Supporting device

Abstract

The utility model provides a supporting device, which comprises a fixing module, a supporting module and a supporting module. The fixing module comprises at least one left outer pivot part and at least one right outer pivot part; the bearing module comprises at least one left inner pivot part and at least one right inner pivot part; the at least one left shell piece is pivoted to the left outer pivot part and comprises two left track parts corresponding to each other; the at least one left inner shell part is arranged on the left rail part in a sliding manner and is pivoted to the left inner pivot part; the at least one right shell piece is pivoted to the right outer pivot part and comprises two right track parts corresponding to each other; and the at least one right inner shell piece is arranged on the right rail part in a sliding manner and is pivoted to the right inner pivot part.

Description

Technical Field

[0001] This utility model provides a support device, and more particularly a support device with a thin overall structure. Background Technology

[0002] TWM630456 discloses a wall mount bracket, which includes a hanging bracket, a first telescopic bracket, a second telescopic bracket, and a support bracket. The hanging bracket is mounted on the wall, the first telescopic bracket is mounted on the hanging bracket, the second telescopic bracket is mounted on the first telescopic bracket, and the support bracket is mounted on the second telescopic bracket. A monitor is mounted on the support bracket. The first telescopic bracket and the second telescopic bracket are connected by two intersecting rods to form an openable and closable X-shaped linkage, so that the first telescopic bracket and the second telescopic bracket can be opened, closed, and telescopic.

[0003] However, the aforementioned X-shaped linkage still occupies a certain amount of space when retracted, and the structure of the X-shaped linkage cannot effectively make the wall mount thinner, causing the monitor to protrude significantly from the wall, creating a visually abrupt feeling. Utility Model Content

[0004] This utility model provides a support device for supporting a display on a working surface. The display defines a screen normal, and the working surface defines a center normal. The support device includes: a fixing module fixed to the working surface and comprising at least one left outer pivot portion and at least one right outer pivot portion, the left outer pivot portion defining a left outer axis, and the right outer pivot portion defining a right outer axis; a carrying module for supporting the display and comprising at least one left inner pivot portion and at least one right inner pivot portion, the left inner pivot portion defining a left inner axis, and the right inner pivot portion defining a right inner axis; at least one left outer shell component pivotally connected to the left outer pivot portion and pivotable relative to the fixing module about the left outer axis, and comprising two corresponding left rail portions; at least one left inner shell component slidably disposed on the left rail portion and pivotally connected to the left inner pivot portion, and pivotable relative to the carrying module about the left inner axis. In the configuration, a left overlapping region is defined between the left inner shell and the left outer shell; at least one right outer shell is pivotally connected to the right outer pivot portion and is pivotable relative to the fixed module about the right outer axis, and includes two corresponding right track portions; and at least one right inner shell is slidably disposed on the right track portion and pivotally connected to the right inner pivot portion, and is pivotable relative to the support module about the right inner axis, wherein a right overlapping region is defined between the right inner shell and the right outer shell; wherein the support module can switch between an unfolded state and a retracted state, in which the support module is closest to the fixed module, and the left and right overlapping regions are at their maximum, and the screen normal is parallel to or overlaps the central normal; in which which the support module is furthest from the fixed module, and the left and right overlapping regions are at their minimum, and the screen normal is parallel to or overlaps the central normal.

[0005] As described above, when the screen normal is parallel to or overlaps with the center normal, when the support module changes from the retracted state to the unfolded state, the support module gradually moves away from the fixed module, and the left and right overlapping areas gradually decrease. When the support module changes from the unfolded state to the retracted state, the support module gradually moves closer to the fixed module, and the left and right overlapping areas gradually increase.

[0006] As described above, in the case where the screen normal is parallel to or overlaps with the central normal, the area of ​​the left overlapping region is the same as the area of ​​the right overlapping region.

[0007] As described above, by making the area of ​​the left overlapping region different from the area of ​​the right overlapping region, the screen normal and the center normal of the working surface can be made to form an angle, and the greater the difference between the area of ​​the left overlapping region and the area of ​​the right overlapping region, the larger the angle.

[0008] As described above, when the area of ​​the left overlapping region is greater than the area of ​​the right overlapping region, the display is relatively close to the left outer pivot and far away from the right outer pivot. When the area of ​​the left overlapping region is smaller than the area of ​​the right overlapping region, the display is relatively far away from the left outer pivot and close to the right outer pivot.

[0009] As described above, the left outer shell also includes a left stop post, the left inner shell includes a left limiting through groove, the left stop post is slidably disposed in the left limiting through groove, the right outer shell also includes a right stop post, the right inner shell includes a right limiting through groove, the right stop post is slidably disposed in the right limiting through groove.

[0010] As described above, the left limiting slot has a left head end and a left tail end, and the right limiting slot has a right head end and a right tail end. When the carrying module is in the retracted state, the left stop post abuts against the left head end and the right stop post abuts against the right head end. When the carrying module is in the unfolded state, the left stop post abuts against the left tail end and the right stop post abuts against the right tail end.

[0011] As described above, the supporting device includes two left sliders and two left wing plates spaced apart from each other. The left sliders are respectively fitted onto the left wing plates and slid on the left track portion. The right inner shell also includes two right sliders and two right wing plates spaced apart from each other. The right sliders are respectively fitted onto the right wing plates and slid on the right track portion.

[0012] As described above, the left outer casing further includes a left outer main board and a left outer pivot portion. The left outer pivot portion is located at one end of the left outer main board and is pivotally connected to the left outer pivot portion. The left track portion is formed by extending outward and bending from opposite sides of the left outer main board. The left stop post is located on the left outer main board. The right outer casing further includes a right outer main board and a right outer pivot portion. The right outer pivot portion is located at one end of the right outer main board and is pivotally connected to the right outer pivot portion. The right track portion is formed by extending outward and bending from opposite sides of the right outer main board. The right stop post is located on the right outer main board.

[0013] As described above, the left inner shell further includes a left inner main board and a left inner pivot portion. The left inner pivot portion is located at one end of the left inner main board and is pivotally connected to the left inner pivot portion. The left wing plates extend outward from opposite sides of the left inner main board. The left limiting through groove is formed through the left inner main board and is located between the left wing plates. The right inner shell further includes a right inner main board and a right inner pivot portion. The right inner pivot portion is located at one end of the right inner main board and is pivotally connected to the right inner pivot portion. The right wing plates extend outward from opposite sides of the right inner main board. The right limiting through groove is formed through the right inner main board and is located between the right wing plates.

[0014] As described above, the fixing module further includes multiple outer shafts, and the bearing module further includes multiple inner shafts. The outer shafts are respectively inserted along the left outer axis through the left outer pivot portion and the left outer pivot joint portion or along the right outer axis through the right outer pivot portion and the right outer pivot joint portion. The inner shafts are respectively inserted along the left inner axis through the left inner pivot portion and the left inner pivot joint portion or along the right inner axis through the right inner pivot portion and the right inner pivot joint portion.

[0015] As described above, the support module also includes a central motherboard and two support plates. The left inner pivot and the right inner pivot are respectively located on the opposite left and right sides of the central motherboard, and the support plates are respectively located on the opposite upper and lower sides of the central motherboard, and are used to support the display.

[0016] As described above, the central main board and the supporting plate are H-shaped.

[0017] As described above, the fixing module also includes two fixing main boards, a left connecting plate and a right connecting plate. The fixing main boards are fixed to the working surface at intervals. The left connecting plate is connected to the left end of the fixing main board and the left outer pivot is located on the left connecting plate. The right connecting plate is connected to the right end of the fixing main board and the right outer pivot is located on the right connecting plate.

[0018] As described above, the supporting device, including the fixed main board, the left connecting plate, the right connecting plate, the central main board, the bearing plate, the left outer shell, the left inner shell, the right outer shell, and the right inner shell, is made of metal.

[0019] In summary, by integrating the fixed main board, left connecting plate, right connecting plate, central main board, bearing plate, left outer shell, left inner shell, right outer shell, and right inner shell into a single plate, the thickness of the support device can be effectively reduced, and the display can be placed close to the wall. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall support device of this utility model.

[0021] Figure 2 This is an exploded view of the support device of this utility model.

[0022] Figure 3 and Figure 4 This is an exploded view of some components of the support device of this utility model.

[0023] Figure 5 This is a front view of the support device of this utility model in its stored state.

[0024] Figure 6 This is an overall schematic diagram of the support device of this utility model in its unfolded state.

[0025] Figure 7 This is a front view of the support device of this utility model in its unfolded state.

[0026] Figure 8 This is a schematic diagram of the support device of this utility model rotating to the left in the unfolded state.

[0027] Figure 9 This is a schematic diagram of the support device of this utility model rotating to the right in the unfolded state.

[0028] Explanation of main component symbols

[0029] 1000 Support device 41 Right outer mainboard

[0030] 2000 Monitor 42 Right External Pivot

[0031] 2001 Screen Normal 43 Right Track Section

[0032] 3000 Working face 44 Right stop column

[0033] 3001 Center Normal 5 Right Inner Shell

[0034] 1. Fixed Module 51 Right Inner Mainboard

[0035] 11. Fixed motherboard 52. Right inner pivot joint

[0036] 12 Left connecting plate 53 Right wing plate

[0037] 13 Right connecting plate 54 Right limit slot

[0038] 14 Left outer pivot section 541 Right head end

[0039] 15 Right outer pivot section 542 Right tail end

[0040] 16 Outer shaft 55 Right slider

[0041] 2. Left outer casing 6. Load-bearing module

[0042] 21 Left outer motherboard 61 Central motherboard

[0043] 22 Left outer pivot joint 62 Bearing plate

[0044] 23 Left rail part 621 concave part

[0045] 24 Left stop post 63 Left inner pivot section

[0046] 3 Left inner shell 64 Right inner pivot

[0047] 31 Left inner main board 65 Inner shaft

[0048] 32. Angles θ1 and θ2 at the left inner pivot point

[0049] 33 Left Wing A1 Left Overlapping Area

[0050] 34 Left limit groove A2 Right overlapping area

[0051] 341 Left head end X1 Left outer axis

[0052] 342 Left tail end X2 Left inner axis

[0053] 35 Left slider Y1 Right outer axis

[0054] 4. Right outer casing Y2 Right inner axis. Detailed Implementation

[0055] Please see Figure 1 and Figure 2This utility model discloses a support device 1000 for supporting a display 2000 on a working surface 3000 (e.g., a wall). The support device 1000 includes a fixing module 1, two left outer shell parts 2, two left inner shell parts 3, two right outer shell parts 4, two right inner shell parts 5, and a support module 6. The fixing module 1 is fixed to the working surface 3000. The left outer shell parts 2 are pivotally connected to one side of the fixing module 1. The left inner shell parts 3 are slidably disposed within the left outer shell parts 2 and pivotally connected to one side of the support module 6. The right outer shell parts 4 are pivotally connected to the other side of the fixing module 1. The right inner shell parts 5 are slidably disposed within the right outer shell parts 4 and pivotally connected to the other side of the support module 6. The structure of each component and their connection relationship will be described in detail below. The display 2000 defines a screen normal 2001, and the working surface 3000 defines a center normal 3001.

[0056] The fixed module 1 includes two fixed main plates 11, a left connecting plate 12, a right connecting plate 13, four left outer pivot parts 14, four right outer pivot parts 15, and four outer shafts 16. The fixed main plates 11 are generally elongated plates, fixedly attached to the working surface 3000 at intervals. The left connecting plate 12 is generally an elongated plate, with its two ends connected to the left ends of the fixed main plates 11. The right connecting plate 13 is generally an elongated plate, with its two ends connected to the right ends of the fixed main plates 11. The combined fixed main plates 11, left connecting plates 12, and right connecting plates 13 form a rectangular frame. The left outer pivot parts 14 extend outward from one side of the left connecting plate 12 at intervals and are bent to form a C-shaped cross-section, and the center of the C-shaped cross-section of the left outer pivot part 14 can define a left outer axis X1. The right outer pivot portions 15 extend outward from one side of the right connecting plate 13 at intervals and are bent to form a C-shaped cross section, and the center of the C-shaped cross section of the right outer pivot portion 15 can define a right outer axis Y1.

[0057] Please see Figure 3 and Figure 5 Each of the left outer casing components 2 includes a left outer main plate 21, a left outer pivot portion 22, two left track portions 23, and a left stop post 24. The left outer main plate 21 is generally rectangular. The left outer pivot portion 22 extends outward from the left end of the left outer main plate 21 and is bent to form a C-shaped cross section, and is located between any two of the left outer pivot portions 14. The left track portions 23 extend outward from the opposite upper and lower sides of the left outer main plate 21 and are bent to form a U-shaped cross section, and the left track portions 23 are opposite to each other. The left stop post 24 (e.g., a screw) protrudes from the left outer main plate 21 and is located between the left track portions 23.

[0058] Each of the left inner shell components 3 includes a left inner main plate 31, a left inner pivot portion 32, two left wing plates 33, a left limiting through groove 34, and two left sliders 35. The left inner main plate 31 is generally rectangular. The left inner pivot portion 32 extends outward from the right end of the left inner main plate 31 and is bent to form a C-shaped cross-section. The left wing plates 33 extend outward from the opposite upper and lower sides of the left inner main plate 31, thereby forming a general T-shape with the left inner main plate 31, the left inner pivot portion 32, and the left wing plates 33. The left limiting through groove 34 is formed through the left inner main plate 31 and is located between the left wing plates 33, and has an opposite left head end 341 and a left tail end 342. The left sliders 35 are respectively sleeved on the left wing plates 33 and respectively slidably disposed on the left track portion 23. The left stop post 24 is slidably disposed in the left limiting groove 34. In this way, the left inner shell 3 can move left and right relative to the left outer shell 2 without separating from each other, and a left overlapping area A1 can be defined between the left outer shell 2 and the left inner shell 3. In this embodiment, the left sliders 35 are made of polyoxymethylene (POM) material.

[0059] Please see Figure 4 and Figure 5 Each of the right outer casing components 4 includes a right outer main plate 41, a right outer pivot portion 42, two right track portions 43, and a right stop post 44. The right outer main plate 41 is generally rectangular. The right outer pivot portion 42 extends outward from the right end of the right outer main plate 41 and is bent to form a C-shaped cross section, and is located between any two of the right outer pivot portions 15. The right track portions 43 extend outward from the opposite upper and lower sides of the right outer main plate 41 and are bent to form a U-shaped cross section, and the right track portions 43 correspond to each other. The right stop post 44 (e.g., a screw) protrudes from the right outer main plate 41 and is located between the right track portions 43.

[0060] Each of the right inner shell components 5 includes a right inner main plate 51, a right inner pivot portion 52, two right wing plates 53, a right limiting through groove 54, and two right sliders 55. The right inner main plate 51 is generally rectangular. The right inner pivot portion 52 extends outward from the left end of the right inner main plate 51 and is bent to form a C-shaped cross-section. The right wing plates 53 extend outward from the opposite upper and lower sides of the right inner main plate 51, thereby forming a general T-shape with the right inner main plate 51, the right inner pivot portion 52, and the right wing plates 53. The right limiting through groove 54 is formed through the right inner main plate 51 and is located between the right wing plates 53, and has an opposing right head end 541 and a right tail end 542. The right sliders 55 are respectively sleeved on the right wing plates 53 and respectively slidably disposed on the right track portions 43. The right stop post 44 is slidably disposed on the right limiting through groove 54. This allows the right inner shell 5 to move left and right relative to the right outer shell 4 without separating from each other, and a right overlapping area A2 can be defined between the right outer shell 4 and the right inner shell 5. In this embodiment, the right sliders 55 are made of polyoxymethylene (POM) material.

[0061] The support module 6 supports the display 2000 and includes a central main board 61, two support plates 62, four left inner pivot portions 63, four right inner pivot portions 64, and four inner shafts 65. The central main board 61 is generally rectangular. The support plates 62 are generally elongated plates and are respectively disposed on opposite upper and lower sides of the central main board 61, thereby forming an H shape. Each support plate 62 has two recesses 621 (see...). Figure 6 The monitor 2000 can be screwed to the back of the monitor 2000 so that the monitor 2000 can be mounted on the support module 6 by means of the screw snapping into the recess 621. A safety screw can also be inserted through the central motherboard 61 and locked to the back of the monitor 2000 to prevent the monitor 2000 from falling off.

[0062] The left inner pivot portions 63 extend outward from the left side of the central main board 61 at intervals and are bent to form a C-shaped cross section, and the center of the C-shaped cross section of the left inner pivot portion 63 can define a left inner axis X2. The left inner pivot portion 32 of each of the left inner shell members 3 is located between any two of the left inner pivot portions 63. The right inner pivot portions 64 extend outward from the right side of the central main board 61 at intervals and are bent to form a C-shaped cross section, and the center of the C-shaped cross section of the right inner pivot portion 64 can define a right inner axis Y2. The right inner pivot portion 52 of each of the right inner shell members 5 is located between any two of the right inner pivot portions 64.

[0063] Two of the outer shafts 16 are respectively inserted along the left outer axis X1 into the left outer pivot portion 14 and the left outer pivot portion 22, allowing the left outer shell 2 to pivotally connect to the left outer pivot portion 14. This enables the left outer shell 2 to pivot relative to the left connecting plate 12 about the left outer axis X1. The other two outer shafts 16 are respectively inserted along the right outer axis Y1 into the right outer pivot portion 15 and the right outer pivot portion 42, allowing the right outer shell 4 to pivotally connect to the right outer pivot portion 15. This enables the right outer shell 4 to pivot relative to the right connecting plate 13 about the right outer axis Y1. Two of the inner shafts 65 are respectively inserted along the left inner axis X2 into the left inner pivot portion 63 and the left inner pivot portion 32, allowing the left inner shell 3 to pivotally connect to the left inner pivot portion 63. This enables the left inner shell 3 to pivot relative to the central main plate 61 about the left inner axis X2. The other two inner shaft rods 65 are respectively inserted along the right inner axis Y2 into the right inner pivot portion 64 and the right inner pivot connection portion 52, so that the right inner shell 5 can be pivotally connected to the right inner pivot portion 64, thereby allowing the right inner shell 5 to pivot relative to the central main board 61 around the right inner axis Y2. In this embodiment, the outer shaft rod 16 and the inner shaft rod 65 are both screw rods, which can be fixed with nuts and washers, and will not be described in detail further.

[0064] The above embodiment is illustrated using two sets each of the left outer shell 2, the left inner shell 3, the right outer shell 4, and the right inner shell 5, and four sets each of the left outer pivot portion 14, the right outer pivot portion 15, the left inner pivot portion 63, and the right inner pivot portion 64 as examples. However, this utility model is not limited to this. The number of the left outer shell 2, the left inner shell 3, the right outer shell 4, and the right inner shell 5 can be designed according to requirements, and the number of the left outer pivot portion 14, the right outer pivot portion 15, the left inner pivot portion 63, and the right inner pivot portion 64 can also be adjusted accordingly.

[0065] In one embodiment, the fixed main board 11, the left connecting plate 12, the right connecting plate 13, the central main board 61, the support plate 62, the left outer shell 2, the left inner shell 3, the right outer shell 4, and the right inner shell 5 are made of metal (e.g., iron).

[0066] The following describes the operation of the support device 1000 of this utility model. When the screen normal 2001 is parallel to or overlaps with the center normal 3001, the supporting module 6 can move back and forth along the center normal 3001 of the working surface 3000 to a retracted state. Figure 5 ) and an unfolded state ( Figure 6 and Figure 7 The load-bearing module 6 is in the retracted state, and is closest to the fixed module 1. The load-bearing plates 62 are respectively attached to the fixed main board 11. The central main board 61 is located at the center of the fixed main board 11, the left connecting plate 12 and the right connecting plate 13. The central main board 61, the left outer shell 2, the left inner shell 3, the right outer shell 4 and the right inner shell 5 are roughly flush with the fixed main board 11, the left connecting plate 12 and the right connecting plate 13. At this time, the left stop post 24 abuts against the left end 341 of the left limiting through groove 34, and the right stop post 44 abuts against the right end 541 of the right limiting through groove 54. The left inner shell 3 is completely housed in the left outer shell 2, so that the area of ​​the left overlapping region A1 is maximized. The right inner shell 5 is completely housed in the right outer shell 4, so that the area of ​​the right overlapping region A2 is maximized.

[0067] When the carrying module 6 changes from the stored state to the unfolded state, the carrying module 6 moves along the center normal 3001 of the working surface 3000 and gradually moves away from the fixed module 1. The left outer shell 2 can pivot relative to the left connecting plate 12 about the left outer axis X1, and the left inner shell 3 can pivot relative to the central main board 61 about the left inner axis X2, so that the left outer shell 2 and the left inner shell 3 move relative to each other. The left inner shell 3 gradually extends out of the left outer shell 2, and the area of ​​the left overlapping area A1 gradually decreases until the left stop post 24 abuts against the left tail end 342 of the left limiting through groove 34. Similarly, the right outer shell 4 can pivot relative to the right connecting plate 13 about the right outer axis Y1, and the right inner shell 5 can pivot relative to the central main plate 61 about the right inner axis Y2, causing relative movement between the right outer shell 4 and the right inner shell 5. The right inner shell 5 gradually extends out of the right outer shell 4, and the area of ​​the right overlapping region A2 gradually decreases until the right stop post 44 abuts against the right tail end 542 of the right limiting through groove 54. When the left stop post 24 and the right stop post 44 abut against the left tail end 342 and the right tail end 542 respectively, the bearing module 6 is in the unfolded state. At this time, the bearing module 6 is furthest from the fixed module 1, the area of ​​the left overlapping region A1 is the smallest, and the area of ​​the right overlapping region A2 is the smallest.

[0068] To change the carrying module 6 from the unfolded state to the retracted state, simply move the carrying module 6 along the center normal 3001 of the working surface 3000 towards the fixed module 1, causing the left inner shell 3 to gradually retract into the left outer shell 2, and the area of ​​the left overlapping region A1 to gradually increase until the left stop post 24 abuts against the left end 341 of the left limiting through groove 34. Simultaneously, the right inner shell 5 is gradually retracted into the right outer shell 4, and the area of ​​the right overlapping region A2 to gradually increase until the right stop post 44 abuts against the right end 541 of the right limiting through groove 54. Furthermore, in the above process in this embodiment (i.e., the screen normal 2001 is always parallel to or overlaps the center normal 3001), the area of ​​the left overlapping region A1 and the area of ​​the right overlapping region A2 remain the same, but this is not a limitation.

[0069] When the support module 6 is in the deployed state, the support device 1000 forms a three-bar linkage, allowing the user to further rotate the display 2000 horizontally. For example, Figure 8As shown, when the right stop post 44 is fixed in the position abutting the right tail end 542, the display 2000 can be rotated to the left, and the left stop post 24 moves towards the left head end 341 and away from the left tail end 342. The left inner shell 3 partially retracts into the left outer shell 2, and the area of ​​the left overlapping region A1 gradually increases, while the area of ​​the right overlapping region A2 remains unchanged. That is, the area of ​​the left overlapping region A1 is greater than the area of ​​the right overlapping region A2. At this time, the screen normal 2001 of the display 2000 and the center normal 3001 of the working surface 3000 form an angle θ1. The display 2000 is relatively close to the left outer pivot 14 and away from the right outer pivot 15. The size of the angle θ1 is determined by the difference between the area of ​​the left overlapping region A1 and the area of ​​the right overlapping region A2. The greater the difference in area, the larger the angle θ1. Similarly, as Figure 9 As shown, when the left stop post 24 is fixed at the position abutting the left tail end 342, the display 2000 can be rotated to the right, and the right stop post 44 moves towards the right head end 541 and away from the right tail end 542. The right inner shell 5 partially retracts into the right outer shell 4, and the area of ​​the right overlapping region A2 gradually increases, while the area of ​​the left overlapping region A1 remains unchanged. That is, the area of ​​the left overlapping region A1 is smaller than the area of ​​the right overlapping region A2. At this time, the screen normal 2001 of the display 2000 and the center normal 3001 of the working surface 3000 form an angle θ2. The display 2000 is relatively far away from the left outer pivot 14 and close to the right outer pivot 15. Similarly, the size of the angle θ2 is determined by the difference between the areas of the left overlapping region A1 and the right overlapping region A2.

[0070] In summary, by integrating the fixed main board, left connecting plate, right connecting plate, central main board, bearing plate, left outer shell, left inner shell, right outer shell, and right inner shell into a single plate, the thickness of the support device can be effectively reduced, and the display can be placed close to the wall.

Claims

1. A support device for supporting a display on a working surface, the display defining a screen normal and the working surface defining a center normal, characterized in that, The support device comprises: a fixed module fixed to the working surface and comprising at least one left outer pivot portion defining a left outer axis and at least one right outer pivot portion defining a right outer axis; a bearing module for bearing the display and comprising at least one left inner pivot portion defining a left inner axis and at least one right inner pivot portion defining a right inner axis; at least one left outer housing member pivotally connected to the left outer pivot portion and pivotable about the left outer axis relative to the fixed module, and comprising two left track portions corresponding to each other; at least one left inner housing member slidingly arranged in the left track portions and pivotally connected to the left inner pivot portion and pivotable about the left inner axis relative to the bearing module, wherein the left inner housing member and the left outer housing member define a left overlapping area therebetween; at least one right outer housing member pivotally connected to the right outer pivot portion and pivotable about the right outer axis relative to the fixed module, and comprising two right track portions corresponding to each other; and at least one right inner housing member slidingly arranged in the right track portions and pivotally connected to the right inner pivot portion and pivotable about the right inner axis relative to the bearing module, wherein the right inner housing member and the right outer housing member define a right overlapping area therebetween; wherein the bearing module is transformable between an unfolded state and a stored state, in the stored state, the bearing module is closest to the fixed module, and the left overlapping area and the right overlapping area are maximum, the screen normal is parallel to or overlaps the central normal, in the unfolded state, the bearing module is farthest from the fixed module, and the left overlapping area and the right overlapping area are minimum, the screen normal is parallel to or overlaps the central normal.

2. The support device of claim 1, wherein, In the case that the screen normal is parallel to or overlaps the central normal, when the bearing module is transformed from the stored state to the unfolded state, the bearing module gradually moves away from the fixed module, and the left overlapping area and the right overlapping area gradually decrease, when the bearing module is transformed from the unfolded state to the stored state, the bearing module gradually moves closer to the fixed module, and the left overlapping area and the right overlapping area gradually increase.

3. The support device of claim 2, wherein, In the case that the screen normal is parallel to or overlaps the central normal, an area of the left overlapping area is the same as an area of the right overlapping area.

4. The support device of claim 3, wherein By making the area of the left overlapping area different from the area of the right overlapping area, the screen normal can be included at an angle with the central normal of the working surface, and the larger the difference between the area of the left overlapping area and the area of the right overlapping area, the larger the angle.

5. The support device of claim 4, wherein, When the area of the left overlapping area is greater than the area of the right overlapping area, the display is relatively close to the left outer pivot portion and far from the right outer pivot portion, when the area of the left overlapping area is less than the area of the right overlapping area, the display is relatively far from the left outer pivot portion and close to the right outer pivot portion.

6. The support device of claim 5, wherein, The left outer shell further comprises a left stop post, and the left inner shell comprises a left limiting slot, and the left stop post is slidably arranged in the left limiting slot. The right outer shell further comprises a right stop post, and the right inner shell comprises a right limiting slot, and the right stop post is slidably arranged in the right limiting slot. The left limiting slot has a left head end and a left tail end opposite to each other, and the right limiting slot has a right head end and a right tail end opposite to each other. When the carrying module is in the storage state, the left stop post abuts against the left head end, and the right stop post abuts against the right head end. When the carrying module is in the unfolded state, the left stop post abuts against the left tail end, and the right stop post abuts against the right tail end.

7. The support device of claim 6, wherein The left inner shell further comprises two left sliding blocks and two left wing plates spaced from each other, and the left sliding blocks are respectively sleeved on the left wing plates and slidably arranged in the left track portions. The right inner shell further comprises two right sliding blocks and two right wing plates spaced from each other, and the right sliding blocks are respectively sleeved on the right wing plates and slidably arranged in the right track portions. The left outer shell further comprises a left outer main plate and a left outer pivot portion, and the left outer pivot portion is arranged at one end of the left outer main plate and is pivotally connected to the left outer pivot shaft portion. The left track portions are respectively outwardly extended from and bent on opposite sides of the left outer main plate. The left stop post is arranged on the left outer main plate. The right outer shell further comprises a right outer main plate and a right outer pivot portion, and the right outer pivot portion is arranged at one end of the right outer main plate and is pivotally connected to the right outer pivot shaft portion. The right track portions are respectively outwardly extended from and bent on opposite sides of the right outer main plate. The right stop post is arranged on the right outer main plate.

8. The support device of claim 7, wherein, The left inner shell further comprises a left inner main plate and a left inner pivot portion, and the left inner pivot portion is arranged at one end of the left inner main plate and is pivotally connected to the left inner pivot shaft portion. The left wing plates are respectively outwardly extended from opposite sides of the left inner main plate. The left limiting slot is formed through the left inner main plate and is located between the left wing plates. The right inner shell further comprises a right inner main plate and a right inner pivot portion, and the right inner pivot portion is arranged at one end of the right inner main plate and is pivotally connected to the right inner pivot shaft portion. The right wing plates are respectively outwardly extended from opposite sides of the right inner main plate. The right limiting slot is formed through the right inner main plate and is located between the right wing plates. The fixing module further comprises a plurality of outer shaft rods, and the carrying module further comprises a plurality of inner shaft rods. The outer shaft rods are respectively arranged along the left outer axis and pass through the left outer pivot shaft portion and the left outer pivot portion or are arranged along the right outer axis and pass through the right outer pivot shaft portion and the right outer pivot portion. The inner shaft rods are respectively arranged along the left inner axis and pass through the left inner pivot shaft portion and the left inner pivot portion or are arranged along the right inner axis and pass through the right inner pivot shaft portion and the right inner pivot portion.

9. The support device of any one of claims 1 to 8, wherein, The carrying module further comprises a central main plate and two carrying plates. The left inner pivot shaft portion and the right inner pivot shaft portion are respectively arranged on opposite left and right sides of the central main plate. The carrying plates are respectively arranged on opposite upper and lower sides of the central main plate and are used for carrying the display.

10. The support device of claim 9, wherein, The central main plate and the bearing plate are in H shape. The fixing module further comprises two fixing main plates, a left connecting plate and a right connecting plate. The fixing main plates are fixed to the working surface at intervals. The left connecting plate connects the left ends of the fixing main plates respectively. The left outer pivot part is arranged on the left connecting plate. The right connecting plate connects the right ends of the fixing main plates respectively. The right outer pivot part is arranged on the right connecting plate. The materials of the fixing main plates, the left connecting plate, the right connecting plate, the central main plate, the bearing plate, the left outer shell part, the left inner shell part, the right outer shell part and the right inner shell part are metal.

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