CN218582680U - Multimedia teaching puts in screen - Google Patents

Abstract

The utility model discloses a screen is put in multimedia teaching relates to teaching facility technical field, including putting in the screen main part, the bottom of putting in the screen main part is provided with the base, the top both sides of base are provided with the support column, top one side fixed connection of the bottom of support column and base, the top inboard of support column is provided with elevating gear, elevating gear's the middle part outside is provided with the cylinder sleeve, cylindrical sleeve and the inboard fixed connection in support column top are passed through to elevating gear's both sides, the inside cover of support column is equipped with the rectangle pole, the upper segment outside of rectangle pole is provided with display housing, one side fixed mounting of display housing has the display screen. The utility model discloses a height of putting in the screen is adjusted in the cooperation of elevating gear and support column and rack, through the cooperation of rectangle pole, first dead lever and connecting rod, adjusts the angle of putting in the screen, has ensured the teacher to the effect of student's teaching, improves the availability factor and the result of use of putting in the screen.

Description

A multimedia teaching projection screen

technical field

The utility model relates to the technical field of teaching facilities, in particular to a multimedia teaching delivery screen.

Background technique

A very iconic product of the digital information age, especially multimedia, which eliminates the previous mode of simply displaying information on a display, and instead creates a set of virtual reality experience teaching system that combines multi-dimensional, multi-device and real scenes. Teachers in the teaching process Usually it is necessary to demonstrate PPT, courseware, play videos, put the content on the computer on the display screen, and synchronize operations such as class demonstrations, handwritten annotations, and electronic whiteboards to facilitate students' learning.

There are following problems at prior art:

1. In the process of multimedia teaching, teachers often need to use projection screens for teaching to ensure the effect of teachers' teaching. However, the existing projection screens for multimedia teaching have the disadvantage of being inconvenient to adjust, which makes teachers unable to adjust according to the students' needs. The height and angle of view of the projection screen are adjusted, which limits the scope of use of the projection screen, affects the teacher's teaching effect on students, is inconvenient to use, and reduces the use efficiency and effect of the projection screen.

Utility model content

The utility model provides a multimedia teaching delivery screen, one purpose of which is to have the ability to adjust the height of the delivery screen, so as to solve the problem that teachers cannot adjust the delivery screen according to the needs of students, which limits the use range of the delivery screen and affects the teacher's understanding of students. Another purpose of the problem of teaching effect is to solve the problem that teachers cannot adjust the projection screen according to the needs of students, so as to facilitate the adjustment and protection of students' eyesight, and ensure the efficiency and effect of the projection screen.

In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is:

A multimedia teaching delivery screen, comprising a delivery screen main body, a base is provided at the bottom of the delivery screen main body, support columns are provided on both sides of the top of the base, and the bottom of the support column is fixedly connected to the top side of the base, The inner side of the top of the support column is provided with a lifting device, and the outer middle part of the lifting device is provided with a cylindrical sleeve. The two sides of the lifting device are fixedly connected with the inner side of the top of the support column through the cylindrical sleeve. A rectangular rod is sheathed, and the bottom end of the rectangular rod is movably connected with the inner side wall of the support column through a lifting device. A display case is arranged on the outer side of the upper section of the rectangular rod, and a display screen is fixedly installed on one side of the display case.

The further improvement of the technical solution of the utility model lies in that: the lifting device includes a rocker, one side of the rocker is fixedly connected with the outer wall of the support column, one side of the rocker is provided with a first gear, the The inner wall of the first gear is fixedly connected with the outer wall of the rocker, and a second gear is arranged on one side of the first gear, and the inner wall of the second gear is fixedly connected with the outer wall of the rocker. One side of the second gear is provided with a rack, one side of the rack is engaged with the outer side of the second gear, and the other side of the rack is fixedly connected with the inner wall of the rectangular rod.

Adopting the above-mentioned technical scheme, the lifting device in this scheme cooperates with the support column and the rack to drive the second gear to rotate by rotating the rocker, and the second gear drives the rack, and the rack is fixedly connected to the rectangular rod, so that the rectangular rod Driven by the lifting device, it moves up or down to adjust the height of the projection screen, improves the teaching effect of teachers to students, is easy to use, and ensures the efficiency and effect of the projection screen.

The further improvement of the technical solution of the utility model is that: a fixed block is arranged above the first gear, the bottom of the fixed block is fixedly connected with the outer wall of the support column, and a trapezoidal rod is set inside the fixed block, so that The outer side of the trapezoidal rod is sheathed with a first spring, and the trapezoidal rod is movably connected to the inner wall of the fixed block through the first spring, and one side of the trapezoidal rod is toothed and connected to the outer side of the first gear.

With the above technical scheme, the cooperation of the first gear, the trapezoidal rod and the fixed block in this scheme ensures the stability of the trapezoidal rod through the fixed block, uses the spring for shock absorption, improves the service life of the trapezoidal rod, and then inserts the trapezoidal rod into the first The first gear ensures the stability of the device, prevents the position of the delivery screen from changing, improves the use efficiency of the device, and meets the use requirements.

The further improvement of the technical solution of the utility model lies in that: the top of the rectangular rod is provided with a groove, and a first fixing rod is arranged below the groove, and the two sides of the first fixing rod and the two side walls of the rectangular rod Fixedly connected, the outer side of the first fixed rod is provided with a connecting rod, the inner side of one end of the connected rod is fixedly connected with the outer wall of the first fixed rod, and the other side of the connected rod is connected to one side of the second fixed rod Fixed connection.

Adopting the above-mentioned technical scheme, the cooperation of the rectangular rod, the first fixed rod and the connecting rod in this scheme makes the connecting rod and the rectangular rod fixedly connected through the first fixed rod, and the stability of the device is ensured by the mutual cooperation between the connecting rod and the groove High performance, easy to use, and improve the efficiency of the projection screen.

Owing to adopting above-mentioned technical scheme, relative to the prior art, the technical progress of the utility model is:

1. The utility model provides a multimedia teaching delivery screen, which adopts the cooperation of the lifting device, the support column and the rack, drives the second gear to rotate by rotating the rocker, and the second gear drives the rack, and the rack is fixed to the rectangular rod The connection makes the rectangular rod move up or down under the drive of the lifting device, so as to adjust the height of the delivery screen. Through the cooperation of the first gear, the trapezoidal rod and the fixed block, the stability of the trapezoidal rod is guaranteed by the fixed block. The spring absorbs the shock and improves the service life of the trapezoidal rod, and then inserts the first gear through the trapezoidal rod to ensure the stability of the device, prevents the position of the screen from changing, improves the use efficiency of the device, meets the needs of use, and improves the teaching effect of teachers to students. It is easy to use and ensures the efficiency and effect of the projection screen.

2. The utility model provides a multimedia teaching delivery screen, which adopts the cooperation of the rectangular rod, the first fixed rod and the connecting rod, and makes the connecting rod and the rectangular rod fixedly connected through the first fixed rod, and utilizes the mutual cooperation between the connecting rod and the groove The stability of the device is ensured by the cooperation of the connecting rod, the button and the second spring. The stability of the button is hindered by the connecting rod, and the use efficiency of the button is guaranteed by the second spring. The button, the third gear and the second fixed rod When adjusting the delivery screen, press the button to easily adjust the angle of the delivery screen, release the button, under the elastic force of the second spring, one side of the button slides into the side of the third gear, and the delivery cannot be adjusted at this time The screen can be adjusted to improve the stability of the device, ensure the teacher's teaching effect on students, and is easy to use, which greatly improves the efficiency and effect of the projection screen.

Description of drawings

Fig. 1 is the three-dimensional schematic view of the structure of the utility model;

Fig. 2 is the three-dimensional schematic diagram of the structure lifting device of the present utility model;

Fig. 3 is the enlarged schematic view of structure A of the present utility model;

Fig. 4 is a three-dimensional schematic diagram showing one side of the housing of the utility model;

Fig. 5 is a schematic cross-sectional view of one side of the structural connecting rod of the present invention.

In the figure: 1. The main body of the projection screen; 2. The base; 3. The support column; 31. The rectangular rod; 32. The rack; 33. The groove; 34. The first fixing rod; 4. The lifting device; 41. The rocker; 411, the first gear; 42, the fixed block; 421, the trapezoidal rod; 422, the first spring; 43, the cylindrical sleeve; 44, the second gear; 5, the display screen; 51, the display shell; 52, the fixed sleeve; 53, fixed rod; 531, third gear; 54, connecting rod; 541, button; 542, second spring.

Detailed ways

Below in conjunction with embodiment the utility model is described in further detail:

Example 1

As shown in Figures 1-5, the utility model provides a multimedia teaching delivery screen, including a delivery screen main body 1, a base 2 is provided at the bottom of the delivery screen main body 1, and support columns 3 are provided on both sides of the top of the base 2 to support The bottom of the column 3 is fixedly connected to the top side of the base 2, the inner side of the top of the supporting column 3 is provided with a lifting device 4, the outer middle of the lifting device 4 is provided with a cylindrical sleeve 43, and the two sides of the lifting device 4 pass through the cylindrical sleeve 43 It is fixedly connected with the inner side of the top of the support column 3. The inside of the support column 3 is provided with a rectangular rod 31. The bottom end of the rectangular rod 31 is movably connected with the inner side wall of the support column 3 through the lifting device 4. The upper part of the rectangular rod 31 is provided with a display Housing 51, display screen 5 is fixedly installed on one side of housing 51, lifting device 4 includes rocking bar 41, one side of rocking bar 41 is fixedly connected with the outer wall of support column 3, and one side of rocking bar 41 is provided with the first A gear 411, the inner side wall of the first gear 411 is fixedly connected with the outer side wall of the rocking bar 41, the second gear 44 is arranged on one side of the first gear 411, the inner side wall of the second gear 44 is connected with the outer side wall of the rocking bar 41 Fixedly connected, one side of the second gear 44 is provided with a rack 32, one side of the rack 32 is engaged with the outer side of the second gear 44, and the other side of the rack 32 is fixedly connected with the inner wall of the rectangular rod 31.

In this embodiment, the second gear 44 is driven to rotate by rotating the rocker 41, and the second gear 44 drives the rack 32, and the rack 32 is fixedly connected to the rectangular rod 31, so that the rectangular rod 31 is driven by the lifting device 4 Move up or down to adjust the height of the projection screen, improve the teacher's teaching effect on students, facilitate use, and ensure the efficiency and effect of the projection screen.

Example 2

As shown in Figures 1-5, on the basis of Embodiment 1, the utility model provides a technical solution: preferably, a fixed block 42 is arranged above the first gear 411, and the bottom of the fixed block 42 and the support column 3 The outer wall is fixedly connected, the inside of the fixed block 42 is provided with a trapezoidal rod 421, the outer side of the trapezoidal rod 421 is provided with a first spring 422, the trapezoidal rod 421 is flexibly connected with the inner side wall of the fixed block 42 by the first spring 422, and the trapezoidal rod One side of 421 is toothed and connected on the outside of the first gear 411, the top of the rectangular rod 31 is provided with a groove 33, the bottom of the groove 33 is provided with a first fixed rod 34, the two sides of the first fixed rod 34 are connected with the rectangular rod The two sidewalls of 31 are fixedly connected, the outer side of the first fixed rod 34 is provided with a connecting rod 54, the inner side of one end of the connecting rod 54 is fixedly connected with the outer side wall of the first fixed rod 34, and the other side of the connecting rod 54 is connected with the second fixed rod 54. One side of the rod 53 is fixedly connected.

In this embodiment, the stability of the trapezoidal rod 421 is ensured by the fixed block 42, and the first spring 422 is used for shock absorption to improve the service life of the trapezoidal rod 421, and then the trapezoidal rod 421 is inserted into the first gear 411 to ensure the stability of the device , to prevent the position of the projection screen from changing, improve the use efficiency of the device, make the connecting rod 54 and the rectangular rod 31 fixedly connected through the first fixed rod 34, utilize the mutual cooperation of the connecting rod 54 and the groove 33 to ensure the stability of the device, and facilitate Use to improve the efficiency of the projection screen.

Example 3

As shown in Figures 1-5, on the basis of Embodiment 1, the utility model provides a technical solution: preferably, a button 541 is provided inside one side of the connecting rod 54, and a second spring is provided on one side of the button 541 542, one side of the second spring 542 is fixedly connected to the inner side wall of the connecting rod 54, and the other side of the second spring 542 is fixedly connected to one side of the button 541, so that the button 541 is connected to the connecting rod 54 by the second spring 542. The inner wall is fixedly connected, one side of the button 541 is provided with a third gear 531, the inner wall of the third gear 531 is fixedly connected with the outer side of the second fixed rod 53, and the outer side of the second fixed rod 53 is sleeved with a fixed sleeve 52, The fixing sleeve 52 is fixedly connected to the second fixing rod 53 through a connecting rod 54 , and one side of the fixing sleeve 52 is fixedly connected to a side wall of the display housing 51 .

In this embodiment, the stability of the button 541 is guaranteed by the connecting rod 54, and the use efficiency of the button 541 is guaranteed by the second spring 542, thereby improving the service life of the device. Release the button 541 for the angle of the projection screen, and under the elastic force of the second spring 542, one side of the button 541 slides into the side of the third gear 531. At this time, the projection screen cannot be adjusted to improve the stability of the device. Guarantee the effect of teachers teaching students, easy to use, and greatly improve the use efficiency and effect of the projection screen.

The working principle of the multimedia teaching projection screen will be described in detail below.

As shown in Figure 1-5, when in use, place the main body of the projection screen on a flat ground, ensure the stability of the main body of the projection screen through the bottom plate, and drive the second gear 44 to rotate by rotating the rocker 41, and the second gear 44 drives rack 32, and the rack 32 is fixedly connected with the rectangular rod 31, so that the rectangular rod 31 moves upward or downward under the drive of the lifting device 4, so as to adjust the height of the projection screen, improve the teacher's teaching effect on the students, and facilitate The use ensures the use efficiency and effect of the projection screen. The stability of the trapezoidal rod 421 is guaranteed by the fixed block 42. The first spring 422 is used for shock absorption to improve the service life of the trapezoidal rod 421. Then the trapezoidal rod 421 is inserted into the first The gear 411 guarantees the stability of the device, prevents the position of the screen from changing, and improves the use efficiency of the device. The connecting rod 54 is fixedly connected to the rectangular rod 31 through the first fixed rod 34, and the mutual cooperation between the connecting rod 54 and the groove 33 is used to ensure the stability of the device. It improves the stability of the device, is easy to use, improves the use efficiency of the delivery screen, ensures the stability of the button 541 through the connecting rod 54, and then ensures the use efficiency of the button 541 through the second spring 542, improves the service life of the device, and adjusts the delivery screen. At this time, the angle of the projection screen can be easily adjusted by pressing the button 541. When the button 541 is released, under the elastic force of the second spring 542, one side of the button 541 slides into the side of the third gear 531, and at this time, the projection screen cannot be adjusted. The screen can be adjusted to improve the stability of the device, ensure the teacher's teaching effect on students, and is easy to use, which greatly improves the efficiency and effect of the projection screen.

The above has generally described the utility model in detail, but on the basis of the utility model, some modifications or improvements can be made to it, which is obvious to those skilled in the art. Therefore, any modification or improvement that does not depart from the spirit of the present utility model is within the protection scope of the present utility model.

Claims (6)

1. A multimedia teaching delivery screen, comprising a delivery screen main body (1), the bottom of the delivery screen main body (1) is provided with a base (2), characterized in that: the top sides of the base (2) are provided with A support column (3), the bottom of the support column (3) is fixedly connected to the top side of the base (2), and a lifting device (4) is provided on the inner side of the top of the support column (3), and the lifting device ( 4) A cylindrical sleeve (43) is provided on the outer side of the middle part, and the two sides of the lifting device (4) are fixedly connected to the inner side of the top of the support column (3) through the cylindrical sleeve (43), and the support column (3) A rectangular rod (31) is sleeved inside, and the bottom end of the rectangular rod (31) is movably connected with the inner side wall of the support column (3) through the lifting device (4). A display case (51), a display screen (5) is fixedly installed on one side of the display case (51). 2. A multimedia teaching delivery screen according to claim 1, characterized in that: the lifting device (4) includes a rocker (41), one side of the rocker (41) is connected to the support column (3 ) is fixedly connected to the outer wall of the rocker (41), a first gear (411) is provided on one side of the rocker (41), and the inner wall of the first gear (411) is fixedly connected to the outer wall of the rocker (41), so One side of the first gear (411) is provided with a second gear (44), the inner side wall of the second gear (44) is fixedly connected with the outer side wall of the rocker (41), and the second gear (44 ) is provided with a rack (32) on one side, one side of the rack (32) is engaged with the outer side of the second gear (44), and the other side of the rack (32) is connected to the rectangular rod ( 31) The inner side wall is fixedly connected. 3. A multimedia teaching delivery screen according to claim 2, characterized in that: a fixed block (42) is arranged above the first gear (411), and the bottom of the fixed block (42) is in contact with the support column The outer wall of (3) is fixedly connected, the interior of the fixed block (42) is provided with a trapezoidal rod (421), and the outer side of the trapezoidal rod (421) is provided with a first spring (422), and the trapezoidal rod (421) is provided with a first spring (422). (421) is movably connected with the inner side wall of the fixed block (42) through the first spring (422), and one side of the trapezoidal rod (421) is engaged with the outer side of the first gear (411). 4. A multimedia teaching delivery screen according to claim 1, characterized in that: the top of the rectangular rod (31) is provided with a groove (33), and the bottom of the groove (33) is provided with a first A fixed rod (34), the two sides of the first fixed rod (34) are fixedly connected with the two side walls of the rectangular rod (31), and the outer side of the first fixed rod (34) is provided with a connecting rod (54), The inner side of one end of the connecting rod (54) is fixedly connected to the outer wall of the first fixing rod (34), and the other side of the connecting rod (54) is fixedly connected to one side of the second fixing rod (53). 5. A multimedia teaching projection screen according to claim 4, characterized in that: a button (541) is arranged inside one side of the connecting rod (54), and a second button (541) is arranged on one side of the button (541). Two springs (542), one side of the second spring (542) is fixedly connected with the inner side wall of the connecting rod (54), and the other side of the second spring (542) is connected with one side of the button (541) The fixed connection makes the button (541) fixedly connected with the inner side wall of the connecting rod (54) through the second spring (542). 6. A multimedia teaching projection screen according to claim 5, characterized in that: a third gear (531) is provided on one side of the button (541), and the inner wall of the third gear (531) is in contact with The outer side of the second fixed rod (53) is fixedly connected, and the outer side of the second fixed rod (53) is sleeved with a fixed sleeve (52), and the fixed sleeve (52) is connected to the second fixed rod (54) through the connecting rod (54). The fixing rod (53) is fixedly connected, and one side of the fixing sleeve (52) is fixedly connected with a side wall of the display housing (51).

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