Hinge of infolding flexible screen mobile terminal

Abstract

The utility model provides a hinge of an infolding flexible screen mobile terminal. The hinge comprises a middle base, a left side rotating connecting frame, a right side rotating connecting frame, a synchronous reverse rotating connecting mechanism and a torque module. The rotating connecting frames on the two sides are rotationally connected with the middle base through virtual rotating center rotating connecting structures correspondingly and are provided with structures connected with the flexible screen supporting plate correspondingly. And the synchronous reverse rotation connecting mechanism adopts an end cam synchronous reverse transmission mechanism. The flexible screen support device can be applied to the infolding flexible screen mobile terminal, is simple in structure and can realize thin comprehensive support.

Description

Technical Field

[0001] The utility model relates to a hinge in an inwardly folding flexible screen mobile terminal, and the flexible screen mobile terminal may be a mobile phone, a laptop computer, etc. Background Art

[0002] There are two types of screen forms in the closed state of the inward-folding flexible screen mobile terminal: "water drop type" and "U-type type". In the former, due to the characteristics of the screen form that is small at the top and large at the bottom, the hinge needs to have a floating door panel to cooperate with the movement trajectory to form a water drop-shaped avoidance when closed to accommodate the screen. The rotation angle of the door panel is greater than the rotation angle of the hinge body, resulting in interference between the door panel and other mechanisms of the hinge body. It is necessary to cut off the interference part in the closed state on the door panel, and accordingly, the screen cannot be fully fitted and supported in the unfolded state;

[0003] The latter "U-type" folding flexible mobile terminal generally adopts a gear synchronization structure. Since the two sides of the fold need to rotate in opposite directions to achieve opening or closing, the gear set is set in even number, and there must be gear meshing in the middle position of the folded device. The cylindrical gear meshing needs to occupy space in the thickness direction of the device. The thin and light hinge design can only avoid the interference part of the closed state with the gear set by making a notch on the screen support plate. Accordingly, the screen cannot be fully fitted and supported in the unfolded state.

[0004] The existing products have unavoidable gaps or pits between the screen and the hinge for the various components and the screen to avoid each other. The unfolded surface cannot be made flat, resulting in an uneven feeling when touching the OLED. After multiple openings and closings, the screen will have creases due to the lack of complete support above the hinge. If a sharp object falls on the above part of the screen, it is easy to cause damage, and the impact resistance is poor. Utility Model Content

[0005] The purpose of the utility model is to provide a new solution to the problems existing in the background technology, which can be applied to the inward folding flexible screen mobile terminal, has a simple structure and can achieve thin and comprehensive support. To this end, the utility model adopts the following technical solutions:

[0006] The hinge of the inward folding flexible screen mobile terminal includes an intermediate base, a left rotating connecting frame and a right rotating connecting frame, a synchronous reverse rotating connecting mechanism, and a torque module, wherein the torque module outputs a rotational resistance torque; it is characterized in that the left rotating connecting frame and the right rotating connecting frame are respectively rotatably connected to the intermediate base through a virtual rotating center rotating connecting structure composed of an arc slide rail and an arc slider, and the left rotating connecting frame and the right rotating connecting frame are respectively provided with structures for connecting a flexible screen support plate; the synchronous reverse rotating connecting mechanism adopts an end face cam synchronous reverse transmission mechanism, and the end face cam synchronous reverse transmission mechanism includes an intermediate sliding flat block, a first left connecting arm and The first right connecting arm, the first left connecting arm and the first right connecting arm are respectively provided with a left end face rotating cam and a right end face rotating cam, and the two sides of the middle sliding flat block are respectively provided with a left end face sliding cam and a right end face sliding cam that cooperate with the left end face rotating cam and the right end face rotating cam, the first left connecting arm and the first right connecting arm are respectively movably connected to the left rotating connecting frame and the right rotating connecting frame, and can rotate synchronously with the left rotating connecting frame and the right rotating connecting frame respectively; when the inward folding flexible screen mobile terminal is flattened, the height of the virtual rotation center is higher than the rotation axis of the left end face rotating cam and the right end face rotating cam.

[0007] On the basis of adopting the above technical solutions, the present invention can also adopt the following further technical solutions at the same time, or use these further technical solutions in combination:

[0008] A left support plate and a right support plate for the flexible screen are set, and the middle base is fixedly connected to the middle shell of the inward folding flexible screen mobile terminal, and the left rotating connecting frame and the right rotating connecting frame are fixedly connected to the left support plate and the right support plate respectively, and the left support plate and the right support plate cover the left rotating connecting frame and the right rotating connecting frame, the synchronous reverse rotating connecting mechanism, and the torque module at the bottom, and the left support plate and the right support plate are spliced ​​just above the center line of the middle base when the inward folding flexible screen mobile terminal is flattened, and the left and right support plates are respectively located above the bottom surfaces of the left and right support plates, and when the flexible screen mobile terminal is folded, the spliced ​​ends of the left and right support plates are transferred into the middle shell.

[0009] The synchronous reverse rotation connection mechanism is provided with a first left fixed shaft and a first right fixed shaft, the left end face rotating cam and the left end face sliding cam are loosely mounted on the first left fixed shaft, and the right end face rotating cam and the right end face sliding cam are loosely mounted on the first right fixed shaft; the first left fixed shaft and the second right fixed shaft are threadedly connected or interference fit connected to the intermediate base.

[0010] The left rotating connecting frame and the right rotating connecting frame are respectively provided with long holes, the first left connecting arm and the first right connecting arm are respectively connected to the connecting shaft, and the connecting shaft and the long hole are movably connected and can slide forward and backward along the long hole.

[0011] The torque module and the synchronous reverse rotation connection mechanism are respectively located on both sides of the virtual rotation center rotation connection structure.

[0012] The torque module is provided with a second left connecting arm and a second right connecting arm, and the second left connecting arm and the second right connecting arm are movably connected to the left rotating connecting frame and the right rotating connecting frame respectively, and can rotate synchronously with the left rotating connecting frame and the right rotating connecting frame respectively.

[0013] The left rotating connecting frame and the right rotating connecting frame are respectively provided with long holes, the second left connecting arm and the second right connecting arm are respectively connected to the connecting shaft, and the connecting shaft and the long hole are movably connected and can slide forward and backward along the long hole.

[0014] The torque module is provided with a connecting seat, and the connecting seat and the middle base are connected by screws to form a mounting frame of the torque module. The mounting frame is provided with a second left fixed shaft and a second right fixed shaft, and the second left connecting arm and the second right connecting arm are rotatably connected to the second left fixed shaft and the second right fixed shaft respectively through a spring tube.

[0015] Two first left connecting arms and two first right connecting arms are respectively arranged in the axial direction, the cam surfaces between the end face cams on the two first left connecting arms are opposite, and the cam surfaces between the end face cams on the two first right connecting arms are opposite, and the middle sliding flat block is provided with corresponding left end face sliding cam and right end face sliding cam.

[0016] The cooperation between the end face rotating cam and the end face sliding cam is a spiral end face cam cooperation.

[0017] The utility model realizes a design scheme that the hinge is completely hidden under the screen support plate through the U-shape form and the end cam slider synchronization module. It has the following technical effects:

[0018] 1. The screen support structure required by the U-shape is simpler, the hinge requires less space when flattened, and it is more friendly to preventing damage to the flexible screen when folded.

[0019] 2. Use the end cam slider synchronization module to replace the traditional gear synchronization transmission mechanism. The main structure of the end cam slider module has no protruding structure in the middle position, so it can be laid flat without occupying the middle space. The screen support plate has enough rotation space to ensure that the two screen support plates can be seamlessly spliced ​​in the unfolded state.

[0020] 3. The fully gap-free support plate provides all-round and flat support for the flexible screen, ensuring that the screen has no creases, no creases when touched, and no bumps, which improves the user experience of the writing pen and enhances the ability to resist the impact of sharp objects falling / impacting the screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a top view of an embodiment of the inward-folding flexible screen mobile terminal of the utility model when it is in a flattened state.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure shown after the flexible screen is hidden.

[0023] Figure 3 The embodiment of the utility model of the inward folding flexible screen mobile terminal corresponds to the U-shaped folded state Figure 2 Section view along line AA.

[0024] Figure 3-1 for Figure 3 Enlarged view of area B.

[0025] Figure 4 The embodiment of the utility model of the inward folding flexible screen mobile terminal corresponds to the following when it is in a flattened state: Figure 2 Section view along line AA.

[0026] Figure 4-1 for Figure 4 Enlarged view of area C in the middle.

[0027] Figure 4-2 The embodiment of the utility model inward folding flexible screen mobile terminal corresponds to the following when in a flattened state: Figure 2 Cross-sectional view along line DD.

[0028] Figure 5 It is an exploded view of the hinge structure of an embodiment of the utility model.

[0029] Figure 6 This is a schematic diagram of hinge assembly according to an embodiment of the present invention. DETAILED DESCRIPTION

[0030] Referring to the accompanying drawings, the hinge of the flexible screen mobile terminal provided by the utility model comprises a middle base 100, a left rotating connecting frame 11 and a right rotating connecting frame 12, a synchronous reverse rotating connecting mechanism, and a torque module, wherein the torque module outputs a rotation resistance torque.

[0031] The left rotating connecting frame 11 and the right rotating connecting frame 12 are both provided with arc sliders 111 and 121, and the middle base 100 is provided with arc slide rails 101 and 102. The left rotating connecting frame 11 and the right rotating connecting frame 12 are rotatably connected to the middle base 100 through the virtual rotation center rotation connection structure of the arc slide rail and the arc slider respectively, and the rotation center S of the arc slide rails 101 and 102 are both higher than the bottom surface of the flexible screen support plate; the left rotating connecting frame 11 and the right rotating connecting frame 12 are respectively provided with structures 112 and 122 for connecting to the flexible screen support plate, which can be screw connection positions and support positions.

[0032] The synchronous reverse rotation connection mechanism adopts an end face cam synchronous reverse transmission mechanism, and the end face cam synchronous reverse transmission mechanism includes an intermediate sliding flat block 20, a first left side connecting arm 21 and a first right side connecting arm 22. The first left side connecting arm 21 and the first right side connecting arm 22 are respectively provided with a left side end face rotating cam and a right side end face rotating cam, and the two sides of the intermediate sliding flat block 20 are respectively provided with a left side end face sliding cam and a right side end face sliding cam that cooperate with the left side end face rotating cam and the right side end face rotating cam. The first left side connecting arm 21 and the first right side connecting arm 22 are respectively movably connected to the left side rotating connecting frame 11 and the right side rotating connecting frame 12, and can rotate synchronously with the left side rotating connecting frame 11 and the right side rotating connecting frame 12 respectively; when the inward folding flexible screen mobile terminal is flattened, the height of the virtual rotation center S is higher than the rotation axis of the left side end face rotating cam and the right side end face rotating cam.

[0033] The inward folding flexible screen mobile terminal is provided with a left support plate 31 and a right support plate 32 of the flexible screen, the middle base 100 is fixedly connected to the middle shell 200 of the inward folding flexible screen mobile terminal, the left rotating connecting frame 11 and the right rotating connecting frame 12 are respectively fixedly connected to the left support plate 31 and the right support plate 32, the structure of the utility model makes the thickness of the inward folding flexible screen mobile terminal thinner and the width of the middle shell 200 can also be freely defined as very narrow, the left support plate 31 and the right support plate 32 can fully cover the area of ​​the flexible screen, and the left rotating connecting frame 11 and the right rotating connecting frame 12, the synchronous reverse rotation connection mechanism, and the torque module are covered below, and the left and right virtual rotation centers S are respectively located above the bottom surfaces of the left support plate 31 and the right support plate 32, and the left support plate 31 and the right support plate 32 are spliced ​​just above the center line of the middle base 100 when the inward folding flexible screen mobile terminal is flattened, and when the inward folding flexible screen mobile terminal is folded, the spliced ​​ends of the left support plate and the right support plate are transferred into the middle shell 200. Reference numeral 30 in the figure indicates a joint seam. The support plate without any gaps provides all-round and smooth support for the flexible screen, ensuring that the screen has no creases.

[0034] The synchronous reverse rotation connection mechanism is provided with a first left fixed shaft 23 and a first right fixed shaft 24, the left end face rotating cam and the left end face sliding cam are slung on the first left fixed shaft 23, and the right end face rotating cam and the right end face sliding cam are slung on the first right fixed shaft 24; the first left fixed shaft 23 and the second right fixed shaft 24 are threadedly connected or welded and fixedly connected with the intermediate base 100. The torque module and the synchronous reverse rotation connection mechanism are respectively located on both sides of the virtual rotation center rotation connection structure. The torque module is provided with a second left connecting arm 41 and a second right connecting arm 42, and the second left connecting arm 41 and the second right connecting arm 42 are respectively movably connected with the left rotating connecting frame 11 and the right rotating connecting frame 12, and can respectively rotate synchronously with the left rotating connecting frame 11 and the right rotating connecting frame 12. The torque module is provided with a connecting seat 40, and the connecting seat 40 and the intermediate base 100 are connected by screws to form a mounting frame of the torque module. The mounting frame is provided with a second left fixed shaft 43 and a second right fixed shaft 44, and the second left connecting arm 41 and the second right connecting arm 42 are rotatably connected to the second left fixed shaft 43 and the second right fixed shaft 44 through spring tubes 411 and 421, respectively. The spring tube is an elastic tube with a seam in the axial direction, which clamps the fixed shaft. Through the above preferred embodiments, the structure of the utility model is not only thin and well supported, but also reasonable to disassemble and easy to assemble.

[0035] The left rotating connecting frame 11 and the right rotating connecting frame 12 are respectively provided with long holes 113 and 123, the first left connecting arm 21 and the first right connecting arm 22 are respectively connected to the connecting shaft 5, and the connecting shaft 5 is movably connected to the long holes 113 and 123 and can slide forward and backward along the long holes. The connecting shaft 5 can have a certain length, the left rotating connecting frame 11 and the right rotating connecting frame 12 are respectively provided with a plurality of long holes 113 and 123, and the second left connecting arm 41 and the second right connecting arm 42 are also respectively connected to the connecting shaft 5.

[0036] In the end face cam synchronous reverse transmission mechanism, two first left connecting arms 21 and two first right connecting arms 22 are respectively arranged in the axial direction, the cam surfaces of the end face cams 21A and 21B on the two first left connecting arms 21 are opposite, and the cam surfaces of the end face cams 22A and 22B on the two first right connecting arms are opposite, and the intermediate sliding flat block 20 is provided with corresponding left end face sliding cams 201A and 201B and right end face sliding cams 202A and 202B.

[0037] In the end face cam synchronous reverse transmission mechanism, the cooperation between the end face cam rotation and the end face sliding cam is a spiral end face cam cooperation.

[0038] In practice, a plurality of hinges 300 of the present invention are coaxially arranged in the middle shell, and are respectively fixedly connected to the left support plate 31 and the right support plate 32 , and are covered by the left support plate 31 and the right support plate 32 .

[0039] The above description is only a specific embodiment of the present invention, but the structural features of the present invention are not limited thereto. Any changes or modifications made by any technician in the field of the present invention are included in the protection scope of the present invention.

[0040] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the utility model and the above-mentioned drawings are intended to cover non-exclusive inclusions. The terms "installed", "set", "provided with", "connected", "connected", and "socketed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in the utility model can be understood according to the specific circumstances.

[0041] In the description of the present invention, it should be understood that the terms "one end", "the other end", "outside", "inside", "horizontal", "end", "length", "outer end", "left", "right" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present invention. The terms "first" and "second" are also used only for the simplicity of description, and do not indicate or imply relative importance.

Claims

1. A hinge for an inward-folding flexible screen mobile terminal, comprising a middle base, a left-side rotating connecting frame and a right-side rotating connecting frame, a synchronous reverse rotating connecting mechanism, and a torque module, wherein the torque module outputs a rotation resistance torque; characterized in that The left rotating connecting frame and the right rotating connecting frame are respectively rotatably connected to the middle base through a virtual rotating center rotating connecting structure composed of an arc slide rail and an arc slider, and the left rotating connecting frame and the right rotating connecting frame are respectively provided with structures for connecting the flexible screen support plate; the synchronous reverse rotating connecting mechanism adopts an end face cam synchronous reverse transmission mechanism, and the end face cam synchronous reverse transmission mechanism includes an intermediate sliding flat block, a first left connecting arm and a first right connecting arm, the first left connecting arm and the first right connecting arm are respectively provided with a left end face rotating cam and a right end face rotating cam, and the two sides of the intermediate sliding flat block are respectively provided with a left end face sliding cam and a right end face sliding cam that cooperate with the left end face rotating cam and the right end face rotating cam, the first left connecting arm and the first right connecting arm are respectively movably connected to the left rotating connecting frame and the right rotating connecting frame, and can respectively rotate synchronously with the left rotating connecting frame and the right rotating connecting frame; when the inward folding flexible screen mobile terminal is flattened, the height of the virtual rotation center is higher than the rotation axis of the left end face rotating cam and the right end face rotating cam.

2. The hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that A left support plate and a right support plate for the flexible screen are set, and the middle base is fixedly connected to the middle shell of the inward folding flexible screen mobile terminal, and the left rotating connecting frame and the right rotating connecting frame are fixedly connected to the left support plate and the right support plate respectively, and the left support plate and the right support plate cover the left rotating connecting frame and the right rotating connecting frame, the synchronous reverse rotating connecting mechanism, and the torque module at the bottom, and the left support plate and the right support plate are spliced ​​just above the center line of the middle base when the inward folding flexible screen mobile terminal is flattened, and the left and right support plates are respectively located above the bottom surfaces of the left and right support plates, and when the flexible screen mobile terminal is folded, the spliced ​​ends of the left and right support plates are transferred into the middle shell.

3. The hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The synchronous reverse rotation connection mechanism is provided with a first left fixed shaft and a first right fixed shaft, the left end face rotating cam and the left end face sliding cam are loosely mounted on the first left fixed shaft, and the right end face rotating cam and the right end face sliding cam are loosely mounted on the first right fixed shaft; the first left fixed shaft and the second right fixed shaft are threadedly connected or interference fit connected to the intermediate base.

4. The hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The left rotating connecting frame and the right rotating connecting frame are respectively provided with long holes, the first left connecting arm and the first right connecting arm are respectively connected to the connecting shaft, and the connecting shaft and the long hole are movably connected and can slide forward and backward along the long hole.

5. The hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The torque module and the synchronous reverse rotation connection mechanism are respectively located on both sides of the virtual rotation center rotation connection structure.

6. The hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that The torque module is provided with a second left connecting arm and a second right connecting arm, and the second left connecting arm and the second right connecting arm are movably connected to the left rotating connecting frame and the right rotating connecting frame respectively, and can rotate synchronously with the left rotating connecting frame and the right rotating connecting frame respectively.

7. The hinge of the inward folding flexible screen mobile terminal according to claim 6, characterized in that The left rotating connecting frame and the right rotating connecting frame are respectively provided with long holes, the second left connecting arm and the second right connecting arm are respectively connected to the connecting shaft, and the connecting shaft and the long hole are movably connected and can slide forward and backward along the long hole.

8. The hinge of the inward folding flexible screen mobile terminal according to claim 6, characterized in that The torque module is provided with a connecting seat, and the connecting seat and the intermediate base are connected by screws to form a mounting frame of the torque module; a second left fixed shaft and a second right fixed shaft are provided on the mounting frame, and the second left connecting arm and the second right connecting arm are rotatably connected to the second left fixed shaft and the second right fixed shaft through a spring tube respectively.

9. The hinge of the inward folding flexible screen mobile terminal according to claim 1, characterized in that Two first left connecting arms and two first right connecting arms are respectively provided in the axial direction, the cam surfaces of the end face cams on the two first left connecting arms are opposite, and the cam surfaces of the end face cams on the two first right connecting arms are opposite, and the middle sliding flat block is provided with corresponding left end face sliding cams and right end face sliding cams; The cooperation between the end face rotating cam and the end face sliding cam is a spiral end face cam cooperation.

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