Screen support device

Abstract

This utility model discloses a screen support device, comprising a support base, a co-moving mechanism mounted on the support base, two linkage mechanisms located on opposite sides of the co-moving mechanism, and two slide rail mechanisms located on the outer sides of the two linkage mechanisms. Each linkage mechanism includes a connecting rod pivotally connected to the co-moving mechanism and a limiting rod pivotally connected to the support base. Each slide rail mechanism includes a track member pivotally connected to the support base and the connecting rod, and a sliding member slidably disposed on the track member and pivotally connected to the limiting rod. The screen support device can drive the two slide rail mechanisms to rotate synchronously in opposite directions by the same angle via the two linkage mechanisms and the co-moving mechanism by moving at least one of the slide rail mechanisms along the track member. Thus, the screen support device can be positioned in different locations by the two slide rail mechanisms, making it suitable for installation on different types of screens.

Description

Technical Field

[0001] This utility model relates to a support device, and more particularly to a screen support device. Background Technology

[0002] Most existing screen support devices are designed for flat screens, but with the emergence and widespread use of curved screens (or flexible screens), the existing screen support device architectures are gradually becoming inadequate to meet market demands. Therefore, the applicant believes that the aforementioned deficiencies can be improved and proposes this utility model with a reasonable design that effectively addresses these deficiencies. Utility Model Content

[0003] This utility model provides a screen support device that can effectively improve the defects that may occur in existing screen support devices.

[0004] This utility model discloses a screen support device, comprising: a support base having a central section and two side sections located on opposite sides of the central section; a co-movement mechanism installed on the central section; and two linkage mechanisms installed on the two side sections respectively. Each linkage mechanism includes: a linkage rod pivotally connected to the co-movement mechanism; and a limiting rod pivotally connected to the corresponding side section; and two slide rail mechanisms pivotally connected to the two side sections and the two linkage mechanisms respectively. Each slide rail mechanism includes: a track member pivotally connected to the linkage rod of the corresponding side section and the corresponding linkage mechanism; and a sliding member slidably disposed on the track member and pivotally connected to the limiting rod of the corresponding linkage mechanism. The screen support device can drive the two slide rail mechanisms to rotate synchronously by the same angle between a first position and a second position in two opposite rotational directions by moving at least one sliding member along the corresponding track member, via the two linkage mechanisms and the co-movement mechanism.

[0005] Optionally, the co-moving mechanism includes two co-moving rods, with one end of the two co-moving rods meshing with each other, and the other end of the two co-moving rods respectively pivotally connected to the connecting rods of two linkage mechanisms.

[0006] Optionally, the screen support device includes two positioning mechanisms respectively installed on two side wing sections, and each positioning mechanism has a first limiting part and a second limiting part, and the track component of each slide rail mechanism includes a positioning part; wherein, when the two slide rail mechanisms are in the first position, the two positioning parts are respectively limited to the first limiting parts of the two positioning mechanisms; wherein, when the two slide rail mechanisms are in the second position, the two positioning parts are respectively limited to the second limiting parts of the two positioning mechanisms.

[0007] Optionally, each positioning mechanism includes: two elastic members, which are spaced apart from each other and mounted on corresponding side sections; a limiting member, the two ends of which are respectively mounted on the two elastic members, and the limiting member has a first limiting portion and a second limiting portion located between the two ends; wherein, the two elastic members of each positioning mechanism abut against the limiting member so that the corresponding positioning portion is limited by the first limiting portion or the second limiting portion.

[0008] Optionally, each linkage includes an auxiliary rod, which is pivotally connected to the connecting rod and the corresponding side wing segment.

[0009] Optionally, when the two slide rail mechanisms are in the first position, the screen support device is mounted on a flat screen, and when the two slide rail mechanisms are in the second position, the screen support device is mounted on a curved screen.

[0010] Optionally, the screen support device is mounted on a flexible screen, and the two slide rail mechanisms move between a first position and a second position while the flexible screen is bent.

[0011] This utility model also discloses a screen support device, including: a support base having a central section and two side sections located on opposite sides of the central section; a co-movement mechanism installed on the central section; a control mechanism linked to the co-movement mechanism; and two linkage mechanisms installed on the two side sections respectively. Each linkage mechanism includes: a linkage rod pivotally connected to the co-movement mechanism; and a limiting rod pivotally connected to the corresponding side section; and two slide rail mechanisms pivotally connected to the two side sections and installed on the two linkage mechanisms respectively. Each slide rail mechanism includes: a track member pivotally connected to the linkage rod of the corresponding side section and the corresponding linkage mechanism; and a sliding member slidably disposed on the track member, and the sliding member pivotally connected to the limiting rod of the corresponding linkage mechanism. The screen support device can drive the co-movement mechanism by rotating the control mechanism, thereby driving the two slide rail mechanisms to rotate synchronously by the same angle between a first position and a second position along two opposite rotational directions via the two linkage mechanisms, and causing each sliding member to move along the corresponding track member.

[0012] Optionally, the synchronous mechanism includes: two helical gears arranged at intervals from each other; two synchronous rods, one end of which is fixed to the two helical gears respectively, and the other end of which is pivotally connected to the connecting rods of two linkage mechanisms respectively; wherein, the control mechanism includes a drive gear meshing between the two helical gears and a control lever fixed to the drive gear; wherein, the control lever drives the two helical gears to rotate synchronously by the same angle in two opposite rotational directions.

[0013] Optionally, the synchronous mechanism includes: two helical gears arranged at a distance from each other; two synchronous rods, one end of which is fixed to the two helical gears respectively, and the other end of which is pivotally connected to the connecting rods of two linkage mechanisms respectively; wherein, the screen support device includes a support base, and the central section of the bearing base is mounted on the support base; wherein, the control mechanism includes: a drive gear meshing between the two helical gears; a linkage component arranged along the support base, and one end of the linkage component is connected to the drive gear; a control lever mounted on the other end of the linkage component; wherein, the control lever can be rotated to drive the two helical gears to rotate synchronously by the same angle in two opposite rotational directions through the linkage component.

[0014] In summary, the screen support device disclosed in this utility model embodiment adopts an architecture in which two slide rail mechanisms are combined with the co-movement mechanism through the bearing seat and two linkage mechanisms to achieve synchronous rotation, thereby enabling the screen support device to be in the first position or the second position through the two slide rail mechanisms, thus making it suitable for installation on different types of screens.

[0015] To further understand the features and technical content of this utility model, please refer to the following detailed description and drawings of this utility model. However, these descriptions and drawings are only used to illustrate this utility model and are not intended to limit the scope of protection of this utility model in any way. Attached Figure Description

[0016] Figure 1 This is a perspective view of the screen support device in the first position according to Embodiment 1 of this utility model.

[0017] Figure 2 This is a perspective view of the screen support device in the second position according to Embodiment 1 of this utility model.

[0018] Figure 3 for Figure 1 A partial top-view diagram.

[0019] Figure 4 for Figure 2 A partial top-view diagram.

[0020] Figure 5 This is a three-dimensional schematic diagram of the screen support device of Embodiment 1 of this utility model for installing a flexible screen.

[0021] Figure 6 This is a three-dimensional schematic diagram of the screen support device according to Embodiment 1 of this utility model, omitting the support base.

[0022] Figure 7 for Figure 6 An enlarged schematic diagram.

[0023] Figure 8 for Figure 7 A schematic diagram of the joystick rotation.

[0024] Figure 9 This is a perspective view of the screen support device in the first position according to Embodiment 3 of this utility model.

[0025] Figure 10 This is a perspective view of the screen support device in the second position according to Embodiment 3 of this utility model. Detailed Implementation

[0026] The following specific embodiments illustrate the implementation of the "screen support device" disclosed in this utility model. Those skilled in the art can understand the advantages and effects of this utility model from the content disclosed in this specification. This utility model can be implemented or applied through other different specific embodiments, and various details in this specification can also be modified and changed based on different viewpoints and applications without departing from the concept of this utility model. Furthermore, it should be stated in advance that the accompanying drawings of this utility model are for simple illustration only and are not depictions based on actual dimensions. The following embodiments will further describe the relevant technical content of this utility model in detail, but the disclosed content is not intended to limit the scope of protection of this utility model.

[0027] It should be understood that while terms such as “first,” “second,” and “third” may be used in this document to describe various elements or features, these elements or features should not be limited by these terms. These terms are primarily used to distinguish one element from another, or one feature from another. Furthermore, the term “or” as used herein may, depending on the context, include any combination of one or more of the related listed items.

[0028] [Example 1]

[0029] Please see Figures 1 to 5 As shown, this is one embodiment of the present invention. Figures 1 to 4 As shown, this embodiment discloses a screen support device 100, which includes a support base 1, a carrier base 2 installed on the support base 1, a co-movement mechanism 3 installed on the carrier base 2, two slide rail mechanisms 5 respectively pivotally connected to opposite ends of the carrier base 2, two linkage mechanisms 4 installed on the carrier base 2 and the co-movement mechanism 3 and respectively connected to the two slide rail mechanisms 5, and two positioning mechanisms 6 installed on the carrier base 2 and whose positions correspond to the two slide rail mechanisms 5 respectively. However, this utility model is not limited to this.

[0030] For example, in other embodiments not shown in this utility model, the support base 1 and / or the two positioning mechanisms 6 of the screen support device 100 may be omitted or replaced with other components according to actual needs. The following will first describe the structure and connection relationship of the various components of the screen support device 100, and then explain the feasible application methods of the screen support device 100.

[0031] In this embodiment, the support base 1 can be used to be mounted on a work surface (e.g., a desktop), and the support base 1 can be configured with other related components (e.g., a pivot mechanism or a lifting and positioning mechanism) according to actual needs, which will not be described in detail here. Furthermore, in other embodiments not shown in this utility model, the support base 1 can be a hanging type, so that the screen support device 100 can be suspended from the wall or hung from the ceiling.

[0032] In this embodiment, the support base 2 is generally elongated, and it can be constructed from a single component or by assembling multiple components, depending on actual needs. Furthermore, the support base 2 includes a central section 21 and two side sections 22 located on opposite sides of the central section 21. In this embodiment, the support base 2 is rotatably pivotally connected to the support base 1 via the central section 21, but this invention is not limited to this.

[0033] The co-movement mechanism 3 is mounted (e.g., pivotally connected) to the central section 21 of the support base 2, and the co-movement mechanism 3 includes at least two interconnected components that can rotate synchronously by the same angle in two opposite rotational directions (e.g., clockwise and counterclockwise). However, since the co-movement mechanism 3 has various architectures that can achieve the above functions, for the sake of explaining this embodiment, the following description will use one architecture of the co-movement mechanism 3 (e.g., the co-movement mechanism 3 includes two co-movement rods 31 with one end meshing with each other), but this utility model is not limited thereto.

[0034] The two linkage mechanisms 4 are respectively installed on the two side wing sections 22 of the bearing seat 2 and enable the two slide rail mechanisms 5 to move in conjunction with the co-movement mechanism 3. In this embodiment, the two linkage mechanisms 4 are described in a mirror-symmetrical configuration, but the present invention is not limited thereto. Each linkage mechanism 4 includes a connecting rod 41 pivotally connected to the co-movement mechanism 3, an auxiliary rod 42 pivotally connected to the connecting rod 41 and the corresponding side wing section 22, and a limiting rod 43 pivotally connected to the corresponding side wing section 22.

[0035] More specifically, the two connecting rods 41 are respectively arranged along the two side wing sections 22, and one end of each connecting rod 41 is pivotally connected to the other end of each of the two moving rods 31, while the other end of each connecting rod 41 is pivotally connected to the two slide rail mechanisms 5. Furthermore, both ends of each auxiliary rod 42 are pivotally connected to the approximate center of the corresponding connecting rod 41 and the approximate center of the corresponding side wing section 22, while one end of each of the two limiting rods 43 is pivotally connected to the far-away ends of the two side wing sections 22.

[0036] It should be further noted that, in other embodiments of this utility model not shown, the two linkage mechanisms 4 can also be adjusted and varied according to actual needs. For example, the two linkage mechanisms 4 can be non-mirror-symmetrically configured; or, the auxiliary rod 42 of at least one linkage mechanism 4 can be omitted or replaced by other components.

[0037] The two slide rail mechanisms 5 are respectively pivotally connected to the two side wing sections 22 of the bearing seat 2 and respectively mounted on the two linkage mechanisms 4. However, since the two slide rail mechanisms 5 are arranged in a mirror-symmetric configuration in this embodiment, for ease of understanding this embodiment, the following description will focus on the construction of one of the slide rail mechanisms 5, but the present invention is not limited thereto. For example, in other embodiments of the present invention not shown, the two slide rail mechanisms 5 may be non-mirror-symmetric.

[0038] In this embodiment, the slide rail mechanism 5 includes a track member 51 and a sliding member 52 slidably disposed on the track member 51. The track member 51 is pivotally connected to the corresponding side wing segment 22 and the corresponding linkage mechanism 4's connecting rod 41, and the sliding member 52 is pivotally connected to the corresponding linkage mechanism 4's limiting rod 43.

[0039] Furthermore, the track component 51 includes a base 511 and a track portion 512 fixed to the base 511. The base 511 is L-shaped, with its L-shaped inflection point pivotally connected to the corresponding side wing segment 22, and its short side pivotally connected to the other end of the corresponding connecting rod 41. The sliding member 52 is slidably disposed on the track portion 512 and pivotally connected to the other end of the corresponding limiting rod 43. However, this invention is not limited to this. For example, in other embodiments not shown in this invention, the track component 51 may also be a single-piece structure according to actual needs.

[0040] As described above, in this embodiment, the screen support device 100 can move at least one of the sliding members 52 along the corresponding track member 51 (e.g., at least one of the slide rail mechanisms 5 can move the sliding member 52 by bearing the force applied by the user), thereby driving the two slide rail mechanisms 5 to a first position along two opposite rotational directions (e.g., via the two linkage mechanisms 4 and the synchronous mechanism 3). Figure 1 and Figure 3 ) and a second position (e.g.: Figure 2 and Figure 4 They rotate synchronously at the same angle.

[0041] Therefore, the screen support device 100 adopts an architecture in which two slide rail mechanisms 5 are combined with the synchronous movement mechanism 3 through the bearing seat 2 and the two linkage mechanisms 4 to achieve synchronous rotation, so that the screen support device 100 can be in the first position or the second position through the two slide rail mechanisms 5, thus making it suitable for installation on different types of screens.

[0042] Furthermore, such as Figure 1 and Figure 3 As shown, the screen support device 100 can be mounted on a flat screen 200a when the two slide rail mechanisms 5 are in the first position; or, as... Figure 2 and Figure 4 As shown, the screen support device 100 can also be installed on a curved screen 200b when the two slide rail mechanisms 5 are in the second position.

[0043] Or, as Figure 5 As shown, the screen support device 100 is mounted on a flexible screen 200c and allows the two sliding rail mechanisms 5 to move between the first position and the second position while the flexible screen 200c is bent. Furthermore, the architecture of the screen support device 100 also provides users with intuitive operation (e.g., the user directly applies force to both sides of the flexible screen 200c) to rotate the two sliding rail mechanisms 5 between the first position and the second position, thereby providing an optional user experience.

[0044] It should be noted that, in order to ensure that the two slide rail mechanisms 5 can be stably positioned in the first position or the second position, the screen support device 100 in this embodiment is achieved by having two positioning mechanisms 6 respectively installed on the two side wing sections 22 of the support base 2 and respectively matched with the two slide rail mechanisms 5.

[0045] More specifically, each positioning mechanism 6 has a first limiting portion 611 and a second limiting portion 612, and each track member 51 includes a positioning portion 513 (distributed in the track portion 512). When the two slide rail mechanisms 5 are in the first position, the two positioning portions 513 are respectively limited to the first limiting portions 611 of the two positioning mechanisms 6. Furthermore, when the two slide rail mechanisms 5 are in the second position, the two positioning portions 513 are respectively limited to the second limiting portions 612 of the two positioning mechanisms 6.

[0046] Furthermore, the two positioning mechanisms 6 in this embodiment adopt substantially the same structure, and since the positioning mechanism 6 has multiple architectures capable of achieving the above functions, for ease of explanation of this embodiment, the following description will use one architecture of the positioning mechanism 6, but this utility model is not limited thereto. For example, in other embodiments of this utility model not shown, the two positioning mechanisms 6 may adopt different structures; or, at least one of the two positioning mechanisms 6 may be omitted or replaced with other components according to actual needs.

[0047] In this embodiment, the positioning mechanism 6 includes two elastic elements 62 (e.g., springs) and a limiting member 61 with its two ends respectively mounted on the two elastic elements 62. The two elastic elements 62 are mounted at intervals on corresponding side wing sections 22, and the limiting member 61 has a first limiting portion 611 and a second limiting portion 612 located between the two ends.

[0048] Thus, the two elastic members 62 of each positioning mechanism 6 abut against the limiting member 61, so that the corresponding positioning part 513 is restricted by the first limiting part 611 or the second limiting part 612, thereby achieving the positioning effect. For example, during the process of any of the slide rail mechanisms 5 rotating from the first position to the second position, the positioning part 513 disengages from the first limiting part 611 and abuts against the limiting member 61, so that the limiting member 61 moves and compresses the two elastic members 62 to deform and continue to have a restoring elastic force. Then, when the positioning part 513 moves to the second limiting part 612, the two elastic members 62 release the restoring elastic force, so that the second limiting part 612 compresses and limits the positioning part 513.

[0049] Furthermore, in this embodiment, the first limiting part 611 and the second limiting part 612 are each presented with a groove-shaped structure, while the positioning part 513 is a corresponding column-shaped structure. However, this utility model is not limited thereto. For example, in other embodiments of this utility model not shown, the first limiting part 611 and the second limiting part 612 may adopt a protruding structure, while the positioning part 513 adopts a corresponding groove-shaped structure.

[0050] [Example 2]

[0051] Please see Figures 6 to 8 As shown, this is Embodiment Two of the present invention. Since this embodiment is similar to Embodiment One described above, the similarities between the two embodiments will not be repeated (e.g., the support base 1, the bearing base 2, the two linkage mechanisms 4, the two slide rail mechanisms 5, and the two positioning mechanisms 6). The main differences between this embodiment and Embodiment One described above are as follows:

[0052] The co-movement mechanism 3 in this embodiment is different from that in Embodiment 1, and the screen support device 100 in this embodiment further includes a control mechanism 7 connected to the co-movement mechanism 3, so that the screen support device 100 can control the rotation of the two slide rail mechanisms 5 through the control mechanism 7.

[0053] Furthermore, the screen support device 100 can drive the synchronous mechanism 3 by rotating the control mechanism 7, so as to drive the two slide rail mechanisms 5 to rotate synchronously at the same angle between the first position and the second position in two opposite rotation directions via the two linkage mechanisms 4, and to move each of the sliding members 52 along the corresponding track member 51.

[0054] Furthermore, in this embodiment, the co-moving mechanism 3 includes two helical gears 32 arranged at intervals from each other and two co-moving rods 31 respectively fixed to the two helical gears 32. One end of each of the two co-moving rods 31 is fixed to the two helical gears 32 and meshes with each other, while the other ends of each of the two co-moving rods 31 are pivotally connected to the connecting rods 41 of the two linkage mechanisms 4. That is, the construction of the two co-moving rods 31 in this embodiment is generally the same as in Embodiment 1, but this utility model is not limited thereto. For example, in other embodiments of this utility model not shown, the two co-moving rods 31 may also be spaced apart from each other and not meshed.

[0055] The control mechanism 7 includes a drive gear 71 meshing between the two helical gears 32 and a control lever 72 fixed to the drive gear 71. Thus, the control lever 72 can be rotated to drive the two helical gears 32 (or the two synchronous mechanisms 3) to rotate synchronously by the same angle in two opposite rotational directions (e.g., clockwise and counterclockwise), thereby driving the two slide rail mechanisms 5 to rotate between the first position and the second position via the two linkage mechanisms 4, and causing each sliding member 52 to move along the corresponding track member 51.

[0056] It should be noted that, in this embodiment, the joystick 72 is described as being located above the synchronous mechanism 3, so that the user can operate the joystick 72 from above the screen support device 100. However, this utility model is not limited thereto. For example, in other embodiments not shown in this utility model, the joystick 72 may also be configured below or to one side of the synchronous mechanism 3, depending on actual needs.

[0057] [Example 3]

[0058] Please see Figure 9 and Figure 10 As shown, this is Embodiment 3 of the present invention. Since this embodiment is similar to Embodiment 2 described above, the similarities between the two embodiments will not be repeated. The main difference between this embodiment and Embodiment 2 lies in the control mechanism 7, which is described in general as follows:

[0059] In this embodiment, the control mechanism 7 includes a drive gear 71, a control lever 72, and a linkage component 73 connecting the drive gear 71 and the control lever 72. The drive gear 71 meshes between two helical gears 32. The linkage component 73 is disposed along the support base 1, with one end connected to the drive gear 71 and the other end mounted on the control lever 72 and located below the synchronous mechanism 3.

[0060] Thus, the control lever 72 can be rotated to drive the two helical gears 32 (or the two synchronous mechanisms 3) to rotate synchronously by the same angle in two opposite rotational directions (e.g., clockwise and counterclockwise) via the linkage assembly 73, thereby driving the two slide rail mechanisms 5 to rotate between the first position and the second position via the two linkage mechanisms 4, and causing each of the sliding members 52 to move along the corresponding track member 51.

[0061] It should be noted that, in this embodiment, the linkage component 73 is formed by components such as shafts, bevel gears and universal joints being matched with each other and arranged along the internal space of the support base 1, but the specific structure of the linkage component 73 is not limited thereto.

[0062] [Technical Effects of the Embodiments of this Utility Model]

[0063] In summary, the screen support device disclosed in this utility model embodiment adopts an architecture in which two slide rail mechanisms are combined with the co-movement mechanism through the bearing seat and two linkage mechanisms to achieve synchronous rotation, thereby enabling the screen support device to be in the first position or the second position through the two slide rail mechanisms, thus making it suitable for installation on different types of screens.

[0064] Furthermore, the screen support device disclosed in this utility model embodiment can adopt a structure in which at least one of the slide rail mechanisms bears the force applied by the user, or a structure in which the control lever bears the force applied by the user, depending on actual needs, so as to realize the rotation of the two slide rail mechanisms between the first position and the second position.

[0065] The above-disclosed content is only a preferred and feasible embodiment of the present utility model, and is not intended to limit the patent scope of the present utility model. Therefore, all equivalent technical changes made based on the contents of the present utility model specification and drawings are included in the patent scope of the present utility model.

Claims

1. A screen support device, characterized in that, The screen support device includes: A support base having a central section and two side sections located on opposite sides of the central section; A co-moving mechanism is installed in the central section; Two linkage mechanisms are respectively installed on the two side wing sections; wherein each linkage mechanism includes: A linkage, pivotally connected to the same moving mechanism; and A limiting rod, pivotally connected to the corresponding side wing section; and Two slide rail mechanisms are pivotally connected to the two side wing sections and the two linkage mechanisms, respectively; wherein each slide rail mechanism includes: A track component, pivotally connected to the connecting rod of the corresponding side wing segment and the corresponding linkage mechanism; and A sliding member is slidably disposed on the track member, and the sliding member is pivotally connected to the limiting rod of the corresponding linkage mechanism; The screen support device can drive two slide rail mechanisms to rotate synchronously between a first position and a second position by moving at least one of the sliding members along the corresponding track members via the two linkage mechanisms and the synchronous mechanism.

2. The screen support device according to claim 1, characterized in that, The co-moving mechanism includes two co-moving rods, one end of which meshes with each other, and the other end of which is pivotally connected to the connecting rod of the two linkage mechanisms.

3. The screen support device according to claim 1, characterized in that, The screen support device includes two positioning mechanisms respectively installed on the two side wing sections, and each positioning mechanism has a first limiting part and a second limiting part, while the track component of each slide rail mechanism includes a positioning part; wherein, when the two slide rail mechanisms are in the first position, the two positioning parts are respectively limited to the first limiting parts of the two positioning mechanisms; wherein, when the two slide rail mechanisms are in the second position, the two positioning parts are respectively limited to the second limiting parts of the two positioning mechanisms.

4. The screen support device according to claim 3, characterized in that, Each of the positioning mechanisms includes: Two elastic members are installed at intervals on the corresponding side wing sections; and A limiting member, wherein both ends of the limiting member are respectively mounted on the two elastic members, and the limiting member has a first limiting portion and a second limiting portion located between the two ends of the limiting member; In each of the positioning mechanisms, two elastic elements abut against the limiting element, so that the corresponding positioning part is limited by the first limiting part or the second limiting part.

5. The screen support device according to claim 1, characterized in that, Each of the linkage mechanisms includes an auxiliary rod, which is pivotally connected to the connecting rod and the corresponding side wing segment.

6. The screen support device according to claim 1, characterized in that, When the two slide rail mechanisms are in the first position, the screen support device is mounted on a flat screen, and when the two slide rail mechanisms are in the second position, the screen support device is mounted on a curved screen.

7. The screen support device according to claim 1, characterized in that, The screen support device is mounted on a flexible screen and moves the two sliding rail mechanisms between the first position and the second position while the flexible screen is bent.

8. A screen support device, characterized in that, The screen support device includes: A support base having a central section and two side sections located on opposite sides of the central section; A co-moving mechanism is installed in the central section; A control mechanism, which is linked to the co-moving mechanism; Two linkage mechanisms are respectively installed on the two side wing sections; wherein each linkage mechanism includes: A linkage, pivotally connected to the same moving mechanism; and A limiting rod, pivotally connected to the corresponding side wing section; and Two slide rail mechanisms are pivotally connected to the two side wing sections respectively, and are respectively mounted on the two linkage mechanisms; wherein, each slide rail mechanism includes: A track component, pivotally connected to the connecting rod of the corresponding side wing segment and the corresponding linkage mechanism; and A sliding member is slidably disposed on the track member, and the sliding member is pivotally connected to the limiting rod of the corresponding linkage mechanism; The screen support device can drive the synchronous mechanism by rotating the control mechanism, so as to drive the two slide rail mechanisms to rotate synchronously at the same angle between a first position and a second position in two opposite rotational directions via the two linkage mechanisms, and make each of the sliding members move along the corresponding track member.

9. The screen support device according to claim 8, characterized in that, The synchronous mechanism includes: Two helical gears, spaced apart from each other; and Two moving rods, one end of each of the two moving rods is fixed to the two helical gears, and the other end of each of the two moving rods is pivotally connected to the connecting rod of the two linkage mechanisms; The control mechanism includes a drive gear meshing between the two helical gears and a control lever fixed to the drive gear; wherein the control lever drives the two helical gears to rotate synchronously by the same angle in two opposite rotational directions.

10. The screen support device according to claim 8, characterized in that, The synchronous mechanism includes: Two helical gears, spaced apart from each other; and Two moving rods, one end of each of the two moving rods is fixed to the two helical gears, and the other end of each of the two moving rods is pivotally connected to the connecting rod of the two linkage mechanisms; The screen support device includes a support base, and the central section of the support base is mounted on the support base; the control mechanism includes: A drive gear meshes between the two helical gears; A linkage component is configured along the support base, and one end of the linkage component is connected to the drive gear; and A control lever is mounted at the other end of the linkage assembly; wherein the control lever can be rotated to drive the two helical gears to rotate synchronously by the same angle in two opposite directions of rotation via the linkage assembly.

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