Torsion assembly, folding device and intelligent terminal

Abstract

The application provides a torsion assembly, a folding device and a smart terminal. The torsion assembly comprises a fixing unit, a rotating part and a sliding part. The fixing unit comprises at least two fixing shafts arranged at intervals. The rotating part is rotationally connected to the fixing shafts and rotates on opposite sides of the fixing shafts. The sliding part is arranged to slide along the axial direction of the fixing shafts. The sliding part elastically abuts against the rotating part. The position where the sliding part contacts the rotating part is provided with a cam cooperation structure. The cam cooperation structure is configured to gradually move the rotating part and the sliding part away from each other along the axial direction of the fixing shafts when the included angle between the two rotating parts gradually increases from 0° to a preset angle. The application solves the technical problem that the hovering effect is poor when the opening angle of the two bodies of the smart terminal is large.

Description

Technical Field

[0001] This application relates to the field of electronic equipment technology, specifically to a torsion assembly, a folding device, and a smart terminal. Background Technology

[0002] In foldable screen phones, tablets and other smart terminal devices, the design of the folding mechanism is crucial because it directly affects the durability and user experience of the smart terminal device. In order to maintain the stability of the smart terminal device in the closed state, the folding mechanism needs to overcome the outward tension of the flexible screen itself. For this purpose, a torsion component is usually set up to counteract the tension of the flexible screen and maintain the stability of the closed state.

[0003] In some solutions, the torque component provides an unfolding self-locking force when the smart terminal is in the unfolded state and a closing self-locking force when the smart terminal is in the closed state, thereby preventing the two bodies of the smart terminal from accidentally folding due to external disturbances during use. In the process of conceiving and implementing this application, it was found that some smart terminals have at least the following problems: when the opening angle of the two bodies of the smart terminal is large but not fully unfolded, the hovering effect is poor, affecting the stability of use.

[0004] The preceding description is intended to provide general background information and does not necessarily constitute prior art. Utility Model Content

[0005] To address the aforementioned technical problems, this application provides a torque component, a folding device, and a smart terminal, which solves the technical problem of poor hovering performance when the two bodies of the smart terminal open at a large angle.

[0006] To address the aforementioned technical problems, this application provides a torque assembly, comprising:

[0007] The fixing unit includes at least two fixing shafts spaced apart.

[0008] A rotating component, which is rotatably connected to the fixed shaft and rotates on opposite sides of the fixed shaft;

[0009] A sliding member is provided, which is slidably disposed along the axial direction of the fixed shaft. The sliding member elastically abuts against the rotating member, and a cam engagement structure is provided at the position where the sliding member contacts the rotating member.

[0010] The cam engagement structure is configured such that, as the included angle between the two rotating members gradually increases from 0° to a preset angle, the rotating member and the sliding member gradually move away from each other along the axial direction of the fixed shaft.

[0011] The present invention provides a torque component in which the sliding member elastically abuts against the rotating member, and a cam engagement structure is provided at the contact position between the sliding member and the rotating member. As the included angle between the two rotating members gradually increases from ° to a preset angle, the rotating member and the sliding member gradually move away from each other along the axial direction of the fixed shaft. This increases the elastic force between the sliding member and the rotating member as the included angle between the two rotating members gradually increases from 0° to the preset angle, thereby enhancing the torque generated by friction during the rotation of the rotating member relative to the sliding member. This helps to improve the hovering effect of the smart terminal and ensures that the smart terminal maintains a stable opening angle when the opening angle is large.

[0012] This application provides a torque component that, through a cam-assisted structure, increases the frictional resistance between the sliding component and the rotating component during the opening of the smart terminal. This provides sufficient resistance to impede the relative movement between the rotating and sliding components, thereby increasing the torque driving the rotating component. This allows the smart terminal to stably maintain its position when opened to a certain angle, reducing the phenomenon of easy closing or continued opening due to gravity or other external forces. It maintains stability when opened to a specific angle, achieving a hovering effect. Compared to existing structures, the hovering angle is increased by 20° to 30°, improving user experience and device usability.

[0013] Optionally, the cam engagement structure includes:

[0014] A first cam portion is disposed on the rotating member. The first cam portion includes at least two first protrusions and at least two first grooves arranged at intervals around the rotation center axis of the rotating member. One side edge of the first protrusion has a first mating surface.

[0015] The second cam portion is disposed on the slider. The second cam portion includes at least two second protrusions and at least two second grooves arranged at intervals around the rotation center axis of the rotating member. One side edge of the second protrusion has a first guide surface.

[0016] As the included angle between the two rotating parts gradually increases from 0° to the preset angle, the first mating surface moves along the first guide surface to contact the top surface of the second protrusion.

[0017] Optionally, the torque assembly further includes a synchronizing gear set rotatably disposed on the fixed unit. The rotating component includes a rotating body and an extension arm connected to the side wall of the rotating body. The synchronizing gear set is located between the two rotating bodies. The outer peripheral surface of the rotating body is provided with a gear portion, and the synchronizing gear set meshes with the gear portions of the two rotating bodies.

[0018] Optionally, the synchronous gear set includes a first transmission gear and a second transmission gear that mesh with each other, and the first transmission gear and the second transmission gear respectively mesh with the gear parts of the two rotating bodies;

[0019] At least one of the first transmission gear and the second transmission gear is an incomplete gear. The incomplete gear includes a first hub, a first transmission tooth portion and a second transmission tooth portion. The first transmission tooth portion and the second transmission tooth portion are spaced apart on the outer peripheral surface of the first hub, and there is a gap between the first transmission tooth portion and the second transmission tooth portion.

[0020] Optionally, the first transmission gear is the incomplete gear, the first transmission tooth portion of the first transmission gear meshes with the second transmission gear, and the second transmission tooth portion meshes with the gear portion of the rotating body;

[0021] When the torque assembly is in a flattened state, the interval area is located at both ends of the torque assembly in the thickness direction.

[0022] Optionally, the module m1 of the first transmission tooth and the module m2 of the gear satisfy the condition: m1≤m2.

[0023] Optionally, a separator block is provided within the interval area.

[0024] Optionally, the fixing unit further includes a base, with both ends of the fixing shaft disposed on the base, and a first elastic element sleeved on the fixing shaft, with both ends of the first elastic element abutting against the sliding element and the base respectively.

[0025] This application also provides a folding device, including a swing arm and the aforementioned torque assembly, wherein the swing arm is rotatably disposed on the fixed unit of the torque assembly, and the swing arm is slidably connected to the rotating part of the torque assembly.

[0026] This application also provides a smart terminal, including the torsion component described above; or, including the folding device described above.

[0027] This application provides a torque assembly, a folding device, and a smart terminal, wherein at least one of the first and second transmission gears is an incomplete gear. This structure effectively solves the problem of excessive thickness space occupied by asymmetrical tooth profiles during meshing, reducing the overall height of the meshing first and second transmission gears. This allows the thickness of the torque assembly in its flattened state to be reduced by 0.4 mm, contributing to the thinner and lighter development of smart terminals.

[0028] In addition to the technical problems solved by the embodiments of this application, the technical features constituting the technical solutions, and the beneficial effects brought about by the technical features of these technical solutions described above, other technical problems that can be solved by a torque component, folding device, and smart terminal provided by the embodiments of this application, other technical features included in the technical solutions, and the beneficial effects brought about by these technical features will be further described in detail in the specific embodiments. Attached Figure Description

[0029] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. To more clearly illustrate the technical solutions of the embodiments of this application, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, those skilled in the art can obtain other drawings based on these drawings without any creative effort.

[0030] Figure 1 A schematic diagram of the gear engagement structure of the synchronous gear set in an existing torque assembly;

[0031] Figure 2 A three-dimensional structural schematic diagram of the torque component provided in the embodiments of this application;

[0032] Figure 3 An exploded view of the torque assembly provided in the embodiments of this application;

[0033] Figure 4 A schematic diagram of the cam engagement structure of the torque assembly provided in this application embodiment, in which the included angle between the two rotating parts is 0°;

[0034] Figure 5 A schematic diagram of the cam engagement structure of the torque assembly provided in this application embodiment, wherein the included angle between the two rotating parts is 90°.

[0035] Figure 6 A schematic diagram of the cam engagement structure of the torque assembly provided in this application embodiment, where the included angle between the two rotating parts is 180°.

[0036] Figure 7 This is a partial unfolded view of the cam engagement structure of the torque component provided in the embodiments of this application;

[0037] Figure 8 A cross-sectional view of the torque assembly provided in an embodiment of this application at the location of the synchronizing gear set;

[0038] Figure 9 This is a schematic diagram of the structure of the torque component in the synchronous gear set provided in the embodiments of this application;

[0039] Figure 10 This is a schematic diagram of the hardware structure of a mobile terminal provided in an embodiment of this application.

[0040] Explanation of reference numerals in the attached figures:

[0041] 10-Fixed unit; 11-Fixed shaft; 12-Base; 121-Gear shaft;

[0042] 20-Rotating component; 21-First cam portion; 211-First protrusion; 212-First groove; 213-First mating surface; 22-Rotating body; 221-Gear portion; 23-Extension arm;

[0043] 30 - Slider; 31 - Second cam portion; 311 - Second protrusion; 312 - Second groove; 313 - First guide surface;

[0044] 40 - Synchronous gear set; 41 - First transmission gear; 411 - First hub; 412 - First transmission gear; 413 - Second transmission gear; 414 - Spacing area; 415 - Separator block; 42 - Second transmission gear; 43 - Existing gear;

[0045] 50 - First elastic element;

[0046] 500 - Mobile terminal; 501 - Radio frequency unit; 502 - WiFi module; 503 - Audio output unit; 504 - A / V input unit; 5041 - Graphics processor; 5042 - Microphone; 505 - Sensor; 506 - Display unit; 5061 - Display panel; 507 - User input unit; 5071 - Touch panel; 5072 - Other input devices; 508 - Interface unit; 509 - Memory; 510 - Processor; 511 - Power supply.

[0047] The realization of the objectives, functional features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. The accompanying drawings have illustrated specific embodiments of this application, which will be described in more detail below. These drawings and textual descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concepts of this application to those skilled in the art through reference to specific embodiments. Detailed Implementation

[0048] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0049] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element. Furthermore, components, features, and elements with the same names in different embodiments of this application may have the same meaning or different meanings, the specific meaning of which must be determined by its interpretation in that specific embodiment or further in conjunction with the context of that specific embodiment.

[0050] It should be understood that although the terms first, second, third, etc., may be used herein to describe various information, such information should not be limited to these terms. These terms are used only to distinguish information of the same type from one another. For example, without departing from the scope of this document, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Depending on the context, the word "if," as used herein, may be interpreted as "when," "when," or "in response to determination." Furthermore, as used herein, the singular forms "a," "an," and "the" are intended to also include the plural forms, unless the context indicates otherwise. It should be further understood that the terms "comprising," "including," indicate the presence of the foregoing features, steps, operations, elements, components, items, kinds, and / or groups, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, components, items, kinds, and / or groups. The terms "or," "and / or," "including at least one of the following," etc., as used in this application, may be interpreted as inclusive, or mean any one or any combination thereof. For example, "including at least one of the following: A, B, C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Similarly, "A, B, or C" or "A, B, and / or C" means "any one of the following: A; B; C; A and B; A and C; B and C; A and B and C." Exceptions to this definition only occur when the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0051] It should be understood that although the steps in the flowcharts of this application's embodiments are shown sequentially according to the arrows, these steps are not necessarily executed in the order indicated by the arrows. Unless explicitly stated herein, there is no strict order restriction on the execution of these steps, and they can be executed in other orders. Moreover, at least some of the steps in the figures may include multiple sub-steps or multiple stages. These sub-steps or stages are not necessarily completed at the same time, but can be executed at different times, and their execution order is not necessarily sequential, but can be performed alternately or in turn with other steps or at least a portion of the sub-steps or stages of other steps.

[0052] Depending on the context, the words “if” or “suppose” as used here can be interpreted as “when” or “in response to determination” or “in response to detection.” Similarly, depending on the context, the phrases “if determination” or “if detection (of the stated condition or event)” can be interpreted as “when determination” or “in response to determination” or “when detection (of the stated condition or event)” or “in response to detection (of the stated condition or event).”

[0053] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0054] In the following description, the use of suffixes such as "module," "part," or "unit" to denote elements is solely for the purpose of illustrative purposes and has no specific meaning in itself. Therefore, "module," "part," or "unit" may be used interchangeably.

[0055] In related technologies, in cam-fitting structures, three or four sets of cams typically make alternating contact. The torque component can only provide a small torque angle range, which can easily lead to problems with the inability to hover when the opening angle of the smart terminal is large.

[0056] In addition, refer to Figure 1 As shown, in the existing torque assembly's synchronous gear set, when the torque assembly is in a flattened state, the existing gears 43 have asymmetrical tooth profiles, causing the highest points of the tooth profiles of the two meshing existing gears 43 to be on different horizontal planes, and the lowest points of the tooth profiles are also not on the same horizontal plane. (Refer to...) Figure 1 As shown, there is a height difference H1 between the highest points of the tooth profiles of the two existing gears 43, and a height difference H2 between the lowest points of the tooth profiles of the two existing gears 43. H1 and H2 are approximately 0.2 mm, resulting in the existing gear structure occupying a large thickness space.

[0057] In view of this, the torque component provided in this application, through a cam-coordinated structure, increases the frictional resistance generated by the sliding component on the rotating component during the opening of the smart terminal. This provides sufficient resistance to hinder the relative movement between the rotating component and the sliding component, thereby increasing the torque driving the rotating component. This allows the smart terminal to stably maintain its position when opened to a certain angle, reducing the phenomenon of easy closing or continued opening due to gravity or other external forces. It maintains stability when opened to a specific angle, achieving a hovering effect. Compared with existing structures, the hovering angle is increased by 20° to 30°, improving the user experience and the practicality of the device.

[0058] The torque assembly provided in this application reduces the thickness space occupied by the incomplete gear when the torque assembly is in a flattened state. This allows the thickness of the torque assembly in the flattened state to be reduced by about 0.4mm, which helps to realize the development of thinner and lighter smart terminals. It can not only improve the portability of smart terminals, but also free up more installation space for other components inside the smart terminal.

[0059] The following description, with reference to the accompanying drawings, describes an embodiment of a torque assembly, a folding device, and a smart terminal provided in this application.

[0060] refer to Figure 2 and Figure 3 As shown, this utility model provides a torque assembly, including: a fixed unit 10, a rotating member 20, and a sliding member 30. The fixed unit 10 includes at least two fixed shafts 11 spaced apart. The rotating member 20 is rotatably connected to the fixed shafts 11 and rotates on opposite sides of the fixed shafts 11. The sliding member 30 is slidably disposed along the axial direction of the fixed shafts 11, and the sliding member 30 elastically abuts against the rotating member 20. A cam engagement structure is provided at the contact position between the sliding member 30 and the rotating member 20.

[0061] The cam engagement structure is configured such that as the included angle between the two rotating members 20 gradually increases from 0° to a preset angle, the rotating member 20 and the sliding member 30 move away from each other along the axial direction of the fixed shaft 11, with the preset angle being 130° to 150°.

[0062] The present invention provides a torque component in which the sliding member 30 elastically abuts against the rotating member 20. A cam engagement structure is provided at the contact position between the sliding member 30 and the rotating member 20. As the included angle between the two rotating members 20 gradually increases from 0° to a preset angle, the rotating member 20 and the sliding member 30 gradually move away from each other along the axial direction of the fixed shaft 11. This increases the elastic force between the sliding member 30 and the rotating member 20 as the included angle between the two rotating members 20 gradually increases from 0° to the preset angle. This enhances the torque generated by friction during the rotation of the rotating member 20 relative to the sliding member 30, which helps to improve the hovering effect of the smart terminal and ensures that the smart terminal maintains a stable opening angle when the opening angle is large.

[0063] The torque component provided in this application, through a cam-coordinated structure, increases the frictional resistance generated by the slider 30 on the rotating component 20 during the opening of the smart terminal. This provides sufficient resistance to hinder the relative movement between the rotating component 20 and the slider 30, thereby increasing the torque driving the rotating component 20. This allows the smart terminal to stably maintain its position when opened to a certain angle, reducing the phenomenon of easy closing or continued opening due to gravity or other external forces. It maintains stability when opened to a specific angle, achieving a hovering effect. Compared with existing structures, the hovering angle is increased by 20° to 30°, improving the user experience and the practicality of the device.

[0064] In one possible implementation, the preset angle can be, for example, 130°, 135°, 138°, 140°, 145° or 150°.

[0065] In one possible implementation, the fixing unit 10 further includes a base 12 for fixing the fixing shaft 11, the base 12 having a through hole for the fixing shaft 11 to pass through, so as to fix the fixing shaft 11 to the base 12.

[0066] The sliding member 30 can slide along the axial direction of the fixed shaft 11 and cannot rotate. In order to prevent the sliding member 30 from rotating, there are two fixed shafts 11, which are arranged in parallel. The sliding member 30 is sleeved on the two fixed shafts 11, so that the sliding member 30 can slide along the axial direction of the fixed shaft 11 and cannot rotate.

[0067] In one possible implementation, rotating members 20 are rotatably mounted on both fixed shafts 11, and the two rotating members 20 rotate about the central axes of the two fixed shafts 11. A sliding member 30 maintains contact with both rotating members 20, and a cam engagement structure is provided at each contact point between the rotating member 20 and the sliding member 30.

[0068] The two rotating parts 20 rotate relative to each other on opposite sides of the two fixed shafts 11, that is, the rotating parts 20 on the two fixed shafts 11 move closer to each other or move further away from each other.

[0069] In one possible implementation method, refer to Figure 4 , Figure 5 and Figure 6 As shown, the cam-fitting structure includes: a first cam portion 21 and a second cam portion 31, referenced. Figure 3 , Figure 5 and Figure 6 As shown, a first cam portion 21 is disposed on the rotating member 20. The first cam portion 21 includes at least two first protrusions 211 and at least two first grooves 212 arranged at intervals around the rotation center axis of the rotating member 20. One side edge of the first protrusion 211 has a first mating surface 213. A second cam portion 31 is disposed on the sliding member 30. The second cam portion 31 includes at least two second protrusions 311 and at least two second grooves 312 arranged at intervals around the rotation center axis of the rotating member 20. One side edge of the second protrusion 311 has a first guiding surface 313.

[0070] refer to Figure 4 , Figure 5 and Figure 6 As shown, during the process of the included angle between the two rotating parts 20 gradually increasing from 0° to the preset angle, the first mating surface 213 moves along the first guide surface 313 to contact the top surface of the second protrusion 311.

[0071] When the torque assembly is in the closed state, the first protrusion 211 is embedded in the second groove 312, and the second protrusion 311 is embedded in the first groove 212. This engagement provides initial stability and prevents the torque assembly from opening on its own without being subjected to force.

[0072] As the torque assembly gradually opens, that is, as the included angle between the two rotating parts 20 gradually increases from 0° to 180°, reference Figure 7 As shown, the rotating member 20 rotates along the direction indicated by the +X axis, and the first mating surface 213 moves along the first guide surface 313, exhibiting a climbing state. This causes the friction to gradually increase, requiring a larger torque to continue opening the torque assembly. When the included angle between the two rotating members 20 reaches 180°, the first mating surface 213 disengages from the first guide surface 313, and the tip of the first protrusion 211 contacts the tip surface of the second protrusion 311. This contact provides a new stable state, ensuring that the torque assembly remains stable when fully open and will not easily close due to external forces. Therefore, during the unfolding process of the torque assembly, the gradually increasing resistance and torque between the first cam portion 21 and the second cam portion 31 of the cam-fit structure ensure the stability of the torque assembly at different angles.

[0073] In this application, through the geometry and interaction of the first cam portion 21 and the second cam portion 31, the torque can be gradually increased and adjusted during the rotation of the rotating member 20, thereby ensuring the hovering effect of the smart terminal.

[0074] refer to Figure 4 , Figure 5 and Figure 6 As shown, one side edge of the first protrusion 211 has a first mating surface 213, which is an inclined surface. One side edge of the second protrusion 311 has a first guiding surface 313, which is also an inclined surface. The first guiding surface 313 and the first mating surface 213 are mated together.

[0075] As the angle between the two rotating parts 20 gradually increases from 0° to the preset angle, the first mating surface 213 moves along the first guide surface 313, exhibiting an uphill motion. Through the interaction between the first mating surface 213 and the first guide surface 313, the friction between the first mating surface 213 and the first guide surface 313 gradually increases, and the torque required to drive the rotating part 20 to rotate is greater, which helps to improve the stability of the angle between the two rotating parts 20, so that the angle between the two rotating parts 20 can be maintained stably within the preset angle. This not only provides a stable opening and closing experience, but also enables the smart terminal to provide a hovering function at a specific angle.

[0076] refer to Figure 2 and Figure 3 As shown, when the top of the first protrusion 211 contacts the top surface of the second protrusion 311, the space occupied by the sliding member 30 and the rotating member 20 in the circumferential direction of the fixed shaft 11 is large, so that the elastic compressive force between the sliding member 30 and the rotating member 20 is the maximum. Under the action of this elastic force, the rotating member 20 and the sliding member 30 are stably maintained in the open state.

[0077] In one possible implementation method, refer to Figure 2 , Figure 3 and Figure 8 As shown, the torque assembly also includes a synchronous gear set 40, which is rotatably mounted on the fixed unit 10. The rotating component 20 includes a rotating body 22 and an extension arm 23 connected to the side wall of the rotating body 22. The synchronous gear set 40 is located between the two rotating bodies 22. A gear portion 221 is provided on the outer peripheral surface of the rotating body 22. The synchronous gear set 40 meshes with the gear portions 221 of the two rotating bodies 22.

[0078] By setting a synchronous gear set 40, the two rotating parts 20 can maintain synchronous movement. When one rotating part 20 rotates, the other rotating part 20 also rotates relative to it at the same speed, thereby achieving precise synchronous movement between the two rotating parts 20, which helps to improve the efficiency of opening and folding of smart terminals.

[0079] In one possible implementation, the rotating body 22 is mounted on the fixed shaft 11, and the rotating bodies 22 of the two rotating parts 20 rotate relative to each other.

[0080] In one possible implementation, the rotating body 22 and the extension arm 23 can be an integrally connected structure to ensure the structural strength of the rotating component 20 itself.

[0081] In one possible implementation, the synchronizing gear set 40 includes a first transmission gear 41 and a second transmission gear 42 that mesh with each other, the first transmission gear 41 and the second transmission gear 42 respectively meshing with the gear portions 221 of the two rotating bodies 22; at least one of the first transmission gear 41 and the second transmission gear 42 is an incomplete gear.

[0082] In one possible implementation, the first transmission gear 41 is an incomplete gear and the second transmission gear 42 is a complete gear; or, the first transmission gear 41 is a complete gear and the second transmission gear 42 is an incomplete gear; of course, it is also possible that both the first transmission gear 41 and the second transmission gear 42 are incomplete gears.

[0083] An incomplete gear refers to a gear whose teeth are set on only a portion of its circumferential surface for meshing, while another portion of the surface may be smooth or toothless. This design allows the incomplete gear to transmit motion or torque within a specific angular range, while not transmitting it within other angular ranges. A complete gear refers to a gear whose entire circumferential surface is set with teeth, and the entire outer circumference of the gear participates in meshing.

[0084] In one possible implementation, in order to install the first transmission gear 41 and the second transmission gear 42, a gear shaft 121 is also connected to the base 12, and the gear shaft 121 is arranged parallel to the fixed shaft 11.

[0085] In one possible implementation, there may be two gear shafts 121, which are arranged at intervals between two fixed shafts 11, with the first transmission gear 41 and the second transmission gear 42 rotatably mounted on the two gear shafts 121 respectively.

[0086] In one possible implementation method, refer to Figure 3 and Figure 9As shown, the incomplete gear includes a first hub 411, a first transmission tooth 412 and a second transmission tooth 413. The first transmission tooth 412 and the second transmission tooth 413 are spaced apart on the outer peripheral surface of the first hub 411, and there is a gap 414 between the first transmission tooth 412 and the second transmission tooth 413.

[0087] The first transmission gear 41 is an incomplete gear. The first transmission tooth 412 of the first transmission gear 41 meshes with the second transmission gear 42, and the second transmission tooth 413 meshes with the gear part 221 of the rotating body 22. Power transmission is achieved through the meshing of the first transmission tooth 412 and the second transmission gear 42, and the meshing of the second transmission tooth 413 with the gear part 221 of the rotating body 22.

[0088] When the torque assembly is in the flattened state, the gap 414 is located at both ends of the torque assembly in the thickness direction. This structure reduces the thickness space occupied by the incomplete gears when the torque assembly is in the flattened state, effectively solving the problem of large thickness space occupied by asymmetrical tooth profiles during meshing. It also reduces the total height of the meshing first transmission gear 41 and second transmission gear 42, allowing the thickness of the torque assembly in the flattened state to be reduced by 0.4mm. This contributes to the development of thinner and lighter smart terminals, not only improving the portability of smart terminals but also freeing up more installation space for other components inside the smart terminal.

[0089] When the first transmission gear 41 is an incomplete gear and the second transmission gear 42 is a complete or incomplete gear, when one of the two rotating members 20 rotates around the fixed shaft 11, the gear portion 221 of the rotating member 20 meshes with the second transmission gear portion 413, driving the first transmission gear 41 to rotate. When the first transmission gear 41 rotates, the first transmission gear portion 412 of the first transmission gear 41 meshes with the second transmission gear 42, causing the second transmission gear 42 to rotate. Through the meshing of the second transmission gear 42 with the gear portion 221 of the other rotating member 20, the rotation of the other rotating member 20 is realized, thereby making the two rotating members 20 rotate synchronously.

[0090] In one possible implementation, the first hub 411, the first transmission gear 412, and the second transmission gear 413 can be an integrally formed structure. The first hub 411 provides the axis of rotation for the incomplete gear, and the first hub 411 can be annular in shape.

[0091] In one possible implementation, the first transmission gear 412 includes at least two teeth, the second transmission gear 413 includes at least two teeth, the interval 414 separates the first transmission gear 412 and the second transmission gear 413 from each other, the first hub 411 has a smooth arc surface on the outer wall of the interval 414, and no teeth are arranged in the interval 414.

[0092] In one possible implementation, the module m1 of the first transmission tooth 412 and the module m2 of the gear 221 satisfy: m1≤m2.

[0093] The module is an important parameter in gear design. The larger the module of a gear, the larger the gear teeth. This application optimizes the module of the incomplete gear so that the modules of the meshing second transmission gear 413 and the gear part 221 of the rotating body 22 are equal. By making the module m1 of the first transmission gear 412 and the module m2 of the gear part 221 satisfy: m1≤m2, that is, the shape of the teeth of the first transmission gear 412 is smaller, which is beneficial to reduce the height of the teeth of the first transmission gear 412, thereby reducing the height of the first transmission gear 41, and making the thickness of the torque component in the flattened state thinner.

[0094] In one possible implementation, a partition block 415 is provided within the interval 414. The partition block 415 cannot mesh with the second transmission gear 42, nor with the gear portion 221 of the rotating member 20.

[0095] In one possible implementation method, refer to Figure 2 and Figure 3 As shown, the fixing unit 10 also includes a base 12, with both ends of the fixing shaft 11 disposed on the base 12, and a first elastic member 50 sleeved on the fixing shaft 11. The two ends of the first elastic member 50 respectively abut against the sliding member 30 and the base 12.

[0096] Under the elastic force of the first elastic member 50 on the sliding member 30, the sliding member 30 and the rotating member 20 are elastically abutted together. The purpose is that when the rotating member 20 rotates, the sliding member 30 can provide a certain friction or resistance to achieve torque adjustment of the rotation of the rotating member 20.

[0097] In one possible implementation, the first elastic element 50 may be a spring or an elastic sleeve.

[0098] This utility model also provides a folding device, including a swing arm and the aforementioned torque assembly. The swing arm is rotatably disposed in the fixing unit 10 of the torque assembly, and the swing arm is slidably connected to the rotating part 20 of the torque assembly.

[0099] In one possible implementation, the swing arms are arranged on opposite sides of the fixed unit 10. When the swing arms swing on both sides of the fixed unit 10, the swing arms drive the rotating component 20 to rotate. The swing arms slide relative to the rotating component 20 of the torque assembly. The extension arm 23 of the rotating component 20 drives the rotating body 22. The first transmission gear 41 and the second transmission gear 42 of the synchronous gear set 40 mesh with each other, realizing the synchronous swing of the two swing arms on opposite sides of the fixed unit 10.

[0100] Other structural details of the folding device are similar to those of existing structures and will not be elaborated here.

[0101] In one possible implementation, a receiving groove is provided in the swing arm, and the extension arm 23 of the rotating member 20 is slidably disposed in the receiving groove.

[0102] This utility model also provides a smart terminal, including the torsion component described above; or, including the folding device described above.

[0103] Smart terminals can be implemented in various forms. For example, the smart terminals described in this application may include smart terminals such as mobile phones, tablets, laptops, handheld computers, personal digital assistants (PDAs), portable media players (PMPs), navigation devices, wearable devices, smart bracelets, pedometers, etc., as well as fixed terminals such as digital TVs and desktop computers.

[0104] This utility model provides a foldable smart terminal. The smart terminal includes two bodies and a flexible screen. The two bodies are connected by the aforementioned folding device. The two bodies are supported below the non-bending area of ​​the flexible screen, and the folding device is supported below the bending area of ​​the flexible screen. The body structure is similar to existing structures and will not be described in detail here.

[0105] The present invention provides a smart terminal, which, due to the torsion component described above, can effectively prevent the two bodies from folding accidentally due to external disturbances during use, and increases the range of angles at which the folding device can be suspended.

[0106] A flexible screen, also known as a flexible display screen, is used to display images. For example, a flexible screen can be an Organic Light-Emitting Diode (OLED) display, an Active-Matrix Organic Light-Emitting Diode (AMOLED) display, a Mini Organic Light-Emitting Diode display, a Micro Organic Light-Emitting Diode display, a Micro Organic Light-Emitting Diode display, or a Quantum Dot Light-Emitting Diode (QLED) display.

[0107] The following description will use a mobile terminal as an example. Those skilled in the art will understand that, apart from elements specifically designed for mobile purposes, the construction according to the embodiments of this application can also be applied to fixed-type terminals.

[0108] Please refer to Figure 10 The diagram shown illustrates the hardware structure of a mobile terminal implementing various embodiments of this application. The mobile terminal 500 may include: an RF (Radio Frequency) unit 501, a WiFi module 502, an audio output unit 503, an A / V (Audio / Video) input unit 504, a sensor 505, a display unit 506, a user input unit 507, an interface unit 508, a memory 509, a processor 510, and a power supply 511, among other components. Those skilled in the art will understand that... Figure 10 The mobile terminal structure shown does not constitute a limitation on the mobile terminal. The mobile terminal may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0109] The following is combined with Figure 10 A detailed introduction to each component of the mobile terminal:

[0110] The radio frequency unit 501 can be used for receiving and transmitting signals during information transmission or calls. Optionally, it receives downlink information from the base station and processes it with the processor 510; additionally, it transmits uplink data to the base station. Typically, the radio frequency unit 501 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low-noise amplifier, a duplexer, etc. Furthermore, the radio frequency unit 501 can also communicate wirelessly with networks and other devices. The aforementioned wireless communications may use any communication standard or protocol, including but not limited to GSM (Global System of Mobile communication), GPRS (General Packet Radio Service), CDMA2000 (Code Division Multiple Access 2000), WCDMA (Wideband Code Division Multiple Access), TD-SCDMA (Time Division-Synchronous Code Division Multiple Access), FDD-LTE (Frequency Division Duplexing-Long Term Evolution), TDD-LTE (Time Division Duplexing-Long Term Evolution), and 5G, etc.

[0111] WiFi is a short-range wireless transmission technology. Mobile terminals using the WiFi module 502 can help users send and receive emails, browse web pages, and access streaming media, providing users with wireless broadband internet access. Although Figure 10 WiFi module 502 is shown, but it is understood that it is not a necessary component of a mobile terminal and can be omitted as needed without changing the nature of the application.

[0112] The audio output unit 503 can convert audio data received by the radio frequency unit 501 or the WiFi module 502, or stored in the memory 509, into audio signals and output them as sound when the mobile terminal 500 is in call signal receiving mode, call mode, recording mode, voice recognition mode, broadcast receiving mode, or other modes. Furthermore, the audio output unit 503 can also provide audio output related to specific functions performed by the mobile terminal 500 (e.g., call signal receiving sound, message receiving sound, etc.). The audio output unit 503 may include a speaker, a buzzer, etc.

[0113] The A / V input unit 504 is used to receive audio or video signals. The A / V input unit 504 may include a graphics processing unit (GPU) 5041 and a microphone 5042. The GPU 5041 processes image data of still images or videos acquired by an image capture device (such as a camera) in video capture mode or image capture mode. The processed image frames can be displayed on the display unit 506. The image frames processed by the GPU 5041 can be stored in the memory 509 (or other storage medium) or transmitted via the radio frequency unit 501 or the WiFi module 502. The microphone 5042 can receive sound (audio data) in operating modes such as telephone call mode, recording mode, and voice recognition mode, and can process such sound into audio data. The processed audio (voice) data can be converted into a format that can be transmitted to a mobile communication base station via the radio frequency unit 501 in telephone call mode. The microphone 5042 can implement various types of noise cancellation (or suppression) algorithms to eliminate (or suppress) noise or interference generated during the reception and transmission of audio signals.

[0114] The mobile terminal 500 also includes at least one sensor 505, such as a light sensor, a motion sensor, and other sensors. Optionally, the light sensor includes an ambient light sensor and a proximity sensor. Optionally, the ambient light sensor can adjust the brightness of the display panel 5061 according to the ambient light level, and the proximity sensor can turn off the display panel 5061 and / or backlight when the mobile terminal 500 is moved to the ear. As a type of motion sensor, the accelerometer sensor can detect the magnitude of acceleration in various directions (generally three axes), and can detect the magnitude and direction of gravity when stationary. It can be used for applications that recognize the phone's posture (such as landscape / portrait switching, related games, magnetometer posture calibration), vibration recognition related functions (such as pedometer, tapping), etc. Other sensors that may be configured in the phone, such as fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, and infrared sensors, will not be described in detail here.

[0115] The display unit 506 is used to display information input by the user or information provided to the user. The display unit 506 may include a display panel 5061, which may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), or the like.

[0116] User input unit 507 can be used to receive input numerical or character information, and generate key signal inputs related to user settings and function control of the mobile terminal. Optionally, user input unit 507 may include touch panel 5071 and other input devices 5072. Touch panel 5071, also known as touch screen, can collect touch operations on or near the user (such as operations performed by the user using a finger, stylus, or any suitable object or accessory on or near touch panel 5071), and drive corresponding connection devices according to a pre-set program. Touch panel 5071 may include two parts: a touch detection device and a touch controller. Optionally, the touch detection device detects the user's touch position and the signal generated by the touch operation, and transmits the signal to the touch controller; the touch controller receives touch information from the touch detection device, converts it into touch point coordinates, and sends it to processor 510, and can also receive and execute commands sent by processor 510. In addition, touch panel 5071 can be implemented using various types such as resistive, capacitive, infrared, and surface acoustic wave. In addition to the touch panel 5071, the user input unit 507 may also include other input devices 5072. Optionally, other input devices 5072 may include, but are not limited to, one or more of the following: physical keyboard, function keys (such as volume control buttons, power buttons, etc.), trackball, mouse, joystick, etc., without being specifically limited here.

[0117] Optionally, the touch panel 5071 may cover the display panel 5061. When the touch panel 5071 detects a touch operation on or near it, it transmits the information to the processor 510 to determine the type of touch event. Subsequently, the processor 510 provides corresponding visual output on the display panel 5061 based on the type of touch event. Although in Figure 10 In this embodiment, the touch panel 5071 and the display panel 5061 are two independent components to realize the input and output functions of the mobile terminal. However, in some embodiments, the touch panel 5071 and the display panel 5061 can be integrated to realize the input and output functions of the mobile terminal. The specific implementation is not limited here.

[0118] Interface unit 508 serves as an interface through which at least one external device can connect to mobile terminal 500. For example, the external device may include a wired or wireless headset port, an external power supply (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, an audio input / output (I / O) port, a video I / O port, a headphone port, etc. Interface unit 508 may be used to receive input (e.g., data, power, etc.) from the external device and transmit the received input to one or more elements within mobile terminal 500, or it may be used to transmit data between mobile terminal 500 and the external device.

[0119] The memory 509 can be used to store software programs and various data. The memory 509 may primarily include a program storage area and a data storage area. Optionally, the program storage area may store the operating system, applications required for at least one function (such as sound playback, image playback, etc.), etc.; the data storage area may store data created based on the use of the mobile phone (such as audio data, phonebook, etc.). Furthermore, the memory 509 may include high-speed random access memory, and may also include non-volatile memory, such as at least one disk storage device, flash memory device, or other volatile solid-state storage device.

[0120] The processor 510 is the control center of the mobile terminal. It connects various parts of the mobile terminal via various interfaces and lines. By running or executing software programs and / or modules stored in the memory 509, and by calling data stored in the memory 509, it performs various functions and processes data of the mobile terminal, thereby providing overall monitoring of the mobile terminal. The processor 510 may include one or at least one processing unit; preferably, the processor 510 may integrate an application processor and a modem processor. Optionally, the application processor mainly handles the operating system, user interface, and applications, while the modem processor mainly handles wireless communication. It is understood that the modem processor may not be integrated into the processor 510.

[0121] The mobile terminal 500 may also include a power supply 511 (such as a battery) that supplies power to various components. Preferably, the power supply 511 can be logically connected to the processor 510 through a power management system, thereby enabling functions such as charging, discharging, and power consumption management through the power management system.

[0122] although Figure 10 As not shown, the mobile terminal 500 may also include a Bluetooth module, etc., which will not be described in detail here.

[0123] The technical features of the present application can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of the present application.

[0124] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.

Claims

1. A torque assembly, characterized in that, include: A fixing unit (10) includes at least two fixing shafts (11) spaced apart. Rotating component (20), which is rotatably connected to the fixed shaft (11) and rotates on opposite sides of the fixed shaft (11); A sliding member (30) is provided, which is slidably disposed along the axial direction of the fixed shaft (11). The sliding member (30) elastically abuts against the rotating member (20). A cam engagement structure is provided at the contact position between the sliding member (30) and the rotating member (20). The cam engagement structure is configured such that, as the included angle between the two rotating members (20) gradually increases from 0° to a preset angle, the rotating member (20) and the sliding member (30) gradually move away from each other along the axial direction of the fixed shaft (11).

2. The torque assembly according to claim 1, characterized in that, The cam engagement structure includes: A first cam portion (21) is disposed on the rotating member (20). The first cam portion (21) includes at least two first protrusions (211) and at least two first grooves (212) arranged at intervals around the rotation center axis of the rotating member (20). One side edge of the first protrusion (211) has a first mating surface (213). The second cam portion (31) is disposed on the slider (30). The second cam portion (31) includes at least two second protrusions (311) and at least two second grooves (312) arranged at intervals around the rotation center axis of the rotating member (20). One side edge of the second protrusion (311) has a first guide surface (313). As the included angle between the two rotating members (20) gradually increases from 0° to the preset angle, the first mating surface (213) moves along the first guide surface (313) to contact the top surface of the second protrusion (311).

3. The torque assembly according to claim 1, characterized in that, It also includes a synchronizing gear set (40), which is rotatably disposed on the fixed unit (10). The rotating component (20) includes a rotating body (22) and an extension arm (23) connected to the side wall of the rotating body (22). The synchronizing gear set (40) is located between the two rotating bodies (22). The outer peripheral surface of the rotating body (22) is provided with a gear part (221). The synchronizing gear set (40) meshes with the gear parts (221) of the two rotating bodies (22).

4. The torque assembly according to claim 3, characterized in that, The synchronous gear set (40) includes a first transmission gear (41) and a second transmission gear (42) that mesh with each other. The first transmission gear (41) and the second transmission gear (42) respectively mesh with the gear parts (221) of the two rotating bodies (22). At least one of the first transmission gear (41) and the second transmission gear (42) is an incomplete gear. The incomplete gear includes a first hub (411), a first transmission tooth (412), and a second transmission tooth (413). The first transmission tooth (412) and the second transmission tooth (413) are spaced apart on the outer peripheral surface of the first hub (411), and there is a gap area (414) between the first transmission tooth (412) and the second transmission tooth (413).

5. The torque assembly according to claim 4, characterized in that, The first transmission gear (41) is the incomplete gear, the first transmission tooth (412) of the first transmission gear (41) meshes with the second transmission gear (42), and the second transmission tooth (413) meshes with the gear part (221) of the rotating body (22); When the torque assembly is in a flattened state, the interval (414) is located at both ends of the torque assembly in the thickness direction.

6. The torque assembly according to claim 4, characterized in that, The module m1 of the first transmission tooth section (412) and the module m2 of the gear section (221) satisfy the condition: m1≤m2.

7. The torque assembly according to claim 4, characterized in that, A partition block (415) is provided in the interval area (414).

8. The torque assembly according to any one of claims 1-7, characterized in that, The fixing unit (10) further includes a base (12), and the two ends of the fixing shaft (11) are disposed on the base (12). A first elastic element (50) is also sleeved on the fixing shaft (11), and the two ends of the first elastic element (50) abut against the sliding element (30) and the base (12) respectively.

9. A folding device, characterized in that, It includes a swing arm and a torque assembly according to any one of claims 1-8, wherein the swing arm is rotatably disposed on the fixed unit (10) of the torque assembly, and the swing arm is slidably connected to the rotating part (20) of the torque assembly.

10. A smart terminal, characterized in that, It includes the torque component according to any one of claims 1-8; or, it includes the folding device according to claim 9.

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