A multimedia projection display device for teaching

Abstract

The utility model relates to the technical field of multimedia projection equipment, and discloses a multimedia projection display equipment for teaching, which solves the problems raised in the background technology, and comprises a fixing plate, the bottom of the fixing plate is fixedly connected with a fixing frame, the bottom of the fixing frame is fixedly connected with a projector body, the side of the fixing frame is fixedly connected with a supporting plate, the bottom of the supporting plate is provided with a sliding groove, the inner cavity of the sliding groove is slidably plugged with a sliding rod, the bottom of the sliding rod is fixedly connected with a shell, the inner cavity of the fixing frame is fixedly installed with a servo motor, the output end of the servo motor is fixedly connected with a rotating rod through a coupling, the bottom of the rotating rod is fixedly connected with a first bevel gear, and the inner cavity of the support plate is rotatably plugged with a transmission shaft. The utility model has the function of protecting the projector, thereby achieving the effect of avoiding a lot of dust adhering to the projector and improving the projection quality.

Description

Technical Field

[0001] The utility model belongs to the technical field of multimedia projection equipment, in particular to multimedia projection display equipment for teaching. Background Art

[0002] A projection device is a device that can project images or videos onto a screen. It can be connected to a computer through different interfaces to play the corresponding video signals. Projection devices 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. Currently, there are more multimedia projectors used in teaching.

[0003] However, there are still some problems when using the multimedia projection display equipment for teaching on the market. The existing multimedia projection display equipment for teaching is generally installed on the top of the classroom. After a long time, a lot of dust will adhere to the multimedia projection display equipment for teaching, which will reduce the quality of projection. Since the projector is high, it is more troublesome to clean the dust. For this reason, we propose a multimedia projection display equipment for teaching. Utility Model Content

[0004] In order to solve the problem that the existing multimedia projection display equipment for teaching is generally installed on the top of the classroom, and after a long time, a lot of dust will adhere to the multimedia projection display equipment for teaching, thereby reducing the quality of projection, and because the projector is high, it is troublesome to clean the dust, the utility model provides the following technical solutions: a multimedia projection display equipment for teaching, including a fixing plate, the bottom of the fixing plate is fixedly connected to a fixing frame, the bottom of the fixing frame is fixedly connected to a projector body, the side of the fixing frame is fixedly connected to a support plate, and the bottom of the support plate is provided with a A slide groove, a slide rod is slidably inserted in the inner cavity of the slide groove, a shell is fixedly connected to the bottom of the slide rod, a servo motor is fixedly installed in the inner cavity of the fixed frame, a rotating rod is fixedly connected to the output end of the servo motor through a coupling, a first bevel gear is fixedly connected to the bottom of the rotating rod, a transmission shaft is rotatably inserted in the inner cavity of the support plate, one end of the transmission shaft is rotatably inserted in the inner wall of the slide groove, and the other end of the transmission shaft is inserted in the fixed frame, and one end of the transmission shaft inserted in the inner cavity of the fixed frame is fixedly connected to the second bevel gear, and the first bevel gear is meshed with the second bevel gear.

[0005] Preferably, the circumferential surface of the transmission shaft located in the inner cavity of the slide groove is provided with threads, the side of the slide rod is provided with a threaded hole, the transmission shaft is inserted into the threaded hole, and the transmission shaft is threadedly connected to the threaded hole.

[0006] Preferably, a bearing is sleeved on the circumferential surface of the transmission shaft, and the transmission shaft is rotatably connected to the support plate via the bearing.

[0007] Preferably, a through hole is opened on the side of the sliding rod, a fixing rod is fixedly inserted into the inner cavity of the sliding groove, and the sliding rod is slidably sleeved on the fixing rod through the through hole.

[0008] Preferably, there are two support plates, the two support plates are respectively located on two sides of the fixing frame, and a shell is provided at the bottom of the two support plates.

[0009] Preferably, a transmission shaft is provided in each of the two support plates, and the threads on the circumferential surfaces of the two transmission shafts are arranged in opposite directions.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The servo motor is started through electrical connection, and the servo motor drives the first bevel gear to rotate forward through the rotating rod, and the first bevel gear drives the two second bevel gears to rotate forward, and the two second bevel gears drive the two transmission shafts to rotate forward. Due to the setting of the bearing, the transmission shaft can be more stable when rotating. Since the threads on the circumferential surfaces of the two transmission shafts are set in opposite directions, the two sliding rods can be driven to slide to the outside of the sliding groove when the two transmission shafts rotate. The two sliding rods can drive the two shells to slide to both sides, so that the projector body is exposed. When the projector body is not in use, the servo motor is started through electrical connection. The machine drives the rotating rod to rotate in the opposite direction, the rotating rod will drive the first bevel gear to rotate in the opposite direction, the first bevel gear will drive the two second bevel gears to rotate in the opposite direction, the two second bevel gears will drive the two transmission shafts to rotate in the opposite direction, so that the sliding rod slides toward the inside of the sliding groove. Due to the setting of the fixed rod, the sliding rod will be more stable when sliding, and the two sliding rods can drive the two outer shells to slide close to each other. When the two outer shells are fitted together, the projector body can be protected from dust to prevent dust from adhering to the projector body, thereby protecting the projector, thereby preventing more dust from adhering to the projector and improving the projection quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0013] Figure 1 It is a front view structural schematic diagram of the utility model as a whole;

[0014] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model as a whole;

[0015] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0016] In the figure: 1. fixing plate; 2. fixing frame; 3. projector body; 4. supporting plate; 5. slide groove; 6. slide rod; 7. housing; 8. fixing rod; 9. through hole; 10. threaded hole; 11. servo motor; 12. rotating rod; 13. first bevel gear; 14. transmission shaft; 15. second bevel gear; 16. bearing. DETAILED DESCRIPTION

[0017] The technical solutions 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 only part of the embodiments of the utility model, rather than all of the embodiments; based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0018] Depend on Figure 1-3 The utility model includes a fixed plate 1, a fixed frame 2 is fixedly connected to the bottom of the fixed plate 1, a projector body 3 is fixedly connected to the bottom of the fixed frame 2, a support plate 4 is fixedly connected to the side of the fixed frame 2, a slide groove 5 is provided at the bottom of the support plate 4, a slide rod 6 is slidably inserted in the inner cavity of the slide groove 5, a shell 7 is fixedly connected to the bottom of the slide rod 6, a servo motor 11 is fixedly installed in the inner cavity of the fixed frame 2, a rotating rod 12 is fixedly connected to the output end of the servo motor 11 through a coupling, a first bevel gear 13 is fixedly connected to the bottom of the rotating rod 12, a transmission shaft 14 is rotatably inserted in the inner cavity of the support plate 4, one end of the transmission shaft 14 is rotatably inserted in the inner wall of the slide groove 5, and the other end of the transmission shaft 14 is inserted in the fixed frame 2, and one end of the transmission shaft 14 inserted in the inner cavity of the fixed frame 2 is fixedly connected with a second bevel gear 15, and the first bevel gear 13 is meshed with the second bevel gear 15.

[0019] Depend on Figure 2 It is shown that the circumferential surface of the transmission shaft 14 located in the inner cavity of the slide groove 5 is provided with threads, and a threaded hole 10 is opened on the side of the slide rod 6. The transmission shaft 14 is inserted into the threaded hole 10, and the transmission shaft 14 is threadedly connected with the threaded hole 10. The setting of the threads can facilitate the sliding of the outer shell 7, thereby facilitating the protection of the projector body 3.

[0020] Depend on Figure 3 It is given that a bearing 16 is sleeved on the circumferential surface of the transmission shaft 14, and the transmission shaft 14 is rotatably connected to the support plate 4 through the bearing 16. The setting of the bearing 16 can make the transmission shaft 14 more stable when rotating, thereby preventing the transmission shaft 14 from tilting.

[0021] Depend on Figure 2It is shown that a through hole 9 is opened on the side of the sliding rod 6, and a fixing rod 8 is fixedly inserted into the inner cavity of the sliding groove 5. The sliding rod 6 is slidably sleeved on the fixing rod 8 through the through hole 9. The setting of the fixing rod 8 can make the sliding rod 6 more stable when sliding and prevent the sliding rod 6 from tilting when sliding.

[0022] Depend on Figure 2 It is given that there are two support plates 4, which are respectively located on both sides of the fixing frame 2, and a shell 7 is provided at the bottom of the two support plates 4. The setting of the two shells 7 can achieve a better dust-proof effect on the projector body 3.

[0023] Depend on Figure 3 It is given that the two support plates 4 are each provided with a transmission shaft 14, and the threads on the circumferential surfaces of the two transmission shafts 14 are arranged in opposite directions, so that the servo motor 11 can simultaneously drive the two transmission shafts 14 to rotate, and can drive the two housings 7 to slide close to each other at the same time, or to slide in opposite directions at the same time.

[0024] Working principle: When the projector body 3 is used, the servo motor 11 is first started through electrical connection, and the servo motor 11 drives the first bevel gear 13 to rotate forward through the rotating rod 12, and the first bevel gear 13 drives the two second bevel gears 15 to rotate forward, and the two second bevel gears 15 drive the two transmission shafts 14 to rotate forward. Due to the setting of the bearing 16, the transmission shaft 14 can be made more stable when rotating. Since the threads on the circumferential surfaces of the two transmission shafts 14 are set in opposite directions, the two slide bars 6 can be driven to slide to the outside of the slide groove 5 when the two transmission shafts 14 rotate, and the two slide bars 6 can drive the two shells 7 to slide to both sides, so that The projector body 3 is exposed. When the projector body 3 is not in use, the servo motor 11 is started through electrical connection to drive the rotating rod 12 to rotate in the opposite direction. The rotating rod 12 will drive the first bevel gear 13 to rotate in the opposite direction. The first bevel gear 13 will drive the two second bevel gears 15 to rotate in the opposite direction. The two second bevel gears 15 will drive the two transmission shafts 14 to rotate in the opposite direction, so that the sliding rod 6 slides toward the inside of the sliding groove 5. Due to the setting of the fixed rod 8, the sliding rod 6 will be more stable when sliding. The two sliding rods 6 can drive the two outer shells 7 to slide close to each other. When the two outer shells 7 are fitted together, the projector body 3 can be protected from dust to prevent dust from adhering to the projector body 3.

[0025] 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.

[0026] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multimedia projection display device for teaching, comprising a fixing plate (1), characterized in that: The bottom of the fixing plate (1) is fixedly connected to a fixing frame (2), the bottom of the fixing frame (2) is fixedly connected to a projector body (3), the side of the fixing frame (2) is fixedly connected to a support plate (4), the bottom of the support plate (4) is provided with a slide groove (5), the inner cavity of the slide groove (5) is slidably plugged with a slide rod (6), the bottom of the slide rod (6) is fixedly connected to a shell (7), the inner cavity of the fixing frame (2) is fixedly installed with a servo motor (11), and the output end of the servo motor (11) is connected via a coupling. A rotating rod (12) is fixedly connected, and a first bevel gear (13) is fixedly connected to the bottom of the rotating rod (12). A transmission shaft (14) is rotatably inserted into the inner cavity of the support plate (4), one end of the transmission shaft (14) is rotatably inserted into the inner wall of the slide groove (5), and the other end of the transmission shaft (14) is inserted into the fixed frame (2). One end of the transmission shaft (14) inserted into the inner cavity of the fixed frame (2) is fixedly connected to a second bevel gear (15), and the first bevel gear (13) is meshingly connected with the second bevel gear (15).

2. The multimedia projection display device for teaching according to claim 1, characterized in that: The transmission shaft (14) is provided with threads on its circumferential surface located in the inner cavity of the slide groove (5), and a threaded hole (10) is provided on the side of the slide rod (6). The transmission shaft (14) is inserted into the threaded hole (10), and the transmission shaft (14) is threadedly connected to the threaded hole (10).

3. A multimedia projection display device for teaching according to claim 2, characterized in that: A bearing (16) is sleeved on the circumferential surface of the transmission shaft (14), and the transmission shaft (14) is rotatably connected to the support plate (4) via the bearing (16).

4. The multimedia projection display device for teaching according to claim 3, characterized in that: A through hole (9) is provided on the side of the slide rod (6), a fixed rod (8) is fixedly inserted into the inner cavity of the slide groove (5), and the slide rod (6) is slidably sleeved on the fixed rod (8) through the through hole (9).

5. The multimedia projection display device for teaching according to claim 4, characterized in that: There are two support plates (4), the two support plates (4) are respectively located on two sides of the fixing frame (2), and a shell (7) is provided at the bottom of the two support plates (4).

6. The multimedia projection display device for teaching according to claim 5, characterized in that: A transmission shaft (14) is disposed inside each of the two support plates (4), and the threads on the circumferential surfaces of the two transmission shafts (14) are arranged in opposite directions.

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