Folding electronic equipment and hinge structure thereof

Abstract

The utility model relates to the technical field of folding electronic equipment, in particular to folding electronic equipment and a hinge structure thereof. The hinge structure comprises a body, a screen supporting piece, a first swing connecting piece and a second swing connecting piece. The screen supporting piece comprises a first plate body and a second plate body; the end, close to the second plate body, of the first plate body is arranged on the second plate body in a swinging and rotating mode. The first swinging connecting piece is connected with the first plate body through a connecting rod transmission structure or a cam transmission structure and is used for driving the first plate body to swing when the first swinging connecting piece swings, so that the first plate body is forced to be obliquely arranged when the flexible screen is completely folded; and a deformation avoiding space is constructed for the folded part of the flexible screen. The flexible screen folding device is ingenious in design and convenient to implement, and in the folding process, an inverted-horn-shaped deformation avoiding space is formed for the folded part of the flexible screen, so that the flexible screen is in a water drop shape in the space, and the situation that the folded part is completely folded and damaged is avoided.

Description

Technical Field

[0001] This utility model relates to the field of foldable electronic device technology, and in particular to a foldable electronic device and its hinge structure. Background Technology

[0002] Foldable electronic devices, such as foldable phones and tablets, use hinge structures to fold and unfold the screen. The hinge structure not only needs to support the weight of the screen but also needs to maintain its flatness and stability during folding and unfolding. Furthermore, due to the high frequency of use of foldable electronic devices, the durability of the hinge structure is also an important consideration. However, the hinge structure previously submitted by the applicant has areas for improvement, particularly in how to form a teardrop-shaped folding structure, so that the folded part of the flexible screen is bent in a teardrop shape, thereby preventing damage to the flexible screen. This application discloses a hinge structure with a teardrop-shaped folding structure. Utility Model Content

[0003] The purpose of this invention is to provide a foldable electronic device and its hinge structure to solve at least one technical problem existing in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides a foldable electronic device hinge structure, including: a body, a screen support, a first swing connector and a second swing connector;

[0005] The screen support is used to install and support the flexible screen;

[0006] The screen support includes a first plate (small door panel) located near the folded part of the flexible screen, and a second plate (large door panel) located away from the folded part.

[0007] One end of the first sway connector and the second sway connector are respectively rotatably mounted on the main body; the other end of the second sway connector is pivotally connected to the second plate; the second plate is provided with a insertion groove; the other end of the first sway connector can be slidably inserted into the insertion groove; the second plate is rotatably mounted on the main body through the first sway connector and the second sway connector.

[0008] The first plate is rotatably mounted on the second plate at one end near the second plate; the first swaying connector is connected to the first plate through a cam transmission structure, which drives the first plate to sway when the first swaying connector sways, thereby forcing the first plate to tilt when the flexible screen is fully folded, thus creating a deformation avoidance space for the folded part of the flexible screen.

[0009] This application has a simple structure, which splits the screen support into a first plate and a second plate. During the folding process, an inverted trumpet-shaped deformation avoidance space is formed for the folded part of the flexible screen, so that the flexible screen is teardrop-shaped in the space, avoiding the folded part from being completely folded and damaged.

[0010] Furthermore, the cam transmission structure includes a slide groove provided on the first plate and a pin provided on the first swing connector, the pin being slidably inserted into the slide groove; during the swinging process of the first swing connector and the second plate, the pin slides relative to the slide groove, and at the same time, the slide groove forces the first plate to swing relative to the second plate.

[0011] Furthermore, it also includes a grooved plate that is vertically and fixedly connected to the bottom surface of the first plate; the grooved plate is provided with the sliding groove.

[0012] Furthermore, it also includes a swivel base; the swivel base is rotatably mounted on the main body; the second plate is fixedly connected to the swivel base; the swivel base is provided with the insertion slot.

[0013] Furthermore, the first plate is connected to the swing seat via a pivot structure;

[0014] The pivot structure includes an arc-shaped guide groove or guide block provided on the first plate or the swing seat, and an arc-shaped guide block or guide groove provided on the swing seat or the first plate.

[0015] The guide block is slidably inserted into the guide groove to achieve the pivot connection between the two components.

[0016] Of course, pivoting structures can also be oscillating structures such as shafts and holes.

[0017] Preferably, it further includes a base fixedly connected to the bottom surface of the first plate, and the base is provided with the guide groove or guide block.

[0018] Preferably, the two sets of pivotal structures are arranged opposite to each other at both ends of the first plate.

[0019] Furthermore, on the cross-section perpendicular to the virtual swing center line of the first plate, the arc-shaped guide groove or guide block has an arc of π / 4 to π.

[0020] More preferably, the arc-shaped guide groove or guide block has an arc radius of π / 3 to 2π / 3. Therefore, the entire pivot structure has a small semi-circular cross-section, resulting in a thinner and lighter structure.

[0021] Furthermore, the first sway connector and / or the sway seat are provided with an overlapping working surface, and the other end of the first plate away from the second plate overlaps and abuts against the overlapping working surface.

[0022] Furthermore, on the cross-section perpendicular to the virtual swing center line of the first plate, the cross-sectional shape of the overlapping working surface matches the movement trajectory of the other end of the first plate during the swing process; that is, during the swing process, the other end of the first plate away from the second plate slides along the overlapping working surface.

[0023] That is, during the folding process of the flexible screen, the overlapping working surface can always provide support for the other end of the first plate.

[0024] Preferably, the overlapping working surfaces are all located on the first swaying connector or all located on the swaying seat;

[0025] Alternatively, the overlapping working surface may be partially disposed on the first sway connector and partially disposed on the sway seat.

[0026] Furthermore, in the horizontally unfolded state of the flexible screen, the first screen mounting surface on the first plate is flush with the second screen mounting surface on the second plate.

[0027] Furthermore, the second swing connector is bent as a whole to prevent the entire second swing connector from protruding (or not higher than) the first screen mounting surface on the first plate during the entire process from the horizontal unfolding of the flexible screen to its complete folding.

[0028] That is, the second swing connector needs to be designed to avoid any protrusion from the first screen mounting surface at any swing position. This is to prevent the second swing connector from protruding from the first screen mounting surface at any position and touching or damaging the flexible screen.

[0029] Furthermore, the screen support includes a left screen support and a right screen support arranged symmetrically on the left and right sides; the left screen support and the right screen support are respectively rotatably mounted on the body through two sets of the first sway connectors and the second sway connectors.

[0030] When the flexible screen is fully folded, the two second screen mounting surfaces on the second plates on the left and right sides are arranged in parallel and spaced apart (the flexible screens on the two second screen mounting surfaces can contact each other), and the gap between the two first screen mounting surfaces on the first plates on the left and right sides is arranged in a funnel shape (or wedge shape) with a smaller top and a larger bottom.

[0031] Furthermore, when the flexible screen is fully folded, the included angle between the two first screen mounting surfaces on the first plate on the left and right sides is 1-80°.

[0032] Typically, the width of the first plate is relatively smaller than that of the second plate. For example, the width of the first plate is 1-10mm, which only needs to meet the requirement that the folded part of the flexible screen will not be damaged or deformed.

[0033] The body described in this application can be a single component or a component, providing an installation basis for the installation or interconnection of components such as the first plate, the second plate, and the synchronization component.

[0034] Furthermore, the second plate includes a left plate and a right plate arranged symmetrically on the left and right sides; a synchronization component is provided between the left plate and the right plate to realize synchronous rotation of the left plate and the right plate in opposite directions; the left plate and the right plate are respectively rotatably connected to the main body through two sets of left and right arranged first sway connectors and second sway connectors.

[0035] Furthermore, the second swaying connector has an arc-shaped rotating part at one end that is swayingly connected to the main body; the rotating part is integrally formed with the connecting arm; one end of the connecting arm is fixedly connected to the rotating part, and the other end is hinged to the second plate.

[0036] The synchronization component includes a synchronization transmission element; the synchronization transmission element is disposed on the body and can only reciprocate along the virtual swing center line of the first plate.

[0037] The rotating part includes a left rotating part disposed on the second swing connector on the left side and a right rotating part disposed on the second swing connector on the right side; a helical transmission pair is disposed between the rotating part and the synchronous transmission member to realize the conversion and transmission between the swing motion of the second plate and the rotating part and the linear motion of the synchronous transmission member; the left helical transmission pair between the left rotating part and the synchronous transmission member has the opposite helical direction to the right helical transmission pair between the right rotating part and the synchronous transmission member, and is used to realize the synchronous opposite or synchronous reverse swing of the left and right plates.

[0038] The second aspect of this application discloses a foldable electronic device with the aforementioned hinge structure.

[0039] By adopting the above technical solution, this utility model has the following beneficial effects:

[0040] This application provides a hinge structure and a foldable electronic device thereof, which is ingeniously designed and easy to implement. The screen support is divided into a first plate and a second plate. During the folding process, an inverted trumpet-shaped deformation avoidance space is formed for the folded part of the flexible screen, so that the flexible screen is teardrop-shaped in the space, avoiding the folded part from being completely folded and damaged. Attached Figure Description

[0041] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0042] Figure 1 This is a three-dimensional structural diagram of the hinge structure in Example 1;

[0043] Figure 2 for Figure 1 Exploded view;

[0044] Figure 3 A perspective view of the hinge structure after the second plate has been removed;

[0045] Figure 4 for Figure 3 Exploded view of the hinge mechanism;

[0046] Figure 5 This is a structural diagram showing the connection between the first and second swing connectors and the swing base in Embodiment 1.

[0047] Figure 6 This is a second perspective view of the connection structure between the first and second swing connectors and the swing base in Embodiment 1;

[0048] Figure 7 A schematic diagram showing the swing angle of the first plate when the hinge structure is folded to 45°.

[0049] Figure 8 A schematic diagram showing the swing angle of the first plate when the hinge structure is folded to 90°.

[0050] Figure 9 This is an exploded view of the connection structure between the first and second swing connectors and the swing base in the embodiment;

[0051] Figure 10 This is a perspective view of the groove plate in Example 1;

[0052] Figure 11 This is a perspective view of the base in Example 1;

[0053] Figure 12 This is a front view of the hinge structure after the second plate has been removed in Example 2;

[0054] Figure 13 for Figure 12 Sectional view of AA;

[0055] Figure 14 This is a partial structural diagram of the synchronization component in Example 2;

[0056] Figure 15 This is an exploded view of the synchronization component in Example 2;

[0057] Figure 16 This is a schematic diagram of the decomposition of the main body;

[0058] Figure 17 A three-dimensional view of the synchronous transmission components;

[0059] Figure 18 This is a three-dimensional view of the second swing connector.

[0060] Figure label:

[0061] 10-Main body; 11-Second base; 12-Half-shaft rod; 15-First base; 15a-Left rod; 15b-Right rod; 16-Groove; 19-Rear cover; 20-First plate; 20a-Guide block; 20b-Slide groove; 20c-First screen mounting surface; 21-Slot plate; 22-Base; 25-Second plate; 25b-Left plate; 25c-Right plate; 26-Swing seat; 26a-Insertion groove; 2 6b-Guide groove; 26c-Overlapping working surface; 26d-Second screen mounting surface; 30-First swing connector; 30b-Pin; 40-Second swing connector; 41-Rotating part; 45-Connecting arm; 50-Synchronous transmission part; 51-Slider structure; 52-Main body; 53-Tortoise; 54-Arm extension; 55-Long tail; 55a-Limiting protrusion; 60-Card plate; 61-Card slot; 70-Actuating spring. Detailed Implementation

[0062] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0063] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0064] The present invention will be further explained below with reference to specific embodiments.

[0065] Example 1

[0066] like Figure 1-10 As shown, this embodiment discloses the reference Figure 1 and Figure 2 As shown, the hinge structure of a foldable electronic device disclosed in this embodiment includes: a body 10, a screen support, a first swing connector 30, and a second swing connector 40.

[0067] The screen support is used to install and support the flexible screen; the screen support includes a first plate 20 (small door panel) located near the folded part of the flexible screen, and a second plate 25 (large door panel) located away from the folded part.

[0068] One end of the first sway connector 30 and the second sway connector 40 are respectively swayably mounted on the body 10; the other end of the second sway connector 40 is pivotally connected to the second plate 25; the second plate 25 is provided with a plug-in groove 26a; the other end of the first sway connector 30 is a plug-in end, the cross-sectional shape of which is a slider shape adapted to the plug-in groove 26a, and the plug-in end can be relatively slidably inserted into the plug-in groove 26a; the second plate 25 is swayably mounted on the body 10 through the first sway connector 30 and the second sway connector 40.

[0069] The first plate 20 is rotatably mounted on the second plate 25 at one end near the second plate 25; the first swaying connector 30 is connected to the first plate 20 through a linkage transmission structure or a cam transmission structure, which is used to drive the first plate 20 to sway when the first swaying connector 30 sways, thereby forcing the first plate 20 to tilt when the flexible screen is fully folded, thus creating a deformation avoidance space for the folded part of the flexible screen.

[0070] This application has a simple structure, which splits the screen support into a first plate 20 and a second plate 25. During the folding process, an inverted trumpet-shaped deformation avoidance space is formed for the folded part of the flexible screen, so that the flexible screen is teardrop-shaped in the space, avoiding the folded part from being completely folded and damaged.

[0071] See Figure 4 As shown, the cam transmission structure includes a slide groove 20b provided on the first plate 20 and a pin 30b provided on the first swing connector 30. The pin 30b is slidably inserted into the slide groove 20b. During the swinging process of the first swing connector 30 and the second plate 25, the pin 30b slides relative to the slide groove 20b, and at the same time, the slide groove 20b forces the first plate 20 to rotate relative to the second plate 25.

[0072] Alternatively, the cam drive structure described above can be replaced by a linkage drive structure, which includes an intermediate drive rod (not shown), with its two ends hinged to the first plate 20 and the first swing connector 30, respectively. During the swinging process of the first swing connector 30 along with the second plate 25, the first plate 20 is driven to rotate relative to the second plate 25 through the intermediate drive rod.

[0073] like Figure 9 and 10 As shown, this embodiment also includes a groove plate 21 that is vertically and fixedly connected to the bottom surface of the first plate 20; the groove plate 21 is provided with the aforementioned sliding groove 20b.

[0074] More preferably, such as Figure 5-10 As shown, this embodiment also includes a swivel base 26; the swivel base 26 is rotatably mounted on the main body 10; the second plate 25 is fixedly connected to the swivel base 26; the swivel base 26 is provided with a plug-in groove 26a. The other end of the first swivel connector 30 and the second swivel connector 40 is connected to the second plate 25 through the swivel base 26.

[0075] Specifically, the first plate 20 is connected to the swing seat 26 via a pivot structure. Preferably, the pivot structure includes an arc-shaped guide groove 26b or an arc-shaped guide block 20a provided on the first plate 20 or the swing seat 26, and an arc-shaped guide block 20a or an arc-shaped guide groove 26b provided on the swing seat 26 or the first plate 20. The guide block 20a is slidably inserted into the guide groove, realizing the pivot connection between the two components. Of course, the pivot structure can also be a swing structure such as a shaft and a hole.

[0076] Preferably, see Figure 11 As shown, this embodiment also includes a base 22 fixedly connected to the bottom surface of the first plate 20, and the base 22 is provided with a guide groove or guide block 20a.

[0077] Preferably, the two sets of pivotal structures are arranged opposite to each other at both ends of the first plate 20.

[0078] More preferably, on the cross-section perpendicular to the virtual pivot center line of the first plate 20, the arc-shaped guide groove 26b or guide block 20a has an arc of π / 4 to π. Even more preferably, the arc-shaped guide groove 26b or guide block 20a has an arc of π / 3 to 2π / 3. Thus, the entire pivot structure has a small semi-circular cross-section, resulting in a thinner and lighter structure.

[0079] Furthermore, the first sway connector 30 and / or the sway base 26 are provided with an overlapping working surface 26c, and the other end of the first plate 20 away from the second plate 25 overlaps and abuts against the overlapping working surface 26c. The basic requirement is that, at least in the horizontally unfolded state, the other end of the first plate 20 away from the second plate 25 overlaps and abuts against the overlapping working surface 26c, which can be a support platform on the first sway connector 30 or the sway base 26.

[0080] More preferably, on the cross-section perpendicular to the virtual swing center line of the first plate 20, the cross-sectional shape of the overlapping working surface 26c conforms to the movement trajectory of the other end of the first plate 20 during the swing process; that is, during the swing process, the other end of the first plate 20 away from the second plate 25 slides along the overlapping working surface 26c. In other words, during the flexible screen folding process, the overlapping working surface 26c can always provide support for the other end of the first plate 20.

[0081] Preferably, the overlapping working surface 26c is entirely disposed on the first swaying connector 30 or entirely disposed on the swaying seat 26; or, the overlapping working surface 26c may be partially disposed on the first swaying connector 30 and partially disposed on the swaying seat 26.

[0082] More preferably, in the horizontally unfolded state of the flexible screen, the first screen mounting surface 20c on the first plate 20 is flush with the second screen mounting surface 25a on the second plate 25. Furthermore, the second swing connector 40 is bent as a whole to prevent it from protruding (or being higher than) the first screen mounting surface 20c on the first plate 20 throughout the entire process from the horizontal unfolding of the flexible screen to its complete folding. That is, the second swing connector 40 is designed to avoid protruding from the first screen mounting surface 20c at any swing position, thus preventing it from touching or damaging the flexible screen.

[0083] Furthermore, the screen support includes a left screen support and a right screen support arranged symmetrically on the left and right sides; the left screen support and the right screen support are respectively rotatably mounted on the body 10 through two sets of first sway connectors 30 and second sway connectors 40.

[0084] like Figure 7 and 8As shown, in the fully folded state of the flexible screen, the two second screen mounting surfaces 25a on the left and right second plates 25 are arranged in parallel intervals (the flexible screens on the two second screen mounting surfaces 25a can contact each other), and the gap between the two first screen mounting surfaces 20c on the left and right first plates 20 is arranged in a funnel shape (or wedge shape) with a smaller gap at the top and a larger gap at the bottom. The included angle between the two first screen mounting surfaces 20c on the left and right first plates 20 is preferably 1-80°. Typically, the width of the first plate 20 is relatively smaller than that of the second plate 25, such as 1-10mm, which only needs to meet the requirement that the folded part of the flexible screen is not damaged or deformed.

[0085] In this application, the body 10 can be a single component or an assembly, providing an installation basis for the installation or interconnection of components such as the first plate 20, the second plate 25, and the synchronization assembly.

[0086] The second aspect of this application discloses a foldable electronic device with the aforementioned hinge structure.

[0087] The technical solution of this embodiment is ingeniously designed and easy to implement. The screen support is divided into a first plate and a second plate. During the folding process, an inverted trumpet-shaped deformation avoidance space is formed for the folded part of the flexible screen, so that the flexible screen is teardrop-shaped in the space, avoiding the folded part from being completely folded and damaged.

[0088] Example 2

[0089] This embodiment is basically the same as Embodiment 1, except that:

[0090] See Figure 2 As shown, the second plate 25 includes a left plate 25b and a right plate 25c arranged symmetrically from left to right; that is, the second plate on the left screen support is the left plate 25b; and the second plate on the right screen support is the right plate 25c. See also... Figure 5 As shown, a synchronization component is provided between the left plate 25b and the right plate 25c to enable the left plate 25b and the right plate 25c to rotate synchronously in opposite directions; the left plate 25b and the right plate 25c are rotatably connected to the body 10 through two sets of left and right arranged first sway connectors 30 and second sway connectors 40 respectively.

[0091] See Figure 12-18 As shown, the second swing connector 40 is connected to the synchronization component to achieve synchronized movement of the left plate 25b and the right plate 25c. Similarly, the first swing connector 30 can also be connected to the synchronization component to achieve synchronized movement of the mechanisms on both sides.

[0092] See Figure 13As shown, the second swaying connector 40 has an arc-shaped rotating part 41 at one end that is sway-connected to the main body 10; the rotating part 41 is integrally formed with the connecting arm 45; that is, the second swaying connector 40 includes the rotating part 41 and the connecting arm 45; one end of the connecting arm 45 is fixedly connected to the rotating part 41, and the other end is hinged to the second plate 25. Specifically, the other end of the connecting arm 45 is pivotally connected through the swaying seat 26; the second plate 25 is fixed on the swaying seat 26.

[0093] The synchronization component includes a synchronization transmission element 50; the synchronization transmission element 50 is disposed on the body 10 and can only reciprocate along the virtual swing center line of the first plate 20.

[0094] The rotating part 41 includes a left rotating part 41a disposed on the left second swing connector 40 and a right rotating part 41b disposed on the right second swing connector 40. A helical transmission pair is provided between the rotating part 41 and the synchronous transmission member 50 to realize the conversion and transmission between the swing motion of the second plate 25 and the rotating part 41 and the linear motion of the synchronous transmission member 50. The left helical transmission pair between the left rotating part 41a and the synchronous transmission member 50 has the opposite helical direction to the right helical transmission pair between the right rotating part 41b and the synchronous transmission member 50, so as to realize the synchronous swing of the left plate 25b and the right plate 25c in opposite directions (such as realizing the synchronous swing of the left plate 25b and the right plate 25c in counterclockwise and clockwise directions respectively, and the synchronous swing during the opening and closing process).

[0095] See Figure 17 and 18 As shown, in this embodiment, the helical transmission pair includes a helical groove 42 provided on the rotating part 41 or the synchronous transmission member 50, and a helical slider structure 51 (i.e. a protruding limiting and transmission structure) provided on the synchronous transmission member 50 or the rotating part 41. The slider structure 51 can be relatively slidably inserted into the helical groove 42 to realize the transmission between the rotating part 41 and the synchronous transmission member 50.

[0096] When the rotating part 41 of the second swing connector 40 on one side rotates, the synchronous transmission member 50 is forced to move in the axial direction of the virtual rotation axis of the rotating part 41 through the helical transmission pair on that side. Then, the rotating part 41 on the other side is made to rotate synchronously in opposite directions through the helical transmission pair on the other side, so as to realize the synchronous swing of the rotating parts 41 on both sides and the entire second swing connector 40. That is, the left rotating part 41a and the right rotating part 41b on both sides (as well as the first swing connector 30 and the second swing connector 40 on both sides) realize synchronous reverse or opposite swing through the synchronous transmission member 50 in the middle, so as to realize the synchronous opening and closing action.

[0097] See Figure 17As shown, the synchronous transmission component 50 includes a main body 52; the main body 52 includes a middle torso 53 and two arm spans 54 on both sides; a helical transmission pair is provided between the arm spans 54 and the rotating part 41.

[0098] More preferably, the synchronous transmission component 50 includes a long tail 55, which is rod-shaped and relatively fixedly disposed at the tail (or one end) of the body 53; the body 53 and the long tail 55 are arranged along the swing center line.

[0099] A temporary locking structure is provided between the long tail portion 55 and the main body 10 to temporarily limit the left plate 25b and the right plate 25c, as well as the left rotating part 41a and the right rotating part 41b, to one or more predetermined opening and closing angles. The temporary locking structure includes: a limiting protrusion 55a provided on the long tail portion 55 or the main body 10, and a slot 61 provided on the main body 10 or the long tail portion 55 to engage with the limiting protrusion 55a.

[0100] See Figure 14-15 As shown, the main body 10 is also provided with a locking plate 60 and an actuating spring 70; the locking plate 60 is slidably mounted on the main body 10; the locking plate 60 is provided with a locking groove 61.

[0101] The spring 70 is positioned between the locking plate 60 and the body 10, tending to force the locking plate 60 to abut against the long tail 55, thereby maintaining the locking state of the limiting protrusion 55a and the locking groove 61. The limiting protrusion 55a is locked in the locking groove 61, so that the hinge structure is temporarily maintained at a set opening and closing angle.

[0102] Preferably, the long tail 55 is provided with symmetrical limit protrusions 55a or slots 61 on the left and right sides; two sets of locking plates 60 and actuating springs 70 are respectively arranged symmetrically on the left and right sides of the long tail 55; the two locking plates 60 on the left and right sides tend to move towards the middle under the action of the actuating springs 70, thereby clamping the long tail 55 and maintaining the locking state of the limit protrusions 55a and slots 61.

[0103] Furthermore, the limiting protrusion 55a and the slot 61 are provided with smooth transition structures such as chamfers, rounded edges or curved slopes at both ends in the direction of the swing center line, which are used to guide the limiting protrusion 55a into the slot 61.

[0104] Due to the smooth transition structure, the limiting protrusion 55a and the slot 61 are generally trapezoidal in shape. When the electronic device unfolds to near commonly used opening and closing angles such as 120 degrees, 180 degrees, or 360 degrees, the transition structure, under the elasticity of the spring actuation spring 70 or the limiting protrusion 55a itself, can guide the limiting protrusion 55a into the slot 61, allowing the hinge structure to continue to slowly swing to the set opening and closing angles of 120 degrees, 180 degrees, or 360 degrees. When external force is used to overcome the elastic force of the spring actuation spring 70 or the material, the temporary locking structure can be released, allowing the electronic device to continue opening and closing.

[0105] More preferably, this embodiment also includes a return spring (not shown), which is disposed between the synchronous transmission member 50 and the body 10, and tends to force the synchronous transmission member 50 to move and reset along the swing center line. The placement of the return spring can tend to force the slider structure 51 in the helical transmission pair to abut against the fixed side of the helical groove 42, thereby reducing or eliminating the positioning error caused by the gap between the slider structure 51 and the helical groove 42.

[0106] Furthermore, in the direction of the swing center line of the second swing connector 40, the length of the slot 61 is greater than the width of the limiting protrusion 55a, and the slot 61 is provided with a movable allowance, allowing the limiting protrusion 55a to move along the slot 61 within the movable allowance range. Preferably, the opening and closing angle of the left rotating part 41a and the right rotating part 41b corresponding to the size of the movable allowance is 1-10°.

[0107] With the allowable movement combined with the reset spring 71, users can fold electronic devices to a wider range of opening and closing angles when folding them. The hinge structure, through the reset spring 71, can automatically restore the opening and closing angle to the nearest set opening and closing angle. For example, if the opening and closing angle is between 0-10°, the hinge structure can automatically reset to the set 0°, greatly improving the user experience.

[0108] In this application, the body 10 can be a single component or an assembly, providing a mounting base for the installation or interconnection of components such as the second plate 25 and the synchronization assembly.

[0109] See Figure 13 and 16 As shown, in this embodiment, the body 10 includes a first base 15 and a second base 11. In the thickness direction, the second base 11, the rotating part 41, the synchronous transmission member 50, and the first base 15 are arranged sequentially. More preferably, the body 10 is provided with a rear cover 19 on the outside of the first base 15.

[0110] See Figure 16As shown, a half-shaft rod portion 12 is provided on the second base 11. The half-shaft rod portion 12 has an arc-shaped working surface on one side of the rotating part 41. This arc-shaped working surface matches the inner arc surface of the rotating part 41 and is used to limit the rotation of the rotating part 41. In a cross-section perpendicular to the half-shaft rod portion 12, the curvature of the arc-shaped working surface is π / 4 to π. More preferably, the curvature of the arc-shaped working surface is π / 3 to 2π / 3. Correspondingly, the curvature of the rotating part 41 as a whole is π / 4 to π, preferably π / 3 to 2π / 3. Therefore, the cross-sections of the half-shaft rod portion 12 and the rotating part 41 are small semicircles, resulting in a thinner and lighter structure.

[0111] Furthermore, the half-shaft rods 12 on the second base 11 are arranged symmetrically on the left and right sides. That is, the left half-shaft rod and the right half-shaft rod are respectively adapted to the left rotating part 41a and the right rotating part 41b.

[0112] Additionally, the arm span 54 of the main body 52 is provided with an upper arc surface; the upper arc surface is adapted to the outer arc surface of the rotating part 41, and the upper arc surface and the arc working surface of the half shaft part 12 enclose an arc-shaped limiting cavity for limiting the rotation of the rotating part 41.

[0113] The first base 15 includes a left rod 15a and a right rod 15b arranged symmetrically on the left and right sides. The left rod 15a and right rod 15b are each provided with a mounting groove 15c for accommodating the two arm extensions 54 of the synchronous transmission member 50. More preferably, the bottom surface of the mounting groove 15c abuts against the back of the arm extension 54, serving a limiting function.

[0114] Alternatively, the first base 15 can also be an integrally formed component, with a structure such as an assembly slot 15c adapted to the synchronous transmission component 50.

[0115] Preferably, the lengths of the second base 11, the left rod 15a, and the right rod 15b are the same as those of the entire hinge structure.

[0116] Furthermore, the long tail portion 55 is positioned within the intermediate gap between the left rod 15a and the right rod 15b; the left rod 15a and the right rod 15b are provided with grooves 16 for accommodating the positioning plate 60, and the grooves are provided with insertion holes for inserting the actuating spring 70. Preferably, guide posts are provided on both sides of the positioning plate 60, and guide holes that guide and cooperate with the guide posts are provided in the grooves of the left rod 15a and the right rod 15b.

[0117] Alternatively, the slider structure 51 in the helical drive pair abuts against the bottom surface of the helical groove 42, thereby also abutting the rotating part 41 in the thickness direction, and cooperating with the arc working surface on the half shaft part 12 of the upper second base 11 to clamp the rotating part 41 in the middle, thereby playing a role in limiting the rotation of the rotating part 41.

[0118] The hinge structure disclosed in this application is ingeniously designed and easy to implement.

[0119] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A hinge structure for a foldable electronic device, characterized in that, include: The main body, screen support, first swing connector and second swing connector; The screen support is used to install and support the flexible screen; The screen support includes a first plate disposed near the folded portion of the flexible screen and a second plate disposed away from the folded portion; One end of the first sway connector and the second sway connector are respectively rotatably mounted on the main body; the other end of the second sway connector is pivotally connected to the second plate; the second plate is provided with a insertion groove; the other end of the first sway connector can be slidably inserted into the insertion groove; the second plate is rotatably mounted on the main body through the first sway connector and the second sway connector. The first plate is rotatably mounted on the second plate at one end near the second plate; the first swaying connector is connected to the first plate through a cam transmission structure, which drives the first plate to sway when the first swaying connector swings, thereby forcing the first plate to tilt when the flexible screen is fully folded, thus creating a deformation avoidance space for the folded part of the flexible screen.

2. The hinge structure according to claim 1, characterized in that, The cam transmission structure includes a slide groove on the first plate and a pin on the first swing connector. The pin is slidably inserted into the slide groove. During the swinging process of the first swing connector and the second plate, the pin slides relative to the slide groove, and at the same time, the slide groove forces the first plate to swing relative to the second plate.

3. The hinge structure according to claim 2, characterized in that, It also includes a grooved plate that is fixedly connected to the bottom surface of the first plate; the grooved plate is provided with the sliding groove.

4. The hinge structure according to claim 1, characterized in that, It also includes a swivel base; the swivel base is rotatably mounted on the main body; the second plate is fixedly connected to the swivel base; the swivel base is provided with the insertion slot.

5. The hinge structure according to claim 4, characterized in that, The first plate is connected to the swing seat via a pivot structure; The pivot structure includes an arc-shaped guide groove or guide block provided on the first plate or the swing seat, and an arc-shaped guide block or guide groove provided on the swing seat or the first plate.

6. The hinge structure according to claim 5, characterized in that, It also includes a base that is fixedly connected to the bottom surface of the first plate, and the base is provided with the guide groove or guide block.

7. The hinge structure according to claim 1, characterized in that, When the flexible screen is horizontally unfolded, the first screen mounting surface on the first plate is flush with the second screen mounting surface on the second plate.

8. The hinge structure according to claim 7, characterized in that, The second swing connector is bent as a whole to prevent the entire second swing connector from protruding from the first screen mounting surface on the first plate during the entire process from the horizontal unfolding of the flexible screen to its complete folding.

9. The hinge structure according to claim 7, characterized in that, The screen support includes a left screen support and a right screen support arranged symmetrically on the left and right sides; the left screen support and the right screen support are respectively rotatably mounted on the body through two sets of the first sway connector and the second sway connector. When the flexible screen is fully folded, the two second screen mounting surfaces on the second plates on the left and right sides are arranged in parallel and spaced apart, and the gap between the two first screen mounting surfaces on the first plates on the left and right sides is arranged in a funnel shape with a smaller gap at the top and a larger gap at the bottom.

10. The hinge structure according to claim 1, characterized in that, The second plate includes a left plate and a right plate arranged symmetrically on the left and right sides; a synchronization component is provided between the left plate and the right plate to realize synchronous rotation of the left plate and the right plate in opposite directions; the left plate and the right plate are rotatably connected to the main body through two sets of first and second rotatable connectors arranged on the left and right sides respectively.

11. The hinge structure according to claim 10, characterized in that, The second swaying connector has an arc-shaped rotating part at one end that is swaying to the main body; the rotating part is integrally formed with the connecting arm; one end of the connecting arm is fixedly connected to the rotating part, and the other end is hinged to the second plate. The synchronization component includes a synchronization transmission element; the synchronization transmission element is disposed on the body and can only reciprocate along the virtual swing center line of the first plate. The rotating part includes a left rotating part disposed on the second swing connector on the left side and a right rotating part disposed on the second swing connector on the right side; a helical transmission pair is disposed between the rotating part and the synchronous transmission member to realize the conversion and transmission between the swing motion of the second plate and the rotating part and the linear motion of the synchronous transmission member; the left helical transmission pair between the left rotating part and the synchronous transmission member has the opposite helical direction to the right helical transmission pair between the right rotating part and the synchronous transmission member, and is used to realize the synchronous opposite or synchronous reverse swing of the left and right plates.

12. A foldable electronic device, characterized in that, It has a hinge structure as described in any one of claims 1-11.

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