An installation device for facilitating the adjustment of the projection angle of a projector

Abstract

The present invention relates to the technical field of projector installation, and particularly relates to an installation device for facilitating the adjustment of the projection angle of a projector. The present invention provides an installation device for facilitating the adjustment of the projection angle of a projector that can adapt to different usage scenarios and can install projectors of different models at the same time. An installation device for facilitating the adjustment of the projection angle of a projector includes an installation plate, a U-shaped frame, a sliding seat, etc. U-shaped frames are connected to the lower sides of the front and rear parts of the installation plate, and a sliding seat is slidably connected between the U-shaped frames. In the present invention, by making the rotating arc plate close up to form a cylinder, and then hanging the rotating arc plate forming the cylinder on the ceiling, the projector is hung on the ceiling for use, so that it can adapt to different usage scenarios. When the installation holes of the projector are at the four corners, the projector is installed on the extrusion seat through bolts, so that projectors of different models can be installed.

Description

Technical Field

[0001] The present invention relates to the technical field of projector installation, and particularly relates to an installation device for facilitating the adjustment of the projection angle of a projector. Background Art

[0002] A projector, also known as a projection machine, is a device that can project images or videos onto a screen. It can be connected to a computer, VCD, DVD, BD, game console, DV, etc. through different interfaces to play corresponding video signals. Projectors are widely used in families, offices, schools, and entertainment venues. According to different working methods, there are different types such as CRT, LCD, and DLP. When in use, a projector needs to be used together with an installation bracket.

[0003] The existing projector installation brackets are usually composed of a tripod and a mounting plate. The projector is installed on the mounting plate for use. However, since the tripod can only be placed on the ground to support the projector and cannot suspend the projector, the usage scenarios are limited, and the installation method on the mounting plate is single and cannot be applied to projectors of different models, which is rather inconvenient.

[0004] Therefore, an installation device for facilitating the adjustment of the projection angle of a projector has been developed, which can adapt to different usage scenarios and can install projectors of different models at the same time. Summary of the Invention

[0005] In order to overcome the disadvantages of the existing projector installation brackets, which can only be placed on the ground to support the projector and cannot suspend the projector, resulting in limited usage scenarios and a single installation method that cannot be applied to projectors of different models, the present invention provides an installation device for facilitating the adjustment of the projection angle of a projector, which can adapt to different usage scenarios and can install projectors of different models at the same time.

[0006] The technical solution is as follows: An installation device for facilitating the adjustment of the projection angle of a projector includes a mounting plate, a U-shaped frame, a sliding seat, a positioning adjustment mechanism, and an extended installation mechanism. U-shaped frames are connected to the lower sides of the front and rear parts of the mounting plate. A sliding seat is slidably connected between the U-shaped frames. A positioning adjustment mechanism capable of installing the projector is provided between the sliding seat and the mounting plate. An extended installation mechanism capable of installing projectors of different models is provided on the positioning adjustment mechanism.

[0007] Preferably, a position alignment adjusting mechanism is further included. The position alignment adjusting mechanism includes a rotating rod, a universal joint, a first lead screw, a docking stud, a first connecting seat, a rotating seat, a second lead screw, a rotating mounting seat, a rotating arc plate, a rotating connecting frame and a moving connecting member. A rotating rod is rotatably connected to the middle of the sliding seat. The upper side of the rotating rod is rotatably connected to the first lead screw through the universal joint. The upper side of the first lead screw is connected to the docking stud. The thread directions of the first lead screw and the docking stud are opposite. The docking stud is rotatably connected to the mounting plate. The lower side of the rotating rod is connected to the first connecting seat. The lower side of the first connecting seat is rotatably connected to the rotating seat. The second lead screw is connected inside the rotating seat. The lower side of the rotating seat is rotatably connected to the rotating mounting seat. A plurality of rotating arc plates are rotatably connected to the rotating mounting seat. The inner sides of the upper parts of the rotating arc plates are rotatably connected to the rotating connecting frames. The rotating connecting frames are rotatably connected to the moving connecting member. The moving connecting member is threadedly connected to the second lead screw. Rotating the rotating seat drives the second lead screw to rotate, causing the moving connecting member to move, driving the rotating connecting frame to rotate, and enabling the rotating connecting frame to expand the rotating arc plates on the rotating mounting seat outwards. Then, place the rotating arc plates on the ground to support the mounting plate, thereby supporting the projector for use on the ground. When the projector needs to be used in a suspended manner, the rotating arc plates can be folded to form a cylinder, and then the rotating arc plates forming the cylinder are suspended on the ceiling, so that the projector is used suspended on the ceiling.

[0008] Preferably, the expansion mounting mechanism includes a moving frame, a first sliding rod, a pressing seat and a first spring. The moving frame is threadedly connected to the first lead screw. The front and rear parts of the moving frame are both slidably connected to two left and right first sliding rods. A pressing seat is connected between adjacent two first sliding rods. The pressing seats all pass through the mounting plate. A first spring is connected between the first sliding rods and the moving frame. While the first lead screw rotates, the moving frame moves upwards, driving the first sliding rod to move upwards, causing the pressing seat to move upwards and contact the bottom of the projector. Due to the action of the first spring, the pressing seat always keeps contacting the bottom of the projector. When the mounting holes of the projector are at the four corners, the projector can be mounted on the pressing seat through bolts.

[0009] Preferably, an extension mechanism is further included. The extension mechanism includes a knob, a third lead screw, a mounting foot and an anti-slip block. The lower parts of the rotating arc plates are all rotatably connected to the knobs. The third lead screws are all threadedly connected to the knobs. The third lead screws are all slidably connected to the adjacent rotating arc plates. The lower sides of the third lead screws are all rotatably connected to the mounting feet. The lower sides of the mounting feet are all connected to the anti-slip blocks. After the rotating arc plates are placed on the ground, the mounting feet contact the ground. The anti-slip blocks can increase the friction between the mounting feet and the ground, preventing the mounting feet from moving. When the height of the support for the projector needs to be adjusted, rotate the knob to make the third lead screw move outwards.

[0010] Preferably, the knobs are all provided with gripping patterns.

[0011] Preferably, a clamping mechanism is further included. The clamping mechanism includes a fixed connection frame, a second sliding rod, a clamping frame, and a second spring. Fixed connection frames are connected to the lower sides of the front and rear parts of the moving frame. Two second sliding rods are slidably connected to each fixed connection frame, one on the left and one on the right. A clamping frame is connected between the lower sides of two adjacent second sliding rods. A second spring is connected between each second sliding rod and the corresponding fixed connection frame. When the moving frame moves upward, it drives the fixed connection frame to move upward, causing the clamping frame to contact the sliding seat. Due to the action of the second spring, the clamping frame always closely adheres to the sliding seat.

[0012] Preferably, the clamping frames are all arc-shaped structures.

[0013] Preferably, a limiting mechanism is further included. The limiting mechanism includes an alignment ring and a clamping sleeve. Alignment rings are connected to the outsides of the first connection seat, the rotating seat, and the rotating mounting seat. A clamping sleeve is clamped outside the alignment ring. When the rotating arc plate is placed on the ground, the clamping sleeve slides down to the outside of the alignment ring on the rotating seat and the rotating mounting seat due to the action of gravity. When the rotating arc plate is suspended from the ceiling, the clamping sleeve slides down to the outside of the alignment ring on the rotating seat and the first connection seat due to the action of gravity.

[0014] Preferably, a wire management mechanism is further included. The wire management mechanism includes a second connection seat, a wire management frame, and a torsion spring. Second connection seats are connected to the upper sides of the left and right parts of the mounting plate. Wire management frames are rotatably connected to each second connection seat. The wire management frames are in contact with the mounting plate. A torsion spring is connected between each wire management frame and the corresponding second connection seat. After the projector is installed on the mounting plate, rotate the wire management frame to separate it from the mounting plate, and the torsion spring deforms. Then place the cable between the wire management frame and the mounting plate. After placing, release the wire management frame to allow the torsion spring to recover and drive the wire management frame to reset, so that the wire management frame fixes the cable on the mounting plate.

[0015] Preferably, the wire management frames are all cylindrical.

[0016] The beneficial effects of the present invention are as follows: 1. By making the rotating arc plate close up to form a cylinder and then suspending the formed cylinder-shaped rotating arc plate from the ceiling, the projector can be suspended from the ceiling for use, thus being able to adapt to different usage scenarios. When the mounting holes of the projector are at the four corners, the projector can be installed on the extrusion seat through bolts, so that projectors of different models can be installed.

[0017] 2. By rotating the knob, the third lead screw moves out, achieving the effect of being able to adjust the height of the support for the projector to facilitate adapting to different usage requirements of users.

[0018] 3. While the moving frame moves upward in the present invention, it drives the fixedly connected frame to move upward, causing the clamping frame to contact the sliding seat. Due to the acting force of the second spring, the clamping frame always closely adheres to the sliding seat, achieving the effect of being able to fix the angle of the projector and preventing the angle of the projector from changing.

[0019] 4. When the arc-shaped plate is placed on the ground in the present invention, the clamping sleeve slides downward due to gravity to the outside of the alignment rings on the rotating seat and the rotating mounting seat. When the arc-shaped plate is suspended from the ceiling, the clamping sleeve slides downward due to gravity to the outside of the alignment rings on the rotating seat and the first connecting seat, achieving the effect of being able to restrict the first connecting seat, the rotating seat, and the rotating mounting seat and ensuring the installation stability.

[0020] 5. In the present invention, the cable is placed between the cable management rack and the mounting plate. After placement, the cable management rack is released, enabling the torsion spring to recover and driving the cable management rack to reset, so that the cable management rack fixes the cable on the mounting plate, achieving the effect of being able to fix the cable on the projector and preventing the cable from getting messy. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the present invention.

[0022] Figure 2 It is a first three-dimensional structural schematic diagram of the alignment adjustment mechanism of the present invention.

[0023] Figure 3 It is a second three-dimensional structural schematic diagram of the alignment adjustment mechanism of the present invention.

[0024] Figure 4 It is a first partial three-dimensional structural schematic diagram of the alignment adjustment mechanism of the present invention.

[0025] Figure 5 It is a second partial three-dimensional structural schematic diagram of the alignment adjustment mechanism of the present invention.

[0026] Figure 6 It is a three-dimensional structural schematic diagram of the expansion installation mechanism of the present invention.

[0027] Figure 7 It is a three-dimensional structural schematic diagram of the extension mechanism of the present invention.

[0028] Figure 8 It is a three-dimensional structural schematic diagram of the clamping mechanism of the present invention.

[0029] Figure 9 It is a three-dimensional structural schematic diagram of the limiting mechanism of the present invention.

[0030] Figure 10 It is a partial three-dimensional structural schematic diagram of the limiting mechanism of the present invention.

[0031] Figure 11 This is a three-dimensional structural schematic diagram of the cable management mechanism of the present invention.

[0032] Explanation of reference numerals: 1 - mounting plate, 2 - U-shaped frame, 3 - sliding seat, 4 - alignment adjustment mechanism, 40 - rotating rod, 41 - universal joint, 42 - first lead screw, 43 - docking stud, 44 - first connecting seat, 45 - rotating seat, 46 - second lead screw, 47 - rotating mounting seat, 471 - rotating arc plate, 48 - rotating connecting frame, 49 - moving connecting piece, 5 - expansion mounting mechanism, 50 - moving frame, 51 - first sliding rod, 52 - extrusion seat, 53 - first spring, 6 - extension mechanism, 60 - knob, 61 - third lead screw, 62 - mounting support leg, 63 - anti-slip block, 7 - clamping mechanism, 70 - fixed connecting frame, 71 - second sliding rod, 72 - clamping frame, 73 - second spring, 8 - limiting mechanism, 80 - alignment ring, 81 - clamping sleeve, 9 - cable management mechanism, 90 - second connecting seat, 91 - cable management frame, 92 - torsion spring. Detailed implementation manners

[0033] The following is only a preferred embodiment of the present invention and does not limit the protection scope of the present invention accordingly.

[0034] An installation device for facilitating the adjustment of the projection angle of a projector, as Figure 1 shown, includes a mounting plate 1, a U-shaped frame 2, a sliding seat 3, an alignment adjustment mechanism 4 and an expansion mounting mechanism 5. The lower sides of the front and rear parts of the mounting plate 1 are both connected with a U-shaped frame 2. A sliding seat 3 is slidably connected between the U-shaped frames 2. An alignment adjustment mechanism 4 is provided between the sliding seat 3 and the mounting plate 1, and an expansion mounting mechanism 5 is provided on the alignment adjustment mechanism 4.

[0035] As Figures 1-5 shown, the alignment adjustment mechanism 4 includes a rotating rod 40, a universal joint 41, a first lead screw 42, a docking stud 43, a first connecting seat 44, a rotating seat 45, a second lead screw 46, a rotating mounting seat 47, a rotating arc plate 471, a rotating connecting frame 48 and a moving connecting piece 49. The middle part of the sliding seat 3 is rotatably connected with a rotating rod 40. The upper side of the rotating rod 40 is rotatably connected with a first lead screw 42 through a universal joint 41. The upper side of the first lead screw 42 is connected with a docking stud 43. The thread directions of the first lead screw 42 and the docking stud 43 are opposite. The docking stud 43 is rotatably connected with the mounting plate 1. The lower side of the rotating rod 40 is connected with a first connecting seat 44. The lower side of the first connecting seat 44 is rotatably connected with a rotating seat 45. The inside of the rotating seat 45 is connected with a second lead screw 46. The lower side of the rotating seat 45 is rotatably connected with a rotating mounting seat 47. Four rotating arc plates 471 are rotatably connected to the rotating mounting seat 47. The upper inner sides of the rotating arc plates 471 are all rotatably connected with a rotating connecting frame 48. A moving connecting piece 49 is rotatably connected between the rotating connecting frames 48. The moving connecting piece 49 is threadedly connected with the second lead screw 46.

[0036] As Figure 1 and Figure 6 shown, the extension installation mechanism 5 includes a moving frame 50, a first sliding rod 51, a pressing seat 52 and a first spring 53. A moving frame 50 is threadedly connected to the first lead screw 42. Both the front and rear parts of the moving frame 50 are slidably connected to two left and right first sliding rods 51. A pressing seat 52 is connected between adjacent two first sliding rods 51. The pressing seats 52 all pass through the mounting plate 1. A first spring 53 is connected between the first sliding rods 51 and the moving frame 50 respectively.

[0037] When using the present invention, first rotate the first connecting seat 44 to drive the rotating rod 40 to rotate, so that the first lead screw 42 rotates, and then the docking stud 43 rotates. Then place the projector on the mounting plate 1 so that the docking stud 43 is connected to the projector, and install the projector on the mounting plate 1. After installation, according to the use requirements, move the sliding seat 3 on the U-shaped frame 2 to drive the rotating rod 40 to move. Through the universal joint 41, the rotating rod 40 rotates relative to the first lead screw 42 to adjust the angle of the mounting plate 1 relative to the sliding seat 3. After adjustment, rotate the rotating seat 45 to drive the second lead screw 46 to rotate, so that the moving connecting member 49 moves, driving the rotating connecting frame 48 to rotate, and the rotating connecting frame 48 expands the rotating arc plate 471 on the rotating mounting seat 47 outwards. Then place the rotating arc plate 471 on the ground to support the mounting plate 1, and further support the projector for use on the ground. When the projector needs to be suspended for use, the rotating arc plate 471 can be retracted to form a cylinder, and then the formed cylinder-shaped rotating arc plate 471 is suspended on the ceiling, so that the projector is suspended on the ceiling for use. When the first lead screw 42 rotates, the moving frame 50 moves upwards, driving the first sliding rod 51 to move upwards, so that the pressing seat 52 moves upwards to contact the bottom of the projector. Through the action of the first spring 53, the pressing seat 52 always keeps in contact with the bottom of the projector, thus playing a role in strengthening the stability of the projector and avoiding the projector from shaking. When the mounting holes of the projector are at the four corners, the projector can be installed on the pressing seat 52 through bolts, thus playing a role in being able to adapt to different use scenarios and being able to install projectors of different models at the same time.

[0038] As Figure 1 and Figure 7 shown, it further includes an extension mechanism 6. The extension mechanism 6 includes a knob 60, a third lead screw 61, a mounting support foot 62 and an anti-slip block 63. The lower parts of the rotating arc plates 471 are all rotatably connected to knobs 60. The knobs 60 are all provided with grip patterns for easy grasping. The third lead screws 61 are all threadedly connected to the knobs 60. The third lead screws 61 are all slidably connected to the adjacent rotating arc plates 471. The lower sides of the third lead screws 61 are all rotatably connected to mounting support feet 62. The lower sides of the mounting support feet 62 are all connected with anti-slip blocks 63.

[0039] By using the extension mechanism 6 of the present device, the height of the support for the projector can be adjusted. After the arc-shaped plate 471 is rotated and placed on the ground, the mounting feet 62 come into contact with the ground. The anti-slip blocks 63 can increase the friction between the mounting feet 62 and the ground, preventing the mounting feet 62 from moving. When it is necessary to adjust the height of the support for the projector, the knob 60 is rotated to make the third lead screw 61 move out, thus playing the role of being able to adjust the height of the support for the projector to facilitate adapting to different usage requirements of users.

[0040] As Figure 1 and Figure 8 shown, it further includes a clamping mechanism 7. The clamping mechanism 7 includes a fixed connection frame 70, second sliding rods 71, clamping frames 72 and second springs 73. Fixed connection frames 70 are connected to the lower sides of the front and rear parts of the moving frame 50. Two left and right second sliding rods 71 are slidably connected to the fixed connection frames 70. Clamping frames 72 are connected between the lower sides of adjacent two second sliding rods 71. The clamping frames 72 are all arc-shaped structures, which are convenient for stable clamping. Second springs 73 are connected between the second sliding rods 71 and the corresponding fixed connection frames 70.

[0041] By using the clamping mechanism 7 of the present device, the angle of the projector can be fixed. When the moving frame 50 moves upward, it drives the fixed connection frame 70 to move upward, making the clamping frame 72 contact the sliding seat 3. Through the acting force of the second spring 73, the clamping frame 72 always closely adheres to the sliding seat 3, thus playing the role of being able to fix the angle of the projector and preventing the angle of the projector from changing.

[0042] As Figure 1 、 Figure 9 and Figure 10 shown, it further includes a limiting mechanism 8. The limiting mechanism 8 includes an alignment ring 80 and a clamping sleeve 81. Alignment rings 80 are connected to the outsides of the first connection seat 44, the rotating seat 45 and the rotating mounting seat 47. A clamping sleeve 81 is clamped outside the alignment ring 80.

[0043] By using the limiting mechanism 8 of the present device, the first connecting seat 44, the rotating seat 45 and the rotating mounting seat 47 can be restricted. When the rotating arc plate 471 is placed on the ground, the locking sleeve 81 slides down to the outside of the alignment ring 80 on the rotating seat 45 and the rotating mounting seat 47 due to the action of gravity. When the rotating arc plate 471 is suspended from the ceiling, the locking sleeve 81 slides down to the outside of the alignment ring 80 on the rotating seat 45 and the first connecting seat 44 due to the action of gravity, thereby limiting the first connecting seat 44, the rotating seat 45 and the rotating mounting seat 47, avoiding the first connecting seat 44, the rotating seat 45 and the rotating mounting seat 47 from rotating on their own, and ensuring the installation stability. When the rotating arc plate 471 is retracted, the locking sleeve 81 can be moved to the outside of the knob 60, and then the locking sleeve 81 is rotated to rotate the knob 60, so that the third screw rod 61 is extended, and then the mounting foot 62 is installed on the ceiling.

[0044] like Figure 1 and Figure 11 As shown, it also includes a wire management mechanism 9, which includes a second connecting seat 90, a wire management frame 91 and a torsion spring 92. The second connecting seats 90 are connected to the upper sides of the left and right parts of the mounting plate 1. The second connecting seats 90 are rotatably connected to the wire management frames 91. The wire management frames 91 are all cylindrical to reduce the wear on the cables. The wire management frames 91 are in contact with the mounting plate 1, and the wire management frames 91 are connected to the second connecting seats 90 with torsion springs 92.

[0045] The cable management mechanism 9 of the device can be used to fix the cables on the projector. After the projector is installed on the mounting plate 1, the cable management frame 91 is rotated to separate the cable management frame 91 from the mounting plate 1, and the torsion spring 92 is deformed. Then the cables are placed between the cable management frame 91 and the mounting plate 1. After placement, the cable management frame 91 is released to restore the torsion spring 92, driving the cable management frame 91 to reset, so that the cable management frame 91 fixes the cables on the mounting plate 1, thereby fixing the cables on the projector and avoiding cable confusion.

[0046] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made using the contents of the present invention specification, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An installation device for facilitating the adjustment of the projection angle of a projector, characterized in that, It includes a mounting plate (1), a U-shaped frame (2), a sliding seat (3), an alignment adjustment mechanism (4) and an extended mounting mechanism (5). The lower sides of the front and rear parts of the mounting plate (1) are both connected with the U-shaped frame (2). A sliding seat (3) is slidably connected between the U-shaped frames (2). An alignment adjustment mechanism (4) capable of mounting a projector is provided between the sliding seat (3) and the mounting plate (1). An extended mounting mechanism (5) capable of mounting projectors of different models is provided on the alignment adjustment mechanism (4). The alignment adjustment mechanism (4) includes a rotating rod (40), a universal joint (41), a first lead screw (42), a docking stud (43), a first connecting seat (44), a rotating seat (45), a second lead screw (46), a rotating mounting seat (47), a rotating arc plate (471), a rotating connecting frame (48) and a moving connecting piece (49). The middle part of the sliding seat (3) is rotatably connected with the rotating rod (40). The upper side of the rotating rod (40) is rotatably connected with the first lead screw (42) through the universal joint (41). The upper side of the first lead screw (42) is connected with the docking stud (43). The thread directions of the first lead screw (42) and the docking stud (43) are opposite. The docking stud (43) is rotatably connected with the mounting plate (1). The lower side of the rotating rod (40) is connected with the first connecting seat (44). The lower side of the first connecting seat (44) is rotatably connected with the rotating seat (45). The inside of the rotating seat (45) is connected with the second lead screw (46). The lower side of the rotating seat (45) is rotatably connected with the rotating mounting seat (47). The second lead screw (46) passes through the rotating mounting seat (47). A plurality of rotating arc plates (471) are rotatably connected to the rotating mounting seat (47). The upper inner sides of the rotating arc plates (471) are all rotatably connected with the rotating connecting frame (48). The rotating connecting frames (48) are rotatably connected with the moving connecting piece (49). The moving connecting piece (49) is threadedly connected with the second lead screw (46). Rotating the rotating seat (45) drives the second lead screw (46) to rotate, causing the moving connecting piece (49) to move, driving the rotating connecting frame (48) to rotate, and causing the rotating connecting frame (48) to expand the rotating arc plates (471) on the rotating mounting seat (47) outwards. Then, the rotating arc plates (471) are placed on the ground to support the mounting plate (1), thereby supporting the projector for use on the ground. When the projector needs to be used in a suspended manner, the rotating arc plates (471) can be retracted to form a cylinder, and then the rotating arc plates (471) forming the cylinder are suspended on the ceiling, so that the projector is used in a suspended manner on the ceiling;The expansion installation mechanism (5) includes a moving frame (50), a first sliding rod (51), a pressing seat (52) and a first spring (53). A moving frame (50) is threadedly connected to the first lead screw (42). Two left and right first sliding rods (51) are slidably connected to both the front and rear parts of the moving frame (50). A pressing seat (52) is connected between two adjacent first sliding rods (51). The pressing seats (52) all pass through the mounting plate (1). A first spring (53) is connected between the first sliding rods (51) and the moving frame (50). When the first lead screw (42) rotates, the moving frame (50) moves upward, driving the first sliding rods (51) to move upward, so that the pressing seats (52) move upward to contact the bottom of the projector. Due to the action of the first spring (53), the pressing seats (52) always keep in contact with the bottom of the projector. When the mounting holes of the projector are at the four corners, the projector can be mounted on the pressing seats (52) through bolts.

2. The installation device for facilitating the adjustment of the projection angle of a projector according to claim 1, wherein, It further includes an extension mechanism (6). The extension mechanism (6) includes a knob (60), a third lead screw (61), mounting feet (62) and anti-slip blocks (63). Knobs (60) are rotatably connected to the lower parts of the rotating arc plates (471). Third lead screws (61) are threadedly connected to the knobs (60). The third lead screws (61) are slidably connected to the adjacent rotating arc plates (471). Mounting feet (62) are rotatably connected to the lower sides of the third lead screws (61). Anti-slip blocks (63) are connected to the lower sides of the mounting feet (62). After the rotating arc plates (471) are placed on the ground, the mounting feet (62) are in contact with the ground. The anti-slip blocks (63) can increase the friction between the mounting feet (62) and the ground to prevent the mounting feet (62) from moving. When the height of the support for the projector needs to be adjusted, rotate the knobs (60) to make the third lead screws (61) move outwards.

3. The mounting device for facilitating the adjustment of the projection angle of a projector according to claim 2, wherein The knobs (60) are each provided with gripping patterns.

4. An installation device for facilitating the adjustment of the projection angle of a projector according to claim 1, characterized in that, It further includes a clamping mechanism (7). The clamping mechanism (7) includes a fixed connection frame (70), second sliding rods (71), clamping frames (72) and second springs (73). Fixed connection frames (70) are connected to the lower sides of the front and rear parts of the moving frame (50). Two left and right second sliding rods (71) are slidably connected to each of the fixed connection frames (70). Clamping frames (72) are connected between the lower sides of the adjacent second sliding rods (71). Second springs (73) are connected between the second sliding rods (71) and the connected fixed connection frames (70). When the moving frame (50) moves upwards, it drives the fixed connection frames (70) to move upwards, causing the clamping frames (72) to contact the sliding seats (3). Due to the action of the second springs (73), the clamping frames (72) always closely adhere to the sliding seats (3).

5. An installation device for facilitating the adjustment of the projection angle of a projector according to claim 4, characterized in that, The clamping frames (72) are each of an arc-shaped structure.

6. The installation device for facilitating the adjustment of the projection angle of a projector according to claim 4, characterized in that, It further includes a limiting mechanism (8). The limiting mechanism (8) includes an alignment ring (80) and a clamping sleeve (81). Alignment rings (80) are connected to the outsides of the first connection seat (44), the rotating seat (45) and the rotating mounting seat (47). A clamping sleeve (81) is snap-fitted outside the alignment ring (80). When the rotating arc plate (471) is placed on the ground, the clamping sleeve (81) slides down due to gravity to the outside of the alignment ring (80) on the rotating seat (45) and the rotating mounting seat (47). When the rotating arc plate (471) is suspended from the ceiling, the clamping sleeve (81) slides down due to gravity to the outside of the alignment ring (80) on the rotating seat (45) and the first connection seat (44).

7. The installation device for facilitating the adjustment of the projection angle of a projector according to claim 4, characterized in that, It further includes a cable management mechanism (9), and the cable management mechanism (9) includes a second connecting seat (90), a cable management rack (91) and a torsion spring (92). Second connecting seats (90) are connected to the upper sides of the left and right parts of the mounting plate (1). Cable management racks (91) are rotatably connected to the second connecting seats (90). The cable management racks (91) are in contact with the mounting plate (1). Torsion springs (92) are connected between the cable management racks (91) and the corresponding second connecting seats (90). After the projector is installed on the mounting plate (1), rotate the cable management rack (91) to separate the cable management rack (91) from the mounting plate (1), and the torsion spring (92) deforms. Then place the cable between the cable management rack (91) and the mounting plate (1). After placing, release the cable management rack (91) to enable the torsion spring (92) to recover and drive the cable management rack (91) to reset, so that the cable management rack (91) fixes the cable on the mounting plate (1).

8. An installation device for facilitating the adjustment of the projection angle of a projector according to claim 7, characterized in that, The cable management racks (91) are all cylindrical.

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