Electronic whiteboard for smart classroom

Abstract

The utility model relates to the technical field of electronic whiteboards, in particular to an electronic whiteboard for a smart classroom, which comprises a rectangular frame, fixed blackboards fixedly mounted on two sides in the rectangular frame, a first sliding blackboard and a second sliding blackboard slidably connected in the rectangular frame, and an electronic whiteboard fixed in the middle of the rectangular frame. The top and the bottom of the rectangular frame are each provided with two symmetrical sliding grooves, the top and the bottom of the first sliding blackboard are each fixedly connected with a first sliding column, the first sliding blackboard is slidably connected with the sliding grooves through the first sliding columns, and the top and the bottom of the second sliding blackboard are each fixedly connected with a second sliding column. The sliding blackboard has the advantages that clockwise rotation or anticlockwise rotation of the gear motor is controlled through the clockwise and anticlockwise switch to drive the belt to rotate, so that the two sliding blackboards are close to each other or far away from each other, the effect of opening or shielding the electronic whiteboard is achieved, the sliding blackboards do not need to be manually pushed and pulled, and the purpose of saving manpower can be achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of electronic whiteboards, and in particular to an electronic whiteboard for a smart classroom. Background Art

[0002] A smart classroom is a typical embodiment of a smart learning environment, a high-end form of multimedia and online classrooms. It is a new type of classroom built with the help of Internet of Things (IoT), cloud computing, and intelligent technologies. The most representative multimedia teaching device in a smart classroom is the electronic whiteboard.

[0003] Most existing electronic whiteboards for smart classrooms are designed as an integrated whole with the blackboard. The electronic whiteboard is hidden behind the blackboard. When in use, the blackboard can be slid to the sides to reveal the electronic whiteboard in the middle. However, existing electronic whiteboards for smart classrooms have the following drawbacks when in use:

[0004] The operation of sliding the electronic whiteboard to the sides is generally done manually by the teacher. Since the blackboard is large, it has a certain weight, which makes it more laborious to slide. Utility Model Content

[0005] The purpose of the present invention is to at least solve one of the technical defects described in the background technology.

[0006] Therefore, one purpose of the present invention is to provide an electronic whiteboard for a smart classroom, aiming to solve the problem of the difficulty in operating the electronic whiteboard for a smart classroom in the prior art.

[0007] In order to achieve the above-mentioned purpose, an embodiment of one aspect of the present invention provides an electronic whiteboard for a smart classroom, comprising a rectangular frame, fixed blackboards fixedly installed on both sides of the rectangular frame, a first sliding blackboard and a second sliding blackboard slidably connected in the rectangular frame, and an electronic whiteboard fixed in the middle of the rectangular frame, wherein the top and bottom of the rectangular frame are provided with two symmetrical sliding grooves, the top and bottom of the first sliding blackboard are fixedly connected with a first sliding column, the first sliding blackboard is slidably connected to the sliding groove through the first sliding column, the top and bottom of the second sliding blackboard are fixedly connected with a second sliding column, the second sliding blackboard is slidably connected to the sliding groove through the second sliding column, both sides of the top of the rectangular frame are fixedly connected with a bearing seat, the shaft The internal rotation of the support is connected to a rotating shaft, and the outer surface of the rotating shaft is fixedly connected to a pulley, and the two pulleys are connected by belt transmission. A reduction motor is fixedly installed on one side of the top of the rectangular frame, and the output end of the reduction motor is fixedly connected to one of the rotating shafts. A forward and reverse switch is fixedly installed on the bottom of the rectangular frame. The top of the first sliding column at the top of the first sliding blackboard is fixedly connected to a high base, and an avoidance hole is opened on one side of the high base. The top of the second sliding column at the top of the second sliding blackboard is fixedly connected to a short base. The tops of the high base and the short base are both threadedly connected with positioning screws, and the outer surface of the positioning screw is sleeved with a splint, and the high base and the short base are both fixed to the outer surface of the belt through the splint.

[0008] The beneficial effect is: by controlling the clockwise or counterclockwise rotation of the reduction motor through the forward and reverse switches, the belt is driven to rotate, so that the two sliding blackboards move closer to or away from each other, achieving the effect of opening or covering the electronic whiteboard, thereby eliminating the need to manually push and pull the sliding blackboard, and achieving the purpose of saving manpower.

[0009] Preferably, one side and the middle of the top of the rectangular frame are fixedly connected to a first fixing seat and a second fixing seat respectively, a first reset switch is fixedly installed on a side of the first fixing seat close to the second fixing seat, and a second reset switch is fixedly installed on a side of the second fixing seat close to the first fixing seat.

[0010] The beneficial effect is: the first reset switch is connected in series in the circuit that controls the clockwise rotation of the reduction motor, and the second reset switch is connected in series in the circuit that controls the counterclockwise rotation of the reduction motor. Therefore, when the reduction motor drives the two sliding blackboards to move closer to or away from each other, the short base on the top of the second sliding blackboard can press the first reset switch or the second reset switch, so that the reduction motor is powered off and stopped in time, thereby avoiding the problem of the reduction motor being obstructed and damaged by heat.

[0011] Preferably, any of the above schemes is that the top of the rectangular frame is fixedly connected to a support frame, the interior of the support frame is slidably connected to a slider, the interior of the slider is threadedly connected to an adjusting bolt, and one side of the slider is rotatably connected to a round rod.

[0012] The beneficial effect is: after the belt is installed, the slider can be driven to rise by rotating the adjusting bolt, thereby lifting the belt to make it tight, thereby avoiding the problem of the belt slipping easily during the rotation of the driving pulley of the reduction motor, and ensuring that the two sliding blackboards can move stably.

[0013] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0015] Figure 1 It is a structural diagram of the present utility model.

[0016] Figure 2 It is a structural schematic diagram of the rectangular frame of the utility model.

[0017] Figure 3 This is a schematic structural diagram of the first sliding blackboard and the second sliding blackboard and their partial enlargements of the present invention.

[0018] Figure 4 This is a structural diagram of the utility model for fixing the blackboard.

[0019] Figure 5 This is a schematic diagram of the structure of the electronic whiteboard of the present utility model.

[0020] Figure 6 For this utility model Figure 2 A magnified schematic diagram of the structure at point A.

[0021] Figure 7 For this utility model Figure 2 A magnified schematic diagram of the structure at point B.

[0022] Figure 8 For this utility model Figure 2 Enlarged schematic diagram of the structure at point C in the middle.

[0023] Wherein: 1, rectangular frame, 11, sliding groove, 12, fixed plate, 13, fixed hole, 14, through hole, 15, positioning plate, 16, U-shaped groove, 17, positioning groove, 18, groove, 2, fixed blackboard, 21, threaded hole, 3, first sliding blackboard, 31, first sliding column, 32, high base, 33, avoiding hole, 4, second sliding blackboard, 41, second sliding column, 42, low base, 341, positioning screw, 342, clamping plate, 343, rack, 5, electronic whiteboard, 51, support rod, 52, positioning block, 6, bearing seat, 61, rotating shaft, 62, pulley, 63, belt, 64, speed reducer motor, 7, forward and reverse switch, 71, first fixed seat, 72, first reset switch, 73, second fixed seat, 74, second reset switch, 8, support frame, 81, sliding block, 82, adjusting bolt, 83, round rod. DETAILED DESCRIPTION

[0024] The embodiments of the present application are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals represent the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are intended to explain the present application, and cannot be understood as a limitation of the present application.

[0025] In the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication between two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0026] The present application provides an electronic whiteboard for smart classroom.

[0027] Embodiment one:

[0028] As Figures 1-4As shown, it includes a rectangular frame 1, a fixed blackboard 2, a first sliding blackboard 3, a second sliding blackboard 4 and an electronic whiteboard 5. The rear part of the inner wall of the rectangular frame 1 is fixedly connected with a fixed plate 12, and a plurality of fixing holes 13 are provided on the fixed plate 12. Expansion bolts can be used to penetrate the fixing holes 13 and then fixed to the wall of the classroom, so that the rectangular frame 1 is fixed to the wall. The top, bottom and both sides of the rectangular frame 1 are provided with a plurality of through holes 14. The top, bottom and one side of the fixed blackboard 2 are provided with threaded holes 21. Bolts are used to penetrate the through holes 14 and then threadedly connected to the threaded holes, so that the fixed blackboard 2 can be fixed in the rectangular frame 1. The top and bottom of the rectangular frame 1 are provided with two symmetrical sliding grooves 11. The top and bottom of the first sliding blackboard 3 are fixedly connected with a first sliding column 31. The first sliding blackboard 3 is slidably connected to the sliding groove 11 through the first sliding column 31, so that the first sliding blackboard 3 is slidably connected in the rectangular frame 1, and the first sliding column 31 at the top of the first sliding blackboard 3 penetrates to the top of the rectangular frame 1. The top and bottom of the second sliding blackboard 4 are fixedly connected with The second slide post 41 and the second sliding blackboard 4 are slidably connected to the slide groove 11 through the second slide post 41, so that the second sliding blackboard 4 is slidably connected in the rectangular frame 1, and the second slide post 41 at the top of the second sliding blackboard 4 passes through the top of the rectangular frame 1. Both sides of the top of the rectangular frame 1 are fixedly connected with a bearing seat 6, and the internal rotation of the bearing seat 6 is connected with a rotating shaft 61. The outer surface of the rotating shaft 61 is fixedly connected with a pulley 62. The two pulleys 62 are connected by a belt 63. A reduction motor 64 is fixedly installed on one side of the top of the rectangular frame 1. The output end of the reduction motor 64 is fixedly connected to one of the rotating shafts 61. The reduction motor 64 drives the rotating shaft 61 to rotate, thereby driving one of the pulleys 62 to rotate, so as to achieve the purpose of rotating the belt 63. A forward and reverse switch 7 is fixedly installed at the bottom of the rectangular frame 1. The forward and reverse switch 7 is used to control the start and stop of the reduction motor 64, as well as the clockwise or counterclockwise rotation of the reduction motor 64. The top of the first slide post 31 at the top of the first sliding blackboard 3 is fixedly connected with a high base 32. A avoidance hole 33 is provided on one side of the high base 32. Figure 3 As shown, combined Figure 1For understanding, the belt 63 can be divided into two layers after being positioned by the two belt pulleys 62, the belt 63 in the lower layer penetrates the high base 32 through the avoiding hole 33, the top end of the second sliding column 41 at the top of the second sliding blackboard 4 is fixedly connected with a low base 42, the top of the high base 32 and the low base 42 are both threadedly connected with a positioning screw 341, the outer surface of the positioning screw 341 is sleeved with a clamping plate 342, the high base 32 and the low base 42 are both fixed on the outer surface of the belt 63 through the clamping plate 342, the bottom of the belt 63 in the lower layer is lapped on the top of the low base 42, the bottom of the belt 63 in the upper layer is lapped on the top of the high base 32, then the clamping plate 342 is pressed and tightened by rotating the positioning screw 341, so as to fix the base 32 and the low base 42 on the belt 63, the bottom of the clamping plate 342 is fixedly connected with a plurality of racks 343, the racks 343 can bite the belt 63, which can avoid the problem of sliding of the high base 32 or the low base 42, the speed reducer motor 64 can drive the belt 63 to rotate clockwise, which can make the two sliding blackboards close to each other, the speed reducer motor 64 can drive the belt 63 to rotate counterclockwise, which can make the two sliding blackboards away from each other.

[0029] As shown in Figure 2 and Figure 5 , the middle part of the inner wall of the rectangular frame 1 is fixedly connected with a positioning plate 15, the front side of the positioning plate 15 is fixedly connected with a plurality of U-shaped grooves 16, the top of the U-shaped groove 16 is provided with a positioning groove 17, the back of the electronic whiteboard 5 is fixedly connected with a plurality of supporting rods 51, the end away from the electronic whiteboard 5 of the supporting rod 51 is fixedly connected with a positioning block 52, the supporting rod 51 is inserted into the inside of the positioning groove 17, when installing the electronic whiteboard 5, the electronic whiteboard 5 is lifted, the supporting rod 51 is slightly higher than the U-shaped groove 16, then the electronic whiteboard 5 is placed into the inside of the rectangular frame 1, the back of the electronic whiteboard 5 is attached to the front side of the U-shaped groove 16, then the electronic whiteboard 5 is lowered, the supporting rod 51 is inserted into the positioning groove 17, and the positioning block 52 is inserted into the U-shaped groove 16, preventing the supporting rod 51 from being separated from the positioning groove 17, so as to achieve the purpose of installing the electronic whiteboard 5, which is convenient for disassembling the electronic whiteboard 6.

[0030] Preferably, as shown in Figure 2 , the two sides of the top of the positioning groove 17 are both provided with a bevel 18, which enlarges the entrance of the positioning groove 17, so as to facilitate the insertion of the supporting rod 51 into the positioning groove 17.

[0031] The working principle of this embodiment is as follows: when in use, by controlling the forward and reverse switch 7, the reduction motor 64 can be rotated clockwise or counterclockwise. When the reduction motor 64 rotates clockwise, the belt 63 drives the high base 32 and the low base 42 to move, so that the two sliding blackboards are close to each other, thereby blocking the electronic whiteboard 5; when the reduction motor 64 rotates counterclockwise, the belt 63 drives the high base 32 and the low base 42 to move, so that the two sliding blackboards are away from each other, thereby revealing the electronic whiteboard 5. Therefore, there is no need to manually push and pull the sliding blackboard, thereby achieving the purpose of saving labor.

[0032] Example 2:

[0033] like Figure 2 Figure 6 and Figure 7 As shown, on the basis of Example 1, one side and the middle of the top of the rectangular frame 1 are fixedly connected with a first fixing seat 71 and a second fixing seat 73 respectively, and a first reset switch 72 is fixedly installed on the side of the first fixing seat 71 close to the second fixing seat 73. The first fixing seat 71 is located between the two slide grooves 11 at the top of the rectangular frame 1, and the first reset switch 72 is located above the end of the right slide groove 11. The first reset switch 72 is connected in series in the circuit that controls the clockwise rotation of the reduction motor 64, so that when the reduction motor 64 drives the belt 63 to rotate clockwise, the two sliding blackboards approach each other, and after the two sliding blackboards are fitted, the short base 42 on the left side of the top of the second sliding blackboard 4 will press the first reset switch 72, causing the reduction motor 64 to rotate clockwise. The rotating circuit short-circuits, causing the reduction motor 64 to stop. A second reset switch 74 is fixedly installed on the side of the second fixed seat 73 close to the first fixed seat 71. The second fixed seat 73 is located on the right side of the top of the rectangular frame 1, and the second reset switch 74 is located above the end of the right slide slot 11. The second reset switch 74 is connected in series in the circuit that controls the counterclockwise rotation of the reduction motor 64. Therefore, when the reduction motor 64 drives the belt 63 to rotate counterclockwise, causing the two sliding blackboards to move away from each other, when the sides of the two sliding blackboards are in contact with the inner walls on both sides of the rectangular frame 1, the short base 42 on the right side of the top of the second sliding blackboard 4 will press the second reset switch 74, causing the counterclockwise rotation circuit of the reduction motor 64 to short-circuit, thereby stopping the reduction motor 64.

[0034] It should be noted that the first reset switch 72 and the second reset switch 74 are both prior art. When the reset switch is pressed, the corresponding circuit is short-circuited, and the circuit is restored when the reset switch is released. Therefore, the first reset switch 72 and the second reset switch 74 do not require manual operation.

[0035] The working principle of this embodiment is as follows: when the reduction motor 64 is controlled by the forward and reverse switches 7 to start the two sliding blackboards so that the two sliding blackboards are close to each other, when the electronic whiteboard 5 is closed, after the two sliding blackboards are attached to each other, the short base 42 on the left side of the top of the second sliding blackboard 4 will press the first reset switch 72, causing the circuit of the reduction motor 64 rotating clockwise to be short-circuited, thereby stopping the reduction motor 64; when the reduction motor 64 is controlled by the forward and reverse switches 7 to start the two sliding blackboards so that the two sliding blackboards are moved away from each other, when the electronic whiteboard 5 is opened, after the side walls of the two sliding blackboards are attached to the inner walls on both sides of the rectangular frame 1, the short base 42 on the right side of the top of the second sliding blackboard 4 will press the second reset switch 74, causing the circuit of the reduction motor 64 rotating counterclockwise to be short-circuited, thereby stopping the reduction motor 64.

[0036] Example 3:

[0037] like Figure 2 and Figure 8 As shown, on the basis of Example 1 or Example 2, the top of the rectangular frame 1 is fixedly connected to a support frame 8, the interior of the support frame 8 is slidably connected to a slider 81, the interior of the slider 81 is threadedly connected to an adjusting bolt 82, a round hole is opened on the top of the support frame 8, the adjusting bolt 82 is rotatably connected in the round hole, and the bottom end of the adjusting bolt 82 is in contact with the top of the rectangular frame 1, so when the rotating adjusting bolt 82 rotates in the slider 81, the threaded connection relationship can make the slider 81 rise or fall, and one side of the slider 81 is rotatably connected to a round rod 83, and the round rod 83 lifts up the belt 63, which can keep the belt 63 in a taut state, thereby avoiding the problem of the belt 63 loosening and slipping.

[0038] The working principle of this embodiment is as follows: when in use, after the belt 63 is put on the surface of the two pulleys 62, the slider 81 can be rotated to drive the round rod 83 to rise, thereby lifting the belt 63 until the belt 63 is in a taut state, so that when the reduction motor 64 drives the pulley 62 to rotate, the belt 63 and the pulley 62 are not easy to slip.

Claims

1. An electronic whiteboard for a smart classroom, comprising a rectangular frame (1), fixed blackboards (2) fixedly mounted on both sides of the rectangular frame (1), a first sliding blackboard (3) and a second sliding blackboard (4) slidably connected within the rectangular frame (1), and an electronic whiteboard (5) fixed in the middle of the rectangular frame (1), characterized in that: The top and bottom of the rectangular frame (1) are both provided with two symmetrical slide grooves (11); the top and bottom of the first sliding blackboard (3) are both fixedly connected with a first slide column (31); the first sliding blackboard (3) is slidably connected to the slide groove (11) through the first slide column (31); the top and bottom of the second sliding blackboard (4) are both fixedly connected with a second slide column (41); the second sliding blackboard (4) is slidably connected to the slide groove (11) through the second slide column (41); both sides of the top of the rectangular frame (1) are fixedly connected with a bearing seat (6); the interior of the bearing seat (6) is rotatably connected with a rotating shaft (61); the outer surface of the rotating shaft (61) is fixedly connected with a pulley (62); the two pulleys (62) are connected by a belt (63) for transmission; A reduction motor (64) is fixedly installed on the side, and the output end of the reduction motor (64) is fixedly connected to one of the rotating shafts (61). A forward and reverse switch (7) is fixedly installed on the bottom of the rectangular frame (1). The top of the first sliding column (31) on the top of the first sliding blackboard (3) is fixedly connected to a high base (32), and a avoidance hole (33) is opened on one side of the high base (32). The top of the second sliding column (41) on the top of the second sliding blackboard (4) is fixedly connected to a low base (42). The tops of the high base (32) and the low base (42) are both threadedly connected with a positioning screw (341), and the outer surface of the positioning screw (341) is sleeved with a splint (342). The high base (32) and the low base (42) are both fixed to the outer surface of the belt (63) through the splint (342).

2. The electronic whiteboard for smart classroom according to claim 1, characterized in that: A fixing plate (12) is fixedly connected to the rear portion of the inner wall of the rectangular frame (1), and a plurality of fixing holes (13) are provided on the fixing plate (12).

3. The electronic whiteboard for smart classroom according to claim 1, characterized in that: The top, bottom and both sides of the rectangular frame (1) are provided with a plurality of through holes (14), and the top, bottom and one side of the fixed blackboard (2) are provided with threaded holes (21).

4. The electronic whiteboard for smart classroom according to claim 1, characterized in that: A positioning plate (15) is fixedly connected to the middle of the inner wall of the rectangular frame (1), a plurality of U-shaped grooves (16) are fixedly connected to the front side of the positioning plate (15), and a positioning groove (17) is provided at the top of the U-shaped groove (16).

5. The electronic whiteboard for smart classroom according to claim 4, characterized in that: A plurality of support rods (51) are fixedly connected to the back of the electronic whiteboard (5); a positioning block (52) is fixedly connected to one end of the support rod (51) away from the electronic whiteboard (5); and the support rod (51) is inserted into the interior of the positioning slot (17).

6. The electronic whiteboard for smart classroom according to claim 5, characterized in that: Both sides of the top of the positioning groove (17) are provided with grooves (18).

7. The electronic whiteboard for smart classroom according to claim 1, characterized in that: A first fixing seat (71) and a second fixing seat (73) are fixedly connected to one side and the middle of the top of the rectangular frame (1), respectively; a first reset switch (72) is fixedly installed on a side of the first fixing seat (71) close to the second fixing seat (73); and a second reset switch (74) is fixedly installed on a side of the second fixing seat (73) close to the first fixing seat (71).

8. The electronic whiteboard for smart classroom according to claim 1, characterized in that: The top of the rectangular frame (1) is fixedly connected to a support frame (8), the interior of the support frame (8) is slidably connected to a slider (81), the interior of the slider (81) is threadedly connected to an adjusting bolt (82), and one side of the slider (81) is rotatably connected to a round rod (83).

9. The electronic whiteboard for smart classroom according to claim 1, characterized in that: A plurality of racks (343) are fixedly connected to the bottom of the clamping plate (342).

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