Digital projection equipment with protection function

Abstract

The invention relates to the technical field of digital projection equipment, in particular to digital projection equipment with a protection function, which comprises a mounting frame, a sliding plate is arranged on the outer side wall of the mounting frame through a frame body; a fixing block is arranged on one side of the outer wall of the sliding plate through a sliding block. A projection equipment body is arranged at the bottom end of the inner wall of the fixing block through a fixing rod; a motor is fixedly connected to the inner side wall of the mounting frame; a rotating shaft is arranged at the output end of the motor; a motor drives a rotating shaft to rotate, the rotating shaft drives a first bevel gear to rotate, the first bevel gear drives a second bevel gear and a first threaded rod to rotate, the first threaded rod rotates to drive a square block and a protective shell to move, the protective shell protects the projection equipment body, and when the projection equipment body is impacted and collided by the outside, the projection equipment body is prevented from being damaged. The protection shell can effectively resist external impact and collision, and can block dust and moisture, so that the safety of the projection equipment body is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of digital projection devices, and specifically to a digital projection device with a protection function. Background Art

[0002] Digital projection devices are the product of the combination of modern technology and optical principles. They are devices that use optical principles to project images or videos onto a screen through digital signal processing technology. Because they can bring a shocking visual experience and have the advantages of being intelligent and convenient, improving work efficiency, etc., they are widely used in many fields such as home entertainment, business meetings, education and training, and industrial measurement.

[0003] In the prior art, most digital projection devices do not have an external protection mechanism, making it impossible for them to effectively resist external impacts and collisions. When the digital projection device is subjected to external impacts and collisions, it is easy to cause damage to the precision components inside, resulting in economic losses. Moreover, because it does not have an external protection mechanism, dust and moisture are easily introduced into the device, thereby increasing the probability of failure of the digital projection device. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem that most digital projection devices do not have an external protection mechanism, making it impossible for them to effectively resist external impacts and collisions. When the digital projection device is subjected to external impacts and collisions, it is easy to cause damage to the precision components inside, resulting in economic losses. Moreover, because it does not have an external protection mechanism, dust and moisture are easily introduced into the device, thereby increasing the probability of failure of the digital projection device, and to propose a digital projection device with a protection function.

[0005] The purpose of the present invention can be achieved by the following technical solutions:

[0006] A digital projection device with a protection function includes a mounting frame; a sliding plate is provided on the outer side wall of the mounting frame through a frame; a fixing block is provided on one side of the outer wall of the sliding plate through a slider; a projection device body is provided at the bottom end of the inner wall of the fixing block through a fixing rod; a motor is fixedly connected to the inner side wall of the mounting frame; a rotating shaft is provided at the output end of the motor; a first bevel gear is fixedly connected to the outer side wall of the rotating shaft; a first threaded rod is rotatably connected to one side of the inner wall of the mounting frame; a second bevel gear is fixedly connected to one end of the outer wall of the first threaded rod, and the second bevel gear meshes with the first bevel gear; a square block is threadedly connected to the outer side wall of the first threaded rod; a protective shell is provided at the bottom end of the outer wall of the square block; the top end of the outer wall of the protective shell is in contact with the top end of the outer wall of the mounting frame.

[0007] As a preferred embodiment of the present invention, a chute is provided on one side of the outer wall of the frame body; the outer side wall of the sliding plate is slidably connected to the inner side wall of the chute and one side of the outer wall of the frame body; the sliding plate is in a T shape; the top end of the inner wall of the mounting frame is rotatably connected to a second threaded rod, and the bottom end of the outer wall of the second threaded rod penetrates through the sliding plate, and the second threaded rod is threadedly connected to the sliding plate; sprockets are fixedly connected to the outer side walls of the second threaded rod and the rotating shaft; a pair of the sprockets are connected by a chain.

[0008] As a preferred embodiment of the present invention, the inner side wall of the frame body is slidably connected to the outer side wall of one end of the mounting frame; the rotating shaft is a threaded rod; a threaded groove is provided on the top end of the outer wall of the frame body; the rotating shaft is matched with the threaded groove.

[0009] As a preferred embodiment of the present invention, the protective shell includes a shell body and a bottom plate; the bottom corners of the outer wall of the shell body are rotatably connected to a connecting rod; one end of the outer wall of the bottom plate is fixedly connected to the outer side wall of the connecting rod; a third gear is fixedly connected to one end of the outer wall of the connecting rod; a third rack is fixedly connected to one side of the outer wall of the mounting frame through a connecting block, and the third gear meshes with the third gear.

[0010] As a preferred embodiment of the present invention, the bottom plate includes a square shell and a square plate; the outer side wall of the square plate is slidably connected to the inner side wall of the square shell; a spring is fixedly connected to one side of the inner wall of the square shell, and one end of the outer wall of the spring is fixedly connected to one side of the outer wall of the square plate; a triangular block is fixedly connected to the bottom end of the outer wall of the projection device body, and the triangular block is matched with the bottom plate.

[0011] As a preferred embodiment of the present invention, a square groove is provided on one side of the outer wall of the sliding plate; the outer side wall of the slider is slidably connected to the inner side wall of the square groove; a reciprocating rotating rod is rotatably connected to one side of the inner wall of the square groove, and one end of the outer wall of the reciprocating rotating rod penetrates through the slider and the sliding plate; the reciprocating rotating rod is matched with the slider; a fifth gear is fixedly connected to the end of the outer wall of the reciprocating rotating rod penetrating through the sliding plate; a fifth rack is provided on one side of the outer wall of the frame body, and the fifth rack is matched with the fifth gear.

[0012] As a preferred embodiment of the present invention, one side of the outer wall of the fifth rack is slidably connected to one side of the outer wall of the frame body; a first square block is fixedly connected to one side of the outer wall of the sliding plate; a sixth threaded rod is threadedly connected to one side of the outer wall of the first square block, and one end of the outer wall of the sixth threaded rod penetrates through the first square block and is rotatably connected to one side of the outer wall of the fifth rack.

[0013] As a preferred embodiment of the present invention, one side of the outer wall of the fixed block is fixedly connected to one side of the outer wall of the slider, and the fixed block is U-shaped; the bottom end of the outer wall of the fixed rod is rotatably connected to the bottom end of the inner wall of the fixed block, and the top end of the outer wall of the fixed rod penetrates through the fixed block; an adjusting block is fixedly connected to the outer side wall of the fixed rod; one side of the outer wall of the projection device body is fixedly connected to one side of the outer wall of the adjusting block; a gear eight is fixedly connected to the top end of the outer wall of the fixed rod; a rack eight is provided at the top end of the outer wall of the slide plate, and the rack eight is matched with the gear eight.

[0014] As a preferred embodiment of the present invention, the bottom end of the outer wall of the rack eight is slidably connected to the top end of the outer wall of the slide plate; a threaded block is fixedly connected to the top end of the outer wall of the rack eight; the top end of the outer wall of the slide plate is rotatably connected to a threaded rod eight through a first square block, and one end of the outer wall of the threaded rod eight penetrates through the threaded block; the threaded rod eight is threadedly connected to the threaded block.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] 1. When the rotating shaft rotates, since the rotating shaft is a threaded rod, the rotation of the rotating shaft drives the frame to move up and down through the threaded groove on the frame. When the slide plate moves downward, the frame also moves downward. Conversely, when the slide plate and the frame move upward simultaneously, the downward movement of the frame increases the downward movement distance of the slide plate, thereby increasing the adjustment range of the projection device body. And because the slide plate and the frame move upward simultaneously, when the slide plate drives the projection device body to move upward and retract, the frame will also retract, thereby reducing the space occupied by the frame.

[0017] 2. When the slider moves reciprocally left and right, the slider drives the fixed block, the fixed rod and the gear eight on the fixed rod to move reciprocally. Since the rack eight is matched with the gear eight, when the gear eight moves reciprocally, it rotates through the rack eight, thereby driving the fixed rod to rotate left and right, and the fixed rod drives the adjusting block and the projection device body to adjust the angle left and right, thereby increasing the left and right projection ranges of the projection device body. And when the projection device needs to rotate left and right reciprocally to adjust the angle, the projection device body rotates left and right cyclically, thereby facilitating more people to see the projection image. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] For the convenience of those skilled in the art to understand, the present invention will be further described below with reference to the accompanying drawings.

[0019] Figure 1 It is the main structure diagram of the present invention;

[0020] Figure 2 It is the partial structure diagram of the main body of the present invention;

[0021] Figure 3 It is the structure diagram of the protective shell of the present invention;

[0022] Figure 4 Explosion structure diagram of the square shell and square plate of the present invention;

[0023] Figure 5 Structure diagram of the frame body, slide plate, second threaded rod and sprocket, chain of the present invention;

[0024] Figure 6 Structure diagram of the frame body, slide plate, fifth gear and fifth rack of the present invention;

[0025] Figure 7 Explosion structure diagram of the slide plate and slider of the present invention;

[0026] Figure 8 Explosion structure diagram of the fixed rod and adjusting block of the present invention.

[0027] In the figure: 1, mounting bracket; 2, frame body; 3, slide plate; 4, slider; 5, fixed block; 6, fixed rod; 7, projection device body; 8, motor; 9, rotating shaft; 10, first bevel gear; 11, first threaded rod; 12, second bevel gear; 13, square block; 14, protective shell; 15, chute; 16, second threaded rod; 17, sprocket; 18, chain; 19, thread groove; 141, housing; 142, bottom plate; 20, connecting rod; 21, third gear; 22, third rack; 143, square shell; 144, square plate; 23, spring; 24, triangular block; 25, square groove; 26, reciprocating rotating rod; 27, fifth gear; 28, fifth rack; 29, first square block; 30, sixth threaded rod; 31, adjusting block; 32, eighth gear; 33, eighth rack; 34, threaded block; 35, eighth threaded rod. Specific embodiments

[0028] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] Embodiment 1:

[0030] Please refer to Figures 1 - 7As shown in the figure, a digital projection device with a protection function includes a mounting frame 1; a sliding plate 3 is provided on the outer wall of the mounting frame 1 through a frame body 2; a fixing block 5 is provided on one side of the outer wall of the sliding plate 3 through a slider 4; a projection device body 7 is provided at the bottom end of the inner wall of the fixing block 5 through a fixing rod 6; a motor 8 is fixedly connected to the inner wall of the mounting frame 1; a rotating shaft 9 is provided at the output end of the motor 8; a first bevel gear 10 is fixedly connected to the outer wall of the rotating shaft 9; a first threaded rod 11 is rotatably connected to one side of the inner wall of the mounting frame 1; a second bevel gear 12 is fixedly connected to one end of the outer wall of the first threaded rod 11, and the second bevel gear 12 meshes with the first bevel gear 10; a square block 13 is threadedly connected to the outer wall of the first threaded rod 11; a protective case 14 is provided at the bottom end of the outer wall of the square block 13; the top end of the outer wall of the protective case 14 is in contact with the top end of the outer wall of the mounting frame 1. By driving the rotating shaft 9 to rotate through the motor 8, the rotating shaft 9 drives the first bevel gear 10 to rotate, the first bevel gear 10 drives the second bevel gear 12 and the first threaded rod 11 to rotate, the rotation of the first threaded rod 11 drives the square block 13 and the protective case 14 to move, so that the protective case 14 protects the projection device body 7. When the projection device body 7 is subjected to external impacts and collisions, the protective case 14 can effectively resist the external impacts and collisions, so that the projection device body 7 is not easily damaged, and the safety of the projection device body 7 is improved. Moreover, because the outside of the projection device body 7 is protected by the protective case 14, dust and moisture are not easily in contact with the projection device body 7, so that it is effectively protected and the probability of failure is reduced.

[0031] The protective shell 14 includes a shell 141 and a bottom plate 142; a connecting rod 20 is rotatably connected to the bottom corner of the outer wall of the shell 141; one end of the outer wall of the bottom plate 142 is fixedly connected to the outer wall of the connecting rod 20; a gear three 21 is fixedly connected to one end of the outer wall of the connecting rod 20; a rack three 22 is fixedly connected to one side of the outer wall of the mounting frame 1 through a connecting block, and the gear three 21 and the gear three 21 are meshed with each other. When the protective shell 14 moves to protect the projection device body 7, because the protective shell 14 includes a shell 141 and a bottom plate 142, when the shell 141 moves, the connecting rod 20 and the gear three 21 on the connecting rod 20 are driven to move. Because the gear three 21 and the gear three 21 are meshed with each other, when the gear three 21 moves, it rotates through the rack three 22, thereby driving the connecting rod 20 to rotate, so that the bottom plate 142 on the connecting rod 20 gradually changes its angle and moves toward the bottom of the shell 141. Because the bottom of the shell 141 is open, the projection device body 7 enters the shell 141, it is more convenient, and then the bottom plate 142 slowly moves toward the bottom of the shell 141 until it fits into the shell 141, so as to cooperate with the shell 141 to protect the projection device body 7, so that the projection device body 7 is more convenient to enter the protective shell 14, and because the projection device body 7 moves upward, the protective shell 14 moves at the same time to protect the projection device body 7, so that the device gradually rotates through the bottom plate 142, thereby closing the structure of the shell 141, so that the projection device body 7 can move a shorter distance in the shell 141, and the protective shell 14 can protect the projection device body 7, so that the volume of the structure of the protective shell 14 in the device is smaller than the volume of the integrated protective shell 14, thereby reducing the space occupied by the protective shell 14, and the volume of the protective shell 14 is reduced, and the projection device body 7 can move a shorter distance to break away from the protective shell 14 for projection, so that the preparation process or time of the projection device body 7 is reduced.

[0032] On one side of the outer wall of the housing 2, a sliding groove 15 is provided; the outer side wall of the sliding plate 3 is slidably connected to the inner side wall of the sliding groove 15 and the outer wall of the housing 2; the sliding plate 3 is in a T shape; the top end of the inner wall of the mounting frame 1 is rotatably connected to a second threaded rod 16, and the bottom end of the outer wall of the second threaded rod 16 penetrates through the sliding plate 3, and the second threaded rod 16 is threadedly connected to the sliding plate 3; both the outer side walls of the second threaded rod 16 and the rotating shaft 9 are fixedly connected with sprockets 17; a pair of sprockets 17 are connected by a chain 18. When the motor 8 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the second threaded rod 16 to rotate through the sprockets 17 and the chain 18, so that the second threaded rod 16 drives the sliding plate 3 to move up and down, and the sliding plate 3 drives the projection device body 7 to move through the slider 4, the fixing block 5 and the fixing rod 6. Cooperating with the movement of the protective shell 14, when the projection device body 7 is not in use, the projection device body 7 moves up, and the protective shell 14 moves closer to the projection device body 7 at the same time until the projection device body 7 moves to the designated position, and the protective shell 14 protects the projection device body 7, making the device more intelligent and convenient. And through the up and down movement of the projection device body 7, the height of the projection device body 7 can be more conveniently adjusted according to needs through the up and down movement of the projection device body 7, making the image projected by the projection device body 7 clearer, and facilitating the adjustment of the height of the projection device body 7 according to the actual situation, so that it can work better.

[0033] The bottom plate 142 includes a square shell 143 and a square plate 144; the outer side wall of the square plate 144 is slidably connected to the inner side wall of the square shell 143; one side of the inner wall of the square shell 143 is fixedly connected with a spring 23, and one end of the outer wall of the spring 23 is fixedly connected to one side of the outer wall of the square plate 144; the bottom end of the outer wall of the projection device body 7 is fixedly connected with a triangular block 24, and the triangular block 24 matches the bottom plate 142. Because the bottom plate 142 includes a square shell 143 and a square plate 144, the bottom plate 142 has a telescopic function. Therefore, when the projection device body 7 moves downward, if the bottom plate 142 has not been fully opened, the bottom slope of the triangular block 24 at the bottom of the projection device body 7 will encounter one end of the square plate 144. At this time, when the projection device body 7 continues to descend, the square plate 144 will contract under the extrusion of the triangular block 24 and will not block the projection device body 7, so that the projection device body 7 can be protected in a smaller space, further reducing the volume of the protective shell 14, further reducing the preparation projection process or time of the projection device body 7, and further reducing the use of materials for this device. And when the square plate 144 rotates to a certain angle, one end of the square plate 144 will encounter the top end of the inner wall of the mounting frame 1. At this time, when the square plate 144 continues to rotate, the square plate 144 will drive the spring 23 to contract, so that the square plate 144 has a longer length when the projection device body 7 needs to be protected, and when it is retracted, it is squeezed by the top end of the inner wall of the mounting frame 1 to contract and reduce its volume, so that it is not easy to get stuck with the mounting frame 1, reducing the probability of failure.

[0034] On one side of the outer wall of the skateboard 3, a square groove 25 is provided; the outer side wall of the slider 4 is slidably connected to the inner side wall of the square groove 25; one side of the inner wall of the square groove 25 is rotatably connected with a reciprocating rotating rod 26, and one end of the outer wall of the reciprocating rotating rod 26 penetrates through the slider 4 and the skateboard 3; the reciprocating rotating rod 26 is matched with the slider 4; a fifth gear 27 is fixedly connected to one end of the outer wall of the reciprocating rotating rod 26 penetrating through the outer wall of the skateboard 3; a fifth rack 28 is provided on one side of the outer wall of the frame 2, and the fifth rack 28 is matched with the fifth gear 27. When the skateboard 3 moves up and down on one side of the outer wall of the frame 2, the skateboard 3 drives the reciprocating rotating rod 26 and the fifth gear 27 to move up and down. Because the fifth rack 28 is matched with the fifth gear 27, when the fifth gear 27 moves, it rotates through the fifth rack 28, and the rotation of the fifth gear 27 drives the reciprocating rotating rod 26 to rotate, so that the reciprocating rotating rod 26 drives the slider 4 to move left and right reciprocally in the square groove 25. Thus, the slider 4 drives the projection device body 7 to move left and right reciprocally through the fixing block 5 and the fixing rod 6, making it more convenient for the device to require the projection device body 7 to move left and right reciprocally for projection, and when it is necessary to adjust the left and right position of the projection device body 7 to make the image projected by the projection device body 7 more accurate, it is also more convenient.

[0035] The inner side wall of the frame 2 is slidably connected to the outer side wall of one end of the mounting bracket 1; the rotating shaft 9 is a threaded rod; a threaded groove 19 is provided at the top of the outer wall of the frame 2; the rotating shaft 9 is matched with the threaded groove 19. When the rotating shaft 9 rotates, because the rotating shaft 9 is a threaded rod, the rotation of the rotating shaft 9 drives the frame 2 to move up and down through the threaded groove 19 on the frame 2. When the skateboard 3 moves downward, the frame 2 moves downward simultaneously. Conversely, the skateboard 3 and the frame 2 move upward simultaneously. The downward movement of the frame 2 increases the downward movement distance of the skateboard 3, thereby increasing the adjustment range of the projection device body 7. And because the skateboard 3 and the frame 2 move upward simultaneously, when the skateboard 3 drives the projection device body 7 to move upward and retract, the frame 2 will also retract, thereby reducing the space occupied area of the frame 2.

[0036] One side of the outer wall of the fifth rack 28 is slidably connected to one side of the outer wall of the frame body 2; one side of the outer wall of the slide plate 3 is fixedly connected with a first square block 29; one side of the outer wall of the first square block 29 is threadedly connected with a sixth threaded rod 30, and one end of the outer wall of the sixth threaded rod 30 penetrates through the first square block 29 and is rotatably connected to one side of the outer wall of the fifth rack 28. By rotating the sixth threaded rod 30, the sixth threaded rod 30 drives the fifth rack 28 to move. At this time, the fifth rack 28 is disengaged from the fifth gear 27. At this time, when the slide plate 3 moves up and down, the projection device body 7 will not move left and right reciprocally. When the projection device body 7 needs to move left and right reciprocally or does not need to adjust the left and right positions, it can be solved by rotating the sixth threaded rod 30. When the projection device body 7 moves to a suitable position, reverse-rotate the sixth threaded rod 30. At this time, the fifth rack 28 catches the fifth gear 27 to fix the fifth gear 27, making the projection device body 7 not easy to move. When the projection device body 7 is in use, it is not only convenient to adjust the position but also more stable. And when the position of the projection device body 7 needs to be adjusted, the projection device body 7 can be driven to move left and right reciprocally by moving the slide plate 3 downward. When the projection device body 7 moves to a suitable position, rotate the sixth threaded rod 30 to make the projection device body 7 not adjust the position left and right. When the projection device body 7 reaches a suitable height, reverse-rotate the sixth threaded rod 30 to fix the projection device body 7, making the device have multiple usage methods, so that the staff can decide which method to use to adjust the projection device body 7 according to needs.

[0037] Embodiment 2:

[0038] Please refer to Figure 2 and Figures 7 - 8 As shown, one side of the outer wall of the fixed block 5 is fixedly connected to one side of the outer wall of the slider 4, and the fixed block 5 is U-shaped; the bottom end of the outer wall of the fixed rod 6 is rotatably connected to the bottom end of the inner wall of the fixed block 5, and the top end of the outer wall of the fixed rod 6 penetrates through the fixed block 5; an adjusting block 31 is fixedly connected to the outer side wall of the fixed rod 6; one side of the outer wall of the projection device body 7 is fixedly connected to one side of the outer wall of the adjusting block 31; a gear eight 32 is fixedly connected to the top end of the outer wall of the fixed rod 6; a rack eight 33 is provided at the top end of the outer wall of the slide plate 3, and the rack eight 33 is matched with the gear eight 32. When the slider 4 moves left and right reciprocally, the slider 4 drives the fixed block 5, the fixed rod 6 and the gear eight 32 on the fixed rod 6 to move reciprocally. Because the rack eight 33 is matched with the gear eight 32, when the gear eight 32 moves reciprocally, it rotates through the rack eight 33, thereby driving the fixed rod 6 to rotate left and right, and the fixed rod 6 drives the adjusting block 31 and the projection device body 7 to adjust the angle left and right, thereby increasing the left and right side projection ranges of the projection device body 7. And when the projection device needs to rotate left and right reciprocally to adjust the angle, the projection device body 7 rotates left and right cyclically, so that more people can see the projection image.

[0039] The bottom end of the outer wall of the eighth rack 33 is slidably connected to the top end of the outer wall of the sliding plate 3; a threaded block 34 is fixedly connected to the top end of the outer wall of the eighth rack 33; the top end of the outer wall of the sliding plate 3 is rotatably connected to the eighth threaded rod 35 through the first square block, and one end of the outer wall of the eighth threaded rod 35 penetrates through the threaded block 34; the eighth threaded rod 35 is threadedly connected to the threaded block 34. By rotating the eighth threaded rod 35, the eighth threaded rod 35 drives the threaded block 34 to move, and the threaded block 34 drives the eighth rack 33 to move, so that the meshing state of the eighth rack 33 and the eighth gear 32 of the device can be adjusted. When the projection device body 7 needs to adjust the left and right angles or needs to rotate left and right reciprocally, the eighth rack 33 and the eighth gear 32 can be kept in the meshing state. When the projection device body 7 does not need to adjust the angle or the angle adjustment of the projection device body 7 is completed, the meshing state of the eighth rack 33 and the eighth gear 32 is released, so that the projection device body 7 cannot adjust the angle. When the projection device body 7 reaches the appropriate position, reverse the eighth threaded rod 35 to lock the eighth gear 32, so that the projection device body 7 is fixed, making the device more intelligent, convenient, and with more functions.

[0040] When the present invention is in use, when the projection device body 7 is idle and not in use, the motor 8 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the first bevel gear 10 to rotate, the first bevel gear 10 drives the second bevel gear 12 and the first threaded rod 11 to rotate, the rotation of the first threaded rod 11 drives the square block 13 and the protective shell 14 to move, and the protective shell 14 protects the projection device body 7. When the projection device body 7 is subjected to external impacts and collisions, the protective shell 14 can effectively resist the external impacts and collisions, so that the projection device body 7 is not easily damaged, and the safety of the projection device body 7 is improved. Moreover, because the projection device body 7 is protected by the protective shell 14 on the outside, dust and moisture are not easily in contact with the projection device body 7, so that it is effectively protected and the probability of failure is reduced.

[0041] When the motor 8 drives the rotating shaft 9 to rotate, the rotating shaft 9 drives the second threaded rod 16 to rotate through the sprocket 17 and the chain 18, the second threaded rod 16 drives the sliding plate 3 to move up and down, the sliding plate 3 drives the projection device body 7 to move through the slider 4, the fixed block 5, and the fixed rod 6. Cooperating with the movement of the protective shell 14, when the projection device body 7 is not in use, the projection device body 7 moves upward, and the protective shell 14 moves closer to the projection device body 7 at the same time until the projection device body 7 moves to the designated position, and the protective shell 14 protects the projection device body 7, making the device more intelligent and convenient. And through the up and down movement of the projection device body 7, the height of the projection device body 7 can be more conveniently adjusted according to the needs, so that the image projected by the projection device body 7 is clearer, and it is convenient for the projection device body 7 to adjust the height according to the actual situation, so that it can work better.

[0042] When the rotating shaft 9 rotates, because the rotating shaft 9 is a threaded rod, the rotation of the rotating shaft 9 drives the frame 2 to move up and down through the threaded groove 19 on the frame 2, so that when the slide plate 3 moves downward, the frame 2 moves downward at the same time, and the moving speed of the slide plate 3 is greater than the moving speed of the frame 2, so that the slide plate 3 and the frame 2 will not be relatively static. On the contrary, the slide plate 3 and the frame 2 move upward at the same time, so that the frame 2 moves downward, and the downward movement distance of the slide plate 3 is increased, thereby increasing the adjustment range of the projection device body 7. Moreover, because the slide plate 3 and the frame 2 move upward at the same time, when the slide plate 3 drives the projection device body 7 to move up and fold up, the frame 2 will also be folded, thereby reducing the space occupied by the frame 2.

[0043] When the protective shell 14 moves to protect the projection device body 7, because the protective shell 14 includes a shell 141 and a bottom plate 142, when the shell 141 moves, it drives the connecting rod 20 and the gear three 21 on the connecting rod 20 to move. Because the gear three 21 and the gear three 21 are meshed with each other, the gear three 21 moves through the rack three 22 to rotate, thereby driving the connecting rod 20 to rotate, so that the bottom plate 142 on the connecting rod 20 gradually changes its angle and moves toward the bottom of the shell 141. Because the bottom of the shell 141 is open, it is more convenient for the projection device body 7 to enter the shell 141. Then the bottom plate 142 slowly moves toward the bottom of the shell 141 until it fits into the shell 141, thereby cooperating with the shell 141 to protect the projection device body 7, so that the projection device body 7 can be projected. The device body 7 is easier to enter the protective shell 14, and because the projection device body 7 moves upward, the protective shell 14 moves at the same time to protect the projection device body 7, so that the device gradually rotates through the bottom plate 142, thereby closing the structure of the shell 141, and the projection device body 7 can move a shorter distance in the shell 141, and the protective shell 14 can protect the projection device body 7, so that the volume of the structure of the protective shell 14 in the device is smaller than the volume of the integrated protective shell 14, thereby reducing the space occupied by the protective shell 14, and reducing the volume of the protective shell 14, and also allowing the projection device body 7 to move a shorter distance to detach from the protective shell 14 for projection, so that the preparation process or time of the projection device body 7 is reduced.

[0044] Since the bottom plate 142 includes a square shell 143 and a square plate 144, the bottom plate 142 has a telescopic function. When the projection device body 7 moves downward, if the bottom plate 142 has not been fully opened, the bottom slope of the triangular block 24 at the bottom of the projection device body 7 will encounter one end of the square plate 144. At this time, when the projection device body 7 continues to descend, the square plate 144 will contract under the extrusion of the triangular block 24 and will not jam the projection device body 7, so that the projection device body 7 can be protected in a smaller space, further reducing the volume of the protective shell 14, further reducing the preparation projection process or time of the projection device body 7, and further reducing the use of materials in this device. When the square plate 144 rotates to a certain angle, one end of the square plate 144 will encounter the top end of the inner wall of the mounting frame 1. At this time, when the square plate 144 continues to rotate, the square plate 144 will drive the spring 23 to contract, so that the square plate 144 has a longer length when the projection device body 7 needs to be protected, and when it is retracted, it is squeezed by the top end of the inner wall of the mounting frame 1 to contract and reduce its volume, so that it is not easy to jam with the mounting frame 1 and reduces the probability of failure.

[0045] When the slide plate 3 moves up and down on one side of the outer wall of the frame body 2, the slide plate 3 drives the reciprocating rotating rod 26 and the fifth gear 27 to move up and down. Since the fifth rack 28 is matched with the fifth gear 27, when the fifth gear 27 moves, it rotates through the fifth rack 28, and the rotation of the fifth gear 27 drives the reciprocating rotating rod 26 to rotate, and the reciprocating rotating rod 26 drives the slider 4 to move left and right reciprocally in the square groove 25, so that the slider 4 drives the projection device body 7 to move left and right reciprocally through the fixing block 5 and the fixing rod 6, making it more convenient for this device to project when the projection device body 7 needs to move left and right reciprocally, and it is also more convenient to adjust the left and right positions of the projection device body 7 to make the image projected by the projection device body 7 more accurate.

[0046] By rotating the sixth threaded rod 30, the sixth threaded rod 30 drives the fifth rack 28 to move. At this time, the fifth rack 28 is disengaged from the fifth gear 27. When the sliding plate 3 moves up and down, the projection device body 7 will not move reciprocally left and right. When the projection device body 7 needs to move reciprocally left and right or does not need to adjust the left and right positions, it can be solved by rotating the sixth threaded rod 30. When the projection device body 7 moves to a suitable position, reverse-rotate the sixth threaded rod 30. At this time, the fifth rack 28 catches the fifth gear 27 to fix the fifth gear 27, making the projection device body 7 not easy to move. When the projection device body 7 is in use, it is not only convenient to adjust the position but also more stable. And when the position of the projection device body 7 needs to be adjusted, the projection device body 7 can be driven to move reciprocally left and right by moving the sliding plate 3 downward. When the projection device body 7 moves to a suitable position, rotate the sixth threaded rod 30 to prevent the projection device body 7 from adjusting its position left and right. When the projection device body 7 reaches a suitable height, reverse-rotate the sixth threaded rod 30 to fix the projection device body 7. This device has multiple usage methods, enabling the staff to decide which method to use to adjust the projection device body 7 according to their needs.

[0047] When the slider 4 moves reciprocally left and right, the slider 4 drives the fixed block 5, the fixed rod 6, and the eighth gear 32 on the fixed rod 6 to move reciprocally. Since the eighth rack 33 matches the eighth gear 32, when the eighth gear 32 moves reciprocally, it rotates through the eighth rack 33, thereby driving the fixed rod 6 to rotate left and right. The fixed rod 6 drives the adjusting block 31 and the projection device body 7 to adjust the angle left and right, thereby increasing the left and right projection ranges of the projection device body 7. And when the projection device needs to rotate reciprocally left and right to adjust the angle, the projection device body 7 rotates in a left and right cycle, making it easier for more people to see the projection image.

[0048] By rotating the eighth threaded rod 35, the eighth threaded rod 35 drives the threaded block 34 to move, and the threaded block 34 drives the eighth rack 33 to move, so that the meshing state of the eighth rack 33 and the eighth gear 32 of this device can be adjusted. When the projection device body 7 needs to adjust the left and right angles or needs to rotate reciprocally left and right, the eighth rack 33 and the eighth gear 32 can be kept in the meshing state. When the projection device body 7 does not need to adjust the angle or the angle adjustment of the projection device body 7 is completed, the meshing state of the eighth rack 33 and the eighth gear 32 is released, making the projection device body 7 unable to adjust the angle. When the projection device body 7 reaches a suitable position, reverse-rotate the eighth threaded rod 35 to catch the eighth gear 32 to fix the projection device body 7, making this device more intelligent, convenient, and with more functions.

[0049] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to only the specific implementation manners. Obviously, according to the content of this specification, many modifications and variations can be made. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can well understand and utilize the present invention. The present invention is only limited by the claims and their full scope and equivalents.

Claims

1. A digital projection device with a protective function, comprising a mounting frame (1); a slide plate (3) is provided on the outer wall of the mounting frame (1) through a frame (2); a fixing block (5) is provided on one side of the outer wall of the slide plate (3) through a slider (4); a projection device body (7) is provided at the bottom end of the inner wall of the fixing block (5) through a fixing rod (6); a motor (8) is fixedly connected to the inner wall of the mounting frame (1); a rotating shaft (9) is provided at the output end of the motor (8); and the characteristics are as follows: The outer wall of the rotating shaft (9) is fixedly connected with a bevel gear 1 (10); one side of the inner wall of the mounting frame (1) is rotatably connected with a threaded rod 1 (11); one end of the outer wall of the threaded rod 1 (11) is fixedly connected with a bevel gear 2 (12), and the bevel gear 2 (12) and the bevel gear 1 (10) are meshed with each other; the outer wall of the threaded rod 1 (11) is threadedly connected with a square block (13); the bottom end of the outer wall of the square block (13) is provided with a protective shell (14); the top end of the outer wall of the protective shell (14) is in contact with the top end of the outer wall of the mounting frame (1).

2. The digital projection device with protection function according to claim 1, characterized in that: A slide groove (15) is provided on one side of the outer wall of the frame (2); the outer wall of the slide plate (3) is slidably connected to the inner wall of the slide groove (15) and one side of the outer wall of the frame (2); the slide plate (3) is in a T shape; the top end of the inner wall of the mounting frame (1) is rotatably connected to a second threaded rod (16), and the bottom end of the outer wall of the second threaded rod (16) passes through the slide plate (3), and the second threaded rod (16) is threadedly connected to the slide plate (3); the second threaded rod (16) and the outer wall of the rotating shaft (9) are both fixedly connected to a sprocket (17); a pair of the sprockets (17) are connected by a chain (18).

3. The digital projection device with protection function according to claim 1, characterized in that: The inner side wall of the frame (2) is slidably connected to the outer side wall of one end of the mounting frame (1); the rotating shaft (9) is a threaded rod; a thread groove (19) is provided at the top end of the outer wall of the frame (2); and the rotating shaft (9) matches the thread groove (19).

4. The digital projection device with protection function according to claim 1, characterized in that: The protective shell (14) comprises a shell (141) and a bottom plate (142); a connecting rod (20) is rotatably connected at the bottom corner of the outer wall of the shell (141); one end of the outer wall of the bottom plate (142) is fixedly connected to the outer wall of the connecting rod (20); one end of the outer wall of the connecting rod (20) is fixedly connected to a gear three (21); one side of the outer wall of the mounting frame (1) is fixedly connected to a rack three (22) via a connecting block, and the gear three (21) and the gear three (21) are meshed with each other.

5. The digital projection device with protection function according to claim 4, characterized in that: The bottom plate (142) comprises a square shell (143) and a square plate (144); the outer side wall of the square plate (144) is slidably connected to the inner side wall of the square shell (143); a spring (23) is fixedly connected to one side of the inner wall of the square shell (143), and one end of the outer wall of the spring (23) is fixedly connected to one side of the outer wall of the square plate (144); a triangular block (24) is fixedly connected to the bottom end of the outer wall of the projection device body (7), and the triangular block (24) matches the bottom plate (142).

6. The digital projection device with protection function according to claim 1, characterized in that: A square groove (25) is provided on one side of the outer wall of the slide plate (3); the outer wall of the slider (4) is slidably connected to the inner wall of the square groove (25); a reciprocating rod (26) is rotatably connected to one side of the inner wall of the square groove (25), and one end of the outer wall of the reciprocating rod (26) passes through the slider (4) and the slide plate (3); the reciprocating rod (26) matches the slider (4); one end of the reciprocating rod (26) passing through the outer wall of the slide plate (3) is fixedly connected to a gear five (27); a rack five (28) is provided on one side of the outer wall of the frame body (2), and the rack five (28) matches the gear five (27).

7. The digital projection device with protection function according to claim 6, characterized in that: One side of the outer wall of the rack gear five (28) is slidably connected to one side of the outer wall of the frame (2); one side of the outer wall of the slide plate (3) is fixedly connected to a block one (29); one side of the outer wall of the block one (29) is threadedly connected to a threaded rod six (30), and one end of the outer wall of the threaded rod six (30) passes through the block one (29) and is rotatably connected to one side of the outer wall of the rack gear five (28).

8. The digital projection device with protection function according to claim 7, characterized in that: One side of the outer wall of the fixed block (5) is fixedly connected to one side of the outer wall of the sliding block (4), and the fixed block (5) is in a U shape; the bottom end of the outer wall of the fixed rod (6) is rotatably connected to the bottom end of the inner wall of the fixed block (5), and the top end of the outer wall of the fixed rod (6) passes through the fixed block (5); the outer wall of the fixed rod (6) is fixedly connected to an adjustment block (31); one side of the outer wall of the projection device body (7) is fixedly connected to one side of the outer wall of the adjustment block (31); the top end of the outer wall of the fixed rod (6) is fixedly connected to a gear eight (32); the top end of the outer wall of the sliding plate (3) is provided with a rack eight (33), and the rack eight (33) matches the gear eight (32).

9. The digital projection device with protection function according to claim 8, characterized in that: The bottom end of the outer wall of the rack eight (33) is slidably connected to the top end of the outer wall of the slide plate (3); the top end of the outer wall of the rack eight (33) is fixedly connected to a threaded block (34); the top end of the outer wall of the slide plate (3) is rotatably connected to a threaded rod eight (35) through a first block, and one end of the outer wall of the threaded rod eight (35) passes through the threaded block (34); the threaded rod eight (35) is threadedly connected to the threaded block (34).

Images