A multimedia teaching device

Abstract

The utility model belongs to the field of teaching device especially is concerned about a multimedia teaching device. The technology includes box and the multimedia integrated machine in the box, the lower extreme of box is installed with the drive mechanism for driving multimedia integrated machine to go in and out of the box, the lower portion of box is provided with two and shows the support frame of left and right distribution, the front and rear ends of each support frame bottom all are installed with the gyro wheel, the top of each support frame all are fixed with the ball, the bottom of box is provided with the sliding slot, the ball is located in the sliding slot and can slide along the sliding slot and rotate around the center of ball itself, the upper groove wall of sliding slot is provided with four clamping grooves for containing and clamping the ball from left to right in proper order. The utility model drives multimedia integrated machine to lift through the drive mechanism, thereby completes the arrangement of multimedia integrated machine fast, still through making the gyro wheel of support frame bottom switch between "one before one" support state and "one left one right" storage state, makes the whole device have outdoor use and safe transfer function.

Description

Technical Field

[0001] This utility model belongs to the field of teaching devices, and in particular relates to a multimedia teaching device. Background Technology

[0002] With the continuous updating of educational philosophies and the ongoing advancement of teaching methods, modern teaching is no longer limited to the traditional blackboard and chalk model, but is increasingly developing towards interactivity, visualization, and efficiency. Against this backdrop, multimedia teaching has emerged and rapidly become widespread. Interactive teaching equipment, represented by multimedia all-in-one machines, integrates multiple functions such as display, touch control, computer, and audio, vividly displaying rich teaching resources such as text, images, audio, and video, greatly enhancing classroom engagement and information transmission efficiency. It has become a standard feature in classrooms, conference rooms, and other fixed indoor spaces.

[0003] However, existing multimedia teaching devices are primarily designed for fixed indoor environments, typically using wall-mounted or floor-standing installations. However, when teaching scenarios extend outdoors, such as summer camps, field trips, temporary outdoor classrooms, and community activities, these fixed devices reveal a series of problems: poor portability, difficulty in relocation, cumbersome deployment processes, and susceptibility to damage during transport due to a lack of effective mobile support and protective structures. Therefore, some multimedia all-in-one machines are mounted on a movable stand. However, during transport, the protruding support components of conventional mobile stands (usually U-shaped or simply a board) significantly hinder the overall placement, affecting transport and storage. Furthermore, due to the small contact area with the vehicle, the multimedia all-in-one machine is easily damaged by bumps and displacement. Therefore, there is an urgent need for a multimedia teaching device that is easy to use in outdoor settings. Utility Model Content

[0004] The purpose of this invention is to provide a multimedia teaching device that is easy to move and transport, and has good protective capabilities.

[0005] The multimedia teaching device includes a box with an open top and a multimedia all-in-one machine inside the box. A drive mechanism for driving the multimedia all-in-one machine to move up and down in and out of the box is installed at the lower end of the box. Two support frames are arranged on the bottom of the box and are distributed on the left and right. Rollers are installed at the front and rear ends of the bottom of each support frame. A ball is fixed at the top of each support frame. A sliding groove is opened at the bottom of the box. The ball is located in the sliding groove and can slide along the sliding groove and rotate around its own center. The upper wall of the sliding groove has four slots from left to right for accommodating and locking the ball.

[0006] Furthermore, the driving mechanism includes a support block located at the bottom of the multimedia all-in-one machine and used to support the multimedia all-in-one machine. Below the support block, there are two double-ended lead screws with opposite thread directions and a drive motor for driving the double-ended lead screws to rotate. Each of the two threads of the double-ended lead screws is fitted with a first slider that is threadedly engaged with it. Guide rods are horizontally fixed at the bottom left and bottom right of the support block. Each of the two guide rods is fitted with a second slider that is slidably engaged with it. There are two connecting rods that are scissor-shaped and hinged between the support block and the double-ended lead screws. The bottom ends of the two connecting rods are hinged to different first sliders, and the top ends of the two connecting rods are hinged to different second sliders.

[0007] Furthermore, the multimedia all-in-one machine is vertically equipped with limit rods on both the left and right sides. Both limit rods are fixed to the inner side wall of the housing by upper and lower blocks. The left end of the support block is fitted onto the left limit rod and slides up and down with it, while the right end of the support block is fitted onto the right limit rod and slides up and down with it.

[0008] Furthermore, it also includes a mounting plate installed on the back of the multimedia all-in-one machine, which is fixed to the rear top of the support block by several connecting plates.

[0009] Furthermore, a fixing groove is provided on the front side wall of the box, and a magnetic whiteboard is installed in the fixing groove.

[0010] Furthermore, the support frame has a “⊥” shaped structure.

[0011] Furthermore, the upper end of the cross-section of the groove is circular, and the lower end is rectangular, with the width of the rectangle being smaller than the diameter of the circle.

[0012] Furthermore, a rod is vertically fixed to the upper wall of the slot, and a slot is provided on the top of the sphere for inserting and locking the rod.

[0013] Furthermore, a rubber pad is fixed to the inner wall of the slot.

[0014] Compared with the prior art, the present invention has the following beneficial effects: This invention utilizes a scissor-type drive mechanism to raise and lower the multimedia all-in-one machine, enabling rapid setup and providing a robust protective shell when the machine is stored inside, preventing damage when not in use. Furthermore, a sliding groove at the bottom of the shell and a support frame that can move and rotate along the groove, along with slots at specific locations on the groove that engage with a ball on the top of the support frame, allow the rollers at the bottom of the support frame to switch between a "front-and-back" support state and a "left-and-right" storage state. This design ensures the entire device offers excellent outdoor stability and convenient transport and flat storage, avoiding the problems of traditional multimedia teaching equipment being difficult to move and easily damaged by bumps or displacement. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 This is a schematic diagram showing the fit between the support block, connecting plate, and mounting plate. Figure 4 This is a schematic diagram of the slide and the slot structure; Figure 5 This is a schematic diagram of the storage state of this utility model; The components in the diagram are named as follows: 1. Housing; 2. Multimedia all-in-one machine; 3. Upper stop block; 4. Limiting rod; 5. Support block; 6. Lower stop block; 7. Support frame; 8. Roller; 9. Insert rod; 10. First slider; 11. Connecting rod; 12. Double-ended lead screw; 13. Second slider; 14. Guide rod; 15. Ball; 16. Rubber pad; 17. Connecting plate; 18. Mounting plate. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

[0017] Example 1 The multimedia teaching device described in this embodiment includes a box 1 with an open top and a multimedia all-in-one machine 2 located inside the box 1, such as... Figure 1 As shown, in practical applications, the cabinet 1 can also be hinged at the top to a cover plate for closing the opening. At the same time, the cover plate is fixed to the cabinet 1 by a buckle, so that when the multimedia all-in-one machine 2 is located inside the cabinet 1, dust, debris and other objects can be prevented from entering the cabinet 1. The multimedia all-in-one machine 2 has a support block 5 at its bottom for supporting it. Below the support block 5, two double-ended lead screws 12 with opposite thread directions are horizontally arranged, along with a drive motor for rotating the double-ended lead screws 12. Each of the two threads of the double-ended lead screws 12 is fitted with a first slider 10 that is threadedly engaged with it. Guide rods 14 are horizontally fixed at the left and right bottom of the support block 5, and each guide rod 14 is fitted with a second slider 13 that slides left and right with it. Two connecting rods 11, hinged in a scissor-like manner, are provided between the support block 5 and the double-ended lead screws 12. The bottom ends of the two connecting rods 11 are hinged to different first sliders 10. On a slider 10, the top ends of two connecting rods 11 are hinged to different second sliders 13 (the support block 5, double-ended lead screw 12, drive motor, first slider 10, guide rod 14, second slider 13, and connecting rods 11 in this section constitute the drive mechanism for driving the multimedia all-in-one machine 2 to move up and down into and out of the housing 1, wherein the drive motor can be a micro servo motor or a stepper motor). In this embodiment, the drive motor drives the double-ended lead screw 12 to rotate, which can cause the angle between the two connecting rods 11 that are hinged in a scissor shape to change, thereby pushing the support block 5 to move up and down in a scissor-like structure, and thus driving the multimedia all-in-one machine 2 as follows. Figure 1 As shown, the box extends out of the housing 1 (in use) or as... Figure 5 The cabinet 1 is retracted as shown (in its stowed state). This allows for quick setup of the multimedia all-in-one machine 2, and when the all-in-one machine 2 is stored inside the cabinet 1, the cabinet 1 forms a sturdy protective shell, preventing damage to the multimedia all-in-one machine 2 when not in use. Figure 1 , Figure 3 and Figure 5 As shown, a mounting plate 18 is bolted to the back of the multimedia all-in-one machine 2. The mounting plate 18 is fixed to the rear top of the support block 5 by several connecting plates 17. The mounting plate 18 serves as a connector, and the support block 5 serves as a support. The middle parts of two connecting rods 11 are hinged together by rivets. The left and right bottom of the support block 5 are provided with fixing grooves, and the guide rod 14 is fixed in the corresponding fixing groove. The connecting rod 11 is hinged to the first slider 10 and the second slider 13 by conventional "U"-shaped hinge seats. The housing of the drive motor is installed at the inner bottom of the housing 1. One end of the double-ended lead screw 12 is connected to the power output end of the drive motor, and the other end is installed at the inner bottom of the housing 1 by bearings and bearing seats. In actual application, the switch of the drive motor can be set on the side wall of the housing 1, and the power cord is set to use an external power supply to power the drive motor. refer to Figure 1 and Figure 5The multimedia all-in-one machine 2 has vertically installed limit rods 4 on both the left and right sides. Both limit rods 4 are fixed to the inner side wall of the housing 1 by the upper stop block 3 and the lower stop block 6. The left end of the support block 5 is fitted onto the left limit rod 4 and slides up and down with it. The right end of the support block 5 is fitted onto the right limit rod 4 and slides up and down with it. In this embodiment, the limit rods 4 can improve the stability of the multimedia all-in-one machine 2 when it rises and falls. The upper stop block 3 is fixed to the top of the limit rod 4 and the lower stop block 6 is fixed to the bottom of the limit rod 4. In actual application, in order to prevent the multimedia all-in-one machine 2 from not being able to fully extend out of the housing 1, a through groove can be opened at the upper end of the front side wall of the housing 1, and an extension part can be integrally formed at the bottom of the front end of the cover plate to ensure that the inside of the housing 1 is in a closed state when the cover plate is fastened. refer to Figure 1 and Figure 5 Two support frames 7 are arranged on the bottom of the box 1 and are distributed on the left and right. Each support frame 7 has rollers 8 installed at both the front and rear ends of its bottom. Each support frame 7 has a ball 15 fixed on its top. In this embodiment, the box 1 can be moved easily through the support frames 7 and the rollers 8 at its bottom, so that the whole device can be moved as easily as a suitcase and can be deployed quickly, thereby easily extending multimedia teaching to outdoor environments such as playgrounds, campsites, and fields; wherein, the support frame 7 has a "⊥" shaped structure and the rollers 8 have a braking structure; The bottom of the housing 1 is provided with a sliding groove, and the sphere 15 is located in the sliding groove and can slide along the sliding groove and rotate around its own center, such as Figure 1 , Figure 4 and Figure 5 As shown, in this embodiment, the sphere 15 allows the support frame 7 to move and rotate along the slide. This allows the support frame 7 to be positioned so that the rollers 8 at the bottom of the support frame 7 are in a "one in front, one behind" position to support the box 1, and also allows the two support frames 7 to be positioned so that they are completely under the box 1 by retracting the rollers 8 at the bottom of the support frame 7 to be in a "one on the left, one on the right" position. This makes the overall outline of the device more regular, allowing it to be placed flat or upright in the carriage during transport without obstructing the stacking of other items. It also reduces the risk of damage to the multimedia all-in-one machine 2 caused by bumps or displacement. The upper end of the slide is circular, and the lower end is rectangular, with the width of the rectangle being smaller than the diameter of the circle. This restricts the support frame 7 to only move along the slide and rotate around the center of the sphere 15; The upper wall of the chute has four slots from left to right for accommodating and holding the sphere 15, such as... Figure 1 , Figure 2 and Figure 5As shown, in this embodiment, four slots that can accommodate and hold the spheres 15 allow the rollers 8 at the bottom of the support frame 7 to stably switch between a "front and back" supporting state and a "left and right" storage state. When the two spheres 15 are held in the leftmost and rightmost slots and the rollers 8 are in a "front and back" position, the support frame 7 is in a supporting state. When the two spheres 15 are held in the middle slots and the rollers 8 are in a "left and right" position, the support frame 7 is in a storage state. The upper wall of the slot is vertically fixed with a rod 9, and the top of the sphere 15 has a slot for inserting and holding the rod 9. By inserting the rod 9 into the slot of the sphere 15, the overall stability of the support frame 7 can be enhanced.

[0018] In this embodiment, the device is first carried outdoors in a vehicle and placed on the ground. Then, the housing 1 is lifted and the support frame 7 is pulled down. The support frame 7 is then rotated 90° and moved to the leftmost and rightmost positions. The housing 1 is then lowered. At this point, the two rollers 8 on the same support frame 7 are in a "one in front, one behind" support state. Then, the drive motor is started to drive the double-ended lead screw 12 to rotate, causing the two first sliders 10 to move closer to each other. During this process, the angle between the two scissor-shaped connecting rods 11 gradually decreases, while the support block 5 and the multi-axis... The multimedia all-in-one machine 2 moves upwards until it extends out of the housing 1, then the drive motor is turned off, completing the deployment of the multimedia all-in-one machine 2. After the teaching is completed, the multimedia all-in-one machine 2 is completely retracted into the housing 1 by the drive motor, then the housing 1 is lifted, while the support frame 7 is rotated and slid to align the two balls 15 with the two slots in the middle. Then the housing 1 is lowered, and the two rollers 8 on the same support frame 7 are in the "left and right" storage state. The device can then be placed flat or vertically in the carriage for transportation.

[0019] Example 2 This embodiment further illustrates the technology. The front side wall of the box 1 is provided with a fixing groove, and a magnetic whiteboard (not shown in the figure) is installed in the fixing groove. In this embodiment, the magnetic whiteboard can be used for writing and explanation in addition to multimedia teaching, thereby improving the teaching quality. The magnetic whiteboard is an existing technology. It consists of a writing board, a middle board and a back board. The writing board is the whiteboard surface, which is a special material made of steel with magnetic paint. It can be written on with a special whiteboard marker and can be easily erased, just like writing with chalk on a blackboard. The middle board is several layers of corrugated paper with a certain degree of hardness. The back board is a galvanized plate. Its advantage is that the text to be displayed can be attracted to the magnetic whiteboard with magnetic particles or magnetic strips, thereby facilitating the teacher's teaching.

[0020] Example 3 This embodiment further illustrates the technology, wherein a rubber pad 16 is fixed to the inner wall of the slot, such as... Figure 2As shown, in this embodiment, the rubber pad 16 can increase the friction between the insertion rod 9 and the slot, thereby further improving the stability of the overall shape of the support frame 7 when the ball 15 is stuck in the slot.

Claims

1. A multimedia teaching device, comprising a box (1) with an open top and a multimedia all-in-one machine (2) located inside the box (1), characterized in that: The lower end of the housing (1) is equipped with a drive mechanism for driving the multimedia all-in-one machine (2) to move up and down into and out of the housing (1). There are two support frames (7) arranged on the bottom of the housing (1) and distributed on the left and right. Rollers (8) are installed at the front and rear ends of the bottom of each support frame (7). A ball (15) is fixed on the top of each support frame (7). A sliding groove is opened at the bottom of the housing (1). The ball (15) is located in the sliding groove and can slide along the sliding groove and rotate around the center of the ball (15). The upper wall of the sliding groove is provided with four slots from left to right for accommodating and locking the ball (15).

2. The multimedia teaching device according to claim 1, characterized in that: The drive mechanism includes a support block (5) located at the bottom of the multimedia all-in-one machine (2) and used to support the multimedia all-in-one machine (2). Below the support block (5) are two double-ended lead screws (12) with opposite screw directions and a drive motor for driving the double-ended lead screws (12) to rotate. The two ends of the double-ended lead screws (12) are fitted with first sliders (10) that are threadedly engaged with them. The left and right bottom of the support block (5) are both fixed with guide rods (14). The two guide rods (14) are fitted with second sliders (13) that are slidably engaged with them. There are two connecting rods (11) that are scissor-shaped and hinged between the support block (5) and the double-ended lead screws (12). The bottom ends of the two connecting rods (11) are hinged to different first sliders (10), and the top ends of the two connecting rods (11) are hinged to different second sliders (13).

3. The multimedia teaching device according to claim 2, characterized in that: The multimedia all-in-one machine (2) is vertically equipped with limit rods (4) on both the left and right sides. Both limit rods (4) are fixed to the inner side wall of the box (1) by the upper stop block (3) and the lower stop block (6). The left end of the support block (5) is fitted on the left limit rod (4) and slides up and down with it. The right end of the support block (5) is fitted on the right limit rod (4) and slides up and down with it.

4. The multimedia teaching device according to claim 2 or 3, characterized in that: It also includes a mounting plate (18) installed on the back of the multimedia all-in-one machine (2), which is fixed to the rear top of the support block (5) by a number of connecting plates (17).

5. The multimedia teaching device according to claim 1, characterized in that: The front side wall of the box (1) is provided with a fixing groove, and a magnetic whiteboard is installed in the fixing groove.

6. The multimedia teaching device according to claim 1, characterized in that: The support frame (7) has a "⊥" shaped structure.

7. The multimedia teaching device according to claim 6, characterized in that: The upper end of the cross-section of the chute is circular, and the lower end is rectangular, with the width of the rectangle being smaller than the diameter of the circle.

8. The multimedia teaching device according to claim 6 or 7, characterized in that: The upper wall of the slot is vertically fixed with a rod (9), and the top of the ball (15) is provided with a slot for inserting and locking the rod (9).

9. The multimedia teaching device according to claim 8, characterized in that: A rubber pad (16) is fixed to the inner wall of the slot.

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