Dual-screen support and folding electronic device thereof

Abstract

The utility model provides a kind of double screen support and its folding electronic equipment, double screen support includes: stand, first supporting member and second supporting member;The first supporting member and second supporting member are used to install first display part and second display part respectively;The first supporting member is slidably arranged on the stand by lifting assembly up and down;First gear is rotatably arranged on the lifting assembly;The stand is provided with rack structure meshing with the first gear;The second supporting member is pivotally connected with the first supporting member;Gear transmission pair is arranged between the first gear and the second supporting member, when the first supporting member and lifting assembly slide along the stand up and down, rack structure forces the first gear to rotate, and the first gear drives the second supporting member to swing relative to the first supporting member by gear transmission pair.The utility model structure is simple, can realize the quick switching of double screen multiple working angle, and improves user experience.

Description

Technical Field

[0001] This utility model relates to the field of monitor bracket technology, and in particular to a dual-screen bracket and its foldable electronic device. Background Technology

[0002] Currently, with the development of technology, more and more dual-display or foldable screens are being used. In practice, dual-display and foldable screens exhibit various working states. For example, two displays may be arranged at an angle of 90°-135°, with one screen acting as an input device and the other as a monitor, or both screens may be unfolded onto the same plane to form a unified large screen. However, current support devices cannot meet the demands of the complex structure of dual-display systems or the need for rapid switching between multiple working angles. Utility Model Content

[0003] The purpose of this utility model is to provide a dual-screen bracket and its foldable electronic device to solve at least one of the above-mentioned technical problems in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model provides a dual-screen bracket, comprising: a column, a first support member, and a second support member; The first support and the second support are used to mount the first display unit and the second display unit, respectively. The first support member is slidably mounted on the column via a lifting assembly; The lifting assembly is rotatably provided with a first gear; The column is provided with a rack structure that meshes with the first gear; The second support member is pivotally connected to the first support member; A gear transmission pair is provided between the first gear and the second support member. When the first support member and the lifting assembly slide up and down along the column, the rack structure forces the first gear to rotate. The first gear drives the second support member to swing relative to the first support member through the gear transmission pair.

[0005] Furthermore, the gear transmission pair includes a structure of a second gear and a third gear that mesh and transmit power with each other; The second gear is coaxial with the first gear and is fixed relative to it; The third gear structure is fixedly mounted on the second support member.

[0006] Furthermore, the transmission ratio from the rack structure, the first gear, the second gear to the third gear structure satisfies the condition that the maximum relative swing angle of the second support member is achieved within the lifting stroke range of the first support member.

[0007] Furthermore, the length of the rack structure is greater than or equal to the lifting stroke of the first support member; and / or, the arc angle corresponding to the third gear structure is greater than or equal to the maximum swing angle of the second support member.

[0008] Furthermore, the reference diameter of the first gear is larger than the reference diameter of the second gear.

[0009] Preferably, the reference diameter of the first gear is 1.5 to 5 times the reference diameter of the second gear.

[0010] Furthermore, the reference radius of the third gear structure is greater than the reference radius of the second gear.

[0011] Furthermore, an arc-shaped block is fixedly provided on the second support member. The arc-shaped block includes a tangential surface on one side of the second support member and an outer arc surface, on which the third gear structure is provided.

[0012] Furthermore, in the height direction, the first gear and the gear transmission pair are disposed at the junction of the first support member and the second support member.

[0013] Furthermore, the arc-shaped block is fixedly disposed at the edge of the second support member, and the tangential surface includes an extension that extends outward toward the edge of the second support member in the direction of the first support member; after the first support member slides upward to its limit position, the extension of the tangential surface abuts against the back of the first support member.

[0014] It should be noted that the chord-cutting surface can be a plane, a curved surface, or other forms. Preferably, the chord-cutting surface is a plane.

[0015] Preferably, after the first support slides upward to its limit position, the outer extension of the tangential surface abuts against the back of the first support, and the first display part and the second display part are in the same plane.

[0016] Furthermore, the two sets of gear transmission pairs are symmetrically arranged on both sides of the first gear; The two second gears are fixedly connected to the two sides of the first gear symmetrically from left to right; Two of the aforementioned bow-shaped blocks are fixedly mounted on the second support member.

[0017] Furthermore, the two bow-shaped blocks are fixedly connected by an intermediate connecting part to form a swing block; the intermediate connecting part is provided with a connecting hole and other connecting structure for connecting with the second support member.

[0018] Preferably, the two bow-shaped blocks are integrally formed with the intermediate connecting part, and are connected and fixed to the second support member through the intermediate connecting part.

[0019] Furthermore, a sliding groove is provided inside the column along its height direction, and a strip-shaped opening is provided on the front side of the column along its height. The inner end of the lifting assembly is slidably disposed in the sliding groove, and the outer end of the lifting assembly extends out from the strip-shaped opening and connects to the first support member. That is, the first support member is slidably disposed on the column via the lifting assembly.

[0020] Furthermore, the lifting assembly includes a housing, and the first gear and the second gear are rotatably disposed within the housing via a shaft; a window is provided on the back of the housing, and the first gear extends out from the window and meshes with a rack structure provided at the bottom of the slide groove.

[0021] The rack structure can be a long, independent component or a tooth structure integrally set at the bottom of the column groove.

[0022] Furthermore, the housing has mounting holes near the back; and an arc-shaped mounting groove is provided near the front of the housing. The oscillating block can be rotatably inserted into the arc-shaped mounting slot; The first gear and the second gear are rotatably disposed in the mounting hole; the first gear extends rearward out of the mounting hole and is connected to the rack structure for transmission; the second gear extends forward into the arc-shaped mounting groove and is connected to the third gear structure for transmission.

[0023] Furthermore, an arc-shaped limiting guide structure is provided between the left and right side walls of the arc-shaped mounting groove of the housing and the swing block, and the swing block can be rotatably connected to the housing through the limiting guide structure.

[0024] The limiting and guiding structure can be an arc-shaped guide groove and an arc-shaped guide protrusion respectively provided on the left and right side walls of the arc-shaped mounting groove and on the outer side of the swing block; the limiting and guiding structure can also be other limiting and guiding structures used for swing connection.

[0025] Furthermore, the housing includes a main body and side plates; the main body is provided with the arc-shaped mounting groove and the mounting hole; the side plates cover the arc-shaped mounting groove from the left and right sides to form the side wall of the arc-shaped mounting groove; the side plates are provided with the arc-shaped guide groove or the arc-shaped guide protrusion.

[0026] Furthermore, the lifting assembly also includes a constant force spring, which is disposed in the slide groove and connected at both ends to the lifting assembly and the column, respectively, and tends to force the lifting assembly to move upward, thereby providing a supporting force for the first support member and the second support member.

[0027] Furthermore, the inner end of the lifting assembly is slidably disposed in the slide groove via a slide rail structure or a rolling element (such as a roller or bearing).

[0028] Preferably, a damping structure such as a friction plate is provided between the lifting assembly and the side wall of the slide.

[0029] The first and second supports can be frame or plate structures. The first and second display sections are independent displays; alternatively, they are upper and lower parts of the same folding screen. The first and second supports are rotatably connected relative to each other via a pivot or hinge.

[0030] The second aspect of this application discloses a foldable electronic device employing the aforementioned dual-screen bracket.

[0031] By adopting the above technical solution, this utility model has the following beneficial effects: The dual-screen stand provided by this utility model has a simple structure and can quickly switch between multiple working angles of the two screens, thus improving the user experience. Attached Figure Description

[0032] 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.

[0033] Figure 1 A side view of the dual-screen bracket provided in an embodiment of this utility model; Figure 2 for Figure 1 A 3D view of the dual-screen stand shown; Figure 3 for Figure 2 A schematic diagram of the internal transmission structure of the column after the L-shaped plate is removed. Figure 4 An exploded view of the rack and pinion transmission pair of the dual-screen bracket after the column has been removed; Figure 5 for Figure 4 A magnified view of a section at point A in the middle; Figure 6 A perspective view of the column and lifting assembly provided in an embodiment of this utility model; Figure 7 This is an assembly diagram of the first support member, the second support member, and the lifting assembly in the embodiment; Figure 8 for Figure 7 Exploded view; Figure 9 The front view shows the connection structure between the swing block and the first and second supports. Figure 10 This is an exploded view of the lifting component in the embodiment; Figure 11 This is a perspective view of the oscillating block in the embodiment; Figure 12 This is the main view of the swing block in the embodiment.

[0034] Figure label: 1-Slide rail; 10-Base; 20-Column; 21-L-shaped plate; 22-Rectangular frame component; 23-Slide groove; 31-First support component; 32-Second support component; 33-Hinge component; 40-Lifting assembly; 41-Housing shell; 41a-Main body; 41b-Side plate; 43-Mounting hole; 44-Arc-shaped mounting groove; 50-Rack and pinion structure; 51-First gear; 52-Second gear; 53-Third gear structure; 60-Constant force spring; 70-Arch-shaped block; 70a-Swing block; 71-Chord section; 72-Circular arc surface; 73-Intermediate connecting part. Detailed Implementation

[0035] 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.

[0036] 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.

[0037] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0038] The present invention will be further explained below with reference to specific embodiments.

[0039] like Figure 1-4 As shown, this embodiment provides a dual-screen bracket, including: a column 20, a first support 31, and a second support 32; wherein, the column 20 is erected on the base 10.

[0040] The first support 31 and the second support 32 are used to install the first display unit (not shown) and the second display unit (not shown) respectively; the first support 31 is slidably mounted on the column 20 via the lifting assembly 40; a first gear 51 is rotatably mounted on the lifting assembly 40; a rack structure 50 that meshes with the first gear 51 is mounted on the column 20; the second support 32 is pivotally connected to the first support 31; a gear transmission pair is provided between the first gear 51 and the second support 32; when the first support 31 and the lifting assembly 40 slide up and down along the column 20, the rack structure 50 forces the first gear 51 to rotate, and the first gear 51 drives the second support 32 to swing relative to the first support 31 through the gear transmission pair.

[0041] In this embodiment, as Figure 2 As shown, the column 20 is composed of an L-shaped plate 21 and a rectangular frame 22; preferably, the bottom plate of the L-shaped plate 21 is rotatably connected to the base 10. This allows the display screen to be horizontally rotated.

[0042] Furthermore, such as Figure 4-5 as well as Figure 8 As shown, the gear transmission pair includes a second gear 52 and a third gear structure 53 that mesh and transmit power with each other; the second gear 52 is coaxial with the first gear 51 and is fixedly disposed relative to it; the third gear structure 53 is directly or indirectly fixedly disposed on the second support member 32.

[0043] Preferably, the length of the rack structure 50 is greater than or equal to the lifting stroke of the first support member 31; and / or, the arc angle corresponding to the third gear structure 53 is greater than or equal to the maximum swing angle of the second support member 32. Also, the reference diameter of the first gear 51 is greater than the reference diameter of the second gear 52. Preferably, the reference diameter of the first gear 51 is 1.5-5 times the reference diameter of the second gear 52. Similarly, the reference radius of the third gear structure 53 is greater than the reference radius of the second gear 52. The transmission ratio of the rack and pinion transmission pair and the gear transmission pair satisfies the following condition: the maximum relative swing angle of the second support member 32 is achieved within the lifting stroke range of the first support member 31; for example, when the first support member 31 rises to the highest limit position, the second support member 32 and the first support member 31 are in the same vertical plane; when the first support member 31 descends to the lowest limit position, the second support member 32 swings 90° (assuming the maximum swing angle is 90°) and is then horizontally positioned, perpendicular to the first support member 31. Since the first support member 31 typically has a limited stroke, the aforementioned transmission ratio needs to be an acceleration transmission ratio greater than 1, so as to achieve the maximum swing amplitude of the second support member 32 within the limited lifting stroke.

[0044] Furthermore, such as Figure 8-12 As shown, an arc-shaped block 70 is fixedly provided on the second support member 32; the arc-shaped block 70 includes a tangential surface 71 on one side of the second support member 32 and an outer arc surface 72, on which the third gear structure 53 is provided.

[0045] Furthermore, in the height direction, the first gear 51 and the gear transmission pair are disposed at the junction of the first support member 31 and the second support member 32.

[0046] Furthermore, such as Figure 7-9 As shown, the bow-shaped block 70 is fixedly disposed at the edge of the second support member 32, and the tangential surface 71 includes an extension that extends outward toward the edge of the second support member 32 in the direction of the first support member 31; after the first support member 31 slides upward to the limit position, the extension of the tangential surface 71 abuts against the back of the first support member 31.

[0047] It should be noted that the chordal tangent 71 can be a plane, a curved surface, or other forms. Preferably, the chordal tangent 71 is a plane.

[0048] Preferably, after the first support member 31 slides upward to its limit position, the outer extension of the tangential surface 71 abuts against the back of the first support member 31, and the first display part and the second display part are in the same plane.

[0049] Furthermore, such as Figure 4 , 58 and Figure 10 As shown, the two sets of gear transmission pairs are symmetrically arranged on both sides of the first gear 51; specifically, the two second gears 52 are symmetrically fixedly connected to both sides of the first gear 51; and two bow-shaped blocks 70 are fixedly arranged on the second support member 32.

[0050] like Figure 11-12 As shown, preferably, the two bow-shaped blocks 70 are fixedly connected by an intermediate connecting part 73 to form a swing block 70a; the intermediate connecting part 73 is provided with a connecting hole and other connecting structure for connecting with the second support member 32. During installation, it can be fixedly connected to the second support member 32 using fasteners such as screws. Preferably, the swing block 70a is integrally formed by the two bow-shaped blocks 70 and the intermediate connecting part 73.

[0051] Furthermore, such as Figure 6 As shown, a sliding groove 23 is provided inside the column 20 along the height direction. The sliding groove 23 has a strip-shaped opening along the height on the front side of the column 20. The inner end of the lifting assembly 40 is slidably disposed in the sliding groove 23, and the outer end of the lifting assembly 40 extends out from the strip-shaped opening and connects to the first support member 31. That is, the first support member 31 is slidably disposed on the column 20 through the lifting assembly 40.

[0052] Furthermore, such as Figure 7-8 As shown, the lifting assembly 40 includes a housing 41, and the first gear 51 and the second gear 52 are rotatably mounted inside the housing 41 via a shaft 54. A window is provided on the back of the housing 41, and the first gear 51 extends out of the window and meshes with a rack structure 50 provided at the bottom of the slide groove 23. The rack structure 50 can be a long, independent component or a toothed structure integrally mounted at the bottom of the slide groove 23 of the column 20.

[0053] Furthermore, such as Figure 10 As shown, the housing 41 has a mounting hole 43 near its back; the housing 41 has an arc-shaped mounting groove 44 near its front; the swivel block 70a is rotatably inserted into the arc-shaped mounting groove 44; the first gear 51 and the second gear 52 are rotatably disposed in the mounting hole 43; the first gear 51 extends rearward out of the mounting hole 43 and is connected to the rack structure 50; the second gear 52 extends forward into the arc-shaped mounting groove 44 and is connected to the third gear structure 53.

[0054] Furthermore, an arc-shaped limiting guide structure is provided between the left and right side walls of the arc-shaped mounting groove 44 of the housing 41 and the swing block 70a, and the swing block 70a can be rotatably connected to the housing 41 through the limiting guide structure.

[0055] The limiting guide structure can be an arc-shaped guide groove and an arc-shaped guide protrusion respectively provided on the left and right side walls of the arc-shaped mounting groove 44 and on the outer side of the swing block 70a; the limiting guide structure can also be other limiting guide structures used for swing connection.

[0056] The housing 41 includes a main body 41a and a side plate 41b; the main body 41a is provided with the arc-shaped mounting groove 44 and mounting holes 43; the side plate 41b covers the arc-shaped mounting groove 44 from the left and right sides to form the side wall of the arc-shaped mounting groove 44; the side plate 41b is provided with the arc-shaped guide groove or the arc-shaped guide protrusion 41c.

[0057] See Figure 4 As shown, the lifting assembly 40 also includes a constant force spring 60, which is disposed within the slide groove 23. The two ends of the constant force spring 60 are connected to the lifting assembly 40 and the column 20 respectively, and tend to force the lifting assembly 40 to move upward, thereby providing support for the first support member 31 and the second support member 32. The inner end of the lifting assembly 40 is slidably disposed within the slide groove 23 via a slide rail 1 or a rolling element (e.g., a roller or bearing). Preferably, a damping structure such as a friction plate is provided between the lifting assembly 40 and the sidewall of the slide groove 23.

[0058] The first support member 31 and the second support member 32 can be a frame structure or a plate structure. The first display section and the second display section are independent display screens; or, the first display section and the second display section are the upper and lower parts of the same folding screen. The first support member 31 and the second support member 32 are connected by a pivot shaft. In this embodiment, the first support member 31 and the second support member 32 are rotatably connected relative to each other by hinge members 33 on both sides.

[0059] The second aspect of this application discloses a foldable electronic device employing the aforementioned dual-screen bracket.

[0060] The dual-screen bracket provided by this utility model has a simple structure. When the first support member 31 is raised or lowered, the second support member 32 can follow the swing very smoothly, thereby realizing the rapid switching of the dual screens to multiple working angles and greatly improving the user experience.

[0061] 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 dual-screen stand, characterized in that, include: Column, first support and second support; The first support and the second support are used to mount the first display unit and the second display unit, respectively. The first support member is slidably mounted on the column via a lifting assembly; The lifting assembly is rotatably provided with a first gear; The column is provided with a rack structure that meshes with the first gear; The second support member is pivotally connected to the first support member; A gear transmission pair is provided between the first gear and the second support member. When the first support member and the lifting assembly slide up and down along the column, the rack structure forces the first gear to rotate. The first gear drives the second support member to swing relative to the first support member through the gear transmission pair.

2. The dual-screen bracket according to claim 1, characterized in that, The gear transmission pair includes a structure of a second gear and a third gear that mesh and transmit power with each other; The second gear is coaxial with the first gear and is fixed relative to it; The third gear structure is fixedly mounted on the second support member.

3. The dual-screen bracket according to claim 2, characterized in that, The transmission ratio from the rack structure, the first gear, the second gear to the third gear structure satisfies the condition that the maximum relative swing angle of the second support member is achieved within the lifting stroke range of the first support member.

4. The dual-screen bracket according to claim 2, characterized in that, The length of the rack structure is greater than or equal to the lifting stroke of the first support member; and / or, the arc angle corresponding to the third gear structure is greater than or equal to the maximum swing angle of the second support member.

5. The dual-screen bracket according to claim 2, characterized in that, The reference diameter of the first gear is larger than the reference diameter of the second gear.

6. The dual-screen bracket according to claim 2, characterized in that, The reference diameter of the first gear is 1.5 to 5 times the reference diameter of the second gear.

7. The dual-screen bracket according to claim 2, characterized in that, The reference radius of the third gear structure is greater than the reference radius of the second gear.

8. The dual-screen bracket according to claim 2, characterized in that, An arc-shaped block is fixedly provided on the second support member. The arc-shaped block includes a tangential surface on one side of the second support member and an outer arc surface. The third gear structure is provided on the arc surface.

9. The dual-screen bracket according to claim 8, characterized in that, In the vertical direction, the first gear and the gear transmission pair are disposed at the junction of the first support and the second support.

10. The dual-screen bracket according to claim 9, characterized in that, The arc-shaped block is fixedly disposed at the edge of the second support member, and the tangential surface includes an extension that extends outward toward the edge of the second support member in the direction of the first support member; After the first support slides upward to its limit position, the outer extension of the tangential surface abuts against the back of the first support.

11. The dual-screen bracket according to claim 10, characterized in that, After the first support slides upward to its limit position, the outer extension of the tangential surface abuts against the back of the first support, and the first display part and the second display part are in the same plane.

12. The dual-screen bracket according to claim 8, characterized in that, The two sets of gear transmission pairs are symmetrically arranged on both sides of the first gear; The two second gears are fixedly connected to the two sides of the first gear symmetrically from left to right; Two of the aforementioned bow-shaped blocks are fixedly mounted on the second support member.

13. The dual-screen bracket according to claim 12, characterized in that, The two bow-shaped blocks are fixedly connected by an intermediate connecting part to form a swing block; the intermediate connecting part is provided with a connecting structure that connects to the second support member.

14. The dual-screen bracket according to claim 13, characterized in that, The column is provided with a sliding groove along the height direction. The sliding groove has a strip-shaped opening along the height on the front side of the column. The inner end of the lifting component is slidably disposed in the sliding groove. The outer end of the lifting component extends out from the strip-shaped opening and connects with the first support member.

15. The dual-screen bracket according to claim 14, characterized in that, The lifting assembly includes a housing, and the first gear and the second gear are rotatably mounted inside the housing via a shaft; a window is provided on the back of the housing, and the first gear extends out of the window and meshes with a rack structure provided at the bottom of the slide groove.

16. The dual-screen bracket according to claim 15, characterized in that, The housing has mounting holes near the back; the housing has an arc-shaped mounting groove near the front. The oscillating block can be rotatably inserted into the arc-shaped mounting slot; The first gear and the second gear are rotatably disposed in the mounting hole; the first gear extends rearward out of the mounting hole and is connected to the rack structure for transmission; the second gear extends forward into the arc-shaped mounting groove and is connected to the third gear structure for transmission.

17. The dual-screen bracket according to claim 16, characterized in that, An arc-shaped limiting guide structure is provided between the left and right side walls of the arc-shaped mounting groove of the housing and the swing block, and the swing block can be rotatably connected to the housing through the limiting guide structure.

18. The dual-screen bracket according to claim 17, characterized in that, The limiting and guiding structure consists of arc-shaped guide grooves and arc-shaped guide protrusions respectively provided on the left and right side walls of the arc-shaped mounting groove and on the outer side of the swing block.

19. The dual-screen bracket according to claim 18, characterized in that, The housing includes a main body and side plates; the main body is provided with the arc-shaped mounting groove and the mounting hole; the side plates cover the arc-shaped mounting groove from the left and right sides to form the side wall of the arc-shaped mounting groove; the side plates are provided with the arc-shaped guide groove or the arc-shaped guide protrusion.

20. The dual-screen bracket according to claim 14, characterized in that, The lifting assembly also includes a constant force spring, which is disposed in the slide groove. Its two ends are respectively connected to the lifting assembly and the column, and tend to force the lifting assembly to move upward, thereby providing a supporting force for the first support member and the second support member.

21. The dual-screen bracket according to claim 14, characterized in that, The inner end of the lifting component is slidably mounted in the slide groove via a slide rail structure or rolling element.

22. The dual-screen bracket according to claim 14, characterized in that, A damping structure is provided between the lifting assembly and the side wall of the slide.

23. The dual-screen bracket according to claim 1, characterized in that, The first display unit and the second display unit are independent display screens; or, the first display unit and the second display unit are the upper and lower parts of the same folding screen.

24. A foldable electronic device, characterized in that, The dual-screen bracket described in any one of claims 1-23 is adopted.

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