VR projection device convenient for multi-angle adjustment

Abstract

The invention belongs to the field of VR projection equipment, and particularly relates to a VR projection device convenient for multi-angle adjustment, the VR projection device comprises a mounting base and a VR projector, the VR projector is located below the mounting base, two vertical rods are fixedly mounted at the bottom of the mounting base, transverse plates are fixedly mounted at the bottom ends of the vertical rods, a same lower clamping base is fixedly mounted between the two transverse plates, and the same lower clamping base is fixedly mounted between the two transverse plates. The vertical rods are slidably sleeved with sliding plates, the same upper clamping base is fixedly installed between the two sliding plates, an upper hemisphere groove is formed in the bottom of the upper clamping base, and a lower hemisphere groove is formed in the top of the lower clamping base. The device is reasonable in design, the VR projector is connected with the rotating ball body, the rotating ball body can rotate in multiple directions in the ball groove, so that the purpose of multi-angle adjustment of the VR projector can be achieved, meanwhile, the rotating ball body can be stably clamped and fixed through cooperation of the upper clamping seat, the lower clamping seat and multiple arc-shaped pressing plates, and the VR projector can be conveniently adjusted. And the stability of the VR projector is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of VR projection equipment, and in particular to a VR projection device that is easy to adjust at multiple angles. Background Art

[0002] With the continuous development of virtual reality technology, VR projection devices have been widely used in entertainment, education, training and other fields. Existing VR projection devices often have the problem of inconvenient angle adjustment during use. Users may need to adjust the projection angle according to different usage scenarios, their own postures and viewing needs to obtain the best visual experience.

[0003] However, traditional VR projection devices have many shortcomings in angle adjustment, such as limited adjustment angles, complicated adjustment process, poor stability, etc., which cannot meet the user's needs for free adjustment of multiple angles and stable fixation. Therefore, we propose a VR projection device that is easy to adjust at multiple angles to solve the above problems. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a VR projection device that is easy to adjust at multiple angles.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A VR projection device that is easy to adjust at multiple angles, comprising a mounting seat and a VR projector, wherein the VR projector is located below the mounting seat, two vertical rods are fixedly mounted on the bottom of the mounting seat, a horizontal plate is fixedly mounted on the bottom end of the vertical rod, a same lower clamping seat is fixedly mounted between the two horizontal plates, a sliding plate is slidably sleeved on the vertical rod, and a same upper clamping seat is fixedly mounted between the two sliding plates; An upper hemispherical groove is provided at the bottom of the upper clamping seat, a lower hemispherical groove is provided at the top of the lower clamping seat, a guide hole is provided at the bottom of the lower clamping seat, the guide hole is connected to the lower hemispherical groove, a rotating sphere for adjusting the angle of the VR projector is movably installed between the upper hemispherical groove and the lower hemispherical groove, a fixing plate is fixedly installed on the top of the VR projector, a connecting mechanism is installed at the bottom of the rotating sphere, and the connecting mechanism is connected to the fixing plate; Two driving seats are slidably mounted at the bottom of the mounting seat, one side of the driving seat is hinged with a hinged rod, and the bottom end of the hinged rod is hinged on the top of the upper clamping seat, a driving mechanism is provided on the fixed rod, the driving mechanism is connected to the corresponding driving seat, and a synchronization mechanism is provided between the two driving seats; A plurality of grooves are provided on the inner wall of the upper hemispherical groove, a rectangular groove is provided on the inner wall of one side of the groove, a trapezoidal seat is slidably installed in the rectangular groove, and an arc-shaped pressing plate for pressing and fixing the rotating ball is fixedly installed on one side of the trapezoidal seat.

[0006] Preferably, the synchronization mechanism includes a sliding groove, a sliding seat and a fixed rod, the sliding groove is opened on the bottom of the mounting seat, the sliding seat is fixedly mounted on the top of the driving seat, the sliding seat is slidably connected to the corresponding sliding groove, and the same fixed rod is fixedly mounted between the two sliding seats.

[0007] Preferably, the driving mechanism includes a threaded hole 1, a driving screw and a rotating plate, the threaded hole 1 is opened on the vertical rod, the driving screw is installed on the internal thread of the threaded hole 1, one end of the driving screw is rotatably installed on the corresponding driving seat, and the other end of the driving screw is fixedly installed with the rotating plate.

[0008] Preferably, a rotation groove is provided on the driving seat, an annular groove is provided on the inner wall of the rotation groove, an annular seat is fixedly mounted on the driving screw, and the annular seat is rotationally connected to the annular groove.

[0009] Preferably, a plug hole is provided on the inner wall of the bottom of the rectangular groove, the plug hole is connected with the corresponding rectangular groove, and an extrusion rod is fixedly installed on the top of the lower clamping seat, the extrusion rod passes through the plug hole and is adapted to the corresponding trapezoidal seat.

[0010] Preferably, a spring groove is opened on the top inner wall of the rectangular groove, a spring seat is fixedly installed on the top of the trapezoidal seat, the spring seat is slidably connected to the corresponding spring groove, a return spring is fixedly installed on one side of the spring seat, and one end of the return spring is fixedly installed on the inner wall of the spring groove.

[0011] Preferably, the connecting mechanism includes a connecting rod, a connecting sleeve and a connecting plate, the connecting rod is fixedly mounted on the bottom of the rotating sphere, the connecting sleeve sliding sleeve is arranged on the outer side of the connecting rod, and the bottom of the connecting sleeve is fixedly connected to the fixed plate through a disassembly and assembly mechanism.

[0012] Preferably, a plurality of fixing grooves are provided on the outer side of the connecting rod, and threaded holes 2 are provided on the inner walls on both sides of the connecting sleeve. Fixing bolts are installed in the inner threads of the threaded holes 2, and the fixing bolts are matched with the corresponding fixing grooves.

[0013] Preferably, the disassembly and assembly structure includes a mounting hole, a fixing screw and a fixing nut, the mounting hole is opened on the top of the connecting plate, the fixing screw is fixedly installed on the top of the fixing plate, the fixing screw passes through the corresponding mounting hole and is threadedly installed with a fixing nut.

[0014] Preferably, the front and rear inner walls of the connecting sleeve are provided with limiting grooves, the front and rear sides of the connecting rod are fixedly installed with limiting seats, and the limiting seats are slidably connected to the corresponding limiting grooves.

[0015] Beneficial effects of the present invention: 1. Install the fixing plate of the VR projector on the connecting plate so that the fixing screw can pass through the corresponding mounting hole, and install the fixing nut on the fixing screw to achieve the purpose of installing the VR projector; 2. The fixing bolt, the second threaded hole and the fixing groove cooperate to fix and release the connecting sleeve, and the connecting sleeve can drive the VR projector to move in the vertical direction, so as to adjust the distance between the VR projector and the mounting seat as needed; 3. When the upper clamping seat is separated from the lower clamping seat, the clamping and fixing of the rotating sphere can be released. At this time, by rotating the VR projector, the VR projector drives the rotating sphere to rotate in the ball groove through the connecting mechanism, so that the VR projector can be rotated in any direction, thereby achieving the purpose of multi-angle adjustment of the VR projector; 4. When the VR projector is adjusted to the specified angle, the driving screw can drive the corresponding driving seat to move through the action of the rotating plate, the driving screw and the threaded hole 1, and the driving seat can drive the upper clamping seat to move in the direction of the lower clamping seat through the hinge rod. The cooperation of the upper clamping seat and the lower clamping seat can clamp the rotating sphere to achieve preliminary fixation of the rotating sphere; 5. When the upper clamping seat moves downward and contacts the lower clamping seat, the extrusion rod can be inserted into the rectangular groove and squeeze the trapezoidal seat. The trapezoidal seat can drive the arc-shaped clamping plate to squeeze in the direction of the rotating sphere. The rotating sphere can be clamped and fixed again through multiple arc-shaped clamping plates, thereby increasing the stability of the VR projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic diagram of the three-dimensional structure of a VR projection device that is easy to adjust at multiple angles proposed by the present invention; Figure 2 This is a schematic diagram of the upward-looking structure of a VR projection device that is easy to adjust at multiple angles, as proposed by the present invention; Figure 3 This is a schematic diagram of the exploded structure of a lower clamping seat, an upper clamping seat and a rotating sphere of a VR projection device that is convenient for multi-angle adjustment proposed by the present invention; Figure 4 A schematic diagram of a sectional three-dimensional structure of a VR projection device that is convenient for multi-angle adjustment proposed by the present invention; Figure 5 This is a schematic diagram of the structure of part A of a VR projection device that is easy to adjust at multiple angles proposed by the present invention; Figure 6 This is a schematic diagram of the structure of part B of a VR projection device that is easy to adjust at multiple angles proposed by the present invention; Figure 7This is a schematic structural diagram of part C of a VR projection device that is easy to adjust at multiple angles, as proposed by the present invention.

[0017] In the figure: 1, mounting seat; 2, VR projector; 301, vertical rod; 302, horizontal plate; 303, lower clamping seat; 304, upper clamping seat; 305, sliding plate; 401, upper hemispherical groove; 402, lower hemispherical groove; 403, guide hole; 404, rotating sphere; 5, fixing plate; 6, connecting mechanism; 601, connecting rod; 602, connecting sleeve; 603, connecting plate; 701, driving seat; 702, hinged rod; 703, sliding groove; 704, sliding seat; 705 , fixing rod; 801, threaded hole one; 802, driving screw; 803, rotating plate; 901, groove; 902, rectangular groove; 903, trapezoidal seat; 904, arc-shaped clamping plate; 905, extrusion rod; 906, jack; 1001, spring groove; 1002, spring seat; 1003, reset spring; 1101, fixing groove; 1102, threaded hole two; 1103, fixing bolt; 1201, mounting hole; 1202, fixing screw; 1203, fixing nut. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be clearly and completely described below in conjunction with specific embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] When a component is referred to as being "disposed on" another component, it can be directly on the other component or there can also be an intermediate component. "Disposed" indicates a way of existence, which can be a connection method such as connection, installation, fixed connection, active connection, etc. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there can be an intermediate component at the same time.

[0020] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0021] Reference Figure 1-7A VR projection device that is easy to adjust at multiple angles comprises a mounting seat 1 and a VR projector 2, wherein the VR projector 2 is located below the mounting seat 1, two vertical rods 301 are fixedly installed at the bottom of the mounting seat 1, a horizontal plate 302 is fixedly installed at the bottom end of the vertical rod 301, a same lower clamping seat 303 is fixedly installed between the two horizontal plates 302, a sliding plate 305 is slidably sleeved on the vertical rod 301, a same upper clamping seat 304 is fixedly installed between the two sliding plates 305, an upper hemispherical groove 401 is provided at the bottom of the upper clamping seat 304, a lower hemispherical groove 402 is provided at the top of the lower clamping seat 303, a guide hole 403 is provided at the bottom of the lower clamping seat 303, the guide hole 403 is connected to the lower hemispherical groove 402, and a same angle adjustment mechanism for the VR projector 2 is movably installed between the upper hemispherical groove 401 and the lower hemispherical groove 402. The rotating sphere 404, the top of the VR projector 2 is fixedly installed with a fixing plate 5, the bottom of the rotating sphere 404 is installed with a connecting mechanism 6, the connecting mechanism 6 is connected to the fixing plate 5, and two driving seats 701 are slidably installed at the bottom of the mounting seat 1, one side of the driving seat 701 is hinged with a hinge rod 702, and the bottom end of the hinge rod 702 is hinged on the top of the upper clamping seat 304, a driving mechanism is provided on the fixing rod 705, the driving mechanism is connected with the corresponding driving seat 701, and a synchronization mechanism is provided between the two driving seats 701, a plurality of grooves 901 are opened on the inner wall of the upper hemisphere groove 401, a rectangular groove 902 is opened on the inner wall of one side of the groove 901, a trapezoidal seat 903 is slidably installed in the rectangular groove 902, and an arc-shaped pressing plate 904 for pressing and fixing the rotating sphere 404 is fixedly installed on one side of the trapezoidal seat 903.

[0022] In this embodiment, the synchronization mechanism includes a sliding groove 703, a sliding seat 704 and a fixed rod 705. The sliding groove 703 is opened on the bottom of the mounting seat 1, and the sliding seat 704 is fixedly installed on the top of the driving seat 701. The sliding seat 704 is slidably connected to the corresponding sliding groove 703. The same fixed rod 705 is fixedly installed between the two sliding seats 704. By providing the fixed rod 705, the two sliding seats 704 can be fixedly connected, so that when one sliding seat 704 moves, the two sliding seats 704 can be moved synchronously through the fixed rod 705.

[0023] In this embodiment, the driving mechanism includes a threaded hole 801, a driving screw 802 and a rotating plate 803. The threaded hole 801 is provided on the vertical rod 301. The driving screw 802 is installed on the inner thread of the threaded hole 801. One end of the driving screw 802 is rotatably installed on the corresponding driving seat 701, and the other end of the driving screw 802 is fixedly installed with a rotating plate 803. By providing the driving screw 802, the movement of the driving screw 802 can drive the corresponding driving seat 701 to move. A rotating groove is provided on the driving seat 701, and an annular groove is provided on the inner wall of the rotating groove. An annular seat is fixedly installed on the driving screw 802, and the annular seat is rotatably connected to the annular groove. By providing the annular seat and the annular groove, the driving screw 802 can be rotatably installed on the driving seat 701.

[0024] In this embodiment, a plug hole 906 is provided on the bottom inner wall of the rectangular groove 902, and the plug hole 906 is connected to the corresponding rectangular groove 902. A squeezing rod 905 is fixedly installed on the top of the lower clamping seat 303, and the squeezing rod 905 passes through the plug hole 906 and is adapted to the corresponding trapezoidal seat 903. When the upper clamping seat 304 moves downward and contacts the lower clamping seat 303, the squeezing rod 905 can be inserted into the rectangular groove 902 and squeeze the trapezoidal seat 903, and the trapezoidal seat 903 can drive the arc-shaped pressing plate 904 to squeeze in the direction of the rotating ball 404. Through multiple arc-shaped pressing plates 9 04 can compress and fix the rotating sphere 404 again, a spring groove 1001 is opened on the top inner wall of the rectangular groove 902, a spring seat 1002 is fixedly installed on the top of the trapezoidal seat 903, the spring seat 1002 is slidably connected with the corresponding spring groove 1001, a return spring 1003 is fixedly installed on one side of the spring seat 1002, one end of the return spring 1003 is fixedly installed on the inner wall of the spring groove 1001, by providing the return spring 1003, when the extrusion rod 905 does not squeeze the trapezoidal seat 903, the return spring 1003 can push the trapezoidal seat 903 to reset.

[0025] In this embodiment, the connecting mechanism 6 includes a connecting rod 601, a connecting sleeve 602 and a connecting plate 603. The connecting rod 601 is fixedly installed on the bottom of the rotating sphere 404. The connecting sleeve 602 is slidably sleeved on the outer side of the connecting rod 601. The bottom of the connecting sleeve 602 is fixedly connected to the fixing plate 5 through a disassembly mechanism. A plurality of fixing grooves 1101 are provided on the outer side of the connecting rod 601. The inner walls of both sides of the connecting sleeve 602 are provided with threaded holes 1102. The inner threads of the threaded holes 1102 are provided with fixing bolts 1103, and the fixing bolts 1103 are fixedly installed. The bolt 1103 is matched with the corresponding fixing groove 1101. By rotating the fixing bolt 1103, under the action of the second threaded hole 1102, the fixing bolt 1103 can be rotated and moved. The movement of the fixing bolt 1103 can be inserted into or disengaged from the corresponding fixing groove 1101, thereby achieving the fixing and releasing of the connecting sleeve 602. The connecting sleeve 602 can drive the VR projector 2 to move in the vertical direction, thereby adjusting the distance between the VR projector 2 and the mounting base 1 as needed.

[0026] In this embodiment, the disassembly and assembly structure includes an installation hole 1201, a fixing screw 1202 and a fixing nut 1203. The installation hole 1201 is opened on the top of the connecting plate 603, and the fixing screw 1202 is fixedly installed on the top of the fixing plate 5. The fixing screw 1202 passes through the corresponding installation hole 1201 and is threadedly installed with a fixing nut 1203. Limiting grooves are opened on the front and rear inner walls of the connecting sleeve 602. Limiting seats are fixedly installed on the front and rear sides of the connecting rod 601, and the limiting seats are slidably connected to the corresponding limiting grooves. The fixing screw 1202 can pass through the corresponding installation hole 1201, and the fixing nut 1203 is threadedly installed on the fixing screw 1202, so as to achieve the purpose of installing the VR projector 2.

[0027] In the present invention, the fixing plate 5 of the VR projector 2 is installed on the connecting plate 603, so that the fixing screw 1202 can pass through the corresponding mounting hole 1201, and the fixing nut 1203 is threadedly installed on the fixing screw 1202, so as to achieve the purpose of installing the VR projector 2. By rotating the fixing bolt 1103, under the action of the second threaded hole 1102, the fixing bolt 1103 can be rotated and moved at the same time, and the movement of the fixing bolt 1103 can be inserted into or separated from the corresponding fixing groove 1101, so as to achieve the fixing and releasing of the connecting sleeve 602. The connecting sleeve 602 can drive the VR projector 2 to move in the vertical direction, so as to achieve the purpose of adjusting the distance between the VR projector 2 and the mounting seat 1 as needed; When the upper clamping seat 304 is separated from the lower clamping seat 303, the clamping fixation of the rotating ball 404 can be released. At this time, by rotating the VR projector 2, the VR projector 2 drives the rotating ball 404 to rotate in the ball groove through the connecting mechanism 6, so that the VR projector 2 can be rotated in any direction, thereby achieving the purpose of multi-angle adjustment of the VR projector 2. When the VR projector 2 is adjusted to a specified angle, by rotating the rotating plate 803 and the driving screw 802, under the action of the threaded hole 801, the driving screw 802 can be rotated and moved at the same time, and the driving screw 802 can drive the corresponding driving seat 701 to move, and under the action of the fixing rod 705, the two driving seats 701 are connected. The moving seat 701 moves synchronously, and the driving seat 701 can drive the upper clamping seat 304 to move in the direction of the lower clamping seat 303 through the hinge rod 702. The cooperation between the upper clamping seat 304 and the lower clamping seat 303 can clamp the rotating sphere 404 to achieve preliminary fixation of the rotating sphere 404. When the upper clamping seat 304 moves downward and contacts the lower clamping seat 303, the extrusion rod 905 can be inserted into the rectangular groove 902 and squeeze the trapezoidal seat 903. The trapezoidal seat 903 can drive the arc-shaped clamping plate 904 to squeeze in the direction of the rotating sphere 404. The rotating sphere 404 can be clamped and fixed again through multiple arc-shaped clamping plates 904, thereby increasing the stability of the VR projector 2.

[0028] The above is a detailed introduction to a VR projection device that is easy to adjust at multiple angles provided by the present invention. Specific embodiments are used herein to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A VR projection device that is easy to adjust at multiple angles, characterized in that: The invention comprises a mounting seat (1) and a VR projector (2), wherein the VR projector (2) is located below the mounting seat (1), two vertical rods (301) are fixedly mounted on the bottom of the mounting seat (1), a horizontal plate (302) is fixedly mounted on the bottom end of the vertical rod (301), a same lower clamping seat (303) is fixedly mounted between the two horizontal plates (302), a sliding plate (305) is slidably sleeved on the vertical rod (301), and a same upper clamping seat (304) is fixedly mounted between the two sliding plates (305); An upper hemispherical groove (401) is provided at the bottom of the upper clamping seat (304), a lower hemispherical groove (402) is provided at the top of the lower clamping seat (303), a guide hole (403) is provided at the bottom of the lower clamping seat (303), the guide hole (403) is connected to the lower hemispherical groove (402), a rotating sphere (404) for adjusting the angle of the VR projector (2) is movably installed between the upper hemispherical groove (401) and the lower hemispherical groove (402), a fixing plate (5) is fixedly installed at the top of the VR projector (2), a connecting mechanism (6) is installed at the bottom of the rotating sphere (404), and the connecting mechanism (6) is connected to the fixing plate (5); Two driving seats (701) are slidably mounted on the bottom of the mounting seat (1); a hinged rod (702) is hinged on one side of the driving seat (701); and the bottom end of the hinged rod (702) is hinged on the top of the upper clamping seat (304); a driving mechanism is provided on the fixing rod (705); the driving mechanism is connected to the corresponding driving seat (701); and a synchronization mechanism is provided between the two driving seats (701); A plurality of grooves (901) are provided on the inner wall of the upper hemispherical groove (401), a rectangular groove (902) is provided on the inner wall of one side of the groove (901), a trapezoidal seat (903) is slidably mounted in the rectangular groove (902), and an arc-shaped pressing plate (904) for pressing and fixing the rotating ball (404) is fixedly mounted on one side of the trapezoidal seat (903).

2. The VR projection device that is easy to adjust at multiple angles according to claim 1, characterized in that: The synchronization mechanism comprises a sliding groove (703), a sliding seat (704) and a fixed rod (705); the sliding groove (703) is formed on the bottom of the mounting seat (1); the sliding seat (704) is fixedly mounted on the top of the driving seat (701); the sliding seat (704) is slidably connected to the corresponding sliding groove (703); and the same fixed rod (705) is fixedly mounted between the two sliding seats (704).

3. The VR projection device that is easy to adjust at multiple angles according to claim 1, characterized in that: The driving mechanism comprises a threaded hole (801), a driving screw (802) and a rotating plate (803); the threaded hole (801) is formed on the vertical rod (301); the driving screw (802) is installed with an internal thread of the threaded hole (801); one end of the driving screw (802) is rotatably installed on a corresponding driving seat (701); and the other end of the driving screw (802) is fixedly installed with the rotating plate (803).

4. The VR projection device that is easy to adjust at multiple angles according to claim 3, characterized in that: The driving seat (701) is provided with a rotation groove, the inner wall of the rotation groove is provided with an annular groove, and an annular seat is fixedly mounted on the driving screw rod (802), and the annular seat is rotationally connected to the annular groove.

5. The VR projection device that is easy to adjust at multiple angles according to claim 1, characterized in that: A plug hole (906) is provided on the inner wall of the bottom of the rectangular groove (902), the plug hole (906) is connected to the corresponding rectangular groove (902), and an extrusion rod (905) is fixedly installed on the top of the lower clamping seat (303), the extrusion rod (905) passes through the plug hole (906) and is matched with the corresponding trapezoidal seat (903).

6. The VR projection device that is easy to adjust at multiple angles according to claim 5, characterized in that: A spring groove (1001) is provided on the inner wall at the top of the rectangular groove (902); a spring seat (1002) is fixedly mounted on the top of the trapezoidal seat (903); the spring seat (1002) is slidably connected to the corresponding spring groove (1001); a return spring (1003) is fixedly mounted on one side of the spring seat (1002); and one end of the return spring (1003) is fixedly mounted on the inner wall of the spring groove (1001).

7. The VR projection device that is easy to adjust at multiple angles according to claim 1, characterized in that: The connecting mechanism (6) comprises a connecting rod (601), a connecting sleeve (602) and a connecting plate (603); the connecting rod (601) is fixedly mounted on the bottom of the rotating sphere (404); the connecting sleeve (602) is slidably mounted on the outer side of the connecting rod (601); and the bottom of the connecting sleeve (602) is fixedly connected to the fixing plate (5) via a disassembly mechanism.

8. The VR projection device that is easy to adjust at multiple angles according to claim 7, characterized in that: The outer side of the connecting rod (601) is provided with a plurality of fixing grooves (1101), and the inner walls on both sides of the connecting sleeve (602) are provided with threaded holes (1102), the inner threads of the threaded holes (1102) are provided with fixing bolts (1103), and the fixing bolts (1103) are matched with the corresponding fixing grooves (1101).

9. The VR projection device that is easy to adjust at multiple angles according to claim 7, characterized in that: The disassembly and assembly structure comprises a mounting hole (1201), a fixing screw (1202) and a fixing nut (1203); the mounting hole (1201) is opened on the top of the connecting plate (603); the fixing screw (1202) is fixedly mounted on the top of the fixing plate (5); the fixing screw (1202) passes through the corresponding mounting hole (1201) and is threadedly mounted with the fixing nut (1203).

10. The VR projection device that is easy to adjust at multiple angles according to claim 7, characterized in that: Limiting grooves are provided on the front and rear inner walls of the connecting sleeve (602), and limiting seats are fixedly installed on the front and rear sides of the connecting rod (601), and the limiting seats are slidably connected to the corresponding limiting grooves.

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