Projection equipment for education

Abstract

Projection equipment for education comprises a mounting rod, a sliding rod is slidably connected to the interior of the mounting rod, an adjusting mechanism is mounted on the outer side of the mounting rod and comprises a rotating ring, the rotating ring is rotatably connected to the outer side of the mounting rod through a bearing, and two sets of connecting rods are fixedly connected to the upper end of the rotating ring; the top end of the connecting rod is fixedly connected with a protection mechanism, the protection mechanism comprises a protection cover, and the sliding rod is movably connected with the protection cover. By arranging the protection mechanism, the projector can move to the upper end of the protection cover for projection operation during use, after use, a sliding rod drives a supporting plate to enable the projector to move into the protection cover, and a toothed plate and a gear cooperate with each other to drive a protection plate to close the upper end of the protection cover. The projector is located in a closed space, and external humid air and dust are prevented from entering the projector to damage the projector.

Description

Technical Field

[0001] The utility model relates to the field of educational equipment, in particular to a projection device for education. Background Art

[0002] With the continuous progress of society, my country's scientific and technological level is constantly improving. Projection equipment will be needed in education and teaching. The projection equipment can project the images needed for teaching onto the projection cloth, which can better carry out teaching. Therefore, a special projection equipment that is easy to assemble for education and teaching will be used.

[0003] Chinese patent CN214474380U discloses an educational projection device, which belongs to the technical field of projection devices. It includes a body, an outer frame is provided on one side of the body, a heat dissipation port is provided on one side of the outer frame, a projection head is provided on one side of the heat dissipation port, a flash lamp is provided on one side of the projection head, a rotating head device is provided at the rear end of the projection head, a light port is provided on one side of the rotating head device, a control button is provided on one side of the light port, and a fixed button is provided on one side of the body. After the rotating head device passes through the projector, the projection angle of the projector lens can be properly fine-tuned as needed, so that the projected image is consistent with the screen, and the quality of the image is not affected. The lifting base device at the lower end can facilitate the adjustment of the base when the projector is on a horizontal desktop, and can be adjusted according to the incompleteness of the image, so that the image and the screen are uniformly matched, and the position of the projector can be adjusted at any time.

[0004] However, the above-mentioned equipment is difficult to protect the projector, resulting in the projector being exposed to the outside for a long time. Moist air and dust can easily enter the interior of the projector, causing damage to the internal components of the machine, reducing the service life of the projector, making it inconvenient to use, and causing property losses. Utility Model Content

[0005] In order to solve the above-mentioned technical problems, an educational projection device is provided. This technical solution solves the problem that it is difficult to protect the projector, resulting in the projector being exposed to the outside for a long time, and humid air and dust can easily enter the interior of the projector, causing damage to the internal components of the machine, inconvenience in use, and leading to property loss.

[0006] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0007] A projection device for educational use comprises a mounting rod, wherein a slide rod is slidably connected to the inside of the mounting rod, an adjustment mechanism is installed on the outside of the mounting rod, the adjustment mechanism comprises a rotating ring, the rotating ring is rotatably connected to the outside of the mounting rod through a bearing, two groups of connecting rods are fixedly connected to the upper end of the rotating ring, the top end of the connecting rod is fixedly connected to a protective mechanism, the protective mechanism comprises a protective cover, the slide rod is movably connected to the protective cover, the top end of the slide rod extends to the inside of the protective cover and is rotatably connected to a support plate, and a projector is fixedly installed on the upper end of the support plate.

[0008] Preferably, at least three groups of first hinged seats are fixedly connected to the lower end of the mounting rod, a first connecting rod is hinged inside the first hinged seat, and the lower end of the first connecting rod is fixedly connected to a base.

[0009] Preferably, the lower end of the sliding rod extends to the lower end of the mounting rod and is fixedly connected to a third hinged seat, a second connecting rod is hinged inside the third hinged seat, a second connecting rod is hinged at the end of the second connecting rod, and the second hinged seat is fixedly connected to the middle part of the first connecting rod.

[0010] Preferably, the protection mechanism further comprises two groups of protection plates, both ends of the protection plates are fixedly connected with rotating shafts, the protection plates are rotatably connected to the inner wall of the protection cover via the rotating shafts, and the outer side of the rotating shafts is fixedly connected with gears.

[0011] Preferably, two groups of fixing frames are fixedly connected to the upper end of the support plate, a tooth plate is fixedly connected to the outer upper end of the fixing frame, and a top block is fixedly connected to the middle part of the upper end of the fixing frame.

[0012] Preferably, the internal thread of the rotating ring is connected to a screw rod, and the end of the screw rod is fixedly connected to a fixed handle.

[0013] Compared with the prior art, the beneficial effects of the present invention are as follows: by setting up a protective mechanism, the projector can be moved to the upper end of the protective cover for projection operation when in use; after use, the support plate is driven by the slide rod to move the projector to the inside of the protective cover, and the upper end of the protective cover is closed by driving the protective plate through the cooperation of the toothed plate and the gear, so that the projector is in a closed space, preventing external humid air and dust from entering the interior of the projector and causing damage thereto; through the linkage of multiple sets of first connecting rods and second connecting rods, the slide rod moves up and down inside the mounting rod, thereby driving the projector to move up and down; when multiple sets of first connecting rods are unfolded, they can support the whole and move the projector to the upper end of the protective cover for projection; when multiple sets of first connecting rods are folded, the projector is moved into the protective cover for protection; it is simple and convenient, quick to use, and has a good protective effect, which is beneficial to increasing the service life of the projector. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the protection mechanism structure of the utility model;

[0016] Figure 3 This is a schematic diagram of the structure of the utility model in a folded state;

[0017] Figure 4 It is a schematic diagram of the structure of the regulating mechanism of the utility model.

[0018] The numbers in the figure are:

[0019] 1. Mounting rod; 101. Sliding rod; 102. First connecting rod; 103. First hinge seat; 104. Second connecting rod; 105. Base; 106. Second hinge seat; 107. Third hinge seat;

[0020] 2. Protective mechanism; 201. Protective cover; 202. Projector; 203. Protective plate; 204. Rotating shaft; 205. Gear; 206. Fixed frame; 207. Tooth plate; 208. Support plate; 209. Top block;

[0021] 3. Adjusting mechanism; 301. Rotating ring; 302. Connecting rod; 303. Screw rod; 304. Fixed handle. DETAILED DESCRIPTION

[0022] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0023] Example 1

[0024] Please refer to Figure 1-4 As shown, an educational projection device includes a mounting rod 1, a sliding rod 101 is slidably connected inside the mounting rod 1, an adjusting mechanism 3 is installed on the outside of the mounting rod 1, the adjusting mechanism 3 includes a rotating ring 301, the rotating ring 301 is rotatably connected to the outside of the mounting rod 1 through a bearing, two groups of connecting rods 302 are fixedly connected to the upper end of the rotating ring 301, the top of the connecting rod 302 is fixedly connected to the protective cover 201, the protective mechanism 2 includes a protective cover 201, the sliding rod 101 is movably connected to the protective cover 201, the top of the sliding rod 101 extends to the inside of the protective cover 201 and is rotatably connected to a support plate 208, and the upper end of the support plate 208 is fixedly installed with a projector 202.

[0025] In this solution, the projector 202 is electrically connected to an external power source, and the slide bar 101 can slide inside the mounting rod 1. When the projector 202 is not used, the slide bar 101 can be moved downward to drive the support plate 208 so that the projector 202 is moved to the inside of the protective cover 201 for protection to prevent external dust and humid air from entering the projector 202 and causing damage to it, thereby increasing the service life of the projector 202. When in use, the slide bar 101 can be moved upward to drive the support plate 208 to push the projector 202 out of the protective cover 201 for projection, and the rotating ring 301 can be rotated to make the connecting rod 302 drive the protective cover 201 to rotate, thereby driving the support plate 208 to rotate the projector 202, and the direction of projection can be adjusted according to the required projection direction.

[0026] Example 2

[0027] Please refer to Figure 1-3 As shown, at least three groups of first hinge seats 103 are fixedly connected to the lower end of the mounting rod 1 , the first hinge seats 103 are hinged with first connecting rods 102 inside, and the lower end of the first connecting rod 102 is fixedly connected to a base 105 .

[0028] The lower end of the slide rod 101 extends to the lower end of the mounting rod 1 and is fixedly connected to a third hinge seat 107. The interior of the third hinge seat 107 is hinged with a second connecting rod 104. The end of the second connecting rod 104 is hinged with a second hinge seat 106. The second hinge seat 106 is fixedly connected to the middle of the first connecting rod 102.

[0029] In the present solution, multiple first connecting rods 102 are supported by the base 105 when they are deployed outward. When the projector 202 is not used and is to be protected, the first connecting rod 102 is rotated toward the axial position of the mounting rod 1 with the first hinge seat 103 as the center, thereby driving the second connecting rod 104 through the second hinge seat 106 so that the third hinge seat 107 moves the slide bar 101 downward, thereby moving the support plate 208 downward, and moving the projector 202 to the inside of the protective cover 201. When the projector 202 needs to be used, the first connecting rod 102 is pulled toward the outside of the mounting rod 1, thereby driving the slide bar 101 to move upward inside the mounting rod 1 through the second connecting rod 104, so that the support plate 208 moves upward to push the projector 202 out to the upper end of the protective cover 201. This is simple, practical, convenient and fast.

[0030] Example 3

[0031] Please refer to Figure 2 As shown, the protection mechanism 2 also includes two groups of protection plates 203 , both ends of the protection plates 203 are fixedly connected with rotating shafts 204 , the protection plates 203 are rotatably connected to the inner wall of the protection cover 201 through the rotating shafts 204 , and the outer side of the rotating shafts 204 is fixedly connected with gears 205 .

[0032] The upper end of the support plate 208 is fixedly connected to two sets of fixing frames 206 , the outer upper end of the fixing frame 206 is fixedly connected to a tooth plate 207 , and the middle part of the upper end of the fixing frame 206 is fixedly connected to a top block 209 .

[0033] In this solution, the fixing frame 206 can fix and clamp the projector 202 to prevent the projector 202 from shaking. When the support plate 208 moves downward, the toothed plate 207 on the fixing frame 206 engages with the gear 205 and drives the gear 205 to rotate the shaft 204, thereby driving the protective plate 203 to rotate and close the upper end of the protective cover 201, so that the projector 202 is in a closed space to protect it. When the projector 202 is used, the support plate 208 drives the fixing frame 206 to move upward, so that the top block 209 abuts against the protective plate 203, and as the support plate 208 moves, the protective plate 203 is pushed open, so that it rotates to open the top of the protective cover 201, thereby moving the projector 202 to the top of the protective cover 201.

[0034] Example 4

[0035] Please refer to Figure 4 As shown, the internal thread of the rotating ring 301 is connected with a screw rod 303 , and the end of the screw rod 303 is fixedly connected with a fixed handle 304 .

[0036] In this solution, the screw rod 303 is driven to rotate by the fixed handle 304, so that the end of the screw rod 303 is pressed and abutted against the outer side of the mounting rod 1 to fix the rotating ring 301. When adjusting, the fixed handle 304 can be rotated in the opposite direction so that the screw rod 303 no longer contacts the mounting rod 1, thereby rotating and adjusting the rotating ring 301.

[0037] The working principle and use process of the utility model are as follows: when in use, the first connecting rod 102 is pulled so that the second connecting rod 104 drives the sliding rod 101 to move upward inside the mounting rod 1, so that the support plate 208 moves upward to push the projector 202 out to the protective cover 201, and the projection direction of the projector 202 is rotated and adjusted by rotating the rotating ring 301, and the rotating ring 301 is fixed by rotating the screw rod 303. When the projector 202 is finished using, the first connecting rod 102 is pushed toward the axial position of the mounting rod 1, thereby driving the sliding rod 101 downward through the second connecting rod 104, so that the support plate 208 moves downward, and the projector 202 is moved to the inside of the protective cover 201, and at the same time, the tooth plate 207 and the gear 205 cooperate with each other to drive the rotating shaft 204 so that the protective plate 203 rotates to close the top of the protective cover 201.

[0038] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and the specification only describe the principles of the utility model. The utility model may be subject to various changes and improvements without departing from the spirit and scope of the utility model. These changes and improvements fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. An educational projection device, comprising a mounting rod (1), characterized in that: The interior of the mounting rod (1) is slidably connected to a slide rod (101); an adjustment mechanism (3) is installed on the outer side of the mounting rod (1); the adjustment mechanism (3) comprises a rotating ring (301); the rotating ring (301) is rotatably connected to the outer side of the mounting rod (1) via a bearing; two groups of connecting rods (302) are fixedly connected to the upper end of the rotating ring (301); the top end of the connecting rod (302) is fixedly connected to a protection mechanism (2); the protection mechanism (2) comprises a protection cover (201); the slide rod (101) is movably connected to the protection cover (201); the top end of the slide rod (101) extends to the interior of the protection cover (201) and is rotatably connected to a support plate (208); a projector (202) is fixedly installed on the upper end of the support plate (208).

2. The educational projection device according to claim 1, characterized in that: The lower end of the mounting rod (1) is fixedly connected to at least three groups of first hinged seats (103), the first hinged seats (103) are hinged with first connecting rods (102) inside, and the lower end of the first connecting rod (102) is fixedly connected to a base (105).

3. The educational projection device according to claim 2, characterized in that: The lower end of the sliding rod (101) extends to the lower end of the mounting rod (1) and is fixedly connected to a third hinge seat (107); a second connecting rod (104) is hinged inside the third hinge seat (107); a second connecting rod (104) is hinged at the end of the second connecting rod (104); and the second hinge seat (106) is fixedly connected to the middle of the first connecting rod (102).

4. The educational projection device according to claim 1, characterized in that: The protection mechanism (2) further comprises two groups of protection plates (203), both ends of the protection plates (203) being fixedly connected to rotating shafts (204), the protection plates (203) being rotatably connected to the inner wall of the protection cover (201) via the rotating shafts (204), and the outer side of the rotating shafts (204) being fixedly connected to a gear (205).

5. The educational projection device according to claim 1, characterized in that: The upper end of the support plate (208) is fixedly connected to two groups of fixing frames (206), the outer upper end of the fixing frame (206) is fixedly connected to a tooth plate (207), and the middle part of the upper end of the fixing frame (206) is fixedly connected to a top block (209).

6. The educational projection device according to claim 1, characterized in that: The internal thread of the rotating ring (301) is connected to a screw rod (303), and the end of the screw rod (303) is fixedly connected to a fixed handle (304).

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