CN-224232266-U - Acoustic teaching aid

Abstract

The utility model discloses an acoustic teaching aid, which relates to the field of teaching aids, and comprises a vacuum box, wherein a simulation tube is fixed in the vacuum box, the simulation tube comprises an organic glass tube, the organic glass tube is of a vertically penetrating design, and the organic glass tube is provided with two groups, can accurate reduction vacuum environment under sound transmission medium experimental scenario, in the experimentation, the nearly vacuum state can be built to the teaching aid, lets the student clearly observe the phenomenon that sound can't propagate this moment, later, this common medium of reintroducing air, through contrast experiment, students can obviously perceive sound and get the propagation again, so, when having effectively verified the air as the medium with vivid audio-visual mode, played key effect to sound transmission, promoted the teaching effect greatly.

Inventors

• Zheng Zaosong

Assignees

• 广州外国语学校

Dates

Publication Date

20260512

Application Date

20250517

Claims (6)

1. 1. The utility model provides an acoustic teaching aid, includes vacuum box (1), vacuum box (1) inside is fixed with simulation pipe (2), simulation pipe (2) are including organic glass pipe (21), organic glass pipe (21) are the design that runs through from top to bottom, organic glass pipe (21) are equipped with two sets of, two sets of organic glass pipe (21) junction fixedly connected with silica gel connecting piece (22), silica gel mesh pad (23) are fixed with in the surface paste of silica gel connecting piece (22).
2. 2. The acoustic teaching aid of claim 1, wherein a loudspeaker (24) is adhered and fixed on the inner wall of the bottom end of the organic glass tube (21), the loudspeaker (24) is electrically connected with a music core (25) by using an electric wire, and an antistatic small ball (26) is placed above the loudspeaker (24).
3. 3. An acoustic teaching aid according to claim 2, characterized in that the antistatic pellets (26) are provided in several groups and are placed evenly over the loudspeaker (24) and over the silica gel mesh pad (23).
4. 4. An acoustic teaching aid according to claim 3, wherein the vacuum box (1) comprises a box body (11), one side of the box body (11) is fixedly connected with two groups of supporting plates, each group of supporting plates is rotatably connected with a connecting piece (12) by using pins, one end of each connecting piece (12) is fixedly connected with a front cover plate (13), and the surface of each front cover plate (13) is fixedly connected with a handle (14).
5. 5. The acoustic teaching aid of claim 4, wherein an opening is formed in the top end of the box body (11), a negative pressure meter (15) is fixed in the opening, and an exhaust pipe (16) is fixedly connected to one end of the negative pressure meter (15).
6. 6. The acoustic teaching aid of claim 5, wherein a battery is electrically connected to the top of the musical movement (25), and the battery is used to supply power to the musical movement (25).

Description

Acoustic teaching aid Technical Field The utility model relates to the field of teaching aids, in particular to an acoustic teaching aid. Background The acoustic teaching aid is an auxiliary tool for teaching demonstration, experimental exploration and knowledge explanation, helps students understand abstract acoustic concepts by intuitively displaying acoustic phenomena and physical laws thereof, can dynamically present processes such as sound source vibration, medium transmission, energy conversion and the like, is suitable for physical classes and science popularization education activities of middle and primary schools, and is a bridge for theoretical teaching and practice experience. The existing acoustic teaching aid lacks a demonstration teaching aid capable of demonstrating whether sound can normally propagate in a vacuum environment, students cannot directly feel the teaching aid, and air is used as a medium for sound propagation in practice. Disclosure of utility model In order to achieve the purpose, the acoustic teaching aid comprises a vacuum box, wherein a simulation tube is fixed inside the vacuum box, the simulation tube comprises organic glass tubes, the organic glass tubes are in a vertically penetrating design, two groups of organic glass tubes are arranged, a silica gel connecting piece is fixedly connected to the joint of the two groups of organic glass tubes, and a silica gel mesh pad is fixedly adhered to the surface of the silica gel connecting piece. Preferably, the inner wall of the bottom end of the organic glass tube is pasted and fixed with a loudspeaker, the loudspeaker is electrically connected with a music machine core by utilizing an electric wire, and an antistatic small ball is placed above the loudspeaker. Preferably, the antistatic pellets are provided with several groups and are uniformly placed over the speaker and over the silica gel mesh pad. Preferably, the vacuum box comprises a box body, one side of the box body is fixedly connected with support plates, two groups of support plates are arranged, each group of support plates are rotationally connected with a connecting piece through pins, one end of each connecting piece is fixedly connected with a front cover plate, and the surface of each front cover plate is fixedly connected with a handle. Preferably, an opening is formed in the top end of the box body, a negative pressure meter is fixed in the opening, and one end of the negative pressure meter is fixedly connected with an exhaust pipe. Preferably, the top end of the music core is electrically connected with a battery, and the battery is used for supplying power to the music core. Compared with the prior art, the utility model has the beneficial effects that: In the physical acoustic teaching, in order to enable students to more intuitively understand the sound transmission principle, the novel acoustic teaching aid is carefully developed, has a unique simulation function, can accurately restore a sound transmission medium experiment scene in a vacuum environment, can create a nearly vacuum state in the experiment process, enables the students to clearly observe the phenomenon that the sound cannot be transmitted at the moment, and then introduces air which is a common medium, and through a comparison experiment, the students can obviously perceive that the sound is transmitted again, so that the key effect on the sound transmission is achieved when the air is effectively verified as a medium in a vivid and intuitive mode, and the teaching effect is greatly improved. Drawings The utility model is further described below with reference to the accompanying drawings: FIG. 1 is a schematic diagram of a first embodiment of the present utility model; FIG. 2 is a schematic diagram of a second embodiment of the present utility model; FIG. 3 is a schematic diagram of a simulated tube structure according to the present utility model; fig. 4 is a simulated tube disassembly of the present utility model. The anti-static vacuum box comprises a vacuum box body 1, a box body 11, a box body 12, a connecting piece 13, a front cover plate 14, a handle 15, a negative pressure meter 16, an exhaust pipe 2, a simulation pipe 21, a plastic glass pipe 22, a silica gel connecting piece 23, a silica gel mesh pad 24, a loudspeaker 25, a music machine core 26 and an anti-static ball. Detailed Description In order to more clearly illustrate the general inventive concept, reference will be made in the following detailed description, by way of example, to the accompanying drawings. Referring to fig. 1 to 4, the utility model provides an acoustic teaching aid, which comprises a vacuum box 1, wherein a simulation tube 2 is fixed inside the vacuum box 1, the simulation tube 2 comprises an organic glass tube 21, the organic glass tube 21 is in a vertically penetrating design, the organic glass tube 21 is provided with two groups, a silica gel connecting piece 22 is fixedly connected at the joint