Damping assembly and terminal device

Abstract

The invention provides a damping assembly. The damping assembly comprises a fixing assembly, a first elastic piece, a first clamping piece and a damping swing arm. The fixing assembly comprises a first protruding part, the first protruding part comprises a first rotating surface, the first rotating surface is an arc surface, and the first rotating surface is used for determining an axis extending in the first direction; the first clamping piece abuts against the first elastic piece. The damping swing arm is matched with the first rotating face, the damping swing arm is used for rotating around the axis and acting on the first clamping piece in the first direction, and the first clamping piece is used for acting on the first elastic piece in the first direction. The invention further provides a terminal device. The damping assembly and the terminal device provided by the invention have proper damping torque in a limited mounting space.

Description

Technical Field

[0001] The present application relates to the technical field of electronic equipment, and in particular to a damping component and a terminal device. Background Art

[0002] With the continuous advancement of display technology, foldable terminal devices are becoming a growing trend in electronic products. These foldable terminal devices include a hinge mechanism that allows them to switch between folded and unfolded states, enabling convenient portability and large-screen viewing. However, with the miniaturization of terminal devices, the damping components in the hinge mechanism struggle to maintain adequate damping torque within the confined installation space. Summary of the Invention

[0003] In view of this, it is necessary to provide a damping assembly and a terminal device with suitable damping torque in a limited installation space to solve the above problems.

[0004] In a first aspect, the present application provides a damping assembly comprising a fixing assembly, a first elastic member, a first clamping member, and a damping swing arm. The fixing assembly comprises a first protruding portion, the first protruding portion comprising a first rotating surface, the first rotating surface being an arc surface and configured to define an axis extending along a first direction; a first clamping member abutting against the first elastic member; and a damping swing arm cooperating with the first rotating surface. The damping swing arm is configured to rotate about the axis and act on the first clamping member in the first direction, and the first clamping member is configured to act on the first elastic member in the first direction.

[0005] The arc surface of the first protrusion can be used to limit the rotation axis of the rotating body. Compared with the complete cylindrical structure, in a limited installation space, the radius of the first protrusion can be increased, thereby increasing the size of the lever arm. According to the formula of the damping component, increasing the lever arm can correspondingly increase the damping torque, so that the damping component has a suitable damping torque in a limited installation space.

[0006] In a possible implementation of the first aspect, the fixing assembly includes a fixed base, the fixed base includes a first protrusion; the fixed base is provided with a first receiving groove and a first rotation groove, and the first receiving groove and the first rotation groove are connected to each other; the first elastic member and the first clamping member are both accommodated in the first receiving groove; the damping swing arm includes a rotating body, the rotating body cooperates with the first rotating surface, the rotating body and the first protrusion are both accommodated in the first rotation groove, and the rotating body abuts against the first clamping member.

[0007] The structural definition of the damping swing arm and the fixed base is used to enable the damping swing arm to rotate relative to the fixed base.

[0008] In a possible implementation of the first aspect, the first holding member includes a column and a supporting block, the column includes a first end and a second end, the first end and the second end are arranged along a first direction and connected to each other, the supporting block is located at the connection between the first end and the second end and surrounds the column, the first elastic member is sleeved on the outer periphery of the first end, and the second end is supported by the rotating body.

[0009] In the above design, the first elastic member is sleeved on the first end of the first clamping member, and the second end is abutted against the rotating body. When the damping swing arm rotates, it interacts with the rotating body, causing the first elastic member to deform and provide damping for the damping assembly.

[0010] In a possible implementation of the first aspect, the first rotating groove includes a first receiving area and a first moving area, which are arranged along a first direction and are connected to each other; the first elastic member and the first end are received in the first receiving area, and the second end is received in the first moving area.

[0011] The first rotating groove is used to hold the first elastic member and the first holding member, and can correspondingly limit the first elastic member and the first holding member.

[0012] In a possible implementation of the first aspect, the fixed base also includes a first abutting wall and a second abutting wall, the first abutting wall and the second abutting wall are spaced apart along the first direction, the space between the first abutting wall and the second abutting wall is a first receiving area, the first abutting wall is located on the side close to the first moving area, and the second abutting wall is located on the side away from the first moving area, one end of the first moving area passes through the first abutting wall, and the other end of the first moving area is connected to the first rotation groove; the abutting block can abut against the first abutting wall or move toward the second abutting wall.

[0013] The first supporting wall and the second supporting wall are used to respectively limit the first elastic member and the first holding member during the process in which the first holding member receives the force of the damping swing arm.

[0014] In a possible implementation of the first aspect, the rotating body includes a cam surface, a first concave surface and a second concave surface, the cam surface connects the first concave surface and the second concave surface, and the first concave surface and the second concave surface are both concave relative to the cam surface along a first direction; when the second end abuts against the first concave surface or the second concave surface, the abutting block is spaced apart from the first abutting wall, and when the second end abuts against the second concave surface, the abutting block compresses the first elastic member.

[0015] In the above design, the surface of the rotating body in contact with the first clamping member is structurally designed so that when the rotating body rotates, the first clamping member can move accordingly with the rotation of the rotating body, thereby causing the first elastic member to deform accordingly.

[0016] In a possible implementation of the first aspect, the fixed base also includes a second protrusion, which extends along the first direction toward the first protrusion; the second protrusion includes a second rotating surface, which is an arc surface, and the axis determined by the second rotating surface is the same as the axis determined by the first rotating surface, and the rotating body also cooperates with the second rotating surface.

[0017] In the above design, both sides of the damping swing arm can interact with the arc surface, which is beneficial to improving the balance stability of the damping swing arm rotation.

[0018] In a possible implementation of the first aspect, the damping assembly includes at least two first elastic members, the column includes at least two first ends, the at least two first ends are arranged side by side along the second direction, the second direction intersects with the first direction, and each first elastic member is sleeved on a first end.

[0019] In the above design, the same damping swing arm can act on at least two first elastic members at the same time, which is beneficial to improving the damping of the damping assembly.

[0020] In a possible implementation of the first aspect, the fixing assembly also includes a third protrusion, which extends along the first direction toward the first protrusion; the third protrusion includes a third rotating surface, which is an arc surface, and the axis determined by the third rotating surface is the same as the axis determined by the first rotating surface; the damping assembly also includes a second elastic member and a second clamping member, the second clamping member is abutted against the second elastic member, and the damping swing arm also cooperates with the third rotating surface, and the damping swing arm is also used to rotate around the axis and act on the second clamping member along the first direction, and the second clamping member is used to act on the second elastic member along the first direction.

[0021] In the above design, the opposite sides of the same damping swing arm act on the first elastic member and the second elastic member respectively, which is beneficial to improving the damping of the damping assembly and improving the balance stability of the rotation of the damping swing arm.

[0022] In a second aspect, the present application provides a terminal device including a damping assembly, wherein the terminal device has a suitable damping torque in a limited installation space. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 This is a structural diagram of the terminal device provided in an embodiment of the present application when it is in a folded state.

[0024] Figure 2 A schematic diagram of the structure of the terminal device provided in an embodiment of the present application during the deployment process.

[0025] Figure 3 This is a schematic diagram of the structure of the terminal device provided in an embodiment of the present application when it is in a flattened state.

[0026] Figure 4This is a structural diagram of a damping assembly 100' provided in the related art.

[0027] Figure 5 for Figure 4 The cross-sectional schematic diagram of the damping assembly along the AA direction is shown.

[0028] Figure 6 for Figure 3 The schematic diagram of the exploded structure of the terminal device is shown.

[0029] Figure 7 for Figure 6 An exploded view of the hinge mechanism in the terminal device is shown.

[0030] Figure 8 for Figure 7 An enlarged schematic diagram of a portion of the rotating shaft mechanism is shown.

[0031] Figure 9 for Figure 3 The terminal device is shown as a schematic diagram of an exploded structure in another orientation.

[0032] Figure 10 for Figure 9 An enlarged schematic diagram of region B is shown.

[0033] Figure 11 for Figure 1 The diagram shows a cross section of the hinge mechanism when the terminal device is in a folded state.

[0034] Figure 12 for Figure 11 The structural diagram of the rotating shaft mechanism is shown.

[0035] Figure 13 for Figure 2 The terminal device shown is a schematic cross-sectional view of the rotating shaft mechanism during the deployment process.

[0036] Figure 14 for Figure 13 The structural diagram of the rotating shaft mechanism is shown.

[0037] Figure 15 for Figure 3 The terminal device shown is a schematic cross-sectional view of the rotating shaft mechanism when it is in a flattened state.

[0038] Figure 16 for Figure 15 The structural diagram of the rotating shaft mechanism is shown.

[0039] Figure 17 A schematic structural diagram of a partial area of ​​a damping assembly provided in some other embodiments of the present application.

[0040] Figure 18 for Figure 17 The structure diagram of the damping assembly shown in another direction.

[0041] Figure 19 A schematic structural diagram of a partial area of ​​a damping assembly provided in some further embodiments of the present application.

[0042] Figure 20 for Figure 19 The structure diagram of the damping assembly shown in another direction.

[0043] Description of main component symbols

[0044]

[0045]

[0046] DETAILED DESCRIPTION

[0047] In order to more clearly understand the above-mentioned objects, features and advantages of the present application, the present application is described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the absence of conflict, the embodiments of the present application and the features in the embodiments can be combined with each other. In the following description, many specific details are set forth to facilitate a full understanding of the present application. The embodiments described are only a part of the embodiments of the present application, rather than all of the embodiments.

[0048] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which this application pertains. The terms used in this specification are for the purpose of describing specific embodiments only and are not intended to limit this application. The term "and / or" as used herein includes all and any combinations of one or more of the associated listed items.

[0049] In the various embodiments of the present application, for ease of description and not limitation, the term "connection" used in the patent specification and claims of the present application is not limited to physical or mechanical connections, whether direct or indirect. "Up," "down," "above," "below," "left," "right," etc. are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship also changes accordingly.

[0050] See also Figures 1 to 3 , Figure 1 This is a structural diagram of the terminal device 200 provided in an embodiment of the present application when it is in a folded state. Figure 2 is a structural diagram of the terminal device 200 provided in an embodiment of the present application during the deployment process. Figure 3This is a structural diagram of the terminal device 200 provided in an embodiment of the present application when it is in a flattened state.

[0051] For ease of description, an XYZ coordinate system is established, wherein the X-axis direction is the width direction of the terminal device 200 in the folded state, the Y-axis direction is the length direction of the terminal device 200 in the folded state, and the Z-axis direction is the thickness direction of the terminal device 200 in the folded state. Figures 1 to 3 The terminal device 200 shown can be folded along the Y-axis direction, wherein the Y-axis direction may be a first direction, the X-axis direction may be a second direction, and the first direction and the second direction intersect.

[0052] The terminal device 200 can be a foldable electronic product, such as a mobile phone, tablet computer, laptop computer, e-book reader, camera, wearable device, home appliance, or in-vehicle device. The terminal device 200 can also be a non-electronic product, such as a Bluetooth headset, wallet, or door or window. It should be noted that for different terminal devices 200, the terminal device 200 can also be considered to be rotatable, that is, some components of the terminal device 200 can rotate relative to other components. In this embodiment, the terminal device 200 is described as a foldable mobile phone.

[0053] The terminal device 200 includes a first housing 210, a second housing 220, and a hinge mechanism 230. The hinge mechanism 230 rotatably connects the first and second housings 210, 220 to form different angles between the first and second housings 210, 220. In this embodiment, both the first and second housings 210, 220 can rotate relative to the hinge mechanism 230. In other embodiments, only one component on one side can rotate relative to the hinge mechanism 230, such as a door or window. Alternatively, multiple hinge mechanisms 230 can be provided to allow the terminal device 200 to be folded multiple times, such as in a tri-fold mobile phone.

[0054] In this embodiment, the terminal device 200 may further include a flexible screen 240, which is disposed on the surfaces of the first housing 210 and the second housing 220. The first housing 210 and the second housing 220 are rotatably connected via a hinge mechanism 230, enabling the terminal device 200 to switch between an unfolded state and a folded state. In this embodiment, when the terminal device 200 is in the folded state, the flexible screen 240 is located on the outside of the terminal device 200, i.e., the terminal device 200 is an outward-folding mobile phone.

[0055] The flexible screen 240 may include a first area 241, a second area 242 and a third area 243. The third area 243 is located between the first area 241 and the second area 242. The first shell 210 can be used to support the first area 241, the second shell 220 can be used to support the second area 242, and the hinge mechanism 230 can be used to support the third area 243. The third area 243 can be bent along the Y-axis direction.

[0056] The flexible screen 240 can be an organic light-emitting diode (OLED) display, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (AMOLED) display, a mini-organic light-emitting diode (MLED) display, a micro organic light-emitting diode (MLD) display, a micro organic light-emitting diode (MLD) display, a quantum dot light-emitting diode (QLED) display, a liquid crystal display (LCD), etc.

[0057] When the terminal device 200 is in a folded state, the flexible screen 240 is located on the outer surface of the terminal device 200, and the first area 241 and the second area 242 are away from each other, that is, the first area 241 and the second area 242 are located on opposite sides of the terminal device 200, the first shell 210 and the second shell 220 are located between the first area 241 and the second area 242, and the third area 243 is in a bent state. The angle between the first area 241 and the second area 242 on the display side is 360 degrees. When the terminal device 200 gradually unfolds from the folded state, the first shell 210 and the second shell 220 gradually separate, and the angle between the first area 241 and the second area 242 on the display side gradually decreases from 360 degrees. During the unfolding process of the terminal device 200, the first shell 210 and the second shell 220 can be in a hovering state, that is, when no force is applied, the angle between the first shell 210 and the second shell 220 can be relatively stable. When the terminal device 200 is in a flattened state, the first area 241, the second area 242 and the third area 243 can be in the same plane, so that the flexible screen 240 can be unfolded. In this state, the angle between the first area 241 and the second area 242 used for displaying one side is 180°, and the terminal device 200 can achieve a large-screen display. It should be noted that the angles in this embodiment are only for example purposes. In actual applications, assembly tolerances, production errors, etc. are allowed. In other implementations, the terminal device 200 can also be an inward-folding mobile phone, that is, when the terminal device 200 is in a folded state, the first area 241 and the second area 242 are arranged face to face, and the flexible screen 240 is located on the inner side of the terminal device 200.

[0058] See also Figure 4 and Figure 5 , Figure 4 A schematic structural diagram of a damping assembly 100' provided in the related art, Figure 5 for Figure 4 The damping assembly 100' is shown as a cross-sectional schematic diagram along the AA direction. In related art, a hinge mechanism (not shown) typically includes a rotating assembly (not shown) and a damping assembly 100'. When the relevant components of the rotating assembly rotate relative to each other, the damping assembly 100' can position the first housing 210 and the second housing 220 of the terminal device 200 at a relatively stable angle according to actual usage requirements, thereby enabling the terminal device 200 to rotate and hover.

[0059] The damping assembly 100' includes two pins 11, two cams 12, two springs 13, and four damping swing arms 14. The two pins 11 are arranged side by side along the Z-axis, each extending along the Y-axis. The two cams 12 are spaced apart along the Y-axis, with each pin 11 passing through two cams 12. Two springs 13 are arranged side by side, each mounted on a corresponding pin 11 and located between the two cams 12.

[0060] Each damping swing arm 14 includes a cam portion 15 and a swing portion 16. The swing portion 16 is located on one side of the cam portion 15 and is fixedly connected to the cam portion 15. Two of the swing portions 16 are used to connect to the first housing 210, and the other two are used to connect to the second housing 220. Along the Y-axis, two damping swing arms 14 are respectively mounted on one of the pins 11 via their respective cam portions 15. The two cam portions 15 are respectively positioned adjacent to one of the cams 12 and are both located on the side of the cam 12 facing away from one of the springs 13. The other two damping swing arms 14 are respectively mounted on the other pin 11 via their respective cam portions 15. The two cam portions 15 are respectively positioned adjacent to the other cam 12 and are both located on the side of the cam 12 facing away from the other spring 13.

[0061] Specifically, each cam 12 is provided with a groove 121, and the corresponding cam portion 15 is provided with a cam surface 152. Each cam surface 152 contacts the inner wall of the corresponding groove 121. When the first housing 210 rotates relative to the second housing 220, the damping swing arm 14 rotates relative to the cam 12 under the action of the rotating assembly. The relative displacement of the cam surface 152 with respect to the groove 121 causes the cam 12 to move along the Y-axis, which in turn causes the spring 13 to move along the Y-axis (compress or return to its original state), thereby generating damping.

[0062] Damping assembly 100' satisfies the following formula: M = F × r, where F represents the force exerted by spring 13 on cam 12, which in turn exerts its force on cam surface 152; r represents the lever arm, i.e., the distance from the point of application of the force to the center of rotation; and M represents the damping torque of the structure consisting of a spring 13, a cam 12, and two corresponding damping swing arms 14. In related art, the lever arm r is equivalent to the sum of the radius of pin 11 and the wall thickness of cam 12. Due to the miniaturized design of terminal device 200, the installation space reserved for damping assembly 100' is relatively small, resulting in a smaller lever arm r and a correspondingly smaller damping torque M. This means that damping assembly 100' has difficulty meeting the desired damping torque within the relatively small installation space.

[0063] See also Figure 6 、 Figure 7 、 Figure 8 、 Figure 9 and Figure 10 , Figure 6 for Figure 3 The schematic diagram of the exploded structure of the terminal device 200 is shown in FIG. Figure 7 for Figure 6 The exploded view of the rotating shaft mechanism 230 in the terminal device 200 is shown. Figure 8 for Figure 7 The enlarged schematic diagram of a part of the rotating shaft mechanism 230 is shown. Figure 9 for Figure 3 The terminal device 200 is shown as a schematic diagram of an exploded structure in another direction. Figure 10 for Figure 9 The enlarged schematic diagram of area B is shown. The rotating shaft mechanism 230 provided in the embodiment of the present application can achieve a large damping torque in a small installation space.

[0064] See also Figure 6 and Figure 7 The rotating shaft mechanism 230 may include a rotating assembly 260 and a damping assembly 100, and the rotating assembly 260 may include a support plate 262 and a limit member 263. The damping assembly 100 may include a fixed assembly 30, a damping swing arm 40, a first clamping member 50 and a first elastic member 60. Through the interaction between the support plate 262 and the limit member 263, the support plate 262 and the fixed assembly 30 are rotatably connected. The damping swing arm 40 can be driven to rotate relative to the fixed assembly 30 under the action of the rotating assembly 260, and the first clamping member 50 and the first elastic member 60 are accommodated in the fixed assembly 30. When the damping swing arm 40 rotates, the damping swing arm 40 can act on the first clamping member 50, and the first clamping member 50 can further act on the first elastic member 60, thereby providing damping for the terminal device 200.

[0065] Specifically, the support plate 262 is used to connect to the first housing 210, and the ends of the limiting member 263 are rotatably connected to the support plate 262 and the fixing assembly 30, respectively. When a force is applied to the first housing 210, the support plate 262 is driven to rotate, and the rotation of the support plate 262 drives the limiting member 263 to rotate. The limiting member 263 includes a first limiting portion 2632 and a second limiting portion 2634. The first limiting portion 2632 and the second limiting portion 2634 are the two ends of the limiting member 263, and both the first limiting portion 2632 and the second limiting portion 2634 are arc-shaped. The fixing assembly 30 is provided with a first arc-shaped retaining groove (not shown), into which the first retaining portion 2632 is rotatably received. The support plate 262 is provided with a second arc-shaped retaining groove, into which the second retaining portion 2634 is rotatably received. This allows the retaining member 263 to be rotatably connected to both the fixing assembly 30 and the support plate 262, thereby rotatably connecting the support plate 262 to the fixing assembly 30. The rotating shaft mechanism 230 further includes another set of rotating components 260 for enabling rotation of the second housing 220.

[0066] The fixing assembly 30 may include a fixing base 31 and a first fixing cover 33. The first fixing cover 33 and the fixing base 31 are fixedly connected. Methods of fixing include, but are not limited to, nut fixing, snap-fitting, and the like. In some embodiments, the first fixing cover 33 and the fixing base 31 may also be an integral structure. In this embodiment, the first fixing cover 33 and the fixing base 31 are fixed to each other using nuts.

[0067] See also Figure 8 The fixed base 31 defines a first receiving groove 311 and a first rotation groove 314. The first receiving groove 311 and the first rotation groove 314 are arranged along the Y-axis and communicate with each other. The first receiving groove 311 is used to accommodate the first elastic member 60 and the first retaining member 50. The first fixed cover 33 is fixed to the fixed base 31 and covers the first receiving groove 311, thereby retaining the first elastic member 60 and the first retaining member 50 in the first receiving groove 311.

[0068] Please combine Figure 11 、 Figure 12 、 Figure 13 、 Figure 14 、 Figure 15 and Figure 16 , Figure 11 for Figure 1 The terminal device 200 is shown in a folded state, showing a cross-sectional view of the hinge mechanism 230; Figure 12 for Figure 11 A schematic structural diagram of the rotating shaft mechanism 230 is shown; Figure 13 for Figure 2 The terminal device 200 is shown as a schematic cross-sectional view of the rotating shaft mechanism 230 during the unfolding process; Figure 14 for Figure 13 A schematic structural diagram of the rotating shaft mechanism 230 is shown; Figure 15 for Figure 3 The terminal device 200 is shown in a cross-sectional view of the rotating shaft mechanism 230 when the terminal device 200 is in a flattened state; Figure 16 for Figure 15 The structural diagram of the rotating shaft mechanism 230 is shown.

[0069] For details, please refer to Figure 10 and Figure 11 The fixed base 31 includes a first protruding portion 315, which extends along the Y-axis direction into the first rotation groove 314. The first protruding portion 315 includes a first rotation surface 3152 and a first support surface 3154. The first rotation surface 3152 and the first support surface 3154 are arranged approximately along the Z-axis direction, and the first rotation surface 3152 and the first support surface 3154 are connected. The first rotation surface 3152 is an arc surface, and the first rotation surface 3152 is used to determine the axis O extending along the Y-axis direction (such as Figure 15The first support surface 3154 can be a flat surface. The openings at opposite ends of the first rotation slot 314 extend through the first support surface 3154. The first rotation surface 3152 is configured to cooperate with the damping swing arm 40 to achieve a rotational connection between the damping swing arm 40 and the fixed assembly 30. The damping swing arm 40 and the support plate 262 are slidably connected. When the first housing 210 or the second housing 220 rotates relative to the fixed base 31, the support plate 262 is driven to rotate, and the rotation of the support plate 262 drives the damping swing arm 40 to rotate.

[0070] The damping swing arm 40 may include a rotating body 41 and a swinging body 43. The rotating body 41 and the swinging body 43 are fixedly connected, for example, they may be an integral structure. The rotating body 41 is a circular arc-shaped plate-like structure that matches the structure of the first rotating surface 3152. The rotating body 41 is received in the first rotating groove 314 and can rotate relative to the fixed base 31 in the first rotating groove 314 about the axis O defined by the first rotating surface 3152. The swinging body 43 can rotate under the action of the rotating assembly 260, driving the rotating body 41 to rotate synchronously about the axis O.

[0071] The rotating body 41 is a circular arc plate structure, which is equivalent to the rotating body 41 being a partial circular arc structure of a virtual cylindrical structure. Compared with the complete cylindrical structure (such as Figure 5 The cam 12 in the embodiment of the present application can increase the rotation radius of the rotating body 41 in a limited installation space; the arc surface of the first protruding portion 315 can be used to limit the rotation axis O of the rotating body 41. Similarly, compared with the complete cylindrical structure (such as Figure 5 In a limited installation space, the embodiment of the present application can increase the radius of the first protrusion 315. The magnitude of the lever arm R in this embodiment is equivalent to the sum of the radius of the virtual circle defined by the arc surface of the first protrusion 315 and the wall thickness of the rotating body 41. According to the formula of the damping assembly 100, increasing the lever arm R can correspondingly increase the damping torque M.

[0072] In some embodiments, the axis O defined by the first rotating surface 3152 is located outside the first protruding portion 315 , that is, the axis O does not coincide with the first protruding portion 315 . The radius of the virtual circle defined by the arc surface can be further increased, thereby further increasing the damping torque M.

[0073] For details, please refer to Figure 8The rotating body 41 may include a cam surface 412, a first concave surface 414, and a second concave surface 416. The cam surface 412 connects the first concave surface 414 and the second concave surface 416. The first concave surface 414 and the second concave surface 416 are both concave relative to the cam surface 412 along the Y-axis direction. The first concave surface 414 is located on the side of the cam surface 412 away from the swinging body 43, and the second concave surface 416 is located on the side of the cam surface 412 closer to the swinging body 43. The cam surface 412, the first concave surface 414, and the second concave surface 416 can be designed according to damping requirements. For example, they can all be arcuate surfaces, or the cam surface 412 can be a plane, and the first concave surface 414 and the second concave surface 416 can both be arcuate surfaces. In this embodiment, the cam surface 412, the first concave surface 414, and the second concave surface 416 are all arcuate surfaces. The cam surface 412 has a small curvature and is close to a plane; the first concave surface 414 has a small curvature and is inclined relative to the cam surface 412; and the second concave surface 416 is concave to form a stop groove.

[0074] The cam surface 412 and the first recessed surface 414 can be connected by an arcuate surface, and the cam surface 412 and the second recessed surface 416 can be connected by an arcuate surface. The first clamping member 50 and the rotating body 41 are arranged along the Y-axis direction. The cam surface 412, the first recessed surface 414, and the second recessed surface 416 are all used to contact the first clamping member 50. The rotating body 41 can slide relative to the first clamping member 50. When the first clamping member 50 contacts different surfaces among the cam surface 412, the first recessed surface 414, and the second recessed surface 416, the position of the first clamping member 50 along the Y-axis direction can change accordingly, thereby allowing the first clamping member 50 to move along the Y-axis direction as the rotating body 41 rotates.

[0075] The first receiving groove 311 includes a first receiving area 312 and a first moving area 313. The first receiving area 312 and the first moving area 313 are arranged along the Y-axis direction and are connected to each other. The size of the first receiving area 312 along the Z-axis direction is larger than the size of the first moving area 313 along the X-axis direction. Figure 12 The fixed base 31 further includes a first abutting wall 3122 and a second abutting wall 3124, which are spaced apart along the Y-axis. The space between the first abutting wall 3122 and the second abutting wall 3124 defines a first receiving area 312. The first abutting wall 3122 is located near the first movable area 313, while the second abutting wall 3124 is located away from the first movable area 313. One end of the first movable area 313 passes through the first abutting wall 3122, while the other end of the first movable area 313 communicates with the first rotation groove 314. The abutting block 53 can abut against the first abutting wall 3122 or move toward the second abutting wall 3124 to compress the first elastic member 60.

[0076] See Figure 8The first retaining member 50 includes a column 51 and a retaining block 53. The column 51 includes a first end 512 and a second end 514. The first end 512 and the second end 514 are arranged along the Y-axis and connected to each other. The first end 512 is received in the first movable area 313. The first end 512 is used to abut against the cam surface 412, the first recessed surface 414, or the second recessed surface 416, and can slide relative to the cam surface 412, the first recessed surface 414, or the second recessed surface 416. The second end 514 is received in the first receiving area 312. In this embodiment, the first end 512 is arc-shaped to facilitate smooth sliding of the first end 512 relative to the cam surface 412, the first recessed surface 414, or the second recessed surface 416. In other embodiments, the first end 512 may also have other shapes, such as a square or a diamond. The abutment block 53 is located on the outer periphery of the column 51 and surrounds the column 51. The abutment block 53 is located at the connection between the first end 512 and the second end 514 and is fixedly connected to the column 51. In this embodiment, the abutment block 53 and the column 51 are integrally formed. In other embodiments, the abutment block 53 and the column 51 can also be fixedly connected by other connection methods, such as welding, bonding, etc.

[0077] In this embodiment, the first elastic member 60 is a spring. In other embodiments, the first elastic member 60 can also be made of other elastic materials, or other elastic members with elastic structures. The first elastic member 60 is sleeved around the periphery of the first end 512 and is located in the first receiving area 312. The second end 514 is located inside the first elastic member 60. The first end 512 and the abutting block 53 are located outside the first elastic member 60. One end of the first elastic member 60 abuts against the side of the abutting block 53 facing the second end 514, and the other end of the first elastic member 60 abuts against the second abutting wall 3124. The first holding member 50 can move relative to the first elastic member 60 along the Y-axis direction, so that the first elastic member 60 is deformed along the Y-axis direction.

[0078] See also Figure 11 and Figure 12 When the terminal device 200 is in the folded state, the first end 512 abuts against the first concave surface 414, the abutting block 53 can abut against the first abutting wall 3122, and the second end 514 and the second abutting wall 3124 are spaced apart to reserve space for the abutting block 53 to move along the Y-axis direction. The first elastic member 60 can be in a compressed state. Figure 13 and Figure 14 When the terminal device 200 is transformed from the folded state to the flattened state, the first end 512 gradually slides from abutting against the first concave surface 414 to abutting against the cam surface 412, so that the column 51 moves along the Y-axis direction toward the first elastic member 60 and compresses the first elastic member 60. Figure 15 and Figure 16When the terminal device 200 is flattened, the first end 512 gradually slides from abutting against the cam surface 412 to abut against the second recessed surface 416, causing the column 51 to move along the Y-axis in a direction away from the first elastic member 60, and the first elastic member 60 gradually recovers its deformation. When the terminal device 200 is flattened and folded, the relevant components operate in the opposite manner, which will not be further described here.

[0079] Please refer again Figure 10 In this embodiment, the fixed base 31 further includes a second protrusion 316, which extends along the Y-axis toward the first protrusion 315 into the first rotation groove 314. The second protrusion 316 includes a second rotation surface (not shown). The second rotation surface is an arc surface, and the axis O defined by the second rotation surface is the same as the axis O defined by the first rotation surface 3152. The rotating body 41 also cooperates with the second rotation surface. That is, the two sides of the damping swing arm 40 along the Y-axis direction interact with the arc surface of the first protrusion 315 and the arc surface of the second protrusion 316, respectively, which helps improve the balance and stability of the rotation of the damping swing arm 40.

[0080] When the damping assembly 100 is applied to a specific terminal device 200, the number of damping assemblies 100 can be one or more. Multiple damping assemblies 100 can share a fixed base 31, and corresponding rotation grooves and receiving grooves need to be provided respectively. In this embodiment, the number of damping assemblies 100 is an even number, and some damping assemblies 100 are used to provide damping for the first shell 210, and the remaining damping assemblies 100 are used to provide damping for the second shell 220, which is beneficial for maintaining the balance of damping experienced by the first shell 210 and the second shell 220. The damping assemblies 100 that provide damping for the first shell 210 and the second shell 220 can be staggered along the X-axis direction, which is beneficial for reducing the thickness of the terminal device 200 when it is in the folded state.

[0081] See also Figure 17 and Figure 18 , Figure 17 Schematic diagram of a partial area of ​​a damping assembly 100a provided in some other embodiments of the present application. Figure 18 for Figure 17 The damping assembly 100a is shown in another structural diagram. Figures 6 to 16The damping assembly 100 shown, particularly the damping assembly 100a provided in this embodiment, has a symmetrical structure along a direction perpendicular to the Y-axis. Specifically, the fixed base 31a in the damping assembly 100a may further include a third protrusion 317 extending along the Y-axis toward the first protrusion 315. The third protrusion 317 includes a third rotational surface (not shown), which is a circular arc surface. The axis O defined by the third rotational surface is the same as the axis O defined by the first rotational surface 3152. The damping assembly 100a may also include a second elastic member 80 and a second retaining member 70, the second retaining member 70 being configured to abut against the second elastic member 80. Cam surfaces 412, first recessed surfaces 414, and second recessed surfaces 416 are provided on opposite sides of the damping swing arm 40a along the Y-axis, interacting with the first retaining member 50 and the second retaining member 70, respectively. A second receiving groove 318 can be correspondingly defined on the fixed base 31a. The second receiving groove 318 communicates with the first rotation groove 314 along the Y-axis and is located on the side of the first rotation groove 314 facing away from the first receiving groove 311. The second elastic member 80 and the second retaining member 70 are received in the second receiving groove 318. The structure of the second receiving groove 318 can be identical to that of the first receiving groove 311. The damping swing arm 40a also cooperates with the third rotation surface. The damping swing arm 40a is further configured to rotate about the axis O and act on the second retaining member 70 along the Y-axis. The second retaining member 70 is configured to act on the second elastic member 80 along the Y-axis. In this embodiment, the damping structure is provided on both sides of the same damping swing arm 40a. The opposite sides of the same damping swing arm 40a act on the first elastic member 60 and the second elastic member 80, respectively. This facilitates improving the damping of the damping assembly 100a and the balance and stability of the damping swing arm 40a during rotation.

[0082] See also Figure 19 and Figure 20 , Figure 19 This is a structural diagram of a partial area of ​​a damping assembly 100b provided in some embodiments of the present application. Figure 20 for Figure 19 The damping assembly 100b is shown in another structural diagram. Figure 17 and Figure 18 In the damping assembly 100a shown, the number of the first elastic member 60 and / or the second elastic member 80 in the damping assembly 100b of this embodiment is not limited to one, but can also be at least two. At least two first elastic members 60 can be arranged side by side along the X-axis direction, and at least two second elastic members 80 can be arranged side by side along the X-axis direction. Figure 19 and Figure 20 In the damping assembly 100 b shown, there are two first elastic members 60 and two second elastic members 80 .

[0083] The first retaining member 50b includes two first ends 512b and a second end 514. The two first ends 512b are arranged side by side along the X-axis, and each first elastic member 60 is mounted on one of the first ends 512b. In other words, the number of first ends 512b is the same as the number of first elastic members 60. The second retaining member 70b also includes the same number of first ends (not shown) as the number of second elastic members 80. Each second elastic member 80 is mounted on one of the first ends. Increasing the number of first elastic members 60 and / or second elastic members 80 helps improve the damping of the damping assembly 100b.

[0084] The above embodiments are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred embodiments, those skilled in the art should understand that modifications or equivalent replacements of the technical solutions of the present application should not depart from the spirit and scope of the technical solutions of the present application.

Claims

1. A damping assembly, characterized in that: include: The fixing assembly includes a first protruding portion, the first protruding portion includes a first rotating surface, the first rotating surface is an arc surface, and the first rotating surface is used to determine an axis extending along a first direction; a first elastic member; A first holding member is held against the first elastic member; and A damping swing arm cooperates with the first rotating surface, the damping swing arm is used to rotate around the axis and act on the first clamping member along the first direction, and the first clamping member is used to act on the first elastic member along the first direction.

2. The damping assembly according to claim 1, characterized in that The fixing assembly includes a fixing base, and the fixing base includes the first protrusion; the fixing base is provided with a first receiving groove and a first rotation groove, and the first receiving groove and the first rotation groove are connected to each other; the first elastic member and the first clamping member are both accommodated in the first receiving groove; the damping swing arm includes a rotating body, and the rotating body cooperates with the first rotating surface, and the rotating body and the first protrusion are both accommodated in the first rotation groove, and the rotating body abuts against the first clamping member.

3. The damping assembly according to claim 2, characterized in that The first holding member includes a column and a supporting block, the column includes a first end and a second end, the first end and the second end are arranged along the first direction and connected to each other, the supporting block is located at the connection between the first end and the second end and surrounds the column, the first elastic member is sleeved on the outer periphery of the first end, and the second end is supported by the rotating body.

4. The damping assembly according to claim 3, characterized in that The first rotating groove includes a first receiving area and a first moving area, which are arranged along the first direction and are connected to each other; the first elastic member and the first end are received in the first receiving area, and the second end is received in the first moving area.

5. The damping assembly according to claim 4, characterized in that The fixed base also includes a first abutting wall and a second abutting wall, the first abutting wall and the second abutting wall are spaced apart along the first direction, the space between the first abutting wall and the second abutting wall is the first receiving area, the first abutting wall is located on the side close to the first moving area, and the second abutting wall is located on the side away from the first moving area, one end of the first moving area passes through the first abutting wall, and the other end of the first moving area is connected to the first rotation groove; the abutting block can abut against the first abutting wall or move toward the second abutting wall.

6. The damping assembly according to claim 5, characterized in that The rotating body includes a cam surface, a first concave surface and a second concave surface, the cam surface connects the first concave surface and the second concave surface, and the first concave surface and the second concave surface are both concave relative to the cam surface along the first direction; when the second end abuts against the first concave surface or the second concave surface, the abutting block is spaced apart from the first abutting wall, and when the second end abuts against the second concave surface, the abutting block compresses the first elastic member.

7. The damping assembly according to any one of claims 2 to 6, characterized in that: The fixed base also includes a second protrusion, which extends along the first direction toward the first protrusion; the second protrusion includes a second rotating surface, which is an arc surface, and the axis determined by the second rotating surface is the same as the axis determined by the first rotating surface, and the rotating body also cooperates with the second rotating surface.

8. The damping assembly according to any one of claims 2 to 6, characterized in that: The damping assembly includes at least two first elastic members, the column includes at least two first ends, at least two first ends are arranged side by side along a second direction, the second direction intersects with the first direction, and each first elastic member is sleeved on one of the first ends.

9. The damping assembly according to any one of claims 1 to 6, characterized in that: The fixing assembly further includes a third protruding portion, the third protruding portion extending along the first direction toward the first protruding portion; the third protruding portion includes a third rotating surface, the third rotating surface is an arc surface, and the axis defined by the third rotating surface is the same as the axis defined by the first rotating surface; The damping assembly also includes a second elastic member and a second clamping member, the second clamping member is abutted against the second elastic member, the damping swing arm also cooperates with the third rotating surface, the damping swing arm is also used to rotate around the axis and act on the second clamping member along the first direction, and the second clamping member is used to act on the second elastic member along the first direction.

10. A terminal device, characterized in that: The damping assembly comprises the damping assembly according to any one of claims 1 to 9.

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