Exhibition hall projection demonstration device

Abstract

The utility model discloses an exhibition hall projection demonstration device which comprises a shielding assembly, a moving assembly and an adjusting assembly, the shielding assembly is used for covering and shielding projection equipment, and the moving assembly is arranged in the shielding assembly and used for moving and unfolding projection. The adjusting assembly is arranged on the moving assembly and used for adjusting the projection angle, the moving assembly comprises two mounting frames, a connecting plate, a toothed plate, a rotating rod, a motor and a gear, the two mounting frames are both arranged in the shielding assembly, the connecting plate is fixedly mounted on the two mounting frames, and the toothed plate is arranged on the rotating rod. The toothed plates are fixedly mounted on the inner walls of the tops of the corresponding mounting frames, the rotating rods are arranged on the shielding assembly, the motors are arranged on the outer wall of the shielding assembly, and output shafts of the motors are fixedly connected with one ends of the rotating rods. The exhibition hall projection demonstration device provided by the utility model has the advantages that the projection equipment can be conveniently shielded and unfolded, and dust is prevented from being adsorbed to shield a lens when the projection equipment is idle.

Description

Technical Field

[0001] The utility model relates to the technical field of projection, in particular to an exhibition hall projection demonstration device. Background Art

[0002] Projection equipment is an optical instrument that uses optical elements to magnify the outline of a workpiece and project it onto a screen. It can use transmitted light for contour measurement, and can also use reflected light to measure the surface shape of blind holes and observe the surface of parts. Projection equipment, also known as a projector, is a device that can project images or videos onto a screen, and can be connected to a computer through different interfaces to play the corresponding video signal. Projection equipment is currently widely used in homes, offices, schools and entertainment venues, and there are different types depending on the working method.

[0003] After searching, in the prior art, Chinese patent application No.: 202222571118.2, application date: 2022.09.27, discloses a digital exhibition hall projection demonstration device, including a fixed plate, a fixed rod, a moving rod, a height adjustment component and an angle adjustment component, the fixed rod is arranged below the fixed plate, the moving rod is arranged on one side of the fixed rod, the height adjustment component is arranged inside the fixed rod and the moving rod, and the angle adjustment component is arranged at the bottom of the moving rod; the height adjustment component includes a positioning groove, a positioning hole, a first sliding plate, a top rod and a first spring; the bottom of the fixed plate is fixedly connected with the fixed rod, one side of the fixed rod is provided with a positioning groove, and the inside of the positioning groove is provided with positioning holes at equal distances. Its beneficial effect is that by setting the height adjustment component, the height of the projection device can be adjusted, so that the device can be adjusted to a more suitable height for projection, and by setting the angle adjustment component, the angle of projection of the device can be adjusted, so that the device can be adjusted to a more suitable angle for projection.

[0004] However, the above structure still has some shortcomings. The air is mixed with dust and impurities. When the projection equipment is idle and not performing projection work, it will be hung in the exhibition hall. The dust and impurities will be adsorbed on the projection equipment and the projection lens, affecting the subsequent projection effect. Summary of the invention

[0005] The purpose of the utility model is to provide an exhibition hall projection demonstration device, which can conveniently cover and unfold the projection equipment and prevent dust from absorbing and covering the lens when idle, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a kind of exhibition hall projection demonstration device, comprising a shielding component, a moving component and an adjusting component, the shielding component is used to cover and shield the projection equipment, the moving component is arranged in the shielding component for moving and expanding the projection, the adjusting component is arranged on the moving component for adjusting the projection angle, the moving component comprises two mounting frames, a connecting plate, a tooth plate, a rotating rod, a motor and a gear, the two mounting frames are both arranged in the shielding component, the connecting plate is fixedly mounted on the two mounting frames, the tooth plate is fixedly mounted on the top inner wall of the corresponding mounting frame, the rotating rod is arranged on the shielding component, the motor is arranged on the outer wall of the shielding component, the output shaft of the motor is fixedly connected to one end of the rotating rod, the gear is fixedly mounted on one end of the rotating rod, and the gear and the tooth plate are meshed with each other.

[0007] Furthermore, pads are fixedly mounted on the tops of the two mounting frames, and rubber plates are fixedly mounted on the tops of the two pads.

[0008] Furthermore, the shielding assembly includes a fixed plate, a cover and a connecting rod, the cover is fixedly installed on the bottom of the fixed plate, the connecting rod is fixedly installed on the top of the fixed plate, the rotating rod is rotatably connected to the cover, and the motor is fixedly connected to the cover.

[0009] Furthermore, a slide plate is fixedly mounted on an inner wall of one side of the enclosure, and a slide bar is fixedly mounted on an inner wall of the bottom of the corresponding mounting frame, and the slide bar is slidably connected to the slide plate.

[0010] Furthermore, the adjustment assembly includes two mounting blocks, two cylinders, a placement plate, a projector and two electric telescopic rods, the two mounting blocks are respectively fixedly mounted on the two mounting blocks, the two cylinders are respectively rotatably mounted on the two mounting blocks, the placement plate is fixedly mounted on the two cylinders, the projector is arranged on the placement plate, the two electric telescopic rods are both hingedly mounted on the connecting plate, and the two electric telescopic rods are both hingedly connected to the placement plate.

[0011] Furthermore, two L-shaped plates are fixedly mounted on the placement plate, and both of the two L-shaped plates are fixedly connected to the projector.

[0012] In summary, due to the adoption of the above technology, the beneficial effects of the utility model are:

[0013] The utility model sets a moving component, starts a motor, the motor drives the gear to rotate, the gear and the toothed plate are meshed for transmission, the toothed plate moves, the toothed plate drives the mounting frame to move, the mounting frame drives the connecting plate to move, the mounting frame drives the projection device to move down and unfold to perform projection work, so that the projection device can be conveniently shielded and unfolded, and dust can be prevented from being absorbed and shielding the lens when idle.

[0014] The utility model sets an adjustment component, starts the electric telescopic rod, extends the electric telescopic rod, drives the placement plate to flip and move, the placement plate drives the cylinder to rotate, the cylinder rotates on the installation block, and the placement plate drives the projector to flip and tilt, so as to facilitate the adjustment of the projection angle of the projection device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the overall structure of an exhibition hall projection demonstration device of the utility model;

[0016] Figure 2 This is a schematic diagram of the main cross-sectional structure of an exhibition hall projection demonstration device of the utility model;

[0017] Figure 3 For the utility model Figure 2 A schematic diagram of the enlarged structure of part A;

[0018] Figure 4 The utility model is a schematic diagram of a cross-sectional structure of a projection demonstration device for an exhibition hall.

[0019] In the figure: 1. Shielding assembly; 101. Fixed plate; 102. Enclosure; 103. Connecting rod; 2. Moving assembly; 201. Mounting frame; 202. Connecting plate; 203. Tooth plate; 204. Rotating rod; 205. Motor; 206. Gear; 3. Adjusting assembly; 301. Mounting block; 302. Cylinder; 303. Placement plate; 304. Projector; 305. Electric telescopic rod. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the utility model.

[0021] The utility model provides Figure 1-4As shown, a projection demonstration device for an exhibition hall includes a shielding component 1, a moving component 2 and an adjusting component 3. The shielding component 1 is used to cover and shield the projection device. The moving component 2 is arranged in the shielding component 1 for moving and unfolding the projection. The adjusting component 3 is arranged on the moving component 2 for adjusting the projection angle. The moving component 2 includes two mounting frames 201, a connecting plate 202, a tooth plate 203, a rotating rod 204, a motor 205 and a gear 206. The two mounting frames 201 are both arranged in the shielding component 1. The connecting plate 202 is fixedly installed on the two mounting frames 201. The tooth plate 203 is fixedly installed on the top inner wall of the corresponding mounting frame 201. The rotating rod 204 is arranged on the shielding component 1, the motor 205 is arranged on the outer wall of the shielding component 1, the output shaft of the motor 205 is fixedly connected to one end of the rotating rod 204, the gear 206 is fixedly installed on one end of the rotating rod 204, and the gear 206 is meshed with the toothed plate 203. More specifically, the motor 205 is started, the motor 205 drives the gear 206 to rotate, the gear 206 is meshed with the toothed plate 203 for transmission, the toothed plate 203 moves, the toothed plate 203 drives the mounting frame 201 to move, the mounting frame 201 drives the connecting plate 202 to move, and the mounting frame 201 drives the projection device to move down and unfold for projection, so as to facilitate the shielding and unfolding of the projection device and prevent the dust from being absorbed and shielding the lens when idle.

[0022] In addition, pads are fixedly mounted on the tops of the two mounting frames 201 , and rubber plates are fixedly mounted on the tops of the two pads.

[0023] like Figure 1 As shown, the shielding assembly 1 includes a fixed plate 101, a cover 102 and a connecting rod 103, the cover 102 is fixedly installed on the bottom of the fixed plate 101, the connecting rod 103 is fixedly installed on the top of the fixed plate 101, the rotating rod 204 is rotatably connected to the cover 102, and the motor 205 is fixedly connected to the cover 102.

[0024] In addition, a slide plate is fixedly installed on the inner wall of one side of the enclosure 102, and a slide bar is fixedly installed on the corresponding bottom inner wall of the mounting frame 201. The slide bar is slidably connected to the slide plate. More specifically, when the mounting frame 201 moves downward, the mounting frame 201 drives the slide bar to move downward, and the slide bar slides on the slide plate, which facilitates the linkage and synchronous movement to prevent skewing during movement.

[0025] like Figure 1As shown, in some embodiments, the adjustment component 3 includes two mounting blocks 301, two cylinders 302, a placement plate 303, a projector 304 and two electric telescopic rods 305, the two mounting blocks 301 are respectively fixedly mounted on the two mounting blocks 301, the two cylinders 302 are respectively rotatably mounted on the two mounting blocks 301, the placement plate 303 is fixedly mounted on the two cylinders 302, the projector 304 is arranged on the placement plate 303, the two electric telescopic rods 305 are both hingedly mounted on the connecting plate 202, and the two electric telescopic rods 305 are both hingedly connected to the placement plate 303. More specifically, the electric telescopic rod 305 is started, the electric telescopic rod 305 is extended, the electric telescopic rod 305 drives the placement plate 303 to flip and move, the placement plate 303 drives the cylinder 302 to rotate, the cylinder 302 rotates on the mounting block 301, and the placement plate 303 drives the projector 304 to flip and tilt, so as to facilitate the adjustment of the projection angle of the projection device.

[0026] In some embodiments, two L-shaped plates are fixedly mounted on the placement plate 303 , and both of the two L-shaped plates are fixedly connected to the projector 304 .

[0027] Working principle:

[0028] Step 1: Move and unfold, start the motor 205, the motor 205 drives the gear 206 to rotate, the gear 206 engages with the toothed plate 203 for transmission, the toothed plate 203 moves, the toothed plate 203 drives the mounting bracket 201 to move, the mounting bracket 201 drives the connecting plate 202 to move, the mounting bracket 201 drives the projector 304 to move downward, when the projector 304 moves out of the enclosure 102, stop the motor 205, and the move and unfold is completed.

[0029] Step 2: Rotation adjustment, start the electric telescopic rod 305, the electric telescopic rod 305 extends, the electric telescopic rod 305 drives the placement plate 303 to flip and move, the placement plate 303 drives the cylinder 302 to rotate, the cylinder 302 rotates on the mounting block 301, the placement plate 303 drives the projector 304 to flip and tilt, when the projector 304 flips and moves to a suitable projection angle, stop the electric telescopic rod 305, and the rotation adjustment is completed.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

Claims

1. An exhibition hall projection demonstration device, comprising a shielding component, a moving component and an adjusting component, Features: The shielding assembly is used to cover and shield the projection equipment, the moving assembly is arranged in the shielding assembly for moving and expanding the projection, the adjusting assembly is arranged on the moving assembly for adjusting the projection angle, the moving assembly includes two mounting frames, a connecting plate, a tooth plate, a rotating rod, a motor and a gear, the two mounting frames are both arranged in the shielding assembly, the connecting plate is fixedly mounted on the two mounting frames, the tooth plate is fixedly mounted on the top inner wall of the corresponding mounting frame, the rotating rod is arranged on the shielding assembly, the motor is arranged on the outer wall of the shielding assembly, the output shaft of the motor is fixedly connected to one end of the rotating rod, the gear is fixedly mounted on one end of the rotating rod, and the gear and the tooth plate are meshed with each other.

2. The exhibition hall projection demonstration device according to claim 1, Features: Pads are fixedly mounted on the tops of the two mounting frames, and rubber plates are fixedly mounted on the tops of the two pads.

3. The exhibition hall projection demonstration device according to claim 1, Features: The shielding assembly includes a fixed plate, a cover and a connecting rod, the cover is fixedly installed on the bottom of the fixed plate, the connecting rod is fixedly installed on the top of the fixed plate, the rotating rod is rotatably connected to the cover, and the motor is fixedly connected to the cover.

4. The exhibition hall projection demonstration device according to claim 3, Features: A slide plate is fixedly mounted on one inner wall of the enclosure, and a slide bar is fixedly mounted on the corresponding bottom inner wall of the mounting frame, and the slide bar is slidably connected to the slide plate.

5. The exhibition hall projection demonstration device according to claim 1, Features: The adjustment assembly includes two mounting blocks, two cylinders, a placement plate, a projector and two electric telescopic rods. The two mounting blocks are fixedly mounted on the two mounting blocks, respectively. The two cylinders are rotatably mounted on the two mounting blocks, respectively. The placement plate is fixedly mounted on the two cylinders. The projector is arranged on the placement plate. The two electric telescopic rods are both hingedly mounted on the connecting plate, and the two electric telescopic rods are both hingedly connected to the placement plate.

6. The exhibition hall projection demonstration device according to claim 5, Features: Two L-shaped plates are fixedly installed on the placement plate, and both of the two L-shaped plates are fixedly connected to the projector.

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