CN211423898U

CN211423898U - Historical literature multimedia display device

Info

Publication number: CN211423898U
Application number: CN201922099103.9U
Authority: CN
Inventors: 刘轩睿
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-09-04
Anticipated expiration: 2029-11-29

Abstract

The utility model belongs to the field of teaching equipment, in particular to a history document multimedia display device, which is inconvenient to disassemble a display screen and maintain the display screen aiming at the existing multimedia display device and has poor practicability; great vibrations can take place during the removal, influences the life's of display screen problem, now proposes following scheme, and it includes the base case, install the install bin directly over the base case and install the display screen main part on the outer roof of install bin, and spacing hole has all been seted up in the four corners of the roof of base case, and spacing downthehole clearance fit has the vertically support column, and the top fixed connection of support column is on the outer diapire of install bin, the utility model discloses novel structure is suitable for the popularization, conveniently dismantles the display screen, conveniently maintains the display screen, and the practicality is higher, and the vibrations that take place during the removal are less, can prevent that the display screen from damaging because of the vibrations that take place when removing, can guarantee the life of display screen.

Description

Historical literature multimedia display device

Technical Field

The utility model relates to a teaching equipment technical field especially relates to a historical literature multimedia display device.

Background

Teaching is a human-specific talent training activity consisting of teacher's teaching and student's learning. Through the activities, teachers purposefully, programmatically and organically guide students to learn and master cultural scientific knowledge and skills, and promote the improvement of the qualities of the students, so that the students become people required by the society. History teachers typically use multimedia presentation devices to present history literature for visually presenting history information to students. However, the existing multimedia display device is inconvenient to disassemble and maintain the display screen, and has poor practicability; in order to facilitate movement, universal wheels are generally mounted at the bottom of the multimedia display device, but the existing multimedia display device can generate large vibration when moving, so that the display screen is easily damaged due to vibration generated when moving, and the service life of the display screen is influenced.

SUMMERY OF THE UTILITY MODEL

The utility model provides a historical document multimedia display device, which solves the problems that the prior multimedia display device is inconvenient to disassemble a display screen, maintain the display screen and have poor practicability; in order to move conveniently, universal wheels are generally installed at the bottom of the multimedia display device, but the existing multimedia display device can vibrate greatly when moving, so that the display screen is damaged due to vibration generated when moving, and the service life of the display screen is affected.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

a historical literature multimedia display device comprises a base box, an installation box arranged right above the base box and a display screen main body arranged on the outer top wall of the installation box, wherein the four corners of the top wall of the base box are respectively provided with a limiting hole, vertical support columns are in clearance fit in the limiting holes, the top ends of the support columns are fixedly connected onto the outer bottom wall of the installation box, the bottom ends of the four support columns extend to the inside of the base box and are fixedly connected with support plates, the four corners of the bottom wall of each support plate and the inner bottom wall of the base box are respectively connected with a spring, the bottom ends of the display screen main body positioned on the two sides of the installation box are respectively fixedly connected with a vertical rectangular plug board through bolts, horizontal fixed plates are fixedly connected onto the outer side walls of the two sides of the installation box, the fixed plates are provided with first limiting holes, and are in clearance fit with inner rings in the first limiting holes, the bottom of the inserting plate is provided with a second limiting hole, the middle position of the bottom wall of the mounting box is rotatably connected with a vertical rotating shaft through a bearing, the top end of the rotating shaft extends into the installation box and is fixedly connected with a first bevel gear, the inner side walls of the two sides of the installation box are rotatably connected with screw rods through bearings, the outer rings of the two screw rods are spirally matched and connected with vertical moving plates, one ends of the two screw rods close to each other extend out of the screw rods and are fixedly connected with second bevel gears, the two second bevel gears are meshed and connected with the first bevel gear, and the side walls of the two moving plates below the fixed plate, which are far away from each other, are fixedly connected with horizontal limiting columns, the side walls of the two sides of the installation box are respectively provided with a movable hole, the two limiting columns are respectively in clearance fit with the inner rings of the two movable holes, and the ends, far away from each other, of the two limiting columns are respectively in clearance fit with the inner rings of the two second limiting holes.

Preferably, the four corners of the inner bottom wall of the base box are welded with fixing rods, the top ends of the fixing rods are welded on the inner top wall of the base box, the supporting plates are in clearance fit with the outer rings of the four fixing rods, and the four springs are respectively sleeved on the outer rings of the four fixing rods.

Preferably, the sliding groove is formed in the inner top wall of the installation box in the extending direction, sliding blocks are arranged at two ends of the sliding groove in a sliding mode, and the two moving plates are fixed to the bottom ends of the two sliding blocks respectively.

Preferably, the bottom end of the rotating shaft extends to the lower part of the installation box and is welded with a handle.

Preferably, universal wheels are mounted at four corners of the outer bottom wall of the base box.

Preferably, the screw threads of the two screw rods are opposite in direction.

The utility model has the advantages that:

1. through the cooperation in install bin, pivot, handle, first bevel gear, second bevel gear, lead screw, movable plate, spacing post, fixed plate, picture peg, first spacing hole and the spacing hole of second, can accomplish the dismantlement of display screen through rotating the handle, conveniently dismantle the display screen, conveniently maintain the display screen, the practicality is higher.

2. Through the cooperation of base case, spring, backup pad, support column and install bin, through the elastic potential energy effect of spring, the vibrations that take place when can effectual reduction historical literature multimedia display device removes can prevent that the display screen from damaging because of the vibrations that take place when removing, can guarantee the life of display screen.

Drawings

Fig. 1 is a schematic structural diagram of a history document multimedia display device according to the present invention.

Fig. 2 is a partially enlarged view of a portion a in fig. 1.

Fig. 3 is a partially enlarged view of a portion B in fig. 1.

Reference numbers in the figures: 1. a base case; 2. a support plate; 3. a spring; 4. a universal wheel; 5. fixing the rod; 6. a support pillar; 7. installing a box; 8. a rotating shaft; 9. a handle; 10. a screw rod; 11. moving the plate; 12. a limiting column; 13. inserting plates; 14. a fixing plate; 15. a display screen main body; 16. a first bevel gear; 17. a second bevel gear; 18. a first limit hole; 19. a second limiting hole.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

1-3, a history document multimedia display device, which comprises a base box 1, a mounting box 7 arranged right above the base box 1 and a display screen main body 15 arranged on the outer top wall of the mounting box 7, wherein universal wheels 4 are arranged at four corners of the outer bottom wall of the base box 1, limiting holes are arranged at four corners of the top wall of the base box 1, vertical supporting columns 6 are in clearance fit in the limiting holes, the top ends of the supporting columns 6 are fixedly connected to the outer bottom wall of the mounting box 7, the bottom ends of the four supporting columns 6 extend into the base box 1 and are fixedly connected with supporting plates 2, the four corners of the bottom wall of the supporting plates 2 are connected with springs 3 with the inner bottom wall of the base box 1, the bottom ends of the display screen main bodies 15 positioned at two sides of the mounting box 7 are fixedly connected with vertical rectangular inserting plates 13 through bolts, and horizontal fixing plates 14 are fixedly connected to the outer side walls at two sides of the mounting box 7, a first limiting hole 18 is formed on the fixed plate 14, the inserting plate 13 is in clearance fit with an inner ring of the first limiting hole 18, a second limiting hole 19 is formed at the bottom of the inserting plate 13, the middle position of the bottom wall of the installation box 7 is rotatably connected with a vertical rotating shaft 8 through a bearing, the top end of the rotating shaft 8 extends into the installation box 7 and is fixedly connected with a first bevel gear 16, the inner side walls of the two sides of the installation box 7 are rotatably connected with screw rods 10 through bearings, the outer rings of the two screw rods 10 are spirally matched and connected with vertical movable plates 11, one ends of the two screw rods 10 close to each other extend out of the screw rods 10 and are fixedly connected with second bevel gears 17, the two second bevel gears 17 are meshed and connected with the first bevel gear 16, horizontal limiting columns 12 are fixedly connected on the side walls of the two movable plates 11 under the fixed plate 14, which are far away, the two limiting columns 12 are respectively in clearance fit with the inner rings of the two movable holes, and the ends, far away from each other, of the two limiting columns 12 are respectively in clearance fit with the inner rings of the two second limiting holes 19.

Dead lever 5 has all been welded in the four corners of the interior diapire of base case 1, and the top welding of dead lever 5 can guarantee the stability of dead lever 5 on the interior roof of

base case

1, and 2 clearance fit in the outer lane of four dead levers 5 in the backup pad, and four springs 3 overlap respectively and establish the outer lane at four dead levers 5, can prevent that spring 3 from taking place excessive deformation because of long-term flexible.

The spout has been seted up to extension degree direction on the interior roof of install bin 7, and the both ends of spout all slide and are provided with the slider, and two movable plates 11 are fixed respectively in the bottom of two sliders, can guarantee the horizontal migration that movable plate 11 can be steady.

The bottom of pivot 8 extends to the below of install bin 7 and welds and have handle 9, can conveniently rotate pivot 8.

The thread directions of the two screw rods 10 are opposite, when the rotating shaft 8 is rotated, the two screw rods 10 can be rotated in opposite directions through the transmission of the first bevel gear 16 and the two second bevel gears 17, and the two moving plates 11 can be far away from or close to each other through the spiral transmission of the screw rods 10 and the moving plates 11.

Example (b): when the history literature multimedia display device is moved, the display screen main body 15, the installation box 7, the supporting column 6 and the supporting plate 2 vibrate, namely the display screen main body 15, the installation box 7, the supporting column 6 and the supporting plate 2 can be lifted continuously, namely the spring 3 can be stretched continuously, the spring 3 can be stretched continuously and tends to return rapidly through the elasticity and potential energy action of the spring 3, namely the display screen main body 15, the installation box 7, the supporting column 6 and the supporting plate 2 tend to return rapidly, so that the vibration generated by the display screen main body 15, the installation box 7, the supporting column 6 and the supporting plate 2 when the history literature multimedia display device is moved is effectively reduced, the damage of the display screen main body 15 due to the vibration generated during the movement can be prevented, when the display screen main body 15 needs to be detached, the rotating handle 9 is rotated to drive the rotating shaft 8 and the first bevel gear 16 to rotate, and the first bevel gear 16 is in transmission with the, can drive two lead screws 10 and rotate, through the transmission of lead screw 10 with movable plate 11, can make two movable plates 11 be close to each other, can drive two spacing posts 12 and be close to each other, all break away from spacing hole 19 of second until two spacing posts 12, then mention display screen main part 15 upwards again, make picture peg 13 rise, break away from first spacing hole 18 until picture peg 13, can accomplish the dismantlement of display screen main part 15, dismantle the easy operation of display screen, the convenience is maintained the display screen.

The utility model discloses novel structure is suitable for the popularization, conveniently dismantles the display screen, and the convenience is maintained the display screen, and the practicality is higher, and the vibrations that take place during the removal are less, can prevent that the display screen from damaging because of the vibrations that take place during the removal, can guarantee the life of display screen.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. The historical literature multimedia display device comprises a base box (1), an installation box (7) installed right above the base box (1) and a display screen main body (15) installed on the outer top wall of the installation box (7), and is characterized in that limiting holes are formed in four corners of the top wall of the base box (1), vertical supporting columns (6) are arranged in the limiting holes in a clearance fit mode, the top ends of the supporting columns (6) are fixedly connected to the outer bottom wall of the installation box (7), the bottom ends of the four supporting columns (6) extend to the inside of the base box (1) and are fixedly connected with supporting plates (2), springs (3) are connected to the four corners of the bottom wall of each supporting plate (2) and the inner bottom wall of the base box (1), inserting plates (13) which are located on two sides of the installation box (7) and are fixedly connected with the bottom ends of the display screen main body (15) through bolts are provided with vertical rectangular inserting plates (13), the mounting box is characterized in that horizontal fixing plates (14) are fixedly connected to outer side walls of two sides of the mounting box (7), first limiting holes (18) are formed in the fixing plates (14), the insertion plate (13) is in clearance fit with inner rings of the first limiting holes (18), second limiting holes (19) are formed in the bottom of the insertion plate (13), a vertical rotating shaft (8) is rotatably connected to the middle position of the bottom wall of the mounting box (7) through a bearing, the top end of the rotating shaft (8) extends to the inside of the mounting box (7) and is fixedly connected with a first bevel gear (16), lead screws (10) are rotatably connected to inner side walls of the two sides of the mounting box (7) through bearings, a vertical movable plate (11) is spirally connected to outer rings of the two lead screws (10), and second bevel gears (17) are fixedly connected to one ends, close to each other, of the two lead screws (10), the two second bevel gears (17) are meshed with the first bevel gears (16) and connected, horizontal limiting columns (12) are fixedly connected to the side walls, away from each other, of the two movable plates (11) below the fixed plate (14), movable holes are formed in the side walls of the two sides of the installation box (7), the two limiting columns (12) are in clearance fit with the inner rings of the two movable holes respectively, and the ends, away from each other, of the two limiting columns (12) are in clearance fit with the inner rings of the two second limiting holes (19) respectively.

2. The multimedia historical literature display device as claimed in claim 1, wherein the fixing rods (5) are welded to four corners of the inner bottom wall of the base box (1), the top ends of the fixing rods (5) are welded to the inner top wall of the base box (1), the supporting plate (2) is in clearance fit with the outer rings of the four fixing rods (5), and the four springs (3) are respectively sleeved on the outer rings of the four fixing rods (5).

3. The multimedia historical literature display device according to claim 1, wherein a sliding groove is formed in the inner top wall of the installation box (7) in the extending direction, sliding blocks are arranged at two ends of the sliding groove in a sliding mode, and the two moving plates (11) are fixed to the bottom ends of the two sliding blocks respectively.

4. Multimedia presentation device for historic documents according to claim 1, characterized in that the bottom end of the rotating shaft (8) extends to the lower part of the installation box (7) and is welded with a handle (9).

5. Multimedia presentation device for historic documents according to claim 1, characterized in that the universal wheels (4) are mounted at the four corners of the outer bottom wall of the base box (1).

6. A historical document multimedia presentation device according to claim 1, wherein the two lead screws (10) are threaded in opposite directions.