Computer auxiliary screen expansion device with multi-angle rotation function

Abstract

The invention discloses a computer auxiliary screen expansion device with a multi-angle rotation function, and relates to the technical field of computer auxiliary screens, the computer auxiliary screen expansion device comprises a main screen and two auxiliary screens, the two auxiliary screens are arranged on the left side and the right side of the rear side of the main screen respectively, and an expansion device is arranged on the rear side of the main screen. The device is provided with a main screen, an auxiliary screen, an extension device, a mounting shell, a door-shaped frame, an extension assembly, a supporting rod, a movable rod, a rotating groove, a rotating shaft, a rotating block, a linkage control assembly, a rotating rod, a motor, a rotating disc, an arc-shaped extrusion groove, a multi-angle rotating device, a rotating sleeve, a rotating column, a positioning assembly, a pin rod, a guide rod, a blind nut, a tension spring, a moving groove, a pressing rod and a limiting plate. And through cooperative use of the adjusting positioning holes and the connecting holes, synchronous and automatic folding and unfolding of the double auxiliary screens are achieved, multi-angle flexible adjustment can be achieved, and the operation convenience and the space utilization rate are improved.

Description

Technical Field

[0001] This invention relates to the field of computer secondary screen technology, specifically to a computer secondary screen extension device with multi-angle rotation function. Background Technology

[0002] With the increasing prevalence of information-based office work and multitasking scenarios, secondary computer screens, as extensions of the main screen, are widely used in fields such as programming development, video editing, and financial data analysis due to their advantages of expanding display space and improving work efficiency. Many users equip themselves with dual secondary screens to further broaden their field of vision, achieve simultaneous presentation of content in multiple windows, and meet the needs of complex work for parallel processing of multi-source information.

[0003] However, existing dual-screen extension devices have many shortcomings. Most devices can only fix the horizontal angle of the secondary screen and cannot rotate and adjust the angle according to the user's habits. Moreover, the storage and unfolding of the secondary screen are mostly done manually, which is not only cumbersome, but also takes up extra desktop space when not in use. This affects the tidiness of the desktop and reduces the overall portability and space utilization of the device. Summary of the Invention

[0004] To address the problems mentioned in the background art, the present invention aims to provide a computer secondary screen extension device with multi-angle rotation function. This device features simultaneous automatic retraction and unfolding of both secondary screens, and flexible multi-angle adjustment, improving operational convenience and space utilization. It addresses or solves many shortcomings of existing dual-secondary screen extension devices. Most devices only allow for a fixed horizontal angle for the secondary screen, unable to rotate and adjust the angle according to user habits. Furthermore, the retraction and unfolding of the secondary screen are often done manually, which is not only cumbersome but also occupies additional desktop space when idle, affecting desktop tidiness and reducing the overall portability and space utilization of the device.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a computer secondary screen extension device with multi-angle rotation function, comprising a main screen and a secondary screen, wherein there are two secondary screens, which are respectively disposed on the left and right sides behind the main screen, and an extension device is disposed on the rear side of the main screen; The expansion device includes a mounting shell, a gate-shaped frame, extension components, a linkage control component, and a multi-angle rotation device. The mounting shell is fitted onto the rear side of the main screen and is fixedly connected to the main screen. The gate-shaped frame is located on the rear side of the mounting shell, and its front sides at both ends are fixedly connected to the upper and lower sides of the rear surface of the mounting shell, respectively. There are two extension components, which are respectively located on the left and right sides of the gate-shaped frame. The linkage control component is located on the front side between the two extension components and inside the front side of the gate-shaped frame. There are two multi-angle rotation devices, which are respectively located at the ends of the two extension components that are far apart from each other.

[0006] In a preferred embodiment of the present invention, the extension assembly includes a support rod, a movable rod, a rotating groove, a rotating shaft, and a rotating block. The two support rods are respectively fixedly connected to the left and right sides of the gate frame. The two movable rods are respectively disposed inside the two support rods, with their ends extending out of the support rods and slidably connected to them. The two rotating grooves are respectively opened at the ends of the two movable rods that are far apart from each other. The two rotating shafts are respectively disposed inside the two rotating grooves, with their upper and lower ends respectively rotatably connected to the upper and lower inner walls of the rotating grooves. The two rotating blocks are respectively sleeved on the surfaces of the two rotating shafts and rotatably connected to them. The multi-angle rotating device is respectively fixedly connected to the front side of the two rotating blocks.

[0007] In a preferred embodiment of the present invention, the front surfaces of the two support rods are respectively provided with movable grooves, and the two movable grooves extend into the interior of the two support rods. The front sides of the two movable rods, which are close to each other, are respectively fixedly connected with pressure rods. The two pressure rods extend out of the support rods through the movable grooves and are slidably connected to the movable grooves.

[0008] In a preferred embodiment of the present invention, the linkage control component includes a rotating rod, a motor, a turntable, and an arc-shaped extrusion groove. The rotating rod is located at the center inside the front side of the portal frame, with its front end rotatably connected to the rear surface of the mounting shell, and its rear end penetrating the portal frame and rotatably connected to it. The motor is fixedly connected to the rear surface of the rotating rod and to the rear surface of the portal frame. The turntable is sleeved on the front surface of the rotating rod and fixedly connected to it. There are two arc-shaped extrusion grooves, which are respectively opened on the left and right sides of the turntable. The two pressure rods are embedded in the two arc-shaped extrusion grooves and are movably connected to them.

[0009] As a preferred embodiment of the present invention, the two front ends of the two pressure rods respectively extend into two arc-shaped extrusion grooves, and both are fixedly connected to a limiting plate.

[0010] As a preferred embodiment of the present invention, the multi-angle rotation device includes a rotating sleeve, a rotating column, and a positioning component. The rotating sleeve is fixedly connected to the front side of the rotating block. The rotating column is disposed inside the rotating sleeve, and its front end extends out of the rotating sleeve and is rotatably connected to the rotating sleeve. The front end of the rotating column is fixedly connected to the rear side of the sub-screen. The positioning component is disposed on the left side of the rear end of the rotating sleeve.

[0011] As a preferred embodiment of the present invention, a plurality of adjustment and positioning holes are evenly provided around the rear surface of the rotating column, and a connecting hole is provided on the left side of the rear surface of the rotating sleeve. The connecting hole corresponds to the adjustment and positioning hole, and the positioning component is disposed inside the connecting hole.

[0012] In a preferred embodiment of the present invention, the positioning component includes a pin, a guide rod, a pull cap, and a tension spring. The pin is disposed inside the connecting hole, with its front end extending into the rotating sleeve and embedded inside the adjusting positioning hole, and movably connected to the adjusting positioning hole. The rear end of the pin extends out of the connecting hole and is slidably connected to the connecting hole. There are two guide rods, which are respectively disposed on the left and right sides of the rear end of the pin, and their front ends are fixedly connected to the rear surface of the rotating sleeve. The pull cap is fixedly connected to the rear end of the pin, and its left and right ends are respectively sleeved on the surfaces of the two guide rods and slidably connected to the guide rods. The tension spring is sleeved on the rear end surface of the pin, and its front and rear ends are fixedly connected to the rear surface of the rotating sleeve and the front surface of the pull cap, respectively.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: 1. This invention improves or solves many shortcomings of existing dual-sub-screen extension devices to a certain extent by setting up a main screen, sub-screen, extension device, mounting shell, door frame, extension component, support rod, movable rod, rotating groove, rotating shaft, rotating block, linkage control component, rotating rod, motor, turntable, arc-shaped extrusion groove, multi-angle rotation device, rotating sleeve, rotating column, positioning component, pin, guide rod, pull cap, tension spring, moving groove, pressure rod, limit plate, adjustment positioning hole and connecting hole. Most devices can only achieve a single horizontal angle fixation of the sub-screen, and cannot rotate and adjust the angle according to the user's habits. Moreover, the storage and unfolding of the sub-screen are mostly independent manual operations, which are not only cumbersome to operate, but also occupy additional desktop space when idle, which affects the cleanliness of the desktop and reduces the overall portability and space utilization of the device.

[0014] 2. This invention enables the extension and retraction of the secondary screen and its initial angle deflection by setting an extension component, providing basic support for adjusting the position of the secondary screen.

[0015] 3. This invention can drive the two extension components to move synchronously by setting up a linkage control component, so as to realize the unified unfolding and storage of the two sub-screens and improve the ease of operation.

[0016] 4. This invention enables precise adjustment and locking of the secondary screen's angle from multiple directions by setting up a multi-angle rotation device, meeting the viewing angle requirements of different usage scenarios. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the computer secondary screen extension device of the present invention from a first perspective. Figure 2 A second-view stereoscopic structural diagram of a computer secondary screen extension device; Figure 3 A schematic diagram of the exploded three-dimensional structure of the expansion device; Figure 4 An exploded three-dimensional structural diagram of the extension component and the linkage control component; Figure 5 A schematic diagram of the exploded three-dimensional structure of a multi-angle rotating device; Figure 6 This is a schematic diagram of the cross-sectional plane structure of the multi-angle rotation device; Figure 7 This is a schematic diagram of the three-dimensional structure of the positioning component.

[0018] In the diagram: 1. Main screen; 2. Sub-screen; 3. Extension device; 31. Mounting shell; 32. Door frame; 4. Extension assembly; 41. Support rod; 42. Movable rod; 43. Rotating groove; 44. Rotating shaft; 45. Rotating block; 5. Linkage control assembly; 51. Rotating rod; 52. Motor; 53. Turntable; 54. Arc-shaped extrusion groove; 6. Multi-angle rotation device; 61. Rotating sleeve; 62. Rotating column; 63. Positioning assembly; 631. Pin; 632. Guide rod; 633. Pull cap; 634. Tension spring; 7. Moving groove; 8. Pressure rod; 9. Limiting plate; 10. Adjustment positioning hole; 11. Connecting hole. Detailed Implementation

[0019] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0021] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0022] Secondly, the present invention is described in detail with reference to the schematic diagrams. When detailing the embodiments of the present invention, for ease of explanation, the cross-sectional views illustrating the device structure may be partially enlarged, not according to the usual scale. Furthermore, the schematic diagrams are merely examples and should not limit the scope of protection of the present invention. In addition, actual fabrication should include the three-dimensional spatial dimensions of length, width, and depth. Example 1

[0023] Reference Figure 1-7 The first embodiment of the present invention provides a computer secondary screen extension device with multi-angle rotation function, including a main screen 1 and a secondary screen 2. There are two secondary screens 2, which are respectively arranged on the left and right sides behind the main screen 1. An extension device 3 is arranged on the rear side of the main screen 1. The extension device 3 includes a mounting shell 31, a gate-shaped frame 32, extension components 4, a linkage control component 5, and a multi-angle rotation device 6. The mounting shell 31 is fitted onto the rear side of the main screen 1 and is fixedly connected to the main screen 1. The gate-shaped frame 32 is located on the rear side of the mounting shell 31, and the front sides of its upper and lower ends are fixedly connected to the upper and lower sides of the rear surface of the mounting shell 31, respectively. There are two extension components 4, which are respectively located on the left and right sides of the gate-shaped frame 32. The linkage control component 5 is located on the front side between the two extension components 4 and is located inside the front side of the gate-shaped frame 32. There are two multi-angle rotation devices 6, which are respectively located at the ends of the two extension components 4 that are far apart from each other.

[0024] Specifically, the device can automatically extend and retract the two secondary screens simultaneously, and can flexibly adjust the secondary screens at multiple angles, effectively saving desktop space and improving usability.

[0025] Furthermore, the linkage control component 5 drives the two extension components 4 to simultaneously complete the unfolding and retraction of the sub-screen 2, and the multi-angle rotation device 6 realizes the multi-directional angle adjustment of the sub-screen 2. All components work together to complete the expansion and angle adaptation of the sub-screen 2. Example 2

[0026] In the second embodiment of the present invention, the extension component 4 includes a support rod 41, a movable rod 42, a rotating groove 43, a rotating shaft 44, and a rotating block 45. The two support rods 41 are fixedly connected to the left and right sides of the door frame 32, respectively. The two movable rods 42 are respectively disposed inside the two support rods 41, and the ends of the movable rods 42 that are far apart from each other extend out of the two support rods 41 and are slidably connected to the support rods 41. The two rotating grooves 43 are respectively opened at the ends of the movable rods 42 that are far apart from each other. The two rotating shafts 44 are respectively disposed inside the two rotating grooves 43, and the upper and lower ends of the shafts 44 are rotatably connected to the upper and lower inner walls of the rotating grooves 43, respectively. The two rotating blocks 45 are respectively sleeved on the surfaces of the two rotating shafts 44 and are rotatably connected to the rotating shafts 44. The multi-angle rotating device 6 is fixedly connected to the front side of the two rotating blocks 45. The front surfaces of the two support rods 41 are respectively provided with moving grooves 7, and the two moving grooves 7 extend into the interior of the two support rods 41. The front sides of the two movable rods 42, which are close to each other, are respectively fixedly connected with pressure rods 8. The two pressure rods 8 extend out of the support rods 41 through the moving grooves 7 and are slidably connected with the moving grooves 7.

[0027] Specifically, by setting the extension component 4, the secondary screen 2 can be extended and retracted and its initial angle can be deflected, providing basic support for the position adjustment of the secondary screen 2.

[0028] Furthermore, the pressure rod 8 is driven by an external force to slide the movable rod 42 within the support rod 41 to achieve the extension and retraction of the sub-screen 2. At the same time, the rotating block 45 can rotate around the rotating shaft 44, driving the sub-screen 2 to complete the initial angle adjustment. Example 3

[0029] In the third embodiment of the present invention, the linkage control component 5 includes a rotating rod 51, a motor 52, a turntable 53, and an arc-shaped extrusion groove 54. The rotating rod 51 is located at the center inside the front side of the portal frame 32, and its front end is rotatably connected to the rear surface of the mounting shell 31. Its rear end passes through the portal frame 32 and is rotatably connected to the portal frame 32. The motor 52 is fixedly connected to the rear surface of the rotating rod 51 and is fixedly connected to the rear surface of the portal frame 32. The turntable 53 is sleeved on the front surface of the rotating rod 51 and is fixedly connected to the rotating rod 51. There are two arc-shaped extrusion grooves 54, which are respectively opened on the left and right sides of the turntable 53. Two pressure rods 8 are embedded in the two arc-shaped extrusion grooves 54 and are movably connected to the arc-shaped extrusion grooves 54. Two arc-shaped extrusion grooves 54 extend from the front ends of the two pressure rods 8, and are fixedly connected to limit plates 9.

[0030] Specifically, by setting up the linkage control component 5, the dual extension components 4 can be driven to move synchronously, so as to realize the unified unfolding and storage of the dual sub-screens 2 and improve the ease of operation.

[0031] Furthermore, the motor 52 drives the rotating rod 51 and the turntable 53 to rotate, and the arc-shaped extrusion groove 54 on the turntable 53 extrudes the pressure rod 8, thereby driving the movable rods 42 of the two extension components 4 to complete the extension and retraction actions simultaneously. Example 4

[0032] In the fourth embodiment of the present invention, the multi-angle rotation device 6 includes a rotating sleeve 61, a rotating column 62 and a positioning component 63. The rotating sleeve 61 is fixedly connected to the front side of the rotating block 45. The rotating column 62 is disposed inside the rotating sleeve 61 and extends out of the rotating sleeve 61 and is rotatably connected to the rotating sleeve 61. The front end of the rotating column 62 is fixedly connected to the rear side of the sub-screen 2. The positioning component 63 is disposed on the left side of the rear end of the rotating sleeve 61. A number of adjustment and positioning holes 10 are evenly opened around the rear surface of the rotating column 62, and a connecting hole 11 is opened on the left side of the rear surface of the rotating sleeve 61. The connecting hole 11 corresponds to the adjustment and positioning holes 10, and the positioning component 63 is set inside the connecting hole 11. The positioning assembly 63 includes a pin 631, a guide rod 632, a pull cap 633, and a tension spring 634. The pin 631 is located inside the connecting hole 11, with its front end extending into the rotating sleeve 61 and embedded in the adjusting positioning hole 10, and is movably connected to the adjusting positioning hole 10. The rear end of the pin 631 extends out of the connecting hole 11 and is slidably connected to the connecting hole 11. There are two guide rods 632, which are respectively located on the left and right sides of the rear end of the pin 631, and their front ends are fixedly connected to the rear surface of the rotating sleeve 61. The pull cap 633 is fixedly connected to the rear end of the pin 631, and its left and right ends are respectively sleeved on the surfaces of the two guide rods 632 and are slidably connected to the guide rods 632. The tension spring 634 is sleeved on the rear end surface of the pin 631, and its front and rear ends are fixedly connected to the rear surface of the rotating sleeve 61 and the front surface of the pull cap 633, respectively.

[0033] Specifically, by setting up a multi-angle rotation device 6, the secondary screen 2 can be precisely adjusted and locked in multiple directions to meet the viewing angle requirements of different usage scenarios.

[0034] Furthermore, pulling the cap 633 causes the pin 631 to disengage from the adjustment positioning hole 10, and the rotating column 62 can rotate within the rotating sleeve 61 to adjust the angle. After releasing the cap 633, the tension spring 634 drives the pin 631 to reset and embed into the corresponding positioning hole, thus completing the angle locking.

[0035] Working principle: When using the computer secondary screen 2 extension device 3, during the unfolding process, the control motor 52 starts and drives the rotating rod 51 to rotate. The rotating rod 51 then rotates synchronously with the front turntable 53. When the turntable 53 rotates, the arc-shaped extrusion grooves 54 on both sides will exert extrusion force on the pressure rods 8 embedded in the grooves, pushing the two pressure rods 8 to slide outward along the moving grooves 7 on the surface of the support rod 41, thereby pulling the movable rod 42 to extend outward from the inside of the support rod 41. After the movable rod 42 is extended, the angle of the sub-screen 2 can be deflected by the cooperation of the rotating shaft 44 and the rotating block 45 in the rotating groove 43. If the display angle of the sub-screen 2 needs to be further adjusted, the pull cap 633 can be pulled to move the pin 631 backward and disengage it from the adjustment positioning hole 10 on the rotating column 62. At this time, the rotating column 62 can rotate freely inside the rotating sleeve 61. After adjusting to the appropriate angle, the pull cap 633 can be released. The rebound force of the tension spring 634 will push the pin 631 to re-embed into the adjustment positioning hole 10 at the corresponding position, thus completing the angle locking and realizing the flexible adjustment of the sub-screen 2 at multiple angles.

[0036] When not in use and stored, the motor 52 rotates in the opposite direction, causing the turntable 53 to rotate in the opposite direction. The arc-shaped extrusion groove 54 applies extrusion force to the pressure rod 8 in the opposite direction, thereby causing the movable rod 42 to retract into the support rod 41. The two secondary screens 2 are then stored at the left and right ends behind the main screen 1, saving desktop space.

[0037] In summary, by using the main screen 1, secondary screen 2, extension device 3, mounting shell 31, door frame 32, extension component 4, support rod 41, movable rod 42, rotating groove 43, rotating shaft 44, rotating block 45, linkage control component 5, rotating rod 51, motor 52, turntable 53, arc-shaped extrusion groove 54, multi-angle rotation device 6, rotating sleeve 61, rotating column 62, positioning component 63, pin 631, guide rod 632, pull cap 633, tension spring 634, moving groove 7, pressure rod 8, limit plate 9, adjustment positioning hole 10, and connecting hole 11 in coordination, the dual secondary screens can be synchronously and automatically retracted and unfolded, and can be flexibly adjusted at multiple angles, improving the ease of operation and space utilization.

[0038] The main screen 1, secondary screen 2, motor 52, and tension spring 634 used in this application can be additionally equipped with protective measures of common knowledge in the field under different usage environments, including but not limited to the following methods, such as protective covers for equipment protection, dustproof nets for equipment dust prevention, and sealing components or waterproof coatings for equipment waterproofing, which are commonly used by those skilled in the art.

[0039] It should be noted that the main screen 1, the secondary screen 2, the motor 52 and the tension spring 634 are existing devices or equipment, or devices or equipment that can be implemented by existing technology. The power supply, connection method, usage method, power source, fixing method, installation method, control method and other methods of the device, as well as the materials of each accessory and the selection of various parameters are common knowledge to those skilled in the art, and therefore will not be described in detail in this application document.

[0040] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0041] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0042] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine task in design, manufacturing, and production without requiring extensive experimentation.

[0043] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A computer secondary screen extension device with multi-angle rotation function, comprising a main screen (1) and a secondary screen (2), wherein there are two secondary screens (2), which are respectively disposed on the left and right sides behind the main screen (1), characterized in that: An expansion device (3) is provided on the rear side of the main screen (1); The extension device (3) includes a mounting shell (31), a gate frame (32), an extension component (4), a linkage control component (5), and a multi-angle rotation device (6). The mounting shell (31) is fitted onto the rear side of the main screen (1) and is fixedly connected to the main screen (1). The gate frame (32) is located on the rear side of the mounting shell (31), and the front sides of the upper and lower ends are fixedly connected to the upper and lower sides of the rear surface of the mounting shell (31), respectively. There are two extension components (4), which are respectively located on the left and right sides of the gate frame (32). The linkage control component (5) is located on the front side between the two extension components (4) and is located inside the front side of the gate frame (32). There are two multi-angle rotation devices (6), which are respectively located at the ends of the two extension components (4) that are far apart from each other.

2. The computer secondary screen extension device with multi-angle rotation function according to claim 1, characterized in that: The extension component (4) includes a support rod (41), a movable rod (42), a rotating groove (43), a rotating shaft (44), and a rotating block (45). The two support rods (41) are fixedly connected to the left and right sides of the door frame (32). The two movable rods (42) are respectively set inside the two support rods (41), and the two support rods (41) extend from their respective ends and are slidably connected to the support rods (41). The two rotating grooves (43) are respectively opened at the ends of the two movable rods (42) that are far apart from each other. The two rotating shafts (44) are respectively set inside the two rotating grooves (43), and their upper and lower ends are rotatably connected to the upper and lower inner walls of the rotating grooves (43). The two rotating blocks (45) are respectively sleeved on the surfaces of the two rotating shafts (44) and are rotatably connected to the rotating shafts (44). The multi-angle rotating device (6) is fixedly connected to the front side of the two rotating blocks (45).

3. A computer secondary screen extension device with multi-angle rotation function according to claim 2, characterized in that: The front surfaces of the two support rods (41) are respectively provided with moving grooves (7), and the two moving grooves (7) penetrate into the interior of the two support rods (41). The front sides of the two movable rods (42) that are close to each other are respectively fixedly connected with pressure rods (8). The two pressure rods (8) extend out of the support rods (41) through the moving grooves (7) and are slidably connected with the moving grooves (7).

4. A computer secondary screen extension device with multi-angle rotation function according to claim 3, characterized in that: The linkage control component (5) includes a rotating rod (51), a motor (52), a turntable (53), and an arc-shaped extrusion groove (54). The rotating rod (51) is located at the center inside the front side of the portal frame (32), and its front end is rotatably connected to the rear surface of the mounting shell (31). Its rear end passes through the portal frame (32) and is rotatably connected to the portal frame (32). The motor (52) is fixedly connected to the rear end surface of the rotating rod (51) and is fixedly connected to the rear surface of the portal frame (32). The turntable (53) is sleeved on the front end surface of the rotating rod (51) and is fixedly connected to the rotating rod (51). There are two arc-shaped extrusion grooves (54), which are respectively opened on the left and right sides of the turntable (53). Two pressure rods (8) are embedded in the two arc-shaped extrusion grooves (54) and are movably connected to the arc-shaped extrusion grooves (54).

5. A computer secondary screen extension device with multi-angle rotation function according to claim 4, characterized in that: The front ends of the two pressure rods (8) extend into two arc-shaped extrusion grooves (54), and both are fixedly connected to a limiting plate (9).

6. A computer secondary screen extension device with multi-angle rotation function according to claim 2, characterized in that: The multi-angle rotating device (6) includes a rotating sleeve (61), a rotating column (62), and a positioning component (63). The rotating sleeve (61) is fixedly connected to the front side of the rotating block (45). The rotating column (62) is disposed inside the rotating sleeve (61) and extends out of the rotating sleeve (61) and is rotatably connected to the rotating sleeve (61). The front end of the rotating column (62) is fixedly connected to the rear side of the sub-screen (2). The positioning component (63) is disposed on the left side of the rear end of the rotating sleeve (61).

7. A computer secondary screen extension device with multi-angle rotation function according to claim 6, characterized in that: A plurality of adjustment and positioning holes (10) are evenly provided around the rear surface of the rotating column (62), and a connecting hole (11) is provided on the left side of the rear surface of the rotating sleeve (61). The connecting hole (11) corresponds to the adjustment and positioning hole (10), and the positioning component (63) is disposed inside the connecting hole (11).

8. A computer secondary screen extension device with multi-angle rotation function according to claim 7, characterized in that: The positioning component (63) includes a pin (631), a guide rod (632), a pull cap (633), and a tension spring (634). The pin (631) is disposed inside the connecting hole (11), with its front end extending into the rotating sleeve (61) and embedded inside the adjusting positioning hole (10), and is movably connected to the adjusting positioning hole (10). The rear end of the pin (631) extends out of the connecting hole (11) and is slidably connected to the connecting hole (11). There are two guide rods (632). The pin (631) is located on the left and right sides of the rear end of the pin (631), and its front end is fixedly connected to the rear surface of the rotating sleeve (61). The pull cap (633) is fixedly connected to the rear end of the pin (631), and its left and right ends are respectively sleeved on the surfaces of the two guide rods (632) and slidably connected to the guide rods (632). The tension spring (634) is sleeved on the rear end surface of the pin (631), and its front and rear ends are respectively fixedly connected to the rear surface of the rotating sleeve (61) and the front surface of the pull cap (633).

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