A demonstration board for music teaching

Abstract

This utility model discloses a demonstration board for music teaching, comprising: a magnetic writing board installed inside a back panel; two sets of erasable whiteboards symmetrically arranged about the central axis of the back panel and slidably mounted on the back panel; the magnetic writing board located between the erasable whiteboard and the back panel; a telescopic assembly whose top end is detachably connected to the bottom of the back panel; and a movable base with an adjustment assembly inside its hollow interior, and the adjustment assembly and the telescopic assembly being connected by gear transmission. This utility model solves the problem of cumbersome adjustment and inconvenience for learning and appreciation associated with existing teaching boards by providing a demonstration board for music teaching.

Description

Technical Field

[0001] This utility model relates to the field of music technology, specifically a demonstration board for music teaching. Background Technology

[0002] A music demonstration board is a tool specifically designed for music teaching. It typically consists of a movable writing board that allows teachers to visually draw or write teaching content designs on the whiteboard, helping them to conduct music teaching more effectively or helping music lovers to understand and appreciate music more deeply.

[0003] In the prior art, music demonstration boards are usually adjustable in width for the convenience of teaching. For example, application number CN202120314976.1 describes a music appreciation teaching board where the length of the crossbar can be adjusted according to the width of the teaching board and fixed by a locking sleeve. However, the device has the following drawbacks: after adjustment, the teaching board needs to be fixed to the mounting frame by adjusting the knob. If the position of the teaching board needs to be adjusted or replaced, the bolts of the adjusting knob, the crossbar, and the sleeve need to be operated one by one. The overall operation is relatively cumbersome and time-consuming. Especially when the content of the music teaching board needs to be quickly switched or moved out of the music teaching room, this adjustment method may affect the efficiency of music teaching. The overall practicality is low and it is not conducive to music appreciation and learning. Utility Model Content

[0004] One object of this invention is to solve at least the aforementioned problems and / or defects, and to provide at least the advantages described below.

[0005] To achieve these objectives and other advantages according to this utility model, a demonstration board for music teaching is provided, comprising: a magnetic writing board installed within a back panel, and further comprising:

[0006] Two sets of erasable whiteboards are symmetrically arranged about the central axis of the back plate and are slidably mounted on the back plate, with the magnetic writing board located between the erasable whiteboard and the back plate;

[0007] Telescopic assembly, the top of which is detachably connected to the bottom of the back panel;

[0008] The movable base has an adjustment component inside its hollow interior, and the adjustment component is connected to the telescopic component by a gear transmission.

[0009] Preferably, the structure of the back plate includes:

[0010] The outer frame has an open shape, with a horizontal sliding bar on the upper half and a magnetic writing board embedded in the lower half of the outer frame.

[0011] Gear I, which is rotatably mounted on the central axis of the outer frame and located directly above the slide bar;

[0012] The structure of the erasable whiteboard includes:

[0013] Whiteboard I has a notch-shaped slide rail I on its rear side, and the size of slide rail I matches that of slide rod to enable whiteboard I to slide on the left side of the outer frame. An L-shaped rack I extends from the top of whiteboard I, and the upper end of rack I meshes with the lower end of gear I.

[0014] Whiteboard II has a notch-shaped slide rail II on its rear side, and the size of slide rail II matches that of slide rod to enable whiteboard I to slide on the right side of the outer frame. An L-shaped rack II extends from the rear side of whiteboard II, and the lower end of rack II meshes with the upper end of gear I.

[0015] Preferably, the back plate structure further includes: a limiting block with a threaded through hole at the bottom;

[0016] The structure of the telescopic component includes:

[0017] The threaded rod is mounted in the movable base via a bearing, and only the upper half of the threaded rod is threaded. The threaded rod is threadedly connected to the limit block.

[0018] Gear II, which is a helical gear, is fixedly installed at the bottom end of the threaded rod;

[0019] The structure of the adjustment component includes:

[0020] A rotating shaft is rotatably mounted inside the movable base via a bearing, and a handle is provided on one end of the rotating shaft on the outside of the movable base;

[0021] Gear III is a helical gear and is fixedly mounted on the other side of the shaft. Gear III meshes with gear II.

[0022] This utility model has at least the following beneficial effects:

[0023] This device, through the combined use of a magnetic writing board and an erasable whiteboard, meets diverse teaching and presentation needs. It allows for easy and quick adjustment of the display board width via a simple sliding mechanism. The gear transmission connection between the telescopic and adjusting components enables flexible adjustment of the display board height. The movable base facilitates the movement of the display board within the classroom, providing a convenient tool for music teaching.

[0024] Other advantages, objectives and features of this invention will be partly apparent from the following description, and partly understood by those skilled in the art through study and practice of this invention. Attached Figure Description

[0025] Figure 1 This is a schematic diagram of the overall structure of this utility model in its closed state;

[0026] Figure 2 This is a schematic cross-sectional view of the overall structure of this utility model in the closed state;

[0027] Figure 3 This is a schematic diagram of the rear view of the overall structure of this utility model in the closed state;

[0028] Figure 4 This is a schematic diagram of the overall structure of this utility model in its open state;

[0029] Figure 5 This is a cross-sectional view of the overall structure of this utility model in an open state;

[0030] Figure 6 This is a schematic diagram of the back of the overall structure of this utility model in the opened state;

[0031] Figure 7 For the present utility model Figure 5 Enlarged structural diagram at point A;

[0032] Figure 8 This is a schematic diagram of the back structure of the erasable whiteboard of this utility model when it is opened and disassembled.

[0033] The markings in the diagram are: 1. Magnetic writing board, 2. Back panel, 21. Outer frame, 22. Slide bar, 23. Gear I, 24. Limiting block, 3. Erasable whiteboard, 31. Whiteboard I, 311. Slide rail I, 312. Rack I, 32. Whiteboard II, 321. Slide rail II, 322. Rack II, 4. Telescopic assembly, 41. Threaded rod, 42. Gear II, 5. Moving base, 6. Adjustment assembly, 61. Rotating shaft, 62. Handle, 63. Gear III, 7. Handle, 8. Drawer, 9. Rectangular block, 91. Bolt hole. Detailed Implementation

[0034] The present invention will now be described in further detail with reference to the accompanying drawings, so that those skilled in the art can implement it based on the description.

[0035] It should be understood that terms such as “having,” “comprising,” and “including” as used herein do not exclude the presence or addition of one or more other elements or combinations thereof.

[0036] It should be noted that in the description of this utility model, the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description. They do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0037] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "installed", "equipped with", "sleeved / connected", "connected", etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.

[0038] Furthermore, in this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Moreover, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0039] The following is a detailed description of this novel experimental device with reference to the accompanying drawings:

[0040] Figure 1-8 This invention illustrates a demonstration board for music teaching, comprising: a magnetic writing board 1, which is installed inside a back panel 2, and further comprising:

[0041] Two sets of erasable whiteboards 3 are symmetrically arranged about the central axis of the back plate 2 and are slidably mounted on the back plate 2. The magnetic writing board 1 is located between the erasable whiteboards 3 and the back plate 2.

[0042] Telescopic component 4, the top of which is detachably connected to the bottom of back panel 2;

[0043] The movable base 5 has an adjustment component 6 inside its hollow interior, and the adjustment component 6 is connected to the telescopic component 4 by gear transmission.

[0044] Working principle:

[0045] The operator first moves the demonstration board to the desired location using the movable base 5, and then operates the adjustment component 6 to drive the telescopic component 4 to extend and retract using the principle of gear transmission, thereby adjusting the height of the demonstration board back panel 2 to ensure that the demonstration board is at a comfortable teaching height, making it convenient for teachers to write and students to view.

[0046] When more content needs to be displayed or part of the content on the magnetic writing board 1 needs to be covered, the erasable whiteboard 3 can be slid to the sides or closer to the central axis of the backboard 2. Teachers can write music teaching content, such as song lyrics and key points of music appreciation, on the erasable whiteboard 3. Combined with the magnetic writing board 1 used for display and teaching with magnetic teaching aids (such as magnetic musical notes, metronome models, etc.), the flexibility and diversity of teaching are increased.

[0047] In practical use, the erasable whiteboard 3 is equipped with a handle 7 for easy pushing. This device combines a magnetic writing board 1 and an erasable whiteboard 3. While existing transparent film bags are convenient for placing sheet music, they may not fit well for sheet music of special sizes or irregular shapes, resulting in unstable placement or inability to place the sheet music. In addition, long-term use of film bags may lead to aging and damage, affecting the protection and display effect of the sheet music. The magnetic writing board 1 of this device can not only use magnetic teaching aids to intuitively display music knowledge (such as placing magnetic notes to explain scales, chords, etc., or attaching sheet music of different shapes and sizes through magnetic components), but also write lyrics, music theory, and other content on the erasable whiteboard 3, meeting different teaching needs.

[0048] ② In actual use, the wheels of the movable base 5 are selected to be more flexible omnidirectional wheels.

[0049] ③ In actual use, there are two symmetrical drawers 8 at the bottom, which can be used to store teaching aids (such as writing pens, magnets, musical note models, etc.).

[0050] In summary, this device, through the combined use of the magnetic writing board 1 and the erasable whiteboard 3, meets diverse teaching and presentation needs; the gear transmission connection between the telescopic component 4 and the adjusting component 6 enables flexible adjustment of the presentation board height; and the movable base 5 facilitates the movement of the presentation board in the classroom, providing a convenient tool for music teaching.

[0051] As described above, the structure of the back plate 2 includes:

[0052] An open-shaped outer frame 21 has a horizontal sliding bar 22 on its upper half, and a magnetic writing board 1 is embedded in the lower half of the outer frame 21.

[0053] Gear I 23 is rotatably mounted on the central axis of the outer frame 21 and located directly above the slide bar 22;

[0054] The structure of the erasable whiteboard 3 includes:

[0055] The whiteboard I31 has a notch-shaped slide rail I311 on its rear side, and the slide rail I311 matches the size of the slide rod 22, so that the whiteboard I31 is slidably connected to the left side of the outer frame 21. The top of the whiteboard I31 extends into an L-shaped rack I312, and the upper end of the rack I312 meshes with the lower end of the gear I23.

[0056] Whiteboard II 32 has a notched slide rail II 321 on its rear side, and the slide rail II 321 matches the size of the slide rod 22 to enable the whiteboard I 31 to slide on the right side of the outer frame 21. An L-shaped rack II 322 extends from the rear side of the whiteboard II 32, and the lower end of the rack II 322 meshes with the upper end of the gear I 23.

[0057] Working principle:

[0058] When the operator pushes the whiteboard I31 outward horizontally through the handle 7, the slide rail I311 on the whiteboard I31 moves horizontally along the guide direction of the slide rod 22 on the outer frame 21. At this time, the L-shaped rack I312 extending from the top of the whiteboard I31 will move together with the whiteboard I31. Since the rack I312 meshes with the gear I23 installed on the central axis of the outer frame 21, the movement of the rack I312 will drive the gear I23 to rotate.

[0059] When gear I23 rotates in the forward direction, the L-shaped rack II322 extending from the rear side of whiteboard II32, which meshes with the upper end of gear I23, will be subjected to force and slide. Under the action of rack II322, whiteboard II32 will cause slide rail II321 to move along slide rod 22 on outer frame 21 in the opposite direction to whiteboard I31. Thus, whiteboard I31 and whiteboard II32 move synchronously to both sides, realizing the opening of erasable whiteboard 3.

[0060] Conversely, when the operator pushes the whiteboard I31 inward horizontally by the handle, the movement of rack I312 will drive gear I23 to rotate. When gear I23 rotates in the opposite direction, whiteboard I31 and whiteboard II32 will move towards each other under the drive of rack I312 and rack II322, thus closing the erasable whiteboard 3.

[0061] Among them, ① this method of moving whiteboard I 31 to drive whiteboard II 32 utilizes the transmission principle of gear and rack, with the teeth of the gear meshing with the teeth of the rack, thereby converting the rotation of the gear into the linear motion of the rack, making the operation more convenient and efficient, while also ensuring the synchronicity and stability of the movement of the two whiteboards.

[0062] ② The slide bar 22 serves as the track between slide rail I 311 and slide rail II 321, restricting the erasable whiteboard 3 to move left and right only along the direction of the slide bar 22, thus ensuring the linearity and stability of the whiteboard's movement.

[0063] In summary, through the meshing transmission of a gear I23 with racks I312 and II322, and the cooperation of the slide rail and slide rod 22, the whiteboard I31 and whiteboard II32 can be symmetrically unfolded or closed about the central axis of the back panel 2. This allows for flexible display or obscuring of the content on the magnetic writing board 1 embedded in the lower half of the outer frame 21, facilitating quick switching of displayed content by teachers during teaching and improving teaching efficiency.

[0064] As described above, the structure of the back plate 2 also includes: a limiting block 24 with a threaded through hole at the bottom;

[0065] The structure of the telescopic component 4 includes:

[0066] The threaded rod 41 is mounted in the movable base 5 via a bearing, and only the upper half of the threaded rod 41 is threaded. The threaded rod 41 is threadedly connected to the limit block 24.

[0067] Gear II 42, which is a helical gear, is fixedly installed at the bottom end of the threaded rod 41;

[0068] The structure of the adjustment component 6 includes:

[0069] A rotating shaft 61 is rotatably mounted inside the movable base 5 via a bearing, and a handle 62 is provided on one end of the rotating shaft 61 on the outside of the movable base 5.

[0070] Gear Ⅲ63 is a helical gear and is fixedly mounted on the other side of the rotating shaft 61. Gear Ⅲ63 meshes with gear Ⅱ42.

[0071] Working principle:

[0072] The operator rotates the handle 62 in the forward direction on the outside of the movable base 5 (in actual use, the rotation can be assisted by using a wrench or a detachable foot pedal component). The handle 62 drives the gear III 63 on it to rotate. Since gear II 42 and gear III 63 mesh with each other, the rotation of gear III 63 drives gear II 42 to rotate, which in turn causes the threaded rod 41 to rotate.

[0073] When the threaded rod 41 rotates, according to the thread transmission principle, the thread in the limit block 24 will slide along the thread of the threaded rod 41 (the top of the telescopic component 4 and the bottom of the back plate 2 are detachably connected by a threaded connection), thereby driving the back plate 2 to rise or fall, thus realizing the adjustment of the height of the demonstration board.

[0074] Once the demonstration board is adjusted to the appropriate height, the operator releases the handle 62 to stop rotating it, thus maintaining the demonstration board at the current height. Conversely, the operator can lower the height of the demonstration board by rotating the handle 62 in the opposite direction.

[0075] In actual use, to avoid the entire back plate 2 being supported only by the threaded rod 41, two rectangular blocks 9 with through holes are symmetrically arranged on the back of the back plate 2 about the central axis. Support columns 53 are set at the corresponding positions at the bottom of the movable part. The support columns 53 are fitted inside the rectangular blocks 9 and provide support for the back plate 2 from both sides. When the back plate 2 is adjusted to a certain height, it can be fixed by bolts through the bolt holes 91 on one side of the rectangular block 9 and the bolt holes between the support columns 53 to achieve height limit fixation.

[0076] In summary, this device allows for continuous adjustment of the demonstration board height through a simple operating handle 62, accommodating the needs of teachers of different heights and in different teaching scenarios, thus improving the convenience of teaching.

[0077] Although the embodiments of this utility model have been disclosed above, they are not limited to the applications listed in the specification and embodiments. They can be applied to various fields suitable for this utility model. For those skilled in the art, other modifications can be easily made. Therefore, without departing from the general concept defined by the claims and their equivalents, this utility model is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A demonstration board for music teaching, comprising: A magnetic writing board, installed inside a back plate, is characterized by further comprising: Two sets of erasable whiteboards are symmetrically arranged about the central axis of the back plate and are slidably mounted on the back plate, with the magnetic writing board located between the erasable whiteboard and the back plate; Telescopic assembly, the top of which is detachably connected to the bottom of the back panel; The movable base has an adjustment component inside its hollow interior, and the adjustment component is connected to the telescopic component by a gear transmission.

2. The demonstration board for music teaching according to claim 1, characterized in that, The structure of the back plate includes: The outer frame has an open shape, with a horizontal sliding bar on the upper half and a magnetic writing board embedded in the lower half of the outer frame. Gear I, which is rotatably mounted on the central axis of the outer frame and located directly above the slide bar; The structure of the erasable whiteboard includes: Whiteboard I has a notch-shaped slide rail I on its rear side, and the size of slide rail I matches that of slide rod to enable whiteboard I to slide on the left side of the outer frame. An L-shaped rack I extends from the top of whiteboard I, and the upper end of rack I meshes with the lower end of gear I. Whiteboard II has a notch-shaped slide rail II on its rear side, and the size of slide rail II matches that of slide rod to enable whiteboard I to slide on the right side of the outer frame. An L-shaped rack II extends from the rear side of whiteboard II, and the lower end of rack II meshes with the upper end of gear I.

3. The demonstration board for music teaching according to claim 1, characterized in that, The structure of the back plate also includes: a limiting block with a threaded through hole at the bottom; The structure of the telescopic component includes: The threaded rod is mounted in the movable base via a bearing, and only the upper half of the threaded rod is threaded. The threaded rod is threadedly connected to the limit block. Gear II, which is a helical gear, is fixedly installed at the bottom end of the threaded rod; The structure of the adjustment component includes: A rotating shaft is rotatably mounted inside the movable base via a bearing, and a handle is provided on one end of the rotating shaft on the outside of the movable base; Gear III is a helical gear and is fixedly mounted on the other side of the shaft. Gear III meshes with gear II.

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