Rotating shaft mechanism and foldable electronic equipment

Abstract

According to the rotating shaft mechanism and the foldable electronic equipment, the damping effect generated by the rotating shaft mechanism can be improved, and the requirement of a user for the opening and closing hand feeling of the foldable electronic equipment is met. The rotating shaft mechanism comprises a first support, a first pin shaft, a second pin shaft, a first cam sliding block, a second cam sliding block, a baffle, a first elastic piece, a first damping swing arm, a second damping swing arm and a flexible piece, and the first pin shaft and the second pin shaft are arranged on the first support in a spaced mode. The first cam sliding block is located between the second cam sliding block and the first support. The baffle is located on the side, away from the first cam sliding block, of the second cam sliding block. The first damping swing arm is meshed with the first cam sliding block and the second cam sliding block, and the first elastic piece is connected between the second cam sliding block and the baffle in an abutting mode. The first pin shaft or the second pin shaft is sleeved with the flexible part, and the length of the flexible part is smaller than that of the first elastic part.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular to a hinge mechanism and a foldable electronic device. Background Art

[0002] With the development of science and technology, the development of foldable electronic devices has become more and more mature, and users have higher and higher requirements for the opening and closing feel and hovering effect of foldable electronic devices. In the hinge mechanism of existing foldable electronic devices, the damping effect is usually generated by the meshing rotation of the cam and the cam slider under the pressure of the elastic member, so that the foldable electronic device can achieve the opening and closing feel. However, as foldable electronic devices become thinner and lighter, the size of the hinge mechanism is also getting smaller and smaller, which makes the force value of the elastic member limited, and it is impossible to further increase the damping force generated by the hinge mechanism, making it difficult to meet the user's demand for the opening and closing feel of the foldable electronic device. Summary of the Invention

[0003] The present application provides a hinge mechanism and a foldable electronic device, which can further enhance the damping effect produced by the hinge mechanism and meet the user's requirements for the opening and closing feel of the foldable electronic device.

[0004] In a first aspect, the present application provides a rotating shaft mechanism, comprising a first bracket, a first pin, a second pin, a first cam slider, a second cam slider, a baffle, a first elastic member, a first damping swing arm, a second damping swing arm and a flexible member, wherein the first pin and the second pin are both mounted on the first bracket, and the first pin and the second pin are spaced apart and arranged relative to each other along the width direction of the first bracket; the first cam slider, the second cam slider and the baffle are all sleeved on the first pin and the second pin, the first cam slider is located between the second cam slider and the first bracket, and is spaced apart from the second cam slider and the first bracket, the first cam slider includes a first hinged end facing the second cam slider, the second cam slider includes a second hinged end facing the first cam slider, and the baffle is located at the second The cam slider is away from the side of the first cam slider and is spaced apart from the second cam slider; the first damping swing arm and the first elastic member are both sleeved on the first pin shaft, and the first damping swing arm includes a third hinged end and a fourth hinged end, and the third hinged end and the fourth hinged end are arranged opposite to each other, the third hinged end is engaged with the first hinged end, and the fourth hinged end is engaged with the second hinged end, and the first elastic member abuts between the second cam slider and the baffle; the second damping swing arm is sleeved on the second pin shaft, and the second damping swing arm is spaced apart from the first damping swing arm along the width direction of the first bracket; the flexible member is sleeved on the first pin shaft or the second pin shaft, and abuts between the first cam slider and the first bracket, and the length of the flexible member is less than the length of the first elastic member.

[0005] In this embodiment, a flexible member is provided between the first bracket and the first cam slider, and the axial movement of the first cam slider is used to squeeze the flexible member, causing the flexible member to deform and generate an axial elastic force. The elastic feedback force of this axial elastic force acts on the first cam slider and is transmitted to the first damping swing arm and the second damping swing arm through the first cam slider, thereby increasing the axial force exerted on the first damping swing arm and the second damping swing arm. This, in turn, increases the damping torque generated during the rotation of the first damping swing arm and the second damping swing arm within a limited design space, helping the hinge mechanism to achieve a hovering function and further enhance the damping effect generated by the hinge mechanism, providing the user with a better damping feel. At the same time, this arrangement can also fully utilize the movement gap between the first bracket and the first cam slider, without occupying additional installation space for other components in the hinge mechanism, nor increasing the size of the hinge mechanism, thus meeting the design requirements of lightweight and thin foldable electronic devices.

[0006] In one possible embodiment, the hinge mechanism has a first state and a second state. When the hinge mechanism is in the first state, the length of the first elastic member is a first length, and the length of the flexible member is a second length. When the hinge mechanism is in the second state, the length of the first elastic member is a third length, and the length of the flexible member is a fourth length, wherein the third length is greater than the first length, and the fourth length is greater than the second length. In this embodiment, this arrangement ensures that the first elastic member and the flexible member are compressed and relaxed simultaneously during the rotation of the hinge mechanism.

[0007] In a possible embodiment, the elastic force direction of the flexible member is parallel to the elastic force direction of the first elastic member to ensure that the elastic forces generated by the flexible member and the first elastic member during deformation are in the same direction, thereby helping to ensure the rotational stability of the shaft mechanism during rotation.

[0008] In one possible embodiment, the flexible member includes a first abutting portion, a second abutting portion, and a connecting portion, wherein the first abutting portion, the second abutting portion, and the connecting portion are all sleeved on the first pin shaft or the second pin shaft, the first abutting portion abuts the first cam slider, the second abutting portion abuts the first bracket, and the connecting portion is connected between the first abutting portion and the second abutting portion. In this embodiment, the first abutting portion and the second abutting portion are not easily deformed. When the flexible member is squeezed, the first abutting portion and the second abutting portion squeeze the connecting portion, causing the connecting portion to be axially squeezed and deformed and generate elastic force.

[0009] In one possible embodiment, the connecting portion includes a plurality of connecting beams, which are spaced apart and arranged around the first or second pin. With this arrangement, when the connecting portion is squeezed by the first and second abutting portions, the gaps between adjacent connecting beams provide space for each connecting beam to deform. Deformation of the connecting beams causes the flexible member to generate elastic force and elastic feedback force, thereby providing damping force for the rotation of the first or second damping swing arm.

[0010] In one possible embodiment, each of the connecting beams is inclined relative to the first and second abutment portions. In this embodiment, by angling the connecting beams, the effective length of the connecting beams can be increased, thereby reducing the stiffness of the connecting beams. Deformation of the connecting beams enables the flexible member to generate a greater elastic force and elastic feedback force, thereby providing a greater damping force for the first or second damping swing arm. This, in turn, helps increase the rotating shaft torque of the hinge mechanism, allowing users to experience a better damping feel when using the foldable electronic device.

[0011] In one possible embodiment, the first abutment portion includes a plurality of first sub-abutment portions, the plurality of first sub-abutment portions are spaced apart around the first pin shaft or the second pin shaft, and each of the first sub-abutment portions abuts the first cam slider; the second abutment portion includes a plurality of second sub-abutment portions, the plurality of second sub-abutment portions are spaced apart around the first pin shaft or the second pin shaft, and each of the second sub-abutment portions abuts the first bracket; and each of the connecting beams is connected between two adjacent first sub-abutment portions and two adjacent second sub-abutment portions. Under this arrangement, when the flexible member is squeezed, the gap between the two adjacent first sub-abutment portions, the gap between the two adjacent second sub-abutment portions, and the gap between the two adjacent connecting beams can provide deformation space for the flexible member, so as to increase the elastic force and elastic feedback force output by the flexible member, thereby providing a greater damping force for the rotation of the first damping swing arm and the second damping swing arm.

[0012] In one possible embodiment, each of the connecting beams includes a first sub-beam and a second sub-beam, wherein the first sub-beam is connected between two adjacent first sub-abutment portions, and the second sub-beam is in contact with the first sub-beam and connected between two adjacent second sub-abutment portions. Exemplarily, the first sub-beam and the second sub-beam are integrally formed to facilitate processing of the connecting beam. In some other embodiments, the first sub-beam and the first sub-abutment portion are integrally formed, and the second sub-beam and the second sub-abutment portion are integrally formed, and the end face of the second sub-beam facing away from the second sub-abutment portion abuts against the end face of the first sub-beam facing away from the first abutment portion, so as to reduce the difficulty of producing and processing the connecting beam and facilitate the processing and manufacture of flexible parts.

[0013] In one possible embodiment, the hinge mechanism further includes a second elastic member, which is sleeved over the second pin and abuts between the second cam slider and the baffle. The second elastic member is spaced apart from the first elastic member along the width of the first bracket, and the length of the second elastic member is greater than that of the flexible member. This arrangement ensures balanced force on the second cam slider, preventing it from tilting during movement.

[0014] In one possible embodiment, the rotating shaft mechanism further includes a third pin and a third elastic member. The third pin is installed between the first cam slider and the baffle, and is located between the first pin and the second pin. The third elastic member is sleeved on the third pin, and is located between the first elastic member and the second elastic member, and abuts between the second cam slider and the baffle. In this embodiment, by providing the third pin between the second cam slider and the baffle, and sleeved on the third elastic member, the third elastic member can always move along the length direction of the third pin without tilting during movement, thereby ensuring the movement stability of the third elastic member and preventing the third elastic member from interfering with the movement of the first and second elastic members.

[0015] In one possible embodiment, there are two flexible members, including a first flexible member and a second flexible member. The first flexible member is sleeved on the first pin shaft, and the second flexible member is sleeved on the second pin shaft. Along the width direction of the first bracket, the second flexible member and the first flexible member are spaced apart. Under this arrangement, the force on the first cam slider can be balanced, preventing the first cam slider from tilting during movement. Exemplarily, the first flexible member and the second flexible member can be made of amorphous metal materials or stainless steel materials, etc.

[0016] In one possible embodiment, the rotating shaft mechanism further includes a first gear and a second gear, both of which are located between the first damping swing arm and the second damping swing arm. The first gear is meshed with the third hinged end, and the second gear is meshed with both the first gear and the second damping swing arm. In this embodiment, when the first damping swing arm rotates, the third hinged end drives the first gear to rotate, thereby driving the second gear to rotate, and causing the second damping swing arm to rotate, thereby achieving synchronous rotation of the first and second damping swing arms.

[0017] In the second aspect, the present application also provides a foldable electronic device, comprising a first shell, a second shell, a display screen and the above-mentioned hinge mechanism, wherein the hinge mechanism is connected between the first shell and the second shell. In one possible implementation, the foldable electronic device further comprises a display screen, wherein the display screen comprises a first part, a second part and a foldable part, and the foldable part is located between the first part and the second part. The first part is mounted on the first shell, the second part is mounted on the second shell, and the hinge mechanism is arranged opposite to the foldable part. The first shell and the second shell can be relatively rotated by the hinge mechanism, so that the foldable electronic device can switch between a folded state and a flattened state. In this embodiment, by applying the above-mentioned hinge mechanism to the foldable electronic device, the opening and closing feel of the foldable electronic device can be improved, meeting the user's demand for the opening and closing feel of the foldable electronic device. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the background technology, the drawings required for use in the embodiments of the present application or the background technology will be described below.

[0019] Figure 1 is a schematic structural diagram of a foldable electronic device in a folded state provided by an embodiment of the present application;

[0020] Figure 2 is a schematic structural diagram of a foldable electronic device in a hovering state provided by an embodiment of the present application;

[0021] Figure 3 is a schematic structural diagram of a foldable electronic device in a flattened state provided by an embodiment of the present application;

[0022] Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the foldable electronic device shown;

[0023] Figure 5 yes Figure 4 A schematic diagram of a portion of the structure of the hinge mechanism in the foldable electronic device shown;

[0024] Figure 6 yes Figure 5 A schematic structural diagram of the rotating shaft mechanism shown at another angle;

[0025] Figure 7 yes Figure 5 The structure diagram of the damping assembly in the rotating shaft mechanism shown in the first embodiment;

[0026] Figure 8 yes Figure 7 A schematic structural diagram of the damping assembly shown at another angle;

[0027] Figure 9 yes Figure 7 Schematic diagram of the exploded structure of the damping assembly shown;

[0028] Figure 10 yes Figure 9 A schematic structural diagram of the first damping swing arm and the second damping swing arm in the damping assembly shown;

[0029] Figure 11 yes Figure 9 A schematic structural diagram of the first damping member in the damping assembly shown;

[0030] Figure 12 yes Figure 11 A schematic diagram of the planar structure of the flexible member in the first damping member is shown;

[0031] Figure 13 yes Figure 11 A schematic structural diagram of the flexible member in the first damping member at another angle;

[0032] Figure 14 yes Figure 9 A schematic structural diagram of the second damping member in the damping assembly shown;

[0033] Figure 15 yes Figure 5 A schematic diagram of a portion of the structure of the rotating shaft mechanism shown in the first intermediate state;

[0034] Figure 16 yes Figure 5 A schematic diagram of a portion of the structure of the rotating shaft mechanism shown in a folded state;

[0035] Figure 17 yes Figure 5 The structure diagram of the damping assembly in the rotating shaft mechanism shown in the second embodiment;

[0036] Figure 18 yes Figure 17 A schematic structural diagram of the flexible member of the first damping member in the damping assembly shown;

[0037] Figure 19 yes Figure 5 A schematic structural diagram of a damping assembly in a rotating shaft mechanism in a third embodiment;

[0038] Figure 20 yes Figure 19 A schematic structural diagram of the flexible member of the first damping member in the damping assembly shown;

[0039] Figure 21 This is a schematic diagram of deformation simulation of the flexible member shown in the first embodiment of the present application;

[0040] Figure 22is a force-displacement curve diagram of the flexible member during deformation shown in the first embodiment of the present application;

[0041] Figure 23 2 is a schematic diagram of deformation simulation of the flexible member shown in the second embodiment of the present application;

[0042] Figure 24 This is a force-displacement curve diagram of the flexible member during deformation shown in the second embodiment of the present application. DETAILED DESCRIPTION

[0043] The embodiments of the present application are described below in conjunction with the drawings in the embodiments of the present application.

[0044] See also Figures 1 to 3 , Figure 1 is a structural diagram of a foldable electronic device 1000 provided in an embodiment of the present application in a folded state. Figure 2 1 is a schematic structural diagram of a foldable electronic device 1000 in a hovering state provided by an embodiment of the present application. Figure 3 1 is a schematic structural diagram of the foldable electronic device 1000 provided in an embodiment of the present application in a flattened state.

[0045] For ease of description, the width direction of the foldable electronic device 1000 is defined as the X-axis direction, the length direction of the foldable electronic device 1000 is defined as the Y-axis direction, and the thickness direction of the foldable electronic device 1000 is defined as the Z-axis direction. The X-axis direction, the Y-axis direction, and the Z-axis direction are perpendicular to each other.

[0046] The foldable electronic device 1000 includes, but is not limited to, a cell phone, a notebook computer, a tablet personal computer, a laptop computer, a personal digital assistant, a wearable device, or a mobile device. In the embodiment of the present application, the foldable electronic device 1000 is described as a cell phone.

[0047] In this embodiment, when the foldable electronic device 1000 is in a hovering state, the unfolding angle α of the foldable electronic device 1000 is 90 degrees. When the foldable electronic device 1000 is in a flattened state, the unfolding angle β of the foldable electronic device 1000 is 180 degrees. It should be noted that the angles illustrated in the embodiments of this application are all allowed to have slight deviations. For example, Figure 2The unfolding angle α of the foldable electronic device 1000 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 1000 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. The angles described below as examples can be understood in the same way.

[0048] The foldable electronic device 1000 shown in the embodiment of the present application is an electronic device that can be folded once. In other embodiments, the foldable electronic device 1000 can also be an electronic device that can be folded multiple times (more than twice). In this case, the foldable electronic device 1000 can include multiple parts, where two adjacent parts can be folded relatively close together until the foldable electronic device 1000 is in a folded state, and two adjacent parts can be unfolded relatively far apart until the foldable electronic device 1000 is in a flat state.

[0049] See also Figure 4 , Figure 4 yes Figure 3 A schematic diagram of the exploded structure of the foldable electronic device 1000 is shown.

[0050] The foldable electronic device 1000 includes a folding device 500 and a display screen 400, and the display screen 400 is mounted on the folding device 500. The display screen 400 includes a display surface 400a and a mounting surface 400b. Along the thickness direction of the display screen 400, the display surface 400a and the mounting surface 400b are arranged opposite to each other. The display surface 400a is used to display text, images, videos, etc. The display screen 400 also includes a first portion 410, a second portion 420 and a foldable portion 430, and the foldable portion 430 is located between the first portion 410 and the second portion 420. The foldable portion 430 can be bent along the X-axis direction. In this embodiment, the display screen 400 is a flexible display screen 400. For example, the display screen 400 may be an organic light-emitting diode (OLED) display screen 400, an active-matrix organic light-emitting diode (AMOLED) display screen 400, a mini organic light-emitting diode (MID) display screen 400, a micro organic light-emitting diode (MID) display screen 400, a micro organic light-emitting diode (MID) display screen 400, or a quantum dot light-emitting diode (QLED) display screen 400, etc.

[0051] In this embodiment, the folding device 500 is fixedly connected to the mounting surface 400b of the display screen 400. The folding device 500 includes a first housing 510, a second housing 520, and a hinge mechanism 530. Along the X-axis, the first housing 510 and the second housing 520 are mounted on opposite sides of the hinge mechanism 530, and both are rotatable relative to the hinge mechanism 530. Specifically, the first housing 510 supports the first portion 410 of the display screen 400, and the second housing 520 supports the second portion 420 of the display screen 400. In other words, the first portion 410 of the display screen 400 is mounted to the first housing 510, and the second portion 420 of the display screen 400 is mounted to the second housing 520. The hinge mechanism 530 is disposed opposite the foldable portion 430 of the display screen 400. The first housing 510 and the second housing 520 can rotate relative to each other via the hinge mechanism 530, allowing the folding device 500 to switch between a folded state and a flattened state.

[0052] Please also refer to Figure 1When the first shell 510 and the second shell 520 rotate relative to each other via the hinge mechanism 530 and the first shell 510 and the second shell 520 are relatively close to each other, the display screen 400 is folded under the influence of the first shell 510 and the second shell 520, thereby folding the foldable electronic device 1000. When the foldable electronic device 1000 is in the folded state, the foldable portion 430 of the display screen 400 is bent, and the first portion 410 and the second portion 420 of the display screen 400 are arranged relative to each other. At this time, the display screen 400 is located between the first shell 510 and the second shell 520, which can greatly reduce the probability of damage to the display screen 400 and effectively protect the display screen 400.

[0053] Please also refer to Figure 2 and Figure 4 . When the first shell 510 and the second shell 520 rotate relative to each other through the hinge mechanism 530, and the first shell 510 and the second shell 520 are relatively far away from each other, the display screen 400 is unfolded under the drive of the first shell 510 and the second shell 520, so that the foldable electronic device 1000 is unfolded to a hovering state. When the foldable electronic device 1000 is in the hovering state, the first shell 510 and the second shell 520 are unfolded to an angle of α. The first part 410 and the second part 420 of the display screen 400 are relatively unfolded, and drive the foldable part 430 to unfold. At this time, the angle between the first part 410 and the second part 420 is α. Exemplarily, α can be 90 degrees. In some other embodiments, α can also be approximately 90 degrees, or 80 degrees, 85 degrees, 95 degrees or 100 degrees, etc.

[0054] Please also refer to Figure 3 and Figure 4 In this embodiment, when the first housing 510 and the second housing 520 rotate relative to each other via the hinge mechanism 530 and the first housing 510 and the second housing 520 move away from each other, the display screen 400, driven by the first housing 510 and the second housing 520, further unfolds until the foldable electronic device 1000 is flattened. When the folding device 500 is in the flattened state, the angle between the first housing 510 and the second housing 520 is β. The foldable portion 430 of the display screen 400 unfolds, and the first portion 410 and the second portion 420 unfold relative to each other. At this point, the angles between the first portion 410, the second portion 420, and the foldable portion 430 are all β. The display screen 400 has a large display area, enabling a large-screen display for the foldable electronic device 1000 and improving the user experience. For example, β is 180 degrees. In other embodiments, β may also be approximately 180 degrees, such as 170 degrees, 175 degrees, 185 degrees, or 190 degrees.

[0055] It should be noted that angles α and β are both the angles between the first housing 510 and the second housing 520. These angles are used to distinguish the angles between the first housing 510 and the second housing 520 in different states of the foldable electronic device 1000. Angle α refers to the angle between the first housing 510 and the second housing 520 when the foldable electronic device 1000 is in the hovering state, while angle β refers to the angle between the first housing 510 and the second housing 520 when the foldable electronic device 1000 is in the flattened state.

[0056] Please refer to Figure 5 and Figure 6 , Figure 5 yes Figure 4 The schematic diagram of a part of the structure of the rotating shaft mechanism 530 in the foldable electronic device 1000 is shown. Figure 6 yes Figure 5 The structure diagram of the rotating shaft mechanism 530 shown is shown at another angle.

[0057] The hinge mechanism 530 includes a fixing base 200 and a damping assembly 100, and the damping assembly 100 is installed inside the fixing base 200. During the rotation of the foldable electronic device 1000, the damping assembly 100 can provide a damping force so that the user can experience a better damping feel, while enabling the foldable electronic device 1000 to hover at a preset angle, thereby improving the user's experience. It should be noted that the preset angle refers to the angle between the first shell 510 and the second shell 520 when the foldable electronic device 1000 is hovering. The preset angle ranges from 0° to 180°.

[0058] In this embodiment, there are four damping assemblies 100. The four damping assemblies 100 are arranged in sequence along the negative direction of the Y axis. The structures of the four damping assemblies 100 are the same, and the structure of one damping assembly 100 will be described below as an example.

[0059] Please also refer to Figures 7 to 9 , Figure 7 yes Figure 5 The structure diagram of the damping assembly 100 in the rotating shaft mechanism 530 in the first embodiment is shown. Figure 8 yes Figure 7 The structural diagram of the damping assembly 100 shown in FIG. Figure 9 yes Figure 7 A schematic diagram of the exploded structure of the damping assembly 100 is shown.

[0060] The damping assembly 100 includes a first damping swing arm 110, a second damping swing arm 120, a gear member 130, a first damping member 140, a second damping member 150, a first pin 101, a second pin 102, a first bracket 103, and a second bracket 104. The first bracket 103 and the second bracket 104 are both fixedly mounted within the fixing base 200. Along the Y-axis, the first bracket 103 and the second bracket 104 are spaced apart and disposed opposite each other. The first pin 101 and the second pin 102 are both fixedly connected between the first bracket 103 and the second bracket 104. Along the width direction of the first bracket 103 (the X-axis direction in the figure), the first pin 101 and the second pin 102 are spaced apart. The first damping swing arm 110, the second damping swing arm 120, the gear member 130, the first damping member 140, and the second damping member 150 are all located between the first bracket 103 and the second bracket 104. The first damping swing arm 110 is mounted on the first pin 101 and is rotatable relative to the first pin 101 along the Y-axis. The second damping swing arm 120 is mounted on the second pin 102 and is rotatable relative to the second pin 102 along the Y-axis. Along the X-axis, the first damping swing arm 110 and the second damping swing arm 120 are spaced apart and arranged opposite each other. Along the Y-axis, the first damping swing arm 110 and the second damping swing arm 120 are spaced apart from the first bracket 103 and the second bracket 104. The gear member 130 is mounted between the first damping swing arm 110 and the second damping swing arm 120 and is meshedly connected to both the first damping swing arm 110 and the second damping swing arm 120. The first damping member 140 and the second damping member 150 are both mounted on the first pin 101 and the second pin 102 and are rotatable relative to the first pin 101 and the second pin 102 along the Y-axis. Along the X-axis, the first damping member 140 and the second damping member 150 are located on opposite sides of the first damping swing arm 110 and the second damping swing arm 120, respectively. The first damping member 140 is located between the gear member 130 and the first bracket 103 and is hingedly connected to both the first damping swing arm 110 and the second damping swing arm 120. The second damping member 150 is located between the gear member 130 and the second bracket 104 and is hingedly connected to both the first damping swing arm 110 and the second damping swing arm 120.

[0061] In this embodiment, the gear member 130 includes a gear fixing sleeve 131 and a synchronous gear 132. The synchronous gear 132 is mounted on the gear fixing sleeve 131 and is rotatably connected to the first damping member 140. Along the X-axis, the gear fixing sleeve 131 is located between the first damping swing arm 110 and the second damping swing arm 120. The gear fixing sleeve 131 includes a fixing portion 1311, a first assembly portion 1312, and a second assembly portion 1313. Both the first assembly portion 1312 and the second assembly portion 1313 are fixedly connected to the fixing portion 1311. Along the X-axis, the first assembly portion 1312 and the second assembly portion 1313 are spaced apart on opposite sides of the fixing portion 1311. Specifically, the first assembly portion 1312 is sleeved onto the first pin 101, and the second assembly portion 1313 is sleeved onto the second pin 102.

[0062] In this embodiment, there are two synchronous gears 132. Both synchronous gears 132 are mounted on the fixed portion 1311 and can rotate relative to the fixed portion 1311 around the Y-axis direction. The two synchronous gears 132 are divided into a first gear 132a and a second gear 132b. Along the X-axis direction, the first gear 132a and the second gear 132b are arranged side by side and are both located between the first damping swing arm 110 and the second damping swing arm 120. The first gear 132a is meshed with the second gear 132b. When the first gear 132a rotates, the second gear 132b can rotate driven by the first gear 132a. Among them, the rotation directions of the first gear 132a and the second gear 132b are opposite.

[0063] Please also refer to Figure 10 , Figure 10 yes Figure 9 Schematic diagram of the structure of the first damping swing arm 110 and the second damping swing arm 120 in the damping assembly 100.

[0064] In this embodiment, the first damping swing arm 110 includes a first damping oscillating body 111, a first damping shaft seat 112, a third damping shaft seat 113, a third hinged end 114, and a fourth hinged end 115. The first damping shaft seat 112 and the third damping shaft seat 113 are both fixedly connected to one end of the first damping oscillating body 111. Along the Y-axis, the first damping shaft seat 112 and the third damping shaft seat 113 are spaced apart and arranged side by side. A first receiving notch 1101 is formed between the first damping shaft seat 112 and the third damping shaft seat 113. The first receiving notch 1101 can be used to accommodate the first assembly portion 1312 of the gear fixing sleeve 131. The first damping shaft seat 112 is defined by a first rotation hole 1121, which passes through the first damping shaft seat 112 along the Y-axis and communicates with the first receiving notch 1101. The wall profile of the first rotation hole 1121 is consistent with the outer profile of the first pin 101. A second rotation hole 1131 is defined within the third damping shaft seat 113. The second rotation hole 1131 extends through the third damping shaft seat 113 along the Y-axis and communicates with the first receiving notch 1101. The wall profile of the second rotation hole 1131 coincides with the outer profile of the first pin 101. In this embodiment, the first rotation hole 1121 allows the first pin 101 to pass through the first damping shaft seat 112, while the second rotation hole 1131 allows the first pin 101 to pass through the third damping shaft seat 113, thereby enabling the first damping swing arm 110 to be sleeved onto the first pin 101.

[0065] The third hinged end portion 114 is fixedly connected to the first damping shaft seat 112 and is arranged around the outer circumference of the first rotating hole 1121. The third hinged end portion 114 includes a plurality of third protrusions 1141 and a plurality of third recesses 1142, and the plurality of third protrusions 1141 and the plurality of third recesses 1142 are alternately distributed around the circumference of the first rotating hole 1121. In the Y-axis direction, the plurality of third protrusions 1141 and the plurality of third recesses 1142 are all arranged away from the first receiving notch 1101. In addition, a first meshing tooth 1143 is also protruded from the circumference of the third hinged end portion 114, and the first meshing tooth 1143 is meshedly connected to the first gear 132a of the gear member 130, so that the third hinged end portion 114 can be meshedly connected to the first gear 132a.

[0066] The fourth hinged end portion 115 is fixedly connected to the third damping shaft seat 113 and is disposed around the outer periphery of the second rotation hole 1131. Along the Y-axis, the fourth hinged end portion 115 is disposed opposite the third hinged end portion 114. The fourth hinged end portion 115 includes a plurality of fourth protrusions 1151 and a plurality of fourth recesses 1152, which are alternately arranged around the periphery of the second rotation hole 1131. Along the Y-axis, the plurality of fourth protrusions 1151 and the plurality of fourth recesses 1152 are disposed away from the first receiving notch 1101.

[0067] Specifically, the first damping shaft seat 112 and the third damping shaft seat 113 are both sleeved on the outer circumference of the first pin 101 and are rotatably connected to the first pin 101. The first receiving notch 1101 accommodates the first assembly portion 1312 of the gear fixing sleeve 131. The first meshing teeth 1143 of the third hinged end portion 114 are engaged with the first gear 132a. The multiple third protrusions 1141 and the multiple third recesses 1142 of the third hinged end portion 114 are both arranged toward the first bracket 103. The multiple fourth protrusions 1151 and the multiple fourth recesses 1152 of the fourth hinged end portion 115 are both arranged away from the first bracket 103.

[0068] In this embodiment, the second damping swing arm 120 and the first damping swing arm 110 are symmetrical structures. The second damping swing arm 120 includes a second damping swing body 121, a second damping shaft seat 122, a fourth damping shaft seat 123, a seventh hinged end 124, and an eighth hinged end 125. The second damping shaft seat 122 and the fourth damping shaft seat 123 are both fixedly connected to one end of the second damping swing body 121. Along the Y-axis direction, the second damping shaft seat 122 and the fourth damping shaft seat 123 are spaced apart and arranged side by side. A second receiving notch 1201 is formed between the second damping shaft seat 122 and the fourth damping shaft seat 123. The second receiving notch 1201 can be used to accommodate the second assembly portion 1313 of the gear fixing sleeve 131.

[0069] The second damping shaft seat 122 is provided with a third rotation hole 1221, which passes through the second damping shaft seat 122 along the Y-axis direction and is connected to the second receiving notch 1201. The hole wall profile of the third rotation hole 1221 is consistent with the outer profile of the second pin 102. The fourth damping shaft seat 123 is provided with a fourth rotation hole 1231, which passes through the fourth damping shaft seat 123 along the Y-axis direction and is connected to the second receiving notch 1201. The hole wall profile of the fourth rotation hole 1231 is consistent with the outer profile of the second pin 102. In this embodiment, the third rotation hole 1221 is used to allow the second pin 102 to pass through the second damping shaft seat 122, and the fourth rotation hole 1231 is used to allow the second pin 102 to pass through the fourth damping shaft seat 123, so that the second damping swing arm 120 can be sleeved on the second pin 102.

[0070] The seventh hinged end portion 124 is fixedly connected to the second damping shaft seat 122 and is arranged around the outer circumference of the third rotating hole 1221. The seventh hinged end portion 124 includes a plurality of seventh protrusions 1241 and a plurality of seventh recesses 1242, and the plurality of seventh protrusions 1241 and the plurality of seventh recesses 1242 are alternately distributed around the circumference of the third rotating hole 1221. In the Y-axis direction, the plurality of seventh protrusions 1241 and the plurality of seventh recesses 1242 are all arranged away from the second receiving notch 1201. In addition, a second meshing tooth 1243 is further provided on the outer circumference of the seventh hinged end portion 124. The second meshing tooth 1243 is meshedly connected with the second gear 132b of the gear member 130, so that the seventh hinged end portion 124 can be meshedly connected with the second gear 132b.

[0071] The eighth hinged end portion 125 is fixedly connected to the fourth damping shaft seat 123 and is disposed around the outer periphery of the fourth rotation hole 1231. Along the Y-axis, the eighth hinged end portion 125 is disposed opposite the seventh hinged end portion 124. The eighth hinged end portion 125 includes a plurality of eighth protrusions 1251 and a plurality of eighth recesses 1252, which are alternately arranged around the periphery of the fourth rotation hole 1231. Along the Y-axis, the plurality of eighth protrusions 1251 and the plurality of eighth recesses 1252 are disposed away from the second receiving notch 1201.

[0072] Specifically, the second damping shaft seat 122 and the fourth damping shaft seat 123 are both sleeved on the outer circumference of the second pin 102 and are rotatably connected to the second pin 102. The second receiving notch 1201 accommodates the second assembly portion 1313 of the gear fixing sleeve 131. The second meshing teeth 1243 of the seventh hinged end portion 124 are engaged with the second gear 132b. The multiple seventh protrusions 1241 and the multiple seventh recesses 1242 of the seventh hinged end portion 124 are both arranged toward the first bracket 103. The eighth protrusion 1251 and the eighth recess 1252 of the eighth hinged end portion 125 are both arranged away from the first bracket 103.

[0073] Please combine Figure 7 、 Figure 8 and see Figure 11 , Figure 11 yes Figure 9 FIG. 1 is a schematic structural diagram of the first damping member 140 in the damping assembly 100 .

[0074] The first damping member 140 includes a first cam slider 20 and a flexible member 10. The first cam slider 20 is sleeved around the first and second pins 101, 102. Along the Y-axis, the first cam slider 20 can slide relative to the first and second pins 101, 102. The first cam slider 20 is positioned between the first and second damping swing arms 110, 120, and the first bracket 103, and is spaced apart from the first bracket 103. This arrangement provides a clearance between the first cam slider 20 and the first bracket 103, preventing the first bracket 103 from obstructing the axial movement of the first cam slider 20.

[0075] The first cam slider 20 includes a first surface 201 and a third surface 202. Along the thickness direction of the first cam slider 20 (the Y-axis in the figure), the first surface 201 and the third surface 202 are arranged opposite each other. The first surface 201 faces the first bracket 103, while the third surface 202 faces away from the first bracket 103. Furthermore, the first bracket 103 includes a second surface 103a facing the first cam slider 20. Exemplarily, along the Y-axis, the distance s between the first surface 201 of the first cam slider 20 and the second surface 103a of the first bracket 103 is less than or equal to 1 mm.

[0076] The first cam slider 20 also includes a first body 21, a first hinged end 22 and a fifth hinged end 23. Exemplarily, the first body 21 is a roughly rectangular plate-shaped structure. The first body 21 is provided with a third mounting hole 211 and a fourth mounting hole 212. The third mounting hole 211 and the fourth mounting hole 212 both penetrate the first body 21 along the thickness direction of the first body 21 (the Y-axis direction in the figure). Along the length direction of the first body 21 (the X-axis direction in the figure), the third mounting hole 211 and the fourth mounting hole 212 are spaced apart. In this embodiment, the third mounting hole 211 is used to mount the first gear 132a so that the first gear 132a can rotate relative to the first body 21 of the first cam slider 20. The fourth mounting hole 212 is used to mount the second gear 132b so that the second gear 132b can rotate relative to the first body 21 of the first cam slider 20.

[0077] The first hinged end 22 and the fifth hinged end 23 are both fixedly connected to opposite ends of the first body 21 in the longitudinal direction (the X-axis direction in the figure), and both extend in a direction away from the first body 21 and are both arranged toward the second damping member 150. The first hinged end 22 is engaged with the third hinged end 114 of the first damping swing arm 110. The first hinged end 22 is provided with a first mounting hole 223, which passes through the first hinged end 114 along the thickness direction of the first hinged end 22 (the Y-axis direction in the figure). The hole wall profile of the first mounting hole 223 is consistent with the outer profile of the first pin 101, so that the first pin 101 can pass through the first hinged end 22 of the first cam slider 20, thereby enabling the first cam slider 20 to be sleeved on the first pin 101.

[0078] The first hinged end portion 22 also includes a plurality of first protrusions 221 and a plurality of first recesses 222, which are alternately distributed around the circumference of the first mounting hole 223. The shape of each first protrusion 221 matches the shape of a third recess 1142 of the third hinged end portion 114. In other words, each first protrusion 221 can be precisely retained within a third recess 1142. The shape of each first recess 222 matches the shape of a third protrusion 1141 of the third hinged end portion 114. In other words, each first recess 222 can precisely accommodate a third protrusion 1141.

[0079] The fifth hinged end 23 engages with the seventh hinged end 124 of the second damping swing arm 120. A second mounting hole 233 is defined in the fifth hinged end 23. The second mounting hole 233 extends through the fifth hinged end 23 along its thickness (the Y-axis direction in the figure). The wall profile of the second mounting hole 233 coincides with the outer profile of the second pin 102, facilitating the second pin 102's insertion through the fifth hinged end 23 of the first cam slider 20, thereby enabling the first cam slider 20 to be sleeved onto the second pin 102.

[0080] The fifth hinged end portion 23 also includes a plurality of fifth protrusions 231 and a plurality of fifth recesses 232, which are alternately distributed around the circumference of the fourth mounting hole 216. The shape of each fifth protrusion 231 matches the shape of the seventh recess 1242 of the seventh hinged end portion 124. In other words, each fifth protrusion 231 can be precisely retained within one of the seventh recesses 1242. The shape of each fifth recess 232 matches the shape of one of the seventh protrusions 1241 of the seventh hinged end portion 124. In other words, each fifth recess 232 can precisely accommodate one of the seventh protrusions 1241.

[0081] Please refer to Figure 7 and Figure 12 , Figure 12 yes Figure 11 A schematic planar structural diagram of the flexible member 10 in the first damping member 140 is shown.

[0082] The flexible member 10 is sleeved on the first pin 101 or the second pin 102 and abuts between the first cam slider 20 and the first bracket 103. The flexible member 10 can be made of amorphous metal or stainless steel. In this embodiment, the flexible member 10 is generally cylindrical. For example, the axial length l of the flexible member 10 is less than or equal to 1 mm, and the outer diameter d of the flexible member 10 is less than or equal to 2 mm, to ensure that the flexible member 10 can be installed between the first cam slider 20 and the first bracket 103 and abut against both the first cam slider 20 and the first bracket 103.

[0083] In this embodiment, the flexible member 10 includes an extended state and a compressed state. When the flexible member 10 is in the extended state, the flexible member 10 is not squeezed by the first cam slider 20. When the flexible member 10 is in the compressed state, the flexible member 10 is squeezed by the first cam slider 20. At this time, the flexible member 10 is deformed and generates elastic force. Specifically, when the flexible member 10 is sleeved on the first pin 101, the elastic force direction of the flexible member 10 is parallel to the length direction of the first pin 101. When the flexible member 10 is sleeved on the second pin 102, the elastic force direction of the flexible member 10 is parallel to the length direction of the second pin 102.

[0084] Please also refer to Figure 13 , Figure 13 yes Figure 11 The schematic diagram of the structure of the flexible member 10 in the first damping member 140 is shown at another angle.

[0085] The flexible member 10 is provided with an axial hole 11 that extends through the flexible member 10 in the axial direction. For example, the axial hole 11 is a circular hole. The wall profile of the axial hole 11 is consistent with the outer profile of the first pin 101 or the outer profile of the second pin 102, so that the flexible member 10 can be sleeved on the first pin 101 or the second pin 102.

[0086] The flexible member 10 also includes a first abutting portion 12, a second abutting portion 13 and a connecting portion 14. The first abutting portion 12 abuts the first cam slider 20, and the second abutting portion 13 abuts the first bracket 103. The connecting portion 14 is fixedly connected between the first abutting portion 12 and the second abutting portion 13. Exemplarily, the first abutting portion 12, the second abutting portion 13 and the connecting portion 14 are integrally formed. It is understandable that the first abutting portion 12 and the second abutting portion 13 are not easily deformed. When the flexible member 10 is squeezed, the first abutting portion and the second abutting portion can squeeze the connecting portion 14, causing the connecting portion 14 to be axially squeezed and deformed and generate elastic force.

[0087] The connecting portion 14 includes a plurality of connecting beams 141. The plurality of connecting beams 141 are spaced apart around the circumference of the through-shaft hole 11. In other words, the plurality of connecting beams 141 are spaced apart around the first pin 101 and the second pin 102. Under this arrangement, when the connecting portion 14 is squeezed by the first abutting portion 12 and the second abutting portion 13, the gap between two adjacent connecting beams 141 can provide deformation space for each connecting beam 141. After the connecting beam 141 is deformed, the flexible part 10 can generate elastic force and elastic feedback force, thereby providing damping force for the rotation of the first damping swing arm 110 or the second damping swing arm 120. In some other embodiments, the plurality of first connecting beams 141 can also be integrally formed.

[0088] In this embodiment, the plurality of connecting beams 141 are all inclined relative to the first abutting portion 12 and the second abutting portion 13. That is, each connecting beam 141 is a flexible inclined beam. In other embodiments, the connecting beams 141 may also be flexible straight beams or flexible curved beams.

[0089] In this embodiment, by angling the connecting beam 141, the effective length of the connecting beam 141 can be increased, thereby reducing the stiffness of the connecting beam 141. The deformation of the connecting beam 141 enables the flexible member 10 to generate a greater elastic force and elastic feedback force, thereby providing a greater damping force for the first damping swing arm 110 or the second damping swing arm 120, thereby helping to increase the rotating shaft torque of the rotating shaft mechanism 530, allowing users to experience a better damping feel when using the foldable electronic device 1000.

[0090] It should be noted that the thinner the connecting beam 141, the easier it is to deform. Under the same deformation, the smaller the elastic feedback force generated by the flexible part 10, and the smaller the stress generated by the flexible part 10. Conversely, the thicker the connecting beam 141, the less likely it is to deform. Under the same deformation, the greater the elastic feedback force generated by the flexible part 10, and the greater the stress generated by the flexible part 10. Therefore, in the actual production process, due to the small design space between the first cam slider 20 and the first bracket 103, it is necessary to reasonably design the aspect ratio of the flexible part 10. On the one hand, the stiffness of the flexible part 10 can be adjusted so that the feedback force generated by the deformation of the flexible part 10 can meet the shaft torque requirements of the shaft mechanism 530. On the other hand, excessive stress on the flexible part 10 can be prevented.

[0091] In this embodiment, there are two flexible parts 10. Among them, one flexible part 10 is sleeved on the first pin 101, and the other flexible part 10 is sleeved on the second pin 102. Along the width direction of the first bracket 103 (the X-axis direction in the figure), the two flexible parts 10 are spaced apart. Specifically, the two flexible parts 10 are the first flexible part 10a and the second flexible part 10b. The structure of the first flexible part 10a is the same as the structure of the second flexible part 10b. Among them, the first flexible part 10a is sleeved on the first pin 101, and can slide relative to the first pin 101 along the Y-axis direction. The second flexible part 10b is sleeved on the second pin 102, and can slide relative to the second pin 102 along the Y-axis direction. It can be understood that by arranging two flexible members 10 in the first damping member 140 of the rotating shaft mechanism 530, when the first cam slider 20 squeezes the first flexible member 10a and the second flexible member 10b, the elastic feedback forces generated by the first flexible member 10a and the second flexible member 10b are the same in magnitude, so that the forces applied to the first hinged end 22 and the fifth hinged end 23 are the same in magnitude, thereby preventing the first cam slider 20 from tilting during the sliding process relative to the first pin shaft 101 and the second pin shaft 102.

[0092] Please refer to Figure 7 and Figure 14 , Figure 14 yes Figure 9 FIG. 1 is a schematic structural diagram of the second damping member 150 in the damping assembly 100 .

[0093] The second damping member 150 includes a second cam slider 30, a baffle 40, an elastic member 50, and a third pin 60. The second cam slider 30 and baffle 40 are both sleeved around the first and second pins 101, 102 and can slide relative to the first and second pins 101, 102 along the Y-axis. The second cam slider 30 is located on the side of the first cam slider 20 facing away from the first bracket 103 and is spaced apart from both the first cam slider 20 and the first bracket 103. In other words, the first cam slider 20 is located between the second cam slider 30 and the first bracket 103 and is spaced apart from both the second cam slider 30 and the first bracket 103. The second cam slider 30 is also spaced apart from the second bracket 104 along the Y-axis to prevent the first bracket 103 from obstructing the axial movement of the second cam slider 30. The second cam slider 30 includes a second body 31, a second hinged end 32, and a sixth hinged end 33. Both the second hinged end 32 and the sixth hinged end 33 are fixedly connected to the second body 31. Exemplarily, the second body 31 is roughly a rectangular plate-shaped structure. The second hinged end 32 and the sixth hinged end 33 are both fixedly connected to the opposite ends of the second body 31 in the longitudinal direction (X-axis direction in the figure), and both extend in the direction away from the second body 31, and are both arranged toward the first cam slider 20. Along the X-axis direction, the second hinged end 32 and the sixth hinged end 33 are spaced apart. Among them, the second hinged end 32 is provided with a fifth mounting hole 323, and the fifth mounting hole 323 passes through the second hinged end 32 along the thickness direction of the second hinged end 32 (Y-axis direction in the figure). Among them, the hole wall profile of the fifth mounting hole 323 is consistent with the outer profile of the first pin shaft 101, so that the first pin shaft 101 can pass through the second hinged end 32 of the second cam slider 30, so that the second cam slider 30 can be sleeved on the first pin shaft 101.

[0094] The second hinged end portion 32 also includes a plurality of second protrusions 321 and a plurality of second recesses 322, which are alternately distributed around the circumference of the fifth mounting hole 313. The shape of each second protrusion 321 matches the shape of a fourth recess 1152 of the fourth hinged end portion 115. In other words, each second protrusion 321 can be precisely retained within a fourth recess 1152. The shape of each second recess 322 matches the shape of a fourth protrusion 1151 of the fourth hinged end portion 115. In other words, each second recess 322 can precisely accommodate a fourth protrusion 1151.

[0095] The sixth hinged end portion 33 defines a sixth mounting hole 333 extending through the sixth hinged end portion 33 along its thickness (the Y-axis direction in the figure). The wall profile of the sixth mounting hole 333 coincides with the outer profile of the second pin 102, facilitating the second pin 102's insertion through the sixth hinged end portion 33 of the second cam slider 30, thereby enabling the second cam slider 30 to be sleeved onto the second pin 102.

[0096] The sixth hinged end portion 33 also includes a plurality of sixth protrusions 331 and a plurality of sixth recesses 332, which are alternately distributed around the circumference of the sixth mounting hole 314. The shape of each sixth protrusion 331 matches the shape of the eighth recess 1252 of the eighth hinged end portion 125. In other words, each sixth protrusion 331 can be precisely retained within one of the eighth recesses 1252. The shape of each sixth recess 332 matches the shape of one of the eighth protrusions 1251 of the eighth hinged end portion 125. In other words, each sixth recess 332 can precisely accommodate one of the eighth protrusions 1251.

[0097] The baffle 40 is sleeved over the first and second pins 101, 102. It is located on the side of the second cam slider 30 facing away from the first cam slider 20 and spaced apart from the second cam slider 30. For example, the baffle 40 is a generally rectangular plate-shaped structure. The baffle 40 is provided with a seventh mounting hole 41 and an eighth mounting hole 42. Both the seventh and eighth mounting holes 41, 42 extend through the baffle 40 along its thickness (the Y-axis in the figure). The seventh and eighth mounting holes 41, 42 are spaced apart along the length of the baffle 40 (the X-axis in the figure). The wall profile of the seventh mounting hole 41 coincides with the outer contour of the first pin 101, facilitating the first pin 101 to pass through the baffle 40 and thus fit over it. The wall profile of the eighth mounting hole 42 coincides with the outer contour of the second pin 102, facilitating the second pin 102 to pass through the baffle 40 and thus fit over it. Two third pins 60 are installed between the baffle 40 and the second cam slider 30. Along the X-axis, the two third pins 60 are spaced apart. In other embodiments, the number of third pins 60 can be one, three, or more, and the embodiments of the present application do not impose any limitation on this.

[0098] The elastic member 50 abuts between the second cam slider 30 and the baffle 40. When pressed by the second cam slider 30, the elastic member 50 deforms and generates an elastic force. For example, the elastic member 50 may be a spring. The elastic force of the elastic member 50 is parallel to the elastic force of the flexible member 10. The length of the elastic member 50 is greater than that of the flexible member 10.

[0099] In this embodiment, there are four elastic members 50. Along the X-axis, the four elastic members 50 are arranged side by side. The four elastic members 50 include a first elastic member 50, a second elastic member 52, and two third elastic members 53. Along the X-axis, the first elastic member 51, the two third elastic members 53, and the second elastic member 52 are arranged side by side in sequence. The first elastic member 51 is sleeved on the first pin 101. The elastic force direction of the first elastic member 51 is parallel to the first pin 101 and to the elastic force direction of the flexible member 10. The length of the first elastic member 51 is greater than the length of the flexible member 10. The second elastic member 52 is sleeved on the second pin 102. The elastic force direction of the second elastic member 52 is parallel to the second pin 102. The length of the second elastic member 52 is greater than the length of the flexible member 10. Each third elastic member 53 is sleeved on a third pin 60 and is located between the first elastic member 51 and the second elastic member 52, and abuts between the second cam slider 30 and the baffle 40. The elastic force direction of the third elastic member 53 is parallel to the length direction of the third pin 60. The sum of the lengths of each third elastic member 53 is greater than the length of the flexible member 10. In other embodiments, the number of third elastic members 53 may be one, three, or more, and the embodiments of the present application do not impose any limitation on this.

[0100] In this embodiment, by setting a third pin shaft 60 between the second cam slider 30 and the baffle 40, and making the third elastic member 53 sleeved on the third pin shaft 60, the third elastic member 53 can always move along the length direction of the third pin shaft 60 without tilting during the movement, thereby ensuring the movement stability of the third elastic member 53 and avoiding the third elastic member 53 from interfering with the movement of the first elastic member 51 and the second elastic member 52.

[0101] In this embodiment, the hinge mechanism 530 has different rotational states during rotation. During this process, the first elastic member 50, the second elastic member 52, the third elastic member 53, and the flexible member 10 simultaneously compress and relax. For example, the hinge mechanism 530 has a first state and a second state, with the first state being different from the second state. When the hinge mechanism 530 is in the first state, the length of the first elastic member 51 is the first length, and the length of the flexible member 10 is the second length. In this case, the second length is less than the first length. When the hinge mechanism 530 is in the second state, the length of the first elastic member 51 is the third length, and the length of the flexible member 10 is the fourth length. In this case, the third length is greater than the first length. The fourth length is greater than the second length but less than the third length. The length change relationship between the second elastic member 52 and the flexible member 10, and the length change relationship between the third elastic member 53 and the flexible member 10 during rotation of the hinge mechanism 530 can be referred to above for the length change relationship between the first elastic member 51 and the flexible member 10, and will not be further described here.

[0102] In this embodiment, when the first damping swing arm 110 rotates, the first meshing teeth 1143 of the third hinged end 114 drive the first gear 132a to rotate, thereby driving the second gear 132b to rotate. When the second gear 132b rotates, the second meshing teeth 1243 drive the seventh hinged end 124 to rotate, thereby causing the second damping swing arm 120 to rotate, thereby achieving synchronous rotation of the first damping swing arm 110 and the second damping swing arm 120. The first damping swing arm 110 and the second damping swing arm 120 rotate in opposite directions. For example, when the rotating shaft mechanism 530 switches from the flattened state to the folded state, the first damping swing arm 110 rotates counterclockwise, while the second damping swing arm 120 rotates clockwise. When the rotating shaft mechanism 530 switches from the folded state to the flattened state, the first damping swing arm 110 rotates clockwise, while the second damping swing arm 120 rotates counterclockwise.

[0103] In this embodiment, when the first damping swing arm 110 rotates, it drives the third hinged end 114 and the fourth hinged end 115 to rotate synchronously. When the third hinged end 114 rotates, the third protrusion 1141 rotates from the first recess 222 of the first hinged end 22 to the first protrusion 221, and then rotates from the first protrusion 221 into the first recess 222, thereby repeatedly pushing the first hinged end 22 of the first cam slider 20 to slide along the first pin 101, thereby compressing the first flexible member 10a, causing the first flexible member 10a to generate an elastic force. The elastic feedback force of the first flexible member 10a acts on the first hinged end 22 of the first cam slider 20, causing the first hinged end 22 of the first cam slider 20 to squeeze the third hinged end 114, thereby providing a damping force for the rotation of the third hinged end 114, and thus providing a damping force for the rotation of the first damping swing arm 110.

[0104] It should be noted that, since the first bracket 103 is fixed on the fixing seat 200, the first bracket 103 can act as a barrier to the first flexible member 10a, thereby squeezing the first abutting portion 12 and the second abutting portion 13 of the first flexible member 10a. Under the action of pressure, the first abutting portion 12 and the second abutting portion 13 squeeze the multiple connecting beams 141 of the connecting portion 14 in the first flexible member 10a, causing the multiple connecting beams 141 to deform. In this process, the first abutting portion 12 of the first flexible member 10a can be regarded as a movable end, and the second abutting portion 13 of the first flexible member 10a can be regarded as a fixed end. That is, the end of the connecting beam 141 of the first flexible member 10a fixedly connected to the first abutting portion 12 can be regarded as the movable end, and the end of the connecting beam 141 of the first flexible member 10a fixedly connected to the second abutting portion 13 can be regarded as the fixed end. At this time, the connecting beam 141 of the first flexible member 10a is equivalent to a cantilever beam. Under the action of pressure, the movable end of the connecting beam 141 of the first flexible member 10 a is compressed toward the fixed end, so that the first flexible member 10 a generates elastic force and elastic feedback force.

[0105] At the same time, when the fourth hinged end portion 115 rotates, the fourth protrusion 1151 of the fourth hinged end portion 115 rotates from the second recess 322 of the second hinged end portion 32 to the second protrusion 321, and then rotates from the second protrusion 321 into the second recess 322, thereby repeatedly pushing the second hinged end portion 32 of the second cam slider 30 to slide along the first pin 101, thereby compressing the first elastic member 51, causing the first elastic member 51 to generate an elastic force. The elastic feedback force of the first elastic member 51 acts on the second hinged end portion 32 of the second cam slider 30, causing the second hinged end portion 32 of the second cam slider 30 to squeeze the fourth hinged end portion 115, thereby providing a damping force for the rotation of the fourth hinged end portion 115, and further providing a damping force for the rotation of the first damping swing arm 110. In other words, when the first damping swing arm 110 rotates, it squeezes the first flexible part 10a and the first elastic part 51, causing them to generate elastic force. The elastic feedback force of the elastic force acts on the first damping swing arm 110, providing a damping force for the rotation of the first damping swing arm 110. The damping force of the first damping swing arm 110 is transmitted and acts on the first shell 510, thereby providing a damping feel for the user.

[0106] When the second damping swing arm 120 rotates, it drives the seventh hinged end 124 and the eighth hinged end 125 to rotate synchronously. When the seventh hinged end 124 rotates, the seventh protrusion 1241 rotates from the fifth recess 232 to the fifth protrusion 231, and then rotates from the fifth protrusion 231 into the fifth recess 232, thereby repeatedly pushing the fifth hinged end 23 of the first cam slider 20 to slide along the second pin 102, thereby compressing the second flexible member 10b and generating an elastic force. The elastic feedback force of the second flexible member 10b acts on the fifth hinged end 23 of the first cam slider 20, causing the fifth hinged end 23 of the first cam slider 20 to squeeze the seventh hinged end 124, thereby providing a damping force for the rotation of the seventh hinged end 124, and thus providing a damping force for the rotation of the second damping swing arm 120.

[0107] It should be noted that since the first bracket 103 is fixed to the fixing seat 200, the first bracket 103 can block the second flexible member 10b, thereby squeezing the first abutting portion 12 and the second abutting portion 13 of the second flexible member 10b. Under the action of pressure, the first abutting portion 12 and the second abutting portion 13 of the second flexible member 10b squeeze the multiple connecting beams 141 of the connecting portion 14 of the second flexible member 10b, causing the multiple connecting beams 141 to deform. In this process, the first abutting portion 12 of the second flexible member 10b can be regarded as the movable end, and the second abutting portion 13 of the second flexible member 10b can be regarded as the fixed end. In other words, the end of the connecting beam 141 of the second flexible member 10b fixedly connected to the first abutting portion 12 can be regarded as the movable end, and the end of the connecting beam 141 of the second flexible member 10b fixedly connected to the second abutting portion 13 can be regarded as the fixed end. At this time, the connecting beam 141 of the second flexible member 10b is equivalent to a cantilever beam. Under the action of pressure, the movable end of the connecting beam 141 of the second flexible member 10 b is compressed toward the fixed end, so that the second flexible member 10 b generates elastic force and elastic feedback force.

[0108] At the same time, when the eighth hinged end portion 125 rotates, the eighth protrusion 1251 of the eighth hinged end portion 125 rotates from the sixth recess 332 of the sixth hinged end portion 33 to the sixth protrusion 331, and then rotates from the sixth protrusion 331 into the sixth recess 332, thereby repeatedly pushing the sixth hinged end portion 33 of the fourth hinged end portion 115 to slide along the second pin 102, thereby compressing the second elastic member 52, causing the second elastic member 52 to generate an elastic force. The elastic feedback force of the second elastic member 52 acts on the sixth hinged end portion 33 of the second cam slider 30, causing the sixth hinged end portion 33 to squeeze the eighth hinged end portion 125, thereby providing a damping force for the rotation of the eighth hinged end portion 125, and further providing a damping force for the rotation of the second damping swing arm 120. In other words, when the second damping swing arm 120 rotates, it squeezes the second flexible part 10b and the second elastic part 52, causing them to generate elastic force. The elastic feedback force of the elastic force acts on the second damping swing arm 120, providing damping force for the rotation of the second damping swing arm 120. The damping force of the second damping swing arm 120 is transmitted and acts on the second shell 520, thereby providing a damping feel to the user.

[0109] Furthermore, when the first damping swing arm 110 and the second damping swing arm 120 rotate synchronously, the second cam slider 30 also compresses the third elastic member 53, causing the third elastic member 53 to generate an elastic force. The elastic feedback force of the third elastic member 53 acts on the second cam slider 30, pushing the second cam slider 30 to slide. The second cam slider 30 compresses the first damping swing arm 110 and the second damping swing arm 120, thereby also providing a damping force for the rotation of the first and second damping swing arms 110 and 120.

[0110] It should be understood that in the damping assembly 100 of the existing rotating shaft mechanism 530, a second cam slider 30 and an elastic member 50 are typically disposed between the damping swing arm and the second bracket 104. The meshing rotation between the damping swing arm and the second cam slider 30 compresses the elastic member 50, thereby providing a damping force for the rotation of the damping swing arm. In contrast, only the first cam slider 20 is disposed between the damping swing arm and the first bracket 103. The meshing rotation between the cam of the damping swing arm and the first cam slider 20 provides the damping force for the damping swing arm. Furthermore, a clearance is typically reserved between the first bracket 103 and the first cam slider 20 to prevent the first bracket 103 from obstructing the axial sliding of the first cam slider 20.

[0111] In this embodiment, a flexible member 10 is disposed between the first bracket 103 and the first cam slider 20, and the axial movement of the first cam slider 20 is used to compress the flexible member 10, causing the flexible member 10 to deform and generate an axial elastic force. This axial elastic force acts on the first cam slider 20 and is transmitted through the first cam slider 20 to the first and second damping swing arms 110 and 120, thereby increasing the axial force acting on the first and second damping swing arms 110 and 120. This, in turn, increases the damping torque generated during the rotation of the first and second damping swing arms 110 and 120 within a limited design space. This further facilitates the hovering function of the hinge mechanism 530 and further enhances the damping effect of the hinge mechanism 530, providing the user with a better damping feel. Furthermore, this arrangement fully utilizes the clearance between the first bracket 103 and the first cam slider 20, without occupying additional space for other components of the hinge mechanism 530 or increasing the size of the hinge mechanism 530, thus meeting the design requirements for a lightweight and thin foldable electronic device 1000.

[0112] Please refer again Figure 7 and Figure 8. When the rotating shaft mechanism 530 is in the flattened state, the first damping swing arm 110 and the second damping swing arm 120 are both flattened relative to the fixed seat 200. At this time, the third hinge end 114 is engaged with the first hinge end 22. It should be noted that the engagement of the third hinge end 114 with the first hinge end 22 means that the third protrusion 1141 of the third hinge end 114 is located in the first recess 222 of the first hinge end 22, and the first protrusion 221 of the first hinge end 22 is located in the third recess 1142 of the third hinge end 114. Similar descriptions below can be understood in the same way. The fourth hinge end 115 is engaged with the second hinge end 32. The seventh hinge end 124 is engaged with the fifth hinge end 23. The eighth hinge end 125 is engaged with the sixth hinge end 33. The first flexible member 10a, the second flexible member 10b, the first elastic member 51, the second elastic member 52, and the third elastic member 53 are all in a pre-compression state. It should be noted that the “pre-compression state” can be a compressed state or a natural state, and similar descriptions below can be understood in the same way.

[0113] Please also refer to Figure 15 , Figure 15 yes Figure 5 The diagram shows a partial structure of the rotating shaft mechanism 530 in the first intermediate state, wherein the fixing base 200 is not shown.

[0114] As the pivot mechanism 530 rotates from the flattened state to the first intermediate state, the first damping swing arm 110 rotates counterclockwise, driving the first damping shaft seat 112 and the third damping shaft seat 113 to rotate counterclockwise, thereby driving the third hinge end 114 and the fourth hinge end 115 to rotate counterclockwise. As the third hinge end 114 rotates, the third protrusion 1141 of the third hinge end 114 pivots out from the first recess 222 of the first hinge end 22 and abuts against the first hinge end 22, causing the first hinge end 22 to compress the first flexible member 10a, thereby generating an elastic force in the first flexible member 10a. The elastic feedback force of the first flexible member 10a acts on the first hinge end 22, causing it to abut against the third hinge end 114, preventing the third hinge end 114 from rotating, thereby providing a damping force for the rotation of the first damping swing arm 110. When the fourth hinged end portion 115 rotates, the fourth protrusion 1151 of the fourth hinged end portion 115 rotates out of the second recess 322 of the second hinged end portion 32 and abuts the second hinged end portion 32, causing the second hinged end portion 32 to compress the first elastic member 51 and generate an elastic force. The elastic feedback force of the first elastic member 51 acts on the second hinged end portion 32, causing the second hinged end portion 32 to abut the fourth hinged end portion 115, thereby preventing the fourth hinged end portion 115 from rotating. This provides a damping force for the rotation of the first damping swing arm 110 and enables the first damping swing arm 110 to hover during rotation. Simultaneously, during this process, driven by the second hinged end portion 32, the second cam slider 30 also compresses the third elastic member 53, causing the third elastic member 53 to generate an elastic force. The elastic feedback force of the third elastic member 53 acts on the second cam slider 30, thereby increasing the force to prevent the fourth hinged end 115, providing a greater damping force for the rotation of the first damping swing arm 110, and thus being more conducive to achieving the hovering of the first damping swing arm 110 during the rotation process.

[0115] When the first damping swing arm 110 rotates counterclockwise, it drives the synchronous gear 132 to rotate, thereby driving the seventh hinged end 124 and the eighth hinged end 125 to rotate counterclockwise through the synchronous gear 132, thereby driving the second damping swing arm 120 to rotate clockwise. When the seventh hinged end 124 rotates, the seventh protrusion 1241 of the seventh hinged end 124 rotates out from the fifth recess 232 of the fifth hinged end 23 and abuts against the fifth hinged end 23, causing the fifth hinged end 23 to compress the second flexible member 10b, thereby generating an elastic force on the second flexible member 10b. The elastic feedback force of the second flexible member 10b acts on the fifth hinged end 23, causing the fifth hinged end 23 to abut against the seventh hinged end 124, preventing the seventh hinged end 124 from rotating, thereby providing a damping force for the rotation of the second damping swing arm 120. When the eighth hinged end 125 rotates, the eighth protrusion 1251 of the eighth hinged end 125 rotates out of the sixth recess 332 of the sixth hinged end 33 and abuts the sixth hinged end 33, causing the sixth hinged end 33 to compress the second elastic member 52 and generate an elastic force. The elastic feedback force of the second elastic member 52 acts on the sixth hinged end 33, causing the sixth hinged end 33 to abut against the eighth hinged end 125, thereby preventing the eighth hinged end 125 from rotating. This provides a damping force for the rotation of the second damping swing arm 120 and enables the second damping swing arm 120 to hover during rotation. Simultaneously, during this process, driven by the sixth hinged end 33, the second cam slider 30 compresses the third elastic member 53, causing the third elastic member 53 to generate an elastic force. The elastic feedback force of the third elastic member 53 acts on the second cam slider 30, thereby increasing the force to prevent the eighth hinged end 125, providing a greater damping force for the rotation of the second damping swing arm 120, and thus being more conducive to achieving the hovering of the second damping swing arm 120 during the rotation process.

[0116] like Figure 15As shown, when the rotating shaft mechanism 530 rotates to the first intermediate state, the third protrusion 1141 of the third hinge end 114 faces and abuts the first protrusion 221 of the regional cam portion. The fourth protrusion 1151 of the fourth hinge end 115 faces and abuts the second protrusion 321 of the second hinge end 32. At this point, the first flexible member 10a and the first elastic member 51 are both in a compressed state and have reached their maximum compression. The seventh protrusion 1241 of the seventh hinge end 124 faces and abuts the fifth protrusion 231 of the fifth hinge end 23. The eighth protrusion 1251 of the eighth hinge end 125 faces and abuts the sixth protrusion 331 of the sixth hinge end 33. At this point, the second flexible member 10b and the second elastic member 52 are both in a compressed state and have reached their maximum compression. Simultaneously, the third elastic member 53 is also in a compressed state and has reached its maximum compression. That is, at this time, the elastic forces of the first flexible member 10a, the second flexible member 10b, the first elastic member 51, the second elastic member 52 and the third elastic member 53 reach a maximum value, and the damping forces provided by the first damping member 140 and the second damping member 150 to the first damping swing arm 110 and the second damping swing arm 120 both reach a maximum value.

[0117] exist Figure 15On the basis shown, the first damping swing arm 110 and the second damping swing arm 120 continue to rotate in a direction approaching each other, so that the rotating shaft mechanism 530 rotates to the second intermediate state (not shown). The first damping swing arm 110 continues to rotate counterclockwise, thereby driving the second damping swing arm 120 to continue to rotate clockwise. Specifically, the third hinge end 114 and the fourth hinge end 115 continue to rotate counterclockwise. The third protrusion 1141 of the third hinge end 114 slides into the first recess 222 of the first hinge end 22 and engages with the first hinge end 22. The fourth protrusion 1151 of the fourth hinge end 115 slides into the recess of the second hinge end 32 and engages with the second hinge end 32. The first flexible member 10a and the first elastic member 51 elastically recover and return to the pre-compression state. The elastic feedback force of the first flexible member 10a acts on the first hinged end 22 and, through it, on the third hinged end 114, preventing the third hinged end 114 from rotating. The elastic feedback force of the first elastic member 51 acts on the second hinged end 32 and, through it, on the fourth hinged end 115, preventing the fourth hinged end 115 from rotating. This provides a damping force for the rotation of the first damping swing arm 110, thereby enabling the first damping swing arm 110 to hover during rotation. Simultaneously, the third elastic member 53 elastically recovers and returns to its pre-compressed state. The elastic restoring force of the third elastic member 53 acts on the second cam slider 30 and, through it, on the fourth hinged end 115, increasing the force preventing the fourth hinged end 115 from rotating, thereby increasing the damping force provided for the rotation of the first damping swing arm 110 and, in turn, facilitating the first damping swing arm 110 to hover during rotation.

[0118] The seventh and eighth hinged ends 124, 125 continue to rotate clockwise. The seventh protrusion 1241 of the seventh hinged end 124 slides into the fifth recess 232 of the fifth hinged end 23 and engages with the second hinged end 32. The eighth protrusion 1251 of the eighth hinged end 125 slides into the sixth recess 332 of the sixth hinged end 33 and engages with the sixth hinged end 33. The second flexible member 10b elastically recovers and returns to its pre-compressed state. The elastic feedback force of the second flexible member 10b acts on the fifth hinge end 23 and, through it, on the seventh hinge end 124, preventing the seventh hinge end 124 from rotating. The elastic feedback force of the second elastic member 52 acts on the sixth hinge end 33 and, through it, on the eighth hinge end 125, preventing the eighth hinge end 125 from rotating. This provides a damping force for the rotation of the second damping swing arm 120, thereby enabling the second damping swing arm 120 to hover during rotation. Simultaneously, the third elastic member 53 elastically recovers and returns to its pre-compressed state. The elastic restoring force of the third elastic member 53 acts on the second body 31 of the second cam slider 30 and, through it, on the eighth hinge end 125, increasing the force preventing the eighth hinge end 125 from rotating. This, in turn, increases the damping force for the rotation of the second damping swing arm 120, further facilitating the hovering of the second damping swing arm 120 during rotation.

[0119] Please also refer to Figure 16 , Figure 16 yes Figure 5 The diagram shows a partial structure of the rotating shaft mechanism 530 in a folded state, wherein the fixing base 200 is not shown.

[0120] After the hinge mechanism 530 rotates to the second intermediate state, it continues to rotate the first damping swing arm 110 and the second damping swing arm 120 toward each other, causing the hinge mechanism 530 to rotate to the folded state. The first damping swing arm 110 continues to rotate counterclockwise, driving the third hinge end 114 and the fourth hinge end 115 to continue to rotate counterclockwise. Specifically, the third protrusion 1141 of the third hinge end 114 first rotates to face the first protrusion 221 of the first hinge end 22, then slides into the first recess 222 of the first hinge end 22 and engages with the first hinge end 22. The first flexible member 10a is first compressed and then elastically recovers. The fourth protrusion 1151 of the fourth hinged end portion 115 first rotates to face the second protrusion 321 of the second hinged end portion 32, then slides into the second recess 322 of the second hinged end portion 32 and engages with the second hinged end portion 32. The first elastic member 51 is first compressed and then elastically recovers, thereby providing a damping force for the rotation of the first damping swing arm 110 and causing the first damping swing arm 110 to hover during the rotation process. Furthermore, during the rotation process, the third elastic member 53 is first compressed by the second cam slider 30 and then elastically recovers, also providing a damping force for the rotation of the first damping swing arm 110 and causing the first damping swing arm 110 to hover during the rotation process.

[0121] As the first damping swing arm 110 continues to rotate counterclockwise, it drives the second damping swing arm 120 to continue to rotate clockwise, thereby driving the seventh hinged end 124 and the eighth hinged end 125 to continue to rotate clockwise. Specifically, the seventh protrusion 1241 of the seventh hinged end 124 first rotates to face the fifth protrusion 231 of the fifth hinged end 23, then slides into the fifth recess 232 of the fifth hinged end 23 and engages with the fifth hinged end 23, causing the second flexible member 10b to be compressed and then elastically restored. The eighth protrusion 1251 of the eighth hinge end portion 125 first rotates to face the sixth protrusion 331 of the sixth hinge end portion 33, and then slides into the sixth recess 332 of the sixth hinge end portion 33 and engages with the sixth hinge end portion 33. The second elastic member 52 is first compressed and then elastically restored, thereby providing a damping force for the rotation of the second damping swing arm 120 and achieving the suspension of the second damping swing arm 120 during the rotation process, thereby placing the rotating shaft mechanism 530 in a folded state (such as Figure 16 In addition, during the rotation process, the third elastic member 53 is first compressed by the second cam slider 30 and then elastically recovers, thereby providing a damping force for the rotation of the second damping swing arm 120 and achieving the suspension of the second damping swing arm 120 during the rotation process.

[0122] When the hinge mechanism 530 is in the folded state, the first damping swing arm 110 and the second damping swing arm 120 are folded relative to each other, the third hinge end 114 is engaged with the first hinge end 22, the fourth hinge end 115 is engaged with the second hinge end 32, the seventh hinge end 124 is engaged with the fifth hinge end 23, and the eighth hinge end 125 is engaged with the sixth hinge end 33. The first flexible member 10a, the second flexible member 10b, the first elastic member 51, the second elastic member 52, and the third elastic member 53 are all in a pre-compressed state.

[0123] In this embodiment, by disposing a flexible member 10 within the first damping member 140 and installing the flexible member 10 between the first bracket 103 and the first cam slider 20, during the rotation of the first damping swing arm 110 and the second damping swing arm 120, the axial movement of the first cam slider 20 is utilized to compress the flexible member 10, causing the flexible member 10 to deform and generate an axial elastic force, thereby generating a force that prevents the rotation of the first damping swing arm 110 and the second damping swing arm 120, providing a damping force for the rotation of the first damping swing arm 110 and the second damping swing arm 120, thereby providing a damping feel for the user. Furthermore, installing the flexible member 10 between the first bracket 103 and the first cam slider 20 fully utilizes the movement clearance between the first bracket 103 and the first cam slider 20, thereby neither occupying additional space in the hinge mechanism 530 for other components nor increasing the size of the hinge mechanism 530, thereby meeting the design requirements of the foldable electronic device 1000 for a lightweight and thin design.

[0124] Furthermore, this embodiment also includes a second damping member 150. During the rotation of the first damping swing arm 110 and the second damping swing arm 120, the second damping member 150 generates a force that prevents the first damping swing arm 110 and the second damping swing arm 120 from rotating, thereby providing a damping force for the rotation of the first damping swing arm 110 and the second damping swing arm 120, thereby providing a damping feel for the user. This arrangement, combined with the use of the first damping member 140 and the second damping member 150, can further enhance the user experience.

[0125] Furthermore, the damping force provided by the first damping member 140 and the second damping member 150 can continuously change during the rotation of the hinge mechanism 530. When the hinge mechanism 530 rotates to the folded state and the flattened state, the first damping swing arm 110 engages with both the first damping member 140 and the second damping member 150, and the second damping swing arm 120 engages with both the first damping member 140 and the second damping member 150. At this point, the damping force provided by both the first damping member 140 and the second damping member 150 is minimal, allowing the user to perceive the change in damping force, thereby providing a locked feeling when the hinge mechanism 530 is fully flattened or folded.

[0126] See also Figure 17 and Figure 18 , Figure 17 yes Figure 5 The structure diagram of the damping assembly 100 in the rotating shaft mechanism 530 in the second embodiment is shown. Figure 18 yes Figure 17 A schematic structural diagram of the flexible member 10 of the first damping member 140 in the damping assembly 100 is shown.

[0127] The flexible member 10 of the first damping member 140 in the damping assembly 100 shown in this embodiment differs from the flexible member 10 of the first damping member 140 in the damping assembly 100 shown in the first embodiment described above in that the first abutting portion 12 of the flexible member 10 includes a plurality of first sub-abutting portions 12a. These first sub-abutting portions 12a are spaced apart around the circumference of the through-shaft hole 11. In other words, these first sub-abutting portions 12a are spaced apart around the first pin 101 or the second pin 102. Each first sub-abutting portion 12a abuts against the first cam slider 20. The second abutting portion 13 of the flexible member 10 includes a plurality of second sub-abutting portions 13a. These second sub-abutting portions 13a are spaced apart around the circumference of the through-shaft hole 11. In other words, these second sub-abutting portions 13a are spaced apart around the first pin 101 or the second pin 102. Each second sub-abutting portion 13a abuts against the first bracket 103. In this embodiment, the flexible member 10 is substantially cam-shaped. Along the axial direction of the flexible member 10, each second sub-abutting portion 13a is correspondingly disposed with one first sub-abutting portion 12a.

[0128] In this embodiment, each connecting beam 141 of the flexible member 10 is connected between two adjacent first sub-abutment portions 12a and two adjacent second sub-abutment portions 13a. Specifically, each connecting beam 141 includes a first sub-beam 1411 and a second sub-beam 1412. The second sub-beam 1412 contacts the first sub-beam 1411. Exemplarily, the first sub-beam 1411 and the second sub-beam 1412 are integrally formed. The first sub-beam 1411 is connected between two adjacent first sub-abutment portions 12a. Specifically, the first sub-beam 1411 includes a first portion 1411a and two second portions 1411b. The two second portions 1411b are fixedly connected to the first portion 1411a and spaced apart on opposite sides of the first portion 1411a. Exemplarily, the two second portions 1411b are integrally formed with the first portion 1411a. The two second portions 1411b extend along the thickness direction of the first portion 1411a in a direction away from the first portion 1411a. Each second portion 1411 a is connected to one first sub-abutting portion 12 a .

[0129] The second sub-beam 1412 is connected between two adjacent second sub-abutment portions 13a. Specifically, the second sub-beam 1412 includes a third portion 1412a and two fourth portions 1412b. The two fourth portions 1412b are fixedly connected to the third portion 1412a and spaced apart on opposite sides of the third portion 1412a. Exemplarily, the two fourth portions 1412b are integrally formed with the third portion 1412a. The third portion 1412a is connected to a side of the first portion 1411a facing away from the second portion 1411b. Exemplarily, the third portion 1412a is integrally formed with the first portion 1411a. The two fourth portions 1412b extend along the thickness direction of the third portion 1412a, away from the third portion 1412a. Each fourth portion 1412b is connected to a second sub-abutment portion 13a.

[0130] Under this setting, when the flexible part 10 is squeezed, the gap between two adjacent first sub-abutment portions 12a, the gap between two adjacent second sub-abutment portions 13a, and the gap between two adjacent connecting beams 141 can provide deformation space for the flexible part 10, so that the elastic force and elastic feedback force output by the flexible part 10 are increased, thereby providing a greater damping force for the rotation of the first damping swing arm 110 and the second damping swing arm 120.

[0131] Please refer to Figure 19 and Figure 20 , Figure 19 yes Figure 5 The structural diagram of the damping assembly 100 in the rotating shaft mechanism 530 in the third embodiment is shown. Figure 20 yes Figure 19 A schematic structural diagram of the flexible member 10 of the first damping member 140 in the damping assembly 100 is shown.

[0132] The flexible member 10 of the first damping member 140 in the damping assembly 100 shown in this embodiment differs from the flexible member 10 of the first damping member 140 in the damping assembly 100 shown in the second embodiment described above in that the first sub-beam 1411 and the second sub-beam 1412 are formed separately. Specifically, the first portion 1411a of the first sub-beam 1411 and the third portion 1412a of the second sub-beam 1412 are formed separately. In this embodiment, the first sub-beam 1411 and the first sub-abutment portion 12a are formed integrally. The second sub-beam 1412 and the second sub-abutment portion 13a are formed integrally. The end surface of the second sub-beam 1412 facing away from the second sub-abutment portion 13a abuts the end surface of the first sub-beam 1411 facing away from the second sub-abutment portion 13a. With this arrangement, the first sub-beam 1411 and the second sub-beam 1412 are formed separately to form the connecting beam 141, which reduces the difficulty in manufacturing the connecting beam 141 and facilitates the fabrication of the flexible member 10.

[0133] Please refer to Figure 21 and Figure 22 , Figure 21 1 is a schematic diagram of deformation simulation of the flexible member 10 shown in the first embodiment of the present application. Figure 22 1 is a force-displacement curve diagram of the flexible member 10 during deformation process shown in the first embodiment of the present application.

[0134] The present application provides the flexible member 10 shown in the first embodiment above, and conducts a static compression simulation experiment to obtain the elastic feedback force data generated by the flexible member 10 shown in the first embodiment during deformation as the displacement changes. The results are as follows: Figure 23 As shown. Among them, the displacement of the flexible part 10 refers to the compression amount of the flexible part 10. According to the experimental results, as the compression amount of the flexible part 10 gradually increases, the elastic feedback force generated by the flexible part 10 also gradually increases. When the compression amount of the flexible part 10 is 0.2mm, the elastic feedback force generated by the flexible part 10 reaches a maximum. Among them, the value of the maximum elastic feedback force of the flexible part 10 is about 13N. This shows that during the rotation of the rotating shaft mechanism 530, as the compression amount of the flexible part 10 increases, the damping force provided by the flexible part 10 to the rotating shaft mechanism 530 is also greater, which is more conducive to achieving the hovering of the rotating shaft mechanism 530. In addition, in the process of the flexible part 10 being compressed, the elastic feedback force generated by the flexible part 10 gradually increases, which also shows that the length-to-thickness ratio of the flexible part 10 provided in this embodiment is reasonably designed, its structure has flexible characteristics, and its mechanical properties are stable.

[0135] Compared with the damping assembly 100 of the existing hinge mechanism 530, the damping assembly 100 provided in this embodiment can provide a greater damping force for the hinge mechanism 530 by setting a flexible member 10 in the first damping member 140 and using the first damping member 140 and the second damping member 150 in combination, thereby helping to increase the hinge torque of the hinge mechanism 530, and is more conducive to achieving the hovering of the hinge mechanism 530 during the rotation process, providing users with a better opening and closing feel when using the foldable electronic device 1000, and further enhancing the user's experience.

[0136] Please refer to Figure 23 and Figure 24 , Figure 23 : is a deformation simulation diagram of the flexible member 10 shown in the second embodiment of the present application, Figure 24 1 is a force-displacement curve diagram of the flexible member 10 during deformation shown in the second embodiment of the present application.

[0137] The present application provides the flexible member 10 shown in the second embodiment above, and conducts a static compression simulation experiment to obtain the rebound force data generated by the flexible member 10 shown in the second embodiment during deformation as the displacement changes. The results are as follows: Figure 24As shown. Among them, the displacement of the flexible part 10 refers to the compression amount of the flexible part 10. According to the experimental results, as the compression amount of the flexible part 10 gradually increases, the elastic feedback force generated by the flexible part 10 first increases and then decreases, and then tends to be stable. When the compression amount of the flexible part 10 is 0.2mm, the elastic feedback force generated by the flexible part 10 is about 16N. This shows that compared with the flexible part 10 shown in the first embodiment, the flexible part 10 shown in this embodiment can generate a greater elastic feedback force, which can meet the requirements of the hinge mechanism 530 for a larger output force. At the same time, it can also provide a greater damping force for the hinge mechanism 530, thereby further helping to increase the hinge torque of the hinge mechanism 530, and more conducive to achieving the hovering of the hinge mechanism 530 during the rotation process, providing users with a better opening and closing feel when using the foldable electronic device 1000, and further enhancing the user's experience.

[0138] The above are only some of the embodiments and implementations of this application. The scope of protection of this application is not limited thereto. Any changes or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in this application should be included in the scope of protection of this application. Therefore, the scope of protection of this application should be based on the scope of protection of the claims.

Claims

1. A rotating shaft mechanism, characterized in that: The invention comprises a first bracket, a first pin shaft, a second pin shaft, a first cam slider, a second cam slider, a baffle, a first elastic member, a first damping swing arm, a second damping swing arm and a flexible member, wherein the first pin shaft and the second pin shaft are both mounted on the first bracket, and are spaced apart and arranged opposite to each other along the width direction of the first bracket; The first cam slider, the second cam slider, and the baffle are all sleeved on the first pin and the second pin. The first cam slider is located between the second cam slider and the first bracket, and is spaced apart from the second cam slider and the first bracket. The first cam slider includes a first hinged end facing the second cam slider, and the second cam slider includes a second hinged end facing the first cam slider. The baffle is located on a side of the second cam slider facing away from the first cam slider, and is spaced apart from the second cam slider. The first damping swing arm and the first elastic member are both sleeved on the first pin shaft. The first damping swing arm includes a third hinged end and a fourth hinged end. The third hinged end and the fourth hinged end are arranged opposite to each other. The third hinged end is engaged with the first hinged end, and the fourth hinged end is engaged with the second hinged end. The first elastic member abuts between the second cam slider and the baffle. The second damping swing arm is sleeved on the second pin shaft, and along the width direction of the first bracket, the second damping swing arm and the first damping swing arm are spaced apart; The flexible member is sleeved on the first pin shaft or the second pin shaft and abuts between the first cam slider and the first bracket. The length of the flexible member is smaller than the length of the first elastic member.

2. The rotating shaft mechanism according to claim 1, characterized in that: The rotating shaft mechanism has a first state and a second state. When the rotating shaft mechanism is in the first state, the length of the first elastic member is the first length, and the length of the flexible member is the second length. When the rotating shaft mechanism is in the second state, the length of the first elastic member is a third length, the length of the flexible member is a fourth length, the third length is greater than the first length, and the fourth length is greater than the second length.

3. The rotating shaft mechanism according to claim 1 or 2, characterized in that: The elastic force direction of the flexible member is parallel to the elastic force direction of the first elastic member.

4. The rotating shaft mechanism according to any one of claims 1 to 3, characterized in that: The flexible part includes a first abutting portion, a second abutting portion and a connecting portion, wherein the first abutting portion, the second abutting portion and the connecting portion are all sleeved on the first pin shaft or the second pin shaft, the first abutting portion abuts against the first cam slider, the second abutting portion abuts against the first bracket, and the connecting portion is connected between the first abutting portion and the second abutting portion.

5. The rotating shaft mechanism according to claim 4, characterized in that: The connecting portion includes a plurality of connecting beams, and the plurality of connecting beams are arranged at intervals around the first pin shaft or the second pin shaft.

6. The rotating shaft mechanism according to claim 5, characterized in that: Each of the connecting beams is arranged obliquely relative to the first abutting portion and the second abutting portion.

7. The rotating shaft mechanism according to claim 5, characterized in that: The first abutting portion includes a plurality of first sub-abutting portions, each of which is spaced apart around the first pin shaft or the second pin shaft, and each of the first sub-abutting portions abuts against the first cam slider; The second abutting portion includes a plurality of second sub-abutting portions, the plurality of second sub-abutting portions are spaced around the first pin shaft or the second pin shaft, and each second sub-abutting portion abuts against the first bracket; Each of the connecting beams is connected between two adjacent first sub-abutting portions and two adjacent second sub-abutting portions.

8. The rotating shaft mechanism according to claim 7, characterized in that: Each of the connecting beams includes a first sub-beam and a second sub-beam, the first sub-beam is connected between two adjacent first sub-abutment portions, and the second sub-beam is in contact with the first sub-beam and connected between two adjacent second sub-abutment portions.

9. The rotating shaft mechanism according to claim 8, characterized in that: The first sub-beam and the second sub-beam are integrally formed.

10. The rotating shaft mechanism according to claim 9, characterized in that: The first sub-beam and the first abutting portion are integrally formed, the second sub-beam and the second abutting portion are integrally formed, and the end surface of the second sub-beam facing away from the second abutting portion abuts against the end surface of the first sub-beam facing away from the first abutting portion.

11. The rotating shaft mechanism according to any one of claims 1 to 10, characterized in that: The rotating shaft mechanism also includes a second elastic member, which is sleeved on the second pin shaft and abuts between the second cam slider and the baffle. Along the width direction of the first bracket, the second elastic member is spaced apart from the first elastic member, and the length of the second elastic member is greater than the length of the flexible member.

12. The rotating shaft mechanism according to claim 11, characterized in that: The rotating shaft mechanism also includes a third pin and a third elastic member. The third pin is installed between the first cam slider and the baffle, and is located between the first pin and the second pin. The third elastic member is sleeved on the third pin, and is located between the first elastic member and the second elastic member, and abuts between the second cam slider and the baffle.

13. The rotating shaft mechanism according to any one of claims 1 to 12, characterized in that: There are two flexible members, one of which is sleeved on the first pin shaft, and the other of which is sleeved on the second pin shaft. The two flexible members are spaced apart along the width direction of the first bracket.

14. A foldable electronic device, characterized in that: The invention comprises a first shell, a second shell and a rotating shaft mechanism according to any one of claims 1 to 13, wherein the rotating shaft mechanism is connected between the first shell and the second shell.

Images