Rotating shaft mechanism, design method thereof and electronic equipment

Abstract

The invention discloses a rotating shaft mechanism, a design method thereof and electronic equipment, and belongs to the technical field of electronic equipment. The rotating shaft mechanism comprises a base, a first swing arm and an adjusting piece. When the first swing arm is located at the unfolding position, an angle formed between the first swing arm and the base is a flattening angle; the adjusting part is rigidly connected with the first swing arm, the adjusting part is provided with a first abutting face, the base is provided with a second abutting face, and when the first swing arm is located at the unfolding position, the first abutting face abuts against the second abutting face; the adjusting part is configured to be capable of moving in the first direction relative to the first swing arm so that the flattening angle can be within the preset angle range. The electronic equipment comprises a first sub-shell, a second sub-shell and a rotating shaft mechanism. The reliability of the electronic equipment is guaranteed, and the yield of the electronic equipment or the rotating shaft mechanism is improved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a rotating shaft mechanism and a design method thereof, and electronic equipment. Background Art

[0002] With the increasing popularity of electronic devices such as mobile phones and tablets, they have become an indispensable part of people's daily lives. In order to meet the convenience and portability of electronic devices, foldable electronic devices have emerged; with the gradual maturity and application of flexible display technology, foldable electronic devices not only meet the portability, but also allow users to experience the visual impact brought by the large screen.

[0003] A foldable electronic device includes two middle frames and a hinge mechanism, the two middle frames are respectively connected to the hinge mechanism, and the flexible display screen is respectively fixedly connected to the two middle frames. The foldable electronic device switches between the folded state and the unfolded state through the hinge mechanism; in the unfolded state, the parts of the flexible display screen that are respectively fixedly connected to the middle frames need to be basically in the same plane, and this state can be said to be that the flexible display screen is in a flattened state; in the flattened state, the user's viewing experience is also the best. However, since the hinge mechanism and the middle frame are becoming thinner and thinner, and the processing technology has precision limits, they cannot meet the tolerance band requirements of the flattened state, resulting in a low yield of the electronic device or the hinge mechanism. Summary of the invention

[0004] The present application provides a hinge mechanism and a design method thereof, and an electronic device, in order to solve the technical problem that the yield of the electronic device or hinge mechanism is low because the hinge mechanism and the middle frame are made thinner and thinner, and the processing technology has precision limits and cannot meet the tolerance band requirements of the flattened state.

[0005] The technical solution is as follows:

[0006] A first aspect of the present application provides a rotating shaft mechanism, which includes: a base, a first swing arm and an adjusting member;

[0007] The first swing arm is rotatably connected to the base, and the first swing arm can rotate between an unfolded position and a folded position relative to the base; when the first swing arm is in the unfolded position, the angle formed between the first swing arm and the base is a flattening angle;

[0008] The adjusting member is rigidly connected to the first swing arm, the adjusting member has a first abutting surface, and the base has a second abutting surface. When the first swing arm is in the unfolded position, the first abutting surface abuts against the second abutting surface.

[0009] The adjusting member is configured to be movable in a first direction relative to the first swing arm so that the flattening angle is within a preset angle range.

[0010] By adopting the above scheme, when designing the first swing arm and the base, the accuracy of the processing technology can be appropriately reduced, and the first swing arm and the base can be designed to be over-expanded, that is, the flattening angle is greater than 180 degrees, thereby reducing the processing accuracy of both and reducing the error requirement during flattening; an adjusting member is installed on the first swing arm, and the adjusting member is rigidly connected to the first swing arm, so that the adjusting member is moved in a first direction of the first swing arm to adjust the flattening angle between the first swing arm and the base when the first swing arm is in the expanded position, and the flattening angle meets the preset angle requirement. That is to say, the present application can fine-tune the flattening angle through the adjusting member while appropriately reducing the processing accuracy of the first swing arm and the base so that the flattening angle between the first swing arm and the base is within the range of 180 degrees. The flattening angle between the first swing arm and the adjusting member meets the tolerance band requirement of the flattened state; when the flattening angle meets the preset angle requirement, due to the rigid connection between the first swing arm and the adjusting member, the stability of the first swing arm in the unfolded position is guaranteed. Therefore, at the moment when the first abutting surface abuts against the second abutting surface, the second abutting surface applies force to the first abutting surface, and the force can be directly transmitted to the first swing arm. Since the first swing arm is still rotationally connected to the base, it is not easy to jitter at the moment when the first abutting surface abuts against the second abutting surface, which is conducive to avoiding the brief moment of over-expansion, thereby ensuring that the display screen on the electronic device will not be pulled or squeezed due to over-expansion, thereby ensuring the reliability of the electronic device and improving the yield of the electronic device or the hinge mechanism.

[0011] In some implementations, the first swing arm has a first surface, and the first surface is configured to be disposed opposite to the second abutment surface when the first swing arm is in the deployed position;

[0012] The first abutting surface can be convex to the first surface;

[0013] When the first swing arm is in the unfolded position, the distance between the first surface and the first abutting surface can be changed during the movement of the adjusting member relative to the first swing arm in the first direction.

[0014] By adopting the above scheme, the first abutting surface is used to protrude the first surface so that the first abutting surface and the second abutting surface can abut each other, and since the adjusting member is rigidly connected to the first swing arm, when the adjusting member moves relative to the first swing arm, the distance between the first surface and the first abutting surface changes, and thus the distance between the first surface and the second abutting surface can be changed, thereby adjusting the flattening angle to meet the preset angle range.

[0015] In some implementations, an angle is formed between the first direction and a rotation axis of the first swing arm relative to the base.

[0016] By adopting the above solution, it is helpful to simplify the design of the adjustment member for adjusting the flattening angle, and the adjustment of the flattening angle can be realized more conveniently, and the adjustment accuracy can be improved.

[0017] In some implementations, the angle between the first direction and the rotation axis of the first swing arm relative to the base is a right angle; the first direction is also parallel to the length direction of the first swing arm.

[0018] By adopting the above solution, the adjusting member can directly change the flattening angle when moving along the first direction, so that the accuracy of the flattening angle can be conveniently controlled to meet the preset angle range.

[0019] In some implementations, the adjustment member is further configured to be fixedly connected to the first swing arm after the flattening angle is within a preset angle range.

[0020] By adopting the above scheme, after the flattening angle is adjusted by the adjusting member to be within the preset angle range, the adjusting member is fixedly connected to the first swing arm. In this way, during the use of the rotating shaft mechanism, the adjusting member and the first swing arm will not be displaced, which is beneficial to ensure that the flattening angle is maintained within the preset angle range during the use of the rotating shaft mechanism.

[0021] In some implementations, the adjusting member is fixed to the first swing arm by welding.

[0022] By adopting the above scheme, after the flattening angle is adjusted by the adjusting member, the adjusting member and the first swing arm are fixed by welding, thereby realizing a rigid connection between the two, thereby improving the stability of the overall structure formed by the adjusting member and the first swing arm, and ensuring that it is not easy to deform or loosen when subjected to external loads or impacts. In addition, since it is still a rigid connection, a better stress transfer is formed between the adjusting member and the first swing arm, so that each component can better share the load, thereby extending the service life of the overall structure. Secondly, after the flattening angle is adjusted by the adjusting member, the adjusting member and the first swing arm can be assembled together in one step by welding, without the need for additional connectors or fasteners, which can not only reduce production costs, but also simplify the assembly process and improve production efficiency. Furthermore, the relative position between the two can be ensured by welding, thereby ensuring accuracy. Finally, due to the strong connection of welding, the connection between the adjusting member and the first swing arm is not easy to be damaged, thereby reducing the need for daily maintenance and repair.

[0023] In some implementations, the first swing arm has an adjustment hole extending along the first direction, the adjustment member is a columnar structure, and at least a portion of the columnar structure is located in the adjustment hole;

[0024] The first abutting surface is an end surface of the columnar structure.

[0025] By adopting the above scheme, an adjustment hole is opened on the first swing arm, which is convenient for manufacturing and installation of the adjustment member; and the columnar adjustment member can have a stronger supporting force, so as to achieve a flattening angle that meets the preset angle range and has a stronger stability.

[0026] In some implementations, the adjustment hole has an internal thread, and the columnar structure has an external thread matching the internal thread.

[0027] By adopting the above scheme, the adjusting member and the first swing arm are threadedly connected, so that the flattening angle can be accurately adjusted and the rigid connection between the adjusting member and the first swing arm can be ensured. Moreover, when the adjusting member adjusts the flattening angle to make the flattening angle within a preset angle range, when the two are fixed by welding or other methods, it can also be ensured that the adjusted flattening angle is not easy to change.

[0028] In some implementations, the columnar structure includes an inserting portion and an abutting portion, and the inserting portion is connected to the abutting portion;

[0029] At least a portion of the insertion portion is located in the adjustment hole, and a diameter of the abutment portion is greater than a diameter of the insertion portion;

[0030] The first abutting surface is located on the abutting portion.

[0031] By adopting the above scheme, the insertion part is inserted into the adjustment hole to ensure the rigid connection between the adjustment member and the first swing arm, and the diameter of the abutment part is larger than the diameter of the insertion part, so that the first abutment surface has a larger contact area; when the first abutment surface contacts the second abutment surface, it helps to disperse the load and enhance the stability and reliability of the structure; in this way, the service life of the adjustment member can be improved, and even if the abutment surface is worn during long-term use, it will not affect the accuracy of the flattening angle; in addition, due to the existence of the abutment part, the first abutment surface can have a larger and appropriate area, so that the generation of pits on the base during the continuous contact between the first abutment surface and the second abutment surface can be reduced, thereby affecting the accuracy of the flattening angle.

[0032] In some implementations, the first swing arm further has an injection hole, the injection hole is connected to the adjustment hole, and an axial direction of the adjustment hole and an axial direction of the injection hole form an angle;

[0033] The injection hole is filled with solid phase change material so that the adjusting member is fixedly connected to the first swing arm.

[0034] By adopting the above solution, it is beneficial to achieve a fixed connection between the adjusting member and the first swing arm by filling the phase change material.

[0035] In some implementations, the phase change material is glue or solder.

[0036] By adopting the above solution, the cost of fixing the adjusting member and the first swing arm can be reduced, and the fixing method is relatively convenient and easy to implement.

[0037] In some implementations, the first swing arm has a sliding portion and a rotating portion, and the sliding portion is fixedly connected to the rotating portion;

[0038] The adjusting member is mounted on the sliding portion, and the first surface is disposed on the sliding portion;

[0039] The base includes a middle beam, the second abutting surface is arranged on the middle beam, and the rotating part is rotatably connected to the middle beam;

[0040] The rotating shaft mechanism also includes a connecting piece, and the sliding part is slidably connected to the connecting piece;

[0041] The connecting piece has a sliding groove, the sliding part is limited in the sliding groove, and the sliding part can move along the guiding direction of the sliding groove.

[0042] By adopting the above scheme, an adjusting member is provided on the first swing arm slidably connected to the base, which is conducive to the installation and adjustment of the adjusting member. That is, after the shaft mechanism is assembled, the position for adjusting the adjusting member can be exposed to the outside, thereby facilitating the adjustment and fixing of the adjusting member.

[0043] In some implementations, the rotating portion has a first arc surface and a second arc surface opposite to each other, so that the rotating portion is in an arc shape;

[0044] The base also includes a cover plate, which is fixedly connected to the middle beam; the cover plate has a third arc surface, and the middle beam has a fourth arc surface opposite to the third arc surface, so that an arc groove is formed between the middle beam and the cover plate;

[0045] The first arc surface matches with the third arc surface, and the second arc surface matches with the fourth arc surface, so that the rotating part is rotatably arranged in the arc groove.

[0046] By adopting the above scheme, the arc-shaped rotating part is matched with the arc groove to achieve a rotational connection between the first swing arm and the base in the form of a virtual axis. This is also conducive to setting a second abutment surface on the base, setting a first surface on the first swing arm, and facilitating the abutment between the first abutment surface and the second abutment surface.

[0047] In some implementations, the first abutting surface is a plane or a curved surface; the second abutting surface is a plane or a curved surface.

[0048] By adopting the above solution, the shapes of the first abutting surface and the second abutting surface can be determined according to actual design requirements. In addition, the first abutting surface and the second abutting surface are both planes, which is convenient for processing the planes on the one hand, and can easily achieve the preset angle range of the flattening angle by using the adjustment member on the other hand, and ensure the adjustment accuracy.

[0049] A second aspect of the present application provides a design method for a rotating shaft mechanism, comprising:

[0050] An adjusting member is installed on a first swing arm rotatably connected to the base, and the adjusting member is rigidly connected to the first swing arm, wherein the adjusting member has a first abutting surface;

[0051] A second abutting surface matched with the first abutting surface is designed on the base, so that when the first swing arm is in the unfolded position, the first abutting surface abuts against the second abutting surface, wherein when the first swing arm is in the unfolded position, the angle formed between the first swing arm and the base is the flattening angle;

[0052] When the first swing arm is in the unfolded position, the adjusting member is moved in a first direction relative to the first swing arm so that the flattening angle is within a preset angle range;

[0053] After the flattening angle is within the preset angle range, the adjusting member is fixedly connected to the first swing arm.

[0054] By adopting the above scheme, when designing the first swing arm and the base, the accuracy of the processing technology can be appropriately reduced, and the first swing arm and the base can be designed to be over-expanded, that is, the flattening angle is greater than 180 degrees, so as to reduce the processing accuracy of both and reduce the error requirement when flattening; an adjusting member is installed on the first swing arm, and the adjusting member is rigidly connected to the first swing arm, so that the adjusting member is moved in a first direction of the first swing arm to adjust the flattening angle between the first swing arm and the base when the first swing arm is in the expanded position, and the flattening angle meets the preset angle requirement; when the flattening angle meets the preset angle requirement, due to the rigid connection between the first swing arm and the adjusting member, the stability of the first swing arm in the expanded position is guaranteed, so that the first abutment surface and the second abutment surface are connected. At the moment of abutment, the second abutment surface applies force to the first abutment surface, and the force can be directly transmitted to the first swing arm. Since the first swing arm and the base are still rotationally connected, it is not easy to generate jitter at the moment when the first abutment surface abuts the second abutment surface, which is conducive to avoiding the brief moment of over-expansion, thereby ensuring that the display screen on the electronic device will not be pulled or squeezed due to over-expansion, thereby ensuring the reliability of the electronic device; and after adjusting the flattening angle by using the adjusting member to make it within the preset angle range, the adjusting member is fixedly connected to the first swing arm, so that during the use of the hinge mechanism, the adjusting member will not be displaced from the first swing arm, thereby ensuring that during the use of the hinge mechanism, the flattening angle is maintained within the preset angle range.

[0055] In some implementations, the adjusting member is fixedly connected to the first swing arm, including:

[0056] The adjusting member is fixed to the first swing arm by welding or gluing.

[0057] By adopting the above solution, the cost of fixing the adjusting member and the first swing arm can be reduced, and the fixing method is relatively convenient and easy to implement.

[0058] A third aspect of the present application provides an electronic device, comprising a first sub-shell, a second sub-shell, and a hinge mechanism in any of the above embodiments, or a hinge mechanism designed using a design method for a hinge mechanism in any of the above embodiments;

[0059] The first sub-shell and the second sub-shell are respectively connected to the rotating shaft mechanism, and the first sub-shell and the second sub-shell can rotate relative to each other through the rotating shaft mechanism.

[0060] By adopting the above scheme, when designing the first swing arm and the base, the precision of the processing technology can be appropriately reduced, and the first swing arm and the base can be designed to be over-expanded, that is, the flattening angle is greater than 180 degrees, so as to reduce the error requirement of the two when flattened; an adjusting member is installed on the first swing arm, and the adjusting member is rigidly connected to the first swing arm, so that the adjusting member is moved in the first direction of the first swing arm to adjust the flattening angle between the first swing arm and the base when the first swing arm is in the expanded position, and the flattening angle meets the preset angle requirement; when the flattening angle meets the preset angle requirement, due to the first swing arm and the base The rigid connection between the adjusting parts ensures the stability of the first swing arm in the expanded position. Therefore, at the moment when the first abutting surface abuts the second abutting surface, the second abutting surface applies force to the first abutting surface, and the force can be directly transmitted to the first swing arm. Since the first swing arm and the base are still rotationally connected, it is not easy to jitter at the moment when the first abutting surface abuts the second abutting surface, which is conducive to avoiding the brief moment of over-extension, thereby ensuring that the display screen on the electronic device will not be pulled or squeezed due to over-extension, thereby ensuring the reliability of the electronic device and improving the yield of the electronic device or the hinge mechanism.

[0061] In some implementations, the electronic device further includes a flexible display screen, and the first sub-shell and the second sub-shell are respectively fixedly connected to the flexible display screen.

[0062] By adopting the above solution, it is achieved that the rotating shaft mechanism with the adjusting member is applied to the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0063] Figure 1 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application in a folded state;

[0064] Figure 2 is a schematic diagram of the structure of an electronic device provided by an embodiment of the present application in a semi-expanded state;

[0065] Figure 3is a schematic structural diagram of an electronic device provided in an embodiment of the present application in an unfolded state;

[0066] Figure 4 is a schematic structural diagram of another electronic device in a semi-expanded state provided by an embodiment of the present application;

[0067] Figure 5 It is a partial structural schematic diagram of a rotating shaft mechanism in the related art;

[0068] Figure 6 is a structural schematic diagram of a rotating shaft mechanism provided in an embodiment of the present application;

[0069] Figure 7 is a structural schematic diagram of the rotating shaft mechanism provided in an embodiment of the present application from another perspective;

[0070] Figure 8 It is a partial structural schematic diagram of the rotating shaft mechanism provided in the embodiment of the present application;

[0071] Fig. 9 is a cross-sectional view of a partial structure of a rotating shaft mechanism in an embodiment of the present application;

[0072] Fig.10 is a cross-sectional view of another partial structure of the rotating shaft mechanism in the embodiment of the present application;

[0073] Fig.11 is a cross-sectional view of another partial structure of the rotating shaft mechanism in the embodiment of the present application;

[0074] Fig.12 is a schematic diagram of the structure of the adjusting member in the embodiment of the present application;

[0075] Fig.13 is a schematic diagram of the partial structure of the first swing arm in the embodiment of the present application;

[0076] Fig.14 is another schematic diagram of a partial structure of the rotating shaft mechanism in an embodiment of the present application;

[0077] Fig.15 is a schematic structural diagram of the first swing arm in an embodiment of the present application;

[0078] Fig.16 It is a structural schematic diagram of the first swing arm from another perspective in the embodiment of the present application.

[0079] The meanings of the figures are as follows:

[0080] 11. Swing arm structure; 12. Mounting seat;

[0081] 100, shaft mechanism; 101, base; 102, first swing arm; 103, connecting member; 104, first door panel; 105, connecting swing arm; 106, arc structure; 107, arc slide groove; 108, adjusting member; 109, first abutting surface; 110, second abutting surface; 111, middle beam; 112, cover plate; 113, first reference surface; 114, second reference surface; 115, slide groove; 116, slide Moving wing; 117, first surface; 118, adjustment hole; 119, injection hole; 120, insertion portion; 121, abutment portion; 122, first hole portion; 123, second hole portion; 124, sliding portion; 125, rotating portion; 126, main structure; 127, second surface; 128, first arc surface; 129, second arc surface; 130, third arc surface; 131, fourth arc surface; 132, arc groove;

[0082] 200, display screen; 201, first part; 202, second part; 203, foldable part; 301, first sub-shell; 302, second sub-shell. DETAILED DESCRIPTION

[0083] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0084] It should be understood that the "multiple" mentioned in this application refers to two or more. In the description of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B; "and / or" in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in order to facilitate the clear description of the technical solution of this application, the words "first" and "second" are used to distinguish between the same items or similar items with basically the same functions and effects. Those skilled in the art can understand that the words "first" and "second" do not limit the quantity and execution order, and the words "first" and "second" do not limit them to be different.

[0085] The rotating shaft mechanism and its design method, and the electronic device provided in the embodiments of the present application are explained in detail below.

[0086] See also Figures 1 to 3 , Figure 1 is a schematic diagram of the structure of an electronic device in a folded state provided by an embodiment of the present application, Figure 2 is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application in a semi-expanded state, Figure 3 It is a schematic diagram of the structure of an electronic device provided in an embodiment of the present application in an unfolded state.

[0087] In one or more embodiments, the present application provides an electronic device, which may be a foldable electronic device; the electronic device includes a housing and a hinge mechanism 100, the housing includes a first sub-shell 301 and a second sub-shell 302, the first sub-shell 301 and the second sub-shell 302 are respectively connected to the hinge mechanism 100, and the first sub-shell 301 and the second sub-shell 302 can rotate relative to each other through the hinge mechanism 100. Exemplary electronic devices may be mobile phones, tablet computers, notebooks, or e-readers. Foldable electronic devices are not limited to electronic devices with foldable display screens 200, such as mobile phones, but may also be electronic devices that can be folded or unfolded between the display screen 200 and the keyboard, such as laptop computers. It is understandable that the electronic device may also be an electronic device without a display screen 200. In addition, the electronic device may also be an earphone charging box, and the hinge mechanism 100 realizes the hinge between the box body and the box cover of the earphone charging box; further, the hinge mechanism 100 may also be the hinge of a notebook.

[0088] In the embodiment of the present application, the electronic device is a mobile phone as an example, and the electronic device further includes a display screen 200, which can be a flexible display screen 200, and the display screen 200 is respectively connected to the first sub-shell 301 and the second sub-shell 302. The first sub-shell 301 and the second sub-shell 302 can include the middle frame of the mobile phone.

[0089] For ease of description, as shown in the figure, the width direction of the foldable electronic device can be defined as the BB direction, the length direction of the foldable electronic device can be defined as the AA direction, and the thickness direction of the foldable electronic device can be defined as the CC direction. The AA direction, the BB direction, and the CC direction are mutually perpendicular to each other to form a rectangular coordinate system. The axial direction of the rotating shaft mechanism 100 is parallel to the AA direction.

[0090] Figure 1 The foldable electronic device is shown in a folded state. Figure 2 The foldable electronic device is shown in a semi-expanded state. Figure 3 The foldable electronic device is shown in an unfolded state. Figure 2 The unfolding angle α of the foldable electronic device shown is 90 degrees. Figure 3 The unfolding angle β of the foldable electronic device is 180 degrees. The state of the electronic device is the same as the state of the hinge mechanism 100, that is, when the foldable electronic device is in the folded state, the hinge mechanism 100 is also in the folded state; when the foldable electronic device is in the semi-expanded state, the hinge mechanism 100 is also in the semi-expanded state; when the foldable electronic device is in the unfolded state, the hinge mechanism 100 is also in the unfolded state.

[0091] It should be noted that the angles illustrated in the embodiments of the present application are allowed to have slight deviations. Figure 2The unfolding angle α of the foldable electronic device shown is 90 degrees, which means that α can be 90 degrees, or approximately 90 degrees, such as 80 degrees, 85 degrees, 95 degrees or 100 degrees. Figure 3 The unfolding angle β of the foldable electronic device shown is 180 degrees, which means that β can be 180 degrees, or approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, and 190 degrees, etc. The angles described below can be understood in the same way.

[0092] Please combine Figure 1 and Figure 2 As shown, the first sub-shell 301 and the second sub-shell 302 are respectively installed on both sides of the hinge mechanism 100, and the display screen 200 includes a first part 201, a second part 202 and a foldable part 203. The foldable part 203 is located between the first part 201 and the second part 202, and the foldable part 203 can be bent around an axis parallel to the AA direction. In this embodiment, the display screen 200 adopts a flexible display screen, for example, an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display screen, a mini organic light-emitting diode (miniorganic light-emitting diode) display screen, a micro organic light-emitting diode (micro organic light-emitting diode) display screen, a quantum dot light emitting diode (quantum dot light emitting diodes, QLED) display screen, etc.

[0093] The first sub-shell 301 and the second sub-shell 302 are relatively close to each other to drive the display screen 200 to fold, so that the foldable electronic device can be folded. When the foldable electronic device is in the folded state, the foldable portion 203 of the display screen 200 is bent, and the first portion 201 and the second portion 202 are arranged opposite to each other. At this time, the display screen 200 is between the first sub-shell 301 and the second sub-shell 302, which can greatly reduce the probability of the display screen 200 being damaged, thereby achieving effective protection of the display screen 200.

[0094] Please also read Figure 2, the first sub-shell 301 and the second sub-shell 302 rotate relative to each other through the hinge mechanism 100, and the first sub-shell 301 and the second sub-shell 302 move away from each other to drive the display screen 200 to unfold, so that the foldable electronic device is unfolded to a semi-expanded state. When the foldable electronic device is in the semi-expanded state, the first sub-shell 301 and the second sub-shell 302 unfold to an angle of α, the first part 201 and the second part 202 unfold relative to each other, and drive the foldable part 203 to unfold. At this time, the angle between the first part 201 and the second part 202 is α.

[0095] Please combine Figure 2 and Figure 3 As shown, the first sub-shell 301 and the second sub-shell 302 rotate relative to each other through the hinge mechanism 100, and the first sub-shell 301 and the second sub-shell 302 move away from each other to drive the display screen 200 to further unfold until the foldable electronic device is flattened. The hinge mechanism 100 can have a damping mechanism to achieve the opening and closing feel and state maintenance during the rotation process.

[0096] When the electronic device is in a flattened state, the angle between the first sub-shell 301 and the second sub-shell 302 is β. The foldable portion 203 is unfolded, and the first portion 201 and the second portion 202 are relatively unfolded. At this time, the angles between the first portion 201, the second portion 202 and the foldable portion 203 are all β, and the display screen 200 has a large display area, realizing a large-screen display of the foldable electronic device, and improving the user experience.

[0097] It should be noted that the angle α and the angle β are both the angles between the first sub-shell 301 and the second sub-shell 302, which are only used to distinguish the different angles between the first sub-shell 301 and the second sub-shell 302 in different states of the foldable electronic device. The angle α refers to the angle between the first sub-shell 301 and the second sub-shell 302 when the foldable electronic device is in a semi-expanded state; the angle β refers to the angle between the first sub-shell 301 and the second sub-shell 302 when the foldable electronic device is in an expanded state.

[0098] In the examples of this application, see Figures 1 to 3 As shown, the mobile phone can be an inward folding screen mobile phone. After the inward folding screen mobile phone is folded, the display screen 200 is hidden, and the first sub-shell 301 and the second sub-shell 302 are exposed, so that the display screen 200 is protected by the first sub-shell 301 and the second sub-shell 302. Figure 4 is a structural schematic diagram of another electronic device in a semi-expanded state provided by an embodiment of the present application; see Figure 4 As shown, when the electronic device is a mobile phone, the mobile phone can also be an external folding screen mobile phone. After the external folding screen mobile phone is folded, the first subshell 301 and the second subshell 302 are opposite to each other, so that the display screen 200 is exposed.

[0099] Figure 5 It is a partial structural diagram of the rotating shaft mechanism in the related art, see Figure 5 As shown, the swing arm structure 11 of the rotating shaft mechanism is rotatably connected with the mounting seat 12 of the rotating shaft mechanism, and the swing arm structure 11 is in an unfolded state relative to the mounting seat 12; when the swing arm structure 11 is in an unfolded state relative to the mounting seat 12, the parts of the flexible display screen that are respectively fixedly connected to the middle frame can be basically in the same plane, and this state can be called the flexible display screen is in a flattened state. However, since the rotating shaft mechanism and the middle frame are becoming thinner and thinner, and there is a precision limit in the processing technology, that is, the processing precision of the swing arm structure 11 and the mounting seat 12 is limited, after the swing arm structure 11 and the mounting seat 12 are matched, the tolerance band requirement of the flattening angle in the flattened state cannot be guaranteed, resulting in a low yield of the electronic device or the rotating shaft mechanism, and a large flattening angle threshold, which affects the user experience.

[0100] In order to solve the problems in the related art, the embodiment of the present application further provides a hinge mechanism 100, as well as a design that improves user experience and optimizes the flattening angle.

[0101] Figure 6 is a schematic structural diagram of a rotating shaft mechanism 100 provided in an embodiment of the present application; Figure 7 1 is a structural schematic diagram of another perspective of the rotating shaft mechanism 100 provided in an embodiment of the present application; in one or more embodiments, the rotating shaft mechanism 100 includes a base 101, a connecting member 103 and a first door panel 104; the first door panel 104 is rotatably connected to the base 101, and the first door panel 104 is also rotatably connected to the connecting member 103; illustratively, Figure 6 and Figure 7 The outer hinge mechanism 100 shown can be applied to an outer folding screen mobile phone; the number of the connecting members 103 is two, the number of the first door panels 104 is two, the two connecting members 103 are respectively arranged on the opposite sides of the base 101, and the two first door panels 104 are respectively arranged on the opposite sides of the base 101, the first door panels 104 are located between the base 101 and the connecting member 103, one of the connecting members 103 is used to be fixedly connected to the first sub-shell 301, and the other connecting member 103 is used to be fixedly connected to the second sub-shell 302. The first door panel 104 is used to support the foldable part 203 of the display screen 200 when the electronic device is folded. It should be noted that the hinge mechanism 100 provided in the embodiment of the present application is not limited to the application in the outer folding screen mobile phone, but can also be applied in the inner folding screen mobile phone; in addition, it can also be applied to other possible scenarios, such as a sliding door with a hinge accessory.

[0102] Figure 8 is a partial structural diagram of the rotating shaft mechanism 100 provided in the embodiment of the present application; see Figure 8As shown, in some embodiments, the rotating shaft mechanism 100 further includes a connecting swing arm 105, one end of which is rotatably connected to the base 101, and the other end of which is rotatably connected to the connecting member 103, and the first door panel 104 is fixedly connected to the portion between the two ends of the connecting swing arm 105, so that the first door panel 104 can move as the connecting swing arm 105 rotates relative to the base 101. The two ends of the connecting swing arm 105 are respectively provided with an arc structure 106, and the connecting member 103 and the base 101 are respectively provided with an arc chute 107 that matches the arc structure 106, and the arc structure 106 is limited in the arc chute 107 to prevent the arc structure 106 from escaping from the arc chute 107, but the arc structure 106 can rotate in the arc chute 107 around an axis parallel to the AA direction.

[0103] Fig. 9 is a cross-sectional view of a partial structure of the rotating shaft mechanism 100 in the embodiment of the present application; Figure 8 and Fig. 9As shown, in some embodiments, the hinge mechanism 100 also includes a first swing arm 102 and an adjusting member 108; the first swing arm 102 is rotatably connected to the base 101, and the first swing arm 102 can rotate between an unfolded position and a folded position relative to the base 101; when the first swing arm 102 is in the unfolded position, the angle formed between the first swing arm 102 and the base 101 is a flattening angle γ; the adjusting member 108 is rigidly connected to the first swing arm 102, the adjusting member 108 has a first abutting surface 109, and the base 101 has a second abutting surface 110, and when the first swing arm 102 is in the unfolded position, the first abutting surface 109 abuts against the second abutting surface 110; wherein the adjusting member 108 is configured to be able to move in a first direction relative to the first swing arm 102 so that the flattening angle is within a preset angle range. Since the adjusting member 108 is used to adjust the flattening angle, the accuracy of the processing technology can be appropriately reduced when designing the first swing arm 102 and the base 101, and the first swing arm 102 and the base 101 can be designed to be over-expanded, that is, the flattening angle is greater than 180 degrees, so as to reduce the error requirements of the two when flattening. After being designed to be over-expanded, the range of the flattening angle is greater than 180 degrees and not greater than 190 degrees, which is convenient for the adjusting member 108 to adjust. After being designed to be over-expanded, the specific value of the unfolding angle can be 184 degrees, 185 degrees or 186 degrees, etc. Of course, after over-expanding, the flattening angle can also be a range; the adjusting member 108 is installed on the first swing arm 102, and the adjusting member 108 is rigidly connected to the first swing arm 102, so that the adjusting member 108 moves in the first direction of the first swing arm 102 to adjust the first swing arm 102 when the first swing arm 102 is in the unfolded position. The flattening angle between the arm 102 and the base 101 is adjusted to meet the preset angle requirement; when the flattening angle meets the preset angle requirement, due to the rigid connection between the first swing arm 102 and the adjusting member 108, the stability of the first swing arm 102 in the expanded position is guaranteed. Therefore, at the moment when the first abutting surface 109 abuts against the second abutting surface 110, the second abutting surface 110 applies force to the first abutting surface 109, and the force can be directly transmitted to the first swing arm 102. Since the first swing arm 102 and the base 101 are still rotationally connected, it is not easy to generate jitter at the moment when the first abutting surface 109 abuts against the second abutting surface 110, which is conducive to avoiding the brief moment of over-expansion, thereby ensuring that the display screen on the electronic device will not be pulled or squeezed due to over-expansion, thereby ensuring the reliability of the electronic device and improving the yield of the electronic device or the hinge mechanism 100. Exemplarily, the base 101 includes a middle beam 111 and a cover plate 112, and the cover plate 112 is fixedly connected to the middle beam 111. Exemplarily, the cover plate 112 can be detachably fixedly connected to the middle beam 111 by screws. When the hinge mechanism 100 is in the unfolded state, the first direction is parallel to the BB direction.

[0104] It should be noted that over-expansion means that the hinge mechanism 100 is over-expanded in the expansion direction; when the electronic device is an inner folding screen mobile phone, over-expansion may pull the display screen 200; and when the electronic device is an outer folding screen mobile phone, over-expansion may squeeze the display screen 200. In some other possible cases, the adjustment member 108 may also be disposed on the base 101, for example, on the middle beam 111 or the cover plate 112.

[0105] In some embodiments, the first swing arm 102 is positioned on the pivot mechanism 100 close to the axial end of the pivot mechanism 100 , which makes it convenient to set the first abutment surface 109 on the first swing arm 102 and the second abutment surface 110 on the base 101 , and facilitates the measurement of the flattening angle and the design of the adjustment member 108 .

[0106] In some embodiments, for the convenience of measurement, the flattening angle γ is represented by the angle formed between the first reference surface 113 of the first swing arm 102 and the second reference surface 114 of the base 101; the first reference surface 113 and the second reference surface 114 can be planes respectively; in theory, when the first reference surface 113 is parallel to the second reference surface 114, the flattening angle γ is 180 degrees; and the angle formed between the first reference surface 113 and the second reference surface 114 satisfies the preset angle range, which is the flattening angle γ is within a preset angle range; the flattening angle γ satisfies the preset angle range: a≤γ≤b, a is less than or equal to b, wherein 175 degrees≤a≤180 degrees, 180 degrees≤b≤185 degrees, illustratively, a can be 175 degrees, 176 degrees, 177 degrees, 178 degrees, 179 degrees or 180 degrees, b can be 180 degrees, 181 degrees, 182 degrees, 183 degrees, 184 degrees or 185 degrees; of course, the two end values ​​a and b of the preset angle range can also be determined according to actual design requirements. Exemplarily, the second reference surface 114 can be located on the cover plate 112. Of course, in some other possible cases, the second reference surface 114 can also be located on the center beam 111.

[0107] In some embodiments, the first swing arm 102 is also slidably connected to the connecting member 103, so that when the connecting member 103 is moved, the first swing arm 102 and the connecting member 103 slide, and the connecting member 103 drives the first swing arm 102 to rotate relative to the base 101 at the same time. Since the connecting swing arm 105 is rotatably connected to the connecting member 103, the first door panel 104 will also move with the movement of the connecting member 103. When the first swing arm 102 is in an unfolded position relative to the base 101, the electronic device is in an unfolded state; when the first swing arm 102 is in a folded position relative to the base 101, the electronic device is in a folded state. The first abutting surface 109 is arranged on the first swing arm 102 that is rotatably connected to the base 101 and slidably connected to the connecting member 103, so that it is convenient to adjust the flattening angle and it is also easy to design the adjusting member 108 thereon.

[0108] In some embodiments, when the first swing arm 102 is rigidly connected to the adjusting member 108, the first swing arm 102 and the adjusting member 108 may be connected in a direct contact manner or an indirect contact manner. When the first swing arm 102 and the adjusting member 108 are rigidly connected, the stability of the connection between the two can be ensured.

[0109] In some embodiments, the connecting member 103 has a sliding groove 115, the first swing arm 102 has a sliding wing 116, the sliding wing 116 is slidably set in the sliding groove 115, and the sliding wing 116 is limited in the sliding groove 115, so that the sliding wing 116 can only move along the guide direction of the sliding groove 115, and the sliding wing 116 will not fall out along the CC direction.

[0110] Fig.10 is a cross-sectional view of another partial structure of the rotating shaft mechanism 100 in the embodiment of the present application; see Fig. 9 and Fig.10 As shown, the first swing arm 102 has a first surface 117, and the first surface 117 is configured to be arranged opposite to the second abutting surface 110 when the first swing arm 102 is in the deployed position; the first abutting surface 109 can protrude from the first surface 117; when the first swing arm 102 is in the deployed position, the distance between the first surface 117 and the first abutting surface 109 can be changed during the movement of the adjusting member 108 in the first direction relative to the first swing arm 102, so that the first abutting surface 109 is protruded from the first surface 117 by utilizing the first abutting surface 109 to abut against the second abutting surface 110, and because the adjusting member 108 is rigidly connected to the first swing arm 102, when the adjusting member 108 moves relative to the first swing arm 102, the distance between the first surface 117 and the first abutting surface 109 is changed, and the distance between the first surface 117 and the second abutting surface 110 can be changed, thereby adjusting the flattening angle to meet the preset angle range.

[0111] In some embodiments, the first abutting surface 109 is a plane or a curved surface; the second abutting surface 110 is a plane or a curved surface. In this way, the shapes of the first abutting surface 109 and the second abutting surface 110 can be determined according to actual design requirements. The curved surface can be in the form of an arc surface or a spherical cap, etc. For example, see Fig.10 As shown, the first abutting surface 109 is a plane, and the second abutting surface 110 is a plane; the first surface 117 can also be in the form of a plane. The first abutting surface 109 and the second abutting surface 110 are both planes, which is convenient for processing the planes on the one hand, and on the other hand, the adjustment member 108 can be used to easily achieve the preset angle range of the flattening angle and ensure the adjustment accuracy.

[0112] It should be noted that, in some other possible embodiments, at least one of the first abutting surface 109 and the second abutting surface 110 may also be a curved surface; in addition, one of the first abutting surface 109 and the second abutting surface 110 may be in the form of a convex surface, and the other may be in the form of a concave surface matching the concave surface, that is, the convex surface extends into the concave surface, which can increase the contact area and reduce stress.

[0113] Please continue to see Fig. 9 and Fig.10 As shown, in some embodiments, the first swing arm 102 has an adjustment hole 118 extending along the first direction, the adjustment member 108 is a columnar structure, and at least part of the structure of the columnar structure is located in the adjustment hole 118; the first abutting surface 109 is an end surface of the columnar structure, so that the adjustment hole 118 is provided on the first swing arm 102, which is convenient for manufacturing and installation of the adjustment member 108; and the columnar adjustment member 108 can have a strong supporting force, which is convenient for achieving a flattening angle that meets the preset angle range and has a strong stability. The orifice of one end of the adjustment hole 118 is located on the first surface 117, and when the columnar structure moves along the first direction, the length of the columnar structure extending out of the first surface 117 can be adjusted, thereby achieving the first abutting surface 109 extending out of the first surface 117, thereby adjusting the size of the flattening angle formed between the first swing arm 102 and the base 101 when the first swing arm 102 is in the unfolded position. It should be noted that, in some cases, the first abutting surface 109 on the columnar structure may be flush with the first surface 117 , that is, the flattening angle satisfies the preset angle range.

[0114] Please continue to see Fig. 9 and Fig.10As shown, the adjustment hole 118 has an internal thread, and the columnar structure has an external thread that matches the internal thread, so that the rigid connection between the adjustment member 108 and the first swing arm 102 and the direct contact between the adjustment member 108 and the first swing arm 102 are achieved. The columnar structure can be completely located in the adjustment hole 118; in addition, after the adjustment member 108 and the first swing arm 102 are threadedly connected, the flattening angle can be accurately adjusted, and the rigid connection between the adjustment member 108 and the first swing arm 102 can be ensured. Moreover, when the adjustment member 108 adjusts the flattening angle to make the flattening angle within the preset angle range, when both are fixed by welding or other methods, it can also be ensured that the adjusted flattening angle is not easy to change. The pitch of the external thread and the internal thread can be set as needed to achieve the adjustment accuracy of the flattening angle, and the present application does not make any specific restrictions on the pitch. Exemplarily, the adjustment hole 118 can be in the form of a through hole, and the other end face opposite to the columnar structure has a cross slot or a slot, so that it is convenient to insert a screwdriver from the hole at the other end of the adjustment hole 118 to screw the columnar structure to adjust the length of the first abutment surface 109 of the columnar structure extending out of the first surface 117; of course, the other end face opposite to the columnar structure can also have another type of slot structure to facilitate screwing with a screwdriver. The material of the adjustment member 108 can be the same as that of the base 101, for example: the adjustment member 108 and the base 101 are both made of wear-resistant and hard metal material, and the metal material can be stainless steel or titanium.

[0115] In some embodiments, the adjusting member 108 is further configured to be fixedly connected to the first swing arm 102 after the flattening angle is within the preset angle range, so that after the flattening angle is adjusted by the adjusting member 108 to be within the preset angle range, the adjusting member 108 is fixedly connected to the first swing arm 102, so that during the use of the hinge mechanism 100, the adjusting member 108 will not be displaced from the first swing arm 102, thereby facilitating the flattening angle to be maintained within the preset angle range during the use of the hinge mechanism 100. During the assembly process of the hinge mechanism 100, after the flattening angle is adjusted by the adjusting member 108 and is within the preset angle range, the adjusting member 108 is fixedly connected to the first swing arm 102, thereby ensuring that the flattening angle is not easily changed during the daily use of the electronic device by the user, thereby ensuring the reliability of the electronic device.

[0116] Fig.11 is a cross-sectional view of another partial structure of the rotating shaft mechanism 100 in the embodiment of the present application; Fig. 9 , Fig.10 and Fig.11As shown, in some embodiments, the first swing arm 102 further has an injection hole 119, the injection hole 119 is connected to the adjustment hole 118, and the axial direction of the adjustment hole 118 and the axial direction of the injection hole 119 have an angle; the injection hole 119 is filled with a solid phase change material to fix the adjustment member 108 with the first swing arm 102, so that the fixed connection between the adjustment member 108 and the first swing arm 102 is facilitated by filling the phase change material. Exemplarily, the axial direction of the injection hole 119 is perpendicular to the axial direction of the adjustment hole 118, so that the liquid phase change material flows into the adjustment hole 118 through the injection hole 119, and the fixed connection between the adjustment member 108 and the first swing arm 102 is achieved.

[0117] In some embodiments, the phase change material is a glue or a solder, which can reduce the cost of fixing the adjustment member 108 and the first swing arm 102, and the fixing method is relatively convenient and easy to implement. The glue can be glue, for example, the glue can be 101 glue or 502 glue, and both 101 glue and 502 glue are cyanoacrylate glues. When solder is used for welding, the solder is heated to melt it, so that it also flows into the adjustment hole 118 after injection, and after cooling, the adjustment member 108 is fixedly connected to the first swing arm 102. The axis of the injection hole 119 and the axis of the adjustment hole 118 can be in the form of skew straight lines, so that when solder is used, the contact area between the solder and the adjustment member 108 can be increased, and the stability of the connection between the adjustment member 108 and the first swing arm 102 can be improved.

[0118] It should be noted that, in addition to using the injection hole 119 and the brazing material to achieve the welding fixation between the adjusting member 108 and the first swing arm 102, other methods can also be used to achieve the welding fixation between the adjusting member 108 and the first swing arm 102. Welding fixation can ensure the stability and rigid connection of the connection between the two, improve the stability of the overall structure formed by the adjusting member 108 and the first swing arm 102, and ensure that it is not easy to deform or loosen when subjected to external loads or impacts. In addition, due to the rigid connection, a better stress transfer is formed between the adjusting member 108 and the first swing arm 102, so that each component can better share the load, thereby extending the service life of the overall structure. Secondly, after the adjusting member 108 is used to adjust the flattening angle, the adjusting member 108 and the first swing arm 102 can be assembled together in one step by welding, without the need for additional connectors 103 or fasteners, which can not only reduce production costs, but also simplify the assembly process and improve production efficiency. Moreover, the relative position between the two can be ensured by welding, thereby ensuring accuracy. Finally, due to the strong connection of welding, the connection between the adjustment member 108 and the first swing arm 102 is not easy to be damaged, thereby reducing the need for daily maintenance and repair.

[0119] Fig.12is a schematic diagram of the structure of the adjusting member 108 in the embodiment of the present application; Fig.13 is a partial structural diagram of the first swing arm 102 in the embodiment of the present application. Fig.13 It is just to illustrate the structure of the adjustment hole 118 on the first swing arm 102; Fig.12 and Fig.13 As shown, in other embodiments, the columnar structure includes an inserting portion 120 and an abutting portion 121, and the inserting portion 120 is connected to the abutting portion 121; at least a portion of the inserting portion 120 is located in the adjusting hole 118, and the diameter of the abutting portion 121 is larger than the diameter of the inserting portion 120; the first abutting surface 109 is located on the abutting portion 121, so that the inserting portion 120 is inserted into the adjusting hole 118 to ensure the rigid connection between the adjusting member 108 and the first swing arm 102, and the diameter of the abutting portion 121 is larger than the diameter of the inserting portion 120, so that the first abutting surface 109 has a larger contact area; when the first abutting surface 109 contacts the second abutting surface 110, it helps to disperse the load and enhance the stability and reliability of the structure; this can also increase the service life of the adjustment member 108, and even if the abutting portion 121 is worn during long-term use, it will not affect the accuracy of the flattening angle; in addition, due to the existence of the abutting portion 121, the first abutting surface 109 can have a larger and appropriate area, which can reduce the occurrence of pits on the base 101 during the continuous contact between the first abutting surface 109 and the second abutting surface 110, thereby affecting the accuracy of the flattening angle. Exemplary, combined with Fig.12 and Fig.13 As shown, the adjustment hole 118 includes a first hole portion 122 and a second hole portion 123 connected to the first hole portion 122; the internal thread can be set on the first hole portion 122, the diameter of the first hole portion 122 is smaller than the diameter of the second hole portion 123, the insertion portion 120 can be threadedly connected with the first hole portion 122, and the second hole portion 123 is a light hole, and the thickness of the abutment portion 121 in the axial direction of the adjustment hole 118 can be no greater than the depth of the second hole portion 123, so that the adjustment hole 118 is in the form of a countersunk hole. The radial cross section of the abutment portion 121 can be circular or polygonal, and the radial cross section of the abutment portion 121 is perpendicular to the axial direction of the adjustment hole 118.

[0120] Fig.14 is another schematic diagram of the partial structure of the rotating shaft mechanism 100 in the embodiment of the present application, wherein: Fig.14 The cover plate 112 is not shown, and only one first swing arm 102 is shown; Fig.15 is a schematic diagram of the structure of the first swing arm 102 in the embodiment of the present application, Fig.16 is a structural schematic diagram of the first swing arm 102 from another perspective in the embodiment of the present application; Fig.14 , Fig.15 and Fig.16As shown, the first swing arm 102 has a sliding portion 124 and a rotating portion 125, the sliding portion 124 is fixedly connected to the rotating portion 125, for example, the sliding portion 124 and the rotating portion 125 are an integral structure; the adjusting member 108 is mounted on the sliding portion 124, and the first surface 117 is arranged on the sliding portion 124; the second abutting surface 110 is arranged on the middle beam 111, and the rotating portion 125 is rotatably connected to the middle beam 111; the sliding portion 124 is slidably connected to the connecting member 103; the sliding wing 116 is located on the sliding portion 124, and the sliding portion 124 is limited in the sliding groove 115 by the sliding wing 116, and the sliding portion 124 can move along the guiding direction of the sliding groove 115; the guiding direction of the sliding groove 115 can be parallel to the first direction, or it can be said that the guiding direction of the sliding groove 115 is parallel to the length direction of the sliding groove 115. By arranging the adjusting member 108 on the sliding portion 124 of the first swing arm 102 that is slidably connected to the base 101, it is convenient to realize the installation and adjustment of the adjusting member 108, that is, after the assembly of the rotating shaft mechanism 100 is completed, the position for adjusting the adjusting member 108 can be exposed to the outside, thereby facilitating the adjustment and fixing of the adjusting member 108. Exemplarily, the sliding portion 124 includes a main structure 126 and sliding wings 116 located on opposite sides of the main structure 126, the adjusting hole 118 and the injection hole 119 are opened on the main structure 126, and the main structure 126 has two opposite side surfaces in the first direction, one of which is the first surface 117 and the other side is the second surface 127, so that the orifices at both ends of the adjusting hole 118 are respectively located on the first surface 117 and the second surface 127, and when the adjusting member 108 is installed in the adjusting hole 118, the adjusting member 108 can be operated through the orifice of the adjusting hole 118 located on the second surface 127 to move it.

[0121] Combination Fig.14 , Fig.15 and Fig.16 As shown, the rotating portion 125 has a first arc surface 128 and a second arc surface 129 opposite to each other, so that the rotating portion 125 is in an arc shape. Fig. 9 As shown, the cover plate 112 has a third arc surface 130, and the middle beam 111 has a fourth arc surface 131 opposite to the third arc surface 130, so that an arc groove 132 is formed between the middle beam 111 and the cover plate 112; the first arc surface 128 cooperates with the third arc surface 130, and the second arc surface 129 cooperates with the fourth arc surface 131, so that the rotating part 125 is rotatably set in the arc groove 132; in this way, the arc-shaped rotating part 125 cooperates with the arc groove 132 to achieve a virtual axis rotation connection between the first swing arm 102 and the base 101, which is also conducive to setting the second abutting surface 110 on the base 101, setting the first surface 117 on the first swing arm 102, and facilitating the abutment between the first abutting surface 109 and the second abutting surface 110.

[0122] In some embodiments, there is an angle between the first direction and the rotation axis of the first swing arm 102 relative to the base 101; this is conducive to simplifying the design of the adjustment member 108 for adjusting the flattening angle, and can more conveniently achieve the adjustment of the flattening angle, and improve the adjustment accuracy. Exemplarily, the angle between the first direction and the rotation axis of the first swing arm 102 relative to the base 101 is a right angle; the first direction is also parallel to the length direction of the first swing arm 102, so that the adjustment member 108 can directly change the flattening angle when moving along the first direction, so that the accuracy of the flattening angle can be conveniently controlled to meet the preset angle range. It should be noted that the angle between the first direction and the rotation axis of the first swing arm 102 relative to the base 101 is a right angle, which can be exactly 90 degrees or approximately 90 degrees; of course, the angle between the first direction and the rotation axis of the first swing arm 102 relative to the base 101 can also be other degrees, for example, the angle is an acute angle.

[0123] In one or more embodiments, the present application also provides a design method for the hinge mechanism 100, which is applicable to the hinge mechanism 100 in any embodiment provided in the present application. The electronic device in the embodiment of the present application can also adopt the hinge mechanism 100 designed by the design method of the hinge mechanism 100.

[0124] The design method of the rotating shaft mechanism 100 in the embodiment of the present application includes:

[0125] An adjusting member 108 is installed on the first swing arm 102 rotatably connected to the base 101, and the adjusting member 108 is rigidly connected to the first swing arm 102, wherein the adjusting member 108 has a first abutting surface 109;

[0126] A second abutting surface 110 matched with the first abutting surface 109 is designed on the base 101, so that when the first swing arm 102 is in the unfolded position, the first abutting surface 109 abuts against the second abutting surface 110, wherein when the first swing arm 102 is in the unfolded position, the angle formed between the first swing arm 102 and the base 101 is a flattening angle;

[0127] When the first swing arm 102 is in the unfolded position, the adjusting member 108 is moved in a first direction relative to the first swing arm 102 so that the flattening angle is within a preset angle range;

[0128] After the flattening angle is within the preset angle range, the adjusting member 108 is fixedly connected to the first swing arm 102 .

[0129] The design method of the rotating shaft mechanism 100 of the embodiment of the present application can appropriately reduce the precision of the processing technology when designing the first swing arm 102 and the base 101, and the first swing arm 102 and the base 101 can be designed to be over-spread, that is, the flattening angle is greater than 180 degrees, so as to reduce the error requirement of the two when flattening. After being designed to be over-spread, the range of the flattening angle is greater than 180 degrees and not greater than 190 degrees, which is convenient for the adjustment of the adjustment member 108. After being designed to be over-spread, the specific value of the spread angle can be 184 degrees, 185 degrees or 186 degrees, etc. Of course, after over-expansion, the flattening angle can also be within a range; an adjusting member 108 is installed on the first swing arm 102, and the adjusting member 108 is rigidly connected to the first swing arm 102, so that the adjusting member 108 moves in the first direction of the first swing arm 102 to adjust the flattening angle between the first swing arm 102 and the base 101 when the first swing arm 102 is in the unfolded position, and the flattening angle meets the preset angle requirement; when the flattening angle meets the preset angle requirement, due to the first swing arm 10 2 is rigidly connected to the adjusting member 108, which ensures the stability of the first swing arm 102 in the unfolded position. Therefore, at the moment when the first abutting surface 109 abuts against the second abutting surface 110, the second abutting surface 110 applies force to the first abutting surface 109, and the force can be directly transmitted to the first swing arm 102. Since the first swing arm 102 is still rotatably connected to the base 101, it is not easy to vibrate at the moment when the first abutting surface 109 abuts against the second abutting surface 110, which is conducive to avoiding the short-term over-expansion. moment, thereby helping to ensure that the display screen on the electronic device will not be pulled or squeezed due to over-expansion, thereby ensuring the reliability of the electronic device; and after using the adjusting member 108 to adjust the flattening angle to within the preset angle range, the adjusting member 108 is fixedly connected to the first swing arm 102, so that during the use of the hinge mechanism 100, the adjusting member 108 will not be displaced from the first swing arm 102, thereby helping to ensure that during the use of the hinge mechanism 100, the flattening angle is maintained within the preset angle range.

[0130] In some embodiments, the first swing arm 102 is a swing arm that rotates with the base 101 to be slidably connected to the connecting member 103 of the rotating shaft mechanism 100, so that it is convenient to install the adjusting member 108 and to adjust the flattening angle using the adjusting member 108. Exemplarily, the adjusting member 108 is installed on the first swing arm 102 that is rotatably connected to the base 101, and the adjusting member 108 is rigidly connected to the first swing arm 102, including: opening an adjusting hole 118 with an internal thread on the first swing arm 102, so that the adjusting member 108 is in the form of a screw, and the adjusting member 108 is threadedly matched with the adjusting hole 118, so that the adjustment is made by screwing the adjusting member 108.

[0131] In some embodiments, the adjusting member 108 is fixedly connected to the first swing arm 102, including: welding or gluing the adjusting member 108 to the first swing arm 102; this can reduce the cost of fixing the adjusting member 108 to the first swing arm 102, and the fixing method is relatively convenient and easy to implement. Exemplarily, the gluing fixation can use glue, for example, the glue can be 101 glue or 502 glue, and both 101 glue and 502 glue are cyanoacrylate glues.

[0132] In the description of the specification of the present application, specific features, structures, materials or characteristics may be combined in an appropriate manner in any one or more embodiments or examples.

[0133] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A rotating shaft mechanism, characterized in that: include: Pedestal; a first swing arm, the first swing arm being rotatably connected to the base, and the first swing arm being rotatable relative to the base between an unfolded position and a folded position; When the first swing arm is in the unfolded position, the angle between the first swing arm and the base is a flattening angle; an adjusting member, the adjusting member being rigidly connected to the first swing arm, the adjusting member having a first abutting surface, the base having a second abutting surface, and the first abutting surface abutting against the second abutting surface when the first swing arm is in the unfolded position; Wherein, the adjusting member is configured to be able to move in a first direction relative to the first swing arm so that the flattening angle is within a preset angle range.

2. The rotating shaft mechanism according to claim 1, characterized in that: The first swing arm has a first surface, and the first surface is configured to be arranged opposite to the second abutment surface when the first swing arm is in the deployed position; The first abutting surface can be convex to the first surface; When the first swing arm is in the extended position, the distance between the first surface and the first abutting surface can be changed during the movement of the adjusting member in the first direction relative to the first swing arm.

3. The rotating shaft mechanism according to claim 1, characterized in that: An included angle is formed between the first direction and a rotation axis of the first swing arm relative to the base.

4. The rotating shaft mechanism according to claim 3, characterized in that: The angle between the first direction and the rotation axis of the first swing arm relative to the base is a right angle; the first direction is also parallel to the length direction of the first swing arm.

5. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The adjusting member is further configured to be fixedly connected to the first swing arm after the flattening angle is within the preset angle range.

6. The rotating shaft mechanism according to claim 5, characterized in that: The adjusting member is fixed to the first swing arm by welding.

7. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The first swing arm has an adjustment hole extending along a first direction, the adjustment member is a columnar structure, and at least a part of the columnar structure is located in the adjustment hole; The first abutting surface is an end surface of the columnar structure.

8. The rotating shaft mechanism according to claim 7, characterized in that: The adjusting hole has an internal thread, and the columnar structure has an external thread matching the internal thread.

9. The rotating shaft mechanism according to claim 7, characterized in that: The columnar structure includes an inserting portion and an abutting portion, wherein the inserting portion is connected to the abutting portion; At least a portion of the insertion portion is located in the adjustment hole, and a diameter of the abutment portion is larger than a diameter of the insertion portion; The first abutting surface is located on the abutting portion.

10. The rotating shaft mechanism according to claim 7, characterized in that: The first swing arm also has an injection hole, the injection hole is connected to the adjustment hole, and an angle is formed between the axial direction of the adjustment hole and the axial direction of the injection hole; The injection hole is filled with solid phase change material so that the adjusting member is fixedly connected to the first swing arm.

11. The rotating shaft mechanism according to claim 10, characterized in that: The phase change material is a glue material or a solder.

12. The rotating shaft mechanism according to claim 2, characterized in that: The first swing arm has a sliding portion and a rotating portion, and the sliding portion is fixedly connected to the rotating portion; The adjusting member is mounted on the sliding portion, and the first surface is disposed on the sliding portion; The base includes a middle beam, the second abutting surface is arranged on the middle beam, and the rotating part is rotatably connected to the middle beam; The rotating shaft mechanism further comprises a connecting member, and the sliding portion is slidably connected to the connecting member; Wherein, the connecting member has a sliding groove, the sliding portion is limited in the sliding groove, and the sliding portion can move along the guiding direction of the sliding groove.

13. The rotating shaft mechanism according to claim 12, characterized in that: The rotating part has a first arc surface and a second arc surface opposite to each other, so that the rotating part is in an arc shape; The base further includes a cover plate, which is fixedly connected to the middle beam; the cover plate has a third arc surface, and the middle beam has a fourth arc surface opposite to the third arc surface, so that an arc groove is formed between the middle beam and the cover plate; The first arc surface matches with the third arc surface, and the second arc surface matches with the fourth arc surface, so that the rotating part is rotatably disposed in the arc groove.

14. The rotating shaft mechanism according to any one of claims 1 to 4, characterized in that: The first abutting surface is a plane or a curved surface; the second abutting surface is a plane or a curved surface.

15. A method for designing a rotating shaft mechanism, characterized in that: The design approach includes: An adjusting member is installed on a first swing arm rotatably connected to the base, and the adjusting member is rigidly connected to the first swing arm, wherein the adjusting member has a first abutting surface; A second abutting surface matched with the first abutting surface is designed on the base, so that when the first swing arm is in the unfolded position, the first abutting surface abuts against the second abutting surface, wherein when the first swing arm is in the unfolded position, the angle formed between the first swing arm and the base is a flattening angle; When the first swing arm is in the unfolded position, the adjusting member is moved in a first direction relative to the first swing arm so that the flattening angle is within a preset angle range; After the flattening angle is within the preset angle range, the adjusting member is fixedly connected to the first swing arm.

16. The design method of the rotating shaft mechanism according to claim 15, characterized in that: The method of fixedly connecting the adjusting member to the first swing arm comprises: The adjusting member is fixed to the first swing arm by welding or gluing.

17. An electronic device, characterized in that: A device comprising a first sub-shell, a second sub-shell, and a rotating shaft mechanism according to any one of claims 1 to 14, or a rotating shaft mechanism designed by the design method of the rotating shaft mechanism according to claim 15 or 16; The first sub-shell and the second sub-shell are respectively connected to the rotating shaft mechanism, and the first sub-shell and the second sub-shell can rotate relative to each other through the rotating shaft mechanism.

18. The electronic device according to claim 17, characterized in that: The electronic device further includes a flexible display screen, and the first sub-shell and the second sub-shell are respectively fixedly connected to the flexible display screen.

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