shaft mechanism with multiple disassembled parts provided in another embodiment of this application;

[0089] Figure 32 A schematic diagram illustrating the thickness change during disassembly processing in a rotating shaft mechanism according to another embodiment of this application;

[0090] Figure 33 A flowchart illustrating the assembly method of the rotating shaft mechanism provided in the embodiments of this application.

[0091] Explanation of reference numerals in the attached figures:

[0092] 10-Spindle mechanism; 11-Main shaft; 12-Connecting rod; 13-Support component; 14-Connecting shaft; 14a-Connecting hole; 15-Virtual shaft; 15a-Circular arc arm; 15b-Circular arc groove; 20-Housing; 30-Flexible screen;

[0093] 1000 - Foldable devices;

[0094] 100-Rotating shaft mechanism;

[0095] 110 - Spindle; 110a - First horizontal mating surface; 110b - First vertical mating surface; 111 - First shell; 111a - First arc surface; 112 - Second shell; 112a - Second arc surface; 113 - Fastener; 114 - Boss;

[0096] 120 - Connecting rod; 121 - Positioning part; 121a - Slide groove; 121b - Opening; 120a - Second horizontal mating surface; 120b - Second vertical mating surface;

[0097] 130 - Support component; 131 - Support surface; 132 - Slide groove;

[0098] 140, 140' - Disassembled parts; 141 - Plate-shaped part; 142 - First connecting part; 143 - Fitting part; 144 - Second connecting part; 145, 145a, 145b, 145c, 145d - Sides; 140a - First disassembled part; 140b - Second disassembled part; 140c - Third disassembled part;

[0099] 150 - Connecting shaft; 151 - Connecting hole; 160 - Virtual shaft; 161 - Arc arm; 162 - Arc groove;

[0100] 200 - First housing; 300 - Second housing; 400 - Flexible screen. Detailed Implementation

[0101] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Although the description of this application is presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this implementation. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may arise based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0102] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0103] It should be understood that, in the description of the embodiments of this application, unless otherwise expressly specified and limited, the terms "installation" and "connection" should be interpreted broadly. For example, "connection" can be a detachable connection or a non-detachable connection; it can be a direct connection or an indirect connection through an intermediate medium. The terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0104] Furthermore, the terms "first" and "second" 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. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0105] References to "one embodiment" or "some embodiments" as described in this specification mean that one or more embodiments of this application include a specific feature, structure, or characteristic described in connection with that embodiment. Therefore, the phrases "in one embodiment," "in some embodiments," "in other embodiments," "in still other embodiments," etc., appearing in different parts of this specification do not necessarily refer to the same embodiment, but rather mean "one or more, but not all, embodiments," unless otherwise specifically emphasized. The terms "comprising," "including," "having," and variations thereof mean "including but not limited to," unless otherwise specifically emphasized.

[0106] See Figure 1 and Figure 2 A foldable device in related technology includes a pivot mechanism 10, two housings 20, and a flexible screen 30. The two housings 20 are respectively located on both sides of the pivot mechanism 10. The two ends of the flexible screen 30 are fixed to the two housings 20 respectively, and the middle area of ​​the flexible screen 30 is located corresponding to the pivot mechanism 10. The pivot mechanism 10 includes a main shaft 11, connecting rods 12 distributed on both sides of the main shaft 11, and support members 13. The connecting rods 12 on both sides of the main shaft 11 can be pivotally connected to the main shaft 11 via connecting shafts 14 or virtual shafts 15. The support members 13 on both sides of the main shaft 11 are movably connected to the corresponding connecting rods 12. The connecting rods 12 on both sides of the main shaft 11 are connected to the corresponding housings 20 to drive the housings 20 to rotate relative to the main shaft 11, thereby realizing the unfolding and folding of the two housings 20. When the rotating shaft mechanism 10 is in the flattened state, the connecting rods 12 on both sides of the main shaft 11 and the main shaft 11 abut at point A, which restricts the relative rotation of the connecting rods 12 and the main shaft 11, and also restricts the position of the support member 13 relative to the main shaft 11, so that the flattening angle θ formed by the support members 13 on both sides of the main shaft 11 is close to the preset value of 180°.

[0107] Among them, such as Figure 1 As shown, the connecting rod 12 is pivotally connected to the main shaft 11 via the connecting shaft 14. The connecting shaft 14 can be provided on the main shaft 11, and the connecting rod 12 can be provided with a connecting hole 14a. The connecting shaft 14 is passed through the connecting hole 14a, and the connecting shaft 14 can rotate around the axis of the connecting hole 14a, thus realizing the rotatable connection between the connecting rod 12 and the main shaft 11.

[0108] like Figure 2 As shown, the connecting rod 12 is pivotally connected to the main shaft 11 via a virtual axis 15. This can be achieved by setting an arc arm 15a on the connecting rod 12 and an arc groove 15b on the main shaft 11, with the axes of the arc arm 15a and the arc groove 15b coinciding. The arc arm 15a can be slidably installed in the arc groove 15b, thus realizing a rotatable connection between the connecting rod 12 and the main shaft 11.

[0109] The flattening angle θ of the aforementioned rotating shaft mechanism 10 depends on the dimensions of multiple components, including the main shaft 11, connecting shaft 14 or virtual shaft 15, connecting rods 12 on both sides, and support members 13 on both sides. Any fluctuation in any of these dimensions will affect the flattening angle θ. Due to production cost considerations, each component has a certain tolerance zone. The dimensional chain of the rotating shaft mechanism 10 is relatively long, leading to larger tolerance fluctuations in the flattening angle θ, for example, greater than ±1.5°. Furthermore, the rotating shaft mechanism 10 requires overall thinning and minimizing of dimensions, which increases the tolerance zones of each component, further increasing the tolerance zone of the flattening angle θ.

[0110] To allow for relative movement between components, a clearance must be maintained. The design of this clearance affects the flattening angle θ of the rotating shaft mechanism 10. Specifically, for example... Figure 2 As shown, connecting rod 12 is pivotally connected to main shaft 11 via virtual shaft 15. Since the arc arm 15a and arc groove 15b are less than three-quarters of an arc, their diameters are difficult to measure accurately, making it difficult to accurately measure and control profile and concentricity. Reducing the clearance through multiple mating assemblies of various parts is insufficient to effectively lower the tolerance zone of the flattening angle θ.

[0111] The flattening angle θ of the rotating shaft mechanism 10 is measured on the support members 13 on both sides of the main shaft 11 when the rotating shaft mechanism 10 is in the assembled state. If the flattening angle θ of the rotating shaft mechanism 10 is not good (the deviation from the preset value is large), the rotating shaft mechanism 10 must be completely disassembled and reassembled, which consumes a lot of time and cost, resulting in a low yield and production capacity of the rotating shaft mechanism 10.

[0112] See Figures 3 to 5 This application provides a foldable device 1000, which can be a mobile phone, tablet computer, laptop computer, e-book reader, netbook, personal digital assistant, smart wearable device (such as smartwatch), etc.

[0113] The foldable device 1000 includes a hinge mechanism 100, a first housing 200, a second housing 300, and a flexible screen 400. The hinge mechanism 100 is located between the first housing 200 and the second housing 300, which are respectively connected to opposite sides of the hinge mechanism 100. The flexible screen 400 is fixed to the first housing 200 and the second housing 300. The first housing 200 and the second housing 300 can be used to mount circuit boards, batteries, receivers, speakers, cameras, and other devices. The circuit boards can house processors, storage units, antennas, and other devices.

[0114] The flexible screen 400 can be used to display images and information, and can also input commands and information. The flexible screen 400 can be an organic light-emitting diode (OLED) display, an active matrix OLED or active matrix OLED display, a miniature OLED display, a micro OLED display, a micro organic light-emitting diode display, a quantum dot OLED display, etc.

[0115] The rotating shaft mechanism 100 has a flattened state and a closed state. (See also...) Figure 3 When the rotating shaft mechanism 100 is in a flattened state, the first housing 200 and the second housing 300 are arranged on both sides of the rotating shaft mechanism 100 and are approximately 180° apart. The flexible screen 400 is unfolded and supported on the first housing 200, the rotating shaft mechanism 100 and the second housing 300.

[0116] See Figure 5 When the rotating shaft mechanism 100 is in the closed state, the first housing 200 and the second housing 300 close together to form a stacked structure, and the flexible screen 400 bends along with the first housing 200 and the second housing 300.

[0117] The pivot mechanism 100 also has an intermediate state during the switching process between the flattened state and the closed state. By switching between different states of the pivot mechanism 100, the foldable device 1000 can be folded and unfolded.

[0118] The foldable device 1000 can be configured as an inward folding structure or an outward folding structure. For example... Figures 3 to 5 As shown, when the inward folding structure is adopted, when the pivot mechanism 100 is in the closed state, a screen-accommodating space is formed between the first housing 200, the pivot mechanism 100, and the second housing 300, and the flexible screen 400 is partially bent and located in the screen-accommodating space.

[0119] like Figure 6 , Figure 7 As shown, when the outward folding structure is adopted, when the pivot mechanism 100 is in the closed state, the flexible screen 400 is partially bent and the flexible screen 400 covers the first housing 200 and the second housing 300.

[0120] In some embodiments, see Figures 3 to 7 The foldable device 1000 may include a pivot mechanism 100 and a first housing 200 and a second housing 300 respectively connected to both sides of the pivot mechanism 100. The first housing 200 and the second housing 300 are folded and unfolded through the pivot mechanism 100.

[0121] In other embodiments, the foldable device 1000 may include two or more first housings 200, with a second housing 300 disposed between each two adjacent first housings 200, and a pivot mechanism 100 connecting adjacent first housings 200 and second housings 300, so that the foldable device 1000 forms a stacked structure of three or more layers when folded.

[0122] To facilitate the description of the position and orientation of the foldable device 1000 and the pivot mechanism 100, the arrangement direction of the first housing 200 and the second housing 300 in the pivot mechanism 100 in the flattened state is defined as the X direction, the width direction of the main shaft 110 in the pivot mechanism 100 is the X direction, the axial direction of the pivot mechanism 100 or the main shaft 110 is defined as the Y direction, and the thickness direction of the main shaft 110 is defined as the Z direction. The X, Y, and Z directions are all perpendicular to each other.

[0123] See Figures 8 to 13 , Figures 11 to 13 This is an exemplary structural diagram, but not a limitation thereof. This application provides a rotating shaft mechanism 100, including: a main shaft 110, a plurality of connecting rods 120, paired support members 130, and one or more disassembly parts 140. One or more connecting rods 120 are respectively disposed on both sides of the main shaft 110 along its width direction (X direction), with one end of each connecting rod 120 pivotally connected to the main shaft 110. Each pair of support members 130 is respectively disposed on both sides of the main shaft 110 along its width direction (X direction). Support members 130 located on the same side of the main shaft 110 correspond to connecting rods 120, and support members 130 can be movably connected to the corresponding connecting rods 120. Each support member 130 has a support surface 131. The connecting rods 120 located on both sides of the main shaft 110 can rotate relative to the main shaft 110, and the support member 130 can move with the connecting rod 120 corresponding to the support member 130, so that the rotating shaft mechanism 100 is in a flattened state (e.g., Figure 8 (as shown) and closed state (as shown) Figure 9 Switching between (as shown). A disassembly piece 140 is provided on the main spindle 110 or at least one connecting rod 120. When the rotating shaft mechanism 100 is in the flattened state, the disassembly piece 140 is clamped between the connecting rod 120 corresponding to the disassembly piece 140 and the main spindle 110.

[0124] See Figure 8 , Figure 13 In (a), when the rotating shaft mechanism 100 is in a flattened state, the connecting rods 120 on both sides of the main shaft 110 unfold, and the support members 130 on both sides of the main shaft 110 are roughly aligned, that is, the included angle (flattened angle θ) formed between the support surfaces 131 of the support members 130 on both sides of the main shaft 110 reaches the preset value (180°, with a certain deviation allowed), and the support surface 131 is used to support the flexible screen 400.

[0125] See Figure 9 , Figure 13 In (b), when the rotating shaft mechanism 100 is in the closed state, the connecting rods 120 on both sides of the main shaft 110 rotate to a predetermined position so that the connecting rods 120 on both sides are arranged opposite each other, and the support members 130 on both sides of the main shaft 110 are arranged opposite each other.

[0126] See Figure 13 In (c), the rotating shaft mechanism 100 is in the intermediate state during the switching process between the flattened state and the closed state.

[0127] The support member 130 and the connecting rod 120 are movably connected, allowing the support member 130 to move along with the connecting rod 120 when the connecting rod 120 rotates relative to the main shaft 110. The form of the movable connection between the support member 130 and the connecting rod 120 is not limited; it can be as follows: Figure 8 , Figure 10 , Figure 11 The support member 130 and the connecting rod 120 are slidably connected (for example, a portion of the connecting rod 120 is slidably mounted in the groove 132 of the support member 130), or the support member 130 and the connecting rod 120 are pivotally or rotatably connected, or the support member 130 and the connecting rod 120 are movably connected by a predetermined structural member (for example, the predetermined structural member and the connecting rod 120 are slidably connected, and the predetermined structural member and the support member 130 are rotatably connected).

[0128] The detachable part 140 is detachably mounted on the connecting rod 120 or the spindle 110. For example, the detachable part 140 can be pre-installed on the connecting rod 120 or the spindle 110. If the flattening angle θ is not ideal (deviates significantly from the preset value), the detachable part 140 should be removed and a detachable part 140 of the appropriate size should be installed. If the flattening angle θ reaches the preset value, the detachable part 140 can be fixed to the connecting rod 120 or the spindle 110.

[0129] The rotating shaft mechanism 100 provided in this embodiment has connecting rods 120 pivotally connected to both sides of a main shaft 110. Support members 130 on both sides of the main shaft 110 are movably connected to the corresponding connecting rods 120, enabling the rotating shaft mechanism 100 to switch between a flattened state and a closed state. A disassembly member 140 is provided on the connecting rods 120 or the main shaft 110. The disassembly member 140 serves as a rotation stop for the connecting rods 120. When the rotating shaft mechanism 100 is in the flattened state, the disassembly member 140 is clamped between the connecting rods 120 and the main shaft 110. The disassembly member 140 is a key component affecting the flattening angle θ between the support members 130 on both sides of the main shaft 110. The dimensions of the disassembly member 140 are stable and can be accurately measured or controlled. Using a disassembly member 140 of appropriate size can ensure that the flattening angle θ reaches a preset value. Unlike related art rotating shaft mechanisms, this eliminates the need to consider the dimensions of multiple components such as the main shaft, connecting shaft or virtual shaft, connecting rods on both sides, and support members on both sides. The dimensional tolerances of these components can be relaxed, reducing component costs. There is no need to consider the difficulty in accurately measuring the arc arms and arc grooves in the virtual axis. Compared with the long dimension chain of multi-part shaft mechanisms in related technologies, the flattening angle θ of the shaft mechanism 100 in this embodiment only needs to consider the single dimension of the distance between the two sides 145 of the disassembled part 140 in the clamping direction, thus shortening the dimension chain. If the flattening angle θ of the shaft mechanism 100 in the assembled state is not good, the disassembled part 140 can be directly removed from the shaft mechanism 100, and a disassembled part 140 of appropriate size can be installed to make the flattening angle θ reach the preset value, without the need for complete disassembly and reassembly of the shaft mechanism 100 as in related technologies. This achieves fast and low-cost flattening angle θ correction, improving the yield and production capacity of the shaft mechanism 100. When the shaft mechanism 100 is in the flattened state, the clamping direction of the disassembled part 140 can be the thickness direction (Z direction) or the width direction (X direction) of the main shaft 110. Specific embodiments will be described in detail later.

[0130] Combination Figure 3 , Figure 6 , Figure 8 , Figure 10 , Figure 11 When the aforementioned pivot mechanism 100 is applied to the foldable device 1000, the foldable device 1000 includes the pivot mechanism 100, a first housing 200, a second housing 300, and a flexible screen 400. The pivot mechanism 100 is located between the first housing 200 and the second housing 300. A connecting rod 120 located on one side of the main shaft 110 is connected to the first housing 200, and a connecting rod 120 located on the other side of the main shaft 110 is connected to the second housing 300. The two ends of the flexible screen 400 are respectively fixed to the first housing 200 and the second housing 300, and the middle area of ​​the flexible screen 400 is set corresponding to the pivot mechanism 100. The area on the flexible screen 400 corresponding to the pivot mechanism 100 has good flatness, resulting in good light and shadow display effects and high overall flatness and refinement.

[0131] The connecting rod 120 and the first housing 200 (or the second housing 300) can be directly connected, such as through a fixed connection or a movable connection. Alternatively, the connecting rod 120 and the first housing 200 (or the second housing 300) can be indirectly connected. For example, each housing may have a predetermined structural component fixed to it, and the connecting rod 120 located on the same side of the main shaft 110 may be movably connected to the predetermined structural component, thus achieving an indirect connection between the connecting rod 120 and the housing located on the same side of the main shaft 110 via the predetermined structural component.

[0132] The flexible screen 400 and the first housing 200 (or the second housing 300) can be connected by means of adhesive bonding or other methods. The flexible screen 400 and the pivot mechanism 100 are not connected. When the first housing 200 and the second housing 300 are folded, the corresponding area of ​​the flexible screen 400 bends accordingly.

[0133] When setting up the spindle 110, the spindle 110 serves as a fixed component, and parts such as the connecting rod 120 and the support member 130 can be mounted on the spindle 110. The spindle 110 can be generally set in a flat strip shape, making the structure of the spindle 110 compact. For example, see [reference needed]. Figure 11 , Figure 12 The spindle 110 includes a first shell 111 and a second shell 112 stacked together. The first shell 111 and the second shell 112 can be connected by fasteners 113 (such as screws), clips, etc.

[0134] When the support member 130 is set, the support member 130 can be roughly plate-shaped (such as rectangular plate-shaped), with a compact structure and small space occupation. When the rotating shaft mechanism 100 is in a flattened state, the support members 130 on both sides of the main shaft 110 can reliably support the flexible screen 400.

[0135] When the connecting rod 120 is pivotally connected to the main shaft 110, there are several possible implementation methods. Two implementation methods are given as examples below.

[0136] The first method of implementing the pivot connection of the connecting rod 120 to the main shaft 110: See [link / reference] Figure 8 , Figure 9 The connecting rod 120 and the main shaft 110 are connected by a connecting shaft 150. The connecting shaft 150 connection means that one of the two parts is provided with a connecting shaft 150, and the other part is provided with a connecting hole 151. The connecting shaft 150 is passed through the connecting hole 151, and the connecting shaft 150 can rotate around the axis of the connecting hole 151, so as to realize the rotational connection between the two parts.

[0137] For example, the main spindle 110 is provided with a connecting shaft 150, and the connecting rod 120 is provided with a connecting hole 151. The connecting shaft 150 and the connecting hole 151 are rotatably engaged, so that the connecting rod 120 is rotatably connected to the main spindle 110. By providing multiple sets of cooperating connecting shafts 150 and connecting holes 151, reliable rotation between the connecting rod 120 and the main spindle 110 can be achieved.

[0138] The second method of implementing the pivot connection of link 120 to spindle 110: see [link / reference] Figures 10 to 12 The connecting rod 120 and the main shaft 110 are connected by a virtual axis 160. The virtual axis 160 connection means that one of the two parts, the connecting rod 120 and the main shaft 110, has an arc arm 161, and the other part has an arc groove 162. The axes of the arc arm 161 and the arc groove 162 coincide, and the arc arm 161 can be slidably installed within the arc groove 162, achieving a rotatable connection between the connecting rod 120 and the main shaft 110. Using a virtual axis 160 connection allows the rotating shaft mechanism 100 to occupy less space.

[0139] The arc groove can be a quarter-circle arc groove, a third-circle arc groove, a half-circle arc groove, etc., and the arc arm 161 can be a quarter-circle arc arm, a third-circle arc arm, a half-circle arc arm, etc. The shape and position of the arc arm 161 and the arc groove 162 can be adjusted as needed.

[0140] For example, see Figures 14 to 18 The connecting rod 120 is provided with an arc arm 161, and the main shaft 110 is provided with an arc groove 162. The arc arm 161 and the arc groove 162 are slidably engaged, allowing the connecting rod 120 to be rotatably connected to the main shaft 110. By setting multiple sets of cooperating arc arms 161 and arc grooves 162, reliable rotation between the connecting rod 120 and the main shaft 110 is achieved.

[0141] When an arc groove 162 is provided on the spindle 110, in some embodiments, see [reference needed]. Figures 14 to 18 The main shaft 110 includes a first shell 111 and a second shell 112. The first shell 111 has a concave first arc surface 111a, and the second shell 112 has a convex second arc surface 112a. The axes of the first arc surface 111a and the second arc surface 112a coincide. When the first shell 111 is installed on the second shell 112, the first arc surface 111a and the second arc surface 112a form an arc groove 162. The first shell 111 with the first arc surface 111a and the second shell 112 with the second arc surface 112a are easy to form and assemble. The arc arm 161 and the arc groove 162 are slidably engaged to realize the rotational connection between the connecting rod 120 and the main shaft 110.

[0142] In other embodiments, the arc groove 162 can be directly formed on the main shaft 110, and the arc arm 161 and the arc groove 162 slide together to realize the rotational connection between the connecting rod 120 and the main shaft 110.

[0143] To improve the reliability of the rotatable connection between the connecting rod 120 and the main shaft 110, in some embodiments, see [reference needed]. Figure 12 , Figure 14The arc arms 161 on the connecting rods 120 located on both sides of the main shaft 110 can be staggered along the axial direction (Y direction) of the main shaft 110. The multiple arc grooves 162 on the main shaft 110 are staggered along the axial direction of the main shaft 110. In a limited space, the arc arms 161 and arc grooves 162 with larger diameters can be set to improve the structural strength and make the sliding fit of the arc arms 161 and arc grooves 162 more stable, thereby making the connecting rods 120 reliably rotatably connected to the main shaft 110.

[0144] To facilitate the installation of the disassembled component 140 in the intended position, in some embodiments, see [reference needed]. Figure 14 , Figure 15 The connecting rod 120 or the main spindle 110 has a positioning part 121, and the disassembled part 140 is positioned and installed on the positioning part 121. The positioning part 121 can quickly position the disassembled part 140 in the predetermined position of the connecting rod 120 or the main spindle 110, improving assembly efficiency and making it convenient and quick to correct the flattening angle θ.

[0145] In some embodiments, when setting the positioning part 121, see [reference]. Figure 14 , Figure 15 The positioning part 121 includes a slide groove 121a extending along a predetermined route. The slide groove 121a has an opening 121b, through which the disassembly part 140 can enter and exit and slide on the slide groove 121a.

[0146] The opening 121b of the slide groove 121a allows the disassembled part 140 to enter and exit the slide groove 121a. The sliding mechanism facilitates the quick assembly of the disassembled part 140 to the predetermined position on the main shaft 110 or connecting rod 120. When the rotating shaft mechanism 100 is in a flattened state, the disassembled part 140 is clamped between the main shaft 110 and the connecting rod 120, ensuring the flattening angle θ reaches a preset value. The flattening angle θ of the rotating shaft mechanism 100 in the assembled state is measured. If the flattening angle θ is unsatisfactory, the disassembled part 140 can be directly pulled out through the opening 121b of the slide groove 121a using a sliding method to replace it with a disassembled part 140 of suitable size. The assembly and disassembly of the disassembled part 140 are convenient.

[0147] In other embodiments, the positioning part 121 includes a protrusion, and the disassembly part 140 has a positioning hole that matches the protrusion. By inserting the protrusion into the positioning hole, the disassembly part 140 can be quickly positioned and installed at a predetermined position on the connecting rod 120 or the main shaft 110. When the rotating shaft mechanism 100 is in a flattened state, the disassembly part 140 is clamped between the main shaft 110 and the connecting rod 120, so that the flattening angle θ reaches a preset value.

[0148] There are several possible implementation methods when setting the position of component 140. Two implementation methods are given as examples below.

[0149] The first method for implementing component 140 is as follows: (See attached document) Figure 8 , Figure 10 , Figure 19 The disassembly part 140 is used as a horizontal stop surface. The disassembly part 140 can be set on the main shaft 110 or the connecting rod 120. When the rotating shaft mechanism 100 is in a flattened state, the two opposite sides 145 of the disassembly part 140 in the clamping direction (Z direction) respectively abut against a surface in the thickness direction (Z direction) of the main shaft 110 and a surface in the Z direction of the connecting rod 120.

[0150] The second way to implement the disassembly 140 is as follows: the disassembly 140 is used as a vertical stop surface. The disassembly 140 can be set on the main shaft 110 or the connecting rod 120. When the rotating shaft mechanism 100 is in a flattened state, the two opposite sides 145 of the disassembly 140 in the clamping direction (X direction) respectively abut against a surface in the width direction (X direction) of the main shaft 110 and a surface in the X direction of the connecting rod 120.

[0151] The two implementation methods of the above-mentioned disassembly component 140 can be implemented by setting the disassembly component 140 on both sides or both sides of the connecting rod 120 of the spindle 110, or by setting the disassembly component 140 on one side or one side of the connecting rod 120 of the spindle 110. Both methods can ensure that the flattening angle θ between the support members 130 on both sides of the spindle 110 reaches the preset value. The implementation methods of different disassembly components 140 are described below by example.

[0152] The first method of implementing the disassembly part 140 involves using the disassembly part 140 as a horizontal stop surface, with the clamping direction of the disassembly part 140 being the thickness direction (Z direction) of the spindle 110. (See reference...) Figure 8 , Figure 10 , Figure 19 The main shaft 110 has a first horizontal mating surface 110a, and the connecting rod 120 has a second horizontal mating surface 120a. A disassembly piece 140 is provided on the first horizontal mating surface 110a or at least one of the second horizontal mating surfaces 120a. When the rotating shaft mechanism 100 is in a flattened state, the first horizontal mating surface 110a and the second horizontal mating surface 120a face each other, and the disassembly piece 140 is sandwiched between the corresponding first horizontal mating surface 110a and the second horizontal mating surface 120a. (See reference...) Figure 9 , Figure 20 When the rotating shaft mechanism 100 is in the closed state, the second horizontal mating surfaces 120a of the connecting rods 120 on both sides of the main shaft 110 are arranged opposite to each other.

[0153] The first horizontal mating surface 110a of the spindle 110 is a surface along the thickness direction (Z direction) of the spindle 110. The second horizontal mating surface 120a of the connecting rod 120 is a surface along the Z direction on the connecting rod 120 when the rotating shaft mechanism 100 is in a flattened state. When the disassembly piece 140 is fixed to the connecting rod 120, the side 145a of the disassembly piece 140 facing the first horizontal mating surface 110a serves as a horizontal stop surface, used to abut against the first horizontal mating surface 110a in the flattened state. When the disassembly piece 140 is fixed to the spindle 110, the side 145b of the disassembly piece 140 facing the second horizontal mating surface 120a serves as a horizontal stop surface, used to abut against the second horizontal mating surface 120a in the flattened state.

[0154] See Figure 8 , Figure 10 , Figure 19 When disassembly parts 140 are respectively installed on the second horizontal mating surfaces 120a of the connecting rods 120 on both sides of the first horizontal mating surface 110a of the main shaft 110, during the process of the rotating shaft mechanism 100 switching from the closed state to the flattened state, the connecting rods 120 unfold and rotate relative to the main shaft 110. The second horizontal mating surfaces 120a of the connecting rods 120 gradually approach the first horizontal mating surface 110a of the main shaft 110 until the opposite sides 145 of the disassembly parts 140 abut against the first horizontal mating surface 110a and the second horizontal mating surface 120a respectively, thereby stopping the rotation of the connecting rods 120 on both sides of the main shaft 110. The disassembly parts 140 can be of appropriate size so that the flattening angle θ reaches a preset value.

[0155] See Figure 21 , Figure 22 When a disassembly piece 140 is provided on one side of the first horizontal mating surface 110a of the main shaft 110 or on the second horizontal mating surface 120a of the connecting rod 120, the side of the rotating shaft mechanism 100 with the disassembly piece 140 ( Figure 21 , Figure 22 On the left side of the rotating shaft mechanism 100, the connecting rod 120 on the side with the disassembly piece 140 abuts against the first horizontal mating surface 110a and the second horizontal mating surface 120a of the corresponding disassembly piece 140 via the opposite two sides 145 of the disassembly piece 140, thereby stopping the rotation of the connecting rod 120 on the side with the disassembly piece 140. For the side of the rotating shaft mechanism 100 without the disassembly piece 140 (… Figure 21 , Figure 22 (Right side of the rotating shaft mechanism 100) During the process of switching the rotating shaft mechanism 100 from the closed state to the flattened state, the connecting rod 120 unfolds and rotates relative to the main shaft 110. The second horizontal mating surface 120a of the connecting rod 120 gradually approaches the first horizontal mating surface 110a of the main shaft 110 until the second horizontal mating surface 120a abuts against the first horizontal mating surface 110a, thereby stopping the rotation of the connecting rod 120 on the side without the disassembly part 140. The disassembly part 140 can be of a suitable size so that the flattening angle θ reaches a preset value.

[0156] When setting the first horizontal mating surface 110a on the spindle 110, the specific position is set as needed. For example, such as... Figure 8 , Figure 10 As shown, the first horizontal mating surface 110a is formed on the surface of the main shaft 110; or, as... Figures 14 to 16 As shown, the main shaft 110 has bosses 114 on both sides, and a first horizontal mating surface 110a is formed on the bosses 114.

[0157] To make the rotating shaft mechanism 100 with the disassembly component 140 compact, in some embodiments, see [reference needed]. Figure 15 , Figure 16 , Figure 19 The disassembly 140 includes a sheet-like portion 141. When the rotating shaft mechanism 100 is in a flattened state, the two opposite sides of the sheet-like portion 141 along the thickness direction (Z direction) of the main shaft 110 (i.e., the two opposite sides 145 of the disassembly 140) respectively abut against the first horizontal mating surface 110a and the second horizontal mating surface 120a.

[0158] The sheet-like portion 141 of the disassembled part 140 serves as a horizontal stop surface, and the sheet-like portion 141 is set to a predetermined size along the Z direction. With the rotating shaft mechanism 100 in a flattened state, the sheet-like portion 141 is sandwiched between the side of the main shaft 110 in the thickness direction (Z direction) and the side of the connecting rod 120 in the Z direction. The sheet-like portion 141 has a small size in the thickness direction (Z direction) of the main shaft 110, occupying less space, making the overall structure of the rotating shaft mechanism 100 compact. The sheet-like portion 141 can be approximately cuboid or other easily formed shapes.

[0159] To facilitate the assembly of disassembled component 140, in some embodiments, see [reference]. Figure 15 , Figure 16 , Figure 19 The disassembly component 140 also includes a first connecting portion 142 connected to the sheet-like portion 141. The first connecting portion 142 is connected to the connecting rod 120 or the spindle 110. The first connecting portion 142 can be fixed to the connecting rod 120 or the spindle 110 by means of fasteners, adhesives, or other methods. The structure of this disassembly component 140 is easy to form and assemble. The first connecting portion 142 can be generally cuboid or other easily formable shapes.

[0160] For example, see Figures 14 to 16 , Figure 19 The connecting rod 120 has a groove 121a for sliding installation of the disassembly piece 140. The groove 121a extends along the length of the connecting rod 120, and the opening 121b of the groove 121a is located on one side of the connecting rod 120 in the X direction when it is in the flattened state. The disassembly piece 140 can easily enter and exit the groove 121a through the opening 121b. When the disassembly piece 140 is installed on the connecting rod 120, the first connecting portion 142 is located in the groove 121a and is fixedly connected to the connecting rod 120.

[0161] The second implementation of the disassembly component 140 involves using it as a vertical stop surface, with the clamping direction of the disassembly component 140 being the width direction (X direction) of the spindle 110. (See reference...) Figures 23 to 27 The main shaft 110 has two first vertical mating surfaces 110b distributed opposite each other along the width direction (X direction) of the main shaft 110, and the connecting rod 120 has a second vertical mating surface 120b. At least one first vertical mating surface 110b or at least one second vertical mating surface 120b is provided with a disassembly piece 140. When the rotating shaft mechanism 100 is in a flattened state, the first vertical mating surfaces 110b and 120b face each other, and the disassembly piece 140 is sandwiched between the corresponding first vertical mating surfaces 110b and 120b. (See reference...) Figure 28 When the rotating shaft mechanism 100 is in the closed state, the second vertical mating surfaces 120b of the connecting rods 120 on both sides of the main shaft 110 are oriented in the same direction.

[0162] The first vertical mating surface 110b of the spindle 110 consists of two opposing surfaces in the width direction (X direction) of the spindle 110. The second vertical mating surface 120b of the connecting rod 120 is a surface along the X direction on the connecting rod 120 when the rotating shaft mechanism 100 is in a flattened state. When the disassembly piece 140 is fixed to the connecting rod 120, the side 145c of the disassembly piece 140 facing the first vertical mating surface 110b serves as a vertical stop surface, used to abut against the first vertical mating surface 110b in the flattened state. When the disassembly piece 140 is fixed to the spindle 110, the side 145d of the disassembly piece 140 facing the second vertical mating surface 120b serves as a vertical stop surface, used to abut against the second vertical mating surface 120b in the flattened state.

[0163] See Figure 23 , Figure 24 , Figure 27 When the disassembly piece 140 is installed on the first vertical mating surfaces 110b on both sides of the main shaft 110 or the second vertical mating surfaces 120b on both sides of the connecting rod 120, during the process of the rotating shaft mechanism 100 switching from the closed state to the flattened state, the connecting rod 120 unfolds and rotates relative to the main shaft 110. The second vertical mating surface 120b of the connecting rod 120 gradually approaches the first vertical mating surface 110b of the main shaft 110 until the opposite sides 145 of the disassembly piece 140 abut against the first vertical mating surface 110b and the second vertical mating surface 120b respectively, thereby stopping the rotation of the connecting rod 120 on both sides of the main shaft 110. The disassembly piece 140 can be of a suitable size so that the flattening angle θ reaches a preset value.

[0164] See Figure 29 , Figure 30When a disassembly piece 140 is provided on the first vertical mating surface 110b on one side of the main shaft 110 or the second vertical mating surface 120b on one side of the connecting rod 120, the side of the rotating shaft mechanism 100 with the disassembly piece 140 ( Figure 29 , Figure 30 On the left side of the rotating shaft mechanism 100, the connecting rod 120 on the side with the disassembly piece 140 abuts against the first vertical mating surface 110b and the second vertical mating surface 120b of the corresponding disassembly piece 140 via opposite sides 145. This stops the rotation of the connecting rod 120 on the side with the disassembly piece 140. For the side of the rotating shaft mechanism 100 without the disassembly piece 140 (… Figure 29 , Figure 30 (Right side of the rotating shaft mechanism 100) During the process of switching the rotating shaft mechanism 100 from the closed state to the flattened state, the connecting rod 120 unfolds and rotates relative to the main shaft 110. The second vertical mating surface 120b of the connecting rod 120 gradually approaches the first vertical mating surface 110b of the main shaft 110 until the second vertical mating surface 120b abuts against the first vertical mating surface 110b, thereby stopping the rotation of the connecting rod 120 on the side without the disassembly part 140. The disassembly part 140 can be of a suitable size so that the flattening angle θ reaches a preset value.

[0165] When setting the disassembly part 140 as a vertical stop surface, refer to Figures 25 to 27 The disassembly part 140 may include a mating part 143; when the rotating shaft mechanism 100 is in a flattened state, the opposite sides of the mating part 143 (i.e., the opposite sides 145 of the disassembly part 140) respectively abut against the first vertical mating surface 110b and the second vertical mating surface 120b, as shown below. Figure 27 As shown, one side 145c of the disassembled part 140 abuts against the first vertical mating surface 110b, and the other side 145d of the disassembled part 140 abuts against the second vertical mating surface 120b.

[0166] The mating portion 143 of the disassembled part 140 is used as a vertical stop surface, and the mating portion 143 is set to a predetermined size along the X direction. When the rotating shaft mechanism 100 is in a flattened state, the mating portion 143 is sandwiched between the first vertical mating surface 110b and the second vertical mating surface 120b corresponding to the mating portion 143, so that the flattening angle θ reaches a preset value. The mating portion 143 can be approximately cuboid or other easily formed shapes.

[0167] To facilitate the assembly of disassembled component 140, in some embodiments, see [reference]. Figures 25 to 27The disassembly part 140 also includes a second connecting part 144 connected to the mating part 143, and the second connecting part 144 is connected to the connecting rod 120 or the spindle 110. The second connecting part 144 can be fixed to the connecting rod 120 or the spindle 110. The second connecting part 144 can be fixed to the connecting rod 120 or the spindle 110 by means of fasteners, adhesives, etc. The disassembly part 140 is easy to form and assemble. The second connecting part 144 can be generally cuboid or other easily formable shapes.

[0168] For example, see Figures 25 to 27 The connecting rod 120 has a groove 121a for sliding installation of the disassembly piece 140. The groove 121a extends along the thickness direction (Z direction) of the connecting rod 120, and the opening 121b of the groove 121a is located on one side of the connecting rod 120 along the Z direction when it is in the flattened state. The disassembly piece 140 can easily enter and exit the groove 121a through the opening 121b. When the disassembly piece 140 is installed on the connecting rod 120, the second connecting portion 144 is located in the groove 121a and is fixedly connected to the connecting rod 120.

[0169] To facilitate adjustment of the flattening angle θ of the rotating shaft mechanism 100, in some embodiments, see [reference needed]. Figure 31 Multiple detachable parts 140 can be provided, such as a first detachable part 140a and a second detachable part 140b. The first detachable part 140a has a first spacing d1 between its two opposite sides 145 in the clamping direction, and the second detachable part 140b has a second spacing d2 between its two opposite sides 145 in the clamping direction. Figure 8 When the main shaft 110 or at least one connecting rod 120 is provided with a first disassembly piece 140a, the rotating shaft mechanism 100 is in a flattened state, and a first flattening angle θ1 is formed between the support surfaces 131 of the support members 130 located on both sides of the main shaft 110. When the main shaft 110 or at least one connecting rod 120 is provided with a second disassembly piece 140b, the rotating shaft mechanism 100 is in a flattened state, and a second flattening angle θ2 is formed between the support surfaces 131 of the support members 130 located on both sides of the main shaft 110. It should be noted that more disassembly pieces 140 can also be provided, such as a first disassembly piece 140a, a second disassembly piece 140b, a third disassembly piece 140c, and other disassembly pieces with different spacing.

[0170] When the rotating shaft mechanism 100 is in a flattened state, the disassembly piece 140 is clamped between the connecting rod 120 and the main shaft 110, and the clamping direction of the disassembly piece 140 is the direction in which the connecting rod 120, the disassembly piece 140, and the main shaft 110 abut against each other in sequence. Figures 8 to 22 In the illustrated embodiment, the clamping direction of the disassembly component 140 is the thickness direction (Z direction) of the spindle 110. Figures 23 to 30 In the embodiment shown, the clamping direction of the disassembly 140 is the width direction (X direction) of the spindle 110.

[0171] In this embodiment, multiple components can be provided (e.g., first component 140a, second component 140b, etc.), and the spacing between the opposite sides 145 of the multiple components 140 in the clamping direction can be set to different sizes (first spacing d1, second spacing d2, etc.). Figure 8 Each time, different spacing sizes of the component 140 can be selected and placed on the connecting rod 120 or the main shaft 110. When the rotating shaft mechanism 100 is in a flattened state, the component 140 is clamped between the corresponding connecting rod 120 and the main shaft 110 to obtain different flattening angles (first flattening angle θ1, second flattening angle θ2, etc.). If the flattening angle θ of the rotating shaft mechanism 100 is not good in the assembled state, the component 140 can be directly removed from the main shaft 110 or the connecting rod 120, and another component 140 with a suitable spacing size can be replaced on the main shaft 110 or the connecting rod 120 to make the measured flattening angle θ reach the preset value.

[0172] For example, in such Figure 8 In the rotating shaft mechanism 100 shown, the clamping direction of the disassembly part 140 is the thickness direction (Z direction) of the main shaft 110. For example... Figure 31 As shown, a first disassembler 140a, a second disassembler 140b, and a third disassembler 140c are provided, with the spacing (d1, d2, d3) between their opposite sides 145 in the clamping direction increasing sequentially. The second disassembler 140b, with its centered spacing, can be initially placed on the main shaft 110 or connecting rod 120. If the flattening angle θ when the second disassembler 140b is set is too small, it can be replaced with the first disassembler 140a, which has a smaller spacing. If the flattening angle θ when the second disassembler 140b is set is too large, it can be replaced with the third disassembler 140c, which has a larger spacing. This allows for easier correction of the flattening angle θ of the rotating shaft mechanism 100 to a preset value (allowing for a certain deviation from 180°). If the flattening angle θ of a certain disassembler 140 is good, that disassembler 140 can be fixed to the main shaft 110 or connecting rod 120.

[0173] To facilitate adjustment of the flattening angle θ of the rotating shaft mechanism 100, in some embodiments, see [reference needed]. Figure 32 When the disassembled part 140 is made of a machinable material, and the disassembled part 140 is at a first distance d1 between its two opposite sides 145 in the clamping direction, the rotating shaft mechanism 100 is in a flattened state, and a first flattening angle θ1 is formed between the support surfaces 131 of the support members 130 on both sides of the main shaft 110; when the disassembled part 140' is at a second distance d2 between its two opposite sides 145 in the clamping direction, the rotating shaft mechanism 100 is in a flattened state, and a second flattening angle θ2 is formed between the support surfaces 131 of the support members 130 on both sides of the main shaft 110.

[0174] The disassembly part 140 can be made of a material that is easy to process (such as grinding), such as iron, aluminum, or other metals, to change the spacing between the clamping direction of the disassembly part 140 and its two sides 145. For example, by processing, the disassembly part 140 with a first spacing d1 can be changed into a disassembly part 140' with a second spacing d2. Figure 8 First, the disassembled part 140 with a first spacing d1 is placed on the corresponding connecting rod 120 or main shaft 110. When the first flattening angle θ1 of the rotating shaft mechanism 100 in the assembled state is too small, the disassembled part 140 is removed from the main shaft 110 or connecting rod 120. One side 145 of the disassembled part 140 in the clamping direction is machined to reduce the spacing between the disassembled part 140 and the two sides 145, so as to obtain the disassembled part 140' with a second spacing d2. Then, the machined disassembled part 140' is put back on the main shaft 110 or connecting rod 120 so that the measured second flattening angle θ2 reaches the preset value.

[0175] In some embodiments, see Figure 31 Multiple components 140 can be provided, and the spacing between the opposite sides 145 of the multiple components 140 in the clamping direction can be set to different dimensions. The components 140 can be made of machinable materials so that the spacing between the opposite sides 145 of the components 140 in the clamping direction can be changed. This makes it easier and more accurate to correct the flattening angle θ.

[0176] For example, in such Figure 8 In the rotating shaft mechanism 100 shown, the clamping direction of the disassembly part 140 is the thickness direction (Z direction) of the main shaft 110. For example... Figure 31 As shown, a first disassembler 140a, a second disassembler 140b, and a third disassembler 140c are provided, with the distances (d1, d2, d3) between their opposite sides 145 in the clamping direction increasing sequentially. The second disassembler 140b, with its centrally sized dimensions, can be initially mounted on the spindle 110 or connecting rod 120. If the flattening angle θ when the second disassembler 140b is mounted is too small, it can be replaced with the first disassembler 140a, which has a smaller distance. If the flattening angle θ when the second disassembler 140b is mounted is slightly small, it can be removed and machined to reduce the distance between its opposite sides 145 before being remounted on the spindle 110 or connecting rod 120. If the flattening angle θ when the second disassembler 140b is mounted is too large, it can be replaced with the third disassembler 140c, which has a larger distance. If the flattening angle θ of the third component 140c is slightly small, the third component 140c can be removed and machined to reduce the distance between the two opposite sides 145, and then reinstalled on the main spindle 110 or connecting rod 120. This makes it easier and more accurate to correct the flattening angle θ of the rotating shaft mechanism 100 to the preset value (allowing a certain deviation from 180°). If the flattening angle θ of a certain component 140 is good, the component 140 can be fixed to the main spindle 110 or connecting rod 120.

[0177] When the disassembly component 140 is positioned on opposite sides 145 in the clamping direction, in some embodiments, see [reference needed]. Figure 8 , Figure 23 The two opposite sides 145 of the disassembly part 140 in the clamping direction can be parallel to each other. When the disassembly part 140 is separated from the main shaft 110 or the connecting rod 120, it is convenient to use the measuring jaws of calipers to abut against the two opposite sides 145 of the disassembly part 140 to measure the distance between the two opposite sides 145 of the disassembly part 140, and then select a disassembly part 140 of appropriate size.

[0178] In other embodiments, the two opposite sides 145 of the disassembly member 140 form a predetermined angle in the clamping direction, and the two opposite sides 145 of the disassembly member 140 may not be parallel. By setting the disassembly member 140 to a suitable size, when the rotating shaft mechanism 100 is in a flattened state, the two opposite sides 145 of the disassembly member 140 abut against the connecting rod 120 and the main shaft 110 respectively, so that the flattening angle θ can reach a preset value.

[0179] There are several possible ways to install the disassembled part 140 onto the connecting rod 120 or the spindle 110. For example, the disassembled part 140 can be fixed to the connecting rod 120 or the spindle 110 using fasteners (such as screws); or, the disassembled part 140 can be fixed to the connecting rod 120 or the spindle 110 by adhesive bonding; or, the disassembled part 140 can be fixed to the connecting rod 120 or the spindle 110 by snap-fit; or, the disassembled part 140 can be fixed to the connecting rod 120 or the spindle 110 by welding. By pre-installing a disassembled part 140 of appropriate size onto the spindle 110 or the connecting rod 120, the flattening angle θ of the rotating shaft mechanism 100 reaches a preset value, and then using a fixing method, the disassembled part 140 can be conveniently and reliably fixed onto the spindle 110 or the connecting rod 120.

[0180] For example, the disassembled part 140 is fixed to the connecting rod 120 or the spindle 110 by screws. The disassembled part 140 has a stepped hole, and the connecting rod 120 or the spindle 110 has a threaded hole corresponding to the stepped hole. During assembly, the stepped hole and the threaded hole are aligned, the screw is passed through the stepped hole and threaded into the threaded hole, so that the head of the screw abuts against the stepped surface of the stepped hole, thereby fixing the disassembled part 140 to the connecting rod 120 or the spindle 110.

[0181] For example, the disassembly part 140 is fixed to the connecting rod 120 or the spindle 110 by a snap fastener. The disassembly part 140 has a snap fastener, and the connecting rod 120 or the spindle 110 has a snap fastener. By engaging the snap fastener and the snap fastener, the disassembly part 140 can be fixed to the connecting rod 120 or the spindle 110.

[0182] See Figure 8 , Figure 11 , Figure 23 , Figure 25 , Figure 33This application provides an assembly method for a rotating shaft mechanism 100, including: pivotally connecting a plurality of connecting rods 120 to a main shaft 110, wherein one or more connecting rods 120 are respectively provided on both sides of the main shaft 110 in the width direction (X direction);

[0183] Support members 130 are arranged on both sides of the width direction (X direction) of the spindle 110, so that the support members 130 are movably connected to the connecting rods 120 of the corresponding support members 130.

[0184] The flattening angle θ was measured when the disassembly angle of 140° was not set.

[0185] Pre-install the disassembled part 140 onto the connecting rod 120 or the spindle 110;

[0186] The flattening angle θ is measured when the disassembly angle is set to 140°.

[0187] If there is a deviation in the flattening angle θ, change the distance between the two opposite sides 145 of the disassembled part 140 in the clamping direction so that the flattening angle θ reaches the preset value.

[0188] When the flattening angle θ reaches the preset value, fix the disassembled part 140 onto the connecting rod 120 or the main shaft 110.

[0189] The deviation in the flattening angle θ refers to a significant deviation in the flattening angle θ, which does not meet the preset value. The preset value can be a range with a nominal dimension of 180° and a small deviation.

[0190] The assembly method of the rotating shaft mechanism 100 provided in this application embodiment involves setting a disassembly component 140 on the connecting rod 120 or the main shaft 110. The disassembly component 140 is a key component affecting the flattening angle θ between the support members 130 on both sides of the main shaft 110. The disassembly component 140 can be accurately measured or controlled, and its dimensions are stable. By using a disassembly component 140 of appropriate size, the flattening angle θ can be made to reach a preset value. The flattening angle θ of the rotating shaft mechanism 100 can be determined by considering only the distance between the disassembly component 140 and the two sides 145 in the clamping direction, thus shortening the dimensional chain. If the flattening angle θ of the rotating shaft mechanism 100 in the assembled state is not good, the disassembly component 140 can be directly removed from the rotating shaft mechanism 100, and then a disassembly component 140 of appropriate size can be installed to make the flattening angle θ reach the preset value. This achieves fast and low-cost flattening angle θ correction, improving the yield and production capacity of the rotating shaft mechanism 100. The hinge mechanism 100 is applied to the foldable device 1000. When the flattening angle θ reaches the preset value, the area on the flexible screen 400 corresponding to the hinge mechanism 100 has good flatness, resulting in good light and shadow display effect and high overall flattening precision.

[0191] There are several possible implementation methods when measuring the flattening angle θ of the rotating shaft mechanism 100. Two implementation methods are given as examples below.

[0192] The first method for measuring the flattening angle θ is: (See...) Figure 11 , Figure 25 The camera and data processing work together to flatten the rotating shaft mechanism 100. The camera captures images of the rotating shaft mechanism 100 along its axial direction (Y-direction), recording the corresponding edges of the support surfaces 131 of the support members 130 on both sides of the main shaft 110. The processor then calculates the included angle between these corresponding edges, which is the flattening angle θ of the rotating shaft mechanism 100. This measurement method offers high precision, facilitating accurate correction of the flattening angle θ of the rotating shaft mechanism 100.

[0193] The second method for measuring the flattening angle θ is: (See...) Figure 11 , Figure 25 An angle measuring tool (such as a protractor) is used to flatten the shaft mechanism 100. The angle measuring tool is placed on one side of the shaft mechanism 100 along the axial direction (Y direction). The angle of the corresponding side of the support surface 131 of the support member 130 on both sides of the main shaft 110 is measured by the angle measuring tool. The flattening angle θ of the shaft mechanism 100 can be measured. The flattening angle θ of the shaft mechanism 100 is corrected by using a disassembled part 140 of appropriate thickness.

[0194] Finally, it should be noted that 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 within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A rotating shaft mechanism, characterized in that, The utility model relates to a hinge mechanism, comprising: a main shaft, a plurality of connecting rods, a pair of support members and one or more detachable members; one or more of the connecting rods are respectively arranged on both sides of the main shaft along the width direction of the main shaft, and one end of each connecting rod is pivotally connected to the main shaft; each pair of support members is respectively arranged on both sides of the main shaft along the width direction of the main shaft, the support members on the same side of the main shaft are correspondingly arranged with the connecting rods, the support members are movably connected with the connecting rods corresponding to the support members, and each support member has a support surface; the connecting rods on both sides of the main shaft can rotate relative to the main shaft, and the support members can move with the connecting rods corresponding to the support members to switch the hinge mechanism between an unfolded state and a closed state; the main shaft or at least one of the connecting rods is provided with the detachable member; when the hinge mechanism is in the unfolded state, the detachable member is clamped between the connecting rod corresponding to the detachable member and the main shaft.

2. The rotation shaft mechanism according to claim 1, wherein the main shaft has a first horizontal matching surface, the connecting rod has a second horizontal matching surface, and the first horizontal matching surface or at least one of the second horizontal matching surfaces is provided with the detachable member; when the hinge mechanism is in the unfolded state, the first horizontal matching surface and the second horizontal matching surface are arranged to face each other, and the detachable member is clamped between the first horizontal matching surface and the second horizontal matching surface corresponding to the detachable member.

3. The rotation axis mechanism according to claim 2, wherein the detachable member comprises a sheet-shaped part, and when the hinge mechanism is in the unfolded state, the opposite sides of the sheet-shaped part along the thickness direction of the main shaft are respectively arranged to abut against the first horizontal matching surface and the second horizontal matching surface.

4. The rotation shaft mechanism according to claim 3, wherein the detachable member further comprises a first connecting part connected with the sheet-shaped part, and the first connecting part is connected with the connecting rod or the main shaft.

5. The rotation shaft mechanism according to claim 1, wherein the main shaft has two first vertical matching surfaces distributed in opposite directions along the width direction of the main shaft, the connecting rod has a second vertical matching surface, and at least one of the first vertical matching surfaces or at least one of the second vertical matching surfaces is provided with the detachable member; when the hinge mechanism is in the unfolded state, the first vertical matching surface and the second vertical matching surface are arranged to face each other, and the detachable member is clamped between the first vertical matching surface and the second vertical matching surface corresponding to the detachable member.

6. The rotation shaft mechanism according to claim 5, wherein the detachable member comprises a matching part, and when the hinge mechanism is in the unfolded state, the opposite sides of the matching part are respectively arranged to abut against the first vertical matching surface and the second vertical matching surface.

7. The rotation axis mechanism according to claim 6, wherein the detachable member further comprises a second connecting part connected with the matching part, and the second connecting part is connected with the connecting rod or the main shaft.

8. The revolute mechanism according to any one of claims 1 to 7, characterized in that the detachable member is made of a workable material; when the opposite sides of the detachable member in the clamping direction are at a first interval, the hinge mechanism is in the unfolded state, and the support surfaces of the support members on both sides of the main shaft form a first unfolded angle; when the opposite sides of the detachable member in the clamping direction are at a second interval, the hinge mechanism is in the unfolded state, and the support surfaces of the support members on both sides of the main shaft form a second unfolded angle.

9. The revolute mechanism according to any one of claims 1 to 8, wherein the opposite sides of the detachable member in the clamping direction are parallel to each other. Or, the opposite two sides of the subassembly in the clamping direction present a predetermined clamping angle.

10. The revolute mechanism according to any one of claims 1 to 9, characterized in that The connecting shaft connects the connecting rod and the main shaft. Or, the virtual shaft connects the connecting rod and the main shaft.

11. The revolute mechanism according to any one of claims 1 to 10, wherein The connecting rod or the main shaft has a positioning part, and the subassembly is positioned and installed on the positioning part.

12. The rotation mechanism according to claim 11, wherein The positioning part includes a sliding groove extending along a predetermined route, and the sliding groove has an opening through which the subassembly can enter and exit and be slidably installed on the sliding groove.

13. The revolute mechanism according to any one of claims 1 to 12, wherein The subassembly is fixed on the connecting rod or the main shaft by a fastener. Or, the subassembly is fixed on the connecting rod or the main shaft by adhesion. Or, the subassembly is fixed on the connecting rod or the main shaft by a buckle. Or, the subassembly is fixed on the connecting rod or the main shaft by welding.

14. A foldable device, characterized by The flexible screen device comprises a hinge mechanism, a first shell, a second shell and a flexible screen, the hinge mechanism is located between the first shell and the second shell, the connecting rod located on one side of the main shaft is connected with the first shell, the connecting rod located on the other side of the main shaft is connected with the second shell, two ends of the flexible screen are respectively fixed on the first shell and the second shell, and a middle region of the flexible screen is provided with the hinge mechanism.

15. The foldable device of claim 14, wherein, The flexible screen device is an inner folding structure, when the hinge mechanism is in a closed state, a screen containing space is formed between the first shell, the hinge mechanism and the second shell, the flexible screen is partially folded and located in the screen containing space. Or, the flexible screen device is an outer folding structure. When the hinge mechanism is in a closed state, the flexible screen is partially folded and wrapped outside the first shell and the second shell.

16. A method of assembling a revolute mechanism according to any one of claims 1 to 13, characterized in that, The hinge mechanism comprises: A plurality of connecting rods are pivoted on a main shaft, and one or more connecting rods are arranged on each side of the main shaft in the width direction. Supporting members are arranged on each side of the main shaft in the width direction, and the supporting members are movably connected with the connecting rods corresponding to the supporting members. The unfolded angle of the flexible screen device without the subassembly is measured. The subassembly is pre-installed on the connecting rod or the main shaft. The unfolded angle of the flexible screen device with the subassembly is measured. When the unfolded angle deviates, the distance between the opposite two sides of the subassembly in the clamping direction is changed to make the unfolded angle reach a preset value. When the unfolded angle reaches the preset value, the subassembly is fixed on the connecting rod or the main shaft.

Images