Teaching loudspeaker

Abstract

The teaching loudspeaker comprises a loudspeaker body, a loudspeaking frame is arranged on one side of the outer surface of the loudspeaker body, a protective cover frame is arranged on the outer side of the loudspeaking frame in a nested mode, a filter screen is arranged on the protective cover frame, a fixing opening is formed in the protective cover frame, a first positioning bolt is arranged in the fixing opening, and a second positioning bolt is arranged in the fixing opening. A first threaded groove in threaded connection with the first positioning bolt is formed in the outer surface of the loudspeaker frame, the loudspeaker body is provided with a control switch, an adjusting knob, a plug wire hole and a charging jack, and a microphone plug wire head is inserted into the plug wire hole. According to the utility model, through the arrangement of the fixed seat, the positioning frame, the positioning groove and the movable mechanism and the arrangement of the magnet structure, a stable and firm positioning effect can be achieved after the microphone plug is plugged in the plug hole, so that the situation that the wiring plug slips off due to accidental touch in the teaching process of a teacher can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of teaching aids, in particular to a teaching megaphone. Background Technique

[0002] A megaphone is a device used to amplify sound. Its main function is to amplify sound so that the sound can be transmitted farther. Compared with a speaker, a megaphone has a longer wavelength and stronger penetration power. Therefore, it is suitable for use in occasions where sound needs to be transmitted over a long distance. For example, in teaching, since teachers have to give continuous lectures for multiple classes, their throats are extremely vulnerable to damage. Coupled with the fact that some classrooms are large in area, in order to ensure that all students can clearly hear the lecture content, teachers often equip themselves with megaphones to give lectures. This can not only reduce the damage to the throat but also ensure that students can clearly hear the lecture content.

[0003] For some traditional teaching megaphones, due to the lack of a stable protection structure at the speaker position, some chalk dust will seep into the speaker position of the megaphone during the teacher's lecture, causing damage to the device. In addition, for traditional megaphones, there is a lack of an auxiliary positioning structure at the microphone plug-in wire position. During the teacher's lecture, it is very easy to accidentally touch the microphone wire, resulting in the slipping of the wiring position, thus interrupting the teacher's lecture rhythm and lacking stability in use. Content of the Utility Model

[0004] The purpose of the utility model is to solve the shortcomings existing in the prior art and to propose a teaching megaphone.

[0005] To achieve the above purpose, the utility model adopts the following technical scheme: A teaching megaphone includes a megaphone body. On one side of the outer surface of the megaphone body, there is a speaker frame. A protective cover frame is nested outside the speaker frame. A filter screen is arranged on the protective cover frame, and a fixing port is arranged on the protective cover frame. A positioning bolt one is arranged in the fixing port. A thread groove one that is threadedly connected to the positioning bolt one is arranged on the outer surface of the speaker frame. A control switch, an adjustment knob, a plug hole, and a charging jack are respectively arranged on the megaphone body. A microphone plug head is inserted into the plug hole. A tail seat is arranged on the microphone plug head. A connecting wire is arranged on the tail seat. A fixing seat is arranged on the top of the megaphone body corresponding to the plug hole. On both sides of the top of the fixing seat, there are positioning frames. Positioning grooves are arranged on both positioning frames, and movable mechanisms are arranged between the two positioning frames and the fixing seat.

[0006] As a further description of the above technical solution:

[0007] A fixing buckle is arranged on the megaphone body, and a fixing belt is arranged on the fixing buckle.

[0008] As a further description of the above technical solution:

[0009] A clamping block is fixedly connected to the loudspeaker frame, and a clamping groove nested and matched with the clamping block is arranged on the inner surface of the protective cover frame.

[0010] As a further description of the above technical solution:

[0011] Both of the two positioning grooves and the tailstock are arranged in a nested and matched manner.

[0012] As a further description of the above technical solution:

[0013] The movable mechanism includes a movable groove arranged in the fixed seat. A movable block is nested and slidably connected in the movable groove, and a spring is connected between the inner wall of the movable groove and the outer surface of the movable block. The top of the movable block is fixedly connected to the positioning frame.

[0014] As a further description of the above technical solution:

[0015] Both ends of the fixed seat are provided with fixed notches. Fixed holes are arranged in both of the two fixed notches. Positioning bolts II are arranged in both of the two fixed holes. Threaded grooves II are arranged at both sides of the insertion hole on the top of the loudspeaker body. The two positioning bolts II and the two threaded grooves II are arranged in a corresponding threaded fit manner.

[0016] As a further description of the above technical solution:

[0017] Magnets are arranged at the connecting positions of the two positioning frames, and the magnets on the two positioning frames are arranged in a mutually attracting and matching manner.

[0018] The utility model has the following beneficial effects:

[0019] For this teaching loudspeaker, through the arrangement of the fixed port, positioning bolt I, and threaded groove I, and in cooperation with the arrangement of the clamping block and clamping groove structure, the protective cover frame can be stably and firmly installed on the outside of the loudspeaker frame. In this way, the filter screen can play a stable filtering and protective effect on the sound-emitting part of the entire loudspeaker, and can prevent chalk dust from entering the sound-emitting structure, playing a safe and stable protective role for it; through the arrangement of the fixed seat, positioning frame, positioning groove, and movable mechanism, and in cooperation with the arrangement of the magnet structure, after the microphone plug head is inserted into the insertion hole, a stable and firm positioning effect can be achieved on it. In this way, it can prevent the situation that the wiring plug slips off due to accidental touch during the teacher's lecture, improving the positioning stability of the plug, and thus improving the use convenience and safety of the entire loudspeaker structure. Description of the Drawings

[0020] Figure 1Schematic diagram of the overall structure of a teaching megaphone proposed by the present utility model;

[0021] Figure 2 Front view of a teaching megaphone proposed by the present utility model;

[0022] Figure 3 Of a teaching megaphone proposed by the present utility model Figure 2 Enlarged view of A in it.

[0023] Legend description:

[0024] 1. Megaphone body; 2. Fixed buckle; 3. Fixed belt; 4. Loudspeaker frame; 5. Protective cover frame; 6. Filter net; 7. Clamping block; 8. Card slot; 9. Fixed port; 10. Positioning bolt one; 11. Thread groove one; 12. Control switch; 13. Adjustment knob; 14. Wired hole; 15. Microphone plug head; 16. Tail seat; 17. Connecting wire; 18. Fixed seat; 19. Positioning frame; 20. Positioning groove; 21. Movable groove; 22. Movable block; 23. Spring; 24. Fixed notch; 25. Fixed hole; 26. Positioning bolt two; 27. Thread groove two; 28. Magnet; 29. Charging jack. Specific implementation manners

[0025] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0026] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model; the terms "first", "second", "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly defined and limited, the terms "installation", "connection", "connection" should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Referring to Figures 1-3 , an embodiment provided by the present utility model: a teaching megaphone, including a megaphone body 1, a loudspeaker bracket 4 is arranged on one side of the outer surface of the megaphone body 1. The loudspeaker bracket 4 is the part of the megaphone where the sound comes out. A protective cover bracket 5 is nested on the outside of the loudspeaker bracket 4. A filter screen 6 is arranged on the protective cover bracket 5. The protective cover bracket 5 covers the outside of the sound emitting part. In this way, the filter screen 6 can be stably coated on the outside of the sound emitting position, playing a role of dust-proof filtering, preventing chalk dust from entering the megaphone structure from the sound emitting position and affecting the equipment. A fixing hole 9 is arranged on the protective cover bracket 5, and a positioning bolt 10 is arranged in the fixing hole 9. A thread groove 11 for threaded connection with the positioning bolt 10 is arranged on the outer surface of the loudspeaker bracket 4. Screwing the positioning bolt 10 into the thread groove 11 can position and install the protective cover bracket 5 on the outside of the loudspeaker bracket 4. There are two corresponding positioning bolts 10 and thread grooves 11, which can ensure the stability of the positioning installation on both sides of the structure. On the megaphone body 1, a control switch 12, an adjustment knob 13, a jack 14, and a charging jack 29 are respectively arranged. The control switch 12 is the opening and closing switch structure of the megaphone, which can control the megaphone to turn on and work or turn off. The adjustment knob 13 is the adjustment structure for its volume size. As shown in the attached Figure 1 figure, at the position corresponding to the adjustment knob 13 on the top of the megaphone, there are indication marks from large to small, which is convenient for rotating and tuning operations. The charging jack 29 is the charging connection position of the whole megaphone. A microphone plug head 15 is inserted into the jack 14. A tail seat 16 is arranged on the microphone plug head 15, and a connecting wire 17 is arranged on the tail seat 16. The microphone plug head 15, the tail seat 16, and the connecting wire 17 form a microphone wiring structure, which is convenient for connecting with the megaphone, so as to achieve the effect of voice amplification, ensuring that the voice can be fully amplified during teaching and facilitating students to hear clearly. At the position corresponding to the jack 14 on the top of the megaphone body 1, a fixing seat 18 is arranged. On both sides of the top of the fixing seat 18, positioning brackets 19 are arranged. Positioning grooves 20 are arranged on both positioning brackets 19. The two positioning grooves 20 and the tail seat 16 are nested and matched. An active mechanism is arranged between the two positioning brackets 19 and the fixing seat 18. The active mechanism pushes the positioning grooves 20 on the two positioning brackets 19 to be stuck on the outside of the tail seat 16. In this way, a stable positioning effect can be achieved on the wiring plug, avoiding the situation of slipping due to accidental touch during use and improving the use stability of the wiring structure.

[0028] A fixing buckle 2 is arranged on the megaphone body 1, and a fixing belt 3 is arranged on the fixing buckle 2. The arrangement of the fixing belt 3 can facilitate wearing the whole megaphone on the waist, facilitating the teacher to operate and use it conveniently.

[0029] A clamping block 7 is fixedly connected to the speaker frame 4, and a clamping groove 8 nested and matched with the clamping block 7 is arranged on the inner surface of the protective cover frame 5. The arrangement of the clamping block 7 and the clamping groove 8 enables the protective cover frame 5 to be accurately and stably docked and installed with the speaker frame 4, and multiple groups of the clamping block 7 and the clamping groove 8 are correspondingly arranged.

[0030] The moving mechanism includes a moving groove 21 arranged in the fixed seat 18. A moving block 22 is nested and slidably connected in the moving groove 21, and a spring 23 is connected between the inner wall of the moving groove 21 and the outer surface of the moving block 22. The top of the moving block 22 is fixedly connected to the positioning frame 19. The elastic action of the spring 23 pushes the moving block 22 to drive the two positioning frames 19 to approach each other, so as to achieve a wrapping and positioning effect on the tailstock 16, make the plug head stably inserted into the wiring hole 14, and avoid the situation of slipping off.

[0031] Both ends of the fixed seat 18 are provided with fixed notches 24. Fixed holes 25 are arranged in both fixed notches 24. Positioning bolts II 26 are arranged in both fixed holes 25. Thread grooves II 27 are arranged on both sides of the wiring hole 14 at the top of the loudspeaker body 1. The two positioning bolts II 26 and the two thread grooves II 27 are arranged in a corresponding threaded fit. By screwing the positioning bolts II 26 into the thread grooves II 27, the fixed seat 18 can be positioned and installed at the corresponding position on the top of the loudspeaker body 1. The structure is installed stably and firmly, and is convenient and simple to use.

[0032] Magnets 28 are arranged at the connecting positions of the two positioning frames 19, and the magnets 28 on the two positioning frames 19 are arranged in an adsorption cooperation manner. The magnet 28 on one positioning frame 19 is the positive pole, and the magnet 28 on the other positioning frame 19 is the negative pole. The two adsorb each other and can be stably attached together, so as to avoid accidentally touching the positioning frames 19 and causing the two to separate, thereby unable to form a stable positioning effect on the plug head.

[0033] Working principle: When using the teaching megaphone, the protective cover frame 5 is sleeved on the outside of the speaker frame 4, so that the clamping block 7 is inserted into the card slot 8, and the positioning bolt 1 is passed through the fixing port 9 and screwed into the thread groove 11, then the protective cover frame 5 can be fixedly installed on the speaker frame 4. In this way, the filter net 6 can play a filtering and protective effect on the sound output position of the speaker, avoiding the entry of chalk dust. The microphone plug head 15 is inserted from the top opening position of the positioning slots 20 on the two positioning frames 19. With the setting of the moving mechanism, the two positioning frames 19 can be driven to separate from each other, so that it is convenient to insert the microphone plug head 15 into the plug hole 14. After insertion, the moving mechanism can drive the positioning frame 19 to reset, and the positioning slots 20 on the positioning frame 19 will cover the outside of the tail seat 16. With the assistance of the magnet 28, the positioning stability of the positioning frame 19 can be improved, which can play a positioning and anti-disconnection effect on the microphone wiring structure, enhance the stability of the microphone wiring, and is not easy to cause the microphone wiring to slip off due to accidental touch by the teacher during the lecture, thus improving the stability of the structure connection.

[0034] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A teaching loudspeaker, comprising a loudspeaker body (1), characterized in that: A speaker frame (4) is provided on one side of the outer surface of the loudspeaker body (1), a protective cover frame (5) is nested on the outer side of the loudspeaker frame (4), a filter screen (6) is provided on the protective cover frame (5), and a fixing opening (9) is provided on the protective cover frame (5), a positioning bolt (10) is provided in the fixing opening (9), a thread groove (11) threadedly connected to the positioning bolt (10) is provided on the outer surface of the loudspeaker frame (4), and a control switch (12), an adjustment knob (13), a wire insertion hole (14), A charging socket (29), a microphone plug (15) is plugged into the plug hole (14), a tail seat (16) is provided on the microphone plug head (15), a connecting line (17) is provided on the tail seat (16), a fixing seat (18) is provided at the top of the loudspeaker body (1) and at a position corresponding to the plug hole (14), positioning frames (19) are provided on both sides of the top of the fixing seat (18), positioning grooves (20) are provided on the two positioning frames (19), and a movable mechanism is provided between the two positioning frames (19) and the fixing seat (18).

2. A teaching loudspeaker according to claim 1, characterized in that: The loudspeaker body (1) is provided with a fixing buckle (2), and the fixing buckle (2) is provided with a fixing belt (3).

3. A teaching loudspeaker according to claim 1, characterized in that: A clamping block (7) is fixedly connected to the speaker frame (4), and a clamping groove (8) nested with the clamping block (7) is provided on the inner surface of the protective cover frame (5).

4. A teaching loudspeaker according to claim 1, characterized in that: The two positioning grooves (20) and the tailstock (16) are both arranged in a nested manner.

5. A teaching loudspeaker according to claim 1, characterized in that: The movable mechanism comprises a movable groove (21) arranged in a fixed seat (18), a movable block (22) is nested and slidably connected in the movable groove (21), a spring (23) is connected between the inner wall of the movable groove (21) and the outer surface of the movable block (22), and the top of the movable block (22) is fixedly connected to the positioning frame (19).

6. A teaching loudspeaker according to claim 1, characterized in that: Both ends of the fixing seat (18) are provided with fixing recesses (24), both fixing recesses (24) are provided with fixing holes (25), both fixing holes (25) are provided with two positioning bolts (26), and the top of the loudspeaker body (1) and at both sides of the wire insertion hole (14) are provided with two thread grooves (27), and the two positioning bolts (26) and the two thread grooves (27) are provided with corresponding threads.

7. A teaching loudspeaker according to claim 1, characterized in that: Magnets (28) are provided at the connecting positions of the two positioning frames (19), and the magnets (28) on the two positioning frames (19) are arranged to be mutually attracted and matched.

Images