Hinge assembly, support device, electronic device assembly and foldable device

Abstract

The present application relates to the field of electronic equipment accessories, and aims to solve the problem that known hinges are difficult to balance simple structure and better rotation damping requirements, and provides a hinge assembly, a supporting device, an electronic equipment assembly and a foldable device. The hinge assembly includes a rotating shaft, a first blade and a second blade. The first blade includes a first blade plate and a first sleeve. The second blade includes a second blade plate and a second sleeve; the cutout of the second blade separates the second sleeve into a main sleeve and a side sleeve. The first sleeve is convexly provided with a matching groove, and the side sleeve is provided with a matching protrusion. In the first state, the matching protrusion is matched with the matching groove; in the second state, the matching protrusion and the matching groove are staggered in the circumferential direction, and the matching protrusion of the side sleeve is elastically pressed against the first sleeve. The beneficial effect of the present application is that it can provide better damping effect and the ability to maintain a flattened state.

Description

Technical Field

[0001] The present application relates to the field of electronic device accessories, and more specifically, to a hinge assembly, a supporting device, an electronic device assembly and a foldable device. Background Art

[0002] A hinge is a connection structure that can rotatably connect two components. A hinge has many application scenarios, for example, it is used between two supporting parts of a supporting accessory of an electronic device (such as a tablet) to meet different supporting requirements of the electronic device.

[0003] It is difficult for hinges of the prior art to achieve both a simple structure and better rotation damping. Summary of the invention

[0004] The present application provides a hinge assembly, a supporting device, an electronic device assembly and a foldable device to solve the problem that it is difficult for the known hinges to take into account both the requirements of simple structure and the requirements of better rotational damping.

[0005] In the first aspect, an embodiment of the present application provides a hinge assembly including a rotating shaft, a first blade and a second blade. The first blade includes a first blade plate and a first sleeve, the first sleeve is connected to the first blade plate; the first sleeve is sleeved on the rotating shaft; the first sleeve has a first mating end face. The second blade includes a second blade plate and a second sleeve, the second sleeve is connected to the second blade plate, the second sleeve is sleeved outside the rotating shaft and can rotate relative to the first sleeve; the second blade is provided with a cutout, the cutout separates the second sleeve into a main sleeve and a side sleeve, the main sleeve and the side sleeve are spaced apart along the axial direction of the rotating shaft; the side sleeve has a second mating end face. Among them, one of the first mating end face and the second mating end face is convexly provided with a mating protrusion, and the other of the first mating end face and the second mating end face is concavely provided with a mating groove. The hinge assembly has a first state and a second state, and can switch between the first state and the second state when the first blade and the second blade rotate relative to each other. In the first state, the mating protrusion is mated with the mating groove, and the first mating end face and the second mating end face are close to each other; in the second state, the mating protrusion and the mating groove are staggered along the circumferential direction, and the mating protrusion presses against one of the first mating end face and the second mating end face where the mating groove is provided, and the side sleeve elastically deviates from the first sleeve so that the side sleeve and the first sleeve elastically press against each other along the axial direction of the rotating shaft.

[0006] In the hinge assembly in the embodiment of the present application, during the relative rotation of the first blade and the second blade, the side sleeve undergoes elastic deformation that deviates from the first sleeve. The elastic deformation causes the side sleeve and the first sleeve to elastically press against each other along the axial direction of the rotating shaft to generate an elastic force. The elastic force creates friction between the side sleeve and the first sleeve, thereby providing additional damping for the relative rotation of the first blade and the second blade, which helps the hinge assembly to hover at a desired angle.

[0007] Furthermore, when the hinge assembly is in the first state, that is, the first blade and the second blade rotate relative to each other until the mating protrusion is mated with the mating groove, the first blade and the second blade can remain locked in the current state. For example, by properly arranging the positions of the mating protrusion and the mating groove, when the hinge assembly is in the flattened state (referring to the state where the first blade and the second blade are coplanar), the mating protrusion is just inserted into the mating groove, so that the hinge assembly can be locked in the first state in the flattened state through the mating of the mating groove and the mating protrusion.

[0008] In a possible implementation manner, a radial gap is provided between the inner circumferential surface of the side sleeve and the outer surface of the rotating shaft.

[0009] In this embodiment, by providing a radial gap, the side sleeve can be allowed to deflect relative to the rotating shaft.

[0010] In a possible implementation manner, the main sleeve is rotatably sleeved outside the rotating shaft component, and an interference fit is formed between the main sleeve and the rotating shaft component.

[0011] In this embodiment, the main sleeve and the rotating shaft can provide relative rotation damping.

[0012] In a possible implementation manner, the main sleeve is provided with a notch, the notch passes through the main sleeve along the axial direction of the rotating shaft, and the notch passes through the inner circumference and the outer circumference of the main sleeve.

[0013] In this embodiment, the notch allows the main sleeve to expand or shrink in the circumferential direction to accommodate the holding of the rotating shaft, thereby increasing the service life of the main sleeve.

[0014] In a possible implementation, the cross section of the main sleeve is in the shape of a major arc, and the main sleeve includes an arc-shaped cylinder wall and a plane cylinder wall, which are connected along the circumferential direction; the arc-shaped cylinder wall is connected to the second blade, the plane cylinder wall is perpendicular to the second blade, and the notch is provided in the plane cylinder wall. The rotating shaft has a matching shaft section, the cross section of the matching shaft section is in the shape of a major arc, and the diameter of the major arc of the cross section of the matching shaft section is greater than the diameter of the major arc of the cross section of the inner hole of the main sleeve.

[0015] In this embodiment, when the hinge assembly is in the flattened first state, the major arc of the mating shaft segment and the major arc of the inner hole of the main sleeve exactly correspond to each other, thereby further improving the stability of the hinge assembly in the first state.

[0016] When the hinge assembly needs to change from the first state to the second state, the major arc of the mating shaft segment and the major arc of the inner hole of the main sleeve gradually stagger. At this time, a sufficiently large external force needs to be provided to make the arc-shaped cylinder wall and the plane cylinder wall open sufficiently large to accommodate the staggered mating shaft segment. In this way, the mating damping between the main sleeve and the rotating shaft is large enough to improve the damping feeling.

[0017] In a possible implementation, there are multiple main sleeves, and the multiple main sleeves are sequentially arranged along the axial direction of the rotating shaft, and the multiple main sleeves are respectively interference-fitted with the rotating shaft.

[0018] In this embodiment, the total length of the plurality of main sleeves covering the rotating shaft is greater, which can provide greater damping for the relative rotation between the second blade and the rotating shaft.

[0019] In a possible embodiment, the cutout penetrates the second blade along the thickness direction of the second blade plate. The cutout extends from one side of the second sleeve into the second blade plate; the second blade plate includes a substrate body, a main body and a side swing arm, the main body is connected between the substrate body and the main sleeve, the side swing arm is connected between the substrate body and the side sleeve, and the cutout is located between the main body and the side swing arm. The extension direction of the cutout intersects perpendicularly or obliquely with the axial direction of the rotating shaft, or the cutout extends along a straight line, an arc line or a broken line.

[0020] In this embodiment, the cutout goes deep into the second blade, which can provide a longer side swing arm, thereby facilitating the lateral elastic deformation of the side sleeve relative to the base plate body.

[0021] In a possible implementation, there are two cutouts, and the two cutouts are respectively located on both sides of the second blade in the axial direction of the rotating shaft. The two cutouts separate the second sleeve into a main sleeve and two side sleeves, and the two side sleeves are respectively located on both sides of the main sleeve. There are two first sleeves, and the two first sleeves are spaced apart along the axial direction of the rotating shaft. The second sleeve is located between the two first sleeves, and the two side sleeves cooperate with the two first sleeves respectively along the axial direction of the rotating shaft.

[0022] In this embodiment, when the main sleeve is held by the rotating shaft, the two side sleeves can be symmetrically offset, so that the overall force of the second sleeve is balanced. In addition, the two side sleeves cooperate with the two first sleeves to provide greater rotation damping.

[0023] In a possible implementation manner, in the first state, the first blade and the second blade are coplanar.

[0024] In this embodiment, the hinge assembly can be maintained in the unfolded state under the cooperation of the matching protrusion and the matching groove.

[0025] In a possible implementation, there are multiple matching protrusions, the multiple matching protrusions are evenly distributed along the circumference, the number of matching grooves is equal to the number of matching protrusions, and the multiple matching grooves are evenly distributed along the circumference.

[0026] In this embodiment, the cooperation of the plurality of cooperation protrusions and cooperation grooves can provide greater rotation damping.

[0027] In a possible implementation, the mating protrusion is provided on the second mating end surface, and the mating groove is provided on the first mating end surface. In the circumferential direction, the protruding height of the mating protrusion gradually decreases from the middle to both sides, and both sides of the mating protrusion along the circumferential direction are tangent to the second mating end surface respectively. The shape of the mating groove is adapted to the mating protrusion.

[0028] In this embodiment, the smooth arrangement of the matching protrusion and the matching groove facilitates the matching protrusion and the matching groove to automatically match into place when they are close to each other.

[0029] In a possible embodiment, the rotating shaft member includes a shaft portion and a shaft cap, and the shaft cap is connected to one end of the shaft portion. The shaft cap is provided with a first insert tooth protruding near one end of the shaft portion, and the first sleeve has a second insert tooth extending in the axial direction. The first sleeve is sleeved outside the shaft portion, and the first insert tooth and the second insert tooth are plug-fitted and abut against each other in the circumferential direction. An interference fit is formed between the main sleeve and the shaft portion so that they can rotate relative to each other, and a radial gap is provided between the inner circumferential surface of the side sleeve and the outer surface of the shaft portion.

[0030] In this embodiment, axial positioning and circumferential mutual limitation can be achieved through the cooperation of the first insert tooth and the second insert tooth.

[0031] In a second aspect, an embodiment of the present application provides a support device, which includes a first support plate, a second support plate and the aforementioned hinge assembly. The first support plate is connected to the first blade plate. The second support plate is connected to the second blade plate.

[0032] The supporting device of the embodiment of the present application adopts the aforementioned hinge assembly, and thus has better rotation damping and first state locking function.

[0033] In a possible implementation, the support device is used to support an electronic device, the electronic device has a front and a back facing each other, the front is used for display, and the back includes a first surface area and a second surface area. The first support plate is configured to be able to overlap and connect to the first surface area, and the second support plate can rotate relative to the first support plate to overlap with the second surface area or form a set intersection angle with the second surface area. Wherein, when the second support plate overlaps with the second surface area, the matching protrusion is matched in the matching groove.

[0034] In this embodiment, the supporting device can be reliably maintained in the first unfolded state in the flattened state.

[0035] In a possible implementation, the electronic device is provided with a first magnetic attraction member, the first magnetic attraction member is located at the first surface area, and the hinge assembly further includes a second magnetic attraction member, the second magnetic attraction member is located at the first support plate, and is used for magnetic attraction connection to the first magnetic attraction member.

[0036] In this embodiment, the hinge assembly can be conveniently connected to or separated from the electronic device.

[0037] In a possible implementation, the support device further includes a connecting sleeve. There are two hinge assemblies, the rotating shafts of the two hinge assemblies are coaxially sleeved on both ends of the connecting sleeve, and the first sleeves of the two hinge assemblies are respectively abutted against both ends of the connecting sleeve along the circumferential direction.

[0038] In this embodiment, the connecting sleeve can realize synchronous rotation of the two hinge assemblies.

[0039] In a third aspect, an embodiment of the present application provides an electronic device assembly, which includes an electronic device and the aforementioned support device. The first support plate is configured to be connected to the electronic device, and the second support plate can be rotated relative to the first support plate to overlap the electronic device or to form a set angle with the electronic device.

[0040] In the embodiment of the present application, the electronic device assembly uses the aforementioned supporting device to support the electronic device, which is beneficial to the use or display of the electronic device.

[0041] In a fourth aspect, an embodiment of the present application provides a foldable device, which includes a first body, a second body and the aforementioned hinge assembly. The first body is connected to a first blade. The second body is connected to a second blade.

[0042] In the embodiment of the present application, the foldable device adopts the aforementioned hinge assembly, and thus has better rotation damping and first state locking function. BRIEF DESCRIPTION OF THE DRAWINGS

[0043] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without creative work.

[0044] Figure 1 A schematic structural diagram of an electronic device component in a usage state according to an embodiment of the present application;

[0045] Figure 2 for Figure 1 A schematic diagram of the structure of the electronic device component when it is in another use state;

[0046] Figure 3 for Figure 1 A schematic structural diagram of an electronic device assembly using a supporting device of another embodiment;

[0047] Figure 4 for Figure 3 A schematic diagram of the structure of the electronic device component when it is in another use state;

[0048] Figure 5 for Figure 1 A schematic diagram of the structure of the supporting device in FIG.

[0049] Figure 6 for Figure 5 A bottom view of the supporting device;

[0050] Figure 7 for Figure 1 A schematic structural diagram of another embodiment of the supporting device;

[0051] Figure 8 for Figure 7 A bottom view of the supporting device;

[0052] Fig. 9 A three-dimensional diagram of a hinge assembly according to an embodiment of the present application in a first unfolded state;

[0053] Fig.10 for Fig. 9 An exploded view of a hinge assembly;

[0054] Fig.11 for Fig.10 A magnified image of point A;

[0055] Fig.12 for Fig.10 A magnified view of point B;

[0056] Fig.13 9 is a three-dimensional diagram of the hinge assembly in a second state;

[0057] Fig.14 for Fig.13 Enlarged view of point C;

[0058] Fig.15 for Fig. 9 A front view of a hinge assembly;

[0059] Fig.16 for Fig.15 Cross-section along line DD;

[0060] Fig.17 for Fig.15 Cross-section along line EE;

[0061] Fig.18 for Fig.17 A cross-sectional view of another embodiment of the main sleeve in FIG.

[0062] Fig.19 for Figure 5 A schematic diagram of the structure of two hinge assemblies and a connecting sleeve used in the supporting device;

[0063] Fig. 20 for Fig.19A partial enlarged view of

[0064] Fig.21 for Fig. 9 A schematic structural diagram of the back side of the hinge assembly;

[0065] Fig. 22 A structural schematic diagram of another implementation of the hinge assembly of the embodiment of the present application;

[0066] Fig.23 A structural schematic diagram of another implementation of the hinge assembly of the embodiment of the present application;

[0067] Fig.24 A structural schematic diagram of another implementation of the hinge assembly of the embodiment of the present application;

[0068] Fig.25 A structural schematic diagram of another implementation of the hinge assembly of the embodiment of the present application;

[0069] Fig.26 A schematic diagram of the structure of a foldable electronic device according to an embodiment of the present application.

[0070] Description of main component symbols:

[0071] Electronic device assembly 100

[0072] Electronic equipment 110

[0073] Display 111

[0074] Back shell 112

[0075] The first magnetic attraction member 113

[0076] Support device 120

[0077] Part 121

[0078] First supporting plate 121a

[0079] Part 2122

[0080] Second supporting plate 122a

[0081] Part 3123

[0082] The second magnetic attraction member 124

[0083] Package 125

[0084] Hinge assembly 200, 200a, 200b, 200c, 200d

[0085] First blade 10

[0086] The first blade 11

[0087] First sleeve 12

[0088] Second insert 13

[0089] Second blade 20

[0090] Second blade 21

[0091] substrate body 21a

[0092] Main board body 21b

[0093] Side swing arm 21c

[0094] Second sleeve 22

[0095] Main sleeve 22a

[0096] Side sleeve 22b

[0097] Curved cylinder wall 221

[0098] Plane wall 222

[0099] Matching protrusion 23

[0100] Rotating shaft 30

[0101] Shaft cap 31

[0102] Shaft 32

[0103] Matching shaft segment 32a

[0104] First insert 33

[0105] Connecting sleeve 40

[0106] The third insert 43

[0107] Strip 50

[0108] Front P1

[0109] Back side P2

[0110] First surface area P21

[0111] Second surface area P22

[0112] First mating end surface P3

[0113] Top surface area P31

[0114] First transition area P32

[0115] Second mating end surface P4

[0116] Bottom area P41

[0117] Second transition area P42

[0118] Contact area S1

[0119] Incision C1

[0120] Cut-off groove C2

[0121] Matching groove C3

[0122] Missing slot C4

[0123] Through hole K1

[0124] Radial clearance f1

[0125] Axis L1

[0126] Dashed line L2

[0127] Foldable Devices 300

[0128] First body 310

[0129] Second body 320

[0130] Table 500 DETAILED DESCRIPTION

[0131] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments.

[0132] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may also be a centered element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may also be a centered element. When an element is considered to be "set on" another element, it may be directly set on the other element or there may also be a centered element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0133] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present application. The terms used herein in the specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. The term "or / and" used herein includes any and all combinations of one or more related listed items.

[0134] Some embodiments of the present application are described in detail. In the absence of conflict, the following embodiments and features of the embodiments can be combined with each other.

[0135] Example

[0136] See also Figure 1 and Figure 2 This embodiment provides an electronic device assembly 100 , which includes an electronic device 110 and a supporting device 120 .

[0137] The electronic device 110 may be a tablet computer, a mobile phone, a smart screen, etc. The support device 120, as an accessory of the electronic device 110, may support and / or protect the electronic device 110. The electronic device assembly 100 composed of the electronic device 110 and the support device 120 may facilitate the use or display of the electronic device 110.

[0138] The electronic device 110 (such as a tablet computer) has a front side P1 and a back side P2 opposite to each other. The front side P1 of the electronic device 110 is provided with a display screen 111 for realizing functions such as display, touch, and buttons. The back side P2 of the electronic device 110 may be the outer surface of the rear shell 112 of the electronic device 110.

[0139] In this embodiment, the supporting device 120 includes two parts that can rotate relative to each other (named as a first part 121 and a second part 122 respectively), so that the supporting device 120 can support the electronic device 110 in different states to adapt to different usage scenarios.

[0140] like Figure 1 As shown, the support device 120 is in a flattened state, and the first portion 121 and the second portion 122 of the support device 120 are both overlapped on the back side P2 of the electronic device 110. At this time, the electronic device assembly 100 is more suitable for handheld use.

[0141] Since the first part 121 and the second part 122 overlap the back surface P2 of the electronic device 110, the support device 120 can protect the back surface P2 of the electronic device 110 from being scratched. In addition, a contact area S1 can be set in the area where the first part 121 or the second part 122 needs to contact the hand. The contact area S1 can be set as an area with functions such as anti-slip, anti-fingerprint, and providing a soft feel as needed.

[0142] like Figure 2As shown, the support device 120 is in a partially folded state, the first part 121 of the support device 120 is overlapped on the back side P2 of the electronic device 110, and the second part 122 is rotated relative to the first part 121 in a direction away from the electronic device 110 by a set angle α (such as α=60°). At this time, the support device 120 can support the electronic device 110 at an angle, and the user can place the electronic device assembly 100 on the table 500 for viewing or operation (such as touch operation, handwriting operation, etc.).

[0143] In this embodiment, the support device 120 and the electronic device 110 may be detachably connected (eg, magnetically connected), so that the user may remove the support device 120 from the electronic device 110 to use the electronic device 110 alone.

[0144] In the electronic device assembly 100 of this embodiment, the first part 121 is configured to be connected to the back side P2 of the electronic device 110. For example, the back side P2 of the electronic device 110 corresponds to the area of ​​the first part 121 (defined as the first surface area P21) and is provided with one or more first magnetic members 113, and the first part 121 is provided with one or more second magnetic members 124. Through the magnetic attraction of the first magnetic members 113 and the second magnetic members 124, the first part 121 can be overlapped and connected to the back side P2 of the electronic device 110, and can also be removed from the electronic device 110.

[0145] The first magnetic member 113 and the second magnetic member 124 may both be magnets, or one of the first magnetic member 113 and the second magnetic member 124 may be a magnet and the other may be an iron-based alloy that can be attracted by a magnet. The first magnetic member 113 may be disposed inside the electronic device 110, or may be served by the rear shell 112 of the electronic device 110. For example, the second magnetic member 124 may be a magnet, the rear shell 112 of the electronic device 110 may be made of an iron-based alloy as a whole or partially embedded with an iron-based alloy, and the area of ​​the rear shell 112 corresponding to the second magnetic member 124 may serve as the first magnetic member 113.

[0146] In other embodiments, the first portion 121 may also be connected to the electronic device 110 by snapping, bonding or other forms, which are not limited here.

[0147] In some known technologies, Figure 1In the state, the support device 120 is located below the electronic device 110. When the user holds the first part 121 without holding the second part 122, the second part 122 is easily separated downward from the area of ​​the back P2 of the electronic device 110 corresponding to the second part 122 (defined as the second surface area P22) due to its own weight, affecting the handheld use experience of the electronic device assembly 100. For this reason, in other known technologies, components that can be magnetically attracted to each other are also provided in the second part 122 and the second surface area P22 of the electronic device 110 to circumvent this problem. However, this will further increase the weight of the electronic device 110 and / or the support device 120, affecting the use experience.

[0148] The supporting device 120 provided in this embodiment has Figure 1 In the state, the second part 122 can remain superimposed on the back surface P2 of the electronic device 110 when not directly connected to the electronic device 110 (magnetic attraction or snap connection, etc.), which is convenient to use and conducive to the lightweight design of the electronic device 110 and the supporting device 120. The specific implementation method will be exemplified below.

[0149] Of course, in other embodiments, the second portion 122 and the second surface area P22 may also be configured to be magnetically attracted. In this case, the magnetic attraction of the second portion 122 and the second surface area P22 can provide additional force to further ensure that Figure 1 In this state, the second part 122 is not easily separated from the electronic device 110 due to its own weight.

[0150] See also Figure 3 and Figure 4 In another embodiment, the supporting device 120 further includes a third part 123, which is rotatably connected to a side of the second part 122 away from the first part 121. For example, a flexible material is used at the connection between the third part 123 and the second part 122 so that the third part 123 and the second part 122 can rotate relative to each other.

[0151] See also Figure 3 When the electronic device 110 is not in use, the first portion 121 and the second portion 122 together cover the back surface P2 of the electronic device 110 , and the third portion 123 covers the front surface P1 of the electronic device 110 to protect the display screen 111 of the electronic device 110 .

[0152] See also Figure 4In one usage state of the electronic device 110, the third part 123 is horizontally supported on the table 500, the first part 121 is connected (such as magnetically connected) to the back side P2 of the electronic device 110, and the second part 122 is obliquely connected to the first part 121 and the third part 123 respectively, so that the second part 122 is obliquely supported on the back side P2 of the electronic device 110, which is convenient for the user to watch or operate the electronic device 110.

[0153] Figure 5 is a schematic structural diagram of the supporting device 120 in the embodiment of the present application when it is in an unfolded state, Figure 6 for Figure 5 Bottom view of .

[0154] See also Figure 5 and Figure 6 In this embodiment, the support device 120 includes a first support plate 121a, a second support plate 122a and a hinge assembly 200. The first support plate 121a and the second support plate 122a are respectively connected to the two sides of the hinge assembly 200, and the first support plate 121a and the second support plate 122a can rotate relative to each other through the hinge assembly 200. The number of the hinge assembly 200 can be one or more. Optionally, as Figure 5 As shown in FIG. 2 , there are two hinge assemblies 200 , and the two hinge assemblies 200 are connected via a connecting sleeve 40 .

[0155] Figure 5 and Figure 6 In the illustrated embodiment, the first support plate 121a and the second support plate 122a respectively serve as the first part 121 and the second part 122 of the support device 120. Optionally, the first support plate 121a is provided with a through hole K1 to avoid blocking optical components such as a camera of the electronic device 110.

[0156] See also Figure 7 and Figure 8 In other embodiments, the support device 120 further includes a sleeve 125, which covers the first support plate 121a, the hinge assembly 200, and the second support plate 122a. The portion of the sleeve 125 covering the first support plate 121a and the first support plate 121a together serve as the first portion 121 of the support device 120, and the portion of the sleeve 125 covering the second support plate 122a and the second support plate 122a together serve as the second portion 122 of the support device 120. The position of the sleeve 125 corresponding to the through hole K1 of the first support plate 121a also needs to be opened.

[0157] In some embodiments, the first support plate 121a and the second support plate 122a are made of a harder material (such as a harder plastic plate, a wooden plate, an aluminum alloy plate, etc.) to provide a better support effect; the cover 125 is made of a softer material (such as leather, silicone, etc.) to provide a better contact feel and avoid hindering the relative rotation of the first support plate 121a and the second support plate 122a.

[0158] Optionally, the inner surface of the cover 125 is bonded to the outer surface of the first support plate 121a, and the inner surface of the cover 125 is bonded to the outer surface of the second support plate 122a, so as to improve the integrity of the support device 120 and prevent the cover 125 from moving relative to the first support plate 121a or the second support plate 122a when the first part 121 and the second part 122 rotate relative to each other.

[0159] Of course, in other embodiments, the cover 125 and the first support plate 121 a or the second support plate 122 a may not be bonded together.

[0160] See also Fig. 9 and Fig.10 In this embodiment, the hinge assembly 200 includes a rotating shaft 30, a first blade 10 and a second blade 20. The first blade 10 and the second blade 20 are connected by the rotating shaft 30 so as to be relatively rotatable.

[0161] Optionally, the first blade 10 and the second blade 20 can be processed and formed by using Metal Powder Injection Molding (MIM) technology, which can obtain higher strength than stamping and increase the service life of the hinge assembly 200.

[0162] When the first blade 10 and the second blade 20 rotate relative to each other, the hinge assembly 200 can switch between its first state and the second state.

[0163] Among them, see Fig. 9 In the first state, the first leaf 10 and the second leaf 20 of the hinge assembly 200 are relatively flattened, and the support device 120 is correspondingly in a flattened state (see Figure 1 , Figure 5 or Figure 7 ).

[0164] In the second state, the first leaf 10 and the second leaf 20 of the hinge assembly 200 form a set angle (such as an angle less than 180°, such as 120°, 150°, etc.), and the support device 120 is correspondingly in a partially folded state (see Figure 2 or Figure 4 ).

[0165] In order to realize the relative rotation of the first blade 10 and the second blade 20, in this embodiment, the shaft member 30 and the first blade 10 are relatively fixed, and the second blade 20 is rotatably connected to the shaft member 30. In this way, when the second blade 20 rotates relative to the shaft member 30, the second blade 20 can rotate relative to the first blade 10.

[0166] In other embodiments, the rotating shaft 30 and the second blade 20 may be relatively fixed, and the first blade 10 may be rotatably connected to the rotating shaft 30 .

[0167] In other embodiments, the first blade 10 may be rotatably connected to the rotating shaft 30 , and the second blade 20 may be rotatably connected to the rotating shaft 30 .

[0168] Continue to see Fig. 9 and Fig.10 In this embodiment, the rotating shaft 30 includes a shaft portion 32 and a shaft cap 31, and the shaft cap 31 is connected to one axial end of the shaft portion 32. The diameter of the shaft cap 31 is larger than that of the shaft portion 32, and the shaft cap 31 can be used for end decoration to cover the internal structure, and can also be used to achieve axial limitation of the first blade 10 and / or the second blade 20.

[0169] Continue to see Fig. 9 and Fig.10 In this embodiment, the first blade 10 includes a first blade plate 11 and a first sleeve 12, and the first sleeve 12 is connected to the first blade plate 11. The first sleeve 12 is sleeved on the rotating shaft member 30, for example, the first sleeve 12 and the rotating shaft member 30 form a clearance fit or a transition fit. Optionally, there are two first sleeves 12, and the two first sleeves 12 are spaced apart along the axial direction of the rotating shaft member 30 (referring to the extension direction of the axis L1 of the rotating shaft member 30), and are respectively sleeved outside the shaft portion 32 of the rotating shaft member 30.

[0170] Optionally, one of the first sleeves 12 directly or indirectly abuts against the shaft cap 31 in the axial direction, thereby achieving axial limitation of the first blade 10 and the rotating shaft 30 .

[0171] Continue to see Fig. 9 and Fig.10 The second blade 20 includes a second blade plate 21 and a second sleeve 22 . The second sleeve 22 is connected to the second blade plate 21 . The second sleeve 22 is sleeved outside the rotating shaft 30 and is located between the two first sleeves 12 .

[0172] The second blade 20 is provided with a cutout C1, which penetrates the second blade 20 along the thickness direction of the second blade plate 21 to separate the second sleeve 22 into a main sleeve 22a and a side sleeve 22b. The extending direction of the cutout C1 is perpendicular to the axial direction of the rotating shaft member 30, and the main sleeve 22a and the side sleeve 22b are spaced apart along the axial direction of the rotating shaft member 30. The cutout C1 can provide space for the axial deformation of the side sleeve 22b.

[0173] Optionally, the cutout C1 extends from one side of the second sleeve 22 into the second blade 21, but does not penetrate the second blade 21. The second blade 21 includes a substrate body 21a, a main board body 21b and a side swing arm 21c, the main board body 21b is connected between the substrate body 21a and the main sleeve 22a, the side swing arm 21c is connected between the substrate body 21a and the side sleeve 22b, and the cutout C1 is located between the main board body 21b and the side swing arm 21c. It should be noted that the second blade 21 can be an integrally formed part (such as integrally formed by MIM technology), and its substrate body 21a, main board body 21b and side swing arm 21c are all different parts of the second blade 21. For ease of understanding, Fig.10 In the figure, the base body 21a and the main body 21b as well as the base body 21a and the side swing arm 21c are schematically divided by a dotted line L2.

[0174] The cutting depth h of the incision C1 of this embodiment can be set as needed. For example, when greater damping is required, the cutting depth h of the incision C1 can be set to be smaller. At this time, the length of the side swing arm 21c is shorter, and the side swing arm 21c has greater structural rigidity, and a greater force is required to push it to drive the side sleeve 22b to undergo elastic deformation along the axial direction.

[0175] The bottom of the cutout C1 (ie, the end of the cutout C1 away from the second sleeve 22 ) may be configured to be in an arc shape to avoid stress concentration and cracking at that location.

[0176] In other embodiments, the extending direction of the cutout C1 may also be set to be obliquely intersecting with the axial direction of the rotating shaft 30. The cutout C1 may be set to extend along a straight line (such as Fig.10 ), and can also be set to extend along an arc or a broken line, which is not limited here.

[0177] like Fig. 9 and Fig.10 As shown in the figure, there are two cutouts C1, which separate the second sleeve 22 into a main sleeve 22a and two side sleeves 22b. The two side sleeves 22b are respectively located on both sides of the main sleeve 22a and correspond to the two first sleeves 12 along the axis direction of the rotating shaft 30. The two side sleeves 22b cooperate with the two first sleeves 12 to provide greater rotation damping. Optionally, the two side sleeves 22b are arranged symmetrically, so that when the main sleeve 22a is held by the rotating shaft 30, the two side sleeves 22b can be symmetrically offset, so that the overall force of the second sleeve 22 is balanced.

[0178] In this embodiment, the two cutouts C1 are respectively located near the two sides of the second blade 20 in the axial direction of the rotating shaft 30, so that the main sleeve 22a has a larger axial extension length (referring to the length extending in the axial direction of the rotating shaft 30), while the side sleeve 22b has a shorter axial extension length. In this way, the longer main sleeve 22a can hold the rotating shaft 30 more stably, while the shorter side sleeve 22b is conducive to increasing the angle of elastic deflection of the main sleeve 22a from the first sleeve 12 in the axial direction under the compression of the first sleeve 12, so as to provide greater damping.

[0179] Continue to see Fig. 9 and Fig.10 In this embodiment, optionally, a cutout groove C2 is provided on one side of the side sleeve 22b away from the main sleeve 22a along the axial direction of the rotating shaft 30, and the first sleeve 12 at least partially extends into the cutout groove C2.

[0180] The arrangement of the cutout groove C2 can make the axial extension length of the side sleeve 22b smaller than the axial extension length of the side swing arm 21c, that is, the side swing arm 21c can maintain a larger axial extension length to maintain a larger elastic deformation damping; at the same time, the side sleeve 22b can maintain a smaller axial extension length, which is conducive to enabling the side sleeve 22b to deflect a larger angle relative to the rotating shaft member 30 without being blocked by the rotating shaft member 30. In addition, the cutout groove C2 accommodates at least a portion of the first sleeve 12, which can also reduce the total axial length occupied by the hinge assembly 200, which is conducive to making the hinge assembly 200 more compact.

[0181] Continue to see Fig. 9 and Fig.10 In this embodiment, the first sleeve 12 has a first mating end surface P3, and the first mating end surface P3 is concavely provided with a mating groove C3. The first mating end surface P3 and the mating groove C3 can also be seen in Fig.11 The first mating end surface P3 may be a plane perpendicular to the axis L1 of the rotating shaft 30, and the mating groove C3 is formed inwardly from the first mating end surface P3. The number of the mating grooves C3 may be one or more.

[0182] The side sleeve 22b has a second mating end surface P4, and the second mating end surface P4 is provided with a mating protrusion 23. The second mating end surface P4 and the mating protrusion 23 can also be seen in Fig.12 The second mating end surface P4 may be a plane perpendicular to the axis L1 of the rotating shaft 30, and the mating protrusion 23 is formed by protruding from the second mating end surface P4. The number of the mating protrusions 23 may be one or more, and the number of the mating protrusions 23 is the same as the mating grooves C3, and the shape of the mating grooves C3 is adapted to (the same or substantially the same as) the mating protrusions 23.

[0183] See also Fig.11 and Fig.12Optionally, there are two mating protrusions 23 and two mating grooves C3, and they are distributed at 180° respectively.

[0184] In other embodiments, the number of the mating protrusion 23 and the mating groove C3 may be one or more than three, which is not limited here. When there are multiple mating protrusions 23 and mating grooves C3, the multiple mating grooves C3 and the multiple mating protrusions 23 are evenly distributed along the circumferential direction.

[0185] Continue to see Fig.11 and Fig.12 In the circumferential direction of the side sleeve 22b, the protruding height of the mating protrusion 23 (referring to the height of the protruding second mating end face P4) gradually decreases from the middle of the mating protrusion 23 to both sides, and the two sides of the mating protrusion 23 along the circumferential direction are respectively tangent to the second mating end face P4, so that the mating protrusion 23 and the second mating end face P4 have a smooth transition; correspondingly, in the circumferential direction of the first sleeve 12, the recessed depth of the mating groove C3 (referring to the recessed depth from the first mating end face P3) gradually decreases from the middle of the mating groove C3 to both sides, and the two sides of the mating groove C3 along the circumferential direction are respectively tangent to the first mating end face P3, so that the mating groove C3 and the first mating end face P3 have a smooth transition.

[0186] Optionally, the mating protrusion 23 has a top surface area P31 and two first transition surface areas P32, and the two first transition surface areas P32 are respectively smoothly transitioned between the top surface area P31 and the first mating end surface P3. Similarly, the mating groove C3 has a bottom surface area P41 and two second transition surface areas P42, and the two second transition surface areas P42 are respectively smoothly transitioned between the bottom surface area P41 and the second mating end surface P4.

[0187] In this embodiment, by properly setting the positions of the mating protrusion 23 and the mating groove C3, when the hinge assembly 200 is in the first state (such as the unfolded state), the mating protrusion 23 is exactly mated in the mating groove C3. When the hinge assembly 200 is in the second state (partially folded state), the mating protrusion 23 and the mating groove C3 are staggered along the circumferential direction, that is, the mating protrusion 23 moves out of the mating groove C3 and abuts against the first mating end surface P3 of the first sleeve 12 (see Fig.13 and Fig.14 In the second state, the side sleeve 22 b undergoes elastic deformation to deviate from the first sleeve 12 , and the elastic deformation causes the side sleeve 22 b and the first sleeve 12 to elastically press against each other along the axial direction of the rotating shaft 30 .

[0188] During the process of the hinge assembly 200 changing from the first state to the second state, the first sleeve 12 and the side sleeve 22b rotate relative to each other, so that the mating protrusion 23 gradually moves out of the mating groove C3 and abuts against the first mating end surface P3 of the first sleeve 12. During this process, the mating protrusion 23 and the side sleeve 22b are displaced away from the first sleeve 12 along the axial direction of the rotating shaft 30. To achieve this displacement, the side swing arm 21c connected to the side sleeve 22b needs to undergo elastic deformation relative to the base plate 21a of the second blade 21, that is, there is an elastic damping between the side sleeve 22b and the first sleeve 12. Therefore, in order to change the hinge assembly 200 from the first state to the second state, the user needs to apply a force to the first blade 10 and / or the second blade 20 that is not less than the force required for the above-mentioned elastic deformation. Therefore, the hinge assembly 200 can be relatively stably maintained in the first state and is not easily affected by interference forces (such as the deadweight of the second part 122 of the support device 120, see Figure 1 Of course, when the user actively applies a force or torque on the first blade 10 and / or the second blade 20, and the force or torque is large enough to overcome the elastic damping, the first blade 10 and the second blade 20 can be relatively rotated to a desired angle, and the hinge assembly 200 changes to the second state.

[0189] In addition, optionally, when the hinge assembly 200 is in the first expanded state, the first mating end face P3 and the second mating end face P4 can be arranged to contact and press against each other, and the mating protrusion 23 and the bottom surface of the mating groove C3 can also contact and press against each other. A larger contact area can provide greater friction resistance, thereby providing greater friction damping between the side sleeve 22b and the first sleeve 12.

[0190] Thus, when the hinge assembly 200 is in the first state, the elastic damping and friction damping mentioned above can exist simultaneously between the side sleeve 22b and the first sleeve 12, so that the hinge assembly 200 can be kept in the first state more stably. Since the hinge assembly 200 in this embodiment can provide greater damping, when the hinge assembly 200 is used for the support device 120, only a small number (such as two groups) of hinge assemblies 200 are needed to meet the support requirements of the support device 120, thereby reducing the structural complexity and cost of the support device 120.

[0191] See also Fig.13 and Fig.14When the hinge assembly 200 is in the second state, the first sleeve 12 and the side sleeve 22b rotate relative to each other, and the mating protrusion 23 of the side sleeve 22b presses against the first mating end surface P3 of the first sleeve 12, so that there is a certain friction damping between the side sleeve 22b and the first sleeve 12. Due to the existence of the friction damping, the hinge assembly 200 can realize the hovering function in the second state, that is, the support device 120 using the hinge assembly 200 can realize supporting the electronic device 110 at any angle within a certain range (see Figure 2 ).

[0192] Of course, the total damping of the hinge assembly 200 in the second state can be set to be smaller than the total damping of the hinge assembly 200 in the first state, so that the hinge assembly 200 has a better user experience.

[0193] See again Fig.13 and Fig.14 When the user applies force to change the hinge assembly 200 from the second state to the first state, the top surface area P31 (visible in Fig.12 ) is rotated to any second transition surface area P42 (which can be seen in Fig.11 ), the elastic force between the side sleeve 22b and the first sleeve 12 can make the matching protrusion 23 automatically slide along the second transition surface area P42 into the bottom surface area P41 corresponding to the matching groove C3 (as can be seen in Fig.11 ) position, so that the mating protrusion 23 is completely mated into the mating groove C3, and the hinge assembly 200 enters the first state. That is, due to the arc transition setting of the mating protrusion 23 and the mating groove C3, when the hinge assembly 200 changes from the second state to a position close to the first state (such as less than 5° apart), the mating of the mating protrusion 23 and the mating groove C3 can guide the hinge assembly 200 to automatically enter the first state, thereby improving the user experience.

[0194] For example, it can be configured that when the angle between the first blade 11 and the second blade 21 is greater than or equal to 175°, the hinge assembly 200 can automatically slide into the first state in which the hinge assembly 200 is unfolded. When the angle between the first blade 11 and the second blade 21 is less than 175°, the hinge assembly 200 remains in the second state.

[0195] In some embodiments, when the hinge assembly 200 is in the flattened first state, there is a certain gap between the mating protrusion 23 and the mating groove C3 without direct contact, or although they are in contact, there is no axial elastic force between the two or the elastic force is small. At this time, the hinge assembly 200 is easier to fold or unfold near the flattened first state (such as near 2°-3°), but when the hinge assembly 200 needs to change from the first state near 2°-3° to completely exit the first state and enter the second state, the damping will still be increased due to the elastic force brought by the axial elastic deformation of the side sleeve 22b.

[0196] In other embodiments, the arrangement positions of the mating protrusion 23 and the mating groove C3 may also be exchanged, that is, the mating protrusion 23 is arranged on the first sleeve 12, and the mating groove C3 is arranged on the side sleeve 22b.

[0197] See also Fig.15 and Fig.16 In this embodiment, a radial gap f1 is provided between the inner circumferential surface of the side sleeve 22b and the outer surface of the rotating shaft member 30. That is, the diameter of the inner hole of the side sleeve 22b is larger than the diameter of the rotating shaft member 30. In this way, the rotating shaft member 30 is not likely to hinder the deflection of the side sleeve 22b along the axial direction of the rotating shaft member 30. Optionally, the radial gap f1 is larger than 0.4 mm, so that the rotating shaft member 30 can be deflected at a larger angle, thereby providing greater elastic damping.

[0198] In this embodiment, the main sleeve 22 a is rotatably sleeved on the rotating shaft 30 , and an interference fit is formed between the main sleeve 22 a and the rotating shaft 30 .

[0199] For example Fig.17 As shown in FIG. 1 , the main sleeve 22a is provided with a notch C4 (also shown in FIG. Fig.12 ), the notch C4 penetrates the main sleeve 22a along the axial direction of the rotating shaft 30, and the notch C4 penetrates the inner circumference and the outer circumference of the main sleeve 22a in the radial direction. When the rotating shaft 30 is not engaged, the diameter of the inner hole of the main sleeve 22a is slightly smaller than the diameter of the rotating shaft 30, for example, the diameter of the inner hole of the main sleeve 22a is 0.2-0.5mm smaller than the diameter of the rotating shaft 30. In this way, when the shaft portion 32 of the rotating shaft 30 is engaged in the main sleeve 22a, the main sleeve 22a is elastically expanded by the rotating shaft 30, so that the main sleeve 22a elastically hugs the rotating shaft 30, thereby forming friction damping between the main sleeve 22a and the rotating shaft 30. The friction damping can further improve the rotation damping of the hinge assembly 200.

[0200] And, in Fig.17In the illustrated embodiment, the cross section of the main sleeve 22a is in the shape of a major arc (i.e., an arc with a center angle greater than 180°, or a truncated circle), and the main sleeve 22a includes an arcuate cylinder wall 221 and a plane cylinder wall 222, and the arcuate cylinder wall 221 and the plane cylinder wall 222 are connected along the circumferential direction; the arcuate cylinder wall 221 is connected to the second blade 21, the plane cylinder wall 222 is perpendicular to the second blade 21, and the slot C4 is provided in the plane cylinder wall 222. The rotating shaft member 30 has a matching shaft segment 32a, the cross section of the matching shaft segment 32a is in the shape of a major arc, and the diameter of the major arc of the cross section of the matching shaft segment 32a is greater than the diameter of the major arc of the cross section of the inner hole of the main sleeve 22a. Among them, the matching shaft segment 32a can refer to a section of the shaft portion 32 of the rotating shaft member 30 used to match the main sleeve 22a. The cross section of the matching shaft segment 32a can be consistent with or inconsistent with the other parts of the shaft portion 32.

[0201] Optionally, when the hinge assembly 200 is in the flattened first state, the major arc of the mating shaft segment 32a and the major arc of the inner hole of the main sleeve 22a correspond exactly to each other (i.e., arc segments correspond to arc segments, and straight segments correspond to straight segments). In this way, the stability of the hinge assembly 200 in the first state can be further improved.

[0202] When the hinge assembly 200 needs to change from the first state to the second state, the major arc of the mating shaft segment 32a and the major arc of the inner hole of the main sleeve 22a are gradually offset. At this time, a sufficiently large external force needs to be provided to open the arc-shaped cylinder wall 221 and the plane cylinder wall 222 sufficiently to accommodate the offset mating shaft segment 32a. In this way, the mating damping between the main sleeve 22a and the rotating shaft 30 is large enough to improve the damping feeling.

[0203] See also Fig.18 In another embodiment, the inner hole of the main sleeve 22a can also be set as a circular hole, and the cross section of the matching shaft section 32a of the rotating shaft member 30 can be circular or arc-shaped. In addition, the inner hole diameter of the main sleeve 22a is also set to be slightly smaller than the rotating shaft member 30, so that the main sleeve 22a and the rotating shaft member 30 form an interference fit. Of course, in this embodiment, the main sleeve 22a can also be provided with a slot C4 to enable it to have the ability to elastically expand or reduce.

[0204] See also Fig.19 and Fig. 20 The supporting device 120 provided in this embodiment (can be seen in Figure 5 ), there are two hinge assemblies 200, and a connecting sleeve 40 is connected between the two hinge assemblies 200. The rotating shafts 30 of the two hinge assemblies 200 are coaxially sleeved on both ends of the connecting sleeve 40, and the first sleeves 12 of the two hinge assemblies 200 close to the connecting sleeve 40 are respectively abutted against the two ends of the connecting sleeve 40 along the circumferential direction. For example, the rotating shafts 30 of the two hinge assemblies 200 are respectively inserted into the inner holes of the connecting sleeve 40.

[0205] Optionally, the shaft cap 31 of the rotating shaft member 30 is provided with a first inserting tooth 33 (also shown in Fig. 9 or Fig.10 ), the first sleeve 12 has a second tooth 13 extending along the axial direction of the shaft member 30. The first sleeve 12 is sleeved outside the shaft portion 32, and the first tooth 33 and the second tooth 13 are plugged and matched and abut each other in the circumferential direction. The number of the first tooth 33 and the second tooth 13 can be multiple, and the multiple first teeth 33 are matched in the spacing grooves between the second teeth 13, and the multiple second teeth 13 are matched in the spacing grooves between the first teeth 33, so as to achieve the circumferential abutment between the first teeth 33 and the second teeth 13. In this way, the shaft member 30 and the first blade 10 in this embodiment are relatively fixed without relative rotation. Combined with the rotational cooperation of the second blade 20 relative to the shaft member 30, the rotation of the second blade 20 relative to the first blade 10 can be achieved.

[0206] The third inserting teeth 43 are respectively provided at two axial ends of the connecting sleeve 40 , and the third inserting teeth 43 are plug-fitted with the second inserting teeth 13 on the first sleeve 12 close to one side of the connecting sleeve 40 to achieve circumferential mutual abutment.

[0207] In this embodiment, the connecting sleeve 40 can not only realize the axial limitation of the two hinge assemblies 200, but also keep the first blades 10 of the two hinge assemblies 200 in a coplanar state without circumferential relative deflection.

[0208] See also Fig.21 Optionally, a rubber strip 50 is provided on one side of the first blade plate 11 of the first blade 10, and the first blade plate 11 is connected to the first support plate 121a (as can be seen in Figure 5 ) is bonded. A rubber strip 50 is provided on one side of the second blade plate 21 of the second blade 20. The second blade plate 21 is bonded to the second support plate 122a (see FIG. 1 ) by the rubber strip 50. Figure 5 ) bonding.

[0209] In other embodiments, the first blade 11 and the first support plate 121a may be connected by screw connection, clamping or the like, and the second blade 21 and the second support plate 122a may be connected by screw connection, clamping or the like.

[0210] Fig. 22 A hinge assembly 200 a according to another embodiment of the present application is shown.

[0211] See also Fig. 22 The hinge assembly 200a is composed of Fig.15 The hinge assembly 200 shown is improved, and the hinge assembly 200a and Fig.15The difference between the hinge assembly 200 and the hinge assembly 200a is that the second blade 20 has only one cutout C1, and the second sleeve 22 of the second blade 20 is divided into a main sleeve 22a and a side sleeve 22b by the cutout C1. The side sleeve 22b and one of the first sleeves 12 of the first blade 10 adopt the same Fig.15 The mating protrusion 23 and the mating groove C3 of the hinge assembly 200 in the same mating manner cooperate with each other to realize the hovering function and state locking function of the hinge assembly 200a.

[0212] In the hinge assembly 200a, the main sleeve 22a of the second blade 20 abuts against the other first sleeve 12 of the first blade 10 along the axial direction of the rotating shaft 30, and the end surfaces of the main sleeve 22a and the first sleeve 12 in contact can be both set as planes perpendicular to the axis of the rotating shaft 30. In this way, the main sleeve 22a and the first sleeve 12 are axially limited, so that when the first blade 10 and the second blade 20 rotate relative to each other, the main sleeve 22a and the second blade 21 do not change their axial positions, and only the side sleeve 22b is deflected and deformed at a small angle along the axial direction to provide elastic damping.

[0213] Fig.23 A hinge assembly 200b according to another embodiment of the present application is shown.

[0214] See also Fig.23 The hinge assembly 200b is composed of Fig.15 The hinge assembly 200 shown is improved, and the hinge assembly 200b and Fig.15 The difference between the hinge assembly 200 in the embodiment is that in the hinge assembly 200b, there are multiple main sleeves 22a of the second blade 20, and the multiple main sleeves 22a are sequentially arranged at intervals along the axial direction and respectively form interference fits with the rotating shaft member 30. The total length of the multiple main sleeves 22a covering the rotating shaft member 30 is larger, which can provide greater damping for the relative rotation between the second blade 20 and the rotating shaft member 30. The number and spacing of the main sleeves 22a can be set as needed and are not limited here.

[0215] Fig.24 A hinge assembly 200c according to another embodiment of the present application is shown.

[0216] See also Fig.24 The hinge assembly 200c is composed of Fig.15 The hinge assembly 200 shown is improved, and the hinge assembly 200c and Fig.15The difference between the hinge assembly 200 in the embodiment is that the width of the cutout C1 of the hinge assembly 200c (referring to the dimension extending along the axis direction of the rotating shaft 30) is larger, and the first sleeve 12 fits in the cutout C1, that is, the first sleeve 12 is sandwiched between the main sleeve 22a and the side sleeve 22b. Optionally, the main sleeve 22a and the first sleeve 12 abut against each other in the axial direction, and the first sleeve 12 and the side sleeve 22b are connected by a groove such as Fig.15 The hinge assembly 200 adopts the cooperation of the matching protrusion 23 and the matching groove C3 to realize the hovering function and state locking function of the hinge assembly 200c.

[0217] Fig.25 A hinge assembly 200d according to another embodiment of the present application is shown.

[0218] See also Fig.25 The hinge assembly 200d is composed of Fig.15 The hinge assembly 200 shown is improved, and the hinge assembly 200d and Fig.15 The difference between the hinge assembly 200 and the hinge assembly 200d is that the depth of the cutout C1 of the hinge assembly 200d is smaller. In this case, the elastic force required for the axial displacement of the side sleeve 22b is greater, thereby providing a greater damping force.

[0219] The aforementioned hinge assembly 200 a , hinge assembly 200 b , hinge assembly 200 c , and hinge assembly 200 d may replace the hinge assembly 200 for the aforementioned supporting device 120 and electronic device assembly 100 .

[0220] See also Fig.26 This embodiment also provides a foldable device 300, which is, for example, a flip watch, a laptop computer, a flip phone or other flip device.

[0221] The foldable device 300 includes a first body 310, a second body 320 and the aforementioned hinge assembly 200. The first body 310 and the second body 320 are connected together by the hinge assembly 200 so as to be relatively rotatable, so as to be relatively folded or unfolded. When connected, the first body 310 can be connected to the first leaf 10 of the hinge assembly 200, and the second body 320 can be connected to the second leaf 20 of the hinge assembly 200.

[0222] Since the foldable device 300 adopts the aforementioned hinge assembly 200, it also has better opening and closing damping, hovering and state locking functions.

[0223] Optionally, in the foldable device 300, there are two hinge assemblies 200, and a connecting sleeve 40 (also see Fig.19 ).

[0224] For example, when the foldable device 300 is a laptop computer, the first body 310 may be the base portion of the laptop computer, which includes a motherboard, a battery, a keyboard assembly, etc. The second body 320 may be the screen portion of the laptop computer, which mainly includes a computer screen, a camera, etc.

[0225] For another example, when the foldable device 300 is a flip phone, the first body 310 is the main body of the flip phone, and the second body 320 is the flip part of the flip phone.

[0226] The aforementioned hinge assembly 200 a , hinge assembly 200 b , hinge assembly 200 c , and hinge assembly 200 d may replace the hinge assembly 200 for the aforementioned foldable device 300 .

[0227] The above implementation modes are only used to illustrate the technical solutions of the present application and are not intended to limit the present application. Although the present application has been described in detail with reference to the above preferred implementation modes, a person skilled in the art should understand that the technical solutions of the present application may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present application.

Claims

1. A hinge assembly, characterized in that: include: Rotating shaft; The first blade comprises a first blade plate and a first sleeve, wherein the first sleeve is connected to the first blade plate; the first sleeve is sleeved on the rotating shaft; the first sleeve has a first matching end surface; and, The second blade comprises a second blade plate and a second sleeve, wherein the second sleeve is connected to the second blade plate, and the second sleeve is sleeved outside the rotating shaft and can rotate relative to the first sleeve; the second blade is provided with a cutout, and the cutout separates the second sleeve into a main sleeve and a side sleeve, and the main sleeve and the side sleeve are spaced apart along the axial direction of the rotating shaft; the side sleeve has a second mating end surface; Wherein, one of the first mating end surface and the second mating end surface is convexly provided with a mating protrusion, and the other of the first mating end surface and the second mating end surface is concavely provided with a mating groove; The hinge assembly has a first state and a second state, and can switch between the first state and the second state when the first blade and the second blade rotate relative to each other; In the first state, the mating protrusion is mated with the mating groove, and the first mating end face and the second mating end face are close to each other; in the second state, the mating protrusion and the mating groove are staggered in the circumferential direction, and the mating protrusion presses against one of the first mating end face and the second mating end face on which the mating groove is provided, and the side sleeve undergoes elastic deformation deviating from the first sleeve, so that the side sleeve and the first sleeve are elastically pressed against each other along the axial direction of the rotating shaft.

2. The hinge assembly according to claim 1, characterized in that: A radial gap is provided between the inner circumferential surface of the side sleeve and the outer surface of the rotating shaft.

3. The hinge assembly according to claim 1, characterized in that: The main sleeve is rotatably sleeved outside the rotating shaft, and an interference fit is formed between the main sleeve and the rotating shaft.

4. The hinge assembly according to claim 3, characterized in that: The main sleeve is provided with a notch, the notch passes through the main sleeve along the axial direction of the rotating shaft, and the notch passes through the inner circumference and the outer circumference of the main sleeve.

5. The hinge assembly according to claim 4, characterized in that: The cross section of the main sleeve is in a major arc shape, and the main sleeve includes an arc-shaped cylinder wall and a plane cylinder wall, and the arc-shaped cylinder wall and the plane cylinder wall are connected along the circumferential direction; the arc-shaped cylinder wall is connected to the second blade plate, the plane cylinder wall is perpendicular to the second blade plate, and the notch is provided in the plane cylinder wall; The rotating shaft has a matching shaft section, the cross section of which is in the shape of a major arc, and the diameter of the major arc of the cross section of the matching shaft section is greater than the diameter of the major arc of the cross section of the inner hole of the main sleeve.

6. The hinge assembly according to claim 3, characterized in that: There are a plurality of main sleeves, and the plurality of main sleeves are sequentially arranged along the axial direction of the rotating shaft, and the plurality of main sleeves are respectively interference-fitted with the rotating shaft.

7. The hinge assembly according to claim 1, characterized in that: The cutout penetrates the second blade along the thickness direction of the second blade plate; The cutout extends from one side of the second sleeve into the second blade; the second blade includes a base plate, a main plate and a side swing arm, the main plate is connected between the base plate and the main sleeve, the side swing arm is connected between the base plate and the side sleeve, and the cutout is located between the main plate and the side swing arm; The extending direction of the incision is perpendicular or obliquely intersecting with the axial direction of the rotating shaft, or the incision extends along a straight line, an arc line or a broken line.

8. The hinge assembly according to claim 1, characterized in that: There are two cutouts, and the two cutouts are respectively located on both sides of the second blade in the axial direction of the rotating shaft; The two cutouts separate the second sleeve into a main sleeve and two side sleeves, and the two side sleeves are respectively located on both sides of the main sleeve; There are two first sleeves, and the two first sleeves are spaced apart along the axis direction of the rotating shaft; The second sleeve is located between the two first sleeves, and the two side sleeves are matched with the two first sleeves respectively along the axial direction of the rotating shaft.

9. The hinge assembly according to claim 1, characterized in that: In the first state, the first blade and the second blade are coplanar.

10. The hinge assembly according to claim 1, characterized in that: There are a plurality of the mating protrusions, and the plurality of the mating protrusions are evenly distributed along the circumferential direction. The number of the mating grooves is equal to the number of the mating protrusions, and the plurality of the mating grooves are evenly distributed along the circumferential direction.

11. The hinge assembly according to claim 1, characterized in that: The matching protrusion is provided on the second matching end surface, and the matching groove is provided on the first matching end surface; In the circumferential direction, the protruding height of the mating protrusion gradually decreases from the middle to both sides, and both sides of the mating protrusion along the circumferential direction are tangent to the second mating end surface respectively; The shape of the matching groove is matched with the matching protrusion.

12. The hinge assembly according to claim 1, characterized in that: The rotating shaft member comprises a shaft portion and a shaft cap, wherein the shaft cap is connected to one end of the shaft portion; The shaft cap is provided with a first inserting tooth protruding near one end of the shaft portion, and the first sleeve has a second inserting tooth extending in the axial direction; The first sleeve is sleeved outside the shaft portion, and the first inserting teeth and the second inserting teeth are plug-fitted and abut against each other along the circumferential direction; An interference fit that allows for relative rotation is formed between the main sleeve and the shaft portion, and a radial gap is provided between the inner circumferential surface of the side sleeve and the outer surface of the shaft portion.

13. A supporting device, characterized in that: include: The hinge assembly according to any one of claims 1 to 12; A first supporting plate connected to the first blade plate; The second supporting plate is connected to the second blade plate.

14. The supporting device according to claim 13, characterized in that: The supporting device is used to support an electronic device, the electronic device has a front side and a back side facing each other, the front side is used for display, and the back side includes a first surface area and a second surface area; The first support plate is configured to be able to overlap and connect to the first surface area, and the second support plate can rotate relative to the first support plate to overlap with the second surface area or to form a set intersection angle with the second surface area; Wherein, when the second support plate and the second surface area are overlapped, the matching protrusion is matched in the matching groove.

15. The supporting device according to claim 14, characterized in that: The electronic device is provided with a first magnetic attraction component, and the first magnetic attraction component is located at the first surface area; The hinge assembly also includes a second magnetic member, which is located at the first support plate and is used for being magnetically connected to the first magnetic member.

16. The supporting device according to claim 13, characterized in that: The supporting device also includes a connecting sleeve; There are two hinge assemblies, the rotating shafts of the two hinge assemblies are coaxially sleeved on the two ends of the connecting sleeve, and the first sleeves of the two hinge assemblies are respectively abutted against the two ends of the connecting sleeve along the circumferential direction.

17. An electronic device assembly, characterized in that: include: Electronic equipment; The support device according to any one of claims 13 to 16; the first support plate is configured to be connectable to the electronic device, and the second support plate can be rotated relative to the first support plate to overlap with the electronic device or to form a set angle with the electronic device.

18. A foldable device, characterized in that: include: The hinge assembly according to any one of claims 1 to 12; A first body connected to the first blade; The second body is connected to the second blade.

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