MEMS loudspeaker with high moisture resistance

Abstract

The utility model discloses an MEMS horn with high moisture resistance, which belongs to the technical field of horns and comprises a shell, two sound production covers are fixedly assembled at the top of the shell, a cover plate is fixedly mounted on one side, far away from the sound production covers, of the shell through screws, and a plurality of heat dissipation grooves are uniformly formed in the inner wall of the cover plate. A positioning strip is fixedly assembled on the inner wall of the shell, and the inner wall of the positioning strip is fixedly connected with one end of a spring; the moistureproof operation is performed on the inner cavity of the shell through the moistureproof cotton plate, when the moistureproof cotton plate needs to be replaced, the pressing plate can be pulled to move upwards, a new moistureproof cotton plate is placed between the pressing plate and the positioning strip, and then the moistureproof cotton plate is stably positioned between the positioning strip and the pressing plate by means of resetting of the acting force of the spring. The replacement convenience is improved, so that the problem of insufficient safety caused by easy short circuit of internal electronic elements and line connection ports in a humid environment due to insufficient moisture resistance is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of loudspeakers, and in particular to a MEMS loudspeaker with high moisture resistance. Background Art

[0002] The broadcasting loudspeaker is widely used in collective activities, and the sound amplification thereof replaces the artificial shouting very well. The existing broadcasting loudspeaker generally comprises a loudspeaker main body shell, a loudspeaker base, a diaphragm, an armature, a drum paper and a mesh cover.

[0003] Existing speakers are not sufficiently moisture-proof after actual installation. Since speakers need to be installed in various locations, their insufficient moisture-proofness may cause short circuits in their internal electronic components and line connection ports when they are in a humid environment, thereby causing their safety to be insufficient.

[0004] To this end, we propose a MEMS speaker with high moisture resistance. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a MEMS speaker with high moisture resistance, which overcomes the deficiencies of the prior art and aims to solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a highly moisture-proof MEMS speaker, comprising a shell, two sound covers are fixedly installed on the top of the shell, a cover plate is fixedly installed on the side of the shell away from the sound cover by screws, a plurality of heat dissipation grooves are evenly opened on the inner wall of the cover plate, a positioning strip is fixedly installed on the inner wall of the shell, one end of a spring is fixedly connected to the inner wall of the positioning strip, the other end of the spring is fixedly connected to a round rod, a pressure plate is fixedly installed on the top of the round rod, and a moisture-proof cotton board is provided on the top of the positioning strip.

[0007] As a preferred technical solution of the utility model, a positioning frame is fixedly installed on the inner side of the cover plate, and clamping strips are fixedly installed on the four corners on the inner side of the shell. A dustproof net is attached to the inner side of the cover plate, and the dustproof net is arranged in the middle position between the clamping strip and the cover plate. The dustproof net covers several heat dissipation slots inside, and the clamping strip is made of elastic rubber.

[0008] By adopting the above technical solution, the dustproof net can be used to intercept foreign matter such as dust from the outside, thereby ensuring that it will not be discharged into the inner cavity of the shell and contact the electronic components inside it, thereby increasing the service life of the electronic components in the inner cavity of the shell.

[0009] As a preferred technical solution of the utility model, the number of the screws is four, and the four screws are symmetrically arranged on the outer side of the cover plate.

[0010] By adopting the above technical solution, the cover plate can be positioned from four different angles, thereby ensuring that the sound cover and the shell are firmly connected and will not come off at will.

[0011] As a preferred technical solution of the utility model, the pressing plate is arranged above the positioning strip, the moisture-proof cotton board is arranged in the middle position between the positioning strip and the pressing plate, the bottom of the moisture-proof cotton board is in contact with the top of the positioning strip, and the top of the moisture-proof cotton board is in contact with the bottom of the pressing plate.

[0012] By adopting the above technical solution, the moisture-proof cotton board can be stably positioned in the inner cavity of the shell by utilizing the cooperation of the positioning strip and the pressure plate, thereby ensuring that it can perform moisture-proof operations on the inner cavity of the shell and ensure that the inner cavity of the shell is in a dry state for a long time.

[0013] As a preferred technical solution of the utility model, a circular hole is opened on the inner wall of the positioning strip, the bottom end of the spring is fixedly connected to the bottom position of the circular hole, the outer diameter of the round rod is adapted to the inner wall diameter of the circular hole, and the positions of the round rod and the circular hole correspond.

[0014] By adopting the above technical solution, the moisture-proof cotton board can be positioned with the help of the action force of the spring to ensure that it will not come out of place.

[0015] As a preferred technical solution of the utility model, the inner cavity of the shell is fixedly equipped with a MEMS system, and the MEMS system is a micro device integrating micro sensors, micro actuators, micro mechanical structures, micro power sources, micro energy, signal processing and control circuits, high-performance electronic integrated devices, interfaces, and communications.

[0016] By adopting the above technical solution, the intelligence of the device can be improved.

[0017] Beneficial effects of the utility model:

[0018] 1. The inner cavity of the shell is moisture-proofed by a moisture-proof cotton board. When the moisture-proof cotton board needs to be replaced, the pressure plate can be pulled upward to place the new moisture-proof cotton board in the middle of the pressure plate and the positioning strip, and then the moisture-proof cotton board is reset with the help of the force of the spring to stably position the moisture-proof cotton board in the middle of the positioning strip and the pressure plate, thereby improving the convenience of replacement and avoiding the problem that the internal electronic components and line connection ports are prone to short circuit when in a humid environment due to insufficient moisture resistance, thereby causing insufficient safety.

[0019] 2. The dust and other foreign objects in the outside world are intercepted by the dustproof net to ensure that they will not be discharged into the inner cavity of the shell and contact the electronic components inside it, thereby increasing the service life of the electronic components in the inner cavity of the shell. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a side view structural schematic diagram of the utility model;

[0022] Figure 3 This is a schematic diagram of the cross-sectional structure of the positioning strip of the utility model;

[0023] Figure 4 It is a schematic diagram of the internal structure of the utility model.

[0024] In the figure: 1. shell; 2. sound cover; 3. cover plate; 4. screw; 5. heat dissipation slot; 6. positioning strip; 7. spring; 8. round rod; 9. pressure plate; 10. moisture-proof cotton board; 11. positioning frame; 12. card strip; 13. dustproof net. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0026] See also Figure 1 - Figure 4 A MEMS speaker with high moisture resistance comprises a shell 1, two sound covers 2 are fixedly mounted on the top of the shell 1, a cover plate 3 is fixedly mounted on the side of the shell 1 away from the sound cover 2 by screws 4, a plurality of heat dissipation grooves 5 are evenly opened on the inner wall of the cover plate 3, a positioning bar 6 is fixedly mounted on the inner wall of the shell 1, one end of a spring 7 is fixedly connected to the inner wall of the positioning bar 6, a round rod 8 is fixedly connected to the other end of the spring 7, a pressing plate 9 is fixedly mounted on the top of the round rod 8, and a moisture-proof cotton board 10 is provided on the top of the positioning bar 6.

[0027] See also Figure 4 A positioning frame 11 is fixedly mounted on the inner side of the cover plate 3, and a clamping strip 12 is fixedly mounted on the four corners of the inner side of the shell 1. A dustproof net 13 is attached to the inner side of the cover plate 3. The dustproof net 13 is arranged in the middle position between the clamping strip 12 and the cover plate 3. The dustproof net 13 covers several heat dissipation slots 5. The clamping strip 12 is made of elastic rubber, so that the dustproof net 13 can be used to intercept foreign matter such as dust from the outside, thereby ensuring that it will not be discharged into the inner cavity of the shell 1 and contact the electronic components inside it, thereby improving the service life of the electronic components in the inner cavity of the shell 1.

[0028] See also Figure 2There are four screws 4, and the four screws 4 are symmetrically arranged on the outer side of the cover plate 3, so that the cover plate 3 can be positioned from four different angles, thereby ensuring that the sound cover 2 and the shell 1 are firmly connected and will not fall off at will.

[0029] See also Figure 3 The pressing plate 9 is arranged above the positioning strip 6, and the moisture-proof cotton board 10 is arranged in the middle position between the positioning strip 6 and the pressing plate 9. The bottom of the moisture-proof cotton board 10 is in contact with the top of the positioning strip 6, and the top of the moisture-proof cotton board 10 is in contact with the bottom of the pressing plate 9, so that the moisture-proof cotton board 10 can be stably positioned in the inner cavity of the shell 1 by utilizing the cooperation of the positioning strip 6 and the pressing plate 9, thereby ensuring that it performs moisture-proof operation on the inner cavity of the shell 1 and ensuring that the inner cavity of the shell 1 is in a dry state for a long time.

[0030] See also Figure 3 A circular hole is opened on the inner wall of the positioning strip 6, and the bottom end of the spring 7 is fixedly connected to the bottom position of the circular hole. The outer diameter of the round rod 8 is adapted to the inner wall diameter of the circular hole, and the position of the round rod 8 corresponds to the circular hole, so that the moisture-proof cotton board 10 can be positioned with the help of the force of the spring 7 to ensure that it will not be out of position.

[0031] See also Figure 2 The inner cavity of the shell 1 is fixedly equipped with a MEMS system, and the MEMS system is a micro device that integrates micro sensors, micro actuators, micro mechanical structures, micro power sources, micro energy, signal processing and control circuits, high-performance electronic integrated devices, interfaces, and communications, so that the intelligence of the device can be improved.

[0032] Working principle: When using the device, the inner cavity of the shell 1 can be moisture-proofed by the moisture-proof cotton board 10. When the moisture-proof cotton board 10 needs to be replaced, the pressure plate 9 can be pulled upward to place the new moisture-proof cotton board 10 in the middle position between the pressure plate 9 and the positioning strip 6, and then the moisture-proof cotton board 10 is reset with the help of the force of the spring 7 to stably position the moisture-proof cotton board 10 in the middle position between the positioning strip 6 and the pressure plate 9, thereby improving the convenience of replacement. At the same time, the dust-proof net 13 can be used to intercept foreign matter such as dust from the outside, thereby ensuring that it will not be discharged into the inner cavity of the shell 1 and contact the electronic components inside it, thereby improving the service life of the electronic components in the inner cavity of the shell 1.

[0033] The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A MEMS speaker with high moisture resistance, comprising a housing (1), characterized in that: Two sounding covers (2) are fixedly mounted on the top of the shell (1); a cover plate (3) is fixedly mounted on the side of the shell (1) away from the sounding covers (2) by means of screws (4); a plurality of heat dissipation grooves (5) are evenly arranged on the inner wall of the cover plate (3); a positioning strip (6) is fixedly mounted on the inner wall of the shell (1); one end of a spring (7) is fixedly connected to the inner wall of the positioning strip (6); a round rod (8) is fixedly connected to the other end of the spring (7); a pressure plate (9) is fixedly mounted on the top of the round rod (8); and a moisture-proof cotton board (10) is arranged on the top of the positioning strip (6).

2. The MEMS speaker with high moisture resistance according to claim 1, characterized in that: A positioning frame (11) is fixedly mounted on the inner side of the cover plate (3); clamping strips (12) are fixedly mounted on the four corners of the inner side of the shell (1); a dustproof net (13) is attached to the inner side of the cover plate (3); the dustproof net (13) is arranged in the middle position between the clamping strip (12) and the cover plate (3); the dustproof net (13) covers a plurality of heat dissipation slots (5); and the clamping strip (12) is made of elastic rubber.

3. The MEMS speaker with high moisture resistance according to claim 1, characterized in that: The number of the screws (4) is four, and the four screws (4) are symmetrically arranged at the outer side of the cover plate (3).

4. The MEMS speaker with high moisture resistance according to claim 1, characterized in that: The pressing plate (9) is arranged above the positioning strip (6), and the moisture-proof cotton board (10) is arranged in the middle of the positioning strip (6) and the pressing plate (9). The bottom of the moisture-proof cotton board (10) is in contact with the top of the positioning strip (6), and the top of the moisture-proof cotton board (10) is in contact with the bottom of the pressing plate (9).

5. The MEMS speaker with high moisture resistance according to claim 1, characterized in that: The inner wall of the positioning strip (6) is provided with a circular hole, the bottom end of the spring (7) is fixedly connected to the bottom position of the circular hole, the outer diameter of the round rod (8) is matched with the inner wall diameter of the circular hole, and the positions of the round rod (8) and the circular hole correspond.

6. The MEMS speaker with high moisture resistance according to claim 1, characterized in that: The inner cavity of the housing (1) is fixedly equipped with a MEMS system, and the MEMS system is a micro device integrating micro sensors, micro actuators, micro mechanical structures, micro power sources, micro energy sources, signal processing and control circuits, high-performance electronic integrated devices, interfaces, and communications.

Images