Damping assembly and hinge
By using a damping component in the hinge to engage with a cam in the clamping space, the hinge's rotation can be partitioned, solving the problem that existing hinges cannot meet the requirements of different folding angles, and improving the practicality and stability of foldable devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-09
- Publication Date
- 2026-03-10
AI Technical Summary
Existing hinge designs cannot meet the usage requirements of foldable devices at different folding angles, resulting in poor practicality.
A damping component is used, which provides damping by cooperating with the cam on the rotating shaft through the clamping space between the mounting plate and the elastic sheet. The different rotation angles of the cam are used to realize the rotation partition of the hinge, so as to achieve different maintainable folding angles.
It improves the practicality of foldable devices in different usage states, meets various usage needs, and increases the functional areas and stability of the devices.
Smart Images
Figure CN121630890A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The application belongs to the technical field of hinges, and particularly relates to a damping assembly and a hinge. BACKGROUND
[0002] Foldable devices are widely used in daily life. Most foldable devices are folded by hinges to facilitate storage, transportation and use. A damping assembly is an important component of a hinge and is mainly used to achieve controllable closing speed and angular positioning, so as to avoid accidental unfolding and folding of the foldable device. In the field of electronic devices, foldable electronic devices (such as foldable screen mobile phones) are also widely popularized, that is, the folding and unfolding of the flexible screen in the electronic device is realized by a hinge.
[0003] In the prior art, the existing hinge design usually relies on a simple mechanical structure, and can only maintain the unfolded state and the folded state of the foldable device, which cannot meet the use requirements of different folding angles, resulting in poor practicability. SUMMARY
[0004] The application aims to provide a damping assembly and a hinge, and aims to improve the practicability of the foldable device.
[0005] In order to achieve the above-mentioned purpose, the application provides a damping assembly in one aspect, comprising: a base comprising a mounting plate and two groups of elastic sheets symmetrically arranged on one side of the mounting plate, a clamping space being formed between the elastic sheets and the mounting plate; two rotating shafts respectively corresponding to being arranged in the clamping space formed by the two groups of elastic sheets and the mounting plate, a cam being formed on the rotating shaft, the cam being clamped between the elastic sheet and the mounting plate, a circumferential outer side of the cam comprising a first side, and a rotating angle between the first side and the mounting plate during rotation of the rotating shaft comprising a folding angle, a self-folding angle, a self-unfolding angle and an unfolding angle which are sequentially increased; When the rotating angle is less than the self-folding angle, the elastic sheet pushes the cam and restores the rotating angle to the folding angle; when the rotating angle is greater than the self-unfolding angle, the elastic sheet pushes the cam and restores the rotating angle to the unfolding angle; and when the rotating angle is between the self-folding angle and the self-unfolding angle, the elastic sheet keeps the rotating angle unchanged.
[0006] In some embodiments, the elastic sheet comprises an inclined section and a horizontal section, one end of the inclined section being connected to the bottom surface of the mounting plate, and the other end of the inclined section being connected to the horizontal section.
[0007] In some embodiments, the circumferential outer side of the cam comprises, in sequence, a first arc surface, a first side surface, a second side surface, a second arc surface, a third side surface, and a fourth side surface, the circle on which the first arc surface lies is concentric with the circle on which the second arc surface lies, and the central angle corresponding to the first arc surface is greater than or equal to the central angle corresponding to the second arc surface.
[0008] In some embodiments, the first side surface is parallel to the third side surface, the second side surface is parallel to the fourth side surface, the first side surface is perpendicular to the second side surface, and the third side surface is perpendicular to the fourth side surface; the horizontal section is parallel to the bottom surface of the mounting plate. When the first side surface is attached to the mounting plate and the third side surface is attached to the horizontal section, the rotation angle is equal to the folding angle; when the first arc surface is attached to the bottom surface of the mounting plate and the second arc surface is attached to the horizontal section, the rotation angle is between the self-folding angle and the self-unfolding angle; when the second side surface is attached to the horizontal section and the fourth side surface is attached to the mounting plate, the rotation angle is equal to the unfolding angle.
[0009] In some embodiments, a plurality of the elastic sheets are arranged on the mounting plate in the axial direction of the rotation shaft, a plurality of cams are arranged on the rotation shaft in the axial direction, and the plurality of cams are arranged one by one between the plurality of elastic sheets and the mounting plate.
[0010] In some embodiments, a plurality of middle limiting plates are further arranged on the mounting plate, a limiting hole is arranged on the middle limiting plate, the middle limiting plate is located between two adjacent elastic sheets, and the rotation shaft penetrates the middle limiting plate through the limiting hole.
[0011] In some embodiments, end mounting seats are arranged at both ends of the mounting plate in the length direction of the rotation shaft, and both ends of the rotation shaft penetrate the end mounting seats.
[0012] In some embodiments, a transmission gear is arranged on the end mounting seat, a rotation gear is arranged on the rotation shaft, and the rotation gears on the two rotation shafts are engaged with each other through the transmission gear.
[0013] In some embodiments, the rotation shaft comprises a long shaft part and a short shaft part which are detachably connected in the axial direction of the rotation shaft.
[0014] Another aspect of the present application provides a hinge comprising the damping assembly as described above.
[0015] Through the above technical solutions, the damping assembly and the hinge of the present application have the following beneficial effects: In the present application, the damping assembly provides damping through interference fit between the clamping space formed between the mounting plate and the elastic sheet and the cam on the rotating shaft, and uses different rotating angles of the cam to realize rotating partition of the hinge, i.e. the rotating clamping angle is less than the self-folding angle, the rotating clamping angle is between the self-folding angle and the self-unfolding angle, and the rotating clamping angle is greater than the self-unfolding angle, so that the foldable device has different maintainable folding angles, thereby meeting different use requirements and having good practicability.
[0016] Other features and advantages of the embodiments of the present application will be described in detail in the following detailed description. BRIEF DESCRIPTION OF DRAWINGS
[0017] The accompanying drawings are included to provide a further understanding of the embodiments of the present application, and constitute a part of the specification, and are used together with the following detailed description to explain the embodiments of the present application, but do not constitute a limitation of the embodiments of the present application. For those skilled in the art, other drawings can be obtained from the structures shown in the drawings without creative labor. In the drawings: Figure 1 It is a schematic view of the structure of the damping assembly according to the specific embodiments of the present application; Figure 2 It is a schematic view of the sectional structure of the base according to the specific embodiments of the present application; Figure 3 It is a schematic view of the structure of the rotating shaft according to the specific embodiments of the present application; Figure 4 It is a schematic view of the sectional structure of the cam according to the specific embodiments of the present application; Figure 5 It is a schematic view of the contact between the cam and the base when the rotating clamping angle is the folding angle according to the specific embodiments of the present application; Figure 6 It is a schematic view of the contact between the cam and the base when the rotating clamping angle is less than the self-folding angle according to the specific embodiments of the present application; Figure 7 It is a schematic view of the contact between the cam and the base when the rotating clamping angle is between the self-folding angle and the self-unfolding angle according to the specific embodiments of the present application; Figure 8 It is a schematic view of the contact between the cam and the base when the rotating clamping angle is greater than the self-unfolding angle according to the specific embodiments of the present application; Figure 9 It is a schematic view of the contact between the cam and the base when the rotating clamping angle is the unfolding angle according to the specific embodiments of the present application; Figure 10 It is an assembly schematic view of the transmission gear and the rotating gear engaged at the end of the base according to the specific embodiments of the present application; Figure 11A schematic view of a hinge in a folded state according to an embodiment of the present application; Figure 12 A schematic view of a hinge in an unfolded state according to an embodiment of the present application; Figure 13 An exploded schematic view of a hinge according to an embodiment of the present application; Figure 14 A schematic view of a first sliding seat according to an embodiment of the present application; Figure 15 A schematic view of a driven link according to an embodiment of the present application; Figure 16 A schematic view of an external mounting plate according to an embodiment of the present application; Figure 17 A schematic view of a second sliding seat according to an embodiment of the present application; Figure 18 A schematic view of an end link according to an embodiment of the present application; Figure 19 An assembly schematic view of an end link, a driven link and a rotating shaft according to an embodiment of the present application; Figure 20 An assembly schematic view of an end link, a driven link, an external mounting plate, a first sliding seat and a second sliding seat according to an embodiment of the present application; Figure 21 A schematic view of a flexible screen switching from an unfolded state to a folded state in a folding screen mobile phone according to an embodiment of the present application; Figure 22 A schematic view of a long sliding rod according to an embodiment of the present application.
[0018] Explanation of reference signs 100, damping assembly; 1, mounting plate; 2, rotating shaft; 21, connecting block; 3, elastic sheet; 31, inclined section; 32, horizontal section; 4, cam; 41, first curved surface; 42, first side surface; 43, second side surface; 44, second curved surface; 45, third side surface; 46, fourth side surface; 5, middle limiting plate; 6, end mounting seat; 7, transmission gear; 8, rotating gear; 9, gear shaft; 200. External connecting component; 10. First sliding seat; 101. First sliding groove; 102. First sliding block; 20. External mounting plate; 30. Long sliding rod; 40. Second sliding seat; 401. Second sliding groove; 402. Second sliding block; 50. Driven connecting rod; 501. First locking groove; 502. First connecting block; 60. Unfolding sliding groove; 601. First limiting groove; 602. First limiting block; 603. Second limiting groove; 604. Second limiting block; 70. End connecting rod; 701. Second locking groove; 702. Second connecting block; 80. Connecting plate; 90. Unfolding sliding block; 1000, Hinges. Detailed Implementation
[0019] The specific embodiments of this application will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this application.
[0020] The terminology of damping components and hinges according to this application is described below with reference to the accompanying drawings.
[0021] like Figures 1 to 4 As shown, a specific embodiment of this application provides a damping component 100, including a base and two rotating shafts 2. The base includes a mounting plate 1 and two sets of elastic plates 3 symmetrically arranged on one side of the mounting plate 1, forming a clamping space between the elastic plates 3 and the mounting plate 1. The two rotating shafts 2 are respectively inserted into the clamping space formed by the two sets of elastic plates 3 and the mounting plate 1. A cam 4 is formed on the rotating shaft 2, and the cam 4 is clamped between the elastic plates 3 and the mounting plate 1. The circumferential outer side of the cam 4 includes a first side surface 42. The rotation angle between the first side surface 42 and the mounting plate 1 includes a folding angle, a self-folding angle, a self-unfolding angle, and an unfolding angle that increase sequentially. When the rotation angle is less than the self-folding angle, the elastic plate 3 pushes the cam 4 and restores the rotation angle to the folding angle. When the rotation angle is greater than the self-unfolding angle, the elastic plate 3 pushes the cam 4 and restores the rotation angle to the unfolding angle. When the rotation angle is between the self-folding angle and the self-unfolding angle, the elastic plate 3 keeps the rotation angle unchanged.
[0022] The foldable device unfolds and folds via hinge 1000. Damping assembly 100 is a crucial component of the hinge. Cam 4 on rotating shaft 2, in interference fit with elastic plate 3 and mounting plate 1, provides damping during rotation. Rotating shaft 2 is used for external connection, referring to connection to the foldable portion of the foldable device. Some foldable devices, in addition to requiring folded and unfolded states, also require a hovering state, where the angle between the foldable portions remains constant to create different usage states and achieve certain specific functions. Damping assembly 100 also serves to maintain this angle constant.
[0023] For example, the folding electronic device, two rotating shafts are used to connect two rotating parts on the shell of the folding electronic device, to realize the unfolding and folding of the flexible screen. In other words, different angle values of the rotating angle correspond to different use states of the folding electronic device: the folding angle corresponds to the shell being in a folded state, that is, the angle between the planes of the two rotating parts is 0°; the unfolding angle corresponds to the shell being in an unfolded state, that is, the angle between the planes of the two rotating parts is 180°; when the rotating angle is between the folding angle and the unfolding angle, the shell is in a hovering state, when the rotating angle is less than the folding angle, the shell is in a self-folding state, and when the rotating angle is greater than the unfolding angle, the shell is in a self-unfolding state, wherein the angle between the two parts of the shell in the hovering state remains unchanged, that is, the angle between the planes of the two rotating parts remains unchanged; in the self-folding state, the two parts of the shell automatically tend to the folded state from the current state, and in the self-unfolding state, the two parts of the shell automatically tend to the unfolded state from the current state.
[0024] In other words, the rotating angle includes the folding angle, the self-folding angle, the self-unfolding angle, and the unfolding angle in turn increasing, so that the shell includes the folded state, the self-folding state, the hovering state, the self-unfolding state, and the unfolded state, so that the folding electronic device has corresponding different use states. It can be seen that by using the hinge 1000 provided in the present application, the variable friction torque constructed by the base and the cam 4 is used to increase the functional division of the hinge 1000, so as to increase the different use states of the folding electronic device, so as to meet different use requirements, and thus the folding electronic device has good practicability.
[0025] Specifically, the rotating shaft 2 is used to connect the external mounting plate 20, the external mounting plate 20 is used to mount the shell, the flexible screen is mounted on the two shells, the two rotating parts of the shell are respectively connected with the two external mounting plates 20 one by one, the external mounting plates 20 are respectively connected with the two rotating shafts 2 one by one, and the two rotating shafts 2 are respectively matched with the two clamping spaces one by one. By rotating the two shells, the rotating shaft 2 is rotated in the clamping space to realize the folding, hovering and unfolding of the shell, so that the flexible screen can be folded, unfolded and unfolded to a certain fixed angle.
[0026] It should be noted that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship only for the convenience of describing the present disclosure and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present disclosure. When the absolute position of the described object changes, the relative positional relationship may also change accordingly. For the convenience of description, in the specific embodiments of the present application, the length direction of the mounting plate 1 is the "front-rear direction", the width direction of the mounting plate 1 is the "left-right direction", and the thickness direction of the mounting plate 1 is the "up-down direction". The specific positions of "upper", "lower", "left", "right", "front" and "back" are shown by arrows and marks in the drawings.
[0027] It should be noted that in the specific embodiments of the present application, a folding electronic device is taken as an example for description, and other foldable devices also belong to the protection scope of the present application in addition to the folding electronic device.
[0028] As shown in Figure 2 and Figure 4 In some embodiments, the elastic sheet 3 includes an inclined section 31 and a horizontal section 32, one end of the inclined section 31 is connected with the bottom surface of the mounting plate 1, the other end of the inclined section 31 is connected with the horizontal section 32, and the horizontal section 32 is parallel to the bottom surface of the mounting plate 1. It can be understood that the inclined section 31 and the horizontal section 32 in the elastic sheet 3 can be made of elastic material (such as spring sheet) to have elastic deformation capability. The circumferential outer side of the cam 4 includes a first arc surface 41, a first side surface 42, a second side surface 43, a second arc surface 44, a third side surface 45 and a fourth side surface 46 connected in sequence. The first side surface 42 is parallel to the third side surface 45, the second side surface 43 is parallel to the fourth side surface 46, the first side surface 42 is perpendicular to the second side surface 43, and the third side surface 45 is perpendicular to the fourth side surface 46. The circle where the first arc surface 41 is located and the circle where the second arc surface 44 is located are concentric circles, and the central angle of the first arc surface 41 is greater than or equal to the central angle of the second arc surface 44. Figure 5 As shown in Figure 7 As shown in Figure 9 As shown in
[0029] Specifically, the base comprises two groups of elastic sheets 3 arranged symmetrically along the left-right direction, the left end of the inclined section 31 of the elastic sheet 3 on the right side and the right end of the inclined section 31 of the elastic sheet 3 on the left side are connected with the middle position of the bottom surface of the mounting plate 1, the right end of the inclined section 31 of the elastic sheet 3 on the right side is below the left end of the inclined section 31, the left end of the inclined section 31 of the elastic sheet 3 on the left side is below the right end of the inclined section 31, the left end of the horizontal section 32 of the elastic sheet 3 on the right side is connected with the right end of the inclined section 31, the right end of the horizontal section 32 of the elastic sheet 3 on the left side is connected with the left end of the inclined section 31, in other words, the elastic sheet 3 on the right side and the mounting plate 1 form a clamping space open to the right, and the elastic sheet 3 on the left side and the mounting plate 1 form a clamping space open to the left.
[0030] As shown in Figures 5 to 9 Further, the working principle of the damping assembly 100 is described in detail by taking the right clamping space and the right cam 4 as an example. As shown in Figure 5 In the folded state, the rotation angle is equal to the folding angle, the first side surface 42 is attached to the bottom surface of the mounting plate 1, the third side surface 45 is attached to the top surface of the horizontal section 32, the horizontal section 32 applies an action force vertically upward and passing through the rotation center of the cam 4 to the cam 4, and the mounting plate 1 applies a counterforce to the cam 4 to offset the action force. As shown in Figure 6 In the self-folding state, the rotation angle is greater than the folding angle and less than the self-folding angle, the connection between the first side surface 42 and the first curved surface 41 is in contact with the bottom surface of the mounting plate 1, the connection between the third side surface 45 and the second curved surface 44 is in contact with the top surface of the horizontal section 32, the horizontal section 32 applies an action force F obliquely upward to the cam 4, and through the horizontal and vertical force decomposition of the action force F, it can be known that the vertical component force is offset by the mounting plate 1, and the horizontal component force drives the rotation angle to return to the folding angle. As shown in Figure 7 In the hovering state, the rotation angle is not less than the self-folding angle and not greater than the self-expanding angle, the first curved surface 41 is in contact with the bottom surface of the mounting plate 1, and the second curved surface 44 is in contact with the top surface of the horizontal section 32, the horizontal section 32 applies an action force passing through the rotation center of the cam 4 to the cam 4 (i.e. the action force F vertically upward in the state shown in the figure, i.e. the action force perpendicular to the mounting plate 1), and the mounting plate 1 applies a counterforce to the cam 4 to offset the action force. As shown in Figure 8As shown, in the self-unfolding state: the rotation angle is greater than the self-unfolding angle and less than the unfolding angle. The connection between the fourth side surface 46 and the first arc surface 41 is in contact with the bottom surface of the mounting plate 1. The connection between the second side surface 43 and the second arc surface 44 is in contact with the top surface of the horizontal section 32. The horizontal section 32 applies an upward force F to the cam 4. By decomposing the force F into horizontal and vertical forces, it can be seen that the vertical component is canceled out by the mounting plate 1, and the horizontal component drives the rotation angle to return to the folding angle. like Figure 9 As shown, in the unfolded state: the included angle of rotation is equal to the unfolded angle, the fourth side 46 is in contact with the bottom surface of the mounting plate 1, the second side 43 is in contact with the top surface of the horizontal section 32, the horizontal section 32 applies a vertically upward force to the cam 4 that passes through the rotation center of the cam 4, and the mounting plate 1 applies a counteracting force to the cam 4 to counteract the force.
[0031] In this application, the functional partitioning of hinge 1000 is achieved by utilizing the variable friction torque of the interaction between the elastic base and the cam 4 of the rotating shaft 2. The structure is relatively simple, with low production cost and good application prospects.
[0032] In the exemplary embodiments of this application, since the damping assembly 100 achieves relative rotation of the two external mounting plates 20 through two sets of rotating shafts 2 and elastic sheets 3, the operating angle of the foldable electronic device is twice the rotation angle. In one implementation, the folding angle is 0°, the self-folding angle is 15°, the self-unfolding angle is 75°, and the unfolding angle is 90°. When the rotation angle is 0°, the operating angle of the housing is 0°; when the rotation angle is 15°, the operating angle of the housing is 30°; when the rotation angle is 75°, the operating angle of the housing is 150°; and when the rotation angle is 90°, the operating angle of the housing is 180°.
[0033] It should be noted that the self-folding angle and self-unfolding angle can be adjusted according to actual needs. Specifically, they can be adjusted by adjusting the central angle of the first arc surface 41 and the central angle of the second arc surface 44.
[0034] like Figure 1 and Figure 3 As shown, in some embodiments, multiple elastic plates 3 are arranged at intervals along the axial direction of the rotation shaft 2 on the mounting plate 1. Multiple cams 4 are provided along the axial direction on the rotation shaft 2, and each cam 4 is respectively positioned between the multiple elastic plates 3 and the mounting plate 1. If the external mounting plate 20 is long, a sufficiently long rotation shaft 2 is required to connect to the external mounting plate 20. By setting multiple sets of cooperating cams 4 and elastic plates 3, the reliability of damping is ensured, and the reliability of the damping assembly 100 is improved.
[0035] It should be noted that only one cam 4 can also be arranged on the rotating shaft 2, as long as the cam 4 and the elastic sheet 3 have a relatively long matching length in the length direction of the mounting plate 1.
[0036] As shown in the Figure 1 some embodiments, a plurality of middle limiting plates 5 are also arranged on the mounting plate 1, the middle limiting plates 5 are provided with limiting holes, and the middle limiting plates 5 and the elastic sheets 3 are staggered in the front-rear direction, that is, one middle limiting plate 5 is arranged between two adjacent elastic sheets 3 in the front-rear direction, and the rotating shaft 2 penetrates all the middle limiting plates 5 through the limiting holes. The rotating shaft 2 is prevented from being separated from the clamping space through the limiting holes of the middle limiting plates 5, so that the cam 4 and the elastic sheet 3 can interact with each other, thereby improving the reliability of the damping assembly 100.
[0037] As shown in the Figure 1 some embodiments, two end mounting seats 6 are arranged on the bottom surface of the mounting plate 1, that is, the two end mounting seats 6 are respectively arranged near the two ends of the mounting plate 1 in the length direction, that is, the front end and the rear end, the elastic sheet 3 is located between the two end mounting seats 6, and the two ends of the rotating shaft 2 penetrate the end mounting seats 6. The rotating shaft 2 is prevented from being separated from the clamping space through the end mounting seats 6, so that the cam 4 and the elastic sheet 3 can interact with each other, thereby improving the reliability of the damping assembly 100.
[0038] As shown in the Figure 10 some embodiments, a transmission gear 7 is arranged on the end mounting seat 6, and a rotating gear 8 is arranged on the rotating shaft 2. The rotating gears 8 on the two rotating shafts 2 are meshed with each other through the transmission gears 7. In other words, the left and right rotating shafts 2 are connected through the respective transmission gears 7 and the rotating gears 8. As can be seen, the synchronous rotation of the two transmission gears 7 can be realized through the transmission gears 7, so as to realize the synchronous rotation of the two outer mounting plates 20 driven by the rotating shafts 2, thereby realizing the synchronous movement of the two screens in the folding process and the unfolding process of the shell, and further improving the user experience.
[0039] Specifically, the gear shaft 9 is integrally formed on the front end surface of the end mounting seat 6 on the front side, the part of the rotating shaft 2 protruding forward from the end mounting seat 6 on the front side is sleeved with the rotating gear 8, the gear shaft 9 is integrally formed on the rear end surface of the end mounting seat 6 on the rear side, and the part of the rotating shaft 2 protruding rearward from the end mounting seat 6 on the rear side is sleeved with the rotating gear 8.
[0040] Further, the number of transmission gears 7 is four, and the transmission gears 7 are arranged in pairs and symmetrically on the end mounting seats 6, so as to improve the reliability of the damping assembly 100.
[0041] In the present application, the transmission gear 7 is arranged on the end mounting seat 6, the rotating gear 8 and the cam 4 are arranged on the rotating shaft 2, the redundant parts are reduced, the integrated arrangement of the parts is realized, the spatial layout of the damping assembly 100 is optimized, and then the thin and light design of the foldable electronic device is facilitated.
[0042] In some embodiments, the rotating shaft 2 includes a long rotating shaft part and a short rotating shaft part which are detachably connected along the axial direction of the rotating shaft 2. The long rotating shaft part is provided with a connecting jack, and the short rotating shaft part is provided with a connecting plug. The detachable connection of the long rotating shaft part and the short rotating shaft part is realized by the plug-in cooperation of the connecting plug and the connecting jack, so as to facilitate the installation and connection of the rotating shaft 2 and the base.
[0043] As shown in Figure 11 and Figure 12 , the specific embodiments of the present application also provide a hinge 1000 including the damping assembly 100 of the hinge 1000 as described above. Since the hinge 1000 adopts all the embodiments of the damping assembly 100 described above, the hinge 1000 has the beneficial effects brought by all the embodiments of the damping assembly 100.
[0044] As shown in Figure 3 , Figures 11 to 16 , in some embodiments, the hinge 1000 includes the damping assembly 100, the first sliding seat 10 and two groups of external connection assemblies 200. The damping assembly 100 includes the base and two rotating shafts 2 which are pivotally arranged on the base and are in interference fit with the base. The first sliding seat 10 is connected with the base and is symmetrically provided with two first sliding grooves 101. The two groups of external connection assemblies 200 are respectively connected with the two rotating shafts 2. The external connection assembly 200 includes the external mounting plate 20 and the driven link 50. The driven link 50 is connected with the rotating shaft 2. The driven link 50 is slidingly connected with the external mounting plate 20 and has the first sliding block 102 which is slidingly matched with the first sliding groove 101.
[0045] The foldable device has an unfolded state and a folded state and includes at least two rotating parts. The two groups of external connection assemblies 200 are used to externally connect the relatively rotatable rotating parts of the foldable device. The rotation of the rotating parts switches the foldable device between the folded state and the unfolded state. When the rotating parts rotate, the motion trajectory guidance is provided by the sliding cooperation of the first sliding block 102 and the first sliding groove 101, so as to reduce the swing of the external connection assembly 200 in the rotating process, and then the stability of the folding process and the unfolding process is improved.
[0046] Taking a folding electronic device as an example, the shell of the folding electronic device (such as a folding screen mobile phone) includes two rotating parts capable of relative rotation, the two rotating parts are connected by a hinge 1000 to realize unfolding and folding of the folding electronic device, and the folding state of the shell corresponds to an included angle of 0° between the planes where the two rotating parts are located, and the unfolded state of the shell corresponds to an included angle of 180° between the planes where the two rotating parts are located.
[0047] Specifically, the rotating shafts 2 are arranged in pairs, the external connecting assemblies 200 are arranged in pairs, the pairs of external connecting assemblies 200 are respectively connected in one-to-one correspondence with the pairs of rotating shafts 2, the pairs of external mounting plates 20 are respectively connected in one-to-one correspondence with the two rotating parts, the flexible screen is mounted on the shell, the two rotating parts of the shell are respectively connected in one-to-one correspondence with the two external connecting assemblies 200, and the two rotating shafts 2 are pivotally connected with the base. The relative rotation of the two external connecting assemblies 200 is driven by the rotation of the rotating shaft 2 to drive the relative rotation of the two rotating parts of the shell, so as to switch the folding state and the unfolded state of the folding electronic device.
[0048] Further, the front and rear ends (i.e. the two ends in the length direction of the base) of the base are each provided with a first sliding seat 10, and the two ends of the driven connecting rod 50 are each provided with a first sliding block 102, and the two first sliding blocks 102 are respectively in sliding fit with the first sliding grooves 101 of the two first sliding seats 10. In the case that the shell of the folding electronic device is relatively long, the length of the external connecting assembly 200 can be increased by increasing the length of the damping assembly 100 and providing the first sliding seat 10 at the two ends of the damping assembly 100, so as to be connected with the shell with a relatively long length, thereby improving the adaptability of the hinge 1000.
[0049] As shown in FIG. 1, Figures 17 to 20 In some embodiments, the hinge 1000 further includes a second sliding seat 40 connected with the first sliding seat 10, the external connecting assembly 200 further includes an end connecting rod 70, the end connecting rod 70 is in sliding fit with the second sliding seat 40, the second sliding seat 40 is connected with the first sliding seat 10, and the end connecting rod 70 is in sliding connection with the driven connecting rod 50.
[0050] Further, the first sliding seat 10 and the second sliding seat 40 are arranged at intervals in the length direction of the base, the first sliding groove 101 is arranged on the side of the first sliding seat 10 close to the second sliding seat 40, the end of the driven connecting rod 50 is located between the first sliding seat 10 and the second sliding seat 40, the end of the driven connecting rod 50 on the side close to the first sliding seat 10 is provided with a first sliding block 102 that is in sliding cooperation with the first sliding groove 101, the second sliding groove 401 is arranged on the side of the second sliding seat 40 close to the first sliding seat 10, and the end of the end connecting rod 70 on the side close to the second sliding seat 40 is provided with a second sliding block 402 that is in sliding cooperation with the second sliding groove 401. The sliding cooperation between the second sliding block 402 and the second sliding groove 401 provides precise guidance of the movement trajectory, thereby further reducing the swing of the external connecting assembly 200 during the rotation, and further improving the stability of the folding process and the unfolding process.
[0051] Specifically, the first sliding seat 10 located in the front is a front first sliding seat, the first sliding seat 10 located in the rear is a rear first sliding seat, the second sliding seat 40 connected with the front first sliding seat is a front second sliding seat, the second sliding seat 40 connected with the rear first sliding seat is a rear second sliding seat, the rear end of the front first sliding seat is connected with the front end of the base, the rear end of the front second sliding seat is connected with the first sliding seat 10, the first sliding groove 101 at the front end of the front first sliding seat is a front first sliding groove, the second sliding groove 401 formed at the rear end of the front second sliding seat is a front second sliding groove, the front end face of the front first sliding seat and the rear end face of the front second sliding seat are arranged at intervals in the front-rear direction, the front end of the driven connecting rod 50 extends into the space between the front end face of the front first sliding seat and the rear end face of the front second sliding seat, the first sliding block 102 on the front end of the driven connecting rod 50 extends backward and is inserted into the front first sliding groove, and the second sliding block 402 extends forward and is inserted into the front second sliding groove. The rear first sliding seat, the rear second sliding seat, and the rear end of the external connecting assembly 200 have the same structure as the front first sliding seat, the front second sliding seat, and the front end of the external connecting assembly 200.
[0052] In some embodiments, the movement trajectory of the rotating part is arc-shaped, and therefore the first sliding groove 101 and the second sliding groove 401 need to be arranged as arc-shaped grooves to avoid interference with the movement trajectory of the rotating part of the folding electronic device. The central angles of the circular arcs of the first sliding groove 101 and the second sliding groove 401 can be determined according to the rotation angle of the rotating shaft 2 from the folding state to the unfolded state.
[0053] In some embodiments, the front and rear ends of the driven link 50 are each formed with a first clamping groove 501, and the front and rear ends of the rotating shaft 2 are each provided with a first connecting clamping block 502 which is clamped into the first clamping groove 501 and is in sliding fit with the first clamping groove 501, so that the rotating shaft 2 can be driven to rotate by the driven link 50, and meanwhile, the disassembly and assembly are facilitated; the driven link 50 is formed with a second clamping groove 701, and the end link 70 is provided with a second connecting clamping block 702 which is clamped into the second clamping groove 701 and is in sliding fit with the second clamping groove 701, so that the end link 70 can be driven to rotate by the driven link 50, and meanwhile, the disassembly and assembly are facilitated; the sliding direction of the first connecting clamping block 502 relative to the first clamping groove 501 is the same as the sliding direction of the second connecting clamping block 702 relative to the second clamping groove 701, so as to avoid motion interference and improve the reliability of the hinge 1000.
[0054] Specifically, the end link 70 connected with the front end of the driven link 50 is a front end link, and the end link 70 connected with the rear end of the driven link 50 is a rear end link, and both the front end link and the rear end link are connected with the external mounting plate 20. The rear end of the front end link is connected with the front end of the driven link 50 and extends between the front first sliding seat and the front second sliding seat, and the rear end surface of the front end link is provided with a second sliding block 402, and the rear end link has the same structure as the front end link.
[0055] Further, if the length of the external mounting plate 20 is relatively long, the front end link and the rear end link can be installed, and if the length of the external mounting plate 20 is relatively short, the front end link and the rear end link can be disassembled, so as to improve the adaptability of the hinge 1000.
[0056] As shown in Figure 15 , Figure 16 , Figure 20 and Figure 21 , in some embodiments, the side of the external mounting plate 20 close to the driven link 50 is formed with an unfolding sliding groove 60 which extends along the thickness direction of the external mounting plate 20, and the end of the end link 70 is provided with an unfolding sliding block 90 which is in sliding fit with the unfolding sliding groove 60. The relative movement of the driven link 50 and the end link 70 along the thickness direction of the external mounting plate 20 is realized by the sliding fit of the unfolding sliding block 90 and the unfolding sliding groove 60.
[0057] Specifically, when the shell is in the folded state, the two plate surfaces of the two external mounting plates 20 are arranged oppositely, so that the flexible screen is folded and located between the two external mounting plates 20. However, the flexible screen cannot be completely folded, so the thickness of the folded part of the flexible screen after folding is obviously greater than the thickness of other positions of the flexible screen. Moreover, the external mounting plate 20 is driven by the driven link 50 and the end link 70, and the folded part of the flexible screen after folding is located between the two driven links 50. Therefore, when the shell is in the folded state, the spacing between the two driven links 50 and the spacing between the two end links 70 need to be greater than the thickness of the folded part of the flexible screen after folding. If the spacing between the two external mounting plates 20 at this time is the same as the spacing between the two driven links 50, the flexible screen may have a serious fold mark. In the embodiment of the present application, during the folding process, the driven link 50, the end link 70 and the external mounting plate 20 move away from each other along the thickness direction of the external mounting plate 20, so as to avoid the two driven links 50 and the two end links 70, and the accommodation space for accommodating the folded part of the flexible screen is formed. The width of the accommodation space is greater than the spacing between the two external mounting plates 20 after folding, thereby improving the service life of the flexible screen.
[0058] Further, the slot wall of the unfolding sliding groove 60 limits the unfolding sliding block 90 in the direction perpendicular to the relative sliding of the two, so as to avoid the driven link 50 and the external mounting plate 20 from separating from each other, thereby improving the connection reliability of the driven link 50 and the external mounting plate 20.
[0059] Specifically, the slot wall of the unfolding sliding groove 60 is formed with a first limiting groove 601, the side of the driven link 50 extends into the unfolding sliding groove 60 and is provided with a first limiting block 602 which is inserted and matched with the first limiting groove 601. The insertion and matching of the first limiting block 602 and the first limiting groove 601 realizes the limiting matching of the driven link 50 and the external mounting plate 20, so as to avoid the driven link 50 and the external mounting plate 20 from separating from each other, thereby improving the connection reliability of the driven link 50 and the external mounting plate 20. The slot wall of the unfolding sliding groove 60 is formed with a second limiting groove 603, the side of the end link 70 extends into the second limiting groove 603 and is provided with a second limiting block 604 which is inserted and matched with the second limiting groove 603. The insertion and matching of the second limiting block 604 and the second limiting groove 603 realizes the limiting matching of the end link 70 and the external mounting plate 20, so as to avoid the end link 70 and the external mounting plate 20 from separating from each other, thereby improving the connection reliability of the end link 70 and the external mounting plate 20.
[0060] Further, the first limiting block 602 and / or the second limiting block 604 are arranged on the unfolding sliding block 90, so as to realize the engagement of the unfolding sliding block 90 and the slot wall of the unfolding sliding groove 60. The first limiting groove 601 and the second limiting groove 603 both penetrate the external mounting plate 20 along the thickness direction of the external mounting plate 20.
[0061] As Figure 11 , Figure 12 and Figure 22 shown, in some embodiments, if the length requirement of the hinge 1000 is further increased, the hinge 1000 comprises a plurality of damping assemblies 100 arranged at intervals in the front-rear direction, the hinge 1000 further comprises a connecting plate 80 connecting two adjacent damping assemblies 100, each rotating shaft 2 is provided with an external connecting assembly 200, two external connecting assemblies 200 on the same side are connected with the same rotating part of the housing, the hinge 1000 further comprises a long slide rod 30 arranged symmetrically, the front end link and / or the rear end link can be extended in the front-rear direction to form a long slide rod 30 to connect two adjacent external connecting assemblies 200 in the front-rear direction, the end of the long slide rod 30 is similar in structure to the end link 70, and the external mounting plate 20 connected therewith is also provided with a corresponding matching structure to realize the synchronous rotation of the two external connecting assemblies 200 on the same side, thereby improving the reliability of the hinge 1000. And further improve the adaptability of the hinge 1000.
[0062] The specific embodiments of the present application also provide an electronic device comprising the hinge 1000 as described above. Since the electronic device adopts all the embodiments of the hinge 1000 described above, the electronic device has the beneficial effects brought by all the embodiments of the hinge 1000.
[0063] In the description of the present application, it should be understood that the terms "first", "second" are only for the purpose of description and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.
[0064] In the present application, unless otherwise specifically defined and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood in a broad sense, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or in communication with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0065] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "an example", "a specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are contained in at least one embodiment or example of the present application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, the person skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.
[0066] Although the embodiments of the present application have been shown and described above, it is understood that the above embodiments are exemplary and are not to be construed as limiting the present application, and the person skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the present application.
Claims
1. A damping assembly, characterized by The utility model relates to a base, including installation board (1) and two groups of elastic sheet (3) symmetrically arranged on one side of installation board (1), and the elastic sheet (3) and installation board (1) form clamping space between, two rotating shafts (2) correspond to the clamping space formed in two groups of elastic sheet (3) and installation board (1) respectively, and the rotating shaft (2) forms cam (4) on, and cam (4) is clamped between elastic sheet (3) and installation board (1), and the circumferential outside of cam (4) includes first side (42), and the rotating angle between first side (42) and installation board (1) during the rotation of rotating shaft (2) includes folding angle, self folding angle, self unfolding angle and unfolding angle that increase gradually, wherein when the rotating angle is less than self folding angle, elastic sheet (3) pushes cam (4) and makes rotating angle restore to folding angle, when the rotating angle is greater than self unfolding angle, elastic sheet (3) pushes cam (4) and makes rotating angle restore to unfolding angle, when the rotating angle is between self folding angle and self unfolding angle, elastic sheet (3) keeps rotating angle unchanged. The elastic sheet (3) includes an inclined section (31) and a horizontal section (32), one end of the inclined section (31) is connected to the bottom surface of the installation plate (1), and the other end of the inclined section (31) is connected to the horizontal section (32). The circumferential outside of the cam (4) includes a first arc surface (41), the first side (42), a second side (43), a second arc surface (44), a third side (45), and a fourth side (46) connected in sequence. The circle where the first arc surface (41) is located and the circle where the second arc surface (44) is located are concentric circles, and the central angle corresponding to the first arc surface (41) is greater than or equal to the central angle corresponding to the second arc surface (44). The first side (42) and the third side (45) are parallel to each other, the second side (43) and the fourth side (46) are parallel to each other, the first side (42) and the second side (43) are perpendicular to each other, the third side (45) and the fourth side (46) are perpendicular to each other, and the horizontal section (32) and the bottom surface of the installation plate (1) are parallel to each other.
2. The damping assembly of claim 1, wherein, When the first side (42) is attached to the installation plate (1) and the third side (45) is attached to the horizontal section (32), the rotating angle is equal to the folding angle; when the first arc surface (41) is attached to the bottom surface of the installation plate (1) and the second arc surface (44) is attached to the horizontal section (32), the rotating angle is between the self folding angle and the self unfolding angle; when the second side (43) is attached to the horizontal section (32) and the fourth side (46) is attached to the installation plate (1), the rotating angle is equal to the unfolding angle.
3. The damping assembly of claim 2, wherein, 4. The damper assembly of claim 3, wherein, 5. The damper assembly of claim 1, wherein, A plurality of said elastic sheets (3) are arranged on said mounting plate (1) along the axial direction of said rotating shaft (2) and are spaced apart from each other, a plurality of cams (4) are arranged on said rotating shaft (2) along the axial direction, and each of said plurality of cams (4) is arranged between one of said plurality of elastic sheets (3) and said mounting plate (1) one by one.
6. The damper assembly of claim 5, wherein, A plurality of middle limiting plates (5) are further arranged on said mounting plate (1), said middle limiting plates (5) are provided with limiting holes, said middle limiting plates (5) are arranged between two adjacent elastic sheets (3), and said rotating shaft (2) penetrates said middle limiting plates (5) through said limiting holes.
7. The damper assembly of claim 1, wherein, End mounting seats (6) are arranged on both ends of said mounting plate (1) along the length direction of said rotating shaft (2), and both ends of said rotating shaft (2) penetrate said end mounting seats (6).
8. The damper assembly of claim 7, wherein, A transmission gear (7) is arranged on said end mounting seat (6), and a rotating gear (8) is arranged on said rotating shaft (2), and said rotating gears (8) on two said rotating shafts (2) are engaged with each other through said transmission gear (7).
9. The damper assembly of any one of claims 1 to 8, wherein, Said rotating shaft (2) comprises a long rotating shaft part and a short rotating shaft part which are detachably connected along the axial direction of said rotating shaft (2).
10. A hinge, characterized in that A damping assembly (100) according to any one of claims 1 to 9.