Mounting device convenient for adjusting projection angle of projector

Abstract

The invention relates to the technical field of projector installation, in particular to an installation device capable of conveniently adjusting the projection angle of a projector. The invention provides the mounting device capable of conveniently adjusting the projection angle of the projector, which can adapt to different use scenes and can be used for mounting different models of projectors at the same time. A mounting device convenient for adjusting the projection angle of a projector comprises a mounting plate, U-shaped frames, a sliding seat and the like, the U-shaped frames are connected to the lower sides of the front and rear parts of the mounting plate, and the sliding seat is slidably connected between the U-shaped frames. The rotating arc-shaped plates are folded to form the cylinder, then the rotating arc-shaped plates forming the cylinder are hung on the ceiling, the projector is hung on the ceiling for use, and therefore the projector can be suitable for different use scenes, when mounting holes of the projector are formed in the four corners, the projector is mounted on the extrusion base through bolts, and the projector can be conveniently and rapidly used. Therefore, projectors of different models can be installed.

Description

Technical Field

[0001] The present invention relates to the technical field of projector installation, and in particular to a mounting device which is convenient for adjusting the projection angle of a projector. Background Art

[0002] A projector, also known as a projector, is a device that can project images or videos onto a screen. It can be connected to computers, VCDs, DVDs, BDs, game consoles, DVs, etc. through different interfaces to play corresponding video signals. Projectors are widely used in homes, offices, schools, and entertainment venues. Depending on the working method, there are different types such as CRT, LCD, DLP, etc. The projector needs to be used with a mounting bracket.

[0003] An existing projector mounting bracket is usually composed of a tripod and a mounting plate, and the projector is mounted on the mounting plate for use. However, since the tripod can only be placed on the ground to support the projector and cannot be used to hang the projector, the usage scenarios are limited. In addition, the installation method on the mounting plate is single and cannot be applied to projectors of different models, which is inconvenient.

[0004] Therefore, a mounting device has been developed that can adapt to different usage scenarios and can install projectors of different models and is convenient for adjusting the projection angle of the projector. Summary of the invention

[0005] In order to overcome the shortcomings of the existing projector mounting bracket, which can only be placed on the ground to support the projector but cannot be used to suspend the projector, resulting in limited usage scenarios, and a single installation method and cannot be applied to projectors of different models, the present invention provides a mounting device that can adapt to different usage scenarios and can install projectors of different models and is convenient for adjusting the projection angle of the projector.

[0006] The technical solution is as follows: A mounting device that is convenient for adjusting the projection angle of a projector, comprising a mounting plate, a U-shaped frame, a sliding seat, an alignment adjustment mechanism and an expansion mounting mechanism, wherein the lower sides of the front and rear parts of the mounting plate are connected to U-shaped frames, a sliding seat is slidably connected between the U-shaped frames, an alignment adjustment mechanism capable of installing the projector is provided between the sliding seat and the mounting plate, and an expansion mounting mechanism capable of installing projectors of different models is provided on the alignment adjustment mechanism.

[0007] As a preference, it also includes a positioning adjustment mechanism, which includes a rotating rod, a universal joint, a first screw rod, a docking stud, a first connecting seat, a rotating seat, a second screw rod, a rotating mounting seat, a rotating arc plate, a rotating connecting frame and a movable connecting piece, the sliding seat is rotatably connected to the rotating rod in the middle, the upper side of the rotating rod is rotatably connected to the first screw rod through a universal joint, the upper side of the first screw rod is connected to the docking stud, the thread directions of the first screw rod 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 screw rod is connected inside the rotating seat, the lower side of the rotating seat is rotatably connected to the rotating mounting seat, and the rotating mounting seat is rotatably connected to the rotating mounting seat. A plurality of rotating arc plates are connected, and a rotating connecting frame is rotatably connected to the inner side of the upper part of the rotating arc plates, and a movable connecting piece is rotatably connected between the rotating connecting frames, and the movable connecting piece is threadedly connected to the second screw rod. The rotating seat is rotated to drive the second screw rod to rotate, so that the movable connecting piece moves, and the rotating connecting frame is driven to rotate, so that the rotating connecting frame pushes the rotating arc plate on the rotating mounting seat outward, and then the rotating arc plate is placed on the ground to support the mounting plate, thereby supporting the projector for use on the ground. When the projector needs to be suspended for use, the rotating arc plate can be folded to form a cylinder, and then the rotating arc plate forming the cylinder is hung on the ceiling, so that the projector is suspended on the ceiling for use.

[0008] Preferably, the expansion installation mechanism includes a movable frame, a first sliding rod, an extrusion seat and a first spring, the movable frame is threadedly connected to the first screw rod, the front and rear parts of the movable frame are slidably connected to the left and right first sliding rods, the extrusion seat is connected between the two adjacent first sliding rods, the extrusion seat passes through the mounting plate, and the first sliding rod is connected to the movable frame with a first spring. When the first screw rod rotates, the movable frame moves upward, driving the first sliding rod to move upward, so that the extrusion seat moves upward and contacts with the bottom of the projector, and the extrusion seat is always kept in contact with the bottom of the projector through the action force of the first spring. When the mounting holes of the projector are at the four corners, the projector can be mounted on the extrusion seat by bolts.

[0009] Preferably, an extension mechanism is also included, which includes a knob, a third screw rod, a mounting foot and an anti-sliding block. The lower part of the rotating arc plate is rotatably connected to the knob, and the third screw rod is threadedly connected to the knob. The third screw rod is slidably connected to the adjacent rotating arc plate, and the lower side of the third screw rod is rotatably connected to the mounting foot, and the lower side of the mounting foot is connected to the anti-sliding block. After the rotating arc plate is placed on the ground, the mounting foot contacts the ground, and the anti-sliding block can increase the friction between the mounting foot and the ground to prevent the mounting foot from moving. When the height of the projector support needs to be adjusted, the knob is turned to move the third screw rod out.

[0010] Preferably, the knobs are provided with scratch marks.

[0011] Preferably, it also includes a clamping mechanism, which includes a fixed connecting frame, a second sliding rod, a clamping frame and a second spring. The lower sides of the front and rear parts of the movable frame are connected to the fixed connecting frame, and the left and right second sliding rods are slidably connected to the fixed connecting frame. The clamping frame is connected between the lower sides of the two adjacent second sliding rods, and the second spring is connected between the second sliding rods and the fixed connecting frame connected thereto. When the movable frame moves upward, it drives the fixed connecting frame to move upward, so that the clamping frame contacts the sliding seat, and the clamping frame is always kept close to the sliding seat through the action of the second spring.

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

[0013] Preferably, a limiting mechanism is also included, which includes an alignment ring and a locking sleeve. The outer sides of the first connecting seat, the rotating seat and the rotating mounting seat are all connected with the alignment ring, and the locking sleeve is locked on the outside of the alignment ring. When the rotating arc plate is placed on the ground, the locking sleeve slides down to the outside of the alignment ring on the rotating seat and the rotating mounting seat due to gravity. When the rotating arc plate is suspended from the ceiling, the locking sleeve slides down to the outside of the alignment ring on the rotating seat and the first connecting seat due to gravity.

[0014] Preferably, it also includes a cable management mechanism, which includes a second connecting seat, a cable management frame and a torsion spring. The second connecting seat is connected to the upper sides of the left and right parts of the mounting plate. The second connecting seat is rotatably connected to the cable management frame. The cable management frame is in contact with the mounting plate. The cable management frame is connected to the second connecting seat with a torsion spring. After the projector is installed on the mounting plate, the cable management frame is rotated to separate from the mounting plate, and the torsion spring is deformed. Then, the cables are placed between the cable management frame and the mounting plate. After placement, the cable management frame is released to restore the torsion spring, which drives the cable management frame to reset, so that the cable management frame fixes the cables on the mounting plate.

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

[0016] The beneficial effects of the present invention are: 1. The present invention makes the rotating arc plate fold into a cylinder, and then hangs the rotating arc plate forming the cylinder on the ceiling, so that the projector is suspended on the ceiling for use, thereby being adaptable to different usage scenarios. When the mounting holes of the projector are at the four corners, the projector is installed on the extrusion seat by bolts, so that projectors of different models can be installed.

[0017] 2. The present invention achieves the effect of being able to adjust the height of the projector support by rotating the knob to move the third screw rod out, so as to meet the different usage requirements of users.

[0018] 3. The present invention drives the fixed connecting frame to move upward while the movable frame moves upward, so that the clamping frame contacts the sliding seat. Through the action of the second spring, the clamping frame is always in close contact with the sliding seat, thereby achieving the effect of fixing the angle of the projector and preventing the projector angle from changing.

[0019] 4. When the rotating arc plate is placed on the ground, the locking sleeve slides down to the outside of the alignment rings on the rotating seat and the rotating mounting seat due to gravity. When the rotating arc plate is suspended on the ceiling, the locking sleeve slides down to the outside of the alignment rings on the rotating seat and the first connecting seat due to gravity, thereby achieving the effect of limiting the first connecting seat, the rotating seat and the rotating mounting seat to ensure installation stability.

[0020] 5. The present invention places the cables between the cable management rack and the mounting plate, and after placement, loosens the cable management rack to restore the torsion spring, driving the cable management rack to reset, so that the cable management rack fixes the cables on the mounting plate, thereby achieving the effect of being able to fix the cables on the projector and avoiding cable confusion. BRIEF DESCRIPTION OF THE DRAWINGS

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

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

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

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

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

[0026] Figure 6 This is a schematic diagram of the three-dimensional structure of the expanded installation mechanism of the present invention.

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

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

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

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

[0031] Fig.11 It is a schematic diagram of the three-dimensional structure of the wire management mechanism of the present invention.

[0032] Explanation of the accompanying drawings: 1_mounting plate, 2_U-shaped frame, 3_sliding seat, 4_alignment adjustment mechanism, 40_turn rod, 41_universal joint, 42_first screw rod, 43_docking stud, 44_first connecting seat, 45_rotating seat, 46_second screw rod, 47_rotating mounting seat, 471_rotating arc plate, 48_rotating connecting frame, 49_movable 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 screw rod, 62_mounting foot, 63_anti-sliding 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_positioning sleeve, 9_cable management mechanism, 90_second connecting seat, 91_cable management frame, 92_torsion spring. DETAILED DESCRIPTION

[0033] The following descriptions are merely preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention.

[0034] A mounting device for facilitating adjustment of the projection angle of a projector, such as Figure 1 As shown, it 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 connected to the U-shaped frames 2, the sliding seats 3 are slidably connected between the U-shaped frames 2, the alignment adjustment mechanism 4 is provided between the sliding seat 3 and the mounting plate 1, and the expansion mounting mechanism 5 is provided on the alignment adjustment mechanism 4.

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

[0036] like Figure 1 and Figure 6 As shown, the expansion installation mechanism 5 includes a moving frame 50, a first sliding rod 51, an extrusion seat 52 and a first spring 53. The moving frame 50 is threadedly connected to the first screw rod 42. The front and rear parts of the moving frame 50 are slidably connected to the left and right first sliding rods 51. An extrusion seat 52 is connected between two adjacent first sliding rods 51. The extrusion seats 52 pass through the mounting plate 1. The first sliding rods 51 are connected to the moving frame 50 with first springs 53.

[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 screw rod 42 rotates, and then the docking stud 43 rotates, and then the projector is placed on the mounting plate 1, so that the docking stud 43 is connected to the projector, and the projector is installed on the mounting plate 1. After installation, according to the use requirements, the sliding seat 3 is moved on the U-shaped frame 2 to drive the rotating rod 40 to move, and the rotating rod 40 is rotated relative to the first screw rod 42 through the universal joint 41 to adjust the angle of the mounting plate 1 relative to the sliding seat 3. After the adjustment, the rotating seat 45 is rotated to drive the second screw rod 46 to rotate, so that the movable connecting member 49 moves, and drives the rotating connecting frame 48 to rotate, so that the rotating connecting frame 48 will open the rotating arc plate 471 on the rotating mounting seat 47 outward, and then the rotating arc plate 471 is placed on the ground to support the mounting plate 1. , and then support the projector for use on the ground. When the projector needs to be hung for use, the rotating arc plate 471 can be folded to form a cylinder, and then the rotating arc plate 471 forming the cylinder can be hung on the ceiling, so that the projector can be hung on the ceiling for use. While the first screw 42 rotates, the movable frame 50 moves upward, driving the first sliding rod 51 to move upward, so that the extrusion seat 52 moves upward and contacts the bottom of the projector. Through the action force of the first spring 53, the extrusion seat 52 always keeps in contact with the bottom of the projector, thereby enhancing the stability of the projector and preventing the projector from shaking. When the mounting holes of the projector are at the four corners, the projector can be installed on the extrusion seat 52 by bolts, thereby adapting to different usage scenarios and being able to install projectors of different models.

[0038] like Figure 1 and Figure 7 As shown, an extension mechanism 6 is also included, and the extension mechanism 6 includes a knob 60, a third screw rod 61, a mounting foot 62 and an anti-sliding block 63. The lower part of the rotating arc plate 471 is rotatably connected to the knob 60, and the knob 60 is provided with a gripping pattern for easy gripping. The knob 60 is threadedly connected to the third screw rod 61, and the third screw rod 61 is slidably connected to the adjacent rotating arc plate 471. The lower side of the third screw rod 61 is rotatably connected to the mounting foot 62, and the lower side of the mounting foot 62 is connected to the anti-sliding block 63.

[0039] By using the extension mechanism 6 of the device, the height of the projector support can be adjusted. After the arc plate 471 is rotated and placed on the ground, the mounting foot 62 is in contact with the ground. The anti-sliding block 63 can increase the friction between the mounting foot 62 and the ground to prevent the mounting foot 62 from moving. When the height of the projector support needs to be adjusted, the knob 60 is turned to move the third screw rod 61 out, thereby adjusting the height of the projector support to meet the different usage requirements of users.

[0040] like Figure 1 and Figure 8 As shown, it also includes a clamping mechanism 7, which includes a fixed connecting frame 70, a second sliding rod 71, a clamping frame 72 and a second spring 73. The lower sides of the front and rear parts of the movable frame 50 are connected to the fixed connecting frame 70, and the fixed connecting frame 70 is slidably connected to the left and right second sliding rods 71. The lower sides of the two adjacent second sliding rods 71 ​​are connected to the clamping frame 72. The clamping frame 72 is an arc-shaped structure for easy clamping and stability. The second sliding rods 71 ​​are connected to the fixed connecting frame 70 with the second spring 73.

[0041] By using the clamping mechanism 7 of the device, the angle of the projector can be fixed. When the movable frame 50 moves upward, the fixed connecting frame 70 is driven to move upward, so that the clamping frame 72 contacts the sliding seat 3. Through the force of the second spring 73, the clamping frame 72 is always in close contact with the sliding seat 3, thereby fixing the angle of the projector and preventing the projector angle from changing.

[0042] like Figure 1 , Fig. 9 and Fig.10 As shown, a limiting mechanism 8 is also included, which includes an alignment ring 80 and a locking sleeve 81. The outer sides of the first connecting seat 44, the rotating seat 45 and the rotating mounting seat 47 are all connected with the alignment ring 80, and the outer side of the alignment ring 80 is locked with the locking sleeve 81.

[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 Fig.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. A mounting device for facilitating adjustment of the projection angle of a projector, characterized in that: The invention comprises 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 to the U-shaped frame (2); the sliding seat (3) is slidably connected between the U-shaped frame (2); an alignment adjustment mechanism (4) capable of mounting a projector is provided between the sliding seat (3) and the mounting plate (1); the alignment adjustment mechanism (4) is provided with an expansion mounting mechanism (5) capable of mounting projectors of different models; the alignment adjustment mechanism (4) comprises a rotating rod (40), a universal joint (41), a first screw rod (42), and a docking stud (43). , a first connecting seat (44), a rotating seat (45), a second screw rod (46), a rotating mounting seat (47), a rotating arc plate (471), a rotating connecting frame (48) and a movable connecting member (49), the middle part of the sliding seat (3) is rotatably connected to a rotating rod (40), the upper side of the rotating rod (40) is rotatably connected to a first screw rod (42) through a universal joint (41), the upper side of the first screw rod (42) is connected to a docking stud (43), the thread directions of the first screw rod (42) and the docking stud (43) are opposite, the docking stud (43) is rotatably connected to the mounting plate (1), and the lower side of the rotating rod (40) is connected to the first connecting seat ( 44), the first connecting seat (44) is rotatably connected to a rotating seat (45) at the lower side, a second screw rod (46) is connected inside the rotating seat (45), a rotating mounting seat (47) is rotatably connected at the lower side of the rotating seat (45), the second screw rod (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 to rotating connecting frames (48), a movable connecting member (49) is rotatably connected between the rotating connecting frames (48), the movable connecting member (49) is threadedly connected to the second screw rod (46), and the rotating The rotating seat (45) drives the second screw rod (46) to rotate, so that the movable connecting member (49) moves, and drives the rotating connecting frame (48) to rotate, so that the rotating connecting frame (48) pushes the rotating arc plate (471) on the rotating mounting seat (47) outward, and then the rotating arc plate (471) is 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 suspended for use, the rotating arc plate (471) can be folded to form a cylinder, and then the rotating arc plate (471) formed into a cylinder can be suspended on the ceiling, so that the projector can be suspended on the ceiling for use;The expansion installation mechanism (5) comprises a moving frame (50), a first sliding rod (51), an extrusion seat (52) and a first spring (53). The moving frame (50) is threadedly connected to the first screw rod (42). The front and rear parts of the moving frame (50) are both slidably connected to the left and right first sliding rods (51). The extrusion seat (52) is connected between the two adjacent first sliding rods (51). The extrusion seat (52) passes through the mounting plate (1). The first spring (53) is connected between the first sliding rod (51) and the moving frame (50). When the first screw rod (42) rotates, the moving frame (50) moves upward, driving the first sliding rod (51) to move upward, so that the extrusion seat (52) moves upward and contacts the bottom of the projector. The extrusion seat (52) is always kept in contact with the bottom of the projector by the action force of the first spring (53). When the mounting holes of the projector are at the four corners, the projector can be mounted on the extrusion seat (52) by bolts.

2. The installation device for facilitating adjustment of the projection angle of a projector according to claim 1, characterized in that: The invention also comprises an extension mechanism (6), the extension mechanism (6) comprising a knob (60), a third screw rod (61), a mounting foot (62) and an anti-sliding block (63); the lower part of the rotating arc plate (471) is rotatably connected to the knob (60); the upper part of the knob (60) is threadedly connected to the third screw rod (61); the third screw rod (61) is slidably connected to the adjacent rotating arc plate (471); the lower side of the third screw rod (61) is rotatably connected to the mounting foot (62); the lower side of the mounting foot (62) is connected to the anti-sliding block (63); after the rotating arc plate (471) is placed on the ground, the mounting foot (62) contacts the ground; the anti-sliding block (63) can increase the friction between the mounting foot (62) and the ground to prevent the mounting foot (62) from moving; when it is necessary to adjust the height of the projector support, the knob (60) is rotated to move the third screw rod (61) out.

3. The installation device for facilitating adjustment of the projection angle of a projector according to claim 2, characterized in that: The knobs (60) are all provided with scratch patterns.

4. The installation device for facilitating adjustment of the projection angle of a projector according to claim 1, characterized in that: The invention also comprises a clamping mechanism (7), which comprises a fixed connecting frame (70), a second sliding rod (71), a clamping frame (72) and a second spring (73). The lower sides of the front and rear parts of the movable frame (50) are both connected to the fixed connecting frame (70). The fixed connecting frame (70) is slidably connected to two left and right second sliding rods (71). The lower sides of two adjacent second sliding rods (71) are both connected to the clamping frame (72). The second spring (73) is connected between the second sliding rods (71) and the connected fixed connecting frame (70). When the movable frame (50) moves upward, it drives the fixed connecting frame (70) to move upward, so that the clamping frame (72) contacts the sliding seat (3). Through the action force of the second spring (73), the clamping frame (72) is always in close contact with the sliding seat (3).

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

6. The installation device for facilitating adjustment of the projection angle of a projector according to claim 4, characterized in that: The invention also comprises a limiting mechanism (8), the limiting mechanism (8) comprising an alignment ring (80) and a locking sleeve (81), the outer sides of the first connecting seat (44), the rotating seat (45) and the rotating mounting seat (47) are all connected to the alignment ring (80), the outer side of the alignment ring (80) is locked with the locking sleeve (81), 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, and 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.

7. The installation device for facilitating adjustment of the projection angle of a projector according to claim 4, characterized in that: The invention also comprises a cable management mechanism (9), wherein the cable management mechanism (9) comprises a second connection seat (90), a cable management frame (91) and a torsion spring (92). The upper sides of the left and right parts of the mounting plate (1) are both connected to the second connection seat (90), and the second connection seat (90) is both rotatably connected to the cable management frame (91). The cable management frame (91) is in contact with the mounting plate (1), and the torsion spring (92) is connected between the cable management frame (91) and the connected second connection seat (90). After the projector is mounted 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 cable is placed between the cable management frame (91) and the mounting plate (1). After the placement is completed, the cable management frame (91) is released to restore the torsion spring (92), thereby driving the cable management frame (91) to reset, so that the cable management frame (91) fixes the cable on the mounting plate (1).

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

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