Standing wave demonstration instrument for teaching
By designing the protective box structure and the method of spiral rods driving the glass cover into the protective box, the problem of fragility of the glass tube during the carrying process of the standing wave demonstration instrument is solved, effectively protecting the glass cover and reducing limitations.
Patent Information
- Application Number
- CN202420869126.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-25
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-25
AI Technical Summary
During the carrying process, the existing standing wave demonstrator is susceptible to external forces to cause the glass tube to break, lack of protective measures, and has great limitations, which is unfavorable to promote and use.
A standing wave demonstration instrument for teaching is designed, adopting a protective box structure, with built-in pallets, screws, screws and covers. The pallets and display glass covers are driven down through the screw, and enter the protective box to protect the glass. Cover to avoid shattering.
It effectively protects the display glass cover to avoid fragmentation due to external forces during carrying, reduces limitations, and improves the portability and promotion of the equipment.
Smart Images
Figure CN222462227U_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of standing wave demonstrators, and in particular to a standing wave demonstrator for teaching. Background Art
[0002] Standing waves refer to a distribution state formed along a transmission line by two waves (not necessarily radio waves) with the same frequency and opposite transmission directions. One of the waves is generally a reflection of the other wave. Antinodes appear at the point where the voltages (or currents) of the two waves are added, and nodes form at the point where the voltages (or currents) of the two waves are subtracted. On the waveform, the positions of nodes and antinodes remain unchanged, giving the impression of "standing still", but its instantaneous value changes with time. If the amplitudes of the two waves are equal, the amplitude of the nodes is zero.
[0003] However, in practical applications, most existing standing wave demonstrators usually use glass tubes to show the changes of sound waves. The glass tubes themselves are in a natural environment. Therefore, when the standing wave demonstrator is carried, the glass tubes are easily affected by external forces and break. There is a lack of corresponding protection measures, so the carrying is very limited, which is not conducive to promotion and use.
[0004] Therefore, those skilled in the art provide a standing wave demonstrator for teaching to solve the problems raised in the above background technology. Utility Model Content
[0005] In order to solve the problem that the glass tube of the standing wave demonstrator proposed in the above background technology is easily broken by external force during carrying, lacks corresponding protection measures, and is therefore very limited in carrying and not conducive to promotion and use, the present application provides a standing wave demonstrator for teaching.
[0006] A standing wave demonstrator for teaching provided by the present application adopts the following technical solution: it includes a protective box, a support plate is slidably installed on the inner wall of the protective box, two support blocks are fixedly connected to the top side of the support plate, the top sides of the two support blocks are fixedly connected to the same display glass cover, a loudspeaker is installed on the left side of the display glass cover, an audio regulator is fixedly installed on the left side of the protective box, the audio regulator and the loudspeaker are linearly plugged together, a spiral rod is fixedly connected to the inner wall of the bottom side of the protective box, the spiral rod is threadedly connected to the support plate, the right end of the display glass cover is fixedly connected to a feeding pipe, and the inner wall of the feeding pipe is in contact with a sealing plug.
[0007] Preferably, the top side of the protective box is hingedly connected to two cover plates, the top sides of the two cover plates are provided with two grooves, the inner walls of the four grooves are fixedly connected to magnetic blocks, and the tops of both sides of the protective box are fixedly connected to iron sheets.
[0008] Preferably, the left and right inner walls of the protection box are fixedly connected with clamping rods, the left and right sides of the support plate are provided with clamping grooves, and the two clamping rods are in contact with the inner walls of the two clamping grooves respectively.
[0009] Preferably, two springs are fixedly connected to the inner wall of the bottom side of the protection box, and the top ends of the two springs are fixedly connected to the bottom side of the support plate.
[0010] Preferably, a hexagonal transmission block is fixedly connected to the top end of the spiral rod.
[0011] In summary, this application includes the following beneficial technical effects:
[0012] 1. By setting a spiral rod, open the sealing plug, inject the foam ball from the feeding pipe into the display glass cover, and then plug the two ends of the adapted wire into the loudspeaker and the audio regulator respectively. When the audio regulator is working, the sound is output from the loudspeaker to the display glass cover. At this time, the foam ball inside the display glass cover vibrates under the action of the sound, and as the output power of the audio regulator changes, the vibration amplitude of the foam ball also changes. In this way, the demonstration work is completed, the wire is pulled out, and the spiral rod is twisted. When the spiral rod rotates, it drives the support plate to move downward. The support plate cooperates with the support block to drive the display glass cover to move downward and be collected into the protective box. The protective box can be used to protect the display glass cover to avoid the display glass cover being broken by external force during carrying, thereby reducing limitations and facilitating popularization and use.
[0013] 2. By setting the cover, when the display glass cover is put into the protective box, the two cover plates cooperate with each other to close the top side of the protective box, thereby further improving the comprehensive protection of the display glass cover during carrying. The magnetic attraction between the magnetic block and the iron sheet can prevent the cover from opening during carrying, thereby improving the stability of the cover when it is closed. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the appearance structure of a standing wave demonstrator for teaching in an embodiment of the present application;
[0015] Figure 2 It is a schematic cross-sectional view of a standing wave demonstrator for teaching in an embodiment of the present application;
[0016] Figure 3 It is a teaching standing wave demonstration instrument in the embodiment of the present application. Figure 2 Schematic diagram of the structure with part A enlarged.
[0017] Explanation of the reference numerals: 1. protective box; 2. support plate; 3. support block; 4. display glass cover; 5. loudspeaker; 6. audio regulator; 7. screw rod; 8. cover plate; 9. magnetic block; 10. clamping rod; 11. spring; 12. hexagonal transmission block. DETAILED DESCRIPTION
[0018] The following will be combined with the attached Figure 1-3 The technical solution of the utility model is described clearly and completely. Obviously, the described embodiments are part of the embodiments of the utility model, not all of them. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] The present application embodiment discloses a standing wave demonstrator for teaching, referring to Figure 1-3 , including a protective box 1, the inner wall of the protective box 1 is slidably mounted with a support plate 2, the top side of the support plate 2 is fixedly connected with two support blocks 3, the top sides of the two support blocks 3 are fixedly connected with the same display glass cover 4, a loudspeaker 5 is installed on the left side of the display glass cover 4, an audio regulator 6 is fixedly installed on the left side of the protective box 1, the audio regulator 6 and the loudspeaker 5 are linearly plugged, a spiral rod 7 is fixedly connected to the inner wall of the bottom side of the protective box 1, the spiral rod 7 is threadedly connected to the support plate 2, the right end of the display glass cover 4 is fixedly connected with a feeding pipe, and the inner wall of the feeding pipe is in contact with a sealing plug; by setting the spiral rod 7, the sealing plug is opened, the foam ball is injected from the feeding pipe into the inside of the display glass cover 4, and then the two ends of the adapted wire are respectively connected to the expansion The speaker 5 and the audio regulator 6 are plugged in. When the audio regulator 6 is working, the sound is output from the loudspeaker 5 to the display glass cover 4. At this time, the foam ball inside the display glass cover 4 vibrates under the action of the sound, and as the output power of the audio regulator 6 changes, the vibration amplitude of the foam ball also changes. In this way, the demonstration operation is completed, the wires are pulled out, and the spiral rod 7 is twisted. When the spiral rod 7 rotates, it drives the support plate 2 to move downward. The support plate 2 cooperates with the support block 3 to drive the display glass cover 4 to move downward and be collected into the protective box 1. The protective box 1 can be used to protect the display glass cover 4 to prevent the display glass cover 4 from being broken by external forces during carrying, thereby reducing limitations and facilitating popularization and use.
[0020] In the present application, the top side hinge of the protective box 1 is connected to two cover plates 8, and two grooves are provided on the top sides of the two cover plates 8. The inner walls of the four grooves are fixedly connected to magnetic blocks 9, and the tops of both sides of the protective box 1 are fixedly connected to iron sheets. By setting the cover plates 8, when the display glass cover 4 is put into the protective box 1, the two cover plates 8 cooperate with each other to close the top side of the protective box 1, thereby further improving the comprehensiveness of the protection of the display glass cover 4 during carrying. The magnetic attraction between the magnetic blocks 9 and the iron sheet can prevent the cover plates 8 from opening during carrying, thereby improving the stability of the cover plates 8 when closed.
[0021] In the present application, the left and right inner walls of the protective box 1 are fixedly connected with a clamping rod 10, and the left and right sides of the support plate 2 are provided with a clamping slot, and the two clamping rods 10 are respectively in contact with the inner walls of the two clamping slots; by setting the clamping rod 10 and the clamping slot, when the support plate 2 moves up or down, the clamping rod 10 and the clamping slot cooperate with each other to enable the support plate 2 to maintain vertical movement to avoid deviation.
[0022] In the present application, two springs 11 are fixedly connected to the inner wall of the bottom side of the protective box 1, and the top ends of the two springs 11 are fixedly connected to the bottom side of the support plate 2; by setting the springs 11, when the support plate 2 moves upward, the rebound force of the springs 11 can reduce the pressure received by the screw rod 7 and the support plate 2 at the meshing point, thereby avoiding the occurrence of misaligned teeth that affect the transmission.
[0023] In the present application, a hexagonal transmission block 12 is fixedly connected to the top of the spiral rod 7; by providing the hexagonal transmission block 12, it is convenient for workers to use tools to twist the spiral rod 7, thereby improving the convenience of operation.
[0024] The standard parts used in the utility model can all be purchased from the market, and special-shaped parts can be customized according to the instructions and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt the conventional models in the existing technology, and the circuit connection adopts the conventional connection method in the existing technology, which will not be described in detail here.
[0025] The implementation principle of a teaching standing wave demonstrator according to an embodiment of the present application is as follows: when in use, open the sealing plug, inject the foam ball from the feeding pipe into the display glass cover 4, and then plug the two ends of the adapted wire into the loudspeaker 5 and the audio regulator 6 respectively. When the audio regulator 6 is working, the sound is output from the loudspeaker 5 to the display glass cover 4. At this time, the foam ball inside the display glass cover 4 vibrates under the action of the sound, and as the output power of the audio regulator 6 changes, the vibration amplitude of the foam ball also changes, thereby completing the demonstration operation, unplug the wire, twist the spiral rod 7, and when the spiral rod 7 rotates, it drives the support plate 2 to move downward, and the support plate 2 cooperates with the support block 3 to drive the display glass cover 4 to move downward and be stored in the protective box 1. The protective box 1 can be used to protect the display glass cover 4 to prevent the display glass cover 4 from being affected by external forces during carrying. When the display glass cover 4 is put into the protective box 1, the two cover plates 8 cooperate with each other to close the top side of the protective box 1, so as to further improve the comprehensive protection of the display glass cover 4 during carrying. The magnetic attraction between the magnetic block 9 and the iron sheet can prevent the cover plate 8 from opening during carrying, thereby improving the stability of the cover plate 8 when closed. When the support plate 2 moves up or down, the card rod 10 and the card slot cooperate with each other to keep the support plate 2 moving in the vertical direction to avoid deviation. When the support plate 2 moves upward, the rebound force of the spring 11 can reduce the pressure received by the meshing point of the spiral rod 7 and the support plate 2, thereby avoiding the occurrence of misaligned teeth affecting the transmission. The hexagonal transmission block 12 can facilitate workers to use tools to twist the spiral rod 7, thereby improving the convenience of operation.
[0026] Finally, a few points should be explained: First, in the description of this application, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;
[0027] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures involved in the embodiments disclosed in the present invention are involved, and other structures can refer to the usual design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other.
Claims
1. A standing wave demonstrator for teaching, comprising a protective box (1), characterized in that: A support plate (2) is slidably mounted on the inner wall of the protection box (1) up and down, two support blocks (3) are fixedly connected to the top side of the support plate (2), the top sides of the two support blocks (3) are fixedly connected to the same display glass cover (4), a loudspeaker (5) is mounted on the left side of the display glass cover (4), an audio regulator (6) is fixedly mounted on the left side of the protection box (1), the audio regulator (6) and the loudspeaker (5) are linearly plugged, a spiral rod (7) is fixedly connected to the inner wall of the bottom side of the protection box (1), the spiral rod (7) is threadedly connected to the support plate (2), a feeding pipe is fixedly connected to the right end of the display glass cover (4), and a sealing plug is contacted with the inner wall of the feeding pipe.
2. A teaching standing wave demonstrator according to claim 1, characterized in that: The top side of the protection box (1) is hingedly connected to two cover plates (8), the top sides of the two cover plates (8) are each provided with two grooves, the inner walls of the four grooves are each fixedly connected to an iron magnet (9), and the tops of both sides of the protection box (1) are fixedly connected to iron sheets.
3. A teaching standing wave demonstrator according to claim 1, characterized in that: The inner walls on the left and right sides of the protection box (1) are both fixedly connected with clamping rods (10), and the left and right sides of the support plate (2) are both provided with clamping grooves, and the two clamping rods (10) are respectively in contact with the inner walls of the two clamping grooves.
4. A teaching standing wave demonstrator according to claim 1, characterized in that: Two springs (11) are fixedly connected to the inner wall of the bottom side of the protection box (1), and the top ends of the two springs (11) are fixedly connected to the bottom side of the support plate (2).
5. A standing wave demonstration apparatus for teaching according to claim 1, characterized in that: The top end of the spiral rod (7) is fixedly connected with a hexagonal transmission block (12).